CN106801690B - A kind of hydraulic system for the test of hydraulic pump driving system loads - Google Patents
A kind of hydraulic system for the test of hydraulic pump driving system loads Download PDFInfo
- Publication number
- CN106801690B CN106801690B CN201710003435.5A CN201710003435A CN106801690B CN 106801690 B CN106801690 B CN 106801690B CN 201710003435 A CN201710003435 A CN 201710003435A CN 106801690 B CN106801690 B CN 106801690B
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- Prior art keywords
- valve
- hydraulic
- hydraulic pump
- oiler
- test
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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
- 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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/0416—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor with means or adapted for load sensing
-
- 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
-
- 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
- F15B21/042—Controlling the temperature of the fluid
-
- 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
- F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
- F15B2211/205—Systems with pumps
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/615—Filtering means
-
- 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
- F15B2211/60—Circuit components or control therefor
- F15B2211/62—Cooling or heating means
Landscapes
- 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)
Abstract
The present invention relates to a kind of hydraulic systems for the test of hydraulic pump driving system loads, it is characterized in that, the hydraulic system includes: hydraulic pump, overflow valve, reversal valve, hydraulic cylinder, pressure regulator valve, catch box, loading spring and electronic control module, wherein, the oiler of the hydraulic pump is connect with the oil outlet of the catch box, the oil outlet of the hydraulic pump is connect with the oiler of the overflow valve, the oil outlet of the overflow valve is connect with the oiler of the oiler of the reversal valve and the catch box respectively, the oil outlet of the reversal valve is connect with the oiler of the pressure regulator valve, two actuator ports of the reversal valve are connect with the hydraulic cylinder by two oil pockets that piston separates respectively, the oil outlet of the pressure regulator valve is connect with the oiler of the catch box, the piston of the hydraulic cylinder is connected to the loading spring, it is described Loading spring is provided with pull pressure sensor, and the electronic control module is coupled with the overflow valve, reversal valve, pressure regulator valve and pull pressure sensor.
Description
Technical field
The present invention relates to hydraulic system load test technical fields, try more particularly to for hydraulic pump driving system loads
The hydraulic system tested.
Background technique
With hydraulic system in farm machinery and engineering machinery using more and more extensive, hydraulic system load is also increasingly
Greatly, to meet the market requirement, increasing hydraulic pump mesh power will be trend；The hydraulic pump of increasing wants its transmission system
It asks increasingly harsher, changes the matching type selecting of hydraulic pump and hydraulic actuator, pass through its shadow to transmission system of analogue simulation
Sound is relatively difficult to achieve, there is no the ability for the test of hydraulic cylinder load system in currently available technology.Develop hydraulic pump driving system
Reliability test ability can not only provide data support for the matching of hydraulic pump and power train, moreover it is possible to for entire hydraulic system
Type selecting provides verification experimental verification means, to promote product competitiveness.
Examination hydraulic pump driving system now carries out durable reliability one is complete machine matching status is utilized on vehicle
Test；This method experimentation cost is high, and hydraulic pump output pressure is unable to control, and operating condition of test consistency is poor.Another is to utilize
Pipe throttle builds the pressure mode, controls hydraulic pump output pressure, reaches examination purpose；This method makes pipe throttle build the pressure temperature rise
Height influences system operation reliability；Larger with vehicle actual operating mode difference, simulating examination is undesirable.
Summary of the invention
The purpose of the present invention is what is be achieved through the following technical solutions.
The present invention proposes a kind of hydraulic system for the test of hydraulic pump driving system loads, which includes: liquid
Press pump, overflow valve, reversal valve, hydraulic cylinder, pressure regulator valve, catch box, loading spring and electronic control module, wherein the hydraulic pump
Oiler is connect with the oil outlet of the catch box, and the oil outlet of the hydraulic pump is connect with the oiler of the overflow valve, institute
The oil outlet for stating overflow valve is connect with the oiler of the oiler of the reversal valve and the catch box respectively, the reversal valve
Oil outlet connect with the oiler of the pressure regulator valve, two actuator ports of the reversal valve are logical with the hydraulic cylinder respectively
Two oil pockets connection that piston separates is crossed, the oil outlet of the pressure regulator valve is connect with the oiler of the catch box, the liquid
The piston of cylinder pressure is connected to the loading spring, and the loading spring is provided with pull pressure sensor, the electronic control module and institute
State overflow valve, reversal valve, pressure regulator valve and pull pressure sensor coupling.
Further, the reversal valve is three position four-way directional control valve.
Further, the reversal valve is two-position four way change valve.
Further, the overflow valve is pilot-operated proportional relief valve.
Further, be additionally provided with relief valve between the hydraulic pump and the overflow valve, the relief valve it is fuel-displaced
Mouth is respectively connected to the oiler of the overflow valve and the oiler of the catch box.
Further, it is provided with temperature sensor on the pipeline between the hydraulic pump and the relief valve and pressure passes
Sensor, the temperature sensor and the pressure sensor are coupled with the electronic control module.
Further, heat exchanger is additionally provided between the pressure regulator valve and the catch box.
Further, filter is additionally provided between the catch box and the hydraulic pump.
Further, it is additionally provided with thermostat valve between the pressure regulator valve and the heat exchanger, passes through institute for controlling
The fluid flow of heat exchanger is stated, the thermostat valve is coupled with the electronic control module.
In addition, the hydraulic pump is controlled by driven by engine and by the revolving speed of the engine.
The present invention has the advantages that
The configuration of the present invention is simple, versatile, low manufacture cost use in which can be convenient according to the place of test is mobile,
Hydraulic pump load test can be carried out in complete machine or vehicle.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows the schematic diagram of the hydraulic system of embodiment according to the present invention.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing
The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here
The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs
The range opened is fully disclosed to those skilled in the art.
According to a preferred embodiment of the present invention, a kind of liquid for the test of hydraulic pump driving system loads is proposed
Pressure system, as shown in Figure 1, the hydraulic system includes: hydraulic pump, relief valve, overflow valve, reversal valve, hydraulic cylinder, pressure regulator valve, heat
Exchanger, catch box, filter, loading spring (its complex spring for for example taking two kinds of spring assemblies to assemble) and automatically controlled mould
Block.Wherein, hydraulic pump is controlled by driven by engine and by the revolving speed of the engine.Specific arrangement is liquid
The oiler of the oil outlet of press pump and relief valve connects, the oil outlet of relief valve respectively with the oiler of overflow valve and thermostat valve
Oiler connection, the oil outlet of overflow valve connect with the oiler of the oiler of reversal valve and thermostat valve respectively, reversal valve
Oil outlet connect with the oiler of the pressure regulator valve, two actuator ports of reversal valve pass through work with the hydraulic cylinder respectively
The two oil pockets connection separated is filled in, the oil outlet of pressure regulator valve and the oiler of thermostat valve connect, the oil outlet difference of thermostat valve
It is connect with heat exchanger and catch box, which can flow through heat exchanger for adjusting by electric control module controls
The flow of hydraulic oil, the oil outlet of heat exchanger and the oiler of catch box connect, and the hydraulic oil in catch box can pass through
Filter flow to hydraulic pump；The piston of hydraulic cylinder is connected to loading spring, which is provided with pull pressure sensor (that is, Fig. 1
The sensor on middle right side)；In addition, electronic control module is coupled with overflow valve, reversal valve, pressure regulator valve and pull pressure sensor, so as to
It is enough that overflow valve, reversal valve and pressure regulator valve are controlled accordingly according to specific operating condition, and pull pressure sensor can be passed through
Monitor pulling force or pressure under various operating conditions in real time.Preferably, it is provided with liquidometer in catch box, the liquidometer and automatically controlled mould
Block coupling, so as to monitor the liquid level of the hydraulic oil in catch box in real time.Also it is preferred that hydraulic pump and relief valve it
Between pipeline in be provided with the temperature sensor (that is, warming in Fig. 1) coupled with electronic control module and pressure sensor (that is, Fig. 1
In pressure sensitivity), so as to monitor the temperature and pressure of the hydraulic oil pumped out by hydraulic pump in real time.
Specifically, which is carried by the band of the overflow valve regulation hydraulic pump output hydraulic pressure oil by electric control module controls
Operating pressure, reversal valve is to draw in the state connected with hydraulic cylinder to apply to spring by electric control module controls at this time
Power or pressure, and the numerical value of specific spring force can be read by the pull pressure sensor being set in spring, pass through tune
The revolving speed for saving engine, can simulate full-loading condition；In addition, change the link position of reversal valve by electronic control module,
So that hydraulic oil is flowed directly to pressure regulator valve by the reversal valve, i.e., bypass hydraulic cylinder, and passes through electric control module controls pressure regulator valve
The unloaded pressure of setting system, thus simulation no-load operating condition.
Preferably, reversal valve is three position four-way directional control valve.Therefore it can be commutated by the 3-position 4-way under loading condition
Two kinds of link positions of valve make hydraulic oil via different paths by hydraulic cylinder, so that loading spring difference under tension and pressure
The effect of power.In addition, overflow valve is preferably pilot-operated proportional relief valve.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim
Subject to enclosing.
Claims (10)
1. a kind of hydraulic system for the test of hydraulic pump driving system loads, which is characterized in that the hydraulic system includes: hydraulic
Pump, overflow valve, reversal valve, hydraulic cylinder, pressure regulator valve, catch box, loading spring and electronic control module, wherein the hydraulic pump enters
Hydraulic fluid port is connect with the oil outlet of the catch box, and the oil outlet of the hydraulic pump is connect with the oiler of the overflow valve, described
The oil outlet of overflow valve is connect with the oiler of the oiler of the reversal valve and the catch box respectively, the reversal valve
Oil outlet is connect with the oiler of the pressure regulator valve, and two actuator ports of the reversal valve pass through with the hydraulic cylinder respectively
Two oil pockets connection that piston separates, the oil outlet of the pressure regulator valve is connect with the oiler of the catch box, described hydraulic
The piston of cylinder is connected to the loading spring, and the loading spring is provided with pull pressure sensor, the electronic control module with it is described
Overflow valve, reversal valve, pressure regulator valve and pull pressure sensor coupling, enable the electronic control module to control the reversal valve and institute
State hydraulic cylinder connection, and the loaded work piece pressure for passing through hydraulic system described in overflow valve regulation described in the electric control module controls；
And the electronic control module can change the link position of the reversal valve, and hydraulic oil is made to be flowed directly to institute by the reversal valve
Pressure regulator valve is stated to make the reversal valve directly connect with the pressure regulator valve, and passes through pressure regulator valve described in the electric control module controls
Adjust the unloaded operation pressure of the hydraulic system.
2. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that described
Reversal valve is three position four-way directional control valve.
3. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that described
Reversal valve is two-position four way change valve.
4. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that described
Overflow valve is pilot-operated proportional relief valve.
5. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that in institute
It states and is additionally provided with relief valve between hydraulic pump and the overflow valve, the oil outlet of the relief valve is respectively connected to the overflow valve
Oiler and the catch box oiler.
6. the hydraulic system according to claim 5 for the test of hydraulic pump driving system loads, which is characterized in that in institute
State and be provided with temperature sensor and pressure sensor on the pipeline between hydraulic pump and the relief valve, the temperature sensor and
The pressure sensor is coupled with the electronic control module.
7. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that in institute
It states and is additionally provided with heat exchanger between pressure regulator valve and the catch box.
8. the hydraulic system according to claim 1 for the test of hydraulic pump driving system loads, which is characterized in that in institute
It states and is additionally provided with filter between catch box and the hydraulic pump.
9. the hydraulic system according to claim 7 for the test of hydraulic pump driving system loads, which is characterized in that in institute
It states and is additionally provided with thermostat valve between pressure regulator valve and the heat exchanger, for controlling the fluid flow for passing through the heat exchanger,
The thermostat valve is coupled with the electronic control module.
10. the hydraulic system according to any one of the preceding claims for the test of hydraulic pump driving system loads,
It is characterized in that, the hydraulic pump is controlled by driven by engine and by the revolving speed of the engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003435.5A CN106801690B (en) | 2017-01-04 | 2017-01-04 | A kind of hydraulic system for the test of hydraulic pump driving system loads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710003435.5A CN106801690B (en) | 2017-01-04 | 2017-01-04 | A kind of hydraulic system for the test of hydraulic pump driving system loads |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106801690A CN106801690A (en) | 2017-06-06 |
| CN106801690B true CN106801690B (en) | 2019-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710003435.5A Active CN106801690B (en) | 2017-01-04 | 2017-01-04 | A kind of hydraulic system for the test of hydraulic pump driving system loads |
Country Status (1)
| Country | Link |
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| CN (1) | CN106801690B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107575432B (en) * | 2017-09-29 | 2019-07-12 | 北京乐冶液压气动设备技术有限公司 | Hydraulic loading device with a variety of loading force output modes |
| CN109187200A (en) * | 2018-10-13 | 2019-01-11 | 西安航天动力测控技术研究所 | A kind of side crops industry manual loading experimental rig for test of static strength |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19929431A1 (en) * | 1999-06-26 | 2000-12-28 | Mannesmann Sachs Ag | Hydraulic control drive, e.g. for clutches, gearboxes, has arrangement for detecting level of fluid in reservoir container from duration of time for which pump is switched on |
| EP1388673A2 (en) * | 2002-08-07 | 2004-02-11 | Shikoku Kakoki Co., Ltd. | Drive device for packaging machine |
| CN1632503A (en) * | 2004-12-09 | 2005-06-29 | 洛阳轴研科技股份有限公司 | Simulation test loading device for automobile wheel hub bearing unit |
| CN200965501Y (en) * | 2006-10-16 | 2007-10-24 | 北京联合大学 | Hydraulic universal tester with the active loading at both ends of test piece |
| CN102269671A (en) * | 2011-04-28 | 2011-12-07 | 上海交通大学 | Electro-hydraulic loading system of thin-film biaxial tensile testing machine |
| CN204043900U (en) * | 2014-08-12 | 2014-12-24 | 天津格特斯检测设备技术开发有限公司 | A kind of valve hydraulic actuator pilot system |
| CN106015139A (en) * | 2016-07-20 | 2016-10-12 | 浙江大学 | Tension and compression testing machine hydraulic loading system adopting differential control of proportional overflow valves |
-
2017
- 2017-01-04 CN CN201710003435.5A patent/CN106801690B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19929431A1 (en) * | 1999-06-26 | 2000-12-28 | Mannesmann Sachs Ag | Hydraulic control drive, e.g. for clutches, gearboxes, has arrangement for detecting level of fluid in reservoir container from duration of time for which pump is switched on |
| EP1388673A2 (en) * | 2002-08-07 | 2004-02-11 | Shikoku Kakoki Co., Ltd. | Drive device for packaging machine |
| CN1632503A (en) * | 2004-12-09 | 2005-06-29 | 洛阳轴研科技股份有限公司 | Simulation test loading device for automobile wheel hub bearing unit |
| CN200965501Y (en) * | 2006-10-16 | 2007-10-24 | 北京联合大学 | Hydraulic universal tester with the active loading at both ends of test piece |
| CN102269671A (en) * | 2011-04-28 | 2011-12-07 | 上海交通大学 | Electro-hydraulic loading system of thin-film biaxial tensile testing machine |
| CN204043900U (en) * | 2014-08-12 | 2014-12-24 | 天津格特斯检测设备技术开发有限公司 | A kind of valve hydraulic actuator pilot system |
| CN106015139A (en) * | 2016-07-20 | 2016-10-12 | 浙江大学 | Tension and compression testing machine hydraulic loading system adopting differential control of proportional overflow valves |
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| Publication number | Publication date |
|---|---|
| CN106801690A (en) | 2017-06-06 |
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