Anti-reverse-rotation and anti-falling lifting hook for electric hoist
By adopting the fastening bolt cross-insert installation and arc-shaped spring sleeve barrel structure on the electric hoist hook, the instability problem caused by the traditional hook due to rotation loosening and center of gravity offset is solved, and the anti-reversal and stable lifting of the hook is achieved.
Patent Information
- Application Number
- CN202422078924.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-08-27
AI Technical Summary
Traditional electric hoist hooks affect lifting stability due to the instability and risk of falling off caused by loose threaded connections and offset center of gravity of objects.
The hook structure is adopted for the cross-inserting installation of the fastening bolt, combining the arc spring and the resistive member of the socket barrel. The fastening bolt drives the socket barrel to rotate or slide to compress the spring, limit the deflection of the hook and ensure stability.
Effectively prevent the hook from loosening and deflecting, improve the stability of the lifting objects of the electric hoist, and avoid the risk of loosening and falling off caused by rotation of the traditional hook.
Smart Images
Figure CN223150073U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of electric hoists, in particular to a hook for an electric hoist that prevents reverse rotation and falling off. Background Technique
[0002] An electric hoist is a special lifting device installed on overhead cranes and gantry cranes. The electric hoist has the characteristics of small volume, light self-weight, simple operation, and convenient use. It is used in industrial and mining enterprises, warehousing, docks and other places. When installing hooks for common electric hoists, a threaded connection form is usually adopted, or bolts and nuts are used to fasten each other to fix the hook. However, since the hook generally hooks heavy objects for a long time, the downward pulling force on the hook is large, resulting in the loosening of the hook connected by simple threads and bolts after long-term use, and there is a risk of falling off. Moreover, when lifting an object, the object is prone to cause the hook to rotate due to the offset of the center of gravity, and then drive the problem that the object is lifted unevenly.
[0003] Therefore, it is necessary to provide a new hook for an electric hoist that prevents reverse rotation and falling off to solve the above technical problems. Content of the Utility Model
[0004] To solve the above technical problems, the utility model provides a hook for an electric hoist that prevents reverse rotation and falling off.
[0005] The hook for an electric hoist that prevents reverse rotation and falling off provided by the utility model includes:
[0006] A hook frame seat, and
[0007] A hook installed on the hook frame seat;
[0008] A U-shaped bottom frame is fixedly installed at the bottom of the hook frame seat, and through holes are opened on the horizontal plate of the U-shaped bottom frame;
[0009] An installation disk ring coaxial with the through hole is fixedly installed on the horizontal plate of the U-shaped bottom frame, and two groups of rotation prevention components for preventing the hook from reversing are arranged on the installation disk ring;
[0010] Wherein, the rotation prevention component includes a fixed plate and a butting seat. The fixed plate and the butting seat are both fixedly installed on the installation disk ring, and an arc-shaped spring coaxial with the through hole is fixedly installed on the fixed plate. The other end of the arc-shaped spring is fixedly installed with a socket cylinder, and the socket cylinder abuts against the butting seat.
[0011] Preferably, the fixed plate and the butting seat are distributed at 90°.
[0012] Preferably, a T-shaped slider is fixedly installed at the bottom of the socket cylinder, and the T-shaped slider is inserted into an arc-shaped T-slot opened on the installation disk ring and is slidably connected with the arc-shaped T-slot.
[0013] Preferably, the two groups of the anti-rotation components are distributed at 180° on the mounting disc ring.
[0014] Preferably, a plugging rod is fixedly installed at the top of the hook, and a through hole arranged radially is formed on the plugging rod.
[0015] Preferably, the plugging rod on the hook passes through the through hole formed on the U-shaped chassis, and the through hole on the plugging rod is coaxially arranged with the socket cylinders in the two groups of anti-rotation components and is connected by fastening bolts.
[0016] Preferably, a pulley is installed on the hook frame seat through a rotating shaft.
[0017] Compared with the related art, the hook for an electric hoist provided by the present utility model for preventing reverse rotation and falling off has the following beneficial effects:
[0018] 1. The hook in the present utility model is horizontally inserted and installed on two socket cylinders by fastening bolts, eliminating the hidden danger that the hook installed by threading on the electric hoist will become loose after long-term use due to the rotation of the hook.
[0019] 2. When the hook hoists an object and the hook rotates due to the offset of the center of gravity of the object, if the hook rotates clockwise, at this time, the fastening bolts drive the socket cylinders on both sides to rotate along the arc-shaped T-groove with the T-shaped sliders, so that the socket cylinders press the arc-shaped springs, and thus the compressed arc-shaped springs weaken the amplitude of the deflection of the hook caused by the offset of the center of gravity of the object, effectively ensuring the stability of the object hoisted by the electric hoist. If the hook rotates counterclockwise, the fastening bolts drive the socket cylinders on both sides to slide towards the abutting seat, and with the abutting of the socket cylinders by the abutting seat, the socket cylinders rebound after abutting against the abutting seat, and then the arc-shaped springs are compressed. Therefore, the amplitude of the deflection of the hook is weakened, further ensuring the stability of the object hoisted by the electric hoist. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 is a schematic structural diagram of a preferred embodiment of the hook for an electric hoist provided by the present utility model for preventing reverse rotation and falling off;
[0021] Figure 2 is Figure 1 the exploded structural diagram shown;
[0022] Figure 3 is Figure 2 the structural diagram of the hook frame seat shown;
[0023] Figure 4 is Figure 2 the installation structural diagram of the anti-rotation components on the mounting disc ring shown;
[0024] Figure 5 is Figure 4 the schematic diagram of the partial sectional structure shown;
[0025] Figure 6 is Figure 2 the schematic diagram of the structure of the hook shown.
[0026] Reference numerals in the figure: 1, hook frame seat; 11, U-shaped chassis; 11a, through hole; 12, pulley; 2, mounting disc ring; 2a, arc T-slot; 3, anti-rotation component; 31, fixing plate; 32, arc spring; 33, socket cylinder; 331, T-shaped slider; 34, abutting seat; 4, hook; 41, inserting rod; 41a, through hole; 5, fastening bolt. Specific embodiments
[0027] In order to make the objectives, technical solutions and advantages of the present utility model clearer and more understandable, the present utility model will be further described in detail below in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.
[0028] The following describes the specific implementation of the present utility model in detail in conjunction with specific embodiments.
[0029] Please refer to Figures 1 to 6 , a hook for an electric hoist that prevents reverse rotation and falling off provided by an embodiment of the present utility model, the hook for an electric hoist that prevents reverse rotation and falling off includes: a hook frame seat 1, an anti-rotation component 3, and a hook 4.
[0030] In an embodiment of the present utility model, please refer to Figures 1 to 6 , the hook 4 installed on the hook frame seat 1, specifically, the bottom of the hook frame seat 1 is fixedly installed with a U-shaped chassis 11, and a through hole 11a is opened on the horizontal plate of the U-shaped chassis 11, and an installation disc ring 2 coaxially arranged with the through hole 11a is fixedly installed on the horizontal plate of the U-shaped chassis 11, and two groups of anti-rotation components 3 for preventing the hook 4 from reversing are arranged on the installation disc ring 2, and the two groups of anti-rotation components 3 are distributed at 180° on the installation disc ring 2;
[0031] The anti-rotation component 3 includes a fixing plate 31 and an abutting seat 34. The fixing plate 31 and the abutting seat 34 are both fixedly installed on the installation disc ring 2, and the fixing plate 31 and the abutting seat 34 are distributed at 90°. An arc spring 32 coaxially arranged with the through hole 11a is fixedly installed on the fixing plate 31. The other end of the arc spring 32 is fixedly installed with a socket cylinder 33, and a T-shaped slider 331 is fixedly installed at the bottom of the socket cylinder 33, and the T-shaped slider 331 is inserted into the arc T-slot 2a opened on the installation disc ring 2 and is slidably connected with the arc T-slot 2a, and the socket cylinder 33 abuts against the abutting seat 34;
[0032] A plugging rod 41 is fixedly installed at the top of the hook 4, and a radially arranged through hole 41a is formed in the plugging rod 41. The plugging rod 41 on the hook 4 passes through a through hole 11a formed in the U-shaped chassis 11, and the through hole 41a on the plugging rod 41 is coaxially arranged with the socket cylinders 33 in the two anti-rotation components 3 and is connected by a fastening bolt 5.
[0033] It should be noted that when installing the hook 4, the plugging rod 41 on the hook 4 is passed through from the bottom of the through hole 11a formed in the U-shaped chassis 11 until the through hole 41a on the plugging rod 41 is coaxially arranged with the socket cylinders 33 in the two anti-rotation components 3. Then, the fastening bolt 5 is sequentially passed through a socket cylinder 33 on one side, the through hole 41a on the plugging rod 41, and a socket cylinder 33 on the other side and fixed with a nut, and thus the installation of the hook 4 on the hook frame base 1 can be completed. When disassembling the hook 4, after unscrewing the nut and taking out the fastening bolt 5, the installation and disassembly of the hook 4 on the hook frame base 1 can be completed. The hook 4 is horizontally inserted and installed on the two socket cylinders 33 by the fastening bolt 5, eliminating the hidden danger that the hook installed by threading on the electric hoist will become loose after long-term use due to the rotation of the hook.
[0034] When the hook 4 rotates due to the offset of the center of gravity of the lifted object (taking... Figure 4 ... as an example for illustration), if the hook 4 rotates clockwise, at this time, the fastening bolt 5 drives the socket cylinders 33 on both sides to rotate along the arc-shaped T-groove 2a with the T-shaped sliders 331, so that the socket cylinders 33 press the arc-shaped springs 32, and thus the compressed arc-shaped springs 32 weaken the deflection amplitude of the hook 4 caused by the offset of the center of gravity of the object, effectively ensuring the stability of the object lifted by the electric hoist. If the hook 4 rotates counterclockwise, the fastening bolt 5 drives the socket cylinders 33 on both sides to slide towards the abutting seat 34, and the socket cylinders 33 are abutted by the abutting seat 34. Thus, after the socket cylinders 33 are abutted against the abutting seat 34 and rebound, the arc-shaped springs 32 are compressed, thereby weakening the deflection amplitude of the hook 4 and further ensuring the stability of the object lifted by the electric hoist.
[0035] Wherein, a pulley 12 is installed on the hook frame base 1 through a rotating shaft, which is convenient for connecting with the lifting steel wire rope on the electric hoist.
[0036] The above are only the embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structure or equivalent process transformation made by using the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.
Claims
1. A hook for an electric hoist that prevents reverse rotation and falling off, characterized in that, Including: A hook frame base (1), and A lifting hook (4) installed on the hook frame base (1); The bottom of the hook frame base (1) is fixedly installed with a U-shaped bottom frame (11), and a through hole (11a) is provided on the horizontal plate of the U-shaped bottom frame (11); An installation disc ring (2) coaxial with the through hole (11a) is fixedly installed on the horizontal plate of the U-shaped bottom frame (11), and two groups of anti-rotation components (3) for preventing the lifting hook (4) from reversing are provided on the installation disc ring (2); Wherein, the anti-rotation component (3) includes a fixing plate (31) and a mating seat (34), the fixing plate (31) and the mating seat (34) are both fixedly installed on the installation disc ring (2), and an arc-shaped spring (32) coaxial with the through hole (11a) is fixedly installed on the fixing plate (31), the other end of the arc-shaped spring (32) is fixedly installed with a socket cylinder (33), and the socket cylinder (33) abuts against the mating seat (34).
2. The hook for an electric hoist that prevents reverse rotation and detachment according to claim 1, wherein, The fixing plate (31) and the mating seat (34) are distributed at 90°.
3. The hook for an electric hoist that prevents reverse rotation and detachment according to claim 2, wherein A T-shaped slider (331) is fixedly installed at the bottom of the socket cylinder (33), and the T-shaped slider (331) is inserted into an arc-shaped T-slot (2a) opened on the installation disc ring (2) and is slidably connected with the arc-shaped T-slot (2a).
4. The hook for an electric hoist that prevents reverse rotation and detachment according to claim 3, wherein, The two groups of anti-rotation components (3) are distributed at 180° on the installation disc ring (2).
5. The hook for an electric hoist that prevents reverse rotation and detachment according to claim 1, wherein, A plugging rod (41) is fixedly installed at the top of the lifting hook (4), and a radially arranged through hole (41a) is provided on the plugging rod (41).
6. The hook for an electric hoist that prevents reverse rotation and falling off according to claim 5, characterized in that, The plugging rod (41) on the lifting hook (4) passes through the through hole (11a) opened on the U-shaped bottom frame (11), and the through hole (41a) on the plugging rod (41) is coaxial with the socket cylinder (33) in the two groups of anti-rotation components (3) and is connected by a fastening bolt (5).
7. The hook for an electric hoist that prevents reverse rotation and detachment according to claim 1, wherein, A pulley (12) is installed on the hook frame base (1) through a rotating shaft.