Anti-drop hook of crane

Abstract

The utility model relates to the technical field of building engineering, and specifically discloses a crane's anti -drop lifting hook, including the lifting hook body, the surface of lifting hook body is equipped with anti -drop mechanism, the anti -drop mechanism includes the fixed block fixedly connected in the surface of lifting hook body, the surface rotationally connected with first rotary lever of fixed block, the arc surface fixed connection has the block of first rotary lever, the arc surface of first rotary lever is covered with first torsional spring, and both ends of first torsional spring are fixedly connected with first rotary lever and fixed block respectively. The utility model discloses the elasticity of first torsional spring, can make the block tightly adhere in the hook mouth, reach the situation that prevents the goods from slipping and appears, through the adsorption between rectangular frame and block, and the location of rectangular frame to the bottom of block, further improve the stability of block position, make the block not easy to appear the condition of shaking, and under the engagement of the plug rod and the plug hole, further improve the stability of block.

Description

Technical Field

[0001] This utility model belongs to the field of construction engineering technology, and specifically relates to an anti-detachment hook for a crane. Background Technology

[0002] Cranes, as a type of heavy lifting equipment, are widely used in construction sites, docks, warehouses and other places. Their operation involves lifting, handling and hoisting heavy objects. In order to prevent the connection between the hook and the goods from loosening or breaking during operation and to prevent the goods from falling off accidentally, the hook is equipped with an anti-detachment structure.

[0003] Existing hooks are equipped with spring-driven pawls at the hook opening. In their natural state, the pawls fit snugly against the hook opening. When hooking the hook, the pawls need to be pushed away, and they automatically return to their original position after being released, in order to prevent the lifting device from slipping off. However, after prolonged use, the elasticity of the springs can easily decrease, causing the pawls to fail to fit tightly against the hook opening, resulting in gaps and making it easy for the cargo to slip off. Utility Model Content

[0004] The purpose of this utility model is to provide an anti-detachment hook for cranes, so as to solve the problem that gaps easily appear between the pawl and the hook mouth after long-term use of existing spring-type hooks.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An anti-detachment hook for a crane includes a hook body. The surface of the hook body is provided with an anti-detachment mechanism. The anti-detachment mechanism includes a fixing block fixedly connected to the surface of the hook body. A first rotating rod is rotatably connected to the surface of the fixing block. A stop block is fixedly connected to the arc surface of the first rotating rod. A first torsion spring is sleeved on the arc surface of the first rotating rod. The two ends of the first torsion spring are fixedly connected to the first rotating rod and the fixing block, respectively. An auxiliary mechanism is provided on the surface of the hook body. The auxiliary mechanism includes a sliding rod slidably connected to the surface of the hook body. A rectangular frame is fixedly connected to one end of the sliding rod near the stop block.

[0007] Preferably, the surface of the hook body is provided with a circular hole, the inner wall of the circular hole is slidably inserted with a rod, the arc surface of the rod is provided with a hole that matches the rod, and the top end of the rod is fixedly connected to a fixing plate.

[0008] Preferably, the bottom of the stop block is attached to the inner wall of the rectangular frame, the rectangular frame is a magnet, and the stop block is made of iron material.

[0009] Preferably, the inner wall of the circular hole is rotatably connected to two second rotating rods, and the arc surfaces of the two second rotating rods are fixedly connected to circular plates.

[0010] Preferably, a second torsion spring is fitted onto the arc surface of the second rotating rod, and the two ends of the second torsion spring are fixedly connected to the second rotating rod and the inner wall of the circular hole, respectively.

[0011] Preferably, an arc-shaped plate is fixedly connected to the side of the circular plate near the fixed plate.

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

[0013] 1. This utility model utilizes the elastic force of the first torsion spring to ensure that the stop block fits tightly against the hook opening, preventing the goods from slipping off. The adsorption between the rectangular frame and the stop block, as well as the limiting effect of the rectangular frame on the bottom of the stop block, further enhances the stability of the stop block position, making it less prone to shaking. Furthermore, the engagement of the insert rod and the insertion hole further improves the stability of the stop block, minimizing the possibility of shaking due to the weakening of the elastic force of the first torsion spring.

[0014] 2. This utility model, through the shielding of the circular plate, can minimize the occurrence of dust entering the circular hole, thereby minimizing the difficulty of the insertion rod sliding due to dust. Furthermore, by rotating the circular plate up and down, it cooperates with the fixing plate to achieve the effect of adjusting the position of the insertion rod. Attached Figure Description

[0015] Figure 1 This is one of the perspective views of this utility model;

[0016] Figure 2 This is a second perspective view of the present utility model;

[0017] Figure 3 This is a partial disassembled structural diagram of the stop block and slide bar of this utility model;

[0018] Figure 4 This utility model Figure 2 A schematic diagram of the cross-sectional structure;

[0019] Figure 5 This is a partial structural diagram of the circular plate and insert rod of this utility model.

[0020] In the diagram: 1. Hook body; 2. Anti-detachment mechanism; 201. Fixing block; 202. First rotating rod; 203. Stop block; 204. First torsion spring; 3. Auxiliary mechanism; 301. Sliding rod; 302. Rectangular frame; 303. Round hole; 304. Insert rod; 305. Fixing plate; 306. Insertion hole; 307. Second rotating rod; 308. Round plate; 309. Second torsion spring; 310. Arc plate. Detailed Implementation

[0021] 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.

[0022] Reference Figures 1-5 As shown, this utility model provides an anti-detachment hook for a crane, including a hook body 1. The surface of the hook body 1 is provided with an anti-detachment mechanism 2. The anti-detachment mechanism 2 includes a fixing block 201 fixedly connected to the surface of the hook body 1. A first rotating rod 202 is rotatably connected to the surface of the fixing block 201. A stop block 203 is fixedly connected to the arc surface of the first rotating rod 202. A first torsion spring 204 is sleeved on the arc surface of the first rotating rod 202. The two ends of the first torsion spring 204 are fixedly connected to the first rotating rod 202 and the fixing block 201, respectively.

[0023] In this embodiment, the first torsion spring 204 can be used to make the stop block 203 fit tightly against the hook opening, thereby preventing the goods from slipping off. This is existing technology and will not be described in detail here.

[0024] The surface of the hook body 1 is provided with an auxiliary mechanism 3. The auxiliary mechanism 3 includes a slide rod 301 that is slidably connected to the surface of the hook body 1. A rectangular frame 302 is fixedly connected to one end of the slide rod 301 near the stop block 203.

[0025] In an optional embodiment: a circular hole 303 is provided on the surface of the hook body 1, and a rod 304 is slidably inserted into the inner wall of the circular hole 303. The arc surface of the sliding rod 301 is provided with a socket 306 that matches the rod 304. A fixing plate 305 is fixedly connected to the top of the rod 304. The bottom of the stop block 203 is in contact with the inner wall of the rectangular frame 302. The rectangular frame 302 is a magnet, and the stop block 203 is made of iron material.

[0026] It should be noted that the bottom of the stop block 203 is attached to the inside of the rectangular frame 302, and with the engagement of the insert rod 304 and the insertion hole 306, the stability of the stop block 203 is further improved, and the wobbling of the stop block 203 due to the weakening of the elasticity of the first torsion spring 204 is avoided as much as possible.

[0027] In an optional embodiment: the inner wall of the circular hole 303 is rotatably connected to two second rotating rods 307, and the arc surfaces of the two second rotating rods 307 are fixedly connected to circular plates 308.

[0028] It should be noted that the circular plate 308 can minimize the entry of dust into the circular hole 303, thereby preventing the insertion rod 304 from becoming difficult to slide due to dust. Furthermore, the up-and-down rotation of the circular plate 308, in conjunction with the fixing plate 305, achieves the effect of adjusting the position of the insertion rod 304.

[0029] In an optional embodiment: a second torsion spring 309 is sleeved on the arc surface of the second rotating rod 307, and the two ends of the second torsion spring 309 are fixedly connected to the inner wall of the second rotating rod 307 and the circular hole 303, respectively.

[0030] It should be noted that, with the help of the elastic force of the second torsion spring 309, the circular plate 308 can rebound in time and block the circular hole 303.

[0031] In an optional embodiment, an arc-shaped plate 310 is fixedly connected to the side of the circular plate 308 near the fixed plate 305.

[0032] It should be noted that when the lower half of the circular plate 308 is pressed, the arc plate 310 will press against the bottom of the fixing plate 305 and lift upward, thereby disengaging the insertion rod 304 from the insertion hole 306.

[0033] The working principle of this utility model is as follows: During use, when hoisting goods, the operator presses the stop block 203, causing the first torsion spring 204 to be in a torsional state. The rope is then looped onto the hook body 1. Releasing the stop block 203, the rebound force of the first torsion spring 204 prevents the rope from slipping. Next, the operator pushes the slide rod 301 to move the rectangular frame 302. The bottom end of the stop block 203 will be inside the rectangular frame 302, and with the help of the magnetic force of the rectangular frame 302, the stop block 203 will adhere to the inside of the rectangular frame 302. Then, the operator presses the upper half of the circular plate 308. During the pressing process of the circular plate 308, the second… The torsion spring 309 will be in a torsional state, and the circular plate 308 will press against the fixed plate 305. The fixed plate 305 will drive the insertion rod 304 to move, and the insertion rod 304 will be inserted into the insertion hole 306 to stabilize the rectangular frame 302. After the circular plate 308 is released, the second torsion spring 309 will rebound, and the circular plate 308 will block the circular hole 303 again to prevent dust from entering the circular hole 303 and affecting the sliding of the insertion rod 304. Pressing the lower half of the circular plate 308 will cause the arc plate 310 to abut against the bottom of the fixed plate 305 and lift upward, so that the insertion rod 304 will disengage from the insertion hole 306.

[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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 connection that allows communication between them; 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] 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 specific embodiments or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, whether directly or indirectly applied to other related technical fields, are similarly within the scope of protection of this utility model patent.

Claims

1. A crane anti-detachment hook, comprising a hook body (1), wherein the surface of the hook body (1) is provided with an anti-detachment mechanism (2), the anti-detachment mechanism (2) comprising a fixing block (201) fixedly connected to the surface of the hook body (1), a first rotating rod (202) rotatably connected to the surface of the fixing block (201), a stop block (203) fixedly connected to the arc surface of the first rotating rod (202), a first torsion spring (204) sleeved on the arc surface of the first rotating rod (202), and both ends of the first torsion spring (204) being fixedly connected to the first rotating rod (202) and the fixing block (201) respectively, characterized in that, The surface of the hook body (1) is provided with an auxiliary mechanism (3), the auxiliary mechanism (3) includes a slide rod (301) slidably connected to the surface of the hook body (1), and a rectangular frame (302) is fixedly connected to one end of the slide rod (301) near the stop block (203).

2. The anti-detachment hook for a crane according to claim 1, characterized in that: The surface of the hook body (1) is provided with a circular hole (303), and a rod (304) is slidably inserted into the inner wall of the circular hole (303). The arc surface of the slide rod (301) is provided with a insertion hole (306) that matches the rod (304). A fixing plate (305) is fixedly connected to the top end of the rod (304).

3. The anti-detachment hook for a crane according to claim 1, characterized in that: The bottom of the stop (203) is attached to the inner wall of the rectangular frame (302), the rectangular frame (302) is a magnet, and the stop (203) is made of iron material.

4. The anti-detachment hook for a crane according to claim 2, characterized in that: The inner wall of the circular hole (303) is rotatably connected to two second rotating rods (307), and the arc surfaces of the two second rotating rods (307) are fixedly connected to circular plates (308).

5. The anti-detachment hook for a crane according to claim 4, characterized in that: The second rotating rod (307) has a second torsion spring (309) sleeved on its arc surface. The two ends of the second torsion spring (309) are fixedly connected to the second rotating rod (307) and the inner wall of the circular hole (303), respectively.

6. The anti-detachment hook of a crane according to claim 4, characterized in that: An arc-shaped plate (310) is fixedly connected to the side of the circular plate (308) near the fixed plate (305).

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