GB1318026A - Boom mounted conveying means - Google Patents

Abstract

1318026 Endless conveyer belt instalations ROTEC INDUSTRIES Inc 14 May 1971 14894/71 Heading B8A An endless conveyer UC, and a conveyer LC fed with concrete mix from the conveyer UC, are detachably mounted on a three-part telescopioally-extensible boom B1, B2, B3, carried by a wheeled vehicle WV. The conveyer UC is fed by a conveyer SC having two jointed sections 94, 96. The outer end of the section 94 carries castor wheels 102 which may be held from castoring by detachable pins (110), (Fig. 12, not shown). The conveyer SC feeds the conveyer UC via a shoot 68 (Fig. 2) which can swivel about a mounting 68a relative to the conveyer SC. The shoot 68 is mounted on wheeled trolley which can run on rails on the frame of the conveyer UC under the action of a motor M5. A pair of jacks HC can be pressurized by the operation of a pump (P), Fig. 13, not shown), driven by a motor (6), so as to maintain the axis of the shoot 68 as desired, when the other conveyers are adjusted. The conveyers UC and LC are detachably secured to the boom B1, B2, B3, by an arrangement of removable pins 35a (Fig. 6) at mountings 51, 52, 53 (Fig. 1). The mounting between conveyers UC and LC comprises 3 pairs of wheel brackets 42, 44, 46 (Fig. 5, brackets 44 and 46 also being visible in end view in Fig. 6). The boom B1, B2, B3, can be retracted so as to retract the conveyers UC, LC (Figs. 13-15, not shown). A hood 47, 49 (Figs. 5, 6), covers the zone of transfer between the conveyers UC, LC The boom may also be elevated so as to incline the conveyers (Fig. 16, not shown). The boom B1, B2, B3, also functions as a crane boom for a hoist 62. The shoot into which the conveyer LC discharges (Fig. 10) is resiliently suspended so that if it becomes overloaded, a chain 136 operates a releasable connection between the lower end of the shoot and the upper end of a delivery tube 116. The same mechanism operates a microswitch LS which causes a klaxon 146 to sound, and which causes disconnection of power from the conveyer drive motors M1, M2, M3.