CN103466498B - With the Pneumahydraulic jack of unloaded fast servo function - Google Patents
With the Pneumahydraulic jack of unloaded fast servo function Download PDFInfo
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- CN103466498B CN103466498B CN201310457507.5A CN201310457507A CN103466498B CN 103466498 B CN103466498 B CN 103466498B CN 201310457507 A CN201310457507 A CN 201310457507A CN 103466498 B CN103466498 B CN 103466498B
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- fuel tank
- cylinder
- pressure relief
- pneumatic booster
- jacking cylinder
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Abstract
The invention discloses a kind of Pneumahydraulic jack with unloaded fast servo function, comprise jacking cylinder, fuel tank, rebound and Pneumatic booster, described fuel tank is connected with jacking cylinder by the oil feeding line on rebound, and by the Pneumatic booster be connected on oil feeding line, hydraulic oil is pumped into jacking cylinder, described oil feeding line connects the release oil circuit that is back to fuel tank, described release oil circuit be provided with can only along fuel tank to jacking cylinder direction the unidirectional decompressin check valve opened, described Pneumatic booster comprises cylinder barrel and is slidedly arranged on the pneumaticpiston in cylinder barrel, cylinder barrel interior separation is rodless cavity and rod chamber by described pneumaticpiston, described rodless cavity is connected with induction opening, described rod chamber is connected with pressure relief vent, described rod chamber is also connected with air extractor vent, described air extractor vent is connected with fuel tank by tracheae.The present invention has that structure is simple, with low cost, work efficiency advantages of higher.
Description
Technical field
The present invention relates generally to hydraulic jack field, refers in particular to a kind of Pneumahydraulic jack with unloaded fast servo function.
Background technology
Pneumahydraulic jack generally comprises jacking cylinder, fuel tank, rebound and Pneumatic booster, and fuel tank is connected with jacking cylinder by the oil feeding line on rebound, and by the Pneumatic booster be connected on oil feeding line, hydraulic oil is pumped into jacking cylinder.
During Pneumahydraulic jack work, the first unloaded segment distance that rises, after pushing up automobile, then load is risen.Existing Pneumahydraulic jack, consistent in the rise ascending velocity in two stages of zero load rising, load, time unloaded, ascending velocity also slowly, loses time and the energy, inefficiency.
In addition, each producer is in order to improve the work efficiency of jack, that is often designed by the induction opening of Pneumatic booster is very large, to accelerate the motion frequency of Pneumatic booster, attempt to improve pump speed oil with this, but in fact effect and not obvious, cause compressed-air actuated a large amount of waste on the contrary, finally cause the waste of the energy.
Summary of the invention
The technical problem to be solved in the present invention is: the deficiency existed for prior art, provides the Pneumahydraulic jack of the unloaded fast servo function of band that a kind of structure is simple, with low cost, work efficiency is high.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of Pneumahydraulic jack with unloaded fast servo function, comprise jacking cylinder, fuel tank, rebound and Pneumatic booster, described fuel tank is connected with jacking cylinder by the oil feeding line on rebound, and by the Pneumatic booster be connected on oil feeding line, hydraulic oil is pumped into jacking cylinder, described oil feeding line connects the release oil circuit that is back to fuel tank, described release oil circuit be provided with can only along fuel tank to jacking cylinder direction the unidirectional decompressin check valve opened, described Pneumatic booster comprises cylinder barrel and is slidedly arranged on the pneumaticpiston in cylinder barrel, cylinder barrel interior separation is rodless cavity and rod chamber by described pneumaticpiston, described rodless cavity is connected with induction opening, described rod chamber is connected with pressure relief vent, described rod chamber is also connected with air extractor vent, described air extractor vent is connected with fuel tank by tracheae.
Further improvement as technique scheme:
The diameter of described induction opening is 1.2mm ~ 2.5mm.
Described cylinder barrel comprises cylinder block and is connected to the end cap at cylinder block two ends, and described air extractor vent is located on end cap or cylinder body.
Described pressure relief vent place is provided with noise silencer.
Described Pneumatic booster also comprises the plunger sleeve being connected to cylinder barrel one end and the plunger be slidedly arranged in plunger sleeve, and described oil feeding line is provided with the air pump interface be connected with plunger sleeve.
Described decompressin check valve comprises the valve channel be located on release oil circuit, described valve channel comprises mounting hole and is positioned at the pressure relief vent of mounting hole near fuel tank one end, the diameter of described pressure relief vent is less than the diameter of mounting hole, Compress Spring and steel ball is equiped with in described mounting hole, described steel ball is between Compress Spring and pressure relief vent, and described steel ball is sealed and matched by the thrust of Compress Spring and the bottom opening of pressure relief vent.
Compared with prior art, the invention has the advantages that:
The Pneumahydraulic jack of the unloaded fast servo function of band of the present invention, because the rod chamber of Pneumatic booster is connected with air extractor vent, during Pneumatic booster work, a part of pressurized air after release by pressure relief vent discharged to ambient atmosphere, part pressurized air enters fuel tank by air extractor vent through tracheae, makes the hydraulic oil supercharging in fuel tank; When jack zero load is risen, oil pressure in jacking cylinder is lower than oil pressure in fuel tank, hydraulic oil in fuel tank both can pump into jacking cylinder through oil feeding line under the effect of Pneumatic booster, also in fuel tank, decompressin check valve under oil pressure effect, can be backed down and enter jacking cylinder through release oil circuit, make jack increase fast; When jack load rises, the oil pressure in jacking cylinder is higher than oil pressure in fuel tank, and the hydraulic oil in fuel tank can not back down decompressin check valve, and under the effect of Pneumatic booster, can only pump into jacking cylinder through oil feeding line, now jack rises at a slow speed; So Pneumahydraulic jack of the present invention both can realize fast servo when zero load, to increase work efficiency, jacking at a slow speed can be realized when load again, to improve safety performance.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention.
Fig. 2 is the sectional structure schematic diagram of rebound in the present invention.
Fig. 3 is the sectional structure schematic diagram of Pneumatic booster in the present invention.
Fig. 4 is the sectional structure schematic diagram of the another kind of state of Pneumatic booster in the present invention.
Marginal data:
1, jacking cylinder; 2, vehicle frame; 3, wheel; 4, control lever; 5, rebound; 6, Pneumatic booster; 52, oil feeding line; 521, oil inlet interface; 522, air pump interface; 53, release oil circuit; 54, decompressin check valve; 541, valve channel; 542, mounting hole; 543, pressure relief vent; 544, Compress Spring; 545, steel ball; 551, release push rod; 552, release piston; 553, piston hole; 554, piston cap; 555, blowhole; 556, back lash spring; 58, the first check valve; 59, the second check valve; 61, cylinder barrel; 611, cylinder body; 612, end cap; 613, rodless cavity; 614, rod chamber; 615, induction opening; 616, pressure relief vent; 617, air extractor vent; 62, pneumaticpiston; 63, plunger sleeve; 64, plunger; 65, noise silencer; 66, retracing spring.
Detailed description of the invention
Below in conjunction with specific embodiments and the drawings, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, the Pneumahydraulic jack of the unloaded fast servo function of band of the present embodiment, comprises vehicle frame 2 and is installed on fuel tank (not shown), jacking cylinder 1, Pneumatic booster 6, wheel 3, control lever 4 and the rebound 5 on vehicle frame 2.Control lever 4 is mainly used in promoting jack walking for people, and control lever 4 is provided with for controlling jack start and stop, the switch of lifting and handle.Fuel tank is connected with jacking cylinder 1 by the oil feeding line 52 on rebound 5, and by the Pneumatic booster 6 be connected on oil feeding line 52, hydraulic oil is pumped into jacking cylinder 1.Oil feeding line 52 is provided with the first check valve 58, second check valve 59, for connecting the oil inlet interface 521 of fuel tank and the air pump interface 522 for connecting Pneumatic booster 6.Oil feeding line 52 connects the release oil circuit 53 that is back to fuel tank, release oil circuit 53 be provided with can only along fuel tank to jacking cylinder 1 direction the unidirectional decompressin check valve 54 opened.When Pneumatic booster 6 works, the hydraulic oil in fuel tank enters jacking cylinder 1 through the first check valve 58 and the second check valve 59 successively, and jack rises; Jack rise a segment distance static time, decompressin check valve 54 and the second check valve 59 are jointly to jacking cylinder 1 sealing pressure maintaining effect; During release, decompressin check valve 54 is opened, and the hydraulic oil in jacking cylinder 1 flows back to fuel tank through decompressin check valve 54, and jack declines.
As shown in Figure 3, Pneumatic booster 6 plunger 64 that comprises cylinder barrel 61, pneumaticpiston 62, plunger sleeve 63 and be slidedly arranged in plunger sleeve 63.Plunger 64 is connected on pneumaticpiston 62, and plunger sleeve 63 is connected to one end of cylinder barrel 61, and oil feeding line 52 is provided with the air pump interface 522 be connected with plunger sleeve 63.Pneumaticpiston 62 to be slidedly arranged in cylinder barrel 61 and to be rodless cavity 613 and rod chamber 614 by cylinder barrel 61 interior separation, the chamber wall of rodless cavity 613 is provided with induction opening 615, the chamber wall of rod chamber 614 is provided with pressure relief vent 616 and air extractor vent 617, and air extractor vent 617 is connected with fuel tank by tracheae (not shown).
As shown in Figure 3, Figure 4, when Pneumatic booster 6 works, pressurized air enters rodless cavity 613 by induction opening 615, promote pneumaticpiston 62 to move to rod chamber 614, after moving to certain position, the pressurized air in rodless cavity 613 is to rod chamber 614 release, and pneumaticpiston 62 moves to rodless cavity 613 under the effect of retracing spring 66, thus make pneumaticpiston 62 crank motion in cylinder barrel 61, drive plunger 64 crank motion to carry out pump oil.In the reciprocatory movement of pneumaticpiston 62, pressurized air in rodless cavity 613 is after rod chamber 614 release, enter in rod chamber 614 pressurized air a part by pressure relief vent 616 discharged in ambient atmosphere, a part enters fuel tank by air extractor vent 617 through tracheae, makes the hydraulic oil supercharging in fuel tank.When jack zero load is risen, oil pressure in jacking cylinder 1 is lower than oil pressure in fuel tank, hydraulic oil in fuel tank both can pump into jacking cylinder 1 through oil feeding line 52 under the effect of Pneumatic booster 6, also in fuel tank, decompressin check valve 54 under oil pressure effect, can be backed down and enter jacking cylinder 1 through release oil circuit 53, make jack increase fast; When jack load rises, the oil pressure in jacking cylinder 1 is higher than oil pressure in fuel tank, and the hydraulic oil in fuel tank can not back down decompressin check valve 54, and under the effect of Pneumatic booster 6, can only pump into jacking cylinder 1 through oil feeding line 52, now jack rises at a slow speed; So Pneumahydraulic jack of the present invention both can realize fast servo when zero load, to increase work efficiency, jacking at a slow speed can be realized when load again, to improve safety performance.
Under jack load condition, during pump oil each due to oil feeding line 52 Pneumatic booster 6, hydraulic oil enters jacking cylinder 1 from fuel tank through oil feeding line 52 all needs regular hour t.Therefore, only need ensure that the reciprocating time gap of plunger 64 of Pneumatic booster 6 is less than or equal to t, just can reach the fastest pump speed oil.So, the diameter of induction opening 615 is set to 1.2mm ~ 2.5mm, the motion frequency of Pneumatic booster 6 can be made roughly to mate with the fastest pump oil frequency, under the prerequisite ensureing pump speed oil, reduce compressed-air actuated consumption most possibly, economize energy, in the present embodiment, the diameter of induction opening 615 is 1.8mm.
In the present embodiment, cylinder barrel 61 comprises cylinder block 611 and is connected to the end cap 612 at cylinder block 611 two ends, and air extractor vent 617 is located on cylinder body 611, in other embodiments, also air extractor vent 617 can be located at end cap 612.
In the present embodiment, pressure relief vent 616 place is provided with noise silencer 65, can reduce pressurized air discharged to noise during ambient atmosphere.
In the present embodiment, decompressin check valve 54 comprises the valve channel 541 be located on release oil circuit 53, valve channel 541 comprises mounting hole 542 and is positioned at the pressure relief vent 543 of mounting hole 542 near fuel tank one end, the diameter of pressure relief vent 543 is less than the diameter of mounting hole 542, Compress Spring 544 and steel ball 545 is equiped with in mounting hole 542, steel ball 545 is between Compress Spring 544 and pressure relief vent 543, and steel ball 545 is sealed and matched by the thrust of Compress Spring 544 and the bottom opening of pressure relief vent 543.
When jack zero load is risen, the hydraulic oil in fuel tank can back down the steel ball 545 of decompressin check valve 54 in fuel tank under oil pressure effect, enter jacking cylinder 1 through release oil circuit 53; When jack load rises, because in jacking cylinder 1, oil pressure is greater than oil pressure in fuel tank, under the oil pressure effect in jacking cylinder 1, steel ball 545 is pressed on pressure relief vent 543 place all the time and pressure relief vent 543 bottom opening is sealed and matched, and plays sealing pressure maintaining effect.
Rebound 5 is also provided with the release control assembly opened and closed for controlling decompressin check valve 54, release control assembly comprises for through the release push rod 551 of pressure relief vent 543 pushing tow steel ball 545, the release piston 552 that is connected with release push rod 551.Release push rod 551 is arranged with the back lash spring 556 for driving release push rod 551 return, release piston 552 is slidedly arranged in the piston hole 553 that rebound 5 is offered, piston hole 553 is closed by piston cap 554, and piston cap 554 is provided with for passing into compressed-air actuated blowhole 555 in piston hole 553.Jack is when load condition release, by passing into pressurized air to blowhole 555, release piston 552 just promotes release push rod 551 and is pushed up from pressure relief vent 543 downwards by steel ball 545 under pressurized air effect, decompressin check valve 54 is opened, hydraulic oil in jacking cylinder 1 is just back to fuel tank through release oil circuit 53, and jack is declined.After stopping leading to pressurized air to blowhole 555, release push rod 551 gets back to initial position under the restoring force effect of back lash spring 556, and decompressin check valve 54 is closed again.
Although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention.Any those of ordinary skill in the art, when not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible variations and modification to technical solution of the present invention, or being revised as the Equivalent embodiments of equivalent variations.Therefore, every content not departing from technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments, equivalent variations and modification, all should drop in the scope of technical solution of the present invention protection.
Claims (6)
1. the Pneumahydraulic jack with unloaded fast servo function, comprise jacking cylinder (1), fuel tank, rebound (5) and Pneumatic booster (6), described fuel tank is connected with jacking cylinder (1) by the oil feeding line (52) on rebound (5), and by the Pneumatic booster (6) be connected on oil feeding line (52), hydraulic oil is pumped into jacking cylinder (1), described oil feeding line (52) connects the release oil circuit (53) that is back to fuel tank, described release oil circuit (53) be provided with can only along fuel tank to jacking cylinder (1) direction the unidirectional decompressin check valve (54) opened, described Pneumatic booster (6) comprises cylinder barrel (61) and is slidedly arranged on the pneumaticpiston (62) in cylinder barrel (61), cylinder barrel (61) interior separation is rodless cavity (613) and rod chamber (614) by described pneumaticpiston (62), described rodless cavity (613) is connected with induction opening (615), described rod chamber (614) is connected with pressure relief vent (616), it is characterized in that: described rod chamber (614) is also connected with air extractor vent (617), described air extractor vent (617) is connected with fuel tank by tracheae.
2. the Pneumahydraulic jack of the unloaded fast servo function of band according to claim 1, is characterized in that: the diameter of described induction opening (615) is 1.2mm ~ 2.5mm.
3. the Pneumahydraulic jack of the unloaded fast servo function of band according to claim 1 and 2, it is characterized in that: described cylinder barrel (61) comprises cylinder block (611) and is connected to the end cap (612) at cylinder block (611) two ends, and described air extractor vent (617) is located on end cap (612) or cylinder body (611).
4. the Pneumahydraulic jack of the unloaded fast servo function of band according to claim 1 and 2, is characterized in that: described pressure relief vent (616) place is provided with noise silencer (65).
5. the Pneumahydraulic jack of the unloaded fast servo function of band according to claim 1 and 2, it is characterized in that: described Pneumatic booster (6) also comprises the plunger sleeve (63) being connected to cylinder barrel (61) one end and the plunger (64) be slidedly arranged in plunger sleeve (63), and described oil feeding line (52) is provided with the air pump interface (522) be connected with plunger sleeve (63).
6. the Pneumahydraulic jack of the unloaded fast servo function of band according to claim 1 and 2, it is characterized in that: described decompressin check valve (54) comprises the valve channel (541) be located on release oil circuit (53), described valve channel (541) comprises mounting hole (542) and is positioned at the pressure relief vent (543) of mounting hole (542) near fuel tank one end, the diameter of described pressure relief vent (543) is less than the diameter of mounting hole (542), Compress Spring (544) and steel ball (545) is equiped with in described mounting hole (542), described steel ball (545) is positioned between Compress Spring (544) and pressure relief vent (543), described steel ball (545) is sealed and matched by the thrust of Compress Spring (544) and the bottom opening of pressure relief vent (543).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457507.5A CN103466498B (en) | 2013-09-30 | 2013-09-30 | With the Pneumahydraulic jack of unloaded fast servo function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310457507.5A CN103466498B (en) | 2013-09-30 | 2013-09-30 | With the Pneumahydraulic jack of unloaded fast servo function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103466498A CN103466498A (en) | 2013-12-25 |
| CN103466498B true CN103466498B (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310457507.5A Expired - Fee Related CN103466498B (en) | 2013-09-30 | 2013-09-30 | With the Pneumahydraulic jack of unloaded fast servo function |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1955635A (en) * | 1930-11-06 | 1934-04-17 | Pascal M Kelly | Pneumatic jack |
| US4798125A (en) * | 1987-11-03 | 1989-01-17 | Chang Fung M | Pneumatic type of hydraulic structure |
| CN2328645Y (en) * | 1998-01-16 | 1999-07-14 | 洪茂雄 | Shuttle valve of pneumatic cylinder for oil pressure jack |
| CN1245138A (en) * | 1998-08-13 | 2000-02-23 | 洪茂雄 | Dual-speed hydraulic lifting mechanism for jack |
| CN2415015Y (en) * | 2000-03-16 | 2001-01-17 | 上海腾马风动工具有限公司 | Pneumatic hydraulic jack |
| CN102659054A (en) * | 2012-05-25 | 2012-09-12 | 衡阳市锦泰工具有限公司 | Coupler-hard-sealed pneumatic booster for hydraulic jack |
| CN203497997U (en) * | 2013-09-30 | 2014-03-26 | 衡阳市锦泰工具有限公司 | Pneumatic hydraulic jack with no-load fast jacking function |
-
2013
- 2013-09-30 CN CN201310457507.5A patent/CN103466498B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1955635A (en) * | 1930-11-06 | 1934-04-17 | Pascal M Kelly | Pneumatic jack |
| US4798125A (en) * | 1987-11-03 | 1989-01-17 | Chang Fung M | Pneumatic type of hydraulic structure |
| CN2328645Y (en) * | 1998-01-16 | 1999-07-14 | 洪茂雄 | Shuttle valve of pneumatic cylinder for oil pressure jack |
| CN1245138A (en) * | 1998-08-13 | 2000-02-23 | 洪茂雄 | Dual-speed hydraulic lifting mechanism for jack |
| CN2415015Y (en) * | 2000-03-16 | 2001-01-17 | 上海腾马风动工具有限公司 | Pneumatic hydraulic jack |
| CN102659054A (en) * | 2012-05-25 | 2012-09-12 | 衡阳市锦泰工具有限公司 | Coupler-hard-sealed pneumatic booster for hydraulic jack |
| CN203497997U (en) * | 2013-09-30 | 2014-03-26 | 衡阳市锦泰工具有限公司 | Pneumatic hydraulic jack with no-load fast jacking function |
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| CN103466498A (en) | 2013-12-25 |
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