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A kind of sound insulation engine cover and sound insulation method

An engine hood and sound insulation technology, which is applied to engine components, machines/engines, earth movers/shovels, etc., can solve the problems of fixed sound insulation frequency, poor sound insulation effect, and leakage of reverberation noise in the power cabin. , to achieve the effect of reducing external working noise and environmental noise pollution

Active Publication Date: 2021-10-12
JIANGSU XCMG CONSTR MASCH RES INST LTD
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0003] Engine noise is the main noise source of construction machinery. The main working speed of the engine of different construction machinery products is different, and the engine speed of the same construction machinery product is also different under different working conditions, resulting in different peak frequencies of noise. At present, the engine hood commonly used in construction machinery It is a metal plate with ventilation holes. Usually there are many holes for heat dissipation, which causes a large amount of leakage of engine noise and reverberation noise in the power cabin. The sound insulation effect is poor and the sound insulation frequency is fixed.

Method used

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  • A kind of sound insulation engine cover and sound insulation method
  • A kind of sound insulation engine cover and sound insulation method
  • A kind of sound insulation engine cover and sound insulation method

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] like Figure 1-8 As shown, the present invention provides a soundproof engine cover, such as figure 1 As shown, it includes: an outer cover panel 1 , an inner panel 2 , a sound insulation body 3 , a first displacement adjustment device 5 and a second displacement adjustment device 6 , a first displacement sensor 7 , a second displacement sensor 8 and a controller 9 .

[0031] The sound insulation body 3 is arranged between the outer cover board 1 and t...

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Abstract

The invention discloses a sound-insulating engine cover, which comprises an outer cover plate, an inner plate and a sound-insulating body, and the sound-insulating body is arranged between the outer cover plate and the inner plate; the sound-insulating body is provided with several cavities, A sound insulation board is provided in the cavity, and inner air holes and outer air holes corresponding to the positions of the cavity are respectively provided on the outer cover plate and the inner plate. The invention can effectively isolate engine noise and reduce working noise of construction machinery.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery noise reduction, and in particular relates to a sound-insulating engine cover and a sound-insulating method. Background technique [0002] The skid steer loader, also known as a multi-functional engineering vehicle, is a construction machine that uses the difference in the linear speed of the wheels on both sides to achieve skid steering. The skid steer loader has a compact structure and flexible movements; it can quickly replace or mount various working devices on the job site to adapt to different working environments and job content; it is suitable for infrastructure construction, construction sites, workshops, warehouses, docks, On the deck of a ship or even in the cabin, where the space is narrow and the work content changes frequently. Its power cabin has a compact structure, high heat dissipation requirements of the engine during work, and high radiation noise; noise is the t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B62D25/10B62D25/12B60R13/08F02B77/13E02F9/08
CPCB60R13/0838B62D25/105B62D25/12E02F9/0866F02B77/13
Inventor 张达苏俊收汪三龙
Owner JIANGSU XCMG CONSTR MASCH RES INST LTD
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