Gear box supporting shaft dismounting tool

Abstract

The utility model discloses a gear box supporting shaft dismounting tool which is used for dismounting a supporting shaft of a gear box and comprises a hydraulic pump, a pressing plate, a first fixing set, a second fixing set and a third fixing set, when the gear box supporting shaft dismounting tool is used, the hydraulic pump is fixed to the pressing plate through the first fixing set, and the pressing plate is fixed to the gear box through the second fixing set and the third fixing set; the hydraulic pump abuts against the supporting shaft of the gearbox, when oil is injected into the hydraulic pump, the second end of the hydraulic pump pushes the supporting shaft to move in the direction of the axis of the supporting shaft, the supporting shaft is separated from the gearbox, the supporting shaft is rapidly disassembled, the disassembling process is simple and convenient, the disassembling efficiency is high, and the assembling process of the gearbox supporting shaft disassembling tool is simple and convenient. And therefore, the convenience of dismounting the supporting shaft is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shaft removal, in particular to a gear box support shaft removal tool. Background Art

[0002] In order to achieve torque transmission, the wind turbine speed increaser adopts an interference fit between the support shaft and the circular torque arm of the gearbox. When the gearbox is unpacked for inspection or repair, the support shaft needs to be removed. Due to the structural limitations of the support shaft, the end screw holes are small in size and few in number. Therefore, the commonly used disassembly method is the press disassembly method, which is to remove the support shaft and the gearbox assembly from the gearbox, and then send the assembly to the press to remove the support shaft from the gearbox.

[0003] The press dismantling method requires the removal of the connecting studs on the joint surface of the box body. Due to the large size of the entire machine, this method cannot directly remove the support shaft, and the dismantling process is relatively cumbersome.

[0004] Therefore, how to improve the convenience of removing the support shaft is a technical problem that technical personnel in this field currently need to solve. Utility Model Content

[0005] In view of this, the purpose of the utility model is to provide a gear box support shaft disassembly tool to improve the convenience of disassembly of the support shaft;

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A gear box support shaft disassembly tool, used for disassembling the support shaft of the gear box, comprises a hydraulic pump, a pressure plate, a first fixing group, a second fixing group and a third fixing group, wherein:

[0008] The first end of the first fixing group is connected to the pressing plate, and the second end thereof is connected to the hydraulic pump. The first end of the hydraulic pump abuts against the pressing plate, and the second end thereof abuts against the supporting shaft. The first fixing group is used to connect the pressing plate and the hydraulic pump;

[0009] The first end of the second fixing group is connected to the pressing plate, and the second end thereof is connected to the connecting stud of the gear box;

[0010] The first end of the third fixing group is connected to the pressing plate, and the second end thereof is connected to the gear box;

[0011] The second fixing group and the third fixing group are used to connect the pressing plate and the gear box;

[0012] When the hydraulic pump is filled with oil, the second end of the hydraulic pump pushes the supporting shaft to move along the direction of its own axis.

[0013] Optionally, in the above-mentioned gear box support shaft disassembly tool, the pressing plate includes a first mounting hole, a second mounting hole and a third mounting hole, wherein:

[0014] The number of the first mounting holes is two, and the two first mounting holes are arranged in parallel, and the first end of the first fixing group passes through the first mounting hole and is connected to the pressing plate;

[0015] The extension direction of the second mounting hole is perpendicular to the extension direction of the first mounting hole, and the first end of the second fixing group passes through the second mounting hole and is connected to the pressing plate;

[0016] The third mounting hole is arranged opposite to the second mounting hole, and the first end of the third fixing group passes through the third mounting hole and is connected to the pressing plate.

[0017] Optionally, in the above-mentioned gearbox support shaft disassembly tooling, the first fixing group includes a first connecting rod, a connecting plate and a first nut, the first end of the first connecting rod cooperates with the first nut, and the second end thereof is connected to the connecting plate, and the connecting plate is used to clamp the second end of the hydraulic pump.

[0018] Optionally, in the above-mentioned gearbox support shaft disassembly tool, the second fixing group includes a second connecting rod and a second nut, the first end of the second connecting rod cooperates with the second nut, and the second end thereof is connected to the connecting stud of the gearbox.

[0019] Optionally, in the above-mentioned gearbox support shaft disassembly tooling, the third fixing group includes a third connecting rod, a U-shaped bracket and a third nut, the first end of the third connecting rod cooperates with the third nut, and the second end thereof is connected to the U-shaped bracket, and the U-shaped bracket is used to clamp the gearbox.

[0020] Optionally, in the above-mentioned gearbox support shaft disassembly tool, the second fixing group also includes an internal thread transition sleeve, which is arranged at the second end of the second connecting rod and is used to connect the second connecting rod and the connecting stud of the gearbox.

[0021] Optionally, in the above-mentioned gearbox support shaft disassembly tool, the third fixing group also includes an internal and external thread transition sleeve, which is arranged at the second end of the third connecting rod and is used to connect the third connecting rod and the U-shaped bracket.

[0022] Optionally, in the above-mentioned gear box support shaft disassembly tool, the third fixing group also includes a connecting bolt group, and the connecting bolt group is used to connect the U-shaped bracket and the gear box.

[0023] Optionally, in the above-mentioned gearbox support shaft disassembly tooling, the U-shaped bracket includes a first side plate, a second side plate and a middle plate, the second end of the third connecting rod is connected to the first side plate, and the connecting bolt group includes a first bolt and a second bolt, the first bolt is arranged on the middle plate, and the second bolt is arranged on the second side plate.

[0024] Optionally, in the above-mentioned gear box support shaft disassembly tool, the second mounting hole and the third mounting hole are arc-shaped.

[0025] The gear box support shaft disassembly tool provided by the utility model, when in use, the first fixing group fixes the hydraulic pump to the pressure plate, the second fixing group and the third fixing group fix the pressure plate to the gear box, the hydraulic pump abuts against the support shaft of the gear box, and when the hydraulic pump is filled with oil, the second end of the hydraulic pump pushes the support shaft to move along the direction of its own axis to separate the support shaft from the gear box, thereby realizing rapid disassembly of the support shaft, the disassembly process is simple and the disassembly efficiency is high, and the assembly process of the gear box support shaft disassembly tool is simple, thereby improving the convenience of removing the support shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a schematic diagram of the cooperation between the gear box support shaft disassembly tool and the gear box disclosed in the embodiment of the utility model;

[0028] Figure 2 It is a schematic diagram of the partial cooperation between the gear box support shaft disassembly tool and the gear box disclosed in the embodiment of the utility model;

[0029] Figure 3 A top view of the gear box support shaft disassembly tool and the gear box disclosed in an embodiment of the utility model;

[0030] Figure 4 This is a front view of the gear box support shaft disassembly tool disclosed in an embodiment of the utility model;

[0031] Figure 5 A top view of a gearbox support shaft disassembly tool disclosed in an embodiment of the utility model;

[0032] Figure 6 This is a schematic diagram of the structure of a U-shaped bracket disclosed in an embodiment of the utility model;

[0033] Figure 7 A three-dimensional diagram of a gearbox support shaft disassembly tool disclosed in an embodiment of the utility model;

[0034] Figure 8 A three-dimensional diagram of another angle of the gear box support shaft disassembly tool disclosed in an embodiment of the utility model;

[0035] in:

[0036] Hydraulic pump 100;

[0037] Pressing plate 200, first mounting hole 201, second mounting hole 202, third mounting hole 203;

[0038] A first connecting rod 300, a connecting plate 301, and a first nut 302;

[0039] A second connecting rod 400, a second nut 401, and an internal thread transition sleeve 402;

[0040] A third connecting rod 500, a U-shaped bracket 501, a first side plate 5011, a second side plate 5012, a middle plate 5013, a third nut 502, and an internal and external thread transition sleeve 503;

[0041] A first bolt 600, a second bolt 601;

[0042] Support shaft 700. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making novel work are within the scope of protection of the utility model.

[0044] In the description of the present invention, it should be understood that the terms "upper", "lower", "top surface", "bottom surface" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the positions or elements referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limitations of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0045] like Figure 1-Figure 8As shown, the gearbox support shaft disassembly tool disclosed in the utility model is used to disassemble the support shaft 700 of the gearbox, including a hydraulic pump 100, a pressure plate 200, a first fixing group, a second fixing group and a third fixing group, wherein the first end of the first fixing group is connected to the pressure plate 200, and the second end thereof is connected to the hydraulic pump 100, the first end of the hydraulic pump 100 abuts against the pressure plate 200, and the second end thereof abuts against the support shaft 700, the first fixing group is used to connect the pressure plate 200 and the hydraulic pump 100, the first end of the second fixing group is connected to the pressure plate 200, and the second end thereof is connected to the connecting stud of the gearbox, the first end of the third fixing group is connected to the pressure plate 200, and the second end thereof is connected to the gearbox, the second fixing group and the third fixing group are used to connect the pressure plate 200 and the gearbox, and when the hydraulic pump 100 is filled with oil, the second end of the hydraulic pump 100 pushes the support shaft 700 to move along the direction of its own axis. Specifically, the second fixing group and the third fixing group are respectively arranged on both sides of the first fixing group, so that the hydraulic pump 100 is arranged in the middle of the pressure plate 200. When the hydraulic pump 100 is filled with oil, the second fixing group and the third fixing group hold the gear box tightly, so that the support shaft 700 is stably separated from the gear box under the push of the hydraulic pump 100. When in use, the first fixing group fixes the hydraulic pump 100 to the pressure plate 200, and the second fixing group and the third fixing group fix the pressure plate 200 to the gear box. The hydraulic pump 100 abuts against the support shaft 700 of the gear box. When the hydraulic pump 100 is filled with oil, the second end of the hydraulic pump 100 pushes the support shaft 700 to move along the direction of its own axis, separating the support shaft 700 from the gear box, and realizing the rapid disassembly of the support shaft 700. The disassembly process is simple and the disassembly efficiency is high. The assembly process of the gear box support shaft disassembly tool is simple, thereby improving the convenience of disassembly of the support shaft 700.

[0046] In order to optimize the above technical solution, the pressing plate 200 includes a first mounting hole 201, a second mounting hole 202 and a third mounting hole 203, wherein the number of the first mounting holes 201 is two, and the two first mounting holes 201 are arranged in parallel, the first end of the first fixing group passes through the first mounting hole 201 to connect with the pressing plate 200, the extension direction of the second mounting hole 202 is perpendicular to the extension direction of the first mounting hole 201, the first end of the second fixing group passes through the second mounting hole 202 to connect with the pressing plate 200, the third mounting hole 203 is arranged opposite to the second mounting hole 202, and the first end of the third fixing group passes through the third mounting hole 203 to connect with the pressing plate 200. Specifically, the number of the first mounting holes 201 is two, so that the first fixing group can fix the hydraulic pump 100 on both sides of the hydraulic pump 100, while ensuring the fixing stability of the hydraulic pump 100. When in use, the first fixing group, the second fixing group and the third fixing group are connected to the pressure plate 200 through the first mounting hole 201, the second mounting hole 202 and the third mounting hole 203 respectively, completing the assembly of the gear box support shaft disassembly tooling, and the entire assembly process is convenient and quick.

[0047] In order to optimize the above technical solution, the first fixing group includes a first connecting rod 300, a connecting plate 301 and a first nut 302. The first end of the first connecting rod 300 cooperates with the first nut 302, and the second end thereof is connected to the connecting plate 301. The connecting plate 301 is used to clamp the second end of the hydraulic pump 100. Specifically, the first connecting rod 300 is an adjustable rod. In some embodiments of the utility model, the first connecting rod 300 includes a support rod and a sleeve rod, the sleeve rod is sleeved outside the support rod, and the sleeve rod and the support rod are provided with a plurality of through holes on their circumferences. When in use, bolts can pass through the plurality of through holes to fix the relative positions of the sleeve rod and the support rod, thereby realizing the length adjustment of the first connecting rod 300. In other embodiments of the utility model, the first connecting rod 300 includes a support rod and a sleeve rod, the support rod and the sleeve rod are connected by internal and external threads, and the operator can adjust the relative positions of the support rod and the sleeve rod through the threads. Further, the scheme that the first connecting rod 300 is in other forms is also within the protection scope of the utility model, and will not be repeated herein. By setting the first connecting rod 300 as an adjustable rod, the first fixing group can be applied to a variety of hydraulic pumps 100, thereby improving the scope of application of the gearbox support shaft disassembly tool. When in use, the first end of the first connecting rod 300 passes through the first mounting hole 201, the first nut 302 cooperates with the first end of the first connecting rod 300, and the length of the first connecting rod 300 is adjusted so that the connecting plate 301 is engaged with the hydraulic pump 100, thereby achieving the fixation of the hydraulic pump 100. It should be noted that the number of the first fixing groups is two or more, and the utility model preferably uses four first fixing groups to fix the hydraulic pump 100.

[0048] In order to optimize the above technical solution, the second fixing group includes a second connecting rod 400 and a second nut 401. The first end of the second connecting rod 400 cooperates with the second nut 401, and the second end thereof is connected to the connecting stud of the gear box. When in use, the operator passes the second connecting rod 400 through the second mounting hole 202, the second nut 401 cooperates with the first end of the second connecting rod 400, and then connects the second end of the second connecting rod 400 to the connecting stud of the gear box to achieve the connection between the pressure plate 200 and one side of the gear box. Furthermore, the second connecting rod 400 is a screw. It should be noted that the number of the second fixing groups is two or more, and the utility model preferably uses two second fixing groups to fix one side of the gear box.

[0049] In order to optimize the above technical solution, the third fixing group includes a third connecting rod 500, a U-shaped bracket 501 and a third nut 502. The first end of the third connecting rod 500 cooperates with the third nut 502, and the second end thereof is connected to the U-shaped bracket 501. The U-shaped bracket 501 is used to clamp the gearbox. Specifically, the U-shaped bracket 501 is used to clamp the side of the front box body of the gearbox. When in use, the operator passes the first end of the third connecting rod 500 through the third mounting hole 203, and the third nut 502 cooperates with the first end of the third connecting rod 500, and then moves the pressing plate 200 so that the hydraulic pump 100 is aligned with the support shaft 700, the second connecting rod 400 corresponds to the connecting stud of the gearbox, and the U-shaped bracket 501 is clamped to the gearbox, thereby realizing the coordination between the gearbox support shaft disassembly tool and the gearbox, and preparing for disassembling the support shaft 700. It should be noted that the number of the third fixing groups is two or more, and the utility model preferably uses two third fixing groups to fix the other side of the gearbox.

[0050] In order to optimize the above technical solution, the second fixing group also includes an internal thread transition sleeve 402, which is arranged at the second end of the second connecting rod 400 and is used to connect the second connecting rod 400 with the connecting stud of the gear box. When in use, the operator passes the second connecting rod 400 through the second mounting hole 202, the second nut 401 is matched with the first end of the second connecting rod 400, and then the second end of the second connecting rod 400 is matched with the internal thread transition sleeve 402, and the connecting stud of the gear box is matched with the internal thread transition sleeve 402, so as to realize the connection between the pressing plate 200 and one side of the gear box.

[0051] In order to optimize the above technical solution, the third fixing group also includes an internal and external thread transition sleeve 503, which is arranged at the second end of the third connecting rod 500 and is used to connect the third connecting rod 500 and the U-shaped bracket 501. When in use, the operator passes the first end of the third connecting rod 500 through the third mounting hole 203, the third nut 502 cooperates with the first end of the third connecting rod 500, the second end of the third connecting rod 500 is inserted into the internal and external thread transition sleeve 503, the internal and external thread transition sleeve 503 is inserted into the U-shaped bracket 501, and connected with the U-shaped bracket 501, so as to realize the connection between the pressure plate 200 and the other side of the gear box. At this time, the hydraulic pump 100 is aligned with the support shaft 700. When the hydraulic pump 100 is filled with oil, the piston of the hydraulic pump 100 will press and push the support shaft 700 to move until it is separated from the gear box.

[0052] In order to optimize the above technical solution, the third fixing group also includes a connecting bolt group, which is used to connect the U-shaped bracket 501 and the gear box. Specifically, the U-shaped bracket 501 and the gear box are bolted on the basis of the clamping connection, which can further improve the connection stability between the gear box support shaft disassembly tool and the gear box.

[0053] In order to optimize the above technical solution, the U-shaped bracket 501 includes a first side plate 5011, a second side plate 5012 and a middle plate 5013, the second end of the third connecting rod 500 is connected to the first side plate 5011, and the connecting bolt group includes a first bolt 600 and a second bolt 601, the first bolt 600 is arranged on the middle plate 5013, and the second bolt 601 is arranged on the second side plate 5012. When in use, after the U-shaped bracket 501 is clamped with the gear box, the first bolt 600 is connected to the middle plate 5013, and the second bolt 601 is connected to the second side plate 5012, so that the U-shaped bracket 501 is fixed to the gear box, thereby improving the connection stability between the gear box support shaft disassembly tool and the gear box.

[0054] Furthermore, hoisting holes are provided on the pressing plate 200 and the first connecting rod 300 to facilitate hoisting of the hydraulic pump 100 and the pressing plate 200 after integration, so that the hydraulic pump 100 is aligned with the supporting shaft 700 .

[0055] In order to optimize the above technical solution, the second mounting hole 202 and the third mounting hole 203 are arc-shaped. Specifically, the second mounting hole 202 is arc-shaped, which can achieve fine adjustment of the relative position of the second connecting rod 400 and the pressing plate 200, and the third mounting hole 203 is arc-shaped, which can achieve fine adjustment of the relative position of the third connecting rod 500 and the pressing plate 200, thereby improving the versatility of the gearbox support shaft disassembly tool.

[0056] The utility model arranges an internal thread transition sleeve 402 and an internal and external thread transition sleeve 503, so that the gear box support shaft disassembly tool can realize the conversion of thread specifications, meet various interference fit disassembly requirements, and improve the versatility of the gear box support shaft disassembly tool; arranges an internal thread transition sleeve 402 and an internal and external thread transition sleeve 503, so that the gear box support shaft disassembly tool and the gear box can be stably connected, thereby ensuring the stability and safety of the gear shaft disassembly process; arranges a U-shaped bracket 501, an internal thread transition sleeve 402 and an internal and external thread transition sleeve 503, reduces the size and weight of the gear box support shaft disassembly tool, and improves the convenience of using the gear box support shaft disassembly tool; through the integrated assembly of the pressure plate 200 and the hydraulic pump 100, the gear box support shaft disassembly tool does not need to be aligned with the support shaft 700 multiple times, reduces the number of hoisting times required for disassembling the support shaft 700, and improves the convenience of disassembling the support shaft 700.

[0057] The advantages of the utility model are:

[0058] (1) Improves the convenience of dismantling the support shaft;

[0059] (2) Strong versatility and wide application range;

[0060] (3) Stable and reliable, easy to install and disassemble.

[0061] It should be noted that the gearbox support shaft disassembly tool provided by the utility model can be used in the technical field of shaft disassembly or other fields. Other fields are any fields other than the technical field of shaft disassembly. The above is only an example and does not limit the application field of the gearbox support shaft disassembly tool provided by the utility model.

[0062] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0063] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0064] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0065] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A gear box support shaft disassembly tool, characterized in that: A support shaft for disassembling a gear box, comprising a hydraulic pump, a pressure plate, a first fixing group, a second fixing group and a third fixing group, wherein: The first end of the first fixing group is connected to the pressing plate, and the second end thereof is connected to the hydraulic pump. The first end of the hydraulic pump abuts against the pressing plate, and the second end thereof abuts against the supporting shaft. The first fixing group is used to connect the pressing plate and the hydraulic pump. The first end of the second fixing group is connected to the pressure plate, and the second end thereof is connected to the connecting stud of the gear box; The first end of the third fixing group is connected to the pressing plate, and the second end thereof is connected to the gear box; The second fixing group and the third fixing group are used to connect the pressing plate and the gear box; When the hydraulic pump is filled with oil, the second end of the hydraulic pump pushes the support shaft to move along the direction of its own axis.

2. The gear box support shaft disassembly tool as claimed in claim 1, characterized in that: The pressing plate comprises a first mounting hole, a second mounting hole and a third mounting hole, wherein: The number of the first mounting holes is two, and the two first mounting holes are arranged in parallel, and the first end of the first fixing group passes through the first mounting hole and is connected to the pressing plate; The extension direction of the second mounting hole is perpendicular to the extension direction of the first mounting hole, and the first end of the second fixing group passes through the second mounting hole and is connected to the pressing plate; The third mounting hole is arranged opposite to the second mounting hole, and the first end of the third fixing group passes through the third mounting hole and is connected to the pressing plate.

3. The gear box support shaft disassembly tool as claimed in claim 2, characterized in that: The first fixing group includes a first connecting rod, a connecting plate and a first nut. The first end of the first connecting rod cooperates with the first nut, and the second end of the first connecting rod is connected to the connecting plate. The connecting plate is used to clamp the second end of the hydraulic pump.

4. The gear box support shaft disassembly tool as claimed in claim 2, characterized in that: The second fixing group includes a second connecting rod and a second nut. The first end of the second connecting rod cooperates with the second nut, and the second end of the second connecting rod is connected to the connecting stud of the gear box.

5. The gear box support shaft disassembly tool as claimed in claim 2, characterized in that: The third fixing group includes a third connecting rod, a U-shaped bracket and a third nut. The first end of the third connecting rod cooperates with the third nut, and the second end of the third connecting rod is connected to the U-shaped bracket. The U-shaped bracket is used to clamp the gear box.

6. The gear box support shaft disassembly tool as claimed in claim 4, characterized in that: The second fixing group also includes an internal thread transition sleeve, which is arranged at the second end of the second connecting rod and is used to connect the second connecting rod and the connecting stud of the gear box.

7. The gear box support shaft disassembly tool as claimed in claim 5, characterized in that: The third fixing group also includes an internal and external thread transition sleeve, which is arranged at the second end of the third connecting rod and is used to connect the third connecting rod and the U-shaped bracket.

8. The gear box support shaft disassembly tool as claimed in claim 7, characterized in that: The third fixing group also includes a connecting bolt group, and the connecting bolt group is used to connect the U-shaped bracket and the gear box.

9. The gear box support shaft disassembly tool as claimed in claim 8, characterized in that: The U-shaped bracket includes a first side plate, a second side plate and a middle plate, the second end of the third connecting rod is connected to the first side plate, the connecting bolt group includes a first bolt and a second bolt, the first bolt is arranged on the middle plate, and the second bolt is arranged on the second side plate.

10. The gear box support shaft disassembly tool as claimed in claim 2, characterized in that: The second mounting hole and the third mounting hole are arc-shaped.

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