CN115042133A - Easy-to-loosen solid wrench and using method thereof - Google Patents

Abstract

The invention belongs to the technical field of processing jigs, and particularly relates to an easy-to-loosen solid wrench which comprises a wrench main body and a loosening device rotationally connected to the wrench main body, wherein the wrench main body comprises a wrench body and a handle fixedly connected with the wrench body; the releasing device comprises a cam which is rotationally connected to the handle and a rocker which is fixed with the cam. The solid wrench is suitable for fastening and dismantling the connection of bolts with medium and small specifications and large torque; after fastening or dismantling is completed, the solid wrench can be simply and efficiently loosened from the bolt; the solid wrench and the use method of the solid wrench can not damage the solid wrench, the bolt or the nut in the loosening process. The invention also provides a using method of the easy-to-loosen solid wrench.

Description

Easy-to-loosen solid wrench and using method thereof

Technical Field

The invention belongs to the technical field of processing jigs, and particularly relates to an easy-to-loosen solid wrench and a using method thereof.

Background

The bolt and the nut are matched to form a detachable connection mode, namely bolt connection, and the bolt and the nut are widely applied to fastening connection of two parts with through holes in daily life and industrial production processes. In order to be better suitable for the disassembly of bolt connections of different specifications and models, solid wrenches, box wrenches, adjustable wrenches, electric wrenches, pneumatic wrenches, hydraulic wrenches and other special tools are also widely applied to different use environments.

For the connection of bolts with large and medium sizes and large torque, a pneumatic wrench, a hydraulic wrench or other special tools are mainly selected for fastening, and the operation is carried out according to the use instruction of the selected tools, so that the requirement of bolt connection fastening can be met; for the connection of small-specification and small-torque bolts, tools such as a solid wrench, a ring spanner, an adjustable spanner, an electric spanner and the like are usually used for fastening, and the fastening is independently performed by one person (the left hand and the right hand of an operator respectively fasten the bolt side and the nut side) or completed by the cooperation of two persons (the operator fastens the bolt side by one person and fastens the nut side by one person); for the connection of small-size and large-torque bolts, a method that a wrench with one side matched with a hexagonal head of a fastened bolt or nut is clamped on the adjacent bolt or nut and the other side is fastened by a corresponding tool is often adopted, the fastening operation of the bolt connection is completed under the condition of saving manpower and labor, but the wrench is basically clamped on the bolt or nut after the operation is completed due to large fastening torque and is difficult to take down.

After the bolt is connected and fastened, if the phenomenon that the wrench is locked occurs, the wrench is forcibly loosened basically by adopting modes of prying and hammering the wrench by an iron hammer and the like, and the wrench is forcibly loosened by adopting modes of prying and hammering the wrench by the iron hammer and the like, so that the wrench is easily deformed or damaged by impact load, and if the wrench opening is deformed greatly, the wrench is easy to slip and hurt people in use; and the wrench is forcibly loosened by prying with a crow bar, knocking with an iron hammer and the like, so that the clamped bolt or nut hexagon is easily damaged, and if the bolt or nut hexagon is seriously damaged, the disassembly and reuse of bolt connection are seriously influenced.

Disclosure of Invention

The invention aims to provide an easy-to-loosen solid wrench, which is used for fastening a bolt connection with a medium-small specification and a large torque, and can effectively solve the problems that the wrench is not easy to loosen after the bolt connection is fastened, or the wrench and a bolt or a nut are damaged by forcibly loosening the wrench in modes of crowbar prying, hammer knocking and the like.

In order to achieve the above purpose, the invention provides the following technical scheme: an easy-to-loosen solid wrench comprises a wrench main body and a loosening device which is rotatably connected to the wrench main body, wherein the wrench main body is provided with a handle;

the wrench body comprises a wrench body and a handle fixedly connected with the wrench body;

the releasing device comprises a cam which is rotationally connected to the handle and a rocker which is fixed with the cam.

Preferably, the center of the cam is fixedly connected with a bolt, the handle is provided with a jack into which the bolt extends, and when the bolt rotates in the jack, a rocker fixedly connected to the outer edge of the cam swings around the bolt. .

Preferably, the handle is provided with a step for limiting the limit swing position of the rocker.

Preferably, the rocker has a 90 ° swing range relative to the handle under the limit of the step.

Preferably, the step is formed by a recess formation located on the interior of the handle.

Preferably, the step is formed by a raised boss formation projecting from the surface of the handle.

Preferably, the clamp body is a fixed clamp body or a movable clamp body.

Preferably, an included angle of 0-30 degrees is formed between the forceps body and the handle.

The invention also provides a use method of the easy-to-loosen solid wrench, which comprises the following steps:

s1, clamping the wrench body of the solid wrench with the bolt head to fix the bolt head with the solid wrench;

s2 rotating the rocker to make the rocker far away from the handle of the solid wrench;

s3, using another matched wrench to tighten the nut of the bolt until the nut is fastened with the bolt;

s4, the rocker is pushed to rotate towards the handle until the solid wrench is loosened from the bolt head of the bolt, and the solid wrench is taken down.

The invention has the following beneficial effects:

1. the solid wrench is suitable for fastening and dismantling the connection of bolts with medium and small specifications and large torque; after the fastening is finished, the solid wrench can be simply and efficiently loosened from the bolt.

2. The solid wrench and the use method of the solid wrench can not damage the solid wrench, the bolt or the nut in the loosening process.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

Fig. 2 is a schematic structural view of a handle and a rocker according to an embodiment of the present invention.

FIG. 3 is a schematic structural view of a handle and a rocker according to another embodiment of the present invention.

In the figure: 10. a wrench body; 11. a clamp body; 12. a handle; 13. a jack; 14. a step; 20. a loosening device; 21. a cam; 22. a rocker; 23. a bolt; A. a flange; B. the bolt is to be tightened.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, an easy-to-release solid wrench according to an embodiment of the present invention is provided, and as shown in fig. 1, the easy-to-release solid wrench is composed of a wrench body 10 and a release device 20, the material of the easy-to-release solid wrench is low carbon alloy steel, and the strength of the easy-to-release solid wrench is improved by heat treatment, the wrench body includes a wrench body 11 and a handle 12 fixedly connected to the wrench body 11, in this embodiment, the wrench body 11 is a fixed wrench body, the release device 20 includes a cam 21 rotatably connected to the handle 12 and a rocker 22 fixed to the cam 21, a plug 23 is fixedly connected to the center of the cam 21, a socket 13 into which the plug 23 extends is disposed on the handle 12, and when the plug 23 rotates in the socket 13, the rocker 22 fixedly connected to the outer edge of the cam 21 swings around the plug 23. The wrench body 10 is shown for holding a bolt or nut hex head and mounting and carrying a bolt 23, a cam 21 and a rocker 22; the bolt 23 is used for connecting the wrench body 10 and the releasing device 20 into a whole, and the rocker 22 and the wrench body 10 can rotate 90 degrees; the loosening device 20 is shown for supporting the easy-to-loosen solid wrench during the bolt tightening process and for loosening the easy-to-loosen solid wrench after the tightening process.

On the basis of the above embodiment, the wrench body 11 can be replaced by a movable wrench body to achieve the purpose of using the adjustable wrench, and is suitable for more use environments.

In a preferred embodiment, with reference to fig. 2, the handle 12 is provided with a step 14 for limiting the extreme swinging position of the rocker 22, the step 14 being formed by a projection configuration protruding from the surface of the handle 12.

In another preferred embodiment, with reference to fig. 3, the handle 12 is provided with a step 14 for limiting the extreme oscillation position of the rocker 22, the step 14 being formed by a groove configuration located inside the handle 12.

In another preferred embodiment, an included angle between the forceps body 11 and the handle 12 is configured to be 0 ° to 30 °, and the included angle is designed according to the installation distribution of the bolts, for example, 0 °, that is, the forceps body 11 and the handle 12 are arranged in a straight line, and the included angle may also be a plurality of angles such as 3 °, 5 °, 8 °, 12 °, 15 °, 17 °, 20 °, 24 °, 28 °, 30 °, and the like, so as to meet the installation and removal requirements of bolt groups in different arrangements.

The invention relates to a design method of an easy-to-loosen solid wrench, which comprises the following steps:

1. designing a clamp body 11 according to the size of a bolt head of a fastened flange connecting bolt, such as an inner hexagon clamp body, an inner octagon clamp body and the like;

2. determining a rotation included angle between the handle 12 and the clamp body according to the size of a distribution circle of the fastened flange connecting bolt, and after the easy-release solid wrench and the bolt head of the bolt are fixed, enabling two surfaces of the bolt head of the fastened bolt to be parallel to a tangent line of the bolt distribution circle;

3. the mounting position of the plug pins 23 on the wrench body 10 is determined according to the size and the number of the distribution circles of the fastened flange connecting bolts, and after the easy-release solid wrench is fixed, the circle center of the distribution circle of the fastened flange connecting bolts, the axis of the supporting bolt and the axis of the plug pins 23 are on the same straight line;

4. the other sizes are designed according to the fastening torque of the fastened flange connecting bolt, so that the easy-to-loosen solid wrench cannot deform in the whole operation process.

The invention is suitable for fastening the bolt connection with medium and small specifications and large torque; the bolt connecting and fastening device is simple in design and convenient to operate, and can effectively solve the problems that after bolt connection and fastening are completed, a wrench is not easy to loosen, or the wrench is forcibly loosened by adopting modes of crowbar prying, hammer knocking and the like to damage the wrench and a bolt or a nut hexagon head and the like.

In specific use, referring to the attached figure 1, the use method of the easy-to-loosen solid wrench comprises the following steps:

s1, clamping the clamp body of the solid wrench with the bolt head of the bolt B on the flange A, and fixing the bolt head by the solid wrench;

s2 rotating rocker 22 to make rocker 22 far from handle 12 of solid wrench;

s3, using another matched wrench to tighten the nut of the bolt until the nut is fastened with the bolt;

s4, the rocker 22 is pushed to enable the rocker 22 to rotate towards the handle 12, in the pushing process, the cam 21 is extruded with another bolt playing a supporting role, the cam 21 is jacked up under the extrusion effect of the bolt, at the moment, the wrench body 10 is loosened with the bolt head of the fastened bolt under the effect of the cam, and then the solid wrench is taken down.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.

Claims (9)

1. An easy-to-loosen solid wrench is characterized in that: comprises a wrench main body and a loosening device which is rotationally connected to the wrench main body, wherein;

the wrench body comprises a wrench body and a handle fixedly connected with the wrench body;

the releasing device comprises a cam which is rotationally connected to the handle and a rocker which is fixed with the cam.

2. The easy-to-release solid wrench as claimed in claim 1, wherein: the handle is provided with a jack for the bolt to extend into, and when the bolt rotates in the jack, a rocker fixedly connected to the outer edge of the cam swings around the bolt.

3. The easy-to-release solid wrench as claimed in claim 1, wherein: the handle is provided with a step for limiting the limit swing position of the rocker.

4. The easy-to-release solid wrench as claimed in claim 3, wherein: the rocker has a 90 DEG swing range relative to the handle under the limit of the step.

5. The easy-to-release solid wrench as claimed in claim 3, wherein: the step is formed by a recess formation located on the interior of the handle.

6. The easy-to-release solid wrench as claimed in claim 3, wherein: the step is formed by a boss structure protruding from the surface of the handle.

7. An easy-to-release solid wrench as claimed in any one of claims 1-6, wherein: the clamp body is a fixed clamp body or a movable clamp body.

8. An easy-to-release solid wrench as claimed in any one of claims 1-6, wherein: an included angle of 0-30 degrees is formed between the forceps body and the handle.

9. A use method of an easy-to-loosen solid wrench is characterized by comprising the following steps:

s1, clamping the wrench body of the solid wrench with the bolt head to fix the bolt head with the solid wrench;

s2 rotating the rocker to make the rocker far away from the handle of the solid wrench;

s3, using another matched wrench to tighten the nut of the bolt until the nut is fastened with the bolt;

s4, the rocker is pushed to rotate towards the handle until the solid wrench is loosened from the bolt head of the bolt, and the solid wrench is taken down.

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