CN203678426U - Quartering hammer drill rod and piston matched structure - Google Patents
Quartering hammer drill rod and piston matched structure Download PDFInfo
- Publication number
- CN203678426U CN203678426U CN201420022846.0U CN201420022846U CN203678426U CN 203678426 U CN203678426 U CN 203678426U CN 201420022846 U CN201420022846 U CN 201420022846U CN 203678426 U CN203678426 U CN 203678426U
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- China
- Prior art keywords
- drill rod
- piston
- drill steel
- rear end
- spherical
- 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.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims description 35
- 239000010959 steel Substances 0.000 claims description 35
- 241001149930 Protura <class> Species 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
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- Percussive Tools And Related Accessories (AREA)
Abstract
The utility model discloses a quartering hammer drill rod and piston matched structure. The quartering hammer drill rod and piston matched structure comprises a drill rod which can linearly move and a piston which is arranged above the drill rod, wherein a conical head part is arranged at the front end of the drill rod; a contact surface matched with a striking surface of the front end of the piston is formed in the rear end of the drill rod; the contact surface in the rear end of the drill rod is a spherical bulge which protrudes outwards; a spherical concave cavity matched with the spherical bulge of the drill rod is formed in the striking surface at the front end of the piston. By virtue of adopting the structure, because the contact surface at the rear end of the drill rod is the spherical bulge which protrudes outwards, and the spherical concave cavity matched with the spherical bulge of the drill rod is formed in the striking surface at the front end of the piston, a larger contact surface matched with the striking surface at the front end of the piston is formed in the rear end of the drill rod, and the service life of equipment is prolonged. Moreover, due to the spherical bulge and a spherical groove, a certain guide effect is achieved, even if a drill rod guide sleeve is worn to form a gap, a phenomenon that the striking surfaces cannot be coincided is avoided, and the durable performance is guaranteed.
Description
Technical field
The utility model relates in a kind of engineering machinery with quartering hammer, specifically a kind of crushing hammar drill rod and piston fit structure.
Background technology
In engineering machinery work progress, usually need to use quartering hammer, in use procedure by piston slap drill steel, make the drill steel tip strikes face that is broken, between quartering hammer piston and the drill steel scope of attack, conventionally adopt traditionally planar design, after the wearing and tearing of drill steel guide pin bushing form gap, can make the scope of attack not fit like a glove, cause the scope of attack to damage.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of reasonable in design, uses reliable and long-lived crushing hammar drill rod and piston fit structure.
In order to solve the problems of the technologies described above, crushing hammar drill rod of the present utility model and piston fit structure, comprise the drill steel that can move linearly and the piston that is arranged on drill steel top, the front end of drill steel is provided with conehead part, the rear end of drill steel has the contact-making surface matching with the scope of attack of piston nose, the contact-making surface of drill steel rear end is the spherical surface hill of outwardly convex, and the scope of attack of the front end of piston is set to the sphere cavity cooperatively interacting with the spherical surface hill of drill steel.
The diameter of described drill steel rear end is less than the diameter of drill steel front end.
Described drill steel and piston are respectively arranged with guide pin bushing outward.
Adopt after above-mentioned structure, due to the contact-making surface of the drill steel rear end spherical surface hill that is outwardly convex, the scope of attack of the front end of piston is set to the sphere cavity cooperatively interacting with the spherical surface hill of drill steel, make thus the rear end of drill steel there is the larger contact-making surface matching with the scope of attack of piston nose, improve the service life of equipment, and the spherical surface hill and the spherical groove that arrange, there is certain guide effect, even if can not make the scope of attack not coincide after the wearing and tearing of drill steel guide pin bushing form gap yet, ensure its performance durable in use.
Brief description of the drawings
Fig. 1 is the structural representation to be installed of the utility model crushing hammar drill rod and piston fit structure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, crushing hammar drill rod of the present utility model and piston fit structure are described in further detail.
As shown in the figure, crushing hammar drill rod of the present utility model and piston fit structure, comprise the drill steel 1 that can move linearly and the piston 2 that is arranged on drill steel 1 top, the front end of drill steel 1 is provided with conehead part 3, conehead part 3 forms a sharp structure of cone, can hit thus the face of being broken, the rear end of drill steel 1 has the contact-making surface matching with the scope of attack of piston 2 front ends, the spherical surface hill 4 that the contact-making surface of drill steel 1 rear end is outwardly convex, the scope of attack of the front end of piston 2 is set to the sphere cavity 5 cooperatively interacting with the spherical surface hill 4 of drill steel, drill steel 1 and the outer guide pin bushing 6 that is respectively arranged with of piston 2.
Further can also make the diameter of drill steel 1 rear end be less than the diameter of drill steel 1 front end.
Claims (3)
1. a crushing hammar drill rod and piston fit structure, comprise the drill steel (1) that can move linearly and be arranged on the piston (2) of drill steel (1) top, it is characterized in that: the front end of described drill steel (1) is provided with conehead part (3), the rear end of described drill steel (1) has the contact-making surface matching with the scope of attack of piston (2) front end, the spherical surface hill (4) that the contact-making surface of described drill steel (1) rear end is outwardly convex, the scope of attack of the front end of piston (2) is set to the sphere cavity (5) cooperatively interacting with the spherical surface hill (4) of drill steel.
2. according to crushing hammar drill rod claimed in claim 1 and piston fit structure, it is characterized in that: the diameter of described drill steel (1) rear end is less than the diameter of drill steel (1) front end.
3. according to crushing hammar drill rod claimed in claim 1 and piston fit structure, it is characterized in that: described drill steel (1) and the outer guide pin bushing (6) that is respectively arranged with of piston (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022846.0U CN203678426U (en) | 2014-01-15 | 2014-01-15 | Quartering hammer drill rod and piston matched structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420022846.0U CN203678426U (en) | 2014-01-15 | 2014-01-15 | Quartering hammer drill rod and piston matched structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203678426U true CN203678426U (en) | 2014-07-02 |
Family
ID=51000389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420022846.0U Expired - Fee Related CN203678426U (en) | 2014-01-15 | 2014-01-15 | Quartering hammer drill rod and piston matched structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203678426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107362468A (en) * | 2017-08-30 | 2017-11-21 | 明光浩淼安防科技股份公司 | A kind of Multifunctional crushing hammer |
-
2014
- 2014-01-15 CN CN201420022846.0U patent/CN203678426U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107362468A (en) * | 2017-08-30 | 2017-11-21 | 明光浩淼安防科技股份公司 | A kind of Multifunctional crushing hammer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140702 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |