A fall protection device

Abstract

This application discloses a fall arrest device, relating to the field of safety fall arrest equipment technology; it includes a fixed plate and a movable plate connected together; a connecting ring is mounted on the fixed plate and the movable plate; a fixed ring and a locking mechanism are connected to the side of the fixed plate facing the movable plate; the locking mechanism includes a trigger and a movable block; a rope channel is formed between the movable block and the fixed ring, through which the front end of the rope passes and exits between the movable plate and the fixed plate; the trigger is located on the side of the movable block opposite to the fixed ring, and the trigger has a locking part to prevent the movable plate from rotating, and the movable block has a mating part that cooperates with the locking part; when the connecting ring is subjected to a downward pulling force, the front end of the rope exerts a force on the movable block, causing the movable block to rotate, and the locking part and the mating part lock together to lock the rear end of the rope; by moving the trigger, the locking part and the mating part are separated to unlock the rope.

Description

Technical Field

[0001] This application belongs to the technical field of safety fall protection equipment, specifically relating to a fall protection device. Background Technology

[0002] Before rock climbing, staff usually anchor the top of the rope at a certain height and then connect the bottom of the rope to the climber. To prevent the climber from falling off the rope, a fall arrestor is usually attached to the rope. The fall arrestor's function is to quickly lock the rope as the climber falls, so that the fall arrestor can be securely connected to the rope, thereby preventing the climber from falling.

[0003] However, when connecting existing fall arresters to ropes, the fall arrester is usually fully opened to its maximum extent to ensure that the rope is threaded through it. However, the rope has a certain weight, and it is also connected to structures such as cushioning packs. Under the action of these structures, the downward force on the rope increases. Since the rope is not initially locked to the fall arrester during assembly, it will slide down the fall arrester under the influence of gravity. The rope will be in a slipping state and cannot continue to be assembled, which is not conducive to the rapid installation of the rope. It will also cause the rope to fall out of its pre-installed position. Afterwards, the rope needs to be manually pulled upward to return to its initial pre-installed position. Manual pulling prolongs the assembly time, increases labor intensity, makes the installation more complicated, reduces installation efficiency, and the downward sliding of the rope also poses a safety hazard to the surrounding workers. Utility Model Content

[0004] This application provides a fall arrest device to solve the problem that when the rope is not initially locked to the fall arrester, it will slide down the fall arrester under the action of gravity. The rope will be in a slipping state and cannot continue to be assembled, which is not conducive to the rapid installation of the rope. Moreover, it will cause the rope to fall out of the pre-installed position. Subsequently, it is necessary to manually pull the rope upward to return it to the initial pre-installed position. Manual dragging prolongs the assembly time and reduces the installation efficiency.

[0005] The technical solution adopted in this application is as follows: A fall arrestor includes a fixed plate and a movable plate connected to each other; a connecting ring is mounted on the fixed plate and the movable plate; The fixed plate is connected to a fixing ring and a locking mechanism on the side facing the movable plate; The locking mechanism includes a trigger and a movable block; a rope channel is formed between the movable block and the fixed ring, through which the front end of the rope passes and exits between the movable plate and the fixed plate; the trigger is located on the side of the movable block away from the fixed ring, and the trigger has a locking part to prevent the movable plate from rotating, and the movable block has a mating part that cooperates with the locking part; when the connecting ring is subjected to a downward pulling force, the front end of the rope will exert a force on the movable block, causing the movable block to rotate, and the locking part and the mating part lock together to lock the rear end of the rope; by moving the trigger, the locking part and the mating part are separated to unlock the rope.

[0006] The movable plate in this application is rotatably connected to the fixed plate and can open and close relative to the fixed plate, opening the fixed plate and the movable plate at a certain angle, thus facilitating the placement of ropes between the fixed plate and the movable plate. This application includes a fixed ring and a locking mechanism connecting the fixed plate and the movable plate. The locking mechanism includes a trigger and a movable block, which is positioned opposite to the locking mechanism, forming a rope channel between them. In actual installation, the rear end of the rope can be placed in the rope channel first, and then the front end of the rope can be passed through the fixed plate and the movable plate towards the top of the fixed plate. The movable block and the fixed ring can initially lock the rear end of the rope, preventing gravity-bearing structures such as buffer packs connected to the rope from pulling the rope down between the fixed ring and the movable block, thus avoiding upward dragging of the rope, simplifying the installation process, and improving installation efficiency.

[0007] In a preferred embodiment, the fixed plate has a first hanging ring, and the movable plate has a second hanging ring, the first hanging ring and the second hanging ring overlapping each other for engaging with the connecting ring.

[0008] The first and second hanging rings of this application can overlap, making it easy to pass the connecting ring through the first and second hanging rings to connect the connecting ring to the fixed plate and the movable plate. The connecting ring is used to connect other structures, such as a buffer pack. Therefore, by connecting the connecting ring to the first and second hanging rings, the buffer pack can be connected to the fall arrest device to prevent the buffer pack from detaching from the rope.

[0009] In a preferred embodiment, a first groove is formed on the side of the fixing plate away from the locking mechanism and near the top of the fixing plate, and the first groove forms a first hanging ring for connection with the connecting ring; the fixing ring is fixedly connected on the side of the fixing plate away from the locking mechanism and near the bottom of the fixing plate.

[0010] The first hanging ring of the fixed plate in this application is located diagonally above the fixed plate, and the second hanging ring is located diagonally above the movable plate. The purpose is that when the worker sinks, the connecting ring can move downward, so that the entire fall arrest device can rotate downward with the connecting ring. This increases the force applied by the front section of the rope to the movable block, enabling the fall arrest device to respond quickly. The movable block rotates rapidly and locks the rear section of the rope with the fixed ring. The rapid rotation of the movable block also accelerates the locking of the trigger, ensuring that the rear section of the rope is quickly locked, shortening the worker's fall distance, and achieving rapid fall arrest protection.

[0011] In a preferred embodiment, one end of the trigger has a riveting portion, which is connected to the fixed plate by a trigger rivet; the other end of the trigger has a mating portion and a prying portion for manual operation.

[0012] By incorporating a riveting part into the trigger, which is connected to a trigger rivet, the trigger is riveted to a fixed plate, allowing it to rotate relative to the fixed plate. A prying part on the trigger facilitates rotation by pressing the prying part, thus enabling the movable block to rotate. In use, when the movable block needs to be unlocked from the locked connection with the trigger, the trigger is pryed to unlock the movable block, allowing it to rotate relative to the fixed plate and unlocking the rope between the movable block and the fixed ring.

[0013] In a preferred embodiment, the locking part has a protrusion protruding from the side of the trigger, and the movable block has a locking groove on the side facing the trigger, so that when the protrusion rotates into the locking groove, it can engage with the locking groove to achieve locking engagement between the locking part and the mating part.

[0014] To achieve a locking fit between the mating part and the locking part, a protrusion is connected to the locking part. Correspondingly, a snap-fit ​​groove is connected to the mating part of the movable block. The structure of the snap-fit ​​groove is adapted to the protrusion, so that the protrusion can rotate into the snap-fit ​​groove and engage with it as the wrench rotates. This achieves a locking connection between the locking part and the mating part, and further achieves a locking connection between the movable block and the wrench. The position of the movable block relative to the fixed ring is fixed. The movable block and the fixed ring form a lock on the rear section of the rope, preventing the rope from sliding between the movable block and the fixed ring.

[0015] In a preferred embodiment, the actuating part has a plurality of actuating grooves formed along a portion of the periphery of the trigger, so that the trigger can be actuated by pressing the actuating grooves with a finger.

[0016] The trigger part of this application has multiple trigger grooves, which are convenient for pressing the trigger grooves with fingers. The purpose of opening multiple grooves on the periphery of the trigger part is to facilitate the trigger being pulled in different rotation states, thereby enabling rapid activation in emergency situations and improving the efficiency and safety performance of the fall arrest device.

[0017] In a preferred embodiment, the movable block is connected to the fixed plate by a movable block rivet, the first end of the movable block extends toward the top of the fixed plate; the second end of the movable block extends toward the bottom of the fixed plate, and the second end of the movable block has an inwardly recessed arc-shaped guide surface, forming the mating part that cooperates with the locking part.

[0018] The movable block is riveted to the fixed plate by movable block rivets, allowing it to rotate relative to the fixed plate. The movable block can rotate at a certain angle relative to the fixed plate, making the gap between the movable block and the fixed ring adjustable, facilitating the entry of the rope between them. One end of the movable block extends upwards, and the other end extends downwards, allowing the upward-extending end to engage with the front section of the rope, and the downward-extending end to engage with the rear section. The rear section of the rope is first connected between the movable block and the fixed plate. The rope channel formed between the movable block and the fixed ring provides initial positioning of the rope, preventing it from falling between the movable block and the fixed ring due to the gravity of the buffer packs or other structures attached to the rope during the initial installation and throughout the assembly process. This facilitates rope pre-installation and positioning, enabling rapid assembly. The second end of the movable block, facing the trigger, forms a concave arc-shaped guide surface that can roll against the convex arc-shaped surface of the trigger, allowing the trigger to rotate the movable block and unlock it.

[0019] In a preferred embodiment, the first and second ends of the movable block form an outwardly convex arc-shaped working surface on the side facing the fixed ring, and the rope is connected between the arc-shaped working surface and the outer peripheral surface of the fixed ring.

[0020] The first and second ends of the movable block are formed into outwardly convex arc-shaped working surfaces facing the fixed ring. Specifically, the outer circumference of the movable block facing the fixed ring is designed with an arc shape, allowing the rope to connect between the movable block and the fixed ring along the extension direction of the arc-shaped working surface. The rope is confined by the arc-shaped working surface, initially locking the rear section of the rope between the arc-shaped working surface of the movable block and the outer circumference of the fixed ring, preventing the rope from falling off between the movable block and the fixed ring, which would lead to inaccurate installation positioning and subsequent problems such as needing to drag the rope. Furthermore, the outwardly convex arc-shaped working surface... The movable block has a V-shaped structure. After the front end of the rope engages with the first end of the movable block, the front end of the rope extends vertically upward through the fixed plate. The rear end of the rope is locked to the second end of the movable block. The rear end of the rope extends vertically downward through the bottom of the fixed plate. Therefore, when the fixed plate follows the connecting ring downward and flips downward, the front end of the rope can apply a force to the first end of the movable block, causing the first end of the movable block to rotate counterclockwise and the second end of the movable block to rotate clockwise. This allows the second end of the movable block, which has an arc-shaped working surface, to shorten the gap with the outer circumference of the fixed ring and further lock the rope, achieving a locked state for the rope.

[0021] In a preferred embodiment, at least a portion of the arcuate working surface along the arc length direction has a plurality of positioning teeth, which can be used to tension the rope.

[0022] To further increase the locking force between the arc-shaped working surface and the outer circumference of the fixed ring on the rope, and to increase the friction between the arc-shaped working surface and the rope, this application provides multiple positioning teeth on at least a portion of the arc-shaped working surface along the arc length direction. The positioning teeth are evenly distributed between each other. By engaging with the outer circumference of the rope, the friction between the rope and the movable block is increased, thereby further improving the locking force between the movable block and the fixed ring.

[0023] In a preferred embodiment, the bottom of the movable plate is also provided with a U-shaped connecting groove, which can be nested on part of the outer peripheral surface of the fixed ring by rotating the movable plate.

[0024] The bottom of the movable plate of this application is provided with a U-shaped connecting groove to avoid positional interference between the movable plate and the fixed ring when the movable plate is connected to the fixed plate. By providing the U-shaped connecting groove, when the movable plate rotates to the initial position of the fixed plate, the connecting groove can be fitted onto the outer circumferential surface of the fixed ring, and the rotation direction of the movable plate can also be further limited.

[0025] In a preferred embodiment, the fixing plate is also provided with a circular hole so that the connecting rope passes through the circular hole to connect the connecting ring to the fixing plate.

[0026] When the connecting ring is opened and detached from the first hanging ring of the fixed plate and the second hanging ring of the movable plate, in order to prevent the connecting ring from completely detaching from the fixed plate and to prevent the buffer bag and other structures connected to the connecting ring from completely detaching from the fall arresting device, a round hole is made on the fixed plate near the fixed ring. The round hole is a through hole that passes through the fixed plate. One end of the connecting rope is knotted on one side of the round hole to prevent the connecting rope from detaching from the round hole. The other end of the connecting rope is passed through the round hole and connected to the connecting ring. With this setting, even when the connecting ring is detached from the first hanging ring, the connection between the connecting ring and the fixed plate can still be maintained because of the connection of the connecting rope.

[0027] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows: 1. The movable plate in this application is rotatably connected to the fixed plate and can open and close relative to the fixed plate, opening the fixed plate and the movable plate at a certain angle, thereby facilitating the placement of ropes between the fixed plate and the movable plate. This application connects a fixed ring and a locking mechanism between the fixed plate and the movable plate. The locking mechanism includes a trigger and a movable block. The movable block can be arranged opposite to the locking mechanism, forming a rope channel through which the rope passes. In actual installation, the rear end of the rope can be placed in the rope channel first, and then the front end of the rope can be passed through the fixed plate and the movable plate towards the top of the fixed plate. The movable block and the fixed ring can initially lock the rear end of the rope, preventing the weighted structure such as the buffer bag connected to the rope from pulling the rope down between the fixed ring and the movable block, avoiding upward dragging of the rope, simplifying the installation process, and improving installation efficiency. After the rope's front end passes between the fixed plate and the movable plate, the entire fall arrestor can slide up and down along the rope. Therefore, when workers are climbing upwards or descending backwards along the rope, the fall arrestor does not affect their upward climbing. However, when a worker begins to fall, the connecting ring experiences a significant downward impact, causing it to move downwards. This downward movement of the connecting ring causes the entire fall arrestor to rotate towards the connecting ring, resulting in the rope's front end exerting a force on one side of the movable block, causing the movable block to rotate and thus align with... By reducing the gap between the fixed rings, the movable block can further increase the clamping force on the rope until the mating part of the movable block is locked into the locking part of the wrench. This locks the rear section of the rope between the movable block and the fixed ring, ensuring that the greater the downward force, the greater the squeezing strength of the movable block on the rear section of the rope. This securely locks the rope to the fall arrestor, preventing workers from falling down the rope. When it is necessary to unlock the rope, simply rotate the movable block by moving the wrench, increasing the gap between the movable block and the fixed ring, allowing the fall arrestor to slide up and down along the rope. Attached Figure Description

[0028] 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 an overall structural diagram of a fall protection device according to one embodiment of this application; Figure 2 This is a structural diagram showing the opening of the movable plate of a fall protection device at a certain angle according to one embodiment of this application; Figure 3 This is a schematic diagram of the structure of a fall protection device with its movable plate fully open, according to one embodiment of this application. Figure 4 This is a schematic diagram of the internal structure of a fall protection device under a first angle according to one embodiment of this application; Figure 5 This is a structural diagram of the internal structure of a fall protection device under a second angle according to one embodiment of this application; Figure 6 This is a schematic diagram of the structure of a fall protection device and rope assembled according to one embodiment of this application; In the picture, 1. Fixed plate; 2. Movable plate; 3. Fixing ring; 4. Locking mechanism; 41. Trigger; 42. Moving block; 5. Rope channel; 6. Locking part; 7. Fitting part; 8. First hanging ring; 9. Second hanging ring; 10. Trigger rivet; 11. Moving block rivet; 12. Actuating part; 13. Protrusion; 14. Snap-fit ​​groove; 15. Actuating groove; 16. Arc-shaped guide surface; 17. Arc-shaped working surface; 18. Positioning tooth; 19. Round hole; 20. Rope. Detailed Implementation

[0029] Many specific details are set forth in the following description in order to provide a full understanding of this application. However, this application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of this application is not limited to the specific embodiments disclosed below.

[0030] Furthermore, it should be understood in the description of this application that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0031] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0032] In this application, unless otherwise expressly specified and limited, the "above" or "below" of the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. In the description of this specification, references to terms such as "implementation," "example," "a particular embodiment," "example," or "specific example," etc., indicate that the specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any suitable manner in one or more embodiments or examples.

[0033] To more clearly illustrate the overall concept of this application, a detailed explanation is provided below with reference to the accompanying drawings.

[0034] This application relates to a fall arrest device, such as Figure 1-6 As shown, it includes a fixed plate 1 and a movable plate 2 connected to each other; a connecting ring is mounted on the fixed plate 1 and the movable plate 2; A fixing ring 3 and a locking mechanism 4 are connected to the side of the fixed plate 1 facing the movable plate 2; The locking mechanism 4 includes a trigger 41 and a movable block 42; A rope channel 5 is formed between the movable block 42 and the fixed ring 3, through which the rope passes. The front end of the rope passes through the rope channel 5 and exits between the movable plate 2 and the fixed plate 1. The trigger 41 is located on the side of the movable block 42 away from the fixed ring 3. The trigger 41 has a locking part 6 to prevent the movable plate 2 from rotating. The movable block 42 has a mating part 7 that cooperates with the locking part 6. When the connecting ring is subjected to a downward pulling force, the front section of the rope will exert a force on the movable block 42, causing the movable block 42 to rotate. The locking part 6 and the mating part 7 lock together to lock the rear section of the rope. By pulling the trigger 41, the locking part 6 and the mating part 7 are separated to unlock the rope.

[0035] The movable plate 2 in this application is rotatably connected to the fixed plate 1 and can open and close relative to the fixed plate 1, opening the fixed plate 1 and the movable plate 2 at a certain angle, thus facilitating the placement of the rope between the fixed plate 1 and the movable plate 2. This application connects the fixed plate 1 and the movable plate 2 with a fixed ring 3 and a locking mechanism 4. The locking mechanism 4 includes a trigger 41 and a movable block 42. The movable block 42 is positioned opposite to the locking mechanism 4, forming a rope channel 5 through which the rope passes. In actual installation, the rear end of the rope can be placed in the rope channel 5 first, and then the front end of the rope can be passed through the fixed plate 1 and the movable plate 2 towards the top of the fixed plate 1. The movable block 42 and the fixed ring 3 can initially lock the rear end of the rope, preventing the weight of structures such as buffer packs connected to the rope from pulling the rope down between the fixed ring 3 and the movable block 42, thus avoiding upward dragging of the rope, simplifying the installation process, and improving installation efficiency.

[0036] In practical applications, the rope of this application is installed into the fall arrest device in two steps, such as... Figure 2 As shown, first, the movable plate 2 is opened to a certain angle, but it is not opened to its maximum state. This is because when the movable plate 2 is opened to its maximum state, the gap between the bottom of the movable plate 2 and the fixed ring 3 will be very small, which would prevent the rope from being installed into the rope channel 5 formed between the movable block 42 and the fixed ring 3 below the movable plate 2. Therefore, it is only necessary to open the movable plate 2 to a certain angle. The rear end of the rope corresponds to the second end of the movable block 42, and the rope is connected into the rope channel 5. After the rope is installed between the movable block 42 and the fixed ring 3, as shown... Figure 3 As shown, the movable plate 2 is opened to its maximum angle, with the front end of the rope aligned with the first end of the movable block 42. The front end of the rope extends upward from the top of the fixed plate 1 and the movable plate 2, while the rear end extends downward from the bottom of the fixed plate 1 and the movable plate 2. The rope is connected in an S-shape between the movable plate 2 and the fixed plate 1. At this point, the rope can be initially locked between the movable block 42 and the fixed ring 3. The fall arresting device can move up and down along the axis of the rope, thereby achieving the following state of the fall arresting device relative to the rope.

[0037] Since the front end of the rope passes between the fixed plate 1 and the movable plate 2, the entire fall arrest device can slide up and down along the rope. Therefore, when workers climb up or down the rope, the fall arrest device does not affect their ability to climb up. However, when workers begin to fall, the connecting ring experiences a large downward impact force, causing it to move downwards. As the connecting ring moves downwards, it causes the entire fall arrest device to rotate towards the connecting ring. This results in the front end of the rope exerting a certain force on the movable block 42, causing it to rotate and reducing the gap between the movable block 42 and the fixed ring 3. The movable block 42 can further increase the clamping force on the rope until the mating part 7 of the movable block 42 is locked to the locking part 6 of the wrench. This locks the rear end of the rope between the movable block 42 and the fixed ring 3, achieving a locked state of the fall arrest device relative to the rope.

[0038] The greater the downward force on the connecting ring, the greater the squeezing strength of the movable block 42 on the rear section of the rope, which makes the rope and the fall arrest device firmly locked together, thereby preventing workers from falling down the rope. When it is necessary to unlock the rope, simply turn the wrench to rotate the movable block 42, which increases the gap between the movable block 42 and the fixed ring 3, allowing the fall arrest device to slide up and down along the rope.

[0039] In one preferred embodiment, the fixed plate 1 has a first hanging ring 8 and the movable plate 2 has a second hanging ring 9. The first hanging ring 8 and the second hanging ring 9 overlap for engaging with the connecting ring.

[0040] The first hanging ring 8 and the second hanging ring 9 of this application can overlap, which facilitates the connection ring to pass through the first hanging ring 8 and the second hanging ring 9, so as to connect the connection ring to the fixed plate 1 and the movable plate 2. The connection ring is used to connect other structures, such as the buffer pack. Therefore, by connecting the connection ring to the first hanging ring 8 and the second hanging ring 9, the buffer pack can be connected to the fall arrest device to prevent the buffer pack from falling off the rope.

[0041] In a preferred embodiment, a first groove is provided on the side of the fixing plate 1 away from the locking mechanism 4 and near the top of the fixing plate 1, and the first groove forms a first hanging ring 8 for connection with the connecting ring; a fixing ring 3 is fixedly connected on the side of the fixing plate 1 away from the locking mechanism 4 and near the bottom of the fixing plate 1.

[0042] The first hanging ring 8 of the fixed plate 1 is located diagonally above the fixed plate 1, and the second hanging ring 9 is located diagonally above the movable plate 2. The purpose is that when the worker falls, the connecting ring can move downward, so that the entire fall arrest device can rotate downward with the connecting ring, thereby increasing the force applied by the front section of the rope to the movable block 42, realizing the rapid stress response of the fall arrest device, and enabling the movable block 42 to rotate rapidly and lock the rear section of the rope with the fixed ring 3. The rapid rotation of the movable block 42 can also accelerate the rapid locking with the locking part 6 of the trigger 41, thereby ensuring that the rear section of the rope is quickly locked, shortening the distance of the worker's fall, and realizing the ability of rapid fall arrest protection.

[0043] In a preferred embodiment, one end of the trigger 41 has a riveting part, which is connected to the fixing plate 1 by a trigger rivet 10; the other end of the trigger 41 has a mating part 7 and a toggle part 12 for manual operation.

[0044] By providing a riveting part to the trigger 41 and connecting the trigger rivet 10 to the riveting part, the trigger 41 is riveted to the fixed plate 1, allowing the trigger 41 to rotate relative to the fixed plate 1. By providing a toggle part 12 to the trigger 41, a finger can press the toggle part 12 to rotate the trigger 41, thereby allowing the movable block 42 to rotate by toggle the trigger 41. In use, when the movable block 42 is locked to the trigger 41 and needs to be unlocked, toggle the trigger 41 to unlock the movable block 42, allowing it to rotate relative to the fixed plate 1, thus unlocking the rope between the movable block 42 and the fixed ring 3.

[0045] In a preferred embodiment, the locking part 6 has a protrusion 13 protruding from the side of the trigger 41, and the movable block 42 has a locking groove 14 on the side facing the trigger 41, so that when the protrusion 13 rotates into the locking groove 14, it can engage with the locking groove 14 to achieve locking engagement between the locking part 6 and the mating part 7.

[0046] To achieve a locking engagement between the mating part 7 and the locking part 6, a protrusion 13 is connected to the locking part 6. Correspondingly, a snap-fit ​​groove 14 is connected to the mating part 7 of the movable block 42. The structure of the snap-fit ​​groove 14 is adapted to the structure of the protrusion 13, so that the protrusion 13 can rotate into the snap-fit ​​groove 14 and engage with the snap-fit ​​groove 14 as the wrench rotates. This achieves a locking connection between the locking part 6 and the mating part 7, and further achieves a locking connection between the movable block 42 and the wrench. The position of the movable block 42 relative to the fixed ring 3 is fixed. The movable block 42 and the fixed ring 3 form a locking of the rear section of the rope, preventing the rope from sliding between the movable block 42 and the fixed ring 3.

[0047] In a preferred embodiment, the actuating part 12 has a plurality of actuating grooves 15 formed along a portion of the periphery of the trigger 41, so that the trigger 41 can be actuated by pressing the actuating grooves 15 with a finger.

[0048] The actuating part 12 of this application has multiple actuating grooves 15, which are convenient for pressing the actuating grooves 15 with fingers. The purpose of opening multiple grooves on the periphery of the trigger 41 is to facilitate the actuation of the trigger 41 in different rotation states, thereby enabling rapid activation in emergency situations and improving the efficiency and safety performance of the fall arrest device.

[0049] In a preferred embodiment, the movable block 42 is connected to the fixed plate 1 by the movable block rivet 11. The first end of the movable block 42 extends toward the top of the fixed plate 1, and the second end of the movable block 42 extends toward the bottom of the fixed plate 1. The second end of the movable block 42 has an inwardly recessed arc-shaped guide surface 16, forming a mating part 7 that cooperates with the locking part 6.

[0050] The movable block 42 is riveted to the fixed plate 1 by the movable block rivet 11, allowing the movable block 42 to rotatably connect to the fixed plate 1. The movable block 42 can rotate relative to the fixed plate 1 at a certain angle, making the gap between the movable block 42 and the fixed ring 3 adjustable, facilitating the entry of the rope between the movable block 42 and the fixed ring 3. One end of the movable block 42 extends upward, and the other end extends downward, allowing the upward-extending end of the movable block 42 to engage with the front section of the rope, and the downward-extending end of the movable block 42 to engage with the rear section of the rope. First, the rear section of the rope is connected between the movable block 42 and the fixed plate 1. The rope channel 5 formed between the movable block 42 and the fixed ring 3 can initially position the rope, preventing the rope from falling between the movable block 42 and the fixed ring 3 due to the gravity of the buffer pack and other structures connected to the rope during the initial installation and even the entire assembly process. This facilitates the pre-installation and positioning of the rope, enabling rapid assembly. The second end of the movable block 42 forms a concave arc-shaped guide surface 16 facing the trigger 41, which can form a rolling contact with the convex arc-shaped surface of the trigger 41, thereby enabling the trigger 41 to rotate the movable block 42 to achieve the unlocked state between the movable block 42 and the trigger 41.

[0051] In a preferred embodiment, the first and second ends of the movable block 42 form an outwardly protruding arc-shaped working surface 17 on the side facing the fixed ring 3, and the rope is connected between the arc-shaped working surface 17 and the outer peripheral surface of the fixed ring 3.

[0052] The first and second ends of the movable block 42 are formed into outwardly protruding arc-shaped working surfaces 17 on the side facing the fixed ring 3. This means that the outer circumference of the movable block 42 facing the fixed ring 3 is provided with an arc-shaped structure, allowing the rope to connect between the movable block 42 and the fixed ring 3 along the extension direction of the arc-shaped working surface 17. The rope is confined by the arc-shaped working surface 17, initially locking the rear section of the rope between the arc-shaped working surface 17 of the movable block 42 and the outer circumference of the fixed ring 3, preventing the rope from falling off between the movable block 42 and the fixed ring 3, which would lead to inaccurate installation positioning and subsequent problems such as needing to drag the rope. Furthermore, the outwardly protruding arc-shaped working surface 17... The movable block 42 has a V-shaped structure. After the front end of the rope engages with the first end of the movable block 42, the front end of the rope extends vertically upward through the fixed plate 1. The rear end of the rope is locked and connected to the second end of the movable block 42. The rear end of the rope extends vertically downward through the bottom of the fixed plate 1. Therefore, when the fixed plate 1 follows the connecting ring downward and flips downward, the front end of the rope can apply a force to the first end of the movable block 42, causing the first end of the movable block 42 to rotate counterclockwise and the second end of the movable block 42 to rotate clockwise. This allows the second end of the movable block 42, i.e. the end with the arc-shaped working surface 17, to shorten the gap with the outer circumference of the fixed ring 3 and further lock the rope, thus achieving the locking state of the rope.

[0053] In a preferred embodiment, at least a portion of the arcuate working surface 17 along the arc length direction has a plurality of positioning teeth 18, which can be used to tension the rope.

[0054] To further increase the locking force between the arc-shaped working surface 17 and the outer periphery of the fixed ring 3 on the rope, and to increase the friction between the arc-shaped working surface 17 and the rope, this application provides a plurality of positioning teeth 18 on at least a portion of the arc-shaped working surface 17 along the arc length direction. The positioning teeth 18 are evenly distributed. By engaging with the outer periphery of the rope, the friction between the rope and the movable block 42 is increased, thereby further improving the locking force between the movable block 42 and the fixed ring 3.

[0055] As a preferred embodiment, the bottom of the movable plate 2 is also provided with a U-shaped connecting groove, which can be nested on part of the outer peripheral surface of the fixed ring 3 by rotating the movable plate 2.

[0056] The bottom of the movable plate 2 of this application is provided with a U-shaped connecting groove to avoid positional interference between the movable plate 2 and the fixed ring 3 when the movable plate 2 is connected to the fixed plate 1. By providing the U-shaped connecting groove, when the movable plate 2 rotates to the initial position of the fixed plate 1, the connecting groove can be fitted onto the outer circumferential surface of the fixed ring 3, and the rotation direction of the movable plate 2 can also be further limited.

[0057] In a preferred embodiment, the fixing plate 1 is further provided with a circular hole 19 so that the connecting rope passes through the circular hole 19 to connect the connecting ring to the fixing plate 1.

[0058] When the connecting ring is opened and detached from the first hanging ring 8 of the fixed plate 1 and the second hanging ring 9 of the movable plate 2, in order to prevent the connecting ring from completely detaching from the fixed plate 1 and to prevent the buffer bag and other structures connected to the connecting ring from completely detaching from the fall arresting device, a round hole 19 is provided on the fixed plate 1 near the fixed ring 3. The round hole 19 is a through hole that passes through the fixed plate 1. One end of the connecting rope is tied in a knot on one side of the round hole 19 to prevent the connecting rope from detaching from the round hole 19. The other end of the connecting rope is passed through the round hole 19 and connected to the connecting ring. With this setting, even when the connecting ring is detached from the first hanging ring 8, the connection between the connecting ring and the fixed plate 1 can still be maintained because of the connection of the connecting rope.

[0059] For any parts not mentioned in this application, existing technologies may be used or referenced.

[0060] The various embodiments in this specification are described in a progressive manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0061] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A fall arrestor, characterized in that, It includes a fixed plate and a movable plate that are connected to each other; a connecting ring is fitted onto the fixed plate and the movable plate; The fixed plate is connected to a fixing ring and a locking mechanism on the side facing the movable plate; The locking mechanism includes a trigger and a movable block; a rope channel is formed between the movable block and the fixed ring, through which the front end of the rope passes and exits between the movable plate and the fixed plate; the trigger is located on the side of the movable block away from the fixed ring, and the trigger has a locking part to prevent the movable plate from rotating, and the movable block has a mating part that cooperates with the locking part; when the connecting ring is subjected to a downward pulling force, the front end of the rope will exert a force on the movable block, causing the movable block to rotate, and the locking part and the mating part lock together to lock the rear end of the rope; by moving the trigger, the locking part and the mating part are separated to unlock the rope.

2. The fall arrest device according to claim 1, characterized in that, The fixed plate has a first hanging ring, and the movable plate has a second hanging ring. The first hanging ring and the second hanging ring overlap and are used to engage with the connecting ring.

3. The fall arrest device according to claim 1, characterized in that, A first groove is provided on the side of the fixed plate away from the locking mechanism and near the top of the fixed plate, and the first groove forms a first hanging ring for connection with the connecting ring; the fixed ring is fixedly connected on the side of the fixed plate away from the locking mechanism and near the bottom of the fixed plate.

4. The fall arrest device according to claim 1, characterized in that, One end of the trigger has a riveting part, which is connected to the fixed plate by a trigger rivet; the other end of the trigger has a mating part and a prying part for manual operation.

5. A fall arrestor device according to claim 4, characterized in that, The locking part has a protrusion protruding from the side of the trigger, and the movable block has a locking groove on the side facing the trigger, so that when the protrusion rotates into the locking groove, it can engage with the locking groove to realize the locking engagement between the locking part and the mating part.

6. A fall arrestor device according to claim 4, characterized in that, The actuating part has a plurality of actuating grooves formed along a portion of the periphery of the trigger, so that the trigger can be actuated by pressing the actuating grooves with a finger.

7. A fall arrestor device according to claim 1, characterized in that, The movable block is connected to the fixed plate by a movable block rivet. The first end of the movable block extends toward the top of the fixed plate; the second end of the movable block extends toward the bottom of the fixed plate. The second end of the movable block has an inwardly recessed arc-shaped guide surface, forming the mating part that cooperates with the locking part.

8. A fall arrestor device according to claim 7, characterized in that, The first and second ends of the movable block form an outwardly convex arc-shaped working surface on the side facing the fixed ring, and the rope is connected between the arc-shaped working surface and the outer peripheral surface of the fixed ring.

9. A fall arrestor device according to claim 8, characterized in that, At least a portion of the arc-shaped working surface along the arc length direction has multiple positioning teeth, which enable the rope to be tensioned.

10. A fall arrest device according to claim 1, characterized in that, The fixing plate is also provided with a round hole so that the connecting rope can pass through the round hole to connect the connecting ring to the fixing plate.

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