An automatic rope fall arrester

Abstract

This invention relates to the field of rope safety device technology, specifically to an automatic rope fall arrester, which includes a housing, a rope-gripping wheel disposed inside the housing, a gap between the rope-gripping wheel and the housing, a connecting assembly connected to the housing, a first wheel cover fixedly connected to one side of the rope-gripping wheel, a second wheel cover connected to the other side of the rope-gripping wheel, a plurality of lever shafts fixedly connected to the first wheel cover, the lever shafts being arranged in an array along the circumference of the rope-gripping wheel, each lever shaft being rotatably connected to a ratchet lever, each ratchet lever being fixedly connected to a lever spring, a hanging groove being opened at the other end of the ratchet lever, a hook being fixedly connected to the end of the lever spring away from the ratchet lever, the hook being able to engage in the hanging groove of an adjacent ratchet lever, an internal toothed ring being connected inside the rope-gripping wheel, when the rope-gripping wheel rotates rapidly, the hook separates from the hanging groove, and the ratchet lever engages on the internal toothed ring. This application has the effect of making the fall arrester less prone to damage when gripping the rope, effectively improving its strength.

Description

Technical Field

[0001] This invention relates to the field of rope safety device technology, and specifically to an automatic rope fall arrester. Background Technology

[0002] Currently, fall arresters, also known as fall stop devices or differential speed devices, are protective products. They can quickly brake and lock falling objects within a limited distance, making them suitable for cargo hoisting, protecting the lives of ground personnel and preventing damage to the hoisted workpiece. In the event of a sudden fall, the fall arrester will lock the rope, preventing the user from continuing to fall.

[0003] A current invention patent with publication number CN103920254B protects a fall arrest safety device for stopping rope movement, comprising: a rigid body having a rope placement groove for receiving the rope; a safety system designed to rotate between a closed position and an open position, the closed position cooperating with the rope by stopping it at the bottom of the rope placement groove in the event of a fall, the open position for releasing a passage to the rope placement groove for loading or unloading the rope; and a controller for transferring the safety system from the closed position to the open position and vice versa, the control device including a pair of clamping plates that can be simultaneously actuated in the open position to stabilize and lock the safety system in the open position, the two clamping plates being arranged side by side on a transverse pivot pin integrated with the pivoting safety system.

[0004] In the above-mentioned technical solutions, the current rope fall arrestor is subjected to a huge instantaneous impact when it gets stuck on the rope, which can easily damage the fall arrestor or even cause the fall arrestor to fail to get stuck on the rope, resulting in an accident. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an automatic rope fall arrester.

[0006] The technical solution of this invention is as follows:

[0007] This invention provides an automatic rope fall arrester, comprising a housing, an inner rope-gripping wheel, and a gap between the rope-gripping wheel and the housing for rope passage. The housing is connected to a connecting assembly that allows the rope-gripping wheel to rotate within the housing. A first wheel cover is fixedly connected to one side of the rope-gripping wheel, and a second wheel cover is connected to the other side. Multiple lever shafts are fixedly connected to the first wheel cover, arranged in an array along the circumference of the rope-gripping wheel. Each lever shaft is rotatably connected to a ratchet lever. A lever spring is fixedly connected to one end of each ratchet lever near its lever shaft, and a slot is formed at the other end of each ratchet lever. A hook is fixedly connected to the end of the lever spring away from the ratchet lever, and the hook can engage with the slot of an adjacent ratchet lever. An internal toothed ring is connected inside the rope-gripping wheel. When the rope-gripping wheel rotates rapidly, the hook separates from the slot, and the ratchet lever engages with the internal toothed ring.

[0008] The beneficial effects achieved by this invention are as follows: When the rope fall arrester falls rapidly, the rope-gripping wheel rotates rapidly, and the ratchet block, affected by centrifugal force, causes the hook to separate from the hanging slot. The ratchet block is thrown away by centrifugal force, and the end of the ratchet block away from the block shaft inserts into the inner toothed ring, fixing the relative position of the inner toothed ring and the ratchet block, thereby locking the rope-gripping wheel and preventing it from rotating relative to the outer shell. The rope is caught by the rope-gripping wheel, thus achieving the fall arrest function. The fall arrester of this application achieves fall arrest by simultaneously locking the inner toothed ring with multiple ratchet blocks, effectively increasing the strength of the fall arrester, reducing the possibility of fall arrester damage, and lowering the probability of accidents. After the fall arrester has completed one fall arrest process, the user can rotate the ratchet block to reset it, allowing the hook to be hooked back into the hanging slot for reuse. This allows the fall arrester to be reused, and the reset method is simple and easy to operate.

[0009] Furthermore, the connecting assembly includes a rotating shaft rotatably connected to the outer casing, a second wheel cover rotatably connected to the rotating shaft, a connecting rod of the outer casing rotatably connected to the rotating shaft, a central shaft fixedly connected to the other end of the connecting rod, a central groove opened in the center of the first wheel cover, a central shaft rotatably connected to the central groove, and a central shaft rotatably connected to the center of the second wheel cover.

[0010] With the above scheme, the rotating shaft is used to connect with structures such as webbing, thereby connecting with the safety device on the user's body, and the rope-grabbing wheel rotates around the central axis.

[0011] Furthermore, when the fall arrester falls, the rope-grabbing wheel rotates counterclockwise, and the ratchet blocks are all set in the counterclockwise direction. The inner toothed ring includes a fixed ring that is fixedly connected to the second wheel cover. The fixed ring has multiple arc-shaped grooves. The inner toothed ring has a groove at one end of each arc-shaped groove that matches the ratchet block. The ratchet block can be engaged in the groove.

[0012] With the above solution, the ratchet block will engage in the groove when the rope-gripping wheel rotates counterclockwise, but when the rope-gripping wheel rotates clockwise, the ratchet block can disengage from the groove, allowing the rope-gripping wheel to rotate clockwise, so that the user can move upward along the rope.

[0013] Furthermore, an arc-shaped guard plate is fixedly connected to the second wheel cover at the position below the rope-grabbing wheel, and the arc-shaped guard plate has multiple process grooves.

[0014] With the above solution, the curved guard plate can protect the user and rope from accidental contact with the rope-grabbing wheel and scratches caused by the sharp spikes on the surface of the rope-grabbing wheel, and the process groove is used to reduce the weight of the curved guard plate.

[0015] Furthermore, a switch groove is provided on the second wheel cover, and a first groove is provided on the outer shell at the position corresponding to the switch groove. A sliding switch is slidably connected in the first groove and the switch groove. A switch spring is fixedly connected in the switch groove. The switch spring is set along the length of the switch groove and abuts against the sliding switch. In the natural state of the switch spring, the sliding switch is located at the end of the switch groove near the rotating shaft.

[0016] When the slide switch slides to one end of the switch groove near the rotating shaft, the slide switch slides to one end of the first groove near the rotating shaft, and the gap width is slightly smaller than the rope diameter;

[0017] The outer casing has a second groove at the end near the first groove and away from the rotating shaft. The second groove is connected to the first groove and is arc-shaped. When the sliding switch slides to the other end of the switch groove, the sliding switch slides to the end of the second groove away from the first groove, and the gap width is greater than the rope diameter. When the sliding switch slides to the end of the second groove away from the first groove, the sliding switch is engaged at the end of the second groove away from the first groove.

[0018] With the above solution, when the user needs to pass the rope through the fall arrestor, they can move the sliding switch. When the sliding switch is engaged in the second slot, the gap widens, allowing the user to easily pass the rope. Furthermore, because the sliding switch is engaged, the rope-gripping wheel will not return to its original position, eliminating the need for the user to maintain its position. After attaching the rope, the user moves the sliding switch back to the first slot, and the switch spring pushes the sliding switch back to its original position, thus pushing the rope-gripping wheel back into place and allowing it to engage with the rope. This design facilitates user operation while ensuring the rope-gripping wheel is firmly engaged with the rope, guaranteeing the fall arrestor's effectiveness.

[0019] Furthermore, a connecting rod is rotatably connected to the outer shell near the gap. A first retaining ring is fixedly connected to the end of the connecting rod away from the outer shell. The first retaining ring has a first retaining groove for the rope to pass through. A second retaining ring is rotatably connected to the first retaining ring. The second retaining ring has a second retaining groove for the rope to pass through. The first retaining ring and the second retaining ring can jointly engage the rope. The first retaining ring has a first through groove. A first abutting plate is slidably connected to the first retaining ring in the first through groove. The first abutting plate can extend into the center of the first retaining ring.

[0020] With the above solution, the user can rotate the connecting rod to allow the rope to pass through the first and second slots and lock into the first and second retaining rings. Rotating the second retaining ring changes the position of the second slot, preventing the rope from separating from the first and second retaining rings. At this point, the user can grip the first retaining ring to press down on the first abutment plate, causing the first abutment plate to press against the rope. This greatly increases the friction between the fall arrester and the rope, further reducing the possibility of the fall arrester continuing to fall and effectively enhancing safety.

[0021] Furthermore, the second retaining ring has a second through groove, and a second abutting plate is slidably connected to the second retaining ring in the second through groove. The second abutting plate can extend into the center of the second retaining ring, and a fixing pin is slidably connected to one end of the second abutting plate extending out of the second retaining ring. The first abutting plate has an insertion hole at the position corresponding to the fixing pin, and the fixing pin can be inserted into the insertion hole. When the fixing pin is inserted into the insertion hole, the first through groove and the second through groove are not connected.

[0022] With the above solution, the user can grip the first and second shackles to simultaneously press down the first and second abutment plates. The second abutment plate presses against the rope, increasing the friction between them and further enhancing safety. The user can insert a fixing pin into the socket to fix the relative positions of the first and second shackles, preventing the second shackle from accidentally rotating and separating the rope from both shackles.

[0023] Furthermore, the first abutting plate is fixedly connected to the first outer plate at one end extending from the first retaining ring, and the second abutting plate is fixedly connected to the second outer plate at one end extending from the first retaining ring. Both the side of the first outer plate away from the first abutting plate and the side of the second outer plate away from the second abutting plate are fixedly connected with external anti-slip textures. The first abutting plate is fixedly connected to the first inner plate at one end extending into the first retaining ring, and the second abutting plate is fixedly connected to the second inner plate at one end extending into the second retaining ring. Both the side of the first inner plate away from the first abutting plate and the side of the second inner plate away from the second abutting plate are fixedly connected with internal anti-slip textures.

[0024] Through the above design, the first and second outer plates prevent the user from pushing the first or second clamping plate into the first or second retaining ring, while increasing the contact area between the user and the first and second clamping plates, making it easier for the user to apply force. The first and second inner plates prevent the first or second clamping plate from sliding out of the first or second retaining ring, while also increasing the contact area with the rope, and the internal anti-slip texture enhances the friction with the rope.

[0025] Furthermore, a rotating ring is rotatably connected to the central shaft, and an extension plate, the same number as the ratchet blocks, is fixedly connected to the rotating ring. Each extension plate is fixedly connected to a pull rope, and the other end of each pull rope is fixedly connected to the end of the nearest ratchet block away from the block axis. A fixed post is slidably connected to the rotating ring, and the central shaft has a insertion hole. The fixed post can be inserted into the insertion hole. When the fixed post is inserted into the insertion hole, the pull rope exerts a force on the end of the ratchet block away from the block axis towards the central shaft.

[0026] With the above solution, after the ratchet blocks are separated from the pull spring by centrifugal force, the user can rotate the rotating ring to allow the extension plate to pull the pull rope back to the original position of all the ratchet blocks at the same time. Then, the position of the rotating ring is fixed with the fixing post, and the user can hang the hooks into the hanging slots one by one. Then, the fixing post is pulled out from the insertion hole to reset the fall arrestor. The operation is simple, labor-saving and quick.

[0027] Furthermore, a limiting ring is fixedly connected to one end of the fixed post that extends into the insertion hole. The diameter of the insertion hole is equal to the diameter of the limiting ring. An annular groove is provided on the rotating ring at the position corresponding to the limiting ring. The diameter of the annular groove is equal to the diameter of the limiting ring.

[0028] The above scheme uses a limiting ring to prevent the fixed post from separating from the rotating ring.

[0029] An automatic rope fall arrester of the present invention has the following advantages:

[0030] 1. When the rope fall arrester falls rapidly, the rope-gripping wheel rotates quickly. The ratchet blocks, under centrifugal force, cause the hook to separate from the slot. The ratchet blocks are thrown apart by the centrifugal force, and the end of the ratchet block away from the shaft inserts into the inner toothed ring, fixing the relative position of the inner toothed ring and the ratchet block. This locks the rope-gripping wheel, preventing it from rotating relative to the outer casing. The rope is then caught by the rope-gripping wheel, thus achieving the fall arrest function. This fall arrester uses multiple ratchet blocks simultaneously locking the inner toothed ring to achieve fall arrest, effectively increasing the strength of the fall arrester, reducing the possibility of damage, and lowering the probability of accidents. After one fall arrest, the user can rotate the ratchet blocks to reset, allowing the hook to re-engage in the slot for reuse. This makes the fall arrester reusable, and the reset method is simple and easy to operate. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0032] Figure 2 This is a top view of the overall structure of Embodiment 1 of the present invention;

[0033] Figure 3 This is a schematic diagram of the rope-grabbing wheel structure according to Embodiment 1 of the present invention;

[0034] Figure 4 This is an exploded view of the slide switch according to Embodiment 1 of the present invention;

[0035] Figure 5 This is a schematic diagram of the ratchet block, internal toothed ring, and switch spring according to Embodiment 1 of the present invention;

[0036] Figure 6 This is an overall schematic diagram of Embodiment 2 of the present invention;

[0037] Figure 7 This is an exploded view of the first and second retaining rings in Embodiment 2 of the present invention;

[0038] Figure 8 This is a schematic diagram of the rotating ring, extension plate, and pull rope in Embodiment 2 of the present invention;

[0039] Figure 9 This is a cross-sectional view of the fixing post and the limiting ring in Embodiment 2 of the present invention.

[0040] In the diagram, 1 is the outer casing; 11 is the connecting assembly; 111 is the rotating shaft; 112 is the outer casing connecting rod; 113 is the central shaft; 1131 is the insertion hole; 114 is the central groove; 12 is the first sliding groove; 13 is the second sliding groove; 14 is the sliding switch; 15 is the connecting rod; 16 is the first retaining ring; 161 is the first retaining groove; 162 is the first through groove; 163 is the first abutting plate; 1631 is the insertion hole; 1632 is the first outer plate; 1633 is the outer anti-slip texture; 1634 is the first inner plate; 1635 is the inner anti-slip texture; 17 is the second retaining ring; 171 is the second retaining groove; 172 is the second through groove; 173 is the second abutting plate; 1731 is the fixing pin. ; 1732, Second outer plate; 1733, Second inner plate; 18, Rotating ring; 181, Extension plate; 182, Pull rope; 183, Fixed post; 1831, Limiting ring; 184, Annular groove; 2, Rope grabbing wheel; 21, Gap; 22, First wheel cover; 23, Second wheel cover; 231, Internal toothed ring; 2311, Fixed ring; 2312, Arc groove; 2313, Groove; 232, Arc guard plate; 2321, Process groove; 233, Switch slide groove; 2331, Switch compression spring; 24, Toggle shaft; 25, Ratchet toggle; 251, Hanging groove; 26, Toggle spring; 261, Hook; 3, Webbing connecting shaft; 31, Connecting rod. Detailed Implementation

[0041] To facilitate understanding of the present invention by those skilled in the art, specific embodiments of the present invention will be described below with reference to the accompanying drawings.

[0042] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] Example 1

[0045] This invention provides an automatic rope fall arrester, such as... Figure 1 and Figure 2 As shown, the device includes a housing 1, inside which a rope-gripping wheel 2 is disposed, with a gap 21 between the rope-gripping wheel 2 and the housing 1 for rope passage. A first wheel cover 22 is fixedly connected to one side of the rope-gripping wheel 2, and a second wheel cover 23 is connected to the other side of the rope-gripping wheel 2. A connecting assembly 11 is connected to the housing 1 to allow the rope-gripping wheel 2 to rotate within the housing 1.

[0046] like Figure 1 and Figure 3 As shown, the connecting assembly 11 includes a rotating shaft 111 rotatably connected to the outer casing 1, a second wheel cover 23 rotatably connected to the rotating shaft 111, an outer casing connecting rod 112 rotatably connected to the rotating shaft 111, a central shaft 113 fixedly connected to the other end of the outer casing connecting rod 112, a central groove 114 formed in the center of the first wheel cover 22, the central shaft 113 rotatably connected within the central groove 114, and the central shaft 113 rotatably connected to the center of the second wheel cover 23. Connecting rods 31 are fixedly connected to both ends of the rotating shaft 111, and a webbing connecting shaft 3 is fixedly connected to the other end of the two connecting rods 31. The rotating shaft 111 is used to connect with structures such as webbing, thereby connecting with the safety device worn by the user. The rope-grabbing wheel 2 rotates around the central shaft 113.

[0047] like Figure 1 and Figure 2 As shown, an arc-shaped guard plate 232 is fixedly connected to the second wheel cover 23 at the position below the rope-gripping wheel 2. The arc-shaped guard plate 232 has multiple process grooves 2321. Since the surface of the rope-gripping wheel 2 has sharp spikes, the arc-shaped guard plate 232 can protect the user and rope from accidental contact with the rope-gripping wheel 2 and from being scratched by the spikes on the surface of the rope-gripping wheel 2. The process grooves 2321 are used to reduce the weight of the arc-shaped guard plate 232.

[0048] like Figure 3 and Figure 4As shown, a switch groove 233 is provided on the second wheel cover 23, and a first groove 12 is provided on the outer shell 1 at the position corresponding to the switch groove 233. A slide switch 14 is slidably connected in both the first groove 12 and the switch groove 233. A switch spring 2331 is fixedly connected in the switch groove 233. The switch spring 2331 is arranged along the length of the switch groove 233 and abuts against the slide switch 14. In its natural state, the slide switch 14 is located at the end of the switch groove 233 near the rotating shaft 111. When the slide switch 14 slides to the end of the switch groove 233 near the rotating shaft 111, the slide switch 14 slides to the end of the first groove 12 near the rotating shaft 111, and the width of the gap 21 is slightly smaller than the diameter of the rope. The outer casing 1 has a second slide groove 13 at the end near the first slide groove 12 away from the rotating shaft 111. The second slide groove 13 is connected to the first slide groove 12 and is arc-shaped. When the sliding switch 14 slides to the other end of the switch slide groove 233, the sliding switch 14 slides to the end of the second slide groove 13 away from the first slide groove 12, and the width of the gap 21 is greater than the diameter of the rope. When the sliding switch 14 slides to the end of the second slide groove 13 away from the first slide groove 12, the sliding switch 14 is engaged with the end of the second slide groove 13 away from the first slide groove 12. When the user needs to pass the rope through the fall arrester, they can move the sliding switch 14. When the sliding switch 14 is engaged in the second groove 13, the gap 21 widens, allowing the user to easily pass the rope. Since the sliding switch 14 is engaged, the rope-gripping wheel 2 will not return to its original position, eliminating the need for the user to maintain its position. After attaching the rope, the user moves the sliding switch 14 back to the first groove 12. The switch spring 2331 pushes the sliding switch 14 back to its original position, thus pushing the rope-gripping wheel 2 back to its original position, allowing it to engage with the rope. This design facilitates user operation while ensuring the rope-gripping wheel 2 firmly engages with the rope, guaranteeing the fall arrester's effectiveness.

[0049] like Figure 3 and Figure 5As shown, multiple lever shafts 24 are fixedly connected to the first wheel cover 22. The lever shafts 24 are arranged in an array along the circumference of the rope-gripping wheel 2. Each lever shaft 24 is rotatably connected to a ratchet lever 25. A lever tension spring 26 is fixedly connected to one end of the ratchet lever 25 near the lever shaft 24. A hanging groove 251 is opened at the other end of the ratchet lever 25. A hook 261 is fixedly connected to the end of the lever tension spring 26 away from the ratchet lever 25. The hook 261 can be engaged in the hanging groove 251 of the adjacent ratchet lever 25. An internal toothed ring 231 is connected inside the rope-gripping wheel 2. When the rope-gripping wheel 2 rotates rapidly, the hook 261 separates from the hanging groove 251, and the ratchet lever 25 is engaged in the internal toothed ring 231. When the fall arrester falls, the rope-grabbing wheel 2 rotates counterclockwise, and the ratchet blocks 25 are all set in the counterclockwise direction. The inner toothed ring 231 includes a fixing ring 2311 fixedly connected to the second wheel cover 23. The fixing ring 2311 has multiple arc-shaped grooves 2312. The inner toothed ring 231 has a groove 2313 that matches the ratchet block 25 at one end of each arc-shaped groove 2312 in the counterclockwise direction. The ratchet block 25 can be engaged in the groove 2313. When the rope fall arrestor falls rapidly, the rope-gripping wheel 2 rotates rapidly. The ratchet block 25, under centrifugal force, causes the hook 261 to separate from the groove 251. The ratchet block 25 is thrown away by the centrifugal force, and the end of the ratchet block 25 away from the lever shaft 24 inserts into the inner toothed ring 231, fixing the relative position of the inner toothed ring 231 and the ratchet block 25. This locks the rope-gripping wheel 2, preventing it from rotating relative to the outer casing 1. The rope is then caught by the rope-gripping wheel 2, thus achieving the fall arrest function. When the rope-gripping wheel 2 rotates counterclockwise, the ratchet block 25 engages in the groove 2313. However, when the rope-gripping wheel 2 rotates clockwise, the ratchet block 25 can disengage from the groove 2313, allowing the rope-gripping wheel 2 to rotate clockwise, enabling the user to move upwards along the rope.

[0050] The present invention provides an automatic rope fall arrester with the following implementation principle: When the rope fall arrester falls rapidly, the rope-gripping wheel 2 rotates rapidly. The ratchet block 25, under the influence of centrifugal force, causes the hook 261 to separate from the hanging groove 251. The ratchet block 25 is thrown away by the centrifugal force, and the end of the ratchet block 25 away from the lever shaft 24 inserts into the inner toothed ring 231, fixing the relative position of the inner toothed ring 231 and the ratchet block 25, thereby locking the rope-gripping wheel 2 and preventing relative rotation between the rope-gripping wheel 2 and the outer casing 1. The rope is caught by the rope-gripping wheel 2, thus achieving the fall arrest function. The fall arrester of this application achieves fall arrest by having multiple ratchet blocks 25 simultaneously lock the inner toothed ring 231, effectively increasing the strength of the fall arrester, reducing the possibility of damage, and lowering the probability of accidents. After the fall arrester has completed one fall arrest process, the user can rotate the ratchet block 25 to reset it, allowing the hook 261 to be hooked back into the hanging groove 251, thus enabling the fall arrester to be reused. The reset method is simple and easy to operate.

[0051] Example 2

[0052] An automatic rope fall arrester, such as Figure 6 and Figure 7 As shown, the difference from Embodiment 1 is that a connecting rod 15 is rotatably connected to the outer shell 1 near the gap 21. A first retaining ring 16 is fixedly connected to the end of the connecting rod 15 away from the outer shell 1. The first retaining ring 16 has a first retaining groove 161 for the rope to pass through. A second retaining ring 17 is rotatably connected to the first retaining ring 16. The second retaining ring 17 has a second retaining groove 171 for the rope to pass through. The first retaining ring 16 and the second retaining ring 17 can jointly engage the rope. The first retaining ring 16 has a first through groove 162. A first abutting plate 163 is slidably connected to the first retaining ring 16 corresponding to the first through groove 162. The first abutting plate 163 can extend into the center of the first retaining ring 16. The second retaining ring 17 has a second through groove 172. A second abutting plate 173 is slidably connected to the second retaining ring 17 in the second through groove 172. The second abutting plate 173 can extend into the center of the second retaining ring 17. A fixing pin 1731 is slidably connected to one end of the second abutting plate 173 extending out of the second retaining ring 17. A insertion hole 1631 is opened at the position of the first abutting plate 1631 corresponding to the position of the fixing pin 1731. The fixing pin 1731 can be inserted into the insertion hole 1631. When the fixing pin 1731 is inserted into the insertion hole 1631, the first through groove 162 and the second through groove 172 are not connected. The user can rotate the connecting rod 15 to allow the rope to pass through the first slot 161 and the second slot 171 and be secured in the first retaining ring 16 and the second retaining ring 17. Rotating the second retaining ring 17 changes the position of the second slot 171, preventing the rope from separating from the first retaining ring 16 and the second retaining ring 17. At this time, the user can grip the first retaining ring 16 to press the first abutting plate 163, which presses against the rope, greatly increasing the friction between the fall arrester and the rope, thereby further reducing the possibility of the fall arrester continuing to fall and effectively enhancing safety. The user can also grip the first retaining ring 16 and the second retaining ring 17 to simultaneously press the first abutting plate 163 and the second abutting plate 173. The second abutting plate 173 presses against the rope, further increasing the friction between the two, and further enhancing safety. The user can insert the fixing pin 1731 into the insertion hole 1631 to fix the relative position of the first retaining ring 16 and the second retaining ring 17, preventing the second retaining ring 17 from accidentally rotating and causing the rope to separate from the first retaining ring 16 and the second retaining ring 17.

[0053] like Figure 6 and Figure 7As shown, the first abutting plate 163 extends out of the first retaining ring 16 and is fixedly connected to the first outer plate 1632. The second abutting plate 173 extends out of the first retaining ring 16 and is fixedly connected to the second outer plate 1732. Both the side of the first outer plate 1632 away from the first abutting plate 163 and the side of the second outer plate 1732 away from the second abutting plate 173 are fixedly connected to the outer anti-slip texture 1633. The first abutting plate 163 extends into the first retaining ring 16 and is fixedly connected to the first inner plate 1634. The second abutting plate 173 extends into the second retaining ring 17 and is fixedly connected to the second inner plate 1733. Both the side of the first inner plate 1634 away from the first abutting plate 163 and the side of the second inner plate 1733 away from the second abutting plate 173 are fixedly connected to the inner anti-slip texture 1635. The first outer plate 1632 and the second outer plate 1732 prevent the user from pushing the first clamping plate 163 or the second clamping plate 173 into the first retaining ring 16 or the second retaining ring 17, while increasing the contact area between the user and the first clamping plate 163 and the second clamping plate 173, making it easier for the user to apply force. The first inner plate 1634 and the second inner plate 1733 prevent the first clamping plate 163 or the second clamping plate 173 from sliding out of the first retaining ring 16 or the second retaining ring 17, while increasing the contact area with the rope, and enhancing the friction with the rope in conjunction with the inner anti-slip texture 1635.

[0054] like Figure 8 and Figure 9 As shown, a rotating ring 18 is rotatably connected to the central shaft 113. An extension plate 181, the same number as the ratchet blocks 25, is fixedly connected to the rotating ring 18. Each extension plate 181 is fixedly connected to a pull rope 182. The other end of each pull rope 182 is fixedly connected to the end of the nearest ratchet block 25 away from the block shaft 24. A fixing post 183 is slidably connected to the rotating ring 18. The central shaft 113 has an insertion hole 1131. The fixing post 183 can be inserted into the insertion hole 1131. When the fixing post 183 is inserted into the insertion hole 1131, the pull rope 182 exerts a force on the end of the ratchet block 25 away from the block shaft 24 towards the central shaft 113. A limiting ring 1831 is fixedly connected to one end of the fixed post 1831, which extends into the insertion hole 1131. The diameter of the insertion hole 1131 is equal to the diameter of the limiting ring 1831. An annular groove 184 is provided on the rotating ring 18 at the position corresponding to the limiting ring 1831, and the diameter of the annular groove 184 is equal to the diameter of the limiting ring 1831. When the ratchet blocks 25 are separated from the pull spring 26 by centrifugal force, the user can rotate the rotating ring 18 to allow the extension plate 181 to drive the pull rope 182 to pull all the ratchet blocks 25 back to their original positions simultaneously. Then, the fixed post 183 is used to fix the position of the rotating ring 18, and the user can then hang the hooks 261 into the hanging grooves 251 one by one. Finally, the fixed post 183 is pulled out from the insertion hole 1131 to reset the fall arrestor. The operation is simple, labor-saving, and quick. The limiting ring 1831 is used to prevent the fixed post 183 from separating from the rotating ring 18.

[0055] The embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An automatic rope fall arrester, comprising a housing (1), a rope-gripping wheel (2) disposed inside the housing (1), and a gap (21) between the rope-gripping wheel (2) and the housing (1) for rope passage, characterized in that: The outer casing (1) is connected to a connecting assembly (11) that allows the rope-grabbing wheel (2) to rotate within the outer casing (1); a connecting rod (15) is rotatably connected to the outer casing (1) near the gap (21), and a first retaining ring (16) is fixedly connected to the end of the connecting rod (15) away from the outer casing (1). The first retaining ring (16) has a first retaining groove (161) for the rope to pass through, and a second retaining ring (17) is rotatably connected to the first retaining ring (16). The second retaining ring (17) has a second retaining groove (171) for the rope to pass through. The first retaining ring (16) and the second retaining ring (17) are connected to the ... The two snap rings (17) can jointly engage the rope. The first snap ring (16) has a first through groove (162). The first snap ring (16) is slidably connected to the first through groove (162) with a first abutment plate (163). The first abutment plate (163) can extend into the center of the first snap ring (16). The rope-grabbing wheel (2) is fixedly connected to one side with a first wheel cover (22). The rope-grabbing wheel (2) is connected to the other side with a second wheel cover (23). The second wheel cover (23) has a switch groove (233). The outer shell (1) is positioned at the position corresponding to the switch groove (233). A first slide groove (12) is provided, and a slide switch (14) is slidably connected in the first slide groove (12) and the switch slide groove (233). A switch spring (2331) is fixedly connected in the switch slide groove (233), and the switch spring (2331) is arranged along the length direction of the switch slide groove (233). Multiple toggle shafts (24) are fixedly connected on the first wheel cover (22). The toggle shafts (24) are arranged in an array along the circumferential direction of the rope gripping wheel (2). Each toggle shaft (24) is rotatably connected to a ratchet toggle (25). The ratchet toggle (25) is close to One end of the lever shaft (24) is fixedly connected to a lever spring (26), and the other end of the ratchet lever (25) is provided with a hanging groove (251). The end of the lever spring (26) away from the ratchet lever (25) is fixedly connected to a hook (261). The hook (261) can be engaged in the hanging groove (251) of the adjacent ratchet lever (25). The rope-gripping wheel (2) is connected to an internal toothed ring (231). When the rope-gripping wheel (2) rotates rapidly, the hook (261) separates from the hanging groove (251), and the ratchet lever (25) is engaged in the internal toothed ring (231).

2. The automatic rope fall arrester according to claim 1, characterized in that: The connecting assembly (11) includes a rotating shaft (111) rotatably connected to the outer shell (1), a second wheel cover (23) rotatably connected to the rotating shaft (111), a connecting rod (112) of the outer shell rotatably connected to the rotating shaft (111), a central shaft (113) fixedly connected to the other end of the connecting rod (112), a central groove (114) is provided in the center of the first wheel cover (22), the central shaft (113) is rotatably connected in the central groove (114), and the central shaft (113) is rotatably connected to the center of the second wheel cover (23).

3. An automatic rope fall arrester according to claim 1, characterized in that: When the fall arrester falls, the rope wheel (2) rotates counterclockwise, and the ratchet blocks (25) are all set in the counterclockwise direction. The inner tooth ring (231) includes a fixing ring (2311) fixedly connected to the second wheel cover (23). The fixing ring (2311) has multiple arc-shaped grooves (2312). The inner tooth ring (231) has a groove (2313) corresponding to the counterclockwise end of each arc-shaped groove (2312) to cooperate with the ratchet block (25). The ratchet block (25) can be engaged in the groove (2313).

4. An automatic rope fall arrester according to claim 1, characterized in that: The second wheel cover (23) is fixedly connected to an arc-shaped guard plate (232) at the position below the rope-grabbing wheel (2). The arc-shaped guard plate (232) has multiple process grooves (2321).

5. An automatic rope fall arrester according to claim 2, characterized in that: The switch spring (2331) abuts against the slide switch (14). In its natural state, the switch spring (2331) is located at the end of the switch groove (233) near the rotating shaft (111). When the sliding switch (14) slides to one end of the switch groove (233) near the rotating shaft (111), the sliding switch (14) slides to one end of the first groove (12) near the rotating shaft (111), and the gap (21) width is slightly smaller than the rope diameter; The outer casing (1) has a second groove (13) at the end near the first groove (12) away from the rotating shaft (111). The second groove (13) is connected to the first groove (12) and is arc-shaped. When the sliding switch (14) slides to the other end of the switch groove (233), the sliding switch (14) slides to the end of the second groove (13) away from the first groove (12), and the gap (21) is wider than the rope diameter. When the sliding switch (14) slides to the end of the second groove (13) away from the first groove (12), the sliding switch (14) is engaged with the end of the second groove (13) away from the first groove (12).

6. An automatic rope fall arrester according to claim 1, characterized in that: The second retaining ring (17) has a second through groove (172). The second retaining ring (17) is slidably connected to the second through groove (172). The second abutting plate (173) can extend into the center of the second retaining ring (17). The end of the second abutting plate (173) extending out of the second retaining ring (17) is slidably connected to a fixing pin (1731). The first abutting plate (163) has an insertion hole (1631) at the position corresponding to the fixing pin (1731). The fixing pin (1731) can be inserted into the insertion hole (1631). When the fixing pin (1731) is inserted into the insertion hole (1631), the first through groove (162) and the second through groove (172) are not connected.

7. An automatic rope fall arrester according to claim 6, characterized in that: The first abutting plate (163) is fixedly connected to the first outer plate (1632) at one end extending from the first retaining ring (16). The second abutting plate (173) is fixedly connected to the second outer plate (1732) at one end extending from the first retaining ring (16). Both the side of the first outer plate (1632) away from the first abutting plate (163) and the side of the second outer plate (1732) away from the second abutting plate (173) are fixedly connected with outer anti-slip textures (1633). The first abutting plate (163) is fixedly connected to the first inner plate (1634) at one end extending into the first retaining ring (16). The second abutting plate (173) is fixedly connected to the second inner plate (1733) at one end extending into the second retaining ring (17). Both the side of the first inner plate (1634) away from the first abutting plate (163) and the side of the second inner plate (1733) away from the second abutting plate (173) are fixedly connected with inner anti-slip textures (1635).

8. An automatic rope fall arrester according to claim 2, characterized in that: A rotating ring (18) is rotatably connected to the central shaft (113). An extension plate (181) of the same number as the ratchet blocks (25) is fixedly connected to the rotating ring (18). Each extension plate (181) is fixedly connected to a pull rope (182). The other end of each pull rope (182) is fixedly connected to the end of the closest ratchet block (25) away from the block shaft (24). A fixed post (183) is slidably connected to the rotating ring (18). The central shaft (113) has a insertion hole (1131). The fixed post (183) can be inserted into the insertion hole (1131). When the fixed post (183) is inserted into the insertion hole (1131), the pull rope (182) exerts a force on the end of the ratchet block (25) away from the block shaft (24) towards the central shaft (113).

9. An automatic rope fall arrester according to claim 8, characterized in that: The fixed post (183) extends into the insertion hole (1131) and is fixedly connected to the limiting ring (1831). The diameter of the insertion hole (1131) is equal to the diameter of the limiting ring (1831). The rotating ring (18) has an annular groove (184) at the position corresponding to the limiting ring (1831). The diameter of the annular groove (184) is equal to the diameter of the limiting ring (1831).

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