Shaft cage anti-falling and escape integrated equipment and control method thereof

Abstract

The invention relates to the technical field of shaft cages, in particular to anti-falling and escape integrated equipment for a shaft cage and a control method of the anti-falling and escape integrated equipment for the shaft cage. At the moment, the connecting plate drives the two brake rocker arms to rotate anticlockwise around the first pin shaft, and then the brake rocker arms drive the rocker arm hooks to be clamped with the clamping plate upwards in time, so that the cage is braked instantly and rapidly; then, the trapped person can manually unlock and turn over an escape ladder cover preset at the top of the cage to climb out of the cage, and smoothly climb out of a shaft by means of a series of preset escape ladder plates at equal intervals, so that the trapped person can quickly rescue themselves; and finally, rescue and maintenance personnel can conveniently and quickly lower maintenance materials again by means of the escape ladder plate, timely maintain and replace a new steel wire rope, and finally, the cage lifting function is quickly recovered.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft cages, and in particular to integrated equipment for preventing a shaft cage from falling and escaping, and a control method thereof. Background Art

[0002] In all kinds of underground projects, such as mines, hydropower stations, underground projects, and military defense projects, when the burial depth is large, it is necessary to establish a connection between the underground and the ground by building a vertical shaft, which mainly plays the role of lifting useful minerals, moving personnel up and down, lowering materials and equipment, and ventilation and drainage. In particular, in mine construction and production operations in my country, the vertical shafts and blind shafts are most frequently used, also known as vertical shafts. At present, the diameter and vertical depth of the shafts of various deep vertical shafts are getting larger and larger, most of which have exceeded 10 meters and 1,000 meters respectively, and are also gradually breaking records.

[0003] However, it is not difficult to find that despite the large-scale construction of the vertical shaft and the gradual improvement of the supporting construction technology, the rapid braking and escape performance of the cage supporting the shaft is still lagging behind, and even lacks effective technical measures. For the auxiliary shaft of the mine, after the lifting wire rope of the cage breaks due to force majeure or operational errors, the existing anti-fall device has serious defects such as low sensitivity and low overload resistance, and there is no corresponding escape and rescue function, resulting in the safety of miners and equipment cannot be guaranteed after an accident, and once trapped, the rescue work is difficult to carry out and the best rescue opportunity is missed, causing heavy losses to the entire mine. At the same time, it is difficult to replace the cage wire rope, and the waiting time for the lifting cage to be reset and resumed is also long. To this end, we propose an integrated anti-fall and escape equipment for the shaft cage and its control method to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an integrated shaft cage anti-fall and escape equipment and a control method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an integrated equipment for preventing a tank cage from falling and escaping from a wellbore, comprising an outer frame of the wellbore, a starting motor, a steel wire rope and a tank cage, wherein the starting motor is fixedly connected to the top of the outer frame of the wellbore and is fixedly connected to the tank cage through the steel wire rope, and guide rail beams are fixedly connected to both sides of the tank cage, and the guide rail beams are connected to the outer frame of the wellbore to realize the up and down sliding of the tank cage; a lifting beam is fixedly connected between the two guide rail beams, and two cutouts are provided on the top of the lifting beam, and a diagonal bracing beam is obliquely arranged between the lifting beam and the guide rail beam; the top of the tank cage An escape ladder cover is provided which rotates inwardly by hinges, and handrails are provided in the middle positions of the four sides inside the cage; a braking device for stopping the cage is provided above the cage, and the braking device includes two connecting plates, two connecting rods, a connecting block, two brake rocker arms and two rocker arm hooks; the connecting rod is slidably connected inside the incision, a through hole is provided on the top of the connecting rod for connecting with a steel wire rope, the bottom of the connecting rod is fixedly connected to the two connecting plates, the bottoms of the two connecting plates are fixedly connected to the connecting block, and the bottom of the connecting block is provided with a through hole for connecting with a reset component.

[0006] Preferably, the reset component is configured as a strong reset spring, and the other end of the strong reset spring is fixedly connected to the lifting ring on the top of the cage. In particular, when the hydraulic environment of the wellbore is relatively complex, the strong reset spring will suffer certain fatigue damage or corrosion during long-term use. Here, an alternative structure can be recommended - a gravity hammer, that is, a heavy hammer of a certain weight is suspended in the through hole at the bottom of the connecting block by a steel wire rope, which plays the same instantaneous reset effect as the strong reset spring.

[0007] Preferably, two brake rocker arms are rotatably connected between the two connecting plates via a second pin shaft, a limiting hole is provided on the brake rocker arm, and the second pin shaft slides in the limiting hole to achieve distance compensation.

[0008] Preferably, the brake rocker arm is rotatably connected to the corresponding diagonal support beam through a first pin shaft, and the rocker arm hook is fixedly connected to the bottom of the brake rocker arm.

[0009] Preferably, the rocker arm hook is configured to be V-shaped to achieve a tight fit with the clamping plate.

[0010] Preferably, the outer frame of the wellbore includes four first square tubes and multiple second square tubes, the four first square tubes and multiple second square tubes are welded to each other, and two third square tubes and two fourth square tubes are welded to the inner sides of the second square tubes on the left and right sides in sequence.

[0011] Preferably, a series of smaller equidistant clamps are fixedly connected between the two third party tubes and the corresponding two fourth party tubes. The clamps cooperate closely with the rocker hooks to achieve safe braking of the cage, and the bottom of the clamps is provided with an inclined portion for easy resetting.

[0012] Preferably, a series of relatively large and equidistant escape ladder components are fixedly connected between the two first square tubes on the left side from top to bottom until close to the shaft bottom plate position, and this end position is roughly equal to the cage structure height from the shaft bottom plate. At the same time, a handrail hole is provided on the sheet metal structure on one side of the escape ladder component to assist climbing up and down.

[0013] Preferably, the top of the escape ladder cover is fixedly connected to two climbing ladders, and the top and bottom of the escape ladder cover are rotatably connected to two handles through a penetrating pin shaft, and the escape ladder cover can be flipped downward by rotating the bottom handle and pulling it downward. Similarly, in combination with the inevitable mechanical vibration or shaking during the actual cage lifting process, the handle member can be replaced with other similar simple locking devices to prevent the escape ladder cover from being automatically opened by non-human factors and causing safety hazards.

[0014] A method for controlling a shaft cage anti-falling and escape integrated equipment, using the shaft cage anti-falling and escape integrated equipment as described above, the steps of which are:

[0015] Step 1: The lifting wire rope is suddenly disconnected due to force majeure or operating error. The connected cage loses weight and the strong return spring is instantly forced to return to its original position. The connecting rod moves downward under the action of the return tension.

[0016] Step 2: The brake rocker arm rotates counterclockwise around the first pin shaft under the squeezing action of the connecting rod, driving the rocker arm hook and the clamping plate to cooperate and clamp, thereby achieving instant braking of the cage structure;

[0017] Step 3: The trapped person opens the escape ladder cover by rotating the handle downwards, and climbs out of the cage top with the help of the handrail inside the car and the climbing ladder on the escape ladder cover;

[0018] Step 4: The trapped personnel continue to climb out of the shaft in sequence along a series of escape ladders welded under the outer frame, thereby achieving the escape function;

[0019] Step 5: After all the trapped people have managed to save themselves, the rescue and maintenance personnel will transport maintenance materials through the escape ladder and replace the new wire rope. After confirming safety, they will climb out of the shaft again through the escape ladder;

[0020] Step 6: Restart the motor to drive the new wire rope. The wire rope pulls the connecting rod to cause the rocker hook and the clamping plate to disengage and reset. At this time, the strong reset spring is stretched to the predetermined stress value again, thus realizing the reset function of the equipment.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, when the steel wire rope suddenly breaks and causes the cage to lose weight instantly, the connecting plate that loses the pulling force of the steel wire rope will also be instantly moved downward by the tensile tension of the strong reset spring, thereby driving the two brake rocker arms to rotate counterclockwise around the first pin shaft. When the brake rocker arm drives the rocker arm hook to rotate upward, it will cooperate with a certain clamping plate in time to realize the cage to stop quickly in an instant. The overall structure has high sensitivity, the braking effect is instantly activated, and it is safe and reliable.

[0023] 2. The trapped personnel can easily open the escape ladder cover by turning the handle on the escape ladder cover on the top of the cage downwards, and can smoothly climb to the top of the cage with the help of the handrail in the cage and the climbing ladder on the escape ladder cover. They can also use the escape ladder board to climb out of the shaft in time to escape and realize rapid self-rescue. It is easy to operate and has strong timeliness.

[0024] 3. Rescue and maintenance personnel can use the escape ladder to transport maintenance materials conveniently and quickly, and timely repair and replace new wire ropes to restore the cage lifting function as soon as possible. The whole process saves time and effort, and greatly saves maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the three-dimensional structure of the outer frame of the wellbore of the present invention;

[0027] Figure 3 It is an exploded view of the outer frame of the wellbore of the present invention;

[0028] Figure 4 It is a schematic diagram of the three-dimensional structure of the cage of the present invention;

[0029] Figure 5 It is a partial schematic diagram of the three-dimensional structure of the connection between the brake device and the cage of the present invention;

[0030] Figure 6 It is a schematic diagram of the three-dimensional structure of the brake device of the present invention;

[0031] Figure 7 It is a schematic diagram of the three-dimensional structure of the escape ladder cover of the present invention.

[0032] In the figure: 1. first square tube; 2. second square tube; 3. third square tube; 4. fourth square tube; 5. escape ladder plate; 6. clamping plate; 7. cage; 8. guide rail beam; 9. lifting beam; 10. cutout; 11. diagonal bracing beam; 12. escape ladder cover; 13. handrail; 14. connecting plate; 15. connecting rod; 16. connecting block; 17. brake rocker arm; 18. limiting hole; 19. first pin shaft; 20. rocker arm hook; 21. second pin shaft; 22. strong return spring; 23. hinge; 24. climbing ladder; 25. handle. DETAILED DESCRIPTION

[0033] 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.

[0034] Example

[0035] See also Figure 1-7 The present invention provides a technical solution: an integrated equipment for preventing a tank cage from falling and escaping from a wellbore, comprising an outer frame of the wellbore, a starting motor, a steel wire rope and a tank cage 7, wherein the starting motor is fixedly connected to the top of the outer frame of the wellbore and is fixedly connected to the tank cage 7 through the steel wire rope, and a braking device for braking the tank cage 7 is arranged above the tank cage 7, the braking device comprises two connecting plates 14, two connecting rods 15, a connecting block 16, two brake rocker arms 17 and two rocker arm hooks 20. When in use, when the steel wire rope suddenly breaks and causes the tank cage 7 to fall rapidly, the connecting plate 14 which loses the tension of the steel wire rope moves downward under the action of the resetting component, and the connecting plate 14 drives the two brake rocker arms 17 to rotate downward around the first pin shaft 19, and the brake rocker arm 17 drives the rocker arm hook 20 to clamp upward with the clamping plate 6 to realize the braking of the tank cage 7, and then the tank cage 7 can be safely climbed. The personnel can pull the handle 25 provided on the escape ladder cover 12 on the top of the cage 7 through the climbing handrail 13, thereby flipping the escape ladder cover 12 downward, climbing up along the climbing ladder 24, and reaching the top of the cage 7, and then climbing the escape ladder shaft through the pre-arranged escape ladder plate 5, so that the occupants in the cage 7 can save themselves and avoid the cage 7 from falling again to cause secondary injuries. The safety and practicality are high. After all the trapped personnel have saved themselves, the rescue and maintenance personnel transport maintenance materials through the escape ladder plate 5 and replace new wire ropes. After confirming safety, they climb out of the shaft from the escape ladder plate 5 again, restart the motor to drive the new wire rope, and the wire rope pulls the connecting rod 15 to cause the rocker arm hook 20 to disengage and reset from the clamping plate 6. At this time, the strong reset spring 22 is stretched to the predetermined stress value again, thereby realizing the reset effect of the equipment.

[0036] In this embodiment, specifically: guide rail beams 8 are fixedly connected to both sides of the cage 7, and the guide rail beams 8 are connected to the outer frame of the wellbore to enable the cage 7 to slide up and down;

[0037] In this embodiment, specifically: a lifting beam 9 is fixedly connected between the two guide rail beams 8, two cutouts 10 are provided on the top of the lifting beam 9, and a diagonal bracing beam 11 is obliquely provided between the lifting beam 9 and the guide rail beam 8;

[0038] In this embodiment, specifically: the top of the cage 7 is connected to the escape ladder cover 12 by rotating inwardly through the hinge 23, and the middle positions of the four sides of the cage 7 are provided with handrails 13;

[0039] In this embodiment, specifically: the connecting rod 15 is slidably connected inside the incision 10, the top of the connecting rod 15 is provided with a through hole for connecting with the wire rope, the bottom of the connecting rod 15 is fixedly connected with the two connecting plates 14, the bottoms of the two connecting plates 14 are fixedly connected with the connecting block 16, and the bottom of the connecting block 16 is provided with a through hole for connecting with the reset component;

[0040] In this embodiment, specifically: the reset component is set as a strong reset spring 22, and the other end of the strong reset spring 22 is fixedly connected to the lifting ring on the top of the cage 7. In particular, when the hydraulic environment of the wellbore is relatively complex, the strong reset spring 22 will have certain fatigue damage or corrosion during long-term use. Here, an alternative structure can be recommended - a gravity hammer, that is, a heavy hammer of a certain weight is suspended in the through hole at the bottom of the connecting block 16 by a steel wire rope, which plays the same instantaneous reset effect as the strong reset spring 22;

[0041] In this embodiment, specifically: two connecting plates 14 are rotatably connected to two brake rocker arms 17 via a second pin shaft 21, a limiting hole 18 is provided on the brake rocker arm 17, and the second pin shaft 21 slides in the limiting hole 18 to achieve distance compensation;

[0042] In this embodiment, specifically: the brake rocker arm 17 is rotatably connected to the corresponding diagonal support beam 11 through the first pin shaft 19, and the rocker arm hook 20 is fixedly connected to the bottom of the brake rocker arm 17;

[0043] In this embodiment, specifically: the rocker hook 20 is set in a V shape to achieve a close fit with the clamping plate 6;

[0044] In this embodiment, specifically: the outer frame of the wellbore includes four first square tubes 1 and multiple second square tubes 2, the four first square tubes 1 and the multiple second square tubes 2 are welded to each other, and the inner sides of the second square tubes 2 on the left and right sides are welded with two third square tubes 3 and two fourth square tubes 4 in sequence;

[0045] In this embodiment, specifically: a series of small equidistant clamps 6 are fixedly connected between the two third-party tubes 3 and the corresponding two fourth-party tubes 4. The clamps 6 are closely matched with the rocker hooks 20 to achieve the braking of the cage 7. The bottom of the clamps 6 is provided with an inclined portion for easy resetting.

[0046] In this embodiment, specifically: a series of relatively large and equidistant escape ladders 5 are fixedly connected from top to bottom between the two first square tubes 1 on the left side until they are close to the shaft bottom plate, and this end position is roughly equal to the height of the cage 7 from the shaft bottom plate. At the same time, a handrail hole is provided on the sheet metal structure on one side of the escape ladder 5 to assist in climbing up and down;

[0047] In this embodiment, specifically: two climbing ladders 24 are fixedly connected to the top of the escape ladder cover 12, and two handles 25 are rotatably connected to the top and bottom of the escape ladder cover 12 through a through-pin shaft, and the escape ladder cover 12 can be flipped downward by rotating the handle 25 at the bottom and pulling it downward. Similarly, in combination with the inevitable mechanical vibration or shaking during the actual lifting process of the cage 7, the handle member can be replaced with other similar simple locking devices to prevent the escape ladder cover 12 from being automatically opened by non-human factors and causing safety hazards;

[0048] A method for controlling a shaft cage anti-fall and escape integrated device, the steps of which are:

[0049] Step 1: The lifting wire rope is suddenly disconnected due to force majeure or operating error, the connected cage 7 loses weight and the strong return spring 22 is instantly forced to return to its original position, and the connecting rod 15 moves downward under the action of the return tension;

[0050] Step 2: The brake rocker arm 17 rotates counterclockwise around the first pin 19 under the squeezing action of the connecting rod 15, driving the rocker arm hook 20 to cooperate with the clamping plate 6 to achieve instant braking of the cage 7 structure;

[0051] Step 3: The trapped person opens the escape ladder cover 12 downward by rotating the handle 25, and climbs out of the top of the cage 7 with the help of the handrail 13 in the car 7 and the climbing ladder 24 on the escape ladder cover 12;

[0052] Step 4: The trapped personnel continue to climb out of the shaft in sequence along a series of escape ladders 5 welded under the outer frame, thereby achieving the escape function;

[0053] Step 5: After all the trapped people have achieved self-rescue, the rescue and maintenance personnel transport maintenance materials through the escape ladder 5, replace the new wire rope, and climb out of the shaft again from the escape ladder 5 after confirming safety;

[0054] Step 6: Restart the motor to drive the new steel wire rope, which pulls the connecting rod 15 to disengage the rocker hook 20 from the clamping plate 6 and reset. At this time, the strong reset spring 22 is stretched to the predetermined stress value again, thereby achieving the reset effect of the equipment.

[0055] The present invention is in operation: when in use, when the steel wire rope suddenly breaks and causes the cage 7 to lose weight instantly, the connecting plate 14 that loses the pulling force of the steel wire rope will also instantly move downward under the tensile tension of the strong reset spring 22, and the connecting plate 14 drives the two brake rocker arms 17 to rotate downward around the first pin 19, and the brake rocker arm 17 drives the rocker arm hook 20 to rotate counterclockwise and engage with a certain clamping plate 6, completing the instant braking of the cage 7, achieving an important instant braking effect. At this time, the trapped personnel can directly turn the handle 25 provided on the escape ladder cover 12 at the top of the cage 7, so that the escape ladder cover 12 is turned downward, and then climb to the top of the cage 7 along the climbing ladder 24 with the help of the handrail 13, and then continue to climb through the pre-set escape ladder plate 5 to escape the shaft in time, and all trapped personnel complete self-rescue, achieving a practical escape effect. After all the trapped persons have achieved self-rescue, the rescue and maintenance personnel can transport maintenance materials through the escape ladder 5, replace the new wire rope, and pull the connecting rod 15 again to drive the rocker arm hook 20 and the clamping plate 6 to smoothly disengage and reset. At this time, the strong reset spring 22 will be stretched to the predetermined stress value again, achieving a simple reset effect.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An integrated equipment for preventing a cage from falling and escaping from a wellbore, comprising an outer frame of the wellbore, a starting motor, a steel wire rope and a cage (7), wherein the starting motor is fixedly connected to the top of the outer frame of the wellbore and is fixedly connected to the cage (7) through the steel wire rope, characterized in that: Both sides of the cage (7) are fixedly connected with guide rail beams (8), which are connected to the outer frame of the wellbore to enable the cage (7) to slide up and down; a lifting beam (9) is fixedly connected between the two guide rail beams (8), and two cutouts (10) are provided on the top of the lifting beam (9), and a diagonal bracing beam (11) is obliquely arranged between the lifting beam (9) and the guide rail beam (8); the top of the cage (7) is connected to an escape ladder cover (12) by rotating inwardly through a hinge (23), and handrails (13) are arranged in the middle of the four sides of the cage (7); the top of the cage (7) is provided with a plurality of handles (13). A braking device for braking the cage (7) is provided, the braking device comprising two connecting plates (14), two connecting rods (15), a connecting block (16), two brake rocker arms (17) and two rocker arm hooks (20), the connecting rod (15) is slidably connected inside the incision (10), a through hole is provided on the top of the connecting rod (15) for connecting with a steel wire rope, the bottom of the connecting rod (15) is fixedly connected to the two connecting plates (14), the bottom of the two connecting plates (14) is fixedly connected to the connecting block (16), and the bottom of the connecting block (16) is provided with a through hole for connecting with a reset component.

2. The integrated equipment for preventing and escaping a wellbore cage from falling according to claim 1 is characterized in that: The reset component is configured as a strong reset spring (22), and the other end of the strong reset spring (22) is fixedly connected to a lifting ring on the top of the cage (7).

3. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 1 is characterized in that: Two brake rocker arms (17) are rotatably connected between the two connecting plates (14) via a second pin shaft (21); a limiting hole (18) is provided on the brake rocker arm (17); and the second pin shaft (21) slides in the limiting hole (18) to achieve distance compensation.

4. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 3 is characterized in that: The brake rocker arm (17) is rotatably connected to the corresponding diagonal support beam (11) via a first pin shaft (19), and the rocker arm hook (20) is fixedly connected to the bottom of the brake rocker arm (17).

5. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 4 is characterized in that: The rocker hook (20) is configured in a V shape to achieve a tight fit with the clamping plate (6).

6. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 5, characterized in that: The shaft outer frame comprises four first square tubes (1) and a plurality of second square tubes (2), the four first square tubes (1) and the plurality of second square tubes (2) being welded to each other, and two third square tubes (3) and two fourth square tubes (4) being welded to the inner sides of the second square tubes (2) on the left and right sides in sequence.

7. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 6, characterized in that: A series of relatively small equidistant clamping plates (6) are fixedly connected between the two third-party tubes (3) and the corresponding two fourth-party tubes (4). The clamping plates (6) are tightly matched with the rocker hooks (20) to achieve the braking of the cage (7). The bottom of the clamping plates (6) is provided with an inclined surface for facilitating resetting.

8. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 7, characterized in that: A series of relatively large and equidistant escape ladders (5) are fixedly connected between the two first square tubes (1) on the left until they are close to the shaft bottom plate, and this end position is roughly equal to the height of the cage (7) from the shaft bottom plate.

9. The integrated equipment for preventing and escaping a cage from falling in a shaft according to claim 1, characterized in that: The top of the escape ladder cover (12) is fixedly connected to two climbing ladders (24), and the top and bottom of the escape ladder cover (12) are rotatably connected to two handles (25) via a penetrating pin shaft, and the escape ladder cover (12) can be flipped downward by rotating the handle (25) at the bottom and pulling it downward.

10. A method for controlling integrated equipment for preventing and escaping a wellbore cage, characterized in that: The steps of using the integrated equipment for preventing the shaft cage from falling and escaping as claimed in claim 8 are as follows: Step 1: The lifting wire rope is suddenly disconnected due to force majeure or operating error, the connected cage (7) loses weight and the strong return spring (22) is instantly forced to return, and the connecting rod (15) moves downward under the action of the return tension; Step 2: The brake rocker arm rotates counterclockwise around the first pin shaft (19) under the squeezing action of the connecting rod (15), driving the rocker arm hook (20) and the clamping plate (6) to achieve mutual engagement and locking, thereby achieving an instant brake stop of the cage (7) structure; Step 3: The trapped person opens the escape ladder cover (12) downward by rotating the handle (25), and climbs out of the top of the cage (7) with the help of the handrail (13) in the car (7) and the climbing ladder (24) on the escape ladder cover (12); Step 4: The trapped personnel continue to climb out of the shaft in sequence along a series of equidistant escape ladders (5) welded under the outer frame, thereby achieving the escape function; Step 5: After all the trapped people have managed to rescue themselves, the rescue and maintenance personnel will transport the maintenance materials through the escape ladder (5), replace the new wire rope, and climb out of the shaft again from the escape ladder (5) after confirming safety; Step 6: Restart the motor to drive the new steel wire rope, which pulls the connecting rod (15) to cause the rocker hook (20) to be disengaged from the clamping plate (6) and reset. At this time, the strong reset spring (22) is stretched to a predetermined stress value again, thereby achieving the reset effect of the equipment.

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