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LWS-20A Electro-Hydraulic Servo Shock Absorber Test Machine

LWS-20A electro-hydraulic servo shock absorber fatigue testing machine adopts dynamic high frequency response actuator, full digital electro-hydraulic servo controller, advanced technology, stable performance, and is suitable for dynamic and static performance tests of various dampers, cylindrical shock absorbers and combined shock absorbers.

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Introduction

1. The LWS-20A electro-hydraulic servo shock absorber comprehensive testing machine mainly consists of a host (lower static pressure support actuator), a constant pressure servo silent pump station, a fully digital hydraulic servo controller, damper related testing software, fatigue test cooling device, necessary testing accessories and attachments, etc;
2. Host: The host is a double column gantry frame structure, with linear servo actuators placed below. Composed of moving crossbeam, crossbeam clamping relaxation mechanism, column, servo actuator, lifting oil cylinder, worktable, hydraulic clamping module and other parts;
3. The crossbeam is made of precision machined integral steel parts, with a built-in hydraulic clamping and relaxation mechanism. The crossbeam structure is lifted and lowered using hydraulic lifting and hydraulic clamping and releasing methods, adjusting the test space, making operation convenient, and fully ensuring the stability and reliability of the crossbeam during dynamic and static tests. At the same time, the crossbeam is locked in place in non test states.

Parameters

Parameter	Specification
Maximum Test Force	±20 kN, Accuracy: ±1%, Range: 2%-100% FS
Frequency Range	0.01 - 30 Hz
Maximum Linear Velocity during test	≥ 2 m/s
Actuator Stroke	±75 mm (Total stroke: 150 mm), Indication Accuracy: ±0.5% FS
Waveforms	Indicator diagram, Linear velocity, Sine wave, Half-sine wave, Rectangular wave, Square wave, Triangular wave, Trapezoidal wave, Static loading ramp, etc.
Constant Pressure Servo Pump Station	Pressure: 21 MPa, Flow Rate: 60 L/min, Motor: 25 kW
Accumulator for Indicator Diagram	Capacity: 16 L, Oil Storage Capacity: 3 L, Storage Cycle: 8 seconds (Meets one indicator diagram test)
Controller	Full Digital Hydraulic Servo Controller; Control Modes: Force, Displacement closed-loop control
Maximum Test Space (For shock absorber)	300 - 1000 mm
Data Processing	Computer screen display of test parameters, automatic plotting of test curves. Data processing meets the requirements of standards such as "Bench Test Method for Automotive Telescopic Shock Absorbers".
Host Dimensions (LWH, approx.)	1200 * 1000 * 2800 mm
Pump Station Dimensions (LWH, approx.)	1200 * 1000 * 1500 mm