Conveying system with tensioning and docking assembly and method

Details Conveying system with tensioning and docking assembly and method Conveying system with tensioning and docking assembly and method

1993-05-28

1994-11-08

Graham, Matthew C.

Railways

Traction

Cable

1041731, 188312, 198750, B61B 700

Patent

active

053617061

ABSTRACT:
A conveying or transportation system having a haul rope (22) mounted for movement along a path, a terminal (31) positioned along the path and having a docking surface (52), and a carrier unit (27) coupled to the haul rope (22). The carrier unit (27) is coupled to the haul rope (22) by a rope coupling assembly (51), preferably in the form of a hydraulic piston-cylinder assembly (53) and fluid circuit (54), formed to create and maintain tension in the haul rope (22) during transport of the carrier unit (27) and formed for yieldable displacement of the haul rope (22) relative to the carrier unit (27) upon engagement of the carrier unit (27) with the docking surface (52) at the terminal (31). The fluid piston-cylinder assembly (53) preferably includes two pistons (57, 58) which are movably mounted in a common cylinder (56) and connected to a fluid circuit (54) which allows fluid to flow from opposed sides ( 68, 71) of the respective pistons (57, 58) for floating of the pistons (57, 58) inside the cylinder (56) upon docking and over-driving of the haul rope (22). A method of tensioning the haul rope (22) and of docking a haul rope-driven carrier unit (27) by advancing it up to and over-driving the haul rope (22) beyond engagement of the carrier unit (27) with a docking surface (52) also is provided.

REFERENCES:
patent: 1273053 (1918-07-01), Hild
patent: 3113767 (1963-12-01), Halberstadt
patent: 3437315 (1969-04-01), McDonald, Jr.
patent: 3875868 (1975-04-01), Martin, Jr.
patent: 4308945 (1982-01-01), Beckmann et al.

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