Patent ID: 8844711
Filing Date: 2014-09-30
Classification: B65G,F16C,Y10S

Abstract:
1. A chain wheel arrangement for chain drives of mining machines, with a chain wheel shaft, with a chain wheel having at least one chain starwheel, with bearing shells which are arranged on both sides of the chain wheel, receive bearings for the chain wheel shaft and are fastenable to the machine frame of the chain drive, with a chain wheel-side sliding ring seal and with a bearing-side sliding ring seal between the chain wheel and bearing, at least one of the bearings is arranged in a bearing bush which is arranged between the bearing shell and an outer bearing ring of the bearing and is received in the bearing shell in an axially displaceable manner, wherein at least one of the bearing shells is provided with a collar web which protrudes axially toward the chain wheel and radially covers a chain wheel-side web extension protruding from the chain wheel toward the bearing, wherein the web extension radially covers an annular extension protruding from the bearing bush toward the chain wheel, and wherein the collar web, web extension, and annular extension form a labyrinth seal to cover the chain wheel-side sliding ring seal and the bearing-side sliding ring seal.