PURPOSE: To position a carriage both in the horizontal and the height directions at the same time so as to enable rapid positioning with simple and inexpensive constitution by arranging a plurality of positioning members on a floor surface and a plurality of lift mechanisms on the carriage, respectively.
CONSTITUTION: At the four corners of a carriage, lift mechanisms 10 for lifting them are arranged. And in the lift mechanism 10, a lift member 12 is screwed on a bearing 11 and the lift member 12 is elevated and driven by a motor. A cylindrical member 20 is attached at the lower end of the lift member 12, and the cylindrical member 20 is held by a guide holding cylinder 21. And a positioning member 22 is arranged corresponding to each of the lift mechanisms 10. The positioning member 22 is fixed to a mounting seat 23, and a flange part 22a as a supporting part is arranged at the bottom and a pin 22b projecting upward at the center, respectively. By this, the carriage can be positioned easily and rapidly by engaging each of the cylindrical members 20 with each of the pins 22b of each of the positioning members 22 one after another.
ISOZAKI HIROSHI
ICHIHASHI SATOSHI
| JPS6341343A | 1988-02-22 |