Automatic gear shift control system and method for electric fork-lift truck

Abstract

The invention discloses an automatic gear shift control system and method for an electric fork-lift truck. The automatic gear shift control system comprises a controller, an odometer, a rotating speed sensor, a combined switch and a relay. The automatic gear shift control system is suitable for an automatic gear shift system of the electric fork-lift truck; the system can be in a manual gear state or an automatic gear state; and the manual gear state and the automatic gear state of the system are switched over by the combined switch. Specific speed numerical values are respectively set for the system in the automatic gear state and the system in the manual gear state, and therefore, a driver can see the gear state and the current speed of the electric fork-lift truck on the odometer. The control system is simple in procedure, and is simple and convenient to operate when the driver drives the electric fork-lift truck. Different overspeed alarming values can be set by the system further according to a specific working environment, the working efficiency can be improved, and the safety during working can further be improved.

Description

[0001] technology neighborhood [0002] The invention relates to a forklift control system and a control method thereof, in particular to a control system for automatic gear shifting of an electric forklift. Background technique [0003] The driving motor of an electric forklift has a wider working range than the traditional internal combustion engine, and the characteristics of the motor's constant torque at low speed and constant power at high speed are more suitable for the operation needs of forklifts. The gearbox of the existing electric forklift cannot automatically adjust the gear position according to the current vehicle speed. It uses high torque to start or climb at low speed, and uses low gear to drive at high speed. It cannot be automatically switched, which greatly affects the operating efficiency of the motor. , serious power consumption. If too many gears are set, the structure of the electric forklift and the operation of the driver will become very complicate...

AI Technical Summary

Problems solved by technology

The gearbox of the existing electric forklift cannot automatically adjust the gear position according to the current vehicle speed. It uses high torque to start or climb at low speed, and uses low gear to drive at high speed. It cannot automatically switch, which greatly affects the operating efficiency of the motor. , serious power consumption

If too many gears are set, the structure of the electric forklift and the operation of the driver will become very complicated, and the volume and weight will be increased.

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