CN210232832U

CN210232832U - Automatic locking chain wrench

Info

Publication number: CN210232832U
Application number: CN201822015650.XU
Authority: CN
Inventors: Zhiqian Wu; 吴志铅
Original assignee: Xiamen Zhongzhida Internet Finishing Work Co ltd
Current assignee: Xiamen Zhongzhida Internet Finishing Work Co ltd
Priority date: 2018-12-03
Filing date: 2018-12-03
Publication date: 2020-04-03
Anticipated expiration: 2028-12-03

Abstract

The utility model discloses an automatic chain spanner of locking, including the main part of rod, support pressure head and chain, support the front end of pressure head welding at the main part of rod, and the front end side welding that supports the pressure head has first connecting block, and movable sleeve has the removal circle on the pole wall of the main part of rod, and the internal diameter of removing the circle slightly is greater than the pole wall external diameter of the main part of rod, and has the second connecting block in the side welding that removes the circle, and the one end of chain is connected on first connecting block, and the other end is connected on the second connecting block after bypassing the front end of supporting the pressure head. The utility model has the advantages that the finished product can be manufactured by selecting waste materials such as iron rods, nuts, chains and the like, thereby realizing waste utilization and reducing the production cost; the screwing tool can be suitable for parts such as nuts, bolts, circular-wall pipes and the like with different specifications and types, and the screwing process does not need to be repeated in the operation of putting on and taking off, so that the time and the labor are saved; the part can be automatically locked and clamped when force is applied, so that the relative sliding of the chains is effectively avoided, and the working efficiency is improved.

Description

Automatic locking chain wrench

Technical Field

The utility model relates to a spanner technical field, concretely relates to automatic chain spanner of locking.

Background

The wrench is an essential tool in the process of maintenance and repair, but due to the limitations of wrench types, operating environments and the like, the condition that the conventional wrench cannot work often occurs. For example, conventional wrenches often cannot operate when nuts, bolts of a particular size or type are used, or when round-walled tubes are to be tightened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an automatic chain spanner who locks, it can be applicable to the nut or the bolt of different specifications, type, can also be applicable to the body of circle wall type to can realize automatic locking when twisting and move.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

an automatic locking chain wrench comprises a main rod body, a pressing head and a chain, wherein the pressing head is welded at the front end of the main rod body, a first connecting block is welded on the side edge of the front end of the pressing head, a moving ring is movably sleeved on the rod wall of the main rod body, the inner diameter of the moving ring is slightly larger than the outer diameter of the rod wall of the main rod body, a second connecting block is welded on the side edge of the moving ring, one end of the chain is connected to the first connecting block, and the other end of the chain is connected to the second connecting block after bypassing the front end of the pressing head;

two symmetrical longitudinal grooves are formed in the rod wall of the main rod body, two longitudinal keys are arranged on the inner wall of the moving ring, and the longitudinal keys are correspondingly clamped in the longitudinal grooves respectively;

and one side of the moving ring opposite to the second connecting block is provided with a threaded through hole, and a fastening nut is arranged in the threaded through hole.

The further improvement is that the distance between the welding position of the first connecting block and the front end of the pressing head is 0.5-1.5 cm.

The further improvement is that the rear end of the main rod body is sleeved with a rubber handle.

The further improvement lies in that the front end face of the pressure resisting head is provided with a chamfer face, and the chamfer face faces to the opposite direction of the first connecting block.

The further improvement lies in that the included angle between the chamfer and the front end face of the pressure resisting head is 30 degrees.

The further improvement is that the moving ring is made of a hexagonal nut.

The beneficial effects of the utility model reside in that:

(1) waste materials such as iron rods, nuts, chains and the like are selected, and finished products can be manufactured through simple welding and processing, so that waste utilization is realized, and the production cost is reduced;

(2) the chain wrench can be suitable for nuts, bolts, round-wall pipes and the like with different specifications and types, and the operations of sleeving and taking off are not required to be repeated in the screwing process, so that time and labor are saved;

(3) by adopting the specific structure, the chain can automatically lock and clamp the part to be twisted when force is applied, so that the relative sliding of the chain on the part is effectively avoided, and the working efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a moving ring and related components;

fig. 3 is a schematic structural view of the present invention in a use state;

in the figure: the device comprises a main rod body 1, a pressure resisting head 2, a chain 3, a first connecting block 4, a moving ring 5, a second connecting block 6, a longitudinal groove 7, a longitudinal key 8, a fastening nut 9, a rubber handle 10 and a chamfer 11.

Detailed Description

The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.

Combine shown in fig. 1 and fig. 2, an automatic chain spanner structure of locking, including the mobile jib body 1, support pressure head 2 and chain 3, it welds the front end at the mobile jib body 1 to support pressure head 2, and the front end side welding that supports pressure head 2 has first connecting block 4, movable sleeve has removal circle 5 on the pole wall of mobile jib body 1, the internal diameter of removal circle 5 slightly is greater than the pole wall external diameter of the mobile jib body 1, and it has second connecting block 6 to weld at the side of removal circle 5, the one end of chain 3 is connected on first connecting block 4, the other end is walked around and is connected on second connecting block 6 behind the front end of pressure head 2. Two symmetrical longitudinal grooves 7 are formed in the wall of the main rod body 1, two longitudinal keys 8 are arranged on the inner wall of the moving ring 5, and the longitudinal keys 8 are correspondingly clamped in the longitudinal grooves 7 respectively, so that the moving ring 5 cannot rotate when moving back and forth, the chain 3 is guaranteed to be bent and deformed in the same plane all the time, and the chain 3 is prevented from being damaged. One side of the moving ring 5 opposite to the second connecting block 6 is provided with a threaded through hole, a fastening nut 9 is arranged in the threaded through hole, and the fastening nut 9 is used for locking the position of the moving ring 5.

As an embodiment structure, the welding position of the first connecting block 4 is 0.5-1.5cm, generally 1cm away from the front end of the pressure head 2.

As an embodiment structure, the rear end of the main rod body 1 is sleeved with a rubber handle 10 for facilitating force application.

As an embodiment structure, the front end face of the abutting head 2 is provided with a chamfer 11, the chamfer 11 faces the opposite direction of the first connecting block 4, and the optimal included angle between the chamfer 11 and the front end face of the abutting head 2 is 30 degrees.

As an embodiment structure, the moving ring 5 is made of a hexagonal nut.

Referring to fig. 3, the nut is screwed. Firstly, a chain 3 is sleeved on a nut, the sleeving direction needs to be noticed, and the direction of force needed to be applied when the main rod body 1 is pulled towards the direction a in the drawing to screw (no matter screwing or unscrewing) the nut needs to be ensured; then the front end of the pressing head 2 is pressed on the nut, the position of the moving ring 5 on the main rod body 1 is adjusted, the chain 3 is tensioned without being particularly tightened, and the moving ring 5 is locked by a fastening nut 9. When screwing the nut in the a direction in the picture, because first connecting block 4 is nearer apart from the nut for the chain 3 of chucking part leans on the one end of first connecting block 4 almost, the pulling of the owner body of rod 1 can make second connecting block 6 form the pulling force to chain 3, and the pulling force that chain 3 received is big more, gets tighter to the nut card, thereby realizes the automatic locking function, guarantees that chain 3 can not take place to slide. If the space allows, directly once only twist the position, if the space is restricted, need not to adjust the position of moving circle 5 this moment, also need not to take off chain 3, only need simultaneously to pull towards b direction in the picture, on one side will support pressure head 2 from the nut gliding can, chain 3 is lax relatively this moment, can rotate to initial position under the prerequisite of not moving the nut, will support pressure head 2 and support on the nut next, and the process of pulling is repeated until accomplishing screwing of nut. The chamfer 11 is designed to assist in sliding down and up against the ram 2.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention.

Claims

1. An automatic chain spanner who locks which characterized in that: the anti-collision device comprises a main rod body (1), a pressing head (2) and a chain (3), wherein the pressing head (2) is welded at the front end of the main rod body (1), a first connecting block (4) is welded on the side edge of the front end of the pressing head (2), a moving ring (5) is movably sleeved on the rod wall of the main rod body (1), the inner diameter of the moving ring (5) is slightly larger than the outer diameter of the rod wall of the main rod body (1), a second connecting block (6) is welded on the side edge of the moving ring (5), one end of the chain (3) is connected to the first connecting block (4), and the other end of the chain is connected to the second connecting block (6) after bypassing the front end of the pressing head (2);

two symmetrical longitudinal grooves (7) are formed in the wall of the main rod body (1), two longitudinal keys (8) are arranged on the inner wall of the moving ring (5), and the longitudinal keys (8) are correspondingly clamped in the longitudinal grooves (7) respectively;

and a threaded through hole is formed in one side of the moving ring (5) opposite to the second connecting block (6), and a fastening nut (9) is arranged in the threaded through hole.

2. An automatic locking chain wrench as claimed in claim 1, wherein: the distance between the welding position of the first connecting block (4) and the front end of the pressure resisting head (2) is 0.5-1.5 cm.

3. An automatic locking chain wrench as claimed in claim 1, wherein: the rear end of the main rod body (1) is sleeved with a rubber handle (10).

4. An automatic locking chain wrench as claimed in claim 1, wherein: the front end face of the pressure resisting head (2) is provided with a chamfer face (11), and the chamfer face (11) faces to the opposite direction of the first connecting block (4).

5. An automatic locking chain wrench as claimed in claim 4, wherein: the included angle between the inclined cutting surface (11) and the front end face of the abutting head (2) is 30 degrees.

6. An automatic locking chain wrench as claimed in claim 1, wherein: the moving ring (5) is made of a hexagonal nut.