Chain wrench

Abstract

The utility model relates to the technical field of tool equipment, and discloses a chain wrench which comprises a pipe body, a roller chain and a connecting piece, a protruding block is arranged on one side of the pipe body, a through groove is formed in the protruding block, one end of the roller chain is fixedly connected to the side, away from the protruding block, of the pipe body, and the other end of the roller chain penetrates through the through groove and is a movable end. One side of each protruding block is further provided with an adjusting hole, each connecting piece penetrates through the corresponding adjusting hole to fix the corresponding roller chain, the structure is simple, all parts can be conveniently maintained or repaired or replaced, operation is easy, and workers can conveniently use the roller chain.

Description

Technical Field

[0001] The utility model relates to the technical field of tool equipment, in particular to a chain wrench. Background Art

[0002] In daily life and mechanical-related work, it is usually necessary to use simple auxiliary tools to check the internal structure or repair household appliances or equipment. In particular, in the process of mold maintenance, it is often necessary to use pipe clamps to remove guide pillars, water nozzles, etc. When disassembling and installing cylindrical objects such as guide pillars and water nozzles, the clamping effect of the pipe clamp is not good. When the size of the required removed accessories is too large, a large pipe clamp is required, which is difficult to operate, increasing the difficulty of mold removal and mold installation, and it is inconvenient when the tool needs maintenance or even repair.

[0003] In the prior art, the utility model patent (CN207465085U) discloses a single chain anti-slip wrench, which belongs to the technical field of manual tool equipment. The technical solution is: it includes a steel pipe, a car chain, a full-buckle screw rod and a fixing nut, one end of the full-buckle screw rod is screwed into the steel pipe from one end of the steel pipe, and the other end of the full-buckle screw rod is provided with a fixing nut, one end of the car chain is welded to the other end of the steel pipe, and the other end of the car chain is inserted into the steel pipe and welded to the full-buckle screw rod in the steel pipe. When using, the wrench is not easy to repair and maintain, or even replace.

[0004] Based on this, the technical problem solved in this case is: how to provide a chain wrench that is easy to maintain, repair and replace. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a chain wrench.

[0006] The technical solution of the utility model is:

[0007] A chain wrench comprises a tube body, a roller chain and a connecting piece. A protrusion is provided on one side of the tube body, and a through groove is provided on the protrusion. One end of the roller chain is fixedly connected to a side of the tube body away from the protrusion, and the other end passes through the through groove and is a movable end. An adjustment hole is also provided on one side of the protrusion, and the connecting piece passes through the adjustment hole to fix the roller chain.

[0008] One of the above technical solutions of the utility model has at least one of the following advantages or beneficial effects:

[0009] The utility model has a simple structure, and each component can be disassembled and installed separately, which is convenient for maintenance, repair or replacement of each component, and is easy to operate and convenient for staff to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional diagram of embodiment 1 of the utility model;

[0011] Figure 2 It is a front view of embodiment 1 of the utility model;

[0012] Figure 3 It is a side view of embodiment 1 of the utility model;

[0013] Figure 4 for Figure 3 CC cross-sectional view. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] Example 1

[0016] See also Figure 1-4 A chain wrench comprises a tube body 1, a roller chain 2 and a connector 3. A protrusion 11 is provided on one side of the tube body 1, and a through groove 111 is provided on the protrusion 11. One end of the roller chain 2 is fixedly connected to a side of the tube body 1 away from the protrusion 11, and the other end passes through the through groove 111 and is a movable end. An adjustment hole 112 is also provided on one side of the protrusion 11, and the connector 3 passes through the adjustment hole 112 to fix the roller chain 2.

[0017] In actual work, the roller chain 2 is passed through the through groove 111, and the roller chain 2 in the through groove 111 is inserted to adjust the fixation and looseness of the roller chain 2, thereby adjusting the tightening force of the chain wrench on the parts that need to be tightened or loosened (hereinafter collectively referred to as "guide posts"), and by adjusting the guide posts that can adapt to different diameters, when the guide posts need to be fixed, the movable end of the roller chain 2 is retracted toward the through groove 111 to keep the fixed diameter of the roller chain 2 at the maximum, and then the guide post is put on, and the movable end of the roller chain 2 is pulled in the opposite direction to fix the guide post until the guide post is in a state that is convenient for tightening or loosening. On the other hand, since the movable end of the roller chain 2 can pass through the through groove 111 or detach from the through groove 111, and the connector 3 can be removed from the adjustment hole 112, that is to say, the movable end of the roller chain 2, the connector 3 and the tube body 1 are all independent of each other, which is conducive to the maintenance, repair or replacement of each independent component by the staff.

[0018] Furthermore, it also includes a fixing rod 4, one end of which is provided with a first thread 41, and the end of the tube body 1 close to the protrusion 11 is provided with a threaded hole matching the first thread 41, and the fixing rod 4 is movably connected to the threaded hole. When the fixing rod 4 is rotated, one end of the fixing rod 4 protrudes from the threaded hole until it is tightly pressed against the part of the external device to be tightened or loosened.

[0019] Through the above design, when in use, in order to prevent the guide column from sliding, the fixing rod 4 is passed through the tube body 1 and extended from one end of the tube body 1 to further fix the guide column, which can effectively prevent the guide column from sliding when tightening or loosening the guide column, thereby improving work efficiency. The fixing effect of the fixing rod 4 can be strengthened through threaded fitting. In particular, since the fixing rod 4 can be installed into the tube body 1 or removed from the tube body 1, the fixing rod 4 is also convenient for maintenance, repair or replacement.

[0020] Preferably, the other end of the fixing rod 4 is further provided with an adjusting portion 42 , and the fixing rod 4 is rotated by the adjusting portion 42 so as to protrude from the threaded hole or retreat from the threaded hole to the inside of the tube body 1 .

[0021] When installing or removing the fixing rod 4, the adjusting portion 42 is used to facilitate the staff to control the fixing rod 4 to protrude from one end of the tube body 1 or to detach from one end of the tube body 1, which is conducive to the maintenance or replacement of the fixing rod 4. Specifically, the adjusting portion 42 in this embodiment is a hexagonal adjustment. The fixing rod 4 is adjusted with an adjusting portion 42 of other shapes and has the same function, which is within the protection scope of the present utility model.

[0022] More preferably, the connecting member 3 is an adjusting screw 31, the adjusting hole 112 is connected to the through slot 111, and the interior of the adjusting hole 112 is also provided with a second thread 1121 matching the adjusting screw 31, and the adjusting screw 31 fixes the roller chain 2 passing through the through slot 111 by cooperating with the second thread 1121.

[0023] In this embodiment, the roller chain 2 can be fixed by adjusting the screw 31, which is convenient for the staff to operate. Specifically, the adjusting holes 112 and the adjusting screws 31 are paired one by one into groups, generally two groups or more, but in this embodiment and the accompanying drawings, there are two groups, because the design of two groups can better distribute the force when fixing the roller chain 2, but when working conditions require, the adjusting holes 112 and the adjusting screws 31 can be adjusted to more than two.

[0024] Furthermore, a fixing column 311 for fixing the chain is provided on the top of the adjusting screw 31 , and the outer diameter of the fixing column 311 is the minimum outer diameter of the entire adjusting screw 31 , and the outer diameter of the fixing column 311 matches the chain pitch of the roller chain 2 .

[0025] In order to better fix the roller chain 2, the roller chain 2 can be better fixed by adjusting the fixing column 311 of the screw 31, so as to better tighten or loosen the guide column. In particular, the outer diameter of the fixing column 311 is generally matched with the chain pitch of the roller chain 2. Specifically, the outer diameter range of the fixing column 311 is less than or equal to the chain pitch of the roller chain 2.

[0026] More preferably, the tube body 1 and the protrusion 11 are an integrally formed structure.

[0027] The one-piece structure allows the roller chain 2 to better cooperate with the guide post, and increases the strength of the tube body 1 and the protrusion 11 .

[0028] Furthermore, the tube body 1 and the fixing rod 4 are both made of medium carbon steel.

[0029] Through the above design, the medium carbon steel has stronger strength and rigidity, which is conducive to fixing the guide column and increasing the service life.

[0030] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A chain wrench, characterized in that: It includes a tube body, a roller chain, and a connecting piece. A protrusion is provided on one side of the tube body, and a through groove is provided on the protrusion. One end of the roller chain is fixedly connected to the side of the tube body away from the protrusion, and the other end passes through the through groove and is a movable end. An adjustment hole is also provided on one side of the protrusion, and the connecting piece fixes the roller chain through the adjustment hole.

2. A chain wrench according to claim 1, characterized in that: It also includes a fixing rod, one end of which is provided with a first thread, and the tube body is provided with a threaded hole matching the first thread at one end close to the protrusion, and the fixing rod is movably connected to the threaded hole. When the fixing rod is rotated, one end of the fixing rod protrudes from the threaded hole until it is tightly pressed against a part of the external device to be tightened or loosened.

3. A chain wrench according to claim 2, characterized in that: The other end of the fixing rod is also provided with an adjusting portion, and the fixing rod is rotated by the adjusting portion so as to protrude from the threaded hole or retreat from the threaded hole to the inside of the tube body.

4. A chain wrench according to claim 1, characterized in that: The connecting piece is an adjusting screw, the adjusting hole is connected to the through slot, a second thread matching the adjusting screw is provided inside the adjusting hole, and the adjusting screw fixes the roller chain passing through the through slot by cooperating with the second threaded portion.

5. A chain wrench according to claim 4, characterized in that: A fixing column for fixing the chain is arranged on the top of the adjusting screw, the outer diameter of the fixing column is the minimum outer diameter of the entire adjusting screw, and the outer diameter of the fixing column matches the chain pitch of the roller chain.

6. A chain wrench according to claim 1, characterized in that: The tube body and the protrusion are an integrally formed structure.

7. A chain wrench according to claim 2, characterized in that: The pipe body and the fixing rod are both made of medium carbon steel.

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