Flat plate vibration test clamp and installation method and calibration method thereof
A vibration test, vibration test bench technology, applied in vibration testing, measuring devices, testing of machine/structural components, etc., can solve problems such as reducing stress concentration, and achieve reduced stress concentration, the best test effect, and avoid stress. concentrated effect
Active Publication Date: 2013-04-10
AECC COMML AIRCRAFT ENGINE CO LTD
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Problems solved by technology
[0004] The present invention aims at the shortcoming that stress concentration is easily generated at the clamping place of the current plate vibration test fixture, and a spacer is added in the clamping groove of the fixture, and the stress concentration is reduced by selecting the hardness of the spacer
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[0033] Hereinafter, a description of preferred embodiments of the present invention will be provided in detail with reference to the accompanying drawings.
[0034] figure 1 It is a structural schematic diagram of the plate vibrating clamp of the present invention, which is composed of a first chuck 1 and a second chuck 1 ′, an adjusting washer 6 , a connecting piece (bolt) 4 and an adjustable counterweight 9 . The first chuck 1 and the second chuck 1' are arranged symmetrically with respect to the flat test piece 8 (each chuck itself is also symmetrical with respect to the flat test piece 8), and respectively include chuck clamping parts 11, 11' and chuck base 12, 12'. There is a clamping groove between the chuck clamping parts 11, 11', and rubber gaskets 6, 6' are installed in the clamping groove, and the flat test piece 8 is clamped therebetween. The chuck clamping parts 11, 11' are connected to the adjusting washer 6 through the connecting pieces (bolts) 4 at both ends t...
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The invention provides a test clamp used for flat plate vibration tests. The test clamp comprises two clamp heads, two adjustable counter weights, an adjustment gasket and a plurality of connection parts. Each clamp head comprises a clamp head clamping portion and a clamp head base, wherein the clamp heads are symmetrically arranged relative to a flat plate test part, one end of the flat plat test part is clamped in a clamping groove arranged between the clamp head clamping portions, the clamp head base of the first clamp head is fixedly connected with the position of a vibration test stand, and the clamp head base of the second clamp head is adjustably connected with the position of the vibration test stand. The two adjustable counter weights are symmetrically arranged relative to the flat plate test part and clamp the other end of the flat plate test part. The adjustment gasket is arranged in the clamping groove arranged between the clamp head clamping portions and is connected with the flat plate test part. The plurality of connection parts are symmetrically arranged at two ends of each clamp head clamping portion and tightly connect the clamp head clamping portions and the adjustment gasket, and accordingly the flat plate test part is tightly clamped. The invention further provides an installation method and a calibration method of the vibration test clamp.
Description
technical field [0001] The invention relates to a vibration test fixture, in particular to a plate vibration test fixture and its installation method and calibration method. Background technique [0002] The vibration test fixture is used to firmly fix the test piece on the working table of the vibrating table and transmit the vibration of the vibrating table to the test piece. Its quality is directly related to the quality of the test. However, the importance of test fixtures is generally not paid enough attention at present, especially in China, some testers only design fixtures based on their feelings, and there is no necessary calculation and analysis during design, and there is no necessary inspection and testing. The vibration transmitted by such a fixture often has great distortion, and the vibration magnitude of each point on the fixture varies greatly, that is, the uniformity is very poor. There are multiple resonances in the test frequency band, and vibration cont...
Claims
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Inventor 侯亮侯乃先柴象海
Owner AECC COMML AIRCRAFT ENGINE CO LTD