CN2594584Y - Pneumatic device with bidirectional hydraulic buffer - Google Patents
Pneumatic device with bidirectional hydraulic buffer Download PDFInfo
- Publication number
- CN2594584Y CN2594584Y CN 02293155 CN02293155U CN2594584Y CN 2594584 Y CN2594584 Y CN 2594584Y CN 02293155 CN02293155 CN 02293155 CN 02293155 U CN02293155 U CN 02293155U CN 2594584 Y CN2594584 Y CN 2594584Y
- Authority
- CN
- China
- Prior art keywords
- plunger
- cover
- piston
- pipe joint
- piston rod
- 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
Links
Abstract
The utility model provides a pneumatic device of a bidirectional hydraulic buffering type, which is composed of a cylinder, a piston, a piston rod, a front cylinder cover, a back cylinder cover, a front end cover, a back end cover, a front plunger piston, a back plunger piston, a pipe joint, an adjusting valve, etc. The utility model is characterized in that the back cylinder cover, the back end cover and the plunger pistons form a closed oil chamber, and the front cylinder cover, the front end cover, the front plunger piston and the piston rod also form a closed oil chamber. Two oil chambers are connected by the pipe joint and metal pipes, and the adjusting valve is arranged among the metal pipes. The utility model has the advantages that the buffering time can be controlled reliably, and the buffering effect is good.
Description
Affiliated technical field
The utility model relates to a kind of Pneumatic actuator with bidirectional hydraulic damping mechanism, belongs to a kind of valve actuator.
Background technique
The Pneumatic actuator of band damping mechanism is made of cylinder barrel, piston, piston rod, front end housing, back cylinder cover at present, its pooling feature be by piston operation when the terminal, form a closed air chamber between piston and cylinder cap, modulating valve is regulated gas purging speed realization pooling feature in the air chamber.But because gas can compress, the time of buffering is difficult to control, and cushioning effect is poor, the occasion particularly big, that the front and back 2 air chambers equates in inertial load, and cushioning effect is poorer.
Summary of the invention
In order to overcome the very difficult control of buffer time of existing Pneumatic actuator, and the deficiency of cushioning effect difference, the utility model provides a kind of bidirectional hydraulic buffering type Pneumatic actuator, and this bidirectional hydraulic buffering type Pneumatic actuator can not only reliably be controlled buffer time and good buffer effect.
The technological scheme that its technical problem that solves the utility model adopts is: front end housing and back cylinder barrel are equipped with in the two ends of cylinder barrel, piston and piston rod are housed in the cylinder barrel, one end of piston rod connects with piston, the other end extends to outside the cylinder barrel by front end housing and load links, back cylinder cover, rear end cover and back-plunger constitute the back grease chamber of sealing, front end housing, front cover, preceding plunger and piston rod constitute the preceding grease chamber of sealing, front and back link by pipe joint and metal tube between the grease chamber, modulating valve is housed in the middle of the metal tube, when moving to the terminal certain distance backward, piston contacts with back-plunger, promote to move after the back-plunger, because liquid has incompressibility, fluid from the back grease chamber through pipe joint, metal tube, modulating valve enters preceding grease chamber, moves behind the plunger before making.Equally, when moving in the other direction, piston advances forward to terminal certain distance contacts with preceding plunger, plunger advancement before promoting, because liquid has incompressibility, fluid is chamber, grease chamber after pipe joint, metal tube, modulating valve enter, grease chamber in the past, moves behind the plunger before making.Reach the effect of bidirectional buffering.By regulating the aperture of modulating valve, can control the time of buffering.
The beneficial effects of the utility model are to control buffer time reliably, and good buffer effect, and simple in structure, and cost is low.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is embodiment's a sectional structural map
Among the figure: 1. gland nut I; 2. rear end cover; 3. back cylinder cover; 4. back-plunger; 5. cylinder barrel; 6. modulating valve; 7. piston; 8. piston rod; 9.O shape circle; 10. front end housing; 11. preceding plunger; 12. pipe joint; 13. front cover; 14. gland nut II.
Embodiment
As shown in Figure 1, front end housing (10) and back cylinder cover (3) are equipped with in the two ends of cylinder barrel (5), piston (7) and piston rod (8) are housed in the cylinder barrel (5), one end of piston rod (8) connects with piston (7), the other end extends to outside the cylinder barrel (5) by front end housing (10) and load links, rear end cover (3), back cylinder cover () constitutes the back grease chamber that seals with back-plunger, front end housing, front cover, preceding plunger and piston rod constitute the preceding grease chamber of sealing, front and back link by pipe joint and metal tube between the grease chamber, modulating valve is housed in the middle of the metal tube, when moving to the terminal certain distance backward, piston contacts with back-plunger, promote to move after the back-plunger, because liquid has incompressibility, fluid from the grease chamber, back through pipe joint, metal tube, modulating valve enters preceding grease chamber, moves behind the plunger before making.
Claims (1)
1, a kind of bidirectional hydraulic buffering type Pneumatic actuator, constitute by cylinder barrel, piston, piston rod, front end housing, back cylinder cover, front cover, rear end cover, preceding plunger, back-plunger, pipe joint and modulating valve etc., it is characterized in that: back cylinder cover, rear end cover and plunger, front end housing, front cover, preceding plunger and piston rod constitute the grease chamber of sealing separately, link to each other by pipe joint, metal tube between two grease chambeies, modulating valve is housed between metal tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293155 CN2594584Y (en) | 2002-12-29 | 2002-12-29 | Pneumatic device with bidirectional hydraulic buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293155 CN2594584Y (en) | 2002-12-29 | 2002-12-29 | Pneumatic device with bidirectional hydraulic buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2594584Y true CN2594584Y (en) | 2003-12-24 |
Family
ID=33751237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02293155 Expired - Fee Related CN2594584Y (en) | 2002-12-29 | 2002-12-29 | Pneumatic device with bidirectional hydraulic buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2594584Y (en) |
-
2002
- 2002-12-29 CN CN 02293155 patent/CN2594584Y/en not_active Expired - Fee Related
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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 |