Hydraulic Drive for Oil Dispensers
Page 39
If you've noticed an error in this article please click here to report it so we can fix it.
)MPLICATIONS in mechanically driving the ancillary equipment of multi-compartment oil and fuel tankers extensive. A method of hydraulically driving the cargo Lps and hose-reel rewinding mechanisms has, therefore,
developed by the Steel Barrel Co., Ltd„ Uxbridge, dx. A recent application of the principle is to a icating-oil dispenser with four compartments for C. C. tefield and Co., Ltd.
aree of the compartments time a capacity of 150 gallons and the fourth holds 500 gallons. Only three of the partments are equipped with discharge apparatus, the
t h (of 150 gallons) being a reserve for supplementing :r the 500-gallon tank or one of the other smaller cornmen Is,
peri Sine S-6-11Z pump is mounted on the frame of the in 5-ton chassis and is driven from the gearbox Brower -off by a Hardy Spicer propeller shaft. Oil for the aulic circUit is carried in a separate 20-gallon tank. .essures of 750-1,000 p.s.i. are created by the pump which 'ers the oil to a selector valve controlled from the ping compartment. Operation of the selector valve
:s the hydraulic oil to any of the three cargo-pump )rs.
tese arc Doi Sine type S-51/2 hydraulic motors which, the main pump, are made by Andrew Frazer and Co., 29 Buckingham Gate, London, SW.]. They develop h.p. at 800 r.p.m., and their speed and power output De varied by altering the speed of the engine. A throttle rol on the operating panel enables this to be done from .ear of the vehicle. Fully floating couplings connect the motors to tho Stothert and Pitt cargo pumps. Delivery is through Smith's T.10 aireliminating flow meters, which incorporate 40-mesh-gauze strainers, and thence to the delivery hose and nozzle. Delivery rates are 25. 20 and 15 gallons per minute, with S.A.E. 20, 30 and 40 grades of oil reipectively, at a temperature of 60' F.
The three aluminium hose reels are rewound by spring and have stop-catch mechanisms. They are mounted at the rear of the vehicle, inside the pumping compartment belov, the meters. On some installations, particularly large ones. a hydraulic motor is used to rotate the hose drum for rewinding purposes. This motor is also supplied with oil from the main pump and it rotates the drum by means of a belt or chain drive.