The microcomputer controlled anti bending and anti compression integrated machine is mainly used for compressive strength testing of cement mortar samples. It adopts a double column frame structure, with the upper pressure plate installed on the upper fixed crossbeam, and the lower pressure plate loading the sample upward under the action of the driving screw. The AC servo control and transmission system are installed at the lower part of the host. The testing machine adopts an AC servo speed control system, which controls high-precision and high-frequency AC servo motors to drive precision ball screw pairs for testing. It can achieve large-scale adjustment of testing speed, and the testing process is smooth and efficient.
Using a liquid crystal display controller, the experiment is conducted according to national standards, independently completing the setting of test parameters, control of the test process, data acquisition, processing, analysis, and display. It can achieve both single specimen testing and group testing, with precise, accurate, fast, convenient, and reliable control and measurement.
According to customer requirements, an external PC can be connected to collect and process test data, and then output and print various required test curves and reports. It can achieve storage, printing, and networking functions, which is intelligent and flexible.
It has the function of returning to the initial position after the experiment is completed, which is efficient and fast.
Equipped with limit protection and overload/overcurrent protection for the working position, reliable and safe.
Compared with the old-fashioned electro-hydraulic servo pressure testing machine, this testing machine has the following advantages:
a: The measurement range of experimental force is wider, more accurate, and more stable: due to the inherent zero position covering problem of electro-hydraulic servo control valves during static control (which is a characteristic of electro-hydraulic servo valves themselves), coupled with the sealing and friction problems of oil cylinders, the output (displacement and test force) near the zero position is not linear, and it is easy to crawl at low speeds, with poor stability and high initial pressure, making it impossible to achieve small deformation and small test force output control (the sample load is very small, which cannot be controlled using this method); By using an AC servo motor combined with ball screw control, there is no problem with the aforementioned electro-hydraulic servo control. In addition, high-precision load sensors are used to measure force, resulting in a wider, more accurate, and stable range of test force measurement.
b: The experimental process has low noise, and the noise of the AC servo motor is much lower than the working noise of the hydraulic pump
c: The control process is not affected by temperature, and the performance is more stable
d: No pollution caused by hydraulic oil running, emitting, dripping, or leaking
e: No servo valve stopped working due to contamination
f: The power and transmission system is more compact, the structure is simpler and clearer, and the reliability is greatly improved
g: Long term reliability, maintenance free (without the hassle of replacing hydraulic oil)
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