Asphalt mixture performance testing machine

Abstract

The invention discloses an asphalt mixture performance tester, including a machine body, a hydraulic system and a control system. The machine body is provided with an upper loading platform and a lower loading platform. The asphalt mixture test piece to be tested is placed on the lower loading platform and clamped between the upper loading platform and the lower loading platform. The hydraulic system includes a hydraulic station, a hydraulic cylinder and a high-frequency solenoid valve. The hydraulic station provides hydraulic power for the hydraulic cylinder. The high-frequency solenoid valve controls the movement direction of the hydraulic cylinder. The piston rod of the hydraulic cylinder is connected to the lower loading platform and can drive the lower loading platform to move up and down. The control system includes a control card, a controller and a sensor. The controller is connected to the control card for communication. The control card is connected to the high-frequency solenoid valve for communication. The sensor is arranged on the action component and the test piece. The controller sends an action instruction to the high-frequency solenoid valve through the control card and receives the feedback value of the sensor at the same time, so that the control system forms a closed-loop control of the signal. The invention controls the hydraulic cylinder through the control card and the high-frequency solenoid valve to improve the accuracy of the test data.

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