CN214464152U

CN214464152U - Reliable-structure cutting pick

Info

Publication number: CN214464152U
Application number: CN202120602771.3U
Authority: CN
Inventors: 郭延彬
Original assignee: Henan Jinghe Mining Machinery Co ltd
Current assignee: Henan Jinghe Mining Machinery Co ltd
Priority date: 2021-03-18
Filing date: 2021-03-18
Publication date: 2021-10-22
Anticipated expiration: 2031-03-18

Abstract

The utility model relates to the technical field of mechanical equipment, specifically be a pick of reliable structure, including the toothholder, the one end fixedly connected with pick of toothholder, the one end fixedly connected with location tooth of toothholder is kept away from to the toothholder, the one end fixedly connected with lantern ring of toothholder is kept away from to the toothholder, the inside fixedly connected with carbide head of the lantern ring, the outer fixed surface of the lantern ring is connected with wear-resisting piece. The utility model has the advantages that: through setting up location tooth and constant head tank, location tooth and constant head tank meshing, part during operation, the torsion of carbide head is overcome to the location tooth, the carbide head does not receive the influence of torsion with the splice of the lantern ring, thereby the cracked problem of splice has been avoided, low to welding technical requirement, the production of being convenient for, through hiding the inside at wear-resisting piece with the welding seam department of the lantern ring, make carbide head and wear-resisting piece and rock contact, thereby the welding position can not produce wearing and tearing, moreover, the steam generator is simple and reasonable in structure, and the service life of cutting tooth is prolonged.

Description

Reliable-structure cutting pick

Technical Field

The utility model relates to a mechanical equipment technical field, especially a pick of reliable structure.

Background

Coal mining machines and heading machines are widely applied to coal industrial production at home and abroad. The cutting picks with different specifications and different quantities are indispensable parts easy to wear and tear and are arranged on the coal mining machine and the heading machine. The cylindrical part of the cutting pick is a tooth handle, the conical part is a tooth head, the tooth handle and the tooth head are combined to form a tooth body, the top end of the tooth head is welded with a hard alloy head, and the tooth body and the hard alloy head form a complete cutting pick.

When the existing cutting pick is produced, a hard alloy head is usually inserted into a groove at the top of the cutting pick head, and then the hard alloy head is fixed through welding, so that the existing cutting pick has the following defects when in use:

1. when the cutting pick is used, the heading machine enables the cutting pick to be in friction with rock by rotating the cutting pick, so that the purpose of crushing the rock is achieved, the hard alloy head has a large torsion in the cutting pick head in the process of rotation and rock friction, if the welding firmness is not enough, a welding seam can crack, so that the hard alloy head falls off, the welding technical requirement is high, and the production is inconvenient;

2. when the cutting pick is used, the welding position can also contact with the rock to generate abrasion, so that the firmness of the welding position is gradually reduced along with the increase of the abrasion degree, and the service life is short.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's shortcoming, provide a reliable pick of structure.

The purpose of the utility model is realized through the following technical scheme: the utility model provides a pick of reliable structure, includes the toothholder, the one end fixedly connected with pick head of toothholder, the one end fixedly connected with location tooth of toothholder is kept away from to the pick head, the one end fixedly connected with lantern ring of toothholder is kept away from to the pick head, the inside fixedly connected with carbide head of the lantern ring, the outer fixed surface of the lantern ring is connected with wear-resisting piece.

Preferably, the lantern ring is composed of a plurality of arc-shaped plates, and a gap exists between two adjacent arc-shaped plates.

Preferably, the bottom of the hard alloy head is provided with a positioning groove, and the positioning groove is meshed with the positioning teeth.

Preferably, the outer diameter of the collar is smaller than the diameter of the top surface of the tooth head, and the inner diameter of the collar is equal to the diameter of the hard alloy head.

Preferably, the material of the wear-resistant block is the same as that of the hard alloy head.

The utility model has the advantages of it is following:

1. according to the cutting pick with the reliable structure, the positioning teeth and the positioning grooves are arranged and meshed, when a part works, the positioning teeth overcome the torsion of the hard alloy head, and the welding position of the hard alloy head and the lantern ring is not affected by the torsion, so that the problem that the hard alloy head falls off due to the fracture of the welding position is solved, the welding technical requirement is low, and the production is convenient;

2. this pick of reliable structure, through hiding the inside at wear-resisting piece with the welding seam department of carbide head and lantern ring, make carbide head and wear-resisting piece and rock contact, the welding position does not contact with the rock to the welding position can not produce wearing and tearing, and simple structure is reasonable, has prolonged the life of pick.

Drawings

Fig. 1 is a schematic exploded view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic structural view of the tooth body of the present invention;

fig. 4 is a schematic structural view of the cemented carbide head of the present invention.

In the figure: 1-tooth handle, 2-tooth head, 3-positioning tooth, 4-lantern ring, 5-hard alloy head, 6-wear-resistant block and 7-positioning groove.

Detailed Description

The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following description.

As shown in fig. 1-4, a pick with a reliable structure, which comprises a pick handle 1, a one end fixedly connected with tooth head 2 of the pick handle 1, one end fixedly connected with positioning teeth 3 of the tooth head 2 away from the pick handle 1, one end fixedly connected with lantern ring 4 of the tooth head 2 away from the pick handle 1, an inside fixedly connected with cemented carbide head 5 of the lantern ring 4, the cemented carbide head 5 is welded inside the lantern ring 4, an outer surface fixedly connected with wear-resistant block 6 of the lantern ring 4, the wear-resistant block 6 is fixed on the outer surface of the lantern ring 4 through a sintering warm-pressing forging forming technology, the lantern ring 4 is protected, and the problem that the lantern ring 4 is worn when the pick works is avoided.

As a preferred technical scheme of the utility model, lantern ring 4 comprises a plurality of arcs, and has the clearance between two adjacent arcs, and stereoplasm alloy head 5 pegs graft in lantern ring 4 back, pours alloy powder into the gap between the arcs in, then utilizes sintering technique to melt alloy powder to with the welding of stereoplasm alloy head 5 in the inside of lantern ring 4, accomplish the fixed to stereoplasm alloy head 5.

As a preferred technical scheme, constant head tank 7 has been seted up to the bottom of carbide head 5, constant head tank 7 meshes with location tooth 3, when this pick was installed and is used on mechanical equipment, the pick is rotatory, carbide head 5 and rock friction, through the meshing of location tooth 3 with constant head tank 7, make location tooth 3 overcome carbide head 5's torsion, carbide head 5 does not receive the influence of torsion with the welding department of the lantern ring 4, thereby avoided the fracture problem that leads to carbide head 5 to drop of welding department, low to welding technical requirement, the production of being convenient for.

As a preferred technical scheme of the utility model, the external diameter of the lantern ring 4 is less than the diameter of 2 top surfaces of tooth head, and the internal diameter of the lantern ring 4 equals the diameter of cemented carbide head 5.

As an optimal technical scheme, the material of wear-resisting piece 6 is the same with the first 5 materials of carbide, put at the surface of the lantern ring 4 through the alloy powder the same with the first 5 materials of carbide, then utilize the warm pressure forging shaping of high temperature sintering, thereby form wear-resisting piece 6, and wear-resisting piece 6 contains appropriate amount cobalt, guarantee 2 high strength wear-resisting toughness that keep enough good in the time of tooth head, the pick is under operating condition, wear-resisting piece 6 and rock contact, wear-resisting piece 6 protects lantern ring 4, thereby the first 5 of carbide can not worn and torn with the welding department of the lantern ring 4, moreover, the steam generator is simple and reasonable in structure, the service life of pick has been prolonged.

The working process of the utility model is as follows: after the hard alloy head 5 is inserted into the lantern ring 4, alloy powder is poured into a gap between the arc plates, then the alloy powder is melted by a sintering technology, the hard alloy head 5 is welded inside the lantern ring 4, then the alloy powder with the same material as the hard alloy head 5 is placed on the outer surface of the lantern ring 4, then high-temperature sintering is used, a wear-resistant block 6 is formed, the hard alloy head 5 and the wear-resistant block 6 are in contact with rock when the cutting pick is in a working state, the lantern ring 4 is protected by the wear-resistant block 6, and the positioning teeth 3 and the positioning grooves 7 resist the torsion of the hard alloy head 5.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A reliable structure's pick which characterized in that: including tooth handle (1), one end fixedly connected with tooth head (2) of tooth handle (1), one end fixedly connected with location tooth (3) of tooth handle (1) are kept away from in tooth head (2), the one end fixedly connected with lantern ring (4) of tooth handle (1) are kept away from in tooth head (2), the inside fixedly connected with carbide head (5) of the lantern ring (4), the outer fixed surface of the lantern ring (4) is connected with wear-resisting piece (6).

2. A structurally sound cutting pick according to claim 1, wherein: the lantern ring (4) is composed of a plurality of arc-shaped plates, and a gap exists between every two adjacent arc-shaped plates.

3. A structurally sound cutting pick according to claim 1, wherein: the bottom of the hard alloy head (5) is provided with a positioning groove (7), and the positioning groove (7) is meshed with the positioning teeth (3).

4. A structurally sound cutting pick according to claim 1, wherein: the outer diameter of the lantern ring (4) is smaller than the diameter of the top surface of the tooth head (2), and the inner diameter of the lantern ring (4) is equal to the diameter of the hard alloy head (5).

5. A structurally sound cutting pick according to claim 1, wherein: the material of the wear-resistant block (6) is the same as that of the hard alloy head (5).