CN204082718U - The pylon hydraulic system for lifting of steady variable-speed - Google Patents
The pylon hydraulic system for lifting of steady variable-speed Download PDFInfo
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- CN204082718U CN204082718U CN201420426712.5U CN201420426712U CN204082718U CN 204082718 U CN204082718 U CN 204082718U CN 201420426712 U CN201420426712 U CN 201420426712U CN 204082718 U CN204082718 U CN 204082718U
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- mouth
- oil
- valve
- hydraulic fluid
- pylon
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Abstract
The pylon hydraulic system for lifting of steady variable-speed, relate to the elevating system of the pylon of wind-driven generator, comprise fuel tank, motor, oil pump, selector valve, oil cylinder, selector valve is arranged oil-feed P mouth, oil return T mouth, work A mouth, work B mouth, the oil-feed P mouth of selector valve is connected with oily delivery side of pump, the oil return T mouth of selector valve is connected with fuel tank, the cylinder barrel of oil cylinder connects Bidirectional balanced valve, Bidirectional balanced valve is arranged four hydraulic fluid ports, first hydraulic fluid port of Bidirectional balanced valve is connected with the rod chamber of oil cylinder, second hydraulic fluid port is connected with the rodless cavity of oil cylinder, 3rd hydraulic fluid port is connected with the work A mouth of selector valve, 4th hydraulic fluid port connects series flow control valve, series flow control valve is connected with the work B mouth of selector valve.The flow of Bidirectional balanced valve delivery outlet of the present utility model is constant, and the process medium velocity that pylon is declining is constant, jitter phenomenon can not occur.The speed that pylon declines need be regulated for another scene, directly rotate the knob of series flow control valve, simple to operate, safe and reliable.
Description
Technical field
The present invention relates to the field of wind-driven generator, particularly relate to the elevating system of the pylon of wind-driven generator.
Background technique
Pylon hydraulic system for lifting is risen by the pylon of wind-driven generator and the set of system of landing, controls the stretching out of oil cylinder, retraction movement, thus realize rise, the landing of pylon by operating the handle of hand-operated direction valve.Because the center of gravity of pylon and the arm of force constantly change in movement process, the size of required oil cylinder push and draw force is also constantly change, particularly when pylon is in the process of landing, moment is increasing, the speed that pylon runs can be more and more faster, and rate of descent is too fast, not only can damage equipment, also security incident can be caused, so rate of descent must within controlled range.Traditional pressure regulation and speed governing adopt the Pilot operated check valve of overlapping and bidirectional throttling valve to realize, need constantly to regulate the size of bidirectional throttling valve opening to reduce oil cylinder oil back chamber flow to increase back pressure in decline process, reduce the speed that pylon declines, need the switch constantly regulating bidirectional throttling valve in operation, very inconvenient, because being not electrodeless adjustment, there will be serious jitter phenomenon in pylon decline process, the wind-driven generator that time serious, pylon top is installed is easy to damage.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of pylon hydraulic system for lifting of steady variable-speed is provided, pylon shake when avoiding oil cylinder to retract.
The object of the present invention is achieved like this: the steadily pylon hydraulic system for lifting of variable-speed, comprise fuel tank, motor, oil pump, selector valve, oil cylinder, motor is connected with oil pump, the input end of oil pump connects fuel tank, selector valve is arranged oil-feed P mouth, oil return T mouth, work A mouth, work B mouth, the oil-feed P mouth of selector valve is connected with oily delivery side of pump, the oil return T mouth of selector valve is connected with fuel tank, the cylinder barrel of described oil cylinder connects Bidirectional balanced valve, Bidirectional balanced valve is arranged four hydraulic fluid ports, first hydraulic fluid port of Bidirectional balanced valve is connected with the rod chamber of oil cylinder, second hydraulic fluid port is connected with the rodless cavity of oil cylinder, 3rd hydraulic fluid port is connected with the work A mouth of selector valve, 4th hydraulic fluid port connects series flow control valve, series flow control valve is connected with the work B mouth of selector valve.
The present invention by installing a Bidirectional balanced valve on the cylinder barrel of oil cylinder, Bidirectional balanced valve two hydraulic fluid ports are connected with two hydraulic fluid ports of oil cylinder, all the other two hydraulic fluid ports are connected with two hydraulic fluid ports of hydraulic station respectively, Bidirectional balanced valve can not change self flow because of the size of load and active force, the flow of delivery outlet is constant, so the process medium velocity that pylon is declining is constant, jitter phenomenon can not be there is.Separately on the valve block of hydraulic station, a board-like series flow control valve is installed, as the speed that scene need regulate pylon to decline, directly rotates the knob of series flow control valve, simple to operate, safe and reliable.
Accompanying drawing explanation
Fig. 1 is hydraulic schematic diagram of the present invention.
Embodiment
As shown in Figure 1, for the pylon hydraulic system for lifting of steady variable-speed, mainly comprise fuel tank 1, motor 2, oil pump 4, oil way valve block 14, selector valve 8, Bidirectional balanced valve 10, oil cylinder 11, motor 2 is connected with oil pump 4, the input end of oil pump 4 is connected with fuel tank 1 by oil absorption filter 3, oil absorption filter 3 is arranged in fuel tank 1, and the output terminal of oil pump 4 connects one-way valve 5, also arranges electric heater 6 in fuel tank 1.Selector valve 8 is arranged oil-feed P mouth, oil return T mouth, work A mouth, work B mouth, the oil-feed P mouth of selector valve 8 is connected with one-way valve 5, between one-way valve 5 and the oil-feed P mouth of selector valve 8, go back Bonding pressure table and switch 12, relief valve 13, the oil return T mouth of selector valve 8 is connected with fuel tank 1 by oil return filter cleaner 7.Bidirectional balanced valve 10 is connected on the cylinder barrel of oil cylinder 11, Bidirectional balanced valve 10 is arranged four hydraulic fluid ports, first hydraulic fluid port of Bidirectional balanced valve 10 is connected with the rod chamber of oil cylinder 11, second hydraulic fluid port is connected with the rodless cavity of oil cylinder 11,3rd hydraulic fluid port is connected with the work A mouth of selector valve 8,4th hydraulic fluid port connects series flow control valve 9, and series flow control valve 9 is connected with the work B mouth of selector valve 8.Series flow control valve 9, selector valve 8, pressure gauge and switch 12, relief valve 13 are arranged on oil way valve block 14.
Claims (3)
1. the pylon hydraulic system for lifting of steady variable-speed, comprise fuel tank, motor, oil pump, selector valve, oil cylinder, motor is connected with oil pump, the input end of oil pump connects fuel tank, selector valve is arranged oil-feed P mouth, oil return T mouth, work A mouth, work B mouth, the oil-feed P mouth of selector valve is connected with oily delivery side of pump, the oil return T mouth of selector valve is connected with fuel tank, it is characterized in that: on the cylinder barrel of described oil cylinder, connect Bidirectional balanced valve, Bidirectional balanced valve is arranged four hydraulic fluid ports, first hydraulic fluid port of Bidirectional balanced valve is connected with the rod chamber of oil cylinder, second hydraulic fluid port is connected with the rodless cavity of oil cylinder, 3rd hydraulic fluid port is connected with the work A mouth of selector valve, 4th hydraulic fluid port is connected with the work B mouth of selector valve.
2. the pylon hydraulic system for lifting of steady variable-speed according to claim 1, is characterized in that: the 4th hydraulic fluid port of described Bidirectional balanced valve connects series flow control valve, and series flow control valve is connected with the work B mouth of selector valve.
3. the pylon hydraulic system for lifting of steady variable-speed according to claim 1, is characterized in that: the input end of described oil pump is connected with fuel tank by oil absorption filter, and oil absorption filter is arranged in fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426712.5U CN204082718U (en) | 2014-07-31 | 2014-07-31 | The pylon hydraulic system for lifting of steady variable-speed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420426712.5U CN204082718U (en) | 2014-07-31 | 2014-07-31 | The pylon hydraulic system for lifting of steady variable-speed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204082718U true CN204082718U (en) | 2015-01-07 |
Family
ID=52175441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420426712.5U Expired - Fee Related CN204082718U (en) | 2014-07-31 | 2014-07-31 | The pylon hydraulic system for lifting of steady variable-speed |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204082718U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298944A (en) * | 2015-11-25 | 2016-02-03 | 上海电气液压气动有限公司 | Supporting oil cylinder system with pressure maintaining function |
| CN106351887A (en) * | 2016-10-09 | 2017-01-25 | 江苏万达丰重工机械有限公司 | Hydraulic driving device |
| CN107697808A (en) * | 2017-09-08 | 2018-02-16 | 安徽兴宇轨道装备有限公司 | A kind of lifting trolley control system of trackless deformation gantry crane |
| CN108163688A (en) * | 2018-02-08 | 2018-06-15 | 湖南电气职业技术学院 | A kind of stereo garage load balance system and balancing method of loads |
-
2014
- 2014-07-31 CN CN201420426712.5U patent/CN204082718U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105298944A (en) * | 2015-11-25 | 2016-02-03 | 上海电气液压气动有限公司 | Supporting oil cylinder system with pressure maintaining function |
| CN106351887A (en) * | 2016-10-09 | 2017-01-25 | 江苏万达丰重工机械有限公司 | Hydraulic driving device |
| CN107697808A (en) * | 2017-09-08 | 2018-02-16 | 安徽兴宇轨道装备有限公司 | A kind of lifting trolley control system of trackless deformation gantry crane |
| CN108163688A (en) * | 2018-02-08 | 2018-06-15 | 湖南电气职业技术学院 | A kind of stereo garage load balance system and balancing method of loads |
| CN108163688B (en) * | 2018-02-08 | 2024-05-14 | 湖南电气职业技术学院 | Stereo garage load balancing system and load balancing method |
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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: 20150107 Termination date: 20170731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |