Electric forklift solenoid valve control system

Abstract

The invention discloses an electric forklift solenoid valve control system. The electric forklift solenoid valve control system comprises a power supply and a motor controller, and further comprises asolenoid valve controller, wherein a UVW three-phase power supply output end of the motor controller is connected with a UVW three-phase power supply end of a pump motor; the power supply supplies power to the motor controller and the solenoid valve controller; a CAN-H port and a CAN-L port of the motor controller are connected with a CAN-H port and a CAN-L port of the solenoid valve controller through a communication line; the solenoid valve controller is connected with a descending proportional valve coil, an ascending proportional valve coil, a reward tilting proportional valve coil, a forward tilting proportional valve coil, a right-shifting proportional valve coil and a left-shifting proportional valve coil; and the motor controller is connected with an ascending / descending hall switch, a forward / reward tilting hall switch and a left / right shifting hall switch. The electric forklift solenoid valve control system can precisely control the opening size of the proportional solenoidvalves and rotation speed of a pump motor, and precisely controls action speed of a portal frame, so that operation of a driver is more precise, and operation conditions of a narrow reservoir region are met.

Description

technical field [0001] The invention belongs to the field of electric control systems for forklifts, and in particular relates to a solenoid valve control system for electric forklifts. Background technique [0002] Electric counterbalanced forklifts are now widely used in various manufacturing and logistics transportation enterprises. With the increasing demand for electric forklifts, the performance requirements of forklifts are also getting higher and higher. Among them, the stacking accuracy of forklifts is The requirements are becoming more and more precise. In the forklift system, the stacking function of the mast is the most important function, because many forklifts are now used in small storage areas, so there is a high requirement for the accuracy of the stacking, ordinary forklift mast system in addition to lifting Except for the analog signal, the rest of the functions are switch values, such as forward and backward tilt, left and right movement of attachments a...

AI Technical Summary

Problems solved by technology

In the forklift system, the stacking function of the mast is the most important function, because many forklifts are now used in small storage areas, so there is a high requirement for the accuracy of the stacking, ordinary forklift mast system in addition to lifting Except for the analog signal, the rest of the functions are switch values, such as forward and backward tilt, left and right movement of attachments are all switch signals, that is, the speed remains unchanged after triggering the switch signal, which cannot meet the higher requirements of precise stacking

For ordinary forklifts, the mast system is operated by the valve rod, and the same operation for a long time will make the driver tired; in order to improve the driver's operating comfort and improve the accuracy of the mast stacking function, there are It is necessary to design a control mode in which the operation is concentrated between the fingers and the speed of the mast function is adjustable. At present, there is no electric forklift with the function of the linear Hall sensor to control the solenoid valve.

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