CN104421226A - Hydraulic control system for reciprocating test beds - Google Patents
Hydraulic control system for reciprocating test beds Download PDFInfo
- Publication number
- CN104421226A CN104421226A CN201310396116.7A CN201310396116A CN104421226A CN 104421226 A CN104421226 A CN 104421226A CN 201310396116 A CN201310396116 A CN 201310396116A CN 104421226 A CN104421226 A CN 104421226A
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- China
- Prior art keywords
- valve
- working port
- hydraulic control
- oil
- oil hydraulic
- 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
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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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
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- 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
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
-
- 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
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a hydraulic control system for reciprocating test beds. The hydraulic control system comprises a reversing valve, a one-way speed control valve and a hydraulic control one-way valve. A first working port and a second working port of the reversing valve are respectively communicated with a rodless cavity and a rod cavity of a hydraulic cylinder, a third working port and a fourth working port of the reversing valve are respectively communicated with oil outlets of an oil tank and a hydraulic pump, an accumulator is mounted on the oil outlet of the hydraulic pump, the one-way speed control valve is mounted on a pipe arranged between the first working port of the reversing valve and the rodless cavity of the hydraulic cylinder, the rodless cavity and the rod cavity of the hydraulic cylinder are respectively communicated with an oil inlet and an oil outlet of the hydraulic control one-way valve, a hydraulic control oil port of the hydraulic control one-way valve is respectively communicated with the first working port of the reversing valve and the oil tank. The hydraulic control system for reciprocating test beds has the advantages of reasonable design, good using effects, high automation level, low cost, mechanic-electric-hydraulic integrative design, high intelligent level, stable and reliable operation and long service life.
Description
Technical field
The invention belongs to hydraulic transmission technology field, relate to a kind of hydraulic control system, be specifically related to a kind of hydraulic control system for Cyclic test platform.
Background technique
Cyclic test refers to that unit under test moves back and forth under external force.The function of Cyclic test platform is the working condition of certain parts of simulation, carries out compression testing, to examine the reliability of unit under test inner seal with the frequency of 5-50 time/min to it.Common Cyclic test platform is generally realized by connecting rod, slidercrank mechanism, crankrocker mechanism, eccentric mechanism or cam spring mechanism, these mechanism's ubiquity complex structures, the problems such as running state is undesirable, the Cyclic test platform of hydraulic drive type solves the problems referred to above well.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency of the prior art, provide a kind of Cyclic test platform hydraulic control system, it is reasonable in design, and using effect is good, automaticity is high, and operating cost is low, and mechanical-electrical-hydraulic integration designs, intelligence degree is high, stable and reliable operation, long service life.
For achieving the above object, the technical solution used in the present invention is: a kind of Cyclic test platform hydraulic control system, comprise fuel tank, the oil hydraulic pump of high pressure liquid force feed is provided for system and drives the reciprocating oil hydraulic cylinder of unit under test, it is characterized in that: also comprise selector valve, one-way speed-regulating valve and Pilot operated check valve, first working port of described selector valve is communicated with rod chamber with the rodless cavity of described oil hydraulic cylinder respectively with the second working port, 3rd working port of described selector valve is communicated with the oil outlet of described fuel tank with described oil hydraulic pump respectively with the 4th working port, the oil outlet place of described oil hydraulic pump is provided with accumulator, pipeline between first working port of described selector valve and the rodless cavity of described oil hydraulic cylinder is provided with described one-way speed-regulating valve, the rodless cavity of described oil hydraulic cylinder is communicated with oil outlet with the filler opening of described Pilot operated check valve respectively with rod chamber, the hydraulic control hydraulic fluid port of described Pilot operated check valve is communicated with fuel tank with the first working port of described selector valve respectively, pipeline between second working port of described selector valve and the rod chamber of described oil hydraulic cylinder is provided with one-way valve two.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described hydraulic pump outlet place is provided with one-way valve one and relief valve.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described oil hydraulic pump inlet is provided with oil purifier.
Above-mentioned Cyclic test platform hydraulic control system, is characterized in that: described selector valve is three-position four-way electromagnetic directional valve, and described Pilot operated check valve is the formula Pilot operated check valve that leaks.
The present invention compared with prior art has the following advantages:
(1) this Cyclic test platform is reasonable by hydraulic control system design, and oil hydraulic cylinder has differential connection speed accelerating circuits, and using effect is good.
(2) this Cyclic test platform hydraulic control system automaticity is high, and according to the automatic control program designed Cyclic test platform feature, can make the automatic operation of equipment, operating cost is low.
(3) this Cyclic test platform hydraulic control system adopts mechanical-electrical-hydraulic integration design, and its intelligence degree is very high, without the need to manual tune during work.
(4) this Cyclic test platform hydraulic control system in running without rigid impulse, stable and reliable operation, long service life.
Below by drawings and Examples, the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is hydraulic control principle schematic of the present invention.
Description of reference numerals:
1-fuel tank; 2-oil hydraulic pump; 3-one-way valve one;
4-accumulator; 5-selector valve; 6-one-way speed-regulating valve;
7-oil hydraulic cylinder; 8-Pilot operated check valve; 9-one-way valve two;
10-relief valve; 11-oil purifier.
Embodiment
A kind of Cyclic test platform hydraulic control system as shown in Figure 1, comprises fuel tank 1, provides the oil hydraulic pump 2 of high pressure liquid force feed and drive the reciprocating oil hydraulic cylinder 7 of unit under test for system, also comprise selector valve 5, one-way speed-regulating valve 6 and Pilot operated check valve 8; The C mouth of described selector valve 5 is communicated with rod chamber with the rodless cavity of described oil hydraulic cylinder 7 respectively with D mouth, the P mouth of described selector valve 5 is communicated with the oil outlet of described fuel tank 1 with described oil hydraulic pump 2 respectively with O mouth, the oil outlet place of described oil hydraulic pump 2 is provided with accumulator 4, and accumulator 4 can play the effect of energy storage pressurize when oil hydraulic pump 2 does not work.Pipeline between the C mouth of described selector valve 5 and the rodless cavity of described oil hydraulic cylinder 7 is provided with described one-way speed-regulating valve 6, the rodless cavity of described oil hydraulic cylinder 7 is communicated with oil outlet with the filler opening of described Pilot operated check valve 8 respectively with rod chamber, the hydraulic control hydraulic fluid port of described Pilot operated check valve 8 is communicated with fuel tank 1 with the C mouth of described selector valve 5 respectively, and the pipeline between the D mouth of described selector valve 5 and the rod chamber of described oil hydraulic cylinder 7 is provided with one-way valve 29.
In the present embodiment, described oil hydraulic pump 2 outlet port is provided with one-way valve 1 and relief valve 10.
In the present embodiment, described oil hydraulic pump 2 inlet is provided with oil purifier 11.
In the present embodiment, described selector valve 5 is three-position four-way electromagnetic directional valve, and described Pilot operated check valve 8 is the formula Pilot operated check valve that leaks.
The working procedure of Cyclic test platform hydraulic control system of the present invention is:
When selector valve 5 left connecting systems, it is two-way that oil hydraulic pump 2 exports high-pressure and hydraulic oil content: a road enters the rodless cavity of oil hydraulic cylinder 7 through one-way valve 1, the left position of selector valve 5 and one-way speed-regulating valve 6, thus the piston rod of oil hydraulic cylinder 7 is stretched out; Another road enters the X hydraulic control hydraulic fluid port of Pilot operated check valve 8, open the spool of Pilot operated check valve 8, the hydraulic oil of oil hydraulic cylinder 7 rod chamber flows to A mouth from the B mouth of Pilot operated check valve 8, finally enter in oil hydraulic cylinder 7 rodless cavity, promote piston rod F.F., form differential connection to return, realize the Fast Compression of tested nose.
When selector valve 5 right connecting systems, oil hydraulic pump 2 exports high pressure liquid force feed after one-way valve 29, enter oil hydraulic cylinder 7 rod chamber, thus the piston rod of oil hydraulic cylinder 7 is shunk, the now A mouth of Pilot operated check valve 8 and the cut-off of B mouth, the hydraulic oil in oil hydraulic cylinder 7 rodless cavity is through the right bit stream oil sump tank 1 of selector valve 5.
When selector valve 5 meta connecting system, the high pressure liquid force feed that oil hydraulic pump 2 exports flows back to fuel tank 1 after relief valve 10, and the piston rod of oil hydraulic cylinder 7 all can stop in any travel position.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solution of the present invention.
Claims (4)
1. a Cyclic test platform hydraulic control system, comprise fuel tank (1), the oil hydraulic pump of high pressure liquid force feed (2) is provided for system and drives the reciprocating oil hydraulic cylinder of unit under test (7), it is characterized in that: also comprise selector valve (5), one-way speed-regulating valve (6) and Pilot operated check valve (8), first working port of described selector valve (5) is communicated with rod chamber with the rodless cavity of described oil hydraulic cylinder (7) respectively with the second working port, 3rd working port of described selector valve (5) is communicated with the oil outlet of described fuel tank (1) with described oil hydraulic pump (2) respectively with the 4th working port, the oil outlet place of described oil hydraulic pump (2) is provided with accumulator (4), pipeline between first working port of described selector valve (5) and the rodless cavity of described oil hydraulic cylinder (7) is provided with described one-way speed-regulating valve (6), the rodless cavity of described oil hydraulic cylinder (7) is communicated with oil outlet with the filler opening of described Pilot operated check valve (8) respectively with rod chamber, the hydraulic control hydraulic fluid port of described Pilot operated check valve (8) is communicated with fuel tank (1) with the first working port of described selector valve (5) respectively, pipeline between second working port of described selector valve (5) and the rod chamber of described oil hydraulic cylinder (7) is provided with one-way valve two (9).
2. according to Cyclic test platform hydraulic control system according to claim 1, it is characterized in that: described oil hydraulic pump (2) outlet port is provided with one-way valve one (3) and relief valve (10).
3. according to Cyclic test platform hydraulic control system according to claim 1, it is characterized in that: described oil hydraulic pump (2) inlet is provided with oil purifier (11).
4. according to Cyclic test platform hydraulic control system according to claim 1, it is characterized in that: described selector valve (5) is three-position four-way electromagnetic directional valve, described Pilot operated check valve (8) is the formula Pilot operated check valve that leaks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310396116.7A CN104421226A (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test beds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310396116.7A CN104421226A (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test beds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104421226A true CN104421226A (en) | 2015-03-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310396116.7A Pending CN104421226A (en) | 2013-09-03 | 2013-09-03 | Hydraulic control system for reciprocating test beds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104421226A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477807A (en) * | 2016-01-21 | 2016-04-13 | 上海金盾特种车辆装备有限公司 | Nitrogen and hydraulic powered impact piercing gun for water tower fire truck in airport |
| CN108488113A (en) * | 2018-03-30 | 2018-09-04 | 江苏恒立液压科技有限公司 | Self-action hydraulic circuit system |
| CN108919133A (en) * | 2018-07-27 | 2018-11-30 | 东北大学 | Electric automobile power battery group external short circuit electronic-hydraulic complex control testing stand and method |
| CN109192046A (en) * | 2018-09-28 | 2019-01-11 | 西北工业大学 | A kind of hydraulic circuit comprehensive experiment table Internet-based |
| CN109708838A (en) * | 2019-01-30 | 2019-05-03 | 徐州市全球通精密钢管有限公司 | A kind of crank connecting link double-cylinder hydraulic hf and hv pulse impact test apparatus and method |
-
2013
- 2013-09-03 CN CN201310396116.7A patent/CN104421226A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105477807A (en) * | 2016-01-21 | 2016-04-13 | 上海金盾特种车辆装备有限公司 | Nitrogen and hydraulic powered impact piercing gun for water tower fire truck in airport |
| CN108488113A (en) * | 2018-03-30 | 2018-09-04 | 江苏恒立液压科技有限公司 | Self-action hydraulic circuit system |
| CN108488113B (en) * | 2018-03-30 | 2020-12-04 | 江苏恒立液压科技有限公司 | Automatic hydraulic circuit system |
| CN108919133A (en) * | 2018-07-27 | 2018-11-30 | 东北大学 | Electric automobile power battery group external short circuit electronic-hydraulic complex control testing stand and method |
| CN109192046A (en) * | 2018-09-28 | 2019-01-11 | 西北工业大学 | A kind of hydraulic circuit comprehensive experiment table Internet-based |
| CN109708838A (en) * | 2019-01-30 | 2019-05-03 | 徐州市全球通精密钢管有限公司 | A kind of crank connecting link double-cylinder hydraulic hf and hv pulse impact test apparatus and method |
| CN109708838B (en) * | 2019-01-30 | 2023-09-22 | 徐州市全球通精密钢管有限公司 | Crank connecting rod double-cylinder hydraulic high-frequency high-voltage pulse impact test device and method |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150318 |