CN102927090A - Connecting method of hydraulic system pressure reducing loop of hydraulic test bench - Google Patents
Connecting method of hydraulic system pressure reducing loop of hydraulic test bench Download PDFInfo
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- CN102927090A CN102927090A CN2012104673961A CN201210467396A CN102927090A CN 102927090 A CN102927090 A CN 102927090A CN 2012104673961 A CN2012104673961 A CN 2012104673961A CN 201210467396 A CN201210467396 A CN 201210467396A CN 102927090 A CN102927090 A CN 102927090A
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- pressure reducing
- pressure
- reducing valve
- hydraulic system
- hydraulic
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Abstract
The invention discloses a connecting method of a hydraulic system pressure reducing loop of a hydraulic test bench. The connecting method comprises the following steps : a constant-value pressure reducing valve is connected in series with peripheral branch of a low-pressure pump of a hydraulic system oil channel; a second pressure reducing valve is connected in parallel to a branch opposite to the constant-value pressure reducing valve; the second pressure reducing valve can be adjusted so as to provide a stable working pressure to a branch, wherein the stable working pressure is less than the pressure setting value of the system; the branch is connected with a control oil channel of a working clamping, guide rail lubricating and hydraulic system; an one-way valve is arranged at one side of the second pressure reducing valve in the pressure reducing loop, so that the pressure of a hydraulic cylinder can be prevented from being interfered by the pressure of a main oil channel once the pressure of the main oil channel is less than the setting value of the constant-value pressure reducing valve. The connecting method has the beneficial effects that the oil channel is simplified, the reliability in action is ensured, higher precision in switching position is achieved, and sufficient changing-over precision can be obtained.
Description
Technical field
The present invention relates to the hydraulics field, relate in particular to a kind of hydraulic system pressure reducing circuit connecting means of hydraulic test bench.
Background technique
Hydraulics is one of key technology that realizes modernized transmission and control.Hydraulicdriven various element because lightweight, volume is little, can arrange easily and flexibly as required; realize conveniently, easily straight line motion, can realize large-scale stepless speed regulation, automatically realize overload protection in conjunction with state-of-the-art technology automaticity height and manipulation control, but adopt mineral oil as working medium relative movement face lubricating by oneself, long service life.Along with improving constantly of hydraulic machinery automaticity, the hydraulic element number of applications sharply increases, miniaturization of components, the system integration development trend that is inevitable.Particularly hydraulics and sensory technique, the close combination of microelectronic technology, many electrical integrated components and parts of machine (liquid) such as electrohydraulic proportional control valve, digital valve, electro-hydraulic servo cylinder have appearred, make hydraulics at high pressure, at a high speed, the aspect such as high-power, Highgrade integration obtained significant development.Undoubtedly, the computer-aided design of hydraulic element and hydraulic system, computer-aided experiment and real time computer control also are the developing direction of current hydraulics.But the hydraulic system assembly of existing this product exists a lot of problems from operating method, working method, numerous and diverse different amount such as structure, and this causes work poor efficiency, heavier, the high expensive of weight of equipment.
Summary of the invention
The purpose of this invention is to provide and a kind ofly be conducive to simplify oil circuit, can make reliable in action, be conducive to improve conversion positional accuracy, possess the auxiliary hydraulic system pressure reducing circuit connecting means that improves the hydraulic test bench of equipment operation ability, to solve many deficiencies of prior art.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of hydraulic system pressure reducing circuit connecting means of hydraulic test bench mainly is comprised of following:
At first, at Fixed pressure reducing valve of peripheral branch road series connection of the low pressure pump of hydraulic system oil circuit, simultaneously, second reduction valve of access in parallel on the branch road that Fixed pressure reducing valve is relative therewith;
⑵ regulate this second reduction valve makes a certain branch road of system have the stable operation pressure that is lower than the system pressure setting, and this branch road is connected with work clamping, the lubricated oil circuit control that reaches hydraulic system of guide rail;
⑶ be positioned at the second reduction valve one side an one-way valve be set in pressure reducing circuit, when working connection pressure is lower than the setting of Fixed pressure reducing valve, can prevent that cylinder pressure is disturbed by it.
The beneficial effect of the hydraulic system pressure reducing circuit connecting means of hydraulic test bench of the present invention is: not only simplified oil circuit, and made reliable in action, the positional accuracy of conversion is also higher, can obtain enough changing-over precision; Simultaneously, be conducive to arrange easily and flexibly as required, can improve the operation controllability, reduce labor intensity.
Embodiment
The hydraulic system pressure reducing circuit connecting means of the described hydraulic test bench of the embodiment of the invention, its key step comprises:
At first, at Fixed pressure reducing valve of peripheral branch road series connection of the low pressure pump of hydraulic system oil circuit, simultaneously, second reduction valve of access in parallel on the branch road that Fixed pressure reducing valve is relative therewith;
⑵ regulate this second reduction valve makes a certain branch road of system have the stable operation pressure that is lower than the system pressure setting, and this branch road is connected with work clamping, the lubricated oil circuit control that reaches hydraulic system of guide rail;
⑶ be positioned at the second reduction valve one side an one-way valve be set in pressure reducing circuit, when working connection pressure is lower than the setting of Fixed pressure reducing valve, can prevent that cylinder pressure is disturbed by it.
Claims (1)
1. the hydraulic system pressure reducing circuit connecting means of a hydraulic test bench is characterized in that, mainly is comprised of following steps:
At first, at Fixed pressure reducing valve of peripheral branch road series connection of the low pressure pump of hydraulic system oil circuit, simultaneously, second reduction valve of access in parallel on the branch road that Fixed pressure reducing valve is relative therewith;
⑵ regulate this second reduction valve makes a certain branch road of system have the stable operation pressure that is lower than the system pressure setting, and this branch road is connected with work clamping, the lubricated oil circuit control that reaches hydraulic system of guide rail;
⑶ be positioned at the second reduction valve one side an one-way valve be set in pressure reducing circuit, when working connection pressure is lower than the setting of Fixed pressure reducing valve, can prevent that cylinder pressure is disturbed by it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104673961A CN102927090A (en) | 2012-11-19 | 2012-11-19 | Connecting method of hydraulic system pressure reducing loop of hydraulic test bench |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104673961A CN102927090A (en) | 2012-11-19 | 2012-11-19 | Connecting method of hydraulic system pressure reducing loop of hydraulic test bench |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102927090A true CN102927090A (en) | 2013-02-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104673961A Pending CN102927090A (en) | 2012-11-19 | 2012-11-19 | Connecting method of hydraulic system pressure reducing loop of hydraulic test bench |
Country Status (1)
| Country | Link |
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| CN (1) | CN102927090A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219004A (en) * | 1995-02-08 | 1996-08-27 | Hitachi Constr Mach Co Ltd | Capacity control device of hydraulic rotary machine |
| JP4271105B2 (en) * | 2004-08-10 | 2009-06-03 | カヤバ工業株式会社 | Industrial machinery control circuits |
| CN101532564A (en) * | 2009-04-05 | 2009-09-16 | 徐州工程机械科技股份有限公司 | Full flow electrohydraulic control system for construction machinery gear box |
| CN201446693U (en) * | 2009-05-11 | 2010-05-05 | 张家港市普天机械制造有限公司 | Hydraulic drive device of hollow blowing forming machine |
| CN202147278U (en) * | 2011-05-30 | 2012-02-22 | 山东理工大学 | Fire-fighting robot arm hydraulic circuit system |
| CN102628731A (en) * | 2012-04-13 | 2012-08-08 | 欧进萍 | Steady air suction/blowing control device of structural wall surface ambient flow field |
-
2012
- 2012-11-19 CN CN2012104673961A patent/CN102927090A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219004A (en) * | 1995-02-08 | 1996-08-27 | Hitachi Constr Mach Co Ltd | Capacity control device of hydraulic rotary machine |
| JP4271105B2 (en) * | 2004-08-10 | 2009-06-03 | カヤバ工業株式会社 | Industrial machinery control circuits |
| CN101532564A (en) * | 2009-04-05 | 2009-09-16 | 徐州工程机械科技股份有限公司 | Full flow electrohydraulic control system for construction machinery gear box |
| CN201446693U (en) * | 2009-05-11 | 2010-05-05 | 张家港市普天机械制造有限公司 | Hydraulic drive device of hollow blowing forming machine |
| CN202147278U (en) * | 2011-05-30 | 2012-02-22 | 山东理工大学 | Fire-fighting robot arm hydraulic circuit system |
| CN102628731A (en) * | 2012-04-13 | 2012-08-08 | 欧进萍 | Steady air suction/blowing control device of structural wall surface ambient flow field |
Non-Patent Citations (2)
| Title |
|---|
| 王焕菊等主编: "《液压与气压传动》", 31 March 2007, article "《液压与气压传动》", pages: 197,201-202 * |
| 赵新泽主编: "《液压传动基础》", 31 August 2012, article "《液压传动基础》", pages: 98-100 * |
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Application publication date: 20130213 |