Novel collecting pipe supporting frame

Abstract

The invention discloses a novel collecting pipe supporting frame, and relates to the technical field of transformer collecting pipe supporting frames, the novel collecting pipe supporting frame comprises a supporting mechanism, the upper portion of the supporting mechanism is fixedly connected with an adjusting mechanism, the surface of the adjusting mechanism is fixedly connected with two fixing mechanisms, and the fixing mechanisms are used for fixing a collecting pipe; and the supporting mechanism is used for supporting the collecting pipe fixed by the fixing mechanism. According to the collecting pipe fixing device, the matched fixing bottom plate and the fixing top plate are selected according to the pipe diameter of a collecting pipe needing to be fixed, the inserting plate is connected with the second mounting frame in an inserted mode, then the first fixing bolts are fixed to the second mounting frame and the inserting plate, then the fixing bottom plate is fixed, and the collecting pipe is placed in the fixing bottom plate; and then the fixing top plate and the fixing bottom plate are fixed through the second fixing bolts, so that collecting pipes with different pipe diameters can be quickly and stably fixed, the collecting pipes are prevented from shaking, the mounting efficiency is improved, and the mounting cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of transformer busbar support frames, in particular to a novel busbar support frame. Background Art

[0002] The transformer manifold is a metal pipe structure used to collect and distribute cooling medium in the transformer. It plays a key role in the cooling system of the transformer. The manifold itself has a certain weight, especially in large transformers, which are large in size and weight. A manifold support frame is needed to support and fix the manifold to avoid deformation and displacement of the manifold due to gravity, which affects the tightness of its connection with other components and the smoothness of the pipeline.

[0003] For example, publication number: CN218351242U discloses "a new type of adjustable structure of a collector bracket of a transformer cooling device", including an adjustment structure, the adjustment structure includes a collector bracket, a screw, an adjustment nut, an adjustable fixing plate, a limit unit and an auxiliary movable unit, and a screw is arranged at the upper end of the collector bracket; adjustment nuts are arranged at both ends of the screw, and an adjustable fixing plate is sleeved on the outer side of the upper end of the screw, a limit unit is arranged at the middle end of the lower side of the adjustable fixing plate, and an auxiliary movable unit is arranged at the lower end of the limit unit, and an end of the auxiliary movable unit away from the limit unit is arranged in the collector bracket.

[0004] However, in the prior art, due to the diversity of manifold diameters, traditional support frames are often designed for specific diameters. When faced with manifolds of other diameters, they cannot be flexibly adjusted according to the actual diameter of the pipeline. When the diameter does not match the designed diameter of the support frame, the pipeline may not fit tightly against the support frame, which may cause the manifold to shake easily during operation. In the actual installation process, when encountering the installation of manifolds of different diameters, it is necessary to replace support frames of different specifications or perform complex modifications to the support frames, which increases the time and labor costs of installation. Summary of the invention

[0005] The purpose of the present invention is to provide a new type of manifold support frame to solve the problem raised in the above background technology that due to the diversity of manifold diameters, traditional support frames are often designed for specific diameters. When faced with manifolds of other diameters, they cannot flexibly make adjustments based on the actual diameter of the pipeline. When the diameter does not match the designed diameter of the support frame, the pipeline may not fit tightly against the support frame, which may cause the manifold to shake easily during operation. In the actual installation operation, when encountering manifolds of different diameters, it is necessary to replace support frames of different specifications or perform complex modifications on the support frames, which increases the time and labor cost of installation.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a new type of manifold support frame, including a wind valve mechanism, including a support mechanism, an adjustment mechanism is fixedly connected to the upper part of the support mechanism, two fixing mechanisms are fixedly connected to the surface of the adjustment mechanism, the fixing mechanism is used to fix the manifold, the support mechanism is used to support the manifold fixed by the fixing mechanism, the adjustment mechanism is used to adjust the distance between the two fixing mechanisms, the fixing mechanism includes a connecting plate and a fixed top plate, a No. 2 slide rail is fixedly connected to the upper part of the connecting plate, a No. 2 slider is slidably connected inside the No. 2 slide rail, a No. 2 mounting frame is fixedly connected to the upper part of the No. 2 slider, a plug plate is plugged inside the No. 2 mounting frame, a damping rod is fixedly connected to the upper part of the plug plate, a spring is arranged outside the damping rod, and a fixing frame is fixedly connected to the upper part of the damping rod, one end of the spring is fixedly connected to the plug plate, and the other end of the spring is fixedly connected to the fixing frame, a fixed bottom plate is fixedly connected to the upper part of the fixing frame, a No. 2 fixing bolt is threadedly connected to the side of the fixed bottom plate, and the fixed top plate is fixedly connected to the fixed bottom plate through the No. 2 fixing bolt.

[0007] Preferably, a No. 2 adjusting screw is rotatably connected inside the No. 2 slide rail, one end of the No. 2 adjusting screw passes through the surface of the No. 2 slide rail, and the No. 2 adjusting screw is threadedly connected to the No. 2 slider.

[0008] Preferably, a No. 1 fixing bolt is threadedly connected to the side surface of the No. 2 mounting frame, and the No. 1 fixing bolt passes through the No. 2 mounting frame and is threadedly connected to the insert plate.

[0009] Preferably, a No. 2 limiting rod is fixedly connected to the upper portion of the plug plate, the No. 2 limiting rod is located on the side of the damping rod, and the No. 2 limiting rod is slidably plugged into the fixing frame.

[0010] Preferably, the supporting mechanism includes a base, a supporting I-beam is fixedly connected to the upper portion of the base, a fixing plate is fixedly connected to the upper portion of the supporting I-beam, a connecting outer tube is fixedly connected to the upper portion of the fixing plate, a connecting inner tube is inserted into the connecting outer tube, and a top support is fixedly connected to the upper portion of the connecting inner tube.

[0011] Preferably, a limiting pin is inserted into the side surface of the connecting outer tube, a plurality of limiting holes are arranged on the surface of the connecting inner tube, and the end of the limiting pin is located inside the limiting hole and is threadedly connected to the connecting inner tube.

[0012] Preferably, the adjustment mechanism includes a No. 1 mounting frame, the bottom of the No. 1 mounting frame is fixedly connected to the top support, one side of the No. 1 mounting frame is rotatably connected to a No. 1 adjusting screw, and the other side of the No. 1 mounting frame is slidably connected to a moving plate, a moving block is fixedly connected to the surface of the moving plate, the moving block is slidably connected to the No. 1 mounting frame, and the No. 1 adjusting screw is threadedly connected to the moving block.

[0013] Preferably, a No. 1 slide rail is fixedly connected to the surface of the No. 1 mounting frame, a No. 1 slide rail is slidably connected to the interior of the No. 1 slide rail, and the No. 1 slide rail is fixedly connected to the movable plate.

[0014] Preferably, two guide grooves are provided on the surface of the movable plate, and the two guide grooves are distributed in an eight-shaped shape on the surface of the movable plate. A No. 1 limit rod is fixedly connected to the surface of the No. 1 mounting frame, and the No. 1 limit rod is located on the side of the No. 1 slide rail, and an adjustment plate is slidably connected to the surface of the No. 1 limit rod, and a guide block is fixedly connected to one side of the adjustment plate, and the guide block is located inside the guide groove and is slidably connected to the movable plate, and the other side of the adjustment plate is fixedly connected to the connecting plate.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, according to the diameter of the manifold to be fixed, an appropriate fixed bottom plate and a fixed top plate are selected, and the plug plate is connected with the No. 2 mounting frame, and then fixed with the No. 1 fixing bolt, the No. 2 mounting frame and the plug plate, and then the fixed bottom plate is fixed, the manifold is placed inside the fixed bottom plate, and then the fixed top plate and the fixed bottom plate are fixed by the No. 2 fixing bolt, so that manifolds with different diameters can be fixed quickly and stably, avoiding shaking of the manifold, improving installation efficiency, and reducing installation costs.

[0016] 2. In the present invention, the No. 2 adjusting screw is rotated to drive the No. 2 sliding block to slide along the No. 2 sliding rail, thereby adjusting the horizontal position of the upper fixed bottom plate, which is convenient for stable and precise adjustment of the manifold in the horizontal direction at the installation position, and the position of the moving block is moved by rotating the No. 1 adjusting screw, thereby driving the moving plate to slide along the surface of the No. 1 mounting frame, and the guide block is driven to move in the vertical direction through the guide groove on the surface of the guide groove, thereby driving the adjustment plate to move, and the distance between the manifolds fixed inside the two fixing mechanisms can be adjusted to avoid the pipe diameter being too large, resulting in the distance between the two manifolds being too small, affecting the assembly operation of the manifold.

[0017] 3. In the present invention, when the manifold is in use and is subjected to external vibration, the damping rod and the spring will produce telescopic deformation, thereby buffering the external vibration, improving the stability of the fixed manifold inside the fixed base plate, and protecting the connection at the same time. When the damping rod and the spring are deformed, the movement of the fixed frame is limited by the second limiting rod, so that the vibration force is fully transmitted along the axial direction of the damping rod and the spring, thereby fully buffering the kinetic energy of the vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional structural schematic diagram of a novel manifold support frame of the present invention; Figure 2It is a schematic diagram of a cross-sectional three-dimensional structure of a new type of manifold support frame connected to an outer tube in the present invention; Figure 3 It is a three-dimensional structural schematic diagram of an adjustment mechanism in a novel manifold support frame of the present invention; Figure 4 It is a three-dimensional structural schematic diagram of a fixing mechanism in a novel manifold support frame of the present invention; Figure 5 It is a structural schematic diagram of a cross-section front view of a fixing mechanism in a novel manifold support frame of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of a movable plate in a novel manifold support frame of the present invention; Figure 7 It is a schematic diagram of the cross-sectional three-dimensional structure of an adjustment plate in a novel manifold support frame of the present invention.

[0019] In the figure: 1. Support mechanism; 11. Base; 12. Support I-beam; 13. Fixing plate; 14. Connecting outer tube; 15. Connecting inner tube; 16. Limiting pin; 17. Top support; 18. Limiting hole; 2. Adjusting mechanism; 21. No. 1 mounting frame; 22. Moving block; 23. No. 1 adjusting screw; 24. Moving plate; 25. Guide groove; 26. No. 1 slide rail; 27. No. 1 slider; 28. No. 1 limiting rod; 29. Adjustment plate; 210. Guide block; 3. Fixing mechanism; 31. Connecting plate; 32. Slide rail No. 2; 33. Sliding block No. 2; 34. Adjusting screw No. 2; 35. Mounting frame No. 2; 36. Insert plate; 37. Fixing bolt No. 1; 38. Damping rod; 39. Spring; 310. Fixing frame; 311. Limiting rod No. 2; 312. Fixed bottom plate; 313. Fixed top plate; 314. Fixed bolt No. 2. DETAILED DESCRIPTION

[0020] 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 implementation regulations described 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.

[0021] Example 1: Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown: a new type of manifold support frame includes a support mechanism 1, an adjustment mechanism 2 is fixedly connected to the upper part of the support mechanism 1, two fixing mechanisms 3 are fixedly connected to the surface of the adjustment mechanism 2, the fixing mechanism 3 is used to fix the manifold, the support mechanism 1 is used to support the manifold fixed by the fixing mechanism 3, the adjustment mechanism 2 is used to adjust the distance between the two fixing mechanisms 3, the fixing mechanism 3 includes a connecting plate 31 and a fixed top plate 313, a second slide rail 32 is fixedly connected to the upper part of the connecting plate 31, a second slide block 33 is slidably connected inside the second slide rail 32, and the upper part of the second slide block 33 A No. 2 mounting frame 35 is fixedly connected, a plug plate 36 is inserted inside the No. 2 mounting frame 35, a damping rod 38 is fixedly connected to the upper part of the plug plate 36, a spring 39 is arranged outside the damping rod 38, and a fixing frame 310 is fixedly connected to the upper part of the damping rod 38, one end of the spring 39 is fixedly connected to the plug plate 36, and the other end of the spring 39 is fixedly connected to the fixing frame 310, a fixing bottom plate 312 is fixedly connected to the upper part of the fixing frame 310, a No. 2 fixing bolt 314 is threadedly connected to the side of the fixing bottom plate 312, and a fixing top plate 313 is fixedly connected to the fixing bottom plate 312 through the No. 2 fixing bolt 314; A No. 2 adjusting screw 34 is rotatably connected inside the No. 2 slide rail 32, one end of the No. 2 adjusting screw 34 passes through the surface of the No. 2 slide rail 32, and the No. 2 adjusting screw 34 is threadedly connected to the No. 2 slider 33, and a No. 1 fixing bolt 37 is threadedly connected to the side of the No. 2 mounting frame 35, and the No. 1 fixing bolt 37 passes through the No. 2 mounting frame 35 and is threadedly connected to the plug plate 36, and a No. 2 limiting rod 311 is fixedly connected to the upper part of the plug plate 36, and the No. 2 limiting rod 311 is located on the side of the damping rod 38, and the No. 2 limiting rod 311 is slidably plugged into the fixing frame 310.

[0022] In this embodiment, according to the diameter of the manifold to be fixed, an adapted fixed bottom plate 312 and a fixed top plate 313 are selected, and the plug plate 36 is plugged with the second mounting frame 35, and then the first fixing bolt 37 is fixed with the second mounting frame 35 and the plug plate 36, and then the fixed bottom plate 312 is fixed, and the manifold is placed inside the fixed bottom plate 312, and then the fixed top plate 313 is fixed with the fixed bottom plate 312 by the second fixing bolt 314, so that manifolds with different diameters can be fixed quickly and stably; When the manifold is in use and is subjected to external vibration, the damping rod 38 and the spring 39 will produce telescopic deformation to buffer the external vibration, improve the stability of the fixed manifold inside the fixed base plate 312, and protect the connection at the same time. When the damping rod 38 and the spring 39 are deformed, the movement of the fixed frame 310 is limited by the second limiting rod 311, so that the vibration force is fully transmitted along the axial direction of the damping rod 38 and the spring 39, thereby fully buffering the kinetic energy of the vibration.

[0023] Embodiment 2: According to Figure 1, Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, The adjusting mechanism 2 includes a No. 1 mounting frame 21, the bottom of the No. 1 mounting frame 21 is fixedly connected to the top support 17, one side of the No. 1 mounting frame 21 is rotatably connected to a No. 1 adjusting screw 23, and the other side of the No. 1 mounting frame 21 is slidably connected to a moving plate 24, the surface of the moving plate 24 is fixedly connected to a moving block 22, the moving block 22 is slidably connected to the No. 1 mounting frame 21, and the No. 1 adjusting screw 23 is threadedly connected to the moving block 22, the surface of the No. 1 mounting frame 21 is fixedly connected to a No. 1 slide rail 26, the interior of the No. 1 slide rail 26 is slidably connected to a No. 1 slider 27, the No. 1 slider 27 is fixedly connected to the moving plate 24, the surface of the moving plate 24 is provided with two guide grooves 25, the two guide grooves 25 are distributed in an eight-shaped shape on the surface of the moving plate 24, the surface of the No. 1 mounting frame 21 is fixedly connected to a No. 1 limit rod 28, and the No. 1 limit rod 28 is positioned at the bottom of the No. 1 mounting frame 21. On the side of the No. 1 slide rail 26, and the surface of the No. 1 limit rod 28 is slidably connected with an adjustment plate 29, one side of the adjustment plate 29 is fixedly connected with a guide block 210, the guide block 210 is located inside the guide groove 25 and is slidably connected to the movable plate 24, and the other side of the adjustment plate 29 is fixedly connected to the connecting plate 31, the supporting mechanism 1 includes a base 11, the upper part of the base 11 is fixedly connected with a supporting I-beam 12, the upper part of the supporting I-beam 12 is fixedly connected with a fixing plate 13, the upper part of the fixing plate 13 is fixedly connected with a connecting outer tube 14, the inner part of the connecting outer tube 14 is plugged with a connecting inner tube 15, the upper part of the connecting inner tube 15 is fixedly connected with a top support 17, the side of the connecting outer tube 14 is plugged with a limiting pin 16, the surface of the connecting inner tube 15 is provided with a plurality of limiting holes 18, the end of the limiting pin 16 is located inside the limiting hole 18 and is threadedly connected to the connecting inner tube 15.

[0024] In this embodiment, before installing the manifold, the second slider 33 is driven to slide along the second slide rail 32 by rotating the second adjusting screw 34, so as to adjust the horizontal position of the upper fixed bottom plate 312, so as to facilitate the stable and accurate adjustment of the manifold in the horizontal direction at the installation position, and the position of the moving block 22 is moved by rotating the first adjusting screw 23, so as to drive the moving plate 24 to slide along the surface of the first mounting frame 21, and drive the guide block 210 to move in the vertical direction through the guide groove 25 on the surface of the guide groove 25, and then drive the adjusting plate 29 to move, so as to adjust the distance between the manifolds fixed in the two fixing mechanisms 3, so as to avoid the excessively large pipe diameter, resulting in the distance between the two manifolds being too small, which affects the assembly operation of the manifold; When the adjusting plate 29 moves, the first limiting rod 28 limits it, thereby improving the stability of the movement of the adjusting plate 29. During the movement of the moving plate 24, the first slider 27 slides along the first slide rail 26 to limit the movement of the moving plate 24, thereby improving the stability of the movement of the moving plate 24. By moving the connecting inner tube 15 up and down along the connecting outer tube 14, the height of the adjusting mechanism 2 and the fixing mechanism 3 can be adjusted, and then the installation height of the manifold can be adjusted. By connecting the connecting outer tube 14 and the connecting inner tube 15 through the limit pin 16, the height of the jacking 17 can be fixed, and then the height of the adjusting mechanism 2 and the fixing mechanism 3 can be fixed.

[0025] The method of use and working principle of the device are as follows: according to the diameter of the manifold to be fixed, the matching fixed bottom plate 312 and fixed top plate 313 are selected, plugged with the second mounting frame 35 through the plug plate 36, and then fixed with the second mounting frame 35 and the plug plate 36 by the first fixing bolt 37, and then fixed with the fixed bottom plate 312, the manifold is placed inside the fixed bottom plate 312, and then the fixed top plate 313 is fixed with the fixed bottom plate 312 by the second fixing bolt 314; When the manifold is in use and subjected to external vibration, the damping rod 38 and the spring 39 will produce telescopic deformation to buffer the external vibration and protect the connection. When the damping rod 38 and the spring 39 are deformed, the second limiting rod 311 is used to limit the movement of the fixing frame 310, so that the vibration force is fully transmitted along the axial direction of the damping rod 38 and the spring 39; Before installing the manifold, the second slider 33 is driven to slide along the second slide rail 32 by rotating the second adjusting screw 34, so as to adjust the horizontal position of the upper fixed bottom plate 312, and the position of the moving block 22 is moved by rotating the first adjusting screw 23, so as to drive the moving plate 24 to slide along the surface of the first mounting frame 21, and drive the guide block 210 to move in the vertical direction through the guide groove 25 on the surface of the guide groove 25, thereby driving the adjusting plate 29 to move, so as to adjust the distance between the manifolds fixed inside the two fixing mechanisms 3; By moving the connecting inner tube 15 up and down along the connecting outer tube 14 , the height of the adjusting mechanism 2 and the fixing mechanism 3 can be adjusted, and then the installation height of the manifold can be adjusted.

[0026] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel manifold support frame, comprising a support mechanism (1), wherein an adjustment mechanism (2) is fixedly connected to the upper portion of the support mechanism (1), wherein two fixing mechanisms (3) are fixedly connected to the surface of the adjustment mechanism (2), wherein the fixing mechanisms (3) are used to fix the manifold, and wherein the support mechanism (1) is used to support the manifold fixed by the fixing mechanisms (3), and wherein: The adjusting mechanism (2) is used to adjust the distance between the two fixing mechanisms (3), the fixing mechanism (3) comprising a connecting plate (31) and a fixed top plate (313), the connecting plate (31) having a second slide rail (32) fixedly connected to the top, the second slide rail (32) having a second slider (33) slidably connected therein, the second slider (33) having a second mounting frame (35) fixedly connected to the top, the second mounting frame (35) having a plug plate (36) plugged therein, the plug plate (36) having a damping rod (38) fixedly connected to the top, A spring (39) is arranged outside the damping rod (38), and a fixing frame (310) is fixedly connected to the upper portion of the damping rod (38), one end of the spring (39) is fixedly connected to the plug plate (36), and the other end of the spring (39) is fixedly connected to the fixing frame (310), a fixing base plate (312) is fixedly connected to the upper portion of the fixing frame (310), a second fixing bolt (314) is threadedly connected to the side surface of the fixing base plate (312), and the fixing top plate (313) is fixedly connected to the fixing base plate (312) via the second fixing bolt (314).

2. A novel manifold support frame according to claim 1, characterized in that: A No. 2 adjusting screw (34) is rotatably connected inside the No. 2 slide rail (32), one end of the No. 2 adjusting screw (34) penetrates the surface of the No. 2 slide rail (32), and the No. 2 adjusting screw (34) is threadedly connected to the No. 2 sliding block (33).

3. A novel manifold support frame according to claim 1, characterized in that: The side surface of the No. 2 mounting frame (35) is threadedly connected to a No. 1 fixing bolt (37), and the No. 1 fixing bolt (37) passes through the No. 2 mounting frame (35) and is threadedly connected to the plug plate (36).

4. A novel manifold support frame according to claim 1, characterized in that: A second limiting rod (311) is fixedly connected to the upper portion of the plug plate (36); the second limiting rod (311) is located on the side of the damping rod (38), and the second limiting rod (311) is slidably plugged into the fixing frame (310).

5. A novel manifold support frame according to claim 1, characterized in that: The support mechanism (1) comprises a base (11), the upper portion of the base (11) being fixedly connected to a supporting I-beam (12), the upper portion of the supporting I-beam (12) being fixedly connected to a fixing plate (13), the upper portion of the fixing plate (13) being fixedly connected to a connecting outer tube (14), the inner portion of the connecting outer tube (14) being plugged with a connecting inner tube (15), and the upper portion of the connecting inner tube (15) being fixedly connected to a jacking support (17).

6. A novel manifold support frame according to claim 5, characterized in that: A limit pin (16) is inserted into the side of the connecting outer tube (14), a plurality of limit holes (18) are provided on the surface of the connecting inner tube (15), and the end of the limit pin (16) is located inside the limit hole (18) and is threadedly connected to the connecting inner tube (15).

7. A novel manifold support frame according to claim 1, characterized in that: The adjustment mechanism (2) comprises a No. 1 mounting frame (21), the bottom of the No. 1 mounting frame (21) is fixedly connected to the top support (17), one side of the No. 1 mounting frame (21) is rotatably connected to a No. 1 adjustment screw (23), and the other side of the No. 1 mounting frame (21) is slidably connected to a moving plate (24), a surface of the moving plate (24) is fixedly connected to a moving block (22), the moving block (22) is slidably connected to the No. 1 mounting frame (21), and the No. 1 adjustment screw (23) is threadedly connected to the moving block (22).

8. A novel manifold support frame according to claim 7, characterized in that: A first slide rail (26) is fixedly connected to the surface of the first mounting frame (21), a first slider (27) is slidably connected inside the first slide rail (26), and the first slider (27) is fixedly connected to the moving plate (24).

9. A novel manifold support frame according to claim 7, characterized in that: The surface of the movable plate (24) is provided with two guide grooves (25), the two guide grooves (25) are distributed in an eight-shaped pattern on the surface of the movable plate (24), the surface of the No. 1 mounting frame (21) is fixedly connected to a No. 1 limit rod (28), the No. 1 limit rod (28) is located on the side of the No. 1 slide rail (26), and the surface of the No. 1 limit rod (28) is slidably connected to an adjustment plate (29), one side of the adjustment plate (29) is fixedly connected to a guide block (210), the guide block (210) is located inside the guide groove (25) and is slidably connected to the movable plate (24), and the other side of the adjustment plate (29) is fixedly connected to a connecting plate (31).

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