Wheel substitutes for land vehicles – With brake
Patent
1983-02-16
1985-10-08
Scherbel, David A.
Wheel substitutes for land vehicles
With brake
305 10, 305 31, 192 13R, 192 8R, B62D 5500, B62D 5530
Patent
active
045456240
ABSTRACT:
An improved track tensioning and recoil arrangement for crawler track drive systems is disclosed which uniquely functions to tension the crawler tracks responsively to the load thereon. The arrangement includes a pair of hydraulic drive motors respectively associated with each of the crawler tracks for independent operation thereof. Tensioning of the tracks is provided by a hydraulic tensioning cylinder assembly. In order to tension the tracks responsively to the torque applied thereto by the drive motors, branch hydraulic fluid lines are provided from the fluid supply lines for each hydraulic motor to the tensioning cylinder assembly of the respective track. By this arrangement, tension in the track is increased as torque applied to the track by its drive motor is increased. In the preferred form, pressure relief valve means are provided in communication with each tensioning cylinder assembly in order to relieve pressure within the tensioning cylinders if it exceeds a predetermined value. This desirably permits improved track recoil response in the event that the track is subjected to abnormal tension such as by contact with a rock or like obstacle.
REFERENCES:
patent: 3101977 (1963-08-01), Hyler et al.
patent: 3310127 (1967-03-01), Siber et al.
patent: 3536230 (1970-10-01), Williams
patent: 3910649 (1975-10-01), Roskaft
patent: 3972569 (1976-08-01), Bricknell
patent: 4201279 (1980-05-01), Fukui
J. I. Case Company
Scherbel David A.
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