Damping assembly of automatic rope winding descent control device for rock climbing

Abstract

The invention belongs to the field of human body air safety protection devices, and particularly relates to a rock climbing automatic rope winding descent control device damping assembly which comprises a centrifugal telescopic piece assembly (3), a first magnet fixing disc (4), a second magnet fixing disc (5) and a damper cavity (1) with a damper shaft (2) arranged at the axis. The damper shaft (2) is fixedly sleeved with a damper wheel disc gear (6) and a one-way bearing (7) in sequence; the centrifugal telescopic piece assembly (3) comprises a base (301), an upper sliding disc (302) and a lower sliding disc (303). The base (301) is fixedly sleeved with the outer ring of the one-way bearing (7); a centrifugal telescopic piece (304) is arranged between the upper sliding disc (302) and the lower sliding disc (303). The device is small in size, high in reliability, high in safety, high in stability, ideal in working efficiency, long in service life and convenient to operate and maintain.

Description

Technical Field

[0001] The invention belongs to the field of human aerial safety protection devices, and in particular relates to a rock climbing automatic rope retracting and descending device damping component. Background Art

[0002] When conducting rock climbing training in firefighting and other fields, the climbing objects are mainly rock cliffs or artificial rock walls. When climbing, the trainees only rely on the balance of their hands, feet and body to move upward. The hands and arms must use various force methods according to the different fulcrums, such as grabbing, holding, hanging, pulling, supporting, pushing, pressing, etc., so the strength requirements and body flexibility requirements are relatively high. In order to ensure the safety of personnel, the existing training model generally requires rock climbers to wear safety belts and protection ropes, and be equipped with ropes to avoid danger. However, the above protection measures are very inconvenient to use, and the training efficiency is greatly restricted.

[0003] In addition, in the field of fire emergency rescue, there is a serious imbalance between the current emergency rescue equipment capabilities and the rapid development of high-rise buildings in my country. First, the lifting capacity of the equipment lags far behind the height development of high-rise buildings. The current highest ladder truck has a lifting capacity of only about 15 floors. For fires in higher high-rise buildings, these emergency rescue equipment can only "look at the building and sigh"; second, the equipment is large in size and has poor mobility. It is seriously affected by road traffic and the surrounding environment of the building. It is often delayed due to complex terrain and obstacles. Third, the rescue capacity of the equipment is poor. The existing ladder truck can only rescue 2 to 3 people at a time. Once a high-rise fire occurs, it cannot meet the actual rescue needs on the scene. At present, escape slow-down devices are mainly divided into the following categories: (1) reciprocating slow-down devices; slow-down devices that can be used up and down reciprocatingly are mainly composed of four parts: speed controller, safety belt, safety hook, and rescue rope. Reciprocating slow-down devices generally include planetary gear slow-down devices and gear slow-down devices, and their working principles are similar. (2) Self-rescue slow-down devices, which cannot be used reciprocatingly. The rope of the self-rescue descent control device is fixed, and the speed control mechanism moves up and down synchronously with the person. The descent speed must be controlled by a person. The operator can be the escapee himself or a rescuer on the ground.

[0004] Chinese patent CN217745392U discloses a rock climbing automatic rope retracting type descender, comprising a shell; the shell is divided into a flat belt wheel disc working chamber and a damping and deceleration working chamber; a main shaft is fixedly arranged transversely in the flat belt wheel disc working chamber; an elastic force recovery component, a flat belt wheel disc and a flat belt wheel disc large gear are arranged on the main shaft in sequence; the flat belt wheel disc is movably connected to the main shaft; the flat belt wheel disc large gear is fixedly connected to the side wall of the flat belt wheel disc; a brake shaft is transversely arranged in the middle area of ​​the damping and deceleration working chamber; the brake shaft is movably connected to the cavity walls of the flat belt wheel disc working chamber and the damping and deceleration working chamber respectively; the brake wheel disc gear and the one-way bearing are fixedly sleeved on the brake shaft in sequence; the centrifugal expansion sheet assembly is fixedly sleeved with the outer ring of the one-way bearing; magnet fixing plates are fixedly arranged at a certain gap on both sides of the centrifugal expansion sheet assembly; magnet assemblies are circumferentially fixedly arranged at corresponding positions on the magnet fixing plate; a flat belt outlet is arranged at the bottom of the shell; and a flat belt is wound around the flat belt wheel disc. The device is designed by combining the centrifugal expansion piece assembly and the magnet fixing plate. The damping plate and the magnet are not in contact and there is no sliding friction, which can achieve the purpose of long equipment life and stable tension control. The device sets a one-way bearing with dual functions on the brake shaft in the damping and deceleration working chamber. When the flat belt wheel rotates forward around the main shaft due to the gravity of the flat belt, the coil spring is in the energy storage state, and the centrifugal expansion piece assembly is driven by the positively locked one-way bearing to realize the system damping and slowing down function; when the coil spring is in the flat belt storage state, the coil spring releases the accumulated energy. At this time, the one-way bearing is forced to rotate in the reverse direction. In the case that the one-way bearing lacks the resistance of the centrifugal expansion piece assembly, the flat belt storage operation can be completed quickly.

[0005] Although the above equipment solves the problems of large friction material consumption, low safety factor of the equipment, poor reliability, slow rope storage speed and unsatisfactory operation efficiency to a certain extent during the slow descent, etc., since the centrifugal expansion piece assembly adopts a composite structure design of the first centrifugal piece, the second centrifugal piece and the third centrifugal piece and the first centrifugal seat tension spring, the second centrifugal seat tension spring and the third centrifugal seat tension spring, the first centrifugal piece, the second centrifugal piece and the third centrifugal piece check and balance each other and operate in coordination, once a certain structural unit is blocked, it will affect the normal operation of the centrifugal expansion piece assembly, and the stability and safety of the system are subject to certain restrictions. Summary of the invention

[0006] The present invention aims to overcome the deficiencies of the prior art and provide a rock climbing automatic rope retracting and descending device damping component which has small size, strong reliability, high safety, strong stability, ideal operating efficiency, long service life, and convenient operation and maintenance.

[0007] To solve the above technical problems, the present invention is achieved as follows: The rock climbing automatic rope retracting and descending device damping assembly comprises a centrifugal expansion plate assembly, a first magnet fixing plate, a second magnet fixing plate and a damper cavity with a damper shaft at the axis; a damper wheel gear and a one-way bearing are fixedly sleeved on the damper shaft in sequence; the first magnet fixing plate and the second magnet fixing plate are symmetrically arranged and spaced apart by a certain gap; magnet assemblies are circumferentially fixedly arranged at corresponding positions on the first magnet fixing plate and the second magnet fixing plate; The centrifugal expansion piece assembly includes a base, an upper sliding plate and a lower sliding plate; the base is fixedly sleeved with the outer ring of the one-way bearing; the upper sliding plate and the lower sliding plate are spaced apart from each other by a certain gap and fixedly sleeved on the base; a centrifugal expansion piece is provided between the upper sliding plate and the lower sliding plate; the centrifugal expansion piece is radially connected to the base through an elastic recovery component and its two side surfaces are radially slidably matched with the upper sliding plate and the lower sliding plate respectively.

[0008] As a preferred solution, the centrifugal expansion piece is radially provided with a columnar assembly groove; the elastic return component includes a nut, a screw rod and a return spring sleeved on the screw rod; the elastic return component is embedded in the columnar assembly groove, the lower end of the return spring is clamped with the columnar assembly groove, and the lower end of the screw rod is fixedly connected to the base.

[0009] Furthermore, a guide column is longitudinally fixedly provided on the centrifugal expansion piece; a guide groove is provided on the upper sliding plate at a position corresponding to the guide column; and the guide column is slidably connected to the guide groove.

[0010] Furthermore, the number of the centrifugal expansion pieces is 4, all of which are fan-shaped structures, and the central angles of the pieces are all 90°.

[0011] Furthermore, the number of the guide posts is 2, and the number of the guide grooves is 2.

[0012] Furthermore, fastening bolts are circumferentially fixed between the upper sliding plate and the lower sliding plate.

[0013] Furthermore, a guide column is longitudinally fixedly provided on the upper sliding plate; a guide groove is provided on the centrifugal expansion piece at a position corresponding to the guide column; and the guide column is slidably connected to the guide groove.

[0014] Furthermore, the guide groove adopts a long hole structure.

[0015] The present invention has small size, high reliability, high safety, strong stability, ideal operating efficiency, long service life, and convenient operation and maintenance. The present invention adopts a combined design of a centrifugal expansion piece assembly and a magnet fixing plate, so that the damping plate and the magnet do not contact and there is no sliding friction, thereby achieving the purpose of long equipment life and stable tension control. The centrifugal expansion piece assembly of the present invention adopts a modular redundant design of the centrifugal expansion piece assembly, so that each structural unit ensures the realization of the centrifugal damping function, and each structural unit is relatively independent, and any failure of any structural unit does not affect the realization of the centrifugal damping function of other structural units. Therefore, while the system realizes stable tension control, the structural stability and safety are significantly improved. In addition, if any of the structural units has a problem and needs to be repaired and replaced, only the defective module needs to be processed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. The protection scope of the present invention is not limited to the following description.

[0017] Figure 1 It is a schematic diagram of the overall assembly of the present invention; Figure 2 It is a schematic diagram of the structure of the centrifugal expansion piece of the present invention.

[0018] In the figure: 1. damper cavity; 2. damper shaft; 3. centrifugal expansion piece assembly; 301. base; 302. upper sliding plate; 303. lower sliding plate; 304. centrifugal expansion piece; 305. elastic recovery assembly; 306. columnar assembly groove; 4. first magnet fixing plate; 5. second magnet fixing plate; 6. damper wheel gear; 7. one-way bearing; 8. magnet assembly; 9. nut; 10. screw; 11. return spring; 12. guide column; 13. guide groove; 14. fastening bolt. DETAILED DESCRIPTION

[0019] The following is combined with Figures 1-2The principles and features of the present invention are described, and the examples are only used to explain the present invention and are not used to limit the scope of the present invention. The present invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. According to the following description and claims, the advantages and features of the present invention will be clearer. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present invention. It should be noted that when a component is referred to as "fixed to" another component, it can be directly on the other component or there can also be a central component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a central component at the same time. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be a central component at the same time. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0020] The present invention is aimed at improving the damping component in Chinese patent CN217745392U, and the other supporting structures of the descender are the same as those in the above patent. In combination with Chinese patent CN217745392U, the rock climbing automatic rope retracting descender includes a housing; the housing is divided into a flat belt wheel working chamber and a damping and deceleration working chamber; a main shaft is fixedly arranged transversely in the flat belt wheel working chamber; an elastic force recovery component, a flat belt wheel and a flat belt wheel large gear are arranged on the main shaft in sequence; the flat belt wheel is connected to the main shaft movable shaft; the flat belt wheel large gear is fixedly connected to the side wall of the flat belt wheel. See Figures 1-2As shown, the damping assembly of the automatic rope retracting and descending device for rock climbing comprises a centrifugal expansion sheet assembly 3, a first magnet fixing plate 4, a second magnet fixing plate 5 and a damper cavity 1 with a damper shaft 2 arranged at the axis; the two ends of the damper shaft 2 are respectively movably connected to the cavity walls of the flat belt wheel working cavity and the damping and deceleration working cavity in the above-mentioned automatic rope retracting and descending device for rock climbing; the damper wheel gear 6 and the one-way bearing 7 are fixedly sleeved on the damper shaft 2 in sequence; the first magnet fixing plate 4 and the second magnet fixing plate 5 are symmetrically arranged and spaced apart by a certain gap; on the first magnet fixing plate 4 and the second magnet fixing plate 5 Magnet assemblies 8 are circumferentially fixed at corresponding positions; the centrifugal expansion piece assembly 3 includes a base 301, an upper sliding plate 302 and a lower sliding plate 303; the base 301 is fixedly sleeved with the outer ring of the one-way bearing 7; the upper sliding plate 302 and the lower sliding plate 303 are spaced apart from each other by a certain gap and fixedly sleeved on the base 301; a centrifugal expansion piece 304 is provided between the upper sliding plate 302 and the lower sliding plate 303; the two side surfaces of the centrifugal expansion piece 304 are radially slidably matched with the upper sliding plate 302 and the lower sliding plate 303 respectively, and are radially connected to the base 301 through an elastic recovery assembly 305.

[0021] See also Figure 2 As shown, the centrifugal expansion piece 304 of the present invention is radially provided with a columnar assembly groove 306; the elastic recovery component 305 includes a nut 9, a screw rod 10 and a recovery spring 11 sleeved on the screw rod 10; the elastic recovery component 305 is embedded in the columnar assembly groove 306, the lower end of the recovery spring 11 is clamped with the inner wall of the columnar assembly groove 306, and the lower end of the screw rod 10 extends out of the columnar assembly groove 306 and is fixedly connected with the base 301. When the centrifugal expansion piece 304 gradually extends outward under high-speed rotation, the recovery spring 11 in the columnar assembly groove 306 can provide a reverse recovery force for the centrifugal expansion piece 304. Once the rotation speed of the centrifugal expansion piece 304 decreases, the recovery spring 11 in the columnar assembly groove 306 can gradually reset the centrifugal expansion piece 304. The guide groove is designed to be a long hole shape, which can facilitate the travel of the guide column.

[0022] In the specific design, in order to ensure the smooth operation of the centrifugal expansion piece 304, the present invention longitudinally fixes a guide column 12 on the centrifugal expansion piece 304; a guide groove 13 is provided on the upper sliding plate 302 corresponding to the position of the guide column 12; the guide column 12 and the guide groove 13 are slidably connected.

[0023] The number of centrifugal expansion pieces 304 described in the present invention is 4, all of which are fan-shaped structures, and the central angles of the circles are all 90°. The number of guide posts 12 described in the present invention is 2, and the number of guide grooves 13 is 2. The guide groove adopts a long hole structure. In order to further enhance the structural stability of the centrifugal expansion piece assembly 3, a fastening bolt 14 is circumferentially fixed between the upper sliding plate 302 and the lower sliding plate 303. Of course, in the specific design, as a structural choice, it can also be considered to longitudinally fix a guide post on the upper sliding plate 302; a guide groove is provided on the centrifugal expansion piece 304 corresponding to the position of the guide post; and the guide post is slidably connected to the guide groove.

[0024] Combined with Chinese patent CN217745392U, during the specific operation of the present invention, the ear of the automatic rope retracting and descending device for rock climbing is fixed to a certain place on the rock in the rock climbing area. The escapee fastens the safety flat belt. Under the action of gravity, the flat belt of the automatic rope retracting and descending device for rock climbing drives the flat belt wheel and the flat belt wheel large gear to rotate positively around the main shaft, and drives the centrifugal expansion piece assembly to rotate around the damper shaft through the positively locked one-way bearing set on the damper shaft in the damping and deceleration working chamber to realize the system damping and descending function; when the centrifugal expansion piece assembly rotates at a high speed, the centrifugal expansion piece 304 will gradually slide and open between the upper sliding plate 302 and the lower sliding plate 303 along the direction of the guide column 12 under the influence of centrifugal factors, and when approaching the magnet assembly 8 on the first magnet fixing plate 4 and the second magnet fixing plate 5, the medium magnetic field generated by the magnet assembly 8 can form a reverse torque applied to the flat belt wheel of the automatic rope retracting and descending device for rock climbing through the action of the centrifugal expansion piece 304. Through the tension control of this system, the descending speed of the flat belt can be effectively adjusted, so that the operator can fall smoothly to a safe area. When the coil spring is in the flat belt storage state, the coil spring releases the accumulated energy. At this time, the one-way bearing is forced to idling in the reverse direction. In the case that the one-way bearing lacks the resistance of the centrifugal expansion plate assembly, the flat belt storage operation can be completed quickly. When the falling operation suddenly encounters an emergency, the one-way anti-falling lock tongue located in the one-way anti-falling lock tongue guide rail is centrifugal and gradually slides out a length radially. The high-speed rotating one-way anti-falling lock tongue and the ratchet groove in the one-way anti-falling lock pin interact with each other to control the descending speed of the operator in a one-way emergency, thereby ensuring the absolute safety of the operator. The rock climbing automatic rope retracting and descending device damping assembly of the present invention is an emergency escape safety and life-saving assembly that allows rock climbers to slowly descend from high-altitude rocks with the flat belt. Of course, it can also be used when a fire occurs in a high-rise building, so that trapped people can escape from the fire scene safely and quickly.

[0025] 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. The rock climbing automatic rope retracting and descending device damping assembly is characterized by: The invention comprises a centrifugal expansion plate assembly (3), a first magnet fixing plate (4), a second magnet fixing plate (5), and a damper cavity (1) with a damper shaft (2) arranged at its axis; a damper wheel gear (6) and a one-way bearing (7) are sequentially fixedly sleeved on the damper shaft (2); the first magnet fixing plate (4) and the second magnet fixing plate (5) are symmetrically arranged and spaced apart by a certain gap; magnet assemblies (8) are circumferentially fixedly arranged at corresponding positions on the first magnet fixing plate (4) and the second magnet fixing plate (5); The centrifugal expansion piece assembly (3) comprises a base (301), an upper sliding plate (302) and a lower sliding plate (303); the base (301) is fixedly sleeved with the outer ring of the one-way bearing (7); the upper sliding plate (302) and the lower sliding plate (303) are spaced apart from each other by a certain gap and are fixedly sleeved on the base (301); a centrifugal expansion piece (304) is provided between the upper sliding plate (302) and the lower sliding plate (303); the centrifugal expansion piece (304) is radially connected to the base (301) through an elastic recovery assembly (305), and its two side surfaces are radially slidably matched with the upper sliding plate (302) and the lower sliding plate (303) respectively.

2. The rock climbing automatic rope retracting and descending device damping assembly according to claim 1 is characterized by: The centrifugal expansion piece (304) is radially provided with a columnar assembly groove (306); the elastic recovery component (305) comprises a nut (9), a screw rod (10) and a recovery spring (11) sleeved on the screw rod (10); the elastic recovery component (305) is embedded in the columnar assembly groove (306), the lower end of the recovery spring (11) is clamped with the columnar assembly groove (306), and the lower end of the screw rod (10) is fixedly connected with the base (301).

3. The rock climbing automatic rope retracting and descending device damping assembly according to claim 2 is characterized by: A guide column (12) is longitudinally fixedly provided on the centrifugal expansion piece (304); a guide groove (13) is provided on the upper sliding plate (302) at a position corresponding to the guide column (12); and the guide column (12) and the guide groove (13) are slidably connected.

4. The rock climbing automatic rope retracting and descending device damping assembly according to claim 3 is characterized by: The number of the centrifugal expansion pieces (304) is four, all of which are in a fan-shaped structure, and the center angles of the circles are all 90°.

5. The rock climbing automatic rope retracting and descending device damping assembly according to claim 4, characterized in that: The number of the guide columns (12) is 2, and the number of the guide grooves (13) is 2.

6. The rock climbing automatic rope retracting and descending device damping assembly according to claim 5, characterized in that: Fastening bolts (14) are circumferentially fixed between the upper sliding plate (302) and the lower sliding plate (303).

7. The rock climbing automatic rope retracting and descending device damping assembly according to claim 2, characterized in that: A guide column is fixedly provided longitudinally on the upper sliding plate (302); a guide groove is provided on the centrifugal expansion piece (304) at a position corresponding to the guide column; and the guide column and the guide groove are slidably connected.

8. The rock climbing automatic rope retracting and descending device damping assembly according to any one of claims 1 to 7, characterized in that: The guide groove adopts a long hole structure.

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