Control system for lowering forklift lever

A system of controlling a lowering speed of a work lever of a forklift, comprising:

• a hydraulic motor connected to the work lever through a hydraulic line to transmit a power to the work lever;
• an electronic solenoid valve configured to control the hydraulic motor connected to the work lever;
• a weight sensor provided at one side of the work lever, the weight sensor configured to measure a weight of a load placed on the work lever, to convert the weight into a load voltage, and to transmit the load voltage corresponding to a measured value to a controller;
• and
• a controller configured to control an RPM of the hydraulic motor and to control a current amount applied to the electronic solenoid valve based on a maximum current determined with respect to the measured value transmitted from the weight sensor, such that a rate of change in a lowering speed of the work lever is unaffected by the weight of the load placed on the work lever,
• wherein the controller includes a preset table in which is stored a maximum current under a full load condition and a maximum current under a no-load condition that represent the determined maximum current for those respective conditions, and
• wherein the controller is configured to determine the maximum current where the work lever has a load less than a full load, between the maximum current under the full load condition and the maximum current under the no-load condition, according to the load voltage transmitted by the weight sensor.