CN211332959U

CN211332959U - Novel chain wrench

Info

Publication number: CN211332959U
Application number: CN201922324634.3U
Authority: CN
Inventors: 郭桂雪; 杨振; 祝园田; 王�义
Original assignee: Shandong Industrial Equipment Installation Group Co ltd
Current assignee: Shandong Industrial Equipment Installation Group Co ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-08-25
Anticipated expiration: 2029-12-19

Abstract

A novel chain wrench comprises a round pipe, a sleeve and a chain; the round pipe is a hollow round pipe with a hollow inner part; one end of the round pipe is provided with a first connecting piece; the sleeve is sleeved on the circular tube and is connected with the circular tube in a sliding manner; the bottom of the sleeve is provided with a second connecting piece; two ends of the chain are respectively and fixedly connected with the first connecting piece and the second connecting piece; a limiting frame is arranged in the sleeve, and a limiting groove is formed between the limiting frame and the inner wall of the sleeve; the middle part of the limiting 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 bottom of the fastening bolt is provided with a limiting ring which is fixedly arranged at the bottom of the fastening bolt; the limiting ring is positioned between the limiting frame and the sleeve and is positioned in the limiting groove; the chain can be adjusted to a proper length according to the diameter of the bolt, and the chain is suitable for bolts with different sizes; the carrying amount of the needed wrench is reduced, and the carrying is convenient.

Description

Novel chain wrench

Technical Field

The utility model relates to a hardware and tools technical field especially relates to a novel chain spanner.

Background

The wrench is a common mounting and dismounting tool, and is a manual tool for screwing bolts, screws, nuts and other screw threads to tightly hold open or trepanning fasteners of the bolts or nuts by utilizing the lever principle. The wrench is typically made of structural steel of carbon or alloy material. The wrench is usually provided with an opening or a trepanning for clamping the bolt or the nut at one end or two ends of the handle part, and when the wrench is used, external force is applied to the handle part along the rotation direction of the thread, so that the bolt or the nut can be screwed; in the engineering construction process, the fastening and the dismounting of the bolt are frequently encountered works, and because the specification of the bolt is more, the existing finished product wrench in the market is basically fixed except for the shifting wrench, so that a large and small wrench with a tool kit is often needed in the actual working process; large occupied area and heavy weight and inconvenient carrying.

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

SUMMERY OF THE UTILITY MODEL

Objects of the invention

In order to solve the problems in the prior art that due to the fact that the specifications of bolts are more, the existing finished product wrenches on the market are basically fixed in size except for shifting wrenches, and therefore wrenches with large and small tool bags are often needed in the actual working process; the utility model provides a novel chain wrench, which can adjust the chain to a proper length according to the diameter of the bolt and is applicable to bolts with different sizes; the carrying amount of the needed wrench is reduced, and the carrying is convenient.

(II) technical scheme

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

the round pipe is a hollow round pipe with a hollow inner part; one end of the circular tube is provided with a first connecting piece; the sleeve is sleeved on the round pipe and is connected with the round pipe in a sliding mode; the bottom of the sleeve is provided with a second connecting piece; two ends of the chain are respectively and fixedly connected with the first connecting piece and the second connecting piece;

a limiting frame is arranged in the sleeve and is in a shape of a Chinese character 'ji', and a limiting groove is formed between the limiting frame and the inner wall of the sleeve; the middle part of the limiting 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 thread groove, and the fastening bolt is in threaded connection with the through hole in a matching manner; the bottom of the fastening bolt is provided with a limiting ring which is fixedly arranged at the bottom of the fastening bolt; the limiting ring is positioned between the limiting frame and the sleeve and positioned in the limiting groove.

Preferably, a protective sleeve is arranged at one end, far away from the first connecting piece, of the circular tube, and the protective sleeve is connected with the circular tube in a sticking mode.

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

Preferably, the round pipe is provided with a plurality of grooves 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, the circular tube and the sleeve are both thick-walled tubes.

Preferably, the chain is connected with the first connecting piece and the second connecting piece in a welding manner.

The above technical scheme of the utility model has following profitable technological effect: in the utility model, the waste round pipe, the sleeve and the chain are used for manufacturing; the manual manufacturing difficulty is small, and the use is convenient; in the actual use process, the fastening bolt is unscrewed firstly, and the bottom of the fastening bolt is not contacted with the circular pipe; at the moment, the sleeve can slide back and forth along the circular tube, and the chain keeps a loose state; sleeving the chain on a bolt needing to be screwed or unscrewed, and sliding the sleeve towards the direction of the sheath, so that the chain is wound on the periphery of the bolt and is kept fixed, and meanwhile, one end of the circular tube, which is far away from the sheath, is in contact with the bolt, so that the clamping state is kept; the fastening bolt on the sleeve is screwed, and the bottom of the fastening bolt penetrates through the limiting frame to be matched and clamped with the groove on the circular tube, so that the chain and the bolt are fixed; at the moment, the sheath on the circular tube is held to rotate clockwise or anticlockwise, so that the bolt can be loosened or screwed; in the utility model, the inside of the sleeve is provided with a limiting frame, the limiting frame is arranged in a shape of 'T', the limiting frame and the inner wall of the sleeve form a limiting groove, the bottom of the fastening bolt is provided with a limiting ring, and the limiting ring is fixedly arranged at the bottom of the fastening bolt; the limiting ring is positioned between the limiting frame and the sleeve and in the limiting groove; in the process of loosening or screwing the fastening bolt, the limiting ring is always positioned in the limiting groove, so that the fastening bolt cannot fall off from the sleeve, and the use is more convenient; the chain can be adjusted to a proper length according to the diameter of the bolt, and the chain is suitable for bolts with different sizes; the carrying amount of the needed wrench is reduced, and the carrying is convenient.

Drawings

Fig. 1 is a schematic structural view of the novel chain wrench provided by the present invention.

Fig. 2 is the mounting structure schematic diagram of the novel chain wrench in the fastening bolt loosening state.

Fig. 3 is the mounting structure diagram of the novel chain wrench under the locking state of the fastening bolt.

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

Reference numerals: 1. a circular tube; 2. a chain; 3. a first connecting member; 4. a second connecting member; 5. a sleeve; 6. fastening a bolt; 7. a sheath; 8. a limiting ring; 9. a limiting frame; 10. a cushion pad; 11. and (4) a groove.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

As shown in fig. 1-4, the novel chain wrench provided by the present invention comprises a circular tube 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 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 and 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 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 arranged on the sleeve 5; a thread groove is formed in the inner wall of the through hole, 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.

In the utility model, the waste round tube 1, the sleeve 5 and the chain 2 are used for manufacturing; the manual manufacturing difficulty is small, and the use is convenient; in the actual use process, the fastening bolt 6 is firstly unscrewed, and the bottom of the fastening bolt 6 is not contacted with the circular tube 1; at the moment, the sleeve 5 can slide back and forth along the circular tube 1, and the chain 2 keeps a loose state; sleeving the chain 2 on a bolt needing to be screwed or unscrewed, and sliding the sleeve 5 towards the sheath 7, so that the chain 2 is wound on the periphery of the bolt and is kept fixed, and meanwhile, one end of the circular tube 1, which is far away from the sheath 7, is in contact with the bolt, so that the clamping state is kept; the fastening bolt 6 on the sleeve 5 is screwed, and the bottom of the fastening bolt 6 penetrates through the limiting frame 9 to be matched and clamped with the groove 11 on the circular tube 1, so that the chain 2 and the bolt are fixed; at the moment, the sheath 7 on the circular tube 1 is held to rotate clockwise or anticlockwise, so that the bolt can be loosened or screwed; in the utility model, a limiting frame 9 is arranged inside the sleeve 5, the limiting frame 9 is arranged in a shape of "" T "", the limiting frame 9 and the inner wall of the sleeve 5 form a limiting groove, a limiting ring 8 is arranged at the bottom of the fastening bolt 6, 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; in the process of loosening or screwing the fastening bolt 6, the limiting ring 8 is always positioned in the limiting groove, so that the fastening bolt 6 cannot fall off from the sleeve 5, and the use is more convenient; the chain can be adjusted to a proper length according to the diameter of the bolt, and the chain is suitable for bolts with different sizes; the carrying amount of the needed wrench is reduced, and the carrying is convenient.

In an alternative embodiment, a protective sleeve 7 is arranged at one end of the circular tube 1 away from the first connector 3, and the protective sleeve 7 is adhesively connected with the circular tube 1. The sheath 7 is provided with a plurality of anti-skid protrusions.

It should be noted that the sheath 7 can play a role in increasing friction, so as to prevent the user from sweating more, and the use is more convenient.

In an alternative embodiment, the circular 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, and the fastening bolt is firmer.

In an alternative embodiment, the bottom of the fastening bolt 6 is provided with a cushion pad 10, and the cushion pad 10 is an elastic pad.

It should be noted that the cushion pad 10 arranged at the bottom of the fastening bolt 6 deforms after being stressed, and the cushion pad 10 is embedded into the groove 11, so that the purpose of firm locking is ensured; while at the same time reducing wear on the bottom of the fastening bolt 6.

In an alternative embodiment, the tubular 1 and the sleeve 5 are both thick-walled tubes.

It should be noted that the thick-walled pipe has a large bearing force and a long service life.

In an alternative embodiment, the chain 2 is connected to both the first connecting element 3 and the second connecting element 4 by welding.

It should be noted that the welding connection is firm, and the processing degree of difficulty is low simultaneously, very easy manual preparation on the factory.

It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

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.