Bidirectional speed regulation device for electric forklift

Abstract

The invention discloses a bidirectional speed regulating device for an electric forklift, which is characterized in that a telescopic shaft is movably inserted into a shell, one end of the telescopic shaft penetrates through the shell to enter a multi-way valve shell and is propped against one end of a multi-way valve core, and a permanent magnet of which two opposite end magnetic poles attract each other to establish a magnetic field is embedded and pressed on one section of side wall, positioned in the shell, of the telescopic shaft; the valve core of the multi-way valve pushes the telescopic shaft to move in the shell to change a voltage signal output by the circuit board. By the adoption of the technical scheme of the linear Hall sensor and the design of the non-contact relative position of the Hall element and the permanent magnet, the component structure is more compact, the size is smaller, and layout on a vehicle body is better facilitated; the device can realize two-way speed regulation, is used for being matched with an application scene of lifting and descending power generation speed regulation control of a forklift gantry and a large-flow multi-way valve core stroke action, and is used for acquiring stroke information of the multi-way valve core during two-way operation in real time so as to realize fine control of gantry action.

Description

technical field [0001] This patent application relates to the technical field of forklifts, in particular to a bidirectional speed regulating device for electric forklifts. Background technique [0002] With the popularization and application of electric forklifts, drivers require forklifts to have more and more fine-grained stacking maneuverability, which requires the selection of induction potentiometers that can match the multi-way valve spool and accurately sample. Under normal circumstances, the imported resistive linear potentiometer is used in the industry to connect with the spool of the mechanical multi-way valve, and the spool drives the potentiometer to move linearly, so as to obtain the analog output of the potentiometer and realize the lifting control of the forklift gantry. . This structure is basically realistic and popularized in the lifting control of electric forklift gantry. However, due to the small stroke of this type of imported potentiometer used in ...

AI Technical Summary

Problems solved by technology

However, due to the small stroke of this type of imported potentiometer used in the industry, it is only suitable for one-way speed regulation and small flow and other scenes with small valve chambers. When the forklift mast is lowered to generate power, speed regulation control and large flow multiple channels are required. It cannot be used when the stroke of the valve spool is large

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