CN201730621U

CN201730621U - High-wear-resistant coal cutter pick

Info

Publication number: CN201730621U
Application number: CN2010202744390U
Authority: CN
Inventors: 刘元国
Original assignee: Individual
Current assignee: Individual
Priority date: 2010-07-29
Filing date: 2010-07-29
Publication date: 2011-02-02
Anticipated expiration: 2020-07-29

Abstract

The utility model discloses a high-wear-resistant coal cutter pick consisting of a cutter pick handle (1), a cutter pick head (2) and gauge teeth (3). The handle part of the cutter pick head (2) is fixedly connected into a central hole of the end wall of a conical end of the cutter pick handle (1); the gauge teeth (3) are arranged in equal distance into two rings, and are embedded into a cylindrical hole on the side wall of the conical end of the cutter pick handle (1); the convex height of the gauge teeth (3) is 0.3 to 0.8 mm; and an annular groove (4) is arranged at the end of the cylindrical end of the cutter pick handle (1). The coal cutter pick is characterized in that a wear-resistant ring (6) is arranged on an annular plane (5) of the conical end of the cutter pick handle (1). The high-wear-resistant coal cutter pick has the advantages that the wear-resistant performance of the coal cutter pick is further increased, the shock-resistant performance of the coal cutter pick is also increased, and the service life of the coal cutter pick can be greatly prolonged. In addition, as the wear-resistant ring is vertical to digging force, the wear-resistant ring does not easily fall off, and the gauge teeth are also prevented from falling off.

Description

The high abrasion coal cutting pick

Technical field

The utility model relates to a kind of improvement of high-performance coal cutting pick, belongs to the mining apparatus field, specifically a kind of high abrasion coal cutting pick.

Background technology

The high-performance coal cutting pick is the critical component on the large-scale digger; the cutting pick head composition that this high-performance coal cutting pick comprises the pick handle and is connected in pick pommel portion; cutting pick head and pick handle are pressed into silver brazing or copper brazing or interference and are connected; at the cone segments external surface of the pick handle two ring gauge teeths that have been equally spaced; in use, gauge teeth directly contacts with work plane, and gauge teeth is wearing and tearing in advance; can effectively protect pick handle and cutting pick head like this, improve anti-wear performance.But this high-performance coal cutting pick still has the following disadvantages: the one, because the cone segments end wall of the pick handle around the cutting pick head is a planar annular, the planar annular of this cone segments end wall, in impacting pick, it also is the position of stressed maximum, so, be easy to be worn and damage, although be the also not heavy wear of cutting pick head and gauge teeth, but the cone segments end wall planar annular of pick handle is in case after the wearing and tearing, also cause the high-performance coal cutting pick not use again in the same old way, through using proof, the driving tooth is using blunt that pick just weares and teares after 20%, has so just increased the load of development machine, has also increased power consumption, the development machine speed of service slows down, and has also shortened the application life of development machine.The 2nd, be installed on the sidewall through tooth owing to protect, under the situation of serious bump, come off easily, the guarantor of front side is through tooth, very easily comes off under the situation that the planar annular of cone segments end wall damages, and causes and can not use.

Summary of the invention

It is a kind of not only at the outer surface of cone of the pick pommel gauge teeth that has been equally spaced that the purpose of this practical property is to provide, increase the rotation anti-wear performance of coal cutting pick, and on the cone segments end wall planar annular of pick handle, also embed wear ring, to increase the wear-resisting and shock resistance of cone segments end wall planar annular, prevent to protect through tooth easily come off, with the further raising coal cutting pick high abrasion coal cutting pick in application life.

For reaching above purpose, the technical scheme that the utility model adopted is: this high abrasion coal cutting pick, by the pick handle, cutting pick head and gauge teeth constitute, the shank of cutting pick head is fixedly connected in the center pocket of end wall of pick handle cone segments, last two rings of the equidistant arrangement of gauge teeth, in the cylindricality cave on the sidewall of embedding pick handle cone segments, the protrusion height of gauge teeth is 0.3-0.8mm, cutting pick head and gauge teeth can adopt silver brazing or copper brazing, or interference is pressed into ways of connecting and fixes, end at the cylinder end of pick handle is provided with annular recess, it is characterized in that being provided with wear ring on the planar annular of pick handle cone segments.The utility model is also implemented by following measure: in the cannelure on the planar annular outer of described wear ring embedding pick handle cone segments, by being cooled to one in the full cannelure of the wear-resisting scolder that melts, the height that wear ring protrudes the planar annular of pick handle cone segments is 0.3-3.0mm.

The beneficial effects of the utility model are: compare with the high-performance coal cutting pick of present use, owing on the outer of the planar annular of pick handle cone segments, be provided with wear ring, and this position is the highest position of loss percentage, so, both further increased the anti-wear performance of coal cutting pick, also increase the shock resistance of coal cutting pick, can significantly improve the application life of coal cutting pick.In addition, because wear ring is with to advance pick power vertical, so the wear ring difficult drop-off has also prevented guarantor's coming off through tooth.

Description of drawings

Fig. 1, cut open schematic diagram for the structure master office of looking of this practical sexual type.

Fig. 2, look schematic diagram for the left side of this practical sexual type.

The specific embodiment

Make the utility model with reference to Fig. 1,2.This high abrasion coal cutting pick, by pick handle 1, cutting pick head 2 and gauge teeth 3 constitute, the shank of cutting pick head 2 is fixedly connected in the center pocket of end wall of pick handle 1 cone segments, last two rings of gauge teeth 3 equidistant arrangements, in the cylindricality cave on the sidewall of embedding pick handle 1 cone segments, the protrusion height of gauge teeth 3 is 0.3-0.8mm, cutting pick head 2 and gauge teeth 3 can adopt silver brazing or copper brazing, or interference is pressed into ways of connecting and fixes, end at the cylinder end of pick handle 1 is provided with annular recess 4, during use, cylinder end by pick handle 1 is installed on the coal mining machine roller, it is characterized in that being provided with wear ring 6 on the planar annular 5 of pick handle 1 cone segments.In the cannelure on the outer of the planar annular 5 of described wear ring 6 embedding pick handles 1 cone segments, by being cooled to one in the full cannelure of the wear-resisting scolder that melts, the height that wear ring 6 protrudes the planar annular 5 of pick handle 1 cone segments is 0.3-3.0mm, on the outer of the planar annular 5 by wear ring 6 being located at pick handle 1 cone segments, not only further increased the anti-wear performance of coal cutting pick, and increased the shock resistance of coal cutting pick, prevent that the guarantor from easily coming off through tooth, can significantly improve the application life of coal cutting pick.

Claims

1. high abrasion coal cutting pick, constitute by pick handle (1), cutting pick head (2) and gauge teeth (3), the shank of cutting pick head (2) is fixedly connected in the center pocket of end wall of pick handle (1) cone segments, last two rings of the equidistant arrangement of gauge teeth (3), in the cylindricality cave on the sidewall of embedding pick handle (1) cone segments, the protrusion height of gauge teeth (3) is 0.3-0.8mm, end at the cylinder end of pick handle (1) is provided with annular recess (4), it is characterized in that being provided with wear ring (6) on the planar annular (5) of pick handle (1) cone segments.

2. high abrasion coal cutting pick according to claim 1, it is characterized in that described wear ring (6) embeds in the cannelure on planar annular (5) outer of pick handle (1) cone segments, the height that wear ring (6) protrudes the planar annular (5) of pick handle (1) cone segments is 0.3-3.0mm.