Fall arrest suspension device
By designing a combination structure of inner and outer locking components for the fall-prevention suspension equipment, and utilizing torsion springs to automatically lock the hook, the problem of easy separation between the wire rope and the hook in traditional hoisting methods is solved, achieving stable locking of the hook and improving construction safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO BAOLI CONSTR CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-07-14
AI Technical Summary
In traditional hoisting methods, building materials are prone to significant swaying during the construction of high-rise buildings, which can lead to unexpected displacement between the wire rope and the hook, potentially causing the binding to loosen or the hook to come off, creating safety hazards.
A fall-prevention suspension device was designed, which adopts a combination structure of inner and outer locking parts. The hook is automatically locked by the elastic force of the torsion spring. Combined with the lifting mechanism of the movable pulley and the fixed pulley, the inner locking plate and the outer locking rod work together to ensure that the open end of the hook does not easily open during transportation, thus preventing the steel rope from falling off.
It effectively prevents the hook from falling off due to shaking during transportation, reduces safety hazards, ensures the stable delivery of building materials, and improves construction safety.
Smart Images
Figure CN224493463U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of suspension equipment technology, and in particular relates to a fall-prevention suspension device. Background Technology
[0002] Construction, as a core production activity in the engineering construction phase, involves the construction process of various buildings. The construction of high-rise buildings often relies on lifting equipment to transport building materials, moving them into the high-rise building for convenient construction. Traditional hoisting methods involve workers binding materials with wire ropes, then hooking the wire ropes onto the hoist's hook for transport. However, hooks are often open, allowing building materials such as boards and pipes to swing significantly during movement. This not only causes unintended displacement between the wire rope and the hook but can also lead to serious accidents such as loosening of the bindings or even complete detachment. Falling building materials can cause secondary injuries and directly threaten the safety of on-site construction workers. Utility Model Content
[0003] Based on the above background, the purpose of this utility model is to provide a fall-prevention suspension device.
[0004] To achieve the above objectives, the present invention adopts the following technical solution:
[0005] A fall arrest suspension device includes a frame and a crossbeam; the crossbeam is mounted on the frame, a lifting mechanism is mounted on the crossbeam, the lifting mechanism is connected to a movable pulley via a lifting rope, the movable pulley is rotatably mounted on a lifting block, and a hook is provided at the bottom of the lifting block;
[0006] The hook is rotatably equipped with an inner locking component, which includes an inner locking plate. The top of the inner locking plate is rotatably connected to the top two sides of the hook opening end. A torsion spring is provided at the connection between the inner locking plate and the hook. The lower end of the inner locking plate abuts against the bottom inner side of the hook opening end.
[0007] A limiting block is provided on the outer bottom of the open end of the hook;
[0008] The inner locking plate is provided with an outer locking component, which includes a connecting rod. Two connecting rods are symmetrically arranged on the front and rear sides of the inner locking plate. The bottom of the connecting rod is provided with a telescopic groove. The bottom of the connecting rod is provided with a moving rod. The moving rod is T-shaped and one end is slidably disposed in the telescopic groove. A spring is sleeved on the moving rod. The spring is disposed in the telescopic groove, and the two ends of the spring are respectively connected to the moving rod and the telescopic groove. An outer locking rod is connected between the two moving rods. When the outer locking component is in the locked state, the outer locking rod abuts against the lower end face of the limiting block.
[0009] With the above technical solution, after the hook is hooked to the steel rope of the bundled object, the inner locking plate automatically abuts against the inner side of the hook due to the elasticity of the torsion spring. The connecting rods on both sides are rotated downward and the outer locking rod is pulled. The moving rod slides outward in the telescopic groove so that the outer locking rod is located below the limit block. At this time, the spring is in a compressed state. When the outer locking rod is released, the spring releases the pressure and drives the moving rod to retract into the telescopic groove, so that the outer locking rod abuts against the lower end face of the limit block. Through the cooperation of the inner and outer locking parts, both sides of the hook opening are locked, and the locking force is relative, which better closes the hook opening end and prevents it from being easily opened by external force during transportation. This avoids the steel rope from falling off the hook due to shaking during the lifting process, which could cause the bundled object to fall off and be damaged, creating a safety hazard.
[0010] Furthermore, the number of movable pulleys is not less than two; the lifting mechanism includes fixed pulleys, the number of which corresponds to the number of movable pulleys, and the movable pulleys and fixed pulleys are connected by lifting ropes.
[0011] Furthermore, the lifting mechanism also includes a movable block, the fixed pulley is rotatably mounted on the movable block, the movable block is slidably mounted on the crossbeam, the movable block is equipped with a winch, and one end of the lifting rope is mounted on the winch.
[0012] The above technical solution uses a winch to retract the lifting rope, which in turn causes the hook to rise.
[0013] Furthermore, a first hook block is provided on the outer side of the lower end of the inner locking piece, and a second hook block is provided on the inner side of the bottom of the open end of the hook;
[0014] The first hook block is hooked to the bottom of the second hook block.
[0015] The above technical solution allows for better locking of the inner side of the hook opening.
[0016] Furthermore, a slot is provided at the bottom of the inner side of the hook.
[0017] The above technical solution provides a limiting effect on the steel rope, which can reduce the swaying amplitude of the steel rope and the object during the lifting process.
[0018] Furthermore, the bottom of the connection between the limiting block and the hook is an arc-shaped groove, which engages with the outer locking rod.
[0019] The above technical solution allows the external locking component to better lock the outside of the hook.
[0020] Furthermore, the upper surface of the limiting block is an inclined structure.
[0021] With the above technical solution, when locking the outside, the outer locking rod can slide along the inclined surface of the limiting block to stretch the moving rod.
[0022] Furthermore, a hook is provided on the upper end of the inner locking plate near the outer locking rod. When the outer locking piece is unlocked from the hook, the outer locking rod is hooked onto the hook.
[0023] The above technical solution avoids interference from the external locking components when the hook catches the steel rope.
[0024] Furthermore, a pull ring is fitted onto the outer locking rod.
[0025] With the above technical solution, the operator can better achieve the locking and unlocking states of the outer locking rod by pulling the pull ring.
[0026] This utility model has the following beneficial effects:
[0027] When locking the hook, the inner locking plate automatically abuts against the inner side of the hook due to the elastic force of the torsion spring. Rotating the connecting rods on both sides downward and pulling the outer locking rod causes the moving rod to slide outward in the telescopic groove, positioning the outer locking rod below the limiting block. At this time, the spring is in a compressed state. Releasing the outer locking rod releases the spring pressure, causing the moving rod to retract into the telescopic groove, making the outer locking rod abut against the lower end face of the limiting block. Through the cooperation of the inner and outer locking parts, both sides of the hook opening are locked, and the locking force is relative, which better closes the hook opening and prevents it from being easily opened by external force during transportation. This avoids the steel rope from falling off the hook due to shaking during lifting, which could cause the bundled object to fall off and be damaged, creating a safety hazard. Attached Figure Description
[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0029] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0030] Figure 2 This is a three-dimensional structural diagram of the hook, inner locking component, and outer locking component of this utility model;
[0031] Figure 3 This is a three-dimensional structural diagram of the hook of this utility model;
[0032] Figure 4 This is a three-dimensional structural diagram of the inner and outer locking components of this utility model.
[0033] in:
[0034] 1. Erecting the frame;
[0035] 2. Crossbeam;
[0036] 3. Lifting rope; 31. Movable pulley; 32. Fixed pulley; 33. Moving block; 34. Winch;
[0037] 4. Lifting block; 41. Hook; 42. Limiting block; 43. Second hook block; 44. Slot; 45. Arc-shaped groove;
[0038] 5. Inner locking plate; 51. First hook block; 52. Hook;
[0039] 6. Connecting rod; 61. Telescopic groove; 62. Moving rod; 63. Spring; 64. External locking rod; 65. Pull ring. Detailed Implementation
[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0041] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.
[0042] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.
[0043] like Figure 1-4As shown, a fall arrest suspension device includes a frame 1 and a crossbeam 2. The crossbeam 2 is mounted on the frame 1, and a lifting mechanism is mounted on the crossbeam 2. A drive mechanism is also mounted on the crossbeam 2 to move the lifting mechanism on the crossbeam 2. The drive mechanism drives the lifting mechanism using conventional technology. The lifting mechanism is connected to a movable pulley 31 via a lifting rope 3. The movable pulley 31 is rotatably mounted on a lifting block 4. A hook 41 is located at the bottom of the lifting block 4. The hook 41 is rotatably connected to the lifting block 4. A slot 44 is formed at the bottom of the inner side of the hook 41. The slot 44 is for steel... The rope has a limiting function, and the hook 41 is rotatably equipped with an inner locking component, which includes an inner locking piece 5. The top of the inner locking piece 5 is rotatably connected to the top two sides of the open end of the hook 41. A torsion spring is provided at the connection between the inner locking piece 5 and the hook 41. The lower end of the inner locking piece 5 abuts against the bottom inner side of the open end of the hook 41. The inside of the hook 41 can be automatically locked by the force of the torsion spring. When working with the steel rope of the bundle, it is hooked from the outside of the hook 41 and pushed inward, so that the steel rope can enter the inside of the hook 41 through the inner locking piece 5. A limiting block 42 is provided on the outer side of the inner locking plate 5; an outer locking component is provided on the inner locking plate 5, the outer locking component includes a connecting rod 6, two connecting rods 6 are symmetrically arranged on the front and rear sides of the inner locking plate 5, a telescopic groove 61 is provided at the bottom of the connecting rod 6, a moving rod 62 is provided at the bottom of the connecting rod 6, the moving rod 62 is T-shaped and one end is slidably disposed in the telescopic groove 61; a spring 63 is sleeved on the moving rod 62, the spring 63 is disposed in the telescopic groove 61, and the two ends of the spring 63 are respectively connected to the moving rod 62 and the telescopic groove 61; an outer locking rod 64 is connected between the two moving rods 62, and the outer locking component is locked. In the fixed state, the outer locking rod 64 abuts against the lower end face of the limiting block 42, and in the initial state, the spring 63 is in a slightly compressed state, and the top of the moving rod 62 is located at the top of the telescopic groove 61. This ensures that when the outer locking rod 64 is pulled to abut against the limiting block 42, the spring 63 itself is compressed and the pulling force generated by the moving rod 62 on the outer locking rod 64 is better locked on the outside of the hook 41. In the locked state, the directions of the locking forces of the inner locking member and the outer locking member on the hook 41 are opposite, which better ensures the stability of the locked state of the hook 41.
[0044] Specifically, there are at least two movable pulleys 31; the lifting mechanism includes fixed pulleys 32, the number of which corresponds to the number of movable pulleys 31. The movable pulleys 31 and fixed pulleys 32 are connected by a lifting rope 3. The lifting mechanism also includes a moving block 33, the fixed pulleys 32 are rotatably mounted on the moving block 33, the moving block 33 is slidably mounted on the crossbeam 2, and a winch 34 is mounted on the moving block 33. One end of the lifting rope 3 is mounted on the winch 34. One way to connect the lifting rope 3 is that one end of the lifting rope 3 is fixed in the fixed ring of the outermost fixed pulley 32, passes around the movable pulley 31 and then around the fixed pulley 32, and after passing around the corresponding movable pulleys 31 and fixed pulleys 32 in sequence, the other end of the lifting rope 3 is connected to the drum of the winch 34. Thus, by rotating the winch 34, the hook 41 can be driven to rise to complete the transportation of the bundled object, and the object is then slid on the crossbeam 2 via the moving block 33 to the required position.
[0045] Specifically, the lower outer side of the inner locking piece 5 is provided with a first hook block 51, and the inner side of the bottom of the opening end of the hook 41 is provided with a second hook block 43; when the inner locking piece is in the locked state, the first hook block 51 hooks onto the bottom of the second hook block 43, and the bottom of the connection between the limiting block 42 and the hook 41 is an arc-shaped groove 45. When the outer locking piece is in the locked state, the arc-shaped groove 45 engages with the outer locking rod 64. The upper end surface of the limiting block 42 is an inclined structure, and the limiting block 42 is far from... The side away from the hook 41 is hemispherical. A pull ring 65 is fitted on the outer locking rod 64. Pulling the pull ring 65 will stretch the outer locking rod 64 along the inclined surface and hemispherical surface of the limiting block 42, and then slide it down to the bottom of the limiting block 42 to complete the locking. The outer locking rod 64 can be rotatably connected to the moving rod 62. A hook 52 is provided on the upper end of the inner locking plate 5 near the outer locking rod 64. When the outer locking part is unlocked from the hook 41, the outer locking rod 64 is hooked on the hook 52.
[0046] The working principle of this utility model is as follows: Before use, rotate the connecting rod 6 upward to hook the outer locking rod 64 onto the hook 52. Then, the opening end of the lifting ring can be opened by manually pushing the inner locking plate 5 to rotate inward. The steel rope of the bundle can be placed inside the lifting ring. Alternatively, the steel rope can be hooked onto the lifting ring, and the inner locking plate 5 can be pushed open by the resistance of the steel rope, so that the steel rope is placed inside the lifting ring. Then, pull the pull ring 65 to disengage the outer locking rod 64 from the hook 52 and rotate it downward to the limit block 42. Pull the pull ring 65 to extend the moving rod 62 and compress the spring 63. The outer locking rod 64 passes through the outside of the limit block 42 to the bottom of the limit block 42. Release the pull ring 65, and the outer locking rod 64 slides into the lower side of the limit block 42 under the force of the spring 63 and engages with the arc groove 45, completing the locking of the inner and outer sides of the hook 41. Then, the lifting mechanism transports the bundle to the corresponding height to complete the transport.
[0047] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.
Claims
1. A fall arrestor suspension device, comprising a frame (1) and a crossbeam (2), characterized in that: The crossbeam (2) is mounted on the upright frame (1), and a lifting mechanism is mounted on the crossbeam (2). The lifting mechanism is connected to the movable pulley (31) via a lifting rope (3). The movable pulley (31) is rotatably mounted on the lifting block (4). The bottom of the lifting block (4) is provided with a hook (41). The hook (41) is rotatably provided with an inner locking component, which includes an inner locking piece (5). The top of the inner locking piece (5) is rotatably connected to the top two sides of the opening end of the hook (41). A torsion spring is provided at the connection between the inner locking piece (5) and the hook (41). The lower end of the inner locking piece (5) abuts against the bottom inner side of the opening end of the hook (41). A limiting block (42) is provided on the outer bottom of the open end of the hook (41); The inner locking plate (5) is provided with an outer locking component, which includes a connecting rod (6). Two connecting rods (6) are symmetrically arranged on the front and rear sides of the inner locking plate (5). The bottom of the connecting rod (6) is provided with a telescopic groove (61). The bottom of the connecting rod (6) is provided with a moving rod (62). The moving rod (62) is T-shaped and one end is slidably disposed in the telescopic groove (61). A spring (63) is sleeved on the moving rod (62). The spring (63) is disposed in the telescopic groove (61), and the two ends of the spring (63) are respectively connected to the moving rod (62) and the telescopic groove (61). An outer locking rod (64) is connected between the two moving rods (62). When the outer locking component is in the locked state, the outer locking rod (64) abuts against the lower end face of the limiting block (42).
2. The fall arrest suspension device according to claim 1, characterized in that: The number of movable pulleys (31) is not less than two; the lifting mechanism includes fixed pulleys (32), the number of fixed pulleys (32) corresponds to the number of movable pulleys (31), and the movable pulleys (31) and fixed pulleys (32) are connected by lifting ropes (3).
3. The fall arrest suspension device according to claim 2, characterized in that: The lifting mechanism also includes a movable block (33), the fixed pulley (32) is rotatably mounted on the movable block (33), the movable block (33) is slidably mounted on the crossbeam (2), the movable block (33) is equipped with a winch (34), and one end of the lifting rope (3) is mounted on the winch (34).
4. The fall arrest suspension device according to claim 1, characterized in that: The lower outer side of the inner locking piece (5) is provided with a first hook block (51), and the inner side of the bottom of the opening end of the hook (41) is provided with a second hook block (43). The first hook block (51) is hooked to the bottom of the second hook block (43).
5. The fall arrest suspension device according to claim 1, characterized in that: The bottom of the inner side of the hook (41) is provided with a slot (44).
6. The fall arrest suspension device according to claim 1, characterized in that: The bottom of the connection between the limiting block (42) and the hook (41) is an arc-shaped groove (45), which is engaged with the outer locking rod (64).
7. The fall arrest suspension device according to any one of claims 1-6, characterized in that: The inner locking piece (5) has a hook (52) on the upper end of the side near the outer locking rod (64). When the outer locking piece is unlocked from the hook (41), the outer locking rod (64) is hooked on the hook (52).
8. The fall arrest suspension device according to claim 7, characterized in that: A pull ring (65) is fitted onto the outer locking rod (64).