Mechanical acceleration type locomotive tackifying and sanding device

Abstract

The invention discloses a mechanical acceleration type locomotive tackifying and sanding device. The device comprises a sand box, and a flow control valve is arranged at the joint of the lower end ofthe sand box and a funnel; the device further comprises an accelerator used for accelerating sand particles; the lower end of the funnel is connected to a sand inlet of the accelerator through a hose;the accelerator comprises an impeller and a branch grinding wheel arranged in the center of the impeller; a directional sleeve is arranged outside the branch grinding wheel; the accelerator further comprises a plurality of blade positioning sleeves which are uniformly arranged on the impeller, a plurality of through holes are formed in the blade positioning sleeves, and the through holes correspond to the positions between every two adjacent blades; a sand outlet is formed in the lower end of the accelerator and is connected with a nozzle; and the device further comprises a first motor used for driving the impeller to rotate. Viscous particles are sprayed out in an accelerated mode through the high-speed rotating impeller, so compared with a pressure type sanding device and a gravity typesanding device, the device of the invention achieves a higher sanding speed, can effectively avoid airflow interference in the high-speed running process of a locomotive, and improves the particle spraying efficiency.

Description

technical field [0001] The invention relates to the field of rail transit train auxiliary equipment, in particular to a mechanical acceleration type locomotive viscosity increasing and sand spreading device. Background technique [0002] In order to overcome the problem of low adhesion caused by pollutants such as water, oil, and leaves on the rail surface during locomotive operation, railways often use sand to increase the viscosity to increase the available adhesion coefficient between the wheel-rail interface. The sand spreading system is a very important part of the braking system of the rail vehicle. When the low adhesion problem occurs in the operation of the rail vehicle, a sand spreading device is required to accurately send the viscous sand particles into the wheel-rail interface. [0003] At present, most of the existing sand spreading devices adopt pressure type or gravity type sand spreading, relying on compressed air or the gravity of sand itself for sand spread...

AI Technical Summary

Problems solved by technology

Due to the low injection speed of sand particles in this type of device, it is difficult to effectively enter the wheel-rail interface under the interference of lateral air flow when the train is running at high speed to provide a viscosity-increasing effect

In addition, since the sanding amount cannot be adjusted and controlled accurately, when the train is running at a low speed, it is easy to produce excessive sanding, which will cause bad problems such as increased wheel-rail wear and circuit insulation between wheel-rail

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