CN202451159U

CN202451159U - Welding-free conical cutting tooth

Info

Publication number: CN202451159U
Application number: CN2012200794036U
Authority: CN
Inventors: 侯树成; 宋胜伟; 叶耀川
Original assignee: Heilongjiang University of Science and Technology
Current assignee: Heilongjiang University of Science and Technology
Priority date: 2012-03-06
Filing date: 2012-03-06
Publication date: 2012-09-26
Anticipated expiration: 2022-03-06

Abstract

The utility model relates to a welding-free conical cutting tooth for equipment as a coal mining machine and a tunneling machine, which includes a cutting tooth body (1), a cutting tooth head (2), clamp jaws (6) and a hard alloy cutter bit (7), wherein the hard alloy cutter bit (7) and the cutting tooth head (2) are detachable; the three clamp jaws (6) are arranged on the cutting tooth head (2), and the hard alloy cutter bit (7) is fixedly connected onto the cutting tooth head (2) through the clamp jaws (6); the contact surface of the clamp jaws (6) and the cutting tooth head (2) is trapezoid, and the clamp jaws (6) higher than the conical surface of the cutting tooth head (2) form ribs; and a tooth ring (5) is assembled on the cutting tooth head (2) and embedded in the cutting tooth body (1). The conical cutting tooth not only solves the problem of infirm welding brought by brazing, but also ensures better rotation of the cutting tooth because the clamp jaws are higher than the conical surface of the cutting tooth head (2) to form the ribs, and effectively prevent the eccentric wear of the hard alloy cutter bit (7); and furthermore, the hard alloy cutter bit (7) with high possibility of eccentric wear can be independently replaced, the reuse rate of the cutting tooth body (1) and the cutting tooth head (2) is improved, and the effect of energy saving is achieved. The welding-free conical cutting tooth has scientific and reasonable structural design, is highly practical, and prolongs the service life of the cutting tooth.

Description

A kind ofly exempt to weld pick-like bit

Technical field

The utility model relates to mining machine equipment, be specifically related to a kind of be used for equipment such as coal-winning machine, development machine exempt from the welded type pick-like bit.

Background technology

Along with expanding economy, as the pick of vitals on coal-winning machine and the development machine, its functional performance directly has influence on the operating efficiency of coal-winning machine and development machine.Pick-like bit mainly comprises pick body and the soldering carbide bit composition on the pick body; In the use, the pick body is near the carbide bit serious wear, causes carbide bit to lose protection and supports and come off and scrap; So; Not only cause pick low application life, and pick integral body scraps, cause unnecessary waste.

Simultaneously, adopt soldering to have the even phenomenon of weld seam uneven distribution, the unstable intractable defective of soldering is prone to cause carbide bit to come off, and influences the whole service life of pick body.

Summary of the invention

Scrap in order to overcome the used pick integral body of equipment such as existing coal-winning machine, development machine; Problems such as brazing defect; The utility model proposes a kind of pick-like bit of exempting to weld, and this pick-like bit has not only overcome the deficiency of prior art, even and under the situation of carbide bit generation eccentric wear; Can change carbide bit separately, guarantee that pick body and cutting pick head can reuse; Simultaneously, the defective of having avoided welding to bring.

The technical scheme that the utility model adopted is: a kind ofly exempt to weld pick-like bit, comprise pick body 1, cutting pick head 2, claw 6 and carbide bit 7, carbide bit 7 can be dismantled with cutting pick head 2; It is characterized in that: said cutting pick head 2 is provided with three claws 6, through claw 6 carbide bit 7 is fixedly connected on the cutting pick head 2; Said claw 6 is trapezoidal with cutting pick head 2 contact surfaces, and exceeds cutting pick head 2 taper seats formation fin.

In addition, said cutting pick head 2 is equipped with gear ring 5, inlays to be connected on the pick body 1.

The application's beneficial effect is: this pick-like bit has not only solved problems such as the welding that brings because of soldering is insecure, and claw is higher than the cutting pick head taper seat and becomes fin, has guaranteed that pick better rotates, and has effectively prevented carbide bit generation eccentric wear phenomenon.In addition,, can change the carbide bit that is prone to eccentric wear separately, improve the repeat usage of pick body and cutting pick head, reach the effect that economizes on resources because carbide bit and cutting pick head can be dismantled.It is reasonable, practical to have scientific structure design, has improved the application life of pick.

Description of drawings

Fig. 1 is a kind of Structure of Conical Bits figure that exempts to weld;

Fig. 2 is a kind of pick-like bit vertical view of exempting to weld;

Fig. 3 is that the A-A of Fig. 2 is to sectional view;

Wherein: 1 is the pick body, and 2 is snap ring, and 3 is cutting pick head, and 4 is bevel gear, and 5 is gear ring, and 6 is claw, and 7 is carbide bit.

The specific embodiment

The utility model proposes a kind of pick-like bit of exempting to weld, and like Fig. 1, Fig. 2 and shown in Figure 3, its objective is to reach and eliminate the hidden danger that welding brings that pick body 1 can reuse and help rotation with cutting pick head 2.This kind exempted to weld pick-like bit and mainly is made up of pick body 1, cutting pick head 2, claw 6 and carbide bit 7, and cutting pick head 2 is provided with three claws 6, under claw 6 effects, carbide bit 7 is fixedly connected on the cutting pick head 2; At this moment, claw 6 still exceeds cutting pick head 2 taper seats formation fin; Earlier gear ring 5 is assemblied on the cutting pick head 2, then cutting pick head 2 is embedded on the pick body 1.

Because carbide bit 7 is to be connected on the cutting pick head 2 through claw 6, avoided the unstable problem of welding, can regulate gear ring 5 through the bevel gear 4 that is fixed on by snap ring 3 on the cutting pick head 2, realize changing carbide bit 7.In broken coal process, coal will be with different angle generation avalanches, and the fin that coal fall forms cutting pick head 2 top jaw 6 produces bigger cutting resistance, makes this pick-like bit along rotated by force direction, have prevented that effectively carbide bit 7 from the eccentric wear phenomenon taking place.

Claims

1. exempt to weld pick-like bit for one kind, comprise pick body, cutting pick head, claw and carbide bit, carbide bit and cutting pick head can be dismantled; It is characterized in that: said cutting pick head is provided with three claws, through claw carbide bit is fixedly connected on the cutting pick head; Said claw and cutting pick head contact surface are trapezoidal, and exceed cutting pick head taper seat formation fin.

2. a kind of pick-like bit of exempting to weld according to claim 1, it is characterized in that: said cutting pick head is equipped with gear ring, inlays to be connected on the pick body.