CN211174103U

CN211174103U - Mining cutting pick

Info

Publication number: CN211174103U
Application number: CN201920557944.7U
Authority: CN
Inventors: 周志建
Original assignee: Deqing Aide Machinery Co ltd
Current assignee: Deqing Aide Machinery Co ltd
Priority date: 2019-04-23
Filing date: 2019-04-23
Publication date: 2020-08-04
Anticipated expiration: 2029-04-23

Abstract

The utility model provides a mining pick, it mainly comprises cylindrical handle of a knife and cone tool bit body, the tool bit body inlay the hammer-shaped body tool bit seat of seting up the tool bit groove in the top, be equipped with a transition between the circular tool bit seat in top of tool bit seat and the circular tool bit seat in bottom and use curved slope to be equipped with a circular go-between that is used for connecting the handle of a knife usefulness in the bottom of tool bit seat, tool bit body front end cone angle head comprises the carbide block, is equipped with evenly distributed's carbide sand grip on its carbide layer, and it has simple structure, reasonable, and convenient to use can increase the wearability on product surface, and intensity is big, the fastness is high, can improve characteristics such as product life and availability factor.

Description

Mining cutting pick

Technical Field

The invention relates to a mining cutting tooth, in particular to a mining cutting tooth which is arranged on a coal mining machine and used for cutting coal rocks, and belongs to the technical field of coal mining machine engineering.

Background

The mining cutting tooth is one of the vulnerable parts in coal mining and roadway tunneling machinery, is a main tool for coal falling and breaking, and has the performance that the performance of the cutting tooth directly influences the exertion of the production capacity of the coal mining machinery, the power consumption, the working stability and the service life of other related parts. The existing mining cutting pick mainly comprises a cutting pick body and a hard alloy tool bit, wherein the hard alloy tool bit is embedded in a concave hole at the end part of the cutting pick body and fixedly connected through brazing. The hard alloy tool bit at the head part of the mining cutting pick has a coal mining effect and good wear resistance, so that a certain wear-resistant mining effect can be achieved, and the service life of the cutting pick is prolonged; but as a cutting pick product for mining, the whole cutting pick extends into a coal mine layer in the specific excavating process, besides the function of forward rotation propelling of the head hard alloy cutter head, the whole pick body, particularly the front end part of the pick body close to and the hard alloy cutter head, is also subjected to more or less strong friction of an ore stratum, because the pick body is generally processed by quenching and tempering medium carbon high-strength alloy steel, the hardness and the strength of the cutting pick body are far lower than those of a hard alloy cutter head embedded in the head, so that the cutting pick body is worn in advance in the working process, thereby influencing the service life of the whole mining cutting pick, and because the cutting head is fixedly welded, the cutting head is very inconvenient to replace, the cutting head can be continuously used only by replacing the whole cutting head, which is very waste, taking to store after use is also a great problem because of the cylindrical body, which is very inconvenient to install and remove.

Disclosure of Invention

The invention aims to overcome the defects in the prior art, and provides the mining cutting pick which is simple and reasonable in structure, convenient to use, large in strength, high in fastness and capable of improving the service life and the service efficiency of a product, and the wear resistance of the surface of the product can be improved. The invention aims to solve the technical scheme that the mining cutting pick mainly comprises a cylindrical cutter handle and a conical cutter head body, wherein the cutter head body is embedded in a hammer-shaped cutter head seat with a cutter head groove in the top, a curved slope for transition is arranged between a top circular cutter head seat and a bottom circular cutter head seat of the cutter head seat, a circular connecting ring for connecting the cutter handle is arranged at the bottom of the cutter head seat, the conical angle head at the front end of the cutter head body is composed of hard alloy blocks, and hard alloy convex strips which are uniformly distributed are arranged on a hard alloy layer.

Preferably, the method comprises the following steps: the tool handle is covered with a layer of snap ring with the perimeter larger than that of the tool handle, the snap ring is fastened on the tool handle through a gasket, a wavy connecting notch is formed in the connecting position of the snap ring, the length of the tool handle is longer than that of the snap ring, and at least one positioning hole is formed in the snap ring. A convex cylindrical handle body is arranged on the lower portion of a gasket of the handle, so that a narrow-section inverted trapezoidal bottom seat is formed at the bottom.

The invention belongs to an improvement of the prior art, and has the characteristics of simple and reasonable structure, convenient use, high strength, high fastness, long service life, high use efficiency and the like, and can increase the wear resistance of the surface of a product.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings: as shown in figure 1, the mining cutting pick mainly comprises a cylindrical cutter handle 1 and a conical cutter head 2 body, the main body of the tool bit 2 is embedded in a hammer-shaped tool bit seat 4 with a tool bit groove 3 at the top, a curved slope 7 for transition is arranged between a top circular tool bit seat 5 and a bottom circular tool bit seat 6 of the tool bit seat 4, a round connecting ring 8 for connecting a tool holder is arranged at the bottom of the tool bit seat 4, the taper angle head part at the front end of the tool bit 2 body consists of a hard alloy block 9, hard alloy raised strips 10 which are uniformly distributed are arranged on the hard alloy layer 9, a retaining ring 11 with the circumference larger than that of the knife handle is coated outside the knife handle 1, and is fastened on the knife handle 1 by a gasket 12, a wave-shaped connecting gap 13 is arranged at the joint of the retaining ring 12, the length of the tool shank 1 is longer than that of the retaining ring 11, and at least one positioning hole 14 is formed in the retaining ring. The lower part of the gasket 12 of the knife handle 1 is provided with a convex cylindrical handle body 15, so that the bottom of the handle body forms a narrow-section inverted trapezoidal bottom seat 16.

According to the invention, the hard alloy layer is arranged at the front end taper angle head part of the tool bit body 2, and the cylindrical hard alloy is deeply embedded in the tool bit seat and is firmly welded, so that the welding firmness is greatly improved, the wear resistance of a product is increased, and the service life of the product is prolonged; in addition, the wall surface of the knife handle is coated with the retaining ring, so that the knife handle is more convenient to take.

Claims

1. The utility model provides a mining pick, it mainly comprises cylindrical handle of a knife and cone tool bit body, its characterized in that tool bit body inlay in the top and set up the hammer-shaped body tool bit seat in tool bit groove, be equipped with a transition between the circular tool bit seat in top of tool bit seat and the circular tool bit seat in bottom and use curved slope to be equipped with a circular go-between that is used for connecting the handle of a knife usefulness in the bottom of tool bit seat, tool bit body front end cone angle head comprises the carbide block, is equipped with evenly distributed's carbide sand grip on its carbide layer.

2. The mining pick of claim 1, wherein the shank is coated with a retaining ring having a circumference greater than that of the shank and fastened to the shank by a washer, the retaining ring having a connection notch formed in a joint thereof in a wave shape, the shank having a length greater than that of the retaining ring and having at least one positioning hole, the shank having a cylindrical shank protruding from a lower portion of the washer to form a narrow-section inverted trapezoidal base at a bottom thereof.