CN115182726A - Powder cushion buffer cutting pick and maintenance method thereof - Google Patents
Powder cushion buffer cutting pick and maintenance method thereof Download PDFInfo
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- CN115182726A CN115182726A CN202210659689.3A CN202210659689A CN115182726A CN 115182726 A CN115182726 A CN 115182726A CN 202210659689 A CN202210659689 A CN 202210659689A CN 115182726 A CN115182726 A CN 115182726A
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- metal powder
- alloy head
- pick
- mounting groove
- powder
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
- E21C35/183—Mining picks; Holders therefor with inserts or layers of wear-resisting material
- E21C35/1831—Fixing methods or devices
Abstract
A powder cushion buffer pick and a maintenance method thereof are provided, wherein the pick comprises a substrate, an alloy head and a metal powder cushion; the top of the base body is provided with an installation groove in interference fit with the lower part of the alloy head; the bottom of the mounting groove is filled with a metal powder cushion layer; the metal powder buffer layer is connected with the lower part of the alloy head; because the metal powder cushion layer is filled with tiny gaps, the metal powder cushion layer can be compressed and deformed when the alloy head bears working impact every time, and has the functions of buffering and energy absorption; therefore, the problems of a welding structure in the background technology are solved in a soft-cutting-tool mode, the service life of the cutting pick is prolonged, when the alloy head is abraded, the alloy head and the metal powder cushion layer can be replaced for the cutting pick by the maintenance method, and the service life of a cutting pick base body can be further prolonged.
Description
Technical Field
The invention relates to the technical field of crushing and grinding tools, in particular to a powder cushion buffer cutting pick and a maintenance method thereof.
Background
The cutting pick is mainly used for engineering rotary digging, coal mining, tunnel tunneling, road milling and digging, and is a consumable product arranged on mining equipment and mainly applied to rocks.
The cutting pick head comprises a lower base body and an alloy grinding head on the base body, wherein a groove for mounting the alloy grinding head is formed in the upper face of the base body, the alloy grinding head comprises a lower mounting part and an upper working face, and the alloy grinding head is inserted into the groove through the mounting part to realize fixed mounting.
In the prior art, most of the mounting positions of the alloy grinding head are welded on the groove of the substrate; the lower surface of the mounting part of the grinding head is in rigid contact with the upper surface of the groove, and in the using process, the impact stress generated after the alloy grinding head is impacted is mainly concentrated at the welding part, and the strength of the welding part is lower and is not enough to resist the impact stress, so that the alloy grinding head is easy to disjoint and fall off from the groove, and the normal use and the service life of the cutting tooth are influenced.
Disclosure of Invention
The invention aims to solve the problems and provides a powder cushion buffer cutting pick and a maintenance method thereof.
The technical scheme of the invention is as follows: the utility model provides a powder cushion buffering pick, includes base member, alloy head, its characterized in that: the top of the base body is provided with a sunken alloy head mounting groove along the axial direction, and the lower part of the alloy head is inserted into the mounting groove and is mounted in an interference fit manner; the bottom of the mounting groove is filled with a metal powder cushion layer; the metal powder cushion layer is in contact with the bottom of the alloy head.
Preferably, the lower part of the base body is provided with a connecting rod, the upper part of the base body is a conical bearing seat body, the lower end of the bearing seat body is a disk body, the diameter of the disk body is larger than that of the connecting rod, and the mounting groove is located in the center of the top end of the bearing seat body.
Preferably, the part of the upper part of the alloy head, which exceeds the mounting groove, is a diamond layer.
Preferably, the metal powder buffer layer has a thickness of at least 0.5 mm.
A method for maintaining the powder cushion layer buffering cutting pick,
a. removing the alloy head;
b. removing the compacted metal powder cushion layer;
c. adding metal powder which is not compacted to the bottom of the mounting groove, and spreading for a certain thickness to form a new metal powder buffer cushion;
d. and installing a new alloy head.
Furthermore, the metal powder formed by crushing the metal powder cushion layer taken out in the step b is reused in the step c.
The beneficial effects of the invention are: the invention provides a powder cushion buffer cutting pick and a maintenance method thereof, wherein the cutting pick comprises a base body, an alloy head and a metal powder cushion layer; the top of the base body is provided with a sunken alloy head mounting groove along the axial direction, and the lower part of the alloy head is inserted into the mounting groove and is mounted in an interference fit manner; the bottom of the mounting groove is filled with a metal powder cushion layer; the metal powder cushion layer is in contact with the bottom of the alloy head. Because the metal powder cushion layer is filled with tiny gaps, the metal powder cushion layer can be compressed and deformed when the alloy head bears working impact every time, and has the functions of buffering and energy absorption; therefore, the problems of a welding structure in the background technology are solved in a soft-cutting-tool mode, the service life of the cutting pick is prolonged, when the alloy head is abraded, the alloy head and the metal powder cushion layer can be replaced for the cutting pick by the maintenance method, and the service life of a cutting pick base body can be further prolonged.
When this pick is maintained, metal powder cushion layer can also retrieve reutilization after the breakage.
Drawings
FIG. 1 is a schematic structural diagram of the first embodiment;
in the figure: 1. the device comprises a base body, 11 parts of a mounting groove, 12 parts of a connecting rod, 2 parts of an alloy head, 21 parts of a diamond grinding block and 3 parts of a metal powder buffer layer.
Detailed Description
The first embodiment is as follows: referring to fig. 1, the powder cushion buffering cutting pick comprises a base body and an alloy head, wherein a concave alloy head installation groove is formed in the top of the base body along the axial direction, and the lower portion of the alloy head is inserted into the installation groove and installed in an interference fit manner; the bottom of the mounting groove is filled with a metal powder cushion layer; the metal powder buffer layer is in contact with the bottom of the alloy head. Because the metal powder cushion layer is filled with tiny gaps, the metal powder cushion layer can be compressed and deformed when the alloy head bears working impact every time, and has the functions of buffering and energy absorption; therefore, the problem of the welding structure in the background technology is solved in a flexible steel mode, and the service life of the cutting pick is prolonged.
The base member lower part be equipped with the connecting rod, the upper portion of base member is conical bears the pedestal, bears the pedestal lower extreme and is the disk body, the disk body diameter is greater than the diameter of connecting rod, the mounting groove be located bear the top centre of pedestal. And the connecting rod at the lower part of the base body is used for being arranged on the driving device.
The part of the upper part of the alloy head, which exceeds the mounting groove, is a diamond layer.
The buffer layer of metal powder has a thickness of at least 0.5 mm.
The metal powder is formed by mixing Fe, ni, cr, si, mo and other powder with WC powder according to a certain proportion, but is not limited to the components.
The method for mounting the alloy head and the base body in the embodiment can adopt cold pressing mounting in which the alloy head is directly pressed in by a press at room temperature.
Of course, the following thermal expansion and contraction type installation method is preferred as the installation method, which can reduce the abrasion between the joint surfaces of the alloy head and the matrix, and comprises the following steps:
1. filled metal powder
Filling metal powder into the bottom of the mounting groove and spreading to form a metal powder cushion layer;
2. the heat expansion mounting groove is arranged on the inner wall of the heat expansion mounting groove,
heating the mounting groove to thermally expand the mounting groove;
3. the alloy head is cooled down,
cooling the alloy head to cool the alloy head;
4. pressed-in alloy head
Pressing the alloy head into the mounting groove through a press;
5. the cutting pick stands to room temperature
The steps 2 and 3 can be selected alternatively or both simultaneously;
example two: a method of maintaining a powder shim buffer pick as described in example one,
a. removing the alloy head;
b. taking out the compacted metal powder cushion layer;
c. adding metal powder which is not compacted to the bottom of the mounting groove, and spreading for a certain thickness to form a new metal powder buffer cushion;
d. and installing a new alloy head.
In this embodiment, the metal powder formed by crushing the metal powder cushion layer taken out in the step b is reused in the step c.
The base member of pick after the maintenance can reuse, has prolonged the life of base member, avoids the waste of material, and wherein the powder bed course can be retrieved broken simultaneously, can the secondary use, can reduce the cost of maintenance, avoids the waste of material.
Claims (6)
1. The utility model provides a powder cushion buffering pick, includes base member, alloy head, its characterized in that: the top of the base body is provided with a sunken alloy head mounting groove along the axial direction, and the lower part of the alloy head is inserted into the mounting groove and is mounted in an interference fit manner; the bottom of the mounting groove is filled with a metal powder cushion layer; the metal powder cushion layer is in contact with the bottom of the alloy head.
2. The powder blanket buffering pick of claim 1, wherein: the base member lower part be equipped with the connecting rod, the upper portion of base member is conical bears the pedestal, bears the pedestal lower extreme and is the disk body, the disk body diameter is greater than the diameter of connecting rod, the mounting groove be located bear the top centre of pedestal.
3. The powder blanket buffering pick of claim 1, wherein: the part of the upper part of the alloy head, which exceeds the mounting groove, is a diamond layer.
4. The powder blanket buffering pick of claim 1, wherein: the metal powder buffer layer has a thickness of at least 0.5 mm.
5. A method of maintaining a buffer pick of any one of claims 1 to 4,
a. removing the alloy head;
b. taking out the compacted metal powder cushion layer;
c. adding metal powder which is not compacted to the bottom of the mounting groove, and spreading for a certain thickness to form a new metal powder buffer cushion;
d. and installing a new alloy head.
6. The method of claim 5, wherein the powder cushion buffer pick is: and c, crushing the metal powder cushion layer taken out in the step b to form metal powder, and reusing the metal powder in the step c.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210659689.3A CN115182726A (en) | 2022-06-13 | 2022-06-13 | Powder cushion buffer cutting pick and maintenance method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210659689.3A CN115182726A (en) | 2022-06-13 | 2022-06-13 | Powder cushion buffer cutting pick and maintenance method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115182726A true CN115182726A (en) | 2022-10-14 |
Family
ID=83514264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210659689.3A Pending CN115182726A (en) | 2022-06-13 | 2022-06-13 | Powder cushion buffer cutting pick and maintenance method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN115182726A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251013A (en) * | 2008-03-28 | 2008-08-27 | 湖南飞瑞复合材料有限责任公司 | High abrasion-proof diamond composite cutter bit |
| CN102345253A (en) * | 2011-07-18 | 2012-02-08 | 广州瀚阳工程咨询有限公司 | Railway anti-seismic ballast bed system |
| CN103243665A (en) * | 2013-05-27 | 2013-08-14 | 中铁工程设计咨询集团有限公司 | Protection method and protection device for blocking deep cutting falling rocks |
| CN104005764A (en) * | 2014-05-30 | 2014-08-27 | 无锡正大轴承机械制造有限公司 | Buffered weldless pick-shaped cutter for coal mining machine |
| CN208293381U (en) * | 2018-05-25 | 2018-12-28 | 玉环县辉雄机械有限公司 | A kind of buffer-type milling-planing teeth |
| CN214836334U (en) * | 2021-03-16 | 2021-11-23 | 河南工业职业技术学院 | Cutting pick |
-
2022
- 2022-06-13 CN CN202210659689.3A patent/CN115182726A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251013A (en) * | 2008-03-28 | 2008-08-27 | 湖南飞瑞复合材料有限责任公司 | High abrasion-proof diamond composite cutter bit |
| CN102345253A (en) * | 2011-07-18 | 2012-02-08 | 广州瀚阳工程咨询有限公司 | Railway anti-seismic ballast bed system |
| CN103243665A (en) * | 2013-05-27 | 2013-08-14 | 中铁工程设计咨询集团有限公司 | Protection method and protection device for blocking deep cutting falling rocks |
| CN104005764A (en) * | 2014-05-30 | 2014-08-27 | 无锡正大轴承机械制造有限公司 | Buffered weldless pick-shaped cutter for coal mining machine |
| CN208293381U (en) * | 2018-05-25 | 2018-12-28 | 玉环县辉雄机械有限公司 | A kind of buffer-type milling-planing teeth |
| CN214836334U (en) * | 2021-03-16 | 2021-11-23 | 河南工业职业技术学院 | Cutting pick |
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