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1. 发明授权

US5449148A Levelling device 失效
标题翻译：调平装置
公开(公告)号：US5449148A
公开(公告)日：1995-09-12
申请号：US204774
申请日：1994-03-02
申请人： B. J. McPherson
发明人： B. J. McPherson
IPC分类号： B23Q1/00 , B23Q1/60 , B25B1/08
CPC分类号： B23Q1/60 , B23Q1/0054
摘要： A levelling apparatus for use between a structural frame member defining a first plane and a supporting member defining a second plane, vertically adjustable between raised and lowered positions, comprising a base section having first and second inclined surfaces, a top section having first and second inclined surfaces, and first and second pairs of half wedge members disposed intermediate the base and top section, the half wedge members having inclined faces mating with the complementary surfaces formed on the base and top section. A threaded rod is disposed longitudinally within the levelling device, passing through the pairs of half wedges members and brackets engaging the back sides of the half wedge members, with nuts threadingly engaging each end of the threaded rod. Rotation of one or both nuts causes longitudinal translation of the half wedge members and resulting vertical adjustment of the levelling device. The half wedge members are pivotable about lateral pivot pins, so that substantially constant contact is maintained between the top and base section when the base section is tilted due to an inclined support surface. Braces secured to the opposite ends of the pivot pins cooperate with the brackets to prevent lateral displacement of the components. The top section is angularly adjustable relative to the base section to compensate for an uneven support surface.
摘要翻译：一种用于限定第一平面的结构框架构件和限定第二平面的调平装置，其在升高和降低位置之间可垂直调节，包括具有第一和第二倾斜表面的基部，具有第一和第二倾斜面的顶部表面以及设置在基部和顶部之间的第一和第二对半楔形构件，所述半楔形构件具有与形成在基部和顶部上的互补表面配合的倾斜面。螺纹杆纵向设置在整平装置内，穿过成对的半楔形构件和支架接合半楔形构件的后侧，螺母与螺杆的每个端部螺纹地接合。一个或两个螺母的旋转导致半楔形构件的纵向平移并且导致调平装置的垂直调整。半楔形构件可围绕横向枢轴销枢转，使得当基部由于倾斜的支撑表面而倾斜时，在顶部和底部之间保持基本上恒定的接触。固定到枢轴销的相对端的支架与支架配合以防止部件的横向移位。顶部相对于基部可角度地调节以补偿不平坦的支撑表面。

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