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The weight watcher
Page 104
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• West Yorkshire Trading Standards Service has invested £110,000 in a weighbridge tester to meet tighter controls being introduced next year.
Over a 12-month period the service expects to test more than 400 high capacity weighing machines used by the local manufacturing industry as well as quarries, scrap yards, waste management sites and builders' yards. The test unit comprises a MercedesBenz 1733 day cab tractive unit and a specially-prepared flat Craven Tasker tri-axle semi-trailer. The trailer is designed to carry 20 one-tonne weights or 40 500kg weights, which can be transferred to the weighbridge using the rearmounted Atlas hydraulic crane. A reach of 7.3m (24ft) and two-tonne lifting capacity adds versatility to the one-man operation.
A Slidaflex sliding hood, supplied by Norteck Bodies of Telford, encloses both the weights and the auxiliary engine while in transit but leaves the crane and the stabiliser legs exposed.
The system consists of a series of tubular steel hoops which run on wheels mounted on rails which form part of the side rave. The hoops are attached only by the PVCcoated polyester tilt that covers them at predetermined spacings. A quick release tension device in the rear pillars allows the structure to be moved along the platform from either end by just one person.
The trailer specification includes Wewellar full air suspension with front and rear full lift axles. As the vehicle also acts as part of the test load, it was important that the overall wheelbase did not extend further than 6.1m (20ft) so that it could be used to test over 98% of the plate bridges in West Yorkshire.