• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Mechanism (10) for a telescopic rig system (1) comprising a telescopic support pillar (2), a drilling pillar (5) for a concrete drilling machine, which drilling pillar is pivotable about a horizontal axis of rotation (59) for positioning the drilling pillar in desired directions. The mechanism comprises an assembly supported along the support column for the outer housing (15) and a said housing, which is arranged to hold the drill column and which comprises horizontally projecting retaining arms from said housing with an arm unit (23, 24) on the side of the rear end section of the drill column extending. in vertical parallel planes, a pivot shaft (60) provided with at least one circular-cylindrical surface which fits said circular holes in the arm units and defines said axis of rotation, extends rotatably through said circular and coaxial holes (31, 32), and clamping elements (61, 62,63) for locking a rear end section (35) of the drill column between said holding units in any of said desired directions. The pivot shaft is pivotally connected to the rear end section of the drill column and the clamping elements on each outer side of the arm units comprise clamping elements which are pivotally connected to the pivot shaft and are releasably pressed, in their reading condition, directly or indirectly, against the arm units on said outer sides of said arm clamps. the rear end section between the arm units. (Fig. 4)
    公开号:SE1000342A1
    申请号:SE1000342
    申请日:2007-10-15
    公开日:2010-07-12
    发明作者:Martin Larsson
    申请人:Husqvarna Ab；
    IPC主号:
    专利说明:

    Fig. 2 is a perspective view showing the mechanism according to the invention mounted on a support pillar and a rear section of a drill pillar directed vertically downwards, Fig. 3 shows the mechanism seen in the same direction as in Fig. 2. with a rear element of the drill column locked in a horizontal direction, Fig. 4 is an exploded view of the mechanism according to the invention, Figs. Fig. 5 shows said rear elements of the drill column seen in the direction of the horizontal axis of rotation for positioning the drill column in desired directions; Fig. 6 shows said rear elements seen as marked by the line VI-VI in Figs. 5, F ig. Fig. 7 shows the same rear element seen as marked by the line VII-VII in Fig. 6, Figs. Fig. 8 is a view of the mechanism according to the invention in section in a vertical plane determined by said axis of rotation and with said rear element of the drill column shown in Fig. 3, this however placed vertically as in Fig. 2 and seen as marked by the arrows A in Fig. 2 and in Figs. 3, and Figs. 9-1 1 show more schematically the working principles in the preferred embodiment of the mechanism according to the invention as described with reference to the preceding drawing figures, partly a mechanism having part of the features of the invention and partly a mechanism according to known technology.
    Detailed Description of the Invention In Fig. 1, a telescopic rig system for attaching and using concrete drills is generally designated 1. It includes a telescopic support column 2 having a lower, first section 3 and an upper, expandable section 4, which can be extended out and into the first section 3. A drilling machine, which is not shown in the clock, can be attached to a quick coupling device 12 on the drilling column 5 in a manner known per se. The lower end of the first section 3 of the telescopic support column 2 and of the drill column 5 is releasably attached to a foot structure 6. Before the drilling machine (not shown) is activated, the lower end of the drill column 5 is released from its engagement with the foot structure 6, so that the drill column 5 and the drilling machine attached to the drill column 5 can be directed against a floor, against a wall or against a ceiling. The quick coupling device 12 which supports the drilling machine can be moved along the column 5 by means of a handle 14 which acts on a gear and rack unit.
    The drill column 5 consists of a pipe 8 with a front end, which can be attached to the foot structure 6 when the drilling machine is not in operation, and a rear element 13, which forms part of the mechanism 10. The pipe 8, which is provided with a rack 11 included in said gear and rack unit, can be releasably attached to said rear element 13 so that the integrated drill column 5 is established as shown in Fig. 1. In the integrated drill column 5 said rear element 13 forms a part of the drill column and it is coaxial with the tube 8.
    Safe operation of the drilling machine requires not only that the rig system 1 is very stable, which can be achieved by the expandable support column 2 being very firmly clamped between the floor and the roof via a roof plate 7 but also by the drill column being securely locked in each selected drilling direction. For this reason, the mechanism 10 is designed in accordance with the invention as will be described below with reference to Figs. 2-9. The mechanism 10, Fig. 3, comprises a housing 15 and, in the housing 15 and projecting upwards therefrom, a sleeve 16, which is mounted on the lower section 3 of the telescopic support pillar 2. Fig. 2. The housing 15 and the sleeve 16 are designed in a manner known per se and can be moved along the said section 3 by means of a movement apparatus comprising a gear (not shown) in a gear housing 17 in cooperation with a rack 18 on the said lower section 3 of the support pillar 2. A detachable handle 19, Fig. 2, is arranged to make it possible to crank the mechanism 10 up and down along the pillar 2.
    The mechanism 10 can be locked in desired positions by means of locking screws which can be turned by means of handles 20, 21 in a manner known per se.
    In the exploded view in Fig. 4, some additional details on the housing 15 are excluded. Other components of the mechanism 10 will now be described with reference to Figs. 4 and Fig. 8.
    Two holding units 23, 24, which are welded to the housing 15, extend horizontally from the housing. Each arm unit 23, 24 consists of two vertical, parallel discs, which are referred to as inner discs 23a, 24a and 24, respectively. outer discs 23b, 24b, a gap 25 and a gap 26 being arranged between the inner and outer discs 23a and 23b, respectively. between the inner and outer disks 24a resp. 24b. Front sections 27 and 28 of the two arm units 23 resp. 24 are parallel to each other. Rear sections 29, 30 of each arm unit are bent at a slight angle so that they widen the gap between the arm units 23 and 24 adjacent the housing 15 in the manner shown in the drawings. Circular through holes 31 and 32 are received in the discs 23a, 23b and 24a, 24b in the area of the parallel front sections 27 and 28 of the two arm units 23, 24.
    The rear element 13 of the drill column 5 has a rear end section 35 and, at the opposite end, a fastening section 34 with a male coupling element 36. A female coupling element 37 is attached to the rear end of the pipe 8. In combination, the male and female coupling elements 36 allow , 37 and a locking screw 74, Fig. 2, a secure attachment of the pipe 8 to the mechanism 10. The pipe 8, and thus the drilling machine (not shown) mounted on the coupling device 12, can be rotated about the longitudinal central axis of the drill column 5 and is locked in four different positions by means of a locking screw 38 which is arranged in an intermediate section 39 between the rear end section 35 and the coupling element 36, 37. A screw hole is denoted by 40.
    Reference is now also made to Fig. 5, Fig. 6 and Fig. 7, which show the rear element 13 and its rear end section in more detail and then also its interior. The main part of the rear end section 35 consists of a square pipe piece 42 which has two first, parallel pipe surfaces 43a, 43b and two second, opposite and parallel pipe surfaces 44a, 44b, which form a right angle with the plane of the first pipe surfaces. A first tray 45a is welded to the first tube surface 43a, and a second tray 45 is similarly attached to the opposite side of the tube surface 43. Circular coaxial holes 46 are provided in the first and second washers. , a hole in each washer. The holes 46 are the same size as the holes 31 and 32 which are received in the sleeve units 23 and 24. The outer surfaces of the first and the second washer 45a and 45b form first and second side surfaces 47a and 32, respectively. 47b on the rear end section 35. These first and second side surfaces 47a and 47b are parallel, flat and vertical in the mechanism 10 as shown in Figs. 4 to 7. Circular, coaxial holes 48 of the same size as the heel 31, 32 and 46 are also accommodated in the side walls of the rear end section 35, on which the first and second washers 45a and 45b are 10 15 20 25 30 35 40 45 4 attached. These first and second washers 45a and 45b have two tasks. One task is to provide the annular surfaces 47a and 47b, which are to act against the inner surfaces of portions of the inner discs 23a and 23b, which surround the holes 31 and 32 to contribute to the locking function of the mechanism 10. Another task is to distribute the clamping force to be exerted in the assembly so that the first pipe walls of the rectangular pipe section 42 are not damaged.
    Inside the rectangular pipe section 42 there is a body 50 between the two opposite side walls, against the inner surfaces of which the tubular body 50 is welded. According to the embodiment, the tubular body 50 has an outer circular contour with a larger diameter than the circular holes 46, 48. The channel 51 through the body 50 has a square cross-section and is coaxial with the circular holes 46, 48. As can be seen from Fig. 5, the contour of the channel 51 is accommodated completely within the surface of the circular holes 46 and 48.
    A spirit level 52 is housed in a recess 53 in each of the said second pipe walls 44. In the composite mechanism 10, the rectangular end section 35 of the drill column is covered by a plastic cap 54.
    In line with the first and second washers 45a and 45b and the tube channel 51 in the tubular body 50, the composite mechanism 10 has three more washers, namely a third washer 56, which is housed in the slot 25, a fourth washer 57, which is housed in the gap 26, and a fifth washer 58 which is arranged outside the outer disc 24b. These third, fourth and fifth washers 56, 57 and 58 have equal square holes 56a, 57a, 58a of a size corresponding to the square cross-section of the square channel 31 through the tubular body 50 inside the rectangular end section 35. All the said circular and rectangular holes are coaxial.
    A pivot shaft 60 and a nut 61 serve as force generating elements. For this purpose, the pivot shaft 60 at one end has a thread 62 which cooperates with a nut 61 and a large screw head at the other end with a diameter equal to the diameter of the said washers 45a, 45b, 56, 57, 58.
    The pivot shaft 60 has four surfaces 65 which fit against the sides of the square holes 56a, 57a, 58a in the third, fourth and fifth washers 56, 57 and 58 and in the square cross-section of the channel 51 in the tubular body 50 in the end section 35. Furthermore, the pivot shaft 60 between the eight surfaces 65 has four circular-cylindrical surfaces 66 which fit in the circular holes 31 and 32 in the first and second arm units 23 and 24 and the circular holes 46 and 48. This allows the pivot shaft 60 to rotate around its axis of rotation 59 and is stored in the circular holes 31 and 32 in the discs of the holding units when the clamping force ceases by easing the nut 58a but preventing it from rotating in the square holes 56a, 57a and 58a in the third, fourth and fifth washers and also prevented from turning in the end section 35 due to the square cross-section of the channel 51 in the tubular body 50.
    As most clearly seen in Fig. 8, the discs and washers form a compact package in their clamped, reading condition between the clamping members 63 and 58 when the nut 61 is tightened against the clamping member / fifth washer 58. In this package, the outer disc 23b of the first holding unit is 23 is clamped between said third washer 56 and the combined screw and pivot shaft head 63. The third washer 56 is clamped between the inner and outer discs 23a and 23b of the first holding unit 23. the disc 23a is clamped between the third washer 56 and the first washer 45a, while the fourth washer 57 is clamped between the inner disc 24a and the outer disc 24b of the second hob assembly 24.
    Furthermore, in the package, the rear end section 35 with its first and its second washer 45a, 45b is sandwiched between the inner surface of the inner disc 23a of the first arm unit 23 and the inner side of the inner disc 24a of the second arm unit 24, the the tubular body 50 serves as a reinforcement of the rectangular end section 35 and supports the walls 43. The inner disc 24a of said second holding unit 24 is clamped between the second washer 45b and the fourth washer 57, which in turn is clamped between said inner the disc 24 and the and said outer disc 24, while the outer disc 24b in the second holding arm 24 is sandwiched between the fourth washer 57 and the fifth washer 58. In other words, there are a large number of surfaces which are pressed against each other.
    In fact, surfaces of discs and washers (the pivot shaft head also serves as a washer in this case) are clamped against each other in eight different plan planes of plane, which are symbolically represented by arrows in Fig. 9. As a comparison, in a conventional locking mechanism which is shown in Fig. 11 only two plan planes of action. In this context, the term fi friction plane refers to a plane in which a relative motion can occur between two surfaces in contact with each other if the friction force fi is overcome. In the inventive mechanism, a torque acting on the drill column 5 is transmitted as a torque acting on the pivot shaft via the tubular body 50 which is non-rotatably mounted on the pivot shaft 60. The torque is transmitted by the pivot shaft to the washers 56, 57 and 58, which are also non-rotatably mounted on the pivot shaft, and also to the pivot shaft head 63, which forms an integral part of the pivot shaft.
    It is assumed that the clamping fi generating elements, i.e. the pivot shaft 60 in its role as a screw and the nut 62 produces an axial chuck kra F, the objects which are pressed against each other in the approximate friction planes are pressed against each other with the same force F in all the friction planes. The frictional forces which develop in the eight friction planes in the embodiment according to the invention, Fig. 9, are therefore added to each other. It is further assumed that the fi coefficient of friction is the same in all the eight friction planes in the i fi g. 9 shows the embodiment of the invention and also in the two friction planes in the mechanism belonging to the prior art shown in Fig. 11, the mechanism according to the invention generates four times as large a total friction force fi as the known mechanism. The execution form in fi g. Fig. 10 has only two discs according to the prior art but still creates four friction planes and is therefore twice as efficient as a locking device than the known mechanism in Fig. 11.
    In principle, it is also possible to construct a mechanism according to the invention in which the number of discs is not the same on both sides of the rear end section 35 of the drill column but a correlated number of washers is used in accordance with the principles of the invention as described above.
    In order to further increase the clamping force, and thus also the fiction forces fi, the thread 62 on the pivot shaft 60 and the corresponding thread on the nut 61 are made with an unconventionally small pitch. It is also possible to use other clamping devices than a screw and nut coupling, for example a bolt and wedge coupling, in which the bolt may have a head at one end and a longitudinal through slot in the other end in which a kil at wedge fits.
    The mechanism 10 also has a further reading device, which is of a conventional type, which is useful when the drill column 5 is raised to a horizontal position, Fig. 4. This reading device has two locking grooves 69 and 70 attached to a shaft 71, which extends through two circular holes in the second pipe walls 44 of the rear end section 35. When the drill column 5 is in the horizontal position, the shaft 71 can be rotated in the heel 72 by means of a handle 73, so that the reading arms 69 and 70 are rotated 9GB as shown in Figs. In this position, the reading arms 69 and 70 are pressed against the upper and lower edges of the vertical discs 23a, 23b and 24a, 24b, while the reading arms 69 and 70 are also pressed against the other side surfaces 44a and 44b of the said rear end section and locks the drill column 5 in its horizontal position. Also in this case the reading based on friction between a large number of surfaces including discs, washers and screw and nut coupling plays a role, since in the case that the conventional reading device 68 fails, for example due to the shaft 71 being inadvertently rotated by means of the handle 73, the heavy drill does not fall down but is kept in its position, so that the extra reading can be restored with the aid of the locking device.
    It should be noted that the mechanism 10 according to the invention can be modified within the scope of the invention. For example, the number of discs in each of the holding units can be greater than two and the number of washers placed between the discs with square heels can be increased correspondingly in order to increase the number of friction surfaces in the assembly. The discs 23a, 23b, 24a, 24b are suitably made of steel, which gives them a certain flexibility in the horizontal direction, as is desirable and important, since it makes it possible to squeeze the discs and washers efficiently even if the manufacturing accuracy is not perfect. The various washers described above are also suitably made of steel, but other materials may also be considered, especially materials with a larger coefficient of friction, as well as the use of washers and / or discs covered with a high friction material. In the embodiment, the slots 25 and 26 between the inner and outer discs extend all the way from the housing along the rear and front sections 27-30 of the pouring arm units 23, 24 all the way from the housing along the front and rear sections 27-30 of the holding units 23. , 24, which is convenient. However, it is conceivable to limit the extent of the gaps 25, 26 to only the front sections 27, 28, which would make the rear sections 29, 30 stronger but give the front sections 27, 28a sufficient fl flexibility in the horizontal direction. It is also possible to design the part of the rear end section 35 of the drill column which forms a central part of the package of collapsed elements as a solid flat bar with a through hole with a square cross-section.
    权利要求:
    Claims (21)
    [1]
    1. 0 15 20 25 30 35 40 45 PATENT REQUIREMENTS l.
    [2]
    A mechanism (10) for a telescopic rig system (1) comprising a telescopic support pillar (2), a drilling pillar (5) for a concrete drilling machine, which drilling pillar is pivotable about a horizontal axis of rotation (59) for positioning the bone pillar in the desired shaft. the directions in which said mechanism, comprising a housing (15) dryable along the support column and a unit supported by said housing, which is arranged to hold said drill column and which comprises holding arms horizontally projecting from said housing with an arm unit (23 , 24) on each side of the rear end section of the drill column extending in vertical parallel planes, a pivot shaft (60) provided with at least one circular-cylindrical surface which fits in said circular holes in the arm units and defines said axis of rotation rotatably extending through said circular and coaxial holes (31, 32) in said housing units, and clamping elements (61, 62, 63) for locking a rear end section (35) of the drill column between said pouring units in which any of said desired directions, characterized in that the pivot shaft is non-rotatably connected to the rear end section of the drill column and that said clamping elements on each outer side of the arm units comprise clamping elements which are non-rotatably connected to the pivot shaft and are releasably pressed, in their reading condition, directly or directly towards the surfaces of the arm units on said outer sides of the arm units, clamping and reading the rear end section between the arm units.
    [3]
    Mechanism according to claim 1, characterized in that at least one of the arm units comprises at least two vertical, parallel discs (23a, 23b; 24a, 24b), that adjacent through holes, which are circular and coaxial, are present in said vertical discs, that a washer (56, 57) is spaced between each pair of said vertical discs, which lie next to each other and touch the surfaces facing said washers on said discs, and that said washers are non-rotatably mounted on the pivot shaft.
    [4]
    Mechanism according to claim 2, characterized in that both arm units comprise at least two vertical, parallel discs.
    [5]
    Mechanism according to any one of claims 1 to 3, characterized in that said washer resp. each of said washers, has a continuous heel (56a, 57a) having at least one non-circular sector, that the pivot axis extends through said hole or the said holes and that the pivot axis over its length has at least one non-circular sector (65) which fits and engages said at least one non-circular heel in the washer or washers.
    [6]
    Mechanism according to claim 4, characterized in that the pivot axis has over its length a number of first sectors (66), which are circular-cylindrical in cross-section, fit in said circular holes in said discs, and, between said first sectors, second sectors (65) , which in cross section has non-circular sides which correspond to sides of non-circular holes in said washers.
    [7]
    Mechanism according to claim 4, characterized in that the holes (56a, 57a) in the washers have the contour of a square with circularly rounded corners and that the pivot axis has a corresponding cross section. 10 15 20 25 30 35 40 45 10. 11 12. 13. 14. 15. 16. 17 18.
    [8]
    Mechanism according to claim 4, characterized in that the pivot axis is designed as a circular cylinder having at least one longitudinal groove and that the washers are formed with a circular hole with at least one radial projection which fits in said groove and forms a sprint joint between each washer and swivel shaft.
    [9]
    Mechanism according to any one of claims 1 to 7, characterized in that said pivot shaft has a clamping element at each end acting directly or indirectly against the outer disc surface of the respective arm unit.
    [10]
    Mechanism according to claim 8, characterized in that the clamping element in a first end of the pivot shaft is constituted by a head (63) which is integral with the pivot shaft.
    [11]
    Mechanism according to claim 9, characterized in that the clamping element (61) at the opposite, other end of the pivot shaft acts against a washer (58) which is non-rotatably mounted on the pivot shaft and is in contact with the outer surface of an arm unit (24). .
    [12]
    Mechanism according to claim 10, characterized in that said washer (58) touching said outer surface of an arm unit (24) has a through hole (58a) with the same contour as the holes (56a, 57a) in the washer or the washers (56, 57) housed between the discs.
    [13]
    Mechanism according to any one of claims 2 to 9, characterized in that the washers (56, 57) accommodated between said discs are a mechanism according to any one of claims 10 to 12, characterized in that also said washer (5 8) , which touches and is clad against an outer surface of an arm unit, has at least one contact surface.
    [14]
    Mechanism according to claim 10 or 11, characterized in that the pivot shaft has a screw thread (62) at said opposite other end and that the clamping element at that end is a nut (61) which fits said screw thread.
    [15]
    Mechanism according to any one of claims 1 to 14, characterized in that the rear end section (35) of the drill column has two first, opposite and parallel side surfaces (47a) facing and touching the side surfaces of the two arm units.
    [16]
    Mechanism according to claim 15, characterized in that the rear end section of the drill column comprises at least one body (50) forming a pressure-resistant connection between said two first side surfaces of said rear end section, that an axially through hole (51) is provided. in said body and that the pivot axis extends irrevocably through said through hole in said body. .
    [17]
    Mechanism according to claim 16, characterized in that at least a part of said through-hole in said body has a cross-section in a non-circular contour which matches the non-circular contour of the pivot axis.
    [18]
    Mechanism according to any one of claims 16 and 17, characterized in that said first two side surfaces of the rear end section of the bonnet are outer surfaces of two washers (45a, 45b), which are permanently attached to said rear end section. 10 15 20
    [19]
    Mechanism according to any one of claims 16 to 18, characterized in that the rear end section of the drill column has two second,, ata, opposite and parallel side surfaces (44a, 44b) in planes forming right angles with the plane of said first side surfaces.
    [20]
    Mechanism according to any one of claims 1 to 19, characterized in that a
    [21]
    A locking device (68) for providing an additional locking of the drill column in its horizontal position comprises a first locking arm and a second locking arm (69, 70) facing said second surfaces (44a, 44b) of the rear end section (35). , said locking arms in non-horizontal positions of the drill column are oriented in the direction of the drill column and that the locking means, when the drill column has assumed a horizontal position, can be rotated by means of a shaft (71) extending through said rear end section behind the pivot shaft ( 60), from said orientation in the direction of the drill column to a cross-section in which they are pressed against the upper and lower edges of said arm units, said pivot shaft (60) reading the rear end section and thereby reading the entire drill column in its horizontal position. Mechanism according to claim 20, characterized in that said locking arms, when turned in said transverse direction, are also pressed against said second side surfaces (44a, 44b) on the rear end section behind the pivot shaft.
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    同族专利:
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    引用文献:
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    PCT/SE2007/000901|WO2009051524A1|2007-10-15|2007-10-15|Mechanism for a telescopic rig system|
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