| 摘要 |
A tipping heated hopper comprises a hopper 4, having a filling opening 16 at a first end and a discharge outlet 28 at a second opposite end 12, a support structure for supporting the hopper 20, e.g. by a pivotal mounting to the second end of the hopper 24, and means, e.g. a number of hydraulic pistons 26 and hydraulic locking pins (38, Figure 3), acting between the hopper first end and the support structure for raising the hopper into a discharge position. Preferably the hopper is mounted in a thermally isolated manner, e.g. by using heat insulating spacers, on a subframe 19 and its temperature is controlled by the provision of double walls 18 containing a layer of insulating material and heating elements. Preferably, when the first end of the hopper is lowered, a lorry may be driven into the hopper through the filling opening to fill the hopper and also the hopper is mounted on a number of load cells for weighing the hopper. The hopper outlet may also be provided with a geared motor driven sliding gate (36, Figure 3) opening onto a screw conveyor (30, Figure 3) which delivers the bituminous aggregate to a belt conveyor (31, Figure 2) having a weighing device which controls the opening of the gate so as to dispense a desired weight of aggregate. The hopper may also be fitted with an internal hinged flap door (40, Figure 4), operated by an electric winch, which may be opened in a controlled manner to slow the fall of the aggregate to prevent the loss of bitumin from the aggregate upon elevation of the hopper. |
