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ENGINE EXHAUST POWERS RUSSIAN SIDE-TIPPER
Page 60
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ENGINE exhaust gases are used to power a side-tipper described in the January issue of the Russian journal Automobile Transport. Built by the U.S.S.R. Central AutoConstruction Workshops, it is based on a standard Z1L-164 lorry chassis and has three bellows between the frame and body which are inflated by the vehicle's exhaust to raise the platform. This is possible without stalling the engine through back-pressure because the large total cross-section of the three bellows means that only relatively low pressure is required.
All three bellows are fed from a single tapping in the exhaust pipe via a branched manifold and, to bring the tip into action, the driver operates a cab-mounted lever connected by cable to a valve in the exhaust tailpipe, closing the normal gas exit. To lower this valve is opened and gravity does the rest.
Raising to full tip is said to take a minimum of 50 sec., but load and engine speed naturally affect this. Lowering time is 20-25 sec. When the angle of tip reaches 60° a cable attached to the platform opens a release valve in the manifold so that this angle cannot be exceeded. Radius rods centred on the platform hinge line and attached at their other ends to four points on each bellows ensure that these do not deform outwards when in operation. Claims for the system include cheapness and simplicity of construction compared with hydraulic gear.
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