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Portable hardometer

A hardness tester, a portable technology, applied in the field of improvement of the hardness tester, can solve the problems of inconvenient portability, large size, and can only be used for the detection of horizontal objects, etc., and achieve the effect of high output voltage, wide detection range and accurate detection

Inactive Publication Date: 2009-06-10
李汀
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the existing hardness testers are desktop structures, which use uniform pressure to deform the object to be detected, and then detect the hardness of the object according to the amount of deformation. undetectable
There is another Rockwell portable hardness tester, which uses a screw to drive the extrusion head. The back of the object to be tested needs to be limited, that is, two surfaces are used, so it can only detect thin and small workpieces; while the Leeb portable hardness tester It adopts the principle of impact, and an acceleration sensor is installed in the impact hammer to detect the hardness of the object according to the rebound acceleration of the impact hammer. However, the impact hammer of this hardness tester is in free fall when it works, and can only be used for the detection of horizontal objects. The object to be measured must be placed horizontally, so it is not suitable for the detection of unusually large objects

Method used

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Embodiment Construction

[0011] The hardness tester of the embodiment is composed of an impact sensor and a host including a detection signal processing circuit.

[0012] The structure of the impact sensor is as figure 1 As shown, it is made up of a base 3, an impact column 9, an energy storage spring 12, a trigger 2, a piezoelectric ceramic 6 and an impact head 8.

[0013] Support 3 is the seat of a two-section cylindrical structure, and a through hole is a guide hole in the center of the first half, and a cavity is in the lower half.

[0014] Collision post 9 is movably worn in the guide hole of support 3, and can be telescopically moved. Collision post 9 is covered with energy storage spring 12, which is located between the bottom of guide hole and 9 front ends of percussion post.

[0015] The base 3 is provided with a trigger 2 and a controllable release device composed of the trigger 2 and the energy storage spring 12 .

[0016] When the impact column 9 moves up, the trigger 2 is stuck on the r...

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PUM

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Abstract

The invention relates to a portable sclerometer, comprising an impact microphone and a test signal processing circuit, wherein the impact microphone is composed of an engine base, a strike column, a power spring, a trigger and piezoelectric ceramic and a strike head tabled in the strike column, with the head clung with the strike head. In the test signal processing circuit, piezoelectric ceramic output lines are connected with a rectification circuit, a voltage follower, a capacitance storage circuit, an indicating circuit in turn through a transformer. The invention is suitable for testing of each type of bulk objects under the non-vertical state, in addition, the invention has the advantages of high sensitivity, correct testing and wide testing range.

Description

technical field [0001] The invention relates to a testing device, in particular to an improvement on a hardness tester. Background technique [0002] Most of the existing hardness testers are desktop structures, which use uniform pressure to deform the object to be detected, and then detect the hardness of the object according to the amount of deformation. Unable to detect. There is another Rockwell portable hardness tester, which uses a screw to drive the extrusion head. The back of the object to be tested needs to be limited, that is, two surfaces are used, so it can only detect thin and small workpieces; while the Leeb portable hardness tester It adopts the principle of impact, and an acceleration sensor is installed in the impact hammer to detect the hardness of the object according to the rebound acceleration of the impact hammer. However, the impact hammer of this hardness tester is in free fall when it works, and can only be used for the detection of horizontal objec...

Claims

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Application Information

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IPC IPC(8): G01N3/48
Inventor 李汀
Owner 李汀
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