Reciprocating disaster relief device

Abstract

The present invention discloses a reciprocating disaster life-saving device including a mounting hanger (1) attached at a high place and a steel rope winding / reeling winch (2) below the mounting hanger, and two escape gondolas for up-down and down-climbing escape are connected below the steel rope winding / reeling winch via a steel rope (3), the steel rope winding / reeling winch is provided with a floor height positioning device (21), a centrifugal friction reduction device (23) is coaxially provided inside the steel rope winding / reeling winch, an automatic human body weight braking system (41) is provided inside the escape gondola, and the steel rope inside the escape gondola is equipped with the automatic human body weight braking system. In this invention, two escape gondolas move up and down alternately to realize reciprocating self-rescue and mutual rescue escape, different floor heights are positioned by a floor height positioning device, deceleration is controlled by a triple labor-saving mechanism of a centrifugal friction deceleration device and a human body weight automatic braking system, and the human body weight automatic braking system is braked in an emergency by the weight of the escaping person himself to form a self-lock, ensuring the life safety of the escaping person at the same time as the emergency escape.

Description

[Technical Field]

[0001] The present invention relates to the technical field of life-saving equipment, which is applicable 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 particularly to a reciprocating disaster life-saving device. [Background technology]

[0002] With the development of urban modernization, the number of high-rise buildings is increasing year by year, improving land utilization rates. However, this also increases the difficulty of rescue and evacuation in high-rise buildings during disasters such as fires and earthquakes. Fire prevention and firefighting in high-rise buildings has always been one of the major challenges in fire safety. First, high-rise buildings have many vertical hoistways, such as stairwells, elevator shafts, pipe shafts, air ducts, and cable shafts. If fire compartments are not properly managed, each will resemble a towering chimney in the event of a fire, easily creating a "chimney effect" and providing a route for the rapid spread of fire. Second, high-rise buildings have many floors and long vertical distances, which makes it time-consuming to evacuate from the stairwells to the ground or other safe places, which is unfavorable for personnel evacuation. Third, if a fire breaks out in a high-rise building, it is very difficult to extinguish it from the outside, which makes it unfavorable for rapid rescue efforts. Therefore, self-rescue is generally the norm, that is, people mainly rely on indoor firefighting facilities. Therefore, it is also necessary for high-rise buildings to install life-saving firefighting equipment to ensure the life safety of personnel in high-rise buildings.

[0003] Conventional high-rise building escape equipment generally uses electric or mechanical rope-descent escape systems. Fires in buildings are often caused by short circuits in the electrical circuit or by improper use of fire by humans. When a fire caused by a short circuit or an open flame reaches the electrical circuit, it trips the electrical circuit switch, making electrically controlled elevating escape devices highly susceptible to being affected by the electrical circuit and becoming unusable. On the other hand, rechargeable electric elevating escape devices require sufficient power supply to be prepared in advance. Disasters such as fires and earthquakes occur suddenly, and without power, the escape device cannot be used. Therefore, purely mechanical escape devices are more suitable for escape rescue in high-rise buildings.

[0004] In conventional mechanical escape devices, the commonly used rope descent equipment is difficult to operate and may require the cooperation of multiple people to complete the rope descent escape, which is disadvantageous for emergency evacuation or self-rescue of personnel in high-rise buildings. For example, in patent application number 201710732631.6, published as a Chinese invention patent, when used, the device is placed in the appropriate escape position, secured in a safe position with a fixing buckle, the safety belt is passed under the armpits and adjusted to the tightness, the rope drum is then thrown horizontally to the ground, the figure-eight ring descender is inserted into the steel wire rope at the desired descent position and connected to the safety belt, the figure-eight ring descender is then controlled to slowly fall to the ground, and the safety belt is finally untied and the person leaves the danger zone. The invention patent requires the cooperation of several people to slowly lower the steel rope on the ground, making the operation very difficult. In addition, the deceleration effect of the figure-eight ring descender is often controlled manually, and the rope descender cannot operate it unless he has a certain level of knowledge about rope descent operations. Furthermore, if the people below do not cooperate properly, the rope descender may fall and be injured or even lose his life.

[0005] When a fire breaks out, trapped personnel are likely to experience psychological states of fear, panic, tension, etc. during the process of descending and escaping. In such a psychological state, it is difficult for the escaping personnel to concentrate on operating the escape device, which requires complex operations. If the escape device does not have an automatic deceleration or emergency braking self-locking function, the escaping personnel will likely fall at high speed, which could result in serious physical injury or even loss of life.

[0006] Therefore, it is necessary to design a high-rise building escape device suitable for ordinary people who do not have the knowledge and practical ability to descend a rope. Summary of the Invention [Problem to be solved by the invention]

[0007] The problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a reciprocating self-rescue and mutual rescue escape device for high-rise buildings, which is easy to operate, highly safe, has a good deceleration effect, has a self-locking function in an emergency, and can rescue trapped personnel without limit. [Means for solving the problem]

[0008] The present invention is realized in the following technical aspects. The reciprocating disaster life-saving device includes a mounting hanger (1) attached to a high-rise building, and a steel rope winding / reeling winch (2) is provided below the mounting hanger (1). Below the steel rope winding / reeling winch (2), a first escape gondola (4) and a second escape gondola (5) for ascending and descending are connected via a steel rope (3). The steel rope winding / releasing winch (2) is provided with a floor height positioning device (21) for adjusting and positioning the winding / releasing length of the steel rope (3), A fixed mounting jacket (22) is fixedly installed below the mounting hanger (1), and a steel rope winding / reeling winch (2) is movably installed coaxially on the fixed mounting jacket (22). A centrifugal friction reduction device (23) is installed inside the fixed mounting jacket (22). The centrifugal friction reduction device (23) is rotated by the winding / reeling of the steel rope (3). The centrifugal friction reduction device (23) rubs against the inner wall of the fixed mounting jacket (22) due to the centrifugal force generated by the rotation, thereby reducing the winding / reeling speed of the steel rope (3). The first escape gondola (4) and the second escape gondola (5) are provided with an automatic human body weight braking system (41), and the steel ropes (3) in the first escape gondola (4) and the second escape gondola (5) are provided with the automatic human body weight braking system (41), and the automatic human body weight braking system (41) is connected to an attachment end of a handle (42), and the gripping end of the handle (42) protrudes outside the escape gondola and is used for automatically braking when an escaping person hangs from the automatic human body weight braking system (41) via a safety rope (61) and gets on the escape gondola to escape, and the handle (42) is used to control the descent speed of the first escape gondola (4) and the second escape gondola (5) on the steel rope (3), and when the handle (42) is not pulled down, the gondola (4) is locked by the weight of the person and will not slip down, The first escape gondola (4) and the second escape gondola (5) are each suspended by a steel rope (3) folded in half, forming a load support with a double steel rope (3), and the first escape gondola (4) and the second escape gondola (5) move up and down alternately to escape.

[0009] Furthermore, the first end of the steel rope (3) is fixed to the mounting hanger (1), and the second end of the steel rope (3) is inserted from above the second escape gondola (5), passes through the automatic human body weight braking system (41) in the second escape gondola (5), and then protrudes from above the second escape gondola (5). A steel rope direction changing disc (24) is provided in the steel rope winding / releasing winch (2). The steel rope (3) protruding from above the second escape gondola (5) is then redirected by the steel rope direction changing disc (24) before being inserted from above the first escape gondola (4), passes through the automatic human body weight braking system (41) in the first escape gondola (4), and then protrudes from above the first escape gondola (4). The protruding steel rope (3) is wound around the winch of the steel rope winding / releasing winch (2).

[0010] Furthermore, the floor height positioning device (21) a positioning hole (211) provided around the steel rope winding / releasing winch (2); and a positioning pin (212) attached to the mounting plate below the mounting hanger (1) and whose position is adapted to the position of the positioning hole (211).

[0011] Furthermore, a clearance having a 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.

[0012] Furthermore, the centrifugal friction reduction device (23) a centrifugal slide groove (231) provided radially inside the fixed mounting jacket (22); Two brake blocks (232) are slidably set in the centrifugal slide groove (231), and when the centrifugal slide groove (231) rotates, the brake blocks (232) are swung outward by centrifugal force and rub against the inner wall of the fixed mounting jacket (22); The planetary gear mechanism (233) is provided behind the centrifugal slide groove (231) for accelerating the rotational speed of the centrifugal friction reduction device (23), and includes a planetary gear mechanism (233) in which the centrifugal slide groove (231) is attached to a central gear of the planetary gear mechanism (233), and a steel rope winding / releasing winch (2) is provided coaxially with a ring gear of the planetary gear mechanism (233).

[0013] Furthermore, the human body weight automatic braking system (41) a fixed rope holding block (411) provided at a lower position in the first escape gondola (4) and the second escape gondola (5), the fixed rope holding block (411) having a rotating cylindrical holding block provided at its upper end; a movable rope pressing block (412) for pressing or loosening the steel rope (3), which is movably provided above the fixed rope pressing block (411), and has a rotating cylindrical pressing block at its lower end, and the cylindrical pressing block on the fixed rope pressing block (411) and the cylindrical pressing block on the movable rope pressing block (412) correspond to each other in a staggered manner; a rocker arm pressing block (413) for pressing down the movable rope pressing block (412), the rocker arm pressing block (413) being hingedly connected above the movable rope pressing block (412), the movable rope pressing block (412) being hingedly connected to its central portion; a toggle fork gear (414) for toggling the rocker arm pressing block (413) up and down, the toggle fork gear (414) being provided beside the rocker arm pressing block (413), with the upper part of the rocker arm pressing block (413) engaged within the toggle fork; a handle root gear (415) that meshes with the teeth of the toggle fork gear (414), the shaft of which is connected to one end of the handle (42), and the other two ends of the handle (42) that extend outside the first escape gondola (4) and the second escape gondola (5); and a rope pressing block return spring (416) for pulling and returning the rocker arm pressing block (413), the first end of which is fixed to the escape gondola housing above the rocker arm pressing block (413) and the second end of which is connected to the rocker arm pressing block (413).

[0014] Furthermore, a safety rope ring (6) is connected to the upper end of the rocker arm holding block (413), and the safety rope ring (6) protrudes from the lower ends of the first escape gondola (4) and the second escape gondola (5). The safety rope ring (6) is for connecting a safety rope (61). During the descent of the first escape gondola (4) or the second escape gondola (5), the rocker arm restraining block (413) is pulled and pushed down by the weight of the escapee via the safety rope hanging loop (6), forming a self-lock.

[0015] Furthermore, the transmission ratio between the handle root gear (415) and the toggle fork gear (414) is less than one.

[0016] Furthermore, two fixed pulleys (43) are provided on each side 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 both the left and right sides of the human body weight automatic braking system (41) moves in opposite directions to counteract the torsional force generated when the steel rope (3) is running.

[0017] Furthermore, the mounting hanger (1) is provided with a steel rope tightening device (11) for tightening the steel rope (3) wound around the steel rope winding / releasing 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 provided on the mounting hanger (1), the tightening telescopic rod (112) is movably provided on the tightening positioning block (111), the tightening block (113) is provided 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 / releasing winch (2), and the return spring (114) is provided coaxially with the tightening telescopic rod (112).

[0018] Furthermore, the steel rope direction-changing disk (24) is provided coaxially with the central gear shaft of the planetary gear mechanism (233), and a steel rope tightening roller (241) is provided below the steel rope direction-changing disk (24).

[0019] Furthermore, the housings of the first escape gondola (4) and the second escape gondola (5) are each provided with one grip (7), and the two grips (7) are provided in the center of the first escape gondola (4) and the second escape gondola (5), respectively.

[0020] Furthermore, the contact surface between the fixed mounting jacket (22) and the brake block (232) is rough, and the inner wall of the fixed mounting jacket (22) and the arcuate surface of the brake block (232) that contacts the fixed mounting jacket (22) are provided with cylindrical external teeth, flat knurling, or cross knurling. a contact surface of the fixed mounting jacket (22) with a ring gear of the planetary gear mechanism (233) is provided with cylindrical internal teeth, and an outer surface of the ring gear of the planetary gear mechanism (233) is provided with cylindrical external teeth that mesh with the cylindrical teeth of the fixed mounting jacket (22); The tooth height of the cylindrical external teeth or flat knurling on the arcuate surface of the brake block (232) that contacts the inner wall of the fixed mounting jacket (22) and the fixed mounting jacket (22) is 0.5 mm or less.

[0021] The operating principle of the present invention is as follows. In the first escape gondola (4) and the second escape gondola (5) of the present invention, one steel rope (3) is folded and pulled against each other to be wound and paid out. When the first trapped person descends and escapes, one section of the steel rope (3) wound around the steel rope winding and paying out winch (2) is used as the release rope, and one section of the steel rope (3) connected to the steel rope direction changing disc (24) is used as the fixed rope. After the first trapped person descends and escapes, the one section of the steel rope (3) connected to the steel rope winding and paying out winch (2) is used as the fixed rope. The steel rope (3) and the single-stage steel rope (3) connected to the fixed ring of the mounting hanger (1) are respectively used as fixed ropes for the first escape gondola (4) and the second escape gondola (5), and the single-stage steel rope (3) that suspends the first escape gondola (4) and the second escape gondola (5) by the steel rope direction changing disc (24) is used as a winding and reeling rope when ascending and descending, and the first escape gondola (4) and the second escape gondola (5) are alternately ascended and descended in a reciprocating manner by winding and reeling out the winding and reeling rope, thereby realizing reciprocating self-rescue and mutual rescue escape. The steel rope winding / releasing winch (2) rotates to release the steel rope, and after the first trapped evacuee has descended and escaped, the actual released length of the steel rope (3) can be determined. The operator can limit the maximum length of the steel rope (3) that can be released by rotating the steel rope winding / releasing winch (2) by inserting the positioning pin (212) of the floor height positioning device (21) into the positioning hole (211) on the steel rope winding / releasing winch (21). This prevents the actual released length of the steel rope (3) from becoming too long, which could cause the escape gondola to fall to the ground and cause secondary casualties. After completing the rescue operation, the operator pulls out the positioning pin (212) to return the device to its original position for the next use.

[0022] According to the above-mentioned structure of the device, the first trapped person can obtain the actual release length of the steel rope (3) each time, and it is applicable to rescue at different floor heights.

[0023] The centrifugal friction deceleration device (23) uses the descent speed of the escape gondolas (4, 5) to rotate the steel rope deflection disc (24), which in turn rotates the coaxially connected centrifugal slide groove (231). The centrifugal force generated by the rotation of the centrifugal slide groove (231) swings two brake blocks (232) outward, and the brake blocks (232) friction with the inner wall of the fixed mounting jacket (22), thereby achieving braking and deceleration. The faster the descent speed of the escape gondolas (4, 5), the greater the centrifugal force swinging the two brake blocks (232) outward, and the greater the friction between the brake blocks (232) and the inner wall of the fixed mounting jacket (22), resulting in a safer descent.

[0024] In the automatic human body weight braking system (41), the rocker arm holding block (413) is pulled and pressed down by the weight of the escaping person, and the rocker arm holding block (413) is pressed down, which in turn presses down the movable rope holding block (412), pressing the steel rope (3) between the movable rope holding block (412) and the fixed rope holding block (411), thereby realizing self-locking. The long handle (42) is used to rotate the handle root gear (415), and the small gear of the handle root gear (415) drives the large gear of the toggle fork gear (414), which then turns the toggle. The rocker arm holding block (413) is toggled by the toggle fork on the fork gear (414), and multiple labor-saving measures are achieved by combining the principle of leverage and gear reduction. The rocker arm holding block (413) is toggled and moves up to lift its own weight. At the same time, the rocker arm holding block (413) pulls and moves up the movable rope holding block (412), changing the pressing force on the steel rope (3) by the fixed rope holding block (411) and the movable rope holding block (412). This allows the escape personnel to manually and autonomously control the descent speed of the escape gondola.

[0025] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the movable rope holding block (412) is controlled so that it automatically presses against the steel rope (3) due to the weight of the human body, forming a self-lock and causing emergency braking, which prevents the escapee from panicking and being unable to operate the handle, causing the fixed rope holding block (411) and the movable rope holding block (412) that press against the steel rope (3) to loosen and not be able to slow down, which in turn accelerates the descent speed of the escape gondola and causes damage to the lives and safety of the escapee. In the present invention, a triple labor-saving moment arm is formed by utilizing the lever provided by the rocker arm holding block (413), the small gear at the base of the handle that moves the large gear of the toggle fork, and the lever provided by the handle (42). By combining the principle of leverage with a gear reduction mechanism, a greater brake engagement force can be obtained. The minimum pulling force required by the escaper to pull the handle is less than 2% of the escaper's body weight, significantly reducing the force required by the escaper to pull the handle (42). Even elderly people and children can easily pull the handle (42). As a result, the escaper can more easily control the descent speed of the escape gondola, and the stroke of the brake engagement mechanism is increased, making the descent more powerful. In the centrifugal friction deceleration device (23) of the present invention, the brake block (232) is swung outward by centrifugal force, causing friction with the inner wall of the fixed mounting jacket (22), thereby automatically slowing down the escape gondola as it descends.The increased friction force reduces the descent speed of the escape gondola, and the faster the speed of the escape gondola, the greater the centrifugal force that swings the brake block (232) outward, and the better the braking effect, so the friction deceleration automatically adapts to the descent speed of the escape gondola.

[0026] In this invention, the deceleration is automatically controlled by the centrifugal friction deceleration device (23), and the descent speed is manually controlled by the handle (42). By combining automatic deceleration and manual control, double deceleration is realized when the escape gondola descends, and the descent speed can be controlled within 2 meters per second. The descent speed complies with international standards, and the impact force at the time of landing is prevented from becoming too large and causing injury to the legs of the escapees, thereby ensuring the life safety of the escapees. In the present invention, by positioning the floor height using the floor height positioning device (21), the accuracy of controlling the winding and unwinding length of the steel rope (3) is improved, and different unwinding lengths of the steel rope (3) can be set by positioning the floor height positioning device (21), which is suitable for rescue operations at different floor heights. In addition, by positioning the positioning pin (212) in the floor height positioning device (21), a clearance length of 1 to 1.5 meters is maintained between the released length of the steel rope (3) during the first descent of the escaping person and the lowest floor, which prevents the escaping person from hitting the ground directly and suffering secondary injury if the device becomes uncontrollable.

[0027] The present invention has a simple structure, small volume, and is easy to store and carry. The reciprocating structure of the escape method saves the time (or half the time) required to lift the escape device, and allows trapped personnel to be rescued multiple times, one on each side, achieving a fast, efficient, safe, and autonomous escape. [Brief explanation of the drawings]

[0028] [Figure 1] FIG. 2 is a schematic diagram of a perspective structure of the present invention. [Figure 2] FIG. 1 is a wire layout diagram of the steel rope of the present invention. [Figure 3] 1 is a schematic diagram of the internal oblique structure of the steel rope winding / paying winch of the present invention. [Figure 4] 1 is a schematic diagram of a perspective structure of the steel rope tightening device of the present invention pressing the steel rope. [Figure 5] FIG. 1 is a front view of a steel rope winding / paying winch according to the present invention. [Figure 6] FIG. 6 is a cross-sectional view of the present invention taken along the line AA in FIG. 5. [Figure 7] FIG. 2 is an oblique view of the internal structure of the first escape gondola and the second escape gondola of the present invention. [Figure 8] FIG. 3 is a partial enlarged view of a portion B in FIG. 2 according to the present invention. [Figure 9] 1 is a perspective schematic diagram of a power-saving mechanism in the automatic human body weight braking system of the present invention. FIG. [Figure 10] FIG. 10 is a diagram showing the state of use of the present invention when escaping. [Figure 11] FIG. 10 is a partial enlarged view of a portion A in FIG. 9 according to the present invention. [Figure 12] FIG. 2 is a front view of the second structure of the centrifugal friction decelerator of the present invention. [Figure 13] 1 is a perspective view of the structure of the foldable mounting hanger of the present invention; FIG. DETAILED DESCRIPTION OF THE INVENTION

[0029] In order to enable those skilled in the art to better understand the technical aspects of the present invention, specific embodiments thereof will be described in detail below with reference to the accompanying drawings.

[0030] Example 1: As shown in Figures 1 to 11, the reciprocating disaster life-saving device includes a mounting hanger 1 attached to a high-rise building, and a steel rope winding / reeling winch 2 is provided below the mounting hanger 1, and a first escape gondola 4 and a second escape gondola 5 for vertical evacuation are connected below the steel rope winding / reeling winch 2 via a steel rope 3, and the steel rope winding / reeling winch 2 is provided with a floor height positioning device 21, and the steel rope winding / reeling winch 2 is movably provided coaxially in a fixed mounting jacket 22, and is located inside the fixed mounting jacket 22. is provided with a centrifugal friction deceleration device 23, and a human body weight automatic braking system 41 is provided in the first escape gondola 4 and the second escape gondola 5, and the steel rope 3 in the first escape gondola 4 and the second escape gondola 5 is provided with the human body weight automatic braking system 41, which is connected to the mounting end of the handle 42, and the gripping end of the handle 42 protrudes outside the first escape gondola 4 and the second escape gondola 5, and when the steel rope winding / releasing winch 2 rotates, the first escape gondola 4 and the second escape gondola 5 move up and down alternately.

[0031] 3, 4 and 6, the floor height positioning device 21 includes positioning holes 211 and positioning pins 212, several positioning holes 211 are arranged around the steel rope winding / releasing winch 2, the positioning pins 212 are attached to the mounting plate below the mounting hanger 1, and the positions of the positioning pins 212 are matched to the positions of the positioning holes 211, after the first trapped person has escaped using the first escape gondola 4, the steel rope 3 is pulled to a length suitable for the height of the escape floor, and other trapped people in the high-rise building can position the length of the steel rope 3 to be pulled out from the steel rope winding / releasing winch 2 according to the height to which the first trapped person has descended, and the steel rope winding / releasing winch 2 can set different pull-out lengths of the steel rope 3 through the positioning of the floor height positioning device 21, so that it is suitable for rescue at different floor heights.

[0032] In the embodiment, a clearance 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 lowest floor, which prevents the risk of the human body hitting the bottom directly when the mechanism of the present invention becomes uncontrollable, and ensures the safety of trapped personnel when they escape.

[0033] In the embodiment, as shown in Figures 3 and 6, the centrifugal friction reduction device 23 is used to reduce the winding / reeling speed of the steel rope 3, and includes a centrifugal slide groove 231 provided radially inside the steel rope winding / reeling winch 2, and two brake blocks 232 are slidably set inside the centrifugal slide groove 231, and a planetary gear mechanism 233 is provided behind the centrifugal slide groove 231, and the centrifugal slide groove 231 is coaxially fixed to the central gear of the planetary gear mechanism 233, and the ring gear of the planetary gear mechanism 233 is coaxially fixed to the inner wall of the fixed mounting jacket 22.

[0034] In this embodiment, as shown in FIG. 6, a steel rope direction-changing disk 24 is provided at the end of the central gear shaft of the planetary gear mechanism 233. The steel rope 3 between the first escape gondola 4 and the second escape gondola 5 is provided in the groove of the steel rope direction-changing disk 24. When one of the escape gondolas moves downward, the steel rope 3 rotates the steel rope direction-changing disk 24, thereby rotating the central gear of the coaxially fixed planetary gear mechanism 233. When the central gear of the planetary gear mechanism 233 rotates, the two brake blocks 232 in the centrifugal slide groove 231 are swung outward by centrifugal force and rub against the inner wall of the fixed mounting jacket 22. The increased friction reduces the rotation speed of the central gear of the planetary gear mechanism 233 and the steel rope direction-changing disk 24, thereby reducing the moving speed of the steel rope 3 and thereby reducing the descending speed of the first escape gondola 4 and the second escape gondola 5, thereby realizing automatic deceleration of the escape gondolas when descending.

[0035] In the embodiment, the greater the descent speed of the first escape gondola 4 or the second escape gondola 5, the greater the rotation speed of the steel rope deflection disc 24 and the centrifugal slide groove 231 caused by the steel rope 3, and the greater the centrifugal force that swings the brake block 232 outward. As a result, the frictional force between the brake block 232 and the inner wall of the fixed mounting jacket 22 is increased, and the frictional force generated by the friction also has a good effect of braking the rotation of the central gear shaft of the planetary gear mechanism 233. Therefore, the descent speed of the first escape gondola 4 and the second escape gondola 5 is proportional to the frictional force caused by the braking of the brake block 232, and the centrifugal friction reduction device 23 can automatically adapt to the descent speed of the first escape gondola 4 or the second escape gondola 5 to reduce the friction.

[0036] In the 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 multiple planetary gears rotate around the central gear. The planetary gear mechanism 233 positions the central gear shaft center and accelerates the rotational speed of the centrifugal friction reducer 23, thereby improving the braking effect.

[0037] In this embodiment, as shown in Figures 2 and 6, a steel rope tightening roller 241 is provided below the steel rope direction-changing disc 24. The steel rope tightening roller 241 increases the frictional force between the steel rope 3 and the steel rope direction-changing disc 24, and prevents the steel rope 3 from slipping on the steel rope direction-changing disc 24, which may slow down the rotation speed of the central gear of the planetary gear mechanism 233 and the centrifugal slide groove 231 or even stop rotating, thereby reducing the effect of the centrifugal friction speed reducer 23 in slowing down the winding / releasing speed of the steel rope 3 and affecting the safety of the escaping personnel.

[0038] In the embodiment, as shown in Figures 1 and 2, the first end of the steel rope 3 is moored and fixed to a fixed ring on the left side of the mounting hanger 1, the second end of the steel rope 3 is inserted from above the second escape gondola 5, passes through the automatic human body weight braking system 41 in the second escape gondola 5, and then protrudes from above the second escape gondola 5, the steel rope 3 protruding from above the second escape gondola 5 after being deflected by the steel rope deflection disc 24, is inserted from above the first escape gondola 4, passes through the automatic human body weight braking system 41 in the first escape gondola 4, and then protrudes from above the first escape gondola 4, and the protruding steel rope 3 is wound around the winch of the steel rope winding / releasing winch 2.

[0039] In the embodiment, as shown in Figures 1, 2 and 10, the first escape gondola 4 and the second escape gondola 5 are each suspended by a steel rope 3 folded in half, forming a load-bearing structure with double steel ropes 3, which is fireproof and has a strong load-bearing capacity. This solves the problem that with a single steel rope 3, the pre-tightening becomes ineffective due to the torsional force during operation, causing the steel rope 3 to loosen.

[0040] In an embodiment, as shown in Figures 1, 2 and 10, the first escape gondola 4 and the second escape gondola 5 are in the same position when not in use, and the first escape gondola 4 and the second escape gondola 5 can be moved up and down alternately when in use. When the first trapped person uses the first escape gondola 4 to escape, the second escape gondola 5 remains stationary. When the first trapped person reaches the ground, the first escape gondola 4 is located at the bottom floor, and the second escape gondola 5 is located at its initial position in the high-rise building. When the second trapped person uses the second escape gondola 5 located at the top floor, the first escape gondola 4 remains stationary. At the same time that the first escape gondola 4 is pulled upward by the descending second escape gondola 5, when the second trapped person reaches the ground, the rising first escape gondola 4 reaches the window of the escape floor in the high-rise building, and the third trapped person can then use the first escape gondola 4 to descend and escape. In this way, the first escape gondola 4 and the second escape gondola 5 can alternately rise and fall, allowing an unlimited number of trapped persons to be rescued, saving the ascent time of the escape device and achieving a fast, efficient, safe and autonomous escape.

[0041] In an embodiment, as shown in Figures 7 and 9, the human body weight automatic braking system 41 includes a fixed rope holding block 411 arranged at a lower position in the first escape gondola 4 and the second escape gondola 5, and a movable rope holding block 412 is movably arranged above the fixed rope holding block 411, and the rocker arm holding block 413 is hingedly connected to the escape gondola housing above the movable rope holding block 412, and the movable rope holding block 412 is hingedly connected to the middle of the rocker arm holding block 413, and a toggle fork gear 414 is arranged next to the rocker arm holding block 413, and the upper part of the rocker arm holding block 413 is engaged in the toggle fork of the toggle fork gear 414, and a handle root gear 415 is meshed with the toggle fork gear 414, and one end of the handle 42 is coaxially connected to the axis of the handle root gear 415, and the other end of the handle 42 extends outside the first escape gondola 4 and the second escape gondola 5.

[0042] In the embodiment, as shown in Figures 7 and 8, a fixed columnar pressing block is provided at the upper end of the fixed rope pressing block 411, and a movable columnar pressing block is provided at the lower end of the movable rope pressing block 412. The fixed columnar pressing blocks on the fixed rope pressing block 411 and the movable columnar pressing blocks on the movable rope pressing block 412 correspond to each other in a staggered manner, and the columnar pressing blocks are used to press or release the steel rope 3 during the descent of the first escape gondola 4 and the second escape gondola 5, thereby reducing the descent speed of the first escape gondola 4 and the second escape gondola 5.

[0043] In the embodiment, as shown in Figures 7 and 8, the fixed columnar pressing block and the movable columnar pressing block are cylindrical with arc-shaped surfaces. When the steel rope 3 is pressed by the fixed columnar pressing block and the movable columnar pressing block, there is a transition due to the arc-shaped surfaces. Therefore, the angle of the corners will cause friction damage to the steel rope 3, and the steel rope 3 may break if it runs at the angle of the corners for a long time, which will prevent an impact on the lives and safety of the escaping personnel.

[0044] In the embodiment, as shown in FIG. 7, a rope pressing block return spring 416 is provided above the fixed rope pressing block 411. The rope pressing block return spring 416 pulls the fixed rope pressing block 411 to return it upward, and returns the handle 42 downward via the rocker arm pressing block 413, toggle fork gear 414 and handle root gear 415, thereby preventing the steel rope 3 from being pressed by the movable rope pressing block 412 during the ascent of the first escape gondola 4 or the second escape gondola 5, making it impossible to wind and unwind the steel rope 3.

[0045] 7 and 9, in this embodiment, a safety rope ring 6 is connected to the upper end of the rocker arm holding block 413, and the safety rope ring 6 protrudes from the lower ends of the first escape gondola 4 and the second escape gondola 5. The safety rope ring 6 is used to connect a safety rope 61, and the safety rope 61 is used to secure the body of the escapee. During the descent of the escape gondola 4, the rocker arm holding block 413 is pulled and pushed down via the safety rope ring 6 by the escapee's own weight, which in turn pushes down the movable rope holding block 412, pressing the steel rope 3 between the fixed rope holding block 411 and the movable rope holding block 412, forming a self-lock. This causes the escapee to panic and be unable to control the descent of the handle 42. As a result, the fixed rope holding block 411 and the movable rope holding block 412 cannot decelerate the pressure, and the descent speed of the escape gondola 4 becomes too fast, which would endanger the lives and safety of the escapee.

[0046] In this embodiment, during the descent of the first escape gondola 4 or the second escape gondola 5, the escape personnel controls the descent speed by pulling down the handle 42. When the handle 42 is pulled down, the handle root gear 415 rotates counterclockwise, causing the toggle fork gear 414 to rotate clockwise. The toggle fork on the toggle fork gear 414 toggles the rocker arm holding block 413 upward, causing the movable rope holding block 412 to move upward and release the steel rope 3. This allows the escape gondola 4 to slide down on the steel rope 3. By controlling the angle at which the handle 42 is pulled down, the magnitude of the frictional force between the fixed rope holding block 411, the movable rope holding block 412 and the steel rope 3 can be controlled, and the descent speed of the escape gondola on the steel rope 3 can be controlled.

[0047] In this embodiment, the transmission ratio between the handle root gear 415 and the toggle fork gear 414 is less than 1, and the small gear of the handle root gear 415 drives the large gear of the toggle fork gear 414 to form a labor-saving mechanism, thereby reducing the force with which the evacuation personnel pull down the handle 42 and easing the difficulty with which the evacuation personnel pull the handle 42.

[0048] In this embodiment, as shown in FIG. 9, the automatic human body weight braking system 41 is provided with a triple labor-saving moment arm, the lever formed by the length of the handle 42 is the first labor-saving moment arm, the movement of the large gear of the toggle fork gear 414 by the small gear of the handle base gear 415 is the second labor-saving moment arm, and the distance from the mounting hinge connecting shaft of the rocker arm holding block 413 to the toggle fork of the toggle fork gear 414 forms a third labor-saving moment arm. The triple labor-saving moment arm greatly reduces the force with which the escaping person pulls down the handle 42, allowing the escaping person to easily pull their own weight, and as a result, the descent speed of the escape gondola 4 is more effectively controlled.

[0049] In this embodiment, the triple energy-saving moment arm in the automatic human body weight braking system 41 is as follows, taking an escape person weighing 100 kg as an example, without considering transmission loss: The resistance arm L1 of the third-weight labor-saving moment arm is the distance from the connection point between the safety rope hanging ring 6 and the rocker arm holding block 413 to the hinge connection axis between the rocker arm holding block 413 and the movable rope holding block 412, and the design dimension of the resistance arm L1 is approximately 35 mm. The power arm L2 is the distance from the contact point between the toggle fork of the toggle fork gear 414 and the rocker arm holding block 413 to the hinge connection axis of the rocker arm holding block 413, and the design dimension of the power arm L2 is approximately 46 mm. The resistance F1 is the weight of the escaping person, 1000 N. According to the moment arm calculation formula, Resistance x resistance arm = power x power arm, That is, L1×F1=L2×F2, 0.035m×1000N=0.046m×F2, F2≒760.87N, Within the second power-saving moment arm, gears are used for transmission, and the torque ratio is 1 / transmission ratio. The pitch diameter of the toggle fork gear 414 is 34 mm, and the pitch 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 moment arm calculation formula, torque = circumferential force × moment arm. When the gears mesh and rotate, the torque and circumferential force are equal, so the torque ratio is the moment arm ratio. Resistance x resistance arm = power x power arm, That is, L3×F3=L4×F4, 16×760.87N=34×F4, F4≒358N, The resistance arm L5 of the first weight labor-saving moment arm is the pitch radius of the handle root gear 415, and the design dimension of the pitch radius of the handle root gear 415 is about 8 mm. The power arm L6 is the length of the handle 42, and the design dimension of the power arm L6 is about 160 mm. The resistance F5=F4, and the power F6 is the pulling force on the handle 42 by the escaping personnel. According to the moment arm calculation formula, Resistance x resistance arm = power x power arm, That is, L5×F5=L6×F6, 8×358N=160×F6, F6=17.9N. Therefore, without taking transmission losses into consideration, the minimum pulling force that a single escaper weighing 100 kg needs to apply to the handle 42 is 17.9 N, or 1.79 kg, which is only 1.79% of the escaper's weight. The transmission of the triple labor-saving moment arm mechanism not only saves effort when an adult pulls the handle 42, but also allows even the elderly and children to pull the handle 42 with ease, making it suitable for people of various weights and constitutions and highly applicable.

[0050] In the embodiment, as shown in Figures 2 and 8, two fixed pulleys 43 are provided on each side of the automatic human body weight braking system 41 in the first escape gondola 4 or the second escape gondola 5. 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 torsional force is generated. The steel ropes 3 on the fixed pulleys 43 on both sides of the automatic human body weight braking system 41 move in opposite directions, and the circumferential torsional forces generated by the steel ropes 3 on the fixed pulleys 43 on both sides are also opposite. The two forces cancel each other out, so that the steel ropes 3 do not loosen and the steel wires of the steel ropes 3 are not subjected to uneven forces and break, which would affect the lives and safety of the escaping personnel.

[0051] In an embodiment, as shown in Figures 2 and 7, a windbreak whip 44 is provided at the bottom of the first escape gondola 4 or the second escape gondola 5, and the windbreak whip 44 is provided with a pulley to support a safety rope hanging ring 6 and prevent damage or breakage due to friction between the safety rope hanging ring 6 and the outlet at the lower end of the first escape gondola 4 or the second escape gondola 5.

[0052] In the embodiment, as shown in Figures 4 and 6, the steel rope tightening device 11 includes a tightening positioning block 111 provided on the mounting hanger 1, a tightening telescopic rod 112 is movably provided on the tightening positioning block 111, a tightening block 113 is provided 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 winding / reeling winch 2, and a return spring 114 is coaxially provided on the tightening telescopic rod 112, and the steel rope tightening device 11 is for tightening the steel rope 3 wound around the steel rope winding / reeling winch 2, and the return spring 114 automatically controls the contact between the tightening block 113 and the steel rope 3 to prevent the steel rope 3 wound around the steel rope winding / reeling winch 2 from loosening, crossing, or becoming tangled, which could cause the steel rope 3 to stall or become difficult to wind.

[0053] In the embodiment, as shown in Figures 1, 2 and 3, a steel rope winding / releasing pulley 12 is provided on the right side of the mounting hanger 1. The steel rope winding / releasing pulley 12 increases the spacing between the two stages of steel rope 3 suspending the first escape gondola 4, and prevents the steel rope 3 in the steel rope winding / releasing winch 2 from becoming entangled with another stage of steel rope 3 suspending the first escape gondola 4 during winding / releasing, which would prevent the steel rope 3 in the steel rope winding / releasing winch 2 from being able to be wound / releasing.

[0054] In the embodiment, the mounting hanger 1 can be fixed using a conventional clamping wall or bolt mounting method, and can be clamped and mounted freely to the window wall or a security window with high structural strength, which shortens the installation time, does not require pre-installation, and is convenient to install and use.

[0055] In an embodiment, as shown in Figures 1 and 11, the housings of the first escape gondola 4 and the second escape gondola 5 are each provided with a grip 7 to facilitate grasping by escape personnel, and the two grips 7 are provided in the center of the first escape gondola 4 and the second escape gondola 5, respectively, so as to maintain symmetrical balance of the escape gondolas.

[0056] In the embodiment, the grip 7 can be used as a safety device for the escaping person, and the escaping person holds the grip 7 tightly throughout the descent process. If either the safety rope sling 6 or the safety rope 61 breaks during the escaping person's descent, the escaping person can hold the grip 7 tightly to prevent falling and wait for rescue.

[0057] Example 2: If water gets into the fixed mounting jacket 22 when a firefighter uses firefighting equipment to spray water to extinguish a fire, or if oil or other liquid accidentally gets into the fixed mounting jacket 22 during routine maintenance, the frictional force between the braking block 232 and the fixed mounting jacket 22 will be reduced, resulting in a significant reduction in the braking effect.

[0058] In this embodiment, by increasing the roughness of the contact surface between the brake block 232 and the inner wall of the fixed mounting jacket 22, the frictional force when the brake block 232 rubs against the fixed mounting jacket 22 is increased, and slippage when the brake block 232 rubs against the fixed mounting jacket 22 is prevented. If the descent speed of the escape gondolas 4, 5 is too fast, the impact force generated when the escape gondolas 4, 5 land will be too large, which will cause secondary damage to the lives and safety of the escape personnel.

[0059] This embodiment employs a structure as shown in FIG. 12 , in which cylindrical internal teeth can be provided on the inside of the fixed mounting jacket 22 at a portion that comes into contact with the planetary gear mechanism 233, and the inside of the ring gear of the planetary gear mechanism 233 has involute internal teeth, and the outside of the ring gear has cylindrical external teeth / diameter knurling. The cylindrical external teeth on the outside of the ring gear of the planetary gear mechanism 233 and the cylindrical internal teeth on the inside of the fixed mounting jacket 22 rub against or mesh with each other, and the ring gear of the planetary gear mechanism 233 and the fixed mounting jacket 22 are detachably connected by the sliding engagement between the cylindrical external teeth or diameter knurling and the cylindrical internal teeth, which is convenient for removal during inspection and maintenance.

[0060] In the embodiment, the arc surface of the brake block 232 that contacts the fixed mounting jacket 22 can be provided with cylindrical external teeth, flat knurling, or crisscross knurling. When the centrifugal friction reducer 23 rotates, the brake block 232 on the centrifugal friction reducer 23 is swung outward, and friction occurs between the brake block 232 and the inner wall of the fixed mounting jacket 22, causing friction between the cylindrical external teeth on the brake block 232 and the cylindrical internal teeth on the inside of the fixed mounting jacket 22.

[0061] In this embodiment, the tooth height of the cylindrical external teeth or flat knurling on the arc surface of the brake block 232 that contacts the fixed mounting jacket 22 is 0.5 mm or less. This prevents the occurrence of a phenomenon in which, when the brake block 232 is swung outward and rubs against the inner wall of the fixed mounting jacket 22, the two engage and become immovable, locking the centrifugal friction reduction device 23 and preventing it from rotating. This prevents the steel rope 3 from being pinched by the immovable steel rope deflection disk 24 and steel rope tightening roller 241 at the end of the centrifugal friction reduction device 23, preventing the steel rope 3 from being alternately wound and unwound, and preventing the escape gondola from descending.

[0062] In this embodiment, the mounting hanger 1 can also be provided with a foldable structure or an extendable structure. As shown in FIG. 13, the foldable structure of the mounting hanger 1 is made up of two stages of hangers connected by hinges, which are bolted and locked after unfolding. Under the premise that the structural strength of the mounting hanger 1 is guaranteed, making it foldable or extendable reduces the overall length of the mounting hanger 1 by half, thereby shortening the overall packaging length of the device of the present invention and making it easier to store in a box and transport and carry. In addition, the designed weight of the device of the present invention is about 9 kg, making it easier to install and transport, and reducing the labor intensity involved in installing and transporting the device.

[0063] The operation of the present invention is as follows. When the first escape gondola 4 and the second escape gondola 5 are not in use, as shown in FIG. 2, the steel rope 3 is wound and stored in the steel rope winding / releasing winch 2, and the first escape gondola 4 and the second escape gondola 5 are located at the same height. In the event that a fire or other emergency occurs in a high-rise building and the stairs, elevators, or other passageways of the high-rise building become unusable, take out the device of the present invention, attach the mounting hanger 1 of the device to the window wall or a security window with a strong structural strength, inspect whether the device is securely and safely installed, and ensure that there are no dangers or obstacles below the window where the device is installed; When a trapped person uses this device to escape, as shown in Figures 10 and 11, one end of the safety rope 61 is passed from the back to the front under both armpits of the person's body, the other end of the safety rope 61 is passed through one leg, the middle part of the safety rope 61 is then hung on the safety rope hanging ring 6, one hand is held by the grip 7 on the escape gondola, the person safely descends out of the window, the other hand is held by the handle 42, the leg that is not through the safety rope is placed on the outer wall of the high-rise building to control the direction of the body, and the handle 42 is then slowly raised downward. When the handle 42 is pulled, the escape gondola will immediately move downward, and the pulling range of the handle 42 is adjusted according to the descending speed of the escape gondola. If the descending speed of the escape gondola is fast, the pulling force for pulling the handle 42 is reduced; if the descending speed of the escape gondola is slow, the pulling force for pulling the handle 42 is increased; if the descending speed is too fast, the handle 42 is released, the operator adjusts his / her attitude and slowly pulls the handle 42 again; and after the person has landed safely, the safety rope 61 is released.

[0064] When the first trapped person escapes, the positioning pin 212 is opened, and the trapped person uses the first escape gondola 4 to escape. At this time, one section of the steel rope 3 wound around the steel rope winding / releasing winch 2 is the release rope, and one section of the steel rope 3 connected to the steel rope direction changing disc 24 is the fixed rope. When the first trapped person descends and is about to reach the ground, in order to prevent the person from descending too fast and hitting the bottom directly, the person can descend by pulling the handle 42 intermittently. After the first trapped person has landed safely, the remaining trapped people in the high-rise building can insert the positioning pin 212 into the positioning hole 211 according to the descent height of the first trapped person, determine the required length of the steel rope 3, and then rotate the steel rope winding / releasing winch 2 to reach the steel rope. The length of the rope 3 is prevented from changing, and a clearance height of 1 to 1.5 meters is maintained between the escape gondola 4 and the ground when the escape gondola 4 reaches its lowest point. After positioning is completed, the second trapped person uses the second escape gondola 5 to escape. At this time, the first steel rope 3 fixed to the fixed ring on the left side of the mounting hanger 1 serves as the fixed rope, and the steel rope 3 suspending the first escape gondola 4 serves as the release rope for the second escape gondola 5. As the second escape gondola 5 descends, the first escape gondola 4 also moves upward. After the first escape gondola 4 rises to the escape window and the second trapped person has escaped, the third trapped person uses the first escape gondola 4 to descend and escape, and the second escape gondola 5 is pulled up and raised by the first escape gondola 4. Both escape gondolas are alternately raised and lowered in a circular manner, realizing a reciprocating escape.

[0065] It should be noted that although the technical aspects of the present invention have been introduced in detail and the principles of the present invention have been described above, the explanation of the operating principles is only intended to assist in understanding the core idea of ​​the present invention. However, those skilled in the art may make improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications are also within the scope of protection defined by the claims of the present invention.

[0066] Those skilled in the art may make modifications or additions to the described specific embodiments, or substitute similar forms, but these modifications and additions will fall within the scope of the present invention as long as they do not deviate from the structure of the present invention and do not exceed the scope defined by the claims. Therefore, the patentable scope of the present invention should be governed by the appended claims. [Explanation of symbols]

[0067] 1 Mounting hanger 11 Steel rope tightening device 111 Tightening positioning block 112 Tightening telescopic rod 113 Tightening Block 114 Return spring 12 Steel rope winding / reeling pulley 2 Steel rope winding winch 21-story height positioning device 211 Positioning hole 212 Locating pin 22 Fixed mounting jacket 23 Centrifugal friction reducer 231 Centrifugal slide groove 232 Braking Block 233 Planetary Gear Mechanism 24 Steel rope deflection disc 241 Steel rope tightening roller 3 Steel Rope 4 First Escape Gondola 41 Human Body Weight Automatic Braking System 411 Fixed rope retaining block 412 Movable rope retainer block 413 Rocker arm retaining block 414 Toggle Fork Gear 415 Handle base gear 416 Rope retainer block return spring 42 Handle 43 Fixed pulley 44 Windproof Whip 5 Second Escape Gondola 6 Safety rope hanging ring 61 Safety Rope 7 Grip

Claims

1. The reciprocating disaster life-saving device includes a mounting hanger (1) attached to a high-rise building, and a steel rope winding / reeling winch (2) is provided below the mounting hanger (1). Below the steel rope winding / reeling winch (2), a first escape gondola (4) and a second escape gondola (5) for ascending and descending are connected via a steel rope (3). The steel rope winding / releasing winch (2) is provided with a floor height positioning device (21) for adjusting and positioning the winding / releasing length of the steel rope (3), A fixed mounting jacket (22) is fixedly provided below the mounting hanger (1), and a steel rope winding / reeling winch (2) is movably provided coaxially with the fixed mounting jacket (22). A centrifugal friction reduction device (23) is provided inside the fixed mounting jacket (22). The centrifugal friction reduction device (23) is rotated by the winding / reeling of the steel rope (3). The centrifugal friction reduction device (23) rubs against the inner wall of the fixed mounting jacket (22) due to the centrifugal force generated by the rotation, thereby reducing the winding / reeling speed of the steel rope (3). The first escape gondola (4) and the second escape gondola (5) are provided with an automatic human body weight braking system (41), and the steel ropes (3) in the first escape gondola (4) and the second escape gondola (5) are provided with the automatic human body weight braking system (41), and the automatic human body weight braking system (41) is connected to an attachment end of a handle (42), and the gripping end of the handle (42) protrudes outside the escape gondola and is used for automatically braking when an escaping person hangs from the automatic human body weight braking system (41) via a safety rope (61) and gets on the escape gondola (4, 5) and descends to escape. The handle (42) is used to control the descent speed of the first escape gondola (4) and the second escape gondola (5) on the steel rope (3), and when the handle (42) is not pulled down, the gondola (4) is locked by the weight of the person and will not slip down. The first escape gondola (4) and the second escape gondola (5) are each suspended by a steel rope (3) folded in half, forming a load support by the double steel rope (3), and the first escape gondola (4) and the second escape gondola (5) move up and down alternately to perform escape.

2. 2. The reciprocating disaster life-saving device according to claim 1, wherein one end of the steel rope (3) is fixed to the mounting hanger (1), and the other end of the steel rope (3) is inserted from above the second escape gondola (5), passes through a human body weight automatic braking system (41) in the second escape gondola (5), and then protrudes from above the second escape gondola (5); a steel rope direction-changing disc (24) is provided in the steel rope winding / releasing winch (2); the steel rope (3) protruding from above the second escape gondola (5) is directed by the steel rope direction-changing disc (24), and then protrudes from above the first escape gondola (4), passes through the human body weight automatic braking system (41) in the first escape gondola (4), and then protrudes from above the first escape gondola (4); the protruding steel rope (3) is wound around the winch of the steel rope winding / releasing winch (2).

3. The floor height positioning device (21) is A positioning hole (211) provided around the steel rope winding / releasing winch (2); and a positioning pin (212) attached to the mounting plate below the mounting hanger (1) and whose position is adapted to the position of the positioning hole (211); The reciprocating disaster life-saving device according to claim 1, characterized in that a clearance having a 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 centrifugal friction reduction device (23) is a centrifugal slide groove (231) radially provided inside the fixed mounting jacket (22); Two brake blocks (232) are slidably set in the centrifugal slide groove (231), and when the centrifugal slide groove (231) rotates, the brake blocks (232) are swung outward by centrifugal force and rub against the inner wall of the fixed mounting jacket (22); 2. The reciprocating disaster life-saving device according to claim 1, further comprising: a planetary gear mechanism (233) for accelerating the rotational speed of the centrifugal friction reduction device (23), the planetary gear mechanism (233) being provided behind the centrifugal slide groove (231), the centrifugal slide groove (231) being attached to a central gear of the planetary gear mechanism (233), and the steel rope winding / releasing winch (2) being provided coaxially with a ring gear of the planetary gear mechanism (233).

5. The human body weight automatic braking system (41) comprises: A fixed rope holding block (411) provided at a lower position in the first escape gondola (4) and the second escape gondola (5), the fixed rope holding block (411) having a rotating cylindrical holding block provided at its upper end; a movable rope pressing block (412) for pressing or loosening the steel rope (3), which is movably provided above the fixed rope pressing block (411), and has a rotating cylindrical pressing block at its lower end, and the cylindrical pressing block on the fixed rope pressing block (411) and the cylindrical pressing block on the movable rope pressing block (412) correspond to each other in a staggered manner; a rocker arm pressing block (413) for pressing down the movable rope pressing block (412), the rocker arm pressing block (413) being hingedly connected above the movable rope pressing block (412), the movable rope pressing block (412) being hingedly connected to its central part; a toggle fork gear (414) for toggling the rocker arm pressing block (413) up and down, the toggle fork gear (414) being provided beside the rocker arm pressing block (413), with the upper part of the rocker arm pressing block (413) engaged within the toggle fork; a handle root gear (415) that meshes with the teeth of the toggle fork gear (414), the shaft of which is connected to one end of the handle (42), and the other two ends of the handle (42) that extend outside the first escape gondola (4) and the second escape gondola (5); 2. The reciprocating disaster life-saving apparatus according to claim 1, further comprising: a rope holding block return spring (416) for pulling and returning the rocker arm holding block (413), the first end of which is fixed to the escape gondola housing above the rocker arm holding block (413), and the second end of which is connected to the rocker arm holding block (413).

6. A safety rope ring (6) is connected to the upper end of the rocker arm holding block (413), and the safety rope ring (6) protrudes from the lower ends of the first escape gondola (4) and the second escape gondola (5). The safety rope ring (6) is used to connect a safety rope (61). During the descent of the first escape gondola (4) or the second escape gondola (5), the rocker arm holding block (413) is pulled and pushed down by the weight of the escapee via the safety rope hanging loop (6), forming a self-lock. The reciprocating disaster life-saving apparatus according to claim 5, wherein a transmission ratio between the handle root gear (415) and the toggle fork gear (414) is less than 1.

7. The reciprocating disaster life-saving device according to claim 1, characterized in that two fixed pulleys (43) are provided on each side of the human body weight automatic braking system (41), the fixed pulleys (43) are used to change the direction of the steel rope (3), and the steel rope (3) on the fixed pulleys (43) on both sides of the human body weight automatic braking system (41) moves in opposite directions to counteract the torsional force generated when the steel rope (3) is running.

8. 2. The reciprocating disaster life-saving apparatus according to claim 1, wherein the mounting hanger (1) is provided with a steel rope tightening device (11) for tightening the steel rope (3) wound around the steel rope winding / releasing 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 return spring (114), wherein the tightening positioning block (111) is provided on the mounting hanger (1), the tightening telescopic rod (112) is movably provided on the tightening positioning block (111), the tightening block (113) is provided 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 / releasing winch (2), and the return spring (114) is coaxially provided on the tightening telescopic rod (112).

9. The steel rope direction-changing disk (24) is provided coaxially with the central gear shaft of the planetary gear mechanism (233), and a steel rope tightening roller (241) is provided below the steel rope direction-changing disk (24). The reciprocating disaster life-saving device according to claim 1 or 2, characterized in that the housings of the first escape gondola (4) and the second escape gondola (5) are each provided with one grip (7), and the two grips (7) are provided in the middle of the first escape gondola (4) and the second escape gondola (5), respectively.

10. The contact surface between the fixed mounting jacket (22) and the brake block (232) is a rough surface, and the inner wall of the fixed mounting jacket (22) and the arcuate surface of the brake block (232) that contacts the fixed mounting jacket (22) are provided with cylindrical external teeth, flat knurling, or cross knurling, a contact surface of the fixed mounting jacket (22) with a ring gear of the planetary gear mechanism (233) is provided with cylindrical internal teeth, and an outer surface of the ring gear of the planetary gear mechanism (233) is provided with cylindrical external teeth that mesh with the cylindrical teeth of the fixed mounting jacket (22); The reciprocating disaster life-saving device according to claim 1 or 2, characterized in that the tooth height of the cylindrical external teeth or flat knurling on the arcuate surface of the brake block (232) that contacts the inner wall of the fixed mounting jacket (22) and the fixed mounting jacket (22) is 0.5 mm or less.

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