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发明公开
CN106872092A 一种测力螺栓及轴向力的测试方法 有权

一种测力螺栓及轴向力的测试方法
摘要：
本发明属于机械连接技术领域，具体涉及测力螺栓及其轴向力的测试方法。一种测力螺栓，所述螺栓(2)包括螺栓头(2a)和螺杆(2b)，螺栓头(2a)上开设内孔，并向螺杆(2b)部位沿伸，其特征在于螺栓(2)内固定有芯体(1)，所述芯体(1)粘贴有应变片(3)，芯体(1)一端固定在螺栓杆(2b)内，另一端固定在螺栓头(2a)内，紧固螺栓后能产生应变力，应变片(3)通过应变测试线(4)与应变测试单元(6)连接。本发明提供一种测力螺栓及轴向力测量方法，在螺栓内孔内安装粘接有应变片的芯体，芯体与主体螺栓紧密固定，可以直接通过芯体上的应变片得到应变值，测得螺栓的轴向力值。
摘要（英）：

The present invention belongs to the mechanical connection technology field, and concretely relates to a force measurement bolt and an axial force test method. The force measurement bolt is provided, the bolt (2) comprises a bolt head (2a) and a screw (2b), and the bolt head (2a) is provided with an inner bore and is extended to the screw (2b) portion. A core (1) is fixed in the bolt (2), a strain gage (3) is pasted on the core (1), one end of the core (1) is fixed in the screw (2b), the other end of the core (1) is fixed in the bolt head (2a), the bolt is fastened to generate strain force, and the strain gage (3) is connected with a strain test unit (6) through a strain test wire (4). The force measurement bolt and the axial force test method are provided, the core pasted by the strain gage is installed in the bolt hole, and the core and a main body bolt are closely fixed so as to directly obtain a strain value through the strain gage on the core and measure the axial force value of the bolt.

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