Patent ID: 11878867
Assignee: MURATA MACHINERY, LTD.
Field: Handling (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A lifting and lowering transportation device capable of transporting articles between a plurality of delivery positions, the lifting and lowering transportation device comprising:
a plurality of transportation units; and
a controller configured or programmed to control the transportation units; wherein
each of the transportation units includes:
a lifting and lowering platform that can pass through the plurality of the delivery positions by moving along a circumferential track including a vertical track extending in a vertical direction, the circumferential track being common to the plurality of transportation units;
a driver to generate a driving force to move the lifting and lowering platform along the circumferential track; and
a circulator which is loop-shaped to circulate along a circulation track corresponding to the circumferential track by the driving force generated by the driver to move the lifting and lowering platform; and

the controller is configured or programmed to control circulation of the circulator in each of the transportation units independently with respect to the other transportation units such that a distance between adjacent lifting and lowering platforms in a movement direction is changeable.