Y1Z63 series hydraulic wheel brake dismounting and positioning device

Abstract

The utility model relates to the technical field of hydraulic wheel clamp assembly installation, and particularly discloses a Y1Z63 series hydraulic wheel side brake dismounting and positioning device which comprises a supporting mechanism, a clamping mechanism is arranged at the end of the supporting mechanism, and a locking anti-disengaging mechanism is further arranged on the clamping mechanism. The positioning device is easy, convenient, safe and efficient to disassemble and assemble the oil cylinder of the brake, compared with original maintenance and disassembly, the positioning device is designed and manufactured, the disassembly and assembly process is easy, convenient, safe and efficient, high practicability is achieved, three workers are saved each time, and four hours can be saved for each worker; and the device can be changed, modified, replaced and transformed in a plurality of ways according to conditions in the later period, so that the maintenance time is shortened, and the time for putting equipment into production is shortened.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic wheel clamp assembly installation technical field, specifically disclose a Y1Z63 series hydraulic wheel edge brake dismounting and positioning device. BACKGROUND

[0002] The hydraulic wheel edge brake is a device for vehicle braking system, and is mainly used for heavy vehicles such as trucks, trailers and the like. It realizes the braking of the wheel through the hydraulic system, thereby ensuring the safety and stability of the vehicle in the running process.

[0003] The utility model discloses a kind of independent hydraulic wheel edge brakes, including a pair of clamping arms being symmetrically arranged, clamping seat, a pair of brake shoes being symmetrically arranged, oil cylinder being simultaneously articulated with two clamping arms and can drive clamping arm, small hydraulic station for driving oil cylinder action;The clamping seat one end is articulated with a clamping arm, and the clamping seat other end is articulated with another clamping arm;A pair of brake shoes are respectively articulated in the end of a pair of clamping arms;Hydraulic station includes the valve block with oil channel, the valve block is directly attached with oil cylinder butt joint, and the oil channel of valve block is connected with the oil inlet and oil return of oil cylinder butt joint communication.This utility model adopts highly integrated hydraulic drive mode, each independent work, eliminates oil leakage, improves the safety of main machine equipment.Current YLZ63 series hydraulic wheel edge brake is used on bridge crane passive vehicle wheel, windproof braking in working state and auxiliary windproof braking in non-working state.Over a long period of time, wheel clamp assembly disassembly, installation rely on forklift to hold, positioning by manpower drag, there is certain security risk and low work efficiency etc.Problems. Therefore we propose a kind of Y1Z63 series hydraulic wheel edge brake dismounting and positioning device to solve dismounting and positioning. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a kind of Y1Z63 series hydraulic wheel edge brake dismounting and positioning device to solve wheel clamp assembly disassembly, installation rely on forklift to hold, positioning by manpower drag, there is certain security risk and low work efficiency etc.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of Y1Z63 series hydraulic wheel edge brake dismounting and positioning device, including support mechanism, the end of support mechanism is provided with clamping mechanism, clamping mechanism is also provided with locking anti-unclamping mechanism.

[0006] Further, the supporting mechanism comprises a bottom plate 1, two bottom plates in parallel are arranged above the bottom plate 1, the upper end of the bottom plate is provided with a bottom plate 2, the upper and lower ends of the bottom plate are welded and fixed with the upper end of the bottom plate 1 and the lower end of the bottom plate 2 respectively, the upper end of the bottom plate 2 is provided with a supporting arm, one end of the supporting arm is welded on the upper end of the bottom plate 2, the other end of the supporting arm is provided with a rotating arm, and the surface of the rotating arm is inserted into the inside of the supporting arm.

[0007] Further, the clamping mechanism comprises a clamping arm, the clamping arm is in U-shaped structure, the clamping arm comprises a center plate and side plates, the side plates are two, and are welded at two ends of the center plate respectively, one end of the rotating arm is welded and fixed with the center plate of the clamping arm, one side of the side plate is provided with a connecting plate, and the surface of the side plate is sequentially provided with a through hole 1, a through hole 2 and a through hole 3.

[0008] Further, the lower side of the connecting plate is provided with a threaded sleeve, a threaded rod is arranged in the threaded sleeve, the surface of the threaded rod is further provided with the through hole 1, the inside of the threaded rod located on the inner side of the clamping arm is provided with a clamping plate, one end of the clamping plate close to the threaded rod is provided with a bearing, the end of the threaded rod is arranged in interference fit with the inner ring wall of the bearing, and one end of the threaded rod away from the through hole 1 is provided with a twisting knob.

[0009] Further, the inside of the through hole 2 is provided with a limiting rod, and the lower side of the threaded sleeve is provided with a limiting sleeve, the limiting rod and the limiting sleeve are arranged in sliding fit.

[0010] Further, the upper side of the connecting plate is provided with a connecting frame, the connecting frame is arranged in penetrating fit with an inner sleeve 1 at one end of the side plate, the upper end of the side plate is welded and fixed with a threaded column 1, the threaded column 1 is arranged in sliding fit with the inside of the inner sleeve 1, and the end of the threaded column 1 is threadedly connected with a threaded cap 1.

[0011] Further, one end of the connecting frame away from the side plate is arranged in penetrating fit with an inner sleeve 2, the upper end of the connecting plate is welded and fixed with a threaded column 2, the threaded column 2 is arranged in sliding fit with the inside of the inner sleeve 2, and the end of the threaded column 2 is threadedly connected with a threaded cap 2.

[0012] Further, the locking anti-dropping mechanism comprises an anti-dropping rod, the anti-dropping rod is arranged in penetrating fit in the inside of the through hole 3, one end of the anti-dropping rod is welded and fixed with the surface of the clamping plate, and one side of the anti-dropping rod is provided with a plurality of positioning seats.

[0013] The outward side of the side plate is provided with a positioning plate, the inside of the positioning plate is provided with a positioning sleeve, the inside of the positioning sleeve is arranged in sliding fit with a positioning pin, one end of the positioning pin is arranged in sliding fit and butt joint with the inside of the positioning seat, the surface of the positioning pin is wound with a spring, and the two ends of the spring are welded and fixed with the surface of the positioning pin and the surface of the positioning seat respectively.

[0014] The working principle and beneficial effects of the scheme are that: 1. During the dismounting process of the brake oil cylinder, when positioning, the fork head position of the forklift is inserted into the fork loading box, that is, the channel formed by the bottom plate 1, the bottom plate 2 and the two bottom bases, then the rotating arm is inserted into the supporting arm, the positioning is realized, the clamping is synchronous with the supporting arm, the clamping is arranged at the clamping point position on both sides of the brake, the twist knob is rotated first, the twist knob can rotate with the threaded rod, and the threaded rod can be threadedly moved with the threaded sleeve, the advancement or retraction of the clamping plate is realized, the end of the threaded rod is rotatably arranged on the bearing, the horizontal movement of the clamping plate is stable, and the clamping plate cannot rotate synchronously with the threaded rod, the limiting rod slides in the limiting sleeve, the horizontal stable movement of the clamping plate is realized, and the movement of the clamping plate on both sides enables the brake in the clamping to be stably clamped and positioned by the clamping plates on both sides, so that the brake is prevented from tilting during dismounting or mounting of the cylinder body;

[0015] 2. As described in 1, after the clamping plates on both sides are clamped and positioned at the clamping points of the brake, in order to prevent the clamping plates from loosening, a worker can pull the positioning pin with one hand, the positioning pin is separated from the current positioning seat through the stretching effect of the spring, then the twist knob is rotated to operate the threaded rod, after the clamping plates on both sides are attached to the clamping points of the brake, the positioning pin is released, the positioning pin is inserted into the positioning seat at the new position through the reset effect of the spring, the anti-dropping rod slides synchronously in the through hole three along with the clamping plate, after the positioning pin is inserted into the positioning seat at the new position, the clamping plate position is locked and positioned, the spacing of the positioning seats is measured and reserved in advance, so that the clamping and insertion fit are ensured.

[0016] 3. As described in 2, the positioning device is used for dismounting the brake oil cylinder, and is easy, convenient, safe and efficient, compared with the original maintenance dismounting, the positioning device is designed and manufactured, so that the dismounting process is easy, convenient, safe and efficient, has strong practicability, 3 workers are saved at a time, each worker can save 4 hours of time, and the device can be changed, modified, replaced and modified in many ways according to the situation, so that the maintenance time is shortened and the equipment investment production time is accelerated.

[0017] Other advantages, objects and features of the present application will be described in the following description, and will be apparent to those skilled in the art based on the study of the following text, or can be taught from the practice of the present application. The objects and other advantages of the present application can be achieved and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The schematic diagram of the distribution of each mechanism of the embodiment is shown in the figure.

[0019] Figure 2 This is a front view of the overall structure of the embodiment;

[0020] Figure 3 This is a front view of the clamp in the embodiment;

[0021] Figure 4 This is a side view of the clamp in the embodiment;

[0022] Figure 5 This is an enlarged schematic diagram of point A in the embodiment;

[0023] Figure 6 This is an enlarged schematic diagram of point B in the embodiment.

[0024] The following are the markings in the attached diagram: 1. Support mechanism; 2. Clamping mechanism; 3. Locking and anti-detachment mechanism; 10. Base plate one; 11. Base plate two; 12. Base platform; 13. Support arm; 14. Rotating arm; 20. Clamp; 21. Through hole one; 22. Through hole two; 23. Through hole three; 24. Threaded rod; 25. Bearing; 26. Clamping plate; 27. Twist knob; 28. Limiting rod; 29. ​​Limiting sleeve; 210. Connecting plate; 211. Threaded sleeve; 2001. Connecting frame; 2002. Internal sleeve one; 2003. Threaded cap one; 2004. Threaded post one; 2005. Internal sleeve two; 2006. Threaded cap two; 2007. Threaded post two; 30. Anti-detachment rod; 31. Positioning plate; 32. Positioning sleeve; 33. Spring; 34. Positioning pin; 35. Positioning seat. Detailed Implementation

[0025] The following detailed description illustrates the specific implementation method:

[0026] Example

[0027] like Figures 1 to 6 As shown, a Y1Z63 series hydraulic wheel-side brake disassembly and positioning device is disclosed, including a support mechanism 1, a clamping mechanism 2 is provided at the end of the support mechanism 1, and a locking anti-disengagement mechanism 3 is also provided on the clamping mechanism 2.

[0028] The supporting mechanism 1 comprises a bottom plate 1, the upper side of the bottom plate 1 is provided with two bottom plates 12 arranged in parallel, the upper end of the bottom plate 12 is provided with a bottom plate 2, the upper and lower ends of the bottom plate 12 are respectively welded and fixed with the upper end of the bottom plate 1 and the lower end of the bottom plate 2, the bottom plate 1, the bottom plate 2 and the two bottom plates 12 form a base, and the middle part of the base is provided with a channel after being connected, which can be used for the insertion of the fork head of the 3T forklift, so that the base structure forms a forked box structure, the upper end of the bottom plate 2 is provided with a supporting arm 13, one end of the supporting arm 13 is welded to the upper end of the bottom plate 2, the other end of the supporting arm 13 is provided with a rotating arm 14, the surface of the rotating arm 14 is inserted into the inside of the supporting arm 13, the bottom plate 1 and the bottom plate 2 are both made of 300*300mm steel plates, the two bottom plates 12 are both made of 80*300mm steel plates, and the thicknesses of the bottom plate 1, the bottom plate 2 and the two bottom plates 12 are all 10mm, the supporting arm 13 is made of a 60*1200mm thick-wall steel pipe, and the rotating arm 14 is made of a 70*1200mm steel pipe.

[0029] The clamping mechanism 2 comprises a clamping 20, the clamping 20 is a U-shaped structure, and the clamping 20 comprises a center plate and side plates, the side plates are two, and are respectively welded at both ends of the center plate, the center plate is made of a 150*240mm steel plate, the side plates are made of 150*220mm steel plates, and the thicknesses of the center plate and the side plates are both 20mm, one end of the rotating arm 14 is welded and fixed with the center plate of the clamping 20, one side of the side plate is provided with a connecting plate 210, one end of the connecting plate 210 is welded to the outward side of the side plate, the surface of the side plate is sequentially provided with a through hole 1 21, a through hole 2 22 and a through hole 3 23, the through hole 1 21, the through hole 2 22 and the through hole 3 23 are all circular hole structures, the lower side of the connecting plate 210 is provided with a threaded sleeve 211, the outer ring wall upper end of the threaded sleeve 211 is fixedly assembled with the surface of the connecting plate 210 through a support, the inside of the threaded sleeve 211 is provided with a threaded rod 24, the surface of the threaded rod 24 is threadedly connected with the inner ring wall of the threaded sleeve 211, the surface of the threaded rod 24 further penetrates the through hole 1 21, the inside of the threaded rod 24 located at the inner side of the clamping 20 is provided with a clamping plate 26, one end of the clamping plate 26 close to the threaded rod 24 is provided with a bearing 25, one end of the bearing 25 is welded to the surface of the clamping plate 26, the end part of the threaded rod 24 is interference-fitted with the inner ring wall of the bearing 25, one end of the threaded rod 24 away from the through hole 1 21 is provided with a twist knob 27, the end face of the twist knob 27 is welded and fixed with the end part of the threaded rod 24, the outer ring wall of the twist knob 27 is provided with an anti-skid protrusion;

[0030] The limiting rod 28 is arranged through the inside of the via hole two 22, one end of the limiting rod 28 is welded and fixed with the surface of the clamping plate 26, the lower part of the threaded sleeve 211 is provided with a limiting sleeve 29, the limiting rod 28 is arranged in sliding sleeve connection with the limiting sleeve 29, when horizontal movement operation of the clamping plate 26 is needed, the twist knob 27 is first rotated, so that the twist knob 27 can rotate with the threaded rod 24, and the threaded rod 24 can be threadedly moved with the threaded sleeve 211, the advance or retraction of the clamping plate 26 is realized, the end of the threaded rod 24 is arranged in rotation with the bearing 25, the horizontal movement stability of the clamping plate 26 can be ensured, the clamping plate 26 will not rotate synchronously with the threaded rod 24, the horizontal stable movement of the clamping plate 26 can be realized through the sliding of the limiting rod 28 in the limiting sleeve 29, through the movement of the two clamping plates 26, when the brake is in the clamp 20, the two clamping plates 26 can be stably clamped and positioned, so that the side inclination of the brake during disassembly or installation of the cylinder body is avoided;

[0031] The upper part of the connecting plate 210 is provided with a connecting frame 2001, one end of the connecting frame 2001 is attached to the upper end of the side plate, the one end of the connecting frame 2001 located on the side plate is arranged through the built-in sleeve one 2002, the built-in sleeve one 2002 is fixed by welding at the connecting position of the connecting frame 2001, the upper end of the side plate is welded with the threaded column one 2004, the threaded column one 2004 is arranged in sliding through the inside of the built-in sleeve one 2002, the end of the threaded column one 2004 is threadedly connected with the threaded cap one 2003, the lower end of the threaded cap one 2003 is arranged in close contact with the end face of the built-in sleeve one 2002;

[0032] The end of the connecting frame 2001 away from the side plate is arranged through the built-in sleeve two 2005, the built-in sleeve two 2005 is fixed by welding at the connecting position of the connecting frame 2001, the upper end of the connecting plate 210 is welded with the threaded column two 2007, the threaded column two 2007 is arranged in sliding through the inside of the built-in sleeve two 2005, the end of the threaded column two 2007 is threadedly connected with the threaded cap two 2006, the lower end of the threaded cap two 2006 is arranged in close contact with the end face of the built-in sleeve two 2005, through the increase of the connecting frame 2001, when the connecting plate 210 is connected with the side plate, the connecting frame 2001 can play a role of auxiliary connection and reinforcement, the connecting frame 2001 can be assembled and disassembled according to the needs, the built-in sleeve one 2002 and the threaded column one 2004 are arranged in sleeve connection, and then the threaded cap one 2003 and the threaded column one 2004 are threadedly connected, so that the connecting frame 2001 and the side plate can be fastened, the built-in sleeve two 2005 and the threaded column two 2007 are arranged in sleeve connection, and then the threaded cap two 2006 and the threaded column two 2007 are threadedly connected, so that the connecting frame 2001 and the connecting plate 210 can be fastened and installed.

[0033] The locking anti-dropping mechanism 3 comprises an anti-dropping rod 30 arranged through the inside of the through hole three 23, one end of the anti-dropping rod 30 is welded and fixed with the surface of the clamping plate 26, a plurality of positioning seats 35 are arranged on one side of the anti-dropping rod 30, the plurality of positioning seats 35 are arranged in parallel and equidistantly on one side of the anti-dropping rod 30, the positioning seat 35 and the anti-dropping rod 30 can be penetrated through the inside of the through hole three 23, the outward side of the side plate is provided with a positioning plate 31, one end of the positioning plate 31 is welded on the surface of the side plate, the inside of the positioning plate 31 is penetrated and arranged with a positioning sleeve 32, the connecting position of the positioning sleeve 32 and the positioning plate 31 is fixed by welding, the inside of the positioning sleeve 32 is slidably penetrated and arranged with a positioning pin 34, one end of the positioning pin 34 is slidably inserted and connected with the inside of the positioning seat 35, the surface of the positioning pin 34 is wound with a spring 33, the two ends of the spring 33 are respectively welded and fixed with the surface of the positioning pin 34 and the surface of the positioning seat 35, when the clamping plate 26 on one side is moved and adjusted, the worker can pull the positioning pin 34 with one hand, the positioning pin 34 is separated from the current positioning seat 35 through the stretching effect of the spring 33, then the threaded rod 24 is operated by rotating the knob 27, after the clamping plates 26 on both sides are attached to the brake clamping points, the positioning pin 34 is released, the positioning pin 34 is inserted into the positioning seat 35 in the new position through the reset effect of the spring 33, the anti-dropping rod 30 will slide synchronously in the through hole three 23 with the clamping plate 26, after the positioning pin 34 is inserted into the positioning seat 35 in the new position, the locking anti-dropping positioning of the position of the clamping plate 26 can be realized, the spacing of the plurality of positioning seats 35 is measured and reserved in advance to ensure the fitting degree of the fixed point and the insertion connection.

[0034] In specific implementation

[0035] In the process of disassembling the brake oil cylinder, when positioning, the fork head position of the forklift is inserted into the fork loading box, that is, the channel formed by the bottom plate one 10, the bottom plate two 11 and the two bottom plates 12, then the rotating arm 14 is inserted into the supporting arm 13 to realize positioning, so that the clamping 20 can be positioned synchronously with the supporting arm 13, the clamping 20 is arranged at the clamping point position on both sides of the brake, the threaded rod 24 is rotated by rotating the knob 27, so that the knob 27 can be rotated with the threaded rod 24, and the threaded sleeve 211 can be threadedly moved with each other, the advancement or retraction of the clamping plate 26 is realized, the end of the threaded rod 24 is rotatably arranged with the bearing 25, so that the horizontal movement of the clamping plate 26 is stable and will not be rotated synchronously with the threaded rod 24, the horizontal stable movement of the clamping plate 26 is realized by the sliding of the limiting rod 28 in the limiting sleeve 29, the stable clamping and positioning of the brake in the clamping 20 is realized by the movement of the clamping plates 26 on both sides, so that the side inclination of the brake during disassembly or installation of the cylinder body is avoided;

[0036] After the clamping plates 26 on both sides are clamped and positioned at the clamping points of the brake, in order to avoid loosening of the clamping plates 26, the worker can pull the positioning pin 34 with one hand, the positioning pin 34 is separated from the current positioning seat 35 through the stretching effect of the spring 33, then the threaded rod 24 is operated by rotating the twist knob 27, after the clamping plates 26 on both sides are attached to the clamping points of the brake, the positioning pin 34 is released, the positioning pin 34 is inserted into the positioning seat 35 at the new position through the resetting effect of the spring 33, the anti-disengagement rod 30 will slide synchronously with the clamping plates 26 in the through hole 23, after the positioning pin 34 is inserted into the positioning seat 35 at the new position, the locking and anti-disengagement positioning of the clamping plates 26 can be achieved, the spacing of the positioning seats 35 is measured and reserved in advance, so as to ensure the fixed positioning and the fitting degree of the insertion and docking;

[0037] When it is necessary to strengthen the fixation stability of the connecting plate 210 and the side plate of the clamp 20, the connecting frame 2001 is covered on the upper end of the connecting plate 210 and the side plate, at this time, the built-in sleeve one 2002 is slidably sleeved with the threaded column one 2004, the built-in sleeve two 2005 is slidably sleeved with the threaded column two 2007, then the threaded cap one 2003 and the threaded column one 2004 are threadedly connected with each other, and the threaded cap two 2006 and the threaded column two 2007 are threadedly connected with each other, so as to fix the connecting frame 2001 and the connecting plate 210 and the side plate;

[0038] The positioning device is used for disassembling and assembling the oil cylinder of the brake, and is easy, convenient, safe and efficient, compared with the original maintenance and disassembly, the positioning device is designed and manufactured, so that the disassembling and assembling process is easy, convenient, safe and efficient, has strong practicability, saves 3 workers and 4 hours of time of each worker, and the device can be changed, modified, replaced and modified in many ways according to the situation, so that the maintenance time is shortened and the equipment production time is accelerated.

[0039] The above is only an embodiment of the present application, and the specific structure and characteristics of the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicability of the present application.

Claims

1. A Y1Z63 series hydraulic wheel-side brake disassembly and positioning device, characterized in that: The supporting mechanism is provided with a clamping mechanism at the end thereof, and a locking anti-disengagement mechanism is further arranged on the clamping mechanism; The supporting mechanism comprises a bottom plate 1, two bottom plates 2 arranged in parallel above the bottom plate 1, a bottom plate 3 arranged at the upper end of the bottom plate 2, the upper and lower ends of the bottom plate 2 being welded and fixed to the upper end of the bottom plate 1 and the lower end of the bottom plate 3 respectively, a supporting arm arranged at the upper end of the bottom plate 3, one end of the supporting arm being welded to the upper end of the bottom plate 3, and a rotating arm arranged at the other end of the supporting arm, the surface of the rotating arm being inserted into the inside of the supporting arm; The clamping mechanism comprises a clamping arm, the clamping arm being in a U-shaped structure, the clamping arm comprising a center plate and two side plates, the two side plates being welded to the two ends of the center plate respectively, one end of the rotating arm being welded and fixed to the center plate of the clamping arm, one side of the side plate being provided with a connecting plate, and the surface of the side plate being sequentially provided with a through hole 1, a through hole 2 and a through hole 3.

2. The Y1Z63 series hydraulic wheel brake dismounting and positioning device according to claim 1, characterized in that: The lower side of the connecting plate is provided with a threaded sleeve, a threaded rod being arranged in the threaded sleeve, the surface of the threaded rod being further arranged through the through hole 1, the inside of the threaded rod being provided with a clamping plate, one end of the clamping plate close to the threaded rod being provided with a bearing, the end of the threaded rod being arranged in interference fit with the inner ring wall of the bearing, and one end of the threaded rod away from the through hole 1 being provided with a twisting knob.

3. The Y1Z63 series hydraulic wheel brake dismounting and positioning device according to claim 2, characterized in that: The inside of the through hole 2 is provided with a limiting rod, and the lower side of the threaded sleeve is provided with a limiting sleeve, the limiting rod and the limiting sleeve being arranged in sliding fit.

4. The Y1Z63 series hydraulic wheel brake dismounting and positioning device according to claim 3, characterized in that: The upper side of the connecting plate is provided with a connecting frame, the connecting frame being arranged through an inner sleeve 1 at one end of the side plate, a threaded column 1 being welded and fixed to the upper end of the side plate, the threaded column 1 being arranged in sliding fit with the inside of the inner sleeve 1, and the end of the threaded column 1 being threadedly connected with a threaded cap 1.

5. The Y1Z63 series hydraulic wheel brake dismounting and positioning device according to claim 4, characterized in that: One end of the connecting frame away from the side plate is arranged through an inner sleeve 2, a threaded column 2 being welded and fixed to the upper end of the connecting plate, the threaded column 2 being arranged in sliding fit with the inside of the inner sleeve 2, and the end of the threaded column 2 being threadedly connected with a threaded cap 2.

6. The Y1Z63 series hydraulic wheel brake dismounting and positioning device according to claim 5, characterized in that: The locking anti-disengagement mechanism comprises an anti-disengagement rod arranged through the inside of the through hole 3, one end of the anti-disengagement rod being welded and fixed to the surface of the clamping plate, and a plurality of positioning seats being arranged on one side of the anti-disengagement rod; The outward side of the side plate is provided with a positioning plate, the inside of the positioning plate being provided with a positioning sleeve, the inside of the positioning sleeve being arranged in sliding fit with a positioning pin, one end of the positioning pin being arranged in sliding fit and butt joint with the inside of the positioning seat, the surface of the positioning pin being wound with a spring, and the two ends of the spring being welded and fixed to the surface of the positioning pin and the surface of the positioning seat respectively.

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