CN102274591B - Escaping and rescuing descending lifeline - Google Patents

Abstract

The invention relates to an escape and rescue descending device, which belongs to the technical field of life-saving equipment or devices. The meshing connection greatly enhances the safety factor of the human body falling from a high place; the eccentric cam speed regulating device is used to control the descending speed of the rescued person and keep the descending speed within the safe speed range; the speed regulating device is used to make the The rescued person can adjust the descent speed by himself. The escape rescue device of the present invention has the advantages of simple structure, reliable operation, convenient operation, low failure rate, quick escape and rescue, easy manufacturing and processing, and low cost, which is very favorable for popularization and implementation.

Description

An escape and rescue descending device

technical field

The invention relates to an escape and rescue descending device, which belongs to the technical field of lifesaving equipment or devices.

Background technique

In recent years, the city has developed rapidly, and there are many tall buildings, and fires also occur from time to time. How to escape from high places in a fire has become the focus of the public at present. The traditional fast escape method is to escape through facilities such as soft ladders and life-saving bags, but these facilities are expensive, take up a lot of space, and are inconvenient to use, especially for the elderly and weak.

Most of the currently disclosed escape devices adopt the principle of double-rope intertwining, but the traditional double-rope intertwining escape device has low reliability and poor safety, and it has the following disadvantages when it is put into practical use: 1. Two ropes in the sky are easy to 2, the falling speed is difficult to control; 3, the sliding friction of the rope produces a large amount of heat, and the lifeline is easily worn off, causing people to fall, injure and disable. Although some escape devices are equipped with additional rope clamping devices to improve reliability, such escape devices generally have the disadvantage of unnecessary waste of materials, which doubles the production cost of the product and is not conducive to popularization. use. Simultaneously reciprocating use of the same set of life-saving devices not only wastes precious time during disasters, but also increases the risk factor of people being in danger. In addition, quite a large part of the above two escape devices do not have the function of self-speed control, so the psychological burden of escapers is heavy, which is not conducive to the implementation of self-rescue.

Contents of the invention

Aiming at the deficiencies of the prior art, the present invention provides a material-saving, low-friction coefficient, speed-controllable, high-reliability, and high-safety escape and rescue slow descent device.

Technical scheme of the present invention is as follows:

An escape and rescue descent device, comprising a housing, a clamping mechanism and a deceleration mechanism, the clamping mechanism and the deceleration mechanism are arranged in the housing; the clamping mechanism includes a pair of large gears and a pair of small gears arranged symmetrically. Gears and 1 pair of pulleys, one large gear and one small gear are set on the same side, the large gear on the same side meshes with the small gear, the large gear is fixedly installed in the housing through the shaft, and the large gear shaft and the pinion shaft are connected through The rods are connected; the pinion on the same side is installed coaxially with the pulley; a pair of symmetrically arranged pulleys forms a through rope hole; the angle between the connecting rod and the horizontal is an acute angle;

The reduction mechanism includes a pair of piston dampers, which are respectively installed under the two large gears, the piston chamber of the piston damper is fixedly installed in the housing, and the piston end of the piston damper is arranged in the cam groove on the upper surface of the large gear .

The clamping mechanism also includes a pair of fixed rollers and a pair of movable pulleys arranged symmetrically, wherein one fixed roller and one movable pulley are arranged on the same side, the fixed rollers on the same side are tangent to the movable pulley, and the fixed roller passes through the shaft Fixedly installed in the housing, the fixed roller shaft on the same side is connected to the movable pulley shaft through a connecting rod, and a through auxiliary rope hole is formed between a pair of symmetrically arranged movable pulleys, which is opposite to the above-mentioned rope hole. The gear shaft is connected with the movable pulley shaft through a connecting rod. The connecting rods on the same side form three sides of a parallelogram, which can be deformed to reduce the distance between the opposite pulleys when stressed, thereby tightening the rescue rope and improving the safety of rescue.

The escape and rescue slow descender also includes an eccentric cam speed regulating device arranged below the rope hole, and the eccentric cam speed regulating device includes a fixed clamping block and a movable clamping block, and the fixed clamping block is fixedly arranged on the shell On the body, the movable clamping block is arranged on the shell through bolts, one end of the movable clamping block is connected with the shell through a spring, and the other end of the movable clamping block is arranged opposite to the fixed clamping block. The fixed clamping block and the movable clamping block in the eccentric cam speed regulating device are normally closed and tightened, and are used to tighten the rescue rope. The rescue rope can realize the purpose of self-controlling the descending speed: the spring deformation at one end of the movable clamping block is squeezed by the rescue rope, and the distance between the movable clamping block and the fixed clamping block increases, increasing the descending speed. speed.

Inside the housing, an anti-off buckle is provided on the axis opposite to the rope hole.

The upper end and the lower end in the housing are respectively provided with anti-off buckles. Avoiding the swing of the rope under the interference of external force greatly improves the safety factor of rescue and escape.

A rescue rope sleeve is fixedly arranged on the surface of the shell. The rescue rope cover can be of small size, and the rescued person can obtain effective rescue by grasping; the rescue rope cover can also be of large size, and the rescued person can put the rope cover around the waist to obtain effective rescue; The rescue rope cover is made into various shapes suitable for rescue such as school bag shoulder straps, and all belong to the protection scope of the present invention.

Working principle of the present invention:

When escaping and rescuing, just fix one end of the rescue rope, and pass the other end through the rope hole, the auxiliary rope hole and the anti-off buckle, and the rescued person is fixedly connected with the escape rescue slow descent device. When descending and escaping, When the rescue rope moves upward relative to the shell, the pulley is driven by the rescue rope to rotate counterclockwise, the pulley drives the small gear to rotate counterclockwise along the large gear, and the small gear drives the large gear; due to the cam groove arranged on the upper surface of the large gear It is connected with the piston damper, which effectively prevents the large gear from rotating too fast, thereby reducing the descending speed of the rescued person on the rescue rope.

The beneficial effects of the present invention are:

1. The slow descent device for escape rescue of the present invention uses the piston damper to decelerate safely, and the clamping mechanism is engaged with the deceleration mechanism, which greatly enhances the safety factor of the human body falling from a high place. It is different from the previous slow descent equipment for escape, reducing In the past, a large amount of heat was generated by sliding friction, and the heat generated by the friction would accelerate the aging of the steel wire rope and greatly reduce the safety factor. The present invention adopts rolling friction with small contact area and small friction force, which not only reduces the friction consumption of the rope , and will not generate excessive temperature, improve the service life of the rope.

2. The escape and rescue descending device of the present invention also has an eccentric cam speed regulating device, which makes the descending speed of the rescued person controllable and keeps the descending speed within a safe speed range.

3. The present invention adopts a single rope to slide down, which avoids the winding of reciprocating double ropes, and improves the safety factor in a large range.

4. The present invention adopts the anti-off buckle, which not only avoids the swing of the rope under the interference of external force, but also greatly improves the safety factor of rescue and escape.

5. The escape rescue device of the present invention is simple in structure, reliable in operation, convenient in operation, low in failure, quick in escape and rescue, easy to manufacture and process, and low in cost, which is very conducive to popularization and implementation.

Description of drawings

Fig. 1 is the structural representation of embodiment 1;

Fig. 2 is the structural representation of embodiment 2 (piston damper is omitted);

The structural representation of Fig. 3 embodiment 4;

Among them, 1. Shell; 2. Big gear; 3. Pulley; 4. Big gear shaft; 5. Pinion shaft; 6. Connecting rod; 7. Rope hole; 8. Piston damper; 9. Piston damper Piston cavity; 10, piston end of piston damper; 11, cam groove; 12, fixed roller; 13, movable pulley; 14, fixed roller shaft; 15, movable pulley shaft; 16, auxiliary rope hole; 17, fixed clamping 18. Movable clamping block; 19. Bolt; 20. Spring; 21. Anti-off buckle; 22. Pinion; 23. The other end of the movable clamping block; 24. One end of the movable clamping block .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but is not limited thereto.

Embodiment 1,

An escape and rescue slow down device, including a housing 1, a clamping mechanism and a deceleration mechanism. The clamping mechanism and the deceleration mechanism are arranged in the housing 1; the clamping mechanism includes a pair of large gears 2 symmetrically arranged , 1 pair of small gears 22 and 1 pair of pulleys 3, wherein a large gear 2 and a small gear 22 are arranged on the same side, and the large gear 2 on the same side meshes with the small gear 22, and the large gear 2 is fixedly installed on the shaft 4 In the housing 1, the large gear shaft 4 and the pinion shaft 5 are connected by a connecting rod 6; the pinion 22 on the same side is installed coaxially with the pulley 3; a pair of symmetrically arranged pulleys 3 forms a through rope hole 7; The angle between the connecting rod 6 and the horizontal is an acute angle;

The reduction mechanism includes a pair of piston dampers 8, which are respectively installed under the two large gears 2. The piston cavity 9 of the piston damper is fixedly installed in the housing 1, and the piston end 10 of the piston is arranged on the large gear 2. In the cam groove 11 on the upper surface.

Embodiment 2,

As described in embodiment 1, the escape and rescue descending device differs in that:

The clamping mechanism also includes a pair of fixed rollers 12 and a pair of movable pulleys 13 symmetrically arranged, wherein one fixed roller 12 and one movable pulley 13 are arranged on the same side, and the fixed roller 12 on the same side is in phase with the movable pulley 13 Cut, the fixed roller 12 is fixedly installed in the housing 1 through the shaft 14, the fixed roller shaft 14 on the same side is connected with the movable pulley shaft 15 through the connecting rod 6, and a pair of symmetrically arranged movable pulleys 13 forms a through auxiliary rope The hole 16 is up and down opposite to the said rope hole 7, and the pinion shaft 5 on the same side is connected to the movable pulley shaft 15 through the connecting rod 6. The connecting rods 6 on the same side form three sides of a parallelogram, which can be deformed to reduce the distance between the opposite pulleys when stressed, and then tighten the rescue rope to increase the safety of the descent.

Embodiment 3,

As described in Embodiment 2, the escape and rescue descending device differs in that:

The escape rescue slow descender also includes an eccentric cam speed regulating device arranged below the rope hole, and the eccentric cam speed regulating device includes a fixed clamping block 17 and a movable clamping block 18, and the fixed clamping block 17 is fixed Set on the shell 1, the movable clamping block 18 is set on the shell 1 through the bolt 19, one end 24 of the movable clamping block is connected with the shell 1 through the spring 20, and the other end 23 of the movable clamping block is connected with the fixed The clamping blocks 17 are oppositely arranged. The fixed clamping block 17 and the movable clamping block 18 in the eccentric cam speed regulating device are normally closed and tightened, and are used to tighten the rescue rope. The rescue rope of the whole body can realize the purpose of self-controlling the descending speed: the spring deformation at one end of the movable clamping block is squeezed by the rescue rope, and the distance between the movable clamping block and the fixed clamping block increases, increasing Great descent speed.

Embodiment 4,

As described in embodiment 3, the escape and rescue descending device differs in that:

On the upper end and the lower end of the housing 1 and on the axis opposite to the rope hole, an anti-escape buckle 21 is provided.

Embodiment 5,

As described in embodiment 1, the escape and rescue descending device differs in that:

A rescue rope cover is fixedly arranged on the surface of the casing 1 . The rescue rope cover can be of small size, and the rescued person can obtain effective rescue by grasping; the rescue rope cover can also be of large size, and the rescued person can put the rope cover around the waist to obtain effective rescue; The rescue rope cover is made into various shapes suitable for rescue such as school bag shoulder straps, and all belong to the protection scope of the present invention.

Claims (6)

1. An escape and rescue descent device, characterized in that it comprises a housing, a clamping mechanism and a deceleration mechanism, and a clamping mechanism and a deceleration mechanism are arranged in the housing; the clamping mechanism comprises a pair of symmetrically arranged Large gear, 1 pair of small gears and 1 pair of pulleys, of which 1 large gear and 1 small gear are set on the same side, the large gear on the same side meshes with the small gear, the large gear is fixedly installed in the housing through the shaft, and the large gear shaft It is connected with the pinion shaft through a connecting rod; the pinion on the same side is installed coaxially with the pulley; a through rope hole is formed between a pair of pulleys arranged symmetrically; the angle between the connecting rod and the horizontal is an acute angle; The reduction mechanism includes a pair of piston dampers, which are respectively installed under the two large gears. The piston chamber of the piston damper is fixedly installed in the housing, and the piston end of the piston is arranged in the cam groove on the upper surface of the large gear. 2. The escape and rescue descending device according to claim 1, wherein the clamping mechanism further comprises a pair of fixed rollers and a pair of movable pulleys arranged symmetrically, wherein one fixed roller and one movable pulley Set on the same side, the fixed roller on the same side is tangent to the movable pulley, the fixed roller is fixedly installed in the housing through the shaft, the fixed roller shaft on the same side is connected to the movable pulley shaft through the connecting rod, and a symmetrically arranged pair of movable pulleys is formed. A through auxiliary rope hole is opposite to said rope hole up and down, and the pinion shaft on the same side is connected to the movable pulley shaft through a connecting rod. 3. The escape and rescue slow descending device according to claim 1 or 2, characterized in that, the escape and rescue slow descending device also includes an eccentric cam speed regulating device arranged below the rope hole, and the eccentric cam speed regulating device , including a fixed clamping block and a movable clamping block, the fixed clamping block is fixedly arranged on the shell, the movable clamping block is set on the shell through bolts, and one end of the movable clamping block is connected to the shell through a spring, The other end of the movable clamping block is arranged opposite to the fixed clamping block. 4. The escape and rescue descending device according to claim 3, characterized in that, an anti-off buckle is provided on the axis opposite to the rope hole in the housing. 5. The escape and rescue descending device according to claim 4, characterized in that, the upper end and the lower end of the casing are respectively provided with anti-off buckles. 6. The escape and rescue descending device according to claim 1, wherein a rescue rope sleeve is fixedly arranged on the surface of the housing.

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