Anti-falling device of mine hoist

Abstract

The invention belongs to the technical field of elevator safety, and particularly discloses a mine elevator anti-falling device which comprises an upper fixing plate and a lower fixing plate which are fixed to the top wall and the bottom wall of a mine respectively, a vertical guide rail is arranged between the upper fixing plate and the lower fixing plate, a sliding body and a fence are arranged on the vertical guide rail, the fence is arranged on the lower wall of the sliding body, and the upper fixing plate and the lower fixing plate are fixed to the upper fixing plate. An air flow anti-falling mechanism is arranged on the sliding body, and an eddy current damping slow descending assembly is arranged between the upper fixing plate and the lower fixing plate. When the elevator breaks down and the lift car slides down rapidly, the lift car and the lifting rope are fixed together through the fact that the speed of air flow in the air flow groove is increased, the pressure on the two sides of the control panel is different and the control panel moves according to the Bernoulli principle, and then the lift car and the lifting rope are fixed together through the fact that the magnetic block moves in the copper pipe and eddy current is generated in the copper pipe. Therefore, the purpose of slowly descending the lift car is achieved.

Description

Technical Field

[0001] The invention belongs to the technical field, and in particular relates to a mine hoist fall arrester. Background Art

[0002] A fall arrester, also known as a speed differential, can quickly brake and lock a falling object within a limited distance. It is mainly used for the safety protection of elevators and hoists to prevent damage to personnel and equipment caused by the rapid decline of elevators and hoists. There are two main ways to trigger a fall arrester for a hoist. The first is to use weightlessness for sensing. When the elevator slides rapidly, the counterweight is in a weightless state, which triggers it. The second is to use electronic sensing equipment for sensing, such as rate sensing. Most existing fall arresters use electric control to emergency brake the car. On the one hand, when the hoist fails, the electric control system is also very likely to fail. On the other hand, due to inertia, people in the car are very likely to feel uncomfortable or even seriously injured.

[0003] Therefore, a mine hoist fall arrester is needed to solve the above problems. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a mine hoist fall arrester, which utilizes the fact that when the hoist fails and the car slides down rapidly, the air flow velocity in the air flow groove increases. According to the Bernoulli principle, the pressure on both sides of the control plate is different, and the control plate moves, thereby fixing the car and the suspension rope together. Then, the magnetic block is moved in the copper tube to generate eddy current in the copper tube, thereby achieving the purpose of slowing down the descent of the car.

[0005] The technical solution adopted by the present invention is as follows: The present invention proposes a mine hoist anti-fall device, comprising an upper fixed plate and a lower fixed plate respectively fixed to the top wall and the bottom wall of the mine, a vertical guide rail is arranged between the upper fixed plate and the lower fixed plate, a limit groove is penetrated through the side wall of the vertical guide rail, a sliding body and a fence are arranged on the vertical guide rail, the fence is arranged on the lower wall of the sliding body, an air flow anti-fall mechanism is arranged on the sliding body, and an eddy current damping slow-descent component is arranged between the upper fixed plate and the lower fixed plate; The air flow anti-fall mechanism includes a Bernoulli automatic control component, a clamping transmission component and an automatic locking component. The Bernoulli automatic control component is arranged inside the sliding body and the enclosure, the clamping transmission component is arranged on the upper wall of the sliding body, and the automatic locking component is arranged on the sliding body and the Bernoulli automatic control component.

[0006] Furthermore, a sliding groove is penetrated at the center of the upper wall of the sliding body, the vertical guide rail penetrates the sliding groove, a rope groove is penetrated on one side wall of the sliding groove, and air flow grooves are symmetrically penetrated on the upper wall of the sliding body. The air flow grooves are symmetrically arranged on both sides of the sliding groove. The upper wall of the sliding body is symmetrically provided with placement holes, and the placement holes are blind holes, and the placement holes are located on the outside of the air flow groove.

[0007] Furthermore, the Bernoulli automatic control component includes a control plate, a cross plate, a card plate, a limit shaft, a control spring, a transmission spring, a lifting column and a lifting rod. The control plate is in a broken line shape, and the lower end of the control plate is bent toward the enclosure. The control plate is arranged in the airflow groove, the cross plate is arranged at the upper end of the control plate, the cross plate is slidably arranged on the upper wall of the sliding body, the card plate is arranged at the end of the cross plate, the limit shaft is arranged on the two side walls of the airflow groove, the limit shaft passes through the side wall of the control plate, the control spring is sleeved on the limit shaft, the two ends of the control spring are respectively arranged on the control plate and the inner wall of the airflow groove, the lower end of the transmission spring is arranged on the bottom wall of the placement hole, the lifting column is slidably arranged in the placement hole, the lifting column is arranged at the upper end of the transmission spring, and the lifting rod is arranged at the upper end of the lifting column.

[0008] Furthermore, the clamping transmission assembly includes a transmission rack, a transmission gear, a support frame, a transmission shaft, a swing arm, a clamping plate and an elastic friction pad, the transmission rack is arranged on the outer wall of the lifting rod, the support frames are arranged in pairs on the upper wall of the sliding body, the transmission shaft is arranged on the support frame, one end of the transmission shaft passes through one of the support frames, one end of the swing arm is arranged at the end of the transmission shaft, the clamping plate is hinged to the other end of the swing arm, the clamping plate is slidably arranged in the limit groove, the inner wall of the clamping plate is provided with an elastic friction pad, the transmission gear is arranged on the transmission shaft, the transmission gear is arranged between the two support frames, and the transmission gear is meshed with the transmission rack.

[0009] Furthermore, the automatic locking assembly includes a linkage frame, a mounting plate, movable teeth, a placement plate, fixed teeth, a guide shaft, an adjusting spring and a spring baffle. One end of the linkage frame is arranged on the lifting rod, the linkage frame is L-shaped, the guide shaft array is arranged on the linkage frame, the spring baffle is arranged on the outer end of the guide shaft, the adjusting spring is sleeved on the guide shaft, the two ends of the adjusting spring are respectively arranged on the linkage frame and the spring baffle, the mounting plate is arranged on the inner end of the guide shaft, the movable tooth array is arranged on the inner side wall of the mounting plate, the placement plate is arranged on the outer side wall of the sliding body, and the fixed tooth array is arranged on the side wall of the placement plate.

[0010] Furthermore, the eddy current damping slow descent assembly includes a copper tube, a suspension rope, a magnetic block, a guide pulley 1 and a guide pulley 2, the lower end of the copper tube is arranged on the upper wall of the lower fixed plate, the guide pulley 1 and the guide pulley 2 are arranged on the lower wall of the upper fixed plate, the guide pulley 1 is aligned with the upper end of the copper tube, the guide pulley 2 is aligned with the limiting groove, one end of the suspension rope is arranged on the upper wall of the lower fixed plate, the suspension rope passes through the limiting groove and the rope groove, the suspension rope bypasses the guide pulley 1 and the guide pulley 2, the movable end of the suspension rope is in the copper tube, the magnetic block is arranged in the copper tube, and the magnetic block is arranged at the movable end of the suspension rope.

[0011] Furthermore, the fixed tooth and the movable tooth are right triangles, the inclined surface of the fixed tooth is parallel to the inclined surface of the movable tooth, and when the adjustment spring is in a normal state, the movable tooth is located between two adjacent fixed teeth.

[0012] Furthermore, the outer side wall of the sliding body is provided with a connecting plate.

[0013] The beneficial effects achieved by the present invention using the above structure are as follows: 1. When the elevator fails and the car descends rapidly, the air flow speed through the air flow slot increases. According to Bernoulli's principle, the pressure of the control plate toward the control spring side is less than the pressure on the other side of the control plate. The control plate drives the cross plate and the card plate to move. At this time, the card plate is pulled away from the upper end surface of the lifting column. The transmission spring pushes the lifting column, the lifting rod and the transmission rack upward, the transmission rack drives the transmission gear to rotate, the transmission gear drives the transmission shaft to rotate, the transmission shaft drives the swing arm to swing downward, and the swing arm drives the clamping plate to move to the middle, so that the two clamping plates tighten the suspension rope; 2. When the lifting rod moves upward, the lifting rod drives the linkage frame, the guide shaft, the mounting plate and the movable teeth to move upward. When the movable teeth move upward relative to the fixed teeth, the fixed teeth push the movable teeth outward, thereby pushing the mounting plate, the guide shaft and the spring baffle outward. When the lifting rod stops moving upward, the adjustment spring pulls the spring baffle inward, and the spring baffle pushes the guide shaft, the mounting plate and the movable teeth inward. The movable teeth enter between the fixed teeth, thereby locking the mounting plate to prevent the mounting plate from moving downward, so that the clamping plate clamps and fixes the lifting rope; 3. The car drives the sliding body to descend along the vertical guide rail. The clamping plate clamps the lifting rope, thereby pulling the lifting rope downward. The lifting rope pulls the magnet upward. The magnet moves upward in the copper tube, generating eddy current in the copper tube, thereby generating resistance and preventing the magnet from moving upward, thereby achieving the purpose of slowly descending the car. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic diagram of the three-dimensional structure of a mine hoist fall arrester proposed by the present invention; Figure 2 for Figure 1 Left view of Figure 3 It is a three-dimensional structural schematic diagram of the air flow anti-fall mechanism; Figure 4 for Figure 3 The main view of Figure 5 for Figure 3 A top view of Figure 6 for Figure 5 AA section diagram in; Figure 7 It is a three-dimensional structural schematic diagram of the clamping transmission assembly; Figure 8 is a schematic diagram of the three-dimensional structure of the sliding body; Fig. 9 for Figure 8 Bottom view of .

[0015] Among them, 1. upper fixed plate, 2. lower fixed plate, 3. vertical guide rail, 4. sliding body, 5. enclosure, 6. air flow anti-fall mechanism, 7. eddy current damping slow-down component, 8. Bernoulli automatic control component, 9. clamping transmission component, 10. automatic locking component, 11. sliding groove, 12. rope groove, 13. air flow groove, 14. placement hole, 15. control board, 16. horizontal board, 17. card board, 18. limit shaft, 19. control spring, 20. transmission spring, 21. lifting column, 22. Lifting rod, 23, transmission rack, 24, transmission gear, 25, support frame, 26, transmission shaft, 27, swing arm, 28, clamping plate, 29, elastic friction pad, 30, linkage frame, 31, mounting plate, 32, movable teeth, 33, placement plate, 34, fixed teeth, 35, guide shaft, 36, adjustment spring, 37, spring baffle, 38, copper tube, 39, lifting rope, 40, magnetic block, 41, guide pulley one, 42, guide pulley two, 43, connecting plate, 44, limit groove.

[0016] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0019] like Figure 1 As shown, the present invention proposes a mine hoist anti-fall device, comprising an upper fixed plate 1 and a lower fixed plate 2 respectively fixed to the top wall and the bottom wall of the mine, a vertical guide rail 3 is arranged between the upper fixed plate 1 and the lower fixed plate 2, a limiting groove 44 is penetrated through the side wall of the vertical guide rail 3, a sliding body 4 and a fence 5 are arranged on the vertical guide rail 3, the fence 5 is arranged on the lower wall of the sliding body 4, an air flow anti-fall mechanism 6 is arranged on the sliding body 4, and an eddy current damping slow-down component 7 is arranged between the upper fixed plate 1 and the lower fixed plate 2; The air flow anti-fall mechanism 6 includes a Bernoulli automatic control component 8, a clamping transmission component 9 and an automatic locking component 10. The Bernoulli automatic control component 8 is arranged inside the sliding body 4 and the enclosure 5, the clamping transmission component 9 is arranged on the upper wall of the sliding body 4, and the automatic locking component 10 is arranged on the sliding body 4 and the Bernoulli automatic control component 8.

[0020] like Figure 1 , Figure 8 , Fig. 9 As shown, a sliding groove 11 is penetrated at the center of the upper wall of the sliding body 4, the vertical guide rail 3 penetrates the sliding groove 11, a rope groove 12 is penetrated on one side wall of the sliding groove 11, and air flow grooves 13 are symmetrically penetrated on the upper wall of the sliding body 4. The air flow grooves 13 are symmetrically arranged on both sides of the sliding groove 11. The upper wall of the sliding body 4 is symmetrically provided with placement holes 14, and the placement holes 14 are blind holes, and the placement holes 14 are located on the outside of the air flow groove 13.

[0021] like Figure 1 , Figure 5 , Figure 6As shown, the Bernoulli automatic control component 8 includes a control plate 15, a transverse plate 16, a card plate 17, a limit shaft 18, a control spring 19, a transmission spring 20, a lifting column 21 and a lifting rod 22. The control plate 15 is in a broken line shape, and the lower end of the control plate 15 is bent toward the enclosure 5. The control plate 15 is arranged in the air flow groove 13, the transverse plate 16 is arranged at the upper end of the control plate 15, the transverse plate 16 is slidably arranged on the upper wall of the sliding body 4, the card plate 17 is arranged at the end of the transverse plate 16, the limit shaft 18 is arranged on the two side walls of the air flow groove 13, and the limit shaft 18 penetrates The control spring 19 is sleeved on the limit shaft 18, and the two ends of the control spring 19 are respectively arranged on the inner walls of the control plate 15 and the air flow groove 13. The lower end of the transmission spring 20 is arranged on the bottom wall of the placement hole 14. The lifting column 21 is slidably arranged in the placement hole 14. The lifting column 21 is arranged at the upper end of the transmission spring 20. The lifting rod 22 is arranged at the upper end of the lifting column 21. In the initial state, the transmission spring 20 is in a compressed state, the upper end surface of the lifting column 21 is flush with the upper wall of the sliding body 4, and the clamping plate 17 is at the upper end surface of the lifting column 21.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 6 , Figure 7 As shown, the clamping transmission assembly 9 includes a transmission rack 23, a transmission gear 24, a support frame 25, a transmission shaft 26, a swing arm 27, a clamping plate 28 and an elastic friction pad 29. The transmission rack 23 is arranged on the outer wall of the lifting rod 22, and the support frames 25 are arranged in pairs on the upper wall of the sliding body 4. The transmission shaft 26 is arranged on the support frames 25, and one end of the transmission shaft 26 passes through one of the support frames 25. One end of the swing arm 27 is arranged at the end of the transmission shaft 26. The clamping plate 28 is hinged to the other end of the swing arm 27. The clamping plate 28 is slidably arranged in the limit groove 44. The inner wall of the clamping plate 28 is provided with an elastic friction pad 29. The transmission gear 24 is arranged on the transmission shaft 26. The transmission gear 24 is arranged between two support frames 25, and the transmission gear 24 is meshed with the transmission rack 23.

[0023] like Figure 1 , Figure 4 , Figure 5 , Figure 6As shown, the automatic locking assembly 10 includes a linkage frame 30, a mounting plate 31, movable teeth 32, a placement plate 33, fixed teeth 34, a guide shaft 35, an adjustment spring 36 and a spring baffle 37. One end of the linkage frame 30 is arranged on the lifting rod 22, and the linkage frame 30 is L-shaped. The guide shaft 35 array is arranged on the linkage frame 30 through the linkage frame 30, the spring baffle 37 is arranged on the outer end of the guide shaft 35, the adjustment spring 36 is sleeved on the guide shaft 35, and the two ends of the adjustment spring 36 are respectively arranged on the linkage frame 30 and the spring baffle 37, the mounting plate 31 is arranged on the inner end of the guide shaft 35, the movable teeth 32 array is arranged on the inner side wall of the mounting plate 31, the placement plate 33 is arranged on the outer side wall of the sliding body 4, and the fixed teeth 34 array is arranged on the side wall of the placement plate 33.

[0024] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown, the eddy current damping slow-descent assembly 7 includes a copper tube 38, a suspension rope 39, a magnetic block 40, a guide pulley 1 41 and a guide pulley 2 42. The lower end of the copper tube 38 is arranged on the upper wall of the lower fixed plate 2, the guide pulley 1 41 and the guide pulley 2 42 are arranged on the lower wall of the upper fixed plate 1, the guide pulley 1 41 is aligned with the upper end of the copper tube 38, the guide pulley 2 42 is aligned with the limiting groove 44, one end of the suspension rope 39 is arranged on the upper wall of the lower fixed plate 2, the suspension rope 39 passes through the limiting groove 44 and the rope groove 12, the suspension rope 39 bypasses the guide pulley 1 41 and the guide pulley 2 42, the movable end of the suspension rope 39 is in the copper tube 38, the magnetic block 40 is arranged in the copper tube 38, and the magnetic block 40 is arranged at the movable end of the suspension rope 39.

[0025] like Figure 4 , Figure 5 , Figure 6 As shown, the fixed tooth 34 and the movable tooth 32 are right triangles, the inclined surface of the fixed tooth 34 is parallel to the inclined surface of the movable tooth 32 , and when the adjustment spring 36 is in a normal state, the movable tooth 32 is located between two adjacent fixed teeth 34 .

[0026] like Figure 1 As shown, the outer side wall of the sliding body 4 is provided with a connecting plate 43, and the sliding body 4 is fixed to the elevator car through the connecting plate 43.

[0027] When in use, the sliding body 4 is fixed to the elevator car by the connecting plate 43. When the elevator fails and the car slides down rapidly, the air flow speed through the air flow slot 13 increases. According to the Bernoulli principle, the pressure of the control plate 15 toward the control spring 19 is less than the pressure on the other side of the control plate 15. The control plate 15 compresses the control spring 19, and the control plate 15 drives the cross plate 16 and the card plate 17 to move. At this time, the card plate 17 is pulled away from the upper end surface of the lifting column 21, and the transmission spring 20 pushes the lifting column 21 upward. The lifting column 21 drives the lifting rod 22 to move upward, and the lifting rod 22 drives the transmission rack 23 to move upward. The transmission rack 23 drives The driving gear 24 rotates, the driving gear 24 drives the driving shaft 26 to rotate, the driving shaft 26 drives the swing arm 27 to swing downward, the swing arm 27 drives the clamping plate 28 to move toward the middle, so that the two clamping plates 28 tighten the suspension rope 39, and the elastic friction pad 29 increases the friction between the suspension rope 39 and the suspension rope 39, the car drives the sliding body 4 to descend along the vertical guide rail 3, the clamping plate 28 clamps the suspension rope 39, thereby pulling the suspension rope 39 downward, and the suspension rope 39 pulls the magnetic block 40 upward, the magnetic block 40 moves upward in the copper tube 38, and eddy current is generated in the copper tube 38, thereby generating resistance, preventing the magnetic block 40 from moving upward, thereby achieving the purpose of slowing down the car; When the lifting rod 22 moves upward, the lifting rod 22 drives the linkage frame 30 to move upward, the linkage frame 30 drives the guide shaft 35 and the mounting plate 31 to move upward, and the mounting plate 31 drives the movable tooth 32 to move upward. When the movable tooth 32 moves upward relative to the fixed tooth 34, the fixed tooth 34 pushes the movable tooth 32 outward, thereby pushing the mounting plate 31 outward, the mounting plate 31 pushes the guide shaft 35 outward, and the guide shaft 35 pushes the spring baffle 37 outward. When the lifting rod 22 stops moving upward, the adjustment spring 36 pulls the spring baffle 37 inward, and the spring baffle 37 pushes the guide shaft 35, the mounting plate 31 and the movable tooth 32 inward, and the movable tooth 32 enters between the fixed tooth 34, thereby locking the mounting plate 31 to prevent the mounting plate 31 from moving downward, so that the clamping plate 28 clamps and fixes the suspension rope 39.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0029] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

[0030] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A mine hoist fall arrester, comprising an upper fixing plate (1) and a lower fixing plate (2) respectively fixed to the top wall and the bottom wall of the mine, wherein a vertical guide rail (3) is arranged between the upper fixing plate (1) and the lower fixing plate (2), and characterized in that: A limiting groove (44) is provided through the side wall of the vertical guide rail (3); a sliding body (4) and a barrier (5) are provided on the vertical guide rail (3); the barrier (5) is arranged on the lower wall of the sliding body (4); an air flow anti-falling mechanism (6) is provided on the sliding body (4); and an eddy current damping slow-descent component (7) is provided between the upper fixing plate (1) and the lower fixing plate (2); The air flow anti-fall mechanism (6) comprises a Bernoulli automatic control component (8), a clamping transmission component (9) and an automatic locking component (10); the Bernoulli automatic control component (8) is arranged inside the sliding body (4) and the enclosure (5); the clamping transmission component (9) is arranged on the upper wall of the sliding body (4); and the automatic locking component (10) is arranged on the sliding body (4) and the Bernoulli automatic control component (8).

2. A mine hoist anti-fall device according to claim 1, characterized in that: A sliding groove (11) is penetrated at the center of the upper wall of the sliding body (4), the vertical guide rail (3) penetrates the sliding groove (11), a rope groove (12) is penetrated on one side wall of the sliding groove (11), an airflow groove (13) is symmetrically penetrated on the upper wall of the sliding body (4), the airflow grooves (13) are symmetrically arranged on both sides of the sliding groove (11), and a placement hole (14) is symmetrically arranged on the upper wall of the sliding body (4), the placement hole (14) is a blind hole, and the placement hole (14) is located outside the airflow groove (13).

3. A mine hoist anti-fall device according to claim 2, characterized in that: The Bernoulli automatic control component (8) comprises a control plate (15), a transverse plate (16), a clamping plate (17), a limit shaft (18), a control spring (19), a transmission spring (20), a lifting column (21) and a lifting rod (22); the control plate (15) is in a broken line shape; the lower end of the control plate (15) is bent toward the enclosure (5); the control plate (15) is arranged in the air flow groove (13); the transverse plate (16) is arranged at the upper end of the control plate (15); the transverse plate (16) is slidably arranged on the upper wall of the sliding body (4); and the clamping plate (17) is arranged at the end of the transverse plate (16). The limiting shaft (18) is arranged on the two side walls of the air flow groove (13), the limiting shaft (18) passes through the side wall of the control plate (15), the control spring (19) is sleeved on the limiting shaft (18), the two ends of the control spring (19) are respectively arranged on the inner wall of the control plate (15) and the air flow groove (13), the lower end of the transmission spring (20) is arranged on the bottom wall of the placement hole (14), the lifting column (21) is slidably arranged in the placement hole (14), the lifting column (21) is arranged on the upper end of the transmission spring (20), and the lifting rod (22) is arranged on the upper end of the lifting column (21).

4. A mine hoist anti-fall device according to claim 3, characterized in that: The clamping transmission assembly (9) comprises a transmission rack (23), a transmission gear (24), a support frame (25), a transmission shaft (26), a swing arm (27), a clamping plate (28) and an elastic friction pad (29), wherein the transmission rack (23) is arranged on the outer wall of the lifting rod (22), the support frames (25) are arranged in pairs on the upper wall of the sliding body (4), the transmission shaft (26) is arranged on the support frames (25), and one end of the transmission shaft (26) passes through one of the support frames (25). ), one end of the swing arm (27) is arranged at the end of the transmission shaft (26), the clamping plate (28) is hingedly arranged at the other end of the swing arm (27), the clamping plate (28) is slidably arranged in the limit groove (44), the inner wall of the clamping plate (28) is provided with an elastic friction pad (29), the transmission gear (24) is arranged on the transmission shaft (26), the transmission gear (24) is arranged between the two support frames (25), and the transmission gear (24) is meshed with the transmission rack (23).

5. A mine hoist anti-fall device according to claim 4, characterized in that: The automatic locking assembly (10) comprises a linkage frame (30), a mounting plate (31), movable teeth (32), a placement plate (33), fixed teeth (34), a guide shaft (35), an adjustment spring (36) and a spring baffle (37); one end of the linkage frame (30) is arranged on the lifting rod (22); the linkage frame (30) is L-shaped; an array of the guide shafts (35) is arranged on the linkage frame (30); and the spring baffle (37) is arranged on the guide shaft ( The outer end of the guide shaft (35), the adjusting spring (36) is sleeved on the guide shaft (35), the two ends of the adjusting spring (36) are respectively arranged on the linkage frame (30) and the spring baffle (37), the mounting plate (31) is arranged on the inner end of the guide shaft (35), the array of movable teeth (32) is arranged on the inner side wall of the mounting plate (31), the placement plate (33) is arranged on the outer side wall of the sliding body (4), and the array of fixed teeth (34) is arranged on the side wall of the placement plate (33).

6. A mine hoist fall arrester according to claim 5, characterized in that: The eddy current damping slow-down assembly (7) comprises a copper tube (38), a suspension rope (39), a magnetic block (40), a first guide pulley (41) and a second guide pulley (42), wherein the lower end of the copper tube (38) is arranged on the upper wall of the lower fixed plate (2), the first guide pulley (41) and the second guide pulley (42) are arranged on the lower wall of the upper fixed plate (1), the first guide pulley (41) is aligned with the upper end of the copper tube (38), and the second guide pulley (42) is aligned with the upper end of the copper tube (38). The limiting grooves (44) are aligned, one end of the suspension rope (39) is arranged on the upper wall of the lower fixed plate (2), the suspension rope (39) passes through the limiting groove (44) and the rope groove (12), the suspension rope (39) passes around the first guide pulley (41) and the second guide pulley (42), the movable end of the suspension rope (39) is in the copper tube (38), the magnetic block (40) is arranged in the copper tube (38), and the magnetic block (40) is arranged at the movable end of the suspension rope (39).

7. A mine hoist anti-fall device according to claim 6, characterized in that: The fixed teeth (34) and the movable teeth (32) are right triangles, the inclined surface of the fixed teeth (34) is parallel to the inclined surface of the movable teeth (32), and when the adjustment spring (36) is in a normal state, the movable tooth (32) is located between two adjacent fixed teeth (34).

8. A mine hoist fall arrester according to claim 7, characterized in that: The outer side wall of the sliding body (4) is provided with a connecting plate (43).

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