• 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:
    This lifting unit (1) comprises: - a jib foot (2) forming the proximal part of an arrow in the service configuration, - a counter-jib (4) supporting a balancing ballast (5), a part for securing (6) between the jib foot (2) and the counter-flap (4) for securing the lifting unit (1) to a mast (104), and - a jack (8) connected to the jib foot (2) ) so that the jib foot (2) is movable between a lowered position and a raised position. The second cylinder part (8.2) is connected to the securing part (6).
    公开号:FR3046152A1
    申请号:FR1563218
    申请日:2015-12-23
    公开日:2017-06-30
    发明作者:Michel Lissandre；Sylvain Raymond；Gabriel Fraisse；Michael Mollenthiel；Lovera Tania Garcia；Florent Mourin
    申请人:Manitowoc Crane Group France SAS；
    IPC主号:
    专利说明:

    The present invention relates to a lifting unit for composing a luffing jib crane. In addition, the present invention relates to a luffing jib crane comprising such a lifting unit. Furthermore, the present invention relates to an assembly method for assembling such a luffing jib crane.
    The present invention applies to the field of tower cranes comprising a luffing jib. The present invention is applicable to several crane structures, for example to structures composed of lattices and frames. GB1374253A discloses a tower crane comprising a mast, a luffing jib, a lifting unit and a turning device for rotating the lifting unit. The lift unit of GB1374253A comprises a proximal part of the luffing jib, a counter-boom supporting a balancing ballast, a securing part arranged between the boom and the counter-boom, and a jack which is substantially vertical. and which is connected, on the one hand, to the boom and, on the other hand, to the mast.
    However, the lifting unit of GB1374253A is cumbersome, which makes it necessary to detach the cylinder from the boom and the mast before transporting the crane. However, in disassembled configuration, the connecting elements between boom, cylinder and mast are exposed to shocks and pollution, which reduces their service life as the multiple disassemblies of the crane. In addition, the operations of assembly or disassembly of the crane are quite long. In addition, the number of parts to be managed and stored separately is relatively large.
    The present invention is intended in particular to solve, in whole or in part, the problems mentioned above.
    For this purpose, the subject of the present invention is a lifting unit, for composing a luffing jib crane, the luffing unit comprising at least: a jib foot intended to form the proximal part of an arrow belonging to the crane with luffing jib when the lifting unit is in the service configuration, a counter-jib configured to support a ballast intended to balance the boom, a securing part arranged between the foot of the boom and the counter-boom, the securing part comprising a securing portion configured to secure the lifting unit to a mast of the luffing jib crane, and a jack comprising a first cylinder portion and a second cylinder portion, the first cylinder portion being mechanically connected to the foot of the luffing jib crane; boom so that the boom foot is movable at least between a lowered position and a raised position, the lift unit being configured e to be placed at least: in a service configuration, in which the jack can move the jib foot between the lowered position and the raised position, and in a transport configuration, in which the jib foot is in the lowered position, the lifting unit being characterized in that the second cylinder part is mechanically connected to the securing part.
    In other words, the jack extends between the foot of the arrow and the against-arrow. When the jib foot is in the lowered position, the jack is in a retracted position. Unlike the cranes of the state of the art, the second part of the cylinder is not mechanically connected to the mast of the crane.
    Thus, such a lifting unit has a relatively small footprint, because the cylinder is mechanically connected firstly to the foot of the arrow and secondly to the securing part. With a relatively small footprint, the lifting unit can be transported, assembled on a crane, then disassembled from a crane as a unitary block, that is to say by keeping all its components (foot of arrow, counter boom, securing part, cylinder) mechanically connected to each other.
    Consequently, the connecting elements of the jib foot, the fastening part, the jib and the jacks can remain mechanically connected permanently, in particular during the initial assembly at the factory, during transport, storage, assembly, disassembly, corrective or preventive maintenance of the lifting unit.
    These permanent connections make it possible to protect the connecting elements against shocks or pollution, in particular the joints of the jib foot and the articulations of the jack, thus maximizing their service life. Indeed, the ball joints of the boom and the joints of the cylinder are always mechanically connected to the structure of the lifting unit. However, in a crane of the state of the art, the connecting elements, which are relatively fragile, may be damaged during multiple assemblies and disassemblies.
    In addition, a lifting unit according to the invention reduces the duration of assembly or disassembly operations of the luffing jib crane. Moreover, such a lifting unit improves the safety of the operators responsible for these assembly or disassembly operations. In addition, such a lifting unit reduces the number of parts to be managed and stored separately, because all the components of the lifting unit remain attached to each other.
    The foot of the arrow corresponds to the base of the arrow, that is to say to the proximal part of the arrow. The boom foot generally compasses a pivot axis, around which the cylinder raises or lowers the boom when the lifting unit is in use. The boom foot is movable between a lowered position and a raised position when the lifting unit is in use.
    In the present application, the terms "proximal" and "distal" characterize an element according to its position, near or far, with respect to the counter-arrow. Thus, a proximal member is relatively close to the jib, while a distal member is relatively far from the jib.
    According to a variant, the securing part comprises a punch.
    According to a variant, the securing portion is configured to join by embedding at the top of the mast of the luffing jib crane.
    Alternatively, the securing portion has a generally triangular section in a vertical plane including the vertical axis about which the arrow rotates when the luffing jib crane is in use. The securing part may for example have a prismatic shape with a triangular base or a tetrahedral shape with a triangular base.
    Alternatively, the lifting unit further comprises a hoist winch for lifting a load suspended from the boom.
    According to a variant, the securing portion directly connects the foot of the arrow to the against-arrow. Alternatively, the securing portion may indirectly connect the foot of the arrow to the against-arrow, that is to say with at least one intermediate component between the foot of the arrow and the against-arrow.
    By definition, the against-arrow is arranged opposite the foot of the arrow relative to the securing portion. The counter-boom is arranged opposite the foot of the boom relative to the mast when the lifting unit is assembled on the luffing jib crane in the service configuration. Thus, the counter-boom performs the counterweight function to compensate for the dead weight of the boom plus the weight of the load suspended from the boom.
    According to one embodiment, the securing part further comprises a connecting portion which is configured to mechanically connect the boom foot to the against-arrow.
    Thus, such a connecting portion provides mechanical cohesion of several components of the lifting unit.
    According to one embodiment, the first cylinder part and the second cylinder part are each equipped with a hinge ball joint, and the first cylinder part and the second cylinder part are mechanically connected respectively to the boom foot and to the securing part not only in the service configuration but also in the transport configuration.
    In other words, the cylinder remains attached to the jib foot at each assembly and disassembly of the luffing jib crane. It is therefore not necessary to separate the cylinder from the boom foot.
    Thus, the lifting unit forms a unitary block easy to transport, to assemble on a crane and to disassemble a crane. In addition, this unit block protects the cylinder.
    According to one embodiment, the jack is located generally between a distal region of the foot of the boom and the securing portion.
    Thus, such a cylinder does not exceed or little of a volume defined by the foot of the arrow and the against-arrow. The lifting unit has a small footprint, which makes it easily transportable and manipulable.
    According to one variant, the jack is totally located in a volume delimited on the one hand by the foot of the boom and on the other by the counter-boom.
    According to one embodiment, the jack is a linear jack configured to move from a retracted position, in which the boom foot is in the lowered position, to an extended position, in which the boom foot is in the raised position, the jack in the retracted position extending in a cylinder direction which forms an angle of between -30 degrees and +30 degrees with a horizontal direction when the lifting unit is in the transport configuration.
    Thus, the lifting unit can be stored and transported in a conventional container (40 feet) whose bottom wall is horizontal.
    According to a variant, when the jack is in the retracted position, the jack direction is substantially parallel to the horizontal direction.
    According to a variant, the first cylinder portion is located on a distal end portion of the cylinder, and the second cylinder portion is located on a proximal end portion of the cylinder. For example, the first actuator portion may be located at the distal end of the actuator, and the second actuator portion may be located at the proximal end of the actuator.
    According to one embodiment, the jack is configured to be in the retracted position when the lifting unit is in the transport configuration.
    Thus, the lifting unit is particularly compact in transport configuration. In addition, the cylinder rod is protected in this transport configuration.
    According to one variant, the jack is also in the retracted position when the lifting unit is in the handling, storage, assembly, disassembly and maintenance phases. Thus, the cylinder can be protected, particularly its rod, against aggression, shocks, corrosion and external pollution during all handling of the cylinder.
    According to one embodiment, the boom foot comprises an upper part and a lower part, the upper part being situated above the lower part when the lifting unit is in service configuration with the foot of the boom in the lowered position. , the lifting unit further comprising a pivot axis arranged between the jib foot and the counter-jib so that the pivot axis is located higher than the lower part when the lifting unit is in a configuration of with the boom foot in the lowered position, the upper part being fixed to the pivot axis and the lower part being fixed to the first part of the jack, so that the jack can push the boom along an axis extending substantially in the extension of the lower chords of the boom when the lifting unit is in the service configuration with the boom foot lowered.
    Thus, such a position of the pivot axis, around which the cylinder raises or lowers the boom, frees a space for implanting the cylinder and form a rigid assembly. In addition, such a position of the pivot axis makes it possible to free a space sufficient to house the jack, so that the jack can push the boom with a relatively large force while allowing an overall space easily transportable when the jack is in position. retracted position.
    Alternatively, the pivot axis is located substantially at the altitude of the upper part when the lifting unit is in the service configuration with the foot lowered. Thus, this makes it possible to keep the fluidic and / or electrical connections of the jack in the retracted position when the lifting unit is in transport configuration (compact). Conversely, in the state of the art, the jack generally bears on the vertical mast of the luffing jib crane, which involves disconnecting the jack before transporting the components of the luffing jib crane.
    According to one embodiment, the pivot axis is mechanically connected to the securing part not only in the service configuration but also in the transport configuration.
    According to a variant, the pivot axis is provided with articulation ball joints.
    According to one embodiment, the lifting unit further comprises a feeding device configured to supply energy to the jack so as to raise the jib foot, the feed device being fixed to the counter-boom so that the feeder can be transported with the counter-boom when the lifting unit is in transport configuration.
    Thus, such a cylinder supply device is transportable with the other components of the lifting unit, which eliminates the disassembly of the supply device.
    Alternatively, the feed device is fixed to the cons-arrow removably. Thus, the feed device can be detached and transported separately from the other components of the lifting unit or the handling or assembly machine, which is useful when the transport vehicle has a small capacity.
    According to one embodiment, the jack is a hydraulic linear jack, and the feed device is a hydraulic unit.
    Alternatively to this embodiment, the jack is an electric linear jack, and the power device is a power plant.
    According to one embodiment, the lifting unit further comprises: conduits for conducting the liquid between the feed device and the jack, and quick couplings arranged between the jack and the feed device, the quick couplings being located closer to the feeder than the cylinder.
    Thus, such quick couplings limit the risk of leakage and pollution of the transmission fluid (eg oil) in the cylinder, because the ducts can remain connected to the hydraulic linear cylinder even when disassembling the hydraulic unit. In addition, all the removable elements (cylinder, quick coupling) are grouped in the same zone, which facilitates the maintenance work.
    According to one variant, the quick couplers are placed in the junction region between the counter-jib and the securing part.
    Alternatively, the hydraulic unit is located near the cylinder.
    According to one embodiment, the lifting unit has a maximum length of less than 12 m, a maximum width of less than 2.25 m and a maximum height of less than 2.5 m.
    Thus, the size of the lifting unit substantially corresponds to the road transport templates, rail or maritime. For example, the bulk of the lifting unit is smaller than the volume of a conventional container 40 feet long, which allows to easily transport the lifting unit. So these dimensions allow the foot of the arrow to remain always connected to the against-arrow via the securing part.
    According to one embodiment, the securing part comprises ribs assembled so as to form an indeformable assembly.
    Thus, such an indeformable assembly forms, on one side, a part embedded in the mast to support the counter-arrow and, on the other side, a hinge support for the foot of the arrow, so for the arrow.
    According to a variant, the ribs of the securing part are dismountably assembled.
    Alternatively to this variant, the ribs of the securing part are assembled in a way that can not be dismantled. In other words, the securing part is monobloc.
    According to a variant, the counter-arrow and the securing portion are monobloc. In this variant, the securing portion extends the against-arrow at the top of the mast.
    According to a variant, the lifting unit further comprises a rotation device which is configured to rotate the lifting unit about a substantially vertical axis when the lifting unit is in operation. Thus, such a rotation device can be transported in the unit block forming the lifting unit, which dispenses with mounting and dismounting the rotation device.
    In addition, the present invention relates to a luffing jib crane comprising: an arrow configured to distribute a suspended load, a mast configured to support the boom and the suspended load, and a luffing unit according to the invention, the unit lifting device being mechanically connected to the mast and secured to the boom.
    According to one variant, the rotation device comprises a cabin unit. Alternatively, the cabin unit and the rotation device can be assembled separately.
    Alternatively, the luffing jib crane further comprises a rotation device configured to rotate the luffing unit and the luffing jib about a substantially vertical axis when the luffing jib crane is in use.
    According to one embodiment, the against-arrow and the securing part are mechanically connected by embedding.
    Furthermore, the present invention relates to a method of assembling a luffing jib crane according to the invention, comprising the steps of: raising the mast, attaching on the mast a rotation device belonging to the lifting unit, assemble the lifting unit on the rotation device, mechanically connect the boom to the foot of the boom.
    Thus, such an assembly method reduces the disassembly time of a luffing jib crane.
    Alternatively, the assembly method further comprises a step of balancing the luffing jib crane by placing ballast on the counter-jib.
    Alternatively, the assembly method further comprises a step of setting security. After this adjustment step, the cylinder can push the foot of arrow, so raise the arrow.
    The embodiments and variants mentioned above may be taken individually or in any combination technically possible.
    The present invention will be well understood and its advantages will also emerge in the light of the description which follows, given solely by way of nonlimiting example and with reference to the appended figures, in which identical reference signs correspond to objects structurally and / or functionally identical or similar. In the appended figures: FIG. 1 is a side view of a lifting unit according to the invention, in a transport configuration; Figure 2 is a perspective view of the lifting unit of Figure 1; Figure 3 is a side view of a cons-arrow component of the lifting unit of Figure 1; Figure 4 is a perspective view of the against-arrow of Figure 3; Figure 5 is a side view of several components of the lifting unit of Figure 1; Figure 6 is a perspective view of the components shown in Figure 5; Figure 7 is a side view of a portion of a luffing jib crane according to the invention and comprising the lifting unit of Figure 1; Figure 8 is an enlarged view of Detail VIII in Figure 7; and Figure 9 is a flowchart illustrating an assembly method according to the invention.
    Figures 1, 2, 3, 4, 5 and 6 illustrate a lifting unit 1 according to the invention, to compose a luffing jib crane 100. The luffing jib crane 100 is illustrated in Figures 8 and 9. The crane Luffing boom 100 comprises: an arrow 102, which is configured to distribute a suspended load not shown, a mast 104, which is configured to support the boom and the suspended load, the lifting unit 1, which is mechanically connected to the mast 104 and secured to the arrow 102, as described below, and a cabin unit 107, which is here fixed on the mast 104. The lifting unit 1 comprises an arrow foot 2, a counter-arrow 4, a securing part 6 and a jack 8. The lifting unit 1 is configured to be placed: in a service configuration (FIGS. 7 and 8), in which the jack 8 can move the stalk 2 between a lowered position and a raised position, and in a configurable transport (Figure 2), wherein the foot of arrow 2 is in the lowered position and the cylinder 8 is in the retracted position.
    In the transport configuration (FIG. 2), the lifting unit 1 has a maximum length L1 of less than 12 m, a maximum width W1 of less than 2.25 m and a maximum height H1 of less than 2.5 m.
    The jib foot 2 is intended to form the proximal part of the jib 102 when the lifting unit 1 is in the service configuration (FIGS. 7 and 8).
    The counter-jib 4 is configured to support a weight 5 intended to balance the boom 102. For this purpose, the counter-jib 4 comprises i) a rear portion 4.2 having a ballast receiving space 5 and ii) retaining rods. 4.5 arranged to guide and hold the ballast 5. The bottom of the counter-boom 4 comprises a platform extending from the rear portion 4.2 to the securing portion 6. When the lifting unit 1 is in use, the Ballast 5 supported by the counter-boom 4 serves to balance the boom 102 against the dead weight and the raised load.
    The securing part 6 comprises: a securing portion 6.1 which is configured to secure the lifting unit 1 to the mast 104; and a connecting portion 6.2 which is configured to mechanically connect the jib foot 2 to the counter-jib 4.
    In the example of the figures, the securing portion 6.1 is configured to be secured by fitting to the top 105 of the mast 104. For this purpose, the securing portion 6.1 is here secured to the top 105 of the mast 104 by pins 6.10. The against-arrow 4 and the connecting portion 6.2 are here mechanically connected by embedding, so integral and without degree of mobility between them.
    The connecting portion 6.2 is arranged between the jib 2 and the counter-jib 4. The connecting portion 6.2 connects, here directly, the jib 2 to the counter-jib 4. The jib 2 and the against -flèche 4 are mechanically connected via the connecting portion 6.2.
    The securing part 6 here comprises chords 6.0 assembled so as to form an indeformable assembly. The chords 6.0 are here assembled removably. As the securing portion 6 supports the boom 102 when the luffing jib crane 100 is in use, the securing portion 6 is sometimes referred to as "boom holder".
    The securing part 6 has a generally triangular section in a vertical plane including the substantially vertical axis Z around which the arrow 102 rotates when the luffing jib crane 100 is in use. The securing part 6 here has a prismatic shape with a triangular base, as shown in FIG. 2.
    The cylinder 8 comprises a first cylinder part 8.1 and a second cylinder part 8.2.
    The first cylinder part 8.1 is mechanically connected to the jib 2 so that the jib 2 is movable between the lowered position and the raised position. When the luffing jib crane 100 is in use, the jack 8 makes it possible to raise or lower the jib 102, by means of the jib foot 2. In the example of the figures, the first jack portion 8.1 is located at the distal end of the cylinder 8. The first cylinder part 8.1 is mechanically connected to the jib 2 by a pivot connection about a pivot axis Y8.1 visible in FIGS. 5 and 6.
    The second cylinder portion 8.2 is mechanically connected to the connecting portion 6.2. In the example of the figures, the second cylinder portion 8.2 is located on the proximal end of the cylinder 8. The second cylinder portion 8.2 is mechanically connected to the connecting portion 6.2 by a pivot connection about a pin axis. pivot Y8.2 visible in Figures 5 and 6.
    The jack 8 is here a hydraulic linear cylinder, which is configured to move from a retracted position, in which the jib foot 2 is in the lowered position, to an extended position, in which the jib foot 2 is in the raised position.
    The first cylinder part 8.1 and the second cylinder part 8.2 are each equipped with a hinge ball joint. The first part of cylinder 8.1 is mechanically connected to the foot of the boom 2, by its hinge joint, not only in the service configuration but also in the transport configuration. Similarly, the second cylinder portion 8.2 is mechanically connected, by its hinge joint, to the connecting portion 6.2 not only in the service configuration but also in the transport configuration. The lifting unit 1 further comprises a feeding device 10 which is configured to supply energy to the jack 8 so as to raise the jib foot 2. The feed device 10 is here a hydraulic unit configured to feed the jib. cylinder 8 in hydraulic energy. When powered, the jack 8 can raise the jib foot 2. The feed device 10 is here relatively close to the jack 8, opposite the location for the ballast 5.
    The feeder 10 is attached to the counter-boom 4. The feeder 10 can thus be transported with the counter-boom 4 when the lifting unit 1 is in the transport configuration. The feeder 10 can remain attached to the counter-boom 4.
    The jack 8 is a linear jack configured to pass: a retracted position (Figures 2, 5 and 6), wherein the foot of the boom 2 is in the lowered position; the jack 8 is in the retracted position when the lifting unit 1 is in the transport configuration; in an extended position, in which the jib foot 2 is in the raised position.
    The jack 8 extends between the jib foot 2 and the counter-jib 4. The jack 8 is located generally between a region distal of the jib 2 and the securing portion 6. The jack 8 is here completely located in a volume delimited on the one hand by the foot of arrow 2 and on the other hand by the counter-arrow 4.
    When the cylinder 8 is in the retracted position, the cylinder direction X8 here forms an angle A8 approximately equal to -20 degrees with the horizontal direction X, as shown in Figures 1 and 8. The cylinder 8 is in the retracted position when the lifting unit 1 is in transport configuration. The cylinder 8 is also in the retracted position when the lifting unit 1 is in handling, storage, assembly, disassembly and maintenance phases. The cylinder 8 can also be in the retracted position when the lifting unit 1 is in the service configuration with the jib foot 2 in the lowered position. The lifting unit 1 further comprises ducts 12 for conducting the liquid between the supply device 10 and the cylinder 8. In addition, the lifting unit 1 comprises quick couplers 14 arranged between the jack 8 and the device The quick couplers 14 are located closer to the supply device 10 than the cylinder 8. The quick couplers 14 can be placed in the junction region 4.6 between the counter-jib 4 and the securing part 6.
    The boom foot 2 comprises an upper part 2.1 and a lower part 2.2. The upper part 2.1 is located above the lower part 2.2 when the lifting unit 1 is in service configuration with the foot of the boom 2 lowered (Figures 5 and 6). The lifting unit 1 further comprises a pivot axis Y2.4. The pivot axis Y2.4 is arranged between the foot of the arrow 2 and the counter-arrow. Thus, the pivot axis Y2.4 is located higher than the lower part 2.2 when the lifting unit 1 is in service configuration with the foot of the boom 2 lowered (Figures 5 and 6). The pivot axis Y2.4 is here substantially at the altitude of the upper part 2.1 when the lifting unit 1 is in the service configuration with the foot of the boom 2 lowered.
    The upper part 2.1 is fixed to the pivot axis Y2.4 and the lower part 2.2 is fixed to the first cylinder part 8.1. The jack 8 can thus push the boom 2 along an axis of extension extending substantially in the extension of the lower chords 102.0 of the boom 102 when the lifting unit 1 is in the service configuration with the foot of the boom 2 lowered ( Figures 5 and 6). This extension axis corresponds here to the horizontal direction X shown in FIG.
    When the luffing jib crane 100 is in use, with the luffing unit 1 is in use, the jib foot 2 forms the proximal portion of the jib 102. For this purpose, the jib foot 2 includes the jib axis. pivoting Y2.4, around which the cylinder 8 raises or lowers the boom 102. The boom foot 2 is movable between a lowered position (Figures 5, 6, 8 and 9) and a raised position when the lifting unit 1 is in use. The pivot axis Y2.4 is mechanically connected to the securing part 6 not only in the service configuration but also in the transport configuration. The pivot axis Y2.4 is provided with articulation ball joints. The lifting unit 1 can be transported as a unitary block retaining all its interconnected components. The connecting elements of the jib foot 2, the counter-jib 4, the securing part 6 and the cylinder 8 can remain connected (mechanically, hydraulically and / or electrically) permanently.
    In addition, the lifting unit 1 here comprises a rotation device 16 which is configured to rotate the lifting unit 1 and the lifting boom 102 relative to the mast 104 and around the substantially vertical axis Z when the crane with luffing arrow 100 is in use. The rotation device 16 is usually called the orientation ring.
    As shown in FIGS. 8 and 9, when the fastening portion 6.1 is secured to the mast 104, the fastening portion 6 makes it possible to support the counter-jib 4 on one side and to support the jib 2, so the entire jib arrow 102, on the other side. When the lifting unit 1 is in the service configuration, the counter-jib 4 is arranged opposite the jib 2 relative to the mast 104. The lifting unit 1 further comprises a hoist winch for lift a load suspended at the arrow 102.
    Figure 9 illustrates an assembly method 200 according to the invention. The assembly method 200 comprises in particular the steps: 202) erect the mast 104, 203) fix on the mast 104 the rotation device 16, 204) assemble the other components of the lifting unit 1 on the rotation device 16 205) mechanically connect the arrow 102 to the foot of the arrow 2, and
    In addition, the assembly method 200 here comprises a step 206 consisting in balancing the luffing jib crane 100 by placing ballast 5 on the counter-jib 4.
    In addition, the assembly method 200 includes a step 207 of setting security. After this adjustment step 207, the jack 8 can push the jib foot 2, thus raising the jib 102.
    Of course, the present invention is not limited to the particular embodiments described in the present patent application, nor to embodiments within the scope of those skilled in the art. Other embodiments may be envisaged without departing from the scope of the invention, from any element equivalent to an element indicated in the present patent application.
    权利要求:
    Claims (16)
    [1" id="c-fr-0001]
    A lifting unit (1) for composing a luffing jib crane (100), the lifting unit (1) comprising at least one jib foot (2) for forming the proximal portion of an arrow ( 102) belonging to the luffing jib crane (100) when the luffing unit (1) is in the service configuration, a counter-jib (4) configured to support a ballast (5) for balancing the boom (102) , a securing part (6) arranged between the jib foot (2) and the counter-jib (4), the securing part (6) comprising a securing portion (6.1) configured to fasten the lifting unit ( 1) to a mast (104) of the luffing jib crane (100), and a cylinder (8) comprising a first cylinder part (8.1) and a second cylinder part (8.2), the first cylinder part (8.1) ) being mechanically connected to the jib foot (2) so that the jib foot (2) is movable at least between a lowered position and a raised position, the lifting unit (1) being configured to be placed at least: in a service configuration, in which the jack (8) can move the jib foot (2) between the lowered position and the position raised, and in a transport configuration, in which the jib foot (2) is in the lowered position, the lifting unit (1) being characterized in that the second jib portion (8.2) is mechanically connected to the jib portion (2). of solidarity (6).
    [2" id="c-fr-0002]
    2. lifting unit (1) according to the preceding claim, wherein the securing portion (6) further comprises a connecting portion (6.2) which is configured to mechanically connect the foot of arrow (2) to the against-arrow (4).
    [3" id="c-fr-0003]
    3. lifting unit (1) according to any one of the preceding claims, wherein the first cylinder part (8.1) and the second cylinder part (8.2) are each equipped with a hinge joint, and wherein the first cylinder part (8.1) and the second cylinder part (8.2) are mechanically connected respectively to the jib foot (2) and to the securing part (6) not only in the service configuration but also in the configuration of transport.
    [4" id="c-fr-0004]
    4. lifting unit (1) according to the preceding claim, wherein the cylinder (8) is located generally between a distal region of the foot of the boom (2) and the securing portion (6).
    [5" id="c-fr-0005]
    5. lifting unit (1) according to any one of the preceding claims, wherein the cylinder (8) is a linear cylinder configured to move from a retracted position, wherein the jib foot (2) is in the lowered position at an extended position, in which the jib foot (2) is in the raised position, the jack (8) in the retracted position extending in a cylinder direction (X8) which forms an angle (A8) of between -30 degrees and + 30 degrees with a horizontal direction (X) when the lifting unit (1) is in the transport configuration.
    [6" id="c-fr-0006]
    6. lifting unit (1) according to any one of the preceding claims, wherein the cylinder (8) is configured to be in the retracted position when the lifting unit (1) is in the transport configuration.
    [7" id="c-fr-0007]
    Lifting unit (1) according to any one of the preceding claims, wherein the jib foot (2) comprises an upper part (2.1) and a lower part (2.2), the upper part (2.1) being located at above the lower part (2.2) when the lifting unit (1) is in the service configuration with the jib foot (2) in the lowered position, the lifting unit (1) further comprising a pivot axis (Y2.4) arranged between the jib foot (2) and the counter-jib (4) so that the pivot axis (Y2.4) is located higher than the lower part (2.2) when the unit lifting gear (1) is in the service configuration with the boom foot (2) in the lowered position, the upper part (2.1) being fixed to the pivot axis (Y2.4) and the lower part (2.2) being fixed to the first cylinder part (8.1), so that the cylinder (8) can push the boom (2) along an axis extending substantially in the extension of the inferior frames arrow (2) when the lifting unit (1) is in the service configuration with the boom foot (2) down.
    [8" id="c-fr-0008]
    8. lifting unit (1) according to the preceding claim, wherein the pivot axis (Y2.4) is mechanically connected to the securing part (6) not only in the service configuration but also in the transport configuration .
    [9" id="c-fr-0009]
    9. lifting unit (1) according to any one of the preceding claims, further comprising a feeding device (10) configured to supply power to the jack (8) so as to raise the jib foot (2), the feed device (10) being attached to the counter-jib (4) so that the feed device (10) can be transported with the counter-jib (4) when the lifting unit (1) is in transport configuration.
    [10" id="c-fr-0010]
    10. Lift unit (1) according to the preceding claim, wherein the cylinder (8) is a hydraulic linear cylinder, and the feed device (10) is a hydraulic unit.
    [11" id="c-fr-0011]
    11. lifting unit (1) according to the preceding claim, further comprising: conduits (12) for conducting the liquid between the feeder (10) and the jack (8), and quick couplers (14) arranged between the jack (8) and the feeder (10), the quick couplers (14) being located closer to the feeder (10) than to the jack (8).
    [12" id="c-fr-0012]
    12. A lifting unit (1) according to any one of the preceding claims, having a maximum length (L1) less than 12 m, a maximum width (W1) less than 2.25 m and a maximum height (H1) less than 2.5 m.
    [13" id="c-fr-0013]
    13. lifting unit (1) according to any one of the preceding claims, wherein the securing portion (6) comprises ribs (6.0) assembled to form an indeformable assembly.
    [14" id="c-fr-0014]
    14. lifting unit (1) according to any preceding claim, wherein the against-arrow (4) and the securing portion (6) are mechanically connected by embedding.
    [15" id="c-fr-0015]
    A luffing jib crane (100) comprising: an arrow (102) configured to dispense a suspended load, a mast (104) configured to support the boom and the suspended load, and a lifting unit (1) according to one any of the preceding claims, the lifting unit (1) being mechanically connected to the mast (104) and secured to the boom (102).
    [16" id="c-fr-0016]
    16. A method of assembling (200) a luffing jib crane (100) according to the preceding claim, comprising the steps of: (202) raising the mast (104), (203) fixing on the mast (104) a device of rotation (16) belonging to the lifting unit (1), (204) assembling the lifting unit (1) on the rotation device (16), (205) mechanically connecting the boom (102) to the foot of arrow (2).
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    同族专利:
    公开号 | 公开日
    FR3046152B1|2017-12-29|
    US10752474B2|2020-08-25|
    ES2805650T3|2021-02-15|
    AU2016378835B2|2021-08-26|
    EP3393962A1|2018-10-31|
    CN108473289B|2020-03-03|
    CN108473289A|2018-08-31|
    EP3393962B1|2020-04-15|
    JP2018538218A|2018-12-27|
    KR20180097584A|2018-08-31|
    AU2016378835A1|2018-07-12|
    US20190010028A1|2019-01-10|
    WO2017109309A1|2017-06-29|
    IL259963D0|2018-07-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1374253A|1971-05-06|1974-11-20|Gen Crane Industries|Mobile tower cranes|
    DE3226211A1|1981-12-21|1983-07-14|Liebherr-Werk Biberach Gmbh, 7950 Biberach|Tower tip with counter-jib|
    FR2719300A1|1994-04-28|1995-11-03|Affuso D Anna|Simply assembled and dismantled crane for building works|
    CN202936122U|2012-12-10|2013-05-15|上海中联重科桩工机械有限公司|Variable amplitude fixed pulley mechanism and hoisting machinery|
    US4383616A|1980-12-24|1983-05-17|Kidde, Inc.|Luffing jib for construction crane|
    FR2788758B1|1999-01-27|2001-02-23|Potain Sa|METHOD AND DEVICE FOR MOUNTING THE MASTER HEAD OF TOWER CRANES|
    JP4564622B2|2000-03-27|2010-10-20|株式会社タダノ|Auxiliary jib storage device|
    WO2007012093A1|2005-07-29|2007-02-01|Franz Ehrenleitner|Parallel kinematic device|
    CN202657865U|2012-04-06|2013-01-09|武桥重工集团股份有限公司|Railway crane used for high speed railway and track traffic overline work|
    CN102826447B|2012-09-06|2015-02-18|三一重工股份有限公司|Truss jib crane as well as getting-off structure and position transferring method thereof|
    US9206021B2|2012-09-26|2015-12-08|Kobelco Cranes Co., Ltd.|Crane and crane assembling method|
    JP6348453B2|2015-05-27|2018-06-27|住友重機械建機クレーン株式会社|crane|
    FR3046149B1|2015-12-23|2017-12-29|Manitowoc Crane Group France|AUTOMATICALLY FOLDING AND FOLDING CRANE COMPRISING A MAT AND ARROW DECALED FROM MATERIAL|FR3072085B1|2017-10-09|2019-11-08|Manitowoc Crane Group France|CRANE WITH ADJUSTABLE ARROW WITH LOCKING DEVICE OF THE ARROW IN CONFIGURATION RECEIVED|
    FR3072084B1|2017-10-09|2019-09-27|Manitowoc Crane Group France|CRANE WITH ADJUSTABLE ARROW WITH LOCKING DEVICE OF THE ARROW IN CONFIGURATION RECEIVED|
    JP6919858B2|2018-03-16|2021-08-18|株式会社三井Ｅ＆Ｓマシナリー|Trolley and trolley transportation method|
    JP2019156626A|2018-03-16|2019-09-19|株式会社三井Ｅ＆Ｓマシナリー|Trolley|
    法律状态:
    2016-11-24| PLFP| Fee payment|Year of fee payment: 2 |
    2017-06-30| PLSC| Publication of the preliminary search report|Effective date: 20170630 |
    2017-12-21| PLFP| Fee payment|Year of fee payment: 3 |
    2019-12-19| PLFP| Fee payment|Year of fee payment: 5 |
    2020-12-23| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1563218A|FR3046152B1|2015-12-23|2015-12-23|LIFTING UNIT, RECEIVABLE CRANE CRANE COMPRISING SUCH A LIFTING UNIT AND METHOD FOR ASSEMBLING SUCH CRANE|FR1563218A| FR3046152B1|2015-12-23|2015-12-23|LIFTING UNIT, RECEIVABLE CRANE CRANE COMPRISING SUCH A LIFTING UNIT AND METHOD FOR ASSEMBLING SUCH CRANE|
    CN201680076086.3A| CN108473289B|2015-12-23|2016-11-17|Lifting unit, luffing jib crane and method for assembling such a crane|
    KR1020187017832A| KR20180097584A|2015-12-23|2016-11-17|A lifting unit, an elevating and lowering jib crane including such a lifting unit, and a method for assembling such a crane|
    EP16812997.1A| EP3393962B1|2015-12-23|2016-11-17|Hebeeinheit und kran mit einem anhebbarem ausleger mit einer solchen hebeeinheit|
    US16/065,322| US10752474B2|2015-12-23|2016-11-17|Lifting unit, luffing jib crane comprising such a lifting unit and method for assembling such a crane|
    PCT/FR2016/052994| WO2017109309A1|2015-12-23|2016-11-17|Raising unit, crane with raisable jib comprising such a raising unit, and method for assembling such a crane|
    JP2018533088A| JP2018538218A|2015-12-23|2016-11-17|Lifting unit, luffing jib crane equipped with such a lifting unit, and method for assembling such a crane|
    ES16812997T| ES2805650T3|2015-12-23|2016-11-17|Lifting unit and lifting jib crane comprising such a lifting unit|
    AU2016378835A| AU2016378835B2|2015-12-23|2016-11-17|Raising unit, crane with raisable jib comprising such a raising unit, and method for assembling such a crane|
    IL259963A| IL259963D0|2015-12-23|2018-06-12|Lifting unit, luffing jib crane comprising such a lifting unit and method for assembling such a crane|
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