Automatic control system for left and right tracks to travel synchronously

Abstract

The invention discloses an automatic control system for left and right tracks to travel synchronously better suitable for equipment having relatively high requirement on straightness during traveling. The automatic control system comprises a control handle, a programmable controller PLC, a proportional valve, a left hydraulic motor, a left track traveling mechanism, a left incremental encoder, a right hydraulic motor, a right track traveling mechanism and a right incremental encoder; the control handle is electrically connected with the programmable controller PLC; the programmable controller PLC is electrically connected with the proportional valve; the output end of the proportional valve is divided into two branches, and one branch is orderly connected with the left hydraulic motor and the left track traveling mechanism, while the other branch is orderly connected with the right hydraulic motor and the right track traveling mechanism; the signal output end of the left hydraulic motor is electrically connected with the programmable controller PLC by use of the left incremental encoder; the signal output end of the right hydraulic motor is electrically connected with the programmable controller PLC by use of the right incremental encoder; the proportional valve is electrically connected with the programmable controller PLC by use of two branches of currents simultaneously.

Description

technical field [0001] The invention relates to a mechanical control system, in particular to an automatic control system for synchronous walking of left and right crawler belts in a crawler belt traveling mechanism. Background technique [0002] At present, the crawler traveling mechanism is widely used on large-scale mechanical equipment, especially heavy-duty mechanical equipment in railway construction, such as bolter, etc. Most of these equipment use two crawlers on the left and right to realize walking. There is no special requirement for the synchronous walking of the left and right crawlers, and the operator maintains the straight running of the left and right crawlers by manually adjusting the control handle. further combined with figure 1 , the control system for synchronous walking of the left and right crawlers in the prior art includes a left control handle 01, a left hydraulic motor 02, a left crawler traveling mechanism 03, a right control handle 04, a right ...

AI Technical Summary

Problems solved by technology

However, the applicant of the present invention has found that this control system in the prior art has the following disadvantages: due to the unequal magnitude of manual control force, the purpose of synchronization cannot be achieved, although the prior art still uses an angle encoder to measure the left and right The deflection angle of the beam is adjusted by calculating the difference between the left and right walks to make up for the lack of manual adjustment. However, it is finally realized through the manual operation of the operator. Obviously, the manual operation mode requires equipment with high straightness requirements. The control method obviously cannot meet the requirements of use

Images