Noise measuring instrument

Abstract

The invention discloses a noise measuring instrument, which is applied to a cutting machine tool. The instrument comprises a base on which the cutting machine tool is fixed, a first sliding frame, a sound level meter and a sound insulation device, wherein two parallel inner sliding grooves and two parallel outer sliding grooves are symmetrically arranged in positions, located on two sides of the cutting machine tool, of the base along a length direction of the base; the first sliding frame is an inverted U-shaped structure, and the sliding frame is arranged in the two inner sliding grooves; and the sound level meter is fixed to a horizontal part of the first sliding frame, a plurality of heat dissipation openings are arranged in a surface of a shell of the sound level meter, and surfaces of the heat dissipation openings are covered with breathable films. By arranging the sound insulation device, a noise of an external environment can be effectively shielded, and a noise condition of the cutting machine tool can be efficiently measured; and the sound level meter is fixed on the first sliding frame, and the first sliding frame slides along the two inner sliding grooves so that three-dimensional measurement of the noise of the cutting machine tool can be realized, and a condition a measurement result is not accurate because of fixation at one place is avoided.

Description

technical field [0001] The invention relates to the field of noise testing, in particular to a noise measuring instrument. Background technique [0002] At present, the machinery industry has more and more needs for measuring the noise of cutting machine tools. However, since there is no noise measurement equipment for cutting machine tools on the market, it is difficult to measure the noise on-site. It can only be carried out in a special anechoic room, but the anechoic room The high construction cost limits its widespread application; the noise measuring instruments currently on the market, such as sound level meters, are susceptible to external interference, resulting in inaccurate measurements. Contents of the invention [0003] The object of the present invention is to provide a noise measuring instrument to solve the problems raised in the background art above. [0004] In order to achieve the above object, the present invention provides the following technical solu...

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Problems solved by technology

[0002] At present, the machinery industry has more and more needs for measuring the noise of cutting machine tools, but because there is no noise measurement equipment for cutting machine tools on the market, it is difficult to measure the noise on-site, and it can only be carried out in a special anechoic room, but the anechoic room The high construction cost limits its general application; the noise measuring instruments currently on the market, such as sound level meters, are susceptible to external interference, resulting in inaccurate measurements

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