Gearbox turnover device

Abstract

The application discloses a gear box overturning device, which comprises a hoisting assembly, an inner hole for placing and fixing a support part, and a first lifting lug arranged on the hoisting assembly; an eccentric part, a connecting part and an eccentric part, the connecting part is connected with the hoisting assembly, and the eccentric part is offset from the middle part of the connecting part; a support assembly, a groove for placing the eccentric part is arranged on the support assembly, and the eccentric part can rotate in the groove; two hoisting assemblies are oppositely arranged on the support assembly and used for fixing the support parts on two sides of the gear box respectively, and in the mounting state, the two eccentric parts are transversely offset from the middle part of the gear box. The gear box overturning device can offset the gravity center position of the gear box from the axis direction, and under the action of the gravity of the gear box, the gear box can be quickly overturned without manual operation, and the overturning is safe and reliable, and the overturning efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gearboxes, and more particularly to a gearbox turnover device. BACKGROUND

[0002] With the development of wind turbines, the power of gearboxes is getting larger and larger, and the weight of the gearboxes is also getting heavier. After the gearbox is assembled in the vertical direction, the gearbox body needs to be turned over for use in the turbine. Due to the heavy weight of the gearbox body, the gearbox body is not easy to turn over and needs to be lifted by a lifting machine.

[0003] In the prior art, the gearbox is turned over by a crane with main and auxiliary hooks. The lifting and lowering of the main and auxiliary hooks need to be coordinated with each other during the turning over. This turning over method is slow when turning over a large-power gearbox, and requires a high level of operation. Improper operation can easily cause danger, and the safety and turning over efficiency cannot be guaranteed.

[0004] In view of the above, how to improve the turning over efficiency of the gearbox is a problem that needs to be solved by the technical personnel in the field at present. SUMMARY

[0005] Therefore, the purpose of the present application is to provide a gearbox turnover device which can offset the center of gravity of the gearbox from the axis direction, and make the gearbox turn over quickly under the action of gravity without manual operation, so as to improve the turning over efficiency and safety.

[0006] In order to achieve the above purpose, the present application provides the following technical scheme:

[0007] A gearbox turnover device for lifting a gearbox with support parts on both sides, comprising:

[0008] A lifting assembly having an inner hole for placing and fixing the support parts, the lifting assembly being provided with a first lifting lug;

[0009] An eccentric part having a connecting part and an eccentric part, the connecting part being connected to the lifting assembly;

[0010] A support assembly provided with a groove for placing the eccentric part, the eccentric part being rotatable in the groove; two lifting assemblies opposite to each other are arranged on the support assembly for fixing the support parts on both sides of the gearbox respectively, and in the installed state, the two eccentric parts are transversely offset from the middle part of the gearbox.

[0011] Preferably, the lifting assembly is provided with a second lifting lug symmetrically on both sides.

[0012] Preferably, a ratchet wheel is connected to the eccentric part, the ratchet wheel protruding from the end face of the eccentric part, and the support assembly is provided with a ratchet locking member cooperating with the ratchet wheel to limit the rotation direction of the eccentric part.

[0013] Preferably, the support assembly comprises a support base provided with the groove, and the support base is connected with a fixing block and a ratchet locking member in sequence on one side.

[0014] Preferably, one end of the ratchet locking member is hinged to the fixing block, and the other end of the ratchet locking member is capable of being clamped with any tooth of the ratchet wheel.

[0015] Preferably, the support assembly further comprises a bracket and a base, the bracket is arranged at the bottom of the support base, and the bottom of the bracket is connected through the base.

[0016] Preferably, a height adjusting member is connected between the bracket and the support base, which is capable of adjusting the height of the support base relative to the base.

[0017] Preferably, a span adjusting member is arranged between the two bases, both ends of the span adjusting member are connected with the bases, and the span adjusting member is capable of adjusting the span between the two brackets.

[0018] Preferably, an adjusting member is connected to the top of the hoisting assembly, and the adjusting member has a through hole communicating with the inner hole.

[0019] Preferably, when the support part is a support arm, the support arm is fixed to the hoisting assembly in cooperation with the inner hole.

[0020] Or, when the support part is an elastic pin, the elastic pin is fixed to the hoisting assembly in cooperation with the inner hole and the through hole in sequence.

[0021] The gear box overturning device provided by the application comprises a hoisting assembly, both sides of the gear box are provided with support portions, the hoisting assembly is provided with an inner hole capable of placing and fixing the support portions, and the support portions of the gear box and the hoisting assembly are fixedly connected; a first lifting lug is arranged on the hoisting assembly, and the gear box fixed to the hoisting assembly can be hoisted by a lifting appliance; the device further comprises an eccentric member, the eccentric member is provided with a connecting portion and an eccentric portion, and the connecting portion is fixedly connected with the hoisting assembly, that is, the gear box, the hoisting assembly and the eccentric member are fixedly connected to form an integral component; the eccentric portion is offset from the central position of the connecting portion, that is, the eccentric portion is offset from the gravity center position; a groove capable of placing the eccentric portion is arranged on the support assembly, and the eccentric portion can rotate in the groove; when the gear box, the hoisting assembly and the eccentric member are fixedly connected and hoisted to the groove position, the gravity center position of the gear box is offset to the corresponding support position of the eccentric member and the groove; due to the offset of the gravity center position, the integral component rotates around the position connected with the eccentric member and the groove; with the slow descent of the lifting appliance of the travelling crane, the axis of the gear box is gradually rotated to the horizontal direction, and the overturning operation is completed at this time. The gear box overturning device can offset the gravity center position of the gear box from the axis direction, and the gear box is rapidly overturned under the action of gravity, without manual operation, and the overturning is safe and reliable. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of the provided drawings.

[0023] Figure 1 The structural schematic diagram of the gear box overturning device provided by the present application is shown in the figure.

[0024] Figure 2 The installation schematic diagram of the support assembly, the eccentric member and the hoisting assembly provided by the present application is shown in the figure.

[0025] Figure 3 The structural schematic diagram of the hoisting assembly provided by the present application is shown in the figure.

[0026] Figure 4 The structural schematic diagram of the eccentric member provided by the present application is shown in the figure.

[0027] Figure 5 The installation schematic diagram of the hoisting assembly and the eccentric member provided by the present application is shown in the figure.

[0028] Figure 6 The structural schematic diagram of the support base provided by the present application is shown in the figure.

[0029] Figures 1-6 In the figure, the reference signs include:

[0030] Gearbox 1, adjusting part 2, hoisting assembly 3, eccentric part 4, support 5, base 6, span adjusting part 7, height adjusting part 8, support base 9, fixing block 10, ratchet 11, ratchet locking part 12;

[0031] Through hole 21, first lifting lug 31, second lifting lug 32, inner hole 33, connecting part 41, eccentric part 42, groove 91. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] The core of the present application is to provide a gearbox turnover device, which can offset the gravity center position of the gearbox from the axis direction, and realize rapid turnover under the action of gravity and cooperation with a travelling crane.

[0034] The gearbox turnover device provided by the present application is used for hoisting a gearbox with support parts on both sides, and comprises a hoisting assembly 3, an eccentric part 4 and a support assembly.

[0035] The hoisting assembly 3 has an inner hole 33 for placing and fixing the support parts, and the hoisting assembly 3 is provided with a first lifting lug 31; the eccentric part 4 has a connecting part 41 and an eccentric part 42, the connecting part 41 is connected with the hoisting assembly 3, and the eccentric part 42 is away from the middle part of the connecting part 41; the support assembly is provided with a groove 91 for placing the eccentric part 42, and the eccentric part 42 can rotate in the groove 91.

[0036] The two hoisting assemblies 3 are oppositely arranged on the support assembly, and are used for fixing the support parts on both sides of the gearbox 1 respectively, and in the installed state, the two eccentric parts 42 are transversely offset from the middle part of the gearbox 1.

[0037] Please refer to Figure 1 and Figure 2 The two sides of the gearbox 1 are fixed with the inner holes 33 of the hoisting assemblies 3, and the hoisting assemblies 3 are fixed with the connecting parts 41 of the eccentric parts 4, so that the gearbox 1, the hoisting assemblies 3 and the eccentric parts 4 are fixed as an integral part; the integral part can transfer the gravity center position of the gearbox 1 to the position supported by the contact between the eccentric part 4 and the groove 91, and under the action of the gravity of the gearbox 1 and the lifting tool of the travelling crane, the integral part rotates, that is, the rapid turnover of the gearbox 1 is completed, which is safe and reliable, does not need to change the lifting tool, saves the turnover time and improves the turnover efficiency.

[0038] Gear box 1 both sides have support, support installed in gear box 1 both sides, here the left and right direction is Figure 1 The up and down direction in.

[0039] Hoist assembly 3, both sides have the inner hole 33 that can be placed and fixed support, hoist assembly 3 is equipped with the first lug 31. Please refer to Figure 2 And Figure 3 , inner hole 33 is hoist assembly 3, a plurality of connecting holes are provided on the inner wall of hoist assembly 3, and the support is fixed in the inner hole 33 through the fixing piece, so that the gear box 1 and the hoist assembly 3 are fixedly connected. The fixing piece is preferably a high-strength bolt to ensure the connection strength and reliability.

[0040] Optionally, a plurality of connecting holes can be provided on the inner wall to improve the applicability of the hoist assembly 3.

[0041] The first lug 31 is provided on the hoist assembly 3, and the connecting hole for realizing the connection of the lifting appliance is provided on the first lug 31. Through the setting of the first lug 31, the gear box 1 can be hoisted. Specifically, after the gear box 1, the hoist assembly 3 and the eccentric piece 4 are fixedly connected, the lifting appliance is connected with the first lug 31, and the lifting appliance is started, so that the lifting or lowering of the gear box 1 is completed.

[0042] It should be noted that the connection position of the first lug 31 and the hoist assembly 3 is not perpendicular or horizontal, that is, the axis direction of the connecting hole of the first lug 31 has an angle with the horizontal direction of Figure 1 . When hoisting, the connection of the lifting appliance and the first lug 31 is facilitated, and the lifting appliance and the stress direction are kept in a straight line, so that the stress angle is not formed, so that the hoisting operation is stable and efficient, and the deviation or hoisting out of position in the hoisting process is avoided.

[0043] The eccentric piece 4 has a connecting portion 41 and an eccentric portion 42, please refer to Figure 4 , the connecting portion 41 and the eccentric portion 42 are welded or integrally formed, and the eccentric portion 42 is protruded on the plane of the connecting portion 41. The eccentric portion 42 is an eccentric part, which is away from the middle part of the connecting portion 41. The eccentric piece 4 is symmetrically provided with two, which are correspondingly installed on both sides of the hoist assembly 3.

[0044] The support assembly can be used to support the eccentric piece 4, and the hoist assembly 3 is correspondingly fixed with the gear box 1 and the eccentric piece 4 to become a whole, that is, the support assembly can stably support the three.

[0045] The support assembly is provided with a groove 91 for placing the eccentric part 42, and the eccentric part 42 can rotate in the groove 91. After the eccentric part 4 is fixedly connected with the lifting assembly 3 and the gear box 1, the overall component of the three is sent to the support assembly by the lifting tool of the travelling crane, and at this time, the corresponding eccentric part 42 is connected with the corresponding groove 91. Because the center of gravity of the gear box 1 is offset, the overall component can rotate around the position where the eccentric part 4 is connected with the groove 91, and as the lifting tool of the travelling crane slowly descends, the axis of the gear box 1 will gradually rotate to the horizontal direction, and at this time, the overturning action is completed.

[0046] The gear box overturning device comprises a gear box 1 and a lifting assembly 3, the gear box 1 has support parts on both sides, the lifting assembly 3 has inner holes 33 for placing and fixing the support parts, so that the gear box 1 and the lifting assembly 3 are fixedly connected; the lifting assembly 3 is provided with first lifting lugs 31, so that the gear box 1 fixedly connected with the lifting assembly 3 can be lifted by the lifting tool; the device further comprises an eccentric part 4, the eccentric part 4 has a connecting part 41 and an eccentric part 42, the eccentric part 4 is fixedly connected with the lifting assembly 3 through the connecting part 41, that is, the gear box 1, the lifting assembly 3 and the eccentric part 4 are fixedly connected as an overall component; the eccentric part 42 is arranged to deviate from the center of gravity position of the eccentric part 42; a groove 91 for placing the eccentric part 42 is arranged on the support assembly, and the eccentric part 42 can rotate in the groove 91; the arrangement of the eccentric part 42 can make the center of gravity of the gear box 1 deviate to the support position where the eccentric part 4 contacts with the groove 91 after the gear box 1, the lifting assembly 3 and the eccentric part 4 are fixedly connected; because the center of gravity of the gear box 1 deviates, as the lifting tool of the travelling crane slowly descends, the axis of the gear box 1 will gradually rotate to the horizontal direction, and the overturning action of the gear box 1 is completed. The gear box overturning device offsets the center of gravity of the gear box 1 from the axis direction, so that the gear box 1 is quickly overturned under the action of gravity, without manual operation, and the overturning is safe and reliable.

[0047] On the basis of the above-mentioned embodiments, the lifting assembly 3 is symmetrically provided with second lifting lugs 32 on both sides.

[0048] Please refer to Figure 3 The second lifting lugs 32 are arranged at the middle parts of the symmetric two sides of the lifting assembly 3, so as to assist the lifting operation of the first lifting lugs 31 and enhance the stability and safety of the lifting.

[0049] On the basis of any of the above-mentioned embodiments, a ratchet 11 is connected to the eccentric part 42, the ratchet 11 is protruded from the end face of the eccentric part 42, the support assembly is provided with a ratchet locking part 12 for limiting the ratchet 11, so as to limit the rotating direction of the eccentric part 42.

[0050] The ratchet wheel 11 is a gear with rigid gear surface or friction surface on the outer edge or inner edge, which can be driven to step motion, i.e. can only rotate in one direction and cannot be reversed. The ratchet wheel 11 is arranged on the end face of the eccentric part 42, and when the gear box 1 is turned over, the ratchet wheel 11 can rotate with it. If it is necessary to stop turning over, the locking member can be arranged to lock the device by using the rotation characteristics of the ratchet wheel 11.

[0051] Specifically, the movement direction of the ratchet wheel 11 is opposite to the turning direction of the gear box 1. For example, if the gear box 1 rotates counterclockwise, the ratchet wheel 11 can only rotate clockwise. When the gear box 1 is locked, the gear box 1 will have a tendency to rotate counterclockwise, but due to the rotation direction of the ratchet wheel 11 and the limitation of the locking member, the gear box 1 will not continue to rotate and will not be disengaged from the clamping, thereby preventing the gear box 1 from tilting.

[0052] On the basis of any of the above embodiments, the support assembly comprises a support base 9 provided with a groove 91, and one side of the support base 9 is sequentially connected with a fixed block 10 and a ratchet locking member 12.

[0053] Please refer to Figure 6 The support base 9 is provided with an open end, and the bottom of the open end is provided with a circular hole, i.e. the groove 91. The opening of the open end is not smaller than the size of the groove 91, so as to connect the eccentric part 4 with the support base 9.

[0054] One side of the support base 9 is sequentially connected with the fixed block 10 and the ratchet locking member 12, i.e. the fixed block 10 is fixed on the support base 9, and serves as an intermediate part to enable the ratchet locking member 12 to be connected with the support base 9. The fixed block 10 is arranged on the right side of the support base 9, and one side of the fixed block 10 is fixedly connected with the support base 9 through fasteners, and the other side is provided with a lifting lug having a communication hole connected with the ratchet locking member 12. The direction of the communication hole is the same as the axial direction of the groove 91.

[0055] On the basis of any of the above embodiments, one end of the ratchet locking member 12 is hingedly connected with the fixed block 10, and the other end of the ratchet locking member 12 can be clamped with any tooth of the ratchet wheel 11.

[0056] The ratchet locking member 12 and the lifting lug of the fixed block 10 are hingedly connected through a pin, so that the ratchet locking member 12 can rotate around the hinge point to release or lock the clamping with the ratchet wheel 11.

[0057] When the turning operation is performed, the clamping between the ratchet locking member 12 and the ratchet wheel 11 needs to be released, i.e. the ratchet locking member 12 is rotated in the direction away from the ratchet wheel 11 to release the clamping.

[0058] If the lifting appliance needs to be removed or needs to be temporarily stopped during the overturning operation, the ratchet locking piece 12 is locked with the ratchet 11 without the aid of a crane, that is, the ratchet locking piece 12 is rotated in the direction close to the ratchet 11 to realize the clamping of the ratchet locking piece 12 and the ratchet 11.

[0059] Optionally, the fixing block 10 can also be arranged on the left side or the front side, and a fixed connection can be generated.

[0060] The above front, rear, left and right directions are Figure 6 corresponding directions.

[0061] On the basis of any of the above embodiments, the support assembly further comprises a support 5 and a base 6, the support 5 is arranged at the bottom of the support base 9, and the bottom of the support 5 is connected through the base 6.

[0062] Please refer to Figure 1 and Figure 2 The arrangement of the support 5 and the base 6 can stably support the support base 9, the support 5 is symmetrically arranged on both sides and has a triangular structure to improve the stability of support. The connection part of the support 5 and the base 6 needs to be as tight as possible to ensure the strength of the connection, so that the structure can stably support the whole part of the gear box 1, the hoisting assembly 3 and the eccentric part 4.

[0063] On the basis of any of the above embodiments, the support 5 and the support base 9 are connected with a height adjusting piece 8, which can be used to adjust the height of the support base 9 relative to the base 6.

[0064] The upper end of the height adjusting piece 8 is fixedly connected with the support base 9, and the lower end is detachably connected with the support 5. The height adjusting piece 8 is movably installed relative to the support 5, which can adjust the vertical height of the overturning device and improve the applicability. Before installing the support base 9, the height of the height adjusting piece 8 is adjusted according to the model size of the gear box 1.

[0065] There are various ways to adjust the height of the height adjusting piece 8, such as setting multiple adjusting holes corresponding to different heights or adjusting the pitch of the threaded steel pipe, which is not limited here.

[0066] On the basis of any of the above embodiments, a span adjusting piece 7 is arranged between the two bases 6, and the two ends of the span adjusting piece 7 are connected with the bases 6, which is used to adjust the span between the two supports 5.

[0067] Please refer to Figure 2The two sides of the span adjustment piece 7 are threaded, and threaded holes are arranged at the connection positions of the two bases 6. The span of the support 5 can be adjusted by combining the fastening bolts and the adjustment bolts, and the horizontal distance of the turnover device can be adjusted, thereby improving the applicability, increasing the anti-tilting performance and safety. In combination with the above, the turnover device can adjust the distances in the horizontal and vertical directions to be applicable to different models of gearboxes 1.

[0068] On the basis of any of the above embodiments, the top of the hoisting assembly 3 is connected with an adjustment piece 2, and the adjustment piece 2 has a through hole 21 in communication with the inner hole 33.

[0069] Please refer to Figure 3 and Figure 5 The axis direction of the through hole 21 is a vertical direction, and the adjustment piece 2 is detachably connected with the hoisting assembly 3. Alternatively, the adjustment piece 2 can be regarded as a cover plate on the hoisting assembly 3, which can facilitate the installation and fixation of the support part of the gearbox 1.

[0070] The through hole 21 is in communication with the inner hole 33, and the inner wall of the hoisting assembly 3 is also provided with a communication hole at a symmetrical position of the through hole 21 in the vertical direction. The structure of the communication hole corresponds to the structure of the through hole 21.

[0071] On the basis of any of the above embodiments, the support part is a support arm, and the support arm is fixed to the hoisting assembly 3 in cooperation with the inner hole 33.

[0072] Alternatively, the support part is an elastic pin, and the elastic pin is fixed to the hoisting assembly 3 in cooperation with the inner hole 33 and the through hole 21.

[0073] In order to improve the applicability of the turnover device, the adjustment piece 2 is arranged at the top of the hoisting assembly 3 according to the structure of the support part of the existing gearbox 1, so as to be applicable to the fixed installation of the support arm and the elastic pin.

[0074] Specifically, when the support part is a support arm, the adjustment piece 2 is directly fixedly connected with the hoisting assembly 3, so that the inner hole 33 is installed in cooperation with the support arm, and the support arm can be locked by the plurality of connecting holes and fasteners on the hoisting assembly 3.

[0075] When the support arm is an elastic pin, the adjustment piece 2 is first removed, the elastic pin is inserted into the inner hole 33, and then the adjustment piece 2 is installed at the top of the hoisting assembly 3. The through hole 21 needs to pass through the elastic pin, and finally the support arm can be locked by the plurality of connecting holes and fasteners on the hoisting assembly 3.

[0076] The above, the structure of the support arm or the elastic pin can realize the fixed installation of the gearbox 1, so as to facilitate the subsequent turnover operation and improve the applicability of the turnover device.

[0077] The gear box turnover device can offset the gravity center position of the gear box 1 from the axis direction, so that the gear box 1 is quickly turned over under the action of gravity, without manual operation, and the turning over is safe and reliable, and the turning over efficiency is improved; the ratchet 11 and the ratchet locking part 12 are arranged, so that the turning over action can be stopped without the help of a crane, and the gear box 1 is firmly fixed; the adjusting part 2, the height adjusting part 8 and the span adjusting part 7 are arranged, so that the turning over device can be suitable for various gear boxes 1, one machine is used for multiple purposes, and the applicability and the turning over efficiency are improved.

[0078] The various embodiments are described in a progressive manner in the specification, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between the various embodiments can be referred to each other.

[0079] The gear box turnover device provided by the application is described in detail. The principles and implementation modes of the application are described by applying specific examples in this paper, and the above description of the embodiments is only used to help understand the method of the application and its core idea. It should be pointed out that those skilled in the art can make some improvements and modifications to the application without departing from the principles of the application, and these improvements and modifications also fall within the protection scope of the claims of the application.

Claims

1. A gear box turnover device for hoisting a gear box (1) having support portions on both sides; characterized in that, The utility model relates to a lifting device for gear box, which comprises: a lifting assembly (3) having an inner hole (33) for placing and fixing the support part, the lifting assembly (3) being provided with a first lifting lug (31); an eccentric part (4) having a connecting part (41) and an eccentric part (42), the connecting part (41) being connected with the lifting assembly (3); a support assembly provided with a groove (91) for placing the eccentric part (42), the eccentric part (42) being rotatable in the groove (91); two lifting assemblies (3) being oppositely arranged on the support assembly for fixing the support parts on both sides of the gear box (1) respectively, in the installed state, the two eccentric parts (42) being transversely offset from the middle part of the gear box (1); the lifting assembly (3) being symmetrically provided with a second lifting lug (32) on both sides; the eccentric part (42) being connected with a ratchet wheel (11), the ratchet wheel (11) being protruded from the end face of the eccentric part (42), the support assembly being provided with a ratchet wheel locking part (12) matched with the ratchet wheel (11) for limiting the rotation direction of the eccentric part (42); the support assembly comprising a support base (9) provided with the groove (91), one side of the support base (9) being sequentially connected with a fixed block (10) and the ratchet wheel locking part (12); one end of the ratchet wheel locking part (12) being hinged to the fixed block (10), the other end of the ratchet wheel locking part (12) being capable of being clamped with any tooth of the ratchet wheel (11).

2. A gear box roll over device according to claim 1, characterised in that, The support assembly further comprises a support frame (5) and a base (6), the support frame (5) being arranged at the bottom of the support base (9), the bottom of the support frame (5) being connected through the base (6).

3. A gear box roll over device according to claim 2, characterised in that, A height adjusting part (8) is connected between the support base (9) and the support frame (5), which is used for adjusting the height of the support base (9) relative to the base (6).

4. A gear box roll over device according to claim 3, characterised in that, A span adjusting part (7) is arranged between two bases (6), both ends of the span adjusting part (7) being connected with the bases (6), which is used for adjusting the span between the two support frames (5).

5. A gear box roll over device according to any one of claims 1 to 4, characterised in that, A adjusting part (2) is connected to the top of the lifting assembly (3), the adjusting part (2) having a through hole (21) communicated with the inner hole (33).

6. A gear box roll over device according to claim 5, characterised in that, When the support part is a support arm, the support arm is fixed in the lifting assembly (3) in cooperation with the inner hole (33); or, when the support part is an elastic pin, the elastic pin is fixed in the lifting assembly (3) in cooperation with the inner hole (33) and the through hole (21) in sequence.

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