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??天天电玩城?? Teaching Equipment

JGDB-DY01 Electro- hydraulic Proportion Comprehensive Experiment Bench


The electro-hydraulic proportional comprehensive test bench can complete the design, creative and comprehensive experiments of the hydraulic transmission course, understand the composition, working principle and correction method of the hydraulic proportional position control system, and the control characteristics of the electro-hydraulic proportional valve, and master the dynamic analysis of the control system Principles and test methods of time domain parameters, in-depth understanding of the influence of the structure parameters of digital PID controllers on the dynamic performance of the system, and it is especially suitable for students to build hydraulic drive systems, computer-aided test systems, programmable control systems and computer control systems. The unit comprehensive design experiment is a powerful assistant for scholars, experts, and engineering technicians in the hydraulic discipline.

Performance and characteristics
1. The hydraulic pump station consists of a fixed vane pump, a variable vane pump and an accumulator, and is combined with electrical control to automatically (human control) control the temperature of the working medium. There are multiple oil filters in the circuit, according to the model of the filter element. Different filtering precision can control oil precision more accurately.
2. The experimental operation platform uses steel plate as the support panel, which is divided into two parts, the upper part is the display part (equipped with power meter, pressure gauge, digital display secondary instrument, etc.); the design hydraulic components required are installed on the lower part; Double-outlet cylinder with load pulley (for position control experiment of electro-hydraulic proportional directional valve and force control experiment of electro-hydraulic directional valve), and can be disassembled There are a total of 12 oil pipe connections, test interfaces and oil inlet and outlet interfaces; the water platform surface is made of steel plates suitable for experiments, which can prevent vibration and noise generated during experiments. A vertical hydraulic cylinder is installed on the side of the table (can be used for experiments of hydraulic pressure formation).
3, the electrical control system is built-in type, the strong electric part is installed in the hydraulic bench cabinet, the electrical operation panel is equipped with operation buttons, proportional amplifiers and secondary instruments, and is also equipped with a plug interface to the plc port. Easy maintenance. The testing computer is placed on the desktop.
4. The test software has powerful test functions and a variety of help. The software can display the hydraulic schematic diagram; test of pressure and flow characteristics; pressure and flow characteristic experiment structure table, pressure and flow characteristic experiment curve display, output experiment report (html format), delete experiment records, experiment result query, etc.
5, equipped with a variety of sensors, including pressure sensors, load cells, grating displacement sensors, temperature sensors, flow sensors, speed sensors, and is equipped with a programmable controller to meet the needs of various experimental parameter testing.

Control test system
1. The computer-controlled test system of the experimental bench consists of a computer, a data acquisition card, an interface board, a sensor, and a solenoid valve.
2. The interface of the system software is developed with LabVIEW from the American company NI. The software interface is intuitive, easy to operate, complete in functions, and interactive.
3. The control test system realizes the automatic data detection of laboratory parameters (pressure, flow, speed, temperature, displacement, etc.), automatic processing, storage, automatic generation of experimental reports and printouts.
4. The system can realize the automatic control of the loop solenoid valve, which improves the level of automation and intelligence of the operation of the test bench.
5. The system can simultaneously collect 16 channels of experimental data and control of 6 two-position solenoid valves.
Technical parameters Motor model: M5P4H523;
Rated power: 3.75kw;
Rated speed: 1440r / min (1 unit);
Rated power: 2.2kw;
Rated speed: 1440r / min (1 unit);
Variable vane pump: VD1-30F-A3;
Rated displacement: 16.7ml / rev;
Maximum working pressure: 7Mpa (1 unit);
Fixed vane pump: FA1-11;
Rated displacement: 11ml / rev;
Maximum working pressure: 7Mpa (1 unit);
Temperature controller: XMTD digital display regulator (1 set);
Dimensions: 1900 × 800 × 1800mm

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