CN2839231Y - Air over hydraulic jack - Google Patents
Air over hydraulic jack Download PDFInfo
- Publication number
- CN2839231Y CN2839231Y CN 200520117672 CN200520117672U CN2839231Y CN 2839231 Y CN2839231 Y CN 2839231Y CN 200520117672 CN200520117672 CN 200520117672 CN 200520117672 U CN200520117672 U CN 200520117672U CN 2839231 Y CN2839231 Y CN 2839231Y
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- CN
- China
- Prior art keywords
- valve
- check valve
- cylinder
- change
- over
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- 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 kind of air over hydraulic jack, mainly include jack (1), plunger pump (2), piston rod (32), cylinder is established retracing spring in (3), check valve (4) is established in the upper end in the cylinder (3), check valve (5) is set in its lower end, and last check valve, the feeler lever (41) of following check valve, the outer end of (51) are positioned at cylinder (3); Main airway (6) to cylinder (3) input gas is controlled leading to, ending of main airway (6) by change-over valve (8) and by the valve rod (83) of change-over valve (8); Secondary air flue (7) from gas to the upper gas chamber (81) that is positioned at change-over valve valve rod (83) upper end that import is led to, is ended by the control of described upward check valve (4), and secondary air flue (7) from gas to the lower air chamber (82) that is positioned at change-over valve valve rod (83) lower end that import is led to, ended by check valve (5) control under described.The simple air over hydraulic jack of control structure that the utility model is controlled the pressure gas of input cylinder.
Description
Technical field:
The utility model relates to a kind of air over hydraulic jack.
Background technology:
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, structure is trifling, complicated, each several part inaccurate coordination during work.
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 controlled.
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, establish retracing spring in the cylinder, the upper end of cylinder, lower end edge are vertically respectively established a check valve and are promptly gone up check valve, following check valve, and the outer end of the feeler lever of last check valve, following check valve is positioned at cylinder; Main airway to cylinder input gas is controlled leading to, ending of main airway by change-over valve and by the valve rod of change-over valve, secondary air flue to the upper gas chamber input gas that is positioned at change-over valve valve rod upper end is logical by last check valve control, end, and is logical by check valve control down to the secondary air flue of the lower air chamber input gas that is positioned at change-over valve valve rod lower end, end.
Use the utility model air over hydraulic jack, when initial, the valve rod of the check valve on roof pressure under the application force of retracing spring of the piston in the cylinder, last check valve is open-minded, gas enters the upper gas chamber of change-over valve by last check valve from secondary air flue, the valve rod of change-over valve is moved down, main airway is in conducting state, pressure gas enters upper chamber of air cylinder by change-over 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.Simultaneously, the moving down of piston makes the no longer valve rod of control cock on the roof pressure of piston, and last closed check valve, secondary air flue are no longer to the upper gas chamber input gas of change-over valve.When piston moved down into cylinder bottom, piston pressed down the valve rod of check valve from top to bottom, and following check valve is open-minded, gas enters the lower air chamber of change-over valve by following check valve from secondary air flue, make on the valve rod of change-over valve and move, main airway is ended, main airway stops to cylinder input pressure gas.At this moment, the retracing spring in the cylinder resets, and it is up to promote piston and piston rod, simultaneously, the gas of upper chamber of air cylinder is through the main airway inverted running, the lower annular recess on the change-over valve valve rod, discharged by exhausr port, the up drive plunger pump oil suction of piston rod is for next oiling is prepared; When moving on to cylinder top on the piston, the valve rod of piston check valve on roof pressure under the application force of retracing spring, last check valve is open-minded, gas enters the upper gas chamber of change-over valve by last check valve from secondary air flue, the valve rod of change-over valve is moved down, main airway is in conducting state again, and pressure gas enters cylinder by change-over valve, begins another working cycle.The utility model air over hydraulic jack is made up of check valve and change-over valve the control structure that the pressure gas of input cylinder is controlled, and control structure is simple, and check valve and change-over valve are common of total moulding, and each several part harmony is good during work.
Description of drawings:
Fig. 1 is the utility model air over hydraulic jack structural representation.
Fig. 2 is a change-over valve structural representation shown in Figure 1.
Fig. 3 is an one-way valve structures scheme drawing shown in Figure 1.
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, and simultaneously, for reducing resistance, the gas of piston 31 bottoms is discharged from the exhausr port of cylinder lower end in the cylinder 3; Establish retracing spring 33 in the bottom of piston 31, when stopping, under the tension force effect of retracing spring 33, make on piston 31 and the piston rod 32 and move to cylinder 3 gas transmissions.Main airway 6 to cylinder 3 input gases is controlled leading to, ending of main airways by change-over valve 8 and by the valve rod 83 of change-over valve: valve rod 83 moves down, and two communication port A, B of main airway 6 are by upper, annular groove 85 conductings on the change-over valve valve rod; Move on the valve rod 83, upper, annular groove 85 and two communication port A, B dislocation, main airway 5 stops input.As shown in Figure 2, change-over valve 4 is the change-over valve of ordinary construction, comprise valve body, valve rod 83, have upper and lower two circular grooves 85 on the valve rod 83, last circular groove is used for connecting to cylinder 3 air inlets, following circular groove is used to connect the exhaust of cylinder 3, and valve rod 83 upper ends are connected with a valve piston 84, and these valve piston 84 tops are the upper gas chamber 81 of change-over valve; Valve rod 83 lower ends also are connected with a valve piston, the lower air chamber 82 that this valve piston bottom is a change-over valve.Secondary air flue 7 from gases to upper gas chamber 81 that import is led to, is ended by last check valve 4 controls, and secondary air flue 7 from gases to lower air chamber 82 that import is led to, ended by following check valve 5 controls.As shown in Figure 1, last check valve 4 is along the upper end that vertically is located at cylinder 3, following check valve 5 is along the lower end that vertically is located at cylinder 3, and last check valve 4, the outer end of the valve rod of check valve 5 all is positioned at cylinder 3 down so that piston 31 when moving up and down piston 31 can touch check valve 4, descend the valve rod of check valve 5.The valve rod 41,51 of last check valve, following check valve is vertical for the most suitable with piston 31.The structure of last check valve, following check valve is identical, press-type check valve for general structure, above check valve 4 is an example, as shown in Figure 3, structure comprises valve body, valve rod 41, and valve rod 41 other end correspondences are established steel ball 42 and spring 43, control leading to, ending of secondary air flue by the valve rod 41 of check valve, press valve rod 41, valve rod 41 just backs down steel ball 42, two communication port C of the secondary air flue in the check valve, D conducting; Stop to press valve rod 41, steel ball 42 returns under spring 43 tension force effects, steel ball 42 end secondary air flue two communication port C, D.
When initial, the valve rod 41 of piston 31 check valve 4 on roof pressure under the application force of retracing spring 33 in the cylinder 3, as shown in Figure 3, the tension force that overcomes spring 43 backs down steel ball 42,4 two secondary air flue communication port C of last check valve, D is open-minded, gas enters the upper gas chamber 81 of change-over valve 8 by last check valve 4 from secondary air flue 7, the valve rod 83 of change-over valve 8 is moved down, main airway place 6 is in conducting state, the pressure gas of source of the gas 10 is by four-way, arrives the communication port A of change-over valves 8 and entered by the A mouth in the chamber of change-over valve 4 along main airway 6, exports from communication port B, enter the epicoele of cylinder 3 again through main airway 6, overcome the tension force of retracing spring 33, it is descending to promote piston 31 and piston rod 32, (gas in the lower chamber of air cylinder is discharged from exhausr port f), moving down of piston rod 32 makes plunger pump 2 that oil pressure is gone into the bottom of the big plunger of jack 1, with big plunger jack-up.Simultaneously, the moving down of piston 31 makes the no longer valve rod 41 of check valve 4 on the roof pressure of piston 1, and as shown in Figure 3, spring 43 resets steel ball 42, and last check valve two communication port C, D close, and secondary air flue 7 is no longer to the upper gas chamber 81 input gases of change-over valve 8.When piston 31 moves down into cylinder 3 bottoms, piston 31 presses down the valve rod 51 of check valve 5 from top to bottom, following check valve 5 is open-minded, gas enters the lower air chamber 82 of change-over valve 8 by following check valve 5 from secondary air flue 7, make on the valve rod 83 of change-over valve 8 and move, main airway 6 is ended, and main airway 6 stops to cylinder 3 input pressure gass.At this moment, retracing spring 33 resets, and it is up to promote piston 31 and piston rod 32, simultaneously, the gas of cylinder 3 epicoeles is through main airway 6 inverted runnings, the following circular groove on change-over valve valve rod 83, discharged by exhausr port f1, up drive plunger pump 2 oil suctions of piston rod 32 are for next oiling is prepared; When moving on to cylinder 3 tops on the piston 31, the valve rod 41 of piston 31 check valve 4 on roof pressure under the application force of retracing spring 33, last check valve 4 is open-minded, gas enters the upper gas chamber of change-over valve 8 by last check valve 4 from secondary air flue 7, the valve rod 83 of change-over valve 8 is moved down, main airway 6 is in conducting state, and pressure gas enters cylinder 3 by change-over valve 8, begins another working cycle.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 upper end of described cylinder (3), lower end edge are vertically respectively established a check valve and are promptly gone up check valve (4), following check valve (5), and described upward check valve, the feeler lever (41) of following check valve, the outer end of (51) are positioned at cylinder (3); Main airway (6) to cylinder (3) input gas is controlled leading to, ending of main airway (6) by change-over valve (8) and by the valve rod (83) of change-over valve (8); Secondary air flue 7 from gas to the upper gas chamber (81) that is positioned at change-over valve valve rod (83) upper end that import is led to, is ended by the control of described upward check valve (4), and secondary air flue (7) from gas to the lower air chamber (82) that is positioned at change-over valve valve rod (83) lower end that import is led to, ended by check valve (5) control under described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117672 CN2839231Y (en) | 2005-09-06 | 2005-09-06 | Air over hydraulic jack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520117672 CN2839231Y (en) | 2005-09-06 | 2005-09-06 | Air over hydraulic jack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2839231Y true CN2839231Y (en) | 2006-11-22 |
Family
ID=37427216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520117672 Expired - Fee Related CN2839231Y (en) | 2005-09-06 | 2005-09-06 | Air over hydraulic jack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2839231Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108988A (en) * | 2009-12-28 | 2011-06-29 | 何广禧 | Device for automatic operation of oil cylinder |
-
2005
- 2005-09-06 CN CN 200520117672 patent/CN2839231Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108988A (en) * | 2009-12-28 | 2011-06-29 | 何广禧 | Device for automatic operation of oil cylinder |
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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 |