CN219362984U - Self-locking chain ring safety hook - Google Patents

Abstract

The application relates to the technical field of hooks, in particular to a self-locking chain ring safety hook which is convenient to cooperate with a chain to hoist through arranging a semicircular ring, and has less damage to the chain; the lock tongue is arranged in the opening of the hook body, so that the chain ring entering the hook groove is automatically locked, the working steps before hoisting are reduced, and the working efficiency is improved; the lock tongue is located the hook mouth, and after the automatic locking chain ring, the chain ring also can play the guard action to it, and the external force can't touch the lock tongue, and the security performance improves greatly, eliminates the potential safety hazard.

Description

Self-locking chain ring safety hook

Technical Field

The application relates to the technical field of hooks, in particular to a self-locking chain ring safety hook.

The background technology is as follows:

the national utility model patent with the application number of 201420251202.9 of the company, namely a safety pin type claw hook, comprises a claw connecting fork head and a hook body, wherein a safety pin hole is formed in the connecting part of the hook body and the claw connecting fork head, a safety pin is arranged in the safety pin hole, and the safety pin controls the opening and closing of a hook opening.

Above patent is when in actual use, needs the workman to pull the safety pin outward with one hand, and the other hand is with the chain hook in the coupler body, and the operation is inconvenient, and is located the safety pin of coupler opening top and touches under the exogenic action easily and open, has certain potential safety hazard.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a self-locking chain ring safety hook, which solves the technical problems that: the hanging of the chain is inconvenient and has a certain potential safety hazard. In order to solve the technical problems, the utility model adopts the following technical scheme:

a self-locking link safety hook comprising:

the semicircular ring, the pin shaft and the wing hook body are connected through the pin shaft;

the through hole is formed in the hook body below the opening of the wing hook body;

the lock tongue is connected with the through hole in a sliding structure mode, and the upper end face of the lock tongue is provided with an inclined plane inclined towards one side of the opening of the wing hook body;

the fixing piece is arranged in the through hole at the lower part of the lock tongue;

one end of the pull rod is connected with the bottom end surface of the lock tongue in a fixed structure mode, and the other end of the pull rod penetrates through the fixing piece and extends out of the through hole;

the spring is sleeved outside the pull rod, one end of the spring is contacted with the bottom end surface of the lock tongue, and the other end of the spring is contacted with the fixing piece.

Further, the hook bodies at the two sides of the opening bottom of the wing hook body are fixedly provided with lug bosses in the shape of wings.

Further, the through hole is cylindrical, and a guide groove is formed in one side of the through hole;

the lock tongue comprises a cylindrical lock body, a sliding block is fixedly arranged on the circumferential wall of the cylindrical lock body, and the sliding block is connected with the guide groove in a sliding structure mode.

Further, the inner wall of the lower part of the through hole is provided with a screw;

the periphery wall of the fixing piece is provided with threads meshed with the screws.

Further, one end of the pull rod extending out of the through hole is fixedly provided with a cover body, and the inner end surface of the cover body is attached to the outer wall of the wing hook body.

The beneficial effects of the utility model are as follows: the semicircular ring is arranged, so that the lifting work is conveniently carried out by being matched with a chain, and the damage to the chain is small; the lock tongue is arranged in the opening of the hook body, so that the chain ring entering the hook groove is automatically locked, the working steps before hoisting are reduced, and the working efficiency is improved; the lock tongue is located the hook mouth, and after the automatic locking chain ring, the chain ring also can play the guard action to it, and the external force can't touch the lock tongue, and the security performance improves greatly, eliminates the potential safety hazard.

Drawings

Fig. 1 is a schematic diagram of the front view structure of the present utility model.

Fig. 2 is a right-side view of the present utility model.

In the figure:

1. the novel lock comprises a chain ring, 2, a pin shaft, 3, a through hole, 4, a hook body, 51, a cylindrical lock body, 52, a sliding block, 6, an inclined plane, 7, a fixing piece, 8, a pull rod, 9, a spring, 10, a boss, 11, a guide groove, 12 and a cover body.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will now be described in further detail with reference to the accompanying drawings and the following examples, so that the public can better understand the method of practicing the present utility model, and the specific embodiments of the present utility model are as follows:

a self-locking link safety hook comprising: the novel wing-shaped bicycle comprises a semicircular ring 1, a pin shaft 2 and wing hooks, wherein the semicircular ring 1 is connected with the wing hooks through the pin shaft 2, wing-shaped bosses 10 are fixedly arranged on the hooks 4 on two sides of the bottom of an opening of the wing hooks, the opening of the wing hooks is clamped with middle chain rings, the bosses 10 can be used for clamping the chain rings on two sides of the middle chain rings to prevent the chain rings from shaking, the through holes 3 are formed in the hooks 4 below the opening of the wing hooks, a lock tongue is connected with the through holes 3 in a sliding structure mode, inclined planes 6 inclined towards one side of the opening of the wing hooks are arranged on the upper end faces of the lock tongue, fixing pieces 7 are arranged in the through holes 3 on the lower parts of the lock tongue, one ends of pull rods 8 are connected with the bottom end faces of the lock tongue in a fixed structure mode, and the other ends of the pull rods 8 penetrate through the fixing pieces 7 to extend out of the through holes 3; the spring 9 is sleeved outside the pull rod 8, one end of the spring 9 is contacted with the bottom end surface of the lock tongue, and the other end is contacted with the fixing piece 7. The lock tongue is arranged in the opening of the hook body, so that the chain ring entering the hook groove is automatically locked, the working steps before hoisting are reduced, and the working efficiency is improved; the lock tongue is located the hook mouth, and after the automatic locking chain ring, the chain ring also can play the guard action to it, and the external force can't touch the lock tongue, and the security performance improves greatly, eliminates the potential safety hazard.

Specifically, the through hole 3 is cylindrical, drilling processing is facilitated, and a guide groove 11 is formed in one side of the through hole 3; the spring bolt includes cylinder lock body 51, and cylinder lock body 51 circumference wall is fixed to be provided with slider 52, and slider 52 links to each other with guide way 11 in the sliding structure mode, and slider 52 and guide way 11's cooperation can prevent that the spring bolt from rotating, avoids the inclined plane not towards the opening part.

The inner wall of the lower part of the through hole 3 is provided with a screw; the screw thread engaged with the screw is provided on the outer peripheral wall of the fixing member 7, that is, the fixing member 7 can be detached, so that the assembly of the inner cylindrical lock body 51 and the pull rod spring 9 is facilitated.

It should be noted that, the one end that pull rod 8 stretches out through-hole 3 is fixed and is provided with lid 12, and the workman pulls the spring bolt through lid 12, unlocks it, and the terminal surface is laminated mutually with wing hook body outer wall in the lid 12, reduces the space occupation.

The working principle and working process of the utility model are as follows: firstly, one chain ring is placed in a groove of the hook body 4, when the chain ring slides towards the bottom of the hook body 4, the inclined surface 6 of the lock tongue 51 is touched, the lock tongue 51 is forced to drive the sliding block 52, the pull rod 8 and the cover body 12 to slide towards the lower part of the through hole 3, at the moment, the spring 9 is compressed under the action of the lock tongue 51 and the fixing piece 7, and when one side of the chain ring completely passes through, the spring 9 ejects the lock tongue 51 to prevent the chain ring from sliding out of the hook body 4 due to the elasticity of the spring 9.

After the hoisting is completed, a worker pulls the cover body 12, and the cover body 12 pulls the lock tongue 51 into the through hole 3 through the pull rod 8 to release the chain.

In describing the present utility model, it should be understood that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "front", "rear", "lower left", "upper right", "outer", "clockwise", "counterclockwise", etc. are based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the scope of the present utility model. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. While the utility model has been described with respect to a limited number of embodiments, those skilled in the art, having benefit of the above description, will appreciate that other embodiments are contemplated within the scope of the utility model as described herein.

Claims (5)

1. A self-locking safety hook for a chain link, comprising:

the wing-shaped device comprises a semicircular ring (1), a pin shaft (2) and a wing hook body, wherein the semicircular ring (1) is connected with the wing hook body through the pin shaft (2);

the through hole (3) is formed in the hook body (4) below the opening of the wing hook body;

the lock tongue is connected with the through hole (3) in a sliding structure mode, and the upper end face of the lock tongue is provided with an inclined plane (6) inclined towards one side of the opening of the wing hook body;

the fixing piece (7), the fixing piece (7) is arranged in the through hole (3) at the lower part of the lock tongue;

one end of the pull rod (8) is connected with the bottom end surface of the lock tongue in a fixed structure mode, and the other end of the pull rod (8) penetrates through the fixing piece (7) and extends out of the through hole (3);

the spring (9) is sleeved outside the pull rod (8), one end of the spring (9) is contacted with the bottom end surface of the lock tongue, and the other end of the spring is contacted with the fixing piece (7).

2. The self-locking safety hook of claim 1, wherein: the hook bodies (4) at two sides of the bottom of the opening of the wing hook body are fixedly provided with lug bosses (10) which are wing-shaped.

3. The self-locking safety hook of claim 1, wherein: the through hole (3) is cylindrical, and a guide groove (11) is arranged at one side of the through hole (3);

the lock tongue comprises a cylindrical lock body (51), a sliding block (52) is fixedly arranged on the circumferential wall of the cylindrical lock body (51), and the sliding block (52) is connected with the guide groove (11) in a sliding structure mode.

4. A self-locking safety hook as claimed in claim 3, wherein: screws are arranged on the inner wall of the lower part of the through hole (3);

the outer peripheral wall of the fixing piece (7) is provided with threads meshed with the screw.

5. The self-locking safety hook of claim 1, wherein: one end of the pull rod (8) extending out of the through hole (3) is fixedly provided with a cover body (12), and the inner end surface of the cover body (12) is attached to the outer wall of the wing hook body.