A reciprocating disaster rescue device

Abstract

This invention discloses a reciprocating disaster rescue device, comprising a mounting bracket installed at a high location and a steel cable winding winch below the mounting bracket. Two escape baskets for vertical lifting and lowering are connected below the steel cable winding winch via steel cables. The steel cable winding winch is equipped with a floor height positioning device, and a centrifugal friction deceleration device is coaxially mounted inside the winch. An automatic self-weight braking system is installed inside the escape baskets, and the steel cables inside the escape baskets are mounted on the automatic self-weight braking system. This invention utilizes the alternating vertical movement of the two escape baskets to achieve reciprocating self-rescue and mutual rescue escape. The floor height positioning device determines different floor heights, and the centrifugal friction deceleration device and the automatic self-weight braking system utilize a triple force-saving mechanism to control deceleration. The automatic self-weight braking system uses the escapee's own weight for emergency braking to form a self-locking mechanism, ensuring the safety of the escapee during emergency escape.

Description

Technical Field

[0001] This invention relates to the field of life-saving equipment technology, and is applied to emergency self-rescue, mutual rescue and escape of people in high-rise buildings such as office buildings and high-rise residential buildings or cliffs. In particular, it relates to a reciprocating disaster rescue device. Background Technology

[0002] With the modernization of cities, high-rise buildings are increasing year by year, improving land utilization but also increasing the difficulty of disaster relief and escape in high-rise buildings, such as in the event of fire or earthquake. Fire prevention and firefighting in high-rise buildings has always been a major challenge for fire safety. Firstly, high-rise buildings have many vertical shafts such as stairwells, elevator shafts, pipe shafts, ventilation ducts, and cable shafts. If fire separation is not properly handled, these shafts can act like towering chimneys during a fire, easily creating a "chimney effect" and becoming pathways for the rapid spread of fire. Secondly, the large number of floors and long vertical distances in high-rise buildings mean that evacuation from stairwells to the ground or other safe locations takes a long time, hindering personnel evacuation. Thirdly, firefighting from the outside is extremely difficult in high-rise buildings, hindering rapid rescue efforts; generally, self-rescue is the primary method, relying mainly on indoor fire-fighting facilities. Therefore, it is necessary to install life-saving and fire-fighting equipment in high-rise buildings to ensure the safety of people living in them.

[0003] Among existing high-rise escape equipment, electric or mechanical rope descent escape methods are generally used. Most fires in buildings are caused by short circuits or improper use of fire. Short circuits or open flames can trigger circuit breakers, making electrically controlled descent escape devices highly susceptible to electrical interference and unusable. Rechargeable electric descent escape devices require a sufficient power supply in advance, but fires and earthquakes are sudden disasters; without power, escape devices cannot be used, rendering rechargeable electric descent escape devices impractical. Therefore, purely mechanical escape devices are more suitable for escape and rescue in high-rise buildings.

[0004] Among existing mechanical escape devices, commonly used rappelling equipment is difficult to operate, often requiring multiple people to complete the rappelling escape, which is not conducive to emergency evacuation and self-rescue of people in high-rise buildings. For example, the Chinese invention patent application number 201710732631.6 describes a method where the device is placed in a suitable escape location, secured with a locking buckle, a safety harness is placed under the armpits and its tightness is adjusted, the rope reel is thrown horizontally to the ground, the figure-eight descender is attached to the desired descent position on the steel cable and connected to the safety harness, and then the figure-eight descender is controlled to slowly descend to the ground. Finally, the safety harness is removed and the person leaves the danger zone. This invention patent also requires multiple people to slowly lower the steel cable on the ground, making the operation difficult. Furthermore, the deceleration effect of the figure-eight descender is largely manually controlled, requiring the rappeller to have certain rappelling operation knowledge. If the people below do not cooperate well, the rappeller may fall and be injured, or even lose their life.

[0005] When a fire breaks out, trapped people are prone to fear, panic, and tension during the descent to escape. In such a state of mind, it is difficult for them to concentrate on operating the complex escape devices. If the escape devices do not have automatic deceleration or emergency braking and self-locking functions, people are likely to fall at high speed, causing serious physical injuries or even death.

[0006] Therefore, there is a need to design a high-rise escape device suitable for ordinary people who lack knowledge and practical skills in rappelling and descent. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a reciprocating high-rise self-rescue and mutual rescue escape device that is easy to operate, highly safe, has a good deceleration effect, has an emergency self-locking function, and can rescue trapped people an unlimited number of times.

[0008] This invention is achieved through the following technical solution:

[0009] A reciprocating disaster rescue device includes an installation bracket (1) installed on a high-rise building, a steel cable winding winch (2) is provided below the installation bracket (1), and a first escape basket (4) and a second escape basket (5) for vertical lifting are connected below the steel cable winding winch (2) via a steel cable (3).

[0010] The steel rope winding winch (2) is equipped with a floor height positioning device (21) for adjusting the winding length of the positioning steel rope (3);

[0011] A fixed mounting jacket (22) is fixedly installed below the mounting bracket (1). The steel rope winding winch (2) is coaxially and movably installed on the fixed mounting jacket (22). A centrifugal friction deceleration device (23) is installed inside the fixed mounting jacket (22). The centrifugal friction deceleration device (23) is driven to rotate by the winding and unwinding of the steel rope (3). The centrifugal friction deceleration device (23) rubs against the inner wall of the fixed mounting jacket (22) by the centrifugal force generated by the rotation, which is used to reduce the winding and unwinding speed of the steel rope (3).

[0012] The first escape basket (4) and the second escape basket (5) are equipped with a human body weight automatic braking system (41). The steel rope (3) inside the first escape basket (4) and the second escape basket (5) is set on the human body weight automatic braking system (41). The human body weight automatic braking system (41) is connected to the mounting end of the handle (42). The gripping end of the handle (42) extends out of the outside of the escape basket. The escape personnel are suspended on the human body weight automatic braking system (41) by the safety rope (61). It is used to automatically brake when the escape personnel ride the escape basket to escape. The handle (42) is used to control the descent 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 weight and will not slide down.

[0013] The first escape basket (4) and the second escape basket (5) are respectively suspended by folded steel ropes (3) to form double steel ropes (3) for load bearing. The first escape basket (4) and the second escape basket (5) move up and down alternately to escape.

[0014] Furthermore, the first end of the steel rope (3) is fixedly mounted 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 braking system (41) inside the second escape basket (5), and then passes out from the second escape basket (5) from above; a steel rope deflector (24) is provided inside the steel rope winding winch (2), and the steel rope (3) that passes out from the second escape basket (5) changes direction after passing through the steel rope deflector (24) and passes through the first escape basket (4) from above, passes through the human body weight automatic braking system (41) inside the first escape basket (4), and then passes out from the first escape basket (4) from above, and the steel rope (3) that passes out is wound in the winch of the steel rope winding winch (2).

[0015] Furthermore, the floor height positioning device (21) includes:

[0016] The positioning hole (211) is circumferentially set on the steel rope winding winch (2);

[0017] The positioning pin (212) is installed on the mounting plate below the mounting bracket (1), and the position of the positioning pin (212) matches the position of the positioning hole (211).

[0018] Furthermore, the steel rope (3) used by the floor height positioning device (21) has a gap length of 1 to 1.5 meters between its length and the ground of the lowest floor.

[0019] Furthermore, the centrifugal friction deceleration device (23) includes:

[0020] Centrifugal chute (231) is radially disposed inside the fixed mounting jacket (22);

[0021] Braking blocks (232): Two braking blocks (232) are slidably disposed in the centrifugal slide groove (231). When the centrifugal slide groove (231) rotates, the braking blocks (232) are thrown outward by centrifugal force and rub against the inner wall of the fixed mounting jacket (22).

[0022] The planetary gear mechanism (233) is located behind the centrifugal slide (231). The centrifugal slide (231) is mounted on the central gear of the planetary gear mechanism (233). The steel rope winding winch (2) is coaxially mounted on the gear ring of the planetary gear mechanism (233). The planetary gear mechanism (233) is used to accelerate the rotational speed of the centrifugal friction deceleration device (23).

[0023] Furthermore, the aforementioned automatic braking system based on human body weight (41) includes:

[0024] The fixed rope pressing block (411) is set in the lower part of the first escape basket (4) and the second escape basket (5), and a rotating cylindrical pressing block is provided at the upper end of the fixed rope pressing block (411);

[0025] The movable rope pressing block (412) is movably set above the fixed rope pressing block (411). The lower end of the movable rope pressing block (412) is provided with a rotating cylindrical pressing block. The cylindrical pressing blocks on the fixed rope pressing block (411) and the cylindrical pressing blocks on the movable rope pressing block are staggered and correspond to each other, which are used to tighten or loosen the steel rope (3).

[0026] The rocker arm pressure block (413) is hinged above the movable rope pressure block (412), and the movable rope pressure block (412) is hinged in the middle of the rocker arm pressure block (413) for pressing down the movable rope pressure block (412).

[0027] The shift fork gear (414) is located next to the rocker arm pressure block (413). The upper part of the rocker arm pressure block (413) is engaged in the shift fork of the shift fork gear (414) and is used to move the rocker arm pressure block (413) up and down.

[0028] The gear (415) at the root of the handle meshes with the gear (414) at the fork. The shaft of the gear (415) at the root of the handle is connected to one end of the handle (42), and the other two ends of the handle (42) extend out of the outside of the first escape basket (4) and the second escape basket (5).

[0029] The rope-pressing block reset spring (416) has its first end fixedly mounted on the escape basket shell above the rocker arm pressing block (413), and its second end connected to the rocker arm pressing block (413) for pulling the rocker arm pressing block (413) to reset.

[0030] Furthermore, a safety rope sling (6) is connected to the upper end of the rocker arm pressure block (413). The safety rope sling (6) passes through the lower ends of the first escape basket (4) and the second escape basket (5). The safety rope sling (6) is used to connect the safety rope (61).

[0031] During the descent of the first escape basket (4) or the second escape basket (5), the weight of the person escaping pulls the rocker arm block (413) down through the safety rope ring (6) to form a self-locking mechanism.

[0032] Furthermore, the transmission ratio between the root gear (415) of the handle and the shift fork gear (414) is less than 1.

[0033] Furthermore, the automatic braking system (41) based on human body weight is provided with two fixed pulleys (43) on each side. 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 automatic braking system (41) moves in opposite directions to counteract the torque generated when the steel rope (3) is running.

[0034] 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 winding winch (2). The steel rope tightening device (11) includes a tightening positioning block (111), a tightening telescopic rod (112), a tightening block (113), and a return spring (114). The tightening positioning block (111) is set on the mounting bracket (1), the tightening telescopic rod (112) is movably set on the tightening positioning block (111), the tightening block (113) is set at the lower end of the tightening telescopic rod (112), and the lower end of the tightening block (113) is in contact with the steel rope (3) on the steel rope winding winch (2). The return spring (114) is coaxially set on the tightening telescopic rod (112).

[0035] Furthermore, the steel cable steering wheel (24) is coaxially mounted on the central gear shaft of the planetary gear mechanism (233), and a steel cable tightening roller (241) is provided below the steel cable steering wheel (24).

[0036] Furthermore, each of the first escape basket (4) and the second escape basket (5) is provided with a handle (7), and the two handles (7) are respectively located in the middle of the first escape basket (4) and the second escape basket (5).

[0037] Furthermore, the contact surface between the fixed mounting sleeve (22) and the brake block (232) is a rough surface, and cylindrical external teeth, straight knurling, or mesh knurling are provided on the inner wall of the fixed mounting sleeve (22) and the arc surface of the brake block (232) that contacts the fixed mounting sleeve (22).

[0038] The contact surface between the fixed mounting 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 that mesh with the cylindrical teeth of the fixed mounting sleeve (22).

[0039] The height of the cylindrical external teeth or straight knurled teeth on the arc surface of the inner wall of the fixed mounting sleeve (22) and the brake block (232) in contact with the fixed mounting sleeve (22) does not exceed 0.5 mm.

[0040] Working principle of the invention:

[0041] The first escape basket (4) and the second escape basket (5) of this invention utilize a steel rope (3) that is folded and pulled back and forth. When the first trapped person descends to escape, a section of steel rope (3) wrapped around the steel rope winding winch (2) serves as the release rope, and a section of steel rope (3) connected to the steel rope deflector (24) serves as the fixing rope. After the first trapped person descends to escape, a section of steel rope (3) connected to the steel rope winding winch (2) and a section of steel rope (3) connected to the fixing ring of the mounting bracket (1) serve as the fixing ropes of the first escape basket (4) and the second escape basket (5), respectively. The steel rope deflector (24) pulls a section of steel rope (3) of the first escape basket (4) and the second escape basket (5) as the winding and releasing rope during lifting and lowering. The first escape basket (4) and the second escape basket (5) alternately lift and lower through the winding and releasing of the rope, realizing reciprocating self-rescue and mutual rescue escape.

[0042] The steel cable reel (2) releases the steel cable by rotating. After the first trapped person descends and escapes, the actual length of the released steel cable (3) 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 cable reel (21), thereby limiting the length of the longest steel cable (3) that the steel cable reel (2) can release when it rotates, preventing the actual length of the released steel cable (3) from being too long, causing the escape basket to fall and causing secondary damage. After the rescue is completed, the operator removes the positioning pin (212) to reset the device and prepare it for the next use.

[0043] Based on the structure of the device described above, each time the first trapped person to escape must be able to obtain the actual length of the steel rope (3) released, which may be applicable to rescues at different floor heights.

[0044] The centrifugal friction deceleration device (23) utilizes the descent speed of the escape basket (4, 5) to drive the steel cable deflector (24) to rotate. The rotation of the steel cable deflector (24) drives the coaxially connected centrifugal slide (231) to rotate. The centrifugal force generated by the rotation of the centrifugal slide (231) throws the two brake blocks (232) outward. The brake blocks (232) rub against the inner wall of the fixed mounting jacket (22) to achieve braking and deceleration. The faster the descent speed of the escape basket (4, 5), the greater the centrifugal force thrown outward by the two brake blocks (232), and the greater the friction between the brake blocks (232) and the inner wall of the fixed mounting jacket (22), thus achieving a safe descent.

[0045] In the human body weight automatic braking system (41), the weight of the escapee pulls the rocker arm block (413) down, and the rocker arm block (413) down drives the movable rope pressing block (412) down, pressing the steel rope (3) between the movable rope pressing block (412) and the fixed rope pressing block (411) to achieve self-locking; the long handle (42) is used to rotate the root gear (415) of the handle, and the small gear of the root gear (415) drives the shift fork gear (414). The large gear and the shift fork gear (414) shift the rocker arm pressure block (413), and through the lever principle and gear reduction, multiple labor-saving measures are achieved. The rocker arm pressure block (413) moves upward to lift its own weight. At the same time, the rocker arm pressure block (413) pulls the movable rope pressure block (412) upward, changing the force of the fixed rope pressure block (411) and the movable rope pressure block (412) squeezing the steel rope (3), so that the descent speed of the escape basket can be manually and autonomously controlled by the escapers.

[0046] The advantages of this invention compared to the prior art are:

[0047] This invention uses the human body weight to control the movable rope pressing block (412) to automatically press the steel rope (3) to form a self-locking mechanism and emergency braking. This prevents the escapers from being unable to operate the handle due to panic, which would cause the fixed rope pressing block (411) and the movable rope pressing block (412) that are pressing the steel rope (3) to loosen, resulting in deceleration failure and accelerating the descent rate of the escape basket, thus causing life-threatening injuries to the escapers.

[0048] This invention forms a triple force-saving lever by using the rocker arm pressure block (413) lever, the small gear at the root of the handle to drive the large gear of the shift fork, and the handle (42) lever. By utilizing the lever principle and cooperating with the gear reduction mechanism, a greater braking force is obtained. The minimum pulling force required for the escapee to pull the handle does not exceed 2% of the escapee's weight, which greatly reduces the force required for the escapee to pull the handle (42). The elderly and children can also easily pull the handle (42), making it easier for the escapee to control the descent speed of the escape basket. Furthermore, the stroke of the braking mechanism is increased, making the descent action more decisive.

[0049] The centrifugal friction deceleration device (23) of the present invention uses centrifugal force to throw the brake block (232) outward and rub it against the inner wall of the fixed installation jacket (22) to achieve automatic deceleration when the escape basket descends. By increasing the friction force, the descent rate of the escape basket is reduced. The faster the escape basket speed, the greater the centrifugal force thrown outward by the brake block (232) and the better the braking effect. Thus, it automatically adapts to the descent rate of the escape basket and decelerates by friction.

[0050] The present invention uses a centrifugal friction deceleration device (23) to automatically control deceleration and a handle (42) to manually control the descent rate. The combination of automatic deceleration and manual control achieves dual deceleration when the escape basket descends. The descent speed can be controlled within two meters per second. The descent speed meets international standards and prevents excessive impact force from causing injury to the legs of the escapers when landing, thus ensuring the safety of the escapers.

[0051] This invention uses a floor height positioning device (21) to position the floor height, thereby improving the control accuracy of the length of the steel rope (3). The floor height positioning device (21) can be set to different lengths of the steel rope (3) to be pulled out, which is suitable for rescue at different floor heights. The positioning pin (212) in the floor height positioning device (21) positions the length of the steel rope (3) released during the first descent of the escapee, maintaining a gap length of 1-1.5 meters between the release length of the steel rope (3) and the lowest floor, so as to avoid the escapee directly touching the ground when the device is out of control, thus preventing the escapee from being injured twice.

[0052] This invention has a simple structure, small size, and is easy to store and carry. The reciprocating structure of the escape method can save the ascent time of the escape device (or half the time), and can rescue trapped people multiple times from the left and right, so as to achieve fast, efficient, safe and autonomous escape. Attached Figure Description

[0053] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0054] Figure 2 This is a circuit layout diagram of the steel rope of the present invention;

[0055] Figure 3 This is a three-dimensional structural diagram of the internal structure of the steel rope winding winch of the present invention;

[0056] Figure 4 This is a three-dimensional structural diagram of the steel rope tightening device of the present invention for pressing the steel rope;

[0057] Figure 5 This is a front view of the steel rope winding winch of the present invention;

[0058] Figure 6 For the present invention Figure 5 Schematic diagram of the cross section at point AA;

[0059] Figure 7 This is a three-dimensional structural diagram of the first and second escape baskets of the present invention.

[0060] Figure 8 For the present invention Figure 2 A magnified view of a section at point B in the middle;

[0061] Figure 9 This is a three-dimensional schematic diagram of the force-saving mechanism in the human body weight automatic braking system of the present invention;

[0062] Figure 10 This is a diagram illustrating the usage state of the invention during escape.

[0063] Figure 11 For the present invention Figure 10 A magnified view of a section at point A in the middle;

[0064] Figure 12 This is a front view of the second structure of the centrifugal friction deceleration device of the present invention;

[0065] Figure 13 This is a three-dimensional structural view of the foldable mounting bracket of the present invention.

[0066] Numbering on the map:

[0067] 1- Install the hanger;

[0068] 11-Steel rope tightening device; 111-Tightening positioning block; 112-Tightening telescopic rod; 113-Tightening block; 114-Reset spring; 12-Steel rope winding and unwinding pulley;

[0069] 2-Steel rope winding winch; 21-Floor height positioning device, 211-Positioning hole, 212-Positioning pin; 22-Fixed mounting jacket; 23-Centrifugal friction reduction device, 231-Centrifugal chute, 232-Brake block, 233-Planetary gear mechanism; 24-Steel rope deflector, 241-Steel rope tightening roller;

[0070] 3-Steel rope;

[0071] 4-First Escape Basket;

[0072] 41-Automatic braking system based on human body weight; 411-Fixed rope pressing block; 412-Modible rope pressing block; 413-Rocker arm pressing block; 414-Shift fork gear; 415-Handle root gear; 416-Rope pressing block return spring; 42-Handle; 43-Fixed pulley; 44-Windproof whip.

[0073] 5-Second Escape Basket;

[0074] 6-Safety rope eyelet, 61-Safety rope;

[0075] 7- Grip. Detailed Implementation

[0076] To enable those skilled in the art to better understand the technical solution of the present invention, the specific embodiments are described in detail below with reference to the accompanying drawings.

[0077] Example 1: As Figure 1-11 As shown, a reciprocating disaster rescue device includes a mounting bracket 1 installed on a high-rise building. A steel cable winding winch 2 is installed below the mounting bracket 1. A first escape basket 4 and a second escape basket 5 for vertical lifting and lowering are connected below the steel cable winding winch 2 via a steel cable 3. A floor height positioning device 21 is installed on the steel cable winding winch 2. The steel cable winding winch 2 is coaxially movably mounted on a fixed mounting jacket 22. A centrifugal friction deceleration device 23 is installed inside the fixed mounting jacket 22. A human body weight automatic braking system 41 is installed inside the first escape basket 4 and the second escape basket 5. The steel cable 3 inside the first escape basket 4 and the second escape basket 5 is installed on the human body weight automatic braking system 41. The human body weight automatic braking system 41 is connected to the mounting end of a handle 42. The gripping end of the handle 42 extends out of the outside of the first escape basket 4 and the second escape basket 5. When the steel cable winding winch 2 rotates, the first escape basket 4 and the second escape basket 5 move up and down alternately.

[0078] In an embodiment, such as Figure 3 , Figure 4 , Figure 6 As shown, the floor height positioning device 21 includes positioning holes 211 and positioning pins 212. Several positioning holes 211 are circumferentially arranged on the steel rope winding winch 2, and the positioning pins 212 are installed on the mounting plate below the mounting bracket 1. The position of the positioning pins 212 matches the position of the positioning holes 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. Other trapped people on the high floor can determine the length of the steel rope 3 pulled out from the steel rope winding winch 2 according to the height of the first trapped person's descent. The steel rope winding winch 2 can be set to different steel rope 3 pull-out lengths through the floor height positioning device 21, thus making it suitable for rescue at different floor heights.

[0079] In this embodiment, the steel rope 3 of the floor height positioning device 21 is positioned with a gap of 1 to 1.5 meters between it 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 to ensure the safety of trapped personnel when they escape.

[0080] In an embodiment, such as Figure 3 , Figure 6As shown, the centrifugal friction deceleration device 23 is used to reduce the speed of the steel rope 3 winding and unwinding. It includes a centrifugal chute 231 radially arranged inside the steel rope winding and unwinding winch 2. Two brake blocks 232 are slidably arranged inside 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. The gear ring of the planetary gear mechanism 233 is coaxially fixed on the inner wall of the fixed mounting jacket 22.

[0081] In an embodiment, such as Figure 6 As shown, a steel cable deflector 24 is provided at the end of the central gear shaft of the planetary gear mechanism 233. The steel cable 3 between the first escape basket 4 and the second escape basket 5 is set in the groove of the steel cable deflector 24. When one of the escape baskets moves downward, the steel cable 3 drives the steel cable deflector 24 to rotate, thereby driving the central gear of the planetary gear mechanism 233, which is fixed on the same axis, to rotate. When the central gear of the planetary gear mechanism 233 rotates, the two brake blocks 232 in the centrifugal slide 231 are thrown outward by centrifugal force and rub against the inner wall of the fixed mounting jacket 22. By increasing the friction, the rotational speed of the central gear of the planetary gear mechanism 233 and the steel cable deflector 24 is reduced, thereby reducing the moving speed of the steel cable 3 and driving a reduction in the descent speed of the first escape basket 4 and the second escape basket 5, thus realizing automatic deceleration when the escape baskets descend.

[0082] In this embodiment, the greater the descent rate of the first escape basket 4 or the second escape basket 5, the greater the rotational speed of the steel rope 3 driving the steel rope deflector 24 and the centrifugal chute 231, and the greater the centrifugal force thrown outward by the brake block 232. This increases the friction between the brake block 232 and the inner wall of the fixed mounting jacket 22, and the better the effect of the frictional force braking the rotation of the central gear shaft of the planetary gear mechanism 233. Therefore, the descent rate of the first escape basket 4 and the second escape basket 5 is proportional to the frictional force of the brake block 232. The centrifugal friction deceleration device 23 can automatically adapt to the descent rate of the first escape basket 4 or the second escape basket 5 and decelerate by friction.

[0083] In an embodiment, such as Figure 3 As shown, the gear ring in the planetary gear mechanism 233 is fixed and does not rotate, the central gear shaft is positioned and rotates, and multiple planetary gears rotate around the central gear. The planetary gear mechanism 233 is used to position the central gear shaft while accelerating the rotation speed of the centrifugal friction deceleration device 23, thereby improving the braking effect.

[0084] In an embodiment, such as Figure 2 , Figure 6As shown, a steel rope tightening roller 241 is provided below the steel rope deflector 24. The steel rope tightening roller 241 is used to increase the friction between the steel rope 3 and the steel rope deflector 24, and to prevent the steel rope 3 from slipping on the steel rope deflector 24. This would cause the central gear of the planetary gear mechanism 233 and the centrifugal slide 231 to rotate slowly or not at all, resulting in poor deceleration effect of the centrifugal friction deceleration device 23 on the speed of steel rope 3 winding and unwinding, which would affect the life safety of the escapees.

[0085] In an embodiment, such as Figure 1 , Figure 2 As shown, the first end of the steel rope 3 is tied and fixed to the fixing ring on the left side of the mounting bracket 1. The second end of the steel rope 3 enters from above the second escape basket 5, passes through the human body weight automatic braking system 41 inside the second escape basket 5, and then exits from above the second escape basket 5. The steel rope 3 that exits from above the second escape basket 5 is changed direction by the steel rope deflector 24 and then enters from above the first escape basket 4. After passing through the human body weight automatic braking system 41 inside the first escape basket 4, it exits from above the first escape basket 4. The steel rope 3 that has exited is wound and set inside the winch of the steel rope winding winch 2.

[0086] In an embodiment, such as Figure 1 , Figure 2 , Figure 10 As shown, the first escape basket 4 and the second escape basket 5 are respectively suspended by folding steel rope 3 to form a double steel rope 3 load-bearing structure. It is fire-resistant and has a strong load-bearing capacity, which solves the problem of loosening caused by the failure of pre-tightening of steel rope 3 due to torsional force during operation.

[0087] In an embodiment, as shown in the figure Figure 1 , Figure 2 , Figure 10 As shown, the first escape basket 4 and the second escape basket 5 are in the same position when not in use. When in use, the first escape basket 4 and the second escape basket 5 can move up and down alternately. When the first trapped person uses the first escape basket 4 to escape, the second escape basket 5 remains stationary. When the first trapped person reaches the ground, the first escape basket 4 is at the bottom floor, and the second escape basket 5 is at the initial position on the upper floor. When the second trapped person uses the second escape basket 5 located on the upper floor to descend and escape, the first escape basket 4 is pulled up by the descending second escape basket 5. When the second trapped person reaches the ground, the rising first escape basket 4 reaches the window of the escape floor on the upper floor, and the third trapped person can then use the first escape basket 4 to descend and escape. In this way, the first escape basket 4 and the second escape basket 5 can alternately rise and fall, allowing for an unlimited number of rescues of trapped persons, saving the ascent time of the escape device, and achieving high-speed, efficient, safe, and autonomous escape.

[0088] In an embodiment, such as Figure 7 , Figure 9As shown, the human body weight automatic braking system 41 includes a fixed rope pressing block 411 located at the lower part of the first escape basket 4 and the second escape basket 5. A movable rope pressing block 412 is movably arranged above the fixed rope pressing block 411. A rocker arm pressing block 413 is hinged to the escape basket shell above the movable rope pressing block 412. The movable rope pressing block 412 is hinged to the middle of the rocker arm pressing block 413. A shift fork gear 414 is arranged next to the rocker arm pressing block 413. The upper part of the rocker arm pressing block 413 is engaged in the shift fork of the shift fork gear 414. The shift fork gear 414 meshes with a handle root gear 415. One end of the handle 42 is coaxially connected to the shaft of the handle root gear 415. The other end of the handle 42 extends out of the outside of the first escape basket 4 and the second escape basket 5.

[0089] In an embodiment, such as Figure 7 , Figure 8 As shown, a fixed cylindrical pressure block is provided at the upper end of the fixed rope pressure block 411, and a movable cylindrical pressure block is provided at the lower end of the movable rope pressure block 412. The fixed cylindrical pressure block on the fixed rope pressure block 411 and the movable cylindrical pressure block on the movable rope pressure block 412 are staggered and correspond to each other. The cylindrical 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.

[0090] In an embodiment, such as Figure 7 , Figure 8 As shown, the fixed cylindrical pressure block and the movable cylindrical pressure block are cylindrical with rounded surfaces. When the steel rope 3 is squeezed by the fixed cylindrical pressure block and the movable cylindrical pressure block, there is a rounded surface to transition, which prevents the sharp edges from causing frictional damage to the steel rope 3. If the steel rope 3 operates on the sharp edges for a long time, it may break, affecting the life safety of the escapees.

[0091] In an embodiment, such as Figure 7 As shown, a rope-pressing block reset spring 416 is provided above the fixed rope-pressing block 411. The rope-pressing block reset spring 416 is used to pull the fixed rope-pressing block 411 upward to reset, and drive the handle 42 downward to reset through the rocker arm pressing block 413, the shift 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.

[0092] In an embodiment, such as Figure 7 , Figure 9As shown, a safety rope loop 6 is connected to the upper end of the rocker arm pressure block 413. The safety rope loop 6 passes through the lower end of the first escape basket 4 and the second escape basket 5. The safety rope loop 6 is used to connect the safety rope 61, which is used to secure the body of the escaped person. During the descent of the escape basket 4, the weight of the escaped person pulls the rocker arm pressure block 413 downward through the safety rope loop 6. The rocker arm pressure block 413 drives the movable rope pressure block 412 downward to press the steel rope 3 tightly between the fixed rope pressure block 411 and the movable rope pressure block 412, forming a self-locking mechanism. This prevents the escaped person from being unable to control the handle 42 to descend due to panic, which would cause the compression and deceleration of the fixed rope pressure block 411 and the movable rope pressure block 412 to fail, resulting in the escape basket 4 descending too fast and causing injury to the escaped person.

[0093] In this embodiment, during the descent of the first escape basket 4 or the second escape basket 5, the evacuee controls the descent rate by pulling down the handle 42. When the handle 42 is pulled down, the gear 415 at the base of the handle rotates counterclockwise, which in turn drives the shift fork gear 414 to rotate clockwise. The shift fork on the shift fork gear 414 pushes the rocker arm pressure block 413 upward, which drives the movable rope pressure block 412 to move upward and release the steel rope 3, so that the escape basket 4 can slide down on the steel rope 3. 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.

[0094] In this embodiment, the transmission ratio between the handle root gear 415 and the shift fork gear 414 is less than 1. The small gear of the handle root gear 415 drives the large gear of the shift fork gear 414 to form a force-saving mechanism, thereby reducing the force required for the escapee to pull down the handle 42 and reducing the difficulty for the escapee to pull the handle 42.

[0095] In an embodiment, such as Figure 9 As shown, the human body weight automatic braking system 41 is equipped with a triple force-saving lever arm. The lever formed by the length of the handle 42 is the first force-saving lever arm; the small gear of the gear 415 at the root of the handle drives the large gear of the shift fork gear 414, which is the second force-saving lever arm; the distance from the mounting hinge shaft of the rocker arm pressure block 413 to the shift fork of the shift fork gear 414 forms the third force-saving lever arm. The triple force-saving lever arm greatly reduces the force required for the escapee to pull down the handle 42, allowing the escapee to easily pull their own weight, thereby better controlling the descent rate of the escape basket 4.

[0096] In this embodiment, the triple lever arm of the human body weight automatic braking system 41, taking an escapee weighing 100 kg as an example, without considering transmission losses:

[0097] The resistance arm L1 of the third-level effort-saving lever arm is the distance from the connection point between the safety rope loop 6 and the rocker arm pressure block 413 to the hinge axis between the rocker arm pressure block 413 and the movable rope-pressing block 412. The design size of the resistance arm L1 is approximately 35mm. The power arm L2 is the distance from the contact point between the shift 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 approximately 46mm. The resistance F1 is the weight of the escapee, 1000N. According to the lever arm calculation formula:

[0098] Resistance × Resistance arm = Effort × Effort arm;

[0099] That is: L1×F1=L2×F2;

[0100] 0.035m × 1000N = 0.046m × F²;

[0101] F2≈760.87N;

[0102] The second force-saving lever arm uses gear transmission, with a torque ratio of 1 / transmission ratio. The pitch circle diameter of the shift fork gear 414 is 34mm, and the pitch circle diameter of the handle root gear 415 is designed to be 16mm. Therefore, the torque ratio is 16 / 34, and the resistance F3 = F2. According to the lever arm calculation formula: Torque = Circumferential force × Lever arm, since the torque and circumferential force are equal when the gears are meshing and rotating, the torque ratio is the same as the lever arm ratio.

[0103] Resistance × Resistance arm = Effort × Effort arm;

[0104] That is: L3×F3=L4×F4;

[0105] 16 × 760.87 N = 34 × F4;

[0106] F4≈358N;

[0107] The resistance arm L5 of the first-level force-saving lever arm is the pitch circle radius of the handle root gear 415, which is designed to be approximately 8mm. The power arm L6 is the length of the handle 42, which is designed to be approximately 160mm. The resistance F5 = F4, and the power F6 is the pulling force exerted by the escapee on the handle 42. According to the lever arm calculation formula:

[0108] Resistance × Resistance arm = Effort × Effort arm;

[0109] That is: L5×F5=L6×F6;

[0110] 8 × 358 N = 160 × F6;

[0111] F6 = 17.9 N;

[0112] Therefore, without considering transmission losses, the minimum pulling force required for an escapee weighing 100KG to pull the handle 42 is 17.9N, or 1.79KG. The minimum pulling force is only 1.79% of the escapee's body weight. Through the transmission of the triple force-saving lever arm mechanism, not only adults can pull the handle 42 with less effort, but the elderly and children can also pull the handle 42 easily. It is suitable for people of different weights and physical conditions, and has wide applicability.

[0113] In an embodiment, such as Figure 2 , Figure 8 As shown, the automatic self-weight braking system 41 in the first escape basket 4 or the second escape basket 5 is equipped with two fixed pulleys 43 on each side. 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, it will generate circumferential torque. The steel rope 3 on the left and right fixed pulleys 43 of the automatic self-weight braking system 41 moves in opposite directions, and the circumferential torque generated by the steel rope 3 on the fixed pulleys 43 on both sides is also opposite. The two cancel each other out, so as to avoid the steel rope 3 from breaking due to uneven stress on the steel wires caused by loosening, which would affect the life safety of the escaped personnel.

[0114] In an embodiment, such as Figure 2 , Figure 7 As shown, the bottom of the first escape basket 4 or the second escape basket 5 is equipped with a windproof whip 44, and a pulley is provided on the windproof 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 due to friction with the outlet at the lower end of the first escape basket 4 or the second escape basket 5.

[0115] In an embodiment, such as Figure 4 , Figure 6 As shown, the steel rope tightening device 11 includes a tightening positioning block 111 mounted on the mounting bracket 1. A tightening telescopic rod 112 is movably mounted on the tightening positioning block 111. A tightening block 113 is mounted at the lower end of the tightening telescopic rod 112. The lower end of the tightening block 113 contacts the steel rope 3 on the steel rope winding winch 2. A return spring 114 is coaxially mounted 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 winding winch 2. The return spring 114 is used to automatically control the contact between the tightening block 113 and the steel rope 3 to prevent the steel rope 3 wound on the steel rope winding winch 2 from becoming loose and causing cross-entanglement, which would cause the steel rope 3 to jam or become difficult to wind up or down.

[0116] In an embodiment, such as Figure 1 , Figure 2 , Figure 3As shown, a steel rope winding pulley 12 is provided on the right side of the mounting bracket 1. The steel rope winding pulley 12 is used to increase the distance between the two sections of steel rope 3 that hoist the first escape basket 4, so as to prevent the steel rope 3 in the steel rope winding winch 2 from getting tangled with the other section of steel rope 3 that hoist the first escape basket 4, which would prevent the steel rope 3 in the steel rope winding winch 2 from being unable to be wound up or down.

[0117] In this embodiment, the mounting bracket 1 can be fixed by existing wall clamping or bolt installation methods. It can be freely clamped and installed on the wall of the window or on a burglarproof window with high structural strength. The installation time is short, no prior installation is required, and it is convenient to install and use.

[0118] In an embodiment, such as Figure 1 , Figure 11 As shown, each of the first escape basket 4 and the second escape basket 5 is provided with a handle 7 for easy gripping by escapers. The two handles 7 are respectively located in the middle of the first escape basket 4 and the second escape basket 5 to maintain the symmetrical balance of the escape baskets.

[0119] In this embodiment, the handle 7 can serve as a safety device for the escapee. The escapee holds the handle 7 tightly during the descent. If either the safety rope loop 6 or the safety rope 61 breaks during the escapee's descent, the escapee can hold the handle 7 tightly to prevent falling and continue waiting for rescue.

[0120] Example 2: When firefighters use fire-fighting equipment to spray water to extinguish fires, water may enter the fixed mounting sleeve 22, or grease or other liquids may accidentally enter the fixed mounting sleeve 22 during routine maintenance. This will reduce the friction between the brake block 232 and the fixed mounting sleeve 22, resulting in a significant reduction in braking effect.

[0121] This embodiment increases the roughness of the contact surface between the brake block 232 and the inner wall of the fixed mounting sleeve 22, thereby increasing the frictional force between the brake block 232 and the fixed mounting sleeve 22 and preventing slippage during friction. If the descent speed of the escape baskets 4 and 5 is too fast, the impact force generated when the escape baskets 4 and 5 land will be too large, causing secondary injuries to the lives of the escapees.

[0122] This embodiment uses, as follows: Figure 12As shown in the structure, the part 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 an involute internal tooth, and the outer side of the gear ring is a cylindrical external tooth / knurled. The cylindrical external tooth on the outer side of the gear ring of the planetary gear mechanism 233 rubs or meshes with the cylindrical internal tooth on the inner side of the fixed mounting sleeve 22. Through the sliding fit between the cylindrical external tooth or knurled and the cylindrical internal tooth, the gear ring of the planetary gear mechanism 233 and the fixed mounting sleeve 22 can be detachably connected, which is convenient for disassembly during maintenance.

[0123] In this embodiment, cylindrical external teeth, straight knurling, or mesh knurling can be provided on the arc surface where the brake block 232 contacts the fixed mounting sleeve 22. When the centrifugal friction deceleration device 23 rotates, the brake block 232 on the centrifugal friction deceleration device 23 is thrown outward and generates friction braking deceleration with the inner wall of the fixed mounting sleeve 22. The cylindrical external teeth on the brake block 232 rub against the cylindrical internal teeth on the inner side of the fixed mounting sleeve 22.

[0124] In this embodiment, the height of the cylindrical external teeth or straight knurled teeth on the arc surface of the brake block 232 that contacts the fixed mounting sleeve 22 does not exceed 0.5 mm. This prevents the brake block 232 from being directly locked due to meshing when it is thrown outward and rubs against the inner wall of the fixed mounting sleeve 22. This would prevent the centrifugal friction deceleration device 23 from being locked and unable to rotate. The steel rope deflector 24 and steel rope tightening roller 241 at the tail of the centrifugal friction deceleration device 23, which cannot rotate, would clamp the steel rope 3, causing the steel rope 3 to be unable to be alternately wound and released, thus hindering the descent of the escape basket.

[0125] In this embodiment, the mounting bracket 1 can also be configured as a folding structure or a telescopic structure, such as... Figure 13 As shown, the foldable structure of the mounting bracket 1 is formed by hinged two bracket sections. After unfolding, it is fixed and locked with bolts. Under the premise of ensuring the structural strength of the mounting bracket 1, the overall length of the mounting bracket 1 is halved by folding or telescopic means, which reduces the overall packaging length of the device of the present invention, making it convenient to store in the box and carry. Moreover, the device of the present invention is designed to weigh about 9KG, which is convenient for installation and handling, and reduces the labor intensity of installation and handling.

[0126] How this invention works:

[0127] When the first escape basket 4 and the second escape basket 5 are not in use, such as Figure 2 As shown, the steel rope 3 is wound and stored in the steel rope winding winch 2, and the first escape basket 4 and the second escape basket 5 are at the same height;

[0128] When a fire or other emergency occurs in a high-rise building, rendering the staircases, elevators, and other passageways unusable, take out the device of this invention and install the mounting bracket 1 of this device on the wall of the window or on a high-strength security window. Check whether the installation of this device is secure and safe, and ensure that there is no danger or obstruction below the window where this device is installed.

[0129] When trapped personnel use this device to escape, such as Figure 10 , Figure 11 As shown, loop one end of the safety rope 61 under the armpits on both sides of the body from back to front, and loop the other end of the safety rope 61 around one leg. Then, attach the middle of the safety rope 61 to the safety rope loop 6. Grasp the handle 7 on the escape basket with one hand and climb out of the window safely. Grasp the handle 42 with the other hand. The leg not connected to the safety rope should be braced against the outer wall of the high-rise building to control the body's direction. Then, slowly pull the handle 42 downwards. The escape basket will then move downwards. Adjust the pulling force of the handle 42 according to the descent rate of the escape basket. If the descent rate of the escape basket is fast, reduce the pulling force of the handle 42; if the descent rate of the escape basket is slow, increase the pulling force of the handle 42. If the descent rate is too fast, release the handle 42, adjust your mindset, and slowly pull the handle 42 again until the person lands safely. Then, untie the safety rope 61.

[0130] 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 wrapped around the steel rope retraction winch 2 serves as the release rope, and a section of steel rope 3 connected to the steel rope deflector 24 serves as the fixing rope. When the first trapped person is about to descend to the ground, they can use the handle 42 to descend intermittently to prevent the person from hitting the ground directly due to excessive descent speed. 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 descent height of the first trapped person to position the required length of the steel rope 3, preventing the steel rope retraction winch 2 from rotating and changing the length of the steel rope 3, and ensuring... When the escape basket 4 reaches its lowest point, it maintains a 1-1.5 meter clearance from the ground. After positioning, the second trapped person uses the second escape basket 5 to escape. At this time, a section of steel rope 3 fixed to the left fixing ring of the mounting bracket 1 serves as a fixing rope, and the steel rope 3 that pulls the first escape basket 4 serves as the release rope for the second escape basket 5. As 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. The second escape basket 5 is then pulled up by the first escape basket 4. This alternating up and down movement is repeated to achieve a reciprocating escape.

[0131] It should be noted that the technical solution of the present invention has been described in detail above, and the principle of the present invention has been described. The above description of the working principle is only for the purpose of helping to understand the core idea of ​​the present invention. It should be pointed out that for those skilled in the art, improvements and modifications can be made to the present invention without departing from the principle of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

[0132] Modifications, additions, or similar substitutions made to the described specific embodiments by those skilled in the art to which this invention pertains, as long as they do not depart from the structure of this invention or exceed the scope defined by these claims, shall all fall within the protection scope of this invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A reciprocating disaster rescue device, comprising a mounting bracket (1) installed on a high-rise building, and a steel cable winding winch (2) disposed below the mounting bracket (1), characterized in that: Below the steel cable winding winch (2), a first escape basket (4) and a second escape basket (5) for vertical lifting are connected by a steel cable (3). The steel rope winding winch (2) is equipped with a floor height positioning device (21) for adjusting the winding length of the positioning steel rope (3); A fixed mounting jacket (22) is fixedly installed below the mounting bracket (1). The steel rope winding winch (2) is coaxially and movably installed on the fixed mounting jacket (22). A centrifugal friction deceleration device (23) is installed inside the fixed mounting jacket (22). The centrifugal friction deceleration device (23) is driven to rotate by the winding and unwinding of the steel rope (3). The centrifugal friction deceleration device (23) rubs against the inner wall of the fixed mounting jacket (22) by the centrifugal force generated by the rotation, which is used to reduce the winding and unwinding speed of the steel rope (3). The first escape basket (4) and the second escape basket (5) are equipped with a human body weight automatic braking system (41). The steel rope (3) inside the first escape basket (4) and the second escape basket (5) is set on the human body weight automatic braking system (41). The human body weight automatic braking system (41) is connected to the mounting end of the handle (42). The gripping end of the handle (42) extends out of the outside of the escape basket. The escape personnel are suspended on the human body weight automatic braking system (41) by the safety rope (61). It is used to automatically brake when the escape personnel ride the escape basket (4, 5) to escape. The handle (42) is used to control the descent 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 weight and will not slide down. The first escape basket (4) and the second escape basket (5) are respectively suspended by folded steel ropes (3) to form double steel ropes (3) for load bearing. The first escape basket (4) and the second escape basket (5) move up and down alternately to escape.

2. The reciprocating disaster rescue device according to claim 1, characterized in that: One end of the steel rope (3) is fixed on the mounting bracket (1), and the other end of the steel rope (3) passes through the second escape basket (5) from above, passes through the human body weight automatic braking system (41) inside the second escape basket (5), and then passes through the second escape basket (5) from above. The steel rope winding winch (2) is equipped with a steel rope deflector (24). The steel rope (3) that passes through the second escape basket (5) is deflected by the steel rope deflector (24) and passes through the first escape basket (4) from above. After passing through the human body weight automatic braking system (41) inside the first escape basket (4), it passes through the first escape basket (4) from above. The steel rope (3) that passes through is wound in the winch of the steel rope winding winch (2).

3. The reciprocating disaster rescue device according to claim 1, characterized in that: The floor height positioning device (21) includes: The positioning hole (211) is circumferentially set on the steel rope winding winch (2); The positioning pin (212) is installed on the mounting plate below the mounting bracket (1), and the position of the positioning pin (212) matches the position of the positioning hole (211); The steel rope (3) of the floor height positioning device (21) has a gap length of 1 to 1.5 meters between its length and the ground of the lowest floor.

4. The reciprocating disaster rescue device according to claim 1, characterized in that: The centrifugal friction deceleration device (23) includes: Centrifugal chute (231) is radially disposed inside the fixed mounting jacket (22); Braking blocks (232): Two braking blocks (232) are slidably disposed in the centrifugal slide groove (231). When the centrifugal slide groove (231) rotates, the braking blocks (232) are thrown outward by centrifugal force and rub against the inner wall of the fixed mounting jacket (22). The planetary gear mechanism (233) is located behind the centrifugal slide (231). The centrifugal slide (231) is mounted on the central gear of the planetary gear mechanism (233). The steel rope winding winch (2) is coaxially mounted on the gear ring of the planetary gear mechanism (233). The planetary gear mechanism (233) is used to accelerate the rotational speed of the centrifugal friction deceleration device (23).

5. A reciprocating disaster rescue device according to claim 1, characterized in that: The aforementioned automatic braking system based on human body weight (41) includes: The fixed rope pressing block (411) is located in the lower part of the first escape basket (4) and the second escape basket (5), and a rotating cylindrical pressing block is provided at the upper end of the fixed rope pressing block (411); The movable rope pressing block (412) is movably set above the fixed rope pressing block (411). The lower end of the movable rope pressing block (412) is provided with a rotating cylindrical pressing block. The cylindrical pressing blocks on the fixed rope pressing block (411) and the cylindrical pressing blocks on the movable rope pressing block are staggered and correspond to each other, which are used to tighten or loosen the steel rope (3). The rocker arm pressure block (413) is hinged above the movable rope pressure block (412), and the movable rope pressure block (412) is hinged in the middle of the rocker arm pressure block (413) for pressing down the movable rope pressure block (412). The shift fork gear (414) is located next to the rocker arm pressure block (413). The upper part of the rocker arm pressure block (413) is engaged in the shift fork of the shift fork gear (414) and is used to move the rocker arm pressure block (413) up and down. The gear (415) at the root of the handle meshes with the gear (414) at the fork. The shaft of the gear (415) at the root of the handle is connected to one end of the handle (42), and the other two ends of the handle (42) extend out of the outside of the first escape basket (4) and the second escape basket (5). The rope-pressing block reset spring (416) has its first end fixedly mounted on the escape basket shell above the rocker arm pressing block (413), and its second end connected to the rocker arm pressing block (413) for pulling the rocker arm pressing block (413) to reset.

6. A reciprocating disaster rescue device according to claim 5, characterized in that: The upper end of the rocker arm pressure block (413) is connected to a safety rope sling (6). The safety rope sling (6) passes through the lower end of the first escape basket (4) and the second escape basket (5). The safety rope sling (6) is used to connect the safety rope (61). During the descent of the first escape basket (4) or the second escape basket (5), the weight of the person escaping pulls the rocker arm block (413) down through the safety rope ring (6) to form a self-locking mechanism. The transmission ratio between the root gear (415) of the handle and the shift fork gear (414) is less than 1.

7. A reciprocating disaster rescue device according to claim 1, characterized in that: The human body weight automatic braking system (41) is provided with two fixed pulleys (43) on each side. 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 to counteract the torque generated when the steel rope (3) is running.

8. A reciprocating disaster rescue device according to claim 1, characterized in that: The mounting bracket (1) is equipped with a steel rope tightening device (11) for tightening the steel rope (3) wound on the steel rope winding winch (2). The steel rope tightening device (11) includes a tightening positioning block (111), a tightening telescopic rod (112), a tightening block (113), and a return spring (114). The tightening positioning block (111) is mounted on the mounting bracket (1), the tightening telescopic rod (112) is movably mounted on the tightening positioning block (111), the tightening block (113) is mounted on the lower end of the tightening telescopic rod (112), and the lower end of the tightening block (113) is in contact with the steel rope (3) on the steel rope winding winch (2). The return spring (114) is coaxially mounted 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 cable steering wheel (24) is coaxially mounted on the central gear shaft of the planetary gear mechanism (233), and a steel cable tightening roller (241) is provided below the steel cable steering wheel (24); The first escape basket (4) and the second escape basket (5) are each provided with a handle (7), and the two handles (7) are respectively located in the middle of the first escape basket (4) and the second escape basket (5).

10. A reciprocating disaster rescue device according to any one of claims 1 or 2, characterized in that: The contact surface between the fixed mounting sleeve (22) and the brake block (232) is a rough surface. The inner wall of the fixed mounting sleeve (22) and the arc surface of the brake block (232) in contact with the fixed mounting sleeve (22) are provided with cylindrical external teeth, straight knurling, or mesh knurling. The contact surface between the fixed mounting 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 that mesh with the cylindrical teeth of the fixed mounting sleeve (22). The height of the cylindrical external teeth or straight knurled teeth on the arc surface of the inner wall of the fixed mounting sleeve (22) and the brake block (232) in contact with the fixed mounting sleeve (22) does not exceed 0.5 mm.

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