NL2025654B1 - Hydraulic cylinder test bed measurement and control system - Google Patents

Hydraulic cylinder test bed measurement and control system Download PDF

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Publication number
NL2025654B1
NL2025654B1 NL2025654A NL2025654A NL2025654B1 NL 2025654 B1 NL2025654 B1 NL 2025654B1 NL 2025654 A NL2025654 A NL 2025654A NL 2025654 A NL2025654 A NL 2025654A NL 2025654 B1 NL2025654 B1 NL 2025654B1
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Netherlands
Prior art keywords
test
hydraulic cylinder
measurement
control
hydraulic
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NL2025654A
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Dutch (nl)
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NL2025654A (en
Inventor
Guo Junmei
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Univ Qilu Technology
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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
    • F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G05B19/054—Input/output
    • 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
    • F15B21/08—Servomotor systems incorporating electrically operated control 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
    • F15B2211/30—Directional control
    • F15B2211/32—Directional control characterised by the type of actuation
    • F15B2211/327—Directional control characterised by the type of actuation electrically or electronically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15C—FLUID-CIRCUIT ELEMENTS PREDOMINANTLY USED FOR COMPUTING OR CONTROL PURPOSES
    • F15C1/00—Circuit elements having no moving parts
    • F15C1/02—Details, e.g. special constructional devices for circuits with fluid elements, such as resistances, capacitive circuit elements; devices preventing reaction coupling in composite elements ; Switch boards; Programme devices
    • F15C1/04—Means for controlling fluid streams to fluid devices, e.g. by electric signals or other signals, no mixing taking place between the signal and the flow to be controlled
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B2219/00—Program-control systems
    • G05B2219/10—Plc systems
    • G05B2219/13—Plc programming
    • G05B2219/13141—Derive sequence program from design, cad data of machine

Abstract

A hydraulic cylinder test bed measurement and control system comprises console, 5 electrical control cabinet, measurement and control cabinet, three test beds and main oil source components. Test data is acquired, analyzed and processed, a predetermined measurement and control program is automatically selected and started in automatic test mode according to test items selected by a user, instruction signals are sent to an analog output card and a PLC according to a predetermined action sequence, and output to 10 actuating elements eg. proportional overflow valves, proportional reversing valves, solenoid valves and contactors, realizing real-time control and acquisition of test data eg. pressure, flow and displacement, full-automatic flow monitoring and control of performance test processes e.g. frequency response and step response of hydraulic cylinders, real-time data acquisition with high speed and precision, efficient and accurate 15 real-time issuance of control commands, ensuring timeliness, accuracy, high efficiency and safety of the test measurements and control.

Description

HYDRAULIC CYLINDER TEST BED MEASUREMENT AND CONTROL
SYSTEM Field of the Invention The present invention relates to the technical field of hydraulic cylinder test bed measurement and control, in particular to a hydraulic cylinder test bed measurement and control system. Background of the Invention A hydraulic cylinder is a hydraulic actuating element that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). The hydraulic cylinder is simple in structure and reliable in operation. When the hydraulic cylinder is used to realize reciprocating motion, a deceleration device can be omitted, no transmission gap occurs, and the motion is stable, so the hydraulic cylinder has been widely used in hydraulic systems of various machines. In the delivery, upgrade optimization, maintenance and manufacturing of hydraulic cylinders, relevant performances of the hydraulic cylinders are required to be tested, in order to better improve the technical performance and quality of products and enhance the market competitiveness of the products.
Alaboratory hydraulic cylinder measurement and control system provides, according to the working characteristics of an engineering machine, a large-scale comprehensive test platform with high precision for its hydraulic elements and hydraulic systems. The laboratory hydraulic cylinder measurement and control system can simulate various actual process conditions of the engineering machine under the control of a computer and load the tested elements and systems, so as to test the static and dynamic characteristics of the hydraulic elements and hydraulic systems under the simulated process conditions. However, the existing hydraulic cylinder test bed measurement and control system cannot perform high-speed, real-time and accurate acquisition and control on relevant performance parameters of a hydraulic cylinder on the test bed, requires human aid for manual measurement and control, and cannot realize high-speed, real-time and full-automatic measurement and control.
Summary of the Invention An objective of the present invention is to propose a hydraulic cylinder test bed measurement and control system in order to solve the problems in the prior art.
In order to achieve the above objective, the following technical solution is adopted in the present invention.
A hydraulic cylinder test bed measurement and control system comprises a console, an electrical control cabinet, a measurement and control cabinet, three test beds and main oil source components, wherein the console comprises a display screen, an industrial control computer and secondary display instruments, and the industrial control computer is electrically connected with the display screen; the measurement and control cabinet comprises an analog data output card, a signal isolation module, an analog data acquisition card, and level conversion and hardware filtering components; the analog data output card is connected with the signal isolation module, and the analog data acquisition card is connected with the level conversion and hardware filtering components; the electrical control cabinet comprises a PLC module, a control power supply, buttons and switches, an intermediate relay, an indicator light and a sound-light alarm device; the control power supply, the buttons and switches, the intermediate relay, the indicator light and the sound-light alarm device are all electrically connected with the PLC module; each of the three test beds comprises a proportional overflow valve, a proportional reversing valve, a hydraulic branch oil line and branch oil line sensors; the proportional overflow valve and the proportional reversing valve are mechanically connected with the hydraulic branch oil line; the main oil source components comprise a solenoid valve, an oil pump, a hydraulic main oil line and main oil line sensors; and the solenoid valve is mechanically connected with the hydraulic main oil line.
Preferably, the main oil line sensors comprise a pressure sensor, a flow sensor and a temperature sensor.
Preferably, the branch oil line sensors comprise a pressure sensor, a flow sensor, a displacement sensor and an electronic balance sensor.
Preferably, the proportional overflow valve and the proportional reversing valve are electrically connected with the signal isolation module. Preferably, the analog data acquisition card 1s a multifunctional data acquisition card. Preferably, the solenoid valve is electrically connected with the intermediate relay.
Preferably, the branch oil line sensors are electrically connected with the level conversion and hardware filtering components. Beneficial effects of the present invention: test data is acquired, analyzed and processed, a predetermined measurement and control program is automatically selected and started in an automatic test mode according to the test items selected by a user, and instruction signals are sent to the analog output card and a PLC according to the predetermined action sequence, and finally output to actuating elements such as proportional overflow valves, proportional reversing valves, solenoid valves and contactors, thereby realizing real-time control and acquisition of various test data such as pressure, flow and displacement, full-automatic flow monitoring and control of more than ten specific performance test processes such as frequency response and step response of hydraulic cylinders, real-time data acquisition with high speed and high precision, and efficient and accurate real-time issuance of control commands, and ensuring the timeliness, accuracy, high efficiency and safety of the test measurement and control process.
Brief Description of the Drawings Fig. 1 is a schematic structural diagram of a console of a hydraulic cylinder test bed measurement and control system according to the present invention; Fig. 2 1s a schematic structural diagram of an electrical control cabinet of the hydraulic cylinder test bed measurement and control system according to the present invention; Fig. 3 is a schematic structural diagram of main oil source components of the hydraulic cylinder test bed measurement and control system according to the present invention; Fig. 4 is a schematic structural diagram of a measurement and control cabinet of the hydraulic cylinder test bed measurement and control system according to the present invention; and Fig. 5 is a schematic structural diagram of a test bed of the hydraulic cylinder test bed measurement and control system according to the present invention.
Detailed Description of the Embodiments A clear and complete description will be made to the technical solutions in the embodiments of the present invention below with reference to the accompanying drawings in the embodiments of the present invention.
Apparently, the embodiments described are only part of the embodiments of the present invention, not all of them.
Referring to Figs. 1-5, a hydraulic cylinder test bed measurement and control system comprises a console, an electrical control cabinet, a measurement and control cabinet, three test beds and main oil source components, wherein the console comprises a display screen, an industrial control computer and secondary display instruments; the secondary display instruments display the data of sensors, which is convenient for a worker to inquire and understand.
The industrial control computer is electrically connected with the display screen, and a labVIEW-based full-automatic measurement and control software system is installed on the industrial control computer, which can perform various tests such as trial operation test, starting pressure characteristic test, pressure resistance test, durability test, stroke test, frequency response test and step test on a hydraulic cylinder.
For each test, a variety of test processes and test parameters can be manually selected and set in advance, and specific test parameters can be set for a specific hydraulic cylinder.
Real-time communication between DAQNavi Polymorphic VI and an analog data acquisition card and labVIEW application software are used to set various test parameters and test processes of the hydraulic cylinder, flow control of each test process, real-time acquisition and low-pass and smooth filtering of various test data such as pressure, flow and displacement, linear engineering quantity conversion, real-time dynamic data and curve display and storage, and generation and printing of various test reports, and the display screen displays the data on the industrial control computer, which is convenient for the worker to operate and understand.
The measurement and control cabinet comprises an analog data output card, a signal isolation module, an analog data acquisition card, and level conversion and hardware filtering components.
The analog data acquisition card is a multifunctional data acquisition card.
The analog output card and the analog data output card are connected with the signal isolation module, and the analog data acquisition card is connected with the level conversion and hardware filtering components.
The analog input realizes high-precision reading of data by means of differential access, the level conversion realizes the conversion 5 of 4-20 ma analog current signals of pressure, flow or the like to 1-5VDC voltage signals, and the input and output signal isolation and the hardware filtering realize the reliability and accuracy of analog data transmission.
The electrical control cabinet comprises a PLC module, a control power supply, buttons and switches, an intermediate relay, an indicator light and a sound-light alarm device.
The control power supply, the buttons and switches, the intermediate relay, the indicator light and the sound-light alarm device are all electrically connected with the PLC module.
The PLC module controls and operates the connected devices.
Each of the three test beds comprises a proportional overflow valve, a proportional reversing valve, a hydraulic branch oil line and branch oil line sensors.
The branch oil line sensors detect and record the data on the three test beds, the branch oil line sensors are electrically connected with the level conversion and hardware filtering components, and the level conversion and hardware filtering components make the measured data of the branch oil line sensors more accurate and prevent the interference of external factors.
The proportional overflow valve and the proportional reversing valve are electrically connected with the signal isolation module.
The signal isolation can isolate external interference factors.
The branch oil line sensors comprise a pressure sensor, a flow sensor, a displacement sensor and an electronic balance sensor.
The proportional overflow valve and the proportional reversing valve are mechanically connected with the hydraulic branch oil line.
The proportional overflow valve and the proportional reversing valve control the hydraulic branch oil line and quickly detect the hydraulic cylinder.
The main oil source components comprise a solenoid valve, an oil pump, a hydraulic main oil line and main oil line sensors.
The solenoid valve is electrically connected with the intermediate relay.
The main oil line sensors comprise a pressure sensor, a flow sensor and a temperature sensor.
Through these sensors, the data in a main oil source can be known in time.
The solenoid valve is mechanically connected with the hydraulic main oil line.
The hydraulic cylinder test bed measurement and control system comprises a console, a measurement and control cabinet, an electrical control cabinet, three test beds, and instruments for secondary display of pressure, displacement, speed and temperature, wherein the three test beds can simultaneously test three different hydraulic cylinders; the console comprises a display screen and an industrial control computer, and the industrial control computer is electrically connected with the display screen; the display screen displays the data on the industrial control computer; labVIEW application software is installed on the industrial control computer; the real-time communication between DAQNavi Polymorphic VI and an analog data acquisition card and the labVIEW application software realize configuration of various test parameters and test processes of the hydraulic cylinders, flow control of each test process, real-time acquisition and low-pass and smooth filtering of various test data such as pressure, flow and displacement, linear engineering quantity conversion, real-time dynamic data and curve display and storage, and generation and printing of various test reports; the measurement and control cabinet comprises an analog data output card, a signal isolation module, a data acquisition card and level conversion and hardware filtering components, wherein the signal isolation module and the level conversion and hardware filtering components ensure the reliability and accuracy of data transmission; the analog data output card is connected with the signal isolation module, and the signal isolation module ensures accurate output of the analog data; the data acquisition card is connected with the level conversion and hardware filtering components; each of the three test beds is provided with branch oil line sensors, a proportional reversing valve, a proportional overflow valve and a hydraulic branch oil line; the branch oil line sensors comprise pressure, flow and displacement sensors, which can detect the data of the hydraulic cylinders and acquire the test data of the hydraulic cylinders in real time; the electrical control cabinet comprises a PLC module, a control power supply, buttons and switches, an intermediate relay, an indicator light and a sound-light alarm device; the control power supply, the buttons and switches, the intermediate relay, the indicator light and the sound-light alarm device are all electrically connected with the PLC module, and the PLC module operates the connected devices; the main oil source components comprise a solenoid valve, an oil pump, a hydraulic main oil line and main oil line sensors, the solenoid valve is mechanically connected with the hydraulic main oil line, the solenoid valve directly controls the opening of the hydraulic main oil line and performs segmented main oil control, and the main oil line sensors detect various data in the main oil line, so as to acquire and detect the data in time.
Described above are specific preferred embodiments of the present invention only, but the protection scope of the present invention is not limited thereto. Any skilled person who is familiar with this art could make equivalent substitutions or variations within the disclosed technical scope of the present invention according to the technical solutions of the present invention and the inventive concepts thereof, and these substitutions or variations shall fall within the protection scope of the present invention.

Claims (7)

ConclusiesConclusions 1. Meet- en bedieningssysteem voor proetbanken van hydraulische cilinders, omvattende een console, een elektrische bedieningskast, een meet- en bedieningskast, drie proefbanken en hoofdcomponenten van een oliebron, waarbij de console een beeldscherm, een industriële bedieningscomputer en secundaire aanduidingsinstrumenten omvat, en de industriële bedieningscomputer met het beeldscherm elektrisch verbonden is; de meet- en bedieningskast een uitvoerkaart voor analoge gegevens, een module voor signaalisolatie, een kaart ter acquisitie van analoge gegevens en componenten voor niveauomzetting en hardwarefiltrering omvat, de uitvoerkaart voor analoge gegevens met de module voor signaalisolatie verbonden is, en de kaart ter acquisitie van analoge gegevens met de componenten voor niveauomzetting en hardwarefiltrering verbonden is; de elektrische bedieningskast een PLC-module een bedieningsenergievoeding, knoppen en schakelaars, een tussenrelais, een controlelampje en een toestel voor geluids- en lichtalarm omvat; de bedieningsenergievoeding, de knoppen en schakelaars, het tussenrelais, het controlelampje en het toestel voor geluids- en lichtalarm allen met de PLC-module elektrisch verbonden zijn; elke van de drie proefbanken een proportioneel overstroomventiel, een proportioneel omkeerventiel, een hydraulische olieaftakking en sensoren op de olieaftakking omvat; het proportionele overstroomventiel en het proportionele omkeerventiel mechanisch met de hydraulische olieaftakking verbonden zijn; de hoofdcomponenten van de oliebron een magneetventiel, een oliepomp, een hydraulische hoofdolieleiding en sensoren op de hoofdolieleiding omvatten; en het magneetventiel met de hydraulische hoofdolieleiding mechanisch verbonden is.A hydraulic cylinder test bench measurement and control system comprising a console, an electrical control box, a measurement and control box, three test benches and main components of an oil well, the console comprising a display, an industrial control computer and secondary indicating instruments, and the industrial control computer is electrically connected to the display; the measurement and control box includes an analog data output card, a signal isolation module, an analog data acquisition card, and level conversion and hardware filtering components, the analog data output card is connected to the signal isolation module, and the analog data acquisition card analog data is connected to the level conversion and hardware filtering components; the electrical control box comprises a PLC module, an operating power supply, buttons and switches, an intermediate relay, an indicator lamp and a sound and light alarm device; the control power supply, the buttons and switches, the intermediate relay, the indicator lamp and the sound and light alarm device are all electrically connected to the PLC module; each of the three test benches includes a proportional overflow valve, a proportional reversing valve, a hydraulic oil branch and sensors on the oil branch; the proportional overflow valve and the proportional reversing valve are mechanically connected to the hydraulic oil branch; the main components of the oil well include a solenoid valve, an oil pump, a hydraulic main oil line and sensors on the main oil line; and the solenoid valve is mechanically connected to the main hydraulic oil line. 2. Meet- en bedieningssysteem voor een proefbanken van hydraulische cilinders volgens conclusie 1, waarbij de sensoren op de hoofdolieleiding een druksensor, een debietsensor en een temperatuursensor omvatten.The measuring and operating system for a hydraulic cylinder test bed according to claim 1, wherein the sensors on the main oil line comprise a pressure sensor, a flow rate sensor and a temperature sensor. 3. Meet- en bedieningssysteem voor proefbanken van hydraulische cilinders volgens conclusie 1, waarbij de sensoren op de olieaftakking een druksensor, een debietsensor, een bewegingssensor en een elektronische evenwichtssensor omvatten.The hydraulic cylinder test bed measuring and operating system according to claim 1, wherein the sensors on the oil branch comprise a pressure sensor, a flow sensor, a motion sensor and an electronic equilibrium sensor. 4. Meet- en bedieningssysteem voor proefbanken van hydraulische cilinders volgens conclusie 1, waarbij het proportionele overstroomventiel en het proportionele omkeerventiel met de module voor signaalisolatie verbonden zijn.The hydraulic cylinder test bench measurement and control system according to claim 1, wherein the proportional overflow valve and the proportional reversing valve are connected to the signal isolation module. 5. Meet- en bedieningssysteem voor proefbanken van hydraulische cilinders volgens conclusie 1, waarbij het magneetventiel met het tussenrelais elektrisch verbonden is.The measuring and operating system for hydraulic cylinder test benches according to claim 1, wherein the solenoid valve is electrically connected to the intermediate relay. 6. Meet- en bedieningssysteem voor proefbanken van hydraulische cilinders volgens conclusie 1, waarbij de kaart ter acquisitie van analoge gegevens een multifunctionele kaart ter acquisitie van gegevens is.The hydraulic cylinder test bed measurement and control system of claim 1, wherein the analog data acquisition card is a multi-function data acquisition card. 7. Meet- en bedieningssysteem voor proefbanken van hydraulische cilinders volgens conclusie 1, waarbij de sensoren op de olieaftakking met de componenten voor niveauomzetting en hardwarefiltrering elektrisch verbonden zijn.The hydraulic cylinder test bed measurement and control system of claim 1, wherein the sensors on the oil tap are electrically connected to the level conversion and hardware filtering components.
NL2025654A 2019-05-30 2020-05-22 Hydraulic cylinder test bed measurement and control system NL2025654B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910466068.1A CN110161954A (en) 2019-05-30 2019-05-30 A kind of hydraulic cylinder test platform TT&C system

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NL2025654A NL2025654A (en) 2020-12-03
NL2025654B1 true NL2025654B1 (en) 2022-01-20

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN204572631U (en) * 2014-10-15 2015-08-19 上海徽封机电设备有限公司 A kind of proportional servo valve test system
CN204512069U (en) * 2014-12-31 2015-07-29 燕山大学 The test bed hydraulic control system of energy saving excavator oil hydraulic cylinder
CN106338969B (en) * 2016-10-21 2018-09-14 吉林大学 Electro-hydraulic servo feed system reliability test and test method
CN108087388A (en) * 2016-11-21 2018-05-29 赵江涛 A kind of electric control system of Hydraulic Experimental Platform
CN107991026A (en) * 2017-12-20 2018-05-04 马鞍山市恒永利机械科技有限公司 A kind of hydraulic cylinder spillage test device
CN108961697A (en) * 2018-07-05 2018-12-07 吴翔 Phonetic warning system based on WinCC database

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