Rope descender

Abstract

The utility model provides a kind of rope descender, including for being connected on rope and can descend along rope descender main body;Descender main body includes shell assembly, swing frame, rope wheel and handle;The lower end of shell assembly is provided with heavy hole, swing frame and rope wheel are all arranged in the inboard of shell assembly, the lower end of swing frame is rotatably connected with shell assembly, and rope wheel is rotatably connected with the upper end of swing frame;The side of shell assembly is provided with support shaft, handle is rotatably connected with support shaft and is axially limited;Rope descender further includes turntable;Turntable is fixed with handle and can rotate relative to shell assembly with handle, the upper end of swing frame is provided with the convex part extending towards handle side, and shell assembly is provided with sliding hole for sliding for the convex part, and the edge of turntable is provided with one-way push structure;The utility model has the advantages of anti-panic structure simple.

Description

Technical Field

[0001] This utility model relates to the field of rescue equipment technology, and more specifically, to a rope descender. Background Technology

[0002] In activities such as rock climbing and rope rescue, a descender is a device attached to a rope to control the descent speed, ensuring the safe descent of climbers or rescuers. The descender works by controlling the descent speed through friction between the rope and the device. Users adjust the friction by changing the rope's path length, coefficient of friction, and angle within the device, thus controlling their descent speed. However, current technologies place high demands on operators; improper operation leading to a sudden descent could have disastrous consequences. Therefore, Chinese Patent Publication No.: CN22350481 3U disclosed an anti-panic descender, in which the handle assembly's handle controls the first rotating shaft to reciprocate along the slide groove of the fixed side plate via a connecting rod. One end of the connecting rod is also connected to a first spring. The first spring, in conjunction with the connecting rod, is used for the automatic reset of the connecting rod after panic, preventing the descender from going out of control due to an emergency or excessive operation of the handle. However, in the above descender structure, in order to avoid the descender going out of control due to excessive operation of the handle, the handle assembly, which consists of the handle, connecting rod, first spring, handle rotating shaft, and connecting rod rotating shaft, has the disadvantage of complex structure. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a rope descender that has the advantages of simple anti-panic structure.

[0004] This utility model provides a rope descender, including a descender body for connecting to a rope and enabling descent along the rope; the descender body includes a housing assembly, a swing frame, a rope pulley, and a handle; the lower end of the housing assembly is provided with a load-bearing hole, the swing frame and the rope pulley are both located inside the housing assembly, the lower end of the swing frame is rotatably connected to the housing assembly, and the rope pulley is unidirectionally rotatably connected to the upper end of the swing frame; the rope is guided by a grooved wheel rotatably connected to the housing assembly, passes around the rope pulley, and is then delivered from a friction groove located on the housing assembly; a support shaft is provided on one side of the housing assembly, and the handle is rotatably connected to the support shaft. The rope descender also includes a turntable; the turntable is coaxially sleeved on a support shaft located inside the handle, the turntable is fixed to the handle and can rotate with the handle relative to the housing assembly, the upper end of the swing frame is provided with a protrusion extending towards the handle, the housing assembly is provided with a sliding hole for the protrusion to pass through and slide, and a one-way pushing structure is provided at the edge of the turntable; when the handle drives the turntable to rotate clockwise, the one-way pushing structure is used to push the protrusion to make the swing frame swing relative to the housing assembly; when the handle drives the turntable to rotate counterclockwise, the one-way pushing structure can pass over the protrusion and return to its original position with the rotation of the turntable.

[0005] By adopting the above-described structure, when the handle gradually drives the turntable to rotate clockwise, the one-way pushing structure can gradually push the protrusion to cause the swing frame to gradually deflect relative to the shell assembly. At this time, the gap between the rope wheel and the inner wall of the shell assembly can gradually increase, thus increasing the descent speed of the descender and the personnel. If the personnel excessively rotate the handle, causing the descent speed of the descender and the personnel to be too fast and causing panic, the one-way pushing structure can disengage from the protrusion and release the pushing state on the protrusion. At this time, the rope wheel and the swing frame can deflect and reset in the opposite direction under the action of the rope tension, that is, the gap between the rope wheel and the inner wall of the shell assembly returns to the initial state, and the friction between the rope, the rope wheel, and the shell assembly increases, so that the descender can be suspended on the rope again, thereby achieving the purpose of preventing panic. The anti-panic structure composed of the handle, one-way pushing structure, and protrusion in this invention has the advantage of simple structure compared with the anti-panic structure in existing descenders.

[0006] In one possible implementation, the one-way push structure includes a paddle and a first torsion spring; one end of the first torsion spring and the paddle are coaxially rotatably connected to the edge of the turntable, one end of the first torsion spring abuts against a stop post located on the paddle, and the other end of the first torsion spring is engaged with the inner wall of the handle. A stop block is provided at the edge of the turntable, which abuts against the other end of the paddle and causes the other end of the paddle to protrude from the turntable in the radial direction of the turntable.

[0007] In one possible implementation, the protrusion is cylindrical, the sliding hole is an arc-shaped hole, and the outer surface of the paddle forms a first arc-shaped surface; when the handle drives the turntable to rotate clockwise, the first arc-shaped surface is used to cooperate with the protrusion to slide, so that the paddle pushes the protrusion to slide along the extension direction of the sliding hole.

[0008] In one possible implementation, the unidirectional pushing structure includes a push block and a spring rod; the middle part of the push block is rotatably connected to the edge of the turntable, one end of the push block is rotatably connected to one end of the spring rod, the other end of the spring rod is rotatably connected to the turntable, the other end of the push block protrudes from the turntable in the radial direction, a step is provided at the edge of the turntable, and the push block abuts against the step under the elastic force of the spring rod.

[0009] In one possible implementation, the inner wall of the protrusion forms an arc surface; when the handle drives the turntable to rotate clockwise, the other end of the lever is used to slide in conjunction with the arc surface so that the lever pushes the protrusion to slide along the extension direction of the sliding hole.

[0010] In one possible implementation, the side of the paddle block facing the step forms a second arc-shaped surface.

[0011] In one possible implementation, a baffle is coaxially fixed to the outer end of the support shaft. The baffle is embedded in the outer end of the handle and rotates with the handle. The baffle is used to restrict the handle from axially disengaging from the support shaft. A second torsion spring is coaxially sleeved on the support shaft. The two ends of the second torsion spring are respectively engaged with the outer end of the support shaft and the inner sidewall of the handle. The second torsion spring is used to drive the handle to rotate counterclockwise relative to the housing assembly to reset.

[0012] In one possible implementation, the housing assembly has an annular protrusion on the side facing the handle, the annular protrusion is inserted into the end of the handle, and the outer peripheral wall of the annular protrusion is in contact with and rotatably engaged with the inner peripheral wall of the handle. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first three-dimensional structure of a rope descender. Figure 2 A partially exploded 3D structural diagram of a rope descender; Figure 3 A schematic diagram of the main structure of a rope descender after removing part of the housing components and connecting it to the rope; Figure 4 This is a schematic diagram of the second three-dimensional structure of the rope descender; Figure 5 A partially exploded three-dimensional structural diagram of the rope descender using the technical solution of Embodiment 1; Figure 6 The first state diagram after removing the handle when using the technical solution of Embodiment 1 for the rope descender; Figure 7 The second state diagram after removing the handle when using the technical solution of Embodiment 1 for the rope descender; Figure 8 A three-dimensional structural diagram of the rope descender after removing the handle, using the technical solution of Embodiment 2. Figure 9 The first state diagram after removing the handle when using the technical solution of Embodiment 2 for the rope descender; Figure 10 The second state diagram is shown when the rope descender adopts the technical solution of Embodiment 2 and the handle is removed. Detailed Implementation

[0014] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0015] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0016] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0017] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Example 1 See Figures 1-7As shown in the figure, this application discloses a rope descender, including a descender body 2 for connecting to a rope 1 and being able to descend along the rope 1; the descender body 2 includes a housing assembly 21, a swing frame 22, a rope pulley 23, and a handle 24; the lower end of the housing assembly 21 is provided with a load hanging hole 211, the swing frame 22 and the rope pulley 23 are both disposed inside the housing assembly 21, the lower end of the swing frame 22 is rotatably connected to the housing assembly 21, and the rope pulley 23 is unidirectionally rotatably connected to the upper end of the swing frame 22, the rope 1 is guided by a grooved wheel 25 rotatably connected to the housing assembly 21 and passes around the rope pulley 23 before being drawn from the friction groove 212 located on the housing assembly 21. The cable descender includes a turntable 3. The turntable 3 is coaxially sleeved on the support shaft 213 located inside the handle 24. The turntable 3 is fixed to the handle 24 and can rotate relative to the housing assembly 21 with the handle 24. The upper end of the swing frame 22 is provided with a protrusion 221 extending toward the handle 24. The housing assembly 21 is provided with a sliding hole 214 for the protrusion 221 to pass through and slide. The edge of the turntable 3 is provided with a one-way pushing structure. When the handle 24 drives the turntable 3 to rotate clockwise, the one-way pushing structure is used to push the turntable 3. The protrusion 221 causes the swing frame 22 to oscillate relative to the housing assembly 21; when the handle 24 drives the turntable 3 to rotate counterclockwise, the one-way pushing structure can pass over the protrusion 221 and return to its original position as the turntable 3 rotates; when using this utility model, the rope is guided by the grooved wheel rotatably connected to the housing assembly and is sent out from the friction groove located on the housing assembly after passing around the rope wheel, and the personnel are attached to the load-bearing hanging hole through the safety buckle. When the personnel do not operate the handle, the descender and the personnel can be suspended on the rope; when the personnel operate the handle, so that the handle gradually drives the turntable to rotate clockwise, the one-way pushing structure can gradually push the protrusion so that the swing frame gradually oscillates relative to the housing assembly. During swaying, the gap between the rope pulley and the inner wall of the housing assembly gradually increases, allowing the descender and personnel to begin descending at an increased speed. If personnel excessively turn the handle, causing the descender and personnel to descend too quickly and panic, the one-way pushing structure disengages from the protrusion and releases its pushing action. At this point, the rope pulley and swing frame can reverse and reset under the tension of the rope, restoring the gap between the rope pulley and the inner wall of the housing assembly to its initial state. This increases the friction between the rope, rope pulley, and housing assembly, allowing the descender to suspend itself again on the rope, thus preventing panic.

[0019] See you again Figures 5-7As shown, the unidirectional pushing structure includes a paddle 4 and a first torsion spring 5; the first torsion spring 5 and one end of the paddle 4 are coaxially rotatably connected to the edge of the turntable 3. One end of the first torsion spring 5 abuts against the abutment post 41 located on the paddle 4, and the other end of the first torsion spring 5 is engaged with the inner wall of the handle 24. An abutment block 31 is provided at the edge of the turntable 3, which abuts against the other end of the paddle 4 and causes the other end of the paddle 4 to protrude from the turntable 3 in the radial direction. With this structure, when the handle drives the turntable to rotate clockwise, the paddle can gradually push the protrusion to make the swing frame swing relative to the housing assembly (the protrusion can slide along the extension direction of the sliding hole). At this time, the rope wheel The gap between the rope and the inner wall of the housing assembly can gradually increase (the friction between the rope and the pulley and the inner wall of the housing assembly gradually decreases), meaning the descent speed of the descender and the personnel can be increased. If the personnel excessively turn the handle, causing the descender and personnel to descend too quickly and panic, that is, when the lever passes the protrusion, the lever can release the pushing state on the protrusion. At this time, the pulley and the swing frame can deflect and reset in the opposite direction under the action of the rope tension, that is, the gap between the pulley and the inner wall of the housing assembly returns to its initial state, and the friction between the rope and the pulley and the housing assembly increases, so that the descender is suspended on the rope again, thus achieving the purpose of preventing personnel panic; see again Figure 7 As shown, when the paddle passes over the protrusion and the handle drives the turntable to rotate counterclockwise, the paddle can overcome the elastic force of the first torsion spring and rotate relative to the turntable. At this time, during the counterclockwise rotation of the turntable, the paddle can pass over the protrusion. After the paddle has completely passed over the protrusion, the paddle can rotate back to its original position under the action of the first torsion spring, and the other end of the paddle can rest against the abutment block again.

[0020] The protrusion 221 is cylindrical, the sliding hole 214 is an arc-shaped hole, and the outer surface of the lever 4 forms a first arc-shaped surface 42. When the handle 24 drives the turntable 3 to rotate clockwise, the first arc-shaped surface 42 is used to slide in cooperation with the protrusion 221, so that the lever 4 pushes the protrusion 221 to slide along the extension direction of the sliding hole 214. With this structure, when the handle drives the turntable to rotate clockwise, under the cooperation and sliding action of the first arc-shaped surface and the cylindrical protrusion, the protrusion can be reliably made to slide gradually along the extension direction of the sliding hole, that is, it can ensure that the gap between the rope wheel and the inner wall of the housing assembly can gradually increase (the friction between the rope and the rope wheel and the inner wall of the housing assembly gradually decreases), that is, it can make the descent speed of the descender and the personnel gradually increase.

[0021] A baffle 8 is coaxially fixed to the outer end of the support shaft 213. The baffle 8 is embedded in the outer end of the handle 24 and rotates with the handle 24. The baffle 8 is used to prevent the handle 24 from axially disengaging from the support shaft 213. A second torsion spring is coaxially sleeved on the support shaft 213. The two ends of the second torsion spring are respectively engaged with the outer end of the support shaft 213 and the inner side wall of the handle 24. The second torsion spring is used to drive the handle 24 to rotate counterclockwise relative to the housing assembly 21 to reset. With this structure, the baffle can reliably block the handle under the action of the baffle to prevent the handle from axially disengaging from the support shaft. Under the action of the second torsion spring, when the handle is released, the second torsion spring can reliably drive the handle to rotate counterclockwise relative to the housing assembly to reset.

[0022] The housing assembly 21 has an annular protrusion 215 on the side facing the handle 24. The annular protrusion 215 is inserted into the end of the handle 24. The outer peripheral wall of the annular protrusion 215 is in contact with and rotates with the inner peripheral wall of the handle 24. By adopting this structure, dust can be effectively prevented from entering the inner cavity of the handle through the gap between the housing assembly and the handle. Furthermore, since the outer peripheral wall of the annular protrusion is in contact with and rotates with the inner peripheral wall of the handle, the coaxiality of the handle when rotating relative to the support shaft can be guaranteed, thereby improving the reliability and stability of the handle when rotating.

[0023] Example 2 See Figures 8-10 As shown, unlike Embodiment 1, the unidirectional pushing structure includes a lever 6 and a spring rod 7. The middle part of the lever 6 is rotatably connected to the edge of the turntable 3, one end of the lever 6 is rotatably connected to one end of the spring rod 7, the other end of the spring rod 7 is rotatably connected to the turntable 3, and the other end of the lever 6 protrudes from the turntable 3 in the radial direction. A step 32 is provided at the edge of the turntable 3, and the lever 6 abuts against the step 32 under the elastic force of the spring rod 7. With this structure, when the handle drives the turntable to rotate clockwise, the lever abuts against the step under the elastic force of the spring rod, that is, the lever can gradually push the protrusion to make the swing frame swing relative to the housing assembly (the protrusion can slide along the extension direction of the sliding hole). At this point, the gap between the rope pulley and the inner wall of the housing assembly can gradually increase (the friction between the rope and the rope pulley and the inner wall of the housing assembly gradually decreases), meaning the descent speed of the descender and the personnel can increase. If the personnel excessively turn the handle, causing the descent speed of the descender and the personnel to be too fast and causing panic, that is, when the lever passes the protrusion, the lever can release the pushing state of the protrusion. At this time, the rope pulley and the swing frame can deflect and reset in the opposite direction under the action of the rope tension, that is, the gap between the rope pulley and the inner wall of the housing assembly returns to its initial state, that is, the friction between the rope and the rope pulley and the housing assembly increases, so that the descender is suspended on the rope again, thereby achieving the purpose of preventing panic; see again Figure 10As shown, when the lever passes the protrusion and the handle drives the turntable to rotate counterclockwise, the lever can overcome the elastic force of the spring rod and rotate relative to the turntable. At this time, during the counterclockwise rotation of the turntable, the lever can pass the protrusion. After the lever has completely passed the protrusion, the lever can rotate back to its original position under the elastic force of the spring rod, that is, the lever can rest against the step again.

[0024] The inner wall of the protrusion 221 forms an arc surface 222. When the handle 24 drives the turntable 3 to rotate clockwise, the other end of the lever 6 is used to slide in cooperation with the arc surface 222, so that the lever 6 pushes the protrusion 221 to slide along the extension direction of the sliding hole 214. With this structure, when the handle drives the turntable to rotate clockwise, under the sliding action of the other end of the lever and the arc surface, the protrusion can be reliably made to slide gradually along the extension direction of the sliding hole, that is, it can ensure that the gap between the rope wheel and the inner wall of the housing assembly can gradually increase (the friction between the rope and the rope wheel and the inner wall of the housing assembly gradually decreases), that is, the descent speed of the descender and the personnel can be gradually increased.

[0025] The side of the lever 6 facing the step 32 forms a second arc-shaped surface 61. With this structure, when the lever passes over the protrusion and the handle drives the turntable to rotate counterclockwise, the second arc-shaped surface can cooperate with the outer wall of the protrusion for guidance, so that the protrusion can reliably drive the lever to rotate relative to the turntable.

[0026] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rope descender, comprising a descender body (2) for connection to a rope (1) and for descending along the rope (1); the descender body (2) comprises a housing assembly (21), a swing frame (22), a rope pulley (23), and a handle (24); the lower end of the housing assembly (21) is provided with a load-bearing hole (211), the swing frame (22) and the rope pulley (23) are both disposed inside the housing assembly (21), and the lower end of the swing frame (22) is connected to the housing. The assembly (21) is rotatably connected, the rope pulley (23) is unidirectionally rotatably connected to the upper end of the swing frame (22), the rope (1) is guided by the grooved wheel (25) rotatably connected to the housing assembly (21) and after passing around the rope pulley (23), it is sent out from the friction groove (212) located on the housing assembly (21); a support shaft (213) is provided on one side of the housing assembly (21), and the handle (24) is rotatably connected to the support shaft (213) and axially limited; characterized in that: The rope descender also includes a turntable (3); the turntable (3) is coaxially sleeved on a support shaft (213) located inside the handle (24). The turntable (3) is fixed to the handle (24) and can rotate with the handle (24) relative to the housing assembly (21). The upper end of the swing frame (22) is provided with a protrusion (221) extending toward the handle (24). The housing assembly (21) is provided with a sliding hole (214) for the protrusion (221) to pass through and slide. The edge of the turntable (3) is provided with a one-way pushing structure. When the handle (24) drives the turntable (3) to rotate clockwise, the one-way pushing structure is used to push the protrusion (221) to make the swing frame (22) swing relative to the housing assembly (21). When the handle (24) drives the turntable (3) to rotate counterclockwise, the one-way pushing structure can pass over the protrusion (221) and reset with the rotation of the turntable (3).

2. The rope descender according to claim 1, characterized in that: The one-way push structure includes a paddle (4) and a first torsion spring (5); one end of the first torsion spring (5) and the paddle (4) are coaxially rotatably connected to the edge of the turntable (3), one end of the first torsion spring (5) abuts against the abutment post (41) located on the paddle (4), and the other end of the first torsion spring (5) is engaged with the inner wall of the handle (24). An abutment block (31) is provided at the edge of the turntable (3), and the abutment block (31) is used to abut against the other end of the paddle (4) and make the other end of the paddle (4) protrude from the turntable (3) in the radial direction of the turntable (3).

3. The rope descender according to claim 2, characterized in that: The protrusion (221) is cylindrical, the sliding hole (214) is an arc-shaped hole, and the outer side of the paddle (4) forms a first arc-shaped surface (42). When the handle (24) drives the turntable (3) to rotate clockwise, the first arc-shaped surface (42) is used to cooperate with the protrusion (221) to slide, so that the paddle (4) pushes the protrusion (221) to slide along the extension direction of the sliding hole (214).

4. The rope descender according to claim 1, characterized in that: The unidirectional pushing structure includes a push block (6) and a spring rod (7); the middle part of the push block (6) is rotatably connected to the edge of the turntable (3), one end of the push block (6) is rotatably connected to one end of the spring rod (7), the other end of the spring rod (7) is rotatably connected to the turntable (3), the other end of the push block (6) protrudes from the turntable (3) in the radial direction, and a step (32) is provided at the edge of the turntable (3). The push block (6) abuts against the step (32) under the elastic force of the spring rod (7).

5. The rope descender according to claim 4, characterized in that: The inner wall of the protrusion (221) forms an arc surface (222); when the handle (24) drives the turntable (3) to rotate clockwise, the other end of the lever (6) is used to slide in cooperation with the arc surface (222) so that the lever (6) pushes the protrusion (221) to slide along the extension direction of the sliding hole (214).

6. The rope descender according to claim 4, characterized in that: The pusher block (6) forms a second arc-shaped surface (61) on the side facing the step (32).

7. The rope descender according to any one of claims 1-6, characterized in that: A baffle (8) is coaxially fixed on the outer end of the support shaft (213). The baffle (8) is embedded in the outer end of the handle (24) and rotates with the handle (24). The baffle (8) is used to restrict the handle (24) from axially disengaging from the support shaft (213). A second torsion spring is coaxially sleeved on the support shaft (213). The two ends of the second torsion spring are respectively engaged with the outer end of the support shaft (213) and the inner side wall of the handle (24). The second torsion spring is used to drive the handle (24) to rotate counterclockwise relative to the housing assembly (21) to reset.

8. The rope descender according to any one of claims 1-6, characterized in that: The housing assembly (21) has an annular protrusion (215) on the side facing the handle (24). The annular protrusion (215) is inserted into the end of the handle (24). The outer peripheral wall of the annular protrusion (215) is in contact with and rotates with the inner peripheral wall of the handle (24).

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