一般老式龙门刨床的刀架横梁大多是手动升降的,在调整横梁高度时,既费力又费工。后来我们在制造的B 209型龙门刨床上,添装了一套机动升降装置(如图1中粗实线所示部分),解决了横梁的升降运动。具体方法是,将功率0.4千瓦、转速1380转/分的电动机1,安装在龙门刨原来电动机底座后面,由直径为φ75毫米的主动皮带轮2,通过皮带带 General old planer knife turret beams are mostly manual movements, the height of the beam adjustment, both laborious and laborious. Later, we built a B 209 gantry planer, equipped with a motorized lifting device (as shown in thick solid line in Figure 1), to solve the beam lifting movements. The specific method is that the power of 0.4 kilowatts, the speed of 1380 rev / min motor 1, installed in the planer behind the original motor base, the diameter of φ75 mm by the active pulley 2, through the belt