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A height measuring device for grid strip springs

A technology of height measuring device and strip, applied in the direction of measuring device, electric device, instrument, etc., can solve the problems of difficulty in aligning the highest point of the measuring spring, unable to reflect the true value of the spring height, inaccurate measurement results, etc. The effect of alignment, less time-consuming and accurate measurement results

Active Publication Date: 2018-07-27
CNNC JIANZHONG NUCLEAR FUEL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved in the present invention is: the existing strip spring height measurement method is inaccurate in positioning, it is difficult to find the highest point of the measured spring, the measurement result is inaccurate, and cannot reflect the true value of the spring height

Method used

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  • A height measuring device for grid strip springs
  • A height measuring device for grid strip springs

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, the grid strip spring height measuring device of the present invention includes: a base 1, and the base is a rectangular flat plate. In the middle part of the base 1, a rear measurement stopper 2 and a front measurement stopper 3 are arranged. The rear measurement stopper 2 and the front measurement stopper 3 are in the shape of a cuboid. The length direction of the base 1 is parallel.

[0026] The rear measurement block 2 is fixedly connected to the base 1, and two guide rods 4 are installed near the bottom surfaces of both sides of the rear measurement block 2, and the guide rods 4 pass through the rear measurement block 2 and the rear measurement block vertically in turn. The four parallel faces of the front measuring block 3 are locked at the end, so that the front measuring block 3 can move forward and backward along the guide rod 4 parallel to the base 1 . On the outside of the two guide rods 4, between the rear measurement block 2 and...

Embodiment 2

[0030] Such as figure 2 As shown, the difference between this embodiment and Embodiment 1 is that: on the surface of the base 1, at the position between the rear measurement stopper 2 and the front measurement stopper 3, along the rear measurement stopper 2 and the front measurement stopper The length direction of the block 3 is also provided with a strip positioning groove 8, which is used for positioning when the strip with the spring spot-welded is put into the measuring device.

[0031] A guide wheel set is also included, and the guide wheel set includes a positioning guide wheel 91 and a pressing guide wheel 92 . It plays the role of fast guiding and clamping on the strip, ensuring that the electric sensor head can contact the highest point of the strip spring with the largest area. The positioning guide wheel 91 and the compression guide wheel 92 are connected to the front and rear measuring plates by screws respectively. When the strip was put into the positioning gr...

Embodiment 3

[0033] The difference between this embodiment and Embodiment 2 is that two side baffles 10 are also provided at both ends of the positioning groove 8, and the side baffles 10 can be slid and fixed along the positioning groove 8, so that the two sides of the locating groove 8 can It acts as a limit during belt measurement.

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Abstract

The invention belongs to the technical field of nuclear fuel assembly manufacturing, and in particular relates to a grid strip spring height measuring device. The invention solves the problem that the existing strip spring height measurement method is inaccurate in positioning, it is difficult to find the highest point of the measuring spring, the measurement result is inaccurate, and the problem that the true value of the spring height cannot be reflected, and a measuring device is provided, including: a base , Rear measuring block, front measuring block, guide rod, buffer spring, eccentric hand wheel, electric probe, strip positioning groove, positioning guide wheel, pressing guide wheel, side baffle, measuring switch and display terminal. The measuring device of the present invention has accurate positioning, is easy to find the highest point of the measuring spring, and has accurate measurement results, and realizes automatic measurement of the heights of various strip springs, less time-consuming measurement, high measurement efficiency, and less damage to workpieces.

Description

technical field [0001] The invention belongs to the technical field of nuclear fuel assembly manufacturing, and in particular relates to a grid strip spring height measuring device. Background technique [0002] The grid is an important part of the fuel element. In the positioning grid, the spring is spot-welded on the strip to clamp the fuel rod. Therefore, the accuracy of the spring height has a great influence on the performance of the fuel assembly. [0003] In the existing spring height detection method, manual detection is performed by using a calibration measuring device composed of a standard block, a dial indicator and a measuring frame. During manual inspection, the measuring device is first calibrated with a standard block with a height of 1.90mm, and the deviation is required to be <±0.01mm. On the device for measuring the height of the springs, the springs are manually measured one by one with a dial indicator, and each piece needs to be measured front and b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B7/02
Inventor 王丹于小炎张永乐宋钢黄洋
Owner CNNC JIANZHONG NUCLEAR FUEL