CN106337848A - Hydraulic power unit - Google Patents
Hydraulic power unit Download PDFInfo
- Publication number
- CN106337848A CN106337848A CN201610849898.9A CN201610849898A CN106337848A CN 106337848 A CN106337848 A CN 106337848A CN 201610849898 A CN201610849898 A CN 201610849898A CN 106337848 A CN106337848 A CN 106337848A
- Authority
- CN
- China
- Prior art keywords
- valve
- filter
- hydraulic
- communicated
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/16—Servomotor systems without provision for follow-up action; Circuits therefor with two or more servomotors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
- F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B2211/00—Circuits for servomotor systems
- F15B2211/50—Pressure control
- F15B2211/505—Pressure control characterised by the type of pressure control means
Abstract
The invention discloses a hydraulic power unit. The hydraulic power unit comprises a first filter; the top of the first filter communicates with a hydraulic pump; the right side of the hydraulic pump is provided with a motor for driving the hydraulic pump; one end of the hydraulic pump communicates with a proportional pressure reducing valve through a pipeline; the proportional pressure reducing valve communicates with a first reversing valve and a second reversing valve; the top of the first reversing valve communicates with a first one-way valve and a second one-way valve; the top of the first one-way valve and the top of the second one-way valve communicate with a second filter and a third filter correspondingly; the second filter and the third filter communicate with oil ports of a first hydraulic cylinder through pipelines; an oil port in the bottom of the first reversing valve and an oil port in the bottom of the second reversing valve communicate with a second overflow valve through pipelines; and the second overflow valve communicates with an oil tank through a pipeline. According to the hydraulic power unit, the proportional pressure reducing valve is adopted, and the pressure can be flexibly adjusted, so that the system pressure is not fixed pressure any more and can be flexibly adjusted according to actual demands.
Description
Technical field
The present invention relates to fluid pressure control device technical field, specially a kind of hydraulic power unit.
Background technology
Hydraulic power unit is the common apparatus in hydraulic system, generally includes fuel tank, gear pump, fuel sucking pipe, oil return pipe,
Valve block, motor, valve block is connected between motor and gear pump, and the output shaft of motor passes through valve block and gear pump to connect, gear pump
It is immersed in fuel tank, fuel sucking pipe and oil return pipe are respectively positioned in fuel tank, are all connected on gear pump.Fuel sucking pipe is communicated with in-line,
Oil return pipe is identical with return line.During hydraulic power unit work, motor operation simultaneously drives gear pump to rotate by attachment means,
Under gear pumping action, the hydraulic oil in fuel tank is inhaled into valve block through fuel sucking pipe, by solenoid valve control hydraulic jack action,
The hydraulic oil that hydraulic cylinder returns flows back to fuel tank by return line.
Content of the invention
It is an object of the invention to provide a kind of hydraulic power unit, to solve the problems, such as to propose in above-mentioned background technology.
For achieving the above object, the present invention provides a kind of following technical scheme: hydraulic power unit, including the first filtration
Device, described first filter top is communicated with hydraulic pump, is provided with the motor driving hydraulic pump, described hydraulic pressure on the right side of described hydraulic pump
The proportional air relief valve of pipeline communication is passed through in pump one end, and described proportional pressure-reducing valve is communicated with the first reversal valve and the second reversal valve, institute
State the first reversal valve top and be communicated with the first check valve and the second check valve, described first check valve and the second check valve top are divided
It is not communicated with the second filter and the 3rd filter, described second filter and the 3rd filter pass through pipeline communication respectively in the
The hydraulic fluid port of one hydraulic cylinder, described second reversal valve top is communicated with the 3rd check valve and the 4th check valve, described 3rd check valve
The 4th filter and the 5th filter have been respectively communicated with it with the 4th check valve top, described 4th filter and the 5th filter divide
Not Tong Guo pipeline communication in the hydraulic fluid port of second hydraulic cylinder, described first reversal valve and the second reversal valve bottom hydraulic fluid port are all by pipeline
It is communicated with the second overflow valve, described second overflow valve passes through pipeline communication in fuel tank.
Preferably, described first reversal valve and the second reversal valve are three position four-way directional control valve.
Preferably, described hydraulic pump is communicated on the pipeline of proportional pressure-reducing valve and is communicated with the first overflow valve, and described first overflows
Stream valve is communicated with the pipeline being back to fuel tank.
Preferably, described proportional pressure-reducing valve is communicated in fuel tank.
Compared with prior art, the invention has the beneficial effects as follows: adoption rate air relief valve of the present invention, can be with flexible pressure
Power, so that system pressure is no longer fixing pressure, can carry out flexible according to actual needs.
Brief description
Fig. 1 is hydraulic control flow chart of the present invention.
In figure: 1 first filter, 2 hydraulic pumps, 3 motors, 4 first overflow valves, 5 second overflow valves, 6 proportional pressure-reducing valves, 7
First reversal valve, 8 second reversal valves, 9 first check valves, 10 second check valves, 11 the 3rd check valves, 12 the 4th check valves, 13
Second filter, 14 the 3rd filters, 15 the 4th filters, 16 the 5th filters, 17 first hydraulic cylinders, 18 second hydraulic cylinders.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
Refer to Fig. 1, the present invention provides a kind of a kind of technical scheme: hydraulic power unit, including the first filter 1, institute
State the first filter 1 top and be communicated with hydraulic pump 2, on the right side of described hydraulic pump 2, be provided with the motor 3 driving hydraulic pump 2, described hydraulic pressure
The proportional air relief valve of pipeline communication 6 is passed through in pump 2 one end, and described proportional pressure-reducing valve 6 is communicated with the first reversal valve 7 and the second reversal valve
8, described first reversal valve 7 top is communicated with the first check valve 9 and the second check valve 10, and described first check valve 9 and second is single
The second filter 13 and the 3rd filter 14, described second filter 13 and the 3rd filter 14 have been respectively communicated with it to valve 10 top
Pass through pipeline communication respectively in the hydraulic fluid port of first hydraulic cylinder 17, described second reversal valve 8 top is communicated with the 3rd check valve 11 He
4th check valve 12, described 3rd check valve 11 and the 4th check valve 12 top have been respectively communicated with the 4th filter 15 and five faults in diagnosis and treatment
Filter 16, described 4th filter 15 and the 5th filter 16 pass through pipeline communication respectively in the hydraulic fluid port of second hydraulic cylinder 18, institute
State the first reversal valve 7 and the second reversal valve 8 bottom hydraulic fluid port all has the second overflow valve 5, described second overflow valve 5 by pipeline communication
By pipeline communication in fuel tank.
Described first reversal valve 7 and the second reversal valve 8 are three position four-way directional control valve.Described hydraulic pump 2 is communicated in ratio
First overflow valve 4 is communicated with the pipeline of air relief valve 6, described first overflow valve 4 is communicated with the pipeline being back to fuel tank.Described ratio
Example air relief valve 6 is communicated in fuel tank.
Specifically, during use, motor 3 connects power supply and rotates, and drives hydraulic pump 2 to rotate, from hydraulic pump 2 to whole hydraulic system
Supply hydraulic fluid, the first filter 1 filters hydraulic oil apoplexy involving ZANG-organ thing, it is to avoid clogging hydraulic oil circuit.First overflow valve 4 is made safely
With when hydraulic fluid pressure is excessive, the first overflow valve 4 is opened, and hydraulic oil flows to fuel tank from the first overflow valve 4, decreases and is
System pressure, whole hydraulic system has four check valves, and the first check valve 9, the second check valve 10, the 3rd check valve 11 and the 4th are single
To valve 12, this 4 check valves are segmented into 2 groups, and the first check valve 9 and the second check valve 10 are one group, the 3rd check valve 11
It is one group with the 4th check valve 12.Every group of 2 check valves interact.When hydraulic oil enters hydraulic cylinder from the first check valve 9
When, also can pressurize to the second check valve 10 so that the second check valve 10 is also at open mode, hydraulic oil will be through simultaneously
One check valve 9 flows into hydraulic cylinder, then flows back to fuel tank from hydraulic cylinder through the second check valve 10.When hydraulic oil is from the second check valve 10
When flowing into hydraulic cylinder, reason is same, and the first check valve 9 also can be opened because of pressure, and hydraulic oil also can be from hydraulic cylinder through first
Check valve 9 flows back to oil cylinder.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and can carry out multiple changes, modification, replacement to these embodiments without departing from the principles and spirit of the present invention
And modification, the scope of the present invention be defined by the appended.
Claims (4)
1. a kind of hydraulic power unit, including the first filter (1) it is characterised in that: the connection of described first filter (1) top
There is hydraulic pump (2), be provided with the motor (3) driving hydraulic pump (2) on the right side of described hydraulic pump (2), described hydraulic pump (2) one end is passed through
The proportional air relief valve of pipeline communication (6), described proportional pressure-reducing valve (6) is communicated with the first reversal valve (7) and the second reversal valve (8),
Described first reversal valve (7) top is communicated with the first check valve (9) and the second check valve (10), described first check valve (9) and
Second check valve (10) top has been respectively communicated with the second filter (13) and the 3rd filter (14), described second filter (13)
Pass through pipeline communication with the 3rd filter (14) respectively in the hydraulic fluid port of first hydraulic cylinder (17), described second reversal valve (8) top
It is communicated with the 3rd check valve (11) and the 4th check valve (12), described 3rd check valve (11) and the 4th check valve (12) top are divided
It is not communicated with the 4th filter (15) and the 5th filter (16), described 4th filter (15) and the 5th filter (16) are respectively
By pipeline communication in the hydraulic fluid port of second hydraulic cylinder (18), described first reversal valve (7) and the second reversal valve (8) bottom hydraulic fluid port are equal
Second overflow valve (5) is had by pipeline communication, described second overflow valve (5) passes through pipeline communication in fuel tank.
2. a kind of hydraulic power unit according to claim 1 it is characterised in that: described first reversal valve (7) and second
Reversal valve (8) is three position four-way directional control valve.
3. a kind of hydraulic power unit according to claim 1 it is characterised in that: described hydraulic pump (2) is communicated in ratio
First overflow valve (4) is communicated with the pipeline of air relief valve (6), described first overflow valve (4) is communicated with the pipeline being back to fuel tank.
4. a kind of hydraulic power unit according to claim 1 it is characterised in that: described proportional pressure-reducing valve (6) is communicated in
Fuel tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610849898.9A CN106337848A (en) | 2016-09-26 | 2016-09-26 | Hydraulic power unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610849898.9A CN106337848A (en) | 2016-09-26 | 2016-09-26 | Hydraulic power unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106337848A true CN106337848A (en) | 2017-01-18 |
Family
ID=57838680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610849898.9A Pending CN106337848A (en) | 2016-09-26 | 2016-09-26 | Hydraulic power unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106337848A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110274774A (en) * | 2019-06-27 | 2019-09-24 | 燕山大学 | Simulate the pilot system blown out |
| CN111746576A (en) * | 2019-03-26 | 2020-10-09 | 比亚迪股份有限公司 | Guide wheel pressure adjusting device and method, bogie and railway vehicle |
| CN112901599A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic power unit, carriage lifting system and rail vehicle |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60240912A (en) * | 1984-05-15 | 1985-11-29 | Sanki Eng Co Ltd | Hydraulic device for control of movable fire grate in refuse incinerator |
| CN201546897U (en) * | 2009-11-24 | 2010-08-11 | 新华威尔液压系统(上海)有限公司 | Hydraulic brake control system for wind driven generator group |
| CN202021326U (en) * | 2011-02-17 | 2011-11-02 | 中冶连铸技术工程股份有限公司 | Automatic roll gap regulation hydraulic system of square billet withdrawal and straightening unit |
| CN104061193A (en) * | 2013-06-27 | 2014-09-24 | 湖北三江航天万山特种车辆有限公司 | Drum brake hydraulic system for multi-shaft heavy engineering machinery |
| CN104235088A (en) * | 2014-06-11 | 2014-12-24 | 西安昆仑液压传动机械厂 | Drilling rig hydraulic system |
| CN104776066A (en) * | 2015-04-22 | 2015-07-15 | 三峡大学 | Hydraulic system of flexible rod vibration test bench |
| CN204817539U (en) * | 2015-07-08 | 2015-12-02 | 北京首钢国际工程技术有限公司 | Hot rolling coil of strip turriform is restoreed thrust and is adjusted formula hydraulic means |
| CN105465058A (en) * | 2016-01-29 | 2016-04-06 | 洛阳理工学院 | Loading pressurizer of rolling bearing service life tester |
| CN205277954U (en) * | 2015-11-16 | 2016-06-01 | 中国三冶集团有限公司 | Hydraulic transmission system of hydraulic pressure lifting foot hand frame for construction |
| CN105805067A (en) * | 2016-04-29 | 2016-07-27 | 上海宏信设备工程有限公司 | Device for applying force to multiple points of steel supporting shaft synchronously |
| CN206111706U (en) * | 2016-09-26 | 2017-04-19 | 东洋重工机（大连）有限公司 | Hydraulic power unit |
-
2016
- 2016-09-26 CN CN201610849898.9A patent/CN106337848A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60240912A (en) * | 1984-05-15 | 1985-11-29 | Sanki Eng Co Ltd | Hydraulic device for control of movable fire grate in refuse incinerator |
| CN201546897U (en) * | 2009-11-24 | 2010-08-11 | 新华威尔液压系统(上海)有限公司 | Hydraulic brake control system for wind driven generator group |
| CN202021326U (en) * | 2011-02-17 | 2011-11-02 | 中冶连铸技术工程股份有限公司 | Automatic roll gap regulation hydraulic system of square billet withdrawal and straightening unit |
| CN104061193A (en) * | 2013-06-27 | 2014-09-24 | 湖北三江航天万山特种车辆有限公司 | Drum brake hydraulic system for multi-shaft heavy engineering machinery |
| CN104235088A (en) * | 2014-06-11 | 2014-12-24 | 西安昆仑液压传动机械厂 | Drilling rig hydraulic system |
| CN104776066A (en) * | 2015-04-22 | 2015-07-15 | 三峡大学 | Hydraulic system of flexible rod vibration test bench |
| CN204817539U (en) * | 2015-07-08 | 2015-12-02 | 北京首钢国际工程技术有限公司 | Hot rolling coil of strip turriform is restoreed thrust and is adjusted formula hydraulic means |
| CN205277954U (en) * | 2015-11-16 | 2016-06-01 | 中国三冶集团有限公司 | Hydraulic transmission system of hydraulic pressure lifting foot hand frame for construction |
| CN105465058A (en) * | 2016-01-29 | 2016-04-06 | 洛阳理工学院 | Loading pressurizer of rolling bearing service life tester |
| CN105805067A (en) * | 2016-04-29 | 2016-07-27 | 上海宏信设备工程有限公司 | Device for applying force to multiple points of steel supporting shaft synchronously |
| CN206111706U (en) * | 2016-09-26 | 2017-04-19 | 东洋重工机（大连）有限公司 | Hydraulic power unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111746576A (en) * | 2019-03-26 | 2020-10-09 | 比亚迪股份有限公司 | Guide wheel pressure adjusting device and method, bogie and railway vehicle |
| CN110274774A (en) * | 2019-06-27 | 2019-09-24 | 燕山大学 | Simulate the pilot system blown out |
| CN110274774B (en) * | 2019-06-27 | 2020-08-11 | 燕山大学 | Test system for simulating tire burst |
| CN112901599A (en) * | 2021-01-26 | 2021-06-04 | 中车青岛四方机车车辆股份有限公司 | Hydraulic power unit, carriage lifting system and rail vehicle |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170118 |