Electric forklift safety control method and control system

Abstract

The invention discloses an electric forklift safety control method which comprises the following steps that S1, a whole forklift is powered on, whether the lifting height of a portal frame exceeds the safety height or not is judged, if the lifting height does not exceed the safety height, S2 is executed, and if not, S3 is executed; s2, if the forward inclination switch or the backward inclination switch is turned on, whether the forward inclination angle or the backward inclination angle of the portal frame exceeds the safety angle or not is detected, if the forward inclination angle or the backward inclination angle does not exceed the safety angle, the normal inclination speed is maintained, and otherwise, the inclination speed is reduced; s3, the driving speed of the forklift and the lifting speed of the portal frame are reduced, whether a pressure sensor is turned on or not is detected, if the pressure sensor is not turned on, the step S4 is executed, and if the pressure sensor is turned on, the step S5 is executed; s4, if the door frame is not opened, the inclination speed of the door frame is reduced; s5, if the portal frame is in the backward tilting state, the backward tilting speed of the portal frame is reduced; if the portal frame is in the forward inclination state, the forward inclination speed of the portal frame is reduced, and the forward inclination angle of the portal frame is limited, the speed regulation and leveling functions are achieved, the safety performance of the forklift is improved, and the operation difficulty of the forklift is reduced.

Description

technical field [0001] The invention relates to the technical field of forklifts, in particular to a safety control method and a control system of an electric forklift. Background technique [0002] At present, the number and types of forklifts at home and abroad are increasing, and the safety requirements of customers for forklifts are also getting higher and higher, especially those in the European and American markets. high. [0003] When stacking goods with a forklift, it is necessary to complete the stacking of goods by the staff's forward and backward tilting of the gantry and the leveling of the forks. Then, when the existing electric forklift tilts forward and backward, the gantry system has no end deceleration buffer. function, especially when the goods are easy to fall when leaning forward, there is no better protection for the safety of operation [0004] The fork of the existing forklift needs to manually adjust the control valve rod for many times to realize t...

AI Technical Summary

Problems solved by technology

[0003] When stacking goods with a forklift, it is necessary for the staff to perform operations such as tilting the mast forward and backward and leveling the fork to complete the stacking of the goods. Then, when the existing electric forklift tilts forward and backward, the mast system does not have a terminal deceleration buffer function, especially when the cargo is easy to fall when tilting forward, there is no better protection for the safety of the operation

[0004] The forks of existing forklifts need to be manually adjusted and manipulated the valve stem to achieve the horizontal position of the forks, so the forks are inconvenient to insert into the cargo pallet, thus increasing the difficulty for the staff to pick up the goods

[0005] When the forklift is full-loaded and high-level stacked, the existing forklift does not have the limiting function of the speed limit of the whole vehicle and the inclination angle of the mast. It is easy for unskilled users to tip over the goods or cause danger.

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