CN2318443Y - Air spring automatic return hydraulic cylinder - Google Patents
Air spring automatic return hydraulic cylinder Download PDFInfo
- Publication number
- CN2318443Y CN2318443Y CN 97201173 CN97201173U CN2318443Y CN 2318443 Y CN2318443 Y CN 2318443Y CN 97201173 CN97201173 CN 97201173 CN 97201173 U CN97201173 U CN 97201173U CN 2318443 Y CN2318443 Y CN 2318443Y
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- China
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- hydraulic cylinder
- oil hydraulic
- cylinder
- air chamber
- air
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- Expired - Fee Related
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Abstract
The utility model relates to an air spring automatic return hydraulic cylinder which is provided with a multilevel structure with single chamber, a multilevel structure with multiple chambers and a single stage structure with single chamber; the utility model is composed of a cylinder body, a piston rod, an oil inlet mouth, etc; an air compression chamber is arranged in the interior of the final stage piston rod, and the upper end of the air chamber is provided with an air inlet valve, in the utility model, a hydraulic cylinder of the multilevel structure with single chamber, or the multilevel structure with multiple chambers or the single stage structure with single chamber all uses compressed air as return motive power, not only the problem of automatic return of the multilevel cylinders is solved, but also the weight of the oil cylinder is reduced, and the return speed can be changed through regulating air pressure.
Description
The utility model belongs to a kind of hydraulic pressure installation, relates to a kind of air spring from the return oil hydraulic cylinder.
The oil hydraulic cylinder return generally has two kinds: a kind of is to restore return by spring, and another kind is by the reverse hydraulic oil return of injection, and these two kinds of return modes only are applicable to the single-stage oil cylinder.
The purpose of this utility model provides a kind of air spring from the return oil hydraulic cylinder, and this oil hydraulic cylinder can solve the self-return problem of multistage cylinder.
For achieving the above object, the utility model is taked following design proposal: the air spring has multistage single cell structure, multistage multicell structure and single-stage single cell structure from the return oil hydraulic cylinder.They are made of cylinder body, piston rod, oil intake nozzle etc.The inside of described not level piston rod is provided with delivery air chamber, and the air chamber upper end has suction valve.
In the utility model, no matter be the oil hydraulic cylinder of multistage single cell structure, or the oil hydraulic cylinder of multistage multicell structure, or the oil hydraulic cylinder of single-stage single cell structure, all adopt pressurized air to do return power, not only solved multistage cylinder self-return problem, and reduced the weight of oil cylinder, return speed also can change by the pressure of adjusting air.
Fig. 1 is the sectional view of the oil hydraulic cylinder of multistage single cell structure in the utility model
Fig. 2 is the sectional view of the oil hydraulic cylinder of multistage multicell structure in the utility model
Fig. 3 is the sectional view of multistage multicell structured liquid cylinder pressure safety valve in the utility model
Fig. 4 is the sectional view of the oil hydraulic cylinder of single-stage single cell structure in the utility model
Be described as follows below in conjunction with drawings and Examples:
The air spring is made of cylinder body, piston rod, oil intake nozzle etc. from the return oil hydraulic cylinder, can be divided into multistage single cell structure, multistage multicell structure and single-stage single cell structure.
As shown in Figure 1, in the return oil hydraulic cylinder, 1 is oil intake nozzle at the air spring of multistage single cell structure, and 2,3,4 are respectively one, two, three cylinder body, and the internal layer cylinder base is equipped with piston.Be provided with delivery air chamber 6 in the inside of final stage piston rod 5, the air chamber upper end has suction valve 7.Except that outermost surface oil cylinder 2, middle cylinder 3,4 is the two-layer compound cylinder body.The two ends up and down of compound cylinder body and inside and outside inner room form one " Z " shape air vent 8.This air vent 8 is worked hard in glove with the piston upper end mutually with pressing chamber 6.Cylinder cap 9,10,11 all is equipped with on each cylinder body top.For pressurized air is not leaked, all be provided with seal ring 12 on each cylinder cap.
When air entered delivery air chamber 6 by suction valve 7, the upper end of each piston had remained atmospheric pressure.When opening the oil nozzle below the piston, pressurized air discharges along " Z " shape air vent 8, promotes piston and moves down, thereby discharge working oil, makes the piston self-return.
As shown in Figure 2, in the return oil hydraulic cylinder, each grade oil hydraulic cylinder is equipped with independently delivery air chamber 6 at the air spring of multistage multicell structure, and each air chamber top has suction valve 7, and this air chamber is an inside recessed bank on casing wall, forms ring-shaped air chamber.Outwards protrude a bank in the cylinder barrel bottom, form positioning ring 15.Delivery air chamber 16 designs of middle oil cylinder are on cylinder cap 17, and the suction valve 18 on its top is a safety valve.The structure of safety valve 18 in the valve body of this valve, leaves vent 19 as shown in Figure 3, spring 20 and seal rubber pad 21.
When using multistage multicell oil hydraulic cylinder because each oil cylinder is equipped with delivery air chamber, therefore the return of every grade of oil cylinder all on one's own account the delivery air chamber of itself finish, economized the inconvenient problem of composite oil cylinder processing.If hydraulic oil leaks, the safety valve 18 on the middle oil cylinder can prevent that oil cylinder from blasting, thereby safe and reliable.
As shown in Figure 3, in the return oil hydraulic cylinder, 5 is piston rod at the air spring of single-stage single cell structure, and delivery air chamber 6 is located at piston rod inside.In air chamber 6 lower ends one aperture 22 is arranged, aperture 22 is connected with the piston upper end, and compression air chamber 6 tops have a suction valve 7.When compression air chamber 6 was pressed into pressurized air, air chamber and piston top promptly produced atmospheric pressure by suction valve, and when opening the oil nozzle 1 below the piston, piston is self-return under the effect of pressurized air pressure.
Claims (10)
1, a kind of air spring is from the return oil hydraulic cylinder, multistage single cell structure, multistage multicell structure and single-stage single cell structure are arranged, they are made of cylinder body, piston rod, oil intake nozzle etc., it is characterized in that: the described not inside of level piston rod (5) is provided with delivery air chamber (6), and air chamber (6) upper end has suction valve (7).
2, air spring according to claim 1 is characterized in that from the return oil hydraulic cylinder: in the oil hydraulic cylinder of multistage single cell structure, middle oil cylinder (3,4) is the two-layer compound cylinder body, and it is two ends and inside and outside inner room formation one " Z " shape air vent (8) up and down.
3, air spring according to claim 1 is characterized in that from the return oil hydraulic cylinder: in the oil hydraulic cylinder of multistage multicell structure, each grade oil hydraulic cylinder is equipped with a delivery air chamber (6) independently, and each air chamber top all has suction valve (7).
4, air spring according to claim 1 is from the return oil hydraulic cylinder, it is characterized in that: in the oil hydraulic cylinder of single-stage single cell structure, delivery air chamber (6) is located at piston rod inside, and the air chamber lower end has an aperture (22) to be connected with the piston upper end, and air chamber (6) top has a suction valve (7).
5, air spring according to claim 2 is characterized in that from the return oil hydraulic cylinder: in the multistage single chamber oil hydraulic cylinder, delivery air chamber (6) is arranged on the not inside of level piston rod (5).
6, air spring according to claim 2 is characterized in that from the return oil hydraulic cylinder: in the multistage single chamber oil hydraulic cylinder, the piston upper end is interconnected by " Z " shape air vent (8) with delivery air chamber (6).
7, air spring according to claim 2 is characterized in that from the return oil hydraulic cylinder: the oil hydraulic cylinder of multistage single cell structure, and cylinder cap (9,10,11) all is equipped with on the top of cylinder body (2,3,4), and cylinder cap is provided with seal ring (12).
8, air spring according to claim 3 is from the return oil hydraulic cylinder, it is characterized in that: in the oil hydraulic cylinder of multistage multicell structure, air chamber is an inside recessed bank on casing wall, forms ring-shaped air chamber (6), a then outwards outstanding bank forms positioning ring (15) in the cylinder barrel bottom.。
9, air spring according to claim 3 is characterized in that from the return oil hydraulic cylinder: in the oil hydraulic cylinder of multistage multicell structure, the delivery air chamber of middle oil cylinder (16) is located on the cylinder cap (17), and safe suction valve (18) is equipped with on its top.
10, air spring according to claim 4 is characterized in that from the return oil hydraulic cylinder: there is an aperture (22) lower end of the oil hydraulic cylinder air chamber (6) of single-stage single cell structure, and aperture (22) is connected with the piston upper end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201173 CN2318443Y (en) | 1997-02-04 | 1997-02-04 | Air spring automatic return hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97201173 CN2318443Y (en) | 1997-02-04 | 1997-02-04 | Air spring automatic return hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2318443Y true CN2318443Y (en) | 1999-05-12 |
Family
ID=33922651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97201173 Expired - Fee Related CN2318443Y (en) | 1997-02-04 | 1997-02-04 | Air spring automatic return hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2318443Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481964A (en) * | 2014-11-20 | 2015-04-01 | 大连光洋科技集团有限公司 | Pressure-maintaining push-pull cylinder and clamping device using the same |
| CN106762951A (en) * | 2016-12-28 | 2017-05-31 | 王金达 | A kind of compressed air backhaul single-action hydraulic cylinder |
-
1997
- 1997-02-04 CN CN 97201173 patent/CN2318443Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104481964A (en) * | 2014-11-20 | 2015-04-01 | 大连光洋科技集团有限公司 | Pressure-maintaining push-pull cylinder and clamping device using the same |
| CN106762951A (en) * | 2016-12-28 | 2017-05-31 | 王金达 | A kind of compressed air backhaul single-action hydraulic 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 |