Lightweight link gear for tippers
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• Tel-link 50 is the name of a new underbody tipping gear, announced by Telehoist Ltd, of Cheltenham, which is basically similar to the company's Tele-lever gear which it supersedes, but affords a weight saving of around 2-i-cwt and is available at a slightly lower cost. Designed to lift a minimum of 10 tons, it is capable of lifting 15 tons. The 5fin. single-acting ram operates at a pressure of 2400 psi and in standard form the gear can tip the body to an angle of 50 deg.
Weight has been saved by the extensive use of high-tensile steel and by using tension members between the pivot point of the ram and the link pivot point, which relieves the load on the sub-frame. Oil is supplied to the piston rod side of the cylinder which ensures that the piston is immersed in oil at all times, Also of advantage with regard to weight saving, the trunnion member is employed as an oil tank. The control valve is air actuated.
Tests of the Tel-link 50 .have included 45,000 tips in a special rig on both level uneven ground. Upwards of 10,000 were made on a vehicle with a 7in. h under one wheel that gave a 7in. twist ti chassis, and 30,000 tips were made u full load. It is reported by the company the gear has proved its worth in the h of South African operators.