Engineering machinery rotation brush performance test apparatus and method thereof

Abstract

The invention, which belongs to a rotation brush test technology field, discloses an engineering machinery rotation brush performance test apparatus and a method thereof. The test apparatus comprises: a machinery system, a pneumatic system and a computer control system. The machinery system comprises: a test apparatus support, a support plate, a vane-type pneumatic motor, an inductive switch, a turntable, a rotating cylinder shift fork and a pin. The pneumatic system comprises: an air inlet pipe, a two-position five-way reversing valve, an air filter, a pressure reducing valve, an oil mist device and a throttling valve. The computer control system comprises: a power supply, the inductive switch, a starting switch, a controller and a detection loop. An operation flow of a test method can be realized by using the test apparatus through computer control software. The test apparatus is used in the positive and reverse direction alternation rotation test of the rotation brush. Through detecting a voltage drop, whether contact of the rotation brush is good or not can be effectively determined. Thereby, faults can be accurately discovered and a brush endurance test requirement can be satisfied.

Description

technical field [0001] The invention relates to a performance testing device and method for a rotating brush of a construction machinery, and belongs to the technical field of rotating brush testing. Background technique [0002] There are many interconnected electrical circuits between the chassis of construction machinery such as excavators and cranes and the upper vehicle. Since the chassis and the upper vehicle will have a relative slewing motion, in order to prevent the upper and lower connected electrical circuits from being twisted during rotation, The protection method of installing a rotating brush in the center of rotation to connect the circuit of getting on and off is generally adopted. In order to ensure the reliability of the rotating brush, according to the actual number of revolutions of the host product, it is necessary to carry out hundreds of thousands of forward and reverse operation tests on the rotating brush. [0003] At present, no one has developed ...

AI Technical Summary

Problems solved by technology

[0003] At present, no one in China has developed a rotating brush test method and its special test device. The existing technology usually uses a manual rotation method and a multimeter to measure whether the contact between the elastic brush and the rotating slip ring is reliable, but the durability of the rotating brush Performance, contact voltage drop and other properties cannot be measured. Therefore, in actual use, the faults of the rotating brush frequently occur, which often cause the main engine's electronic control system to fail to work normally, affecting work efficiency and maintenance costs.

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