Unlock instant, AI-driven research and patent intelligence for your innovation.

Wear resistant pick

A technology of picks and pick heads, which is applied in the field of wear-resistant picks, can solve the problems of reduced brazing height, easy to fall off, short pick life, etc., to achieve improved wear resistance, long-term effective and reliable cutting, wear uniform effect

Inactive Publication Date: 2012-05-16
吕增和
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a wear-resistant pick, which mainly solves the problem that in the work of roadheaders and coal shearers, the steel matrix around the hard alloy of the pick is exposed to the alloy cylinder part after being worn, and the brazing height is reduced. The teeth are prone to fall off after being impacted, and the life of the pick is short, etc.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Wear resistant pick
  • Wear resistant pick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] See attached figure 1 As shown, a wear-resistant pick comprises a pick body and a hard alloy cutter head 2. The pick body is composed of a pick head 1 and a pick shank 3. The front end of the pick head 1 is provided with Columnar convex part 4, the hard alloy cutter head 2 is provided with an inner cavity 5 that matches the cylindrical convex part 4 of the pick head 1, and the inner wall of the inner cavity 5 of the hard alloy cutter head 2 is threaded Shape, the columnar convex part 4 of the pick head 1 is a cylindrical surface, and there are threads on the surface that match the inner thread of the inner cavity 5, and the hard alloy cutter head 2 is screwed on the cylindrical convex part of the pick head 1. 4 On the cylindrical surface, the inner cavity and the thread gap are filled with molten solder to make it solidify as a whole.

[0014] With the gradual expansion of the working range of roadheaders, especially when cutting hard semi-coal rocks, in order to ensur...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a wear resistant pick. The pick which comprises a pick body and a hard alloy cutter head is characterized in that: the pick body comprises a pick head and a pick handle; the hard alloy cutter head is inlayed on the front end of the pick head; the front end of the pick head is provided with a cylindrical bulge; the hard alloy cutter head is provided with an internal cavity coupling with the cylindrical bulge of the pick head; and the cylindrical bulge of the pick head, which is arranged in the internal cavity of the hard alloy cutter head, is welded together with the hard alloy cutter head. The wear resistant pick avoids the hard alloy cutter head shedding caused by the wearing desynchrony of the hard alloy cutter head and the pick body, so the pick wearing is uniform, and the wearing life of the pick is prolonged.

Description

technical field [0001] The invention relates to the field of coal mining machinery, in particular to a wear-resistant pick installed on a cutting mechanism of the coal mining machinery during the working process of the coal mining machinery for cutting coal and rock. Background technique [0002] The pick-shaped pick in the prior art is made by brazing the pick body and the hard alloy cutter head, and the hard alloy cutter head is embedded in the concave hole at the front end of the pick head. The pick body is generally made of medium-carbon high-strength alloy steel through quenching and tempering treatment. The matrix structure is mostly tempered martensite or tempered troostite. The hardness is about 40HRC, and the impact toughness is above 50J / cm2. Made of 42CrMo, 35CrMo and other materials. The cemented carbide cutter head is made of high-temperature-resistant tungsten carbide with high hardness and iron-group metal cobalt with high strength and toughness. The ratio is...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21C35/183
Inventor 吕增和
Owner 吕增和