Overhead travelling carriage
AssigneeMurata Kikai Kabushiki Kaisha
InventorsTakashi Nakao, Yoichi Nakamura
Life of this patent
Estimating the term…
Abstract
A platform 12 is supported by four belts 22 to 25. Of the belts 22 to 25, a pair of belts 24, 25 is attached to a pivoting arm 26 so that the pivoting arm 26 is pivotable around a pivoting shaft 28. Pivoting of the pivoting arm 26 absorbs, for example, the difference in length between the belts 24, 25. The present invention makes it possible to simplify an elevate and lower driving mechanism of the platform 12 and to easily adjust the lengths of the belts 22 to 25. The present invention also makes it possible to prevent vibration during elevation or lowering and to allow the belts 22 to 25 to stand long use.
Claims8
An overhead travelling carriage comprising:
- four hanging members which hang, elevate, and lower a platform,
- wherein two of the four hanging members are attached to respective sides of a pivoting shaft of a common pivoting arm, the pivoting arm being attached to the platform so as to be pivotable in a vertical plane around the pivoting shaft,
- wherein the two other hanging members are attached to the platform by connection members having floating slots, and without using said common pivoting arm or a second common pivoting arm, said two other hanging members being fixed in a lateral direction, and
- wherein an elevate and lower driving section of the overhead travelling carriage comprises drums having a common shaft, and the four hanging members are wound around and fed from the drums.
An overhead travelling carriage comprising:
- four hanging members which hang, elevate, and lower a platform,
- wherein two of the four hanging members are attached to respective sides of a pivoting shaft of a pivoting arm, the pivoting arm being attached to the platform so as to be pivotable in a vertical plane around the pivoting shaft,
- wherein the two other hanging members are attached to first and second fixtures, which are respectively attached to first and second connection members fixed to said platform,
- wherein an elevate and lower driving section of the overhead travelling carriage comprises drums having a common shaft, and the four hanging members are wound around and fed from the drums, and
- wherein said first and second fixtures are respectively connected to said first and second connection members by floating slots.
Dependencies are inferred from the claim text.