由英国铁路研究、Plasser公司生产的大型风动填碴车样机,已于1984年11月交给英国铁路(BR)调试使用。样机重80t,由Rolls Royce引擎驱动,有三个铰接式转向架。样机配备有贮碴斗和抓斗设备,它能够装载运送约10t道碴,这些道碴足以满足一次工作转换的需要。该样机用压缩空气将预先计算好的一定量的新道碴喷填入轨枕下面,以恢复轨道的几何状态。工序的第一步是用倾斜仪测定无载时轨道的几何状态,并换算成加载时的纵断面,这一纵断面即为计算机计算符合轨道几何条件所需新道碴数量的依据。然后,抬起轨道,使每 A prototype of a large pneumatic ballast truck manufactured by British Rail Research and Plasser was commissioned for use by the British Railways (BR) in November 1984. The prototype weighs 80 tons and is powered by the Rolls Royce engine with three articulated bogies. The prototype is equipped with a hopper bucket and a grabbing device, which can carry about 10 tons of ballast for loading and unloading, which ballast is enough to meet the needs of a work shift. The prototype uses compressed air to fill a pre-calculated amount of new ballast under the sleeper to restore the orbital geometry. The first step of the process is to determine the geometry of the orbit without a load using a tiltmeter and convert it into a longitudinal section at load. This longitudinal section is the basis for calculating the number of new ballast required by the computer to meet the orbital geometry. Then lift the track so that each one