CN211288672U - Novel engine balance shaft assembly - Google Patents

Abstract

The utility model provides a novel engine balance axle assembly, includes balance axle (11) and axle sleeve (12) and antifriction bearing (13), wherein the one end of balance axle (11) forms and extends end (111), antifriction bearing (13) cover is in extending end (111) and being located the axle sleeve, the utility model discloses a through the size structure who changes original balance axle and axle sleeve, increased antifriction bearing's structure for original sliding friction has become rolling friction, greatly reduced axle and the dead risk of card even of axle sleeve wearing and tearing.

Description

Novel engine balance shaft assembly

Technical Field

The utility model relates to a balanced axle refabrication technical field. In particular to a novel engine balance shaft assembly.

Background

In response to the vibration of the engine, the mainstream method at present is to add a balance shaft system in the engine design. The shaft body of the balance shaft and the shaft sleeve pressed in the cylinder body form a sliding bearing so as to enable the balance shaft to operate. The requirement of a balance shaft system in an engine is met, and the rotating speed is required to run in ten thousand revolutions. Because the balance shaft and the shaft sleeve group are in sliding fit and have very high fit precision, in the high-speed rotation process of the balance shaft, an engine oil filter screen at the front/rear shaft necks of the balance shaft is easy to block due to engine oil impurities, so that the fit position of the shaft and the shaft sleeve is lack of sufficient lubrication to generate abrasion, and even the friction is heated and expanded, so that the jamming in the operation process of the balance shaft causes the abnormal operation of an engine.

Disclosure of Invention

In view of this, the present invention provides a novel engine balance shaft assembly.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a novel engine balance shaft assembly, its characterized in that: the balance shaft comprises a balance shaft (11), a shaft sleeve (12) and a rolling bearing (13), wherein an extending end (111) is formed at one end of the balance shaft (11), and the stabilizing bearing (13) is sleeved on the extending end (111) and fixed in the shaft sleeve.

Preferably, the rolling bearings (13) are needle bearings and are 2 in number.

Preferably, rolling bearings (13) are located on both sides of the extension end (111).

The utility model provides a novel engine balance shaft assembly through the size structure who changes original balance shaft and axle sleeve, has increased antifriction bearing's structure for original sliding friction has become rolling friction, is used for solving the old balance shaft of engine and leads to balance shaft wearing and tearing, jamming and even engine normal work scheduling problem because of the machine oil filter screen blocks up easily at axle sleeve internal rotation in-process. The utility model discloses in use antifriction bearing greatly reduced the phenomenon of the easy lack of machine oil of the rotatory in-process of balanced axle, replaced original slip by the roll of bearing, effectually solved balanced axle wearing and tearing, jamming or even locking and result in the unable work scheduling problem of engine.

Drawings

In order to make the purpose, technical scheme and beneficial effect of the utility model clearer, the utility model provides a following figure explains:

fig. 1 is an exploded view of the novel engine balance shaft assembly of the present invention.

In the figure, 11 is a balance shaft; 111 is an extension end; 12 is a shaft sleeve; and 13 is a rolling bearing.

Detailed Description

The present invention is further described with reference to the following drawings and specific embodiments so that those skilled in the art can better understand the present invention and can implement the present invention, but the embodiments are not to be construed as limiting the present invention.

As shown in fig. 1, a novel engine balance shaft assembly includes a balance shaft 11, a shaft sleeve 12, and a rolling bearing 13, wherein an extension end 111 is formed at one end of the balance shaft 11 and inserted into the shaft sleeve 12, and the rolling bearing 13 is sleeved on the extension end 111 of the balance shaft 11 and located in the shaft sleeve 12. In this embodiment, two rolling bearings 13 are provided, one on each side of the extending end 121. The rolling bearings 13 are each composed of two needle bearings. In practical application, the specific number can be set according to actual needs.

In the specific assembling process, the two rolling bearings 13 are respectively sleeved on the extension end 111, the stabilizing bearing 13 can rotate, and the rolling bearings 13 and the shaft sleeve 12 are relatively fixed after being assembled. During actual operation, friction is no longer generated between the sleeve 12 and the balance shaft 11, and rolling friction is generated by the rolling bearing 13. Thereby eliminating the phenomena that the shaft sleeve 12 and the balance shaft 11 are easy to generate overheating deformation and block.

The rolling bearings 13 are needle bearings in this embodiment and are located on both sides of the extension end.

In other embodiments, the stabilizing rolling bearing 13 is fixed relative to the balance shaft 11, forming rolling friction with the inside of the sleeve 12.

Compared with the prior art, the beneficial effects of the utility model are that: and optimally designing the balance shaft and the initial installation size of the balance shaft by applying a mechanism dynamics analysis theory, and designing the improved balance shaft, the rolling bearing and the shaft sleeve. The improved balance shaft has unchanged outer size, and the improved balance shaft assembly is adopted, so that the vibration exciting force of the engine is effectively reduced, and the vibration quality of the engine is improved.

The balance shaft assembly is used for balancing and reducing the vibration of the engine, so that the aims of reducing the noise of the engine, prolonging the service life and improving the comfort of a driver and a passenger are fulfilled. The problem of traditional balance shaft system machine oil filter screen block up easily, balance shaft wearing and tearing easily, friction generate heat and lead to jamming or even locking etc is solved.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. Equivalent substitutes or changes made by the technical personnel in the technical field on the basis of the utility model are all within the protection scope of the utility model. The protection scope of the present invention is subject to the claims.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, when used in the orientation or positional relationship indicated in the figures, are used merely for convenience in describing the invention and to simplify the description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting. Furthermore, the appearances of the terms "first," "second," and the like, if any, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations. .

Claims (4)

1. The utility model provides a novel engine balance axle assembly which characterized in that: the balance shaft comprises a balance shaft (11), a shaft sleeve (12) and a rolling bearing (13), wherein an extension end (111) is formed at one end of the balance shaft (11), and the rolling bearing (13) is sleeved on the extension end (111) and fixed in the shaft sleeve.

2. The novel engine balance shaft assembly of claim 1, wherein: the rolling bearings (13) are needle roller bearings, and the number of the rolling bearings is 2.

3. The novel engine balance shaft assembly of claim 2, wherein: rolling bearings (13) are located on both sides of the extension end (111).

4. The novel engine balance shaft assembly of claim 3, wherein: rolling friction is formed between the rolling bearing (13) and the balance shaft (11).

Images