Clearing chain for excavating bulk material
AssigneeFranz Plasser Bahnbaumaschinen-Industriegesellschaft m.b.H.
InventorsJosef Theurer, Herbert Wörgötter
Life of this patent
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Abstract
A clearing chain is mounted on a mobile track maintenance machine for excavating ballast material from a track bed. The chain is composed of shovel-type clearing members for gathering the ballast and intermediate chain elements positioned between the adjacent clearing members and connected thereto by means of chain joints, thus forming an endless chain. Each intermediate chain element comprises two chain joints spaced from one another in the longitudinal direction of the clearing chain. The chain joints are designed for receiving a hinge pin articulatedly mounted in the joint and releasably fastened to the clearing member.
Claims5
A clearing chain for excavating bulk material from a ballast bed supporting a track and for conveying the excavated bulk material, the chain being mounted on a frame of a mobile track working machine and comprising
- a) a plurality of shovel-type clearing members sequentially arranged in direction of elongation of the clearing chain for gathering and removing the bulk material;
- b) intermediate chain elements positioned between two adjacent clearing members for forming an endless chain, each said intermediate chain element including two chain joints spaced from one another in the direction of elongation of the clearing chain, each chain joint having a joint axis;
- and
- c) hinge pins for hingedly connecting the clearing members and intermediate chain elements to one another at each chain joint, each said hinge pin being releasably fastened to the clearing member and articulatedly mounted in the chain joint,
- wherein each said chain joint is a pivot joint bearing designed as a spherical bearing, and includes a knuckle eye and a ball race which is universally movably mounted in the knuckle eye and surrounds the hinge pin extending in the direction of the joint axis.
Dependencies are inferred from the claim text.