1. The appearance of the main engine adopts streamlined appearance modeling design, the design intensity distribution of each component is reasonable, the surface spray metal paint, the overall combination is beautiful and generous;
2. The main engine adopts the under-cylinder structure, the height of the main engine is low, the test space layout is reasonable, and conforms to the ergonomic principle;
3. The worktable and the upper beam adopt the four-column and double-lead screw structure, forming the high stiffness test space;
4. The anti-wear plate is set between the relative sliding part between the clamping jaw plate and the beam to make the clamping jaw plate move smoothly and the sample clamping is firm and reliable, which is convenient for maintenance and replacement after long-term use.
5. Circular arc or straight groove connection type is adopted between clamp plate and clamp mouth, positioning is accurate and reliable;
6. The clamping of the sample adopts double sealed built-in clamping cylinder, with tight seal and no oil seepage.
7. The hydraulic system adopts the pressure-difference throttling speed-regulating servo servo system. The working pressure of the system is automatically adjusted with the change of load to reduce the system heating and save energy.
8. High pressure oil pump and motor directly connected structure, compact structure, smooth operation, low noise;
9. Oil source system is equipped with special servo valve, high control precision;
10. The load sensor is reasonably arranged between the working table and the piston to directly test the test force, so as to avoid the influence of the hydraulic sensor on the test result due to the piston friction of the cylinder and the change of oil temperature.
11. High-performance intelligent full digital controller, with full digital PID regulation, coupled with independent servo amplifier, measurement and control software and data acquisition and processing software, can achieve test force, sample deformation, piston displacement closed-loop control and smooth switching control mode; The system is composed of three signal conditioning units.Control signal generator unit, servo valve drive unit, servo oil source control unit, necessary I/O interface, software system, etc. Closed loop control loop of the system:The measuring sensor (load sensor, displacement sensor, deformation extender), servo valve, controller (each signal conditioning unit) and servo amplifier together form a number of closed loop control loops, realizing the closed-loop control function of test force, piston displacement of oil cylinder and sample deformation of the test machine. With the same rate test force, the same rate cylinder displacement, the same rate strain and other control modes, and can achieve smooth switching control mode, so that the system has greater flexibility. With network interface, it
12. The multi-function test software package can analyze and process the test results according to the requirements of different test methods. With powerful graphic operation function, it can display and draw test curve and display test data in real time, with functions of curve scaling, graph amplification and interception, and cursor following and displaying. VXDs high-speed data acquisition technology is adopted to realize multi-channel high-speed data acquisition. It can store complete test curve and test data. It has the functions of single test report output and batch test report output printing;
13. Safety protection device: it has the protection function of overload of test force, over setting, power cut and piston reaching the limit position.

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