CN202468535U - Air path control mechanism for air cylinder to automatically enter amd retract - Google Patents
Air path control mechanism for air cylinder to automatically enter amd retract Download PDFInfo
- Publication number
- CN202468535U CN202468535U CN2012200440370U CN201220044037U CN202468535U CN 202468535 U CN202468535 U CN 202468535U CN 2012200440370 U CN2012200440370 U CN 2012200440370U CN 201220044037 U CN201220044037 U CN 201220044037U CN 202468535 U CN202468535 U CN 202468535U
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- valve
- air inlet
- air
- cylinder
- piston
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Abstract
The utility model discloses an air path control mechanism for an air cylinder to automatically enter amd retract, which comprises an air inlet pipe and a pneumatic valve, wherein the pneumatic valve is respectively provided with an air inlet, an upper air inlet, a lower air inlet, a first air outlet and a second air outlet, the front end of the air inlet pipe is respectively connected with pipelines which lead to the air inlet, the upper air inlet and the lower air inlet, and a voltage regulating valve is arranged in the pipeline which leads to the lower air inlet. A valve core is arranged in a valve cavity of the pneumatic valve, both sides of the valve core are respectively connected with an upper valve rod and a lower valve rod which extend to the upper air inlet and the lower air inlet, an upper piston and a lower piston are respectively arranged on the ends of the upper valve rod and the lower valve rod, the upper piston and the lower piston are respectively in sliding fit with the inner wall of the valve cavity of the pneumatic valve, and the diameter of the lower piston is two times or a plurality of times the diameter of the upper piston. The air path control mechanism has the advantages of reasonable structure. In case of a sudden situation, i.e. the pressure of outside inlet air is gradually reduced, a piston rod of the air cylinder, which is pushed out, can still be normally retracted, and the safety of a device which is driven by the air cylinder is guaranteed.
Description
Technical field
The utility model relates to a kind of cylinder gas circuit control mechanism of advancing and retreat automatically.
Background technique
The effect of cylinder is can convert compressed-air actuated pressure into mechanical energy, and driving mechanism is done straight reciprocating motion or swing.When cylinder moves, running into the special circumstances of power failure; Pressurized air in gas storage is irritated can slowly be released under the situation of replenish air there not being outer voltage supply to contract; At this moment the outside suction pressure of cylinder can slowly diminish until dropping to 0, and cylinder can not receive effective control and return to initial position and cause being in unsafe position by the device of air cylinder driven.
The model utility content
The purpose of the utility model provides a kind of cylinder gas circuit control mechanism of advancing and retreat automatically; Run into emergency case; Promptly at system cut-off; The pressure of external feed stream (being the air pressure in the gas holder) when reducing gradually, still can make the cylinder piston rod of having released automatically return, and ensures to be returned to safe position by the device of air cylinder driven.
The technological scheme of the utility model is following:
A kind of cylinder gas circuit control mechanism of advancing and retreat automatically; Include suction tude and pneumatic valve; Be respectively equipped with suction port, upper and lower suction port and first and second air outlet on the described pneumatic valve; It is characterized in that: the front end of said suction tude is connected with the pipeline that leads to suction port and upper and lower suction port respectively, wherein with in the pipeline that following suction port links to each other pressure regulator valve is installed; In the valve pocket of said pneumatic valve spool is arranged; The both sides of said spool are connected with the upper and lower valve rod of suction port extension up and down respectively; Said upper and lower valve rod end has upper and lower piston respectively, and described upper and lower piston is slidingly matched with the inwall of pneumatic valve valve pocket respectively, and the diameter of lower piston is two times or several times of upper piston diameter; Wherein first air outlet is communicated with the rodless cavity of cylinder, and second air outlet is communicated with the rod chamber of cylinder.
The cylinder gas circuit control mechanism of advancing and retreat automatically is characterized in that: the rear end of said suction tude is through the external source of the gas of pipeline.
The cylinder gas circuit control mechanism of advancing and retreat automatically is characterized in that: described first and second air outlet is respectively through the external cylinder of pipeline.
The beneficial effect of the utility model:
The utility model is rational in infrastructure; Pressure through the pneumatic valve both sides is different, realizes the upper and lower motion of spool, thus realize suction port respectively with being communicated with of first and second air outlet; Running into emergency case; Promptly when the pressure of system cut-off and external feed stream reduces gradually, still can make the cylinder piston rod of having released normally return, ensure the safety of cylinder institute drive unit.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the structural representation of the utility model pneumatic valve.
Embodiment
Referring to Fig. 1,2; A kind of cylinder gas circuit control mechanism of advancing and retreat automatically; Include suction tude 1 and pneumatic valve 2; Be respectively equipped with suction port 3, upper and lower suction port 4,5 and first and second air outlet 6,7 on the pneumatic valve 2, the front end of suction tude 1 is connected with the pipeline 8 that leads to suction port 3 and upper and lower suction port 4,5 respectively, wherein with in the pipeline that following suction port 5 links to each other pressure regulator valve 9 is installed; Spool 10 is arranged in the valve pocket of pneumatic valve 2; The both sides of spool 10 are connected with the upper and lower valve rod 11,12 of suction port 4,5 extensions up and down respectively; Upper and lower valve rod 11,12 ends have upper and lower piston 13,14 respectively; Upper and lower piston 13,14 is slidingly matched with the inwall of pneumatic valve 2 valve pockets respectively, and the diameter of lower piston 14 is two times of upper piston 13 diameters.
The rear end of suction tude 1 is through the external source of the gas of pipeline; Through the external cylinder of pipeline, wherein first air outlet 6 is communicated with the rodless cavity of cylinder respectively in first and second air outlet 6,7, and second air outlet 7 is communicated with the rod chamber of cylinder.
Below in conjunction with specific embodiment the utility model is further described:
The suction pressure of setting suction tude 1 under the normal condition is 0.3Mpa, and pressure regulator valve 9 setting pressures are 0.05Mpa, and the diameter of upper piston 13 is 8mm, and the diameter of lower piston 14 is 16mm.At this moment pressure=the 0.3*10 of the last suction port 4 of pneumatic valve 2
6* π (4*10
-3)
2=1.5Kg, the pressure=0.05*10 of 2 times suction ports 5 of pneumatic valve
6* π (8*10
-3)
2=1.0Kg,
At this moment the pressure that receives of pneumatic valve 2 upper ends is greater than the lower end, and spool 10 moves down, and makes suction port 3 be communicated with first air outlet 6, and first air outlet 6 feeds gas to the rodless cavity of cylinder, promotes cylinder piston and advances.
When emergency case occurring, have a power failure as occurring, at this moment suction tude 1 outside suction pressure can slowly diminish; When the air pressure in the suction tude 1 was lower than 0.2MPa, the pressure of suction port 4 was less than the pressure of following suction port 5 on the pneumatic valve 2, and spool 10 moves up; Make suction port 3 be communicated with second air outlet 7; Second air outlet 7 feeds gas to the rod chamber of cylinder, and the promotion cylinder is retreated, thereby has ensured the safety of cylinder institute drive unit.
Claims (3)
1. cylinder gas circuit control mechanism of advancing and retreat automatically; Include suction tude and pneumatic valve; Be respectively equipped with suction port, upper and lower suction port and first and second air outlet on the described pneumatic valve; It is characterized in that: the front end of said suction tude is connected with the pipeline that leads to suction port and upper and lower suction port respectively, wherein with in the pipeline that following suction port links to each other pressure regulator valve is installed; In the valve pocket of said pneumatic valve spool is arranged; The both sides of said spool are connected with the upper and lower valve rod of suction port extension up and down respectively; Said upper and lower valve rod end has upper and lower piston respectively; Described upper and lower piston is slidingly matched with the inwall of pneumatic valve valve pocket respectively, and the diameter of lower piston is two times or several times of upper piston diameter.
2. the cylinder according to claim 1 gas circuit control mechanism of advancing and retreat automatically is characterized in that: the rear end of said suction tude is through the external source of the gas of pipeline.
3. the cylinder according to claim 1 gas circuit control mechanism of advancing and retreat automatically; It is characterized in that: described first and second air outlet is respectively through the external cylinder of pipeline; Wherein first air outlet is communicated with the rodless cavity of cylinder, and second air outlet is communicated with the rod chamber of cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200440370U CN202468535U (en) | 2012-02-11 | 2012-02-11 | Air path control mechanism for air cylinder to automatically enter amd retract |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200440370U CN202468535U (en) | 2012-02-11 | 2012-02-11 | Air path control mechanism for air cylinder to automatically enter amd retract |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202468535U true CN202468535U (en) | 2012-10-03 |
Family
ID=46916695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200440370U Expired - Fee Related CN202468535U (en) | 2012-02-11 | 2012-02-11 | Air path control mechanism for air cylinder to automatically enter amd retract |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202468535U (en) |
-
2012
- 2012-02-11 CN CN2012200440370U patent/CN202468535U/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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20150211 |
|
| EXPY | Termination of patent right or utility model |