CN103277364A - Locking oil cylinder pressure reducing valve - Google Patents
Locking oil cylinder pressure reducing valve Download PDFInfo
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- CN103277364A CN103277364A CN201310202192XA CN201310202192A CN103277364A CN 103277364 A CN103277364 A CN 103277364A CN 201310202192X A CN201310202192X A CN 201310202192XA CN 201310202192 A CN201310202192 A CN 201310202192A CN 103277364 A CN103277364 A CN 103277364A
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- pressure reducing
- reducing valve
- reduction valve
- valve
- communicated
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- Forklifts And Lifting Vehicles (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention discloses a locking oil cylinder pressure reducing valve which comprises a two-position three-way solenoid valve, a hydraulic pump, a pressure reducing valve body, an oil box, balancing valves, a swaying bridge and locking oil cylinders. An oil way from an outlet of the two-position three-way solenoid valve to an inlet of the pressure reducing valve body is respectively communicated with conversion control openings of the two balancing valves. An outlet of the pressure reducing valve body is respectively communicated with inlets of the two balancing valves. Outlets of the two balancing valves are respectively communicated with inlets of the two locking oil cylinders. The pressure reducing valve body has an overflow function. The locking oil cylinder pressure reducing valve is simple in structure, reliable in performance, convenient to operate and high in performance-cost ratio, and is a floating and locking device of the aerial work platform swaying bridge.
Description
Technical field
The present invention relates to that a kind of aerial work platform swing axle floats, locking device, swing axle was in quick condition eliminating compression shock when this device can make aerial work platform move, and the aerial work platform swing axle that stops to travel when carrying out work is in the lock state and is beneficial to stable operation.
Background technique
In order to improve smoothness (riding comfort) and the control stability that aerial work platform moves, common practice is now, and propons adopts swing axle to add the pattern of hydraulic pressure hanging oil cylinder, and back axle adopts the rigid bridge that directly connects with vehicle frame.Will solve following technical problem like this, and require swing axle to be in quick condition eliminating compression shock when aerial work platform moves, aerial work platform stops to travel and requires swing axle to be in the lock state when carrying out work to be beneficial to stable operation.
Summary of the invention
The objective of the invention is according to the unsteady lock state of aerial work platform swing axle, provide a kind of oil circuit of the entrance that is exported to described reduction valve of two-position three way magnetic valve to be communicated with the transposition control mouth of two equilibrium valves respectively, the outlet of reduction valve is communicated with the entrance of two equilibrium valves respectively, the outlet of two equilibrium valves is communicated with the entrance of two locked cylinders respectively, simple in structure, a kind of locking cylinder reduction valve easy to manufacture, easy to install.
Technical solution of the present invention is such: a kind of locking cylinder reduction valve, comprise two-position three way magnetic valve, oil hydraulic pump, reduction valve, fuel tank, equilibrium valve, swing axle, locked cylinder, the outlet that it is characterized in that reduction valve is communicated with the entrance of two-position three way magnetic valve, the outlet that is exported to reduction valve of two-position three way magnetic valve is communicated with the entrance of two equilibrium valves respectively, the transposition control mouthful connection of two equilibrium valves, the outlet of reduction valve is communicated with the entrance of two equilibrium valves respectively, the outlet of two equilibrium valves is communicated with the entrance of two locked cylinders respectively, two-position three way magnetic valve and reduction valve let out the He mouth, flow-off is communicated with fuel tank, and two locked cylinder symmetries hang on the swing axle.
Reduction valve is the overflow reduction valve.
The present invention's outstanding effect compared with prior art is: when two-position three way magnetic valve was switched on, swing axle was in quick condition to eliminate compression shock when the intercommunication of two swing axle locked cylinders was moved aerial work platform; When the two-position three way magnetic valve dead electricity, two swing axle locked cylinders are in steady state by abundant locking when carrying out work to guarantee that aerial work platform stops to travel.Simple in structure, reliable performance, easy to operate, the cost performance height can effectively be realized floating, locking of aerial work platform swing axle.
Description of drawings
Formation of the present invention is:
Fig. 1 is overall structure installation procedure of the present invention and operating path schematic representation.
Reference character, two-position three way magnetic valve (1), motor (2), oil hydraulic pump (3), reduction valve (4), fuel tank (5), equilibrium valve (6), swing axle (7), locked cylinder (8).
Embodiment
Below in conjunction with accompanying drawing the present invention is further described, oil hydraulic pump (3) is in transmission connection with motor (2), the outlet of oil hydraulic pump (3) is communicated with the entrance of two-position three way magnetic valve (1), the oil circuit of the entrance that is exported to reduction valve (4) of two-position three way magnetic valve (1) is communicated with the transposition control mouth of two equilibrium valves (6) respectively, the outlet of reduction valve (4) is communicated with the entrance of two equilibrium valves (6) respectively, the outlet of two equilibrium valves (6) is communicated with the entrance of two locked cylinders (8) respectively, the drain charge mouth of two-position three way magnetic valve and reduction valve, flow-off is communicated with fuel tank (5) together, two locked cylinders (6) symmetry hangs on the swing axle (7), and reduction valve (4) is the reduction valve with relief function.Two equilibrium valves (6) are opened by hydraulic pilot oil when two-position three way magnetic valve (1) is switched on, two locked cylinders (8) intercommunication swing axle when guaranteeing that aerial work platform moves is in quick condition, locked cylinder can carry out topping up as required by reduction valve (4), because the compression shock that Uneven road produces can be eliminated by the reduction valve with relief function.Two equilibrium valves cut out because guide's oil pressure disappears when the two-position three way magnetic valve dead electricity, and two locked cylinders are in steady state by abundant locking when carrying out work to guarantee that aerial work platform stops to travel.
Claims (2)
1. locking cylinder reduction valve, comprise two-position three way magnetic valve, motor, oil hydraulic pump, reduction valve, fuel tank, equilibrium valve, swing axle, locked cylinder, the outlet that it is characterized in that reduction valve (3) is communicated with the entrance of two-position three way magnetic valve (1), the outlet that is exported to reduction valve (4) of two-position three way magnetic valve (1) is communicated with the entrance of two equilibrium valves (6) respectively, the transposition control mouthful connection of two equilibrium valves (6), the outlet of reduction valve (4) is communicated with the entrance of two equilibrium valves (6) respectively, the outlet of two equilibrium valves (6) is communicated with the entrance of two locked cylinders (8) respectively, two-position three way magnetic valve (1) and reduction valve (4) let out the He mouth, flow-off is communicated with fuel tank (5), and two locked cylinders (8) symmetry hangs on the swing axle (7).
2. according to the described a kind of locking cylinder reduction valve of claim 1, it is characterized in that reduction valve (4) is the overflow reduction valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310202192XA CN103277364A (en) | 2013-05-27 | 2013-05-27 | Locking oil cylinder pressure reducing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310202192XA CN103277364A (en) | 2013-05-27 | 2013-05-27 | Locking oil cylinder pressure reducing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103277364A true CN103277364A (en) | 2013-09-04 |
Family
ID=49059963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310202192XA Pending CN103277364A (en) | 2013-05-27 | 2013-05-27 | Locking oil cylinder pressure reducing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103277364A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110285100A (en) * | 2019-06-28 | 2019-09-27 | 三一重机有限公司 | Damping hydraulic system and engineering machinery |
| CN110285100B (en) * | 2019-06-28 | 2024-07-09 | 三一重机有限公司 | Damping hydraulic system and engineering machinery |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070028607A1 (en) * | 2003-04-17 | 2007-02-08 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive device |
| DE19610181B4 (en) * | 1996-03-15 | 2007-06-06 | Bosch Rexroth Aktiengesellschaft | Hydraulic control device for a hydraulic consumer with a pulling load |
| CN201932886U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Floating and locking device for swing axle of aerial working platform |
| CN202006219U (en) * | 2011-01-06 | 2011-10-12 | 中冶东方工程技术有限公司 | Hydraulic control system |
-
2013
- 2013-05-27 CN CN201310202192XA patent/CN103277364A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19610181B4 (en) * | 1996-03-15 | 2007-06-06 | Bosch Rexroth Aktiengesellschaft | Hydraulic control device for a hydraulic consumer with a pulling load |
| US20070028607A1 (en) * | 2003-04-17 | 2007-02-08 | Hitachi Construction Machinery Co., Ltd. | Hydraulic drive device |
| CN201932886U (en) * | 2010-11-29 | 2011-08-17 | 广西玉柴重工有限公司 | Floating and locking device for swing axle of aerial working platform |
| CN202006219U (en) * | 2011-01-06 | 2011-10-12 | 中冶东方工程技术有限公司 | Hydraulic control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN110285100A (en) * | 2019-06-28 | 2019-09-27 | 三一重机有限公司 | Damping hydraulic system and engineering machinery |
| CN110285100B (en) * | 2019-06-28 | 2024-07-09 | 三一重机有限公司 | Damping hydraulic system and engineering machinery |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130904 |