| 摘要 |
The conventional transportation of excavator suffers from either poor mobility within large project site with low excavator speeds of 4 kms/hour or from having to engage a standby truck/trailer that idles most of the time when excavator is on active duty. Alternately, arranging a truck/trailer, when excavator is taken off from active duty, is not a too attractive proposition, considering the fact that truck/trailer for transporting required excavator is not necessarily available ditto on time. The "Excavator Powered Engineless Truck" surmounts these difficulties and inherent drawback of low speeds by eliminating the truck/trailer engine, replacing it with a suitably rated hydraulic motor, and installing on the excavator a "change-over switch" to control the added operation of excavator driving "engineless" truck/trailer on highways or on paved internal project site roads. On operator pushing knob to "Truck-run" position, the excavator oil pump instead pumps oil to hydraulic motor of truck/trailer that is connected to its clutch and gearbox. The truck/trailer starts moving at speed that is largely determined by rating of truck/trailer hydraulic motor. The economic benefits of the excavator-powered engineless truck/trailer are impressive.
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