Automatic control device for locomotive sand scattering

Abstract

The invention discloses an automatic control device for locomotive sand scattering, and belongs to the technical field of railway locomotives. The device comprises an electric control box and a sub-control box; an air pressure sensor and a sand scattering electric pneumatic valve are arranged in the sub-control box, and the sub-control box is provided with an air path inlet, an air path outlet anda circuit interface; and a DC converter, a control module and a sand scattering relay are arranged in the electric control box, the electric control box is provided with a power supply interface, a sensor connection interface, an electric pneumatic valve connection interface, a vehicle speed signal interface and a sand scattering signal interface, and the control module is used for executing an automatic control program. According to the device, the structure is simple, the design is ingenious, the implementation is easy, the improvement of the automation level of an existing locomotive sandscattering system is facilitated, and then the stability and safety of the locomotive operation are improved; and meanwhile, an existing locomotive can be conveniently transformed and upgraded by using the device, so that the device has extremely strong application prospect and economic benefit.

Description

technical field [0001] The invention relates to an automatic sand spreading control device for locomotives, which belongs to the technical field of railway locomotives. Background technique [0002] When the locomotive is being towed, if the force of the driving wheel is greater than the adhesion force, the wheels will idling on the rail, causing the traction force of the locomotive to drop sharply or even disappear. In severe cases, the traction motor will fail. [0003] The adhesion between locomotive wheelset and rail is affected by many factors. When the locomotive needs to increase the traction force when the traction train starts, accelerates, runs over slopes, etc., especially when it is running under the conditions of frost, snow, ice, water, oil, wheel tread out of round, rail damage, axle load transfer, etc. , Idling and skidding are prone to occur between the wheels and rails, and the traction force of the idling axle will drop sharply, which will affect the trac...

AI Technical Summary

Problems solved by technology

But in the actual operation process, even experienced and high-level drivers are difficult to achieve such ideal sanding results

If the amount of sand sprinkled is too small, it will not be able to provide sufficient friction; if the amount of sand sprinkled is too large, it will not be able to effectively solve the idling of the wheels, but will increase additional resistance and bring many adverse consequences

In addition, when the emergency braking locomotive is about to stop, the excessive amount of sand sprinkled will also increase the resistance when the locomotive is started again

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