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 test device and method for a rotary brush of construction machinery, belonging to the technical field of rotary brush tests. Background technique [0002] There are many interconnected electrical lines between the chassis and the upper vehicle of construction machinery such as excavators and cranes. Due to the relative rotary motion between the chassis and the upper vehicle, in order to prevent the upper and lower connected electrical lines from being twisted during rotation, It is generally adopted to install a rotating brush in the turning center to connect the protection method of getting on and off the circuit. 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 conduct hundreds of thousands of forward and reverse alternating manipulation tests on the rotating brush. [0003] At present, no one in China has developed a...

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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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