A tramway sand spreading system

Abstract

The invention relates to a sand scattering system for a tramcar and belongs to the field of rail vehicle brake system design. The sand scattering system comprises a compressor, a motor, a filter, a first check valve, a first exhausting electromagnetic valve, a pressure switch, a safety valve, an air cylinder, a pressure meter and a control unit. The motor is connected with the compressor. An air inlet of the compressor is connected with the filter. An air outlet of the compressor is sequentially connected with the first check valve and the air cylinder through pipelines. The air cylinder is connected with two sand scattering devices through pipelines. The exhausting electromagnetic valve is arranged between the compressor and the pipeline of the first check valve. The pressure switch, the safety valve and the pressure meter are connected to the air cylinder through pipelines respectively. The control unit is in control connection with the motor, the pressure switch and the exhausting electromagnetic valve. The system is short in response time and uniform in sand scattering and has the recording function; and meanwhile, the sand scattering system is applied to the two sand scattering devices, and therefore the purchasing cost of the sand scattering devices is reduced.

Description

technical field [0001] The invention relates to a sand spreading system suitable for tramcars, which belongs to the field of rail vehicle brake system design. Background technique [0002] The sanding system is used to improve the adhesion between the wheel and the rail, so that the tram can stop quickly and avoid wheel sliding and abrasion. At present, the mainstream tram sanding system is composed of an air source and a solenoid valve. The system is simple, the amount of sand cannot be adjusted, the system response time is long, the sand is not uniform enough, and there is no recording function. One set of sand spreading device increases the purchase cost of the sand spreading device. In view of the shortcomings of the current sand spreading system, a new sand spreading system was invented, which can be applied to two or more sets of sand spreading devices. At the same time, it has short system response time, uniform sand spreading, recording function, and greatly reduces...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the unadjustable sand quantity, long system response time, uneven sand spreading and no recording function in the existing sand spreading system, and at the same time, it also limits the application of one set of sand spreading system to one set of sand spreading device, which increases the purchase cost of the sand spreading device and other issues

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