High-altitude rope slow descending escape device

Abstract

The invention discloses a high-altitude rope slow descending escape device. The main frame body is provided with a main support disc and an auxiliary support disc, the core shaft axially penetrates through the main frame body, the rope winding wheel is located in the main frame body and movably arranged on the core shaft in a sleeving mode, the annular friction plates are in contact and attached to the outer side faces of surrounding plates at the two ends of the rope winding wheel, and the pushing cap is installed at one end of the core shaft in a screwed connection mode and located on the outer side of the main support disc. The directional tray is located on the inner side of the main support disc and makes contact with the friction plate, the pressing disc is arranged on the inner side of the main support disc, the compression spring is arranged between the directional tray and the pressing disc, the guide pin is perpendicularly and fixedly connected to the directional tray, a pushing column movably arranged on the main support disc in a penetrating mode is arranged between the pushing cap and the pressing disc, and the guide pin movably penetrates through the main support disc. The releasing speed of the rope of the escape device does not change sharply, so that speed regulation is not pause, two ends are stressed in a balanced manner, enough resistance is provided, frictional resistance is distributed in a circumferential balanced manner, the safety is high, the resistance regulation amplitude is large, and the universality is good.

Description

Technical Field

[0001] The present invention relates to a descending escape tool, and particularly to an aerial rope descent escape device. Background Art

[0002] The rescue-type aerial escape device is mainly a tool for helping people located in mid-air / high-rise buildings to descend to a safe area. In the existing rescue-type aerial escape devices, when controlling the release of the rope, a friction plate / disc is set on one side of one end of the rope winding wheel, and the friction force is increased or decreased to control the rotation speed of the rope winding wheel or lock it. This unilateral control method has relatively limited friction force.

[0003] In the technical solution disclosed in the Chinese invention patent (application number 200820097737.X, portable aerial descent device), an eccentric cam is arranged at one end of the handle, and by swinging the handle, the resistance between the brake disc and the brake friction plate can be adjusted to adjust the speed of rope release. In the technical solution, the rope winding wheel is locked by spring preloading. Pulling the handle can reduce the resistance between the brake disc and the friction plate. The process of pulling the handle is to overcome the spring pressure. The intervention of the eccentric cam pulling up the adjusting rod plays a role in offsetting the spring. The spring does not play a role in determining the magnitude of the friction force at this time. The frictional resistance and the speed of rope release are determined by the pulling amplitude of the handle, and also by the amount of spring pressure offset by the handle. If the operator is the user of the descent rescue device himself / herself, when in mid-air and nervous, it is easy to forcefully pull down the handle, then the speed will be even faster. When the hands are shaking nervously, it is also difficult to well control the swinging amplitude of the handle, which is likely to form jerks during descent, further increasing the nervousness.

[0004] In addition, during use, the compression amount of the compression spring cannot be adjusted manually. It is not certain whether the original spring pressure can effectively lock the brake disc. For example, the same spring compression amount may not be able to effectively lock the brake disc for a person with a larger body weight, thus unable to control the descent speed. If the set spring compression is very tight, then a person with a smaller body weight (usually a child or a weak person) needs to fully open the handle throughout the process to descend smoothly, which is a test for the weak. Therefore, the product has poor versatility for people with different body weights.

[0005] Furthermore, for the braking mechanism controlled by the handle and the eccentric cam, the braking compression spring and the corresponding eccentric cam can only be set at two positions (usually two points on the diameter of the brake disc), and the brake disc and the friction plate of the whole circumference cannot be well locked. The frictional resistance is not sufficient, and the frictional force cannot be evenly distributed on the entire circumference of the friction plate, which is likely to cause damage to each frictional resistance device, and this is unacceptable for rescue equipment. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide an aerial rope descent escape device with smooth speed regulation, large resistance adjustment range, good versatility, and balanced distribution of frictional resistance.

[0007] To solve the above technical problems, the technical solution adopted by the present invention is: an aerial rope descent escape device, which includes a main frame body having a main support disk and a secondary support disk, a core shaft axially passing through the main frame body, a rope winding wheel located inside the main frame body and movably sleeved on the core shaft, an annular friction plate in contact with and fitting on the outer side surfaces of the end plates at both ends of the rope winding wheel, a spiral push cap screwed and installed at one end of the core shaft and located outside the main support disk, a directional tray located inside the main support disk and serving as a friction disk in contact with the friction plate, a pressure plate provided inside the main support disk, a compression spring provided between the directional tray and the pressure plate, a guide pin vertically and fixedly connected to the directional tray, a push rod movably passing through the main support disk is provided between the spiral push cap and the pressure plate, and the guide pin is adapted to movably pass through the main support disk to stop and position the directional tray.

[0008] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, a support rod and a pull rod are connected between the main support disk and the secondary support disk, so that the main frame body forms a cage shape.

[0009] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, both the main support disk and the secondary support disk are circular disks; the support rods and the pull rods are distributed along the circumference of the main support disk.

[0010] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, the compression spring is an annular disc spring.

[0011] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, the core shaft is fixedly connected to the secondary support disk.

[0012] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, a push disk with its back surface tightly abutting against the spiral push cap is provided inside the spiral push cap, and the push disk can cover the outer end surface of the push rod to push each push rod in parallel; a through hole is provided in the middle of the spiral push cap for the core shaft to pass through.

[0013] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, the spiral push cap is a disk body with anti-slip stripes on its surface.

[0014] As an improvement to the technical solution of the aerial rope descent escape device of the present invention, the spiral push cap is a hand crank wheel disk with a handle.

[0015] As an improvement to the technical solution of the high-altitude rope descent escape device of the present invention, the main frame body is provided with a rope hole for the rope to pass through, and an outer covering shell is arranged on the periphery of the main frame body. A through hole is arranged at the position of the covering shell corresponding to the rope hole; a rope is wound around the rope winding wheel, the front end of the rope is connected with an upper hanging buckle, and the rear end of the rope is fixedly connected to the rope winding wheel; a hanging rope and a lower hanging buckle are arranged on one side of the main frame body opposite to the rope hole.

[0016] As an improvement to the technical solution of the high-altitude rope descent escape device of the present invention, the support rod is a plate-shaped beam body, and the rope hole is arranged in the middle of the support rod.

[0017] The beneficial effects of the present invention are as follows: The high-altitude rope descent escape device adjusts the speed by rotating the spiral push cap screwed onto the core shaft. The frictional resistance between the friction plate and the resistance disc-shaped device in contact with it changes slowly, and the release speed of the rope will not change sharply, so the speed adjustment is not jerky. Friction resistance structures are arranged at both ends of the rope winding wheel, so that the rope winding wheel is evenly stressed and has sufficient frictional force, improving the safety of the escape device.

[0018] The compression spring and the spiral push cap are arranged at different positions corresponding to the core shaft. The pressure is transmitted to the friction plate through the push rod, the pressure plate, the compression spring and the directional tray. The compression spring always plays the role of spring support during use. The axial movement of the spiral push cap only plays a superimposing role. Adjusting the compression amount of the compression spring will not replace the role of the spring or eliminate the role of the spring. Therefore, the adjustment range of the spiral push cap can be relatively large. It can be preset according to the weight of the user before use and can be generally adapted to users of different weights. The resistance adjustment range is large and the versatility is good.

[0019] By setting the directional tray and the pressure plate and the compression spring between them, the thrust formed by the spiral push cap can be evenly transmitted to the rope winding wheel and the adjacent friction device in contact with it through the pressure plate, the compression spring and the directional tray, the circumferential force is balanced, and the frictional resistance is evenly distributed in the circumferential direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a high-altitude rope descent escape device of the present invention.

[0021] Figure 2 It is a front structural schematic diagram of a high-altitude rope descent escape device of the present invention with the covering shell removed.

[0022] Figure 3 is Figure 2 The three-dimensional structural schematic diagram of the shown high-altitude rope descent escape device.

[0023] Figure 4 is Figure 3Schematic three-dimensional structure diagram of the high-altitude rope descent escape device with the spiral push cap removed.

[0024] Figure 5 For Figure 4 Schematic side structure diagram of the high-altitude rope descent escape device shown.

[0025] Figure 6 For Figure 3 Another schematic three-dimensional structure diagram of the high-altitude rope descent escape device shown from an inclined side.

[0026] Figure 7 Schematic three-dimensional structure diagram of the main support disk of the present invention.

[0027] Figure 8 Schematic three-dimensional structure diagram of the annular disc spring in the shape of a ring butterfly. Detailed implementation manners

[0028] The following further illustrates the detailed implementation manners of the present invention in conjunction with the accompanying drawings.

[0029] As Figures 1 to 6 shown, a high-altitude rope descent escape device of the present invention includes a main frame body having a main support disk 12 and a sub-support disk 13, a core shaft 15 axially passing through the main frame body, a rope winding wheel 16 located inside the main frame body and movably sleeved on the core shaft 15, an annular friction plate 18 in contact with and fitting on the outer side surfaces of the end plates at both ends of the rope winding wheel 16, a spiral push cap 21 screwed and installed at one end of the core shaft 15 and located outside the main support disk 12, a directional tray 22 located inside the main support disk 12 and in contact with the friction plate 18 and serving as a friction disk, a pressure plate 25 provided inside the main support disk, a compression spring 23 provided between the directional tray 22 and the pressure plate 25, a guide pin 24 vertically and fixedly connected to the directional tray 22, and a top push column 27 movably passing through the main support disk 12 is provided between the spiral push cap 21 and the pressure plate 25. The top push column 27 plays a role in axially transmitting the driving force, transmitting the axial thrust of the spiral push cap 21 through the main support disk 12 to the back surface of the pressure plate 25. The spiral push cap 21 is screwed and installed at the tail end of the core shaft 15, and the spiral push cap 21 can be easily turned by hand to rotate and generate an axial micro-movement. The guide pin 24 is movably and fittingly passed through the main support disk 12 to stop the rotation and position the directional tray 22, so that the directional tray 22 is circumferentially stopped from rotating relative to the main support disk 12, but axially movable, and it is ensured that neither the compression spring 23 nor the pressure plate 25 generates a circumferential displacement.

[0030] Among them, the high-altitude rope rappelling escape device adjusts the speed by rotating the spiral push cap 21 that is spirally connected to the mandrel 15. The frictional resistance between the friction plate 18 and the resistance disk device in contact with it changes slowly, and the release speed of the rope 66 will not change sharply, so the speed adjustment is not jerky. Frictional resistance structures are provided at both ends of the rope winding wheel 16, so that the rope winding wheel 16 is evenly stressed and has sufficient frictional force, improving the safety of the escape device.

[0031] The compression spring 23 and the spiral push cap 21 are arranged at different positions corresponding to the mandrel 15. The pressure is transmitted to the friction plate 18 through the push rod 27, the pressure plate 25, the compression spring 23, and the orientation tray 22. The compression spring 23 always plays a role of spring support during use. The axial movement of the spiral push cap 21 only plays a superimposing role. Adjusting the compression amount of the compression spring 23 will not replace or eliminate the role of the spring. Therefore, the adjustment range of the spiral push cap 21 can be relatively large. It can be preset according to the user's weight before use and can be generally adapted to users of different weights. The resistance adjustment range is large and the versatility is good. The friction plates 18 are arranged at both ends of the rope winding wheel 16, making the frictional force more sufficient, and there is pressure around the whole circumference, with uniform friction around the whole circumference, and the local friction will not be too large, so the friction is uniformized, making the operation of the escape device more stable and ensuring a uniform descending speed.

[0032] The set friction plate 18 can be replaced after wear. When the friction plate 18 wears and thins, compensation can be made by screwing the spiral push cap 21. The friction plate 18 does not completely lock the rope winding wheel 16 of the escape device. It is only the different sizes of the frictional resistance that result in different speeds of releasing the rope 66. The friction plate 18 is set in the middle as a transition, and at the same rotational speed of the rope winding wheel 16, the relative circumferential rotational speed of the devices on both sides of the friction plate 18 can be reduced by half.

[0033] By setting the orientation tray 22, the pressure plate 25 and the compression spring 23 between them, the thrust formed by the spiral push cap 21 can be evenly transmitted to the rope winding wheel 16 and the adjacent friction devices in contact with it through the pressure plate 25, the compression spring 23, and the orientation tray 22, with balanced circumferential force and balanced circumferential distribution of frictional resistance.

[0034] Among them, a support rod 31 and a pull rod 32 are connected between the main support plate 12 and the sub-support plate 13, making the main frame body in a cage shape, so that a rope winding wheel 16, a friction plate 18, an orientation tray 22, a compression spring 23, and a pressure plate 25 can be arranged inside the cage. The guide pin is inserted into the main support plate 12 to position the orientation tray 22 against circumferential rotation. The push rod passes through the main support plate 12 and transmits the driving force of the spiral push cap 21 outside the cage to the pressure plate 25 inside the cage. The cage-shaped main frame body also protects the devices inside the cage and ensures their normal operation.

[0035] Among them, as Figure 7 shown, the main support disc 12 is provided with a central hole 85 for the mandrel 15 to pass through, a pin hole 83 for the guide pin 24 to pass through, a column hole 81 for the push column 27 to penetrate for guiding, and a rod hole 86 for the pull rod 32 to pass through.

[0036] Furthermore, both the main support disc 12 and the auxiliary support disc 13 are circular discs, so that the friction plate 18 and the rope winding wheel 16 of the internal device can rotate circumferentially, and the pressure is transmitted in a full circle by the orientation tray 22 and the pressure plate 25; the support rods 31 and the pull rods 32 are distributed along the circumference of the main support disc 12, so as to form a stable cylindrical cage.

[0037] Among them, the compression spring 23 is an annular butterfly disc spring, as Figure 8 shown, so as to more evenly elastically transmit the pressure of the pressure plate 25 to the orientation tray 22, uniformly transmit in a full circle, the friction plate 18 is uniformly stressed in a full circle to generate frictional resistance, the frictional force is more sufficient, and the rope winding wheel 16 rotates more stably.

[0038] Among them, a plurality of compression springs 23 perpendicular to the orientation tray 22 are circumferentially distributed on the orientation tray 22, which can also play a role in evenly transmitting elastic pressure.

[0039] In addition, the mandrel 15 is fixedly connected to the auxiliary support disc 13, and can be fixed by welding, so as to prevent the mandrel 15 from rotating relative to the auxiliary support disc 13 and even the entire main frame body, so that the mandrel will not be driven to rotate when the spiral push cap 21 rotates, and the failure of adjusting the tightness for speed regulation is avoided.

[0040] Among them, a push disc 28 with its back tightly abutting against the spiral push cap 21 is provided inside the spiral push cap 21, and the push disc 28 can cover the outer end face of the push column so as to push each push column 27 in parallel. The setting of the push disc 28 can make there be no frictional force generated by rotation between the push disc 28 and the push column 27, and relative rotation occurs between the spiral push cap 21 and the push disc 28, so that the rotation resistance of the spiral push cap 21 is smaller and it is easier to adjust. The push disc 28 is preferably a plain bearing, which reduces the resistance generated by the reaction force of the push disc 28 and the pressure plate 25 on the spiral push cap when the spiral push cap rotates, so that the spiral push cap 21 can rotate flexibly to adjust the axial position, realize accurate speed regulation of the rope winding wheel 16, and thus accurately control the release speed of the rope.

[0041] Among them, a perforation is provided in the middle of the spiral push cap 21 for the mandrel 15 to pass through, so that the adjustment length of the spiral push cap 21 relative to the mandrel 15 is not limited, the adjustment range can be larger, and the versatility is better.

[0042] Among them, the spiral push cap 21 is a disc body with anti-slip stripes on its surface, which is convenient for holding and adjusting.

[0043] Among them, the spiral push cap 21 is a hand-operated roulette wheel with a handle, which can be rotated and adjusted more labor-savingly.

[0044] Among them, the main frame body is provided with a rope hole 61 for the rope 66 to pass through, and an outer shell 58 is provided on the periphery of the main frame body. A through hole is provided at the position of the outer shell 58 corresponding to the rope hole 61; the rope winding wheel 16 winds the rope 66. The front end of the rope 66 is connected with an upper hanging buckle 62, and the rear end of the rope 66 is fixedly connected to the rope winding wheel 16; a hanging rope 68 and a lower hanging buckle 63 are provided on one side of the main frame body opposite to the rope hole 61. The upper hanging buckle 62 is fixed at the starting point position, and the lower hanging buckle 63 is connected to the safety belt on the user's body. The use of the hanging buckle facilitates quick installation and connection.

[0045] Furthermore, the support rod 31 is a plate-shaped beam body, and the rope hole 61 is provided in the middle of the support rod 31 to maintain the stability of the escape device during the process of releasing the rope 66 and prevent it from shaking.

[0046] The above-disclosed are only the preferred embodiments of the present invention. Of course, the scope of the rights of the present invention cannot be limited thereby. Therefore, equivalent changes made according to the scope of the patent application of the present invention still fall within the scope covered by the present invention.

Claims

1. An aerial rope descent escape device, characterized in that: It includes a main frame body with a main support disc and a secondary support disc, a mandrel axially passing through the main frame body, a rope winding wheel located inside the main frame body and movably sleeved on the mandrel, an annular friction plate in contact with and fitting against the outer side surfaces of the gussets at both ends of the rope winding wheel, a spiral push cap screwed and installed at one end of the mandrel and located outside the main support disc, a directional tray located inside the main support disc and serving as a friction disc in contact with the friction plate, a pressure plate provided inside the main support disc, a compression spring provided between the directional tray and the pressure plate, a guide pin vertically and fixedly connected to the directional tray, a push rod movably passing through the main support disc is provided between the spiral push cap and the pressure plate, and the guide pin is adapted to movably pass through the main support disc to stop and position the directional tray.

2. The high-altitude rope slow descent escape device according to claim 1, characterized in that: A support rod and a pull rod are connected between the main support disc and the secondary support disc to form a cage-shaped main frame body.

3. The high-altitude rope slow descent escape device according to claim 2, wherein: Both the main support disc and the secondary support disc are circular discs; the support rod and the pull rod are circumferentially distributed along the main support disc.

4. The high-altitude rope descent escape device according to claim 1, wherein: The compression spring is an annular butterfly-shaped disc spring.

5. The high-altitude rope slow descent escape device according to claim 1, characterized in that: The mandrel is fixedly connected to the secondary support disc.

6. The high-altitude rope slow descent escape device according to claim 1, characterized in that: A push disc with its back tightly abutting against the spiral push cap is provided inside the spiral push cap, and the push disc can cover the outer end surface of the push rod to push each push rod in parallel; a through hole is provided in the middle of the spiral push cap for the mandrel to pass through.

7. The high-altitude rope descent escape device according to claim 1, characterized in that: The spiral push cap is a disc body with anti-slip stripes on its surface.

8. The high-altitude rope descent escape device according to claim 1, wherein: The spiral push cap is a hand crank wheel disc with a handle.

9. The high-altitude rope rappelling escape device according to claim 2, wherein: The main frame body is provided with a rope hole for the rope to pass through, and a covering shell is provided on the periphery of the main frame body. A through hole is provided in the covering shell corresponding to the rope hole; the rope winding wheel winds a rope, the front end of the rope is connected with an upper hanging buckle, and the rear end of the rope is fixedly connected to the rope winding wheel; a hanging rope and a lower hanging buckle are provided on one side of the main frame body opposite to the rope hole.

10. The high-altitude rope descent escape device according to claim 9, characterized in that: The support rod is a plate-shaped beam body, and the rope hole is provided in the middle of the support rod.

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