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Quieter quicker and clean -the theme at Olympia
Page 68
Page 69
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by Trevor Longcroft pictures by Dick Ross
AMPLE EVIDENCE is at hand at the Public Works Congress and Exhibition at Olympia this week to show that vehicle and body manufacturers catering for the public works and municipal market have environmental issues very much in mind. Quieter, quicker and cleaner appears to have been the criteria in new-model design and even old models have been modified to this end. Despite the fact that many firms showed their equipment at Bournemouth in the summer, many new designs are on exhibition this • week. The show closes tomorrow (Saturday) at 6 pm.
One. The Compressioad (Eagle Engineering Co Ltd, Leeds 10; stand Lib) design has been improved, the body now having fewer moving parts and, it is claimed, easier to maintain. The compression barrier is powered by hydraulic rams, one each side of the body, and the hydraulic equipment, previously housed on the roof, has been relocated in a weatherproof position at the front of the body behind the ejector ram. It can be reached for maintenance purposes by a ladder from the roof. Other new features include improved ejector barrier runners — the barrier runs on removable nylon pads — and redesigned hydraulic mechanics to ensure uniform ejector pressure across the barrier face. The Compressload is available in two body sizes of 13 cu yd and 17 cu yd air space. A compression ratio of 3 to 1 enables up to 6 tons of refuse to be carried. Two. Glover Webb and Liversidge Ltd (Marlborough Works, Old Kent Road, London SE1; stand 1(4) is showing a Musketeer TC refuse collection body. This body is similar to the standard Musketeer except that it has twin counter-rotating screws to facilitate faster loading. Apart from the opposite hand-screw all parts are common to the single screw modeL A maximum payload capacity of 6 tons is achieved on a 16-ton-gross chassis; the company also considers this body suitable for a three-axle machine for use in densely populated areas, when a payload capacity of 10 tons is envisaged.
Three. Rationalization by Shelvoke and .Drewry Ltd, (Letchworth, Herta, G15; Stand J5) has led to the introduction of the NX and NY series of Revopack refuse collection vehicles. A slimmer two-door cab replaces the previous four-door unit and allows a longer body to be fitted without an increase in chassis length. The passenger side seat in the cab has been replaced by three steps giving the crew access to a full-width bench seat along the back of the cab. Further. changes include a redesign of the rear hopper in relation to the rear axle — this allows a greater payload capacity without a corresponding increase in gross vehicle weight.
Four. A trailed container which can be fitted with either a drawbar or automatic-coupling equipment is shown by Murco Environmental Ltd, (Griffitt's Yard, Bellingdon Road, Chesham, Bucks; stand M20). Refuse is tipped into a rear-mounted hopper; a screw mechanism compresses it into the body space. An unusual feature of this unit is that the load is discharged over the compression mechanism. The container is hydraulically tilted, the rear door and hopper swing away and a cover plate closes over the screw to facilitate discharge. Depending on the model, the screw may be mechanically, hydraulically, or electrically driven from a mains supply. The Five. The Rapid 15 is one of two Swim sweeper collectors to be marketed in the UK by Shelvoke and Drewry. This machine, whici may soon be manufactured in the UK, uses I hydraulic drive for the refuse take-up an( gutter-brush operating system. The 1.5 cu capacity dirt hopper is hydraulically contrails( from the driver's seat; the tipping heighl permits emptying into large containers. Six. A demountable skip-handling system named FIDA is demonstrated by MercedesBenz (Great Britain) Ltd, (Great West Road, Brantford, Middx, stand F20). The handling unit may be attached to a front-wheel drive traction head such as the Unimog, or be supplied as a separate trailer. The vehicle is reversed so that a chassis-lifting member locates each side of a skip. A hydraulically actuated parallelogram frame mechanism then controls the lifting, lowering, securing and tipping. Provided it has the appropriate lugs correctly positioned, any skip can be picked up by this vehicle.
Seven. Soviet-built trucks are being shown for the first time by the UM° Plant Ltd, (Letchworth, Herts), on the heavy equipment site. One unit is a two-axle 16-ton-gross tipper designated the MA3 503A. This forwardcontrol truck has a 9-ton, 6.5 Cu yd payload capacity at 16 tons gross. It is powered by 200 bhp V6 diesel engine and the transmission comprises a twin dry-plate clutch, five-speed gearbox, and a single reduction with epicyclic hub reduction rear axle.
Eight. The Foden FC 20 dump truck (Fodens Ltd, Sandbach, Cheshire; stand Cl) is a 20-ton-payload capacity vehicle designed with the unskilled driver in mind. The body capacity Is 14 cu yd struck, 16.75 cu yd heaped. To achieve some degree of standardization the vehicle is fitted with the same power unit as the 24-ton capacity machine. The transmission incorporates a Blockhouse torque converter which besides having a torque multiplication of 2.4 to 1 at converter stall speeds protects the transmission from any high-torque fluctuations. For this vehicle Fodens have designed and now produce new front and rear axles of 10 and 20 tons capacity respectively. The cab is mounted on hydraulic dampers and the windscreen has a forward slope to reduce glare and dust collection. The exhaust-heated body is manufactured from high-tensile steel and is further protected with angle iron on the body floor, sides and bulkhead.
Nine. The largest dump truck at Olympia is the Centaur 50 from Aveling Barford Ltd (Grantham, Linos; stand C11). This vehicle has a 50-ton payload capacity and is powered by GM Vi 6 diesel engine which develops 635 bhp at 2100 rpm. Drive is transmitted through an Allison Torqmatic unit which incorporates a torque converter, lock-up clutch, and Torqmatic retarder. A powershift electricchange gearbox provides six forward and one reverse gear. The rear axle is a fully floating double-reduction type, and is connected to the chassis via the rear alitroleo suspension units, and a heavy steel A-frame giving full articulation. The body is wedge-shaped and has a fully welded construction with folded side and under-floor stiffening. Payload capacity is 30 cu yd struck, 40 cu yd heaped.