CN215595739U

CN215595739U - Cylinder cover structure

Info

Publication number: CN215595739U
Application number: CN202120266887.4U
Authority: CN
Inventors: 蒋维; 樊心龙
Original assignee: Guangxi Yuchai Machinery Co Ltd
Current assignee: Guangxi Yuchai Machinery Co Ltd
Priority date: 2021-01-29
Filing date: 2021-01-29
Publication date: 2022-01-21
Anticipated expiration: 2031-01-29

Abstract

The embodiment of the application discloses cylinder head structure can make the impact force of the machine oil that flows out in the vacuum pump cushion, weakens the effort of machine oil to the rubber coating, has increased the life-span of rubber coating, and the effectual machine oil that prevents leaks to the engine outside. The application includes: the cylinder head cover comprises a cylinder head cover body, a cylinder head body, a first oil drainage groove arranged on the cylinder head cover body and a second oil drainage groove arranged on the cylinder head body; the cylinder head cover body is connected with the cylinder head body, a cylinder head glue coating is placed at the joint of the cylinder head cover body and the cylinder head body, the cylinder head glue coating is used for sealing the joint of the cylinder head cover body and the cylinder head body, the first oil drainage groove and the second oil drainage groove are matched to form an oil drainage cavity, the cylinder head cover body is connected with a vacuum pump, the oil drainage cavity is placed in the forward direction of an oil outlet on the vacuum pump, and the oil drainage cavity is arranged between the oil outlet of the vacuum pump and the cylinder head glue coating.

Description

Cylinder cover structure

Technical Field

The embodiment of the application relates to the technical field of engines, in particular to a cylinder cover structure.

Background

The vehicle is at the in-process of traveling, need continuous compression work outward output power in the cylinder, the operational environment of cylinder needs to go on under sealed environment, it is the cylinder casing to use with the cylinder supporting, the effect of cylinder casing is sealed cylinder, a plurality of pistons have been placed to cylinder inside, sealed cylinder and the inside combustion space that forms of cylinder, wherein, the piston carries out up-and-down motion in the cylinder inside, compress the burning to the gas of cylinder inside and the fuel that sprays, cylinder head and cylinder need bear the effect of high temperature high pressure gas, still bear very high heat load owing to contact with high temperature gas simultaneously, in order to guarantee the good sealed of cylinder, the cylinder head can not damage, also can warp, therefore, the cylinder head should have sufficient intensity and rigidity.

The vacuum pump that matches the use on the cylinder, current engine cylinder head cover dress is to the cylinder head on, the rubber coating is sealed between cylinder head cover and the cylinder head, the machine oil-out of vacuum pump just in time is facing to the rubber coating, the transmission shaft of vacuum pump is directly proportional with the rotational speed of engine, engine speed is higher, the machine oil flow of vacuum pump export is big more, the machine oil velocity of flow is also high more, because current cylinder head can not cushion the impact force of vacuum pump export machine oil, so the destructive power to the rubber coating is very big, cause the oil leak hidden danger easily.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a cylinder head structure, can make the impact force of the machine oil that flows in the vacuum pump cushion, weaken the machine oil to the effort on rubber coating, increased the life-span on rubber coating, the effectual machine oil that prevents seepage to the engine outside.

The application provides a cylinder head structure, includes: the oil drain structure comprises a cylinder head cover body, a cylinder head body, a first oil drain groove arranged on the cylinder head cover body and a second oil drain groove arranged on the cylinder head body;

the cylinder head cover body with this body coupling of cylinder head, the cylinder head cover body with the cylinder head junction of body has placed the cylinder head spreading layer, the cylinder head spreading layer is used for sealing the cylinder head cover body with the junction of cylinder head body, first draining groove with the cooperation of second draining groove forms the draining cavity, cylinder head cover body and vacuum pump connection, the draining cavity with oil-out forward on the vacuum pump is placed, the draining cavity sets up the oil-out of vacuum pump and between the cylinder head spreading layer, the draining cavity is used for right the machine oil of the outflow in the vacuum pump cushions, baffle and separation blade are installed to the oil-out department of vacuum pump, the baffle and the separation blade sets up in the draining cavity.

Optionally, a first arc surface is arranged on the inner surface of the first oil drainage groove on the cylinder head cover body, and the first arc surface is a smooth surface.

Optionally, a second arc surface is arranged on the inner surface of the second oil drainage groove on the cylinder cover body, and the second arc surface is a smooth surface.

Optionally, the inner surface of the oil drainage cavity is composed of the first arc surface and the second arc surface, and a gap at a joint of the first arc surface and the second arc surface is smaller than a preset gap.

Optionally, a first accommodating cavity is formed in the cylinder head cover body, one end of the first oil drainage groove is communicated with the first accommodating cavity, and the other end of the first oil drainage groove is formed in the cylinder head cover body.

Optionally, a second accommodating cavity is formed in the cylinder head body, one end of the second oil drainage groove is communicated with the second accommodating cavity, and the other end of the second accommodating cavity is formed in the cylinder head body.

Optionally, the first accommodating cavity and the second accommodating cavity are in contact connection to form a sealed cavity, one end of the oil drainage cavity is communicated with the sealed cavity, and the other end of the oil drainage cavity is arranged in the cylinder head cover body and the cylinder head body.

Optionally, the baffle is arranged in front of the baffle, the baffle is in contact with an oil outlet of the vacuum pump, and the baffle is made of a material with bending performance.

Optionally, a preset distance is arranged between the oil outlet of the vacuum pump and the baffle, and the baffle is installed between the preset distances.

Optionally, one end of the blocking piece is installed at the bottom of the preset interval, and the other end of the blocking piece is in contact with but not connected with the oil outlet of the vacuum pump.

According to the technical scheme, the embodiment of the application has the following advantages:

the cylinder head cover body is connected with the cylinder head body through the first oil drainage groove arranged on the cylinder head cover body and the second oil drainage groove arranged on the cylinder head body, after the cylinder head cover is connected with the cylinder head, the first oil drainage groove and the second oil drainage groove are in contact fit to form an oil drainage cavity, an air head gluing layer is arranged at the joint of the cylinder head cover body and the cylinder head body and used for sealing the joint of the cylinder head cover body and the cylinder head body, the cylinder head cover body is connected with the vacuum pump, the oil drainage cavity and an oil outlet on the vacuum pump are arranged in the forward direction, and the oil drainage cavity is arranged between the oil outlet of the vacuum pump and the air head gluing layer; can know through the aforesaid, high when engine speed, the machine oil flow of vacuum pump export is big, when the machine oil velocity of flow is also high, the machine oil of outflow can enter into the draining cavity, the draining cavity can cushion the machine oil of the outflow in the vacuum pump, effectively reduce the impact force that machine oil flows the production, machine oil after the buffering just can contact in the cylinder head rubber coating, thereby weakened the effort of machine oil to the rubber coating, the life-span of rubber coating has been increased, the effectual machine oil seepage that prevents is outside the engine.

Drawings

FIG. 1 is a front structural sectional view of a cylinder head structure according to the present application;

FIG. 2 is a cross-sectional view of the cylinder head construction of the present application;

FIG. 3 is a partially enlarged schematic view of the cylinder head structure of the present application;

FIG. 4 is a schematic diagram of the arrangement position of a first oil drainage groove in the cylinder head structure of the present application.

Detailed Description

In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for explaining relative positional relationships between the respective members or components, and do not particularly limit specific mounting orientations of the respective members or components.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the structures, the proportions, the sizes, and the like, which are illustrated in the accompanying drawings and described in the present application, are intended to be considered illustrative and not restrictive, and therefore, not limiting, since those skilled in the art will understand and read the present application, it is understood that any modifications of the structures, changes in the proportions, or adjustments in the sizes, which are not necessarily essential to the practice of the present application, are intended to be within the scope of the present disclosure without affecting the efficacy and attainment of the same.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The cylinder head cover of the existing engine is assembled on the cylinder head, the glue is coated between the cylinder head cover and the cylinder head to seal, the engine oil outlet of the vacuum pump just faces to the glue coating layer, the transmission shaft of the vacuum pump is in direct proportion to the rotating speed of the engine, the higher the rotating speed of the engine is, the larger the engine oil flow of the outlet of the vacuum pump is, the higher the engine oil flow rate is, and the impact force of the engine oil at the outlet of the vacuum pump cannot be buffered by the existing cylinder head, so that the destructive power of the glue coating layer is very large, and the hidden danger of oil leakage is easily caused.

Based on this, the application provides a cylinder head structure, can make the impact force of the machine oil of outflow in the vacuum pump cushion, weaken machine oil to the effort of rubber coating, increased the life-span of rubber coating, the effectual machine oil seepage that prevents is outside to the engine.

Referring to fig. 1 to 4, the present application provides a cylinder head structure including: the oil drain structure comprises a cylinder head cover body 1, a cylinder head body 2, a first oil drain groove 11 arranged on the cylinder head cover body 1 and a second oil drain groove 21 arranged on the cylinder head body 2; the cylinder head cover body 1 is connected with the cylinder head body 2, a cylinder head glue coating layer 3 is arranged at the joint of the cylinder head cover body 1 and the cylinder head body 2, the cylinder cover glue coating 3 is used for sealing the joint of the cylinder cover body 1 and the cylinder cover body 2, the first oil drainage groove 11 and the second oil drainage groove 21 are matched to form an oil drainage cavity 5, the cylinder head cover body 1 is connected with a vacuum pump 4, the oil drainage cavity 5 and an oil outlet 41 on the vacuum pump 4 are arranged in the positive direction, the oil drainage cavity 5 is arranged between the oil outlet 41 of the vacuum pump 4 and the cylinder cover glue coating layer 3, the oil drainage cavity 5 is used for buffering the engine oil flowing out of the vacuum pump 4, a baffle 42 and a baffle 43 are installed at an oil outlet 41 of the vacuum pump 4, and the baffle 42 and the baffle 43 are arranged in the oil drainage cavity 5.

In the embodiment of the present application, the connection manner of the cylinder head body 2 and the cylinder head cover body 1 is a detachable connection manner, for example: the connection is carried out through bolts or screws, etc., in the present application, the connection mode of the cylinder head body 2 and the cylinder head cover body 1 is not specifically limited, which is carried out under high temperature and high pressure conditions in the working environment inside the cylinder, but when the cylinder head body 2 and the cylinder head cover 1 are connected, a reserved gap exists between the connection planes, so in order to ensure the sealing performance inside the cylinder, the cylinder head glue coating layer 3 is required to be placed between the cylinder head body 2 and the cylinder head cover body 1, the reserved gap can be effectively filled through the arrangement of the cylinder head glue coating layer 3, and further the space formed by the cylinder head body 2 and the cylinder head cover body 1 is in a sealed environment, so that the work of the cylinder can be smoothly carried out, the first oil drainage groove 11 is arranged on the cylinder head cover body 1, the first oil drainage groove 11 is arranged on one side of the cylinder head cover body 1, the cylinder cover body 2 is provided with a second oil drainage groove 21, the second oil drainage groove 21 is arranged on one side of the cylinder cover body 2, it is to be noted that when the cylinder cover body 2 and the cylinder cover body 1 are connected and fixed, the first oil drainage groove 11 and the second oil drainage groove 21 are contacted to form an oil drainage cavity 5, the formed oil drainage cavity 5 is in a semicircular shape with a preset angle, in the application, the preset angle of the oil drainage cavity 5 is not limited, the formed oil drainage cavity 5 and an oil outlet 41 of the vacuum pump 4 are placed in a forward direction, the forward placement mainly means that the oil drainage cavity 5 and the oil outlet 41 of the vacuum pump 4 are placed on the same horizontal plane, in practical application, a mounting height difference between mounting positions of the oil drainage cavity 5 and the vacuum pump 4 is allowed, and specific height difference values are not specifically limited in the application; when the machine oil flow of 4 exports of vacuum pump is big, when the machine oil velocity of flow is also high, the machine oil of outflow can enter into draining cavity 5, draining cavity 5 can cushion the machine oil of the outflow in vacuum pump 4, effectively reduce the impact force that the machine oil flows and produces, machine oil after the buffering just can contact in cylinder head rubber coating 3 to weaken the effort of machine oil to the rubber coating, increased the life-span of rubber coating, the effectual machine oil seepage that prevents is outside the engine.

Under some circumstances, the vacuum pump 4 can enter into first draining groove 11 and second draining groove 21 earlier from the spun machine oil in oil-out 41, after the buffering of first draining groove 11 and second draining groove 21, the machine oil that flows out just can contact in the cylinder head rubber coating 3, if the draining groove designs for right angle shape or acute angle shape, spun machine oil can remain on right angle and acute angle, remaining machine oil is difficult to drop.

In view of the above problems, embodiments of the present application provide the following solutions: optionally, a first arc surface is arranged on the inner surface of the first oil drainage groove 11 on the cylinder head cover body 1, and the first arc surface is a smooth surface; and a second arc surface is arranged on the inner surface of the second oil drainage groove 21 on the cylinder cover body 2, and the second arc surface is a smooth surface.

In the embodiment of the present application, the first oil drainage groove 11 on the body of the cylinder head cover 1 is set to be an arc surface, and the second oil drainage groove 21 on the body of the cylinder head 2 is also set to be an arc surface, so that when the engine oil of the vacuum pump 4 is injected to the first oil drainage groove 11 and the second oil drainage groove 21, the engine oil remaining on the surfaces of the first oil drainage groove 11 and the second oil drainage groove 21 will slide down along the arc surface, and the engine oil will not remain on the surfaces of the first oil drainage groove 11 and the second oil drainage groove 21.

Optionally, the inner surface of the oil drainage cavity 5 is composed of the first arc surface and the second arc surface, and a gap at a joint of the first arc surface and the second arc surface is smaller than a preset gap.

In the embodiment of the present application, the inner surface of the oil drainage cavity 5 mainly comprises a first arc surface and a second arc surface, and since the first arc surface and the second arc surface are provided with a preset angle, when the oil drainage cavity 5 is formed by combination, the oil drainage cavity 5 as a whole presents an arc shape with a certain angle, in the present application, the preset angle of the first arc surface and the second arc surface is not specifically limited, and a gap is provided at the contact connection between the first arc surface and the second arc surface, and the provided gap is smaller than the preset gap, it should be noted that the preset gap is a gap through which the engine oil can flow out at a relatively fast speed, so as to slow down the impact of the engine oil on the glue coating layer 3, the gap provided at the contact connection between the first arc surface and the second arc surface needs to be smaller than the preset gap, so that the engine oil flowing out from the vacuum pump 4 passes through the oil drainage cavity 5, then the engine oil flows into the cylinder cover glue coating 3 from the gap, the acting force of the engine oil on the glue coating is weakened, the service life of the glue coating is prolonged, and the engine oil is effectively prevented from leaking to the outside of the engine.

Optionally, a first accommodating cavity is formed in the cylinder head cover body 1, one end of the first oil drainage groove 11 is communicated with the first accommodating cavity, and the other end of the first oil drainage groove 11 is arranged in the cylinder head cover body 1; a second accommodating cavity is formed in the cylinder head body 2, one end of the second oil drainage groove 21 is communicated with the second accommodating cavity, and the other end of the second accommodating cavity is formed in the cylinder head body 2; the first accommodating cavity and the second accommodating cavity are in contact connection to form a sealing cavity, one end of the oil drainage cavity 5 is communicated with the sealing cavity, and the other end of the oil drainage cavity 5 is arranged in the cylinder head cover body 1 and the cylinder head body 2.

In the embodiment of the present application, the other end of the first oil drainage groove 11 is disposed in the cylinder head cover body 1, mainly means that the other end of the first oil drainage groove 11 does not penetrate through the cylinder head cover body 1, and is contained inside the cylinder head cover body 1, the other end of the second oil drainage groove 21 is disposed in the cylinder head body 2, and mainly means that the oil drainage groove at the other end of the second oil drainage groove 21 does not penetrate through the cylinder head body 2, and is contained in the cylinder head body 2.

Optionally, the baffle 42 is disposed in front of the blocking piece 43, the blocking piece 43 is in contact with the oil outlet 41 of the vacuum pump 4, and the baffle 42 is made of a material with bending performance; a preset distance is arranged between an oil outlet 41 of the vacuum pump 4 and the baffle 42, and the baffle 43 is installed between the preset distances; one end of the baffle 43 is installed at the bottom of the preset distance, the other end of the baffle 43 is in contact with but not connected with the oil outlet 41 of the vacuum pump 4, when the engine oil flows out from the oil outlet 41 of the vacuum pump 4 and contacts the baffle 43, the engine oil pushes one end of the baffle 43 open to form an opening, so that the engine oil flows into the oil drainage cavity 5 from the opening.

In the embodiment of the present application, the blocking plate 43 is disposed at the oil outlet 41 of the vacuum pump 4, when the oil in the vacuum pump 4 flows outward into the oil drainage groove, the oil needs to pass through the blocking plate 43 first, it should be noted that the oil flowing out of the vacuum pump 4 has a preset flow rate and pressure, and the flowing-out oil pushes the blocking plate 43 aside, so that an opening is formed at the blocking plate 43 and the oil outlet 41 of the vacuum pump 4, the oil can flow out from the opening, then the oil can flow into a preset gap formed between the oil outlet 41 of the vacuum pump 4 and the blocking plate 42, and finally the oil flows into the oil drainage cavity 5.

It should be noted that the above-mentioned embodiments and embodiments are intended to demonstrate the practical application of the technical solution provided by the present invention, and should not be construed as limiting the scope of the present invention. Various modifications, equivalent substitutions, or improvements may be made by those skilled in the art within the spirit and principles of the utility model. The scope of the utility model is to be determined by the appended claims.

Claims

1. A cylinder head structure characterized by comprising: the oil drain structure comprises a cylinder head cover body, a cylinder head body, a first oil drain groove arranged on the cylinder head cover body and a second oil drain groove arranged on the cylinder head body;

the cylinder head cover body is connected with the cylinder head body, a cylinder head glue coating is placed at the joint of the cylinder head cover body and the cylinder head body, the cylinder cover glue coating is used for sealing the joint of the cylinder cover body and the cylinder cover body, the first oil drainage groove and the second oil drainage groove are matched to form an oil drainage cavity, the cylinder head cover body is connected with a vacuum pump, the oil drainage cavity is arranged in the positive direction with the oil outlet on the vacuum pump, the oil drainage cavity is arranged between the oil outlet of the vacuum pump and the glue coating layer of the cylinder cover, the oil drainage cavity is used for buffering the engine oil flowing out of the vacuum pump, a baffle plate and a baffle plate are arranged at the oil outlet of the vacuum pump, the baffle and the separation blade set up in the draining cavity, the baffle and the separation blade cooperation is used for slowing down the machine oil flow direction in the vacuum pump the speed of draining cavity.

2. The cylinder head structure of claim 1, wherein the first oil drainage groove inner surface on the cylinder head cover body is provided with a first arc surface, and the first arc surface is provided with a smooth surface.

3. The cylinder head structure according to claim 2, wherein a second circular arc surface is provided on an inner surface of the second oil drainage groove on the cylinder head body, and the second circular arc surface is provided as a smooth surface.

4. The cylinder cover structure according to claim 3, wherein an inner surface of the oil drainage cavity is composed of the first arc surface and the second arc surface, and a gap at a joint of the first arc surface and the second arc surface is smaller than a preset gap.

5. The cylinder head structure of claim 1, wherein a first accommodating cavity is formed in the cylinder head cover body, one end of the first oil drainage groove is communicated with the first accommodating cavity, and the other end of the first oil drainage groove is formed in the cylinder head cover body.

6. The cylinder head structure according to claim 5, wherein a second accommodating chamber is provided in the cylinder head body, one end of the second oil drain groove communicates with the second accommodating chamber, and the other end of the second accommodating chamber is provided in the cylinder head body.

7. The cylinder head structure according to claim 6, wherein the first receiving chamber and the second receiving chamber are in contact connection to form a seal chamber, the oil drainage chamber communicates at one end with the seal chamber, and the oil drainage chamber is provided at the other end in the cylinder head cover body and the cylinder head body.

8. The cylinder head structure according to claim 1, wherein the baffle is provided in front of the baffle which is in contact with an oil outlet of the vacuum pump, the baffle being made of a material having bending properties.

9. The cylinder head structure according to claim 8, wherein a preset spacing is provided between an oil outlet of the vacuum pump and the baffle, and the baffle is mounted between the preset spacing.

10. The cylinder head structure according to claim 9, wherein one end of the baffle is mounted at the bottom of the preset space, and the other end of the baffle is in contact with but not connected to an oil outlet of the vacuum pump.