A power cabin air duct structure of an engineering vehicle, a power cabin and an engineering vehicle

Abstract

The invention relates to an air duct structure of an engine compartment of a construction vehicle, the engine compartment and the construction vehicle. The air duct structure of the engine compartment of the construction vehicle comprises air inlets, air outlets and air ducts, wherein the air inlets and the air outlets are formed in the engine compartment; the air ducts are positioned between the air inlets and the air outlets; each of the air ducts is provided with one or more chambers which are substantially closed, and orifices are formed in one or more side surfaces of the chambers, so that noise generated by associated components in the engine compartment can be absorbed by the chambers, and one or more side surface with the orifices can prevent air currents in the air ducts from entering the chambers. According to the air duct structure, the engine compartment and the industrial vehicle disclosed by the invention, the chambers with the orifices are arranged in the air ducts, so that the noises generated by the associated components in the engine compartment can be absorbed, and overboard noise of the engine compartment can be effectively reduced. In addition, the side surfaces with the orifices can prevent eddy currents form being generated in the engine compartments, so that the wind resistance of air current fields in the air ducts is reduced, and the air current fields in the engine compartments are optimized.

Description

Technical field [0001] The invention relates to the technical field of engineering machinery, in particular to a power cabin air duct structure of an engineering vehicle, a power cabin and an engineering vehicle. Background technique [0002] Economic development and environmental protection have become important issues on a global scale. Countries around the world have formulated and promulgated laws and regulations to protect the environment and control pollution. Noise is the third largest source of pollution after water and air pollution. Among all kinds of noise pollution, construction noise ranks first, and construction noise is produced by the large amount of construction machinery. Research on vibration and noise reduction of construction machinery products is an important link in advocating green environmental protection and building a harmonious society. Foreign construction machinery companies continue to conduct in-depth research on vibration and noise, leading the d...

AI Technical Summary

Problems solved by technology

[0005] Although the existing technology can achieve the function of diverting air well, the air duct design of the power cabin is too simple, the noise can be radiated directly through the air inlet and outlet, and the internal sound-absorbing materials cannot exert the best effect, and the interior lacks effective elimination. The sound structure makes the sound insulation and noise reduction effect of the engine cover poor. There is no drainage measure inside the power compartment, and the vortex is easy to form inside, thereby increasing the wind resistance, and the hot air near the engine will be sucked into the radiator by the fan, reducing the heat dissipation of the cooling system. Effect

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