Automatic testing device of performance of electromagnet for valve

Abstract

The invention discloses an automatic testing device of performance of an electromagnet for a valve, which comprises a workbench, a tension and pressure sensor, a displacement sensor, a hydraulic proportional amplifying plate, a slide block and a linear slipway which is fixedly connected with the workbench. The electromagnet to be tested is placed and fastened on the slide block; the slide block is in slide fit in the vertical direction of the linear slipway; the tension and pressure sensor is fixed on the workbench under the slide block; a touch rod of the tension and pressure sensor is positioned at the right lower part of an armature of the electromagnet to be tested; the displacement sensor is fixedly connected to the linear slipway; and the free end of a slide rod of the displacement sensor is fixed on the slide block. The automatic testing device also comprises a programmable logic controller, a data collecting card, a current sensor and an industrial control computer, wherein the programmable logic controller is electrically connected with the hydraulic proportional amplifying plate and an operating button on the workbench respectively; and the data collecting card is electrically connected with the displacement sensor, the tension and pressure sensor, the current sensor and the industrial control computer respectively.

Description

technical field [0001] The invention relates to the field of electromagnet performance testing, in particular to an automatic testing device for valve electromagnet performance. Background technique [0002] At present, in the automotive field, hydraulic solenoid valves are used in the actuators of electro-hydraulic control systems of automotive continuously variable transmissions. The hydraulic solenoid valves in the actuators of the electro-hydraulic control systems are generally electromagnetic proportional pressure reducing valves and electromagnetic proportional relief valves. , The accuracy of the electromagnetic proportional pressure reducing valve and the electromagnetic proportional overflow valve directly affects the performance of the continuously variable transmission of the car. The characteristics of the proportional electromagnet, one of the important parts of the electromagnetic proportional pressure reducing valve and electromagnetic proportional relief valv...

AI Technical Summary

Problems solved by technology

The detection device is not only complex in structure and bulky, but also has many human factors in the test with this detection device, and the test accuracy is low

In addition, the electromagnet is fixed on the electromagnet fixing plate by screws. When the next electromagnet is detected, it is necessary to use tools to remove the electromagnet fixed with screws, and then use tools to install the next electromagnet for detection, thereby affecting the electromagnet. The test speed increases the labor intensity of the testers

The valve electromagnet performance testing device is not suitable for mass testing of valve electromagnets

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