Hydraulic flow divider for a mining vehicle

Details Hydraulic flow divider for a mining vehicle Hydraulic flow divider for a mining vehicle

1976-05-14

1978-01-17

Hafer, Robert A.

Tool driving or impacting

With vehicle support for drive

Vehicle motor and drive motor powered by same energy source

60420, E21C 1102

Patent

active

040687287

ABSTRACT:
A hydraulic flow dividing and proportioning system is provided for use in conjunction with a multi-function mining vehicle. In a preferred embodiment of the invention, the hydraulic system is employed for powering a roof bolting vehicle having the power requiring functions of drill rotation, drill thrusting and vehicle tramming. The system, utilizing a single hydraulic pump, provides for the efficient and selective pumping of hydraulic fluid to those power requiring elements when necessary. The system additionally includes a hydraulic flow proportioner which provides for a smooth and even tramming transition from a stop condition to full drive condition.

REFERENCES:
patent: 2646968 (1953-07-01), Curtis
patent: 3017935 (1962-01-01), Galbraith et al.
patent: 3252525 (1966-05-01), Pyles
patent: 3319727 (1967-05-01), Pyles
patent: 3815689 (1974-01-01), Kuhl
patent: 3841095 (1974-10-01), Baker
patent: 3842602 (1974-10-01), Ziegler et al.
patent: 3866418 (1975-02-01), Waters

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