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Rebound value calibration device

A standard device and rebound value technology, which is applied in the field of precision instruments, can solve problems such as inconsistencies in the values ​​of rebound hammers, large differences, and the inability to perform unified calibration of rebound hammers, so as to achieve easy measurement, good repeatability, and improved Measuring the Effects of Accuracy and Stability

Inactive Publication Date: 2014-03-12
曾汉
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there is no standard device for the rebound value of the rebound hammer at home and abroad, and its verification and calibration adopts the component method, so the value of the rebound hammer at home and abroad is not uniform, and the value of the rebound hammer produced by different domestic enterprises is not uniform. Even the difference is relatively large, resulting in the inability of the existing rebound hammer to be calibrated uniformly, which brings inconvenience to the use

Method used

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Examples

Experimental program
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Effect test

specific Embodiment 1

[0019] combined with figure 2, a rebound value standard device, which includes a frame 1, a bounce rod 2, a rebound value measuring mechanism 3, a bounce hammer 4, a center guide rod 5, a guide rod mounting bolt 6 and a bounce hammer positioning release mechanism 7 The guide rod installation bolt 6 is installed on the beam of the frame 1, the guide rod installation bolt 6 links to each other with the upper end of the center guide rod 5, the lower end of the center guide rod 5 links to each other with the ejection rod 2, and the center guide rod 5 The upper and lower ends are also provided with buffer compression springs 9 respectively, and the spring hammer 4 is slidably sleeved on the center guide rod 5. The positioning release mechanism 7 of the spring hammer is movably installed on the frame 1 for adjusting the spring. The initial potential energy of the hammer 4 and the clamping and release of the elastic hammer 4 during the test, the rebound value measuring mechanism 3 i...

specific Embodiment 2

[0021] combined with image 3 , a rebound value standard device, which includes a frame 1, a bounce rod 2, a rebound value measuring mechanism 3, a bounce hammer 4, a center guide rod 5, a guide rod mounting bolt 6 and a bounce hammer positioning release mechanism 7 The guide rod installation bolt 6 is installed on the beam of the frame 1, the guide rod installation bolt 6 links to each other with the upper end of the center guide rod 5, the lower end of the center guide rod 5 links to each other with the ejection rod 2, and the center guide rod 5 The upper and lower ends are also provided with buffer compression springs 9 respectively, and the spring hammer 4 is slidably sleeved on the center guide rod 5. The positioning release mechanism 7 of the spring hammer is movably installed on the frame 1 for adjusting the spring. The initial potential energy of the hammer 4 and clamping and releasing the elastic hammer 4 during the test, the rebound value measuring mechanism 3 is ins...

specific Embodiment 3

[0026] combined with Figure 4 , a rebound value standard device, which includes a frame 1, a bounce rod 2, a rebound value measuring mechanism 3, a bounce hammer 4, a center guide rod 5, a guide rod mounting bolt 6 and a bounce hammer positioning release mechanism 7 The guide rod installation bolt 6 is installed on the beam of the frame 1, the guide rod installation bolt 6 links to each other with the upper end of the center guide rod 5, the lower end of the center guide rod 5 links to each other with the ejection rod 2, and the center guide rod 5 The upper and lower ends are also provided with buffer compression springs 9 respectively, and the spring hammer 4 is slidably sleeved on the center guide rod 5. The positioning release mechanism 7 of the spring hammer is movably installed on the frame 1 for adjusting the spring. The initial potential energy of the hammer 4 and the clamping and release of the elastic hammer 4 during the test, the rebound value measuring mechanism 3 ...

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Abstract

The invention provides a rebound value calibration device which is high in measurement accuracy. Based on the gravity action, the rebound value calibration device comprises a stander (1), an elastic striking rod (2), a rebound value measurement mechanism (3), an elastic striking hammer (4), a center guide rod (5), a guide rod mounting bolt (6) and an elastic striking hammer positioning and releasing mechanism (7), wherein the guide rod mounting bolt (6) is arranged on a cross beam of the stander (1) and is connected with the upper end of the center guide rod (5); the lower end of the center guide rod (5) is connected with the elastic striking rod (2); the upper end and the lower end of the center guide rod (5) are respectively provided with buffering pressure springs (9); the center guide rod (5) is sleeved with the elastic striking hammer (4) in a sliding manner; the elastic striking hammer positioning and releasing mechanism (7) is movably arranged on the stander (1); the rebound value measurement mechanism (3) is arranged on the stander and is a non-contact measurement mechanism; a platform is arranged below the elastic striking rod (2); a distance between the elastic striking rod (2) and the platform is adjustable.

Description

technical field [0001] The invention relates to a precision instrument for measuring the rebound value, which is used for measuring the compressive strength of materials such as concrete, mortar specimens and bricks, or for the calibration and verification of the rebound meter calibration device, specifically refers to a A free-fall rebound value standard device based on gravity. Background technique [0002] The rebound tester was invented by E. Schmidt in Switzerland in 1948. It is used as a non-destructive testing instrument for testing the compressive strength of concrete in engineering structures or components. The traditional rebound hammer is divided into mechanical rebound hammer, resistive rebound hammer and non-contact photoelectric rebound hammer. Its principle is to use a spring to drive the hammer and hit the concrete surface through the bullet rod to measure the hardness of the concrete surface, that is, The rebound value R uses the instantaneous elastic defor...

Claims

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Application Information

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IPC IPC(8): G01N3/62G01N3/52
Inventor 曾利民辛新曾汉
Owner 曾汉
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