| 摘要 |
1,150,696. Mining conveyers. LEE-NORSE CO. 10 April, 1968] [11 May, 1967], No. 17306/68. Heading B8A. Apparatus for conveying mined material comprises a conveyer unit 10 of the extendible type which is detachably connectible to a selfpropelled loading unit 12. A receiving section 14 of the unit 10 is provided with anchor means 100 for engagement with the mine roof 140 and a discharge section 16 includes a belt storage means for automatically adjusting the effective length of a conveying belt 22 during extension and retraction of the unit 10. Conveyer unit 10.-The belt 22 is driven by rollers 28, 30 and is stored in the discharge section 16 by a stationary roller bank 42 in cooperation with a movable roller bank 44, the latter being carried by a carriage 50. The receiving section 14 is linked to the discharge section 16 by pins 109 which engage in locking slots 114 and is connected to the loading unit 12 by means 96 comprising an hour glass-shaped member 118 and a pair of arms having opposing arcuate engaging portions (122), Fig. 5 (not shown). A pair of cables 43 are wound on driven drums 58 and, at one end, are attached to the discharge section 16. The effective lengths of the cables are adjusted during relative movement between the sections 14, 16 and maintain the position of stands (142), Figs. 9, 10 (not shown), which carry idler rollers for guiding the belt 22. A hopper 56 directs material on to the belt 22 and the unit 10 is movable by driven treads (20), Fig. 1 (not shown). Loading unit 12.-An endless chain 84 is driven by hydraulic motors 86 and, at its discharge end, is adjustable in height over the hopper 56 by a pivoted assembly 85, Fig. 4. For temporarily storing mined material when the chain 84 is not driven, an elongated hopper 90 is provided. The unit 12 is movable by treads 76. Operation.-Other than the relative positions shown in Fig. 1, the receiving section 14 may be separated from the discharge section 16, Figs. 8, 9 (not shown) and the loading unit 12 may be uncoupled from the receiving section 14, Figs. 10, 11 (not shown). The anchor means 100 is used as in Fig. 10. |
