公开(公告)号：US4884934A

公开(公告)日：1989-12-05

申请号：US101030

申请日：1987-09-25

申请人： Takashi Ikeda ,  Euji Tsunoda

发明人： Takashi Ikeda ,  Euji Tsunoda

IPC分类号： B23P19/06 ,  B25B29/02 ,  F01D25/24 ,  F16B31/04 ,  F16B35/00

CPC分类号： B23P19/068 ,  B25B29/02 ,  F01D25/243 ,  F16B31/043 ,  Y10S411/914 ,  Y10S411/916 ,  Y10T29/4976 ,  Y10T29/49863

摘要： A junction bolt for joining members by use of clamping nuts engaged with the junction bolt is provided with an axial inner hollow hole in which a piston member is located so as to define a space between the outer peripheral surface of the piston member and the inner wall of the junction bolt. The space is divided by a sealing member into a pressurizing space into which a pressurized fluid is introduced and a temperature adjusting space into which a heat medium is introduced. In the bolt clamping force adjusting method, the temperature of the junction bolt is first adjusted to a predetermined temperature and an extending amount of the junction bolt to be caused when an aimed clamping force is applied at this predetermined temperature. The pressurized fluid having a pressure corresponding to one required for causing the calculated extending amount is introduced into the pressurizing space to thereby extend the junction bolt body, and under the extended condition, the bolt is clamped by the clamping nuts till the nuts closely contact to the members to be joined. Finally, the pressurized fluid is discharged to contract the junction bolt so as to set the clamping force to a predetermined value.

摘要翻译： 用于通过使用与接合螺栓啮合的夹紧螺母连接构件的接合螺栓设置有轴向内部空心孔，其中活塞构件被定位成在活塞构件的外周表面和内壁之间限定空间 的连接螺栓。 空间被密封构件分成加压空间，加压流体被引入加压空间中，温度调节空间被引入热介质。 在螺栓夹紧力调节方法中，首先将接合螺栓的温度调节到预定温度，并且在该预定温度下施加目标夹紧力时引起的接合螺栓的延伸量。 具有对应于使计算出的延伸量所需的压力的加压流体被引入加压空间中，从而延长接合螺栓本体，并且在延伸状态下，螺栓被夹紧螺母夹紧直到螺母紧密接触 要加入的会员 最后，加压流体被排出以收合连接螺栓，以将夹紧力设定在预定值。