Speed-adjustable descending device

Abstract

The invention relates to the technical field of outdoor descending articles, in particular to a speed-adjustable descending device which comprises a fixed side plate, a handle is rotationally arranged on the outer side of the fixed side plate, a transmission block is rotationally embedded into one end of the handle, a cam is rotationally arranged in the middle of the fixed side plate, and an extension plate is fixed to the outer side of the cam. A linkage column which is attached to the transmission block in an intermittent transmission mode is fixed to one end of the extension plate, a rope winding base is fixed to one end of the fixed side plate, and a binding mechanism is fixed to the inner side of the extension plate. A transmission block on a handle extrudes and pushes a linkage column on a cam to move an air bag cushion of the cam to rotate to leave a rope winding seat, a rope smoothly descends between the rope winding seat and the cam, a user flurry and rotates the handle in a large range to enable the transmission block to be separated from the linkage column, and the cam rotates clockwise under the traction force of the rope; and the cam rotates to approach the rope winding seat to clamp and stop the rope, so that the effect of automatically locking the rope to descend when the user is flurried is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of outdoor descending equipment, in particular to a speed-adjustable descending device. Background Art

[0002] A descending device, also called a descender, is an outdoor descending device that controls the speed of a rope descent and locks the rope. It plays an important role in outdoor sports and rescue, especially in rock climbing, mountaineering, extreme outdoor activities and rescue scenarios. This type of device is mainly used to protect operators (sometimes including trapped persons) from safely descending on steep terrain. Among them, a cam descender is a commonly used descending device, which uses the contact between the specific profile of the cam and the follower (such as a guide wheel, a rope winding seat, etc.) to achieve the descending movement. The rotation of the cam drives the rope to press against the follower to achieve the effect of a smooth descent of the rope; In the existing public technology, a controllable lifting protector with Chinese patent application number "CN201510584717.X" is actually a descender, which mainly uses a rope wheel (cam) with a polygonal cross-section and a rope winding seat (follower) to achieve the effect of automatic braking anti-falling safety protection and manual control of descent. Specifically, the rope wheel is pulled by the rope wound around it and rotates a small angle. The rounded edges on the rope wheel can press the rope against the braking surface of the rope winding seat to stop it. At this time, the control arm linked to the rope wheel opens an angle with the fixed plate; Most of the cam-type descending devices similar to the above-mentioned scheme use the polygonal rope pulley and the rope winding seat to achieve the characteristic of buffering the rope descent; however, in the case of accidental panic, if the operator holds the control handle too tightly, the rope will continue to descend, affecting the braking effect of the rope descent, and the cam can only be used to brake the rope from one end of the wound rope, which is not conducive to braking the rope at both ends of the rope at the same time to achieve the protection effect of double braking. In addition, most of the cam-type descending devices are not convenient for buffering the descent of thinner ropes, resulting in poor applicability and scalability of the descending device. Summary of the invention

[0003] The object of the present invention is to provide a speed-adjustable descending device to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: An adjustable speed descending device, comprising: A fixed side plate, wherein two ends of the fixed side plate are respectively fixed with a connecting shaft 1 and a connecting shaft 2; A handle is rotatably sleeved on one end of a connecting shaft that passes through a fixed side plate, and one end of the handle is embedded with a rotatable transmission block; A cam, used to press against the rope buffer during descent. The cam is eccentrically rotatably connected to the middle of a fixed side plate. An extension plate is fixed to the outside of the cam. One end of the extension plate is fixed with a linkage column that intermittently drives and abuts against a transmission block. An airbag pad is fixed to the outside of the cam; A rope winding seat, fixedly connected to a second connecting shaft. An airbag body is fixedly embedded inside the rope winding seat. An active pressing plate that is slidably clamped to the rope winding seat is fixed to the outside of the airbag body. A hose is fixedly connected and communicated between the airbag body and the airbag pad; A restraint mechanism, fixed to the inner side of the extension plate, used to clamp and fix one end of the rope and convey gas to the airbag pad and the airbag body; A movable side plate, rotatably connected to the second connecting shaft, used to protect the cam, the rope winding seat and the restraint mechanism. A cover is fixed to the outside of the movable side plate; A switch assembly, arranged on the outside of the movable side plate to control the opening and closing of the movable side plate.

[0005] Furthermore, a torsion spring one is sleeved between the first connecting shaft and the handle. A rivet that is fixedly connected to the rope winding seat is inserted and fixed to the outside of the fixed side plate. A first slot that is movably clamped to the rivet is opened at the bottom of the handle.

[0006] Furthermore, a fan-shaped notch for the transmission block to move is opened on the inner side of the handle. A hanging hole block is fixed to one end of the fixed side plate. A first fixed shaft is inserted and fixed between the hanging hole block and the fixed side plate. A second slot that is movably clamped to the first fixed shaft is fixed to one end of the movable side plate.

[0007] Furthermore, a wire groove for the rope to wind through is opened on the outside of the cam. A second fixed shaft that is fixedly connected to the fixed side plate is rotatably inserted at the eccentric position of the cam. A torsion spring two is sleeved between the second fixed shaft and the cam. A protrusion is arranged at the position of the cam close to the airbag pad.

[0008] Furthermore, two connecting pipes that are both communicated with the airbag body are fixed to the bottom of the rope winding seat. One of the connecting pipes is fixedly connected and communicated with the hose. A plurality of counterweight balls are sleeved and fixed to the outside of the hose.

[0009] Furthermore, the restraint mechanism includes: A C-shaped plate, fixedly embedded with the extension plate. A guide rail is fixed to one end of the extension plate; Two first wedge-shaped blocks, both slidably clamped to the guide rail; An arc-shaped block, slidably connected to the C-shaped plate. Two second wedge-shaped blocks that are respectively drivingly connected to the corresponding first wedge-shaped blocks are fixed to the top surface of the arc-shaped block; An arc-shaped support plate, fixed to the bottom of the C-shaped plate. A first rectangular hole for the arc-shaped block to pass through is opened in the middle of the arc-shaped support plate; The telescopic airbag is fixed at the top of the arc-shaped support plate, and an air delivery pipe for delivering air to the airbag pad is fixedly connected to one end thereof. The spring telescopic rod is fixedly connected to the bottom of the C-shaped plate. The output end of the spring telescopic rod is fixedly provided with a circular plate, and the circular plate is fixedly connected to the arc-shaped block.

[0010] Furthermore, two sliding grooves respectively slidably connected to the corresponding position wedge blocks II are formed on the top surface of the C-shaped plate. A first return spring is fixed between the two wedge blocks I. An air delivery groove communicated with the air delivery pipe is formed inside the cam close to one side of the extension plate, and one end of the air delivery groove背离 the air delivery pipe is communicated with the airbag pad.

[0011] Furthermore, the switch assembly includes: The拨动块 is slidably connected to the outside of the cover. One end of the拨动块 is fixedly provided with a moving column slidably connected to the cover. The L-shaped block is slidably abutted against the outside of the moving side plate. The corner position of the L-shaped block is fixedly connected to the moving column. A locking block is fixedly provided at the bottom of the L-shaped block, and a rectangular hole II for the locking block to move is formed at the bottom of the moving side plate. The second return spring is fixed between the L-shaped block and the cover, and the elastic force of the second return spring makes the moved L-shaped block return to the initial position.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. By providing a freely rotatable handle on the outside of the fixed side plate, a transmission block is embedded in the handle, and the handle is rotated within a certain range. Operating the handle makes the transmission block contact the linkage column structure on the cam (refer to the specification Figure 2 ), the linkage column rotates counterclockwise synchronously with the transmission block on the handle, the protruding part of the cam rotates away from the rope winding seat, so that the gap between the protruding part of the cam and the rope winding seat gradually becomes larger, and then the rope can smoothly pass through the gap, facilitating the descent of the rope. When the user turns the handle counterclockwise at a large angle in a panic, the transmission block in the handle is separated from the linkage column on the cam. Under the traction of the rope upwards, the cam rotates clockwise, and the protruding part on the cam rotates close to the rope winding seat, and the protruding part and the rope winding seat grip and clamp the rope, realizing automatic buffering and speed regulation and stopping the descent of the rope when the user is in a panic, and realizing the function of preventing panic. A first torsion spring is sleeved between the handle and the first connecting shaft. After the rope is stopped, the handle is released. Under the restoring force of the first torsion spring, the transmission block on the handle rotates clockwise over the linkage column on the cam. Similarly, operating the handle counterclockwise again can make the rope continue to descend. The overall operation is simple and it is easy to control the descent speed of the rope.

[0013] 2. After the user panics and causes the transmission block on the handle to rotate counterclockwise over the linkage column, the cam rotates clockwise under the traction of the rope, and the rope moves to the arc block position close to the cam extension plate. The rope moves the arc block along the arc support plate, and the two wedge blocks 2 squeeze the wedge block 1 to make the two wedge blocks 1 move closer to each other, thereby making the two wedge blocks 1 clamp one end of the fixed rope, and cooperate with the cam and the rope winding seat to clamp the other end of the fixed rope, so as to achieve the effect of synchronously stopping the rope transmission from both ends of the rope, which is beneficial to improving the braking effect of the rope descent.

[0014] 3. When the rope moves along the arc-shaped support plate with the arc-shaped block, the arc-shaped block will squeeze the telescopic airbag in the expanded state, and the gas compressed in the telescopic airbag will be transported to the air delivery groove inside the cam through the air delivery pipe, and then transported to the airbag cushion. When the volume of the airbag cushion expands, the excess gas will be transported to the airbag body through the hose. The expanded airbag body will then extend and move out from the rope winding seat with the active pressure, so that the cam and the rope winding seat can clamp and fix the rope more firmly; When the rope is thinner, a proper amount of gas can be pre-delivered to the inside of the airbag through a connecting tube, and the valve on the connecting tube can be closed. At this time, because the movable pressure plate is squeezed out by the expanded airbag, the distance between the cam and the rope pressure seat is smaller in the initial state, which can stop the thinner rope in a short time later. The two wedge blocks can continuously approach each other in the process of the rope moving with the arc block, and are also suitable for clamping and fixing thinner ropes, thereby realizing adaptive adjustment and braking of ropes of different thicknesses, which is beneficial to improving the applicability and scalability of the descent device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the handle rotation and cover opening structure of the present invention. Figure 1 ; Figure 3 This is a schematic diagram of the handle rotation and cover opening structure of the present invention. Figure 2 ; Figure 4 It is a schematic diagram of the structure of the cam, the restraining mechanism and the rope winding seat in the present invention; Figure 5 It is a schematic diagram of the structure of the cam and the restraining mechanism in the present invention; Figure 6 It is a schematic diagram of the structure of the cam and the rope winding seat in the present invention; Figure 7 It is a schematic diagram of the structure of the restraining mechanism in the present invention; Figure 8 It is a schematic diagram of the structure of the restraining mechanism in the present invention in a split three-dimensional state; Fig. 9It is a schematic diagram of the structure of the fixed side panel and the handle in the present invention in a split three-dimensional state; Fig.10 It is a schematic diagram of the structure of the switch assembly in the present invention.

[0016] In the figure: 100, fixed side plate; 110, connecting shaft 1; 111, torsion spring 1; 120, connecting shaft 2; 130, hanging hole block; 140, rivet; 150, fixed shaft 1; 200, handle; 210, transmission block; 220, card slot 1; 300, cam; 310, extension plate; 311, linkage column; 320, airbag cushion; 330, fixed shaft 2; 331, torsion spring 2; 400, rope seat; 410, airbag body; 420, movable pressure plate; 430, hose; 43 1. Counterweight ball; 450. Connecting pipe; 500. Restraining mechanism; 510. L-shaped plate; 511. Guide rail; 520. Wedge block 1; 521. Return spring 1; 530. Arc block; 531. Wedge block 2; 540. Telescopic airbag; 541. Air pipe; 550. Spring telescopic rod; 600. Moving side plate; 610. Cover; 620. Card slot 2; 700. Switch assembly; 710. Toggle block; 720. L-shaped block; 721. Locking block; 730. Return spring 2. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] For example, see Figure 1-10In an embodiment of the present invention, an adjustable speed descending device includes a fixed side plate 100, two ends of the fixed side plate 100 are respectively fixed with a connecting shaft 110 and a connecting shaft 2 120, the connecting shaft 1 110 penetrates one end of the fixed side plate 100 and is rotatably sleeved with a handle 200, one end of the handle 200 is embedded and rotatably provided with a transmission block 210, a cam 300 is eccentrically rotated in the middle of the fixed side plate 100 for pressing the rope buffer to descend, an extension plate 310 is fixed to the outer side of the cam 300, one end of the extension plate 310 is fixed with a linkage column 311 that intermittently transmits and abuts against the transmission block 210, an airbag cushion 320 is fixed to the outer side of the cam 300, and a rope winding seat 400 is fixedly connected to the outer side of the connecting shaft 2 120, An airbag body 410 is embedded and fixed inside the rope winding seat 400, and a movable pressure plate 420 that is slidably engaged with the rope winding seat 400 is fixed on the outside of the airbag body 410. A hose 430 is fixed to connect the airbag body 410 and the airbag cushion 320, and a restraining mechanism 500 is fixed on the inside of the extension plate 310 for clamping one end of the fixed rope and delivering gas to the airbag cushion 320 and the airbag body 410. A movable side plate 600 is rotatably connected to the outer side of the connecting shaft 120 for protecting the cam 300, the rope winding seat 400 and the restraining mechanism 500. A cover 610 is fixed on the outer side of the movable side plate 600, and a switch assembly 700 is arranged on the outer side of the movable side plate 600 for controlling the opening and closing of the movable side plate 600.

[0019] Specifically, by rotating the handle 200, the transmission block 210 on the handle 200 squeezes and pushes the linkage column 311 on the cam 300 to move together, and the linkage column 311 moves to rotate the airbag cushion 320 of the cam 300 away from the rope winding seat 400, so that the rope can smoothly descend between the rope winding seat 400 and the cam 300. When the user accidentally rotates the handle 200 in a panic or releases the handle 200, the transmission block 210 will be separated from the linkage column 311 or the transmission block 210 will move without the linkage column 311, and the upward traction of the rope will cause the airbag cushion 320 of the cam 300 to rotate away from the rope winding seat 400. The cam 300 rotates clockwise, and the airbag cushion 320 on the cam 300 rotates close to the rope winding seat 400, clamping and stopping the rope, thereby achieving the effect of automatically locking the rope descent when the user is panicked. During the process of the cam 300 rotating clockwise to lock the rope, the rope will drive the binding mechanism 500 to operate, prompting the binding mechanism 500 to clamp and fix the rope from one end of the rope, and cooperate with the cam 300 and the rope winding seat 400 to clamp and fix the other end of the rope, thereby achieving the effect of synchronously stopping the rope transmission from both ends of the rope, which is beneficial to improving the braking effect of the rope descent.

[0020] like Figure 1 and Fig. 9As shown, in this embodiment, a torsion spring 111 is sleeved between the connecting shaft 110 and the handle 200, a rivet 140 fixed to the rope winding seat 400 is inserted and fixed to the outer side of the fixed side plate 100, and a slot 220 movably engaged with the rivet 140 is opened at the bottom of the handle 200.

[0021] In this embodiment, when the handle 200 is released after being rotated, the torsion elastic force of the torsion spring 111 will be released and rebound, thereby enabling the handle 200 to automatically rotate to the position of the instruction manual. Figure 1 In the initial position state, the rivet 140 firmly fixes the rope winding seat 400 on the fixed side plate 100, and can limit the rotation range of the handle 200 to prevent a large range of rotation under the elastic force of the torsion spring 111.

[0022] like Figure 1 , Figure 2 and Fig. 9 As shown, in this embodiment, a fan-shaped notch is opened on the inner side of the handle 200 for the transmission block 210 to move, a hanging hole block 130 is fixed at one end of the fixed side plate 100, a fixed shaft 150 is plugged and fixed between the hanging hole block 130 and the fixed side plate 100, and a slot 2 620 that is movably engaged with the fixed shaft 150 is fixed at one end of the movable side plate 600.

[0023] In this embodiment, the fan-shaped notch can control the rotation range of the handle 200 by limiting the rotation range of the transmission block 210. The hanging hole block 130 is convenient for connection with the rope on the user. The slot 2 620 is connected to the fixed shaft 150 so that the movable side panel 600 can rotate to a suitable position and stay there.

[0024] like Figure 2 and Figure 5 As shown, in this embodiment, a wire groove for the rope to be wound and passed is opened on the outer side of the cam 300, and a fixed shaft 2 330 fixedly connected to the fixed side plate 100 is rotatably inserted at the eccentric position of the cam 300, a torsion spring 2 331 is sleeved between the fixed shaft 2 330 and the cam 300, and a protrusion is provided at the position of the cam 300 near the airbag cushion 320.

[0025] In this embodiment, in the initial state where the cam 300 is not installed with a rope, the cam 300 is in a state of rotating away from the rope winding seat 400 under the elastic force of the torsion spring 2 331, so that the user can first open the movable side panel 600 and then wrap the rope around the outer side of the cam 300. The protrusion is convenient for cooperating with the rope winding seat 400 to clamp and fix the rope when the cam 300 rotates clockwise.

[0026] like Figure 6As shown, in this embodiment, two connecting pipes 450 that are both connected to the airbag body 410 are fixed to the bottom of the rope winding seat 400. One connecting pipe 450 is connected and fixed to the hose 430, and a plurality of counterweight balls 431 are sleeved and fixed on the outer side of the hose 430.

[0027] In this embodiment, gas can be injected into one connecting pipe 450 to expand the volume of the airbag body 410. Excessive gas inside the airbag body 410 can also be transported into the airbag pad 320 through the other connecting pipe 450 to increase the volume of the protruding part of the cam 300. Thus, before installing a thinner rope, the gap between the rope winding seat 400 and the cam 300 is smaller, meeting the requirement that the thinner rope can be clamped by the protruding part of the cam 300 and the rope winding seat 400 in a short time later. A valve is installed in series inside the connecting pipe 450, and the opening and closing of the valve are regulated according to actual needs. The hose 430 is used to connect the airbag pad 320 and the airbag body 410, facilitating the simultaneous volume expansion of the two. The counterweight balls 431 can keep the longer hose 430 in a hanging state, preventing the hose 430 from winding between the cam 300 and the rope winding seat 400. At the same time, the counterweight balls 431 will move outside the rope when contacting the rope, preventing the hose 430 from being pressed by the rope and causing blockage of the hose 430.

[0028] As Figure 7 and Figure 8 As shown, in this embodiment, the restraint mechanism 500 includes a C-shaped plate 510 that is fixedly embedded with the extension plate 310. One end of the extension plate 310 is fixed with a guide rail 511. Two first wedge-shaped blocks 520 are slidably clamped on the outer side of the guide rail 511. An arc-shaped block 530 is slidably connected to the top surface of the C-shaped plate 510. Two second wedge-shaped blocks 531 that are respectively传动连接 with the corresponding first wedge-shaped blocks 520 are fixed to the top surface of the arc-shaped block 530. An arc-shaped support plate is fixed to the bottom of the C-shaped plate 510. A rectangular hole one for the arc-shaped block 530 to pass through is opened in the middle of the arc-shaped support plate. A telescopic airbag 540 is fixed to the top of the arc-shaped support plate. One end of the telescopic airbag 540 is connected and fixed with an air delivery pipe 541 for delivering gas to the airbag pad 320. A spring telescopic rod 550 is fixed to the bottom of the C-shaped plate 510. The output end of the spring telescopic rod 550 is fixed with a circular plate, and the circular plate is fixedly connected with the arc-shaped block 530.

[0029] In this embodiment, during the clockwise rotation of the cam 300, the arc-shaped block 530 on the extension plate 310 of the cam 300 rotates towards the rope direction, causing the rope to push the arc-shaped block 530 to move towards the guide rail 511 direction. Furthermore, the two second wedge-shaped blocks 531 are squeezed to drive the two first wedge-shaped blocks 520 to move closer to each other, and the two first wedge-shaped blocks 520 clamp and fix the top of the rope. This facilitates fixing the bottom end of the rope using the cam 300 and the rope winding base 400 while using the restraint mechanism 500 to restrain and fix the top of the rope. During the movement of the arc-shaped block 530, the expansion airbag 540 will be synchronously squeezed, causing the gas inside the expansion airbag 540 to be transported to the airbag pad 320 through the air delivery pipe 541 and the air delivery groove, enabling the airbag pad 320 to fully press the rope onto the rope winding base 400. When the handle 200 drives the cam 300 to rotate counterclockwise later and the rope descends between the cam 300 and the rope winding base 400, the arc-shaped block 530 loses the thrust of the rope. Under the reset elastic force of the existing component, the spring telescopic rod 550, the expansion airbag 540 will be re-expanded for standby. During the expansion process of the expansion airbag 540, the gas inside the airbag pad 320 is sucked, reducing the protrusion of the cam 300 and facilitating the rope to pass through the outside of the cam 300.

[0030] As Figure 8 shown, in this embodiment, two chutes respectively slidably connected to the corresponding second wedge-shaped blocks 531 are provided on the top surface of the C-shaped plate 510. A first reset spring 521 is fixed between the two first wedge-shaped blocks 520. An air delivery groove communicating with the air delivery pipe 541 is provided inside the cam 300 on the side close to the extension plate 310, and the end of the air delivery groove背离 the air delivery pipe 541 communicates with the airbag pad 320.

[0031] In this embodiment, the chute enables the second wedge-shaped block 531 to linearly slide on the C-shaped plate 510, thereby driving the two first wedge-shaped blocks 520 to move closer to each other. The air delivery groove is provided inside the cam 300 for transporting the gas inside the expansion airbag 540 to the inside of the airbag pad 320. The first reset spring 521 is in a compressed state when the two first wedge-shaped blocks 520 move closer to each other. During the expansion process of the expansion airbag 540, since the second wedge-shaped block 531 no longer squeezes the first wedge-shaped block 520, the elastic force of the first reset spring 521 drives the two first wedge-shaped blocks 520 to move away from each other along the guide rail 511 for standby.

[0032] Embodiment 2, on the basis of Embodiment 1, in order to prevent the movable side plate 600 from automatically opening when it is combined outside the fixed side plate 100.

[0033] As Fig.10As shown, in the present embodiment, the switch assembly 700 includes a toggle block 710, which is slidably connected to the outer side of the cover 610, one end of the toggle block 710 is fixed with a movable column slidably connected to the cover 610, an L-shaped block 720 is slidably abutted against the outer side of the movable side plate 600, a corner position of the L-shaped block 720 is fixedly connected to the movable column, a locking block 721 is fixed to the bottom of the L-shaped block 720, a rectangular hole 2 is provided at the bottom of the movable side plate 600 for the locking block 721 to move, a reset spring 2 730 is fixed between the L-shaped block 720 and the cover 610, and the elastic force of the reset spring 2 730 causes the L-shaped block 720 to return to its initial position after movement.

[0034] In the initial state, when the rope needs to be installed outside the cam 300, the toggle block 710 is slid upward to make the L-shaped block 720 and the locking block 721 leave one end of the fixed shaft 2 330. Without the obstruction of the fixed shaft 2 330, the movable side plate 600 can be rotated open to expose the cam 300, and then follow the instructions to install the rope outside the cam 300. Figure 2 Just install the rope. After installing the rope, slide the toggle block 710 upwards again so that the locking block 721 does not contact the fixed shaft 330 during the closing process of the movable side panel 600. After the movable side panel 600 is closed, release the toggle block 710. Under the action of the restoring elastic force of the restoring spring 730, the L-shaped block 720 moves with the locking block 721 to one side of the fixed shaft 330. At this time, the fixed shaft 330 again prevents the movable side panel 600 from automatically opening.

[0035] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An adjustable speed descending device, characterized in that: include: A fixed side plate (100), wherein a first connecting shaft (110) and a second connecting shaft (120) are respectively fixed at two ends of the fixed side plate (100); A handle (200) is rotatably sleeved on one end of the connecting shaft (110) penetrating the fixed side plate (100), and one end of the handle (200) is embedded with a rotatable transmission block (210); A cam (300) is used to press the rope buffer downward, the cam (300) is eccentrically rotatably connected to the middle of the fixed side plate (100), an extension plate (310) is fixed to the outside of the cam (300), a linkage column (311) is fixed at one end of the extension plate (310) and is intermittently abutted against the transmission block (210), and an airbag cushion (320) is fixed to the outside of the cam (300); A rope winding seat (400) is fixedly connected to the second connecting shaft (120), an airbag body (410) is embedded and fixed inside the rope winding seat (400), a movable pressing plate (420) that is slidably engaged with the rope winding seat (400) is fixed outside the airbag body (410), and a hose (430) is fixed between the airbag body (410) and the airbag cushion (320); A restraining mechanism (500) is fixed on the inner side of the extension plate (310) and is used to clamp one end of the fixing rope and deliver gas to the airbag cushion (320) and the airbag body (410); A movable side plate (600) is rotatably connected to the second connecting shaft (120) and is used to protect the cam (300), the rope winding seat (400) and the restraining mechanism (500); a sealing cover (610) is fixed to the outer side of the movable side plate (600); The switch assembly (700) is arranged outside the movable side plate (600) and is used to control the opening and closing of the movable side plate (600).

2. The adjustable speed descending device according to claim 1, characterized in that: A torsion spring (111) is sleeved between the connecting shaft (110) and the handle (200), a rivet (140) fixed to the rope winding seat (400) is inserted and fixed to the outer side of the fixed side plate (100), and a slot (220) movably engaged with the rivet (140) is provided at the bottom of the handle (200).

3. The adjustable speed descending device according to claim 1, characterized in that: A fan-shaped notch is provided on the inner side of the handle (200) for the transmission block (210) to move. A hanging hole block (130) is fixed to one end of the fixed side plate (100). A fixed shaft 1 (150) is plugged and fixed between the hanging hole block (130) and the fixed side plate (100). A clamping groove 2 (620) is fixed to one end of the movable side plate (600) and is movably clamped to the fixed shaft 1 (150).

4. The adjustable speed descending device according to claim 1, characterized in that: The outer side of the cam (300) is provided with a wire groove for winding and passing a rope, and the cam (300) is rotatably plugged with a second fixed shaft (330) fixedly connected to the fixed side plate (100) at an eccentric position, and a second torsion spring (331) is sleeved between the second fixed shaft (330) and the cam (300), and a protrusion is provided at a position of the cam (300) close to the airbag cushion (320).

5. The adjustable speed descending device according to claim 1, characterized in that: Two connecting pipes (450) are fixed to the bottom of the rope winding base (400), both of which are communicated with the airbag body (410). One of the connecting pipes (450) is fixedly communicated with the hose (430), and a plurality of counterweight balls (431) are fixedly sleeved outside the hose (430).

6. The adjustable speed descending device according to claim 1, characterized in that: The restraint mechanism (500) includes: A C-shaped plate (510) is fixedly embedded with the extension plate (310), and a guide rail (511) is fixed to one end of the extension plate (310); Two first wedge blocks (520) are both slidably clamped with the guide rail (511); An arc-shaped block (530) is slidably connected with the C-shaped plate (510), and two second wedge blocks (531) respectively传动连接 with the corresponding first wedge blocks (520) are fixed to the top surface of the arc-shaped block (530); An arc-shaped support plate is fixed to the bottom of the C-shaped plate (510), and a rectangular hole one for the arc-shaped block (530) to pass through is opened in the middle of the arc-shaped support plate; A telescopic airbag (540) is fixed to the top of the arc-shaped support plate, and an air delivery pipe (541) for delivering air to the airbag pad (320) is fixedly communicated with one end; A spring telescopic rod (550) is fixedly connected with the bottom of the C-shaped plate (510), and a circular plate is fixed to the output end of the spring telescopic rod (550), and the circular plate is fixedly connected with the arc-shaped block (530).

7. The adjustable speed descending device according to claim 6, characterized in that: Two chutes respectively slidably connected with the corresponding second wedge blocks (531) are opened on the top surface of the C-shaped plate (510), a first return spring (521) is fixed between the two first wedge blocks (520), and an air delivery groove communicated with the air delivery pipe (541) is opened inside the cam (300) near the extension plate (310), and the end of the air delivery groove背离 the air delivery pipe (541) is communicated with the airbag pad (320).

8. The adjustable speed descending device according to claim 1, characterized in that: The switch assembly (700) includes: A toggle block (710) is slidably connected with the outside of the cover (610), and a moving column slidably connected with the cover (610) is fixed to one end of the toggle block (710); An L-shaped block (720) is slidably attached to the outside of the moving side plate (600), the corner position of the L-shaped block (720) is fixedly connected with the moving column, a locking block (721) is fixed to the bottom of the L-shaped block (720), and a rectangular hole two for the locking block (721) to move is opened at the bottom of the moving side plate (600); A second return spring (730) is fixed between the L-shaped block (720) and the cover (610), and the elastic force of the second return spring (730) makes the moved L-shaped block (720) return to the initial position.

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