Conveying device for PIN detection equipment

Abstract

The conveying device for the PIN detection equipment comprises an adjusting mechanism, a connecting mechanism, a conveying mechanism, a conveying belt and a side frame, after a butt joint sleeve rod is in butt joint with a butt joint hole, a motor is started to drive a gear to rotate, the gear is meshed with a rack, so that a traction ring can autonomously move along a sliding rod, and the conveying mechanism is driven to move along the sliding rod; a plurality of evenly-distributing rings are pulled through a traction ring, due to the fact that a connecting mechanism is arranged between every two adjacent evenly-distributing rings, the evenly-distributing rings can be evenly distributed on a sliding rod, and due to the fact that a butt-joint sleeve rod is in butt joint with a butt-joint hole, the evenly-distributing rings can drive a conveying mechanism to be evenly distributed on a conveying belt. When the device is used, the detection device can be erected on the side frames on the two sides of the conveying belt, the conveying belt can be a circulating conveying belt, and the PIN needles on the conveying mechanism can be conveniently detected by the inserting sleeves which are uniformly distributed at equal intervals. The mechanical gripper is matched with the adjusting mechanism and the conveying mechanism, so that large-scale high-efficiency full-automatic detection of the PINs can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of PIN needle detection equipment, and in particular to a conveying device for PIN needle detection equipment. Background Art

[0002] PIN pins are a kind of metal material used in connectors to complete the transmission of electricity or signals. More and more connectors use PIN pins as signal transmitters. When connectors are produced, PIN pins are mainly automatically inserted by PIN machines. However, existing PIN machines cannot screen out PIN pins within the specifications 100%, and sometimes PIN pins that are not within the specifications are mixed in. The detection of PIN pins mainly relies on manual inspection, and the inspection efficiency is low.

[0003] The Chinese patent with the existing authorization announcement number CN218496021U discloses a PIN needle detection device, including a base, a cover body is fixedly provided on the top of the base, a driving mechanism is fixedly provided on the rear side of the cover body, a lifting plate is fixedly connected to the bottom of the driving mechanism through a connecting block, a plug sleeve is fixedly provided at the bottom of the lifting plate at equal intervals, a door-controlled switch is fixedly provided on the top of the inner cavity of the plug sleeve, and an indicator light is fixedly provided on the front surface of the lifting plate at equal intervals. By setting the driving mechanism, the driving mechanism can control the lifting and lowering of the lifting plate. The driving mechanism controls the lifting and lowering of the lifting plate to control the lifting and lowering of the lifting plate. The top of the qualified PIN needle inserted in the top of the limit sleeve will be inserted into the inner cavity of the plug sleeve and abut against the door-controlled switch. The door-controlled switch will control the indicator light to turn off, indicating that the PIN needle is qualified. When the PIN needle is bent or short and unqualified, the top of the PIN needle will not be inserted into the inner cavity of the plug sleeve and abut against the door-controlled switch, and the indicator light will be always on. The spacing between the pallet and the lifting plate can be adjusted by loosening the locking assembly and moving the support plate up and down, so that PIN needles of different lengths can be detected.

[0004] The shortcomings of the above existing solutions are: sockets are fixed at equal intervals at the bottom of the lifting plate, the PIN needles are detected by the sockets, and the PIN needles are matched one by one with the sockets set at equal intervals by setting a detection base, which limits the detection scene and is not conducive to improving the detection efficiency of the PIN needles. Summary of the invention

[0005] The object of the present invention is to provide a conveying device for a PIN needle detection device, so as to solve the technical problem in the prior art that the detection scene is limited, which is not conducive to improving the detection efficiency of the PIN needle.

[0006] The technical problem to be solved by the present invention can be achieved by the following technical solutions:

[0007] A conveying device for a PIN needle detection device, comprising:

[0008] The adjusting mechanism comprises a symmetrically distributed mechanism mounting plate, the mechanism mounting plate is fixedly connected with a mechanism side plate, a sliding rod is fixedly connected between the symmetrically distributed mechanism side plates, an equilibrating ring is movably sleeved and evenly distributed on the sliding rod, a traction ring for traction of the equilibrating ring is arranged on one side of several equilibrating rings, a fixing ring is arranged on the other side of several equilibrating rings, the fixing ring is fixedly connected with the mechanism side plate on one side, the traction ring and the fixing ring are sleeved on the sliding rod, a docking block is fixedly connected with the equilibrating ring, a docking hole is opened on the docking block, an equilibrating connecting end is fixedly connected with the lower end of the equilibrating ring, a spacer rod is arranged on the equilibrating connecting end, one end of the spacer rod is fixedly connected with the equilibrating connecting end, the other end of the spacer rod is abutted with the equilibrating connecting end of the adjacent equilibrating ring, a horizontally arranged connecting plate is fixedly connected to the side end surface of the equilibrating connecting end, and a connecting mechanism is arranged between two adjacent connecting plates;

[0009] The conveying mechanism comprises a conveying base, the upper end of the conveying base is fixedly connected to a conveying bottom plate, the conveying bottom plate is fixedly connected to a cylinder, the driving end of the cylinder is fixedly connected to a telescopic rod, the telescopic rod is fixedly connected to a docking sleeve rod, the docking sleeve rod is sleeved in a docking hole on a docking block, a lifting frame is fixedly connected to the conveying bottom plate, the lifting frame is fixedly connected to a conveying mounting plate, the conveying mounting plate is fixedly connected to a limiting plate, and a limiting groove for installing a PIN needle is provided on the limiting plate;

[0010] Conveyor belt, both ends of the conveyor belt are provided with side frames, the conveyor belt is fixedly installed on the side frames, the conveyor belt is provided with a plurality of conveying mechanisms, the conveying mechanisms correspond to the averaging rings on the slide bars of the adjusting mechanisms one by one, the conveying base is provided between the two side frames, the conveyor belt is provided on one side of the adjusting mechanism, and the conveyor belt and the slide bar are provided in parallel.

[0011] As a further solution of the present invention: a rack groove is opened along the length direction of the sliding rod, a rack is fixedly connected in the rack groove, a gear groove is opened through the side end face of the traction ring, a motor mounting plate is fixedly connected to the traction ring, the motor mounting plate is arranged at the notch of the gear groove, and a motor is embedded and fixedly connected to the motor mounting plate.

[0012] As a further solution of the present invention: a driving shaft is coaxially fixedly connected to the driving end of the motor, a gear is coaxially fixedly connected to the driving shaft, and the gear is meshed with the rack.

[0013] As a further solution of the present invention: a traction connection end is fixedly connected to the lower end of the traction ring, and a connecting rod 2 is fixedly connected between the traction connection end and the nearest equal-dividing connection end of the equal-dividing ring.

[0014] As a further solution of the present invention: a fixed connection end is fixedly connected to the lower end of the fixed ring, and a connecting rod 1 is fixedly connected between the fixed connection end and the equalizing connection end of the nearest equalizing ring.

[0015] As a further solution of the present invention: two mounting through holes are respectively provided on the connecting plate.

[0016] As a further solution of the present invention: the connecting mechanism includes an equally-divided connecting rope, one end of the equally-divided connecting rope is fixedly connected to a socket block 1, and an anti-slip block is fixedly connected to the socket block 1, and the other end of the equally-divided connecting rope is fixedly connected to a socket block 2, and an anti-slip screw is threadedly connected to the socket block 2, and a threaded hole is opened on the socket block 2, and the anti-slip screw is threadedly connected to the threaded hole on the socket block 2.

[0017] As a further solution of the present invention: one sleeve block is set in the mounting through hole of the connecting plate of the equally divided connecting end on one side, and the second sleeve block is set in the mounting through hole of the connecting plate of the equally divided connecting end on the other side.

[0018] Beneficial effects of the present invention:

[0019] 1. When the present invention is in use, the PIN pins are placed one by one in the limit grooves of the conveying mechanism on the conveyor belt by a mechanical gripper. Under the blocking of the baffle, a plurality of conveying mechanisms are arranged on the conveyor belt. A spacing rod is provided between two adjacent equally divided connecting ends. By providing the spacing rod, the distance between the plurality of equally divided rings corresponds to the width of the conveying mechanism, so that the docking sleeve rod and the docking hole on the docking block are automatically docked, and the degree of automation of the device is improved. After the docking sleeve rod is docked with the docking hole, the motor is started to drive the gear to rotate, and the gear and the rack are meshed, so that the traction ring can move autonomously along the slide rod, and the traction ring can move autonomously along the slide rod. Pulling several equalizing rings through the traction ring, since there are connection mechanisms between adjacent equalizing rings, several equalizing rings can be evenly distributed on the slide bar. Since the docking sleeve rod and the docking hole are connected, the equalizing ring can drive the conveying mechanism to be evenly distributed on the conveyor belt, so that the plug sleeves evenly distributed at equal intervals can simultaneously detect the PIN needles on the conveying mechanism. When the device is in use, the detection device can be set up on the side frames on both sides of the conveyor belt. The conveyor belt can be a circulating conveyor belt. The mechanical gripper can cooperate with the adjustment mechanism and the conveying mechanism to realize large-scale, high-efficiency and fully automatic detection of PIN needles.

[0020] 2. The present invention has one sleeve block set in the mounting through hole of the connecting plate at the equally-divided connecting end on one side, and the second sleeve block is set in the mounting through hole of the connecting plate at the equally-divided connecting end on the other side. When in use, the anti-slip screw on the second sleeve block is unscrewed, the second sleeve block is passed through the mounting through hole of the connecting plate on one side, and the equally-divided connecting rope is passed through the mounting through hole on this side and the first sleeve block is set in the mounting through hole on this side, and then the second sleeve block is set in the mounting through hole of the connecting plate on the other side, and the anti-slip screw is screwed on to complete the installation of the connecting mechanism on the connecting plate. The anti-slip screw is provided to facilitate the disassembly and assembly of the connecting mechanism. The connecting mechanism can pre-customize equally-divided connecting ropes of different lengths, so that the device is easy to adapt to different types of detection equipment, thereby improving the applicability and versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 The three-dimensional structure of the present invention is shown in FIG. Figure 1 ;

[0023] Figure 2 The three-dimensional structure of the present invention is shown in FIG. Figure 2 ;

[0024] Figure 3 The present invention Figure 2 The enlarged structural diagram at A in the middle;

[0025] Figure 4 This is a schematic diagram of the partial structure of the adjustment mechanism of the present invention. Figure 1 ;

[0026] Figure 5 It is a schematic diagram of the three-dimensional structure of the adjustment mechanism of the present invention;

[0027] Figure 6 The present invention Figure 5 The enlarged structural diagram at B in the middle;

[0028] Figure 7 This is a schematic diagram of the partial structure of the adjustment mechanism of the present invention. Figure 2 ;

[0029] Figure 8 It is a schematic diagram of the three-dimensional structure of the conveying mechanism of the present invention;

[0030] Fig. 9 It is a three-dimensional structural schematic diagram of the connecting mechanism of the present invention.

[0031] In the figure: 1, adjustment mechanism; 11, mechanism mounting plate; 12, mechanism side plate; 13, slide bar; 14, traction ring; 15, fixed ring; 16, fixed connection end; 17, connecting rod 1; 18, equalizing ring; 19, docking block; 110, docking hole; 111, equalizing connection end; 112, traction connection end; 113, connecting rod 2; 114, rack groove; 115, rack; 116, motor mounting plate; 117, motor; 118, gear; 1 19. Spacer rod; 120. Connecting plate; 121. Mounting through hole; 2. Connecting mechanism; 21. Equally divided connecting rope; 22. Socket block 1; 23. Anti-slip block; 24. Socket block 2; 25. Anti-slip screw; 3. Conveying mechanism; 31. Conveying base; 32. Conveying bottom plate; 33. Cylinder; 34. Telescopic rod; 35. Docking sleeve rod; 36. Lifting frame; 37. Conveying mounting plate; 38. Limiting plate; 39. Limiting groove; 4. Conveyor belt; 5. Side frame. DETAILED DESCRIPTION

[0032] 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.

[0033] like Figure 1-Figure 9 As shown, a conveying device for a PIN needle detection device comprises:

[0034] The adjusting mechanism 1 comprises symmetrically distributed mechanism mounting plates 11, each of which is fixedly connected to a mechanism side plate 12, and a slide bar 13 is fixedly connected between the symmetrically distributed mechanism side plates 12. An equilibrating ring 18 is movably sleeved and evenly distributed on the slide bar 13, and a traction ring 14 for traction of the equilibrating ring 18 is arranged on one side of a plurality of equilibrating rings 18, and a fixing ring 15 is arranged on the other side of a plurality of equilibrating rings 18, and the fixing ring 15 is fixedly connected to one side of the mechanism side plate 12, and the traction ring 14 and the fixing ring 15 are sleeved on the slide bar 13. A docking block 19 is fixedly connected to the averaging ring 18, and a docking hole 110 is opened on the docking block 19. An averaging connection end 111 is fixedly connected to the lower end of the averaging ring 18, and a spacing rod 119 is arranged on the averaging connection end 111. One end of the spacing rod 119 is fixedly connected to the averaging connection end 111, and the other end of the spacing rod 119 abuts against the averaging connection end 111 of the adjacent averaging ring 18. A horizontally arranged connecting plate 120 is fixedly connected to the side end surface of the averaging connection end 111, and a connecting mechanism 2 is arranged between two adjacent connecting plates 120;

[0035] The conveying mechanism 3 includes a conveying base 31, a conveying bottom plate 32 is fixedly connected to the upper end of the conveying base 31, a cylinder 33 is fixedly connected to the conveying bottom plate 32, a telescopic rod 34 is fixedly connected to the driving end of the cylinder 33, a docking sleeve rod 35 is fixedly connected to the telescopic rod 34, the docking sleeve rod 35 is sleeved in the docking hole 110 on the docking block 19, a lifting frame 36 is fixedly connected to the conveying bottom plate 32, a conveying installation plate 37 is fixedly connected to the lifting frame 36, a limiting plate 38 is fixedly connected to the conveying installation plate 37, and a limiting groove 39 for installing a PIN needle is opened on the limiting plate 38;

[0036] A conveyor belt 4 is provided with side frames 5 at both ends of the conveyor belt 4, the conveyor belt 4 is fixedly mounted on the side frames 5, the conveyor belt 4 is provided with a plurality of conveying mechanisms 3, the conveying mechanisms 3 correspond one to one with the averaging rings 18 on the slide bar 13 of the adjustment mechanism 1, the conveying base 31 is provided between the two side frames 5, the conveyor belt 4 is provided on one side of the adjustment mechanism 1, and the conveyor belt 4 is provided in parallel with the slide bar 13.

[0037] A rack groove 114 is opened along the length direction of the slide rod 13, and a rack 115 is fixedly connected in the rack groove 114. A gear through groove is opened on the side end surface of the traction ring 14, and a motor mounting plate 116 is fixedly connected to the traction ring 14. The motor mounting plate 116 is arranged at the notch of the gear through groove, and a motor 117 is embedded and fixedly connected on the motor mounting plate 116. A driving shaft is coaxially fixedly connected to the driving end of the motor 117, and a gear 118 is coaxially fixedly connected to the driving shaft. The gear 118 is meshed with the rack 115. A traction connection end 112 is fixedly connected to the lower end of the traction ring 14, and a connecting rod 2 113 is fixedly connected between the traction connection end 112 and the nearest equalizing connection end 111 of the equalizing ring 18.

[0038] A fixed connection end 16 is fixedly connected to the lower end of the fixed ring 15 , and a connecting rod 17 is fixedly connected between the fixed connection end 16 and the nearest equal-dividing connection end 111 of the equal-dividing ring 18 .

[0039] In some specific implementation schemes, two mounting through holes 121 are respectively provided on the connecting plate 120 .

[0040] The connecting mechanism 2 includes an equally-divided connecting rope 21, one end of which is fixedly connected to a socket block 22, and an anti-slip block 23 is fixedly connected to the socket block 22, and the other end of the equally-divided connecting rope 21 is fixedly connected to a socket block 24, and an anti-slip screw 25 is threadedly connected to the socket block 24, and a threaded hole is opened on the socket block 24, and the anti-slip screw 25 is threadedly connected to the threaded hole on the socket block 24.

[0041] The first sleeve block 22 is sleeved in the mounting through hole 121 of the connection plate 120 that evenly divides the connection end 111 on one side, and the second sleeve block 24 is sleeved in the mounting through hole 121 of the connection plate 120 that evenly divides the connection end 111 on the other side.

[0042] In some specific embodiments, a baffle (not shown in the figure) for blocking the conveying mechanism 3 is fixedly connected to the side frame 5 .

[0043] In order to facilitate the understanding of the embodiments of this solution by those skilled in the art, the working principle of this solution is briefly described in combination with specific application scenarios:

[0044] When in use, the PIN pins are placed one by one in the limit grooves 39 of the conveying mechanism 3 on the conveyor belt 4 by a mechanical gripper. Under the obstruction of the baffle, a plurality of conveying mechanisms 3 are arranged on the conveyor belt 4. A spacing rod 119 is provided between two adjacent equal-dividing connection ends 111. By providing the spacing rod 119, the distance between the plurality of equal-dividing rings 18 corresponds to the width of the conveying mechanism 3, so that the docking sleeve rod 35 and the docking hole 110 on the docking block 19 are automatically docked, thereby improving the degree of automation of the device. When the docking sleeve rod 35 is docked with the docking hole 110, the motor 117 is started to drive The gear 118 rotates, and the gear 118 meshes with the rack 115, so that the traction ring 14 can move autonomously along the slide bar 13, and the traction ring 14 pulls a plurality of averaging rings 18. Since the connecting mechanism 2 is provided between adjacent averaging rings 18, the plurality of averaging rings 18 can be evenly distributed on the slide bar 13. Since the docking sleeve rod 35 is connected to the docking hole 110, the averaging ring 18 can drive the conveying mechanism 3 to be evenly distributed on the conveying belt 4, so that the equally spaced and evenly distributed plug sleeves can simultaneously detect the PIN pins on the conveying mechanism 3. When in use, the detection device can be set up on the side frames 5 on both sides of the conveyor belt 4. The conveyor belt 4 can be a circulating conveyor belt. Through the mechanical gripper, in cooperation with the adjustment mechanism 1 and the conveying mechanism 3, a large number of high-efficiency and fully automatic detection of PIN needles can be achieved. The sleeve block 1 22 is sleeved in the mounting through hole 121 of the connecting plate 120 of the evenly divided connecting end 111 on one side, and the sleeve block 24 is sleeved in the mounting through hole 121 of the connecting plate 120 of the evenly divided connecting end 111 on the other side. When in use, the anti-slip screw 25 on the sleeve block 24 is unscrewed, and the sleeve block 24 is passed through the connecting plate on one side. The mounting hole 121 of 120, at the same time, the evenly-dividing connecting rope 21 is passed through the mounting hole 121 on this side and the sleeve block 1 22 is sleeved in the mounting hole 121 on this side, and then the sleeve block 24 is sleeved in the mounting hole 121 of the connecting plate 120 on the other side, and then the anti-detachment screw 25 is screwed on to complete the installation of the connecting mechanism 2 on the connecting plate 120. By setting the anti-detachment screw 25, the disassembly and assembly of the connecting mechanism 2 are facilitated. The connecting mechanism 2 can be pre-customized with evenly-dividing connecting ropes 21 of different lengths, so that the device is easy to adapt to different types of detection equipment, thereby improving the applicability and versatility of the device.

[0045] Several embodiments of the present invention are described in detail above, but the embodiments of the present invention are not limited thereto and cannot be considered to limit the scope of implementation of the present invention. All equivalent changes and improvements made within the scope of the present invention should still fall within the scope of the patent coverage of the present invention.

Claims

1. A conveying device for a PIN needle detection device, characterized in that: include: The adjusting mechanism (1) comprises a symmetrically distributed mechanism mounting plate (11), each of which is fixedly connected to a mechanism side plate (12), a sliding rod (13) being fixedly connected between the symmetrically distributed mechanism side plates (12), an equilibrating ring (18) being movably sleeved and evenly distributed on the sliding rod (13), a traction ring (14) for traction of the equilibrating ring (18) being arranged on one side of a plurality of the equilibrating rings (18), a fixing ring (15) being arranged on the other side of a plurality of the equilibrating rings (18), the fixing ring (15) being fixedly connected to the mechanism side plate (12) on one side, the traction ring (14) and the fixing ring (15) being sleeved on the sliding rod (13) The balancing ring (18) is fixedly connected with a docking block (19), a docking hole (110) is provided on the docking block (19), a balancing connection end (111) is fixedly connected to the lower end of the balancing ring (18), a spacing rod (119) is provided on the balancing connection end (111), one end of the spacing rod (119) is fixedly connected to the balancing connection end (111), and the other end of the spacing rod (119) is in contact with the balancing connection end (111) of the adjacent balancing ring (18), a horizontally arranged connection plate (120) is fixedly connected to the side end surface of the balancing connection end (111), and a connection mechanism (2) is provided between two adjacent connection plates (120); The conveying mechanism (3) comprises a conveying base (31), the upper end of the conveying base (31) is fixedly connected to a conveying bottom plate (32), the conveying bottom plate (32) is fixedly connected to a cylinder (33), the driving end of the cylinder (33) is fixedly connected to a telescopic rod (34), the telescopic rod (34) is fixedly connected to a docking sleeve rod (35), the docking sleeve rod (35) is sleeved in a docking hole (110) on a docking block (19), the conveying bottom plate (32) is fixedly connected to a lifting frame (36), the lifting frame (36) is fixedly connected to a conveying installation plate (37), the conveying installation plate (37) is fixedly connected to a limiting plate (38), and the limiting plate (38) is provided with a limiting groove (39) for installing a PIN needle; A conveyor belt (4) is provided with side frames (5) at both ends of the conveyor belt (4), the conveyor belt (4) is fixedly mounted on the side frames (5), the conveyor belt (4) is provided with a plurality of conveying mechanisms (3), the conveying mechanisms (3) correspond one to one with the equalizing rings (18) on the slide bar (13) of the adjustment mechanism (1), a conveying base (31) is provided between the two side frames (5), the conveyor belt (4) is provided on one side of the adjustment mechanism (1), and the conveyor belt (4) and the slide bar (13) are provided in parallel.

2. A conveying device for a PIN needle detection device according to claim 1, characterized in that: A rack groove (114) is provided along the length direction of the slide bar (13), a rack (115) is fixedly connected in the rack groove (114), a gear groove is provided through the side end surface of the traction ring (14), a motor mounting plate (116) is fixedly connected to the traction ring (14), the motor mounting plate (116) is arranged at the notch of the gear groove, and a motor (117) is embedded and fixedly connected to the motor mounting plate (116).

3. A conveying device for a PIN needle detection device according to claim 2, characterized in that: A driving shaft is coaxially fixedly connected to the driving end of the motor (117), a gear (118) is coaxially fixedly connected to the driving shaft, and the gear (118) is meshed with the rack (115).

4. A conveying device for a PIN needle detection device according to claim 1, characterized in that: The lower end of the traction ring (14) is fixedly connected with a traction connection end (112), and a second connection rod (113) is fixedly connected between the traction connection end (112) and the nearest balancing connection end (111) of the balancing ring (18).

5. A conveying device for a PIN needle detection device according to claim 1, characterized in that: The lower end of the fixed ring (15) is fixedly connected to a fixed connection end (16), and a connecting rod 1 (17) is fixedly connected between the fixed connection end (16) and the equalizing connection end (111) of the nearest equalizing ring (18).

6. A conveying device for a PIN needle detection device according to claim 1, characterized in that: Two mounting through holes (121) are respectively formed on the connecting plate (120).

7. A conveying device for a PIN needle detection device according to claim 1, characterized in that: The connection mechanism (2) comprises an evenly distributed connection rope (21), one end of the evenly distributed connection rope (21) is fixedly connected to a first sleeve block (22), the first sleeve block (22) is fixedly connected to an anti-slip block (23), the other end of the evenly distributed connection rope (21) is fixedly connected to a second sleeve block (24), the second sleeve block (24) is threadedly connected to an anti-slip screw (25), the second sleeve block (24) is provided with a threaded hole, and the anti-slip screw (25) is threadedly connected to the threaded hole on the second sleeve block (24).

8. A conveying device for a PIN needle detection device according to claim 1, characterized in that: The sleeve block 1 (22) is sleeved in the mounting through hole (121) of the connection plate (120) of the evenly divided connection end (111) on one side, and the sleeve block 2 (24) is sleeved in the mounting through hole (121) of the connection plate (120) of the evenly divided connection end (111) on the other side.

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