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  • 专利说明
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    • 专利摘要:
    RETENTION ASSEMBLY AND RETENTION MEMBERS FOR A CLAW CONNECTION A retaining set with retaining members, as part of a claw connection, used to grasp and manipulate elongated objects, for example, ducts, is described. Thanks to the retention action of the retaining members and the tilt control capabilities of the claw connection, total positive control of the duct is maintained, even if the retaining assembly grips the duct in a decentralized position. the grapple connection can be used on all types of duct surfaces, including dirty or snow or ice covered duct surfaces. The retaining members are configured to prevent damage to the duct and adjacent ducts and will not crush the duct.
    公开号:BR112012031270B1
    申请号:R112012031270-7
    申请日:2011-05-19
    公开日:2020-08-25
    发明作者:Jason LaValley；Roger Lavalley；Marvin Larson；Lawrence D. Kilpo；Michael Burgess
    申请人:Lavalley Industries, Llc.；
    IPC主号:
    专利说明:

    [0001] The present disclosure relates to a retaining assembly with retaining members, as part of a claw connection, for gripping and handling elongated objects, for example, elongated cylindrical objects such as ducts, tubes, trees, etc. or non-cylindrical objects, such as I-shaped beams, rectangular or square pipes, etc. The grapple connection can be connected, for example, to a crawler excavator, backhoe, excavator or other piece of heavy construction equipment. Background of the Invention
    [0002] In the construction of pipelines or in directional drilling, it is necessary to load and unload large and difficult-to-handle pipelines for platform trucks. The weight of a duct will vary depending on its diameter, wall thickness and length, with some ducts weighing hundreds of pounds per linear foot.
    [0003] At the construction site, each pipeline is individually lifted or loaded onto the bed of a truck, wagon or pipe storage rack. Normally, nylon strips and cables, with or without hand clamps, are attached around the duct instead of to an excavator bucket. The tweezers or nylon strips are placed, as close as possible, in the longitudinal center of the duct. This is important, since decentralization, even for a few centimeters, results in loss of control and unwanted duct inclination. In addition, it is necessary to allocate at least one worker at each end of the duct to stabilize and guide the duct as it is moved to the site. The workers then manually tilt and rotate the duct to the correct position. This operation is complicated and dangerous, requiring at least three or more workers (bulldozer operators and two pipeline workers).
    [0004] Duct hooks are also used to manipulate the duct. Duct hooks are located at each end of the duct and are connected to cables. A worker is assigned at each end of the duct to place the hooks and control the movement of the duct. When unloading the truck duct in this way, there are risks for the operator, as he can easily fall off the truck or be hit or crushed by the pipe.
    [0005] Current pipeline loaders also require that the pipelines be loaded / unloaded in a specified order and that spacing between the pipelines is provided so that the clamps can access the regions near and under the pipelines. Even so, it is not uncommon for ducts to be thrown to the sheet of the duct pile, creating extremely dangerous situations or damaging the duct.
    [0006] Duct vacuum lifting mechanisms are also used to lift large diameter ducts. Although a vacuum lifting mechanism eliminates the need for workers at each end of the pipe, the vacuum lifting mechanism generally needs to be centered in the duct to prevent the duct from tipping over. If the vacuum lifting mechanism is not properly centered in the duct, decentralized lifting takes place, creating a tilting movement. This tilting movement can break the vacuum seal between the vacuum lifting mechanism and the duct or result in dangerous duct tipping and loss of duct control. In addition, the loss of suction or vacuum strength can cause the duct to detach from the vacuum lifting mechanism, resulting in hazardous conditions. In addition, in order to obtain an effective seal for the vacuum lift, the duct surface must be cleaned without the presence of any subject, snow or ice. summary
    [0007] A retaining assembly with retaining members is described as part of a claw connection, used to grasp and manipulate elongated objects, for example, ducts of various diameters and lengths. The retention connection is configured to improve loading into a pipeline stack and unloading it, for example, into a truck bed, wagon or storage shelf with minimal disturbance or damage to adjacent pipelines or the pipeline lining and, at the same time, allowing control over the position of the duct, in addition to allowing controlled duct layout while reducing the human workforce and eliminating the need for accurate centralization of the duct retention set. Thanks to the retention action of the retaining members and the tilt, rotation and deviation control capabilities of the claw connection, total positive control of the duct is maintained, even if the retaining assembly grips the duct in a decentralized position, the connection claw can be used on all types of duct surfaces, including duct surfaces that are dirty or covered with snow or ice. The retaining members are configured to prevent damage, not only to the pipeline being handled, but also to the adjacent pipelines. The retaining members are configured so that the retaining pressure does not crush the duct.
    [0008] The retaining members are used at least in pairs and are mounted on a main common beam structure so that they are separated from each other. The retaining members are interchangeable with other retaining members to allow the claw connection to hold objects of varying dimensions, thereby offering modularity to the claw connection. In one embodiment, the configuration of the retaining arms of the retaining member allows the duct to be fixed or gripped by the retaining arms and not rolled into the retaining arms, as usual.
    [0009] In one embodiment, the retaining members are configured to be adjustable together to change their position in the main beam structure while still maintaining the distance between the retaining members. In another embodiment, one or more of the retaining members are adjustable in the main beam structure in order to change the distance between the retaining members. In another embodiment, the retaining members are fixedly connected to the main beam structure. Alternatively, the main beam structure can be configured to be adjustable in length, thereby changing the distance between the retaining members or changing the positions of the retaining members, while still maintaining the distance between them. In addition, the main beam structure can be configured so that it moves along the longitudinal geometric axis in relation to the rotating assembly.
    [0010] In one embodiment, a retaining member is provided that can be used with a claw connection retaining assembly that includes a support member. The support member includes an opening of the main beam structure extending laterally through it which is configured to receive a main beam structure of the retaining assembly. A first retaining arm and a second retaining arm are connected to the support member. Each of the first holding arm and the second holding arm tapers towards a free end, and at least one of the first and second holding arms is pivotally connected to the support member so that the first and second holding arms have a holding position and a non-holding position. A first actuator has one end connected to the support member and a second end connected to the retaining arm pivotally connected. The support member and the first and second retaining arms define an object receiving area when the first and second retaining arms are in the holding position, where the object receiving area is arranged below the beam structure opening. main.
    [0011] In another embodiment, a claw connection includes an angled support connection configured to connect to a piece of construction equipment, a lower head assembly connected to the angled support connection and configured to be able to rotate about an axis of rotation , and a retaining assembly pivotally connected to the lower head assembly for pivoting movement about a pivot axis that is substantially perpendicular to the axis of rotation. The retaining assembly includes a main beam structure that extends along a longitudinal geometric axis that is substantially perpendicular to the axis of rotation and the pivot axis. A plurality of retaining members are connected to the main beam structure, and each of the plurality of retaining members can be moved between a non-holding position and a holding position. At least one of the retaining members is adjustable in position relative to the axis of rotation and the pivot axis in a direction parallel to the longitudinal axis.
    [0012] Each retaining assembly uses actuators, for example, hydraulic actuators, to actuate the retaining movement by moving one or more retaining arms, to tilt the main beam structure, and to adjust the location of the retaining members. Load check valves are provided, ensuring that the check arms remain locked in position if a hydraulic hose should fail.
    [0013] In one embodiment, the holding member comprises a fixed holding arm and a movable holding arm, wherein the holding arms are in the same plane or vertical axis. In another embodiment, the retaining member comprises two movable retaining arms on which the retaining arms are tilted, creating six points of contact, which is useful for holding a duct, and the retaining arms are not on the same vertical axis, that is, displaced. In another embodiment, the retaining member comprises two movable retaining arms, wherein the retaining arms are increasingly shaped and displaced.
    [0014] The retaining members are preferably made primarily of metal, and include a support member formed of separate or forged plates or molded from solid metal.
    [0015] The retaining members described here provide a more precise fit around the duct. Total positive control of the duct and the elimination of the direction of free movement is possible thanks to the absence of unwanted oscillations and inclinations. graphics
    [0016] Fig. 1A illustrates a claw connection with a retaining assembly. Fig. 1B is an exploded view of a claw connection similar to Fig. 1A, but with a set of retaining members illustrated in Figure 6. Fig. 2 is a front view of another embodiment of a retaining member containing a fixed retaining arm and a movable retaining arm. Fig. 3 is a side view of the retaining member of Fig. 2. Fig. 4 is a diagrammatic front view of the retaining member of Fig. 2 while holding a duct. Fig. 5 is an illustration of the retaining assembly with the retaining members of Fig. 2 in use and removing a single duct from a stack of ducts. Fig. 6 is a front view of one of the retaining members shown in Figure 1B with two movable retaining arms in increasing shape. Fig. 7 is a side view of the retaining member of Fig. 6. Fig. 8 is a front view of one of the retaining members of Figure 1A with two modified "L" shaped retaining arms. Fig. 9 is a side view of the retaining member of Fig. 8. Fig. 10 is a cross-sectional view of the claw connection. Detailed Description
    [0017] A retaining assembly with retaining members is described as part of a claw connection, used to grasp and manipulate elongated objects, for example, ducts. Throughout this report, for the sake of simplicity of discussion and clarity, reference and description to objects will be made as pipelines. The described claw connection can be used in the pipeline construction industry to hold and handle pipelines of varying diameters, including large diameter pipelines, for example, 20-inch pipelines, but can also be used in other sectors, such as the exploration industry wooden, to hold other objects. It should be understood that the concepts as described here can equally apply to the retention and handling of any elongated objects, whether cylindrical or non-cylindrical, for example, ducts, cylindrical tubes, trees, “I” beams, square tubes, tubes triangular, etc.
    [0018] The claw connection allows you to remove the duct from a duct stack and place the duct on top of a duct stack without disturbing or damaging adjacent ducts, while offering control over duct placement. The grapple connection can also be used to arrange the duct, for example, in a trench, and remove the duct. the grapple connection can be used on all types of duct surfaces, including duct surfaces that are dirty or covered with snow or ice. The retaining members are configured to prevent damage, not only to the pipeline being handled, but also to the adjacent pipelines and to the linings of the adjacent pipelines. The retaining members are configured so that the retaining pressure does not crush the duct.
    [0019] The claw connection uses actuators, for example, to actuate the holding movement by moving the holding arms, to tilt the main beam structure and to change the positions of the holding members. The actuators described here can be hydraulic actuators, pneumatic actuators, mechanical actuators, such as screw type actuators or gear actuators, or other actuators suitable for this purpose.
    [0020] As described here, an open or non-holding position is one in which the first and second holding arms are moved away from each other so that a duct can fit into the space between the holding arms. A closed or holding position is one in which the holding arms are moved towards each other so that a duct located between the holding arms is compressed between the holding arms to allow the duct to be caught. The configuration of the retaining arms results in the duct being fixed or caught by the retaining arms and not rolled into the retaining arms, as is customary.
    [0021] Figs. 1A and 1B illustrate examples of a claw connection 1 provided with a retaining assembly 11 with different embodiments of the retaining members 9, 13. Another embodiment of a retaining member 12 is illustrated in Fig. 2. The retaining members 9, 12, 13 are designed to be interchangeably mountable on the retaining assembly 11 to allow changing the type of retaining member 9, 12, 13 used in the claw connection 1.
    [0022] The claw connection 1 comprises an angled support connection 3, a rotary drive unit 106, a lower head assembly 5, tilt actuators 118, 120 and the retaining assembly 11. The angled support connection 3 is configured to connect to a piece of construction equipment, for example, an excavator, crawler excavator, backhoe, etc. In the illustrated embodiment, the angled support connection 3 is connected to the construction equipment by means of a pair of spaced connecting pins 100, 102.
    [0023] The rotary drive unit 106 rotates the lower head assembly 5 about a axis of rotation aa (shown in Fig. 10) that extends along the x axis or vertical axis through a central point of the lower head assembly 5 Referring to Fig. 10, the speed control includes a hydraulic rotary motor 106 which causes the lower head assembly 5 to rotate around the axis aa driven by motor 106. A hydraulic rotary pin 108 transfers the hydraulic pressure between the limit fixed / rotating between the angled support connection 3 and the lower head assembly 5 for use by the various hydraulic components of the claw connection 1. An oscillating bearing 110 between the angled support connection 3 and the lower head assembly 5 allows rotation with respect to the angled support connection 3. A hydraulic distributor 112 is located in housing 104 to direct the hydraulic fluid to various hydraulic actuators. A main hydraulic control valve 114 is mounted on the angled support connection 3.
    [0024] Continuing with reference to Figs. 1A, 1B and 10, the retaining assembly 11 is pivotally connected to the lower head assembly 5 by a pivot pin 116 so that the retaining assembly 11 can pivot about a pivot axis bb arranged on an axis z or lateral axis that is substantially perpendicular to the axis of rotation aa.
    [0025] The retaining assembly 11 comprises a longitudinal support structure or main beam structure 14 that supports various embodiments of the retaining members 9, 12, 13. The main beam structure 14 extends along a longitudinal axis (y axis) that it is substantially perpendicular to the axis of rotation aa and the pivot axis -b. The main beam structure 14 can have any suitable configuration to support the retaining members 9, 12, 13 and perform the other functions of the main beam structure 14 resulting from this description. In the illustrated embodiment, the main beam structure 14 is a generally rectangular tubular beam that has a generally square cross section. The main beam structure 14 can alternatively be, for example, cylindrical or triangular, or be formed as an "I" or "H" beam, and can also be a solid structure.
    [0026] Tilt actuators 118, 120 are provided to positively control the pivoting movement of the main beam structure 14 around the pivot axis b-b, thereby controlling the inclination angle of the retaining assembly 11 and a duct retained by it. The tilt actuators 118, 120 are of identical construction, although they may be different if desired. In the illustrated embodiment, the tilt actuators 118, 120 are hydraulic actuators, although other types of actuators can be used, for example, pneumatic actuators or mechanical actuators. Tilt actuators 118, 120 have a first end connected to housing 104 of the lower head assembly 5 and a second end connected to the main beam structure 14.
    [0027] As the arrows in Fig. 1B show, at least one of the retaining members 13 (as well as the retaining members 9, 12) or both retaining members 13 are designed to be adjustable in position relative to the axis of rotation aa and the pivot axis bb in a direction parallel to the longitudinal axis y ·
    [0028] For example, the retaining members 9, 12, 13 can be slidably arranged on the main beam structure 14. For each of the retaining members 9, 12, 13, the means for slidably arranging the retaining members 9 , 12, 13 on the main beam structure 14 and to adjust the positions of the retaining members 9, 12, 13 on the main beam structure 14 are the same and will be described in the following paragraph in relation to the retaining members 13.
    [0029] The retaining members 13 are adjustable longitudinally in the main beam structure 14 by sliding from side to side in the main beam structure 14 in the directions illustrated by arrows a1, a2. The retaining members 13 are arranged at opposite ends of the main beam structure 14. For each retaining member 13, a displacement actuator 8 is mounted within the main beam structure 14 along its longitudinal direction. The retaining members 13 are connected to one end of the displacement actuator 8, for example, by means of a fixing pin 7. The other end of the longitudinal actuator 8 is fixed to the main beam structure 14 by means of a fixing means. 6, for example, a screw. Displacement actuators 8 are illustrated as hydraulic actuators, although other types of actuators can be used, such as pneumatic or mechanical actuators.
    [0030] The actuation of the displacement actuator 8 moves the connected retaining member 13 by means of the fixing pin 7 along the main beam structure 14 on the longitudinal axis. The actuation of the displacement actuator 8 results in the shortening or elongation of the displacement actuator 8. As the clamping pin 7 is connected to one end of the displacement actuator 8, the clamping pin 7 thus moves in relation to the actuator displacement 8. In addition, as the retaining member 13 is connected to the retaining pin 7, the retaining member 13 thus moves in relation to the retaining pin 7 and the displacement actuator 8. The retaining pin 7 is retained within and moves in a longitudinal slot 15 in the main beam structure 14, thereby controlling the path of the fixing pin 7. Stops 4 are provided in the main beam structure 14 to limit the range of movement of the retaining members 13 and prevent the retaining members 13 from moving excessively.
    [0031] In one embodiment, the retaining members 13 and displacement actuators 8 can be configured to move the retaining members 13 in several ways. For example, the retaining members 13 can move simultaneously in the same direction, so that the distance between the retaining members 13 remains the same. Alternatively, the retaining members 13 can be designed to move independently of each other, or more simultaneously with each other, to allow adjustment in the distance between the retaining members 13.
    [0032] Instead of moving the retaining members 13, it is contemplated here that the main beam structure 14 can be configured to be changeable in its length while the retaining members 13 remain relatively fixed in the main beam structure 14, in order to displace the positions of the retaining members 13, either with the same distance between them or changing the distance between the retaining members 13. Alternatively, the main beam structure 14 could be configured so that it is adjustable along the longitudinal axis in relation to to the lower head assembly 5.
    [0033] As indicated above, the retaining members 13 are assembled so as to be replaceable by differently configured retaining members 9, 12, 13 designed to perform the broad function of catching an object, but in different ways for objects of different sizes. Each retaining member 9, 12, 13 includes a support member 130 that includes a main beam frame opening 132 (as shown in Fig. 4) extending laterally through it which is configured to allow the frame to pass main beam 14 when the retaining member 9, 12, 13 is mounted on the main beam structure 14. Support member 130 can assume a number of different configurations, provided that support member 130 can support one or more support arms support, as discussed in detail below, and the support member 130 can be suitably mounted on the main beam structure 14. In the embodiments illustrated and described here, the support members 14 are made of separate metal plates. However, the support members 14 could be forged or molded from solid metal. As illustrated and described here, the retaining members 9, 12, 13 are mounted on the main beam structure 14 so that they are movable and can be adjusted longitudinally. However, the retaining members 9, 12, 13 can be fixedly connected to the main beam structure 14 so that they have no longitudinal movement.
    [0034] In one embodiment, as shown in Figs. 2 and 3, the holding member 12 includes a first holding arm 16 and a second holding arm 18 pivotally connected to the first holding arm 16. Alternatively, the first holding arm 16 can be pivotally connected to the second holding arm 18. When holding the holding member 12 from the side, as in Fig. 3, the holding arms 16, 18 are positioned so that each holding arm 16, 18 has the same vertical axis v1, this that is, the retaining arms 16, 18 are not displaced. In another embodiment, the retaining arms 17, 18 could be on different vertical axes, thereby being displaced from each other.
    [0035] The retaining member 12 includes a first plate 20 and a second plate 22 separated from each other and parallel to each other. The first plate 20 and the second plate 22 are connected to each other. The plates 20, 22 can be connected using suitable fastening means 23a, 23b, as shown in Figs. 2 and 3, sufficient to keep the plates 20, 22 spaced apart and form a strong support member 130. For example, the fixing means can be rods, screws, pins and / or spacer plates or any other method of fixation. An opening of the main beam structure 21 is provided on each of the plates 20, 22 to receive the main beam structure 14 of the retaining assembly 11. The openings of the main beam structure 21 are aligned with each other to form the opening 132. In the embodiment shown, the openings of the main beam structure 21 are illustrated as having a square shape, but it should be understood that the openings of the main beam structure 21 can have any shape, as long as the main beam structure 14 can be received and the fastening members 12 cannot rotate in the main beam structure 14. The illustrated main beam structure openings 21 are closed, as they are limited on all sides by the plates 20, 22, but it is understood that the openings of the main beam structure 21 can be opened or with slits on one side or on more sides.
    [0036] The first retaining arm 16 is integrally formed with the retaining member 12 and is not pivotable. The second holding arm 18 is pivotally connected between the first plate 20 and the second plate 22. In the illustrated embodiment, a rod as a fixing means 24 is arranged in a pivot of the tube arm 25 of the second holding arm 18 and the fastening means 24 is connected to the first plate 20 and the second plate 22. Other methods for connecting the second retaining arm 18 to the plates 20, 22 can be used, as long as the second retaining arm 18 pivots.
    [0037] As illustrated in Figs. 2 and 3, the second retaining arm 18 has a pivot main beam structure 28 and is pivotally connected to one end of an actuator 30. The other end of the actuator 30 is pivotally connected between the first plate 20 and the second plate 22 of the holding member 12. The actuator actuation 30 moves the second holding arm 18 between an open or non-holding position and a closed or holding position.
    [0038] The retaining member 12 can be mounted on the main beam structure 14 by inserting the main beam structure 14 through the aligned openings 21. Once mounted on the main beam structure 14, the retaining member 12 cannot rotate with respect to the main beam structure 14. The fixing pin 7 is then connected to the retaining member 12, and the fixing means 6 connected to the actuator 8 and to the main beam structure 14, as shown in Figures 1A, 1B and 10. This prevents that the retaining member 12 slides out of the main beam structure 14.
    [0039] As illustrated in Fig. 4, the support member 130 and the first and second holding arms 16, 18 define an object receiving area when the first and second holding arms 16, 18 are in the holding position in which an object is received, just like a duct. The object receiving area is arranged below the main beam structure opening 132. In addition, the object receiving area includes a center C, and the object receiving area and the main beam structure opening 132 are positioned with respect to each other so that, in a front view of the retaining member, as in Fig. 4, a vertical line LL extending through the center of the object receiving area also extends through the center of the structure opening main beam 132. Retention members 9, 13 define similar object retention areas and the relationship between the retention areas and the openings of the main beam structure is the same.
    [0040] A horizontal plane H is located at the end 17 of the first retaining arm 16 and is perpendicular to the vertical line LL that halves the opening of the main beam structure 132. The first retaining arm 16 has a concave contact surface 26 which has a radius r1, which is preferably approximately equal to the radius of the duct. The radius rl can be, for example, approximately 10 inches for use with a duct having an outside diameter of twenty inches. Alternatively, the concave contact surface 26 may have a radius r1 that is slightly greater than half the diameter of the duct. When in the holding position, the tip 17 of the first holding arm 16 is configured to be in the same horizontal plane H as the center point C of the circle created by the duct at an approximate distance r1 from the center point C.
    [0041] The second retaining arm 18 is preferably configured so that it has a concave contact surface 27 which has a radius r2, which is preferably approximately equal to the radius of the duct. Alternatively, the concave contact surface 27 may have a radius r2 that is slightly greater than half the diameter of the duct. Tip 19 of the second retaining arm 18 is configured to be arranged at an angle θ of approximately 40 ° from the horizontal plane H and at an approximate distance r2 from the central point C. It must be understood that the angle θ may be greater or less than 40 °. The first retaining arm 16 and the second retaining arm 18 are configured so that the concave contact surfaces 26, 27 come into contact with the duct when holding the duct.
    [0042] As shown in Fig. 2, each retaining arm 16, 18 has a profile that tapers towards a free end. The holding member 12 is configured so that only the second holding arm 18 is movable when the holding movement is actuated. In another embodiment, the holding member 12 is configured so that the first holding arm 16 is movable with respect to the second holding arm 18 when the holding movement is activated. Actuator 30 is used to drive and move the second holding arm 18 between a holding position and a non-holding position. Load check valves are incorporated in the actuators 30, so that the second check arm 18 remains locked in place in the event of a hydraulic or pressure hose failure.
    [0043] Retention arms 16, 18 can include resilient blocks 31, 32, 33, 34, 35, 36, as shown in Fig. 2. Blocks 32, 34 are preferably vulcanized rubber with steel reinforcement, but can be any material, including rubber or plastic, that offers positive adhesion while protecting the duct. Blocks 32, 34 can be quite resilient to help the duct withstand lateral and rotational movement once fixed. Blocks 33, 35 are protective blocks that are preferably UMHW or Nylatron® plastic, but can be any type of plastic, rubber or other material. Blocks 33, 35 allow retaining arms 16, 18 to come into contact with adjacent tubes while protecting the contact ducts from damage and allow retaining arms 16, 17 to slide easily along the contacting duct. Blocks 31, 36 are end blocks that can be made of the same material as blocks 32, 34 or protection blocks 33, 35. Blocks 31, 32, 33, 34, 35, 36 are configured to allow removal and the exchange of blocks 31, 32, 33, 34, 35, 36. The blocks 31, 32, 33, 34, 35, 36 are preferably installed in the retaining arms 16, 18, so that any part of the retaining member 12 that comes in contact with the duct, or with the adjacent ducts, is covered by blocks 31, 32, 33, 34, 35, 36. Blocks 31, 32, 33, 34, 35, 36 can be supplied as a part continuous or can be provided in sections. When open, the ends 17, 19 of the retaining arm 16, 18 extend with an opening slightly larger than the diameter of the duct so that the retaining member 12 can be placed over the duct. In addition, the holding member 12 is configured to limit the amount and that the second holding arm 18 can move towards the first holding arm 16 when a holding position is actuated, thus preventing damage to the duct by crushing. This limitation can be incorporated physically or through electronic controls or software.
    [0044] It is preferred that the retaining arms 17, 18 do not open to such an extent that they allow the retaining member 12 to go over the top of more than one duct to prevent more than one duct from being caught. As shown in Fig. 5, as the retaining member 12 is lowered towards a stack of ducts, the profile of the retaining arms 16, 18 guides the retaining arms 16, 18 downward through the curved outer surfaces between the two ducts and the narrow free end of the first retaining arm 16 allows the first retaining arm 16 to more easily fit between adjacent ducts. Once the second retaining arm 18 has passed the center line of the duct, the second retaining arm 18 is driven into a holding position, so that the duct is held securely within the retaining member 12 and the duct can be safely lifted. The end 17 of the first retaining arm 16 contacts the duct approximately at the center line of the duct. The retaining member 12 is thus capable of picking up and loading or unloading the ducts, without interfering with the adjacent ducts.
    [0045] In the embodiment illustrated in Figs. 1B, 6 and 7, the holding member 13 is provided with two holding arms 40 which are movable. The retaining member 13 includes a first plate 42 and a second plate 43 separated from each other and parallel to each other. The retaining arms 40 are pivotally connected to the first and second plates 42, 43. Separate actuators 44 are connected to each retaining arm 40. One end of each actuator 44 is connected to the respective retaining arm 40 and the other end of the actuator 44 is connected to plates 42, 43.
    [0046] The retaining member 13 is configured to be slidably connected to the main beam structure 14 in a similar manner to the retaining member 12. As shown in Fig. 6, the retaining member 13 is provided with openings of the main beam structure 46 on the plates 42, 43, where the openings 46 are aligned with each other. When viewing the holding member 13 from the side, as in Fig. 7, the holding arms 40 are positioned so that the holding arms 40 have different vertical axes v2, v3, that is, the holding arms 40 are offset. When deflected, the retaining arms 40 can be configured so that the retaining arms 40 contour when in the holding position. In another embodiment, the retaining arms 40 have the same vertical axis and are not deflected.
    [0047] In the shown embodiment, the openings of the main beam structure 46 are illustrated as having a square shape, but it should be understood that the openings of the main beam structure 46 can have any shape, as long as the main beam structure 14 can be received and the fastening member 13 can be mounted on the main beam structure 14. The illustrated main beam structure openings 46 are closed, as they are surrounded on all sides by the plates 42, 43, but it is understood that the openings of the structure main beam 46 can be opened or slotted on one side or on more sides.
    [0048] Retaining member 13 includes a third plate 49 that is arranged between and connected to the first plate 42 and the second plate 43. The third plate 49 includes a main beam structure opening that aligns with the main beam structure openings 46 of the first plate 42 and the second plate 43. One of the retaining arms 40 is connected between the first plate 42 and the third plate 49 and the other holding arm 40 is connected between the second plate 43 and the third plate 49 so that the holding arms 40 are on different vertical axes v2, v3. It should be understood that the inclusion of a third plate 49 is not necessary, as long as a means is provided that allows separation of the retaining arms 40. For example, spacers or washers can be inserted between the retaining arms 40.
    [0049] The plates 42, 43, 49 have a concave contact surface 48 that has a radius approximately equal to half the diameter of the duct to be moved. In another embodiment, the concave contact surfaces 48 may have a radius that is slightly larger than the diameter of the duct to be moved. In another embodiment, the contact surfaces 48 are not related to the diameter of the duct and can have any radius or can be a straight edge.
    [0050] The retaining arms 40 are configured so that they open and close simultaneously. When opened, the retaining arms 40 preferably extend slightly more than the diameter of a duct. Preferably, the retaining arms 40 do not open to a width that would exceed the top of more than one duct to prevent more than one duct from being caught. As the retaining member 13 is lowered, the profile of the retaining arms guides the retaining arms 40 down and around the curved outer surfaces of the duct and the narrow free ends of the retaining arms 40 allow the retaining arms 40 fit more easily between adjacent ducts. Once the retaining arms 40 have passed the center line of the duct, the retaining arms 40 are actuated so that the duct is moved up to and against the concave contact surface 48 so that the duct is securely retained within retaining member 13 and can be safely moved.
    [0051] The retaining arms 40 are configured so that the front side 41 contacts the duct when closed around the duct. Each retaining arm 40 has a profile that tapers towards a free end. The holding member 13 is configured so that both holding arms 40 move simultaneously when the holding movement is triggered. Actuators 44 are used to drive and move the retaining arms 40. Each retaining arm 40 has its own actuator 44. Load check valves are incorporated into the actuators so that the retaining arms 40 remain locked in place in the event of a hydraulic or pressure hose failure.
    [0052] The free end of the holding arm also has a rear side 45. In one embodiment, as shown in Fig. 6, the front side 41 of each holding arm 40 is a curved holding surface whose radius is approximately half the diameter of the duct. The free end of the retaining arm 40 is elongated, allowing the duct to be picked up from the center of a duct storage shelf.
    [0053] The concave contact surface 48, the front side 41 and the rear side 45 of the retaining arms 40 can include blocks 50, 51, 52. The blocks 50 of the concave contact surface 48 are installed to create a general "V" shape that allows a firm grip. Blocks 50, 51, 52 can be provided as a continuous block that covers the entire surface of the retaining arms 40 or can be provided as individual non-continuous pieces that cover a large part of the retaining arms 40.
    [0054] Blocks 50, 51 are preferably vulcanized rubber with steel reinforcement, but they can be any material that allows positive adhesion while protecting the duct, including rubbers, plastics or other materials. Blocks 50, 51 can be quite resilient to help the duct withstand lateral and rotational movement once fixed. The protective blocks 52 are preferably a UMHW or Nylatron® plastic, but they can be any type of plastic, rubber or other material. The protective blocks 52 allow the retaining arms 40 to contact adjacent tubes while protecting the ducts from damage and allow the retaining arms 40 to slide easily along the adjacent duct.
    [0055] End blocks of the retaining arm 40 can be provided and made of the same material as blocks 50, 51 or protective blocks 52. Blocks 50, 51, 52 are configured to allow removal and replacement of blocks 50, 51, 52. Blocks 50, 51, 52 are preferably installed in the retaining arms 40, so that any part of the retaining member 13 that comes into contact with the duct, or with the adjacent ducts, is covered by the blocks 50, 51, 52. Blocks 50, 51, 52 can be supplied as a continuous piece or can be supplied in sections.
    [0056] As shown in Fig. 6, the support member 130 and the holding arms 40 define an object receiving area when the first and second holding arms 40 are in the holding position in which an object is received, such as a duct . The object receiving area is arranged below the main beam structure opening defined by the aligned openings 46. In addition, the object receiving area includes a center, and the object receiving area and the main beam structure opening are positioned relative to each other so that, in a front view of the retaining member in Figure 6, a vertical line LL extending through the center of the object receiving area also extends through the center of the opening of the main beam.
    [0057] Details of the retaining member 9 are illustrated in Figs. 8 and 9. The retaining member 9 includes two movable retaining arms 60. Each retaining arm 60 contains an elongated section 62 and a shorter section 63, which are integrally connected, at which angle α is created in which the sections 62, 63 meet. Due to the configuration of the retaining arms 60, this embodiment creates six points of contact in the duct. The elongation and angle α of the retaining arms 60 allow the duct to be picked up from a stack of ducts without unduly moving the adjacent ducts.
    [0058] In the illustrated embodiment, the retaining member 9 includes a first plate 64 and a second plate 65 separated from each other and parallel to each other. The retaining arms 60 are pivotally connected to the first and second plates 64, 65. Separate actuators 68 are connected to each retaining arm 60. One end of the actuator 68 is connected to the retaining arm 60 and the other end of the actuator 68 is connected to plates 64, 65.
    [0059] The retaining member 9 is configured to be slidably connected to the main beam structure 14 similar to the retaining members 12, 13. As shown in Fig. 8, the retaining member 9 is provided with aligned main beam structure openings 70 on the plates 64, 65. In the illustrated embodiment, the openings of the main beam structure 70 are illustrated as having a square shape, but it is understood that the openings of the main beam structure 70 can be of any shape.
    [0060] When viewing the holding member 9 from the side, as in Fig. 9, the holding arms 60 are positioned so that the holding arms 60 have different vertical axes v4, v5, that is, the holding arms 60 are offset. The holding arms 60 can be configured so that, when deflected, they contour in the holding position. In another embodiment, the retaining arms 60 have the same vertical axis and are not deflected.
    [0061] A third plate 66 is disposed between the first plate 64 and the second plate 65 and connected to them. The third plate 66 also includes a main beam frame opening that aligns with the main beam frame openings 70 of the first plate 64 and the second plate 65. One of the retaining arms 60 is connected between the first plate 64 and the third plate 66 and the other retaining arm 60 are connected between the second plate 65 and the third plate 66 so that the retaining arms 60 are on different vertical axes v4, v5. It should be understood that the inclusion of a third plate 66 is not necessary, as long as a means is provided that allows separation of the retaining arms 60. For example, spacers or washers can be inserted between the retaining arms 60.
    [0062] In one embodiment, the plates 64, 65, 66 have a concave contact surface 67 that has a radius approximately equal to half the diameter of the duct to be moved. In another embodiment, the concave contact surfaces 67 may have a radius that is slightly larger than the diameter of the duct to be moved. In another embodiment, the contact surface 67 is not related to the diameter of the duct and can have any radius or can be a straight edge.
    [0063] The retaining arms 60 are configured so that they open and close simultaneously. When opened, the retaining arms 60 preferably extend slightly more than the diameter of a duct and, preferably, do not extend with an opening sufficient to catch more than one duct. As the retaining member 9 is lowered, the profile of the retaining arms guides the retaining arms 60 downward and around the curved outer surfaces of the duct and the narrow free ends of the retaining arms 60 allow the retaining arms 60 fit more easily between adjacent ducts. Once the retaining arms 60 have passed the center line of the duct, the retaining arms 60 are actuated so that the duct is moved up to and against the concave contact surface 67 so that the duct is securely retained within retaining member 9 and can be safely moved.
    [0064] The retaining arms 60 are configured so that the contact surfaces 55 come into contact with the duct when closed around the duct. In the illustrated embodiment, there are six points of contact. Each retaining arm 60 has a profile that tapers towards a free end. Load check valves are incorporated into actuators 68 so that the check arms 60 remain locked in place in the event of a hydraulic or pressure hose failure.
    [0065] The free end of the retaining arm 60 has a front side 72 and a rear side 73. The free end of the retaining arm 60 is elongated, allowing the duct to be picked up from the center of a duct stack.
    [0066] The concave contact surface 67, the front side 72 and the rear side 73 of the retaining arms 60 can include blocks 74, 75. The blocks 74 on the concave contact surface 67 are installed in a general “V” shape which allows for a firm grip. Blocks 74, 75 can be provided as a continuous block or can be provided as individual non-continuous pieces.
    [0067] Blocks 74 are preferably vulcanized rubber with steel reinforcement, but they can be any material that allows positive adhesion while protecting the duct, including rubbers, plastics or other materials. Blocks 74 can be quite resilient to help the duct withstand lateral and rotational movement once fixed. The protection blocks 75 are preferably a UMHW or Nylatron® plastic, but they can be any type of plastic, rubber or other material. The protective blocks 75 allow the retaining arms 60 to contact adjacent tubes while protecting the ducts from damage and allow the retaining arms 60 to slide easily along the duct.
    [0068] Retaining arm end blocks 60 can be provided and made of the same material as blocks 74 or protective blocks 75. Blocks 74, 75 are configured to allow removal and replacement of blocks 74, 75. Blocks 74, 75 are preferably installed in the retaining arms 60, so that any part of the retaining member 9 that comes in contact with the duct, or with the adjacent ducts, is covered by blocks 74, 75. Blocks 74, 75 can be supplied as a continuous piece or can be supplied in sections.
    [0069] It is understood that the shape or configuration of the retaining arms is not limited to the embodiments as described above and can include any shape or configuration that makes it possible to contain and secure the duct.
    [0070] Due to the positive control provided by the tilt actuators 118 connected to the main beam structure 14 and the use of two retaining members 9, 12, 13, the duct can be caught by the claw connection and controlled and placed without the use of human force additional and without the need for precise centering of the retaining members 9, 12, 13 on the duct. It is preferred that two retaining members 9, 12, 13 are provided for use in the retaining assembly 11, but any number of retaining members 9, 12, 13 can be provided.
    [0071] The examples and embodiments disclosed in the present application are to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the previous description; in addition, all changes that fit the meaning and the equivalence range of the claims are intended to be covered by these.
    权利要求:
    Claims (11)
    [0001]
    Retaining member (12) that is repositionable on the main beam structure (14) of a retaining assembly (11) of a claw connection (1) for sliding movement relative to the main beam structure along the longitudinal direction with in order to adjust the position of the claw member in the main beam structure, FEATURED for understanding: a support member (130), the support member including an opening of the main beam structure (21, 132) extending laterally through it, which is configured to receive a main beam structure of the retaining assembly, the the only opening of the main beam structure is a closed opening, where in a frontal view of the support member the closed opening is delimited on all sides by the support member; a first retaining arm (16) and a second retaining arm (18) connected to the support member, each of the first retaining arm and the second retaining arm tapering towards a free end, at least one between the first and second holding arms being pivotally connected to the support member, the first and second holding arms having a holding position and a non-holding position; a first actuator (30) having one end connected to the support member (130) and a second end connected to the retaining arm pivotally connected; wherein the support member (130) and the first and second holding arms define an object receiving area when the first and second holding arms are in the holding position, the object receiving area being arranged below the opening of the main beam structure (132); the connecting member is connectable to a position actuator that can actuate the connecting member along the main beam structure along the longitudinal direction of the beam, and the single opening of the main beam structure (132) allows the connection slide along the main beam structure; and wherein the tip (19) of the second retaining arm is located below a horizontal plane extended from the tip (17) of the first connecting arm, and the first connecting arm is fixed and the second connecting arm is movable.
    [0002]
    Retaining member according to claim 1, CHARACTERIZED by the fact that the support member comprises a first plate (20) and a second plate (22), the first plate (20) and the second plate (22) being spaced apart and parallel to each other and being connected to each other, each between the first plate and the second plate including a closed opening (21), and the closed openings (21) in the first and second plates being aligned to define the opening of the structure main beam (132).
    [0003]
    Retaining member, according to claim 1, CHARACTERIZED by the fact that the first actuator (30) is a hydraulic actuator, a pneumatic actuator or a mechanical actuator.
    [0004]
    Retention member according to claim 1, CHARACTERIZED by the fact that the first retaining arm (16) is integrally connected to the support member, and the second retaining arm (18) is pivotally connected to the support member , and the second end of the first actuator (30) is connected to the second retaining arm.
    [0005]
    Retaining member, according to claim 1, CHARACTERIZED by the fact that the only opening of the main beam structure (132) is square.
    [0006]
    Retention member, according to claim 1, CHARACTERIZED by the fact that the object receiving area includes a center (C), and the object receiving area and the main beam structure opening are positioned in relation to one another so that, in a front view of the retaining member, a vertical line (LL) extending through the center of the object receiving area extends through the center of the opening of the main beam structure.
    [0007]
    Claw connection (1), FEATURED for understanding: a support connection (3) configured to connect to a piece of construction equipment; a lower head assembly (5) connected to the support connection and configured to be able to rotate around an axis of rotation (aa); a retaining assembly (11) pivotally connected to the lower head assembly for pivoting movement about a pivot axis (bb) that is substantially perpendicular to the axis of rotation; the retaining assembly includes a main beam structure (14) that extends along a longitudinal axis that is substantially perpendicular to the axis of rotation and the pivot axis, and a plurality of retaining members (12) according to claim 1, connected to the main beam structure on opposite sides of the pivot axis, with the main beam structure extending through the openings of the main beam structure of the retaining members, each of the plurality of retaining members being able to be switched between a non-holding position and a holding position, and at least one of the holding members being adjustable in position relative to the axis of rotation and the pivot axis in a direction parallel to the longitudinal axis of the main beam structure, and an actuator of position (8) disposed within the main beam structure and connected to the adjustable connection member to adjust the position of the connection member in the main beam structure.
    [0008]
    Claw connection according to claim 7, CHARACTERIZED by the fact that each of the retaining members (12) is adjustable in its position in the main beam structure, and a pair of position actuators (8) arranged within the structure of main beam and connected to the adjustable connection members to adjust the position of the connection members in the main beam structure.
    [0009]
    Claw connection according to claim 7, CHARACTERIZED by additionally comprising tilt actuators (118, 120), each tilt actuator having a first end connected to the lower head assembly and a second end connected to the main beam structure.
    [0010]
    Claw connection according to claim 7, CHARACTERIZED by the fact that the position actuator extends along the longitudinal axis of the main beam structure.
    [0011]
    A system containing a plurality of retaining members according to claim 1, CHARACTERIZED by the fact that each of the connecting members has the first and second claw arms configured differently.
    类似技术:
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    同族专利:
    公开号 | 公开日
    CA2799776C|2014-04-08|
    US8567836B2|2013-10-29|
    US20100308609A1|2010-12-09|
    AU2011264570B2|2014-07-24|
    EP2576410A2|2013-04-10|
    WO2011156099A2|2011-12-15|
    AU2011264570A1|2012-12-13|
    CA2799776A1|2011-12-15|
    WO2011156099A3|2012-05-10|
    CN102917970A|2013-02-06|
    EP2576410B1|2022-01-12|
    US20140028042A1|2014-01-30|
    BR112012031270A2|2016-11-01|
    CN102917970B|2015-07-01|
    EP2576410A4|2014-02-12|
    US9085944B2|2015-07-21|
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    法律状态:
    2018-12-26| B06F| Objections, documents and/or translations needed after an examination request according [chapter 6.6 patent gazette]|
    2019-11-12| B06U| Preliminary requirement: requests with searches performed by other patent offices: procedure suspended [chapter 6.21 patent gazette]|
    2020-06-16| B09A| Decision: intention to grant [chapter 9.1 patent gazette]|
    2020-08-25| B16A| Patent or certificate of addition of invention granted [chapter 16.1 patent gazette]|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 19/05/2011, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US12/794,877|US8567836B2|2007-08-31|2010-06-07|Gripping assembly and gripping members for a grapple attachment|
    USUS12/794,877|2010-06-07|
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