Damping system for forward gantry of electric forward forklift

Abstract

The invention discloses a damping system for a forward gantry of an electric forward forklift, which comprises an oil tank connected with an oil inlet pipe and an oil return pipe, wherein the oil inlet pipe and the oil return pipe are both connected to a multi-way control valve which is externally connected with a forward cylinder, a gear pump is in external transmission connection with an electric motor and is arranged inside the oil inlet pipe, a two-position four-way solenoid valve is arranged inside a connecting pipeline between the multi-way control valve and the forward cylinder, a travel switch in control connection with the two-position four-way solenoid valve is arranged outside a piston rod of the forward cylinder, and when the two-position four-way solenoid valve is powered on, the two interfaces of the two-position four-way solenoid valve are communicated with each other. The problems of poor stacking safety and long storage time caused by the long-time vibration of the gantry of the electric forward forklift in the forward stacking operation process are solved. According to the damping system disclosed by the invention, the gantry can be quickly stabilized from vibration so that the amplitude of vibration can be quickly attenuated in an integrated mechanical-electrical-hydraulic manner on the basis of not influencing on the normal forward stacking operation of the electric forward forklift, so that the safety and storage efficiency of the forklift are greatly improved.

Description

technical field [0001] The invention relates to a forward-moving vibration-absorbing system of a mast frame of an electric forward-moving forklift. Background technique [0002] The electric reach truck is an all-electric forklift suitable for narrow shelf aisles and high-position stacking operations. Its maximum lifting height can reach 7200mm, and the mast has functions such as forward movement. Its design features effectively combine the advantages of counterbalanced forklifts and storage stackers. Due to the functional requirements and handling characteristics of the forward movement, it is required that the vibration of the mast should be eliminated as quickly as possible during the forward movement and stacking operation. However, due to the rigid locking characteristics of the forward cylinder itself, the vibration caused by the inertia of the mast cannot be eliminated for a long time. Today, the requirements for stacking safety and storage efficiency are increasing...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a system for moving the mast forward of the electric reach truck, in order to improve the safety of the stacking caused by the long-term vibration of the mast during the forward stacking operation of the electric reach truck, and the storage time is long. The problem is that the electric reach truck gantry forward vibration damping system of the present invention is a combination of electromechanical and hydraulic, and on the basis of not affecting the normal forward stacking operation of the electric reach truck, it realizes the rapid shutdown of the mast and the rapid amplitude attenuation

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