Motor vehicles – Motor as source of power for other machine
Patent
1981-12-04
1985-09-24
Pekar, John A.
Motor vehicles
Motor as source of power for other machine
180235, 74 1586, B60K 1728, B60K 1734
Patent
active
045428018
DESCRIPTION:
BRIEF SUMMARY
DESCRIPTION
1. Technical Field
This invention relates generally to a vehicle transfer gear mechanism, and more particularly to a depending gear train and a power take-off clutch mechanism supported within a common housing or drop box.
2. Background Art
Articulated vehicles, such as four-wheel drive tractors, typically have an engine and at least a portion of a multi-speed transmission disposed on a front frame structure at a considerable elevation above the axes of the wheels. Hence, a depending gear transfer train is required to provide a drive to the wheels. Unfortunately, such a transfer train is often located on the rear frame structure. With this arrangement the drive to the front and rear wheels must pass twice across the generally centrally disposed articulation joint, which adds undesirable complexity and cost.
If the depending gear transfer train is mounted on the front frame structure ahead of the articulation joint it becomes a major problem to incorporate it and the entire multi-speed transmission in the relatively limited space provided behind the engine while making the components easily serviceable.
Moreover, these vehicles should provide an effective power take-off option, hereinafter referred to as PTO, for powerably operating implements at the rear thereof. Usually an engine driven PTO is desired so that its rotational speed is independent of the speed ratio of the multi-speed transmission. Preferably, the PTO should include a disengaging clutch assembly and the output shaft therefrom should pass above the axis of the rear axle at an elevation below that of the engine driven member. These requirements restrict the design options.
Still further, it is desirable to provide a service brake assembly in the drive line to the wheels and an auxiliary drive for powering certain hydraulic devices such as oil and implement pumps on the vehicle.
Thus, what is desired is a transfer gear mechanism having a housing or drop box which is longitudinally compact, and which is constructed for effective interconnection with a multi-speed transmission and an engine driven member. The construction of the transfer gear mechanism should be such as to allow convenient individual servicing and/or repair of the major components housed therein and including the PTO clutch assembly, the service brake assembly, and the auxiliary hydraulic drive without the need to remove the main housing.
The present invention is directed to overcoming one or more of the problems as set forth above.
DISCLOSURE OF THE INVENTION
In one aspect of the present invention a transfer gear mechanism for a vehicle has a depending gear transfer train having an input gear disposed on an upper axis and an output gear disposed on a lower axis, and housing means are provided for compactly supporting the gear transfer train, a pump and a PTO clutch assembly in preselected locations. Particularly, the housing means locates the pump along the upper axis and the PTO clutch assembly along a third axis elevationally between the upper and lower axes such that the PTO clutch assembly is disposed substantially underneath the pump.
In accordance with another aspect of the invention a depending gear transfer train for propelling a vehicle is supported within a housing such that an input gear thereof is disposed on an upper axis and an output gear thereof is disposed on a lower axis. A PTO input gear and a pump are connected to the housing, drive means are provided for powerably rotating them both, and a PTO clutch assembly driven by the PTO input gear is supported within the housing on a third axis intermediate the upper and lower axes such that it is disposed substantially underneath the pump.
In accordance with a still further aspect of the invention, a vehicle transfer gear mechanism includes a depending gear transfer train having an upper input gear and a lower output gear, a service brake assembly, and a PTO clutch assembly. These are all contained and supported within housing means such that the service brake assembly is in alignment with the lower a
REFERENCES:
patent: 2513333 (1946-04-01), Keese et al.
patent: 2784710 (1953-07-01), Kremser
patent: 2867126 (1956-08-01), Bolster
patent: 2932202 (1957-12-01), Rinkema
patent: 3046813 (1962-07-01), Bixby
patent: 3334703 (1967-08-01), Zeller
patent: 3572457 (1971-03-01), Hill
patent: 3774460 (1972-06-01), Browning et al.
patent: 3894603 (1975-07-01), Winzeler
patent: 3982599 (1975-02-01), Herscovici et al.
Richards David L.
Windish Willis E.
Caterpillar Tractor Co.
Lanchantin, Jr. Charles E.
Pekar John A.
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