公开(公告)号：EP2391876A2

公开(公告)日：2011-12-07

申请号：EP08736942.7

申请日：2008-04-11

申请人： Crane Electronics Ltd

发明人： EVERITT, Peter, William ,  TYERS, Ben, William ,  CHAPMAN, Andrew ,  BURTON, John, Edward

IPC分类号： G01L5/00 ,  G01L5/24 ,  G01L25/00

CPC分类号： G01L5/0042 ,  G01L5/24 ,  G01L25/003

摘要： A variable torque-rate test point for the performance testing of rotary tools for threaded fasteners comprises a screw-threaded bolt (1) having a moment of inertia comparable to that of a bolt to be tightened using the rotary tool. The bolt (1) is tightened in the test joint against a torque-rate adjustment device (6) which can be adjusted to simulate a hard or a soft joint. The adjustment device (6) comprises a washer portion (7) beneath the bolt head (4), at least one spring beam (8) extending from a reaction point (9) radially outwardly of the bolt (1), and a pivotal bearing member (10) or other pivot means at a mid portion of the beam (8). The beam (8) flexes as it extends in cantilever over the pivot point, and that flexure can be adjusted to vary the torque-rate of the test joint by varying the distance between the pivot point and the rotary axis of the bolt (1).

摘要翻译： 一种可变扭矩速率测试点的旋转工具对螺纹紧固件的性能测试包括螺纹螺栓（1）具有的转动惯量媲美做了螺栓的使用旋转工具紧固。 螺栓（1）中针对可被调节，以模拟硬或软接头的关节扭矩速率调整装置（6）的测试被拧紧。 所述调节装置（6）包括一个垫圈部（7）的螺栓头下方（4），至少一个弹性梁（8）从反应点（9）沿径向向外的螺栓（1），和一个枢转轴承扩展 构件（10）或在所述光束（8）的中间部分以外枢轴。 束（8）弯曲，因为它在悬臂在枢轴点延伸，并没有挠曲可以调整通过改变枢转点和所述螺栓的旋转轴线之间的距离，以改变测试接头的转矩率（1） ，