CN102297175B - Quantitative oil feeder - Google Patents
Quantitative oil feeder Download PDFInfo
- Publication number
- CN102297175B CN102297175B CN201010206692.7A CN201010206692A CN102297175B CN 102297175 B CN102297175 B CN 102297175B CN 201010206692 A CN201010206692 A CN 201010206692A CN 102297175 B CN102297175 B CN 102297175B
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- Prior art keywords
- hydraulic
- movable end
- end cover
- rod
- piston rod
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Abstract
The invention discloses a quantitative oil feeder, which comprises a single-rod double-acting hydraulic cylinder and a hydraulic drive module, wherein the hydraulic cylinder comprises a cylinder body, a piston, a piston rod, a front cylinder cover and a rear cylinder cover; the free end of the piston rod is provided with a limit nut; a movable end cover is inserted in the piston rod and the inner wall of the movable end cover is in thread fit with the outer wall of the front cylinder cover; the movable end cover is driven by a driving mechanism to rotate relative to the front cylinder cover; a rod cavity and a rodless cavity in the cylinder body are connected with the hydraulic drive module through pipelines; a one-way valve is arranged on a pipeline between the rod cavity and the hydraulic drive module; and an electromagnetic valve is connected to a pipeline between the one-way valve and the rod cavity, and is provided with a hydraulic oil output port. The quantitative oil feeder can ensure that hydraulic oil with the same volume can be output in each acting period of a hydraulic actuator, so that the hydraulic actuator is subjected to higher positional repeatability control; moreover, the quantitative oil feeder is simple in structure, low in manufacturing and using cost and suitable for wide application.
Description
Technical field
The invention belongs to technical field of hydraulic, be specifically related to a kind ofly to provide the quantitative oil feeder of quantitative hydraulic oil for hydraulic actuator.
Background technique
Hydraulic actuator is a kind of energy conversion device hydraulic energy being changed into mechanical energy, is widely used in industrial automation.At present, accurately control for the position of hydraulic actuator as oil hydraulic cylinder, what generally adopt is all add position feedback by servovalve to form the mode of closed-loop system and carry out controlling.But the servovalve price comparison that this control mode uses is expensive, and belong to high-precision hydraulic element due to servovalve, therefore also corresponding oil filtering device to be equipped with, comprehensive, the position needing higher cost of production and user cost could realize hydraulic actuator exactly accurately controls.
Summary of the invention
The object of the invention is to for the deficiencies in the prior art part, the quantitative oil feeder that a kind of structure is simple, manufacturing cost and use cost is lower, control accuracy is higher is provided.
For achieving the above object, the present invention adopts following technological scheme to realize:
Quantitative oil feeder, comprises a single pole double-acting hydraulic cylinder and a hydraulic driving module; Described oil hydraulic cylinder comprises cylindrical shell, piston, piston rod, front end housing and back cylinder cover, a stop nut is provided with at the free end of piston rod, and having a movable end cover to be arranged in piston rod and its inwall coordinates with the outer wall thread of front end housing, this movable end cover drives it to rotate relative to front end housing by a driving mechanism; Rod chamber in described cylindrical shell and without liver chamber respectively by pipeline and hydraulic driving model calling, and pipeline between rod chamber and hydraulic driving module arranges an one-way valve, and pipeline between one-way valve and rod chamber accesses a solenoid valve, this solenoid valve is provided with hydraulic oil delivery outlet.
Further, above-mentioned driving mechanism comprises a motor; One drive sprocket, is connected with the output shaft of motor; One driven sprocket; One drive chain, is connected with drive sprocket and driven sprocket; One gear, is coaxially connected with driven sprocket and engages with the periphery wall of movable end cover.
Above-mentioned hydraulic driving module specifically comprises hydraulic power and reversing solenoid valve.
Pass through the present invention, can ensure can the identical hydraulic oil of delivery volume in each action cycle of hydraulic actuator, thus make hydraulic actuator obtain higher positional repeatability control, and structure is simple, manufacturing cost and use cost is lower, is suitable for extensive use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation of the present invention first working state;
Fig. 3 is the structural representation of the present invention second working state.
In figure:
1-hydraulic driving module; 11-hydraulic power; 1DT-reversing solenoid valve; 2-oil hydraulic cylinder; 21-cylindrical shell; 22-piston; 23-piston rod; 24-front end housing; 25-back cylinder cover; 3-stop nut; 4-movable end cover; 5-driving mechanism; 51-motor; 52-drive sprocket; 53-driven sprocket; 54-drive chain; 55-gear; 6-one-way valve; 2DT-solenoid valve.
Now in conjunction with the accompanying drawings and embodiments the present invention is described in further detail:
Embodiment
As shown in Figure 1, quantitative oil feeder of the present invention forms primarily of hydraulic driving module 1, oil hydraulic cylinder 2, stop nut 3, movable end cover 4, driving mechanism 5, one-way valve 6 and solenoid valve 2DT.
Hydraulic driving module 1 mainly comprises hydraulic power 11 and reversing solenoid valve 1DT.Oil hydraulic cylinder 2 is made up of cylindrical shell 21, piston 22, piston rod 23, front end housing 24 and back cylinder cover 25.Stop nut 3 is arranged on the free end of piston rod 23.Movable end cover 4 is arranged in piston rod 23, and the periphery wall screw-thread fit of its inner circle wall and front end housing 24.Driving mechanism 5 is made up of motor 51, drive sprocket 52, drive chain 53, driven sprocket 54 and gear 55, drive sprocket 52 is arranged on the output shaft of motor 51, drive chain is connected with drive sprocket 52 and driven sprocket 54, and gear 55 and driven sprocket are coaxially connected and engage with the periphery wall of movable end cover 4.The A mouth of the rodless cavity of oil hydraulic cylinder 2 is connected with reversing solenoid valve 1DT by pipeline, the B mouth of the rod chamber of oil hydraulic cylinder is connected with selector valve 1DT by one-way valve 6, and pipeline between B mouth and one-way valve accesses solenoid valve 2DT, the delivery outlet O of solenoid valve connects external hydraulic executive component.
Working procedure of the present invention is as follows:
As shown in Figure 2, quantitative oil feeder of the present invention is in the first working state, now reversing solenoid valve 1DT and solenoid valve 2DT obtains electric, the rodless cavity that the hydraulic oil of hydraulic power 11 enters oil hydraulic cylinder through reversing solenoid valve 1DT from A mouth makes to be full of hydraulic oil in rodless cavity, piston is in the high order end of cylindrical shell, now starting electrical machinery 51 outputting power, by drive sprocket 52, the driving belt moving gear of drive chain 53 and driven sprocket 54 rotates, thus drive movable end cover 4 to move axially along piston rod 23 while work rotates relative to front cover 24, passive distance S between movable end cover 4 and stop nut 3 is changed, when this passive distance S reaches setting value, namely disable motor makes this passive distance S be certain value.
As shown in Figure 3, make reversing solenoid valve 1DT and solenoid valve 2DT all must not electricity, the hydraulic oil of hydraulic power 11 enters the rod chamber of oil hydraulic cylinder through reversing solenoid valve 1DT and one-way valve 6 from B mouth, promote piston to move to the right of cylindrical shell, until touch when movable end cover 4 produces mechanical position limitation when stop nut 3 and stop.Now the stroke S1 of piston is passive distance S, and because passive distance S is certain value, therefore effective oil storage volume V of rod chamber is also certain value.Reversing solenoid valve 1DT and solenoid valve 2DT is made to obtain electric again, the hydraulic oil of hydraulic power 11 enters the rodless cavity of oil hydraulic cylinder through reversing solenoid valve 1DT from A mouth and promotes piston rod to the left of cylindrical shell and move, hydraulic oil now in rod chamber is discharged from B mouth, due to the effect of one-way valve 6, the hydraulic oil flowed out from B mouth all flows into solenoid valve 2DT and flows out to external hydraulic executive component from the delivery outlet O of solenoid valve.
From working procedure of the present invention, the actual volume V of oil hydraulic cylinder rod chamber changes with the passive distance S between movable end cover and stop nut and changes, as long as namely change the numerical value of this passive distance S, just can change effective oil storage volume V, and then change the fuel delivery that the present invention exports external hydraulic executive component to.As long as and this passive distance S is certain value, then the present invention exports the fuel delivery of external hydraulic executive component to is also certain value, thus makes hydraulic actuator can repeat to stop at the same position of midway in each cycle of motion, and positional repeatability is higher.And, driving mechanism has larger reduction speed ratio, the High Rotation Speed of motor can be decelerated to the low speed rotation of movable end cover by it, by can realize the fine setting of hydraulic cylinder travel easily to the control of electric machine rotation time, the positioning control for external hydraulic executive component has sufficiently high resolution.
Hydraulic element of the present invention and electrical apparatus element are existing common components, resulting cost and servovalve add compared with traditional scheme that position feedback forms closed-loop system larger reduction, electrical control of the present invention is simultaneously also very simple, without the need to writing complicated closed loop control algorithm, therefore implement threshold of the present invention lower, be more conducive to extensively promote the use of.
The present invention is not limited to above-mentioned mode of execution, if do not depart from the spirit and scope of the present invention to various change of the present invention or modification, if these are changed and modification belongs within claim of the present invention and equivalent technologies scope, then the present invention is also intended to comprise these change and modification.
Claims (3)
1. quantitative oil feeder, is characterized in that, comprises a single pole double-acting hydraulic cylinder and a hydraulic driving module; Described oil hydraulic cylinder comprises cylindrical shell, piston, piston rod, front end housing and back cylinder cover, is provided with a stop nut at the free end of piston rod; And having a movable end cover, described piston rod is arranged in wherein, and the inwall of described movable end cover coordinates with the outer wall thread of front end housing, and this movable end cover drives it to rotate relative to front end housing by a driving mechanism; Rod chamber in described cylindrical shell and without liver chamber respectively by pipeline and hydraulic driving model calling, and pipeline between rod chamber and hydraulic driving module arranges an one-way valve, and pipeline between one-way valve and rod chamber accesses a solenoid valve, this solenoid valve is provided with hydraulic oil delivery outlet.
2. quantitative oil feeder according to claim 1, is characterized in that, described driving mechanism comprises
One motor;
One drive sprocket, is connected with the output shaft of motor;
One driven sprocket;
One drive chain, is connected with drive sprocket and driven sprocket;
One gear, is coaxially connected with driven sprocket and engages with the periphery wall of movable end cover.
3. quantitative oil feeder according to claim 1, is characterized in that, described hydraulic driving module comprises hydraulic power and reversing solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206692.7A CN102297175B (en) | 2010-06-22 | 2010-06-22 | Quantitative oil feeder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010206692.7A CN102297175B (en) | 2010-06-22 | 2010-06-22 | Quantitative oil feeder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102297175A CN102297175A (en) | 2011-12-28 |
| CN102297175B true CN102297175B (en) | 2014-12-24 |
Family
ID=45357788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010206692.7A Expired - Fee Related CN102297175B (en) | 2010-06-22 | 2010-06-22 | Quantitative oil feeder |
Country Status (1)
| Country | Link |
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| CN (1) | CN102297175B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877890B (en) * | 2012-09-19 | 2015-01-14 | 北京工业大学 | Lubrication system of single-screw expansion engine and control method of lubrication system |
| CN104295560A (en) * | 2013-07-19 | 2015-01-21 | 泰州市恒源建材机械有限公司 | Gas-liquid booster with stroke limiting device |
| CN103522575B (en) * | 2013-10-22 | 2015-05-13 | 宁波汇众粉末机械制造有限公司 | Mechanism powder forming machine and quantitative oil supply system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100827A (en) * | 1985-04-01 | 1985-12-20 | 华中工学院 | Hydraulic system with constant displacement pump |
| EP0318505B1 (en) * | 1986-08-04 | 1992-04-22 | McDONNELL DOUGLAS CORPORATION | Solenoid actuated pneumatic valve |
| CN101451560A (en) * | 2008-12-31 | 2009-06-10 | 天津理工大学 | Intelligent driving method of hydrocylinder precise stroke and outside driving unit thereof |
| CN201502578U (en) * | 2009-09-22 | 2010-06-09 | 曾滨 | Accurate control device for cylinder movement |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003336603A (en) * | 2002-05-17 | 2003-11-28 | Mitsubishi Heavy Ind Ltd | Hydraulic drive device and steam turbine with hydraulic controller therefor |
-
2010
- 2010-06-22 CN CN201010206692.7A patent/CN102297175B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85100827A (en) * | 1985-04-01 | 1985-12-20 | 华中工学院 | Hydraulic system with constant displacement pump |
| EP0318505B1 (en) * | 1986-08-04 | 1992-04-22 | McDONNELL DOUGLAS CORPORATION | Solenoid actuated pneumatic valve |
| CN101451560A (en) * | 2008-12-31 | 2009-06-10 | 天津理工大学 | Intelligent driving method of hydrocylinder precise stroke and outside driving unit thereof |
| CN201502578U (en) * | 2009-09-22 | 2010-06-09 | 曾滨 | Accurate control device for cylinder movement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102297175A (en) | 2011-12-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG KEDA CLEAN ENERGY CO., LTD. Free format text: FORMER NAME: GUANGDONG KEDA ELECTROMECHANICAL CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 528313 Guangdong City, Shunde province Chencun Town, industrial park, long Ring Road West Town, No. 1 Patentee after: KEDA CLEAN ENERGY CO., LTD. Address before: 528313 Guangdong City, Shunde province Chencun Town, industrial park, long Ring Road West Town, No. 1 Patentee before: Guangdong Keda Electromechanical Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141224 Termination date: 20190622 |