A multi-stage fusion braking control system and method for a straddle carrier

Abstract

The invention discloses a multistage fusion braking control system and method of a straddle carrier. The system comprises the straddle carrier, a pedal sensor and a control module; the straddle carrier is provided with two mutually-independent braking systems including the electric braking system and the hydraulic braking system; the pedal sensor transmits a pedal displacement signal of the straddle carrier; the control module draws curves about the running speed of the straddle carrier, the depth of a braking pedal and the actual load weight respectively, selects a minimum braking value according to the curves, and decides to use electric braking or hydraulic braking according to the braking value. According to the multistage fusion braking control system and method, electric braking andhydraulic braking are combined, and separately controlled according to the requirement of the straddle carrier for braking force, and the requirement of the straddle carrier for high braking performance response speed is met; meanwhile, the large braking torque can be provided, and the braking performance of the straddle carrier is guaranteed.

Description

technical field [0001] The present invention relates to a braking control system and method, more specifically, to a multi-stage fusion braking control system and method for a straddle carrier. Background technique [0002] The container straddle carrier is the main type of container handling equipment, and usually undertakes the horizontal transportation from the front of the wharf to the storage yard and the container stacking work in the storage yard. Because the container straddle carrier has the characteristics of flexible maneuverability, high efficiency, good stability, and low wheel pressure, it has been widely used. The container straddle carrier operation is very beneficial to improve the loading and unloading efficiency of the terminal front equipment. Since the appearance of the container straddle carrier in the 1960s, after decades of development, it has become the key equipment of the container terminal and the yard, just like the tire-type container gantry cr...

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Problems solved by technology

[0004] For the braking system of straddle carriers, electric braking has the advantages of fast braking response, high braking performance, and simplified structure of the braking system, and is suitable for unmanned straddle carriers. The mass is large, and the braking torque required for braking is large, and electric braking cannot provide a large enough braking torque (in the case of electric braking, decelerate to stop according to the acceleration distance, and the stopping distance is far greater than 10m without load, heavy load 16m technical parameter index)

Due to the high braking pressure and the large braking torque generated by hydraulic braking, hydraulic braking is often applied to heavy machinery, but compared with electric braking, the braking response speed is slower, which cannot meet the requirements of the straddle carrier on the braking response speed. Require

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