An electric forklift gantry action control system

Abstract

The invention discloses an electric forklift gantry action control system, which is used in the technical field of forklift gantry control. At least one A port of a multi-way valve is used to communicate with a rodless cavity of a hoisting oil cylinder. When the controller receives a hoisting signal The controller opens the A port and controls the motor to drive the oil pump to rotate, so that the hydraulic oil in the hydraulic oil tank enters the rodless cavity of the lifting cylinder through the A port of the oil pump and the multi-way valve. Both increase gradually with the increase of the opening degree O of the controller; when the controller receives the hoisting signal and the opening degree O of the controller is less than or equal to O12, the total hydraulic oil flow of the oil pump controlled by the controller is greater than the passable flow of the multi-way valve; When the controller receives the hoisting signal and the opening degree of the controller O12<O≤100%, the controller controls the total flow of hydraulic oil to be less than the passable flow of the multi-way valve. Throttling speed regulation is adopted at low speed and volume speed regulation is adopted at high speed, which not only improves the fretting performance of the gantry movement, but also reduces the overall energy consumption.

Description

technical field [0001] The invention relates to the technical field of forklift gantry control, in particular to an action control system for an electric forklift gantry. Background technique [0002] In the prior art, the hydraulic oil flow provided by the controller to control the oil pump is always greater than the flow rate that the multi-way valve can pass through, resulting in waste of hydraulic oil and increased energy consumption of the entire vehicle; at the same time, the hydraulic oil flow is used to limit the movement speed of the gantry, The volume speed regulation of the oil pump is suitable for the quick action of the gantry, but it is difficult to realize the fine adjustment of the gantry action, and the fretting performance is poor. [0003] To sum up, how to improve the fretting capability of the forklift gantry motion control system and reduce energy consumption is an urgent problem to be solved by those skilled in the art at present. SUMMARY OF THE INVE...

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Problems solved by technology

[0002] In the prior art, the hydraulic oil flow rate provided by the controller to control the oil pump is always greater than the flow rate that can pass through the multi-way valve, resulting in waste of hydraulic oil and increasing the energy consumption of the vehicle; at the same time, the hydraulic oil flow rate is used to limit the movement speed of the mast, The volume speed regulation of the oil pump is suitable for the fast movement of the mast, but it is difficult to realize the fine adjustment of the mast movement, and the micro-movement performance is poor

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