Eccentric lever type fall arrest hook and quick release device for a fire fighting harness

Abstract

The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment. The application discloses an eccentric lever type anti-falling hook and quick release device of a fire-fighting waist belt and relates to the technical field of fire-fighting equipment.

Description

Technical Field

[0001] This invention relates to the field of fire-fighting equipment technology, specifically to an eccentric lever-type anti-fall hook and quick-release device for a fire-fighting belt. Background Technology

[0002] In high-altitude fire rescue, exterior wall repair, and high-rise building firefighting operations, firefighters must wear fire safety belts and use safety ropes to perform suspended operations. Fall arrest hooks are the core safety component connecting the safety belt to the fixed anchor point, achieving fall arrest braking. Conventional fire fall arrest hooks rely on one-way claws and spring locking plates to clamp the rope and prevent falls. During operation, after the rope passes through the internal rope cavity of the hook, the spring force presses against the braking block to lock the rope. When the firefighter completes the operation and needs to quickly detach from the rope or take emergency evasive action, they must manually overcome the spring force to pry open the locking structure and release the rope. The environment for high-altitude firefighting operations is complex, with multiple adverse conditions such as dense smoke obscuring vision, oily gloves causing slippage, limited hand movement in confined rescue spaces, and the risk of hand burns from high temperatures in the fire scene. Therefore, stringent requirements are placed on the reliability of the hook's locking mechanism, ease of unlocking, and safety performance against accidental activation.

[0003] Existing traditional fall arrestor hooks rely solely on a single brake pad and a single spring to clamp and lock the rope. When unlocking, they rely solely on moving a lever in one direction to pull the brake pad away from the rope. The locking and unlocking force structure is simple, and operating the lever with one hand requires continuously applying a large pulling force to overcome the spring force and release the lock. This makes the operation laborious and the unlocking speed slow. Summary of the Invention

[0004] The purpose of this invention is to provide an eccentric lever-type anti-fall hook and a quick release device for fire hoses, so as to solve the problems of laborious unlocking operation and slow release speed of traditional anti-fall hooks in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An eccentric lever-type fall arrest hook and quick release device for a fire hose includes: a fall arrest frame, a connecting shaft installed on the inner surface of the fall arrest frame, a baffle rotatably installed at one end of the connecting shaft, a locking groove between the baffle and the fall arrest frame, a rope passage groove inside the fall arrest frame, the rope passage groove can be opened or locked by rotating the baffle, a first sliding groove is opened on one side of the rope passage groove, a sliding frame is slidably limited in the first sliding groove, a plurality of first springs are connected between one side wall of the sliding frame and the side wall of the first sliding groove, a first stop plate is fixed at the other side wall of the sliding frame, and a second stop plate is provided on the other inner wall of the rope passage groove, the positions of the first stop plate and the second stop plate are corresponding;

[0007] The release assembly includes a rotating shaft rotatably mounted in a first slide groove, a rotating roller offsetly mounted around the rotating shaft, a rotating seat fixed to one end of the rotating shaft, and a control rod fixed around the rotating seat. When the first spring is in the reset position, the first stop plate is close to the second stop plate. By rotating the control rod, the rotating seat is driven to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft drives the rotating roller to move eccentrically. After the rotating roller rotates, it squeezes the sliding frame. During the squeezing process, the sliding frame compresses the first spring. At this time, the first stop plate moves away from the second stop plate, thereby releasing the rope from its lock and achieving rapid release.

[0008] Furthermore, a second sliding groove is provided on the other side of the rope groove, and a second spring is connected to the inner surface of the second sliding groove. One end of the second spring is connected to a second anti-fall plate.

[0009] Furthermore, a traction groove is connected between the first chute and the second chute, the traction groove and the rope passage groove are offset, a sealing cover is provided at the point where the traction groove and the rope passage groove pass through, and a traction component is provided at the traction groove.

[0010] Furthermore, the traction assembly includes a first connecting block fixed to the rear end face of the sliding frame, a second connecting block fixed to the rear end face of the second stop plate, a traction rope connecting the first connecting block and the second connecting block, and a guide wheel rotatably mounted on the inner surface of the traction groove. Both the first connecting block and the second connecting block slide within the traction groove. By controlling the movement of the sliding frame, the first connecting block moves synchronously when the sliding frame moves, thereby driving the traction rope to move. The traction rope drives the second connecting block to move, thereby pulling the second stop plate to move in the opposite direction to the first stop plate, achieving a more stable unlocking function.

[0011] Furthermore, locking ridges are arrayed on the surfaces of both the first and second fall arresters.

[0012] Furthermore, a locking rod is fixed to the rear end face of the fall arrestor frame.

[0013] Furthermore, a positioning groove is provided on the upper surface of the control rod, and the locking rod is located in the positioning groove. A limiting rod is provided on the side wall of the positioning groove to limit the sliding movement. By controlling the limiting rod, the locking rod can be positioned in the positioning groove to lock the position of the control rod and avoid rapid release caused by accidental operation.

[0014] Furthermore, a limiting magnetic block is fixed to the rear end face of the fall arrestor frame, a limiting groove is opened at the side wall of the baffle, and an adsorption magnetic block is provided on the inner wall of the limiting groove, and the limiting magnetic block and the adsorption magnetic block are attracted to each other.

[0015] Compared with the prior art, the present invention provides an eccentric lever-type fall arrest hook and quick release device for a fire-fighting belt. By setting a locking groove and a baffle to cooperate, the locking groove can be threaded with a connecting belt hook to complete the assembly with the fire-fighting belt. After the baffle is closed, the locking groove forms a closed limiting structure, which constrains the position of the baffle from the side, prevents the baffle from shifting or opening when the rope is pulled, and prevents the rope from coming out of the rope passage, which greatly improves the safety factor of preventing rope slippage in high-altitude operations. With the addition of a limiting magnetic block to magnetically attach to the baffle, a double limiting fixation is achieved, and the stability of the baffle closure is stronger.

[0016] By adopting an eccentric lever-type release component, the eccentric rotating roller squeezes the sliding frame to complete the unlocking. The lever amplifies the force, and the spring force can be easily overcome by moving the control lever with one hand to separate the two fall arresting plates. The unlocking is labor-saving and the action stroke is short. The rope can be quickly released in emergency scenarios, which is suitable for working conditions where the fire scene is confined and hand operation is restricted.

[0017] With symmetrical double stop plates and a pulling assembly, the rope is clamped simultaneously on both sides during the fall impact. The locking edge increases frictional resistance and effectively prevents the rope from slipping. When unlocking, the two stop plates separate in opposite directions and synchronously, with a larger unlocking gap, allowing the rope to be released smoothly without jamming. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a top view structural diagram provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of the middle AA section;

[0022] Figure 4 This is a three-dimensional structural diagram of the traction component provided in an embodiment of the present invention;

[0023] Figure 5 for Figure 1 Enlarged view of part B in the middle section;

[0024] Figure 6 This is a schematic diagram of the traction groove structure.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Fall arrestor frame; 101. Connecting shaft; 2. Baffle; 3. Rope passage groove; 4. Locking groove; 5. Limiting groove; 6. Limiting magnetic block; 7. First sliding groove; 8. First spring; 9. Sliding frame; 10. First fall arrest plate; 11. Locking ridge; 12. Second sliding groove; 13. Second spring; 14. Second fall arrest plate; 15. Rotating shaft; 16. Rotating roller; 17. Pulling groove; 18. First connecting block; 19. Pulling rope; 20. Guide wheel; 21. Second connecting block; 22. Rotating seat; 23. Control rod; 24. Locking rod; 25. Positioning groove; 26. Limiting rod. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0028] As attached Figure 1 To be continued Figure 6 As shown:

[0029] Example 1: This invention provides an eccentric lever-type fall arrest hook and quick release device for a fire hose, including: a fall arrest frame 1 and a release component, integrating multiple functions such as hose connection, rope insertion and closure, fall locking, one-hand quick unlocking, and misoperation protection, and is suitable for use in fire rescue operations at heights;

[0030] The fall arrestor frame 1 is the main load-bearing skeleton of this device. It is integrally formed from high-strength forged aviation aluminum alloy, and its tensile strength meets the standards for high-altitude fall impact load. The overall structure is U-shaped. A metal connecting shaft 101 is horizontally fixed to the inner side wall of the fall arrestor frame 1. A baffle 2 is rotatably mounted on the outer end of the connecting shaft 101. The baffle 2 can rotate and open around the connecting shaft 101. When the baffle 2 is closed, it surrounds the side of the fall arrestor frame 1 to form a locking groove 4. The locking groove 4 is a closed elongated groove structure. During operation, the fire belt is attached to the connecting... The hook and webbing are inserted into the locking groove 4. The groove wall of the locking groove 4 forms a wrapping and limiting effect on the hook, so as to achieve a firm assembly between the fall arrest frame 1 and the fire belt. When the safety rope is inserted into the rope passage groove 3 and subjected to downward pull, the rope will generate an outward pushing force on the inside of the baffle 2. The groove wall of the locking groove 4 can abut against the edge of the baffle 2 from the outside, forming a lateral rigid limiting constraint, which counteracts the pushing force generated by the rope, prevents the baffle 2 from shifting around the connecting shaft 101 and opening outward, and prevents the rope from slipping out of the opening of the rope passage groove 3.

[0031] A recessed limiting groove 5 is opened on the side wall of the baffle 2. A limiting magnetic block 6 is fixedly embedded at the corresponding position on the rear end face of the fall arrest frame 1. An adsorption magnetic block is pre-embedded in the inner wall of the limiting groove 5. After the baffle 2 is completely closed, the limiting magnetic block 6 and the adsorption magnetic block attract each other. The baffle 2 is firmly attached to the end face of the fall arrest frame 1 by magnetic force, forming a double fixing structure of mechanical limiting of the locking groove and magnetic adsorption, which further improves the closing stability of the baffle and prevents the baffle from being accidentally lifted due to high-altitude vibration and impact.

[0032] The hollow area inside the fall arrestor frame 1 has a rope passage 3, which is a through channel for threading fire safety ropes. When the baffle 2 is rotated upward to open, an opening is formed on the side of the rope passage 3, allowing the rope to be quickly placed into the groove. When the baffle 2 is rotated downward to close, the opening on the side of the rope passage 3 is completely closed, and the rope is completely wrapped inside the rope passage 3, with no way to escape.

[0033] The inner wall of the left side of the rope passage groove 3 is recessed to form a first sliding groove 7, which is a rectangular closed slide. A sliding frame 9 is installed inside the slide to limit horizontal movement. The sliding frame 9 can only move left and right along the first sliding groove 7. Multiple first springs 8 are evenly distributed between the left end face of the sliding frame 9 and the left wall of the first sliding groove 7. The first springs 8 are in a pre-compressed and reset state under normal conditions, and continuously apply a rightward thrust to the sliding frame 9. A first stop plate 10 is integrally welded to the right end face of the sliding frame 9. Multiple transverse locking ridges 11 are stamped on the end face of the first stop plate 10 facing the center of the rope passage groove 3. The locking ridges 11 are triangular protrusions that can increase the coefficient of friction with the rope surface and prevent the rope from slipping during descent.

[0034] A second slide groove 12 is opened on the inner wall of the right side of the rope groove 3. A second spring 13 is installed inside the second slide groove 12. One end of the second spring 13 is fixed to the bottom wall of the second slide groove 12, and the other end is connected to the second fall arrest plate 14. The second fall arrest plate 14 is directly opposite the first fall arrest plate 10. An array of locking ribs 11 is also set on the left end face of the second fall arrest plate 14. Under normal conditions, the first spring 8 pushes the sliding frame 9 to the right and the second spring 13 pushes the second fall arrest plate 14 to the left. The two fall arrest plates move closer to each other and clamp the safety rope passing through the middle. The rope is clamped and locked by the pretension of the springs on both sides. Once a firefighter falls from a height, the rope will slide down and further squeeze the two fall arrest plates. The spring compression increases and the clamping force increases simultaneously, achieving self-locking fall prevention.

[0035] A traction groove 17 is formed at the rear of the first chute 7 and the second chute 12. The traction groove 17 is arranged horizontally in the horizontal direction and is staggered vertically with the front rope passage groove 3 to avoid interference. A sealing cover is installed at the connection point between the two to prevent rope debris and water stains from entering the traction groove and jamming the components. A complete traction assembly is installed inside the traction groove 17. The traction assembly includes a first connecting block 18, a second connecting block 21, a traction rope 19, and a guide wheel 20. The first connecting block 18 is fixed to the rear end face of the sliding frame 9, and the second connecting block 21 is fixed to the rear end face of the second fall arrestor plate 14. Both can slide horizontally along the inner wall of the traction groove 17. The guide wheel 20 is rotatably installed in the middle of the traction groove 17. The traction rope 19 passes around the guide wheel 20 and is tied to the first connecting block 18 and the second connecting block 21 at both ends, forming a reversing traction structure. When the sliding frame 9 moves to the left and compresses the first spring 8, the first connecting block 18 moves to the left in sync. The pulling rope 19 pulls the second connecting block 21 to the right, causing the second stop plate 14 to move to the right in sync and compress the second spring 13. The two stop plates separate to the sides in sync, and the gap in the middle of the rope groove 3 expands in sync. The rope can be released smoothly without clamping or restraining.

[0036] The release assembly is assembled in the lower part of the first slide 7. The rotating shaft 15 is horizontally mounted between the front and rear side walls of the first slide 7. The cylindrical roller 16 is eccentrically fixed to the circumferential side wall of the rotating shaft 15. The center of the roller 16 and the center of the rotating shaft 15 have a radial offset, forming an eccentric extrusion structure. The front end of the rotating shaft 15 extends out of the first slide 7 and is fixed to a circular rotating seat 22. The outer circumference of the rotating seat 22 is integrally formed with an outwardly extending control rod 23. The control rod 23 is a long lever, which is convenient for firefighters to operate with one hand while wearing gloves. In the normal locked state, the eccentric roller 16 is away from the side wall of the sliding frame 9 and does not generate pressure. When the control lever 23 is pushed down, the rotating seat 22 drives the rotating shaft 15 to rotate synchronously. The eccentric roller 16 follows the rotating shaft to make a circumferential eccentric motion. The outer edge of the roller gradually fits and squeezes the left side wall of the sliding frame 9, pushing the sliding frame 9 to the left to compress the first spring 8. With the help of the traction component, the second stop plate moves to the right synchronously. The two stop plates release the ropes synchronously, completing the rapid unlocking and release.

[0037] The rear end of the fall arrestor frame 1 extends outward to fix a metal locking rod 24. A recessed positioning groove 25 is opened on the upper surface of the control rod 23, and the locking rod 24 can be embedded in the positioning groove 25. A transverse through hole is opened on the side wall of the positioning groove 25, and a sliding limit rod 26 is installed in the through hole. After the operation is completed and unlocked, the control rod 23 is rotated to the locking position, the locking rod 24 falls into the positioning groove 25, and the limit rod 26 is pushed inward to pass through the positioning groove 25, locking the locking rod 24 tightly. At this time, the control rod 23 cannot rotate, and the eccentric roller remains detached from the sliding frame, permanently maintaining the locking clamp, avoiding accidental unlocking caused by bumps, tool scratches, or accidental disengagement of the control rod during operation. When unlocking is required, the limit rod 26 can be pulled out, and the control rod can be moved freely.

[0038] Working principle:

[0039] Step 1: Attach the fire belt by inserting the hook of the connecting strap of the fire belt into the locking groove 4 formed by the fall arrest frame 1 and the baffle 2. This completes the connection between the device and the fire belt. Rotate the baffle 2 downwards to close it. The groove wall of the locking groove 4 abuts against the edge of the baffle from the outside to form a lateral limit. At the same time, the magnetic block in the limiting groove 5 of the side wall of the baffle attracts the upper limit magnetic block 6 of the fall arrest frame, thus doubly fixing the baffle and preventing it from shifting under force.

[0040] The second step is rope insertion: Rotate upwards to lift the baffle 2, open the side opening of the rope passage 3, and insert the safety rope horizontally into the middle of the two fall arrest plates in the rope passage. Then close the baffle 2 downwards again to completely seal the opening of the rope passage. The rope is then sealed inside the passage with no way to escape.

[0041] The third step is to lock and prevent accidental activation: Move the control lever 23 back to the initial locking position. The locking lever 24 on the rear end of the fall arrestor frame is embedded in the positioning groove 25 on the control lever. Push the limit lever 26 inward to pass through the positioning groove and lock the control lever 24. The eccentric roller moves away from the sliding frame and has no squeezing effect. The first spring 8 pushes the sliding frame 9 and the first fall arrestor plate 10 to the right, and the second spring 13 pushes the second fall arrestor plate 14 to the left. The two fall arrestor plates clamp the rope towards each other. The friction is increased by the locking edge 11 on the plate surface, and the static clamping and locking is completed.

[0042] When firefighters are working in mid-air, the rope only bears the static weight of the human body, without any violent impact from a fall. Multiple first springs 8 and second springs 13 continuously output stable preload. The first and second fall arresters 10 and 14 clamp the rope in both directions, and the locking edge engages with the rope sheath, preventing the rope from slipping. The locking groove continuously provides lateral limiting baffles to counteract the slight outward pushing force of the rope, and the baffles always remain closed. The limiting rod 26 locks the control rod, and the eccentric lever release component remains in standby mode, preventing accidental locking and ensuring stable fall prevention throughout the entire process.

[0043] If a firefighter falls from a height, the weight of their body creates a downward impact force that causes the rope to slide down along the rope groove. During this sliding process, the rope will compress the first and second fall arrest plates 10 and 14 on both sides, forcing the two fall arrest plates to compress the first and second springs 8 and 13 slightly to the sides, respectively. As the spring compression increases, the reverse clamping friction increases simultaneously, and the locking edge embeds into the surface of the rope, quickly locking the rope and preventing further fall, thus achieving self-adaptive self-locking fall protection. During this process, the locking groove continuously restrains the baffle, and the falling force will not cause the baffle to open and the rope to come off.

[0044] When a fire breaks out and a quick escape from the rope is required, the first step is to pull out the limiting rod 26 from the positioning slot 25 to release the locking constraint of the control rod 23. The second step is for the firefighter, wearing gloves, to pull the control rod 23 downwards with one hand. The control rod drives the rotating seat 22 to rotate synchronously, which in turn drives the rotating shaft 15 to rotate synchronously. The eccentrically mounted rotating roller 16 on the side of the rotating shaft follows the shaft in an eccentric circular motion. The outer edge of the roller gradually contacts the left side wall of the sliding frame 9, continuously outputting extrusion force to the right, pushing the sliding frame 9 to move horizontally to the left, simultaneously compressing multiple... When the first spring 8 and sliding frame 9 move to the left, the first connecting block 18 fixed at its rear end moves to the left simultaneously. The pulling rope 19 in the pulling groove 17 passes around the guide wheel 20 and reverses direction to pull the second connecting block 21 to the right, causing the second stop plate 14 to compress the second spring 13 and move to the right. At this time, the first stop plate moves to the left with the sliding frame and the second stop plate moves to the right simultaneously. The two stop plates separate in opposite directions, the clamping gap in the middle is greatly expanded, and the rope loses the clamping friction on both sides, so it can be directly pulled out from the rope groove to complete the emergency quick release. The entire unlocking process relies on the eccentric movement of the eccentric roller to amplify the hand-pulling torque. Only a small force is needed to overcome the total elasticity of multiple first springs, perfectly solving the defects of traditional hook unlocking being laborious and slow to release. At the same time, the locking groove continuously limits the baffle, and the baffle will not open during the release process to prevent the rope from being accidentally thrown out.

[0045] After the release and reset locking phase is completed and the rope is completely removed or re-threaded, release the control lever 23. The compressed first springs 8 rebound to the right, pushing the sliding frame 9 and the first stop plate 10 to reset. The sliding frame moves to the right, causing the first connecting block 18 to move to the right, the traction rope 19 to relax, and the second spring 13 rebounds to the left, pushing the second stop plate 14 to reset. The two stop plates move closer together again to clamp the rope. Rotate the control lever 23 upward to the initial locking position, the locking lever 24 falls back into the positioning groove 25, push in the limit lever 26 to lock the control lever, and the device returns to the normal locking condition, ready for use in high-altitude operations again.

[0046] Example 2: This example retains the main structure and all technical features of claim 1 of Example 1, but strengthens and optimizes the limiting fit structure between the locking groove 4 and the baffle 2 to adapt to long-term operation scenarios in high-temperature fire scenes.

[0047] The upper and lower sides of the inner wall of the buckle groove 4 are integrally formed arc-shaped limiting ribs. The curvature of the ribs matches the outer contour of the waist belt connecting hook. After the hook is inserted into the buckle groove, it is clamped and limited by the upper and lower ribs, preventing the hook from swaying up and down in the groove, and further improving the connection stability between the waist belt and the fall arrest frame. The front end of the baffle 2 is integrally formed with a locking protrusion. The locking protrusion is completely embedded in the opening end of the buckle groove to form a locking and limiting structure. The lateral constraint of the side wall of the buckle groove is superimposed, and the double blocking baffle is offset outward by the force of the rope.

[0048] The original limiting magnetic blocks and adsorption magnetic blocks are replaced with high-temperature resistant mechanical magnetic buckles. Even after the magnetic force weakens in the high-temperature environment of the fire, the buckles can still mechanically engage and fix the baffle, avoiding the risk of the baffle falling off due to high-temperature magnetic failure.

[0049] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. An eccentric lever-type anti-fall hook and quick-release device for a fire hose, characterized in that, include: A fall arresting frame (1) is provided with a connecting shaft (101) installed on the inner surface of the fall arresting frame (1). A baffle (2) is rotatably installed at one end of the connecting shaft (101). A locking groove (4) is provided between the baffle (2) and the fall arresting frame (1). A rope passage groove (3) is provided inside the fall arresting frame (1). A first sliding groove (7) is provided on one side of the rope passage groove (3). A sliding frame (9) is limited and slidably installed in the first sliding groove (7). A plurality of first springs (8) are connected between one side wall of the sliding frame (9) and the side wall of the first sliding groove (7). A first stop plate (10) is fixed at the other side wall of the sliding frame (9). A second stop plate (14) is provided on the other inner wall of the rope passage groove (3). The release assembly includes a rotating shaft (15) rotatably mounted in the first groove (7), a rotating roller (16) biasedly mounted on the periphery of the rotating shaft (15), a rotating seat (22) fixed to one end of the rotating shaft (15), and a control rod (23) fixed on the periphery of the rotating seat (22).

2. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 1, characterized in that, A second sliding groove (12) is provided on the other side of the rope groove (3). A second spring (13) is connected to the inner surface of the second sliding groove (12). One end of the second spring (13) is connected to the second stop plate (14).

3. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 2, characterized in that, A traction groove (17) is connected between the first slide groove (7) and the second slide groove (12), and a traction component is provided at the traction groove (17).

4. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 3, characterized in that, The traction assembly includes a first connecting block (18) fixed to the rear end face of the sliding frame (9), a second connecting block (21) fixed to the rear end face of the second stop plate (14), a traction rope (19) connected between the first connecting block (18) and the second connecting block (21), and a guide wheel (20) rotatably installed on the inner surface of the traction groove (17); the first connecting block (18) and the second connecting block (21) both slide in the traction groove (17).

5. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 1, characterized in that, Locking ribs (11) are arranged in an array on the surface of the first stop plate (10) and the second stop plate (14).

6. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 1, characterized in that, The rear end face of the fall arrestor frame (1) is fixed with a locking rod (24).

7. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 6, characterized in that, The upper surface of the control rod (23) is provided with a positioning groove (25), the locking rod (24) is located in the positioning groove (25), and the side wall of the positioning groove (25) is limited by a sliding limit rod (26).

8. The eccentric lever-type anti-fall hook and quick-release device for a fire hose according to claim 1, characterized in that, The rear end face of the fall arrestor frame (1) is fixed with a limiting magnetic block (6), and a limiting groove (5) is opened on the side wall of the baffle (2). An adsorption magnetic block is provided on the inner wall of the limiting groove (5), and the limiting magnetic block (6) is attracted to the adsorption magnetic block.

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