WO2024149291A1 - Reciprocating disaster lifesaving device - Google Patents

Abstract

A reciprocating disaster lifesaving device, comprising a mounting hanging bracket (1) mounted at a high position and a steel rope winding/unwinding winch (2) below the mounting hanging bracket, wherein two escape hanging baskets used for being lifted and lowered for escape are connected below the steel rope winding/unwinding winch by means of a steel rope (3); a floor height positioning device (21) is provided on the steel rope winding/unwinding winch; a centrifugal friction deceleration device (23) is coaxially provided inside the steel rope winding/unwinding winch; each escape hanging basket is internally provided with a human body weight auto-braking system (41), and the steel rope in the escape hanging basket is arranged on the human body weight auto-braking system. According to the reciprocating disaster lifesaving device, the two escape hanging baskets alternately move up and down to achieve reciprocating self-rescue and mutual-rescue escape, the floor height positioning device is used for positioning the heights of different floors, the centrifugal friction deceleration device and a triple labor-saving mechanism in the human body weight auto-braking system are used for controlling deceleration, and the human body weight auto-braking system uses body weights of escape personnel for emergency braking to achieve self-locking, so that the life safety of the escape personnel is guaranteed while emergency escape is achieved.

Description

A reciprocating disaster rescue device Technical Field

The invention relates to the technical field of lifesaving equipment, and is applied to emergency self-rescue and mutual rescue escape of personnel in high-rise buildings such as office buildings and high-rise residential buildings or cliffs, and in particular to a reciprocating disaster lifesaving device.

Background technique

With the development of urban modernization, high-rise buildings have increased year by year, which has improved the utilization rate of land, but at the same time has also increased the difficulty of high-rise buildings in responding to disaster rescue and escape, such as fires and earthquakes. The problem of fire prevention and fire fighting in high-rise buildings has always been a major problem in fire safety. First, there are many vertical shafts such as stairwells, elevator shafts, pipe shafts, air ducts, and cable shafts in high-rise buildings. If the fire separation is not handled properly, when a fire occurs, it is like a towering chimney, which is easy to form a "chimney effect" and become a way for the fire to spread rapidly; second, there are many high floors and the vertical distance is long. It takes a long time to evacuate from the staircase to the ground or other safe places, which is not conducive to the evacuation of personnel; third, it is quite difficult to extinguish a fire from the outside when a high-rise building occurs, which is not conducive to rapid rescue. Generally, it is based on self-rescue, that is, it mainly relies on indoor fire-fighting facilities. Therefore, it is also necessary to install life-saving fire-fighting equipment in high-rise buildings to ensure the safety of the lives of people in high-rise buildings.

In the existing high-rise escape equipment, electric or mechanical rope descent escape methods are generally used. Fires in buildings are mostly caused by circuit short circuits or improper use of fire. Circuit short circuits or open flames burning the circuit will trigger the circuit switch to trip. The escape device that uses electric control to lift is easily affected by the circuit and cannot be used; the rechargeable electric lifting escape device needs to prepare sufficient power in advance, and disasters such as fires and earthquakes are sudden disasters. If there is no power supply, the escape device cannot be used. The rechargeable electric lifting escape device is not very practical, so the pure mechanical escape device is more suitable for escape and rescue in high-rise buildings.

Among the existing mechanical escape devices, the commonly used rope descent equipment is difficult to operate, and even requires the cooperation of multiple people to complete the rope descent escape, which is not conducive to the emergency evacuation and self-rescue of personnel in high-rise buildings. For example, the Chinese invention patent application number 201710732631.6 discloses that when the device is used, it is placed in a suitable The escape position is fixed to a safe position with a fixed buckle, the safety belt is put under the armpit and adjusted to the tightness, then the rope reel is thrown horizontally to the ground, the 8-ring descender is buckled on the required descending position of the wire rope and connected to the safety belt, then the 8-ring descender is controlled to slowly fall to the ground, and finally the safety belt is untied to leave the danger range. This invention patent also requires multiple people to cooperate in slowly lowering the steel rope on the ground, which is difficult to operate, and the deceleration effect of the 8-ring descender is mostly controlled manually. The rappelling personnel need to have certain rappelling operation knowledge to operate. If the personnel below do not cooperate well, the rappelling personnel may fall and get injured, or even pay the price of their lives.

When a fire occurs, trapped people are prone to experience fear, panic, tension and other psychological states during the process of descending to escape. In such a psychological state, it is difficult for escapees to concentrate on operating the complex escape device. If the escape device does not have the function of automatic deceleration or emergency brake self-locking, escapees can easily fall at high speed, causing serious physical injuries to the escapees or even losing their lives.

Therefore, it is necessary to design a high-rise escape device suitable for ordinary people who have no knowledge and practical ability of rope rappelling.

Summary of the invention

The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a reciprocating high-rise self-rescue and mutual rescue escape device which is easy to operate, highly safe, has a good deceleration effect, has an emergency self-locking function, and can rescue trapped persons an unlimited number of times.

The present invention is achieved through the following technical solutions:

A reciprocating disaster rescue device comprises a mounting hanger (1) mounted on a high-rise building, a steel rope retracting winch (2) being arranged below the mounting hanger (1), a first escape hanging basket (4) and a second escape hanging basket (5) being connected below the steel rope retracting winch (2) via a steel rope (3) for lifting up and down;

The steel rope retracting winch (2) is provided with a floor height positioning device (21) for adjusting the retracting and releasing length of the positioning steel rope (3);

A fixed installation jacket (22) is fixedly arranged below the installation hanger (1), and the steel rope retracting winch (2) is coaxially movably arranged on the fixed installation jacket (22). A centrifugal friction is arranged inside the fixed installation jacket (22). A friction deceleration device (23), wherein the centrifugal friction deceleration device (23) is driven to rotate by the steel rope (3) being retracted and released, and the centrifugal friction deceleration device (23) rubs against the inner wall of the fixed installation outer sleeve (22) through the centrifugal force generated by the rotation, so as to reduce the speed of retracting and releasing the steel rope (3);

The first escape basket (4) and the second escape basket (5) are provided with a human body self-weight automatic brake system (41), the steel ropes (3) in the first escape basket (4) and the second escape basket (5) are arranged on the human body self-weight automatic brake system (41), the human body self-weight automatic brake system (41) is connected to the mounting end of the handle (42), the gripping end of the handle (42) passes through the outside of the escape basket, the escapee is suspended on the human body self-weight automatic brake system (41) through a safety rope (61), and the escapee is used to automatically brake when the escapee rides on the escape basket to escape, and the handle (42) is used to control the descending speed of the first escape basket (4) and the second escape basket (5) on the steel rope (3); when the handle (42) is not pulled down, the basket (4) is locked by the human body self-weight and will not slide down;

The first escape hanging basket (4) and the second escape hanging basket (5) are respectively suspended by folding the steel rope (3) in half to form a double steel rope (3) load-bearing system, and the first escape hanging basket (4) and the second escape hanging basket (5) are alternately moved up and down for escape.

Furthermore, the first end of the steel rope (3) is fixedly arranged on the mounting bracket (1), and the second end of the steel rope (3) passes through the second escape basket (5) from above, passes through the human body weight automatic brake system (41) in the second escape basket (5), and then passes out from above the second escape basket (5); a steel rope turning disc (24) is arranged in the steel rope retracting winch (2), and the steel rope (3) passing through the second escape basket (5) passes through the first escape basket (4) from above after changing direction by the steel rope turning disc (24), passes through the human body weight automatic brake system (41) in the first escape basket (4), and then passes out from above the first escape basket (4), and the steel rope (3) after passing through is wound in the winch of the steel rope retracting winch (2).

Furthermore, the floor height positioning device (21) comprises:

A positioning hole (211) is circumferentially arranged on the steel rope retracting winch (2);

The positioning pin (212) is installed on the mounting plate below the mounting hanger (1), and the position of the positioning pin (212) matches the position of the positioning hole (211).

Furthermore, a gap of 1 to 1.5 meters is provided between the length of the steel rope (3) positioned by the floor height positioning device (21) and the ground of the lowest floor.

Furthermore, the centrifugal friction reduction device (23) comprises:

A centrifugal chute (231) is radially arranged inside the fixed mounting sleeve (22);

Braking blocks (232), two braking blocks (232) are slidably disposed in the centrifugal chute (231), and when the centrifugal chute (231) rotates, the braking blocks (232) are thrown outward by centrifugal force and rub against the inner wall of the fixedly mounted outer sleeve (22);

The planetary gear mechanism (233) is arranged behind the centrifugal chute (231). The centrifugal chute (231) is installed on the central gear of the planetary gear mechanism (233). The steel rope retracting winch (2) is coaxially arranged on the gear ring of the planetary gear mechanism (233). The planetary gear mechanism (233) is used to accelerate the rotation speed of the centrifugal friction reduction device (23).

Furthermore, the human body weight automatic braking system (41) comprises:

A fixed rope-pressing block (411) is arranged at a lower position inside the first escape hanging basket (4) and the second escape hanging basket (5), and a rotating cylindrical pressing block is arranged at the upper end of the fixed rope-pressing block (411);

A movable rope pressing block (412) is movably arranged above the fixed rope pressing block (411), a rotating cylindrical pressing block is arranged at the lower end of the movable rope pressing block (412), the cylindrical pressing block on the fixed rope pressing block (411) and the cylindrical pressing block on the movable rope pressing block correspond to each other in an alternating manner, and are used to tighten or loosen the steel rope (3);

A rocker arm pressing block (413) is hingedly arranged above the movable rope pressing block (412), and the movable rope pressing block (412) is hingedly connected to the middle of the rocker arm pressing block (413) and is used to press down the movable rope pressing block (412);

The shift fork gear (414) is arranged beside the rocker arm pressing block (413), and the upper part of the rocker arm pressing block (413) is clamped in the shift fork of the shift fork gear (414) for shifting the rocker arm pressing block (413) up and down;

The handle root gear (415) meshes with the teeth of the shift fork gear (414), the handle root gear (415) is connected to one end of the handle (42) through its axis, and the other two ends of the handle (42) extend out of the first escape hanging basket (4) and the second escape hanging basket (5);

The rope-pressing block reset spring (416) has a first end fixedly disposed on the escape basket housing above the rocker arm pressure block (413), and a second end connected to the rocker arm pressure block (413) for pulling the rocker arm pressure block (413) to reset.

Furthermore, the upper end of the rocker arm pressing block (413) is connected to a safety rope ring (6), the safety rope ring (6) passes through the lower ends of the first escape hanging basket (4) and the second escape hanging basket (5), and the safety rope ring (6) is used to connect a safety rope (61);

During the descent of the first escape hanging basket (4) or the second escape hanging basket (5), the escapee's own weight pulls the rocker arm pressing block (413) downwards through the safety rope hanging ring (6) to form a self-locking state.

Furthermore, the transmission ratio between the handle root gear (415) and the shift fork gear (414) is less than 1.

Furthermore, two fixed pulleys (43) are provided on each side of the human body weight automatic brake system (41), and the fixed pulleys (43) are used to change the direction of the steel rope (3); the steel rope (3) on the fixed pulleys (43) on the left and right sides of the human body weight automatic brake system (41) moves in opposite directions, which is used to offset the torque generated when the steel rope (3) is running.

Furthermore, the mounting bracket (1) is provided with a steel rope tightening device (11) for tightening the steel rope (3) wound on the steel rope retracting winch (2). The steel rope tightening device (11) comprises a tightening positioning block (111), a tightening telescopic rod (112), a tightening block (113) and a reset spring (114). The tightening positioning block (111) is arranged on the mounting bracket (1), the tightening telescopic rod (112) is movably arranged on the tightening positioning block (111), the tightening block (113) is arranged at the lower end of the tightening telescopic rod (112), the lower end of the tightening block (113) is in contact with the steel rope (3) on the steel rope retracting winch (2), and the reset spring (114) is coaxially arranged on the tightening telescopic rod (112).

Furthermore, the steel rope steering disc (24) is coaxially arranged on the central gear shaft of the planetary gear mechanism (233), and a steel rope tightening roller (241) is arranged below the steel rope steering disc (24).

Furthermore, a handle (7) is provided on the outer shell of each of the first escape hanging basket (4) and the second escape hanging basket (5), and the two handles (7) are respectively provided in the middle of the first escape hanging basket (4) and the second escape hanging basket (5).

Furthermore, the contact surface between the fixed installation sleeve (22) and the brake block (232) is a rough surface, and cylindrical external teeth or straight knurling or mesh knurling are provided on the inner wall of the fixed installation sleeve (22) and the arc surface of the brake block (232) contacting the fixed installation sleeve (22);

The contact surface between the fixed installation sleeve (22) and the gear ring of the planetary gear mechanism (233) is provided with cylindrical internal teeth, and the outer side of the gear ring of the planetary gear mechanism (233) is provided with cylindrical external teeth meshing with the cylindrical teeth of the fixed installation sleeve (22);

The tooth height of the cylindrical external teeth or straight knurling on the arc surface of the inner wall of the fixed installation sleeve (22) and the brake block (232) contacting the fixed installation sleeve (22) does not exceed 0.5 mm.

Working principle of the present invention:

The first escape basket (4) and the second escape basket (5) of the present invention are folded and pulled against each other by a steel rope (3). When the first trapped person descends to escape, a section of the steel rope (3) wound on the steel rope retracting winch (2) is used as a release rope, and a section of the steel rope (3) connected to the steel rope retracting winch (2) is used as a fixing rope. After the first trapped person descends to escape, a section of the steel rope (3) connected to the steel rope retracting winch (2) and a section of the steel rope (3) connected to the fixing ring of the mounting hanger (1) are used as fixing ropes of the first escape basket (4) and the second escape basket (5), respectively. The steel rope retracting disk (24) pulls a section of the steel rope (3) of the first escape basket (4) and the second escape basket (5) as a retracting rope during lifting and lowering. The first escape basket (4) and the second escape basket (5) are lifted and lowered back and forth by alternately retracting and releasing the retracting rope, thereby realizing reciprocating self-rescue and mutual rescue escape.

The steel rope retracting winch (2) releases the steel rope by rotating. After the first trapped escapee descends to escape, the actual length of the steel rope (3) released can be obtained. The operator can insert the positioning pin (212) in the floor height positioning device (21) into the positioning hole (211) on the steel rope retracting winch (21), thereby limiting the length of the longest steel rope (3) that can be released by the rotation of the steel rope retracting winch (2), and preventing the actual length of the steel rope (3) released from being too long, causing the escape basket to fall to the ground and causing secondary damage. After the rescue operation is completed, the operator pulls out the positioning pin (212) to reset the device and prepare for the next use.

According to the above structure of the device, each time the first trapped person to escape must be able to obtain the steel rope (3) to release The actual length may be suitable for lifesaving at different floor heights.

The centrifugal friction deceleration device (23) utilizes the descending speed of the escape hanging basket (4, 5) to drive the steel rope turning disc (24) to rotate, and the rotation of the steel rope turning disc (24) drives the coaxially connected centrifugal chute (231) to rotate. The centrifugal force generated by the rotation of the centrifugal chute (231) throws the two brake blocks (232) outward, and the brake blocks (232) and the inner wall of the fixed installation jacket (22) rub to achieve braking deceleration. If the escape hanging basket (4, 5) descends faster, the centrifugal force of the two brake blocks (232) thrown outward is greater, and the friction between the brake blocks (232) and the inner wall of the fixed installation jacket (22) is greater, so that safe descent is achieved.

In the human body weight automatic brake system (41), the weight of the escapee is used to pull the rocker arm pressure block (413) downward, and the rocker arm pressure block (413) is pressed downward to drive the movable rope pressure block (412) to press the steel rope (3) between the movable rope pressure block (412) and the fixed rope pressure block (411) to achieve self-locking; the long handle (42) is used to rotate the handle root gear (415), the small gear of the handle root gear (415) drives the shift fork gear (414 ) and the shift fork on the shift fork gear (414) shift the rocker arm pressing block (413), and multiple labor saving is achieved through the lever principle and gear deceleration. The rocker arm pressing block (413) is shifted upward to lift its own weight, and the rocker arm pressing block (413) simultaneously pulls the movable rope pressing block (412) upward, thereby changing the force of the fixed rope pressing block (411) and the movable rope pressing block (412) squeezing the steel rope (3), so that the descending speed of the escape hanging basket can be manually and autonomously controlled by the escapee.

The beneficial effects of the present invention compared with the prior art are as follows:

The present invention controls the movable rope-pressing block (412) to automatically press the steel rope (3) to form a self-locking and emergency braking by the weight of the human body, thereby preventing the escapee from being unable to operate the handle due to panic, and the fixed rope-pressing block (411) and the movable rope-pressing block (412) that squeeze the steel rope (3) are loosened, resulting in deceleration failure, accelerating the descending speed of the escape hanging basket, and causing life safety damage to the escapee.

The present invention forms a triple force-saving force arm by using the rocker arm pressure block (413) lever and the small gear at the root of the handle to drive the large gear of the shift fork and the handle (42) lever, and utilizes the lever principle in combination with the gear reduction mechanism to obtain a greater braking force. The minimum pulling force of the escapee pulling the handle does not exceed 2% of the escapee's body weight, which greatly reduces the force of the escapee pulling the handle (42). The elderly and children can also easily pull the handle (42). It makes it easier for the escapee to control the descending speed of the escape basket, and increases the travel of the brake clamping mechanism, making the descending action more decisive;

The centrifugal friction deceleration device (23) of the present invention utilizes centrifugal force to swing the brake block (232) outwards to rub against the inner wall of the fixed mounting outer casing (22) to achieve automatic deceleration when the escape basket descends, and reduces the descending speed of the escape basket by increasing the friction force. The faster the speed of the escape basket, the greater the centrifugal force of the brake block (232) thrown outwards, and the better the braking effect, so that the escape basket automatically adapts to the descending speed of the escape basket and achieves friction deceleration.

The present invention uses a centrifugal friction deceleration device (23) to automatically control the deceleration and a handle (42) to manually control the descending speed. The automatic deceleration is coordinated with the manual control to achieve double deceleration when the escape hanging basket descends. The descending speed can be controlled within two meters per second. The descending speed meets international standards, and the impact force is too large when landing to prevent the escapee's legs from being damaged, thereby ensuring the life safety of the escapee.

The present invention locates the floor height through a floor height positioning device (21), so that the control accuracy of the retracted and released length of the steel rope (3) is improved. The floor height positioning device (21) can be used to set different pulled-out lengths of the steel rope (3), which is suitable for rescue at different floor heights. The floor height positioning device (21) locates the release length of the steel rope (3) when the escapee descends for the first time, so that a gap of 1 to 1.5 meters is maintained between the release length and the lowest floor, thereby preventing the escapee from directly touching the ground when the device is out of control, causing the escapee to be injured twice.

The present invention has a simple structure, a small volume, and is easy to store and carry. The reciprocating structure of the escape method can save the rising time (or half the time) of the escape device, and can rescue trapped persons several times from left to right, thereby achieving fast, efficient, safe and autonomous escape.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is a circuit layout diagram of the steel rope of the present invention;

FIG3 is a schematic diagram of the three-dimensional structure of the interior of the steel rope retracting winch of the present invention;

FIG4 is a schematic diagram of the three-dimensional structure of the steel rope tightening device of the present invention for compressing the steel rope;

FIG5 is a front view of the steel rope retracting winch of the present invention;

Fig. 6 is a schematic cross-sectional view of the A-A section in Fig. 5 of the present invention;

7 is a three-dimensional internal structure diagram of the first escape hanging basket and the second escape hanging basket of the present invention;

FIG8 is a partial enlarged view of point B in FIG2 of the present invention;

FIG9 is a three-dimensional schematic diagram of the labor-saving mechanism in the human body's own weight automatic braking system of the present invention;

FIG10 is a diagram showing the present invention in use during escape;

FIG11 is a partial enlarged view of point A in FIG9 of the present invention;

FIG12 is a front view of a second structure of a centrifugal friction reduction device according to the present invention;

FIG. 13 is a structural stereogram of the foldable mounting hanger of the present invention.

Numbers in the figure:
1-Install the hanger;
11-steel rope tightening device, 111-tightening positioning block, 112-tightening telescopic rod, 113-tightening block, 114-
Return spring; 12-Steel rope retracting pulley;
2-wire retracting winch; 21-floor height positioning device, 211-positioning hole, 212-positioning pin; 22-
Fixed installation jacket; 23-centrifugal friction reduction device, 231-centrifugal slide, 232-brake block, 233-planetary gear mechanism; 24-steel rope turning disc, 241-steel rope tightening roller;
3- Steel rope;
4-First escape basket;
41-human body weight automatic brake system, 411-fixed rope pressing block, 412-movable rope pressing block, 413-rocker arm pressing block, 414-shift fork gear, 415-handle root gear, 416-rope pressing block reset spring; 42-handle; 43-fixed pulley, 44-windproof whip;
5- Second escape basket;
6-safety rope ring, 61-safety rope;
7- Grip.

Detailed ways

In order to enable those skilled in the art to better understand the technical solution of the present invention, its specific implementation method is described in detail below with reference to the accompanying drawings.

Embodiment 1: As shown in Figure 1-11, a reciprocating disaster rescue device includes an installation hanger 1 installed on a high-rise building, a steel rope retracting winch 2 is arranged below the installation hanger 1, and a first escape basket 4 and a second escape basket 5 for up and down escape are connected to the steel rope retracting winch 2 through a steel rope 3; a floor height positioning device 21 is arranged on the steel rope retracting winch 2, and the steel rope retracting winch 2 is coaxially movably arranged on a fixed installation jacket 22, and a centrifugal friction deceleration device 23 is arranged inside the fixed installation jacket 22, and a human body self-weight automatic braking system 41 is arranged in the first escape basket 4 and the second escape basket 5, and the steel rope 3 in the first escape basket 4 and the second escape basket 5 is arranged on the human body self-weight automatic braking system 41, and the human body self-weight automatic braking system 41 is connected to the installation end of the handle 42, and the holding end of the handle 42 passes through the outside of the first escape basket 4 and the second escape basket 5, and when the steel rope retracting winch 2 rotates, the first escape basket 4 and the second escape basket 5 move up and down alternately.

In the embodiment, as shown in Figures 3, 4 and 6, the floor height positioning device 21 includes a positioning hole 211 and a positioning pin 212, a plurality of positioning holes 211 are circumferentially arranged on the steel rope retracting winch 2, the positioning pin 212 is installed on the mounting plate below the mounting hanger 1, and the position of the positioning pin 212 matches the position of the positioning hole 211; after the first trapped person escapes using the first escape basket 4, the steel rope 3 is pulled to a length suitable for the escape floor height, and other trapped persons on the high-rise building can position the length of the steel rope 3 pulled out from the steel rope retracting winch 2 according to the height to which the first trapped person descends; the steel rope retracting winch 2 is positioned by the floor height positioning device 21 to set different steel rope 3 pull-out lengths, thereby being suitable for lifesaving at different floor heights.

In the embodiment, a gap of 1 to 1.5 meters is set between the length of the steel rope 3 positioned by the floor height positioning device 21 and the lowest floor, so as to avoid the danger of the human body directly touching the bottom when the mechanism of the present invention is out of control, and ensure the life safety of the trapped persons when escaping.

In the embodiment, as shown in FIG. 3 and FIG. 6 , the centrifugal friction reduction device 23 is used to reduce the speed of the steel rope 3. The speed of release includes a centrifugal chute 231 radially arranged inside the steel rope retracting and releasing winch 2, two brake blocks 232 are slidably arranged in the centrifugal chute 231, a planetary gear mechanism 233 is arranged behind the centrifugal chute 231, the centrifugal chute 231 is coaxially fixed on the central gear of the planetary gear mechanism 233, and the ring gear of the planetary gear mechanism 233 is coaxially fixed on the inner wall of the fixed mounting sleeve 22.

In the embodiment, as shown in Figure 6, a steel rope steering disc 24 is provided at the end of the central gear shaft of the planetary gear mechanism 233, and the steel rope 3 between the first escape basket 4 and the second escape basket 5 is arranged in the groove of the steel rope steering disc 24. When one of the escape baskets moves downward, the steel rope 3 drives the steel rope steering disc 24 to rotate, thereby driving the coaxially fixed central gear of the planetary gear mechanism 233 to rotate. When the central gear of the planetary gear mechanism 233 rotates, the two brake blocks 232 in the centrifugal chute 231 are thrown outward by centrifugal force and rub against the inner wall of the fixed installation sleeve 22, thereby reducing the rotation rate of the central gear of the planetary gear mechanism 233 and the steel rope steering disc 24 by increasing the friction force, thereby reducing the moving rate of the steel rope 3, and driving the reduction of the descending rate of the first escape basket 4 and the second escape basket 5, thereby realizing automatic deceleration when the escape basket descends.

In the embodiment, the greater the descending rate of the first escape basket 4 or the second escape basket 5, the greater the rotation rate of the steel rope 3 driving the steel rope steering disc 24 and the centrifugal chute 231, and the greater the centrifugal force thrown outward by the brake block 232, thereby increasing the friction between the brake block 232 and the inner wall of the fixed installation sleeve 22, and the friction force generated by the friction braking the rotation of the central gear shaft of the planetary gear mechanism 233 is better; therefore, the descending rate of the first escape basket 4 and the second escape basket 5 is proportional to the friction force of the brake block 232, and the centrifugal friction reduction device 23 can automatically adapt to the descending rate of the first escape basket 4 or the second escape basket 5 and frictionally reduce speed.

In an embodiment, as shown in FIG. 3 , the ring gear in the planetary gear mechanism 233 is fixed and does not rotate, the central gear shaft is positioned and rotates, and a plurality of planetary gears rotate around the central gear; the planetary gear mechanism 233 is used to position the central gear axis while accelerating the rotation speed of the centrifugal friction reduction device 23 to enhance the braking effect.

In the embodiment, as shown in FIG. 2 and FIG. 6, a steel rope tightening roller 241 is provided below the steel rope turning disc 24, and the steel rope tightening roller 241 is used to increase the friction between the steel rope 3 and the steel rope turning disc 24 to prevent the steel rope 3 from Slipping on the steel rope deflector 24 causes the central gear of the planetary gear mechanism 233 and the centrifugal chute 231 to rotate slowly or not rotate, resulting in poor deceleration effect of the centrifugal friction reduction device 23 on the retraction and release speed of the steel rope 3, affecting the life safety of the escapees.

In the embodiment, as shown in Figures 1 and 2, the first end of the steel rope 3 is bolted and fixed to the fixing ring on the left side of the mounting hanger 1, and the second end of the steel rope 3 penetrates from above the second escape basket 5, passes through the human body weight automatic brake system 41 in the second escape basket 5, and then passes out from above the second escape basket 5; the steel rope 3 passing through the second escape basket 5 is changed direction by the steel rope turning disc 24 and then penetrates from above the first escape basket 4, passes through the human body weight automatic brake system 41 in the first escape basket 4, and then passes out from above the first escape basket 4. The steel rope 3 after passing through is wound and arranged in the winch of the steel rope retracting winch 2.

In the embodiment, as shown in Figures 1, 2 and 10, the first escape basket 4 and the second escape basket 5 are respectively suspended by folding the steel rope 3 to form a double steel rope 3 for load-bearing, which is fire-resistant and has strong load-bearing capacity, and solves the problem of loosening of the single steel rope 3 due to failure of pre-tightening of the steel rope 3 due to torsional force during operation.

In the embodiment, as shown in Figures 1, 2 and 10, the first escape hanging basket 4 and the second escape hanging basket 5 are in the same position when not in use, and the first escape hanging basket 4 and the second escape hanging basket 5 can be alternately moved up and down when in use; when the first trapped person uses the first escape hanging basket 4 to escape, the second escape hanging basket 5 remains motionless, and when the first trapped person reaches the ground, the first escape hanging basket 4 is located at the bottom floor, and the second escape hanging basket 5 is located at the initial position on the high-rise building, and when the second trapped person uses the second escape hanging basket 5 located on the high-rise building to descend and escape, the first escape hanging basket 4 is pulled up by the descending second escape hanging basket 5; when the second trapped person reaches the ground, the ascending first escape hanging basket 4 reaches the window of the escape floor on the high-rise building, and the third trapped person can use the first escape hanging basket 4 to descend and escape; in this way, the first escape hanging basket 4 and the second escape hanging basket 5 are alternately lifted and lowered, and the trapped persons can be rescued unlimited times, the rising time of the escape device is saved, and high-speed, efficient, safe and autonomous escape is achieved.

In the embodiment, as shown in FIG. 7 and FIG. 9, the human body weight automatic brake system 41 includes a fixed rope pressure block 411 disposed at the lower position of the first escape hanging basket 4 and the second escape hanging basket 5. The fixed rope pressure block 411 A movable rope-pressing block 412 is movably arranged at the top, a rocker arm pressure block 413 is hingedly arranged on the escape basket shell above the movable rope-pressing block 412, and the movable rope-pressing block 412 is hingedly arranged at the middle part of the rocker arm pressure block 413; a fork gear 414 is arranged next to the rocker arm pressure block 413, and the upper part of the rocker arm pressure block 413 is clamped in the fork of the fork gear 414, and the fork gear 414 is meshed with a handle root gear 415, one end of the handle 42 is coaxially connected to the shaft of the handle root gear 415, and the other end of the handle 42 extends out of the first escape basket 4 and the second escape basket 5.

In the embodiment, as shown in Figures 7 and 8, a fixed columnar pressure block is provided at the upper end of the fixed rope pressure block 411, and a movable columnar pressure block is provided at the lower end of the movable rope pressure block 412. The fixed columnar pressure blocks on the fixed rope pressure block 411 correspond to the movable columnar pressure blocks on the movable rope pressure block 412 in an alternating manner. The columnar pressure blocks are used to tighten or loosen the steel rope 3 during the descent of the first escape basket 4 and the second escape basket 5, thereby reducing the descent rate of the first escape basket 4 and the second escape basket 5.

In the embodiment, as shown in Figures 7 and 8, the fixed cylindrical pressing block and the movable cylindrical pressing block are cylinders with arc surfaces. When the steel rope 3 is squeezed by the fixed cylindrical pressing block and the movable cylindrical pressing block, there is an arc surface for transition to prevent friction damage to the steel rope 3 caused by edges and corners. The steel rope 3 may also break if it runs on the edges and corners for a long time, affecting the life safety of the escaped personnel.

In the embodiment, as shown in Figure 7, a rope pressing block reset spring 416 is arranged above the fixed rope pressing block 411, and the rope pressing block reset spring 416 is used to pull the fixed rope pressing block 411 to reset upward, and drive the handle 42 to reset downward through the rocker arm pressure block 413, the fork gear 414 and the handle root gear 415, so as to prevent the movable rope pressing block 412 from pressing the steel rope 3 during the ascent of the first escape basket 4 or the second escape basket 5, so that the steel rope 3 cannot be retracted or released.

In the embodiment, as shown in Figures 7 and 9, the upper end of the rocker arm pressing block 413 is connected to a safety rope ring 6, and the safety rope ring 6 passes through the lower ends of the first escape hanging basket 4 and the second escape hanging basket 5. The safety rope ring 6 is used to connect the safety rope 61, and the safety rope 61 is used to fix the body of the escapee; during the descent of the escape hanging basket 4, the escapee's own weight pulls the rocker arm pressing block 413 downward through the safety rope ring 6, and the rocker arm pressing block 413 drives the movable rope pressing block 412 to press down and press the steel rope 3 between the fixed rope pressing block 411 and the movable rope pressing block 412 to form a self-locking, so as to prevent the escapee from being unable to control the handle 42 to descend due to panic, resulting in the fixed rope pressing block 411 The squeezing deceleration of the movable rope pressing block 412 fails, and the escape hanging basket 4 descends too fast, causing life safety damage to the escapees.

In the embodiment, during the descent of the first escape basket 4 or the second escape basket 5, the escapee controls the descent rate by pulling down the handle 42; when the handle 42 is pulled down, the gear 415 at the root of the handle rotates counterclockwise and drives the fork gear 414 to rotate clockwise; the fork on the fork gear 414 shifts the rocker arm pressure block 413 upward, drives the movable rope pressure block 412 to move upward to release the steel rope 3, so that the escape basket 4 can slide down on the steel rope 3, and by controlling the pull-down angle of the handle 42, the friction between the fixed rope pressure block 411, the movable rope pressure block 412 and the steel rope 3 can be controlled, thereby controlling the descent rate of the escape basket on the steel rope 3.

In an embodiment, the transmission ratio between the handle root gear 415 and the fork gear 414 is less than 1, and the small gear of the handle root gear 415 drives the large gear of the fork gear 414 to form a labor-saving mechanism, thereby reducing the force of the escapee pulling down the handle 42 and reducing the difficulty of the escapee pulling the handle 42.

In the embodiment, as shown in Figure 9, the human body's own weight automatic braking system 41 is provided with a triple effort-saving lever, the lever formed by the length of the handle 42 is the first effort-saving lever; the small gear of the handle root gear 415 drives the large gear of the fork gear 414 as the second effort-saving lever; the distance from the installation hinge shaft of the rocker arm pressure block 413 to the fork of the fork gear 414 forms the third effort-saving lever; the triple effort-saving lever greatly reduces the force of the escapee to pull down the handle 42, so that the escapee can easily pull his own weight, thereby better controlling the descending rate of the escape basket 4.

In the embodiment, the triple force-saving lever arm of the human body weight automatic brake system 41 is as follows, taking an escapee weighing 100 kg as an example, without considering the transmission loss:

The resistance arm L1 of the third effort-saving arm is the distance from the connection point between the safety rope ring 6 and the rocker arm pressure block 413 to the hinge axis between the rocker arm pressure block 413 and the movable rope pressure block 412. The design size of the resistance arm L1 is about 35mm. The power arm L2 is the distance from the contact point between the fork gear 414 and the rocker arm pressure block 413 to the hinge axis of the rocker arm pressure block 413. The design size of the power arm L2 is about 46mm. The resistance F1 is the weight of the escapee 1000N. According to the arm calculation formula:

Resistance × resistance arm = power × power arm;

That is: L1×F1＝L2×F2;

0.035m×1000N＝0.046m×F2;

F2≈760.87N;

The second force-saving lever arm is gear transmission, and the torque ratio is 1/transmission ratio. The pitch circle diameter of the fork gear 414 is 34 mm, and the pitch circle diameter of the handle root gear 415 is designed to be 16 mm. Therefore, the torque ratio is 16/34, and the resistance F3 = F2. According to the lever arm calculation formula: Torque = circumferential force × lever arm, because the torque is equal when the gears are meshing and rotating, the circumferential force is also equal, so the torque ratio is the lever arm ratio:

Resistance × resistance arm = power × power arm;

That is: L3×F3＝L4×F4;

16×760.87N=34×F4;

F4≈358N;

The resistance arm L5 of the first force-saving arm is the pitch circle radius of the gear 415 at the root of the handle. The design size of the pitch circle radius of the gear 415 at the root of the handle is about 8 mm. The power arm L6 is the length of the handle 42. The design size of the power arm L6 is about 160 mm. The resistance F5 = F4. The power F6 is the pulling force of the escapee on the handle 42. According to the arm calculation formula:

Resistance × resistance arm = power × power arm;

That is: L5×F5＝L6×F6;

8×358N=160×F6;

F6＝17.9N;

Therefore, without considering the transmission loss, the minimum pulling force that a 100 kg escapee needs to apply to the handle 42 is 17.9 N, that is, 1.79 kg, which is only 1.79% of the escapee's weight. Through the transmission of the triple force-saving lever arm mechanism, not only adults can save effort when pulling the handle 42, but also the elderly and children can save effort. Children can also easily pull the handle 42, which is suitable for people of different weights and physical fitness and has a wide range of applicability.

In the embodiment, as shown in Figures 2 and 8, two fixed pulleys 43 are respectively arranged on both sides of the human body weight automatic brake system 41 in the first escape basket 4 or the second escape basket 5, and the fixed pulleys 43 are used to change the direction of the steel rope 3; when the steel rope 3 moves on the fixed pulleys 43, a circumferential torque will be generated. The movement directions of the steel rope 3 on the fixed pulleys 43 on the left and right sides of the human body weight automatic brake system 41 are opposite, and the circumferential torques generated by the steel rope 3 on the fixed pulleys 43 on both sides are also opposite. The two cancel each other out, avoiding the steel rope 3 from being broken due to uneven force on the steel wire of the steel rope 3 due to looseness, thereby affecting the life safety of the escapee.

In the embodiment, as shown in Figures 2 and 7, a wind whip 44 is provided at the bottom of the first escape basket 4 or the second escape basket 5, and a pulley is provided on the wind whip 44. The pulley is used to support the safety rope ring 6 to prevent the safety rope ring 6 from being damaged or even broken by friction with the outlet at the lower end of the first escape basket 4 or the second escape basket 5.

In the embodiment, as shown in Figures 4 and 6, the steel rope tightening device 11 includes a tightening positioning block 111 arranged on the mounting hanger 1, and a tightening telescopic rod 112 is movably arranged on the tightening positioning block 111, and a tightening block 113 is arranged at the lower end of the tightening telescopic rod 112, and the lower end of the tightening block 113 contacts the steel rope 3 on the steel rope taking-up winch 2, and a return spring 114 is coaxially arranged on the tightening telescopic rod 112. The steel rope tightening device 11 is used to tighten the steel rope 3 wound on the steel rope taking-up winch 2, and the return spring 114 is used to automatically control the tightening block 113 to contact the steel rope 3, so as to prevent the steel rope 3 wound on the steel rope taking-up winch 2 from loosening and causing cross winding, which causes the steel rope 3 to be stuck or difficult to retract.

In the embodiment, as shown in Figures 1, 2 and 3, a steel rope retracting pulley 12 is provided on the right side of the mounting bracket 1, and the steel rope retracting pulley 12 is used to increase the distance between the two sections of steel rope 3 for hanging the first escape basket 4, so as to prevent the steel rope 3 in the steel rope retracting winch 2 from being entangled with another section of steel rope 3 for hanging the first escape basket 4 during retraction, resulting in the steel rope 3 in the steel rope retracting winch 2 being unable to be retracted or released.

In the embodiment, the mounting bracket 1 can be fixed by the existing wall clamping or bolt installation method. It can be freely clamped and installed on the wall of the window or on the anti-theft window with higher structural strength. It takes a short time to install and does not need to be installed in advance. It is easy to install and use.

In the embodiment, as shown in Figures 1 and 11, a handle 7 is provided on the outer shell of the first escape basket 4 and the second escape basket 5, respectively, for facilitating the escapee to grasp, and the two handles 7 are respectively provided in the middle of the first escape basket 4 and the second escape basket 5 to maintain the symmetrical balance of the escape basket.

In the embodiment, the handle 7 can be used as a protection device for the escapee. The escapee should hold the handle 7 tightly during the descent. If one of the safety rope eye 6 and the safety rope 61 breaks during the descent, the escapee can hold the handle 7 tightly to prevent falling and wait for rescue.

Embodiment 2: When firefighters use firefighting equipment to spray water to extinguish fire, water may enter the fixed installation jacket 22, or when grease or oil liquid accidentally enters the fixed installation jacket 22 during daily maintenance, the friction force between the brake block 232 and the fixed installation jacket 22 will be reduced, causing the braking effect to be greatly reduced.

In this embodiment, the friction force when the brake block 232 rubs against the fixed installation jacket 22 is increased by increasing the roughness of the contact surface between the brake block 232 and the inner wall of the fixed installation jacket 22, thereby preventing the brake block 232 from slipping when rubbing against the fixed installation jacket 22. If the descent speed of the escape hanging basket 4, 5 is too fast, the impact force generated when the escape hanging basket 4, 5 lands is too large, which will cause double damage to the life safety of the escapee.

This embodiment adopts the structure shown in Figure 12, and the part on the inner side of the fixed mounting sleeve 22 that contacts the planetary gear mechanism 233 can be provided with cylindrical internal teeth. The inner side of the gear ring in the planetary gear mechanism 233 is involute internal teeth, and the outer side of the gear ring is cylindrical external teeth/net knurling. The cylindrical external teeth on the outer side of the gear ring of the planetary gear mechanism 233 rub or mesh with the cylindrical internal teeth on the inner side of the fixed mounting sleeve 22. Through the sliding cooperation between the cylindrical external teeth or the net knurling and the cylindrical internal teeth, the gear ring of the planetary gear mechanism 233 is detachably connected to the fixed mounting sleeve 22, which is convenient for disassembly during maintenance.

In the embodiment, the arc surface of the brake block 232 in contact with the fixed installation sleeve 22 can be provided with cylindrical external teeth or straight knurling or mesh knurling. When the centrifugal friction reduction device 23 rotates, the brake block 232 on the centrifugal friction reduction device 23 is thrown outward, and friction braking and deceleration are generated with the inner wall of the fixed installation sleeve 22. The cylindrical outer teeth on the block 232 rub against the cylindrical inner teeth on the inner side of the fixed mounting sleeve 22 .

In this embodiment, the tooth height of the cylindrical external teeth or straight knurling on the arc surface where the brake block 232 contacts the fixed mounting sleeve 22 does not exceed 0.5 mm. This can prevent the brake block 232 from being thrown outward and rubbing against the inner wall of the fixed mounting sleeve 22. The two will not be directly stuck due to engagement, causing the centrifugal friction reduction device 23 to be locked and unable to rotate. The steel rope steering disc 24 and the steel rope tightening roller 241 at the tail of the centrifugal friction reduction device 23 that cannot rotate clamp the steel rope 3, causing the steel rope 3 to be unable to be alternately retracted and released, and the phenomenon of obstruction of the descent of the escape basket occurs.

In this embodiment, the mounting hanger 1 can also be set as a folding structure or a telescopic structure, as shown in Figure 13, the folding structure of the mounting hanger 1 is formed by hingedly connecting two sections of the hanger, and is fixed and locked by bolts after unfolding. Under the premise of ensuring the structural strength of the mounting hanger 1, the overall length of the mounting hanger 1 is halved by folding or telescoping, thereby reducing the overall packaging length of the device of the present invention, making it convenient to store in a box and carry it, and the design weight of the device of the present invention is about 9KG, which is convenient for installation and transportation, and reduces the labor intensity of installation and transportation of the device.

The working mode of the present invention is:

When the first escape hanging basket 4 and the second escape hanging basket 5 are not in use, as shown in FIG. 2 , the steel rope 3 is wound and stored in the steel rope retracting winch 2 , and the first escape hanging basket 4 and the second escape hanging basket 5 are located at the same height;

When a fire or other emergency occurs in a high-rise building, making the stairs, elevators and other passages in the high-rise building unusable, take out the device of the present invention, install the mounting bracket 1 of the device on the wall of the window or on the anti-theft window with high structural strength, check whether the device is installed securely and safely, and ensure that there is no danger or obstruction under the window where the device is installed;

When the trapped person uses the device to escape, as shown in Figures 10 and 11, one end of the safety rope 61 is put forward from the back to the armpits on both sides of the human body, and the other end of the safety rope 61 is put on one of the legs, and then the middle part of the safety rope 61 is hung on the safety rope ring 6. The first hand grasps the grip 7 on the escape basket and climbs out of the window safely. The second hand grasps the handle 42, and the leg that is not connected with the safety rope is stepped on the outer wall of the high-rise building to control the direction of the body; then the handle 42 is slowly pulled downward, and the escape basket moves downward immediately, and The pulling amplitude of the handle 42 is adjusted according to the descending speed of the escape basket. If the descending speed of the escape basket is fast, the pulling force of the handle 42 is reduced. If the descending speed of the escape basket is slow, the pulling force of the handle 42 is increased. If the descending speed is too fast, release the handle 42, adjust your mentality and then slowly pull the handle 42 until the person lands safely, and then untie the safety rope 61.

When the first trapped person escapes, the positioning pin 212 is opened, and the trapped person uses the first escape basket 4 to escape. At this time, a section of steel rope 3 wound on the steel rope retracting winch 2 is used as a release rope, and a section of steel rope 3 connected to the steel rope reversing disc 24 is used as a fixed rope. When the first trapped person is about to descend to the ground, he can use an intermittent pulling handle 42 to descend to prevent the human body from directly hitting the bottom due to the rapid descent rate. After the first trapped person lands safely, the remaining trapped people on the high-rise building insert the positioning pin 212 into the positioning hole 211 according to the descending height of the first trapped person, locate the required length of the steel rope 3, prevent the steel rope retracting winch 2 from rotating to change the length of the steel rope 3, and ensure When the escape basket 4 falls to the lowest point, it maintains a clearance height of 1-1.5 meters with the ground. After positioning is completed, the second trapped person uses the second escape basket 5 to escape. At this time, a section of steel rope 3 fixed on the fixed ring on the left side of the installation hanger 1 is used as a fixed rope, and the steel rope 3 that pulls the first escape basket 4 is used as a release rope for the second escape basket 5. When the second escape basket 5 descends, the first escape basket 4 moves upward; after the first escape basket 4 rises to the escape window and the second trapped person escapes, the third trapped person uses the first escape basket 4 to descend and escape, and the second escape basket 5 is lifted and lifted by the first escape basket 4, and the lifting and lowering are cyclically alternated in sequence to achieve reciprocating escape.

It should be noted that the technical solution of the present invention is introduced in detail above, and the principle of the present invention is described. The above description of the working principle is only used to help understand the core idea of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Those skilled in the art may modify or supplement the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope of the present invention. The scope of protection of the present invention belongs to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims (10)

1. A reciprocating disaster rescue device comprises a mounting hanger (1) mounted on a high-rise building, a steel rope retracting winch (2) is arranged below the mounting hanger (1), and the device is characterized in that a first escape basket (4) and a second escape basket (5) for lifting up and down are connected below the steel rope retracting winch (2) through a steel rope (3).

   The steel rope retracting winch (2) is provided with a floor height positioning device (21) for adjusting the retracting length of the positioning steel rope (3);

   A fixed installation jacket (22) is fixedly arranged below the installation hanger (1), a steel rope retracting winch (2) is coaxially movably arranged on the fixed installation jacket (22), a centrifugal friction deceleration device (23) is arranged inside the fixed installation jacket (22), the centrifugal friction deceleration device (23) is driven to rotate by the retracting of the steel rope (3), and the centrifugal friction deceleration device (23) generates centrifugal force through rotation and rubs against the inner wall of the fixed installation jacket (22), so as to reduce the speed of retracting the steel rope (3);

   The first escape basket (4) and the second escape basket (5) are provided with a human body self-weight automatic brake system (41); the steel ropes (3) in the first escape basket (4) and the second escape basket (5) are arranged on the human body self-weight automatic brake system (41); the human body self-weight automatic brake system (41) is connected to the mounting end of the handle (42); the gripping end of the handle (42) passes through the outside of the escape basket; the escapee is suspended on the human body self-weight automatic brake system (41) through a safety rope (61), and is used for automatic braking when the escapee rides on the escape basket (4, 5) to escape; the handle (42) is used to control the descending speed of the first escape basket (4) and the second escape basket (5) on the steel rope (3); when the handle (42) is not pulled down, the basket (4) is locked by the human body self-weight and will not slide down;

   The first escape hanging basket (4) and the second escape hanging basket (5) are respectively suspended by folding the steel rope (3) in half to form a double steel rope (3) load-bearing system, and the first escape hanging basket (4) and the second escape hanging basket (5) are alternately moved up and down for escape.
2. A reciprocating disaster rescue device according to claim 1, characterized in that: one end of the steel rope (3) is fixedly arranged on the mounting bracket (1), and the other end of the steel rope (3) penetrates from above the second escape basket (5), passes through the human body weight automatic brake system (41) in the second escape basket (5), and then passes out from above the second escape basket (5); a steel rope turning disc (24) is arranged in the steel rope retracting winch (2), and the steel rope (3) passing from above the second escape basket (5) passes through the steel rope turning disc (24) after changing direction, and then penetrates from above the first escape basket (4), passes through the human body weight automatic brake system (41) in the first escape basket (4), and then passes out from above the first escape basket (4), and the steel rope (3) after passing out is wound in the winch of the steel rope retracting winch (2).
3. The reciprocating disaster rescue device according to claim 1 is characterized in that: the floor height positioning device (21) comprises:

   A positioning hole (211) is circumferentially arranged on the steel rope retracting winch (2);

   A positioning pin (212) is mounted on the mounting plate below the mounting hanger (1), and the position of the positioning pin (212) matches the position of the positioning hole (211);

   A gap length of 1 to 1.5 meters is provided between the length of the steel rope (3) positioned by the floor height positioning device (21) and the ground of the lowest floor.
4. The reciprocating disaster rescue device according to claim 1 is characterized in that: the centrifugal friction deceleration device (23) comprises:

   A centrifugal chute (231) is radially arranged inside the fixed mounting sleeve (22);

   Braking blocks (232), two braking blocks (232) are slidably disposed in the centrifugal chute (231), and when the centrifugal chute (231) rotates, the braking blocks (232) are thrown outward by centrifugal force and rub against the inner wall of the fixedly mounted outer sleeve (22);

   The planetary gear mechanism (233) is arranged behind the centrifugal chute (231), and the centrifugal chute (231) is installed on the central gear of the planetary gear mechanism (233). The gear is coaxially arranged on the gear ring of the planetary gear mechanism (233), and the planetary gear mechanism (233) is used to increase the rotation speed of the centrifugal friction reduction device (23).
5. The reciprocating disaster rescue device according to claim 1 is characterized in that: the human body weight automatic braking system (41) comprises:

   A fixed rope-pressing block (411) is arranged at a lower position inside the first escape hanging basket (4) and the second escape hanging basket (5), and a rotating cylindrical pressing block is arranged at the upper end of the fixed rope-pressing block (411);

   A movable rope pressing block (412) is movably arranged above the fixed rope pressing block (411), a rotating cylindrical pressing block is arranged at the lower end of the movable rope pressing block (412), the cylindrical pressing block on the fixed rope pressing block (411) and the cylindrical pressing block on the movable rope pressing block correspond to each other in an alternating manner, and are used to tighten or loosen the steel rope (3);

   A rocker arm pressing block (413) is hingedly arranged above the movable rope pressing block (412), and the movable rope pressing block (412) is hingedly connected to the middle of the rocker arm pressing block (413) and is used to press down the movable rope pressing block (412);

   The shift fork gear (414) is arranged beside the rocker arm pressing block (413), and the upper part of the rocker arm pressing block (413) is clamped in the shift fork of the shift fork gear (414) for shifting the rocker arm pressing block (413) up and down;

   The handle root gear (415) meshes with the teeth of the shift fork gear (414), the handle root gear (415) is connected to one end of the handle (42) through its axis, and the other two ends of the handle (42) extend out of the first escape hanging basket (4) and the second escape hanging basket (5);

   The rope-pressing block reset spring (416) has a first end fixedly disposed on the escape basket housing above the rocker arm pressure block (413), and a second end connected to the rocker arm pressure block (413) for pulling the rocker arm pressure block (413) to reset.
6. A reciprocating disaster rescue device according to claim 5, characterized in that: the upper end of the rocker arm pressing block (413) is connected to a safety rope ring (6), the safety rope ring (6) passes through the lower ends of the first escape hanging basket (4) and the second escape hanging basket (5), and the safety rope The lifting ring (6) is used to connect the safety rope (61);

   During the descent of the first escape hanging basket (4) or the second escape hanging basket (5), the escapee's own weight pulls the rocker arm pressing block (413) downwards through the safety rope hanging ring (6) to form a self-locking state;

   The transmission ratio between the handle root gear (415) and the shift fork gear (414) is less than 1.
7. According to the reciprocating disaster rescue device described in claim 1, it is characterized in that: two fixed pulleys (43) are respectively arranged on both sides of the human body weight automatic braking system (41), and the fixed pulleys (43) are used to change the direction of the steel rope (3); the steel rope (3) on the fixed pulleys (43) on the left and right sides of the human body weight automatic braking system (41) moves in opposite directions, which is used to offset the torque generated when the steel rope (3) is running.
8. A reciprocating disaster rescue device according to claim 1, characterized in that: a steel rope tightening device (11) is arranged on the mounting hanger (1), which is used to tighten the steel rope (3) wound on the steel rope retracting winch (2), and the steel rope tightening device (11) includes a tightening positioning block (111), a tightening telescopic rod (112), a tightening block (113) and a reset spring (114), the tightening positioning block (111) is arranged on the mounting hanger (1), the tightening telescopic rod (112) is movably arranged on the tightening positioning block (111), the tightening block (113) is arranged at the lower end of the tightening telescopic rod (112), the lower end of the tightening block (113) is in contact with the steel rope (3) on the steel rope retracting winch (2), and the reset spring (114) is coaxially arranged on the tightening telescopic rod (112).
9. A reciprocating disaster rescue device according to any one of claims 1 or 2, characterized in that: the steel rope steering disc (24) is coaxially arranged on the central gear shaft of the planetary gear mechanism (233), and a steel rope tightening roller (241) is arranged below the steel rope steering disc (24);

   A handle (7) is respectively arranged on the outer shell of the first escape hanging basket (4) and the second escape hanging basket (5), and the two handles (7) are respectively arranged in the middle of the first escape hanging basket (4) and the second escape hanging basket (5).
10. A reciprocating disaster rescue device according to any one of claims 1 or 2, The invention is characterized in that the contact surface between the fixed installation sleeve (22) and the brake block (232) is a rough surface, and cylindrical external teeth or straight knurling or mesh knurling are arranged on the inner wall of the fixed installation sleeve (22) and the arc surface of the brake block (232) contacting the fixed installation sleeve (22);

    The contact surface between the fixed installation sleeve (22) and the gear ring of the planetary gear mechanism (233) is provided with cylindrical internal teeth, and the outer side of the gear ring of the planetary gear mechanism (233) is provided with cylindrical external teeth meshing with the cylindrical teeth of the fixed installation sleeve (22);

    The tooth height of the cylindrical external teeth or straight knurling on the arc surface of the inner wall of the fixed installation sleeve (22) and the brake block (232) contacting the fixed installation sleeve (22) does not exceed 0.5 mm.