Crane auxiliary climbing control method, control system and auxiliary climbing system

Abstract

The invention relates to a crane-assisted climbing control method, a control system and an auxiliary climbing system. The crane-assisted climbing control method includes: when receiving an active charging instruction, according to the state of the accelerator pedal, the state of the gear position and the accumulator ( 3), the secondary element (2) will actively charge the accumulator (3) for use during climbing; when the energy release command is received, according to the state of the accelerator pedal and the gear position, The accumulator (3) releases the stored hydraulic energy to assist the engine (1) to drive. The method and system of the invention can improve the climbing ability of the crane, thereby optimizing the dynamic performance of the whole vehicle.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a crane auxiliary climbing control method, a control system and an auxiliary climbing system. Background technique [0002] With the rapid development of industrial technology worldwide, the increasingly serious environmental pollution and energy shortages have become the focus of people's increasing attention. Hydraulic hybrid power technology is considered to be one of the effective methods to solve the energy crisis and environmental pollution problems. Compared with oil-electric hybrid power technology, oil-hydraulic hybrid power technology has the advantages of convenient and fast energy supply, high power density of hydraulic transmission, and fast hydraulic accumulator. The advantage of strong charging and fast discharging ability can handle the energy conversion of high-power and high-frequency changes, and it can give full play to its advantages in complex working co...

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Problems solved by technology

[0004] Most of the existing hydraulic hybrid vehicles recover the braking energy through the braking energy recovery system for subsequent start-up, acceleration or normal operating conditions, and there is no research on the control method under the climbing condition

Moreover, there are few researches on hydraulic hybrid vehicles in China at present, and the energy control strategy generally adopts the power distribution strategy based on the universal characteristic curve of the engine, simply dividing the working state of the vehicle into hydraulic hybrid drive, engine drive and hybrid Drive three working conditions, without subdividing the system functions, and not involving the application of the hybrid system in climbing conditions, so as to improve the utilization rate of the system and the climbing ability of the vehicle

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