Intelligent bolt with pretightening force and temperature rising monitoring
A technology of intelligent bolt and pre-tightening force, applied in the direction of bolts, screws, nuts, etc., can solve problems such as inconvenience of use
Inactive Publication Date: 2015-07-22
杨志强
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
[0012] The existing method is basically a wired method, which is inconvenient to use. In addition, it is used for monitoring in special environments. For example, the fastening bolts in a high-voltage environment must ensure isolation between high and low potentials. The wired method is unacceptable.
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Embodiment Construction
[0021] The specific implementation manners of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0022] See attached figure 1 -2, the present invention includes a bolt body 1, a strain gauge 3, filled with binding glue 9, a stepped hole 11 is set at the center of the top of the bolt body 1, and the strain gauge 3 is set in the small round hole 12 of the stepped hole 11, and filled The binding glue 9 is filled in the small round hole 12 of the step hole 11, the temperature sensor 4 is also arranged in the small round hole 12 of the step hole 11, and the diameter of the small round hole 12 is less than 2mm, and the filling and binding The glue 9 has a good heat conduction function, a circuit board 5 is arranged in the large hole of the step hole 11, and the circuit board 5 includes signal conditioning, control, and wireless modules, and an antenna 8 is arranged on the upper part of the bolt body 1, and the antenna 8 c...
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Abstract
The invention discloses an intelligent bolt with pretightening force and temperature rising monitoring. The intelligent bolt comprises a bolt body, a strain gage and filling binding glue. A step hole is formed in the center of the top of the bolt body. The stain gage is arranged in a small circular hole of the step hole. The filling binding glue is arranged in the small circular hole of the step hole in a filling mode. The intelligent bolt is characterized in that a temperature sensor is arranged in the small circular hole of the step hole, the diameter of the small circular hole is smaller than 2 mm, the filling binding glue has good heat conducting function, a circuit board is arranged in a large hole of the step hole, a signal conditioning module, a control module and a wireless module are arranged on the circuit board, an antenna is arranged on the upper portion of the bolt body, the antenna covers the whole opening part of the large hole of the step hole, and the antenna is connected with the circuit board through an antenna connector. The invention mainly relates to the industrial field.
Description
technical field [0001] The invention relates to the industrial field, in particular to an intelligent bolt with pretightening force and temperature rise monitoring. Background technique [0002] The bolt pretightening force is the pretightening force along the direction of the bolt axis generated between the bolt and the connected parts under the action of the tightening torque during the bolt tightening process. For a specific bolt, the magnitude of its pre-tightening force is related to the tightening torque of the bolt, the friction between the bolt and the nut, and the friction between the nut and the connected parts. [0003] Pre-tightening can improve the reliability, anti-loosening ability and fatigue strength of the bolted connection, and enhance the tightness and rigidity of the connection. In fact, a large number of tests and use experience have proved that higher preload is beneficial to the reliability of the connection and the life of the connection, especially...
Claims
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Login to View More IPC IPC(8): F16B41/00F16B35/00
CPCF16B41/00F16B35/00
Inventor 杨志强
Owner 杨志强