A fall arrestor

Abstract

The application discloses a kind of anti-falling device, including body and briquetting assembly;Body is equipped with installation cavity and guide rail passage, guide rail passage is located installation cavity side and both are communicated;Briquetting assembly includes first briquetting, second briquetting, briquetting axle, big pin shaft and small pin shaft, briquetting axle is located in installation cavity and both ends are fixed on the opposite inner side wall of body, first briquetting is rotatably connected with briquetting axle, big pin shaft is rotatably connected at least one of first briquetting and second briquetting and rotatably or fixedly connected with the other, small pin shaft is fixedly connected with first briquetting and second briquetting, and one end of second briquetting is exposed outside installation cavity;When force is applied to the exposed end of second briquetting, it rotates around briquetting axle together, so that the end of first briquetting towards guide rail passage is close to or away from, and small pin shaft is broken, and first briquetting and second briquetting are relatively rotated until abutting after small pin shaft is broken.The application can effectively solve the problem of instantaneous impact force generated during traditional braking and the problem of easy injury to workers.

Description

Technical Field

[0001] This invention relates to the field of fall arrestor technology, and more specifically, to a fall arrestor. Background Technology

[0002] Fall arresters are typically used during high-altitude operations and are installed on metal wires. If a worker accidentally falls from a height, the fall arrester can quickly lock onto the wire, preventing further descent and ensuring the worker's safety. However, most fall arresters currently used in high-altitude operations employ traditional rigid braking structures. During the fall braking process, this rigid braking can generate instantaneous impact forces, potentially causing unnecessary injury to workers. Summary of the Invention

[0003] To address the shortcomings of existing technologies, this invention provides a fall arrestor to solve the problem that instantaneous impact forces are easily generated during the fall braking process in high-altitude operations, thereby causing unnecessary injury to high-altitude workers.

[0004] This invention discloses a fall arrestor, comprising a body, the body having an installation cavity and a guide rail channel, the guide rail channel being located on one side of the installation cavity and the two communicating with each other; and A pressure block assembly; the pressure block assembly includes a first pressure block, a second pressure block, a pressure block shaft, a large pin, and a small pin; the pressure block shaft is located in the mounting cavity and its two ends are fixed to the opposite first and second walls of the body; the first pressure block is rotatably connected to the pressure block shaft; the large pin is rotatably connected to at least one of the first and second pressure blocks; the other of the first and second pressure blocks is rotatably or fixedly connected to the large pin; the small pin is fixedly connected to the first and second pressure blocks; the end of the second pressure block facing away from the first pressure block is exposed outside the mounting cavity; When force is applied to the end of the second pressure block that is exposed outside the mounting cavity, the first pressure block and the second pressure block rotate together around the pressure block shaft. The first pressure block moves closer to or away from the guide rail channel towards one end of the guide rail channel. When the small pin breaks, the second pressure block rotates towards the side of the first pressure block that is away from the guide rail channel until the second pressure block and the first pressure block come into contact.

[0005] According to one embodiment of the present invention, a boss is provided on the first pressing block, and the boss has a large pin hole and a small pin hole; a slot is provided on the second pressing block facing one end of the first pressing block, and a large connecting hole and a small connecting hole are provided on the slot; wherein, the boss is embedded in the slot, and the large connecting hole is aligned with the large pin hole, the small connecting hole is aligned with the small pin hole, the large pin is inserted into the large connecting hole and the large pin hole, and the small pin is inserted into the small connecting hole and the small pin hole.

[0006] According to one embodiment of the present invention, a locking part is further included. The locking part includes a locking protrusion, a pressing rod assembly, and a baffle assembly. The locking protrusion is disposed on the side of the first pressing block and has a through hole. The pressing block shaft passes through the through hole and is fixedly connected to the locking protrusion. The first pressing block also has a rotating groove. The pressing rod assembly passes through the rotating groove. One end of the pressing rod assembly is located in the mounting cavity and is movably disposed on the inner side wall of the first wall. The other end of the pressing rod assembly protrudes out of the second wall. The baffle assembly is disposed in the mounting cavity and is located on the same side of the first pressing block as the locking protrusion. The end of the baffle assembly near the pressing rod assembly is rotatably disposed on the inner side wall of the second wall. A limiting protrusion extends from the side of the baffle assembly facing the locking protrusion and extends into the gap between the locking protrusion and the pressing rod assembly.

[0007] According to one embodiment of the present invention, the pressing rod assembly includes a pressing rod and a spring member; the pressing rod passes through the rotating groove, one end of the pressing rod is movably connected to the inner side wall of the first wall, and the other end of the pressing rod passes through the second wall; the spring member is located in the mounting cavity and is sleeved on the outer wall of the pressing rod.

[0008] According to one embodiment of the present invention, the pressing rod includes a pressing head and a rod body; the pressing head is provided with a limiting groove around its circumference, the outer diameter of one wall of the limiting groove is D1, and the outer diameter of the other wall of the limiting groove is D2; a through hole is provided on the second wall, the diameter of the through hole is D3, D1≤D3<D2; the pressing head is inserted into the through hole, the second wall is embedded in the limiting groove, and the wall of the limiting groove with an outer diameter D2 is located in the mounting cavity; one end of the rod body is movably connected to the inner side wall of the first wall, and the other end of the rod body is connected to the pressing head; a spring is sleeved on the outer wall of the rod body, one end of the spring abuts against the pressing head, and the other end abuts against the inner side wall of the first wall; an annular limiting platform is also provided at the end of the rotating groove facing the limiting groove with an outer diameter D2, the inner diameter of the annular limiting platform is D4, the outer diameter of the annular limiting platform is D5, D5≥D2>D4.

[0009] According to one embodiment of the present invention, the baffle assembly includes a baffle, a fixing pin, and a return torsion spring; the fixing pin is disposed in the mounting cavity, and its two ends are respectively fixed to the inner sidewalls of the first wall and the second wall opposite to the main body; the baffle is disposed in the mounting cavity, one end of the baffle is rotatably connected to the fixing pin, and a limiting protrusion extends out from the side of the baffle facing the locking protrusion; the return torsion spring is sleeved on the fixing pin, one end of the return torsion spring is fixed to the inner sidewall of the first wall, and the other end of the return torsion spring is fixed to the baffle.

[0010] According to one embodiment of the present invention, a movable groove is also provided on the top of the main body along the rotation direction of the baffle. The end of the baffle opposite to the one connected to the fixed pin is located in the movable groove. The baffle assembly also includes a handle and a limiting pin. The handle is fixed on the end of the baffle opposite to the one connected to the fixed pin. The limiting pin is provided at the end of the movable groove near the guide rail channel. A slot is also provided on the side of the baffle facing the limiting pin. When the baffle is rotated, the slot moves to abut against the limiting pin.

[0011] According to one embodiment of the present invention, a locking groove is also provided on the side of the baffle facing the first pressing block; wherein, when the baffle rotates along the movable groove toward the direction of approaching the first pressing block, the locking groove gradually engages with the locking protrusion.

[0012] According to one embodiment of the present invention, it further includes an insert, which is disposed in the guide rail channel and opposite to the mounting cavity; the first pressure block is also provided with a concave surface in the direction of the guide rail channel, and the distance between the end face of the concave surface and the pressure block shaft gradually increases along the counterclockwise direction.

[0013] According to one embodiment of the present invention, when the boss is inserted into the slot and the small pin fixes the first pressure block and the second pressure block, the end face of the boss facing the bottom of the slot forms a first rotation space with the bottom wall of the slot, and the end faces of the two slot walls respectively form a second rotation space with the end face of the boss connected to the first pressure block. The first rotation space and the second rotation space are located on the same side.

[0014] The beneficial effects of this application are as follows: When working at height, force is applied to the end of the second pressure block exposed outside the installation cavity. The first and second pressure blocks rotate together around the pressure block axis, causing the first pressure block to move away from the guide rail channel at one end, gradually increasing the gap between the first pressure block and the guide rail channel. The metal wire is then threaded through the gap between the guide rail channel and the end of the first pressure block facing the guide rail channel. Then, the second pressure block is released, and the first and second pressure blocks rotate together around the pressure block axis 23 under their own weight, causing the first pressure block to move closer to the guide rail channel at one end, making the first pressure block contact the surface of the metal wire. However, since there is no external force pulling the second pressure block down at this time, the force exerted by the first pressure block on the metal wire is very small, and the metal wire can still move freely along the guide rail channel, making it convenient for workers to carry fall arresters and move at height without affecting the operation. When a worker accidentally falls, the pulling force generated by the fall is applied to the end of the second pressure block exposed outside the mounting cavity. Since the first pressure block is rotatably connected to the pressure block shaft, and the small pin fixes the first and second pressure blocks, the pulling force generated during the fall will cause the first and second pressure blocks to rotate together around the pressure block shaft. The first pressure block continues to move closer to the guide rail channel, gradually reducing the gap between the first pressure block and the guide rail channel. In this way, the end of the first pressure block facing the guide rail channel will gradually come into contact with the metal wire in the guide rail channel, thereby clamping the metal wire in the guide rail channel, thus achieving emergency braking to prevent the falling person from continuing to fall.

[0015] Once the metal wire is clamped in the guide rail channel, the fall arrestor stops sliding down the wire and is brought to an emergency stop. The impact force generated by the emergency stop continuously squeezes the small pin. When the small pin reaches its limit, it breaks. Since the large pin is rotatably connected to at least one of the first and second pressure blocks, and the other of the first and second pressure blocks is rotatably or fixedly connected to the large pin, after the small pin breaks, under the pull of the worker's gravity, the second pressure block will continue to rotate around the large pin relative to the first pressure block until it rotates to the point where the second pressure block presses against the first pressure block. Under the pressure of the second pressure block against the first pressure block, the first pressure block still cooperates with the guide rail channel to clamp the metal wire. At the same time as the fall stops, the impact force is buffered by the rotation of the second pressure block, avoiding the violent impact caused by the lack of buffering in traditional rigid braking structures. This reduces the unnecessary injury caused by the impact force of emergency braking to workers at heights and ensures their safety. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a three-dimensional structural diagram of the fall arrestor in Example 1; Figure 2 This is a perspective view of the fall arrestor with its cover removed in Example 1; Figure 3 This is a three-dimensional structural diagram of the pressure block assembly in Embodiment 1; Figure 4 This is another three-dimensional structural diagram of the pressure block assembly in Embodiment 1; Figure 5 This is a three-dimensional view of the first and second pressure blocks after they rotate relative to each other by an angle α following the breakage of the small pin in Example 1. Figure 6 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the first position; Figure 7 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the second position; Figure 8 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the third position. Figure 9 This is a three-dimensional structural diagram of the first pressing block in Example 1; Figure 10 This is a three-dimensional structural diagram of the second pressing block in Example 1; Figure 11 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the first position in Embodiment 2; Figure 12 This is a perspective view of the fall arrestor in Embodiment 2 with the cover removed and the pressure block assembly in the first position; Figure 13 This is a three-dimensional structural diagram of the pressing rod assembly in Embodiment 2; Figure 14 This is a three-dimensional structural diagram of the baffle assembly in Embodiment 2; Figure 15 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the second position and the pressing rod assembly being pressed in Embodiment 2; Figure 16 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the second position and the pressing rod assembly being pressed, from another angle in Embodiment 2. Figure 17 for Figure 16 A magnified view of part A in the middle; Figure 18 This is a perspective view showing the positional fit between the locking parts when the pressure block assembly is in the second position after the cover of the fall arrestor is removed in Embodiment 2. Figure 19 This is a side view showing the positional engagement between the locking parts when the pressure block assembly is in the second position after the cover of the fall arrestor is removed in Embodiment 2. Figure 20This is a perspective view of the locking parts in the third position when the pressure block assembly of the fall arrestor is in the second embodiment after the cover is removed.

[0017] Explanation of reference numerals in the attached figures 1. Body; 101. First wall; 102. Second wall; 1020. Perforation; 103. Movable groove; 11. Mounting cavity; 12. Guide rail channel; 120. Groove; 13. Cover; 14. Shell; 2. Pressure block assembly; 201. First rotation space; 202. Second rotation space; 21. First pressure block; 211. Boss; 2111. Large pin hole; 2112. Small pin hole; 212. Rotation slot; 2120. Annular limiting platform; 22. Second pressure block; 220. Slot; 2201. Large connecting hole; 2202. Small connecting hole; 23. Pressure block shaft; 24. Large pin; 25. Small pin; 26. Rebound torsion spring; 3. Locking part; 31. Locking protrusion; 310. Through hole; 32. Press rod assembly; 321. Press rod; 3211. Press head; 32110. Limiting groove; 3212. Rod body; 322. Spring component; 33. Baffle assembly; 330. Limiting protrusion; 331. Baffle; 3311. Groove; 3312. Locking groove; 332. Fixing pin; 333. Return torsion spring; 334. Handle; 335. Limiting pin; 4. Inlay; 5. Roller shaft; 51. Bearing; 52. Roller. Detailed Implementation

[0018] The following drawings will disclose several embodiments of the present invention. For clarity, many practical details will be described in the following description. However, it should be understood that these practical details are not intended to limit the invention. That is, in some embodiments of the invention, these practical details are not essential. Furthermore, for the sake of simplicity, some conventional structures and components will be shown in the drawings in a simple schematic manner.

[0019] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0020] Furthermore, in this invention, the use of terms such as "first," "second," etc., is for descriptive purposes only and does not specifically refer to any order or sequence, nor is it intended to limit the invention. They are merely used to distinguish items or operations described using the same technical terms and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but only if they are feasible for those skilled in the art. If a combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0021] To further understand the invention's content, features, and effects, the following embodiments are provided, along with detailed descriptions in conjunction with the accompanying drawings: Example 1 like Figure 1 As shown, Figure 1 This is a three-dimensional structural diagram of the fall arrester in Embodiment 1. This embodiment provides a fall arrester, including a body 1 and a pressure block assembly 2. The body 1 is the main load-bearing structure, and it has an installation cavity 11 and a guide rail channel 12. The guide rail channel 12 is located on one side of the installation cavity 11. The installation cavity 11 is used to accommodate the pressure block assembly 2 and provides sufficient space for its rotation. The guide rail channel 12 is used to accommodate metal wires in the high-altitude work area. The installation cavity 11 and the guide rail channel 12 are connected, ensuring that when the pressure block assembly 2 is rotated, the end of the pressure block assembly 2 closest to the guide rail channel 12 can extend into the guide rail channel 12, achieving clamping and releasing of the metal wire.

[0022] The main body 1 includes a cover 13 and a housing 14. The cover 13 is detachably fitted onto the housing 14, and the cover 13 and the housing 14 form an installation cavity 11 after they are fitted together, which facilitates the assembly, movement and replacement of the pressure block assembly 2. The guide rail channel 12 is opened on the housing 14 and is located on one side of the installation cavity 11, which facilitates the clamping and loosening of the metal wire in the guide rail channel 12 after rotating the pressure block assembly 2.

[0023] Please refer to the following: Figure 2-8 , Figure 2 This is a perspective view of the fall arrestor with its cover removed in Example 1; Figure 3 This is a three-dimensional structural diagram of the pressure block assembly in Embodiment 1; Figure 4 This is another three-dimensional structural diagram of the pressure block assembly in Embodiment 1; Figure 5 This is a three-dimensional view of the first and second pressure blocks after they rotate relative to each other by an angle α following the breakage of the small pin in Example 1. Figure 6 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the first position; Figure 7 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the second position; Figure 8 This is a perspective view of the fall arrestor in Embodiment 1 with the cover removed and the pressure block assembly in the third position. The pressure block assembly 2 includes a first pressure block 21, a second pressure block 22, a pressure block shaft 23, a large pin 24, and a small pin 25. The pressure block shaft 23 is located within the mounting cavity 11 and its two ends are fixed to the opposing first wall 101 and second wall 102 of the main body 1. The first pressure block 21 is rotatably connected to the pressure block shaft 23. The large pin 24 is rotatably connected to at least one of the first pressure block 21 and the second pressure block 22. The other of the first pressure block 21 and the second pressure block 22 is rotatably or fixedly connected to the large pin 24. That is, the large pin 24 is fixedly connected to the first pressure block 21, and the second pressure block 22 is rotatably connected to the large pin 24; or the large pin 24 is fixed to the second pressure block 22, and the first pressure block 21 is rotatably connected to the large pin 24; or the large pin 24 is rotatably connected to the first pressure block 21, and the large pin 24 is also rotatably connected to the second pressure block 22; the small pin 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, and the end of the second pressure block 22 facing away from the first pressure block 21 is exposed outside the mounting cavity 11. When force is applied to the end of the second pressure block 22 exposed outside the mounting cavity 11, the first pressure block 21 and the second pressure block 22 are fixed by the small pin 25, preventing them from rotating around the large pin 24. The first pressure block 21 and the second pressure block 22 rotate together around the pressure block shaft 23, with the first pressure block 21 moving closer to or away from the guide rail channel 12. When the small pin 25 breaks, the first pressure block 21 and the second pressure block 22 are rotatably connected by the large pin 24. When force is applied to the end of the second pressure block 22 exposed outside the mounting cavity 11, relative rotation will occur between the first pressure block 21 and the second pressure block 22. The second pressure block 22 will rotate towards the side of the first pressure block 21 away from the guide rail channel 12. That is, the second pressure block 22 will continue to rotate relative to the first pressure block 21 around the large pin 24. The angle of relative rotation between the two can be an acute angle, a right angle, or an obtuse angle. The second pressure block 22 rotates until it abuts against the first pressure block 21 and can no longer rotate. In this example, the angle of relative rotation is an acute angle α. When the small pin 25 breaks, after the second pressure block 22 rotates around the large pin 24 relative to the first pressure block 21 by an acute angle α, the second pressure block 22 abuts against the first pressure block 21 and can no longer rotate.

[0024] The second pressure block 22 has one end exposed outside the mounting cavity 11. As a force-bearing component, it facilitates the application of force by the operator and can also absorb the force applied to the second pressure block 22 during a fall, thereby triggering an emergency braking action. The pressure block shaft 23 is disposed inside the mounting cavity 11 and fixed to the first wall 101 and the second wall 102, serving as the rotation shaft of the first pressure block 21. The small pin 25 is fixedly connected to both the first pressure block 21 and the second pressure block 22, ensuring that during normal operation or the initial stage of emergency braking, if the small pin 25 is not broken, the first pressure block 21 and the second pressure block 22 rotate synchronously around the pressure block shaft 23 when the second pressure block 22 is subjected to force. When a fall occurs, the first pressure block 21 will quickly clamp the metal wire into the guide rail channel 12 under the instantaneous pulling force when the worker falls. At this time, the guide rail channel 12 will also generate an instantaneous reverse impact force on the pressure block assembly 2. When the instantaneous reverse impact force generated exceeds the limit force that the small pin 25 can withstand, the small pin 25 will break. Since at least one of the first pressure block 21 and the second pressure block 22 is rotatably connected to the large pin 24, at least one of the first pressure block 21 and the second pressure block 22 will rotate around the large pin 24. The first pressure block 21 and the second pressure block 22 can rotate relative to each other, thereby buffering the instantaneous reverse impact force and preventing the instantaneous reverse impact force from causing injury to the worker.

[0025] In addition, after the small pin 25 breaks, the first pressure block 21 and the second pressure block 22 will rotate relative to each other. The second pressure block 22 will rotate towards the side of the first pressure block 21 away from the guide rail channel 12 until the second pressure block 22 presses against the first pressure block 21. Under the pressure of the second pressure block 22 against the first pressure block 21, the first pressure block 21 still cooperates with the guide rail channel 12 to clamp the metal wire. At the same time as the fall stops, the instantaneous reverse impact force generated by clamping the metal wire is buffered by the relative rotation of the second pressure block 22 and the first pressure block 21. This avoids the violent impact caused by the lack of buffering effect in the traditional rigid braking structure, thereby reducing the unnecessary injury caused by the instantaneous reverse impact force to the high-altitude workers and ensuring the safety of the high-altitude workers.

[0026] The first position is when the pressure block assembly 2 is in its initial position; the second position is when the pressure block assembly 2 is raised to its limit position and the metal wire is threaded into the guide rail channel 12; and the third position is when the pressure block assembly 2 is released and then lowered without pressing the metal wire under external force.

[0027] Review Figure 6-7When working at height, the operator first ties the safety rope to the end of the second pressure block 22 that is exposed outside the mounting cavity 11, and applies a counterclockwise force to the end of the second pressure block 22 that is exposed outside the mounting cavity 11. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the first pressure block 21 and the second pressure block 22 are fixedly connected by the small pin shaft 25, the applied force will drive the first pressure block 21 and the second pressure block 22 to rotate counterclockwise around the pressure block shaft 23, so that the pressure block assembly 2 is in an upward state. That is, at this time, the pressure block assembly 2 transitions from the first position to the second position. As the first pressure block 21 and the second pressure block 22 rotate, the first pressure block 21 gradually rotates away from the guide rail channel 12, so that the gap between the first pressure block 21 and the guide rail channel 12 gradually increases, so as to open the guide rail channel 12. At this time, the metal wire is threaded into the guide rail channel 12.

[0028] Review Figure 8 When the metal wire enters the guide rail channel 12, the force on the second pressure block 22 is released. The first pressure block 21 and the second pressure block 22 rotate clockwise around the pressure block shaft 23 under their own weight. During the rotation, the end of the first pressure block 21 facing the guide rail channel 12 will gradually approach the guide rail channel 12, so that the first pressure block 21 contacts the surface of the metal wire. However, since there is no external force pulling the second pressure block 22 down, the force of the first pressure block 21 on the metal wire is very small, and the metal wire can still move freely along the guide rail channel 12. At this time, the pressure block assembly 2 transitions from the second position to the third position, and the operator can carry the fall arrestor to move along the metal wire for high-altitude operations without affecting normal operation.

[0029] Review Figure 4 Alternatively, the pressure block assembly 2 may also include a spring-loaded torsion spring 26, which is sleeved on the pressure block shaft 23. One end of the spring-loaded torsion spring 26 is fixed to the surface of the first pressure block 21 facing the first wall 101, and the other end of the spring-loaded torsion spring 26 is fixed to the first wall 101. The spring-loaded torsion spring 26 ensures that the pressure block assembly 2 is always in the first position when it is not subjected to external force. When it is necessary to install the metal wire into the guide rail channel 12, the pressure block assembly 2 is lifted by rotating counterclockwise, and the pressure block assembly 2 transitions from the first position to the second position, so that the first pressure block 21 moves away from the guide rail channel 12. After the metal wire is inserted into the guide rail channel 12, the pressure block assembly 2 is released. Under the action of the spring-loaded torsion spring 26 and the weight of the pressure block assembly 2 itself, the pressure block assembly 2 transitions from the second position to the third position.

[0030] When a worker accidentally falls during high-altitude operations, the pulling force generated by the fall is directed towards the ground, pulling the second pressure block 22 towards the ground. The second pressure block 22 pulls the first pressure block 21. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the small pin shaft 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, the first pressure block 21 and the second pressure block 22 rotate clockwise around the pressure block shaft 23 together. The first pressure block 21 gradually moves towards one end of the guide rail channel 12 towards the metal wire, so that the gap between the first pressure block 21 and the guide rail channel 12 gradually decreases, and finally clamps the metal wire in the guide rail channel 12. The fall arrestor no longer slides down along the metal wire, realizing emergency braking and preventing the falling person from continuing to fall. During emergency braking, the first pressure block 21 continuously compresses the metal wire in the guide rail channel 12, and the guide rail channel 12 also generates an instantaneous reverse impact force on the first pressure block 21. The instantaneous reverse impact force generated by the guide rail channel 12 will continuously compress the small pin 25. When the compressive force on the small pin 25 reaches its limit, it will break. At this time, the second pressure block 22 will no longer maintain a fixed connection with the first pressure block 21. At least one of the first pressure block 21 and the second pressure block 22 will rotate around the large pin 24 until the second pressure block 22 rotates to the point where it abuts against the first pressure block 21 and cannot rotate. During the rotation process, the instantaneous reverse impact force generated by emergency braking is buffered, avoiding the violent impact generated by the lack of buffering effect in the traditional rigid braking structure. This reduces the unnecessary injury caused to high-altitude workers by the instantaneous reverse impact force of emergency braking and ensures the safety of high-altitude workers. Meanwhile, in this example, due to the pulling force generated by the fall, the second pressure block 22 will exert a resistance force on the first pressure block 21, and the first pressure block 21 will also exert a resistance force on the metal wire in the guide rail channel 12. In this way, the first pressure block 21 will not rotate around the large pin 24 to loosen the metal wire in the guide rail channel 12, but will tightly squeeze the metal wire in the guide rail channel 12.

[0031] For further details, please review. Figure 3-8 And refer to them together Figure 9-10 , Figure 9 This is a three-dimensional structural diagram of the first pressing block in Example 1; Figure 10 This is a three-dimensional structural diagram of the second pressure block in Embodiment 1. The first pressure block 21 is provided with a boss 211, and the boss 211 has a large pin hole 2111 and a small pin hole 2112; the second pressure block 22 has a slot 220 at the end facing the first pressure block 21, and the slot 220 has a large connecting hole 2201 and a small connecting hole 2202; wherein, the boss 211 is embedded in the slot 220, and the large connecting hole 2201 is aligned with the large pin hole 2111, the small connecting hole 2202 is aligned with the small pin hole 2112, the large pin 24 is inserted into the large connecting hole 2201 and the large pin hole 2111, and the small pin 25 is inserted into the small connecting hole 2202 and the small pin hole 2112.

[0032] The boss 211 is embedded in the slot 220, enabling the first pressure block 21 and the second pressure block 22 to mate, ensuring a tight connection. It also provides positioning for the installation of the large pin 24 and the small pin 25, aligning the large connecting hole 2201 with the large pin hole 2111 and the small connecting hole 2202 with the small pin hole 2112, facilitating the insertion and installation of the large and small pins 25. The large pin 24 is inserted into the large connecting hole 2201 and the large pin hole 2111, enabling the rotational engagement of the first pressure block 21 and the second pressure block 22. The small pin 25 is inserted into the small connecting hole 2202 and the small pin hole 2112, enabling the fixed connection of the first pressure block 21 and the second pressure block 22. This engagement ensures that the first pressure block 21 and the second pressure block 22 can rotate together around the pressure block shaft 23 during normal operation and when the small pin 25 is intact. However, when the force reaches its limit during emergency braking, the small pin 25 breaks, thus providing a buffering effect.

[0033] When the operator applies force to the second pressure block 22, causing it to rotate counterclockwise, the second pressure block 22, through the fixed connection of the small pin 25, drives the boss 211 to rotate counterclockwise, which in turn drives the first pressure block 21 to rotate counterclockwise around the pressure block shaft 23. This ensures that the first pressure block 21 and the second pressure block 22 rotate counterclockwise around the pressure block shaft 23 together, so that the pressure block assembly 2 transitions from the first position to the second position, opening the guide rail channel 12 and inserting the metal wire into the guide rail channel 12. When the operator releases the second pressure block 22, the pressure block assembly 2 rotates clockwise under its own weight or the action of the rebound torsion spring 26. The second pressure block 22 and the first pressure block 21 rotate clockwise around the pressure block shaft 23 together, so that the pressure block assembly 2 transitions from the second position to the third position. The first pressure block 21 contacts the surface of the metal wire in the guide rail channel 12, but the metal wire can move freely along the guide rail channel 12.

[0034] When a fall occurs, the pulling force generated by the fall is directed toward the ground and acts on the second pressure block 22. The second pressure block 22 rotates synchronously with the first pressure block 21, pressing the metal wire in the guide rail channel 12, thereby achieving emergency braking. During emergency braking, the first pressure block 21 exerts a momentary force on the metal wire to clamp it in the guide channel 12. The guide channel 12 also exerts a momentary reverse impact force on the first pressure block 21. This momentary reverse impact force continuously compresses the small pin 25. When the force on the small pin 25 reaches its limit, it will break. After the small pin 25 breaks, the second pressure block 22 rotates clockwise around the large pin 24, causing the first pressure block 21 and the second pressure block 22 to rotate relative to each other. At this time, the boss 211 and the slot 220 will also rotate relative to each other, thus buffering the momentary reverse impact force until the second pressure block 22 rotates to abut against the first pressure block 21 and can no longer rotate. At this point, because the second pressure block 22 exerts a resisting force on the first pressure block 21, the first pressure block 21 will also exert a resisting force on the metal wire in the guide channel 12, so that the metal wire is still clamped in the guide channel 12.

[0035] For further details, please review. Figure 3-10 When the boss 211 is inserted into the slot 220 and the small pin 25 fixes the first pressure block 21 and the second pressure block 22, the end face of the boss 211 facing the bottom of the slot 220 forms a first rotation space 201 with the bottom wall of the slot 220. The end faces of the two slot walls of the slot 220 are respectively connected to the end face of the boss 211 of the first pressure block 21, forming a second rotation space 202. The first rotation space 201 and the second rotation space 202 are located on the same side.

[0036] The first rotation space 201 and the second rotation space 202 provide space for the relative rotation of the first pressure block 21 and the second pressure block 22 after the small pin 25 breaks, ensuring that the two can rotate smoothly relative to each other.

[0037] When the small pin 25 is not broken, the first rotation space 201 and the second rotation space 202 are in an empty state, which does not affect the synchronous rotation of the first pressure block 21 and the second pressure block 22 around the pressure block shaft 23. When the small pin 25 is subjected to the limit of force and breaks, the second pressure block 22 rotates relative to the first pressure block 21 around the large pin 24. At this time, the first rotation space 201 and the second rotation space 202 provide rotation space for the relative rotation of the second pressure block 22 and the first pressure block 21, until the end faces of the two groove walls of the slot 220 rotate to abut against one end face of the boss 211 and cannot rotate.

[0038] For further details, please review. Figure 2-3 and Figure 6-8It also includes an insert 4, which is located in the guide rail channel 12 and is opposite to the mounting cavity 11; the first pressure block 21 is also provided with a concave surface 213 in the direction of the guide rail channel 12, and the distance between the end face of the concave surface 213 and the pressure block shaft 23 gradually increases along the counterclockwise direction.

[0039] The insert 4 is fixed inside the guide rail channel 12, opposite to the mounting cavity 11, serving as a support surface for clamping the metal wire. This enhances the wear resistance of the guide rail channel 12 and prevents long-term friction between the metal wire and the inner wall of the guide rail channel 12, thus preventing wear. The concave surface 213 cooperates with the insert 4 to clamp the metal wire. The distance between the end face of the concave surface 213 and the pressure block shaft 23 gradually increases along the counterclockwise direction. This allows the concave surface 213 to progressively clamp and release the metal wire as the first pressure block 21 rotates around the pressure block shaft 23. Simultaneously, the concave surface 213 increases the contact area between the end face of the first pressure block 21 and the metal wire, allowing the concave surface 213 of the first pressure block 21 to better fit the metal wire, improving the clamping effect and ensuring that the metal wire can be clamped during emergency braking, preventing slippage.

[0040] When a counterclockwise force is applied to the end of the second pressure block 22 exposed outside the mounting cavity 11, the applied force will cause the first pressure block 21 and the second pressure block 22 to rotate counterclockwise around the pressure block shaft 23. At this time, the pressure block assembly 2 transitions from the first position to the second position, and the concave surface 213 gradually rotates away from the guide rail channel 12. At the same time, due to the counterclockwise direction along the first pressure block 21, the distance between the end face of the concave surface 213 and the pressure block shaft 23 gradually increases, that is, the gap between the end face of the concave surface 213 and the insert 4 will gradually increase, so as to open the guide rail. Channel 12 allows the metal wire to be inserted into the guide rail channel 12. When the pressure block assembly 2 is released, that is, when the pressure block assembly 2 transitions from the second position to the third position, or when a worker accidentally falls, the pressure block assembly 2 rotates clockwise around the pressure block shaft 23. The first pressure block 21 drives the concave surface 213 to rotate closer to the insert 4. Since the distance between the end face of the concave surface 213 and the pressure block shaft 23 gradually increases along the counterclockwise direction of the first pressure block 21, the gap between the end face of the concave surface 213 and the insert 4 gradually decreases during clockwise rotation, achieving progressive clamping of the metal wire. At the same time, the concave surface 213 can better fit with the metal wire, increasing the contact area, improving the clamping force, ensuring that the metal wire will not slip during clamping, ensuring the reliability of emergency braking, and preventing the falling person from continuing to fall.

[0041] More preferably, please review Figure 1-2 and Figure 6-8 It also includes a roller shaft 5, which includes a bearing 51 and a roller 52; a groove 120 is also provided at the bottom of the guide rail channel 12, the bearing 51 passes through the groove 120, and the roller 52 is rotatably mounted on the bearing 51.

[0042] The roller shaft 5 is designed to reduce friction between the metal wire and the guide rail channel 12, making it easier for workers to move along the metal wire while carrying the fall arrestor. It also reduces wear on both the metal wire and the guide rail channel 12, extending their service life. The groove 120 is used to install the bearing 51 and the roller 52, ensuring the roller shaft 5 is securely installed and allowing the roller 52 to protrude from the bottom of the guide rail channel 12 and fully contact the metal wire. The bearing 51 passes through the groove 120, ensuring the roller 52 can rotate freely. The roller 52 rotatably rests on the bearing 51, fully contacting the metal wire, converting the sliding friction between the metal wire and the guide rail channel 12 into rolling friction, greatly reducing frictional resistance. When a worker moves along the metal wire carrying the fall arrestor, the metal wire contacts the roller 52, causing the roller 52 to rotate around the bearing 51. The rotation of the roller 52 effectively reduces the frictional resistance between the metal wire and the guide rail channel 12, making movement easier for the worker and not affecting work efficiency.

[0043] In this embodiment, when the fall arrestor is used for high-altitude operations, the operator first ties the safety rope to one end of the second pressure block 22 exposed in the mounting cavity 11, and applies a counterclockwise force to the second pressure block 22. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the first pressure block 21 and the second pressure block 22 are fixedly connected by a small pin 25, the applied force will cause the first pressure block 21 and the second pressure block 22 to rotate counterclockwise around the pressure block shaft 23, so that the pressure block assembly 2 is in an upward state. At this time, the pressure block assembly 2 transitions from the first position to the second position. As the pressure block assembly 2 rotates counterclockwise, the first pressure block 21 gradually rotates away from the guide rail channel 12, so that the gap between the end face of the concave surface 213 and the insert 4 gradually increases, so as to open the guide rail channel 12 and insert the metal wire into the guide rail channel 12. After the metal wire is inserted into the guide rail channel 12, the force on the second pressure block 22 is released, and the first pressure block 21 and the second pressure block 22 rotate together. Under the action of the spring-loaded torsion spring 26 and its own gravity, the two pressure blocks 22 rotate clockwise around the pressure block shaft 23. This causes the pressure block assembly 2 to fall back naturally, that is, the pressure block assembly 2 transitions from the second position to the third position. The first pressure block 21 gradually rotates towards one end of the guide rail channel 12, and the end face of the concave surface 213 gradually approaches the metal wire in the guide rail channel 12, so that the first pressure block 21 contacts the surface of the metal wire. However, since there is no external force pulling the second pressure block 22 down, the force exerted by the first pressure block 21 on the metal wire is very small. The metal wire can still move freely along the guide rail channel 12. The operator can carry the fall arrestor and move along the metal wire for high-altitude operations. At the same time, during the free movement of the metal wire along the guide rail channel 12, the metal wire will contact the roller 52 and drive the roller 52 to rotate around the bearing 51. This can effectively reduce the frictional resistance between the metal wire and the guide rail channel 12 and further improve the smoothness of the free movement of the metal wire.

[0044] When a worker accidentally falls during high-altitude operations, the pulling force generated by the fall pulls the second pressure block 22 towards the ground. The second pressure block 22 pulls the first pressure block 21. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the small pin shaft 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, the first pressure block 21 and the second pressure block 22 continue to rotate clockwise around the pressure block shaft 23 together. The concave surface 213 continues to move closer to the metal wire, so that the gap between the first pressure block 21 and the guide rail channel 12 gradually decreases, and finally clamps the metal wire in the guide rail channel 12, realizing emergency braking and preventing the falling person from continuing to fall. When the force exerted by the first clamping block 21 on the metal wire reaches its limit, the first clamping block 21 will continue to compress the metal wire in the guide channel 12. The guide channel 12 will also generate an instantaneous reverse impact force on the first clamping block 21. The instantaneous reverse impact force is transmitted to the large pin 24 and the small pin 25 through the boss 211 and the slot 220. The limit of force that the large pin 24 can withstand is greater than that that of the small pin 25. The instantaneous reverse impact force generated by the guide channel 12 will continue to compress the small pin 25 and break it first. At this time, the second clamping block 22 is no longer fixedly connected to the first clamping block 21. The second clamping block 22 will rotate relative to the first clamping block 21 around the large pin 24 to buffer the instantaneous impact force generated by the emergency braking. To reduce the impact force and minimize injury to workers at height, the first rotation space 201 and the second rotation space 202 between the first pressure block 21 and the second pressure block 22 provide space for the relative rotation of the second pressure block 22 and limit the rotation angle of the second pressure block 22. Ultimately, the second pressure block 22 abuts against the first pressure block 21, and the relative rotation of the first pressure block 21 and the second pressure block 22 stops. The instantaneous reverse impact force generated by emergency braking is buffered, and under the pulling force generated by the fall, the second pressure block 22 will exert a resisting force on the first pressure block 21. The first pressure block 21 will also exert a resisting force on the metal wire in the guide rail channel 12, so that the metal wire is still clamped in the guide rail channel 12 by the first pressure block 21.

[0045] In summary, the fall arrestor disclosed in this embodiment forms an installation cavity 11 after the split cover 13 and the housing 14 are closed, providing sufficient space for the movement and assembly of the pressure block assembly 2. The guide rail channel 12 is opened on the housing 14 and located on one side of the installation cavity 11, which facilitates the pressure block assembly 2 to clamp the metal wire inserted into the guide rail channel 12. The pressure block assembly 2 adopts the cooperation of a first pressure block 21, a second pressure block 22, a pressure block shaft 23, a large pin 24, and a small pin 25. Under normal high-altitude operation conditions, the small pin 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, and the two can rotate synchronously around the pressure block shaft 23. The guide rail channel 12 can be easily opened and closed, facilitating the insertion of the metal wire and the free movement of the fall arrestor as a whole. In the event of an accidental fall, the pulling force generated during the fall causes the pressure block assembly 2 to rotate clockwise, achieving rapid emergency braking of the metal wire. When the instantaneous reverse impact force generated by the emergency braking exceeds the force limit of the small pin 25, the small pin 25 automatically breaks, and the second pressure block 22 rotates relative to the first pressure block 21 around the large pin 24. With the help of the reserved first rotation space 201 and second rotation space 202, the instantaneous reverse impact force generated by the emergency braking is effectively buffered, avoiding rigid impact that could injure workers at height. At the same time, the end of the first pressure block 21 facing the guide rail channel 12 has a concave surface 213, which cooperates with the insert 4 to achieve progressive clamping of the metal wire, improving the clamping firmness, preventing slippage, and avoiding damage to the metal wire. The guide rail channel 12 has a built-in roller shaft 5, which converts sliding friction into rolling friction, greatly reducing movement resistance, making it easier for workers to carry the fall arrestor, and extending the service life of the metal wire and the fall arrestor.

[0046] Example 2 like Figure 11-12 as well as Figure 15-20 , Figure 11 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the first position in Embodiment 2; Figure 12 This is a perspective view of the fall arrestor in Embodiment 2 with the cover removed and the pressure block assembly in the first position; Figure 15 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the second position and the pressing rod assembly being pressed in Embodiment 2; Figure 16 This is a perspective view of the fall arrestor's corresponding pressure block assembly in the second position and the pressing rod assembly being pressed, from another angle in Embodiment 2. Figure 17 for Figure 16 A magnified view of part A in the middle; Figure 18 This is a perspective view showing the positional fit between the locking parts when the pressure block assembly is in the second position after the cover of the fall arrestor is removed in Embodiment 2. Figure 19 This is a side view showing the positional engagement between the locking parts when the pressure block assembly is in the second position after the cover of the fall arrestor is removed in Embodiment 2. Figure 20This is a perspective view showing the positional engagement between the locking parts when the pressure block assembly is in the third position after the cover of the fall arrester is removed in Embodiment 2. This embodiment also provides a fall arrester with another structure, which includes the body 1, pressure block assembly 2, insert 4, and roller shaft 5 described in Embodiment 1. Unlike Embodiment 1, the fall arrester in this embodiment also includes a locking part 3, which includes a locking protrusion 31, a pressing rod assembly 32, and a baffle assembly 33. The locking protrusion 31 is located on the side of the first pressure block 21 and has a through hole 310. The pressure block shaft 23 passes through the through hole 310 and is fixedly connected to the locking protrusion 31. The first pressure block 21 also has a rotating groove 212. The pressing rod assembly 32 passes through... Located in the rotating slot 212, one end of the pressing rod assembly 32 is located in the mounting cavity 11 and is movably mounted on the inner side wall of the first wall 101, while the other end of the pressing rod assembly 32 extends out of the second wall 102; the baffle assembly 33 is located in the mounting cavity 11 and is on the same side of the first pressing block 21 as the locking protrusion 31, with its end near the pressing rod assembly 32 rotatably mounted on the inner side wall of the second wall 102, and a limiting protrusion 330 extending from the side of the baffle assembly 33 facing the locking protrusion 31, the limiting protrusion 330 extending into the gap between the locking protrusion 31 and the pressing rod assembly 32.

[0047] The locking protrusion 31 is fixedly connected to the pressure block shaft 23 and can rotate together with the pressure block shaft 23. The rotating groove 212 provides a space for the pressing rod assembly 32 to move, ensuring that the pressing rod assembly 32 can move normally without affecting the rotation of the first pressure block 21. The pressing rod assembly 32 passes through the rotating groove 212, with one end movably disposed on the inner side wall of the first wall 101 and the other end passing through the second wall 102, making it convenient for operators to operate the pressing rod assembly 32. The baffle assembly 33 is rotatably disposed on the inner side wall of the second wall 102, and the limiting protrusion 330 extends into the gap between the locking protrusion 31 and the pressing rod assembly 32, which can limit the rotation of the baffle assembly 33, thereby restricting the pressing operation of the pressing rod assembly 32.

[0048] When the pressure block assembly 2 rotates to the second position and the pressing rod assembly 32 is not pressed to be limited in the rotation slot 212, the limiting protrusion 330 abuts against the pressing rod assembly 32, which can limit the baffle assembly 33 from rotating toward the locking protrusion 31.

[0049] When the pressure block assembly 2 rotates to the second position and the end of the pressing rod assembly 32 protruding from the body 1 is pressed, the limiting effect between the limiting protrusion 330 and the pressing rod assembly 32 will be released. The baffle assembly 33 can rotate relative to the body 1. The locking protrusion 31 is located in the rotation direction of the baffle assembly 33. At this time, when the operator moves the baffle assembly 33 towards the locking protrusion 31, the baffle assembly 33 rotates and gradually approaches the locking protrusion 31 until it rotates to contact the locking protrusion 31. The locking protrusion 31 prevents the baffle assembly 33 from continuing to rotate. When the pressure block assembly 2 is in the second position and the baffle assembly 33 cannot continue to rotate due to the obstruction of the locking protrusion 31, the limiting protrusion 330 also rotates to abut against the pressing rod assembly 32. Due to the pressure of the limiting protrusion 330 against the pressing rod assembly 32, the pressing rod assembly 32 is locked in the rotation groove 212, thereby preventing the pressing rod assembly 32 from returning to the state before it was pressed. As the baffle assembly 33 rotates, the guide rail channel 12 is opened, and the metal wire can be inserted into the guide rail channel 12 more smoothly.

[0050] After the metal wire is inserted into the guide rail channel 12, the force on the baffle assembly 33 and the pressure block assembly 2 is removed. The baffle assembly 33 returns to its state before rotation due to the removal of the external force, and the pressure of the limiting protrusion 330 on the pressing rod assembly 32 is released. The locking state of the pressing rod assembly 32 in the rotation slot 212 is also released, so that the pressing rod assembly 32 returns to its state before being pressed. The limiting protrusion 330 will abut against the pressing rod assembly 32 again, thereby restricting the rotation of the baffle assembly 33. Then, the pressure block assembly 2 rotates clockwise under the action of the spring spring 26 and its own gravity, transitioning from the second position to the third position. As the pressure block assembly 2 rotates, the pressing rod assembly 32 and the rotating groove 212 are misaligned. At the same time, the pressure block assembly 2 also blocks and restricts the movement of the pressing rod assembly 32. The end of the pressing rod assembly 32 that protrudes from the body 1 cannot be pressed due to the restriction. The baffle assembly 33 also extends back into the gap between the locking protrusion 31 and the pressing rod assembly 32 due to the limiting effect between the limiting protrusion 330 and the pressing rod assembly 32, making it impossible for the baffle assembly 33 to rotate. After the baffle assembly 33 resets, it will block and close the guide rail channel 12.

[0051] Furthermore, the movement of the pressure block assembly 2 to clamp and release the metal wire in the guide rail channel 12, as well as the structure and function of the insert 4 and the roller assembly 5, are consistent with those in Embodiment 1, and will not be repeated here.

[0052] For further details, please review. Figure 15-20 And refer to them together Figure 13 , Figure 13This is a three-dimensional structural diagram of the pressing rod assembly in Embodiment 2. The pressing rod assembly 32 includes a pressing rod 321 and a spring member 322; the pressing rod 321 passes through the rotating slot 212, one end of the pressing rod 321 is movably connected to the inner side wall of the first wall 101, and the other end of the pressing rod 321 passes through the second wall 102; the spring member 322 is located in the mounting cavity 11 and is sleeved on the outer wall of the pressing rod 321.

[0053] The pressing rod 321 serves as an operating component, facilitating operation by the operator to release the limiting effect on the limiting protrusion 330. The spring 322 is sleeved on the outer wall of the pressing rod 321, providing a reset function. Furthermore, the spring 322 guides the pressing action of the pressing rod 321, preventing it from shifting during pressing and ensuring smooth operation. One end of the pressing rod 321 is movably connected to the inner wall of the first wall 101, while the other end extends through the second wall 102. This ensures flexible movement of the pressing rod 321 and allows the operator to operate from the outside of the main body 1, enabling pressing of the pressing rod assembly 321 without disassembling the cover 13.

[0054] When the pressure block assembly 2 rotates to the second position and the pressing rod 321 is not pressed to be limited in the rotation slot 212, the limiting protrusion 330 abuts against the pressing rod 321, which can limit the baffle assembly 33 from rotating toward the locking protrusion 31.

[0055] When the pressure block assembly 2 rotates to the second position and the end of the pressing rod 321 protruding from the second wall 102 is pressed, the pressing rod 321 will move towards the direction of the rotating groove 212 and squeeze the spring 322 sleeved on the outer wall of the pressing rod 321. The spring 322 undergoes elastic deformation and stores elastic potential energy. After the pressing rod 321 is pressed, the limiting action between the limiting protrusion 330 and the pressing rod 321 will be released. The operator can move the baffle assembly 33 towards the direction of the locking protrusion 31. When the baffle assembly 33 contacts the locking protrusion 31, the limiting protrusion 330 rotates again to abut against the pressing rod 321. Due to the abutment force of the limiting protrusion 330 against the side wall of the pressing rod 321, the pressing rod 321 is limited in the rotating groove 212, thereby preventing the pressing rod assembly 32 from returning to the state before it was pressed. As the baffle assembly 33 rotates toward the locking protrusion 31, the guide rail channel 12 is opened, at which point the metal wire can be inserted into the guide rail channel 12.

[0056] After the metal wire is inserted into the guide rail channel 12, the force on the baffle assembly 33 and the pressure block assembly 2 is removed. That is, after the baffle assembly 33 and the pressure block assembly 2 are released, the baffle assembly 33 returns to its state before rotation, thereby releasing the pressure of the limiting protrusion 330 on the side wall of the pressing rod 321. The limiting state of the pressing rod 321 in the rotation slot 212 is also released. At this time, the spring 322 releases its stored elastic potential energy, pushing the pressing rod 321 to move in the opposite direction, causing the pressing rod 321 to pop out of the rotation slot 212 and return to its state before being pressed. After the baffle assembly 33 is reset, the limiting protrusion 330 abuts against the pressing rod 321 again, keeping the baffle assembly 33 in a stationary state and unable to rotate. When the external force is removed, the pressure block assembly 2 will rotate clockwise under the action of the spring spring 26 and its own gravity. As the pressure block assembly 2 rotates, it will block and restrict the movement of the pressing rod 321, so that the end of the pressing rod 321 that protrudes from the second wall 102 cannot be pressed due to the restriction.

[0057] For further details, please review. Figure 13 and Figure 15-20 The pressing rod 321 includes a pressing head 3211 and a rod body 3212. The pressing head 3211 has a circumferentially arranged limiting groove 32110. The outer diameter of one wall of the limiting groove 32110 is D1, and the outer diameter of the other wall of the limiting groove 32110 is D2. A through hole 1020 is opened on the second wall 102. The diameter of the through hole 1020 is D3, where D1≤D3<D2. The pressing head 3211 passes through the through hole 1020, and the second wall 102 is embedded in the limiting groove 32110. The wall of the limiting groove 32110 with an outer diameter D2 is located in the mounting cavity. 11. One end of the rod 3212 is movably connected to the inner wall of the first wall 101, and the other end of the rod 3212 is connected to the pressing head 3211. The spring 322 is sleeved on the outer wall of the rod 3212. One end of the spring 322 abuts against the pressing head 3211, and the other end abuts against the inner wall of the first wall 101. The rotating slot 212 is also provided with an annular limiting platform 2120 at the end of the limiting slot 32110 with an outer diameter D2. The inner diameter of the annular limiting platform 2120 is D4, and the outer diameter of the annular limiting platform 2120 is D5, where D5≥D2>D4.

[0058] The limiting groove 32110 on the pressing head 3211 is used to cooperate with the through hole 1020 of the second wall 102. Since the outer diameter D1 of one groove wall of the limiting groove 32110 is less than the diameter D3 of the through hole 1020 and the outer diameter D2 of the other groove wall of the limiting groove 32110, it ensures that when the pressing head 3211 is inserted into the through hole 1020, the limiting groove 32110 and its groove wall with outer diameter D1 can move within the second wall 102, and restrict the groove wall with outer diameter D2 from entering the second wall 102, thereby achieving axial limiting of the pressing rod 321 and preventing the pressing rod 321 from moving during the operation. Axial movement occurs without affecting the pressing operation of the pressing rod 321; the groove wall of the limiting groove 32110 with an outer diameter D2 is located in the mounting cavity 11 and can abut against one end of the spring 322, providing a support point for the spring 322 and ensuring that the spring 322 can extend and retract; the setting of the annular limiting platform 2120, since D5≥D2>D4, can limit the pressing head 3211, so that the groove wall with an outer diameter D2 is limited within the annular limiting platform 2120, preventing the pressing rod 321 from being excessively pressed into the rotating groove 212, and at the same time restricting the rotation of the first pressing block 21.

[0059] When the pressure block assembly 2 rotates to the second position and the pressing rod assembly 32 is not pressed to be limited in the rotation slot 212, the limiting slot 32110 and its slot wall with an outer diameter D1 pass through the through hole 1020. The slot wall with an outer diameter D2 of the limiting slot 32110 abuts against the second wall 102, and the limiting protrusion 330 abuts against the slot wall with an outer diameter D2 of the limiting slot 32110 to limit the rotation of the baffle assembly 33.

[0060] When the pressure block assembly 2 rotates to the second position and the pressing head 3211 is pressed and confined to the rotating groove 212, the limiting effect between the limiting protrusion 330 and the groove wall of the limiting groove 32110 with an outer diameter D2 is released. The baffle assembly 33 can rotate towards the locking protrusion 31 to open the guide rail channel 12. During the pressing process, the groove wall of the limiting groove 32110 with an outer diameter D2 moves towards the annular limiting platform 2120, driving the rod body 3212 to move towards the first wall 101 and pressing the spring member 32 sleeved on the outer wall of the rod body 3212. 2. The spring 322 undergoes elastic deformation and stores elastic potential energy. During the rotation of the baffle assembly 33, the limiting protrusion 330 gradually rotates along the direction close to the limiting groove 32110 until it abuts against the limiting groove 32110. At the same time as the limiting protrusion 330 abuts against the limiting groove 32110, there is a pressure between the limiting protrusion 330 and the side of the groove wall with an outer diameter D2 facing the limiting groove 32110, so that the groove wall with an outer diameter D2 is confined in the annular limiting platform 2120, preventing the pressing rod 321 from returning to the state before it was pressed under the action of the spring 322.

[0061] When the force applied to the baffle assembly 33 and the pressure block assembly 2 is removed, the baffle assembly 33 returns to its state before rotation, releasing the restriction of the limiting protrusion 330 on the groove wall with an outer diameter D2. The spring 322 releases its stored elastic potential energy, pushing the pressing head 3211 to move in the opposite direction, causing the groove wall with an outer diameter D2 to pop out from the annular limiting platform 2120, thereby causing the pressing head 3211 and the rod 3212 to return to their state before being pressed. After the baffle assembly 33 resets, the limiting protrusion 330 abuts against the groove wall with an outer diameter D2 again, thereby restricting the rotation of the baffle assembly 33. Due to the removal of the external force, the pressure block assembly 2 rotates clockwise under the action of the return torsion spring 26 and its own gravity. As the pressure block assembly 2 rotates clockwise, it restricts the pressing head 3211 from moving towards the annular limiting platform 2120, keeping the pressing rod 321 in a stationary state, preventing further pressing operations.

[0062] For further details, please review. Figure 15-20 And refer to them together Figure 14 , Figure 14 This is a three-dimensional structural diagram of the baffle assembly in Embodiment 2. The baffle assembly 33 includes a baffle 331, a fixing pin 332, and a reset torsion spring 333. The fixing pin 332 is disposed in the mounting cavity 11, and its two ends are respectively fixed to the inner sidewalls of the first wall 101 and the second wall 102 opposite to the main body 1. The baffle 331 is disposed in the mounting cavity 11, and one end of the baffle 331 is rotatably connected to the fixing pin 332. A limiting protrusion 330 extends from the side of the baffle 331 facing the locking protrusion 31. The reset torsion spring 333 is sleeved on the fixing pin 332. One end of the reset torsion spring 333 is fixed to the inner sidewall of the first wall 101, and the other end of the reset torsion spring 333 is fixed to the baffle 331.

[0063] The fixing pin 332 is fixed between the first wall 101 and the second wall 102, providing support for the rotation of the baffle 331 and ensuring that the baffle 331 can rotate around the fixing pin 332. The limiting protrusion 330 extends out of the baffle 331 facing the locking protrusion 31, and is used to extend into the gap between the locking protrusion 31 and the pressing rod assembly 32, and can limit the rotation of the baffle 331 when the pressing rod assembly 32 is not pressed. The reset torsion spring 333 is sleeved on the fixing pin 332, with one end fixed to the inner side of the first wall 101 and the other end fixed to the baffle 331, and can provide a reset force for the baffle 331. When the baffle 331 rotates and needs to be reset, the reset torsion spring 333 can restore the baffle 331 to the state before it was rotated, so as to open or close the guide rail channel 12 and ensure that the limiting protrusion 330 can restrict the rotation of the baffle 331 again.

[0064] When the pressure block assembly 2 rotates to the second position and the pressing rod assembly 32 is pressed and confined to the rotation slot 212, the limiting effect between the limiting protrusion 330 and the pressing rod assembly 32 is released. The operator can then rotate the baffle 331 around the fixing pin 332 towards the locking protrusion 31 by moving the baffle 331. At this time, the rotation of the baffle 331 will compress the reset torsion spring 333 sleeved on the fixing pin 332, causing the reset torsion spring 333 to undergo elastic deformation and store elastic potential energy. As the baffle 331 rotates, it will gradually approach the locking protrusion 31 until it rotates to contact the locking protrusion 31, at which point the locking protrusion 31 will prevent the baffle 331 from continuing to rotate. When the pressure block assembly 2 is in the second position and the baffle 331 cannot continue to rotate due to the obstruction of the locking protrusion 31, the limiting protrusion 330 will also rotate to abut against the limiting groove 32110. Due to the pressure of the limiting protrusion 330 against the groove wall with an outer diameter D2, the pressing rod assembly 32 is limited in the rotating groove 212, thereby locking the pressing rod assembly 32 and opening the guide rail channel 12. At this time, the metal wire can be inserted into the guide rail channel 12.

[0065] When the force applied to the baffle 331 and the pressure block assembly 2 is removed, the baffle 331 returns to its state before rotation due to the removal of the external force and the elastic potential energy of the return torsion spring 333. This releases the pressure of the limiting protrusion 330 against the groove wall with an outer diameter D2. The pressing rod 321 returns to its state before being pressed due to the loss of pressure and the reset action of the spring 322. The limiting protrusion 330 then re-engages with the pressing rod assembly 32, thus restricting the rotation of the baffle 331. The pressure block assembly 2 then transitions from the second position to the third position under the action of the return torsion spring 26 and its own gravity. As the pressure block assembly 2 rotates, it restricts the movement of the pressing rod assembly 32, preventing further pressing operations.

[0066] For further details, please review. Figure 11 and Figure 14-20 The top of the main body 1 is also provided with a movable groove 103 along the rotation direction of the baffle 331. The end of the baffle 331 opposite to the fixed pin 332 is located in the movable groove 103. The baffle assembly 33 also includes a handle 334 and a limiting pin 335. The handle 334 is fixed on the end of the baffle 331 opposite to the fixed pin 332. The limiting pin 335 is located at the end of the movable groove 103 near the guide rail channel 12. The side of the baffle 331 facing the limiting pin 335 is also provided with a slot 3311. When the baffle 331 is rotated, the slot 3311 moves to abut against the limiting pin 335.

[0067] The movable groove 103 provides space for the rotation of the baffle 331, ensuring that the baffle 331 can rotate smoothly and avoiding interference with the body 1 when the baffle 331 rotates. The handle 334 is fixed to the end of the baffle 331 opposite to the end connected to the fixing pin 332, making it easy for operators to move the baffle 331 without the need for tools, thus improving the ease of operation. The limit pin 335 is located at the end of the movable groove 103 near the guide rail channel 12. The groove 3311 on the baffle 331 abuts against the limit pin 335, which can limit the initial position of the baffle 331 and ensure that the baffle 331 can return to the state before it was rotated after being moved.

[0068] When the pressure block assembly 2 rotates to the second position and the pressing rod assembly 32 is pressed and limited to the rotation groove 212, the limiting effect between the limiting protrusion 330 and the groove wall with an outer diameter D2 is released. The operator moves the handle 334 to drive the baffle 331 to rotate along the movable groove 103 towards the locking protrusion 31. The movable groove 103 restricts the rotation trajectory of the baffle 331, ensuring that the baffle 331 can rotate towards the locking protrusion 31 until the baffle 331 rotates to contact the locking protrusion 31. The locking protrusion 31 then prevents the baffle 331 from continuing to rotate. When the baffle 331 can no longer rotate due to the obstruction of the locking protrusion 31, the limiting protrusion 330 also rotates to abut against the limiting groove 32110 and exerts a resisting pressure on the groove wall of the limiting groove 32110 with an outer diameter D2, so that the pressing rod assembly 32 is locked in the rotating groove 212, thereby ensuring the locking of the pressing rod assembly 32 and the pressing block assembly 2.

[0069] When the force applied to the baffle 331 and the pressure block assembly 2 is removed, the baffle 331 returns to its state before rotation due to the removal of the external force and the action of the return spring 333. That is, the slot 3311 abuts against the limiting pin 335, and the pressure of the limiting protrusion 330 against the limiting groove 32110 is released. The pressing rod 321 returns to its state before being pressed under the action of the spring 322, and the limiting protrusion 330 abuts against the pressing rod assembly 32 again, thereby restricting the rotation of the baffle 331. The pressure block assembly 2 transitions from the second position to the third position under the action of the return torsion spring 26 and its own gravity. As the pressure block assembly 2 rotates, the pressing rod assembly 32 and the rotating groove 212 are misaligned. At the same time, the pressure block assembly 2 also abuts against and restricts the movement of the pressing rod assembly 32, making it impossible for the pressing rod assembly 32 to perform a pressing operation.

[0070] For further details, please review. Figure 14-20 The baffle 331 is also provided with a locking groove 3312 on the side facing the first pressing block 21; wherein, when the baffle 331 rotates along the movable groove 103 toward the direction of approaching the first pressing block 21, the locking groove 3312 gradually engages with the locking protrusion 31.

[0071] The locking groove 3312 is used to cooperate with the locking protrusion 31. When the baffle 331 rotates toward the locking protrusion 31, the locking groove 3312 gradually engages with the locking protrusion 31, which can further enhance the limiting effect on the baffle 331.

[0072] When the pressure block assembly 2 rotates to the second position and the pressing rod assembly 32 is pressed and limited to the rotation groove 212, the operator moves the handle 334 to drive the baffle 331 to rotate along the movable groove 103 towards the locking protrusion 31. The locking groove 3312 will gradually engage with the locking protrusion 31. The locking protrusion 31 can limit the locking groove 3312. As the baffle 331 rotates, the limiting protrusion 330 will also gradually approach the limiting groove 32110, and finally abut against the limiting groove 32110 and generate a resisting force on the groove wall with an outer diameter D2 to prevent the pressing rod 321 from rebounding under the action of the spring 322, and ensure that the pressing rod assembly 32 remains in the pressing state.

[0073] When the force applied to the baffle 331 and the pressure block assembly 2 is removed, the baffle 331 releases the locking groove 3312 from the locking protrusion 31 due to the removal of the external force and the action of the return spring 333. This causes the baffle 331 to rotate along the movable groove 103 away from the locking protrusion 31 until the groove opening 3311 abuts against the limiting pin 335, and the limiting protrusion 330 releases the pressure on the groove wall with an outer diameter D2. The pressing rod 321 then returns to its state before being pressed under the action of the spring 322. At this time, the limiting protrusion 330 will abut against the pressing rod assembly 32 again, thereby restricting the baffle 331 from continuing to rotate towards the locking protrusion 31. The pressure block assembly 2 will transition from the second position to the third position under the action of the spring spring 26 and its own gravity, so as to restrict the pressing rod 321 from moving towards the rotation slot 212. That is, the pressing rod assembly 32 and the baffle assembly 33 are both restricted to a stationary state and cannot be pressed or rotated.

[0074] In this embodiment, during actual high-altitude operations, the worker first ties the safety rope to the end of the second pressure block 22 exposed in the mounting cavity 11 and applies force to the second pressure block 22. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the small pin 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, the applied force will cause the first pressure block 21 and the second pressure block 22 to rotate counterclockwise around the pressure block shaft 23. At this time, the pressure block assembly 2 transitions from the first position to the second position. As the pressure block assembly 2 rotates counterclockwise, the first pressure block 21 gradually rotates away from the guide rail channel 12, causing the gap between the end face of the concave surface 213 and the insert 4 to gradually increase, and causing the rotating groove 212 to rotate to face the pressing rod assembly 32; then the pressing head 3211 is pressed, limiting... The groove wall of the positioning groove 32110 with an outer diameter D2 moves toward the direction of the annular limiting platform 2120, causing the rod 3212 to move toward the direction of the first wall 101 and press the spring 322 sleeved on the outer wall of the rod 3212. The spring 322 undergoes elastic deformation and stores elastic potential energy. At the same time, the limiting effect between the limiting protrusion 330 and the groove wall with an outer diameter D2 is released. The operator holds the handle 334 and moves the baffle 331, causing the baffle 331 to rotate along the movable groove 103 toward the direction of the locking protrusion 31. The rotation of the baffle 331 presses the reset torsion spring 333 sleeved on the fixed pin 332. The reset torsion spring 333 undergoes elastic deformation and also stores elastic potential energy. As the baffle 331 rotates, the locking groove 3312 will gradually engage with the locking protrusion 31 and prevent the baffle 331 from continuing to rotate. When the baffle 331 can no longer rotate due to the obstruction of the locking protrusion 31, the limiting protrusion 330 will also rotate to abut against the limiting groove 32110. Due to the pressure of the limiting protrusion 330 against the groove wall with an outer diameter D2, the pressing rod 321 is limited in the rotating groove 212, preventing the pressing rod 321 from returning to the state before being pressed under the action of the spring 322. This achieves the locking of the pressure block assembly 2 and the pressing rod assembly 32, ensuring that the guide rail channel 12 remains open. At this time, the metal wire can be inserted into the guide rail channel 12. The metal wire contacts the roller 52 and can move freely along the guide rail channel 12, thereby reducing the frictional resistance between the metal wire and the guide rail channel 12.

[0075] After the metal wire is inserted into the guide rail channel 12, the force on the baffle assembly 33 and the pressure block assembly 2 is removed. Due to the removal of the external force and the elastic potential energy of the reset torsion spring 333, the baffle 331 returns to its state before rotation, that is, the locking groove 3312 and the locking protrusion 31 are released from their interlocking state, and the restriction of the limiting protrusion 330 on the groove wall with an outer diameter D2 is released. At the same time, the groove opening 3311 abuts against the limiting pin 335. At this time, the spring 322 releases the stored elastic potential energy, pushing the pressing head 3211 to move in the opposite direction, causing the groove wall with an outer diameter D2 to pop out from the annular limiting platform 2120, thereby causing the pressing head 3211 and the rod 3212 to return to their state before being pressed. After the baffle 331 is reset, the limiting protrusion 330 abuts against the groove wall with an outer diameter D2 again and extends back into the gap between the locking protrusion 31 and the pressing rod assembly 32, thereby restricting the rotation of the baffle assembly 33.

[0076] Then, due to the removal of the external force, the pressure block assembly 2 rotates clockwise under the action of the spring-loaded torsion spring 26 and its own gravity, that is, the pressure block assembly 2 transitions from the second position to the third position. As the pressure block assembly 2 rotates clockwise, the pressing rod assembly 32 is misaligned with the rotating groove 212, and the pressure block assembly 2 also blocks and restricts the movement of the pressing rod assembly 32. The end of the pressing rod assembly 32 that protrudes from the body 1 cannot be pressed due to the restriction, so the pressing rod assembly 32 is confined to a stationary state and cannot be pressed anymore. While the pressure block assembly 2 rotates clockwise, the concave surface 213 gradually approaches the metal wire in the guide rail channel 12 and contacts the surface of the metal wire. However, since there is no external force pulling the second pressure block 22 downward at this time, the force of the first pressure block 21 on the metal wire is very small, and the metal wire can still move freely along the guide rail channel 12.

[0077] When a worker accidentally falls, the pulling force generated by the fall acts on one end of the second pressure block 22 exposed in the mounting cavity 11. The second pressure block 22 pulls the first pressure block 21. Since the first pressure block 21 is rotatably connected to the pressure block shaft 23, and the small pin 25 is fixedly connected to the first pressure block 21 and the second pressure block 22, the first pressure block 21 and the second pressure block 22 are driven to continue to rotate clockwise around the pressure block shaft 23. The gap between the concave surface 213 and the insert 4 gradually decreases, thereby achieving progressive clamping of the metal wire, preventing the falling person from continuing to fall, and avoiding rigid impact. When the force of the first pressure block 21 clamping the metal wire reaches its limit, the first pressure block 21 will continue to squeeze the metal wire in the guide rail channel 12. The guide rail channel 12 will also generate an instantaneous reverse impact force on the first pressure block 21. The instantaneous reverse impact force will be transmitted to the large pin 24 and the small pin 25 through the boss 211 and the slot 220. The instantaneous reverse impact force generated by the guide rail channel 12 will continue to squeeze the small pin 25 and break when the small pin 25 reaches its limit of force. In this way, the second pressure block 22 will no longer be fixedly connected to the first pressure block 21. The second pressure block 22 will rotate relative to the first pressure block 21 around the large pin 24 to buffer the emergency braking impact force, thereby reducing the injury to the operator.

[0078] In summary, the fall arrestor with another structure disclosed in this embodiment, based on the body 1, pressure block assembly 2, insert 4 and roller shaft 5 in embodiment one, also adds a locking part 3. Through the linkage of locking protrusion 31, pressing rod assembly 32 and baffle assembly 33, the guide rail channel 12 can be flexibly locked in the open state. Operators can quickly lock the guide rail channel 12 in the open position by rotating the pressure block assembly 2 counterclockwise, pressing the pressing rod assembly 32, and rotating the baffle assembly 33, thus completing the insertion and removal of the metal wire. After releasing the baffle assembly 33 and the pressure block assembly 2, the pressing rod assembly 32 and the baffle assembly 33 will automatically reset under the action of the spring 322 and the return torsion spring 333, and the two will limit each other after reset. At the same time, the pressure block assembly 2 will rotate under the action of the return torsion spring 26 and its own gravity, causing the pressing rod assembly 32 and the rotating groove 212 to become misaligned. The pressure block assembly 2 will also block and restrict the movement of the pressing rod assembly 32, so that the pressing rod assembly 32 cannot be pressed at will, and the baffle assembly 33 cannot be rotated at will, avoiding misoperation that may affect the normal emergency braking function of the fall arrestor. The entire process does not require disassembling the cover 13, making the operation simple, efficient, and easy to learn. Meanwhile, the size limit design of the pressing rod assembly 32, the limit pin 335 and the locking groove 3312 structure further ensure the stability of the locking and resetting actions, and prevent problems such as component movement and locking failure. This allows the fall arrestor to have both efficient buffering and emergency braking capabilities and convenient operation, making it suitable for various high-altitude operation scenarios and more practical.

[0079] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A fall arrestor, characterized in that, include: The body (1) has an installation cavity (11) and a guide rail channel (12), the guide rail channel (12) being located on one side of the installation cavity (11) and the two communicating with each other; and A pressure block assembly (2) includes a first pressure block (21), a second pressure block (22), a pressure block shaft (23), a large pin (24), and a small pin (25). The pressure block shaft (23) is located inside the mounting cavity (11) and its two ends are fixed to the opposite first wall (101) and second wall (102) of the body (1). The first pressure block (21) is rotatably connected to the pressure block shaft (23). The large pin (24) is rotatably connected to at least one of the first pressure block (21) and the second pressure block (22). The other of the first pressure block (21) and the second pressure block (22) is rotatably or fixedly connected to the large pin (24). The small pin (25) is fixedly connected to the first pressure block (21) and the second pressure block (22). One end of the second pressure block (22) facing away from the first pressure block (21) is exposed outside the mounting cavity (11). When force is applied to the end of the second pressure block (22) exposed outside the mounting cavity (11), the first pressure block (21) and the second pressure block (22) rotate together around the pressure block shaft (23), and the end of the first pressure block (21) facing the guide rail channel (12) moves closer to or away from the guide rail channel (12); when the small pin (25) breaks, the second pressure block (22) rotates toward the side of the first pressure block (21) away from the guide rail channel (12) until the second pressure block (22) abuts against the first pressure block (21).

2. The fall arrestor according to claim 1, characterized in that, The first pressure block (21) is provided with a boss (211), the boss (211) having a large pin hole (2111) and a small pin hole (2112); the second pressure block (22) has a slot (220) at one end facing the first pressure block (21), the slot (220) having a large connecting hole (2201) and a small connecting hole (2202); wherein, the boss (211) is embedded in the slot (220), and the large connecting hole (2201) is aligned with the large pin hole (2111), the small connecting hole (2202) is aligned with the small pin hole (2112), the large pin (24) is inserted into the large connecting hole (2201) and the large pin hole (2111), and the small pin (25) is inserted into the small connecting hole (2202) and the small pin hole (2112).

3. The fall arrestor according to claim 1, characterized in that, It also includes a locking part (3), which includes a locking protrusion (31), a pressing rod assembly (32), and a baffle assembly (33). The locking protrusion (31) is located on the side of the first pressing block (21), and the locking protrusion (31) has a through hole (310). The pressing block shaft (23) passes through the through hole (310) and is fixedly connected to the locking protrusion (31). The first pressing block (21) also has a rotating groove (212). The pressing rod assembly (32) passes through the rotating groove (212), and one end of the pressing rod assembly (32) is located in the mounting cavity (11) and is movably positioned. On the inner sidewall of the first wall (101), the other end of the pressing rod assembly (32) protrudes through the second wall (102); the baffle assembly (33) is located in the mounting cavity (11) and on the same side as the locking protrusion (31) of the first pressing block (21), with one end of the baffle assembly (33) near the pressing rod assembly (32) rotatably disposed on the inner sidewall of the second wall (102), and a limiting protrusion (330) extends out from the side of the baffle assembly (33) facing the locking protrusion (31), the limiting protrusion (330) extending into the gap between the locking protrusion (31) and the pressing rod assembly (32).

4. The fall arrestor according to claim 3, characterized in that, The pressing rod assembly (32) includes a pressing rod (321) and a spring (322); the pressing rod (321) passes through the rotating slot (212), one end of the pressing rod (321) is movably connected to the inner side wall of the first wall (101), and the other end of the pressing rod (321) passes through the second wall (102); the spring (322) is located in the mounting cavity (11) and is sleeved on the outer wall of the pressing rod (321).

5. The fall arrestor according to claim 4, characterized in that, The pressing rod (321) includes a pressing head (3211) and a rod body (3212); the pressing head (3211) is provided with a limiting groove (32110) around its circumference, the outer diameter of one wall of the limiting groove (32110) is D1, and the outer diameter of the other wall of the limiting groove (32110) is D2; a through hole (1020) is provided on the second wall (102), the diameter of the through hole (1020) is D3, D1≤D3<D2; the pressing head (3211) passes through the through hole (1020), the second wall (102) is embedded in the limiting groove (32110), and the wall of the limiting groove (32110) with an outer diameter D2 is located in the mounting cavity (1). 1) Inside; one end of the rod (3212) is movably connected to the inner wall of the first wall (101), and the other end of the rod (3212) is connected to the pressing head (3211); the spring (322) is sleeved on the outer wall of the rod (3212), one end of the spring (322) abuts against the pressing head (3211), and the other end abuts against the inner wall of the first wall (101). The rotating slot (212) is provided with an annular limiting platform (2120) at the end facing the limiting slot (32110) with an outer diameter D2. The inner diameter of the annular limiting platform (2120) is D4, and the outer diameter of the annular limiting platform (2120) is D5, where D5≥D2>D4.

6. The fall arrestor according to claim 3, characterized in that, The baffle assembly (33) includes a baffle (331), a fixing pin (332), and a reset torsion spring (333). The fixing pin (332) is located in the mounting cavity (11), and both ends of the fixing pin (332) are fixed to the inner sidewalls of the first wall (101) and the second wall (102) of the body (1), respectively. The baffle (331) is located in the mounting cavity (11), and one end of the baffle (331) is rotatably connected to the fixing pin (332). The side of the baffle (331) facing the locking protrusion (31) also extends out of the limiting protrusion (330). The reset torsion spring (333) is sleeved on the fixing pin (332), and one end of the reset torsion spring (333) is fixed to the inner sidewall of the first wall (101). The other end of the reset torsion spring (333) is fixed to the baffle (331).

7. The fall arrestor according to any one of claims 5 or 6, characterized in that, The top of the main body (1) is provided with a movable groove (103) along the rotation direction of the baffle (331). The end of the baffle (331) opposite to the fixed pin (332) is located in the movable groove (103). The baffle assembly (33) also includes a handle (334) and a limiting pin (335). The handle (334) is fixed to the end of the baffle (331) opposite to the fixed pin. The limiting pin (335) is located at the end of the movable groove (103) near the guide rail channel (12). The side of the baffle (331) facing the limiting pin (335) is also provided with a slot (3311). When the baffle (331) is rotated, the slot (3311) moves to abut against the limiting pin (335).

8. The fall arrestor according to claim 7, characterized in that, The baffle (331) is provided with a locking groove (3312) on the side facing the first pressure block (21); wherein, when the baffle (331) rotates along the movable groove (103) toward the direction of approaching the first pressure block (21), the locking groove (3312) gradually engages with the locking protrusion (31).

9. The fall arrestor according to any one of claims 1-6, characterized in that, It also includes an insert (4), which is located in the guide rail channel (12) and opposite to the mounting cavity (11); the first pressure block (21) is also provided with a concave surface (213) in the direction of the guide rail channel (12), and the distance between the end face of the concave surface (213) and the pressure block shaft (23) gradually increases along the counterclockwise direction.

10. The fall arrestor according to claim 2, characterized in that, When the boss (211) is inserted into the slot (220) and the small pin (25) fixes the first pressure block (21) and the second pressure block (22), the end face of the boss (211) facing the bottom of the slot (220) forms a first rotation space (201) with the bottom wall of the slot (220), and the end faces of the two slot walls of the slot (220) respectively form a second rotation space (202) with the end face of the boss (211) connected to the first pressure block (21). The first rotation space (201) and the second rotation space (202) are located on the same side.

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