Engineering vehicle throttle and traveling control system and method

Abstract

The invention discloses an engineering vehicle throttle and a traveling control system of an engineering vehicle, which is arranged as follows: when the traveling direction control solenoid valve is switched to the forward and backward states, the throttle opening is changed in proportion to the flow rate of the hydraulic fluid communicated with the traveling associated mechanism through the traveling control combination valve; and the traveling control solenoid valve is switched to the forward and backward states. In a parked state, hydraulic fluid flowing through the crane associating mechanism flows out through a combination valve return port arranged on the travel control combination valve. The invention also discloses a method adopted by the system. At that condition of acceleration and deceleration, the operator only need to step on the control part of the combine valve to realize that the bigger the throttle opening degree is, the more oil is supply to the hydraulic traveling system, and the faster the vehicle speed is, and simultaneously, the electromagnetic valve for controlling the traveling direction is controlled to be energized and deenergized to realize the entering,retreating and neutral states; and at the same time, the electromagnetic valve for controlling the traveling direction is controlled to be energized and deenergized. This kind of manipulation is morehumanized, can adapt to the driver's driving habits; especially suitable for complex road conditions, poor working environment operation, but also to further improve the driving, working and other conditions of comfort, safety.

Description

technical field [0001] The present invention is a divisional application of an invention patent application whose application number is CN201610796467.0 and whose application date is August 31, 2016, and which is named "accelerator and travel control combined valve assembly". [0002] The invention relates to a pedal of an engineering vehicle such as a wheeled excavator, in particular to an accelerator and travel control system and method. Background technique [0003] The current engineering vehicles such as wheeled excavators, in the driving state such as driving, parking, acceleration, deceleration, etc., the driver and the operator need to make corresponding operations in time and control the size of the accelerator to adapt to the changes in the driving state. Also need to do corresponding operation to hang gear, adjust steering wheel etc., not only inconvenient to operate, and operability also needs to be further improved. [0004] In the case of complicated road cond...

AI Technical Summary

Problems solved by technology

[0003] The current engineering vehicles such as wheeled excavators, in the driving state such as driving, parking, acceleration, deceleration, etc., the driver and the operator need to make corresponding operations in time and control the size of the accelerator to adapt to the changes in the driving state. It is also necessary to perform corresponding operations such as shifting gears, adjusting the steering wheel, etc., which is not only inconvenient to operate, but also requires further improvement in operability

[0004] In the case of complex road conditions and harsh working environments, this will bring great inconvenience to drivers and operators, and even affect safe production.

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