Force moment testing device of corner type electric actuating mechanism

Abstract

The invention relates to a moment measurement device of an angular electric actuator including a hydraulic pump, a hydraulic cylinder, a weighing transducer and a support platform; wherein, a piston rod is arranged inside of the hydraulic cylinder, one end of the piston rod is fixedly connected with the support platform, while the other end of the piston rod is connected with the support platform through the weighing transducer, the weighing transducer is connected with a computer; an output shaft of the angular electric actuator is fixedly connected with a sector gear, the hydraulic cylinder is fixedly connected with a linear rack matching with the sector gear; the hydraulic pump is connected with the hydraulic cylinder through a directional valve, a relief valve is arranged between the hydraulic pump and the directional valve. The invention replaces conventional poises with cylinder pressure, measurement of constant moment is actualized, and the invention can be applied to measure electric actuators of large moment. The invention is safe, convenient and labor-saving when in operation; computer technology is adopted in measurement data collecting which achieves intuition and verity in data observation and high measuring precision.

Description

(1) Technical field [0001] The invention relates to a torque testing device of a corner type electric actuator. (2) Background technology [0002] With the improvement of the precision of the industrial process measurement and control automation system, in order to reduce the energy consumption of the large-scale thermal power plant units, and the commissioning of the supercritical generating units, there is an urgent need for electric actuators with high torque and high precision for controlling valves. [0003] In the control system, the valve is controlled by controlling the electric actuator, and the parameters of the flowing medium in the pipeline are changed by the opening of the valve, so as to achieve the goal of control. Therefore, the electric actuator is the connection execution unit between the control system and the valve. It is an indispensable product in the industrial automation control system, and its performance testing is an indispensable technical means. ...

AI Technical Summary

Problems solved by technology

[0005] 1. During the test process, when the angle of the force arm changes from 0 to 90°, the measured torque value is different, and the constant torque detection cannot be realized in the whole stroke;

[0006] 2. During the testing process, for electric actuators of more than 5000N·m, weights of more than 500KG are required, which is inconvenient, unsafe, and labor-intensive to detect;

[0007] 3. Observe with the naked eye during the test, the detection accuracy is low, and the authenticity and reliability of the test data cannot be guaranteed

Images