Anti-falling slip stopper

Abstract

The utility model discloses an anti-falling slip stopper, and belongs to the technical field of rope safety devices. An anti-falling slip stopper comprises a rope wheel assembly, a first wheel plate and a second wheel plate. The rope wheel assembly is rotationally arranged between the first wheel plate and the second wheel plate; the rope wheel assembly comprises a rope grabbing wheel, a plurality of flail blocks, a plurality of tension springs and a rope wheel center shaft. The rope grabbing wheel is rotationally arranged between the first wheel plate and the second wheel plate through a rope wheel center shaft. One side of the rope grabbing wheel is sealed, and the other side of the rope grabbing wheel is covered with a wheel cover; a tubular column and a plurality of limiting blocks are fixedly arranged on the inner side wall of a sealing opening of the rope grabbing wheel, and the limiting blocks are fixedly arranged on the periphery of the tubular column at intervals; the rope wheel central shaft penetrates through the tubular column; one end of the throwing block is embedded in the limiting block; through the arrangement, locking of the anti-slip device is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of rope safety device, more specifically, relate to a kind of anti-falling slide stopper. BACKGROUND

[0002] The slide stopper is an important equipment applied in aerial work and climbing activities, which mainly prevents the worker or equipment from falling in the case of accident by friction with the rope during use, thereby ensuring safety. The conventional anti-falling slide stopper has a complex structure and is cumbersome to operate, which is not convenient for quick unlocking or locking, and is prone to skidding during the grabbing process with the rope, thereby reducing safety. To solve this problem, a slide stopper with efficient anti-falling, sliding and convenient locking functions is needed, which can enhance the convenience and safety of operation and ensure the stability and reliability of the anti-falling device in aerial work. SUMMARY

[0003] The technical problem to be solved by the utility model is to provide an anti-falling slide stopper which can be conveniently locked.

[0004] The anti-falling slide stopper of the utility model comprises a rope wheel assembly, a first wheel plate and a second wheel plate. The rope wheel assembly is rotatably arranged between the first wheel plate and the second wheel plate. The rope wheel assembly comprises a rope grabbing wheel, a plurality of flippers, a plurality of tension springs and a rope wheel central shaft. The rope grabbing wheel is rotatably arranged between the first wheel plate and the second wheel plate by the rope wheel central shaft.

[0005] One side of the rope grabbing wheel is sealed, and the other side of the rope grabbing wheel is covered with a wheel cover. A tube column and a plurality of limiting blocks are fixedly arranged on the inner side wall of the seal of the rope grabbing wheel. The limiting blocks are fixedly arranged at intervals on the outer periphery of the tube column. The rope wheel central shaft penetrates the tube column. One end of the flipper is embedded in the limiting block.

[0006] As a further improvement of the utility model, the limiting blocks are arranged in a curved manner. The flippers are embedded in the curved portions of the limiting blocks. First hanging holes are fixedly arranged on the outer side walls of the limiting blocks away from the flippers. Second hanging holes are fixedly arranged on the side walls of the flippers away from the limiting blocks. Tension springs are installed between the first hanging holes and the corresponding second hanging holes. One end of the tension spring is connected with the first hanging hole, and the other end of the tension spring is connected with the second hanging hole. Flipper gaskets are arranged on the top of the flippers, and the flipper gaskets are sleeved on the outer periphery of the tube column.

[0007] As a further improvement of the utility model, it further comprises a first fixed side plate, a second fixed side plate and a rope wheel shell. The second fixed side plate is installed on the outer side wall of the first wheel plate, and the first fixed side plate is installed on the outer side wall of the second wheel plate. The rope wheel shell is installed between the first wheel plate and the second wheel plate and is half-wrapped around the outer periphery of the rope grabbing wheel. A plurality of ratchets are fixedly arranged on the outer periphery of the rope grabbing wheel, and the ratchets are uniformly distributed on the outer periphery of the rope grabbing wheel.

[0008] As a further improvement of the utility model, still include rope wheel switch, rope wheel switch includes outer cover and linkage assembly, outer cover is connected with linkage assembly, outer cover is installed on the outer side wall of second fixed side plate, linkage assembly is installed between wheel cover and flinger gasket, linkage assembly includes first linkage block, first linkage column and first switch pivot, first linkage column and first switch pivot are fixedly arranged on the top of first linkage block, first linkage column and first switch pivot are arranged at intervals, the outer periphery of first switch pivot is provided with first torsional spring, one end of first linkage column away from first linkage block is sequentially embedded in outer cover through wheel cover, first wheel plate and second fixed side plate.

[0009] As a further improvement of the utility model, the first through hole is arranged on the wheel cover, the fourth sliding slot is arranged on the first wheel plate, the first recess is arranged on the second fixed side plate, the third sliding slot is arranged in the first recess, the protrusion is arranged on the side of the outer cover facing the second fixed side plate, one end of the first linkage column away from the first linkage block is sequentially embedded in the protrusion of the outer cover through the first through hole, the fourth sliding slot and the third sliding slot.

[0010] The second recess is arranged on the side of the second fixed side plate away from the first wheel plate, the first ball head is slidably arranged in the second recess, the first plunger is arranged on the top of the first ball head away from the second fixed side plate, the first ball head is rotatably embedded in the bottom of the first plunger, the top of the first plunger is embedded in the side of the outer cover facing the second fixed side plate, and the opening and closing of the rope wheel switch is controlled by rotating the outer cover.

[0011] As a further improvement of the utility model, the protrusion is arranged in an arc shape.

[0012] As a further improvement of the utility model, the friction block is arranged on the side wall of the first fixed side plate, and is arranged on the same side of the rope wheel assembly; the moving side plate is slidably arranged on the side of the friction block away from the first fixed side plate; the second sliding slot and the first sliding slot are arranged on the upper and lower ends of the moving side plate; the second fixed rivet is slidably arranged in the second sliding slot, and the first fixed rivet is slidably arranged in the first sliding slot; the second fixed rivet is sequentially embedded in the second sliding slot, the friction block and the first fixed side plate to connect the moving side plate, the friction block and the first fixed side plate; the first fixed rivet is sequentially embedded in the first sliding slot, the friction block and the first fixed side plate to connect the moving side plate, the friction block and the first fixed side plate.

[0013] As a further improvement of the utility model, the side plate switch is rotatably arranged on the outer side wall of the second fixed side plate away from the first wheel plate; one end of the side plate switch is rotatably connected with the second fixed side plate, and the other end of the side plate switch is detachably connected with the second fixed rivet.

[0014] As a further improvement of the utility model, further comprising a ring, the ring is sleeved on the outer periphery of the limiting block, and the inner side wall of the wheel cover is arranged in abutment.

[0015] As a further improvement of the utility model, further comprising a switch assembly; the mobile side plate is provided with a first jack; the friction block is provided with a second slot on the side facing the mobile side plate; the switch assembly penetrates the first jack of the mobile side plate and is slidably embedded in the second slot of the friction block.

[0016] The switch assembly comprises a button, a receiving seat, a cross rod and a second spring; the receiving seat is provided with a first through hole; two second through holes are provided on the two sides of the receiving seat respectively, and the two second through holes are oppositely arranged; the two ends of the cross rod are respectively penetrated through the corresponding second through holes and arranged in the first through hole; the lower end of the button is provided with a third groove; the lower end of the button is embedded in the first through hole, and the third groove is slidably covered on the outer periphery of the cross rod; the second spring is embedded in the first through hole and abuts against the lower end of the button; one end of the second spring, which is away from the button, is arranged in abutment with the bottom of the second slot.

[0017] The switch assembly further comprises a limiting column; a second limiting slot is formed on the outer peripheral side wall of the receiving seat; one end of the limiting column is slidably embedded in the second limiting slot, and the other end of the limiting column is sequentially penetrated through the side wall of the second slot and the friction block and connected.

[0018] Compared with the prior art, the utility model has the advantages that: the structure design of the combination of the flail and the tension spring is adopted, the flail realizes the anti-skid locking under the action of gravity, and the anti-falling performance is improved; the friction force with the rope is enhanced by the design of the rope grabbing wheel and the ratchet, and the anti-skid effect is improved; the outer cover of the rope switch and the linkage assembly facilitate the quick control of the equipment by the operator, and the safety and the operation convenience are improved; the double insurance setting of the switch assembly and the side plate switch, and the setting of the switch assembly through the cooperation of the button and the receiving seat make the anti-skid device more stable when switching between the locking and unlocking states, and the use safety of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a structure schematic view of the anti-skid device of the utility model;

[0020] Figure 2 It is a partial structure schematic view one of the anti-skid device of the utility model;

[0021] Figure 3 It is a partial structure schematic view two of the anti-skid device of the utility model;

[0022] Figure 4 It is a partial structure schematic view three of the anti-skid device of the utility model;

[0023] Figure 5 It is a structure schematic view of the mobile side plate of the utility model;

[0024] Figure 6 Figure 4 is a partial structure schematic view of the anti-slip device of the present application;

[0025] Figure 7 Figure 5 is a partial structure schematic view of the anti-slip device of the present application;

[0026] Figure 8 Figure 6 is a cross-sectional structure schematic view of the anti-slip device of the present application;

[0027] Figure 9 Figure 7 is a partial structure schematic view of the anti-slip device of the present application.

[0028] Explanation of reference numerals in the drawings:

[0029] 1, moving side plate; 101, first sliding groove; 102, second sliding groove; 2, first fixed side plate; 3, second fixed side plate; 31, first recess; 311, third sliding groove; 32, second recess; 4, friction block; 5, rope wheel housing; 6, side plate switch; 7, rope wheel switch; 71, first linkage block; 72, first linkage column; 73, first torsional spring; 74, first switch pivot; 75, protruding block; 76, first ball head; 77, first plunger; 8, switch assembly; 9, rope wheel assembly; 91, rope wheel; 911, limiting block; 912, first hanging hole; 92, flinging block; 921, second hanging hole; 93, tension spring; 94, rope wheel center shaft; 95, ring; 96, wheel cover; 10, first wheel plate; 11, second wheel plate. DETAILED DESCRIPTION

[0030] The present application will be further described in detail below in conjunction with embodiments. The following embodiments are illustrative of the present application and the present application is not limited to the following embodiments.

[0031] Embodiment 1: Please refer to Figures 1-9 The anti-falling anti-slip device comprises a first fixed side plate 2, a second fixed side plate 3, a friction block 4, a rope wheel assembly 9, a first wheel plate 10, and a second wheel plate 11. The rope wheel assembly 9 is rotatably arranged between the first wheel plate 10 and the second wheel plate 11. The second fixed side plate 3 is installed on the outer side wall of the first wheel plate 10, and the first fixed side plate 2 is installed on the outer side wall of the second wheel plate 11.

[0032] The rope wheel assembly 9 comprises a rope wheel 91 and a rope wheel center shaft 94. The rope wheel 91 is rotatably arranged between the first wheel plate 10 and the second wheel plate 11 through the rope wheel center shaft 94.

[0033] The anti-skid device further comprises a rope wheel cover 5, which is arranged between the first wheel plate 10 and the second wheel plate 11 and partially covers the outer periphery of the rope wheel 91. The outer periphery of the rope wheel 91 is fixedly provided with a plurality of ratchet teeth, which are uniformly distributed on the outer periphery of the rope wheel 91 to provide greater friction to the rope.

[0034] The rope wheel assembly 9 further comprises a plurality of flippers 92 and a plurality of tension springs 93. One side of the rope wheel 91 is sealed, and the other side of the rope wheel 91 is covered with a wheel cover 96. The inner side wall of the sealing portion of the rope wheel 91 is fixedly provided with a tube column and a plurality of limiting blocks 911. The limiting blocks 911 are fixedly arranged at intervals on the outer periphery of the tube column. The rope wheel center shaft 94 penetrates the tube column. One end of the flipper 92 is embedded in the limiting block 911.

[0035] Preferably, the limiting block 911 is arranged in a curved manner. The flipper 92 is embedded in the curved portion of the limiting block 911. The outer side wall of the limiting block 911 away from the flipper 92 is fixedly provided with a first hanging hole 912. The side wall of the flipper 92 away from the limiting block 911 is fixedly provided with a second hanging hole 921. The first hanging hole 912 and the corresponding second hanging hole 921 are arranged with the tension spring 93. One end of the tension spring 93 is connected with the first hanging hole 912, and the other end of the tension spring 93 is connected with the second hanging hole 921. The top of the flipper 92 is covered with a flipper gasket, which is sleeved on the outer periphery of the tube column.

[0036] Preferably, the wheel cover 96 is threadedly connected with the rope wheel 91.

[0037] The anti-skid device further comprises a rope wheel switch 7. The rope wheel switch 7 comprises an outer cover and a linkage assembly. The outer cover is connected with the linkage assembly. The outer cover is arranged on the outer side wall of the second fixed side plate 3. The linkage assembly is arranged between the wheel cover 96 and the flipper gasket. The linkage assembly comprises a first linkage block 71, a first linkage column 72 and a first switch shaft 74. The first linkage column 72 and the first switch shaft 74 are fixedly arranged on the top of the first linkage block 71. The first linkage column 72 and the first switch shaft 74 are arranged at intervals. The outer periphery of the first switch shaft 74 is sleeved with a first torsional spring 73. One end of the first linkage column 72 away from the first linkage block 71 is sequentially embedded in the outer cover through the wheel cover 96, the first wheel plate 10 and the second fixed side plate 3.

[0038] A first through hole is formed through the wheel cover 96. A fourth sliding groove is formed through the first wheel plate 10. The second fixed side plate 3 is provided with a first recess 31. A third sliding groove 311 is formed through the first recess 31. The side of the outer cover facing the second fixed side plate 3 is provided with a protrusion 75. One end of the first linkage column 72 away from the first linkage block 71 is sequentially arranged through the first through hole, the fourth sliding groove and the third sliding groove 311, and is abutted with the side wall of the protrusion 75 of the outer cover.

[0039] The second fixed side plate 3 is provided with a second groove 32 on the side away from the first wheel plate 10; a first ball head 76 is slidably arranged in the second groove 32; the first ball head 76 is covered by a first plunger 77 away from the top of the second fixed side plate 3; the first ball head 76 is rotatably embedded in the bottom of the first plunger 77; the top of the first plunger 77 is embedded in the side of the outer cover facing the second fixed side plate 3; the opening and closing of the rope wheel switch 7 is controlled by turning the outer cover.

[0040] Preferably, the protrusion 75 is arranged in an arc shape.

[0041] Preferably, the second groove 32 is composed of two spherical grooves in communication.

[0042] The rope wheel assembly 9 further comprises a ring 95, which is sleeved on the outer periphery of the limiting block 911 and abuts against the inner side wall of the wheel cover 96.

[0043] The anti-skid device further comprises a friction block 4, which is installed on the side wall of the first fixed side plate 2 and is on the same side of the rope wheel assembly 9 on the first fixed side plate 2; the side of the friction block 4 away from the first fixed side plate 2 is slidably provided with a moving side plate 1; the upper and lower ends of the moving side plate 1 are respectively provided with a second sliding groove 102 and a first sliding groove 101; a second fixed rivet is slidably arranged in the second sliding groove 102; a first fixed rivet is slidably arranged in the first sliding groove 101; the second fixed rivet sequentially penetrates the second sliding groove 102, the friction block 4 and the first fixed side plate 2 to connect and install the moving side plate 1, the friction block 4 and the first fixed side plate 2; the first fixed rivet sequentially penetrates the first sliding groove 101, the friction block 4 and the first fixed side plate 2 to connect and install the moving side plate 1, the friction block 4 and the first fixed side plate 2.

[0044] The second fixed side plate 3 is rotatably provided with a side plate switch 6 on the outer side wall away from the first wheel plate 10; one end of the side plate switch 6 is rotatably connected with the second fixed side plate 3; the other end of the side plate switch 6 is detachably connected with the second fixed rivet.

[0045] When the side plate switch 6 is connected with the second fixed rivet, the moving side plate 1 is locked; when the side plate switch 6 is away from the second fixed rivet and in an open state, the moving side plate 1 is in an unlocked state.

[0046] The anti-skid device further comprises a switch assembly 8; the moving side plate 1 is provided with a first insertion hole; the side of the friction block 4 facing the moving side plate 1 is provided with a second insertion slot; the switch assembly 8 penetrates the first insertion hole of the moving side plate 1 and is slidably embedded in the second insertion slot of the friction block 4.

[0047] The switch assembly 8 comprises a button, a receiving seat, a cross rod and a second spring; the receiving seat is provided with a first through hole; two second through holes are provided on the two sides of the receiving seat respectively, and the two second through holes are oppositely arranged; the two ends of the cross rod are respectively inserted into the corresponding second through holes and arranged in the first through hole; the lower end of the button is provided with a third groove; the lower end of the button is embedded in the first through hole, and the third groove is slidably covered on the outer periphery of the cross rod; the second spring is embedded in the first through hole and abuts against the lower end of the button; and the end of the second spring away from the button abuts against the bottom of the second slot.

[0048] The switch assembly 8 further comprises a limiting column; a second limiting groove is provided on the outer peripheral side wall of the receiving seat; one end of the limiting column is slidably embedded in the second limiting groove, and the other end of the limiting column is sequentially inserted into the side wall of the second slot and connected with the friction block.

[0049] Optionally, a fourth groove is concavely arranged on the outer periphery of the side of the first insertion hole away from the friction block; when the button is slidably abutted on the fourth groove, the moving side plate and the friction block are locked and cannot be opened; when the button is slidably pressed and sunken into the second slot, the moving side plate and the friction block are unlocked and can be opened.

[0050] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this; any person skilled in the art can make equivalent replacement or change according to the technical scheme and the improved concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. An anti-fall and anti-slip device, characterized by: The invention comprises a rope pulley assembly (9), a first wheel plate (10) and a second wheel plate (11); the rope pulley assembly (9) is rotatably arranged between the first wheel plate (10) and the second wheel plate (11); the rope pulley assembly (9) comprises a rope grabbing wheel (91), a plurality of swinging blocks (92), a plurality of tension springs (93) and a rope pulley center shaft (94); the rope grabbing wheel (91) is rotatably arranged between the first wheel plate (10) and the second wheel plate (11) via the rope pulley center shaft (94); One side of the rope grab wheel (91) is sealed, and the other side of the rope grab wheel (91) is covered with a wheel cover (96); a pipe column and a plurality of limit blocks (911) are fixedly arranged on the inner side wall of the seal of the rope grab wheel (91), and the limit blocks (911) are fixedly arranged on the outer periphery of the pipe column at intervals; the rope wheel center axis (94) passes through the pipe column; one end of the swing block (92) is embedded in the limit block (911).

2. The anti-fall and anti-slip device according to claim 1, characterized in that: The limit block (911) is arranged in a curved shape; the swing block (92) is embedded in the curved portion of the limit block (911); a first hanging hole (912) is fixedly provided on the outer side wall of the limit block (911) away from the swing block (92), and a second hanging hole (921) is fixedly provided on the side wall of the swing block (92) away from the limit block (911); a tension spring (93) is installed between the first hanging hole (912) and the corresponding second hanging hole (921), one end of the tension spring (93) is installed and connected to the first hanging hole (912), and the other end of the tension spring (93) is installed and connected to the second hanging hole (921); a top cover of the swing block (92) is provided with a swing block gasket, and the swing block gasket is sleeved on the outer periphery of the pipe column.

3. The anti-fall and anti-slip device according to claim 1, characterized in that: The invention also includes a first fixed side plate (2), a second fixed side plate (3) and a rope pulley casing (5); the second fixed side plate (3) is mounted on the outer side wall of the first wheel plate (10), and the first fixed side plate (2) is mounted on the outer side wall of the second wheel plate (11); the rope pulley casing (5) is mounted between the first wheel plate (10) and the second wheel plate (11), and half-encloses the outer periphery of the rope grabbing wheel (91); a plurality of ratchet teeth are fixedly arranged on the outer periphery of the rope grabbing wheel (91), and the ratchet teeth are evenly distributed on the outer periphery of the rope grabbing wheel (91).

4. The anti-fall and anti-slip device according to claim 2, characterized in that: The invention also includes a pulley switch (7); the pulley switch (7) includes an outer cover and a linkage assembly; the outer cover is installed and connected to the linkage assembly; the outer cover is installed on the outer side wall of the second fixed side plate (3), and the linkage assembly is installed between the wheel cover (96) and the swing block gasket; the linkage assembly includes a first linkage block (71), a first linkage column (72) and a first switch shaft (74); the first linkage column (72) and the first switch shaft (74) are both fixedly arranged on the top of the first linkage block (71), and the first linkage column (72) and the first switch shaft (74) are spaced apart; the outer periphery of the first switch shaft (74) is sleeved with a first torsion spring (73); the end of the first linkage column (72) away from the first linkage block (71) passes through the wheel cover (96), the first wheel plate (10) and the second fixed side plate (3) in sequence and is embedded in the outer cover.

5. The anti-fall and anti-slip device according to claim 3, characterized in that: A first through hole is formed on the wheel cover (96); a fourth slide groove is formed on the first wheel plate (10); a first groove (31) is formed on the second fixed side plate (3), and a third slide groove (311) is formed in the first groove (31); a protrusion (75) is provided on the side of the outer cover facing the second fixed side plate (3); an end of the first linkage column (72) away from the first linkage block (71) passes through the first through hole, the fourth slide groove and the third slide groove (311) in sequence, and then abuts against the side wall of the protrusion (75) of the outer cover; A second groove (32) is provided on a side of the second fixed side plate (3) away from the first wheel plate (10); a first ball head (76) is slidably provided in the second groove (32); a first plunger (77) is provided on a top cover of the first ball head (76) away from the second fixed side plate (3); the first ball head (76) is rotatably embedded in the bottom of the first plunger (77), and the top of the first plunger (77) is embedded in a side of the outer cover facing the second fixed side plate (3); and the opening and closing of the rope pulley switch (7) is controlled by toggling the outer cover.

6. The anti-fall and anti-slip device according to claim 5, characterized in that: The projection (75) is arranged in an arc shape.

7. The anti-fall and anti-slip device according to claim 3, characterized in that: The invention also includes a friction block (4), which is installed on the side wall of the first fixed side plate (2) and is located on the same side of the first fixed side plate (2) as the rope pulley assembly (9); a movable side plate (1) is slidably provided on the side of the friction block (4) away from the first fixed side plate (2); a second sliding groove (102) and a first sliding groove (101) are respectively penetrated at the upper and lower ends of the movable side plate (1); a second fixing rivet is slidably provided in the second sliding groove (102), and a first fixing rivet is slidably provided in the first sliding groove (101); the second fixing rivet penetrates the second sliding groove (102), the friction block (4) and the first fixed side plate (2) in sequence to install and connect the movable side plate (1), the friction block (4) and the first fixed side plate (2); the first fixing rivet penetrates the first sliding groove (101), the friction block (4) and the first fixed side plate (2) in sequence to install and connect the movable side plate (1), the friction block (4) and the first fixed side plate (2).

8. The anti-fall and anti-slip device according to claim 1, characterized in that: A side panel switch (6) is rotatably provided on the outer side wall of the second fixed side panel (3) away from the first wheel panel (10); one end of the side panel switch (6) is rotatably connected to the second fixed side panel (3), and the other end of the side panel switch (6) is detachably connected to the second fixed rivet.

9. The anti-fall and anti-slip device according to claim 1, characterized in that: It also includes a ring (95), which is sleeved on the outer periphery of the limit block (911) and abuts against the inner side wall of the wheel cover (96).

10. The anti-fall and anti-slip device according to claim 7, characterized in that: It also includes a switch assembly (8); a first insertion hole is formed through the movable side plate (1); a second slot is formed on the side of the friction block (4) facing the movable side plate (1); the switch assembly (8) passes through the first insertion hole of the movable side plate (1) and is slidably embedded in the second slot of the friction block (4); The switch assembly (8) includes a button, a receiving seat, a cross bar and a second spring; the receiving seat is provided with a first through hole; two second through holes are provided on both sides of the receiving seat, and the two second through holes are arranged opposite to each other; the two ends of the cross bar are provided with corresponding second through holes, and are mounted in the first through hole; a third groove is provided at the lower end of the button; the lower end of the button is embedded in the first through hole, and the third groove slides around the outer periphery of the cross bar; the second spring is embedded in the first through hole and abuts against the lower end of the button; the end of the second spring away from the button abuts against the bottom of the second slot; The switch assembly (8) further comprises a limiting column; a second limiting slot is provided on the outer peripheral side wall of the receiving seat; one end of the limiting column is slidably embedded in the second limiting slot, and the other end of the limiting column sequentially passes through the side wall of the second slot and is installed and connected to the friction block.

Images