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Bolt pre-tightening force testing device and control method thereof

A technology of bolt pre-tightening force and control method, which is applied in the measurement of hydraulic/pneumatic force, and the measurement of torque/torsion force during tightening, which can solve the problems of inaccurate test results, increase test costs, and low work efficiency, and reduce The cost of experimental equipment, the effect of improving the accuracy of the test, and improving the work efficiency

Active Publication Date: 2012-06-27
TIANJIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

[0006] Existing test equipment is huge, which increases the cost of testing, and is inconvenient to use, resulting in low work efficiency and inaccurate test results

Method used

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  • Bolt pre-tightening force testing device and control method thereof
  • Bolt pre-tightening force testing device and control method thereof
  • Bolt pre-tightening force testing device and control method thereof

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Embodiment Construction

[0036] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0037] In order to realize the indirect measurement of the relationship between the bolt pre-tightening angle and the pre-tightening force, so as to meet the requirements of testing the bolt pre-tightening force, the method is simple and reduces the cost of experimental equipment, see figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 and Figure 6 , the embodiment of the present invention provides a device for testing the pretightening force of bolts, see the following description for details:

[0038] A device for testing the pre-tightening force of bolts, comprising: a first connecting plate 7, a second connecting plate 8 arranged parallel to the first connecting plate 7, and a connection between the top of the first connec...

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Abstract

The invention discloses a bolt pre-tightening force testing device and a control method thereof. The bolt pre-tightening force testing device comprises a first connecting plate and a second connecting plate parallel to the first connecting plate, a first supporting plate with a through hole at the center is connected between tops of the first connecting plate and the second connecting plate, and is fixed on the first connecting plate and the second connecting plate via four groups of first bolt components, a second supporting plate with a groove and a center through hole is connected between bottoms of the first connecting plate and the second connecting plate, and is fixed on the first connecting plate and the second connecting plate via four groups of second bolt components, and a fixing plate with the width matching with that of the groove is disposed in the groove of the second supporting plate. The relation between a bolt pre-tightening angle and pre-tightening force is measured indirectly, so that requirements on test of pre-tightening force of bolts are met. In addition, the method is simple, cost of experimental equipment is lowered, and work efficiency and test precision are improved.

Description

technical field [0001] The invention relates to the mechanical field, in particular to a device for testing the pretightening force of bolts and a control method thereof. Background technique [0002] Bolted connection is the most common detachable connection, and preload is an important performance index that needs to be measured during bolt tightening. Appropriate pre-tightening force can improve the reliability of the connection and the fatigue strength of the bolt, and the air tightness can be improved for the connection with tightness requirements. However, excessive pre-tightening force will cause damage to bolts and connecting parts. Therefore, for important bolted connections, in order to ensure that the connection reaches the required pre-tightening force without overloading the parts, it is necessary to strictly control the pre-tightening force during assembly. . [0003] At present, there are generally two ways to control the pretightening force: controlling the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01L5/24G01L1/02
Inventor 何柏岩石光达陈寺专孙阳辉
Owner TIANJIN UNIV
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