CN201412154Y

CN201412154Y - Abrasion-resistant head-shedding prevention point-attack cutting pick

Info

Publication number: CN201412154Y
Application number: CN2009200893468U
Authority: CN
Inventors: 刘鸣放; 王春林; 杨炳; 何明
Original assignee: Henan Coal Science Research Institute Co Ltd; HENAN IGOOD WEAR-RESISTING TECHNOLOGY Co Ltd
Current assignee: Henan Coal Science Research Institute Co Ltd; HENAN IGOOD WEAR-RESISTING TECHNOLOGY Co Ltd
Priority date: 2009-04-01
Filing date: 2009-04-01
Publication date: 2010-02-24
Anticipated expiration: 2019-04-01

Abstract

The utility model relates to an abrasion-resistant head shedding prevention point-attack cutting pick, which can effectively prevent a tooth head from shedding, improve overall strength of the cuttingpick and realize abrasion resistance. For solving the problems, the utility model adopts the technical scheme as follows: the cutting pick comprises a tooth body, the tooth head and a tooth handle, wherein, the tooth body adopts a cone-shaped body, grooves are evenly distributed along the cone-shaped body from the top to the bottom, strip-shaped strengthening ribs formed by melting and coating ceramal powder are arranged in the grooves, the strengthening ribs are metallurgically combined with the tooth body, a round hole is formed at the top end of the tooth body, and the tooth head is arranged in the round hole and welded with the round hole together. The cutting pick has the advantages of simple structure and high product quality, can effectively prevent the tooth head from shedding, greatly enhance the overall strength and the abrasion resistance of the cutting pick, and has significant economic benefits.

Description

Wear-proof head separation prevention pickaxe type cutting pick

One, technical field

The utility model relates to engineering goods, the wear-proof head separation prevention pickaxe type cutting pick of the cutting part of particularly a kind of colliery extractive equipment.

Two, background technology

Used pick-shaped cutter on the extractive equipment of present colliery, major part is to be made through technologies such as machine, soldering and heat treatments by alloy steel denticle and hard-metal insert head, and its life-span length is determined by quality, soldering processes and the Technology for Heating Processing of hard-metal insert head.Pick normal abandonment and the principal element of scrapping too early are that the hard-metal insert head comes off.The reason that causes the tooth head to come off mainly contains denticle and is connected loosening two kinds with the joint portion of tooth head is worn out with the tooth head with the bad denticle that causes of brazing quality.In order to address this problem, people are studying better pick-shaped cutter always.As Heilungkiang institute designed the carbide bit shearer pick-shaped cutter of tapering " band " is denticle is bored from bottom to top and to form up-small and down-big taper hole at the denticle top, supporting with it tapered hard is closed the tooth golden head hold out against from the bottom, denticle tooth head two conical surfaces are closely linked with the push rod screw.This pick descends because of denticle hollow causes the bulk strength of pick.What also have prevents that with embedding method the tooth head from coming off.As Jiamusi institute designed " coal-winning machine castingin pick " is earlier the hard-metal insert head to be managed fixing cast molding again, and same the influence because of the denticle strength deficiency of casting of this pick applied.Also have person skilled on brazing material and technology and whole heat treatment process, to seek better solution, but effect is all not obvious.

In sum, also do not have a kind of tooth head that not only effectively prevented to come off but also strengthened pick bulk strength and abrasion resistance pick-like bit at present, therefore, how effectively to solve this technical barrier, by being paid close attention in the industry.

Three, utility model content

At above-mentioned situation, for overcoming the prior art defective, the purpose of the utility model just provides a kind of wear-proof head separation prevention pickaxe type cutting pick, can effectively solve and prevent that the tooth head from coming off and can improve the problem of pick bulk strength and abrasion resistance, the technical scheme of its solution is, include denticle, tooth head and tooth handle, denticle is a bullet, be evenly equipped with groove from top to bottom along bullet, the strip reinforcing rib that the ceramal powder melting becomes is housed in the groove, reinforcing rib and denticle are metallurgical binding, there is circular hole on the denticle top, the tooth head is contained in the circular hole, welds together, and this reality has new structure simple, the product quality height, prevent that effectively the tooth head from coming off, strengthened pick bulk strength and abrasion resistance greatly, remarkable economic efficiency is arranged.

Four, description of drawings

Fig. 1 is the structural front view of the utility model converted products.

Fig. 2 is the structure vertical view of the utility model converted products.

Fig. 3 is partly cut-away's front view of the utility model converted products.

Fig. 4 be among the utility model Fig. 1 A-A to sectional view.

Five, the specific embodiment

Below in conjunction with accompanying drawing the specific embodiment of the present utility model is elaborated.

Provide by Fig. 1-4, the utility model includes denticle, tooth head and tooth handle, denticle 1 is a bullet, be evenly equipped with groove 6 from top to bottom along bullet, the strip reinforcing rib 2 that the ceramal powder melting becomes is housed in the groove, and reinforcing rib 2 is a metallurgical binding with denticle 1, and there is circular hole 5 on the denticle top, tooth head 3 is contained in the circular hole 5, welds together.

In order to guarantee result of use, said groove 6 is a 6-8 uniform strip slot, wide 5-6mm, dark 2-3mm; Said reinforcing rib 2 is and the corresponding 6-8 of a groove quantity strip shape body; Said circular hole 5 inwalls are shape of threads, and tooth head 3 is the face of cylinder, and the screw thread that matches with circular hole 5 internal threads is arranged on its face, and tooth head 3 spinnings by at the bottom of the full hole of the scolder of fusing and thread pitch, are solidified as a whole its condensation in circular hole.

In force, said reinforcing rib 2 is preferably by groove and becomes symmetrical 6 or 8 with the ceramal powder melting, also 7 strip reinforcing ribs that can be become with the ceramal powder melting by the groove of 7 uniform wide 5.5mm, dark 2.5mm.

By above-mentioned situation as can be seen, the utility model has increased bonding area owing to the tooth head has adopted to be threaded with denticle, this moment, the adhesion of tooth head denticle was weld force and the dual stack of fastening force, therefore, increased the bonding strength of the two greatly, reached and prevent the tooth head purpose that comes off, played wear-resisting and double action permanent tooth along the uniform reinforcing rib of conical surface symmetry, this is that other wear-proof head separation prevention pickaxe type cutting pick institutes are inaccessible at present, has remarkable economic efficiency.

Claims

1, a kind of wear-proof head separation prevention pickaxe type cutting pick, include denticle, tooth head and tooth handle, it is characterized in that, denticle (1) is a bullet, is evenly equipped with groove (6) from top to bottom along bullet, and the strip reinforcing rib (2) that the ceramal powder melting becomes is housed in the groove, reinforcing rib (2) is a metallurgical binding with denticle (1), there is circular hole (5) on the denticle top, and tooth head (3) is contained in the circular hole (5), welds together.

2, wear-proof head separation prevention pickaxe type cutting pick according to claim 1 is characterized in that, said groove (6) is a 6-8 uniform strip slot, wide 5-6mm, dark 2-3mm.

3, wear-proof head separation prevention pickaxe type cutting pick according to claim 1 is characterized in that, said reinforcing rib (2) is and the corresponding 6-8 of a groove quantity strip shape body.

4, wear-proof head separation prevention pickaxe type cutting pick according to claim 1, it is characterized in that, said circular hole (5) inwall is shape of threads, tooth head (3) is the face of cylinder, the screw thread that matches with circular hole (5) internal thread is arranged on its face, tooth head (3) spinning by at the bottom of the full hole of the scolder of fusing and thread pitch, is solidified as a whole its condensation in circular hole.

5, wear-proof head separation prevention pickaxe type cutting pick according to claim 1, it is characterized in that, said reinforcing rib (2) is to become 6 or 8 of symmetry with the ceramal powder melting by groove, or 7 strip reinforcing ribs that become with the ceramal powder melting by the groove of 7 uniform wide 5.5mm, dark 2.5mm.