Bolt axial load measuring equipment and measuring method

Abstract

The invention discloses bolt axial load measuring equipment and a measuring method. The bolt axial load measuring equipment includes an integrated measuring support, the integrated measuring support is treated as a measuring platform, a bolt load fixing component is arranged on a support platform of the upper part of the integrated measuring support, and a torque gun arranged on the left side of the integrated measuring support applies force to a measured bolt arranged in the bolt load fixing component, thus the entire bolt load fixing component is pushed to move towards right; the bolt load fixing component is connected with a force sensor, when the bolt load fixing component is pushed to move towards the right, the bolt load fixing component applies force to the force sensor, axial loaddata are generated, and finally the axial load data are displayed through display equipment connected with the force sensor in a signal mode. According to the bolt axial load measuring equipment and the measuring method, it is measured that the displacement change of a measured piece transforms force variation, thus axial force applied to the bolt is acquired, the test method is precise, and stronger theoretical foundation is provided for monitoring parameters of angles and moment of force of a follow-up craft department.

Description

technical field

[0001] The invention relates to the field of measuring equipment, in particular to an axial load measuring equipment and a measuring method applied to bolts used as connecting parts. Background technique

[0002] At present, bolts are often used as connectors between parts in various machinery production and assembly industries, because the selection of bolts is very important, and non-professional designers usually do it according to mechanical manuals or national standards. The relevant bolt selection does not distinguish between the axial force and the end face compression force of the bolt. Therefore, only the angle and torque of the bolt are considered during the bolt manufacturing process.

[0003] However, with the application of bolt connection in various component connection occasions, its selection parameters are becoming more and more rigorous. The most effective way to control the torque of bolts in the prior art is to perform dual monitoring of a...

Examples

Embodiment

[0041] like figure 2 As shown, in this embodiment, a torque wrench is used to tighten to the target torque T 0 , record the sensor reading f' at this time, that is, the axial load of the bolt, and the guaranteed load f of the bolt under test 0 Contrast, f'-f 0≤0 is regarded as qualified, the specific data is shown in the table below

[0042] Tested bolt number (No.)

Target torque (T 0 )

Axial load (f')

Guaranteed load (f 0 )

1

45Nm

25.6kN

30.4kN

2

45Nm

24.2kN

30.5kN

3

45Nm

28.1kN

30.6kN

[0043] Table 1 uses the measured data table of a kind of bolt axial load measuring equipment and measuring method of the present invention

[0044] A bolt axial load measurement device and measurement method of the present invention converts the change of displacement of the measured piece into force change, thereby knowing the axial force received by the bolt, the detection method is accurate, and the ang...

technical field

[0001] The invention relates to the field of measuring equipment, in particular to an axial load measuring equipment and a measuring method applied to bolts used as connecting parts. Background technique

[0002] At present, bolts are often used as connectors between parts in various machinery production and assembly industries, because the selection of bolts is very important, and non-professional designers usually do it according to mechanical manuals or national standards. The relevant bolt selection does not distinguish between the axial force and the end face compression force of the bolt. Therefore, only the angle and torque of the bolt are considered during the bolt manufacturing process.

[0003] However, with the application of bolt connection in various component connection occasions, its selection parameters are becoming more and more rigorous. The most effective way to control the torque of bolts in the prior art is to perform dual monitoring of a...

Examples

Embodiment

[0041] like figure 2 As shown, in this embodiment, a torque wrench is used to tighten to the target torque T 0 , record the sensor reading f' at this time, that is, the axial load of the bolt, and the guaranteed load f of the bolt under test 0 Contrast, f'-f 0≤0 is regarded as qualified, the specific data is shown in the table below

[0042] Tested bolt number (No.)

Target torque (T 0 )

Axial load (f')

Guaranteed load (f 0 )

1

45Nm

25.6kN

30.4kN

2

45Nm

24.2kN

30.5kN

3

45Nm

28.1kN

30.6kN

[0043] Table 1 uses the measured data table of a kind of bolt axial load measuring equipment and measuring method of the present invention

[0044] A bolt axial load measurement device and measurement method of the present invention converts the change of displacement of the measured piece into force change, thereby knowing the axial force received by the bolt, the detection method is accurate, and the ang...

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