CN217634605U

CN217634605U - Lightweight noise reduction type flywheel housing

Info

Publication number: CN217634605U
Application number: CN202221082407.XU
Authority: CN
Inventors: 张棋; 陈永; 徐远志; 杨振东
Original assignee: Kunming Yunnei Power Co Ltd
Current assignee: Kunming Yunnei Power Co Ltd
Priority date: 2022-05-08
Filing date: 2022-05-08
Publication date: 2022-10-21
Anticipated expiration: 2032-05-08

Abstract

The utility model discloses a lightweight noise reduction type flywheel shell, the left end of the lightweight noise reduction type flywheel shell is provided with a starter mounting hole, the middle of the lightweight noise reduction type flywheel shell is provided with a crankshaft and a crankshaft oil seal mounting hole, and the arrangement of engine parts is reasonably optimized; structural in appearance, the novel lightweight formula of making an uproar flywheel shell's that falls surface has increased many strengthening ribs, has effectively improved the intensity at certain weak position of intensity ratio of flywheel shell, has guaranteed holistic structural strength, and the use of strengthening rib makes the wall thickness of flywheel shell thinner simultaneously, increases at the position that thickness is big and subtracts the heavy groove, has avoided appearing manufacturing defects in the time of making, has alleviateed weight simultaneously, can guarantee structural strength moreover, and the reliability is better.

Description

Lightweight noise reduction type flywheel housing

Technical Field

The utility model relates to an engine accessories field relates to a formula of making an uproar bell housing falls in lightweight particularly.

Background

The flywheel housing is one of main accessories of the engine, is a main working cavity of an engine gear and a flywheel, plays roles of protecting, damping and reducing noise of a gear transmission system of the engine, and is also a main carrier for connecting the gearbox body and the engine, so that the requirements on functionality, strength and the like of the flywheel housing are high. With the trend of light weight of diesel engines, the flywheel housing also needs to be designed in a light weight structure while ensuring enough strength; due to the trend of the compactness of the diesel engine, the functionality and the universality of the flywheel shell are further enhanced, when the function of protecting the transmission of the rear-end gear is met, the arrangement and installation functions of external hanging parts such as a starter are also met, the same flywheel shell is also required to be matched with starters of different models, a common method is to reserve an installation hole and reserve a threaded hole drilling area, and the connection matching of starters of different models in a certain range is adapted by controlling the diameter of the threaded hole.

The traditional flywheel housing is made of cast iron materials, and the body is heavy, so that the online assembly of the engine is not facilitated, and the overall weight of the engine is increased; the traditional cast iron flywheel housing has high casting and processing cost, and easily generates manufacturing defects at a thick part, so that the integral strength of the flywheel housing cannot meet the use requirement; the traditional cast iron flywheel shell has high requirements on a machining tool in machining, and the machining cost of the flywheel shell is increased. Therefore, traditional cast iron flywheel shell can't satisfy modern enterprise's production demand, and novel lightweight cast aluminium flywheel shell light in weight, casting and processing cost are low, avoid casting the defect through reducing the wall thickness, increase strengthening rib reinforcing strength, and novel lightweight flywheel shell has become mainstream product.

Disclosure of Invention

An object of the utility model is to the not enough that exists among the above-mentioned prior art, provide a novel formula flywheel housing of making an uproar falls in lightweight that structural reliability is good, intensity is high, light in weight, with low costs.

Utility model lightweight flywheel housing's technical scheme: a lightweight noise reduction type flywheel casing comprises a flywheel casing body, wherein the flywheel casing body comprises a middle part, a right part and a left part, a starter mounting hole is formed in the left part, and a crankshaft, a crankshaft oil seal mounting hole, a flywheel casing positioning pin hole and a flywheel casing mounting hole are formed in the middle part; and the right part is provided with a mounting joint surface of the flywheel shell with a sealing chute and the machine body.

Preferably, the flywheel housing body is provided with and encircles chimb all around, the chimb sets up and is connected one side at flywheel housing body and gearbox, the chimb is a ring shape, and the excircle diameter is 460mm, and thickness is 52mm, is provided with a plurality of that is used for lightening body weight on the chimb and subtracts heavy pit and gearbox installation screw.

Preferably, the rear end face of the flywheel housing body is provided with a plurality of gearbox body mounting screw holes and a spigot of the gearbox body, and the spigot of the gearbox body is arranged on the inner side of the convex edge.

Preferably, the thickness of the gearbox body mounting screw hole and the spigot end of the gearbox body is larger than that of the middle part.

Preferably, reinforcing ribs are arranged at the position of 6mm of the wall thickness of the inner cavity of the flywheel shell and around the starter mounting hole.

Preferably, the thickness of the reinforcing rib is 6mm, and the height of the reinforcing rib is flexibly changed along with the relative positions of surrounding parts.

Preferably, the flywheel housing body material uses A380, the material adopts a large number of composite materials, innovative GLARE glass fiber is used in development to increase aluminum materials, and compared with the traditional aluminum materials, the material is low in weight, high in strength, good in fatigue resistance, free of special processing technology and greatly improved in service life. The flywheel housing body utilizes the characteristics of the material, the wall thickness can be set to be about 6mm in design, the thickness can meet the use requirement under the action of the reinforcing ribs, and meanwhile, the weight of the flywheel housing body is reduced.

The beneficial effects of the utility model are that:

1. the left end of this formula of making an uproar flywheel housing falls in lightweight is equipped with the starter mounting hole, and the centre is equipped with bent axle and bent axle oil blanket mounting hole, has rationally optimized the arranging of engine spare part.

2. Externally structurally, the surface of the novel lightweight noise reduction type flywheel housing is increased with a plurality of reinforcing ribs, the strength of certain weak parts of the strength of the flywheel housing is effectively improved, the integral structural strength is ensured, the wall thickness of the flywheel housing is thinner by using the reinforcing ribs, the weight reduction grooves are increased at the parts with large thickness, the manufacturing defects are avoided, the weight is reduced, the structural strength can be ensured, and the reliability is better.

3. Compared with the traditional structure, the flywheel housing has the advantages that the periphery surrounding convex edge is arranged, and the weight of the flywheel housing can be reduced by arranging the lightening pits on the convex edge.

4. Through installing spare parts integration such as starter on the bell housing, can realize that bell housing integrates the installation with other relevant spare parts, simple structure is reasonable, and is pleasing to the eye compact.

5. The lightweight flywheel housing is changed into A380 through a reinforcing rib, a lightening groove structure and materials, so that the weight of the lightweight flywheel housing is reduced by 65%, and the cost is greatly reduced.

Drawings

Fig. 1 is a front view of the present invention.

Fig. 2 is a rear view of the present invention.

In the figure: 1. the engine comprises a middle part, 2, a mounting joint surface of a flywheel housing with a sealing inclined groove and an engine body, 3, a left part, 4, a starter mounting hole, 5, a crankshaft and crankshaft oil seal mounting hole, 6, a flywheel housing positioning pin hole, 7, a flywheel housing mounting bolt through hole, 8, a weight reduction pit, 9, a gearbox body mounting screw hole, 10, a flywheel housing spigot, 11, a reinforcing rib and 12, and a convex edge.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.

As shown in fig. 1-2, a novel lightweight noise reduction type flywheel housing comprises a flywheel housing body; the flywheel housing body comprises a middle part 1, a mounting joint surface 2 of the flywheel housing with a sealing inclined groove and the engine body and a left part 3; a starter mounting hole 4 is formed in the left part 3; the middle part 1 is provided with a crankshaft and crankshaft oil seal mounting hole 5, a flywheel housing positioning pin hole 6 and a flywheel housing mounting hole 7; the whole flywheel housing body is provided with a convex edge 12 surrounding the periphery, and the convex edge 12 is provided with a plurality of weight-reducing pits 8 for reducing the weight of the body; the rear end face of the flywheel housing body is provided with a plurality of gearbox body mounting screw holes 9 and flywheel housing seam allowances 10; the thin wall portion is provided with a reinforcing rib 11. Under the condition of ensuring the structural strength, all structural layouts are compact as much as possible, and the whole flywheel shell body can also meet the strength requirement.

Specifically, the rear end face of the flywheel housing body is provided with a plurality of gearbox body mounting screw holes 9 and flywheel housing rabbets 10 for mounting a gearbox; the middle part 1 of the flywheel shell body is attached to the engine body and is provided with a plurality of bolt through holes 7, two positioning pin holes 6 and a crankshaft and crankshaft oil seal mounting hole 5; a starter mounting hole 4 is formed in the left part of the flywheel housing body; a plurality of weight-reducing pits 8 for reducing the weight of the flywheel housing body are arranged outside the flywheel housing body; the thin portion of gear room body wall and mounting hole are equipped with strengthening rib 11 around, and the muscle height is 6mm, and the muscle width can carry out nimble change according to the relative position of other spare parts.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A lightweight noise reduction type flywheel housing comprises a flywheel housing body and is characterized in that the flywheel housing body comprises a middle part (1), a right part and a left part (3), a starter mounting hole (4) is formed in the left part (3), and a crankshaft and crankshaft oil seal mounting hole (5), a flywheel housing positioning pin hole (6) and a flywheel housing mounting hole (7) are formed in the middle part (1); and the right part is provided with a mounting joint surface (2) of the flywheel housing with a sealing chute and the machine body.

2. The flywheel housing with the noise reduction function in the light weight as claimed in claim 1, wherein the flywheel housing body is provided with a convex edge (12) around the periphery, the convex edge (12) is arranged on the side where the flywheel housing body is connected with the gearbox body, the convex edge (12) is in a ring shape, the diameter of the outer circle is 460mm, the thickness is 52mm, and a plurality of weight reduction pits (8) and gearbox body installation screw holes (9) for reducing the weight of the flywheel housing body are arranged on the convex edge (12).

3. The flywheel housing with the noise reduction function in light weight as claimed in claim 2, wherein the rear end face of the flywheel housing body is further provided with a spigot (10) of the gearbox body, and the spigot (10) of the gearbox body is arranged inside the flange (12).

4. The flywheel housing of a kind of noise reduction of lightweight according to claim 3, characterized by, the thickness of the said gearbox body mounting screw hole (9) and spigot (10) end of the gearbox body is greater than the middle part (1).

5. The flywheel housing with the noise reduction function in the light weight as claimed in claim 1 is characterized in that reinforcing ribs (11) are arranged at the position where the wall thickness of the inner cavity of the flywheel housing is 6mm and around the starter mounting hole (4).

6. The flywheel housing of claim 5 with reduced noise and weight, characterized in that the thickness of the reinforcing ribs (11) is 6mm.

7. The flywheel housing of any of claims 1 to 6, wherein A380 is used as the material of the flywheel housing body.