CN205781721U - Bell housing - Google Patents

Abstract

The utility model discloses a flywheel housing, comprising: a flywheel housing body, a flywheel chamber and a gear chamber are arranged on the flywheel housing body, a side wall is shared between the flywheel chamber and the gear chamber, and the flywheel chamber An inclined-arc reinforced wall is connected between the top of the annular wall of the housing and the top of the annular wall of the gear chamber housing, and a reinforcing rib is provided on the side of the inclined-arc reinforced wall close to the gear chamber. The flywheel housing of the utility model changes part of the plane structure on the original flywheel housing body without changing the strength and stiffness of the flywheel housing, so as to reduce the weight of the flywheel housing and reduce the vibration and noise parameters of the flywheel housing.

Description

flywheel housing

technical field

The utility model relates to the technical field of engines, in particular to a flywheel housing.

Background technique

The flywheel housing is a part used to cover the flywheel on the engine. It is installed between the engine and the gearbox, externally connected to the crankcase, starter, and oil pan, and has a built-in flywheel assembly, which plays the role of connecting the body, protection and carrier.

The existing engine flywheel housing needs to design drainage grooves. The drainage grooves pass through the backbone ribs connecting the bolts passing through the nail holes on the flywheel housing, and cut off the main ribs. The flywheel housing bolts passing through the nail holes are the places where the flywheel housing is most stressed. The cut off of the main rib seriously affected the strength of the flywheel housing. In addition, the flywheel shell of the existing diesel engine has a large plane structure, which affects the stiffness of the flywheel shell. In order to ensure the rigidity of the plane structure, it is necessary to increase the thickness of the plane structure, resulting in most of the flywheel shell wall thickness. It is thicker, although it can meet the requirements of use, but the weight is too large, which does not meet the trend of lightweight engines.

Contents of the invention

The technical problem to be solved by the utility model is to provide a flywheel housing with high strength and low weight.

For solving the problems of the technologies described above, the technical solution of the utility model is:

The flywheel housing includes: a flywheel housing body, on which a flywheel chamber and a gear chamber are arranged, and a side wall is shared between the flywheel chamber and the gear chamber; the ring wall top of the flywheel chamber housing is connected to the The top of the ring wall of the gear chamber shell is connected with an inclined arc reinforced wall, and the side of the inclined arc reinforced wall close to the gear chamber is provided with a reinforcing rib.

Preferably, the casing of the flywheel chamber is provided with an inclined-plane reinforcing wall between the place where the bolt passes through the nail hole and the side wall, and reinforcing ribs are respectively provided on the sides of the inclined-plane reinforcing wall.

Preferably, the housing of the flywheel chamber is provided with a starter installation hole, the housing of the flywheel chamber is provided with a pit corresponding to the starter installation hole, and the sides of the bottom wall of the pit are respectively provided with There are ribs.

Preferably, the flywheel housing is provided with an engine support leg, and a reinforcing rib is connected between the engine support leg and the ring wall of the flywheel chamber casing.

Preferably, the side wall is a wavy side wall, and reinforcing ribs are respectively provided on the side surfaces of both sides of the side wall.

Preferably, the flywheel housing body is a cast aluminum flywheel housing body.

After adopting above-mentioned technical scheme, the beneficial effect of the utility model is:

Since the top of the ring wall of the flywheel chamber casing and the top of the ring wall of the gear chamber casing are connected with an inclined arc surface reinforcing wall, the side of the inclined arc surface reinforcing wall close to the side of the gear chamber is provided with a reinforcing rib; the inclined arc surface reinforcement The wall replaces the original planar structure, reduces the weight of the flywheel housing, enhances the connection strength between the ring wall of the flywheel chamber and the top of the ring wall of the gear chamber casing, and strengthens the rigidity and strength of the flywheel housing.

Since the shell of the flywheel chamber is located between the bolt hole and the side wall, there is an inclined reinforcing wall, and the sides on both sides of the inclined reinforcing wall are respectively provided with reinforcing ribs; the inclined reinforcing wall replaces the original plane structure, reducing the flywheel The weight of the shell strengthens the strength of the bolt passing through the nail hole, and strengthens the connection strength between the side wall and the flywheel shell.

Since the starter mounting hole is provided on the shell of the flywheel chamber, pits are provided on the shell of the flywheel chamber corresponding to the starter mounting holes, and reinforcing ribs are respectively provided on both sides of the bottom wall of the pit; the pits reduce the size of the flywheel chamber. The thickness of the bottom not only reduces the weight of the flywheel housing, but also strengthens the strength of the flywheel housing where the bolts pass through the nail holes and the strength of the starter installation hole.

Description of drawings

Fig. 1 is the front structural schematic view of the embodiment of the flywheel housing of the present utility model;

Fig. 2 is a rear view schematic diagram of Fig. 1;

Fig. 3 is a schematic sectional view along line A-A in Fig. 1;

Fig. 4 is a schematic sectional view along line B-B in Fig. 2;

Fig. 5 is a schematic cross-sectional view along line C-C in Fig. 5;

Fig. 6 is a schematic left view of Fig. 1;

Fig. 7 is a three-dimensional structural schematic diagram of an embodiment of the flywheel housing of the present invention;

In the figure: 1-flywheel housing body; 11-flywheel chamber, 111-rear end face; 12-gear chamber; 121-front end face; 13-side wall; 14-reinforcing wall of oblique arc surface; 141-reinforcing rib of oblique arc surface; 15-dimple; 151-reinforcing rib of front dimple; 152-reinforcing rib of rear dimple; 162-rear bevel reinforcement; 17-starter installation hole; 18-bolt through nail hole; 19-engine leg; 191-leg reinforcement.

detailed description

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

As shown in Figure 1, a flywheel housing includes: a flywheel housing body 1, a flywheel chamber 11 is provided on the flywheel housing body 1, the side where the flywheel chamber 11 is located is defined as the rear side, and the flywheel chamber 11 is connected to the gearbox housing The end face of is rear end face 111, and the front side of flywheel housing body 1 is provided with gear chamber 12, and the end face that gear chamber 12 is connected with engine body is front end face 121, shares a sidewall 13 between flywheel chamber 11 and gear chamber 12. The flywheel housing body 1 is also provided with a starter installation hole 17 for starter installation and a flywheel housing engine support leg 19 .

As shown in Fig. 1, Fig. 2 and Fig. 3 together, the top of the ring wall of the flywheel chamber 12 is connected with the top of the ring wall of the gear chamber 11 to be provided with an inclined arc reinforced wall 14, and the front side of the inclined arc reinforced wall 14 is provided with There are three obliquely curved reinforcing ribs 141 distributed radially. The oblique arc surface reinforcement wall 14 replaces the original planar structure, strengthens the connection strength between the top of the ring wall of the flywheel chamber 11 and the top of the ring wall of the gear chamber 12, and strengthens the rigidity and strength of the flywheel housing 1; in addition, the oblique The arc-shaped reinforcing wall 14 will not store water, and there is no need to design drainage grooves in the flywheel housing body 1, which avoids the weakening of the drainage grooves to the flywheel housing body 1.

As shown in Fig. 1, Fig. 2 and Fig. 4 together, the housing of the flywheel chamber 12 is located at the bolt-passing hole 18 and is provided with an inclined-plane reinforcing wall 16, and one end of the inclined-plane reinforcing wall 16 extends to the bolt-passing hole 18 close to it, The other end is connected with the side wall 13, and both sides of the inclined plane reinforcing wall 16 are provided with inclined plane reinforcing ribs to strengthen the shell of the gear chamber 12 and the strength of the bolts passing through the nail holes 18 and the rigidity of the flywheel housing body 1. , reducing the weight brought by the planar structure. The inclined reinforcement ribs are respectively a front inclined reinforcement rib 161 and a rear inclined reinforcement rib 162, the front inclined reinforcement rib 161 is two intersecting reinforcement ribs, and the rear inclined reinforcement rib 162 is grid-shaped.

As shown in Fig. 1, Fig. 2 and Fig. 4, the shell of the flywheel chamber 11 is provided with a starter mounting hole 17, corresponding to the starter mounting hole 17 is provided with a forward concave pit 15, the bottom wall of the pit 15 is in contact with the The position of the starter mounting hole 17 is corresponding, the edge of the pit 15 extends to the bolt hole 18 close to the pit 15, the two sides of the bottom wall of the pit 15 are provided with pit reinforcing ribs, Respectively, the front pit reinforcing rib 151 and the rear pit reinforcing rib 152, the front pit reinforcing rib 151 is a plurality of mutually spaced reinforcing ribs, and the rear pit reinforcing rib 152 is two intersecting reinforcing ribs.

Compared with the original flat plate structure, the pit 15 can reduce the weight of the flywheel housing body 1, increase the depth and strength of the bolt passing through the nail hole 18, and at the same time, the bottom of the pit 15 is close to the starter installation hole 17 , the connection depth between the bolt passing through the starter installation hole 17 and the flywheel housing body 1 can be increased, so as to enhance the installation reliability of the starter and the strength of the starter installation hole 17 .

As shown in FIG. 5 , the side wall 13 is wave-shaped, and the front and rear sides of the side wall 13 are provided with reinforcing ribs. The wave-shaped structure can strengthen the rigidity of the side wall 13 without increasing the weight. As shown in Fig. 1, Fig. 5 and Fig. 7 together, the front and rear sides of side wall 13 are provided with side wall reinforcing ribs, are respectively front side wall reinforcing ribs 131 and rear side wall reinforcing ribs 132, and front side wall reinforcing ribs 131 There are two reinforcing ribs extending downward to the middle, and the rear side wall reinforcing ribs 132 are three parallel vertical reinforcing ribs.

As shown in Fig. 6 and Fig. 7 together, the lower part of the flywheel housing body 1 is also provided with an engine support leg 19, and a support leg reinforcement 191 is provided on the side of the engine support leg 19 to strengthen the engine support leg 19 and the shell of the flywheel chamber 11. The connection between the ring walls strengthens the strength of the engine support leg 19.

The flywheel shell of the utility model is made of cast aluminum to reduce the weight of the flywheel shell. The flywheel chamber 11 and the gear chamber 12 are integrated, which simplifies the structure of the engine and utilizes the layout of the diesel engine.

To sum up, the flywheel housing of the present invention changes part of the planar structure on the original flywheel housing body without changing the strength and stiffness of the flywheel housing, so as to reduce the weight of the flywheel housing and reduce the vibration and noise parameters of the flywheel housing.

The above descriptions are examples of the best implementation modes of the present utility model, and the parts not mentioned in detail are the common knowledge of those skilled in the art. The protection scope of the present utility model is based on the content of the claims, and any equivalent transformation based on the technical inspiration of the present utility model is also within the protection scope of the present utility model.

Claims (6)

1. Flywheel housing, comprising: a flywheel housing body, the flywheel housing body is provided with a flywheel chamber and a gear chamber, and a side wall is shared between the flywheel chamber and the gear chamber; it is characterized in that, An inclined arc reinforced wall is connected between the top of the ring wall of the flywheel housing and the top of the ring wall of the gear chamber, and the side of the inclined arc reinforced wall close to the gear chamber is provided with a Ribs. 2. The flywheel housing according to claim 1, characterized in that, on the housing of the flywheel chamber, an inclined-plane reinforcing wall is provided between the place where the bolt passes through the nail hole and the side wall, and the sides of the inclined-plane reinforcing wall Reinforcing ribs are respectively provided on the sides. 3. The flywheel housing according to claim 1, wherein a starter mounting hole is provided on the shell of the flywheel chamber, and a pit is provided on the shell of the flywheel chamber corresponding to the starter mounting hole, Reinforcing ribs are respectively provided on the side surfaces of both sides of the bottom wall of the pit. 4 . The flywheel housing according to claim 1 , wherein an engine leg is provided on the flywheel housing, and a reinforcing rib is connected between the engine leg and the ring wall of the flywheel chamber shell. 5 . The flywheel housing according to claim 1 , wherein the side wall is a corrugated side wall, and reinforcing ribs are respectively provided on the sides of the side wall. 6 . 6 . The flywheel housing according to any one of claims 1 to 5 , wherein the flywheel housing body is a cast aluminum flywheel housing body.