公开(公告)号：EP0096911A3

公开(公告)日：1984-11-28

申请号：EP83200717

申请日：1983-05-20

申请人： Case Poclain Corporation Limited

发明人： Hodgson, Eric Charles ,  Weyman, Roger Michael

IPC分类号： F16H03/08 ,  F16H57/02

CPC分类号： F16H3/0915 ,  F16H2200/0043

摘要： Heavy-duty vehicles such as agricultural tractors frequently have a stepped ratio-change gearbox in series with one or more additional gearboxes one of which is a multi-range and reverse gearbox. To minimise the size, weight and cost of a gearbox providing four ratios, only three gear pairs are employed. The gearbox has co-axial input and output shafts (11 and 12), a parallel layshaft (13) with three integral gears (25,28 and 31), two gears (26 and 29) respectively rotateable on and clutchable to the input and output shafts (11 and 12) and meshing constantly with two of the gears (28 and 31) on the layshaft (13), and a gear (14) rotateable on the input and output shafts (11 and 12), clutchable to either or both of these shafts, and meshing constantly with the other gear (25) on the layshaft (13).