CN217421161U - Novel coal cutter cutting tooth - Google Patents

Abstract

The utility model discloses a novel cutting tooth of a coal mining machine, which relates to the technical field of coal mining machinery and comprises a tooth body, a tooth head and a tooth handle; the tooth body is conical, a tooth head mounting hole is formed in the conical end of the tooth body, the tooth body is connected with the tooth head through the tooth head mounting hole, and one end, far away from the tooth head, of the tooth body is connected with the tooth handle; be equipped with the wearing layer on the lateral wall of shaft cone end, the utility model discloses can protect the pick to improve the wearability of pick, improve life, thereby improve excavation efficiency.

Description

Novel coal cutter cutting tooth

Technical Field

The utility model relates to a coal mining machinery technical field, concretely relates to novel coal-winning machine pick.

Background

The cutting picks in the coal mining machine and the heading machine are very important parts of the fully-mechanized mining and excavating equipment of the coal mine, and the performance of the cutting picks directly influences the excavating efficiency. However, the existing cutting pick is integrally formed, the wear resistance and hardness of the cutting pick are weak, and the service life is short.

Disclosure of Invention

In order to solve the technical problem, the main object of the utility model is to provide a novel coal mining machine pick.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A novel cutting pick of a coal mining machine comprises a pick body, a pick head and a pick handle; the tooth body is conical, a tooth head and tooth head mounting hole is formed in a conical head of the tooth body, and the tooth head is mounted in the tooth head mounting hole; the cone tail of the tooth body is connected with the tooth handle; and the outer side wall of the tooth body close to the cone head is provided with a wear-resistant layer.

Further, the width of the wear-resistant layer is 30 mm, and the thickness of the wear-resistant layer is 3 mm.

Further, the wear-resistant layer is a spiral welding belt layer arranged on the tooth body.

Further, the width of the helical solder fillet layer is 3 mm, and the pitch of the helical solder fillet layer is 2 mm.

Furthermore, a plurality of salient points are uniformly distributed on the outer surface of the spiral welding belt layer along the spiral line direction.

Further, the height of the salient point is 1 mm.

Further, the taper of the tooth body is 1: 4.

Furthermore, the head of the conical end of the tooth body is also provided with a lip ring, and the lip ring is positioned on the left side of the wear-resistant layer.

Further, the tooth head is made of 42CrMo steel alloy.

The utility model discloses technical scheme can protect the pick to improve the wearability of pick, improve life, thereby improve mining efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a partial sectional view of the present invention;

fig. 2 is a schematic structural diagram of the present invention.

In the above figures: 1. a tooth body; 2. a tooth head; 3. a gear handle; 4. a tooth head mounting hole 4; 5. a wear layer; 51. a helical solder ribbon layer; 6. salient points; 7. a lip ring.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of other ways than those described herein, and those skilled in the art will be able to make similar generalizations without departing from the spirit of the invention. The invention is therefore not limited to the specific embodiments disclosed below.

Referring to fig. 1, the novel coal cutter cutting pick comprises a pick body 1, a pick head 2 and a pick shank 3; the tooth body 1 is conical, a tooth head and tooth head mounting hole 4 is formed in the conical head of the tooth body 1, and a tooth head 2 is mounted in the tooth head mounting hole 4; the cone tail of the tooth body 1 is connected with the tooth handle 3; the outer side wall of the tooth body 1 close to the cone head is provided with a wear-resistant layer 5.

In the above embodiment, after the cutting teeth are mounted, the cutting teeth are fixed by welding, so that the cutting teeth are integrated, the overall strength of the cutting teeth is improved, powder alloy is repair-welded at the cone end of the tooth body 1, the wear resistance of the cone end is improved, the cone surface of the tooth body 1 can reduce cutting resistance by setting the tooth body 1 into a cone shape, so as to facilitate cutting of a coal bed, the wear-resistant layer 5 is arranged at the cone end of the tooth body 1 by brazing, so that the cutting teeth can be protected, the wear resistance of the cutting teeth is improved, the service life is prolonged, the excavating efficiency is improved, and meanwhile, the quenching process of the cutting teeth is changed from integral quenching into sectional quenching, tissues such as martensite and pearlite are formed, the hardness and the toughness of the metallographic structure of the metal surface are both considered, the problem that the tooth head 2 is quenched and cracked at high temperature is avoided, and the overall wear resistance of the cutting teeth is improved.

Further, referring to fig. 1, the width of the wear-resistant layer 5 is 30 mm, and the thickness of the wear-resistant layer 5 is 3 mm.

In the embodiment, the width of the wear-resistant layer 5 is set to be 30 mm, and the thickness of the wear-resistant layer 5 is 3 mm, so that the wear-resistant layer 5 can protect the cutting pick, the wear resistance of the cutting pick is effectively improved, and meanwhile, the cost can be saved.

Further, referring to fig. 1, the wear resistant layer 5 is a helical band layer 51 provided on the tooth body 1.

In the above embodiment, the cutting teeth are spirally welded to form the spiral welding belt layer 51 on the wear resistant layer 5, so that the cutting teeth can simultaneously cut the coal rock in revolution and rotation, thereby reducing cutting resistance and improving cutting effect.

Further, referring to fig. 1, the width of the helical solder ribbon layer 51 is 3 mm, and the pitch of the helical solder ribbon layer 51 is 2 mm.

In the above embodiment, when the wear-resistant layer 5 is subjected to spiral welding, the spiral weld tape layer 51 is overlapped by 0.5 mm on both sides, so that the wear-resistant layer 5 is formed more compactly, the abrasion resistance effect of the wear-resistant layer 5 can be greatly increased, and the service life of the cutting pick is further prolonged.

Further, referring to fig. 1, a plurality of bumps 6 are uniformly distributed on the outer surface of the spiral solder strip layer 51 along the spiral direction.

In the above embodiment, by providing the salient points 6, the abrasion of the cutting pick to the wear-resistant layer 5 during working can be reduced, so that the service life of the cutting pick is prolonged.

Further, referring to fig. 1, the height of the bump 6 is 1 mm.

In the above embodiment, the height of the salient point 6 is 1mm, so that when the cutting pick works, the salient point can play a role in resisting abrasion, and the normal work of the cutting pick cannot be hindered due to the increase of excessive friction force.

Further, referring to fig. 1, the taper of the tooth body 1 is 1: 4.

In the above embodiment, by setting the taper of the tooth body 1 to 1:4, the taper of the tooth body 1 can be made to have the best effect in reducing the cutting resistance, thereby improving the cutting effect.

Further, the head of the conical end of the tooth body 1 is also provided with a lip ring 7, and the lip ring 7 is positioned on the left side of the wear-resistant layer 5.

In the above embodiment, the lip ring 7 is arranged to increase the thickness of the conical end of the pick body 1, so that the problems of carbon oxidation, loss and stress concentration of the lip at the conical end of the pick body 1 are solved when the cutting pick is quenched at high temperature, and the comprehensive mechanical strength is improved.

The tooth head 2 is made of 42CrMo steel alloy.

In the above embodiment, the 42CrMo steel belongs to the ultrahigh strength steel, has high strength and toughness, and hardenability is also better, does not have obvious temper brittleness, has higher fatigue limit and anti multiple impact ability after the quenching and tempering, and low temperature impact toughness is good to play the effect that improves the pick hardness, make the pick when cutting the coal petrography, can be more convenient effective.

Although the invention has been described in detail in this specification with reference to specific embodiments and illustrative embodiments, it will be apparent to those skilled in the art that certain changes and modifications can be made therein without departing from the scope of the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims (9)

1. The utility model provides a novel coal-winning machine pick which characterized in that: comprises a tooth body (1), a tooth head (2) and a tooth handle (3); the tooth body (1) is conical, a tooth head mounting hole (4) is formed in the conical head of the tooth body (1), and the tooth head (2) is mounted in the tooth head mounting hole (4); the cone tail of the tooth body (1) is connected with the tooth handle (3); and the outer side wall of the tooth body (1) close to the conical head is provided with a wear-resistant layer (5).

2. A novel shearer pick according to claim 1, wherein the width of the wear-resistant layer (5) is 30 mm, and the thickness of the wear-resistant layer (5) is 3 mm.

3. A new shearer pick as claimed in claim 2, wherein the wear layer (5) is a helical weld tape layer (51) provided on the pick body (1).

4. A novel shearer pick as claimed in claim 3, wherein the width of the helical solder strip layer (51) is 3 mm and the pitch of the helical solder strip layer (51) is 2 mm.

5. A novel shearer pick as claimed in claim 3, wherein the helical weld tape layer (51) has a plurality of protruding points (6) distributed on the outer surface along the helical direction.

6. A new shearer pick as claimed in claim 5, wherein the height of the projections (6) is 1 mm.

7. A new shearer pick according to claim 1, wherein the taper of the pick body (1) is 1: 4.

8. A novel shearer pick as claimed in claim 1, wherein the head of the conical end of the pick body (1) is further provided with a lip ring (7), the lip ring (7) being located at the front side of the wear layer (5).

9. A new shearer pick as claimed in claim 1, characterized in that the pick head (2) is provided as 42CrMo steel alloy.

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