CN113323947A - Testing device and method for hydraulic proportional solenoid valve of engineering machinery - Google Patents
Testing device and method for hydraulic proportional solenoid valve of engineering machinery Download PDFInfo
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- CN113323947A CN113323947A CN202110620517.0A CN202110620517A CN113323947A CN 113323947 A CN113323947 A CN 113323947A CN 202110620517 A CN202110620517 A CN 202110620517A CN 113323947 A CN113323947 A CN 113323947A
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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
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
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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
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
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Abstract
The invention discloses a device and a method for testing a hydraulic proportional solenoid valve of engineering machinery, which are used for testing the hydraulic proportional solenoid valve. The test hydraulic proportional solenoid valve has multiple working conditions, and the multiple working conditions correspond to multiple working condition parameters; the test device comprises: the system comprises an industrial control computer, a driving system, an oil supply system, an oil outlet adjusting system, an air supply system and an air outlet processing system; the industrial control computer is configured to control the gas supply system and the gas outlet processing system to be switched off when the oil supply system and the oil outlet adjusting system are switched on, and to switch off the oil supply system and the oil outlet adjusting system when the gas supply system and the gas outlet processing system are switched on. The invention realizes the test of the hydraulic proportional solenoid valve with various structures and performances, plays an auxiliary role in research and development and test of the hydraulic proportional solenoid valve of the engineering machinery, accelerates the research and development process, can clean and environmentally treat residual test oil left in the proportional solenoid valve to be tested after the test, and meets the requirement of low emission.
Description
Technical Field
The invention relates to the technical field of engineering machinery part testing, in particular to a device and a method for testing a hydraulic proportional solenoid valve of engineering machinery.
Background
The engineering hydraulic system is a key component of engineering machinery, along with the development and improvement of electronic control application technology, the engineering machinery is electronized, the automation degree is higher and higher, various electro-hydraulic electronic control components are more and more, and a hydraulic proportional solenoid valve is one of key control components. The technical level of the current infrastructure engineering machinery in China is greatly improved and the market demand is required, originally, the hydraulic electric control proportional solenoid valve which basically depends on the imported foreign advanced countries is developed by a plurality of related research and development departments in China, but the hydraulic electric control proportional solenoid valve has high technical requirements on various parts and is large in processing difficulty, performance test must be carried out after assembly is completed, a test bed capable of carrying out performance test on hydraulic proportional solenoid valves with various structures and performances does not exist in China at present, the research and development and the test of the hydraulic proportional solenoid valve can be limited, the research and development progress is slowed down, the current test is stopped at the stage of test completion, test oil remained in the tested proportional solenoid valve after the test is not cleaned or directly recycled, and the great adverse effect on environmental protection is generated.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a device and a method for testing a hydraulic proportional solenoid valve of engineering machinery, which are used for testing the hydraulic proportional solenoid valves with various structures and performances, assisting the research and development and the test of the hydraulic proportional solenoid valve of the engineering machinery, accelerating the research and development process, and simultaneously cleaning and environmentally-friendly treating residual oil remained in the tested proportional solenoid valve after the test, so that the device and the method meet the requirement of low emission.
In order to achieve the technical purpose, the invention adopts the following technical scheme: a testing device for a hydraulic proportional solenoid valve of engineering machinery is used for testing the hydraulic proportional solenoid valve, wherein the testing hydraulic proportional solenoid valve has multiple working conditions, and the multiple working conditions correspond to multiple working condition parameters;
the test device includes:
the system comprises an industrial control computer, a driving system, an oil supply system, an oil outlet adjusting system, an air supply system and an air outlet processing system;
the industrial control computer is configured to receive the multiple working condition parameters of the hydraulic proportional solenoid valve, collect performance data of the hydraulic proportional solenoid valve under each working condition, and complete the test of the hydraulic proportional solenoid valve according to the performance data;
the driving system is configured to provide driving voltage and driving current which work under various working conditions to different hydraulic proportional solenoid valves;
the oil supply system is configured to supply oil and control the oil inlet pressure of the hydraulic proportional solenoid valve according to the multiple working condition parameters;
the oil outlet regulating system is configured to control the output oil pressure and the output flow of the hydraulic proportional solenoid valve according to the multiple working condition parameters;
the air supply system is configured to provide compressed air for cleaning into the hydraulic proportional solenoid valve after testing;
the outlet air treatment system is configured to treat air flowing through the hydraulic proportional solenoid valve;
the industrial control computer is configured to control the oil supply system with when the governing system that produces oil switches on, cut off the air supply system with the processing system that gives vent to anger, and, control the air supply system with when the processing system that gives vent to anger switches on, cut off the oil supply system with the governing system that produces oil.
Furthermore, the industrial control computer is electrically connected with an electronic power driving board, a voltage sensor and a current sensor are configured on the electronic power driving board, and the industrial control computer collects the driving voltage and the driving current of the hydraulic proportional solenoid valve under each working condition through the voltage sensor and the current sensor.
Further, the oil supply system comprises a high-pressure oil pressure transmitter, an oil inlet pressure control valve and an oil supply electromagnetic valve, wherein the oil inlet pressure control valve is used for controlling the oil inlet pressure; the high-pressure oil pressure transmitter collects the oil inlet pressure and sends the oil inlet pressure to the electronic power drive plate, wherein the electronic power drive plate can send the oil inlet pressure to the industrial control computer; and the oil supply electromagnetic valve cuts off or connects the oil supply system loop.
Further, the oil outlet adjusting system comprises a pressure transmitter, a flow transmitter and an electric control proportional flow electromagnetic valve, wherein the pressure transmitter and the flow transmitter respectively collect the output oil pressure and the output flow and send the output oil pressure and the output flow to the electronic power drive plate, the electronic power drive plate controls the drive voltage and the drive current according to the electric control proportional flow electromagnetic valve, and the electronic power drive plate can send the output oil pressure and the output flow to the industrial control computer.
Further, the air supply system includes air feed compressor, air overflow valve voltage regulator and air feed pressure transmitter, the air feed compressor provides inlet pressure for compressed air, air overflow valve voltage regulator control inlet pressure, air feed pressure transmitter gathers inlet pressure and send to the electronic power drive plate, wherein, the electronic power drive plate can with inlet pressure send to the industrial control computer.
Furthermore, the gas outlet treatment system comprises a gas outlet electric control stop valve and an oil-gas separator, the gas outlet electric control stop valve can be connected with or cut off the gas outlet treatment system loop, and the oil-gas separator can receive oil-gas mixed gas and separate the gas.
Further, the test bench is also included; the test bench is provided with an upper layer and a lower layer; the oil supply system, the oil outlet adjusting system, the gas supply system and the gas outlet processing system are all arranged on the lower layer; a base is fixed on the upper layer, an installation module is fixed on the base, and the hydraulic proportional solenoid valve can be installed on the installation module; the oil-gas separator is characterized in that a wind collecting cover is arranged at the top of the upper layer, an exhaust fan is arranged outside the upper layer, the wind collecting cover is connected with the exhaust fan, and a gas outlet of the oil-gas separator is connected to the exhaust fan.
A test method of a hydraulic proportional solenoid valve comprises the following steps:
after the test is started, the hydraulic proportional solenoid valve is installed and fastened on the installation module;
the test device is powered on, the industrial control computer is started, the working software of the industrial control computer and the working software of the electronic power drive board are initialized, a test operator selects a driving working module matched with the hydraulic proportional solenoid valve on the industrial control computer through man-machine interaction, various working condition parameters required by the test are input, the working temperature of the test oil is set, the driving system, the oil supply system and the oil outlet adjusting system are started after the temperature of the test oil reaches the set temperature, the hydraulic proportional solenoid valve enters the working state under the appointed working condition, the electronic power drive board measures the oil inlet pressure through the high-pressure oil pressure transmitter at the moment, the output oil pressure is measured through the pressure transmitter, and the output flow is measured through the flow transmitter, then, the driving current of the electric control proportional flow electromagnetic valve is controlled in a closed loop mode, so that the output oil pressure and the output flow meet the current test working condition, and a test result is obtained;
after the test work is finished, clearing a residual test oil working module of the hydraulic proportional solenoid valve by calling the industrial control computer, and changing the original oil way of the hydraulic proportional solenoid valve into a compressed air way by automatically stopping the oil supply solenoid valve of the oil supply system loop, connecting an air supply stop valve of the air supply system loop, stopping an oil outlet stop valve of the oil outlet adjusting system loop and connecting an air outlet electric control stop valve of the air outlet processing system loop;
and after the cleaning work is finished, the hydraulic proportional solenoid valve and the installation module are disassembled, the test device is powered off, and the test is finished.
Further, the method also comprises the following substeps: the air supply system comprises an air supply system loop, an air overflow valve, an air pressure transmitter, an electronic power drive plate and an industrial control computer, wherein the air supply system loop is connected with the electronic power drive plate, the air supply system loop is connected with the industrial control computer, and the air supply system loop is connected with the industrial control computer.
Further, the method also comprises the following substeps: compressed gas flows through the hydraulic proportional solenoid valve to form oil-gas mixed gas after testing, the oil-gas mixed gas enters the oil-gas separator through the air outlet electric control stop valve, the oil-gas separator enables separated test oil to flow back to a test oil tank, and separated air is discharged back to the atmosphere through the exhaust fan.
In conclusion, the invention achieves the following technical effects:
the invention is used for testing a hydraulic proportional solenoid valve, and comprises: the oil supply system comprises a driving system, an industrial control computer, an oil supply system and an oil outlet adjusting system, wherein the driving system, the industrial control computer, the oil supply system and the oil outlet adjusting system are respectively arranged on a test bench of the test device; the driving system is used for outputting driving voltage and driving current which can enable various hydraulic proportional solenoid valves to work under various working conditions through an industrial computer and an electronic power driving board; the industrial control computer is used for receiving working condition parameters corresponding to each working condition of the hydraulic proportional solenoid valve, acquiring performance data of the hydraulic proportional solenoid valve under each working condition, and completing the test of the hydraulic proportional solenoid valve according to the performance data; the performance data comprises the driving working voltage, the working current, the input oil pressure, the output oil pressure and the output flow of the hydraulic proportional solenoid valve; the oil supply system is used for controlling the oil inlet pressure of the hydraulic proportional solenoid valve according to the working condition parameters corresponding to each working condition; the oil outlet regulating system is used for controlling the output flow and the output oil pressure of the hydraulic proportional solenoid valve according to the working condition parameters corresponding to each working condition;
the oil supply system of the testing device can control oil inlet pressure according to working condition parameters of the tested hydraulic proportional solenoid valve, the oil outlet adjusting system can control output oil pressure and output flow of the tested proportional solenoid valve according to the working condition parameters of the tested hydraulic proportional solenoid valve, the industrial control computer collects performance data of the tested hydraulic proportional solenoid valve under each working condition, and testing of the proportional solenoid valve is completed according to the performance data; the air supply and air outlet processing system is used for providing compressed air through the air supply system after the hydraulic proportional solenoid valve finishes test work, cleaning test residual oil in the measured proportional solenoid valve, separating the oil-gas mixed gas with oil drops and spray from the air outlet processing system through the oil-gas separator to obtain test oil, flowing back to the test oil tank, and exhausting the filtered air back to the atmosphere through the air extractor; the test on the hydraulic proportional solenoid valve of the engineering machinery with various structures and performances can be realized, the research and development and the test on various oil pressure proportional solenoid valves of the engineering machinery are assisted, and the research and development process is accelerated;
the invention can separate the tested test oil, recycle the separated test oil, and discharge the separated air, thereby realizing environmental protection.
Drawings
FIG. 1 is a schematic block diagram of a testing device for a hydraulic proportional solenoid valve of an engineering machine, provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a hydraulic system of a testing device for a hydraulic proportional solenoid valve of an engineering machine;
fig. 3 is a structural layout diagram of a testing device for a hydraulic proportional solenoid valve of an engineering machine.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Example (b):
the utility model provides an engineering machine tool hydraulic pressure proportion solenoid valve testing arrangement for test hydraulic pressure proportion solenoid valve 100, wherein, test hydraulic pressure proportion solenoid valve 100 possesses multiple operating mode, and multiple operating mode corresponds multiple operating mode parameter.
The test device comprises: the system comprises an industrial control computer 1, a driving system 2, an oil supply system 3, an oil outlet adjusting system 5, an air supply system 4 and an air outlet processing system 6.
The industrial control computer 1 is configured to receive various working condition parameters of the hydraulic proportional solenoid valve 100, collect performance data of the hydraulic proportional solenoid valve 100 under each working condition, and complete a test on the hydraulic proportional solenoid valve 100 according to the performance data. The industrial control computer 1 is configured to turn off the gas supply system 4 and the gas discharge processing system 6 when controlling the oil supply system 3 and the gas discharge adjusting system 5 to be turned on, and turn off the oil supply system 3 and the gas discharge adjusting system 5 when controlling the gas supply system 4 and the gas discharge processing system 6 to be turned on.
When the hydraulic proportional solenoid valve 100 is designed, corresponding working condition parameters exist for each working condition, the industrial control computer 1 receives the working condition parameters corresponding to each working condition, controls the hydraulic proportional solenoid valve 100 to operate under each working condition parameter, collects performance data of the operation of the hydraulic proportional solenoid valve 100 under each working condition, judges whether the performance data reaches the designed performance, and can finish the test of the hydraulic proportional solenoid valve according to the performance data.
In the embodiment of the present application, the performance data includes an oil inlet pressure, an oil output flow of the hydraulic proportional solenoid valve 100, and a working voltage and a working current for driving the hydraulic proportional solenoid valve 100. After acquiring the performance data, the industrial control computer 1 may further plot the performance data into data curves, such as a voltage-flow curve, a voltage-oil pressure curve, a driving trigger time-flow curve, a driving trigger time-oil pressure curve, and the like, where the curves are used to visually represent various working performances and dynamic performances of the hydraulic proportional solenoid valve.
The industrial control computer 1 is electrically connected with an electronic power driving board 40, a voltage sensor (not shown) and a current sensor (not shown) are arranged on the electronic power driving board 40, and the industrial control computer 1 collects the driving voltage and the driving current of the hydraulic proportional solenoid valve 100 under each working condition through the voltage sensor and the current sensor.
The drive system 2 is configured to provide drive voltages and drive currents operating under various conditions to the various hydraulic proportional solenoid valves 100 through the industrial control computer 1 and the electronic power drive board 40.
The driving system comprises a computer output board card and an electronic power driving board 40.
In the embodiment of the present application, as shown in fig. 2, a schematic flow chart of the whole test is shown, in which the test of various solenoid valves, such as a proportional pressure regulating solenoid valve 14, a proportional flow solenoid valve 15, and a reversing valve 17, are shown, and the solenoid valves are all included in the scope of the hydraulic proportional solenoid valve 100. The driving system 2 enables the oil pressure of the oil inlet of the proportional solenoid valve to be measured to work in a set working oil pressure state by adjusting the hydraulic overflow valve pressure regulator 35; the driving system provides working voltage and working current for the electric control proportional electromagnetic flow valve 24 of the oil outlet adjusting system 5, so that an oil way system of the whole test bed reaches a standard specified test state; the driving system provides driving voltage and driving current for the proportional flow electromagnetic valve 15 to be measured, so that the proportional flow electromagnetic valve works in a set working oil output state; the driving system provides driving voltage and driving current for the proportional pressure regulating electromagnetic valve 14 to be tested, so that the proportional pressure regulating electromagnetic valve works in different oil outlet pressure states under different testing working conditions; the driving system also provides working voltage for the tested reversing valve 17, so that the tested reversing valve works normally to carry out dynamic performance test. The driving system applies the working voltage to the proportional pressure regulating electromagnetic valve 14 as 12V or 24V DC, and increases or decreases the PWM driving current by 0-100%, and applies the working voltage to the proportional flow electromagnetic valve 15 as 12V or 24V DC, and increases or decreases the PWM driving current by 0-100%.
The oil supply system 3 is configured to supply oil and control the oil feed pressure of the hydraulic proportional solenoid valve 100 according to various operating condition parameters.
As shown in fig. 2, the oil supply system 3 includes a high pressure oil pressure transmitter 12, an oil inlet pressure control valve 35, and an oil supply solenoid valve 13, where the oil inlet pressure control valve 35 is used to control oil inlet pressure; the high-pressure oil pressure transmitter 12 collects oil inlet pressure and transmits the oil inlet pressure to the electronic power drive board 40, wherein the electronic power drive board 40 can transmit the oil inlet pressure to the industrial control computer 1; the oil supply solenoid valve 13 cuts off or opens the oil supply system 3 circuit.
In this embodiment of the present application, the oil supply system 3 adjusts the hydraulic overflow valve pressure regulator 35 according to the working condition parameters corresponding to each working condition of the measured hydraulic proportional solenoid valve 100 sent by the industrial control computer 1, and controls the oil inlet pressure of the measured hydraulic proportional solenoid valve 100 to match the oil inlet pressure in the working condition parameters corresponding to each working condition.
The oil supply system 3 further comprises a test oil tank 30, an automatic temperature controller 31, a test oil filter 32 and an electric hydraulic pump 33, wherein the electric hydraulic pump 33 pumps out the test oil in the test oil tank 30, the test oil is adjusted to a proper temperature through the automatic temperature controller 31, the temperature of the test oil is ensured to be at the temperature of the test oil specified by the standard, the test oil is filtered into clean test oil through the test oil filter 32, and the test oil is supplied to the hydraulic proportional solenoid valve 100. The automatic temperature controller 31 is a temperature control system for professional production, and can set the test oil temperature at the specified oil temperature for the test.
The oil supply system 3 further comprises an energy accumulator 11, and the energy accumulator, the high-pressure oil pressure transmitter 12 and the oil inlet pressure control valve 35 jointly form a pressure adjusting and pressure collecting loop of the oil supply system 3, so that the oil inlet pressure can be timely adjusted and the oil inlet pressure can be timely collected.
The oil supply system 3 further comprises a first pipeline 34 and a second pipeline 16, the accumulator 11, the high-pressure oil pressure transmitter 12 and the oil inlet pressure control valve 35 are installed on the first pipeline 34, and the second pipeline 16 inputs the test oil with the over-pressure adjusted into the hydraulic proportional solenoid valve 100.
The oil supply system is a test oil supply system for supplying oil to the hydraulic proportional solenoid valve 100, the oil inlet pressure is adjusted by the oil inlet pressure control valve 35 to ensure that the oil inlet pressure is the oil inlet pressure specified in the working condition parameters corresponding to each working condition of the measured hydraulic proportional solenoid valve 100, and the oil inlet pressure transmitter 12 is used for monitoring the oil inlet pressure of the hydraulic proportional solenoid valve.
The test device of hydraulic pressure proportion solenoid valve that this application embodiment provided, oil feeding system carries out the pump oil by industrial control computer 1 control electric hydraulic pump 33, and oil feed pressure transmitter 12 monitors oil feed pressure, reaches the oil feed pressure requirement of hydraulic pressure proportion solenoid valve in the operating mode parameter under different operating modes through adjustment oil feed pressure control valve 35. The working flow of the whole test bed is controlled by an electric control hydraulic proportional flow electromagnetic valve 24 in the control system.
The oil outlet regulating system 5 is configured to control the output oil pressure and the output flow of the hydraulic proportional solenoid valve 100 according to various operating condition parameters.
The oil outlet adjusting system 5 comprises a pressure transmitter 22, a flow transmitter 23 and an electric control proportional flow solenoid valve 24, wherein the pressure transmitter 22 and the flow transmitter 23 respectively collect output oil pressure and output flow and transmit the output oil pressure and the output flow to an electronic power drive board 40, the electronic power drive board 40 controls drive voltage and drive current according to the electric control proportional flow solenoid valve 24, and the electronic power drive board 40 can transmit the output oil pressure and the output flow to the industrial control computer 1. The proportional pressure regulating solenoid valve 14, the proportional flow solenoid valve 15 and the reversing valve 17 to be measured are arranged in a high-pressure oil outlet pipe 20 and an oil return pipe 19 in the high-pressure oil path and used for discharging tested oil.
The proportional pressure regulating solenoid valve 14 is used for setting corresponding control voltage and current (PWM pulse width control on-off time) according to the working condition parameters corresponding to each working condition, and regulating the effective stroke of a plunger of the hydraulic proportional solenoid valve according to the corresponding on-off time so as to control the output oil pressure of the test oil path; the proportional flow solenoid valve 15 is configured to set a corresponding control voltage and current (PWM pulse width control on-off time) according to the operating condition parameter corresponding to each operating condition, and adjust an effective stroke of a plunger of the hydraulic proportional flow solenoid valve according to the corresponding on-off time to control the output oil flow of the test oil path.
The electronic drive board 40 is electrically connected with the proportional pressure regulating electromagnetic valve 14 and the proportional flow electromagnetic valve 15, and is used for respectively outputting working voltage and working current according to working condition parameters corresponding to each working condition to respectively control the proportional pressure regulating electromagnetic valve 14 and the proportional flow electromagnetic valve 15, so as to realize control of output oil pressure and output flow; the electronic driving board 40 is connected with the reversing valve 17, so that the electronic driving board works in the working state of the test working condition.
The electronic driving board 40 is also connected with the high-pressure oil pressure transmitter 12 to collect input oil pressure; the output oil pressure and the output flow under each working condition are collected by being connected with the oil outlet pressure transmitter 22 and the flowmeter 23, and the collected input and output oil pressures and output flows under each working condition are sent to the industrial control computer 1.
The industrial control computer 1 and the electronic drive board 40 provide drive voltage and drive current for the electric control proportional flow electromagnetic valve 24, and control the opening of the electric control proportional flow electromagnetic valve 24 according to the target working condition downloaded by the industrial control computer 1, and control the total flow of the test bed. The proportional pressure regulating solenoid valve 14 and the proportional flow solenoid valve 15 provide driving voltage and driving current, output oil pressure and output flow are controlled according to testing working conditions to carry out closed-loop control, the output oil pressure and the output flow are collected through the oil inlet pressure transmitter 12, the oil outlet pressure transmitter 22 and the flowmeter 23, the industrial control computer 1 drives the voltage sensor and the driving current sensor through the electronic driving plate 40, and performance data of the measured proportional solenoid valve under different working conditions can be tested.
In the embodiment of the application, the oil outlet adjusting system 5 receives the working condition parameters corresponding to each working condition of the hydraulic proportional solenoid valve under control sent by the industrial control computer 1, and controls the output flow and the output oil pressure to be matched with the output flow and the output oil pressure in the working condition parameters corresponding to each working condition when the output flow and the output oil pressure of the hydraulic proportional solenoid valve need to be controlled.
The oil outlet adjusting system 5 is matched with the oil supply system 3, the oil supply system 3 inputs test oil into a tested piece, and the oil outlet adjusting system 5 discharges the test oil after testing to realize testing.
After the test is accomplished, the inside residual oil after remaining of tested piece, this application utilizes gas supply system 4 and the processing system 6 discharge of giving vent to anger to handle residual oil, realizes environmental protection.
The air supply system 4 is configured to supply compressed air for cleaning into the hydraulic proportional solenoid valve 100 after the test for removing the test residual oil of the tested piece.
The air supply system 4 comprises an air supply compressor 37, an air overflow valve pressure regulator 7 and an air supply pressure transmitter 9, the air supply compressor 37 provides air inlet pressure for compressed air, the air overflow valve pressure regulator 7 controls the air inlet pressure, the air supply pressure transmitter 9 collects the air inlet pressure and sends the air inlet pressure to the electronic power drive board 40, and the electronic power drive board 40 can send the air inlet pressure to the industrial control computer 1.
The air supply system 4 also includes an air filter 36 for filtering and re-inputting air. The air supply system also comprises a compressed air pipe 8 serving as a conveying pipeline and an air supply stop valve 10 used for cutting off or connecting a loop of the air supply system 4.
The air supply system cuts off an oil supply stop valve 13 of a loop of the oil supply system 3 according to an instruction of a working module of the industrial control computer 1, is connected with an electric control stop valve 10 of the air supply system, provides compressed air with certain pressure in an oil supply pipe of the tested hydraulic proportional solenoid valve, and cleans test residual oil left in the hydraulic proportional solenoid valve after the test work is completed through air flow. The compressed air is clean compressed air which is pressurized by an electric air compressor 37 after atmospheric air is filtered by an air filter 36 and is adjusted to proper working pressure by an air relief valve pressure regulator 7. The industrial control computer 1 monitors the air supply pressure of the air compression system through the air supply pressure transmitter 9.
The outlet treatment system 6 is configured to treat air flowing through the hydraulic proportional solenoid valve 100.
As shown in fig. 2, the outlet treatment system 6 comprises an outlet electrical control stop valve 29 and an oil-gas separator 27, the outlet electrical control stop valve 29 can connect or disconnect a loop of the outlet treatment system 6, and the oil-gas separator 27 can receive and separate the gas-oil mixture. The system comprises an industrial control computer 1, an air outlet processing system 6, an oil outlet electric control stop valve 21, an air outlet electric control stop valve 29, an oil-gas mixed gas with oil drops and oil-gas spray flowing through a tested piece flows into an oil-gas separator 27 through the electric control stop valve 29, the oil-gas mixed gas with the oil drops and the oil-gas spray is separated to form test oil and flows back to a test oil tank, and filtered clean air is exhausted back to the atmosphere through an air extractor according to instructions of a working module of the industrial control computer 26.
Also includes a test bench 45; as shown in fig. 3, the test stage 45 has an upper layer and a lower layer; the oil supply system 3, the oil outlet adjusting system 5, the gas supply system 4 and the gas outlet processing system 6 are all arranged on the lower layer; a base 49 is fixed on the upper layer, an installation module 48 is fixed on the base 49, and a hydraulic proportional solenoid valve 100 can be installed on the installation module 48; the top of the upper layer is provided with a wind collecting cover 46, the outer part of the upper layer is provided with an exhaust fan 25, the wind collecting cover 46 is connected with the exhaust fan 25, and the gas outlet of the oil-gas separator 27 is connected with the exhaust fan 25.
The engineering machine tool hydraulic pressure proportional solenoid valve test bench's that this application embodiment provided work flow will be tested hydraulic pressure proportional solenoid valve installation and fastening on dedicated installation module 48 after experimental the beginning, and installation module 48 designs into a size shape and various oil intakes according to the design of this test bench, and the oil outlet, oil return passage, the standard module of complete unanimity, on the test bench desktop, installed with the special module mount pad of installation module 48 assorted installation. The test of different types and kinds of hydraulic proportional solenoid valve products, such as a proportional pressure regulating solenoid valve and a proportional flow solenoid valve, can be carried out as long as the measured proportional solenoid valve is firstly fixed on a special mounting module, then the special module provided with the measured hydraulic proportional solenoid valve is mounted on a module mounting seat of a test bed, and a power supply connecting plug is inserted into an electrical appliance socket of the measured proportional solenoid valve.
In another embodiment, a method for testing a hydraulic proportional solenoid valve is provided, comprising the steps of:
(1) after the test is started, the hydraulic proportional solenoid valve 100 is installed and fastened on the installation module 48;
(2) the test device is powered on, the industrial control computer 1 is opened, the working software of the industrial control computer 1 and the working software of the electronic power drive board 40 are initialized, a test operator selects a driving working module matched with the hydraulic proportional solenoid valve 100 on the industrial control computer 1 through man-machine interaction, various working condition parameters required by the test are input, the working temperature of the test oil is set, the driving system 2, the oil supply system 3 and the oil outlet adjusting system 5 are started after the temperature of the test oil reaches the set temperature, the hydraulic proportional solenoid valve 100 is enabled to enter the working state under the appointed working condition, the electronic power drive board 40 measures the oil inlet pressure through the high-pressure oil pressure transmitter 12, measures the output oil pressure through the pressure transmitter 22, measures the output flow through the flow transmitter 23, and controls the driving current of the electronic control proportional flow solenoid valve 24 through a closed loop, enabling the output oil pressure and the output flow to meet the current test working condition to obtain a test result;
(3) after the test work is finished, the industrial control computer 1 is called to clear the residual test oil working module of the hydraulic proportional solenoid valve 100, the oil supply solenoid valve 13 of the oil supply system 3 loop is automatically cut off, the air supply stop valve 10 of the air supply system 4 loop is connected, the oil outlet stop valve 21 of the oil outlet adjusting system 5 loop is cut off, and the air outlet electric control stop valve 29 of the air outlet processing system 6 loop is connected, so that the hydraulic proportional solenoid valve 100 is changed into a compressed air channel from an original oil channel, and meanwhile, the electronic power drive plate 40 provides the maximum opening working current for the hydraulic proportional solenoid valve 100, so that the opening of the hydraulic proportional solenoid valve 100 is maximum, and the compressed air can quickly take away residual oil;
(4) after the cleaning work is finished, the hydraulic proportional solenoid valve 100 and the installation module 48 are disassembled, the test device is powered off, and the test is finished.
When supplying gas, the method further comprises the following substeps: the air supply compressor 37 provides compressed air with certain pressure for the loop of the air supply system 4, the air overflow valve pressure regulator 7 controls the air inlet pressure transmitted by the air supply compressor 37, the air supply pressure transmitter 9 collects the air inlet pressure and transmits the air inlet pressure to the electronic power drive board 40, and the electronic power drive board 40 can transmit the air inlet pressure to the industrial control computer 1.
When in air outlet, the method also comprises the following substeps: the compressed gas forms oil-gas mixed gas after passing through the hydraulic proportional solenoid valve 100, the oil-gas mixed gas enters the oil-gas separator 27 through the air outlet electric control stop valve 29, the oil-gas separator 27 enables separated test oil to flow back to a test oil tank, and the separated air is discharged back to the atmosphere through the exhaust fan 25.
The electronic drive board 40 can also upload the performance data obtained by the test to the industrial control computer 1 in real time, then continuously adjust the power supply of the drive board to the proportional solenoid valve, test the next working condition point, obtain the driving power supply voltage and the driving power supply current of the proportional solenoid valve under different working condition parameters, and output the performance data such as the pressure drop of various proportional solenoid valves with the measured oil pressure and output flow. Then, the industrial control computer 1 carries out data processing, various performance characteristic curves of the proportional solenoid valve are drawn, test reports of the proportional solenoid valve and the reversing valve are generated, and various performance data obtained by the tests can be stored and printed.
The main technical parameters of the proportional solenoid valve testing device provided by the embodiment of the application comprise: the power supply voltage is three-phase 380V voltage, the rotating speed range of the main motor is 50-4000 rpm, and the oil supply quantity of the oil supply system is more than or equal to 20L/min.
The test device that this application embodiment provided, oil feeding pressure can be controlled according to the operating mode parameter of proportional solenoid valve to oil feeding system, and the governing system that produces oil can control the output oil pressure and the output flow of proportional solenoid valve according to the operating mode parameter of proportional solenoid valve, and the collection of industrial control computer the performance data of proportional solenoid valve under every operating mode, according to the performance data completion is right the test of proportional solenoid valve can realize the engineering machinery hydraulic pressure proportional solenoid valve's of multiple structure and performance test, plays the additional action to the research and development and the test of engineering machinery hydraulic pressure proportional solenoid valve for the research and development process.
As shown in fig. 3, in the testing apparatus for a proportional solenoid valve according to the embodiment of the present invention, in addition to the above-described embodiment, a hydraulic proportional solenoid valve 100 to be tested is mounted on a module mounting seat 49 of a test stage 45 via a mounting module 48.
As shown in fig. 3, the test bench further comprises an electric control cabinet 38, wherein a precision stabilized voltage power supply 39, an electronic power drive board 40 and a printer 41 are arranged on the electric control cabinet 38, a drive power supply connecting seat 42, a power plug 43, a power line 44, an air collecting cover 46 and an exhaust fan 25 are arranged on the upper layer of the test bench 45, and a hydraulic station 51 and a compressed air station 50 are arranged on the lower layer.
The test bench is provided with a totally-enclosed operating room, two sides of the operating room are provided with movable windows, and transparent protective covers are arranged on the movable windows.
Except being capable of closing the fully transparent protective window, the working process of the test device also has a special air exhaust system, and the oil vapor of the test oil is exhausted outdoors, so that the health and safety of personnel are ensured.
Requirements for test oil temperatures at different temperatures: the test bench is provided with a totally closed operating room, and two sides of the test bench are provided with movable doors of transparent protective covers, so that the oil mist diffusion can be reduced, and the personnel safety is ensured. The test bench is provided with a ventilation system, and air in the test device is discharged outdoors through the ventilation system during operation, so that the gas in the test bench is prevented from accumulating.
According to the test device of the hydraulic proportional solenoid valve, after the pumped high-pressure oil is subjected to oil pressure output and output flow control through the electric control proportional flow solenoid valve, the output flow is measured through the flowmeter, and the output flow can be measured to reach 1-level precision.
The utility model provides a test device has adopted industrial control computer and electronic control unit drive plate, structure and control mode to various hydraulic pressure proportional solenoid valves of present domestic and foreign difference, can compile different work software module, through selecting different work software module, can be applicable to the performance test of most various engineering machine tool hydraulic pressure proportional solenoid valves domestic and foreign, and the installation and debugging are convenient, measurement accuracy is high, can carry out program control and automatic display and printing and storage to test procedure and test result, can also possess common fault detection and demonstration function.
For convenience of description, the above devices are described as being divided into various units by function, and are described separately. Of course, the functionality of the units may be implemented in one or more software and/or hardware when implementing the present application.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in Random Access Memory (RAM), memory, Read Only Memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. A testing device for a hydraulic proportional solenoid valve of engineering machinery is used for testing the hydraulic proportional solenoid valve (100), wherein the testing hydraulic proportional solenoid valve (100) has multiple working conditions, and the multiple working conditions correspond to multiple working condition parameters; the method is characterized in that:
the test device includes:
the system comprises an industrial control computer (1), a driving system (2), an oil supply system (3), an oil outlet adjusting system (5), an air supply system (4) and an air outlet processing system (6);
wherein the industrial control computer (1) is configured to receive the plurality of working condition parameters of the hydraulic proportional solenoid valve (100), collect performance data of the hydraulic proportional solenoid valve (100) under each working condition, and complete the test of the hydraulic proportional solenoid valve (100) according to the performance data;
the driving system (2) is configured to provide driving voltage and driving current which work under various working conditions to different hydraulic proportional solenoid valves (100);
the oil supply system (3) is configured to supply oil and control the oil inlet pressure of the hydraulic proportional solenoid valve (100) according to the multiple working condition parameters;
the oil outlet regulating system (5) is configured to control the output oil pressure and the output flow of the hydraulic proportional solenoid valve (100) according to the multiple working condition parameters;
the air supply system (4) is configured to provide compressed air for cleaning into the hydraulic proportional solenoid valve (100) after the test;
the outlet air treatment system (6) is configured to treat air flowing through the hydraulic proportional solenoid valve (100);
the industrial control computer (1) is configured to control the oil supply system (3) and the oil outlet regulating system (5) to switch off when switching on the gas supply system (4) and the gas outlet processing system (6), and to control the gas supply system (4) and the gas outlet processing system (6) to switch off when switching on the oil supply system (3) and the oil outlet regulating system (5).
2. The engineering machinery hydraulic proportional solenoid valve testing device of claim 1, wherein: the industrial control computer (1) is connected with an electronic power drive board (40), a voltage sensor and a current sensor are arranged on the electronic power drive board (40), and the industrial control computer (1) collects the driving voltage and the driving current of the hydraulic proportional solenoid valve (100) under each working condition through the voltage sensor and the current sensor.
3. The engineering machinery hydraulic proportional solenoid valve testing device of claim 2, wherein: the oil supply system (3) comprises a high-pressure oil pressure transmitter (12), an oil inlet pressure control valve (35) and an oil supply electromagnetic valve (13), wherein the oil inlet pressure control valve (35) is used for controlling the oil inlet pressure; the high-pressure oil pressure transmitter (12) collects the oil inlet pressure and transmits the oil inlet pressure to the electronic power drive board (40), wherein the electronic power drive board (40) can transmit the oil inlet pressure to the industrial control computer (1); the oil supply electromagnetic valve (13) cuts off or switches on the oil supply system (3) loop.
4. The engineering machinery hydraulic proportional solenoid valve testing device of claim 3, wherein: go out oil governing system (5) and include pressure transmitter (22), flow transmitter (23) and automatically controlled proportional flow solenoid valve (24), pressure transmitter (22) with flow transmitter (23) are gathered respectively output oil pressure with output flow, and send to electronic power drive plate (40), electronic power drive plate (40) basis automatically controlled proportional flow solenoid valve (24) control drive voltage with drive current, wherein, electronic power drive plate (40) can with output oil pressure with output flow send to industrial control computer (1).
5. The engineering machinery hydraulic proportional solenoid valve testing device of claim 4, wherein: air supply system (4) are including air feed compressor (37), air overflow valve voltage regulator (7) and air feed pressure transmitter (9), air feed compressor (37) provide inlet pressure for compressed air, air overflow valve voltage regulator (7) control inlet pressure, air feed pressure transmitter (9) are gathered inlet pressure and are sent to electron power drive plate (40), wherein, electron power drive plate (40) can with inlet pressure send to industrial control computer (1).
6. The engineering machinery hydraulic proportional solenoid valve testing device of claim 5, wherein: the gas outlet treatment system (6) comprises a gas outlet electric control stop valve (29) and an oil-gas separator (27), the gas outlet electric control stop valve (29) can be connected with or cut off a loop of the gas outlet treatment system (6), and the oil-gas separator (27) can receive oil-gas mixed gas and separate the gas.
7. The engineering machinery hydraulic proportional solenoid valve testing device of claim 6, wherein: also includes a test bench (45); the test bench (45) is provided with an upper layer and a lower layer; the oil supply system (3), the oil outlet adjusting system (5), the gas supply system (4) and the gas outlet processing system (6) are all arranged on the lower layer; a base (49) is fixed on the upper layer, an installation module (48) is fixed on the base (49), and the hydraulic proportional solenoid valve (100) can be installed on the installation module (48); the top of upper strata is equipped with air-collecting cover (46), the outside on upper strata is equipped with air exhauster (25), air-collecting cover (46) are connected air exhauster (25), the gas outlet of oil and gas separator (27) is connected to air exhauster (25).
8. A method for testing a hydraulic proportional solenoid valve of engineering machinery is characterized by comprising the following steps: the method comprises the following steps:
after the test is started, the hydraulic proportional solenoid valve (100) is installed and fastened on the installation module (48);
the test device is powered on, the industrial control computer (1) is started, the working software of the industrial control computer (1) and the working software of the electronic power drive plate (40) are initialized, a test operator selects a driving working module matched with the hydraulic proportional solenoid valve (100) on the industrial control computer (1) through man-machine interaction, various working condition parameters required by the test are input, the working temperature of the test oil is set, the driving system (2), the oil supply system (3) and the oil outlet adjusting system (5) are started after the temperature of the test oil reaches the set temperature, the hydraulic proportional solenoid valve (100) enters a specified working condition working state, at the moment, the electronic power drive plate (40) determines the oil inlet pressure through the high-pressure oil pressure transmitter (12), and the output oil pressure through the pressure transmitter (22), the output flow is measured through the flow transmitter (23), and the driving current of the electric control proportional flow electromagnetic valve (24) is controlled through a closed loop, so that the output oil pressure and the output flow meet the current test working condition, and a test result is obtained;
after the test work is finished, a residual test oil working module of the hydraulic proportional solenoid valve (100) is cleared by calling the industrial control computer (1), an oil outlet stop valve (21) of a loop of the oil outlet adjusting system (5) is stopped, and an air outlet electric control stop valve (29) of a loop of the air outlet processing system (6) is connected by automatically stopping the oil supply solenoid valve (13) of the loop of the oil supply system (3) and connecting an air supply stop valve (10) of the loop of the air supply system (4), so that the hydraulic proportional solenoid valve (100) is changed into a passage of compressed air from an original oil passage, and meanwhile, the electronic power drive plate (40) provides a maximum opening working current for the hydraulic proportional solenoid valve (100), so that the hydraulic proportional solenoid valve (100) has the maximum opening degree, and the compressed air can rapidly take away residual oil;
after the cleaning work is finished, the hydraulic proportional solenoid valve (100) and the installation module (48) are disassembled, the test device is powered off, and the test is finished.
9. The method for testing a hydraulic proportional solenoid valve according to claim 8, wherein: further comprising the substeps of: air feed compressor (37) to air feed system (4) return circuit provides the compressed air who has certain pressure, air overflow valve voltage regulator (7) control the admission pressure that air feed compressor (37) carried, air feed pressure transmitter (9) are gathered admission pressure and are sent to electron power drive plate (40), wherein, electron power drive plate (40) can with admission pressure send to industrial control computer (1).
10. The method for testing a hydraulic proportional solenoid valve according to claim 9, wherein: further comprising the substeps of: compressed gas flows through the oil-gas mixed gas after the test is formed after the hydraulic proportional solenoid valve (100), the oil-gas mixed gas passes through the air outlet electric control stop valve (29) and enters the oil-gas separator (27), the separated test oil flows back to the test oil tank through the oil-gas separator (27), and the separated air is discharged back to the atmosphere through the exhaust fan (25).
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| US20110024654A1 (en) * | 2007-11-28 | 2011-02-03 | Peike Shi | electro-hydraulic proportional flow valve speed regulating control system and its method |
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