Pneumatic net shearing device

Abstract

A pneumatic net shearing device comprises a reversing valve, an air cylinder and a shear unit, an air source connector is arranged on the reversing valve, the reversing valve is connected with the air cylinder through an air line, an assembling base is fixedly arranged on a cylinder sleeve of the air cylinder, two lug plates are arranged on the assembling base, and cranks are hinged to the lug plates respectively. Shear blades are respectively arranged on the two cranks; two connecting rods are hinged to the end of a piston of the air cylinder, and the two connecting rods are hinged to the upper portion of the crank. The problem that in the prior art, time and labor are consumed due to the fact that manual shearing equipment is used for reducing and removing meshes is solved, and on the basis that the underground anti-explosion requirement is met, an air source serves as power, and opposite shearing of the scissors is achieved in cooperation with the action of an air cylinder. The working efficiency can be greatly improved, and fatigue of workers is avoided. Particularly, the equipment is simple in structure and low in manufacturing cost and maintenance cost, can be flexibly assembled and reformed by detachable parts, and has market popularization value.

Description

Technical Field

[0001] The utility model relates to the field of general shearing equipment, in particular to a pneumatic net shearing device. Background Art

[0002] During the mining process of the fully-mechanized working face in the underground coal mine, the coal mining machine cuts the triangular area, and the mesh is rolled into the coal chute or wrapped around the drum, causing the machine to stop, affecting production and being unsafe. At this time, manual operation is required to cut and break the mesh in the triangular area. The ordinary mesh shears used in the prior art have the disadvantages of slow speed, low efficiency, and easy fatigue when they are manually cut, which easily causes workers to slack off. Therefore, it is necessary to improve the strength of the mesh shears, reduce labor intensity, and enhance the efficiency of mining and cutting. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a pneumatic net cutting device with simple structure, high net cutting strength, which can improve labor efficiency and is easy to use while meeting the underground explosion-proof requirements.

[0004] The equipment includes a reversing valve, a cylinder and a scissor unit;

[0005] The reversing valve is provided with an air source interface, and the reversing valve is connected to the cylinder through an air line; when in use, the air source interface is connected to the downhole compressed air, and the reversing valve opens the cylinder to operate;

[0006] An assembly base is fixedly arranged on the cylinder sleeve of the cylinder, and two ear plates are arranged on the assembly base, and cranks are respectively hingedly arranged on the ear plates;

[0007] The two cranks are respectively provided with scissor blades;

[0008] The piston end of the cylinder is hingedly provided with two connecting rods, and the two connecting rods are respectively hingedly provided on the upper part of the crank.

[0009] The effect achieved in this way is that the action of the cylinder drives the action of the connecting rod, and the connecting rod pulls the crank, causing the scissor blades on the two cranks to shear in opposite directions.

[0010] The beneficial effects of the utility model are as follows: the utility model solves the problem of time-consuming and labor-intensive use of manual shearing equipment in the prior art to reduce mesh sheets, and uses air source as power on the basis of meeting underground explosion-proof requirements, and cooperates with the cylinder action to achieve opposite shearing of scissors. It can greatly improve the work efficiency and avoid worker fatigue. In particular, the equipment has a simple structure, low cost and maintenance cost, can be flexibly assembled and remanufactured by disassembling machine parts, and has market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of a pneumatic net shearing device described in the utility model;

[0012] Figure 2 This is a schematic diagram of the assembly structure of a pneumatic mesh cutting device described in the utility model;

[0013] Figure 3 yes Figure 1 A partial enlarged view of

[0014] Reference numerals:

[0015] 1- scissor blade 2- crank 3- cylinder 4- machine body shell 5- air source interface 6- ear plate 7- connecting rod 8- reversing valve 9- restraint cover

[0016] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0017] Reference Figure 1 , Figure 2 The pneumatic mesh shearing device described in the utility model comprises a reversing valve 8, a cylinder 3 and a scissor unit;

[0018] The reversing valve 8 is provided with an air source interface 5, and the reversing valve 8 is connected to the cylinder 3 through an air line; when in use, the air source interface 5 is connected to the downhole compressed air, and the reversing valve 8 opens the cylinder to operate;

[0019] An assembly base is fixedly arranged on the cylinder sleeve of the cylinder 3, and two ear plates 6 are arranged on the assembly base, and cranks 2 are respectively hingedly arranged on the ear plates 6;

[0020] The two cranks 2 are respectively provided with scissor blades 1;

[0021] The piston end of the cylinder is hingedly provided with two connecting rods 7 , and the two connecting rods 7 are hingedly provided on the upper part of the crank 2 respectively.

[0022] The effect achieved by this is that the action of the cylinder drives the connecting rod 7 to move, and the connecting rod 7 pulls the crank 2, so that the scissor blades 1 on the two cranks 2 shear in opposite directions.

[0023] Furthermore, the scissor blade 1 is hinged at the end of the crank 2, and a restraining cover plate 9 is provided between the two scissor blades 1. The restraining cover plate 9 has two hinge holes and is hinged to the two scissor blades 1 through the two hinge holes.

[0024] The effect achieved thereby is that the two scissor blades 1 rotate around the hinge point on the constraint cover plate 9, or in other words, the two scissor blades 1 rotate in opposite directions, thereby constraining the rotational travel of the two scissor blades 1 and making the shearing efficiency higher.

[0025] Furthermore, the reversing valve 8 and the cylinder 3 are covered with a body shell 4, and the air source interface 5 is exposed from the body shell 4.

[0026] Preferably, the outer surface of the body shell 4 is also provided with a rubber sleeve with anti-slip patterns.

[0027] When the utility model is in use, the air source interface 5 is connected to the downhole compressed air pipeline, and the reversing valve 8 is opened to control the reciprocating motion of the piston part of the cylinder 3, thereby driving the scissors to shear in opposite directions to achieve the cutting of the mesh.

[0028] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims.

[0029] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pneumatic net shearing device, comprising a reversing valve, a cylinder and a scissor unit, wherein the reversing valve is provided with an air source interface, and the reversing valve is connected to the cylinder through an air line, characterized in that: An assembly base is fixedly arranged on the cylinder sleeve of the cylinder, and two ear plates are arranged on the assembly base, and cranks are respectively hingedly arranged on the ear plates; The two cranks are respectively provided with scissor blades; The piston end of the cylinder is hingedly provided with two connecting rods, and the two connecting rods are respectively hingedly provided on the upper part of the crank.

2. A pneumatic mesh cutting device according to claim 1, characterized in that: The scissor blades are hinged at the ends of the cranks, and a restraining cover plate is arranged between the two scissor blades. The restraining cover plate is provided with two hinge holes, and is respectively hinged to the two scissor blades through the two hinge holes.

3. A pneumatic mesh cutting device according to claim 1, characterized in that: The reversing valve and the cylinder are covered with a machine body shell, and the air source interface is exposed from the machine body shell.

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