This testing machine is produced and manufactured using electro-hydraulic servo technology, utilizing electro-hydraulic servo linear actuators for force application, and transmits torque to the test sleeve through force arms to complete the torsional fatigue test. The main components are as follows:

1. Constant pressure variable frequency servo pump station for increasing flow rate. Equipped with an oil-cooled unit.

2. Four-poster vertical main unit, actuator vertically positioned, temperature control environment box side door for easy sample clamping.

3. 10KN Linear Actuator, Servo Valve, Load Sensor, and Displacement Gauge

4. Pipe and connection components

5. Control Systems & Computer Software

6. Necessary workwear and fasteners

Explanation of Main Technical Parameters:

1. Actuator: The servo actuator with unitized, standardized, and modular design features low damping, high responsiveness, long lifespan, and large gap design. 1.1 The sealing elements of the servo actuator are all made of imported high-speed sealing elements specifically for servo actuators.

1.2 The servo actuator piston rod support breaks with traditional design, utilizing non-metallic support and a large gap design, featuring high-speed, non-welding, self-lubricating characteristics.

1.3 Design hydraulic cushioning zone at the amplitude limit position of the servo pendulum actuator to prevent damage from out-of-control operation.

1.4 Configured Dynamic Dedicated High-Response Test Machine Servo Valve

1.5 Displacement sensor for measuring displacement.

2. Variable Frequency Servo Pump: Equipped with an oil cooler, capable of reducing energy consumption.

2.1 The pump station features an elevated motor-mounted structure, offering a compact design. It is equipped with a low-noise, variable-frequency servo motor and a straight-coupled internal gear pump.

2.2 Features of Inline Mating Gear Pumps: Known as the "Worn Oil Pump" in the hydraulic industry, they are used in high-end, precision, and advanced hydraulic systems. Compared to vane pumps and plunger pumps, inline mating gear pumps offer lower noise, no pulsation, and longer service life.

Look forward to superior performance.

2.3 Low Noise: The straight-line integral internal gear pump boasts exceptional features with a special gear design, where the gear tooth profiles are straight and the annular tooth profiles form straight integral lines. It operates with minimal trapped oil areas, maintaining a stable and peaceful audio even at high speeds.

2.4 Longevity: The long service life of the inline gear pump with integral internal meshing is attributed to its wear resistance. An oil film protective layer is present between the internal mechanical surfaces and functional parts, resulting in minimal wear. Even with the use of general hydraulic oil, the machinery components are less prone to damage. Additionally, the double-stage pressure compensation principle not only increases the working pressure but also improves the pump's working conditions, thus extending the service life of the dead-end pump. The high and low-pressure soft switching hydraulic module consists of a main overflow valve, accumulator, auxiliary main overflow valve, auxiliary overflow valve, and directional control valve, all integrated with a domestically produced Wenzhou Liming precision oil filter with a maximum capacity of 3u. 2.5 Oil-cooled design, no need for additional cooling water, easy to use:

2.6 Imported German High-Pressure Hoses; Dual Electric Contact Temperature Controller; Level Controller; Features oil temperature (below 10°C, above 55°C), level, filter oil clogging alarm or stop function. 3. Control System and Computer Software System 3.1 Excavator Main Configuration: ... Computer Unit (Main Configuration, 19");

··Two-channel Signal Conditioning Unit (Force, Displacement);··Two-channel Signal Conditioning Unit (Force, Displacement);

Signal Generator Unit

Servo Valve Drive Unit

Servo Pump Station Control Unit

Essential I/O interface board

●·Test and Control Software System

3.2 Main display information is as follows:

Software Display: Load, Displacement, Test Count, Peak, Valley, Mid-value, Amplitude, etc.

Curve Display: Load, Displacement, Command Waveform

Adjustments include: actuator installation position adjustment, frequency adjustment, amplitude adjustment, offset adjustment, etc. 4. Main functions of the all-digital engraving machine:

4.1 The controller is based on PCI bus technology and features full digital control. It can achieve PID closed-loop dynamic test control for either the test force or displacement channel, meaning dynamic tests can be conducted with certain test forces or displacements, test frequencies, and signal types, or automatically controlled according to a user-defined spectrum (programmed control). Smooth transitions between control modes are possible during the test process. The controller also has comprehensive control capabilities for peripheral devices, including starting and stopping servo pump stations, switching between high and low pressure control, as well as completing functions such as sensor parameter calibration, zero-point clearing, parameter storage, and loading. The controller is equipped with functions for automatic shutdown or alarm when test parameters exceed limits or setpoints.

4.2 Software System:

· Under the Windows operating system platform, a full Chinese operating interface: user-friendly, with the working status displayed on the monitor and capable of showing the current adjusted or monitored parameter status. Test parameters are set digitally; the main test functions have quick operation keys.

· Features various display modes, such as test次数, peak and valley values of various test parameters, real-time values, median, etc. The computer screen displays test data like force, displacement, frequency, and automatically plots various test curves such as time-force/displacement, force-displacement (P-8).

Automatically process data

The software also offers data analysis capabilities, meeting the requirements of testers for trial analysis and special test data processing.

··Utilizing high-speed data collection technology for multi-channel rapid data acquisition: The system features comprehensive file operation capabilities for storing test curves and data; Additionally, test data can be stored in ASCII format for user convenience in secondary data processing!··Equipped with test report generation and printing functions;

··The machine features an automatic shutdown function after running for the set number of tests.

The force value is calibrated with step processing on the load sensor, catering to customers' fatigue tests under various force levels.