Importance

Loading Importance Indicators...

Abstract

A control device for loading and unloading mechanism adapted to be incorporated in a fork lift truck comprises a sensor unit 100 including a lifting height sensor 102 and a load sensor 106, a control unit 200 comprising a control command producing circuit 240 constituted by a microcomputer 230 producing a control command on the basis of comparing calculation between the output of the sensor unit 100 and the concerned data stored in the microcomputer 230, a servomotor driving circuit 322' responsive to the control command indicative of a valve opening angle, and a hydraulic pressure driving circuit 340 for actuating a lift cylinder in accordance with the output of the servomotor driving circuit 322'. The control device is constituted so that, when the work for piling or unloading a load on a shelf is effected based on the stored lifting height data, the two positions required for piling and unloading can be stored in the same address allotted to the corresponding shelf can be stored. The control device is constituted so that, when lifting height data is stored in the microcomputer, an indication for confirming data storage is added to the stored lifting height data, thereby enabling to prevent an automatic lifting height control from being erroneously effected.

Loading the Abstract Image...

First Claim