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Measuring point determination device and measuring point determination method

A technology for determining devices and measuring points, applied in the directions of measuring devices, mechanical measuring devices, injection devices, etc., can solve the problem of difficulty in ensuring the accuracy of distance values, and achieve the effect of ensuring accuracy and improving accuracy.

Active Publication Date: 2022-07-08
GUANGZHOU TESTING CENTRE OF CONSTRUCTION QUALITY AND SAFETY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The on-site point placement is mainly carried out manually, and a tape measure is generally used to measure the distance from the position of the measuring point to the position of the bottom of the beam ( figure 1 In h), this method is more difficult to guarantee the accuracy of the distance value

Method used

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  • Measuring point determination device and measuring point determination method
  • Measuring point determination device and measuring point determination method
  • Measuring point determination device and measuring point determination method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like Figure 2 to Figure 4 As shown, this is an embodiment of the present invention, specifically: a measuring point determination device, comprising a first telescopic rod 1 and a second telescopic rod 2 connected to each other, the axis direction of the first telescopic rod 1 and the second telescopic rod The axis direction of 2 is provided with an included angle. like image 3 As shown, the second telescopic rod 2 can be retracted to make the first telescopic rod 1 abut the bridge, the end of the first telescopic rod 1 is used to mark the position of the point to be measured, and the length of the first telescopic rod 1 is used to determine the point to be measured The distance value h is guaranteed to ensure the accuracy of the distance value h. When the first telescopic rod 1 is contracted by the abutment of the bridge, the accuracy of the bending influence distance value h can be reduced. Measure the shape parameters of objects, such as figure 1 In the angle A...

Embodiment 2

[0028] Different from Embodiment 1, it also includes a connecting structure, which is respectively connected with the second telescopic rod 2 and the object to be measured; A first adjustment device for inclination. The connection structure enables the measuring point determination device to be fixed on the bridge, so as to avoid soreness caused by the user's long-term support with their hands. By arranging the first adjustment device, after the measurement point determination device is installed on the bridge using the connecting structure, the second telescopic rod 2 can be kept in contact with the bottom surface of the bridge, so as to ensure the accuracy of measurement. The first rotation direction can be set on the plane where the cross-section of the bridge is located, that is, the second telescopic rod 2 can rotate on the plane where the cross-section of the bridge is located. The measuring point determination device can be applied under the condition that the bridge i...

Embodiment 3

[0033] Different from Embodiment 2, the second telescopic rod 2 is provided with a chute 21, the third telescopic rod 5 is provided with a connecting block 51, the connecting block 51 is pivotally connected to the third telescopic rod 5, and the connecting block 51 is connected to the chute. 21 is slidingly connected; one end of the fourth telescopic rod 6 is pivotally connected with the second telescopic rod 2 , and one end of the fourth telescopic rod 6 is fixedly connected with the connecting block 51 .

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Abstract

The invention discloses a measuring point determination device, comprising a first telescopic rod and a second telescopic rod which are connected to each other, and an included angle is set between the axial direction of the first telescopic rod and the axial direction of the second telescopic rod. The second telescopic rod can be retracted so that the first telescopic rod abuts the object to be measured, such as a bridge, the end of the first telescopic rod is used to mark the position of the point to be measured, and the length of the first telescopic rod is used to determine the distance of the point to be measured value to ensure the accuracy of the distance value. The first telescopic rod is contracted by the object to be measured, which can reduce the accuracy of the distance value affected by the bending. At this time, the first telescopic rod, the second telescopic rod, the contour to be measured and the figure encircled by the object to be measured can be used. According to the shape parameters, the changed length of the first telescopic rod can be accurately calculated, the accurate distance value of the point to be measured can be obtained, and the accuracy of the position of the measuring point can be improved.

Description

technical field [0001] The invention relates to the technical field of bridges, in particular to the technical field of bridge detection. Background technique [0002] After the bridge is put into use, the bridge needs to be tested regularly or irregularly, including the strain detection of the bridge to reflect the internal force of the bridge. For cross-sections of bridges, such as figure 1 The position of the neutral axis of the bridge and the relevant parameters of the shape of the cross-section of the bridge will be marked in the completion data, such as figure 1 in the corner A. According to the formula, strain=My / (EI), where M, E, and I are the same for the same cross-section. In actual measurement, h and the position data of the neutral axis are usually used to represent y, so the installation position h of the measuring point is directly It affects the correlation between test data and theoretical values, the actual distribution of stress gradients, and the neutr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B5/20G01B5/02G01B5/00B05B13/00
CPCG01B5/20G01B5/02G01B5/0002B05B13/00
Inventor 李星张鹏钟晓林赵展韦先林肖金辉谢明娜魏耀成周康明
Owner GUANGZHOU TESTING CENTRE OF CONSTRUCTION QUALITY AND SAFETY CO LTD
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