CN209962124U - Hydraulic cylinder experiment table measurement and control system - Google Patents

Abstract

The utility model discloses a pneumatic cylinder laboratory bench system of observing and controling, including operation panel, electrical control cabinet, survey and control cabinet, three laboratory bench and main oil source part. The utility model discloses the completion is to experimental data's collection, analysis, handle, according to the test item of user selection when automatic test mode, automatic selection starts predetermined measurement and control procedure, send instruction signal to analog output card and PLC according to predetermined action time sequence, finally export the proportion overflow valve, the proportion switching-over valve, executive component such as solenoid valve and contactor, realize pressure, flow, the real-time control and the collection of each experimental data such as displacement, realize pneumatic cylinder frequency response, the full-automatic flow monitoring and the control of ten kinds of specific properties experimentation such as step response, high speed, the real-time data acquisition of high accuracy and high efficiency, accurate real-time control order is issued, the real-time of experiment measurement and control process has been ensured, accuracy, high efficiency and security.

Description

Hydraulic cylinder experiment table measurement and control system

Technical Field

The utility model relates to a pneumatic cylinder laboratory bench observes and controls technical field, especially relates to a pneumatic cylinder laboratory bench observes and controls system.

Background

The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has simple structure and reliable operation. When the reciprocating motion is realized by using the hydraulic cylinder, a speed reduction device can be omitted, no transmission gap exists, and the reciprocating motion is stable, so that the hydraulic cylinder is widely applied to hydraulic systems of various machines, and the requirements of carrying out related performance tests on the hydraulic cylinder in the processes of delivery, upgrading optimization, maintenance, processing and manufacturing of the hydraulic cylinder are met, so that the technical performance and quality of a product are better improved, and the market competitiveness of the product is improved.

The laboratory hydraulic cylinder measurement and control system provides a high-precision large-scale comprehensive experiment platform for hydraulic elements and hydraulic systems of the laboratory hydraulic cylinder measurement and control system aiming at the working characteristics of engineering machinery. The hydraulic cylinder test bench can simulate various actual process working conditions of engineering machinery under the control of a computer and load tested elements and systems, so that static, dynamic and other characteristics of the hydraulic elements and the hydraulic systems are tested under the simulated process working conditions, but the conventional test and control system of the hydraulic cylinder test bench cannot accurately acquire and control related performance parameters of the hydraulic cylinder on the test bench in a high-speed, real-time and real-time manner, and meanwhile, manual measurement and control are required to be carried out in a manual assistance manner during measurement and control, so that the high-speed, real-time and full-automatic measurement and control cannot be realized.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the shortcoming that exists among the prior art, and the hydraulic cylinder laboratory bench system of observing and controling that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pneumatic cylinder laboratory bench system of observing and controling, includes operation panel, electrical control cabinet, measurement and control cabinet, three laboratory bench and main oil source part, including display screen, industrial computer and secondary display instrument on the operation panel, and industrial computer and display screen are the electricity and connect, including analog quantity data output card, signal isolation module, analog quantity data collection card and level conversion and hardware filtering component in the measurement and control cabinet, analog quantity data output card and signal isolation module connect, analog quantity data collection card and level conversion and hardware filtering component connect, electrical control cabinet is including PLC module, control power, button and switch, auxiliary relay, pilot lamp and audible-visual alarm device all are connected with the PLC module electricity, include proportion overflow valve, three laboratory bench respectively, The main oil source component comprises an electromagnetic valve, an oil pump, a hydraulic main oil way and a main oil way sensor, and the electromagnetic valve is mechanically connected with the hydraulic main oil way.

Preferably, the main oil path sensor includes a pressure sensor, a flow rate sensor, and a temperature sensor.

Preferably, the oil distribution path sensor comprises 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 quantity data acquisition card adopts a multifunctional data acquisition card.

Preferably, the solenoid valve is electrically connected to an intermediate relay.

Preferably, the oil distribution channel sensor is electrically connected with the level conversion and hardware filtering component.

The utility model has the advantages that: the system completes the collection, analysis and processing of experimental data, automatically selects and starts a preset measurement and control program according to a test item selected by a user in an automatic test mode, sends a command signal to an analog output card and a PLC according to a preset action time sequence, and finally outputs the command signal to execution elements such as a proportional overflow valve, a proportional reversing valve, an electromagnetic valve, a contactor and the like, realizes the real-time control and collection of each experimental data such as pressure, flow, displacement and the like, realizes the full-automatic flow monitoring and control of more than ten specific performance experimental processes such as hydraulic cylinder frequency response, step response and the like, and issues high-speed and high-precision real-time data collection and high-efficiency and accurate real-time control commands, thereby ensuring the real-time performance, accuracy, high efficiency and safety of the experimental measurement and control process.

Drawings

Fig. 1 is a schematic structural view of an operation table of a measurement and control system of a hydraulic cylinder experiment table provided by the utility model;

fig. 2 is a schematic structural view of an electrical control cabinet of a measurement and control system of a hydraulic cylinder experiment table provided by the utility model;

fig. 3 is a schematic structural view of a main oil source component of a measurement and control system of a hydraulic cylinder experiment table provided by the utility model;

fig. 4 is a schematic structural view of a measurement and control cabinet of a measurement and control system of a hydraulic cylinder experiment table according to the present invention;

fig. 5 is the utility model provides a structural schematic of pneumatic cylinder laboratory bench system laboratory bench.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-5, a pneumatic cylinder laboratory bench system of observing and controling, including the operation panel, the electrical control cabinet, the cabinet of observing and controlling, three laboratory bench and main oil source part, including the display screen on the operation panel, industrial computer and secondary display instrument, the secondary display instrument shows the data of sensor, make things convenient for staff's inquiry and understanding, and industrial computer and display screen are the electricity to be connected, install the full-automatic software system of observing and controlling based on labVIEW on the industrial computer, the full-automatic software system of observing and controlling of industrial computer can be to the pneumatic cylinder try on the operation experiment, start pressure characteristic experiment, withstand voltage experiment, the durability experiment, the stroke experiment, the response frequency experiment, multiple experiments such as step experiment. For each experiment, various experiment action processes and experiment parameters can be manually selected and set in advance, and specific test parameters can be set for specific hydraulic cylinders. The DAQNavi _ Polymorphic _ VI is in real-time communication with the data acquisition card, configuration of each experimental parameter and experimental process of the hydraulic oil cylinder is achieved through labVIEW application software, flow control of each experimental process is achieved, real-time collection, low-pass and smooth filtering processing, linear engineering quantity conversion, real-time dynamic data and curve display and storage of each experimental data such as pressure, flow and displacement are achieved, generation and printing of various experimental reports are achieved, data on the industrial personal computer are displayed through the display screen, and operation and understanding of workers are facilitated.

The measurement and control cabinet comprises an analog quantity data output card, a signal isolation module, an analog quantity data acquisition card and a level conversion and hardware filtering component, wherein the analog quantity data acquisition card adopts a multifunctional data acquisition card. The analog quantity data acquisition card is connected with the level conversion and hardware filtering component. The analog quantity input adopts a differential access mode, high-precision reading of data is realized, level conversion is realized for converting 4-20ma analog quantity current signals such as pressure and flow into 1-5VDC voltage signals, and reliability and accuracy of analog quantity data transmission are realized through input and output signal isolation and hardware filtering.

The electrical control cabinet comprises a PLC module, a control power supply, a button and a switch, an intermediate relay, an indicator light and an audible and visual alarm device, the control power supply, the button and the switch, the intermediate relay, the indicator light and the audible and visual alarm device are all electrically connected with the PLC module, the PLC module controls and operates the connected devices, three test tables respectively comprise a proportional overflow valve, a proportional reversing valve, a hydraulic oil distributing way and an oil distributing way sensor, the oil distributing way sensor detects and records data on the three test tables, the oil distributing way sensor is electrically connected with a level conversion and hardware filtering component, the level conversion and hardware filtering component enable the measured data of the oil distributing way sensor to be more accurate, and interference of external factors is prevented.

The proportional overflow valve, the proportional reversing valve is electrically connected with the signal isolation module, the limit isolation can isolate external interference factors, the branch oil path sensor comprises 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 path, the proportional overflow valve and the proportional reversing valve control the hydraulic branch oil path, the hydraulic cylinder is rapidly detected, the main oil source component comprises an electromagnetic valve, an oil pump, a hydraulic main oil path and a main oil path sensor, the electromagnetic valve is electrically connected with the intermediate relay, the main oil path sensor comprises a pressure sensor, a flow sensor and a temperature sensor, data in the main oil source can be known in time through the sensors, and the electromagnetic valve is mechanically connected with the hydraulic main oil path.

The utility model discloses in, including the operation panel, the measurement and control cabinet, the electrical control cabinet, three laboratory bench and pressure, the displacement, speed, temperature secondary display instrument, three laboratory bench can test three different pneumatic cylinders simultaneously, including display screen and industrial computer on the operation panel, and industrial computer and display screen are the electricity and connect, the data display on the industrial computer is shown to the display screen, install labVIEW application software on the industrial computer, through DAQNavi _ Polymorphic _ VI and analog quantity data collection card real-time communication, through labVIEW application software, realize the configuration of each experimental parameter of hydraulic cylinder and experimentation, realize the flow control of each experimentation, realize the real-time collection of each experimental data such as pressure, flow, displacement, low pass and smooth filtering processing, linear engineering quantity transform, real-time dynamic data and curve display, the storage, with the generation and the printing of various experimental reports, including analog quantity data output card in the measurement and control cabinet, The system comprises a signal isolation module, a data acquisition card, a level conversion and hardware filtering component, wherein the signal isolation module and the level conversion and hardware filtering component ensure the reliability and accuracy of data transmission, an analog quantity data output card is connected with the signal isolation module, the signal isolation module ensures the accurate output of analog quantity data, the data acquisition card is connected with the level conversion and hardware filtering component, three experiment tables are respectively provided with an oil distribution line sensor, a proportional reversing valve, a proportional overflow valve and a hydraulic oil distribution line, the oil distribution line sensor comprises a pressure sensor, a flow sensor and a displacement sensor, can detect the data of a hydraulic cylinder and acquire the experimental data of each hydraulic cylinder in real time, an electric control cabinet comprises a PLC (programmable logic controller) module, a control power supply, a button and a switch, an intermediate relay, an indicator lamp and an audible and visual alarm device, the control power supply, the button and the switch, indicator lamp and audible and visual alarm device all are connected with the PLC module electricity, and the PLC module is operated the device of connecting, and main oil source part includes solenoid valve, oil pump, hydraulic main oil circuit and main oil circuit sensor, solenoid valve and hydraulic main oil circuit mechanical connection, and opening and the segmentation main oil control of solenoid valve direct control hydraulic main oil circuit, various data in the main oil circuit are detected to main oil circuit sensor to in time gather and detect.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims (7)

1. The utility model provides a pneumatic cylinder laboratory bench system of observing and controling which characterized in that: the device comprises an operation table, a measurement and control cabinet, an electrical control cabinet, three experiment tables and a main oil source component, wherein the operation table comprises a display screen, an industrial personal computer and a secondary display instrument, the industrial personal computer and the display screen are electrically connected, the measurement and control cabinet comprises an analog quantity data output card, a signal isolation module, an analog quantity data acquisition card, a level conversion and hardware filtering component, the analog quantity data output card is connected with the signal isolation module, the analog quantity data acquisition card is connected with the level conversion and hardware filtering component, the electrical control cabinet comprises a PLC (programmable logic controller) module, a control power supply, a button and switch, an intermediate relay, an indicator lamp and an acousto-optic alarm device, the control power supply, the button and switch, the intermediate relay, the indicator lamp and the acousto-optic alarm device are electrically connected with the PLC module, and the three experiment tables respectively comprise a proportional overflow valve, a proportional reversing valve, The main oil source component comprises an electromagnetic valve, an oil pump, a hydraulic main oil way and a main oil way sensor, and the electromagnetic valve is mechanically connected with the hydraulic main oil way.

2. The hydraulic cylinder laboratory bench measurement and control system of claim 1, wherein the main oil line sensor comprises a pressure sensor, a flow sensor and a temperature sensor.

3. The system according to claim 1, wherein the oil distribution path sensor comprises a pressure sensor, a flow sensor, a displacement sensor and an electronic balance sensor.

4. The hydraulic cylinder experiment table measurement and control system according to claim 1, wherein the proportional overflow valve and the proportional reversing valve are electrically connected with the signal isolation module.

5. The hydraulic cylinder laboratory bench measurement and control system of claim 1, wherein the solenoid valve is electrically connected to an intermediate relay.

6. The system according to claim 1, wherein the analog data acquisition card is a multifunctional data acquisition card.

7. The system according to claim 1, wherein the oil distribution path sensor is electrically connected to the level conversion and hardware filter assembly.

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