CN2378160Y - Non-valve fluid-pressure percussive tool - Google Patents
Non-valve fluid-pressure percussive tool Download PDFInfo
- Publication number
- CN2378160Y CN2378160Y CN 99202340 CN99202340U CN2378160Y CN 2378160 Y CN2378160 Y CN 2378160Y CN 99202340 CN99202340 CN 99202340 CN 99202340 U CN99202340 U CN 99202340U CN 2378160 Y CN2378160 Y CN 2378160Y
- Authority
- CN
- China
- Prior art keywords
- piston
- offset
- leather cup
- cavity
- stepping down
- 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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Abstract
The utility model relates to a non-valve fluid-pressure impactor, which is composed of a piston, a valve body, an offset leather bowl. A cavity body of the offset leather bowl is divided into two cavity bodies by a flexible isolated element on the middle part of the cavity body of the offset leather bowl. In the reciprocating process of the piston, the two cavity bodies of the offset leather bowl can alternately work; the function of temporarily storing excess hydraulic oil can be obtained to prevent from generating a 'pocketed oil' phenomenon in the moving process of the piston, and running resistance of the piston can be increased. The utility model has the characteristics of small size, simple structure, large output power, high efficiency, etc. The non-valve fluid-pressure impactor can be used as an impact element on an impact type machine.
Description
The utility model relates to a kind of impact components of impact type machinery, particularly a kind of hydraulic impactor.
At present, the hydraulic impactor used of countries in the world is divided into two kinds of valve hydraulic impactor and valveless hydraulic impactors.Valve hydraulic impactor complex structure is arranged, the cost height, and also efficient is low.U.S. Ingersoll-rand company (Engsoland Co.) had once developed two kinds of valveless hydraulic impactors, but because of it has adopted " liquid spring " structure, bulky, particularly during its piston impact, " liquid spring " does negative work to piston, and it is little to make it power output, influenced it and promoted the use of.
The purpose of this utility model provides that a kind of volume is little, simple in structure, reliable operation, the little valveless hydraulic impactor of stroke damping.
In order to achieve the above object, the utility model valveless hydraulic impactor is made up of piston, valve body, the leather cup of stepping down etc., it is characterized in that: piston is in the process of moving back and forth, the leather cup of stepping down plays the effect of the unnecessary hydraulic oil of temporary transient storage, produces " pocketed oil " phenomenon and its running resistance that increases to prevent piston when moving.
Below in conjunction with accompanying drawing operation principle of the present utility model is further described.
Fig. 1 is a structure diagram of the present utility model.
By shown in Figure 1, two cavitys about the cavity of the leather cup of stepping down (5) quilt flexible isolating element (12) in the middle is separated into.When stroke began, piston (2) was positioned at the left end of valve body (1), and high-pressure and hydraulic oil enters the left side of piston (2) by fuel feed hole (3), oilhole (4) and oilhole (8), and the flexible isolating element (12) at leather cup (5) the cavity middle part of will stepping down is pushed right-hand member to.Along with the increase of oil inlet quantity, the pressure of system also rises thereupon, promotes piston (2) and quickens to the right to move.When piston (2) move to right spill port (6) blocked after, the hydraulic oil that is trapped in piston (2) right side enters the right cavity of the leather cup of stepping down (5) by oilhole (7), promote flexible isolating element (12) and move to left, the left cavity of the leather cup (5) of stepping down this moment communicates with oil sump (10) by oilhole (8) and spill port (9).Therefore in the process that piston (2) quickens to the right to move, piston (2) right side does not have high-pressure and hydraulic oil, thereby damping is little, and the energy that piston (2) section of will speed up obtains passes to and impacted part (as rock drill bit), thereby obtains bigger output work.
Piston (2) moves to the right side limit point, finishes when impacting acting, and fuel feed hole (3) is opened again, and is full of hydraulic oil by will the step down right cavity of leather cup (5) of oilhole (11), is moved to the left by oilhole (7) promotion piston (2).At piston (2) oilhole (11) is blocked in the process, piston (2) continues to move to left according to inertia, and with spill port (6) and oilhole (7) UNICOM.The hydraulic oil in piston this moment (2) left side enters the left cavity of the leather cup of stepping down (5) by oilhole (8), the right cavity of leather cup (5) communicates with oil sump (10) owing to step down, so piston (2) is in the process of moving to left, the left side of piston (2) does not have high-pressure and hydraulic oil, so piston (2) backhaul damping is little.
Piston (2) moves to left to extreme position, high-pressure and hydraulic oil enters the left side of piston (2) again by fuel feed hole (3), oilhole (4), oilhole (8), piston (2) beginning is quickened to the right to move next time, so goes round and begins again, and finishes and can change hydraulic pressure into ballistic work.
Valveless impactor provided by the utility model has replaced huge " liquid spring " chamber with a very little leather cup of stepping down, and it is little, simple in structure to have a volume, and characteristics such as big and efficient height of output work can be as impact types such as rock drilling impact components mechanically.
Claims (3)
1, a kind of valveless hydraulic impactor, it is made up of piston (2), the leather cup of stepping down (5) and valve body (1), it is characterized in that: the cavity of the leather cup of stepping down (5) is separated into two cavitys by flexible isolating element (12) in the middle, in piston (2) moving process, two cavitys all play the effect of the unnecessary hydraulic oil of temporary transient storage.
2, valveless hydraulic impactor according to claim 1 is characterized in that: the leather cup of stepping down (5) is integrated in one with valve body (1).
3, valveless hydraulic impactor according to claim 1 is characterized in that: the leather cup of stepping down (5) is an independent component, links together by will step down leather cup (5) and valve body (1) of hydraulic tube piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202340 CN2378160Y (en) | 1999-01-23 | 1999-01-23 | Non-valve fluid-pressure percussive tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99202340 CN2378160Y (en) | 1999-01-23 | 1999-01-23 | Non-valve fluid-pressure percussive tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2378160Y true CN2378160Y (en) | 2000-05-17 |
Family
ID=33997819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99202340 Expired - Fee Related CN2378160Y (en) | 1999-01-23 | 1999-01-23 | Non-valve fluid-pressure percussive tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2378160Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459094A (en) * | 2011-04-05 | 2013-12-18 | 阿特拉斯·科普柯凿岩设备有限公司 | Device and method for rock and concrete machining |
-
1999
- 1999-01-23 CN CN 99202340 patent/CN2378160Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103459094A (en) * | 2011-04-05 | 2013-12-18 | 阿特拉斯·科普柯凿岩设备有限公司 | Device and method for rock and concrete machining |
| CN103459094B (en) * | 2011-04-05 | 2015-11-25 | 阿特拉斯·科普柯凿岩设备有限公司 | Hydraulic pressure valveless beater mechanism, relief valve, rock drill, rock drilling machine and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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 |