CN2799506Y - Pneumatic hydraulic jack - Google Patents
Pneumatic hydraulic jack Download PDFInfo
- Publication number
- CN2799506Y CN2799506Y CN 200520037117 CN200520037117U CN2799506Y CN 2799506 Y CN2799506 Y CN 2799506Y CN 200520037117 CN200520037117 CN 200520037117 CN 200520037117 U CN200520037117 U CN 200520037117U CN 2799506 Y CN2799506 Y CN 2799506Y
- Authority
- CN
- China
- Prior art keywords
- cylinder
- jack
- plunger pump
- hydraulic jack
- 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
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Abstract
The utility model discloses a pneumatic-hydraulic jack which mainly comprises a jack (1) and a plunger pump (2) which is connected with an oil path of the jack, wherein the plunger pump (2) is connected with a piston rod (32) of a cylinder (3), a reset spring (33) is arranged in the cylinder (3), a gas passage (5) introducing gas to the cylinder passes through a two-bit three-way electromagnetic valve (4) which controls the on-off of the gas passage (5), and the two-bit three-way electromagnetic valve (4) is connected with an automatic on-off switch (J). The pneumatic-hydraulic jack of the utility model carries out electric control to the compressed gas introduced in the cylinder (3). The utility model has the advantages of simple control structure and simple operation.
Description
Technical field:
The utility model relates to a kind of air over hydraulic jack.
Technical background:
Air over hydraulic jack is to utilize pressure gas that the oil pressure of jack is gone into hydraulic actuating cylinder, promotes jack and lifts object.The structure of at present general air over hydraulic jack mainly comprises: an ordinary jack, and with the plunger pump that the jack oil circuit links to each other, plunger pump links to each other with the piston rod of cylinder, and in cylinder, pressure gas moves down piston and piston rod from the input of the top of piston; Establish retracing spring in lower part of piston, when stopping, under the tension force effect of retracing spring, make on piston and the piston rod and move to the cylinder gas transmission.Moving up and down of piston rod makes plunger pump constantly oil pressure be gone into the bottom of the big plunger of jack, with big plunger jack-up, lifts object.For the energy continuous working, need control: import and stop input and will switch in time the pressure gas of input cylinder.But present air over hydraulic jack, the control structure that the pressure gas of input cylinder is controlled is all very complicated, as application number is that 200410008307,2 patent application discloses a kind of air over hydraulic jack, the control structure of its pressure gas just is made up of multi-parts such as switching piston, ball spring, spacing ball, moving valves, complex structure, complicated operation.
The utility model content:
The utility model is to provide a kind of simple air over hydraulic jack of control structure that the pressure gas of input cylinder is carried out electronic control.
The technical solution adopted in the utility model is: the plunger pump that the utility model structure mainly includes jack, links to each other with the jack oil circuit, plunger pump links to each other with the piston rod of cylinder, below piston, establish retracing spring, to the air flue of cylinder input gas by two-position three way magnetic valve and by this solenoid control air flue logical, end, two-position three way magnetic valve is connected with the auto switching switch.
Use the utility model air over hydraulic jack, when needing, connect the power supply of electromagnetic valve, afterwards, by the switching of auto switching switch control electromagnetic valve.When the auto switching switch is in off-position, the gas circuit of two-position three way magnetic valve is in conducting state under the effect of spring, pressure gas enters upper chamber of air cylinder by electromagnetic valve, the tension force that overcomes retracing spring moves down piston and piston rod, moving down of piston rod makes plunger pump that oil pressure is gone into the bottom of the big plunger of jack, with big plunger jack-up.When the auto switching switch switched to "on" position, the electromagnet of electromagnetic valve was had an effect, and made the guiding valve displacement in the electromagnetic valve, and gas circuit is in blocking state, stops to the cylinder gas transmission.At this moment, retracing spring resets, and it is up to promote piston and piston rod, and simultaneously, the gas of upper chamber of air cylinder is discharged by the exhausr port of two-position three way magnetic valve through the air flue inverted running, and the up drive plunger pump oil suction of piston rod is for next oiling is prepared; The auto switching switch switches to off-position again, begins another working cycle.The utility model air over hydraulic jack the pressure gas of importing cylinder is carried out electronic control, and control structure is simple, and is simple to operate.
Description of drawings:
Fig. 1 is the utility model air over hydraulic jack structural representation.
The specific embodiment:
As shown in Figure 1, the utility model air over hydraulic jack keystone configuration comprises: an ordinary jack 1, and the plunger pump 2 that links to each other with the jack oil circuit, plunger pump 2 links to each other with the lower end of the piston rod 32 of cylinder 3.In cylinder 3, pressure gas moves down piston 31 and piston rod 32 from the input of the top of piston 31, establishes retracing spring 33 in the bottom of piston 31, when stopping to cylinder 3 gas transmissions, under the tension force effect of retracing spring 33, makes on piston 31 and the piston rod 32 and moves.Air flue 5 to cylinder 3 input gases is controlled leading to, ending of air flues by two-position three way magnetic valve 4 and by this electromagnetic valve 4.Two-position three way magnetic valve connects 4 auto switching switch J, by the switching of auto switching switch J control electromagnetic valve 4.Auto switching switch J can be common slug relay, every the switching of several seconds automatic switchover institute control circuit.
When needing, connect the power supply K of electromagnetic valve, the current supply circuit of two-position three way magnetic valve 4 is in running order, afterwards by 4 switchings of auto switching switch J control electromagnetic valve.When auto switching switch 4 is in off-position, the gas circuit of two-position three way magnetic valve 4 is in conducting state under the effect of spring, the pressure gas of source of the gas enters cylinder 3 epicoeles along air flue 5 by electromagnetic valve 4, it is descending to promote piston 31 and piston rod 32, while compression reseting spring 33, the oil pressure of being about under the small plunger in the descending promotion plunger pump 2 of piston rod 32 in the plunger pump chamber is gone into the bottom of the big plunger of jack 1, with big plunger jack-up.When auto switching switch J switches to "on" position, the electromagnet of electromagnetic valve 4 is had an effect, make the guiding valve displacement in the electromagnetic valve, gas circuit is in blocking state, stop to cylinder 3 epicoele air feed---retracing spring 33 resets, it is up to promote piston 31 and piston rod 32, simultaneously, the gas of upper chamber of air cylinder is discharged by the exhausr port of two-position three way magnetic valve 4 through air flue 5 inverted runnings, the small plunger of exercising in the plunger pump 2 of going up of piston rod 32 is mentioned, in the oily inspiration plunger pump chamber in jack 1 oil sump, begin a working cycle again.And so forth, the big plunger of jack 1 rises rapidly, the jack-up weight.
Claims (1)
1, a kind of air over hydraulic jack, the plunger pump that mainly include jack, links to each other with the jack oil circuit, plunger pump links to each other with the piston rod of cylinder, establish retracing spring in the cylinder, it is characterized in that: the air flue (5) to cylinder (3) input gas is controlled leading to, ending of air flue (5) by two-position three way magnetic valve (4) and by this electromagnetic valve (4), and two-position three way magnetic valve (4) is connected with auto switching switch (J).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037117 CN2799506Y (en) | 2005-12-10 | 2005-12-10 | Pneumatic hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520037117 CN2799506Y (en) | 2005-12-10 | 2005-12-10 | Pneumatic hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2799506Y true CN2799506Y (en) | 2006-07-26 |
Family
ID=36842001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520037117 Expired - Fee Related CN2799506Y (en) | 2005-12-10 | 2005-12-10 | Pneumatic hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2799506Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790264A (en) * | 2018-08-03 | 2018-11-13 | 嘉兴大道锻造技术咨询有限公司 | Save the stretching-machine of power source |
-
2005
- 2005-12-10 CN CN 200520037117 patent/CN2799506Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108790264A (en) * | 2018-08-03 | 2018-11-13 | 嘉兴大道锻造技术咨询有限公司 | Save the stretching-machine of power source |
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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 |