CONTINUOUS UNLOADER

WIPO Patent Application WO/1997/036809

A1

In a continuous unloader, in which an endless bucket conveyor is passed around an upper sprocket, a base sprocket therebelow and a distal sprocket in front of the upper sprocket, the base sprocket and the distal sprocket are connected to a lower end of a frame which supports the upper sprocket via a link mechanism which lowers the base socket and the distal socket when approaching each other and raises them when separating from each other. The common link mechanism causes the base sprocket and the distal sprocket to move toward and away from each other and ascend and descend, so that the continuous unloader is made simple in construction and small in weight. Also, complicated control is not necessary and a manufacturing cost is made low. The link mechanism may comprise a main link connected at one end thereof to the lower end of the frame and at the other end thereof to the distal sprocket, an auxiliary link connected at one end thereof to an intermediate point of the main link and at the other end thereof to the base sprocket, and a stay link connected at one end thereof to an intermediate point of the auxiliary link and at the other end thereof to the lower end of the frame. Such link mechanism enables the base sprocket and the distal sprocket to move toward and away from each other and to ascend and descend.

JPS61166423	CARGO GEAR FOR BELT CONVEYOR
JP3539686	HYDRATE SHIP AND CARGO HANDLING DEVICE

MIYAZAWA ISAO (JP)

PCT/JP1997/001083

October 09, 1997

March 28, 1997

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ISHIKAWAJIMA HARIMA HEAVY IND (JP)
MIYAZAWA ISAO (JP)

B65G67/60; (IPC1-7): B65G67/60

JPH0826489A	1996-01-30
JPS5869635A	1983-04-25
JPH0352923U	1991-05-22
JPS63267607A	1988-11-04

See also references of EP 0837018A4

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