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Novel cutting pick

A new type of pick technology, used in the fields of shearers, shield machines, rotary drilling rigs, and roadway boring machines, can solve the problems of reducing the service life of picks, reducing the strength of picks, and improving impact resistance and durability. Abrasiveness, good support, enhanced wear resistance

Inactive Publication Date: 2017-01-25
杨岗
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high temperature during welding will affect the internal structure of the cemented carbide, reducing the strength, wear resistance and impact resistance of the pick; thus reducing the service life of the pick

Method used

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Embodiment Construction

[0024] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0025] Such as figure 1 and 2 Said is a structural schematic diagram of a new pick in the embodiment of the present invention, which includes: a base body, a cutting tooth part and a conical annular wedge 2 provided on the base body, and the cutting tooth part includes a polycrystalline diamond composite layer 12 and a hard Alloy base 13; the pick base includes: the upper part 4 of the base and the lower part 5 of the base, the inside of the upper part of the base is a hollow structure, and the hollow structure is embedded with the cutting tooth part and the conical annular wedge 2, in addition, the base The top of the upper part is provided with a tapered hole 8, and th...

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PUM

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Abstract

The invention discloses a novel cutting pick, which comprises a base body, a cutting tooth arranged on the base body and a conical annular wedge, wherein the cutting tooth is a polycrystalline diamond compound tooth and is composed of a polycrystalline diamond compound layer and a hard alloy base; the cutting pick base body comprises a base body upper portion and a base body lower portion, the inside of the base body upper portion is of a hollow structure, the cutting tooth and the conical annular wedge are embedded into the hollow structure, and a conical hole is formed in the top of the base body upper portion; the hard alloy base of the cutting tooth, the conical annular wedge and the conical hole formed in the top of the base body upper portion are connected together through interference fit. According to the scheme, the novel cutting pick can avoid effects of soldering or hot press to the polycrystalline diamond cutting tooth, the impact resistance and the wearing resistance of the diamond compound tooth are greatly improved, and the service life of the cutting pick is greatly prolonged.

Description

technical field [0001] The invention belongs to the fields of roadway boring machines, coal shearers, shield machines and rotary drilling rigs, and in particular relates to a novel pick. Background technique [0002] In the prior art, roadheaders, fully mechanized mining machines, shield machines, and rotary drilling rigs are widely used in the construction of various coal mine tunnel excavation projects; The main part, the pick is fixed on the cutting head through the tooth seat, the pick is usually made of hard alloy tooth tip (called carbide pick), mostly in the shape of a cone, and directly fixed on the corresponding base. In the actual working process, the cutting head cuts the rock through the pick in the way of impact, and is the main stressed part. [0003] Wherein, when encountering the rock formation with higher hardness, it is subject to greater impact load and friction, and the hard alloy picks on it wear faster, which has a strong impact on work efficiency. ...

Claims

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Application Information

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IPC IPC(8): E21C35/183
CPCE21C35/183E21C35/1831E21C35/1837E21C35/197
Inventor 杨岗
Owner 杨岗
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