Excavating – Peat excavators
Patent
1975-03-31
1976-07-27
Eickholt, E. H.
Excavating
Peat excavators
198203, B60P 136
Patent
active
039711471
ABSTRACT:
An elevator for loading a scraper bowl having a frame which extends upwardly and rearwardly from a scraper blade and which has, at the top of the frame, a chain drive including a speed reduction gear box and an electric motor having an armature coupled to the input of the gear box, the armature serving as a flywheel. Interposed between the motor shaft and the gear box, is a friction slip clutch. The torque of the slip clutch is set so that it remains non-slipping for all normal load to which the elevator may be subjected, including peak loads, while capable of intentional slippage when the elevator engages a boulder or other stubborn or positive obstruction, thereby to prevent the energy stored in the rotating armature, upon sudden deceleration of the drive, from developing a dangerous level of torque in the gear box. A hollow-shaft motor is used, and a friction slip clutch, having concentric input and output shafts, is cantilevered at the remote end of the motor, with the output shaft of the clutch being telescoped through the motor shaft and into the input connection of the gear box. It is one of the features of the construction that the motor, instead of occupying the usual position projecting outboard of the elevator frame at the upper end of the elevator, is coupled to the drive shaft by a gear box of flat configuration nesting closely against the elevator frame, with both the inlet connection and the outlet connection of the gear box facing inwardly of the frame, so that the motor occupies a "reentrant" position extending into the unused space between the runs of the conveyor chain. In the preferred form of the invention the motor extends into a tubular cross member forming a part of the frame and which serves to protect the motor. In lieu of an electric motor an hydraulic motor, having a flywheel directly connected to its rotor, may be used in the system.
REFERENCES:
patent: 2478227 (1949-08-01), Bawnister
patent: 2523887 (1950-09-01), Thomson et al.
patent: 2965217 (1960-12-01), Dommann et al.
patent: 3076540 (1963-02-01), Christian
patent: 3424029 (1969-01-01), Horsch et al.
patent: 3483639 (1969-12-01), Eftefield et al.
patent: 3526978 (1970-09-01), Jordan
patent: 3559312 (1971-02-01), Fox et al.
patent: 3635320 (1972-01-01), Capanna
patent: 3668794 (1972-06-01), Marquardt et al.
patent: 3738031 (1973-06-01), Lott
Eickholt E. H.
Westinghouse Air Brake Company
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