Title:
TURNING MECHANISM FOR TENSION CHAIN OF COAL MINER IN UNDERGROUND OPERATION
Document Type and Number:
Japanese Patent JPS55122993
Kind Code:
A
Abstract:
A coupling device for connecting a mineral mining machine, such as a plough, to a drive chain. The coupling device is intended to locate within a channel inside a slotted guide containing the drive chain. The device is composed of coaxial tubular members secured together axially. The inner tubular member supports a swivel-mounted shackle connecting with the chain and a rigidly-mounted shackle connecting with the machine. One or both tubular members are shaped or relieved at the end nearest the swivel shackle to provide a cleaning nose which forces dust or the like from the channel as the chain draws the machine along the guide. A lateral projection on the outer tubular member engages in the slot and co-operates with the nose to guide the material away through the slot.
Inventors:
GERUHARUTO MERUTEN
OSUUARUTO BUROIERU
BERUNTO SHIYUTAINKUURU
OSUUARUTO BUROIERU
BERUNTO SHIYUTAINKUURU
Application Number:
JP2817780A
Publication Date:
September 22, 1980
Filing Date:
March 07, 1980
Export Citation:
Assignee:
GEWERK EISENHUETTE WESTFALIA
International Classes:
E21C27/32; E21C27/34; E21C29/14; E21C29/18; (IPC1-7): E21C29/14