Preparation method of viscous anti-skid particles used in rail locomotives

Abstract

The invention discloses a preparation method of viscous anti-skid particles used in rail locomotives. According to the invention, a fluidized bed granulation device is adopted. Fine inorganic material powder is bound by using aqueous organic glue, such that anti-skid particles with a particle size of 400-800mum and have certain viscosity to rail and locomotive wheels are prepared. The viscous anti-skid particles are especially suitable to be used in train traveling in rainy and snowy weathers. During train high-speed travelling, wheel slippage can be reduced, and travelling speed can be ensured. During braking, braking time and braking distance can be reduced.

Description

technical field [0001] The invention relates to a preparation method of sticky anti-skid particles for braking anti-skid of rail locomotives. Background technique [0002] For locomotives running on rails, wheel slippage will occur in rainy and snowy days. At this time, the adhesion coefficient between the wheels and the rails decreases, and the wheels spin idling, which reduces the driving speed and cannot reach the predetermined driving speed. In addition, when the brakes are applied to stop the locomotive, the wheels will slip and cannot stop at the predetermined parking position, and the stopping time and stopping distance will be prolonged. In order to solve this problem, the current domestic locomotive anti-skid solution is to spread sand between the wheels and rails to prevent the wheels from slipping. Generally, trains use a primary type of sand spreading device, which is a simple structure consisting of a tank for storing sand and a conduit for letting the sand fal...

AI Technical Summary

Problems solved by technology

However, the disadvantages of the above-mentioned device include: (1) The particle size of the sand is relatively large, generally 1-3 mm, and the sand is sprayed onto the rails and quickly secondary broken. The secondary crushing causes the particles to splash to other places and deviate from the rails The intersection with the wheel cannot play a role; (2) The sand particles are too large, and it is difficult to be driven by air injection, so the sand often cannot enter the predetermined position according to the air injection trajectory, which also affects the effect; (3) Due to the above Disadvantages result in a large amount of sand and frequent sand replacement cycles; (4) The control device for anti-slip particles is mainly controlled by the train driver when needed.

The core of this device is to ensure that the anti-skid particles in the storage tank can be sprayed through the nozzle at any time without hindrance, but because the anti-skid particles used are inorganic particles with irregular shapes, their fluidity is not good, and uninterrupted flow is required. Air is introduced into the storage tank in a timely manner to ensure that the granular stone cave is in a quasi-fluidized state, so as to ensure smooth transportation during use

In addition, because it is a natural inorganic material particle, its brittleness is relatively high. After being sprayed between the rail and the wheel, it will easily be broken into smaller particles and sputtered out to lose its effect.

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