Diesel locomotive driver controller with load protection function

Abstract

An internal combustion locomotive driver controller having a loading protective function. Said driver controller is provided with traction gears, braking gears and a locomotive idle gear; the traction gears include a first traction gear (1), a second traction gear (2), a third traction gear (3), a fourth traction gear (4) and a fifth traction gear (5) from low to high according to the speed of the locomotive; the braking gears include a first braking gear (1'), a second braking gear (2'), a third braking gear (3') and a fourth braking gear (4') from small to large according to the braking force of the locomotive; the locomotive idle gear (IDLE) is provided between the first traction gear (1) and the first braking gear (1'); a traction presetting gear (TR) with a gear-shifting loading protective function is provided between the first traction gear (1) and the locomotive idle gear (IDLE); a resistance braking presetting gear (DB) having an operation condition conversion protective function is provided between the first braking gear (1') and the locomotive idle gear (IDLE). The internal combustion locomotive driver controller having a loading protective function can greatly reduce accidents caused by the misoperations of a driver, protecting main devices of the locomotive to the maximum extent, ensuring that the locomotive has better reliability and security.

Description

technical field [0001] The invention relates to a driver controller, in particular to a driver controller for a diesel locomotive with a loading protection function, and belongs to the field of diesel locomotives. Background technique [0002] The console of the diesel locomotive is usually equipped with a driver controller, through which the driver can realize functions such as loading the locomotive, switching between traction or resistance braking conditions, and adjusting the speed of the diesel engine. [0003] Before the locomotive is running, the driver needs to raise the handle of the driver controller from the "idling" position to the "loading" position or "traction" position, and then the corresponding logic circuit will realize the action of the relevant contactor to make the excitation circuit and the main circuit closed. loop, which completes the load. [0004] Traditional driver controller usually has "traction 5" - "traction 4" - "traction 3" - "traction 2" -...

AI Technical Summary

Problems solved by technology

[0008] Although this driver controller scheme is a traditional design in the field of diesel locomotive electrical systems, in actual application, it is inevitable that accidents will occur due to driver misoperation or unconventional operation.

For example, the driver may directly switch the driver's controller from the "idling" position to the "traction five" position. At this time, the locomotive microcomputer will adjust the power of the locomotive to the highest according to the instruction. At this time, the speed of the diesel engine is due to mechanical inertia and other factors. Otherwise, it cannot be quickly adjusted to the highest speed, which will directly lead to the occurrence of overload and black smoke.

Or when the driver switches the "traction 5" position directly to the "brake 4" position, the working condition transfer switch needs to be transferred immediately, but there is still residual current in the main circuit, which will directly cause the main contact of the transfer switch to be damaged. Burning due to arcing phenomenon

Therefore, this traditional design scheme has serious safety hazards

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