CN201897042U

CN201897042U - Noise-reducing reinforced engine flywheel shell

Info

Publication number: CN201897042U
Application number: CN2010206334357U
Authority: CN
Inventors: 牛爱武; 肖婵; 马艳; 曹军庆
Original assignee: Tianjin Lovol Engines Co Ltd
Current assignee: Tianjin Lovol Engines Co Ltd
Priority date: 2010-11-30
Filing date: 2010-11-30
Publication date: 2011-07-13
Anticipated expiration: 2020-11-30

Abstract

The utility model relates to a noise-reducing reinforced engine flywheel shell. The flywheel shell is provided with a bottom plate and side walls which are connected with the rear end surface of an engine; the surfaces of the bottom plate and the side walls of the flywheel shell are provided with reinforcing ribs. In the flywheel shell, a structure that the reinforcing ribs are arranged on the surfaces of the bottom plate and the side walls is adopted, so that not only is the strength of the flywheel shell is increased, the weight of the flywheel shell is reduced, but also the noise in a speed changing box can be absorbed; since the bottom plate of the engine flywheel shell adopts a curved surface structure, the noise of the engine is further reduced; and since the combined structure of the reinforcing ribs and the curved surface is adopted, the noise of the engine is reduced effectively, and can be reduced by about 4dB at a calibrated rotating speed, the vibration absorbing effect is good, the strength of parts is increased and the weight of the engine is reduced.

Description

The reinforced flywheel shell of engine of a kind of noise reduction

Technical field

The utility model relates to a kind of flywheel shell of engine, the reinforced flywheel shell of engine of particularly a kind of noise reduction.

Background technique

Flywheel shell of engine connects motor and car load gearbox, realizes the support of motor and the transmission of power.Flywheel casing bears the vibration of great distortion power and motor; Simultaneously, gearbox internal clutch and associated gear high speed rotating produce bigger noise.Traditional flywheel shell of engine is simple in structure, and the face and the side that are connected with motor do not have stiffening rib, and part strength is poor, and is fragile; And flywheel casing and motor junction surface are the plane, have greatly increased the noise source of motor.

The general noise that reduces motor all is to wait and realize by raising element precision, increase sound arrester, increase beam; The measure that improves flywheel casing intensity is to increase wall thickness.But improve the cost that element precision can increase motor, increase the part that sound arrester and beam can increase motor, and because the restriction in space is difficult for realization; Increase thickness and can increase pts wt, waste material.

Summary of the invention

The utility model provides a kind of noise reduction reinforced flywheel shell of engine for solving the technical problem that exists in the known technology.

The technological scheme that the utility model is taked for the technical problem that exists in the solution known technology is: the reinforced flywheel shell of engine of a kind of noise reduction, this flywheel casing is provided with base plate and the sidewall that is connected with the motor ear end face, and the backplate surface and the sidewall surfaces of described flywheel casing are provided with stiffening rib.

The utility model can also adopt following technological scheme:

The base plate of described flywheel casing is the curved surface base plate.

Advantage and the good effect that the utlity model has are: adopt the structure that stiffening rib is set on backplate surface and sidewall surfaces, not only increased the intensity of flywheel casing, reduced the weight of flywheel casing, can also absorb the noise in the gearbox; The flywheel shell of engine base plate has further reduced the noise of motor owing to adopt curved-surface structure; Stiffening rib and curved surface structure combining have reduced the noise of motor effectively, but the about 4dB of noise reduction under the rated engine speed has the favorable damping effect, has increased the intensity of part, and has reduced the weight of motor.

Description of drawings

Fig. 1 is a plan view of the present utility model;

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

Fig. 3 is the A-A sectional view of Fig. 1.

Among the figure: 1, base plate, 2, sidewall, 3, stiffening rib.

Embodiment

For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:

See also Fig. 1～Fig. 3, the reinforced flywheel shell of engine of a kind of noise reduction, this flywheel casing are provided with base plate 1 and the sidewall 2 that is connected with the motor ear end face, and the backplate surface of flywheel casing and sidewall surfaces are provided with stiffening rib 3, and the base plate 1 of flywheel casing is a curved surface base plate 1.

The utility model is optimal design on original part, adopts stiffening rib and curved surface structure combining form, avoids the design of single plane, has not only increased the intensity of flywheel casing greatly, reduces the engine luggine noise source, can also absorb the noise in the gearbox.Promptly do not increase part, can beautify motor again, also can reduce the weight of motor.

Claims

1. reinforced flywheel shell of engine of noise reduction, this flywheel casing is provided with base plate and the sidewall that is connected with the motor ear end face, it is characterized in that, and the backplate surface and the sidewall surfaces of described flywheel casing are provided with stiffening rib.

2. the reinforced flywheel shell of engine of noise reduction according to claim 1 is characterized in that the base plate of described flywheel casing is the curved surface base plate.