Automobile flywheel fatigue fracture test bedstand

Abstract

The present invention provides an automobile flywheel fatigue fracture test bedstand. The automobile flywheel fatigue fracture test bedstand comprises a mechanical part and a control system; the mechanical part comprises a first servo motor, a test platform, an automotive flywheel, a translation actuator, a displacement sensor and a force sensor; the test platform is L-shaped and is fixed onto ground; the first servo motor is mounted on a side surface of the test platform; a movable adjustment test platform comprises a fixed layer and a movable layer; the movable layer of the mobile adjustment test platform is connected with the translation actuator; the force sensor is mounted between the movable layer and the translation actuator; a displacement sensor mounting platform is mounted on the test platform; the displacement sensor is fixedly mounted on the displacement sensor mounting platform; and the control system comprises a PLC and a monitoring computer. The automobile flywheel fatigue fracture test bedstand of the invention has a protection function and can monitor forces, torques and displacement in real time; the bedstand stops working when the forces, torques and displacement exceed limits, and therefore, test pieces and equipment can be protected.

Description

technical field [0001] The invention relates to the field of fatigue damage testing, in particular to an automobile flywheel fatigue damage test bench. Background technique [0002] As the world's energy crisis and environmental pollution problems become more and more serious, people have higher and higher requirements for automobile energy saving and emission reduction. It is an effective solution to use automobile flywheels to regulate automobile power and energy. The flywheel is an indispensable part in the composition of the car. The flywheel is a disc with a large moment of inertia, which is installed on the flange at the rear end of the crankshaft of the engine. The flywheel has a large moment of inertia. Since the work done by each cylinder of the engine is discontinuous, the engine speed also changes. When the engine speed increases, the kinetic energy of the flywheel increases to store energy; when the engine speed decreases, the kinetic energy of the flywheel de...

AI Technical Summary

Problems solved by technology

During the operation of the car, due to the rotation of the engine, the flywheel of the car will have a certain torque deformation, and its torque is within the range of ±5000N·M; as time goes on, the hydraulic torque converter will be heated and deformed, resulting in a 1-2mm Axial movement will cause extrusion force deformation to the automobile flywheel, and its extrusion force is in the range of 1000N to 2000N. These changes may affect the performance of the automobile flywheel's resistance to bursting speed, so the fatigue damage test experiment should be carried out on the automobile flywheel. According to the actual working conditions of the automobile flywheel, the fatigue damage test experiment of the automobile flywheel needs to be applied to the automobile flywheel at different speeds and axial feed movements at the same time. It is impossible to achieve high-frequency and high-precision control with general test methods, and it is necessary to invent a new one. test bench

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