Working principle of pressure testing machine

The working principle of the press: The motor drives the oil pump, and the hydraulic oil in the oil tank is sent to the oil delivery valve through the oil pump, and then enters the oil cylinder and the force measuring cylinder through the oil return valve. After the force passes through the thallium distribution, the pendulum device is driven to obtain an accurate force value.

Pressure installation method: It is best to put out the samples according to the foundation map and lay the foundation. Because of its small size, light weight, and no large vibration when working, as long as the ground concrete layer is not above 10cm, there is no problem. Use random The delivered oblique iron adjusts the level of the machine. It is adjusted in the same way as the universal machine, plus the randomly distributed hydraulic oil, drain the air of the oil pump, connect the power supply, see if the motor rotation direction is correct, test the pressure to see the pendulum device Whether the movement is normal and flexible.

The operation method of the press: select a certain range according to the pressure of the test piece, adjust the buffer valve (at the upper left of the tank), the adjustment method is the same as that of the universal machine, and select the length of the upper platen according to the sample size ( Replace the anti-bending device during the concrete anti-bending test), place the test piece, close the oil return valve, open the oil delivery valve, and start the test. After the test block is damaged, close the oil delivery valve, open the oil return valve, and remove the test Blocks, special pads should be used when pressing small test blocks.