TIPPING GEARS AND LOAD-HANDLING DEVICES.
Page 23
Page 24
If you've noticed an error in this article please click here to report it so we can fix it.
WITH THE exception of tipping gears, of which there is a considerable variety, read-handling devices are few in number; in fact, the only true exhibit of this type—and this one deals -with what amounts to a detachable body on small wheels—is shown by Rlousset.
In this device channel-steel ramps are provided at the end of a skeleton platf arm, and up this the removable load carrier is hauled by a winch driven by a cardan shaft from the top of the gearbox on the lierliet chassis, to which the gear is fitted.
For hauling purposes, the rope passes vertically upwards to a pulley at the top of a pillar which is provided with a buffer spring. It then runs down under a pulley at the base of this pillar, and thence to a V-arm carried on a rocking shaft at the front of the body frame, and when hauling the body into place this arm lies-in a horizontal position Just below the body.
The gear is actually a combination of a loading and tipping device, for the y arm may be dropped and locked into a vertical position, and the rope slipped from under the lower pulley; it then lifts the front of the body, instead of pulling it towards the pillar.
On another Berliet chassis Mousset
shows an elaborate hoist -with a vertically.piyoted arm attached to the chassis and a winch gear driven by chain from the gearbox layshaft, and through bevels to the vertical Shaft carrying a wormgear and thence to the winch drum. The wire rape from the drum passes over pulleys on the pivoted arm and then down to a V bracket on the body. This bracket is hinged and at its lower end carries a wheel. Normally the bracket lies along the lower part of the body, but as strain is put on the rope the wheel runs along a curved channel and provides a wedging action to give the initial lift. Dealing with concentrated loads may iee said to be the work of the 10-ten Dewald tipper for carrying blocks of stone. The chassis has a stout platform towards the rear, and this is lifted by utelescopie hydraulic ram. Steel rollers assist the movement of the stone, and to prevent over-straining the springs, pivoted supports are dropped to take the load from them.
A most practicable type of petrol-electric crane is displayed by Decauville Crochat. The chassis is the Crochat petrol-electric type, with a generator providing the current for the driving motor, or for operating the crane through the medium of small motors. The shape of the jib permits articles to be lifted from in front of the vehicle, and the machine is proving of considerable value, particularly in dock work. It is shown carried by a turntable, but this is merely to advertise the turntable, which is intended for garage and other uses.
A side-tipper of the roll-over type, with automatically opening sides, is shown by Paquette et Cie, This body is controlled by special levers, by which the pull takes place at the correct spot, and there is also an automatic locking device.
Aries show a hydraulic gear with single ram offset frona the centre line of the vehicle.
A twin-ram gear somewhat resembling that used by Bromilow and Edwards is to be seen on the U.S.A. Liberty chassis. The rams take action on a crossbar supported on the body by links. Several examples of the Wood Horizontal Hydraulic hoist are shown on different vehicles by F. Geneve.
One F.W.D. is equipped with a some
what elaborate geardesigned by A. Marsh. It has chain drive from the gearbox to a longitudinal shaft and thence warm drive to a. winch, wire ropes being passed over pulleys on an upright behind the driver's seat and thence down to the body. . • A steam-operated ram is utilized in -the Purrey Exshaw steam wagon, which, incidentally, is the only steam wagon built in France. •
The Ste. des Transports Automobile Industriel et Cammerciaux exhibit a Reriaalt fitted with a hand-operated tipping gear with a three-stage reduction gearbox, from which the drive is taken to pinions working in curved racks attached to the body.
One of the Aries lorries has a central screw gear in which the nut is driven through the medium of a belt from the front of the gearbox and bevels.