CN201841911U - Floating hydraulic mechanism for axle - Google Patents
Floating hydraulic mechanism for axle Download PDFInfo
- Publication number
- CN201841911U CN201841911U CN2010205645626U CN201020564562U CN201841911U CN 201841911 U CN201841911 U CN 201841911U CN 2010205645626 U CN2010205645626 U CN 2010205645626U CN 201020564562 U CN201020564562 U CN 201020564562U CN 201841911 U CN201841911 U CN 201841911U
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- China
- Prior art keywords
- oil cylinder
- oil
- floats
- control valve
- balance cock
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a floating hydraulic mechanism for an axle. A oil-replenishing tube for a left floating oil cylinder (1) and a right floating oil cylinder (3) is connected with a driving oil passage A with certain pressure and a driving oil passage B with certain pressure through a first pilot-operated reversing valve (6), a control oil tube for a left floating oil cylinder balance valve (2) and a right floating oil cylinder balance valve (11) is connected with a second pilot-operated reversing valve (8), and an electromagnetic reversing valve (4) is connected between an oil-replenishing tube for the left floating oil cylinder balance valve (2) and the right floating oil cylinder balance valve (11) and the control end of the second pilot-operated reversing valve (8). Since the oil replenished to the left floating oil cylinder (1) and the right floating oil cylinder (3) is fed by the oil passages with certain pressure, the floating mechanism can effectively prevent the floating oil cylinders from being vacuumized due to the insufficiency of the pressure of the replenished oil. When a car is stopped, the left floating oil cylinder balance valve (2) controls the oil to release pressure via the second pilot-operated reversing valve (8), and thereby the floating oil cylinder balance valves can more reliably lock the floating oil cylinders.
Description
Technical field
The utility model relates to the unsteady hydraulic efficiency gear of a kind of vehicle bridge, particularly relates to the unsteady hydraulic efficiency gear of a kind of self-propelled aerial working platform vehicle bridge.
Background technology
For solving the phenomenon that causes drive wheel to skid because of Uneven road in the driving process, existing self-travel type high-altitude operation platform generally adopts the unsteady hydraulic efficiency gear of vehicle bridge to solve this problem.Referring to Fig. 1 and Fig. 2, when high-altitude operation platform was walked, claimed apparatus floated reliable, guaranteed the vehicle frame left and right horizontal.And when high-altitude operation platform stops, requiring the vehicle bridge hydraulic efficiency gear that floats to guarantee reliably that the chassis is firm again.
The main deficiency of prior art: as shown in Figure 3, vehicle ' is floated oil cylinder in course of action, and the repairing of two unsteady oil cylinder balance cocks is obtained from oil return branch road (T mouth), because hypotony can cause the repairing deficiency.When floating oil cylinder work, the pressure of complete vehicle weight can make an one oil cylinder piston bar withdrawal (and extruding its in-to-in fluid), and another oil cylinder piston bar then stretches out (and covering fluid).Because the oil liquid pressure that covers is low, flow is little, can't satisfy the needs that cover fluid when the oil cylinder that floats stretches out fast, so can produce the vacuum of certain volume during the inner repairing of oil cylinder.And vehicle stops, and balance cock control oil does not have pressure release, can not make the oil cylinder that floats about the balance cock pinning, thus the potential safety hazard of bringing.
The utility model content
Thereby providing a kind of balance cock that floats that makes, technical problem to be solved in the utility model can effectively pin the unsteady hydraulic efficiency gear of vehicle bridge that the oil cylinder that floats improves the aerial platform job security.
In order to solve the problems of the technologies described above, the vehicle bridge that the utility model the provides hydraulic efficiency gear that floats, comprise the unsteady oil cylinder in a left side, the oil cylinder balance cock floats on a left side, the right oil cylinder that floats, the right oil cylinder balance cock that floats, solenoid directional control valve, first pilot operated directional control valve, drive oil circuit A and drive oil circuit B, the additional fluid pipe of the unsteady oil cylinder of the unsteady oil cylinder in a described left side and the described right side is connected with driving oil circuit B with the described driving oil circuit A with certain pressure by described first pilot operated directional control valve, a described left side the float control oil pipe of oil cylinder balance cock of oil cylinder balance cock and the described right side that floats is connected with second pilot operated directional control valve, and described solenoid directional control valve is connected in float oil cylinder balance cock and the described right side, a described left side and floats between the control end of the additional fluid pipe of oil cylinder balance cock and described second pilot operated directional control valve.
The drainage end of described second pilot operated directional control valve is connected in described driving oil circuit A by shuttle valve and drives on the oil circuit B.
Adopt the unsteady hydraulic efficiency gear of vehicle bridge of technique scheme, the additional fluid of unsteady oil cylinder in a left side and the right oil cylinder that floats is inserted by driving oil circuit A with certain pressure and driving oil circuit B, makes floating installation effectively prevent to cause the oil cylinder vacuum of floating because of the oil compensation pressure deficiency.Oil cylinder balance cock control oil float during parking through the second pilot operated directional control valve pressure release, improve the reliability that the oil cylinder balance cock that floats pins the oil cylinder that floats.
Compared with prior art, advantage of the present utility model is:
The fluid that replenishes for the unsteady oil cylinder of the unsteady oil cylinder in a left side and the right side is inserted by the oil circuit with certain pressure, prevent to cause the oil cylinder vacuum of floating because of the oil compensation pressure deficiency, oil cylinder balance cock control oil float during parking through pilot operated directional control valve one pressure release, avoid unsteady oil cylinder balance cock to can't lock the phenomenon of the oil cylinder that floats.
In sum, the utility model is that a kind of balance cock that floats that makes can effectively pin unsteady oil cylinder, can improve second pilot operated directional control valve (8) of aerial platform operational security, dependable performance.
Description of drawings
Fig. 1 chassis travels on level road;
The work of Fig. 2 floating installation, the chassis keeps left and right horizontal.
Fig. 3 has vehicle bridge floating installation hydraulic schematic diagram now.
Vehicle bridge floating installation hydraulic schematic diagram after Fig. 4 improves.
The specific embodiment
Below with reference to accompanying drawing the utility model is described in further details.
Referring to Fig. 3, in existing hydraulic efficiency pressure system, when A or B fuel feeding are vehicle ', electromagnetic valve 4 electric, from the pressure oil opening installation of A or B in about the balance cock of oil cylinder that floats, realize floating thereby two unsteady oil cylinders are communicated with.In unsteady oil cylinder location free procedure, the oil liquid pressure that covers is low excessively, flow is too small, can not satisfy when covering the needs of fluid when the oil cylinder that floats stretches out fast the inner vacuum that can produce certain volume of oil cylinder.When A or B stop control lever are vehicle when stopping, electromagnetic valve 4 dead electricity, and balance cock control oil does not have pressure release, oil cylinder floats about balance cock is pinned.Thereby the potential safety hazard of bringing.
Referring to Fig. 4, left side CD-ROM drive motor 10 and right CD-ROM drive motor 9 are connected with and drive oil circuit A and drive oil circuit B, drive oil circuit A and drive between the oil circuit B and be connected with first pilot operated directional control valve 6, the unsteady oil cylinder 1 in a left side is connected with the unsteady oil cylinder balance cock 2 in a left side, the right oil cylinder 3 that floats is connected with the right oil cylinder balance cock 11 that floats, the additional fluid pipe of unsteady oil cylinder 1 in a left side and the right oil cylinder 3 that floats is connected with driving oil circuit B with the driving oil circuit A with certain pressure by first pilot operated directional control valve 6, first pilot operated directional control valve 6 causes the unsteady oil cylinder 1 in a left side and the right additional fluid pipe that floats oil cylinder 3 is provided with by pass valve 5, unsteady oil cylinder balance cock 2 in a left side and the right control oil pipe that floats oil cylinder balance cock 11 are connected with second pilot operated directional control valve 8, the drainage end of second pilot operated directional control valve 8 is connected in by shuttle valve 7 and drives oil circuit A and drive on the oil circuit B, and solenoid directional control valve 4 is connected in a left side and floats between the control end of the additional fluid pipe of oil cylinder balance cock 2 and the right oil cylinder balance cock 11 that floats and second pilot operated directional control valve 8.
Referring to Fig. 4, when driving oil circuit A or drive oil circuit B fuel feeding when being vehicle ', solenoid directional control valve 4, the unsteady oil cylinder balance cock 2 in a left side of pressure oil opening installation unsteady oil cylinder 1 of next self-driven oil circuit A or driving oil circuit B and the unsteady oil cylinder balance cock 11 in the right side of the unsteady oil cylinder 3 in the right side in a left side, thus make the left oil cylinder 1 that floats realize unsteady with unsteady oil cylinder 3 connections in the right side.In oil cylinder 1 and right oil cylinder 3 location free procedures of floating are floated in a left side, the fluid that covers has certain pressure, can satisfy a left side and float when covering the needs of fluid when the unsteady oil cylinder 3 of the oil cylinder 1 and the right side stretches out fast, can not float oil cylinder 1 and the right oil cylinder 3 inside formation vacuum of floating on a left side.When driving oil circuit A or driving oil circuit B stop control lever is that vehicle is when stopping, solenoid directional control valve 4 dead electricity, the control oil of unsteady oil cylinder balance cock 2 in a left side and the right oil cylinder balance cock 11 that floats is through 8 pressure releases of second pilot operated directional control valve, and unsteady oil cylinder balance cock 2 in a left side and the right oil cylinder balance cock 11 that floats pin unsteady oil cylinder 1 in a left side and the right oil cylinder 3 that floats effectively respectively.
As from the foregoing, after adopting the utility model, the repairing of two unsteady oil cylinder balance cocks is from the driving oil circuit A with certain pressure and drives oil circuit B access, and the control oil of unsteady oil cylinder balance cock 2 in a left side and the right oil cylinder balance cock 11 that floats is through 8 pressure releases of second pilot operated directional control valve when stopping, make floating installation reliably effective, thereby improved the safety of aerial platform operation.
Claims (2)
1. the vehicle bridge hydraulic efficiency gear that floats, comprise the unsteady oil cylinder (1) in a left side, oil cylinder balance cock (2) floats on a left side, the right oil cylinder (3) that floats, the right oil cylinder balance cock (11) that floats, solenoid directional control valve (4), first pilot operated directional control valve (6), drive oil circuit A and drive oil circuit B, it is characterized in that: a described left side the float additional fluid pipe of oil cylinder (3) of oil cylinder (1) and the described right side that floats is connected with driving oil circuit B with the described driving oil circuit A with certain pressure by described first pilot operated directional control valve (6), a described left side the float control oil pipe of oil cylinder balance cock (11) of oil cylinder balance cock (2) and the described right side that floats is connected with second pilot operated directional control valve (8), and described solenoid directional control valve (4) is connected in a described left side and floats between the control end of the additional fluid pipe of the unsteady oil cylinder balance cock (11) of the oil cylinder balance cock (2) and the described right side and described second pilot operated directional control valve (8).
2. the vehicle bridge according to claim 1 hydraulic efficiency gear that floats is characterized in that: the drainage end of described second pilot operated directional control valve (8) is connected in described driving oil circuit A by shuttle valve (7) and drives on the oil circuit B.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205645626U CN201841911U (en) | 2010-10-15 | 2010-10-15 | Floating hydraulic mechanism for axle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205645626U CN201841911U (en) | 2010-10-15 | 2010-10-15 | Floating hydraulic mechanism for axle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201841911U true CN201841911U (en) | 2011-05-25 |
Family
ID=44036815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205645626U Expired - Fee Related CN201841911U (en) | 2010-10-15 | 2010-10-15 | Floating hydraulic mechanism for axle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201841911U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358850A (en) * | 2013-06-20 | 2013-10-23 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and engineering vehicle |
| CN104129248A (en) * | 2014-08-11 | 2014-11-05 | 连云港天明装备有限公司 | Hydraulic damping device for explosion-proof vehicle |
| CN104691270A (en) * | 2015-01-20 | 2015-06-10 | 徐州重型机械有限公司 | Axle balance control system of self-walking type aerial working vehicle |
| CN106321538A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Anti-tipping device, hydraulic system, aerial work platform equipment and rotation center body |
| CN106494179A (en) * | 2016-11-23 | 2017-03-15 | 徐工消防安全装备有限公司 | Automatically controlled vehicle bridge balance system and apply the self-propelled aerial work platform of the system |
| CN109203860A (en) * | 2018-11-15 | 2019-01-15 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
| CN112196851A (en) * | 2020-10-31 | 2021-01-08 | 龙合智能装备制造有限公司 | Wheel-side driving hydraulic system with load response |
| WO2022193769A1 (en) * | 2021-03-19 | 2022-09-22 | 湖南星邦智能装备股份有限公司 | Double-acting floating oil cylinder control loop |
-
2010
- 2010-10-15 CN CN2010205645626U patent/CN201841911U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103358850A (en) * | 2013-06-20 | 2013-10-23 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and engineering vehicle |
| CN103358850B (en) * | 2013-06-20 | 2015-10-28 | 三一汽车起重机械有限公司 | Hydro-pneumatic suspension system and engineering truck |
| CN104129248A (en) * | 2014-08-11 | 2014-11-05 | 连云港天明装备有限公司 | Hydraulic damping device for explosion-proof vehicle |
| CN104129248B (en) * | 2014-08-11 | 2016-07-06 | 连云港天明装备有限公司 | Explosion-proof vehicle hydraulic damping device |
| CN104691270A (en) * | 2015-01-20 | 2015-06-10 | 徐州重型机械有限公司 | Axle balance control system of self-walking type aerial working vehicle |
| CN106321538A (en) * | 2015-06-16 | 2017-01-11 | 徐工集团工程机械股份有限公司 | Anti-tipping device, hydraulic system, aerial work platform equipment and rotation center body |
| CN106494179A (en) * | 2016-11-23 | 2017-03-15 | 徐工消防安全装备有限公司 | Automatically controlled vehicle bridge balance system and apply the self-propelled aerial work platform of the system |
| CN106494179B (en) * | 2016-11-23 | 2019-05-14 | 徐工消防安全装备有限公司 | The self-propelled aerial work platform of automatically controlled vehicle bridge balance system and the application system |
| CN109203860A (en) * | 2018-11-15 | 2019-01-15 | 徐工消防安全装备有限公司 | Vehicle bridge balancing device and aerial work platform |
| CN112196851A (en) * | 2020-10-31 | 2021-01-08 | 龙合智能装备制造有限公司 | Wheel-side driving hydraulic system with load response |
| WO2022193769A1 (en) * | 2021-03-19 | 2022-09-22 | 湖南星邦智能装备股份有限公司 | Double-acting floating oil cylinder control loop |
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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: 20110525 Termination date: 20151015 |
|
| EXPY | Termination of patent right or utility model |