Dump block for strip mine rigging apparatus

Details Dump block for strip mine rigging apparatus Dump block for strip mine rigging apparatus

1992-10-16

1994-06-21

Reese, Randolph A.

Excavating

Cable-operated

Boom-type

37399, 37395, 384563, 254416, E02F 346

Patent

active

053219023

ABSTRACT:
The present dump block (100) comprises an internal plate (106) attached to an external plate (108) with a rotatably mounted sheave (110) therebetween. The external plate (108) presents a smooth convex surface. Bearings (126) are mounted between the sheave (110) and a centrally located shaft (122). The position of the bearings (126) is maintained by a bearing side plate (116) A side plate bearing cushion (124) is located between the bearing side plate (116) and the bearings (126). The bearing cushion (124) absorbs the force of any impacts experienced by the dump block (100). Likewise, the convex surface of the external plate (108) turns any impact into a glancing blow, thereby extending the life of the dump block (100).

REFERENCES:
patent: 1927241 (1933-09-01), McCullough
patent: 2814890 (1957-12-01), Mutti
patent: 2904906 (1959-09-01), Smith
patent: 3684245 (1972-08-01), Marichev et al.
patent: 4640496 (1987-02-01), Van Hoomissen et al.
patent: 5061089 (1991-10-01), Bair et al.
Brochure by Esco entitled "Exploded View of Swivel Dump Block", p. 6.9.

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