Swather tractor with frame suspension
AssigneeMacDon Industries Ltd.
InventorsLeonard Bergman, James Thomas Dunn
Life of this patent
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Abstract
A swather tractor has a frame defined by a main tractor frame carrying the cab, engine and drive system, rear axle with castor wheels and a transverse front frame assembly mounted at a front of the main frame. The front rigid frame assembly carries the header and comprises a cross member and a pair of upstanding legs each carrying a front ground wheel hydraulically driven so that steering is controlled by the rate of forward movement of the front wheels. In order to provide improved suspension, the main frame is connected to the front frame assembly by a coupling which allows up and down suspension movement of the main frame relative to the front frame assembly.
Claims13
A swather tractor comprising:
- a tractor frame;
- a cab, an engine and a drive system mounted on the frame;
- a transverse front frame assembly mounted at a front of the frame;
- a transverse rear axle assembly;
- the rear axle assembly having a pair of rear castor wheels each mounted at a respective end of the rear axle assembly;
- the front frame assembly comprising a cross member having at each end a respective one of a pair of upstanding legs;
- each leg carrying at a lower end thereof respective one of a pair of front ground wheels for supporting the tractor;
- each of the front ground wheels being driven by the drive system for powering forward motion of the tractor over the ground;
- the front frame assembly carrying a header support system including a pair of lift arms arranged for supporting a header in front of the front wheels;
- the tractor frame being connected to the front frame assembly by a coupling which allows suspension movement of the tractor frame relative to the front frame assembly.
Dependencies are inferred from the claim text.