Source: http://www.google.com/patents/US6530466?dq=FRAIOLI
Timestamp: 2014-12-18 13:44:12
Document Index: 603962623

Matched Legal Cases: ['art 23', 'art 6', 'art 24', 'art 23', 'art 24', 'art 7', 'art 7', 'art 7', 'art 7', 'art 6', 'art 3', 'art 7', 'art 7', 'art 7', 'art 6', 'art 7', 'art 6', 'art 6', 'art 7', 'art 7', 'art 7', 'art 6', 'art 6', 'art 7', 'art 6', 'art 7', 'art 6', 'art 107', 'art 7', 'art 6']

Patent US6530466 - Overhead conveyance device and overhead conveyance vehicle - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsAn overhead conveyance device and an overhead conveyance vehicle that can convey a conveying object, while keeping it at a minimum distance from surrounding equipment when the overhead conveying vehicle turns around during conveyance of the conveying object. The overhead conveyance device (1) is so structured...http://www.google.com/patents/US6530466?utm_source=gb-gplus-sharePatent US6530466 - Overhead conveyance device and overhead conveyance vehicleAdvanced Patent SearchPublication numberUS6530466 B2Publication typeGrantApplication numberUS 10/193,214Publication dateMar 11, 2003Filing dateJul 12, 2002Priority dateJun 17, 1997Fee statusPaidAlso published asUS6427824, US20020179409, WO1998057881A1Publication number10193214, 193214, US 6530466 B2, US 6530466B2, US-B2-6530466, US6530466 B2, US6530466B2InventorsMasanao Murata, Teruya Morita, Hitoshi KawanoOriginal AssigneeShinko Electric Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (15), Referenced by (4), Classifications (23), Legal Events (2) External Links: USPTO, USPTO Assignment, EspacenetOverhead conveyance device and overhead conveyance vehicleUS 6530466 B2Abstract An overhead conveyance device and an overhead conveyance vehicle that can convey a conveying object, while keeping it at a minimum distance from surrounding equipment when the overhead conveying vehicle turns around during conveyance of the conveying object. The overhead conveyance device (1) is so structured that even when a carriage part (6) of the overhead conveyance vehicle (5) enters a branching part (3) for allowing the carriage part to change in traveling direction and turns around, the conveying object (25) grasped by a hand (9) can be kept unchanged in direction.
What is claimed is: 1. An overhead conveyance device comprising a carriage part that travels along an overhead track, a hand suspending part mounted on said carriage part in rotatable relation relative thereto, a hand part suspended from said hand suspending part in such a manner as to be movable up and down, and rotation control means for controlling turning said hand suspending part relative to said carriage part.
The table control unit 21 drives the table-use motor 15 under the command from an operating system of the building (on the grounded side, not shown) to turn the turning table 12 by only a predetermined angle (90 degrees) under control. Also, the table control unit 21 clocks the pulse number from a pulse encoder (not shown) of the table-use motor 15. The clocked pulse number is output to for example a transmitting part 23 of the support 11 in the form of rotation signals α showing the turning state of the turning table 12.
The hand control unit 22 is built in the carriage part 6. The hand control unit 22 has a receiving part 24 for receiving electric waves (rotation signals a) transmitted from the transmitting part 23 and drives the hand-use motor 20 under the signals α received by the receiving part 24 to regulate the turning of the hand suspending part 7. In other words, the hand control unit 22 controllably turns the hand suspending part 7 and the hand 9 in the opposite directions by only 90 degrees under the rotation signals α, while bringing their rotations into synchronization with the rotation of the turning table 12.
In FIGS. 1-3, the overhead conveyance vehicle 5 lowers the hand 9 from the hand suspending part 7 to grasp the conveying object 25 with the pawls 10 of the hand 9. Subsequently, the overhead conveyance vehicle 5 raises the hand 9 with the use of t he hand suspending part 7 and keeps the conveying object 25 in its suspended state. The overhead conveyance vehicle 5 drives the carriage part 6 to the branching part 3 to convey the conveying object 25 and brings it to a stop within the table track 13.
In FIG. 5, a first fixing means 30 for regulating the turning of the hand suspending part 7 from outside is provided on the support 11. The first fixing means 30 is composed of a linear actuator having a stopper 31 movable back and forth with respect to the hand suspending part 7. A second fixing means 32 for regulating the turning of the hand suspending part 7 from inside is provided in the interior of carriage part 6, as shown in FIG. 6. The second fixing means 32 is composed of a disk 33 fixed to an end of a shaft projecting from the hand suspending part 7 into the carriage part 6; and a brake 34 capable of selectively pressing against the disk 33. The second fixing means 32 is not limited to the one of FIG. 6, but may have another construction shown in FIG. 7. The second fixing means 32 of FIG. 7 is composed of an electromagnet 35 fixed in the carriage part 6; and a clutch disk 37 fixed to an end of a shaft onto which the electromagnet 35 is loosely fitted. The electromagnet 35 is magnetized to absorb the clutch disk 36, so as to regulate rotation of the hand suspending part 7 or is demagnetized to detach the clutch disk 36 from it, so as to permit the rotation of the hand suspending part 7. The first fixing means 30 forms a rotation regulating means of the overhead conveyance vehicle 5 for controlling the turning of the hand suspending part 7 relative to the carriage part 6.
The overhead conveyance vehicle 5 is composed of: the carriage part 6; the hand 9 capable to grasp the carrier 104, keeping it in the suspended state; and the hand suspending part 7 for suspending the hand 9 in such a manner as to up and down the hand 9. The driving means illustrated in FIGS. 1-4 is provided between the carriage part 6 and the hand suspending part 7. When the carriage part 6 enters the branching part 107 and turns, the driving means allows the hand suspending part 7 to turn in the opposite direction relative to the carriage part 6.
Industrial Applicability As mentioned above, the overhead conveyance device and the overhead conveyance vehicle are of suitable for the use with the turning table type or rotary type branching part, located in the track, for changing the traveling direction of the overhead conveyance vehicle.
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