Movable shutter with sound absorption function

Abstract

The invention discloses a movable shutter with a sound absorption function. The movable shutter comprises a fixed frame, a plurality of blades hinged into the fixed frame, a movable frame arranged in the fixed frame and blade connecting rods respectively hinged with the blades and the movable frame, and each blade comprises a blade shell and a sound absorption material arranged in the blade shell. The movable shutter has the beneficial effects that the sound absorption materials are arranged in the blades, so that the blades have a sound absorption function, noise transmitted from the interior of a locomotive to the outside can be reduced, and noise pollution to the environment outside the locomotive is reduced.

Description

technical field

[0001] The invention relates to the technical field of shutters, in particular to a movable shutter with a sound-absorbing function. Background technique

[0002] At present, the movable shutters used on diesel locomotives can only realize the opening and closing function of the side wall ventilation channel, which is far from the actual function of the locomotive. The problems existing in the traditional shutters are: 1. The ventilation air volume of the side wall shutters Appropriate adjustments should be made according to changes in the environment and climate. For example, the cooling and ventilation air volume requirements for locomotives are the largest when they are running in summer, and the cooling and ventilation air volume requirements are relatively small when running in winter. However, the movable shutter blades used by locomotives currently have no adjustment function; The blades of most movable shutters are designed as aluminum alloy extruded ...

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