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Engineering machinery and noise reduction method and device thereof

A technology for construction machinery and noise reduction, applied in the direction of sound-producing equipment, instruments, etc., can solve the problem of difficulty in obtaining better noise reduction effect, and achieve the effect of reducing material cost, reducing use noise, and improving noise reduction effect.

Active Publication Date: 2021-02-02
SANY HEAVY MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This noise reduction method is mainly concentrated in the low-frequency noise band, but it is difficult to achieve a good noise reduction effect on the high-frequency band structure noise caused by vibration.

Method used

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  • Engineering machinery and noise reduction method and device thereof
  • Engineering machinery and noise reduction method and device thereof
  • Engineering machinery and noise reduction method and device thereof

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Embodiment Construction

[0051] In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0052] see figure 1, the embodiment of the present invention provides a construction machine 100, the construction machine 100 can be an excavator, etc.; The noise reduction device 110 for construction machinery includes at least one software function module that can be stored in the controller 120 in the form of software or firmware (firmware) or solidified in an operating system (operating system, OS) of a server. The controller 120 is used to execute executable modules stored therein, such as software function modules and computer programs included in the noise reduction device 110 for construction machinery. During execution, the controller 120 can control the actuator 130 electrically connected thereto, and control the output paramet...

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Abstract

The embodiment of the invention provides engineering machinery and a noise reduction method and device thereof, and relates to the field of engineering machinery. The noise reduction method comprisesthe following steps: acquiring a current vibration signal of the engineering machinery; obtaining a vibration noise empirical curve of the engineering machinery, the vibration noise empirical curve being a curve representing a corresponding relationship between vibration and noise of the engineering machinery; obtaining a current noise wave of the engineering machinery according to the current vibration signal and the vibration noise empirical curve; and controlling an executing mechanism to send out a current counteracting wave corresponding to the current noise wave, the amplitude of the current counteracting wave being equal to that of the current noise wave, and the phase difference being 180 degrees. According to the embodiment of the invention, the noise reduction effect can be improved and the use of sound insulation materials can be improved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to an engineering machinery and a noise reduction method and device thereof. Background technique [0002] At present, the mechanized operation of engineering construction projects at home and abroad has been vigorously developed, and various construction machinery has been continuously applied to various construction fields. While improving labor efficiency, it also brings noise pollution, which endangers the physical and mental health of personnel within the scope of mechanical operations. [0003] Commonly used noise reduction methods are mainly aimed at aerodynamic noise, using sound-absorbing materials, adding dead pipes and other methods. This noise reduction method is mainly concentrated in the low-frequency noise band, but it is difficult to achieve a good noise reduction effect on the high-frequency band structure noise caused by vibration. Contents of the invention ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/178
CPCG10K11/1781G10K11/1785G10K11/1787Y02T90/00
Inventor 王碧涛孟凡冉刘芳
Owner SANY HEAVY MACHINERY