Sand spreading device of bullet train unit

Abstract

A sand spreading device of a bullet train unit is installed on a bogie frame of the bullet train unit, a speed governing motor drives belt pulleys to transmit power to a sand stirring mechanism and a sand conveying mechanism; a baffle driven by a pneumatic cylinder is installed between a sand box and the sand conveying mechanism, and the baffle and the sand box form a cabin door mechanism; when sand needs to be spread, the baffle can be slidingly opened in advance, so that the sand can enter the sand conveying mechanism; when sand spreading is completed, the baffle can be slidingly closed, the sand and the sand conveying mechanism are separated, and subsequent cleaning of the sand conveying mechanism is facilitated; the sand stirring mechanism is of a screw panel sleeve structure, sand stirring performance is good, and axial force is small; a heating device is installed between the sand stirring mechanism and a cabin door structure and used for heating the conveyed sand in time and sufficiently; a position sensor detects positions of the sand in the sand box and send control signals out; a temperature sensor monitors temperatures of the sand in the sand box; and the sand conveying device is of a double-screw-panel sleeve structure, and a sand stirring function is further achieved. The sand spreading device of the bullet train unit has the advantages that the volume is small, anti-block functions of the sand stirring mechanism and the sand conveying mechanism are achieved, and cleaning is easy.

Description

technical field [0001] The invention relates to mechanical equipment for a sand spreader, in particular to a sand spreader for an EMU, which belongs to the field of on-board equipment for locomotives. Background technique [0002] The environment around railway tracks plays an important role in the safe operation of railway vehicles, including ice, snow, water stains and other debris. When the debris in these environments adheres to the surface of the rail, it will cause the adhesion of the wheel and rail to decrease, causing the wheel to slide, and scratches on the wheel, rail and wheel, which will have a certain impact on the safety of train operation and passenger comfort. Therefore, how to ensure the contact adhesion between the wheel rail and the wheel is very important. Sprinkling a layer of uniform sand on the surface of the wheel rail is an important means to improve the adhesion, especially for high-speed EMUs running at high speed. [0003] With the development of...

AI Technical Summary

Problems solved by technology

Although this structure has the advantages of not being easy to block the channel, it also has obvious shortcomings, including the control of sand discharge speed and the inability to ensure uniformity.

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