Direct current oil-free brushless decompression pantograph rise pump

Abstract

The invention discloses a direct current oil-free brushless decompression pantograph rise pump which is composed of an oil-free brushless motor, a controller, a compressor, a valve, a decompression valve and a DC-DC power module. The oil-free brushless motor supplies power through direct current, and a motor output shaft is connected with the compressor. The output end of the compressor is connected with an output pipeline, the end of the output pipeline is connected with the valve, and the valve and the compressor are directly connected with the decompression valve through a three-way valve.In the use process, the oil-free brushless motor, the valve and the decompression valve are controlled by the controller, when pressure needs to be applied externally, the controller controls the oil-free brushless motor to operate, the compressor is driven to operate, at the moment, the valve is opened, the decompression valve is closed, when the required pressure value is reached, the oil-free brushless motor stops, the valve is closed, at the moment, the decompression valve is automatically opened, gas in the pipeline between the compressor and the valve is exhausted, and the compressor isdecompressed. A pantograph rise pump based on a brush direct current motor is free of overcurrent and overheating protection functions, a motor magnetic steel sheet is likely to be demagnetized afterthe motor is used for a long time in a high-humidity high-temperature environment, and thus a problem that the electrical performance of the motor is changed is generated.

Description

technical field [0001] The invention relates to a bow lifting pump equipment for rail transit, in particular to a DC oil-free and brushless bow lifting pump. Background technique [0002] At present, the lifting bow pump based on brushed DC motor is widely used in the industry. The lifting bow pump based on brushed DC motor has no overcurrent and overheating protection. It is easy to cause demagnetization of the motor magnetic steel sheet in high humidity and high temperature environment for a long time, and then As a result, the electrical performance of the motor changes, and the brushed DC motor needs to adopt a higher IP protection level, which not only plays a high role in dustproof and waterproof protection, but also makes the heat dissipation of the motor poor, so the working time is generally required to be less than 15 minutes on site. At the same time, due to the structural limitations of the brushed DC motor (collector rings and carbon brushes must be installed), ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a DC oil-free, brushless, pressure-relief lifting bow pump to solve the problems of high protection level and large starting torque of the existing brushed DC motor-based lifting bow pump

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