Draw-bar box horizontal noise testing method

Abstract

The invention relates to a draw-bar box horizontal noise testing method which comprises the steps that: two to-be-tested pavements are selected, and an anechoic chamber is built; a plurality of to-be-tested draw-bar boxes are prepared; running guide rail devices are arranged on the two sides of the to-be-tested pavements, movable semi-fixing devices are mounted in the running guide rail devices, and the semi-fixing devices are used for fixedly assembling a to-be-tested draw-bar box; a steel wire rope disc is driven by a servo motor at one end of each running guide rail device to rotate forwards and backwards to form a traction device to realize reciprocating motion of the box; a noise acquisition device is arranged at a position vertical to the upper part of the ground, and synchronously moves along with the draw-bar box; and four-wheel and two-wheel walking tests are carried out. According to the invention, two-wheel landing and four-wheel landing noise tests are carried out, so thatthe accuracy of the noise test of the draw-bar box is improved, the limitation brought by the conventional test mode is overcome, and improvement of the flexibility of the noise test operation of thedraw-bar box product by technicians is facilitated.

Description

technical field [0001] The invention relates to the technical field of noise testing, in particular to a method for testing the horizontal noise of a trolley case. Background technique [0002] For common human behaviors such as work, study, rest, and production, the generation of noise will have a greater impact on these behaviors. Therefore, reducing noise or avoiding unnecessary noise needs to be done by everyone. A good habit that needs to be maintained at all times. [0003] At the beginning of the design, the designers of the technical solution of the present invention need to understand the current situation of the relevant noise in advance, so as to provide the necessary basis for the implementation of the technical solution of the horizontal noise test of the trolley case of the present invention. There are many ways to generate noise, for example, vibration noise caused by rotating machinery, impact, resonance, and friction. For rotating machinery, it means that m...

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Problems solved by technology

[0007] However, the noise when the rollers are rotating is rarely detected. The noise of trolley bags often brings us great troubles in our lives, mainly because the walking noise of trolley bags has always been a prominent and often overlooked problem. A large number of trolley Noise is not considered in the design of luggage products, and the universal wheels will make harsh noises when in use. Therefore, controlling the noise of trolley luggage can effectively improve the user experience of the product, which is the future development direction of trolley luggage

[0008] At present, there is no perfect equipment and corresponding detection method for testing the walking noise of the trolley case, which is not conducive to the further improvement of the quality of the trolley case.

The research and development personnel of the technical solution of the present invention, after studying the usual way of testing the horizontal noise of the trolley case in the past, found that the traditional simple test method has relatively large limitations and cannot carry out targeted noise testing for the inherent field of trolley case products. The main factors are as follows:

[0009] ⑴The scope of the test is limited, and it is impossible to use the existing devices, scenes, and processes to conduct two-wheel landing and four-wheel landing tests at the same time, which makes it impossible to reflect whether the noise of the trolley case meets the standard in many ways;

[0010] (2) The configuration of the test road surface is unreasonable and lacks pertinence;

[0011] (3) The test accuracy of the conventional method is low, which cannot provide corresponding reference for the production of the product or whether it has reached the ex-factory standard;

[0012] (4) In this technical field, the previous method of relying only on technicians to use noise detection devices for manual detection is still used, and a set of systematic, complete and flexible testing solutions have not been formed

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