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液压泵的驱动轴从结构上大多不能承受外界的径向和轴向载荷,所以电动机和液压泵必须同心。绝对的同心是很难办到的,我们只能借助于联轴器的结构对其进行修正。最近我们看到西德KupplungstechnikG.M.B.H生产的联轴器(称:鼓形联轴器)如图示,这种联轴器最大的特点:一是两个半联轴器齿形呈圆弧,使其角位移量α和径向位移y得到很大的改善,它一般允许α≤3°、y≤0.4～3.8 mm而通常使用的NZ型α≤40′,y≤0.2～0.5mm。其二是外壳用高强度工程塑料注射成型,强度高,耐腐蚀或磨损,在无油润滑的情况
The hydraulic drive shaft from the structure most of the outside can not afford radial and axial load, so the motor and hydraulic pump must be concentric. Absolute concentricity is difficult to handle, we can only use the structure of the coupling to be amended. Recently, we see the KudelungstechnikG.MBH West Germany coupling (drum connector) as shown, the biggest features of this coupling: First, the two half-tooth coupling tooth profile, So that its angular displacement α and radial displacement y are greatly improved, which generally allows α ≤ 3 °, y ≤ 0.4 ~ 3.8 mm NZ type commonly used α ≤ 40 ’, y ≤ 0.2 ~ 0.5mm. The second is the shell with high-strength plastic injection molding, high strength, corrosion resistance or wear, in the case of oil-free lubrication