Bogey frame sensor for railcar mover
AssigneeCalbrandt, Inc.
InventorCalvin J. Brandt
Life of this patent
Estimating the term…
Abstract
A railcar moving or positioning system incorporating relatively simple mechanical bogey frame side member sensing systems mounted on each dog carriage of a railcar indexing system is disclosed. Each sensing system is used to control the operation of a dog mounted on the same carriage. A mechanical follower device is employed to sense the underside of an encountered bogey frame side member. Deflection of the follower is used to operate a hydraulic valve which, in turn, is used as a control cylinder to raise or lower an adjacent dog member.
Claims6
A railcar indexing system having carriage-mounted mechanical bogey frame detecting and dog operating systems comprising:
- (a) a pair of dog carriages mounted for operation in spaced trackside guideways, each dog carriage including a pusher dog mounted on said carriage, each dog having an associated hydraulic dog cylinder for operating the dog;
- (b) a bogey frame detecting system mounted on each of said dog carriages for use in controlling the operation of each of said dogs and further comprising,
- (1) detecting assembly including a crank arm-mounted follower positioned to be deflected by the underside of an encountered bogey frame,
- (2) a spring-biased, normally closed hydraulic valve device connected to control each hydraulic dog cylinder for controlling raising of a connected dog, wherein the opening of said valve is determined by a deflection of said follower in a first direction,
- (3) a resilient linkage assembly between said follower and said valve for transmitting sufficient force to open said valve.
Dependencies are inferred from the claim text.