CN2069923U - Pick for tunnelling machine and coal cutter - Google Patents
Pick for tunnelling machine and coal cutter Download PDFInfo
- Publication number
- CN2069923U CN2069923U CN 90200639 CN90200639U CN2069923U CN 2069923 U CN2069923 U CN 2069923U CN 90200639 CN90200639 CN 90200639 CN 90200639 U CN90200639 U CN 90200639U CN 2069923 U CN2069923 U CN 2069923U
- Authority
- CN
- China
- Prior art keywords
- pick
- carbide alloy
- utility
- cutting pick
- moulding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Abstract
The utility model relates to a mining machine. In the utility model, forming hard alloy and a cutting pick body are directly assembled together, or the forming hard alloy is fixed on the cutting pick body through screws without weld; the utility model avoids the embrittlement of the hard alloy of the cutting pick and the cracking of the hard alloy of the cutting pick which are caused by the weld, guarantees the quality of the cutting pick, and prolongs service life. In addition, when the forming hard alloy is worn or is damaged, the utility model can be changed, and therefore, the cutting pick can be used for a plurality of times.
Description
The utility model belongs to mining facility, as the pick of development machine and coal-winning machine.
At present, the pick of the coal-winning machine of home and abroad, development machine adopts welded construction; During welding, heating and cooling speed is fast, makes between the table, lining of pick and each one the temperature difference big, produces stress, occurs crackle at last so that damage on pick.In addition, when carbide alloy is heated to high temperature in air, abrupt oxidization will take place, carbide alloy is become fragile, reduced its mechanical performance; In order to solve crackle and the problem that becomes fragile, many now employing HFI welding, but different parts need manufacture and design different inductors, needs to strictly observe standard in the welding process, but individual part still can crack.
The carbide alloy pick cracks and the problem that becomes fragile in order to overcome, and the purpose of this utility model provides a kind of development machine of the mechanical connecting structure that need not weld, the coal-winning machine pick.
Content of the present utility model: be moulding carbide alloy (pick shape) closely to be loaded in the pick body or by sunk screw the moulding carbide alloy is fixed on the pick body.
The magnitude of interference of moulding carbide alloy and pick body opening be the stationary fit of 0.02～0.1mm or gap value 0.01～0.05mm movingly, and it is bonding to inject the high strength heat resistant cementing agent in the gap.Or the moulding carbide alloy cooperated with the cone that the pick body opening makes the self-locking tapering.
Advantage of the present utility model, since the utility model adopt carbide alloy directly cooperate with the pick body opening, bonding or the moulding carbide alloy is fixed on the pick body by sunk screw, without welding, so carbide alloy can not crack and become fragile, improve the quality of pick, prolonged the life-span; Because the moulding carbide alloy can change, the pick body can repeatedly use.
Fig. 1 is cylindrical carbide alloy pick;
Fig. 2 is a step carbide alloy pick;
Fig. 3 cooperates pick for cone;
Fig. 4 is for passing through the fastening pick of screw.
Accompanying drawings the utility model embodiment.
Embodiment 1, Fig. 1 is cylindrical carbide alloy pick, the magnitude of interference of the hole D1 of the diameter of moulding carbide alloy 1 and pick body 2 is 0.05mm or as the gap of 0.05mm, and it is bonding to inject the high strength heat resistant cementing agent, the D2 hole of pick body 2 makes the through hole of diameter 5～10, is used for changing the moulding carbide alloy.The material of pick body adopts steel.
Embodiment 2, and the cone that moulding carbide alloy 1 and pick body 2 is made 1:20 tapering (see figure 3) engages, and in the use, the joint of the two is more and more tighter, can not come off.The taper hole lower end is that through hole is made in the aperture with the taper hole end diameter, is used for changing the moulding carbide alloy.
Embodiment 3(sees Fig. 4), with sunk screw 3 moulding carbide alloy 4 is fixed on the pick body 5, when the moulding carbide alloy damages, pull down screw 3 and can change.
Claims (3)
1, a kind of by moulding carbide alloy and the pick that the pick body structure becomes, it is characterized in that moulding carbide alloy 1 (pick shape) closely is loaded in the pick body 2 or by sunk screw 3 moulding carbide alloy 4 is fixed on the pick body 5.
2, pick as claimed in claim 1, the magnitude of interference of it is characterized in that being shaped carbide alloy 1 and pick body 2 is the stationary fit of 0.02～0.1mm, or the gap be 0.01～0.05mm movingly, and it is bonding to inject the high strength heat resistant cementing agent in the gap.
3, pick as claimed in claim 1 is characterized in that the contour alloy 1 and the hole of pick body 2 are that the cone of self-locking tapering cooperates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200639 CN2069923U (en) | 1990-01-20 | 1990-01-20 | Pick for tunnelling machine and coal cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90200639 CN2069923U (en) | 1990-01-20 | 1990-01-20 | Pick for tunnelling machine and coal cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2069923U true CN2069923U (en) | 1991-01-23 |
Family
ID=4882396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90200639 Withdrawn CN2069923U (en) | 1990-01-20 | 1990-01-20 | Pick for tunnelling machine and coal cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2069923U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093018C (en) * | 1997-10-10 | 2002-10-23 | 佳木斯大学 | Inserted cast cutting tooth of coal cutter |
| CN100343011C (en) * | 2003-12-09 | 2007-10-17 | 泰安市科大金纳等离子科技有限公司 | Technical method for producing pick type cutting bit |
| CN100465411C (en) * | 2004-03-10 | 2009-03-04 | 上海科煤机电有限公司 | Chain pick for coal mine |
| CN101111662B (en) * | 2005-01-27 | 2010-05-19 | Dbt有限公司 | Device for milling rock and method for milling rock or the like using said device |
-
1990
- 1990-01-20 CN CN 90200639 patent/CN2069923U/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1093018C (en) * | 1997-10-10 | 2002-10-23 | 佳木斯大学 | Inserted cast cutting tooth of coal cutter |
| CN100343011C (en) * | 2003-12-09 | 2007-10-17 | 泰安市科大金纳等离子科技有限公司 | Technical method for producing pick type cutting bit |
| CN100465411C (en) * | 2004-03-10 | 2009-03-04 | 上海科煤机电有限公司 | Chain pick for coal mine |
| CN101111662B (en) * | 2005-01-27 | 2010-05-19 | Dbt有限公司 | Device for milling rock and method for milling rock or the like using said device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |