Door frame welding tool

Abstract

The invention relates to the technical field of door frame welding, and discloses a door frame welding tool which comprises a first frame base, a connecting plate, a second frame base and a first rotating shaft, the back face of the first frame base is fixedly connected with the connecting plate, a first hole is formed in the top of the connecting plate, and the first frame base is fixedly connected with the second frame base through the connecting plate; a second hole is formed in the front face of the first frame base, and a first rotating shaft is installed on the inner wall of the second hole. A first transverse reinforcing rib, a first reinforcing rib supporting plate, a second transverse reinforcing rib and a second reinforcing rib supporting plate are arranged in the first frame base and the second frame base correspondingly so that the stability of the device can be improved, and therefore when the door frame enters the device, the situation that the whole device is subjected to large pressure due to the fact that the door frame is heavy is avoided; and therefore, the safety of workers during welding is guaranteed to a great extent, the welding operation of the workers is more relieved, and the stable proceeding of the welding operation of the workers is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of door frame welding, in particular to a door frame welding tool. Background Art

[0002] Door frame welding tooling is a tool used to assist welding operations. Its main function is to ensure that the welded parts can be accurately positioned and reliably clamped for welding operations. This tooling plays an important role in modern welding production. It can not only improve production efficiency, but also ensure welding quality, reduce the labor intensity of workers, and create conditions for the mechanization and automation of welding production.

[0003] Although the existing door frame welding tool can assist workers in welding door frames, the following problems still exist: first, the existing door frame welding tool is mostly composed of various tools, and there is no complete supporting parts to form the whole welding tool, which makes it impossible for many tools to adapt to each other, and they are all used to complete welding. Because many parts are not compatible with each other, they are used to make do, which makes it very safe for workers to use them; second, the existing door frame welding tool cannot be rotated freely, so that when welding, workers can only weld a single angle surface each time. When welding the other side, it takes a lot of time to turn the surface, which greatly reduces the welding speed of the workers. At the same time, because the angle can be turned freely for welding, the workers do not need to climb and can weld the door frame on the ground, which also avoids the risk of falling to a certain extent; third, the existing door frame welding tool can only fix the door frame for welding, and there is no corresponding strengthening support component for strengthening support, which makes the workers need to pay attention to the overall stability of the door frame welding tool in real time when welding, which has a great safety hazard, and the workers are also worried, which is not conducive to the stable performance of the workers' welding. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a door frame welding tool, which has the advantages of ensuring that the components between devices are compatible with each other, the assembled device is safer than the assembled device, the device can be flexibly flipped to adjust the angle, which is convenient for welding and improves the welding speed. At the same time, there is no need for workers to climb for welding to avoid the risk of falling, and reinforced support components are provided to effectively ensure the overall stability of the device. It solves the problems that the incompatible parts between the assembled parts are forced to be assembled together and easily cause safety hazards, the existing door frame welding tool cannot freely adjust the angle for welding, which slows down the welding speed, requires climbing during welding, which easily causes people to fall, and the existing door frame welding tool does not have enough supporting components, which easily makes the overall device unstable and prone to disintegration, increases the psychological burden of workers, and is not conducive to the stable progress of workers' welding work.

[0005] (II) Technical solution In order to achieve the above-mentioned door frame welding purpose, the present invention provides the following technical solutions: a door frame welding tool, comprising a first frame, a connecting plate is fixedly connected to the back of the first frame, a first hole is provided on the top of the connecting plate, the first frame is fixedly connected to the second frame through the connecting plate, a second hole is provided on the front of the first frame, a first rotating shaft is installed on the inner wall of the second hole, a third hole is provided on the front of the second frame, a second rotating shaft is installed on the inner wall of the third hole, a rotating module is provided between the first rotating shaft and the second rotating shaft, a door frame fixing module is provided at one end of the rotating module, and a door frame body is installed on the inner wall of the door frame fixing module.

[0006] Preferably, the first mount includes a first mount body, an inner wall of the first mount body is fixedly connected with a first transverse reinforcing rib, and a bottom of the first transverse reinforcing rib is fixedly connected with a first reinforcing rib support plate.

[0007] Preferably, a first threaded hole is opened on the front side of the first bracket body, a first bolt is threadedly connected to the inner wall of the first threaded hole, a first threaded connector is threadedly connected to the first threaded hole through the first bolt, and a first balancing base is fixedly connected to one side of the first threaded connector.

[0008] Preferably, the second mount includes a second mount body, an inner wall of the second mount body is fixedly connected with a second transverse reinforcing rib, and a bottom of the second transverse reinforcing rib is fixedly connected with a second reinforcing rib support plate.

[0009] Preferably, a second threaded hole is provided on the front side of the second bracket body, a second bolt is threadedly connected to the inner wall of the second threaded hole, a second threaded connector is threadedly connected to the second threaded hole via the second bolt, and a second balancing base is fixedly connected to one side of the second threaded connector.

[0010] Preferably, the rotating module includes a rotating rod, one end of the rotating rod is fixedly connected to a rotating rod head, the surface of the rotating rod head is fixedly connected to a plug plate base, a third threaded hole is opened on the top of the plug plate base, the inner wall of the third threaded hole is threadedly connected to a third bolt, and the third threaded hole is threadedly connected to the plug plate through the third bolt.

[0011] Preferably, a shift plate is fixedly connected to one side of the plug board, a plug board slot is provided on the side of the plug board base, the plug board slot and the plug board are adapted to each other, and a fourth hole is provided on the surface of the rotating rod.

[0012] Preferably, an insertion rod is inserted into the inner wall of the fourth hole, the first hole and the insertion rod are adapted to each other, a fourth threaded hole is formed at the other end of the rotating rod, and a threaded base is threadedly connected to the inner wall of the fourth threaded hole.

[0013] Preferably, the door frame fixing module comprises a first door frame fixing frame, a side surface of the first door frame fixing frame is fixedly connected with a threaded hole base, and an inner wall of the threaded hole base is threadedly connected with a fourth bolt.

[0014] Preferably, the threaded hole base is threadedly connected to the second door frame fixing frame through a fourth bolt, the bottom of the first door frame fixing frame is fixedly connected to a vertical support rod, the front of the vertical support rod is fixedly connected to a rotating shaft base, the rotating shaft base is provided with a rotating shaft hole, the inner wall of the rotating shaft hole is installed with a rotating shaft, and the inner wall of the rotating shaft is installed with a rotating module.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a door frame welding tool, which has the following beneficial effects: 1. The door frame welding tooling is provided with a first frame, a second frame, a connecting plate, a first rotating shaft, a second rotating shaft, a rotating module and a door frame fixing module, so that the devices can be adapted to each other, so that the device can run more smoothly, and the safety of the device is greatly guaranteed.

[0016] 2. The door frame welding tool is equipped with a rotating module and a door frame fixing module. Through the assembly of the rotating module and the door frame fixing module, the device can be flipped freely, which enables workers to easily obtain the ideal angle and position, which greatly reduces the welding time of workers. At the same time, workers do not need to climb up a ladder to weld some higher parts, so this also avoids the occurrence of safety accidents of workers falling.

[0017] 3. The door frame welding tool increases the stability of the device by respectively providing the first transverse reinforcing rib, the first reinforcing rib support plate, the second transverse reinforcing rib and the second reinforcing rib support plate in the first frame and the second frame. As a result, when the door frame enters the device, the device as a whole will not be subjected to great pressure as a result of the heavy door frame, causing the device to disintegrate. This ensures the safety of workers during welding to a great extent, makes workers more assured in welding operations, and ensures the stable progress of workers' welding work. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] FIG1 is a schematic diagram of a door frame welding tool structure proposed by the present invention; FIG2 is a schematic diagram of a bracket assembly proposed by the present invention; FIG3 is a schematic diagram of a first frame structure proposed by the present invention; FIG4 is a schematic diagram of a second frame structure proposed by the present invention; FIG5 is a schematic diagram of a rotating module structure proposed by the present invention; FIG6 is a schematic diagram of a door frame fixing module structure proposed by the present invention; In the figure: 1. first frame; 101. first frame body; 102. first transverse reinforcement rib; 103. first reinforcement rib support plate; 104. first threaded connector; 105. first balance base; 2. connecting plate; 3. second frame; 301. second frame body; 302. second transverse reinforcement rib; 303. second reinforcement rib support plate; 304. second threaded connector; 305. second balance base; 4. first rotating shaft; 5. second rotating shaft; 6. rotating module; 601. rotating rod; 602. rotating rod head; 603. plug-in base; 604. plug-in; 605. dial plate; 606. plug-in rod; 607. threaded base; 7. door frame fixing module; 701. first door frame fixing frame; 702. second door frame fixing frame; 703. vertical support rod; 704. rotating shaft base; 8. door frame body. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Please refer to a door frame welding tool shown in Figure 1-2, which includes a first frame 1, a connecting plate 2 is fixedly connected to the back of the first frame 1, a first hole is opened on the top of the connecting plate, the first frame 1 is fixedly connected to the second frame 3 through the connecting plate 2, a second hole is opened on the front of the first frame 1, a first rotating shaft 4 is installed on the inner wall of the second hole, a third hole is opened on the front of the second frame 3, a second rotating shaft 5 is installed on the inner wall of the third hole, a rotating module 6 is provided between the first rotating shaft 4 and the second rotating shaft 5, a door frame fixing module 7 is provided at one end of the rotating module 6, and a door frame body 8 is installed on the inner wall of the door frame fixing module 7.

[0021] The connecting plate 2 is welded to the first frame 1 and the second frame 3 by welding, the first rotating shaft 4 is installed in the second hole of the first frame 1, the second rotating shaft 5 is installed in the third hole of the second frame 3, the rotating module 6 is installed between the first rotating shaft 4 and the second rotating shaft 5, and the door frame fixing module 7 is installed on the rotating module 6.

[0022] When in use, assemble according to the above-mentioned assembly steps, then lift the door frame main body 8 into the door frame fixed module 7 by a crane, and the worker can start welding. When it is necessary to adjust the angle or obtain the ideal welding position, the worker rotates the rotating module 6 to rotate the door frame fixed module 7, and then fixes the rotating module 6 to expose the ideal position to the worker. When adjustment is needed again, repeat the above process until the welding is completed.

[0023] By assembling the first frame 1, the second frame 3, the connecting plate 2, the first rotating shaft 4, the second rotating shaft 5, the rotating module 6 and the door frame fixing module 7, the devices can be adapted to each other, so that the device can run more smoothly, which greatly ensures the safety of the device.

[0024] As shown in Figures 3 and 4, the first frame 1 includes a first frame body 101, the inner wall of the first frame body 101 is fixedly connected with a first transverse reinforcement rib 102, the bottom of the first transverse reinforcement rib 102 is fixedly connected with a first reinforcement rib support plate 103, a first threaded hole is opened on the front of the first frame body 101, the inner wall of the first threaded hole is threadedly connected with a first bolt, the first threaded hole is threadedly connected with a first threaded connector 104 through the first bolt, and one side of the first threaded connector 104 is fixedly connected with a first balancing base 105.

[0025] The first transverse reinforcement rib 102 is welded to the inner wall of the first frame body 101, the first reinforcement rib support plate 103 is welded to the bottom of the first transverse reinforcement rib 102 and the bottom of the first frame body 101, the first threaded connector 104 is integrally connected to the first balance base 105, the first threaded connector 104 is aligned with the first threaded hole on the first frame body 101, and then the first bolt is passed through the first threaded connector 104 and screwed into the first frame body 101 to complete the installation. When in use, it is necessary to first assemble according to the above steps, and then drive the rotating module 6 to rotate through the first rotating shaft 4, so that the door frame fixing module 7 can be flipped to complete the process.

[0026] The second mount 3 includes a second mount body 301, an inner wall of the second mount body 301 is fixedly connected with a second transverse reinforcement rib 302, a bottom of the second transverse reinforcement rib 302 is fixedly connected with a second reinforcement rib support plate 303, a second threaded hole is opened on the front of the second mount body 301, an inner wall of the second threaded hole is threadedly connected with a second bolt, the second threaded hole is threadedly connected with a second threaded connector 304 through the second bolt, and a second balancing base 305 is fixedly connected to one side of the second threaded connector 301.

[0027] The second transverse reinforcement rib 302 is welded to the second frame body 301, the second reinforcement rib support plate 303 is welded to the bottom of the second frame body 301 and the bottom of the second transverse reinforcement rib 302, the second threaded connector 304 is integrally connected to the second balance base 305, the second threaded connector 301 is aligned with the second threaded hole on the second frame body 301, and then the second bolt is passed through the second threaded connector 304 and screwed into the second frame body 301 to complete the installation. When in use, it is necessary to assemble according to the above steps, and then the rotating module 6 is driven to rotate by the second rotating shaft 5, so that the door frame fixing module 7 can be flipped to complete the process.

[0028] The stability of the device is increased by providing the first transverse reinforcing rib 102, the first reinforcing rib support plate 103, the second transverse reinforcing rib 302 and the second reinforcing rib support plate 303 in the first frame 1 and the second frame 3 respectively. This ensures that when the door frame enters the device, the device as a whole will not be subjected to great pressure as a result of the heavy door frame, causing the device to disintegrate. This ensures the safety of workers during welding to a great extent, makes workers more assured during welding operations, and ensures the stability of workers' welding work.

[0029] As shown in Figures 5-6, the rotating module 6 includes a rotating rod 601, one end of the rotating rod 601 is fixedly connected to a rotating rod head 602, the surface of the rotating rod head 602 is fixedly connected to a plug-in plate base 603, a third threaded hole is provided on the top of the plug-in plate base 603, the inner wall of the third threaded hole is threadedly connected to a third bolt, the third threaded hole is threadedly connected to a plug-in plate 604 through the third bolt, one side of the plug-in plate 604 is fixedly connected to a shift plate 605, a side of the plug-in plate base 603 is provided with a plug-in plate groove, the plug-in plate groove and the plug-in plate 604 are adapted to each other, a fourth hole is provided on the surface of the rotating rod 601, an insert rod 606 is inserted into the inner wall of the fourth hole, the first hole and the insert rod 606 are adapted to each other, a fourth threaded hole is provided on the other end of the rotating rod 601, the inner wall of the fourth threaded hole is threadedly connected to a threaded base 607.

[0030] The rotating rod head 602 is integrally formed with the rotating rod 601, the plug plate base 603 is welded to the rotating rod head 602, and the plug plate 604 is integrally connected to the dial plate 605. Insert the plug plate 604 into the plug plate base 603, and use the third bolt to screw it into the plug plate base 603, and continue to rotate until it is screwed into the plug plate 604, pass the plug rod 606 through the first hole of the connecting plate 2 and insert it into the fourth hole of the rotating rod 601, and finally screw the threaded base 607 into the fourth threaded hole on the rotating rod 601 to complete the installation.

[0031] When in use, it is necessary to first assemble according to the above steps, then place the rotating rod 601 into the first rotating shaft 4 and the second rotating shaft 5, and install the threaded base 607 on the door frame fixing module 7. When it is necessary to adjust the angle to obtain the ideal welding position, it is only necessary to turn the dial plate 605. Under the joint rotation of the first rotating shaft 4 and the second rotating shaft 5, the rotating module 6 starts to rotate as a whole, thereby driving the door frame fixing module 7 to rotate, so that the worker can obtain the ideal welding position.

[0032] The door frame fixing module 7 includes a first door frame fixing frame 701, a side of the first door frame fixing frame 701 is fixedly connected with a threaded hole base, an inner wall of the threaded hole base is threadedly connected with a fourth bolt, the threaded hole base is threadedly connected with a second door frame fixing frame 702 through the fourth bolt, a bottom of the first door frame fixing frame 701 is fixedly connected with a vertical support rod 703, a front side of the vertical support rod 703 is fixedly connected with a rotating shaft base 704, the rotating shaft base 704 is provided with a rotating shaft hole, a rotating shaft is installed on the inner wall of the rotating shaft hole, and a rotating module 6 is installed on the inner wall of the rotating shaft.

[0033] The threaded hole base is welded to the first door frame fixing frame 701. The second door frame fixing frame 702 is placed on the first door frame fixing frame 701 and aligned with the threaded hole base. The fourth bolt passes through the second door frame fixing frame 702 and is screwed into the threaded hole base. The vertical support rod 703 is integrally connected to the first door frame fixing frame 701. The rotating shaft base 704 is integrally connected to the vertical support rod 703. Finally, the rotating shaft is installed in the rotating shaft hole on the rotating shaft base 704 to complete the installation.

[0034] When in use, it is necessary to assemble according to the above steps, put the assembled rotating shaft base 704 onto the rotating module 6, and then lift the door frame 8 to the middle of the first door frame fixing frame 701 and the second door frame fixing frame 702 to complete the device fixing the door frame, thereby helping workers to weld.

[0035] By installing the rotating module 6 and the door frame fixing module 7, and assembling the rotating module 6 and the door frame fixing module 7, the device can be freely flipped, which allows workers to easily obtain ideal angles and positions, which greatly reduces the workers' welding time. At the same time, workers do not need to climb up ladders to weld some higher parts, so this also avoids the occurrence of safety accidents of workers falling.

[0036] In summary, in the door frame welding fixture, the connecting plate 2 is welded to the first frame 1 and the second frame 3 by welding, the first rotating shaft 4 is installed in the second hole of the first frame 1, the second rotating shaft 5 is installed in the third hole of the second frame 3, the rotating module 6 is installed between the first rotating shaft 4 and the second rotating shaft 5, the door frame fixing module 7 is installed on the rotating module 6, the first transverse reinforcing rib 102 is welded to the inner wall of the first frame body 101, the first reinforcing rib support plate 103 is welded to the bottom of the first transverse reinforcing rib 102 and the bottom of the first frame body 101, The first threaded connector 104 is connected to the first balancing base 105 in one piece. The first threaded connector 104 is aligned with the first threaded hole on the first mounting body 101, and then the first bolt is passed through the first threaded connector 104 and screwed into the first mounting body 101 to complete the installation. The second transverse reinforcing rib 302 is welded to the second mounting body 301, and the second reinforcing rib support plate 303 is welded to the bottom of the second mounting body 301 and the bottom of the second transverse reinforcing rib 302. The second threaded connector 304 is connected to the second balancing base 305 in one piece. The second threaded connector 104 is aligned with the first threaded hole on the first mounting body 101, and then the first bolt is passed through the first threaded connector 104 and screwed into the first mounting body 101 to complete the installation. The second transverse reinforcing rib 302 is welded to the second mounting body 301, and the second reinforcing rib support plate 303 is welded to the bottom of the second mounting body 301 and the bottom of the second transverse reinforcing rib 302. 301 is aligned with the second threaded hole on the second mount body 301, and then the second bolt is passed through the second threaded connector 304 and screwed into the second mount body 301 to complete the installation. The rotating rod head 602 is integrally formed with the rotating rod 601, the plug base 603 is welded on the rotating rod head 602, and the plug plate 604 is integrally connected with the dial plate 605. Insert the plug plate 604 into the plug base 603, and use the third bolt to screw it into the plug base 603, and continue to rotate until it is screwed into the plug plate 604, and insert the plug rod 606 through the first hole of the connecting plate 2 and insert it into the fourth hole of the rotating rod 601 The threaded hole base 607 is welded to the first door frame fixing frame 701, and the second door frame fixing frame 702 is placed on the first door frame fixing frame 701 and aligned with the threaded hole base. The fourth bolt passes through the second door frame fixing frame 702 and is screwed into the threaded hole base. The vertical support rod 703 is integrally connected to the first door frame fixing frame 701, and the rotating shaft base 704 is integrally connected to the vertical support rod 703. Finally, the rotating shaft is installed in the rotating shaft hole on the rotating shaft base 704 to complete the installation.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise one" do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A door frame welding tool, comprising a first frame (1), characterized in that: The back of the first frame (1) is fixedly connected to a connecting plate (2), the top of the connecting plate is provided with a first hole, the first frame (1) is fixedly connected to a second frame (3) via the connecting plate (2), the front of the first frame (1) is provided with a second hole, the inner wall of the second hole is provided with a first rotating shaft (4), the front of the second frame (3) is provided with a third hole, the inner wall of the third hole is provided with a second rotating shaft (5), a rotating module (6) is provided between the first rotating shaft (4) and the second rotating shaft (5), one end of the rotating module (6) is provided with a door frame fixing module (7), the inner wall of the door frame fixing module (7) is provided with a door frame body (8).

2. A door frame welding tool according to claim 1, characterized in that: The first frame (1) comprises a first frame body (101), the inner wall of the first frame body (101) being fixedly connected to a first transverse reinforcing rib (102), and the bottom of the first transverse reinforcing rib (102) being fixedly connected to a first reinforcing rib support plate (103).

3. A door frame welding tool according to claim 2, characterized in that: A first threaded hole is provided on the front of the first frame body (101); a first bolt is threadedly connected to the inner wall of the first threaded hole; a first threaded connector (104) is threadedly connected to the first threaded hole via the first bolt; and a first balancing base (105) is fixedly connected to one side of the first threaded connector (104).

4. A door frame welding tool according to claim 1, characterized in that: The second frame (3) comprises a second frame body (301), the inner wall of the second frame body (301) being fixedly connected to a second transverse reinforcing rib (302), and the bottom of the second transverse reinforcing rib (302) being fixedly connected to a second reinforcing rib support plate (303).

5. A door frame welding tool according to claim 4, characterized in that: A second threaded hole is provided on the front side of the second frame body (301); a second bolt is threadedly connected to the inner wall of the second threaded hole; a second threaded connector (304) is threadedly connected to the second threaded hole via the second bolt; and a second balancing base (305) is fixedly connected to one side of the second threaded connector (301).

6. The door frame welding tool according to claim 1, characterized in that: The rotating module (6) comprises a rotating rod (601), one end of the rotating rod (601) is fixedly connected to a rotating rod head (602), a surface of the rotating rod head (602) is fixedly connected to a plugboard base (603), a third threaded hole is formed at the top of the plugboard base (603), a third bolt is threadedly connected to the inner wall of the third threaded hole, and the third threaded hole is threadedly connected to the plugboard (604) via the third bolt.

7. A door frame welding tool according to claim 6, characterized in that: A shifting plate (605) is fixedly connected to one side of the plugging plate (604), a plugging plate slot is provided on the side of the plugging plate base (603), the plugging plate slot and the plugging plate (604) are adapted to each other, and a fourth hole is provided on the surface of the rotating rod (601).

8. The door frame welding tool according to claim 7, characterized in that: An insertion rod (606) is inserted into the inner wall of the fourth hole, the first hole and the insertion rod (606) are adapted to each other, a fourth threaded hole is formed at the other end of the rotating rod (601), and a threaded base (607) is threadedly connected to the inner wall of the fourth threaded hole.

9. The door frame welding tool according to claim 1, characterized in that: The door frame fixing module (7) comprises a first door frame fixing frame (701), a side surface of the first door frame fixing frame (701) being fixedly connected to a threaded hole base, and an inner wall of the threaded hole base being threadedly connected to a fourth bolt.

10. The door frame welding tool according to claim 1, characterized in that: The threaded hole base is threadedly connected to the second door frame fixing frame (702) via a fourth bolt, the bottom of the first door frame fixing frame (701) is fixedly connected to a vertical support rod (703), the front of the vertical support rod (703) is fixedly connected to a rotating shaft base (704), the rotating shaft base (704) is provided with a rotating shaft hole, the inner wall of the rotating shaft hole is provided with a rotating shaft, and the inner wall of the rotating shaft is provided with a rotating module (6).

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