CN211332959U - Novel chain wrench - Google Patents

Abstract

A new type of chain wrench comprises a round tube, a sleeve and a chain; the round tube is a hollow hollow tube inside; one end of the round tube is provided with a first connecting piece; the sleeve is sleeved on the round tube, and the sleeve follows the circular The pipes are connected by sliding; the bottom of the casing is provided with a second connecting piece; the two ends of the chain are respectively fixedly connected with the first connecting piece and the second connecting piece; A limit groove is formed; a threaded hole is arranged in the middle of the limit frame; a fastening bolt is arranged on the sleeve, and a through hole for the fastening bolt to pass through is arranged on the sleeve; a limit ring is arranged at the bottom of the fastening bolt to limit the The ring is fixedly arranged at the bottom of the fastening bolt; the limit ring is located between the limit frame and the sleeve, and is located in the limit groove; the utility model can adjust the chain to a suitable length according to the diameter of the bolt, and can adjust the length of the chain according to the diameter of the bolt. All bolts can be applied; the carrying amount of the required wrench is reduced, and it is convenient to carry.

Description

A new type of chain wrench

technical field

The utility model relates to the technical field of hardware tools, in particular to a novel chain wrench.

Background technique

A wrench is a commonly used installation and removal tool. It is a hand tool that uses the principle of leverage to turn bolts, screws, nuts and other threaded fastening bolts or nuts. Wrenches are usually made of carbon or alloy structural steel. The wrench usually has openings or sleeve holes for holding the bolt or nut at one or both ends of the handle. When in use, the bolt or nut can be rotated by applying an external force on the handle along the direction of thread rotation. The tightening and dismantling are frequently encountered tasks. Due to the large number of bolt specifications, the existing finished wrenches on the market are basically of fixed size except for the open-end wrench, so it is often necessary to bring a tool bag in the actual work process. Large and small wrenches; covers a large area, and is heavy and inconvenient to carry.

In order to solve the above problems, a novel chain wrench is proposed in this application.

Utility model content

(1) Purpose of utility model

In order to solve the problem in the background art, due to the large number of bolt specifications, the existing finished wrenches on the market are basically of fixed size except for the adjustable wrench, so in the actual work process, it is often necessary to bring a tool bag of large and small wrenches. The technical problem of large floor space and inconvenient to carry at the same time, the utility model proposes a new type of chain wrench, the utility model can adjust the chain to a suitable length according to the diameter of the bolt, and can be applied to bolts of different sizes; The carrying amount of the required wrench is reduced, and it is convenient to carry.

(2) Technical solutions

In order to solve the above problems, the utility model provides a novel chain wrench, which includes a round pipe, a sleeve and a chain;

The circular tube is a hollow circular tube with a hollow interior; one end of the circular tube is provided with a first connector; the sleeve is sleeved on the circular tube, and the sleeve is slidably connected along the circular tube; the sleeve The bottom of the pipe is provided with a second connecting piece; the two ends of the chain are respectively fixedly connected with the first connecting piece and the second connecting piece;

The inside of the sleeve is provided with a limit frame, and the limit frame is set in a "Zhong" shape, and the limit frame and the inner wall of the sleeve form a limit groove; the middle of the limit frame is provided with a threaded hole The sleeve is provided with a fastening bolt, and the sleeve is provided with a through hole for the fastening bolt to pass through; the inner wall of the through hole is provided with a threaded groove, and the fastening bolt is connected with the through hole. The hole is matched with the screw connection; the bottom of the fastening bolt is provided with a limit ring, and the limit ring is fixedly arranged on the bottom of the fastening bolt; the limit ring is located between the limit frame and the sleeve, and is located in the limit in the slot.

Preferably, a sheath is provided at one end of the circular tube away from the first connecting piece, and the sheath is adhesively connected to the circular tube.

Preferably, a plurality of anti-skid protrusions are provided on the sheath.

Preferably, the circular tube is provided with a plurality of grooves which are matched with the fastening bolts.

Preferably, the bottom of the fastening bolt is provided with a buffer pad, and the buffer pad is an elastic pad.

Preferably, both the round tube and the sleeve are thick-walled tubes.

Preferably, the chain is connected with the first connector and the second connector by welding.

The above-mentioned technical solutions of the present invention have the following beneficial technical effects: in the present invention, discarded round pipes, casings and chains are used for production; the difficulty of manual production is small, and the use is convenient; Fasten the bolt, the bottom of the fastening bolt does not contact the round tube; at this time, the sleeve can slide back and forth along the round tube, and the chain remains loose; put the chain on the bolt that needs to be tightened or loosened, and turn the sleeve towards the The sheath slides in the direction, so that the chain is kept fixed around the outer circumference of the bolt, and the end of the round tube away from the sheath is in contact with the bolt to maintain the clamping state; tighten the fastening bolt on the sleeve, and the bottom of the fastening bolt is The chain and the bolt are fixed by the over-limiting frame and the groove on the round tube; at this time, hold the sheath on the round tube and turn it clockwise or counterclockwise to loosen or tighten the bolt; In the present utility model, a limit frame is arranged inside the sleeve, and the limit frame is set in a "Bang" shape. The limit frame and the inner wall of the sleeve form a limit groove, and the bottom of the fastening bolt A limit ring is provided, and the limit ring is fixedly arranged at the bottom of the fastening bolt; the limit ring is located between the limit frame and the sleeve, and is located in the limit groove; the fastening bolt is loosened or tightened. During the process, the limit ring is always located in the limit groove, the fastening bolt will not fall off the casing, and the use is more convenient; the utility model can adjust the chain to an appropriate length according to the diameter of the bolt, and can be used for bolts of different sizes. Applicable; it reduces the carrying amount of the required wrench and is convenient to carry.

Description of drawings

FIG. 1 is a schematic structural diagram of a novel chain wrench proposed by the utility model.

FIG. 2 is a schematic diagram of the installation structure of the novel chain wrench proposed by the utility model in a state where the fastening bolts are loosened.

FIG. 3 is a schematic diagram of the installation structure of the novel chain wrench proposed by the utility model in a state where the fastening bolts are locked.

4 is a schematic diagram of the position structure of the groove in the novel chain wrench proposed by the present invention.

Reference numerals: 1. Round pipe; 2. Chain; 3. First connecting piece; 4. Second connecting piece; 5. Sleeve; 6. Fastening bolt; 7. Sheath; 8. Limiting ring; 9 , limit frame; 10, cushion; 11, groove.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present utility model more clear, the present utility model will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only, and are not intended to limit the scope of the present invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

As shown in Figures 1-4, a novel chain wrench proposed by the present utility model includes a round pipe 1, a sleeve 5 and a chain 2;

The circular tube 1 is a hollow circular tube 1 with a hollow interior; one end of the circular tube 1 is provided with a first connector 3; the sleeve 5 is sleeved on the circular tube 1, and the sleeve 5 follows the The pipe 1 is slidably connected; the bottom of the sleeve 5 is provided with a second connecting piece 4 ; the two ends of the chain 2 are fixedly connected with the first connecting piece 3 and the second connecting piece 4 respectively;

The inside of the sleeve 5 is provided with a limit frame 9, and the limit frame 9 is set in a "Bang" shape, and the limit frame 9 and the inner wall of the sleeve 5 form a limit groove; the limit frame 9. A threaded hole is arranged in the middle; a fastening bolt 6 is arranged on the sleeve 5, and a through hole for the fastening bolt 6 to pass through is arranged on the sleeve 5; Thread groove, the fastening bolt 6 is threadedly connected with the through hole; the bottom of the fastening bolt 6 is provided with a limit ring 8, and the limit ring 8 is fixedly arranged on the bottom of the fastening bolt 6; the limit The ring 8 is located between the limit frame 9 and the sleeve 5 and is located in the limit groove.

In the utility model, the discarded round pipe 1, the casing 5 and the chain 2 are used for production; the difficulty of manual production is small, and the use is convenient; in the process of actual use, the fastening bolt 6 is first loosened, and the bottom of the fastening bolt 6 is The round tube 1 is not in contact; at this time, the sleeve 5 can slide back and forth along the round tube 1, and the chain 2 remains in a loose state; put the chain 2 on the bolt that needs to be tightened or loosened, and the sleeve 5 is facing the sheath 7. Sliding in the direction, so that the chain 2 is kept fixed around the outer circumference of the bolt, and at the same time the end of the round tube 1 away from the sheath 7 is in contact with the bolt to maintain the clamping state; tighten the fastening bolt 6 on the sleeve 5, and the bolt The bottom of 6 passes through the limit frame 9 and is engaged with the groove 11 on the round tube 1 to realize the fixation of the chain 2 and the bolt; Then the bolts can be loosened or tightened; in this utility model, a limit frame 9 is arranged inside the sleeve 5, and the limit frame 9 is set in a "Hang" shape, and the limit frame 9 and the sleeve The inner wall of 5 forms a limit groove, the bottom of the fastening bolt 6 is provided with a limit ring 8, and the limit ring 8 is fixed on the bottom of the fastening bolt 6; the limit ring 8 is located between the limit frame 9 and the limit frame 9. between the sleeves 5 and located in the limit groove; during the process of loosening or tightening the fastening bolts 6, the limit ring 8 is always located in the limit groove, and the fastening bolts 6 will not fall off the sleeve 5. The utility model is more convenient; the utility model can adjust the chain to an appropriate length according to the diameter of the bolt, and is applicable to bolts of different sizes; the carrying amount of the required wrench is reduced, and the carrying is convenient.

In an optional embodiment, a sheath 7 is provided at one end of the round tube 1 away from the first connecting piece 3 , and the sheath 7 is connected to the round tube 1 by adhesive bonding. The sheath 7 is provided with a plurality of anti-skid protrusions.

It should be noted that the sheath 7 can play a role of increasing friction, preventing the user from sweating a lot, and making it more convenient to use.

In an optional embodiment, the round tube 1 is provided with a plurality of grooves 11 which are matched with the fastening bolts 6 .

It should be noted that, after the bottom of the fastening bolt 6 is inserted into the groove 11, a locking structure can be formed, which is more firm.

In an optional embodiment, a buffer pad 10 is provided at the bottom of the fastening bolt 6 , and the buffer pad 10 is an elastic pad.

It should be noted that the buffer pad 10 provided at the bottom of the fastening bolt 6 will deform after being stressed, and the buffer pad 10 is embedded in the groove 11 to ensure the purpose of firm locking; wear.

In an optional embodiment, both the round tube 1 and the sleeve 5 are thick-walled tubes.

It should be noted that thick-walled pipes can withstand large forces and have a longer service life.

In an optional embodiment, the chain 2 is connected to the first connecting member 3 and the second connecting member 4 by welding.

It should be noted that the welding connection is relatively firm, and at the same time, the processing difficulty is low, and it is easy to make manually on the construction site.

It should be understood that, the above-mentioned specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, but not to limit the present invention. Therefore, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included within the protection scope of the present invention. Furthermore, the appended claims of this invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalents of such scope and boundaries.

Claims (7)

1. A novel chain wrench is characterized by comprising a round tube (1), a sleeve (5) and a chain (2);

the round pipe (1) is a hollow round pipe (1) with a hollow interior; one end of the circular tube (1) is provided with a first connecting piece (3); the sleeve (5) is sleeved on the circular tube (1), and the sleeve (5) is connected with the circular tube (1) in a sliding manner; the bottom of the sleeve (5) is provided with a second connecting piece (4); two ends of the chain (2) are respectively fixedly connected with the first connecting piece (3) and the second connecting piece (4);

a limiting frame (9) is arranged inside the sleeve (5), the limiting frame (9) is arranged in a shape of a Chinese character 'ji', and a limiting groove is formed between the limiting frame (9) and the inner wall of the sleeve (5); the middle part of the limiting frame (9) is provided with a threaded hole; a fastening bolt (6) is arranged on the sleeve (5), and a through hole for the fastening bolt (6) to pass through is formed in the sleeve (5); the inner wall of the through hole is provided with a thread groove, and the fastening bolt (6) is in matched threaded connection with the through hole; the bottom of the fastening bolt (6) is provided with a limiting ring (8), and the limiting ring (8) is fixedly arranged at the bottom of the fastening bolt (6); the limiting ring (8) is positioned between the limiting frame (9) and the sleeve (5) and is positioned in the limiting groove.

2. The novel chain wrench as claimed in claim 1, wherein a protective sleeve (7) is arranged at the end of the round tube (1) remote from the first connecting member (3), and the protective sleeve (7) is adhesively connected to the round tube (1).

3. A new chain wrench as claimed in claim 2, characterised in that the sheath (7) is provided with a plurality of anti-slip protrusions.

4. A new chain wrench as claimed in claim 1, characterised in that the round tube (1) is provided with a plurality of recesses (11) for cooperation with the fastening bolts (6).

5. A new chain wrench as claimed in claim 1, characterised in that the fastening bolt (6) is provided at its bottom with a cushion pad (10), said cushion pad (10) being an elastic pad.

6. A new chain wrench as claimed in claim 1, characterised in that the round tube (1) and the sleeve (5) are both thick-walled tubes.

7. A new chain wrench as claimed in claim 1, characterised in that the chain (2) and the first (3) and second (4) connecting pieces are both welded connections.

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