Assembly device for a balance beam

Abstract

Assembly device (10) for assembling a pendulum (40) to a pylon head (30) of a pylon of a cable vehicle transport installation, the assembly device (10) comprising: - a first coupling part provided on the pendulum (40) and a second coupling part provided on a gantry (31) of the pylon head (30) and configured to couple with the first coupling part in a coupling direction which is substantially vertical in the condition of use of the assembly device;- a first guide part provided on the boom (40) and a second guide part provided on the pylon head (30), the first guide part being configured to cooperate with the second guide part so as to guide the boom (40) in translation along the coupling direction and to allow the coupling of the first coupling part and the second coupling part during a boom (40) lifting operation; and - a locking mechanism configured to lock the coupling of the first coupling part and the second coupling part. Figure 5b;

Description

Title of the invention: Device for assembling a balance beam technical field

[0001] The present invention belongs to the field of cable vehicle transport installations, and in particular to that of ski lifts equipping, for example, winter sports resorts, and relates more particularly to an assembly device for assembling a pendulum to a pylon head. State of the art

[0002] In a cable car-type vehicle transport installation, seats or cabins are attached to an overhead cable, such as a haul rope, by attachment clips which may be fixed or detachable.

[0003] In order to enable the transport of users of the installation between a boarding station and a disembarking station, the overhead cable pulls the seats or cabins while being guided by a plurality of guide rollers mounted in rotation on pendulums, which are mounted mobilarily or fixedly on pylons suitably distributed along the route separating the boarding station from the disembarking station.

[0004] A balance wheel comprises at least one metal beam on which are mounted at least two guide rollers rotating around an axis perpendicular to a main axis of extension of the metal beam.

[0005] Often, a balance wheel comprises a plurality of metal beams, each supporting two guide rollers and being articulated to each other around axes parallel to the axes of rotation of the guide rollers.

[0006] Each pylon of the installation includes a pylon head on which is provided at least one support element or load-bearing structure, also called a bracket, arranged to support at least one pendulum, and often two pendulums.

[0007] Assembling a pendulum on a pylon support and disassembling it are delicate and costly operations, due in particular to the weight and complex structure of the pendulum.

[0008] These operations generally require the use of a helicopter for on-site transport and the implementation of an initial positioning of the pendulum on or near the pylon support.

[0009] These operations also require the presence, on a platform of the pylon head, of a large number of maintenance operators whose role is to position the pendulum more precisely and then to fix it to the gantry.

[0010] During the maintenance work, the helicopter pilot must constantly hold the outrigger in position until it is fixed in a stable and secure manner to the gantry. The helicopter intervention is therefore time-consuming and complex, which makes the cost of assembling the counterweight significant without obviously reducing the risk of incidents or accidents.

[0011] In addition, the terrain configuration, generally sloping and / or difficult to access, makes assembly and disassembly operations all the more difficult.

[0012] These operations are nevertheless essential, and it is necessary to carry them out regularly to ensure the safety and proper functioning of the entire installation at all times.

[0013] Indeed, balance wheels are complex and important components that must be regularly inspected to monitor their condition or address any malfunctions. In particular, it may be necessary to disassemble a balance wheel to precisely inspect any worn parts that need replacing, including the bearing pivots and the various locking and fastening elements.

[0014] However, dismantling a balance wheel is a lengthy and delicate operation that is best carried out in a workshop, which therefore requires the balance wheel to be removed from the stand beforehand, as well as its subsequent assembly or even its replacement. Summary of the invention

[0015] This application aims to remedy all or some of the aforementioned drawbacks, and in particular to reduce the costs and risks associated with the installation, troubleshooting, and maintenance of cableway sheaves. Specifically, there is a need to make the installation and / or removal of a sheave faster, safer, and less expensive.

[0016] To this end, the present invention relates to an assembly device for assembling a pendulum to a pylon head of a pylon of a cable car transport installation, the assembly device comprising:

[0017] - a first coupling part provided on the rocker arm and a second coupling part provided on a pylon head bracket and configured to couple with the first coupling part in a coupling direction which is substantially vertical in the operating condition of the assembly device;

[0018] - a first guiding part provided on the balance wheel and a second part of guidance provided on the pylon head, the first guide section being configured to cooperate with the second guide section so as to guide the boom in translation along the coupling direction and to allow the coupling of the first and second coupling sections during a boom lifting operation; and

[0019] - a locking mechanism configured to block the coupling of the first coupling part and the second coupling part.

[0020] A cable vehicle transport installation, and in particular a cable car, chairlift or ski lift installation, generally comprises a plurality of pylons distributed between a boarding station and a disembarking station for users.

[0021] Each pylon comprises a pylon head connected to the ground by a pylon column extending in a substantially vertical direction.

[0022] The pylon head further includes a bracket capable of supporting at least one pendulum, and generally two pendulums.

[0023] Each rocker arm comprises a plurality of rotating rollers, generally assembled in pairs, and therefore in particular two, four, six, eight or ten rotating rollers whose function is to guide in translation the cable of the installation, which allows the movement of users installed for example in cabins or on the sets of seats of the ski lift installation.

[0024] At each of the pylons, it is important that the weight of a cabin and / or a set of seats transporting users is at all times fairly distributed between each of the rotating rollers of each pendulum.

[0025] In other words, each pendulum is mounted on a pylon head bracket in such a way that each of its rotating rollers supports at all times a load equivalent to the others. Indeed, an uneven distribution of the load between the rotating rollers could lead to rapid and abnormal wear of the installation, or even cause accidents.

[0026] It is therefore important to ensure correct mounting of each rocker arm on its corresponding support.

[0027] Advantageously, the first coupling part cooperates with the second coupling part in order to allow correct coupling of the rocker arm and the pylon head support.

[0028] Advantageously, the first guide part and the second guide part make the coupling of the pendulum to the pylon head support easier and faster by allowing the pendulum to be guided upwards until it is coupled to the support.

[0029] During this assembly, the pendulum is in fact supported by a helicopter, and only two maintenance operators located on a platform of the pylon head are needed to finely position the pendulum to allow its lifting then its coupling and its mounting to the pylon head.

[0030] Thanks to the provisions of the invention, only two operators are required, who are responsible for positioning the pendulum so that the first The first guidance part cooperates with the second guidance part, such cooperation then allowing the pendulum to be guided during its elevation by the helicopter to allow a quick and easy coupling of the first coupling part and the second coupling part.

[0031] According to one possibility, the first guide part is configured to be removably mounted on the pendulum. According to this possibility, the first guide part can be removed from the pendulum, for example, once the pendulum is fixed to the pylon head support.

[0032] According to one embodiment, the second coupling part includes a first boom opening, the first coupling part including a coupling member intended to pass through the first boom opening.

[0033] According to one possibility, the first opening of the boom is provided on a lower wall of the boom. Advantageously, said lower wall extends in a substantially horizontal plane, that is to say, a plane orthogonal to the direction in which the rocker arm is guided in translation.

[0034] According to one possibility, the balance wheel comprises a balance beam, and the coupling member is fixed to the balance beam, and for example to an upper face of the balance beam. Advantageously, the coupling member is configured to extend in an extension plane substantially orthogonal to the upper face of the balance beam.

[0035] According to one embodiment, the coupling member includes a passage opening, the locking mechanism includes a locking member intended to pass through said passage opening.

[0036] According to one possibility, the locking member comprises a locking rod.

[0037] According to one possibility, the coupling organ comprises a hoop having a opening suitable for the locking rod to pass through.

[0038] According to one embodiment, the pylon head bracket includes a second bracket opening, the locking member being intended to pass through said second bracket opening.

[0039] Advantageously, the second opening of the gallows is provided on a side wall of the gallows.

[0040] Advantageously, the coupling lock is reversible, and therefore temporary; that is, the locking element can be removed, for example, once the rocker arm is fixed to the boom, since once this fixing is complete, the locking element becomes unnecessary. It is indeed easy to remove the locking element.

[0041] According to one embodiment, the pylon head bracket has a third bracket opening located opposite the second bracket opening, the locking member being intended to pass through said third bracket opening.

[0042] According to one embodiment, the first guide part comprises a first balance plate and a second balance plate, the second guide part comprising a first rod and a second rod substantially parallel to each other and configured to cooperate respectively with the first balance plate and the second balance plate so as to allow the translational guidance of the balance.

[0043] Advantageously, the first balance plate is configured to be removably fixed to the balance wheel, and for example removably fixed to the balance beam.

[0044] Similarly, the second balance plate is configured to be removably attached to the balance wheel, and for example removably attached to the balance beam.

[0045] Thus, the said first and second balance plates can optionally be removed once the balance wheel has been coupled to the gantry.

[0046] According to one possibility, the first balance plate and / or the second balance plate has a substantially rectangular shape.

[0047] According to one possibility, at least one of said first rod and the second rod has a circular section.

[0048] According to one embodiment, the first balance plate is intended to come against the first rod, and in which the second balance plate is intended to come against the second rod.

[0049] Thus, the respective cooperations of the first balance plate with the first rod and of the second balance plate with the second rod allow the balance wheel to be guided in translation upwards in order to allow the coupling of the first coupling part provided on the balance wheel and the second coupling part provided on the arm.

[0050] Furthermore, these provisions improve the safety of the two maintenance operators working on the pylon head during the assembly of the pendulum on the pylon head. Indeed, the first and second rods allow the pendulum to be locked in place and prevent it from striking either of the operators.

[0051] According to one possibility, at least one of said first balance plate and second balance plate has a side of shape complementary to at least one of said first and second rod.

[0052] According to one possibility, the first plate has a rounded and concave side, which is intended to come into contact with the first rod.

[0053] According to one possibility, the side of the second plate intended to come into contact with the second rod is straight.

[0054] According to these provisions, correct positioning and orientation of the pendulum relative to the pylon head support are facilitated.

[0055] According to one possibility, the assembly device includes a main frame on which the second guiding part is provided.

[0056] According to this possibility, the main frame of the assembly device includes a main frame beam, for example of rectangular section, on which said first and second rods are fixed.

[0057] According to one possibility, the main frame beam includes a beam opening, and the locking member is configured to pass through said beam opening.

[0058] According to this option, the main frame is configured to be removably mounted on the pylon head, and for example, removably attached to the pylon head's support arm. This option allows the main frame to be removed from the pylon head, for example, when the pendulum is attached to the pylon head's support arm.

[0059] The assembly device may, for example, include a frame fixing mechanism configured to allow the main frame beam to be fixed to the pylon head support, and thus the main frame to be mounted to the pylon head and to allow its subsequent dismantling.

[0060] According to one possibility, the frame fixing mechanism includes a fixing plate attached to the main frame beam.

[0061] According to one possibility, the fixing plate has a main frame fixing plate opening, and the locking member is configured to pass through said plate opening.

[0062] According to one embodiment, the assembly device further includes an alignment mechanism configured to align the pendulum with respect to the pylon head support.

[0063] According to one possibility, the alignment mechanism includes an alignment element configured to be fixed to the balance wheel.

[0064] According to one embodiment, the assembly device further includes a pendulum fixing mechanism configured to fix the pendulum to the pylon head support.

[0065] According to one possibility, said locking mechanism operates independently of the balance wheel fixing mechanism.

[0066] Advantageously, the locking mechanism, by being separate from the pendulum fixing mechanism, allows the two maintenance operators present on the pylon head platform to simply and quickly lock the coupling of the first coupling part and the second coupling part.

[0067] In this way, once the coupling is blocked by the locking mechanism, the first coupling part can no longer be uncoupled from the second coupling part, even if the helicopter releases the pendulum.

[0068] Next, the pendulum can be fixed to the gantry by means of the pendulum fixing mechanism, without further intervention from the helicopter.

[0069] Thanks to these provisions, the helicopter intervention time is reduced, since it is no longer necessary for the helicopter to support the pendulum until the latter is actually fixed to the pylon head by the two maintenance operators.

[0070] According to one possibility, the pendulum has at least four, and preferably eight threaded pendulum mounting holes, and the pylon head bracket has at least four, and preferably eight threaded and through bracket mounting holes.

[0071] Once the first coupling part, provided on the rocker arm, is coupled to the second coupling part provided on the pylon head support, the alignment mechanism makes it possible to achieve perfect alignment of each of the support fixing holes with respect to the corresponding rocker arm fixing hole.

[0072] The pendulum fixing mechanism comprises at least four, and for example eight screws, each intended to be screwed into one of the gantry fixing holes and into one of the pendulum fixing holes in order to secure the pendulum to the pylon head gantry. Brief description of the figures

[0073] Figures [Fig.la] and [Fig.lb] are a perspective view of different elements constituents of an assembly device conforming to an embodiment of the invention.

[0074] Figures [Fig.2a] to [Fig.2h] represent a pylon head on which is mounted part of the assembly device of [Fig.la].

[0075] Figures [Fig.3a] and [Fig.3b] represent a six-roller rotating balance on which are mounted and / or provided some of the constituent elements of the assembly device of the [Fig.la].

[0076] Figures [Fig.4a] to [Fig.4d] represent the pendulum of [Fig.3a] in the approach phase to the pylon head of [Fig.2a].

[0077] Figures [Fig.5a] to [Fig.5d] represent the pendulum in the lifting phase vis-à-vis of the pylon head of [Fig.2a].

[0078] Figures [Fig. 6a] to [Fig. 6c] represent the pendulum and the pylon head in phase mating.

[0079] Figures [Fig.7a] and [Fig.7b] represent the locking phase of the coupling of the rocker arm and the pylon head.

[0080] Figures [Fig.8a] and [Fig.8b] represent the alignment and fixing phase of the pendulum and the pylon head. Detailed description

[0081] Figures 1a to 8b represent an assembly device 10 for assembling a pendulum 40 (shown more particularly in [Fig.3a]) to a pylon head 30 (shown more particularly in [Fig.2d]) of a pylon of a cable vehicle transport installation, for example a pylon of a cable car or chairlift type lift installation.

[0082] The pylon head 30 more particularly includes a gantry 31 intended to support the pendulum 40 which includes for example six guide bearings 42 to guide the cable of the installation, and an additional pendulum 41 which includes for example four guide bearings 42.

[0083] The pylon head 30 also includes a platform 32 extending in a substantially horizontal plane, and therefore substantially orthogonal to the direction of extension of the pylon column, to allow safe movement of at least one maintenance operator from one end to the other of the pylon head 30.

[0084] In particular, [Fig.la] provides a perspective view of some of the constituent elements of the assembly device 10 according to an embodiment of the invention.

[0085] The assembly device 10 comprises a main frame 11, which includes a first rod 12 and a second rod 13, for example with a circular cross-section, parallel to each other. The main frame 11 also includes a main frame beam 14, for example with a rectangular cross-section, to which each of said first rod 12 and second rod 13 are fixed at one end.

[0086] More specifically, a first end of the first rod 12 is fixed to the main frame beam 14 at the level of a first end of the main frame beam 14, while a first end of the second rod 13 is fixed to the main frame beam 14 at the level of a second end of the main frame beam 14.

[0087] According to the embodiment shown in [Fig. 1a], the first rod 12 comprises a first rod portion extending from the first end of the beam 14 perpendicularly to a principal extension direction of the main frame beam 14, a second rod portion extending parallel to the first rod portion and offset transversely from the first rod portion, and an intermediate connecting portion located between the first and second rod portions and inclined relative to them. However, according to an alternative embodiment of the invention, the first rod 12 could be straight.

[0088] Similarly, the second rod 13 comprises a first rod portion extending from the second end of the main frame beam 14 perpendicularly to the principal direction of extension of the main frame beam 14, a second rod portion extending parallel to the first rod portion and offset transversely from the first rod portion, and an intermediate connecting portion situated between the respective first and second rod portions and inclined relative to them. However, according to an alternative embodiment of the invention, the second rod 13 could be straight.

[0089] As shown in Figures 2a to 2g, the main frame 11 of the assembly device 10 is intended to be fixed to the pylon head 30. To do this, the assembly device 10 includes a frame fixing mechanism configured to allow the mounting and fixing of the main frame 11 to the support 31 of the pylon head 30.

[0090] As can be seen in Figures 1b and 2b, the frame fixing mechanism includes in particular a fixing plate 15 fixed to the main frame beam 14, and two nuts 23 intended to secure the fixing of the main frame beam 14 to the post 31, and thus the mounting of the main frame 11 on the pylon head 30.

[0091] Advantageously, the main frame beam 14 is fixed, by means of the two nuts 23, at the level of a first end of the support 31, while at the level of the second end of the support 31 is fixed the rocker arm 41 comprising four guide bearings 42.

[0092] Once the main frame 11 is thus mounted on the pylon head 30, the main frame beam 14 extends in a substantially horizontal direction, while the first and second rods 12, 13 each extend in a substantially vertical plane. In particular, the first rod portion of each of the first and second rods 12, 13 extends in a substantially vertical direction.

[0093] The assembly device 10 also includes a first balance plate 16 and a second balance plate 17 of substantially rectangular shape and intended to be mounted on the balance wheel 40, and in particular fixed on a balance beam 43, as shown in figures 3a and 3b.

[0094] Specifically, the first balance plate 16 is fixed to the balance beam 43 by means of fixing screws, for example four in number, and the second balance plate 17 is fixed to the balance beam 43 by means of fixing screws 27, for example four in number.

[0095] Once fixed, the first balance plate 16 and the second balance plate 17 extend in a plane substantially parallel to the plane of extension of an upper surface 44 of the balance beam 43. Advantageously, the first balance plate 16 and the second balance plate 17 each protrude from the side wall of the pendulum beam 43 which is intended to be oriented towards the pylon head 30.

[0096] The assembly device 10 further includes a coupling member 18, in the form of an arch, provided on the rocker arm 40 and more particularly on the upper surface 44 of the rocker arm beam 43. In this way, the coupling member 18 forms a first coupling part provided on the rocker arm 40 and intended to couple with a second coupling part (visible on [Fig.2h]) provided on the gantry 31 of the pylon head 30.

[0097] In particular, the second coupling part includes a first gallows opening 34 provided on a lower wall of the gallows 31 and through which at least a part of the coupling member 18 is intended to extend.

[0098] The first coupling part provided on the rocker arm 40 and the second coupling part provided on the gantry 31 are configured to cooperate with each other in order to allow the coupling of the rocker arm 40 and the gantry 31 of the pylon head 30.

[0099] The mounting and fixing of the rocker arm 40 on the support 31 will now be described in relation to [Fig.4a] and following.

[0100] In figures 4a to 4d, the pendulum 40 is shown in the approach phase to the pylon head 30. This approach phase is carried out by means of a helicopter (not shown in the figures), which supports and moves the pendulum 40 so as to bring it close to the pylon head 30.

[0101] The approach phase ends when the first balance plate 16 and the second balance plate 17 are respectively in contact with the first rod 12 and the second rod 13, as shown in Figures 5c to 5e. In this position, the coupling member 18 provided on the balance wheel 40 is located below the first arm opening 34 (see [Fig. 5c]).

[0102] In practice, a first maintenance operator working on the platform 32 of the pylon head 30 helps to bring the first rocker plate 16 into contact with the first rod 12 ([Fig.5d]), while a second maintenance operator helps to bring the second rocker plate 17 into contact with the second rod 13 ([Fig.5d]).

[0103] Advantageously, the first balance plate 16 comprises a side having a concave curvature complementary to the circular section of the first rod 12, said side conforming to the first rod 12 at the moment of contact. This arrangement ensures correct lateral positioning of the balance 40 relative to the support 31 of the pylon head 30.

[0104] In addition, the side of the second balance plate 17 coming into contact with the second rod 13 is straight, which makes it possible to ensure correct angular positioning of the balance wheel 40.

[0105] Thus, the cooperation of the first balance plate 16 and the second balance plate 17 with respectively the first rod 12 and the second rod 13 makes it possible to ensure correct positioning and orientation, in other words correct centering, of the balance 40 with respect to the pylon head 30. In addition, these elements make it possible to block the movement of the balance 40 and thus prevent it from hitting one of the two maintenance operators working on the platform 32 of the pylon head 30.

[0106] The lifting phase of the boom 40 relative to the pylon head 30, carried out by means of the helicopter, can then take place. During the lifting phase, the first maintenance operator keeps the first boom plate 16 in contact with the first rod 12 while the second maintenance operator keeps the second boom plate 17 in contact with the second rod 13. At the same time, the helicopter gradually raises the boom 40 so that the coupling member 18 approaches and then passes through the first opening in the gantry 34 provided on the lower wall of the gantry 31.

[0107] During the elevation, the first balance plate 16 and the second balance plate 17, in conjunction with the first rod 12 and the second rod 13, function to guide the balance wheel 40 in its upward vertical translation. Thus, the first rod 12 forms a slide for the first balance plate 16, while the second rod 13 forms a slide for the second balance plate 17.

[0108] Thus, the first balance plate 16 and the second balance plate 17 form a first guide part provided on the balance wheel 40 and intended to cooperate with a second guide part provided on the pylon head 30 and formed by the first rod 12 and the second rod 13.

[0109] By cooperating with each other, the first guide part and the second guide part allow the rocker 40 to be guided in translation along a substantially vertical coupling direction in order to allow the coupling of the first coupling part provided on the rocker 40 and formed by the coupling member 18 and the second coupling part provided on the arm 31 and formed by the first arm opening 34, as can be seen in figures 6b and 6c.

[0110] Once the first coupling part and the second coupling part are coupled, a locking member 19, specifically a locking rod, allows said coupling to be locked by passing through the coupling member 18.

[0111] As can be seen in [Fig.7b], the locking member 19 is configured to pass successively through a beam opening 21 provided on the main frame beam 14 (which opening is visible in [Fig.2c]), through a plate opening 24 provided on the fixing plate 15, through a second gallows opening 35 provided on a first side wall of the gallows 31, and through a third gallows opening 36 provided on a second side wall of the gallows 31 and located opposite the second gallows opening 35.

[0112] Thus, one of the two maintenance operators can quickly block the coupling of the first coupling part and the second coupling part by means of the locking member 19. Once the coupling is blocked, the helicopter can then release the outrigger 40 without risk, since the coupling of the latter to the boom 31 is now blocked by the locking member 19. Thus, the intervention of the helicopter is shortened, and the two maintenance operators can proceed, in the absence of the helicopter which has left for another mission, to the alignment and then the fixing of the outrigger 40 on the boom 31, as shown in figures 8a and 8b.

[0113] The alignment of the balance wheel 40 with respect to the support 31 is achieved by means of an alignment mechanism comprising an alignment element 20, specifically an alignment plate, as well as a first pair of screws 28, and a second pair of screws 29.

[0114] As can be seen in [Fig.7b], the balance wheel 40 includes two threaded alignment holes 46, each intended to receive one of the screws 28 of the first pair of screws of the alignment mechanism, as can be seen in [Fig.8b]. The two screws 29 of the second pair of screws of the alignment mechanism allow, by means of a fine adjustment, the alignment of the balance wheel 40 with respect to the arm 31. In particular, the two screws 29 are configured to bear against a lateral face of the arm 31, and allow the arm 31 to be moved relative to the balance wheel by tightening or loosening the two screws 29. Thus, this adjustment makes it possible to align and match the arm mounting holes 37, for example eight in number, threaded and through-holes provided on the lower wall of the arm 31 with the balance wheel mounting holes 45 (visible in [Fig. 6c]), for example eight in number, provided on the balance wheel 40.

[0115] Once the alignment has been carried out, the balance wheel 40 is fixed to the support 31 by means of a balance wheel fixing mechanism comprising two identical fixing elements 22, which have the function of fixing the balance wheel 40 to the support 31 by means of screws 25, for example four in number.

[0116] As shown in [Fig.8b], each of the screws 25 is intended to be screwed into one of the mounting holes for the support 37 and into one of the corresponding mounting holes for the rocker arm 45.

[0117] Once the rocker arm 40 is fixed on the gantry 31 and before the ski lift installation is put into operation, it is necessary to remove the locking device 19.

[0118] It is also necessary to dismantle the main frame 11 from the pylon head 30 by unscrewing the two nuts 23 fixing the main frame beam 14 to the support 31. Once these two nuts 23 have been unscrewed, it is indeed possible to remove the main frame 11 from the pylon head 30.

[0119] Finally, it is also possible to remove the first balance plate 16 and the second balance plate 17 from the balance 40 by unscrewing the fixing screws 26 and the fixing screws 27 respectively.

Claims

Demands

1. Assembly device (10) for assembling a pendulum (40) to a pylon head (30) of a pylon of a cable vehicle transport installation, the assembly device (10) comprising: • a first coupling part provided on the pendulum (40) and a second coupling part provided on a gantry (31) of the pylon head (30) and configured to couple with the first coupling part in a coupling direction which is substantially vertical in the operating condition of the assembly device;• a first guide part provided on the boom (40) and a second guide part provided on the pylon head (30), the first guide part being configured to cooperate with the second guide part so as to guide the boom (40) in translation along the coupling direction and to allow the coupling of the first coupling part and the second coupling part during a boom (40) lifting operation; and • a locking mechanism configured to lock the coupling of the first coupling part and the second coupling part.

2. Assembly device (10) according to claim 1, wherein the second coupling part includes a first gallows opening (34), the first coupling part including a coupling member (18) intended to pass through the first gallows opening (34).

3. Assembly device (10) according to claim 2, wherein the coupling member (18) includes a passage opening, the locking mechanism includes a locking member (19) intended to pass through said passage opening.

4. Assembly device (10) according to claim 3, wherein the pylon head (30) bracket (31) comprises a second bracket opening (35), the locking member (19) being intended to pass through said second bracket opening (35).

5. Assembly device (10) according to claim 4, wherein the gantry (31) of the pylon head (30) has a third gallows opening (36) located opposite the second gallows opening (35), the locking member (19) being intended to pass through said third gallows opening (36).

6. Assembly device (10) according to any one of the preceding claims, wherein the first guide part comprises a first balance plate (16) and a second balance plate (17), the second guide part comprising a first rod (12) and a second rod (13) substantially parallel to each other and configured to cooperate respectively with the first balance plate (16) and the second balance plate (17) so as to permit the translational guidance of the balance (40).

7. Assembly device (10) according to claim 6, wherein the first balance plate (16) is intended to come against the first rod (12), and wherein the second balance plate (17) is intended to come against the second rod (13).

8. Assembly device (10) according to any one of the preceding claims, further comprising an alignment mechanism configured to align the pendulum (40) with respect to the pylon head (31) of the pylon head (30).

9. Assembly device (10) according to any one of the preceding claims, further comprising a pendulum fixing mechanism configured to fix the pendulum (40) to the gantry (31) of the pylon head (30).

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