CN212359749U

CN212359749U - Novel promote pick of brazing intensity

Info

Publication number: CN212359749U
Application number: CN202020608276.9U
Authority: CN
Inventors: 刘能文; 黄灿
Original assignee: Zhuzhou Xinda Machinery Technology Co ltd
Current assignee: Zhuzhou Xinda Machinery Technology Co ltd
Priority date: 2020-04-22
Filing date: 2020-04-22
Publication date: 2021-01-15
Anticipated expiration: 2030-04-22

Abstract

The utility model relates to a novel promote pick of intensity of brazing, including pick base member and carbide head, pick base member top position placed in the middle is provided with a connecting hole, the carbide head sets up in the connecting hole, carbide head bottom is provided with the bump, the bump uses carbide head center as the central point, is the setting of annular array in carbide head bottom, and is a plurality of, the gap packing between carbide head and the connecting hole has the brazing filler metal to be connected with the pick base member through brazing. The bottom of the hard alloy head is provided with the salient points for supporting, so that the welding gap is ensured, the welding area is increased, the welding strength is improved, the risk that the cutting tooth drops in advance is reduced, and the service life and the working efficiency of the cutting tooth are improved.

Description

Novel promote pick of brazing intensity

Technical Field

The utility model relates to a tunnelling machine, coal-winning machine, dig rig accessory machine technical field soon, indicate a novel pick that promotes intensity of brazing very much.

Background

In the prior art, a development machine, a coal mining machine and a rotary drilling rig are widely used for various coal mine and tunnel development engineering construction; the cutting pick mainly comprises a hard alloy head and a cutting pick substrate which are connected together through copper brazing. The observation shows that in the market, the bottom of the hard alloy head of the cutting pick is a flat bottom, and the bottom of the connecting hole of the cutting pick base body is also a flat bottom. When the carbide head copper is brazed to the cutting pick base body, because the carbide head and the cutting pick base body link hole are flat bottoms (seamless), only few copper liquid links together bottom the carbide head and the cutting pick base body hole in the production process, the brazed area is reduced, the welding strength is reduced, the risk increase that the carbide head drops in advance in the cutting pick working process is caused, and the service life and the working efficiency of the cutting pick are seriously influenced.

Disclosure of Invention

The utility model discloses an aim at shortcoming and problem to exist among the background art improve and the innovation, provide a higher novel promotion of welding strength's pick.

The technical scheme of the utility model a construct a novel pick that promotes intensity of brazing, including pick base member and carbide head, pick base member top position placed in the middle is provided with a connecting hole, the carbide head sets up in the connecting hole, carbide head bottom is provided with the bump, the bump uses carbide head center as the central point, is the annular array setting in carbide head bottom, and quantity is a plurality of, the gap packing between carbide head and the connecting hole has the brazing filler metal to be connected with the pick base member through brazing.

Preferably, the bump height is 3 mm.

Preferably, the distance from the center of the salient point to the center of the hard alloy head is 10 mm.

Preferably, the number of the bumps is 3.

Preferably, the shape of the convex point is a hemisphere, and the part of the convex point connected with the hard alloy head is a round surface of the hemisphere.

The utility model has the advantages and beneficial effect:

the bottom of the hard alloy head is provided with the salient points for supporting, so that the welding gap is ensured, the welding area is increased, the welding strength is improved, the risk that the cutting tooth drops in advance is reduced, and the service life and the working efficiency of the cutting tooth are improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Figure 2 is a schematic view of the construction of the pick body.

Fig. 3 is a bottom view of a cemented carbide tip.

Description of the figures:

1-cutting pick base body, 2-hard alloy head, 3-connecting hole and 4-salient point.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "disposed" or "connected" to another element, it can be directly disposed or connected to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

As shown in fig. 1 to 3, a novel pick of promotion brazing strength, including pick base member and carbide head, pick base member top position placed in the middle is provided with a connecting hole, the carbide head sets up in the connecting hole, carbide head bottom is provided with the bump, the bump uses carbide head center as the central point, is the annular array setting in carbide head bottom, and is a plurality of, the gap packing between carbide head and the connecting hole has the brazing filler metal to be connected with the pick base member through brazing.

Example 2

On the basis of example 1, as shown in fig. 1 to 3, the bump height is 3 mm. The height is the preferred height, and can be changed according to the actual situation.

Example 3

On the basis of example 1, as shown in fig. 1 to 3, the distance from the center of the bump to the center of the cemented carbide head is 10 mm. The distance is a preferable distance and can be changed correspondingly according to actual conditions.

Example 4

On the basis of embodiment 1, as shown in fig. 1 to 3, the number of the bumps is 3. The number is the preferred number, and can be changed according to the actual situation.

Example 5

In example 1, as shown in fig. 1 to 3, the protruding point has a hemispherical shape, and the portion where the protruding point and the cemented carbide tip are connected is a circular surface of the hemispherical body. The convex points are hemispheroids, and the parts of the convex points, which are connected with the hard alloy heads, are round surfaces of the hemispheroids, so that the contact with the bottoms of the connecting holes is less, and the welding surfaces are more.

Claims

1. The utility model provides a novel promote pick of intensity of brazing, includes pick base member and carbide head, its characterized in that, pick base member top position placed in the middle is provided with a connecting hole, the carbide head sets up in the connecting hole, carbide head bottom is provided with the bump, the bump uses carbide head center as the central point, is the annular array setting in carbide head bottom, and is a plurality of, the gap packing between carbide head and the connecting hole has the brazing filler metal to be connected with the pick base member through brazing.

2. The novel pick of claim 1, wherein the bump height is 3 mm.

3. The novel pick of claim 1, wherein the distance from the center of the bump to the center of the carbide tip is 10 mm.

4. The novel pick for improving brazing strength according to claim 1, wherein the number of the salient points is 3.

5. The novel cutting pick for improving the brazing strength as claimed in claim 1, wherein the protruding point is shaped like a hemisphere, and the part of the protruding point connected with the hard alloy head is a round surface of the hemisphere.