Safety lifting appliance for hoisting machinery

Abstract

The utility model discloses a safety lifting appliance for hoisting machinery, which comprises a vertical rod, a hook is integrally formed at the bottom end of the vertical rod, the top end of the vertical rod is obliquely arranged and is provided with a connecting hole, the outer wall of the vertical rod is slidably sleeved with a U-shaped plate, the bottom of the U-shaped plate is fixedly connected with two clamping plates, and the two clamping plates are fixedly connected with the bottom of the vertical rod. The two clamping plates are located on the two sides of the hook correspondingly, arc-shaped grooves are formed in the bottom ends of the clamping plates, and the open end of the U-shaped plate is detachably connected with an end plate. When the lifting appliance is used, after the connecting hole is connected with a steel wire rope of a hoisting machine, a lifting rope or a lifting lug with a lifted object is sleeved on the hook, then the U-shaped plate slides downwards on the vertical rod so as to clamp the lifting rope or the lifting lug between the arc-shaped groove and the hook, and then the hand-screwing bolt is screwed so as to lock the U-shaped plate on the vertical rod. The movable range of a lifting rope or a lifting lug of a lifted object in the hook can be effectively limited, so that the lifting stability is improved, the operation is simple, and the use is convenient.

Description

Technical Field

[0001] This utility model relates to a lifting device, specifically a safety lifting device for lifting machinery. Background Technology

[0002] Hooks are the most commonly used lifting tools in lifting machinery. Hooks are usually suspended from the wire rope of the lifting mechanism by means of pulley blocks or shackles. In order to prevent the lifted object from coming off the hook, some hooks are also equipped with movable baffles at the opening to prevent the lifting rope from coming off the hook. However, such hooks cannot limit the lifting rope of the lifted object, and the lifting rope has a large range of movement in the hook, resulting in poor stability.

[0003] A search revealed that patent CN220149010U discloses an anti-fall hook. This hook utilizes the cooperation of a screw, hook, arc-shaped groove plate, first threaded sleeve, and sleeve body. The screw drives the first threaded sleeve, sleeve body, and arc-shaped groove plate downwards. The arc-shaped groove plate can be moved to be placed between two sets of hooks, or the distance between the arc-shaped groove plate and the two sets of hooks can be adjusted. When an object is hung on the two sets of hooks, the arc-shaped groove plate, in conjunction with the hooks, clamps and secures the object at the hook position. This prevents the object from falling off and also prevents the object from swaying due to the inertia generated when the hook moves with the wire rope, resulting in relatively good transport stability.

[0004] While the above solution can use the cooperation between the arc-shaped groove plate and the two hooks to hold the lifting rope inside the hook and limit its range of motion, the arc-shaped groove plate is driven by the cooperation between the first threaded sleeve and the screw. Each time the lifting object is removed or installed on the hook, it takes a considerable amount of time to turn the screw, which is relatively slow and needs improvement. Utility Model Content

[0005] The purpose of this utility model is to provide a safety lifting device for lifting machinery to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A safety lifting device for lifting machinery includes a vertical rod with a hook integrally formed at the bottom end. The top end of the vertical rod is inclined and has a connecting hole. The outer wall of the vertical rod is slidably fitted with a U-shaped plate. Two clamping plates are fixedly connected to the bottom of the U-shaped plate, with the two clamping plates located on both sides of the hook. The bottom end of the clamping plates has an arc-shaped groove. An end plate is detachably connected to the open end of the U-shaped plate, and a hand-tightening bolt is inserted through a threaded hole on the end plate.

[0008] As a further embodiment of this utility model: the vertical rod is provided with a number of toothed grooves at equal intervals on the outer wall of the hand-tightening bolt, and the threaded end of the hand-tightening bolt is rotatably connected to a toothed block, the toothed block being adapted to the toothed groove.

[0009] As a further embodiment of this utility model: both sides of the outer wall of the vertical rod are provided with sliding grooves, and sliders are slidably arranged in the sliding grooves, and the sliders are detachably connected to the U-shaped plate.

[0010] As a further embodiment of this utility model: screws are provided at the corresponding positions of the outer wall of the U-shaped plate and the sliding groove, and the slider is connected to the screws through threaded holes.

[0011] As a further improvement of this utility model: multiple bolts are provided on the outer wall of the end plate, and the bolts are connected to the threaded holes on the end face of the U-shaped plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] In use, after connecting the connecting hole to the wire rope of the lifting machinery, the lifting rope or lifting lug with the load is put on the hook. Then, the U-shaped plate is slid down on the vertical rod to lock the lifting rope or lifting lug between the arc groove and the hook. Finally, the hand-tightened bolt is tightened to lock the U-shaped plate on the vertical rod. This effectively restricts the range of motion of the lifting rope or lifting lug within the hook, thereby improving the stability of the lifting operation. It is simple to operate and convenient to use. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a safety lifting device for lifting machinery.

[0015] Figure 2 for Figure 1 A sectional view.

[0016] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0017] Figure 4 This is a schematic diagram of the slider in a safety lifting device for lifting machinery.

[0018] Figure 5 This is a side view schematic diagram of a safety lifting device for lifting machinery.

[0019] Among them, 1 is the vertical rod, 2 is the hook, 3 is the connecting hole, 4 is the toothed groove, 5 is the U-shaped plate, 6 is the clamping plate, 7 is the arc groove, 8 is the end plate, 9 is the hand-tightening bolt, 10 is the toothed block, 11 is the sliding groove, 12 is the slider, and 13 is the screw. Detailed Implementation

[0020] 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.

[0021] Please see Figures 1-5 In this embodiment of the utility model, a safety lifting device for lifting machinery includes a vertical rod 1. The bottom end of the vertical rod 1 is integrally formed with a hook 2. The top end of the vertical rod 1 is inclined and has a connecting hole 3. The outer wall of the vertical rod 1 is slidably fitted with a U-shaped plate 5. The bottom of the U-shaped plate 5 is fixedly connected with two clamping plates 6, which are located on both sides of the hook 2. The bottom end of the clamping plates 6 has an arc-shaped groove 7. The open end of the U-shaped plate 5 is detachably connected with an end plate 8. A hand-tightening bolt 9 is fitted through a threaded hole on the end plate 8.

[0022] By adopting the above-mentioned solution, this utility model allows for the following operation: after connecting the connecting hole 3 to the wire rope of the lifting machinery, the lifting rope or lifting lug with the load is placed on the hook 2. Then, the U-shaped plate 5 is slid downwards on the vertical rod 1 to lock the lifting rope or lifting lug between the arc groove 7 and the hook 2. Finally, the hand-tightened bolt 9 is tightened to lock the U-shaped plate 5 onto the vertical rod 1. This effectively limits the range of motion of the lifting rope or lifting lug within the hook 2, thereby improving the stability of the lifting operation. The operation is simple and convenient.

[0023] Specific combination Figure 3 In one embodiment of this utility model, the vertical rod 1 is provided with a plurality of toothed grooves 4 at equal intervals on the outer wall of the hand-tightening bolt 9. The threaded end of the hand-tightening bolt 9 is rotatably connected to a toothed block 10. The toothed block 10 is adapted to the toothed grooves 4. Through the cooperation between the toothed block 10 and the toothed grooves 4, the hand-tightening bolt 9 is tightened, so that after the toothed block 10 is inserted into the toothed grooves 4, the reliability of the U-shaped plate 5 locking on the vertical rod 1 can be effectively improved.

[0024] Specific combination Figure 1 , Figure 2 , Figure 3 and Figure 4 In one embodiment of this utility model, the outer walls on both sides of the vertical rod 1 are provided with sliding grooves 11, and sliders 12 are slidably arranged in the sliding grooves 11. The sliders 12 are detachably connected to the U-shaped plate 5.

[0025] The cooperation between the groove 11 and the slider 12 can effectively improve the stability of the U-shaped plate 5 sliding on the vertical rod 1.

[0026] Specific combination Figure 4 Based on the previous embodiment, screws 13 are further provided at the corresponding positions of the outer wall of the U-shaped plate 5 and the slide groove 11. The slider 12 is connected to the screws 13 through the threaded hole. The cooperation between the screws 13 and the threaded hole facilitates the assembly and disassembly of the slider 12 on the U-shaped plate 5.

[0027] Specific combination Figure 4 In one embodiment of this utility model, a plurality of bolts are provided on the outer wall of the end plate 8, and the bolts are connected to the threaded holes on the end face of the U-shaped plate 5. The connection between the bolts and the threaded holes facilitates the disassembly and assembly of the end plate 8 at the end of the U-shaped plate 5.

[0028] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A safety lifting device for lifting machinery, characterized in that: The device includes a vertical rod (1), with a hook (2) integrally formed at the bottom end of the vertical rod (1). The top end of the vertical rod (1) is inclined and has a connecting hole (3) at the top end. The outer wall of the vertical rod (1) is slidably fitted onto a U-shaped plate (5). Two clamping plates (6) are fixedly connected to the bottom of the U-shaped plate (5). The two clamping plates (6) are located on both sides of the hook (2), and the bottom end of the clamping plates (6) has an arc groove (7). An end plate (8) is detachably connected to the open end of the U-shaped plate (5). A hand-tightening bolt (9) is fitted onto the end plate (8) through a threaded hole.

2. The safety lifting device for lifting machinery according to claim 1, characterized in that: The vertical rod (1) has several toothed grooves (4) equidistantly arranged on the outer wall of the hand-tightening bolt (9). The threaded end of the hand-tightening bolt (9) is rotatably connected to a toothed block (10), and the toothed block (10) is adapted to the toothed groove (4).

3. A safety lifting device for lifting machinery according to claim 1, characterized in that: The vertical rod (1) has grooves (11) on both outer walls, and sliders (12) are slidably installed in the grooves (11). The sliders (12) are detachably connected to the U-shaped plate (5).

4. A safety lifting device for lifting machinery according to claim 3, characterized in that: Screws (13) are inserted through the corresponding positions of the outer wall of the U-shaped plate (5) and the slide groove (11), and the slider (12) is connected to the screws (13) through the threaded hole.

5. A safety lifting device for lifting machinery according to claim 1, characterized in that: Multiple bolts are provided on the outer wall of the end plate (8), and the bolts are connected to the threaded holes on the end face of the U-shaped plate (5).

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