A control device for shifting gears of a driving gearbox

Abstract

The invention relates to a control device for shifting of a gearbox for driving traveling. The control device comprises a shift signal detection circuit, an engine rotation speed signal detection circuit, a shift switch control circuit, a shift display circuit, a shift output control circuit, a programmable controller and an oil pump control circuit, wherein the shift signal detection circuit is used for detecting a shift signal of the gearbox, the engine rotation speed signal detection circuit is used for sampling a rotation speed signal of an engine, the shift switch control circuit is used for controlling the input and output of shifting, and the oil pump control circuit is used for receiving a control signal outputted by the programmable controller to enable an oil pump proportional amplifying circuit to output set current value, so as to control the displacement of a hydraulic pump. The control device has the advantages that as the programmable controller and the intelligent detection and control circuits are adopted, the design is novel, the structure is simple, the control performance is high, the reliability is high, and the like; the purpose of quick and safe shifting of the gearbox is realized; and the problems of difficult shifting, damage to gears, and the like caused by the defects of the prior art are effectively solved.

Description

technical field [0001] The invention relates to a gear-shifting control device, in particular to a gear-shifting control device for a gear box of a railway vehicle driven by hydraulic pressure. Background technique [0002] When a hydraulically driven railway vehicle runs by itself, it is necessary to shift gears to the driving gear box. Under the existing technical conditions, the driver usually adjusts the traveling handle manually, and the control signal of the traveling handle is input to the hydraulic pump to amplify the ratio. The proportional amplification plate controls the displacement of the working port of the hydraulic pump, thereby changing the relative position of the shift gear and the shift gear. When the two groups of gears are in the meshing position, the driver operates the shifting switch, and the shifting gear is shifted into the corresponding gear position, and the shifting operation is completed. The operation mode of manual shifting is not only great...

AI Technical Summary

Problems solved by technology

The operation mode of manual shifting is not only greatly affected by the proficiency of the driver, but also the meshing position of the shifting gear and the gear gear is uncontrollable, which increases the accidental shifting of shifting gears, and may even be affected by the driver's operation. Mistakes, causing the relative speed between the gears to be too large, resulting in tooth beating

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