CN201129327Y - Proportional servo hydraulic valve - Google Patents
Proportional servo hydraulic valve Download PDFInfo
- Publication number
- CN201129327Y CN201129327Y CNU2007200462699U CN200720046269U CN201129327Y CN 201129327 Y CN201129327 Y CN 201129327Y CN U2007200462699 U CNU2007200462699 U CN U2007200462699U CN 200720046269 U CN200720046269 U CN 200720046269U CN 201129327 Y CN201129327 Y CN 201129327Y
- Authority
- CN
- China
- Prior art keywords
- valve body
- air cavity
- plunger
- valve
- proportional servo
- 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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- Earth Drilling (AREA)
Abstract
The utility model discloses a proportional servo hydraulic valve which comprises a valve body. The rear end of the valve body is connected with an air cavity cover, a plunger piston is arranged in the valve body, a front hydraulic oil chamber and a rear hydraulic oil chamber are arranged between the plunger piston and the valve body, and the front hydraulic oil chamber and the rear hydraulic oil chamber are respectively communicated with a front oil passage and a rear oil passage, the front oil passage and the rear oil passage are connected with a hydraulic oil reversing valve, the rear section of the plunger piston extends in an air cavity, and the front end of the valve body is connected with a casing for placing a drill rod. The proportional servo hydraulic valve is reasonable in structure, and employs double actions of hydraulic pressure and bursting force of gas to realize that the plunger piston impacts the drill rod, thereby achieving the effect of engineering crushing.
Description
Technical field:
The utility model relates to the hydrovalve that a kind of engineering breaker is used.
Background technique:
Existing engineering breaker generally adopts Electric actuator, complex structure, and service behaviour is undesirable.
Summary of the invention:
It is a kind of rational in infrastructure that the purpose of this utility model is to provide, the proportional servo hydrovalve of good working effect.
Technical solution of the present utility model is:
A kind of proportional servo hydrovalve, comprise valve body, it is characterized in that: valve rear end connects the air cavity lid, plunger is set in the valve body, be forward and backward hydraulic fluid chamber between plunger and the valve body, forward and backward hydraulic fluid chamber communicates with forward and backward oil duct respectively, and forward and backward oil duct is connected with the hydraulic oil selector valve, the back segment of plunger stretches in the air cavity, and the valve body front end is connected with the housing of placing drill steel.
Air cavity covers the air valve that communicates with air cavity is set.Separate by the seal ring that is provided with between plunger back segment and the valve body between back hydraulic fluid chamber and the air cavity; Separate by the seal ring that is provided with between plunger leading portion and the valve body between the housing inner chamber of preceding hydraulic fluid chamber and placement drill steel.
The utility model is rational in infrastructure, utilizes the double action of hydraulic coupling and gas explosive force, realizes that plunger impacts drill steel, reaches the effect of engineering fragmentation.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples.
Accompanying drawing is an embodiment's of the utility model a configuration diagram.
Embodiment:
A kind of proportional servo hydrovalve, comprise valve body 1, valve body 1 rear end connects air cavity lid 2, plunger 3 is set in the valve body 1, be forward and backward hydraulic fluid chamber between plunger 3 and the valve body 1, forward and backward hydraulic fluid chamber communicates with forward and backward oil duct 4,5 respectively, and forward and backward oil duct is connected with conventional commercially available hydraulic oil selector valve 6, the back segment of plunger 3 stretches in the air cavity 7, and the valve body front end is connected with the housing 10 of placing drill steel 9.Air cavity covers the air valve 11 that communicates with air cavity is set.Separate by the seal ring 8 that is provided with between plunger back segment and the valve body between back hydraulic fluid chamber and the air cavity, separate by the seal ring 12 that is provided with between plunger leading portion and the valve body between the housing inner chamber of preceding hydraulic fluid chamber and placement drill steel.
During the utility model work, hydraulic oil enters hydraulic fluid chamber from front oil duct 4, promoting plunger moves backward, plunger back-end is pressed in the air cavity, when being pressed onto to a certain degree, and the gas blast in the air cavity, hydraulic oil selector valve 6 commutation work simultaneously, hydraulic oil enters the back hydraulic fluid chamber from back oil duct 5, and plunger travels forward under gas blast power and the dual thrust of hydraulic oil, and then promotes drill steel work.
Claims (3)
1, a kind of proportional servo hydrovalve, comprise valve body, it is characterized in that: valve rear end connects the air cavity lid, plunger is set in the valve body, be forward and backward hydraulic fluid chamber between plunger and the valve body, forward and backward hydraulic fluid chamber communicates with forward and backward oil duct respectively, and forward and backward oil duct is connected with the hydraulic oil selector valve, the back segment of plunger stretches in the air cavity, and the valve body front end is connected with the housing of placing drill steel.
2, proportional servo hydrovalve according to claim 1 is characterized in that: air cavity covers the air valve that communicates with air cavity is set.
3, proportional servo hydrovalve according to claim 1 is characterized in that: separate by the seal ring that is provided with between plunger back segment and the valve body between back hydraulic fluid chamber and the air cavity; Separate by the seal ring that is provided with between plunger leading portion and the valve body between the housing inner chamber of preceding hydraulic fluid chamber and placement drill steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200462699U CN201129327Y (en) | 2007-10-08 | 2007-10-08 | Proportional servo hydraulic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200462699U CN201129327Y (en) | 2007-10-08 | 2007-10-08 | Proportional servo hydraulic valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201129327Y true CN201129327Y (en) | 2008-10-08 |
Family
ID=40017169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200462699U Expired - Fee Related CN201129327Y (en) | 2007-10-08 | 2007-10-08 | Proportional servo hydraulic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201129327Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319596A (en) * | 2011-09-20 | 2012-01-18 | 合肥科振实业发展有限公司 | Fluid-fuel combined breaking hammer |
-
2007
- 2007-10-08 CN CNU2007200462699U patent/CN201129327Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102319596A (en) * | 2011-09-20 | 2012-01-18 | 合肥科振实业发展有限公司 | Fluid-fuel combined breaking 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: 20081008 Termination date: 20151008 |
|
| EXPY | Termination of patent right or utility model |