Chain wheel arrangement for mining machines
AssigneeCaterpillar Global Mining Europe GmbH
InventorWolfgang Kruger
Life of this patent
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Abstract
A chain wheel arrangement for chain drives of mining machines, with a chain wheel shaft, with a chain wheel, with bearing shells receiving bearings for the chain wheel shaft, with a chain wheel-side sliding ring seal and with a bearing-side sliding ring seal. In order to improve the service life of the chain wheel arrangement, at least one of the bearings, preferably that of the movable bearing system, is arranged in a bearing bush which is arranged between the bearing shell and outer bearing ring and received in the bearing shell in an axially displaceable manner. The additional bearing bush allows the necessary gap between the rotating parts and the non-co-rotating, bearing shell-side parts to remain substantially constant and to this extent to become independent of the bearing play of the respective bearings.
Claims14
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.
Dependencies are inferred from the claim text.