ZMH2115 Proportional Hydraulic Trainer Hydraulic Training Equipment
Educational Equipment
1. Overview
The electro-hydraulic proportional hydraulic workbench is designed
according to “Hydraulic drive and control”, “Hydraulic proportional
control technology”, “Hydraulic servodrive and control” and other
hydraulic teaching materials of institutions of higher learning and
higher vocational training school. The workbench can fully meet
requirements of teaching, students’ practicing and training, and
scientific research aiding, the hydraulic proportional teaching
workbench is specially designed from basic to advanced, from
teaching to scientific research.
2 Main performances and features
1. It has full function of an intelligent hydraulic transmission
workbench, and it is added a electro-hydraulic proportional
control, which improves hydraulic transmission teaching.
2. It is equipped with high-precision flow sensor, rotate speed
sensor, temperature sensor, power sensor, displacement sensor,
pressure sensor and so on, which is for meeting test requirement of
various performance parameters.
3. High performance data acquisition hardware system consists of
High-accuracy, multi-channel, high transmission rate, high response
rate, and other AD data acquisition card, DA output control card,
PCI data transmission cable, anti-interference amphenol connector,
etc. It has good late developing and extended function.
4. Professional developing data acquisition software not only can
achieve data acquisition, analysis, process, digital display, curve
auto generating and real time monitoring function, but also can
output proportional performance test required step signal, square
signal, sine wave signal, sawtooth signal, high-frequency signal,
low-frequency signal and other output control functions.
5. 20 visualization hydraulic simulating control circuits that can
directly reflect hydraulic circuit’s working condition, PLC working
condition and inner structure and principle of various hydraulic
components, and can directly conduct real-time control hardware
circuit for upper computer at the same time.
3 Experimental project
1 Performance test for hydraulic pump
2 Test for dynamic and static performances of overflow valve
3 Test for dynamic and static performances of reducing valve
4 Load performance test for throttle valve
5 Load performance test for speed control valve
6 Upload performance test for hydraulic cylinder
7 Performance test for hydraulic motor
8 Performance test for flow differential pressure of thin-wall hole
9 Performance test for flow differential pressure of long and thin
hole
10 Performance test for flow differential pressure of concentric
ring gap
11 Control performance test for proportional overflow valve
12 Load performance test for proportional overflow valve
13 Dynamic performance test for proportional overflow valve
14 Control performance test for proportional direction valve
15 Throttle performance test for proportional direction valve
16 Dynamic performance test for proportional direction valve
17 Performance test for electromagnetic proportional position
control system
4. Hydraulic experiment
1 Basic pressure control circuit (single stage pressure regulating,
multistage pressure regulating, pressure reducing, balance,
pressure maintaining, pressure relief, etc)
2 Speed control circuit (throttle valve, speed control valve,
differential motion, volume, combination, etc)
3 One-way synchronizing circuit (throttle valve, speed control
valve controlled synchronizing circuit)
4 Direction control circuit (reversing valve controlled reversing
circuit)
5 Sequential action circuit (sequential action circuit controlled
by pressure reply, travel switch, sequence valve, etc)
6 Locking circuit (locking circuit controlled by pilot operated
check valve, O/M reversing valve, check valve, etc)
7 Experiment of pressure stability control circuit of
electromagnetic proportional overflow valve
8 Pressure control system of electromagnetic proportional overflow
valve
9 Reversing circuit of electromagnetic proportional direction valve
10 Speed control circuit of throttle characteristic of
electromagnetic proportional direction valve
11 Position control experiment of hydraulic cylinder of
proportional control system
12 Simple hydraulic closed-loop control experiment of proportional
system
