CN202327018U

CN202327018U - Noise reduction device for speed changing box of passenger car

Info

Publication number: CN202327018U
Application number: CN2011204386436U
Authority: CN
Inventors: 季岗; 高尚流; 张建华
Original assignee: Nanjing Golden Dragon Bus Co Ltd
Current assignee: Nanjing Golden Dragon Bus Co Ltd
Priority date: 2011-11-08
Filing date: 2011-11-08
Publication date: 2012-07-11
Anticipated expiration: 2021-11-08

Abstract

The utility model discloses a noise reduction device for a speed changing box of a passenger car. The noise reduction device is arranged above the speed changing box and comprises a bracket arranged above the speed changing box and a sound-proof housing arranged above the bracket. The noise reduction device shields an exposed high-pressure air pipe and an exposed shift sensor, so the damage to the exposed high-pressure air pipe and the exposed shift sensor in the production and assembly processes is prevented, and the noise generated by the speed changing box is effectively lowered due to the design of a sound-proof layer. The noise reduction device has a simple structure, is low in cost and can be widely applied to the speed changing box of the passenger car.

Description

A kind of passenger vehicle gearbox noise reduction device

Technical field

The utility model relates to a kind of car accessories, relates in particular to a kind of passenger vehicle gearbox noise reduction device.

Background technique

At present; Electronic city bus adopts automatic gear shifting control system of motor; Motor and the integrated design of automatic mechanical transmission AMT modularization; The motor shaft of AC induction motor (being output shaft) is same axle with the input shaft of gear transmission, and the electric machine casing of motor output end directly is fixedly connected with the speed changer body of gear transmission, becomes the integral body of compact structure.But also there is following problem in existing speed changer: high-pressure air pipe is exposed to be installed in gearbox top, bump injury or flattening easily in the vehicle production assembly process; And produce comfort of passenger in the influence of noise car in the vehicle road examination debug process.

The model utility content

Goal of the invention: the purpose of the utility model provides a kind of passenger vehicle gearbox noise reduction device, is used to wrap up the exposed high-pressure air pipe on gearbox top and reduce the gearbox noise.

Technological scheme: for realizing above-mentioned purpose, a kind of passenger vehicle gearbox noise reduction device of the utility model is installed on the gearbox top, comprises support that is installed on the gearbox top and the sound insulation case of being located at the support top.

Because high-pressure air pipe and gear inductor expose above gearbox, sustain damage easily, so the sound insulation case form multi-faceted protection above high-pressure air pipe and gear inductor.Specifically, said sound insulation case is installed in the top of gearbox gear inductor and high-pressure air pipe.

Further, said sound insulation case comprises the flank that extends to the gearbox both sides; Said sound insulation case comprises the front screen that blocks the high-pressure air pipe front end.

Have the hole on the said sound insulation case, make things convenient for high-pressure air pipe from the hole, to stretch.

Said sound insulation case internal surface is provided with the puigging that Sound-proof material is processed.Specifically, said sound insulation case is the sound insulation case that galvanized steel plain sheet is processed, and is pasted with the puigging that Sound-proof material is processed at sound insulation case internal surface, and said puigging is fixed with the punching aluminium web plate gland and the rivet of riveting over.

Beneficial effect: a kind of passenger vehicle gearbox noise reduction device of the utility model covers exposed high-pressure air pipe and gear inductor, prevents in production, assembly process, to sustain damage, and puigging design simultaneously effectively reduces the noise that gearbox produces.The utility model is simple in structure, and is with low cost, can be widely used on the passenger vehicle gearbox.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the left view of Fig. 1;

Fig. 3 is the plan view of Fig. 1.

Embodiment

Below in conjunction with accompanying drawing the utility model is done explanation further.

With reference to figure 1, Fig. 2, shown in Figure 3, a kind of passenger vehicle gearbox noise reduction device of the utility model is equipped with " Z " type support 2 on gearbox 1, support 2 through screw on gearbox 1.Sound insulation case 3 is installed on the support 2, and sound insulation case 3 front ends are provided with front screen 4, are extended with flank 5 to gearbox 1 both sides, form the hemi-closure space of parcel high-pressure air pipe 6 and gear inductor 7.The sound insulation case that sound insulation case 3 is processed for galvanized steel plain sheet is pasted with the puigging that Sound-proof material is processed at sound insulation case 3 internal surfaces, and puigging is fixed with the punching aluminium web plate gland and the rivet of riveting over.

The above only is the preferred implementation of the utility model; Be noted that for those skilled in the art; Under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.

Claims

1. passenger vehicle gearbox noise reduction device is characterized in that: this device is installed on the gearbox top, comprises support that is installed on the gearbox top and the sound insulation case of being located at the support top.

2. a kind of passenger vehicle gearbox noise reduction device according to claim 1, it is characterized in that: said sound insulation case is installed in the top of gearbox gear inductor and high-pressure air pipe.

3. a kind of passenger vehicle gearbox noise reduction device according to claim 1 is characterized in that: said sound insulation case comprises the flank that extends to the gearbox both sides; Said sound insulation case comprises the front screen that blocks the high-pressure air pipe front end.

4. according to any described a kind of passenger vehicle gearbox noise reduction device in the claim 1 ~ 3, it is characterized in that: said sound insulation case internal surface is provided with the puigging that Sound-proof material is processed.