阅读说明：本技术 一种中间铣孔的铸入式气缸套 (Cast-in cylinder sleeve with middle milled hole ) 是由 开育珑 王刚 张治纲 江平 于 2021-08-26 设计创作，主要内容包括：本发明公开了一种中间铣孔的铸入式气缸套,涉及发动机技术领域,发动机气缸的外侧套装有气缸套,所述气缸套的一侧连接有散热片,所述气缸套的远离散热片的一侧连接有铝合金缸体,所述铝合金缸体远离气缸套的一侧设置有链条腔,所述铝合金缸体靠近链条腔的一侧表面开设有固定孔,所述固定孔的内侧一端设置有预制孔；通过在铝合金缸体一侧表面的固定孔内侧设置一个预制孔,从而能够使得转动轴在将链条腔与铝合金缸体相连后,既能够使得链条腔与铝合金缸体之间的相互任意调整,从而增大送风面积和效率,同时提高转动轴的耐磨性,提高转动轴的使用寿命,且未对发动机本身的重量产生负担,影响发动机轻量化的发展。(The invention discloses a cast-in cylinder sleeve with a middle milling hole, which relates to the technical field of engines.A cylinder sleeve is sleeved on the outer side of an engine cylinder, one side of the cylinder sleeve is connected with a radiating fin, one side of the cylinder sleeve, which is far away from the radiating fin, is connected with an aluminum alloy cylinder body, one side of the aluminum alloy cylinder body, which is far away from the cylinder sleeve, is provided with a chain cavity, the surface of one side, which is close to the chain cavity, of the aluminum alloy cylinder body is provided with a fixing hole, and one end of the inner side of the fixing hole is provided with a prefabricated hole; through the fixed orifices inboard at aluminum alloy cylinder body side surface sets up a prefabricated hole to can make the axis of rotation link to each other the back with chain chamber and aluminum alloy cylinder body, can enough make the mutual arbitrary adjustment between chain chamber and the aluminum alloy cylinder body, thereby increase air supply area and efficiency, improve the wearability of axis of rotation simultaneously, improve the life of axis of rotation, and do not produce the burden to the weight of engine itself, influence the lightweight development of engine.)

1. The utility model provides a cast-in type cylinder jacket of middle milling bore, includes engine cylinder (1), its characterized in that, the outside cover of engine cylinder (1) is equipped with cylinder jacket (2), one side of cylinder jacket (2) is connected with fin (3), one side that fin (3) were kept away from in cylinder jacket (2) is connected with aluminum alloy cylinder body (4), one side that cylinder jacket (2) were kept away from in aluminum alloy cylinder body (4) is provided with chain chamber (8), fixed orifices (7) have been seted up on one side surface that aluminum alloy cylinder body (4) are close to chain chamber (8), the inboard one end of fixed orifices (7) is provided with prefabricated hole (11).

2. A center-milled cast-in cylinder liner according to claim 1, characterized in that the interior of the chain chamber (8) is provided with a filling layer (5).

3. A center-milled cast-in cylinder liner according to claim 1, characterized in that the fixing holes (7) are blind holes.

4. A center-milled cast-in cylinder liner according to claim 1, characterized in that the surface of the side of the fins (3) facing away from the cylinder liner (2) is provided with evenly distributed edge serrations (9).

5. A center-milled cast-in cylinder liner according to claim 1, characterized in that the outer side surface of the cylinder liner (2) is provided with evenly distributed embossments (10).

6. A middle-milled cast-in cylinder liner according to claim 1, characterized in that the preformed hole (11) has a diameter 2-4mm larger than the diameter of the fixing hole (7).

7. A middle-milled cast-in cylinder liner according to claim 1, characterized in that the preformed hole (11) has a depth of 3 mm.

Technical Field

The invention belongs to the technical field of engines, and particularly relates to a cast-in cylinder sleeve with a middle milled hole.

Background

The cylinder sleeve is a cylindrical part and is arranged in a cylinder body hole of the machine body, and the cylinder sleeve is tightly pressed and fixed by a cylinder cover; the piston reciprocates in the inner hole, is cooled by cooling water outside and forms a cylinder working space together with the cylinder cover and the piston;

the wall thickness of the existing cylinder sleeve is generally 5-7mm, the thickness of an aluminum alloy aluminum-coated layer on the outer wall of the cylinder sleeve is 3-4mm, the hole depth of a fixed hole of a transmission shaft needs 5-6mm, when a drill bit is machined to a boundary surface of aluminum alloy and cast iron during machining of the fixed hole, the drill bit is easy to vibrate due to the fact that the hardness difference between the aluminum alloy and the cast iron is large, the hole precision cannot meet the requirement, a hole is formed between the cylinder sleeve and an aluminum alloy cylinder body, the heat conduction performance is affected, the deformation of a cylinder hole is increased, the service life of the drill bit is shortened, and the machining cost is increased. In order to avoid the defects, the wall thickness of the cylinder sleeve can be reduced, and the thickness of the aluminum-coated layer is increased, so that the strength of the cylinder sleeve is reduced after the wall thickness of the cylinder sleeve is reduced, the deformation of a cylinder hole is increased, the sealing performance is reduced, the oil consumption is increased, and the power of an engine is reduced. The whole volume of the cylinder body can be increased by increasing the thickness of the aluminum-coated layer, but the weight is increased along with the increase of the volume of the cylinder body, the fuel consumption is increased, the lightweight development of an engine is not facilitated, and therefore the cast-in cylinder sleeve with the middle milled hole is provided.

Disclosure of Invention

The invention aims to provide a cast-in cylinder liner with a milled hole in the middle.

The problems to be solved by the invention are as follows: how do not influence the engine performance for the cooperation between the cylinder jacket can and the engine cylinder is more high-efficient, thereby improves engine cylinder's work efficiency.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a cast-in type cylinder jacket of middle milling bore, includes engine cylinder, engine cylinder's outside cover is equipped with the cylinder jacket, one side of cylinder jacket is connected with the fin, one side of keeping away from the fin of cylinder jacket is connected with the aluminum alloy cylinder body, one side that the cylinder jacket was kept away from to the aluminum alloy cylinder body is provided with the chain chamber, the aluminum alloy cylinder body is close to a side surface in chain chamber and has seted up the fixed orifices, the inboard one end of fixed orifices is provided with prefabricated hole.

Further, a filling layer is arranged inside the chain cavity.

Further, the fixing hole is a blind hole.

Further, edge sawteeth which are uniformly distributed are arranged on the surface of one side, away from the cylinder sleeve, of the cooling fin.

Further, the outer side surface of the cylinder liner is provided with evenly distributed protrusions.

Furthermore, the diameter of the prefabricated hole is larger than that of the fixing hole, and the diameter of the prefabricated hole is 2-4mm larger than that of the fixing hole.

Further, the depth of the prefabricated hole is 3 mm.

The invention has the beneficial effects that:

1. according to the invention, the prefabricated hole is arranged on the inner side of the fixing hole on the surface of one side of the aluminum alloy cylinder body, the diameter of the prefabricated hole is 2-4mm larger than that of the fixing hole, and the depth of the prefabricated hole is 3mm, so that after the chain cavity is connected with the aluminum alloy cylinder body by the rotating shaft, the chain cavity and the aluminum alloy cylinder body can be adjusted at will, the air supply area and the air supply efficiency are increased, the wear resistance of the rotating shaft is improved, the service life of the rotating shaft is prolonged, the weight of an engine is not burdened, and the development of light weight of the engine is influenced.

2. The outer side surface of the cylinder sleeve is provided with the uniformly distributed salient points, and the uniformly distributed salient points are arranged on the surface of the cylinder sleeve, so that the direct contact area of the cylinder sleeve and the surface of an engine cylinder is reduced, a large leaping phenomenon cannot occur when the engine cylinder operates, and the stability of the engine cylinder is improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view of the overall construction of a center-milled cast-in cylinder liner;

fig. 2 is a schematic diagram of a liner outer surface structure of a center-milled cast-in cylinder liner;

fig. 3 is a schematic diagram of a pre-hole configuration for a center-milled cast-in cylinder liner.

In the figure: 1. an engine cylinder; 2. a cylinder liner; 3. a heat sink; 4. an aluminum alloy cylinder body; 5. a filling layer; 6. a rotating shaft; 7. a fixing hole; 8. a chain cavity; 9. edge serrations; 10. salient points; 11. and (6) hole prefabrication.

Detailed Description

As shown in fig. 1-3, a cast-in cylinder liner with milled holes in the middle comprises an engine cylinder 1, a cylinder liner 2, cooling fins 3, an aluminum alloy cylinder body 4, a filling layer 5, a rotating shaft 6, fixing holes 7, a chain cavity 8, edge sawteeth 9, salient points 10 and prefabricated holes 11;

the engine cylinder is characterized in that a cylinder sleeve 2 is sleeved on the outer side of the engine cylinder 1, a radiating fin 3 is connected to one side of the cylinder sleeve 2, an aluminum alloy cylinder body 4 is connected to one side, far away from the radiating fin 3, of the cylinder sleeve 2, a chain cavity 8 is formed in one side, far away from the cylinder sleeve 2, of the aluminum alloy cylinder body 4, and a filling layer 5 is arranged inside the chain cavity 8;

a fixing hole 7 is formed in the surface of one side, close to the chain cavity 8, of the aluminum alloy cylinder body 4, and a prefabricated hole 11 is formed in one end of the inner side of the fixing hole 7;

the fixing hole 7 is a blind hole;

the side surface of the cooling fin 3 far away from the cylinder sleeve 2 is provided with evenly distributed edge sawteeth 9, and in the actual use process, the edge sawteeth 9 evenly distributed are arranged on the side surface of the cooling fin 3, so that the heat dissipation area of the cooling fin 3 is increased, and the heat dissipation capacity of the cooling fin 3 in the running process of an engine is improved.

The wall thickness of the existing cylinder sleeve is generally 5-7mm, the thickness of an aluminum alloy coated aluminum layer on the outer wall of the cylinder sleeve is 3-4mm, the hole depth of a transmission shaft fixing hole 7 needs 5-6mm, when a drill bit is processed to the boundary surface of aluminum alloy and cast iron when the fixing hole 7 is processed, the difference of hardness of the aluminum alloy and the cast iron is large, the drill bit is easy to shake, so that the aperture precision of the fixing hole 7 cannot meet the requirement, a hole is generated between the cylinder sleeve 2 and an aluminum alloy cylinder body 4, and the heat conduction performance is influenced, so that the deformation of the fixing hole 7 is increased; in order to avoid the defects, the problem is usually solved by reducing the wall thickness of the cylinder sleeve and improving the thickness of the aluminum-coated layer, but the strength of the cylinder sleeve is reduced after the wall thickness of the cylinder sleeve 2 is reduced, the deformation of the fixing hole 7 is increased, the sealing performance is reduced, the oil consumption is increased, the power of an engine is reduced, the problem of increasing the whole volume of an engine cylinder body can be solved by increasing the thickness of the aluminum-coated layer, but along with the increase of the volume of the engine cylinder body, the weight is increased, the fuel consumption is increased, and the lightweight development of the engine is not facilitated. In the invention, the prefabricated hole 11 is arranged on the inner side of the fixing hole 7 on the surface of one side of the aluminum alloy cylinder body 4, the diameter of the prefabricated hole 11 is 2-4mm larger than that of the fixing hole 7, and the depth of the prefabricated hole is 3mm, so that after the chain cavity 8 is connected with the aluminum alloy cylinder body 4 by the rotating shaft 6, the chain cavity 8 and the aluminum alloy cylinder body 4 can be adjusted freely, the air supply area and efficiency are increased, the wear resistance of the rotating shaft 6 is improved, the service life of the rotating shaft 6 is prolonged, the weight of an engine is not burdened, and the development of light weight of the engine is influenced.

The outer side surface of the cylinder sleeve 2 is provided with the bumps 10 which are uniformly distributed, and the bumps 10 which are uniformly distributed are arranged on the surface of the cylinder sleeve 2, so that the direct contact area between the cylinder sleeve 2 and the surface of the engine cylinder 1 is reduced, a large leaping phenomenon cannot occur when the engine cylinder 1 operates, and the stability of the engine cylinder 1 is improved.

The working principle is as follows: through set up a prefabricated hole 11 in the fixed orifices 7 inboard at 4 side surfaces of aluminum alloy cylinder body, the diameter ratio of prefabricated hole 11 is 2-4mm bigger than the diameter of fixed orifices 7, and the degree of depth is 3mm, thereby can make axis of rotation 6 link to each other back with chain chamber 8 and aluminum alloy cylinder body 4, can enough make the mutual arbitrary adjustment between chain chamber 8 and the aluminum alloy cylinder body 4, thereby increase air supply area and efficiency, improve the wearability of axis of rotation 6 simultaneously, improve the life of axis of rotation 6, and do not produce the burden to the weight of engine itself, influence the lightweight development of engine. The outer side surface of the cylinder sleeve 2 is provided with the uniformly distributed salient points 10, and the uniformly distributed salient points 10 are arranged on the surface of the cylinder sleeve 2, so that the direct contact area between the cylinder sleeve 2 and the surface of the engine cylinder 1 is reduced, a large leaping phenomenon cannot occur when the engine cylinder 1 operates, and the stability of the engine cylinder 1 is improved.

The foregoing is illustrative and explanatory of the structure of the invention, and various modifications, additions or substitutions in a similar manner to the specific embodiments described may be made by those skilled in the art without departing from the structure or scope of the invention as defined in the claims. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. A plurality of units or means recited in the system claims may also be implemented by one unit or means in software or hardware. The terms second, etc. are used to denote names, but not any particular order.

Finally, it should be noted that the above examples are only intended to illustrate the technical process of the present invention and not to limit the same, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical process of the present invention without departing from the spirit and scope of the technical process of the present invention.