Cylinder cover sealing gasket

Abstract

The utility model relates to the technical field of air cylinder gaskets, and discloses an air cylinder cover sealing gasket which comprises an upper gasket body, a middle gasket body is fixedly connected to the bottom of the upper gasket body, and a lower gasket body is fixedly connected to the bottom of the middle gasket body. The outer surface of the upper gasket and the outer surface of the lower gasket are fixedly connected with gaskets used for assisting in sealing. According to the cylinder cover sealing gasket, the upper gasket body, the middle gasket body and the lower gasket body are arranged in a matched mode, the upper gasket body, the middle gasket body and the lower gasket body can be mutually extruded after a cylinder cover is installed through mutual matching of the three gasket bodies, and therefore relative deformation of the three gasket bodies can be used for sealing the cylinder cover; according to the sealing device for the air cylinder cover, a hole between the air cylinder cover and the air cylinder body is fully sealed, the overall sealing performance of the sealing device is improved, further filling can be carried out on the periphery of an empty space in the air cylinder cover through the arrangement of the gasket, and the gasket can be greatly deformed according to extrusion.

Description

Technical Field

[0001] The utility model relates to the technical field of cylinder liner, in particular to a cylinder head sealing liner. Background Art

[0002] The function of the cylinder head is to seal the cylinder, form a combustion space together with the piston, and withstand the effects of high-temperature and high-pressure combustion gas. The cylinder head bears the gas force and the mechanical load caused by tightening the cylinder bolts. At the same time, it also bears a very high thermal load due to contact with high-temperature combustion gas. In order to ensure a good seal of the cylinder, the cylinder head must neither be damaged nor deformed. For this reason, the cylinder head should have sufficient strength and rigidity.

[0003] The cylinder gasket, also known as the cylinder liner, is located between the cylinder head and the cylinder block. Its function is to fill the microscopic gaps between the cylinder block and the cylinder head to ensure good sealing at the joint surface, thereby ensuring the sealing of the combustion chamber and preventing air leakage in the cylinder and water leakage in the water jacket. Depending on the material, the cylinder gasket can be divided into metal asbestos gaskets, metal composite gaskets and all-metal gaskets.

[0004] Chinese patent announcement number CN207161221U discloses a cylinder head gasket. The metal cylinder head gasket is a circular ring. The circular ring is an inner and outer double-layer structure, wherein the inner layer is a graphene layer and the outer layer is a stainless steel layer. Graphene is a heat-insulating material, which plays the role of a heat-insulating layer and a seal in the cylinder head gasket, so that the cylinder head gasket is not easy to deform even when the combustion chamber transfers high temperature to the cylinder head gasket for a long time, and has good sealing performance, which greatly increases its service life.

[0005] However, the utility model has the following problems when actually used:

[0006] Existing cylinder head gaskets are all made of composite materials. After the cylinder head is installed, the cylinder head gasket is often squeezed and deformed. After a long period of squeezing, it is easy to be damaged, which leads to failure of sealing and oil leakage, and the overall durability and sealing are not high. Utility Model Content

[0007] 1. Technical issues to be resolved

[0008] In order to overcome the above-mentioned defects of the prior art, the utility model provides a cylinder head sealing gasket, which solves the problems in the prior art:

[0009] Existing cylinder head gaskets are all made of composite materials. After the cylinder head is installed, the cylinder head gasket is often squeezed and deformed. After a long period of squeezing, it is easy to be damaged, which leads to failure of sealing and oil leakage, and the overall durability and sealing are not high.

[0010] (II) Technical solution

[0011] To achieve the above objectives, the utility model is implemented through the following technical scheme: a cylinder head sealing gasket, including an upper gasket, the bottom of the upper gasket is fixedly connected to a middle gasket, the bottom of the middle gasket is fixedly connected to a lower gasket, and the outer surfaces of the upper gasket and the lower gasket are fixedly connected to gaskets for auxiliary sealing.

[0012] Optionally, both sides of the inner wall of the gasket are provided with empty grooves for providing deformation space, and the inner wall of the gasket is provided with a cavity between the two empty grooves.

[0013] Optionally, cylinder holes are respectively provided on both sides of the upper sheet gasket, and a positioning hole is provided on the outer surface of the upper sheet gasket above the cylinder hole.

[0014] Optionally, a bolt hole is provided on the outer surface of the upper gasket below the cylinder hole, and four water holes are provided on the outer surface of the upper gasket at the periphery of the cylinder hole.

[0015] Optionally, a through hole is opened on the outer surface of the upper gasket between the two cylinder holes, and four oil holes are opened on the outer surface of the upper gasket at the four corners of the through hole.

[0016] Optionally, a push rod hole is provided below the outer surface of the upper sheet pad.

[0017] Optionally, edges of outer surfaces of the upper sheet pad, the middle sheet pad and the lower sheet pad are all fixedly connected with retaining rings for blocking.

[0018] Optionally, both sides of the outer surfaces of the upper sheet pad, the middle sheet pad and the lower sheet pad are covered with a coating.

[0019] (III) Beneficial effects

[0020] The utility model provides a cylinder head sealing gasket, which has the following beneficial effects:

[0021] The cylinder head sealing gasket, through the coordinated setting of the upper gasket, the middle gasket and the lower gasket, can utilize the mutual cooperation of the three gaskets. After the cylinder head is installed, the upper gasket, the middle gasket and the lower gasket can be squeezed against each other, so that the relative deformation between the three gaskets can be utilized to fully seal the gap between the cylinder head and the cylinder body, thereby improving the overall sealing of the device, and through the setting of the gasket, the empty space on the cylinder head can be further filled around, and the gasket can be deformed to a greater extent according to the extrusion, so as to more fully fill the gap to improve the overall sealing. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the installation position structure of the gasket of the utility model;

[0024] Figure 3 This is a schematic diagram of the coating covering position structure of the utility model;

[0025] Figure 4 This is a schematic diagram of the retaining ring fixing structure of the utility model;

[0026] Figure 5 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at AA in the middle;

[0027] Figure 6 For this utility model Figure 2 Schematic diagram of the cross-section structure at BB in the middle;

[0028] Figure 7 For this utility model Figure 2 Schematic diagram of the cross-section structure at CC in the middle;

[0029] Figure 8 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at DD in the middle;

[0030] Fig. 9 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at EE in the middle;

[0031] Fig.10 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at FF in the middle;

[0032] Fig.11 For this utility model Figure 2 Schematic diagram of the cross-sectional structure at GG in the middle;

[0033] Fig.12 For this utility model Figure 2 Schematic diagram of the structure at K in the middle;

[0034] Fig.13 For this utility model Fig.12 The schematic diagram of the cross-sectional structure at JJ in the middle;

[0035] Fig.14 For this utility model Fig.12 The schematic diagram of the cross-section structure at KK in the middle;

[0036] Fig.15 This is a schematic diagram of the cross-sectional structure of the retaining ring of the utility model;

[0037] Fig.16 This is a schematic diagram of the structure of the gasket of the utility model;

[0038] Fig.17 This is a schematic diagram of the cross-sectional structure of the gasket of the utility model.

[0039] In the figure: 1. upper plate gasket; 2. gasket; 3. empty groove; 4. cavity; 5. middle plate gasket; 6. lower plate gasket; 7. positioning hole; 8. bolt hole; 9. water hole; 10. oil hole; 11. cylinder hole; 12. through hole; 13. push rod hole; 14. retaining ring; 15. coating. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] See also Figures 1 to 17 The utility model provides a technical solution: a cylinder head sealing gasket, which is as follows:

[0042] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Fig.16 and Fig.17 In order for the upper gasket 1, the middle gasket 5 and the lower gasket 6 to fully seal the gap between the cylinder head and the cylinder body when in use, a gasket 2 is provided on the outer wall of the upper gasket 1 and the lower gasket 6;

[0043] The bottom of the upper gasket 1 is fixedly connected to the top of the middle gasket 5, and the bottom of the middle gasket 5 is fixedly connected to the top of the lower gasket 6. The outer surfaces of the upper gasket 1 and the lower gasket 6 are fixedly connected with gaskets 2. When the cylinder head and the cylinder block are butt-jointed and installed, the upper gasket 1, the middle gasket 5 and the lower gasket 6 can be fully squeezed to fill the gap between the cylinder head and the cylinder block, and the gaskets 2 protrudes outward from the surface of the upper gasket 1 and the lower gasket 6, and then deforms between the cylinder head and the cylinder body to better fill the gap, so as to improve the overall sealing performance; the inner wall of the gasket 2 is provided with two empty grooves 3, and the inner wall of the gasket 2 is provided with a cavity 4 between the two empty grooves 3, so that when the gasket 2 is squeezed, the empty grooves 3 and the cavity 4 are squeezed and deformed, so that the gasket 2 is better deformed, and the gap can be filled more fully.

[0044] See also Figures 5 to 14, so that the upper pad 1, the middle pad 5 and the lower pad 6 can be better deformed and filled in a targeted manner when being squeezed;

[0045] The upper gasket 1, the middle gasket 5 and the lower gasket 6 are stacked with gaskets with three different protruding parts, thereby forming cavities of different positions and sizes between the upper gasket 1, the middle gasket 5 and the lower gasket 6. Therefore, after being installed and fixed between the cylinder head and the cylinder body, the upper gasket 1, the middle gasket 5 and the lower gasket 6 can be fully squeezed to squeeze the internal cavity to produce deformation, and the gaps generated during the installation process can be fully filled, thereby improving the overall sealing.

[0046] See also Figures 1 to 4 In order to prevent the upper gasket 1, the middle gasket 5 and the lower gasket 6 from affecting the vacancy of the cylinder head and the cylinder body after installation, bolt holes 8, water holes 9, oil holes 10, cylinder holes 11, through holes 12 and push rod holes 13 are provided on the surfaces of the upper gasket 1, the middle gasket 5 and the lower gasket 6;

[0047] Cylinder holes 11 are respectively provided on both sides of the upper gasket 1, and a positioning hole 7 is provided on the outer surface of the upper gasket 1 above the cylinder hole 11, which is used for transmission and positioning during the installation of the positioning pin on the cylinder body, and then the device is positioned when it is placed to prevent displacement and ensure the sealing of the device during installation; a bolt hole 8 is provided on the outer surface of the upper gasket 1 below the cylinder hole 11, and when the cylinder head and the cylinder block are installed, the bolt can be inserted into the bolt hole 8 and installed and fixed through the hole, which can not only ensure the stability between the cylinder head and the cylinder block, but also further position the installation position of the device, thereby ensuring the accuracy of the installation position of the device; four water holes 9 are provided on the outer surface of the upper gasket 1 located on the periphery of the cylinder hole 11, which can make the cylinder body water channel and the cylinder head water channel communicate when the cylinder head and the cylinder block are between the cylinder head and the cylinder block, so that the device can fill the gap between the cylinder head and the cylinder block It plays a sealing role; a through hole 12 is opened on the outer surface of the upper gasket 1 between the two cylinder holes 11, which is used to align the combustion chamber valve and other parts to ensure the sealing between the cylinder head and the cylinder block; four oil holes 10 are opened on the outer surface of the upper gasket 1 at the four corners of the through hole 12, which can be used to pressurize the oil in the oil pan through the oil pump, and part of the oil passes through the cylinder block oil channel, so that the oil enters the cylinder head oil channel with the help of the oil hole 10, which can ensure the connection between the cylinder block oil channel and the cylinder head oil channel while sealing the gap between the cylinder head and the cylinder block; a push rod hole 13 is opened below the outer surface of the upper gasket 1, which can drive the intake valve for the lower camshaft, and the push rod needs to transmit force, and the push rod passes through the push rod hole 13, and bolt holes 8, water holes 9, oil holes 10, cylinder holes 11, through holes 12 and push rod holes 13 corresponding to the upper gasket 1 are opened on the surfaces of the middle gasket 5 and the lower gasket 6.

[0048] See also Figure 4 In order to prevent the upper gasket 1, the middle gasket 5 and the lower gasket 6 from causing obstruction to the cylinder head and the cylinder body due to excessive deformation when being squeezed, a retaining ring 14 is provided on the outer wall of the upper gasket 1 and the lower gasket 6;

[0049] The outer walls of the upper gasket 1 and the lower gasket 6 and the surroundings of the bolt holes 8, water holes 9, oil holes 10, cylinder holes 11, through holes 12 and push rod holes 13 are all fixedly connected with retaining rings 14; the retaining rings 14 can block the edge parts of the upper gasket 1, the middle gasket 5 and the lower gasket 6, thereby limiting the degree of deformation of the upper gasket 1, the middle gasket 5 and the lower gasket 6 when they are squeezed to avoid excessive outward extension, thereby ensuring the sealing ability of the device for the gap between the cylinder head and the cylinder block, and at the same time performing the same blocking on the positioning holes 7, the bolt holes 8, the water holes 9, the oil holes 10, the cylinder holes 11 and the through holes 12, thereby ensuring that the device will not affect the normal operation between the cylinder block and the cylinder head.

[0050] See also Figure 3 and Fig.15 In order to improve the overall wear resistance of the upper pad 1, the middle pad 5 and the lower pad 6 during operation, a coating 15 is provided on the outer walls of the upper pad 1, the middle pad 5 and the lower pad 6;

[0051] The coating 15 can cover the surface of the upper pad 1, the middle pad 5 and the lower pad 6, thereby improving the device's ability to resist high temperature, pressure and corrosion;

[0052] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0053] In the utility model, the working steps of the device are as follows:

[0054] First, the device is installed on the surface of the cylinder block with the help of the positioning hole 7 and the bolt hole 9, so that the water hole 9, the oil hole 10, the cylinder hole 11, the through hole 12 and the push rod hole 13 are aligned with the corresponding empty positions between the cylinder block and the cylinder head. The cylinder head and the cylinder block can be docked and fixed, and then the device is squeezed and fixed to fully fill the gap between the cylinder head and the cylinder block.

[0055] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cylinder head sealing gasket, comprising an upper gasket (1), characterized in that: The bottom of the upper sheet gasket (1) is fixedly connected to the middle sheet gasket (5), and the bottom of the middle sheet gasket (5) is fixedly connected to the lower sheet gasket (6). The outer surfaces of the upper sheet gasket (1) and the lower sheet gasket (6) are both fixedly connected to gaskets (2) for auxiliary sealing.

2. A cylinder head sealing gasket according to claim 1, characterized in that: Both sides of the inner wall of the gasket (2) are provided with hollow grooves (3) for providing deformation space, and the inner wall of the gasket (2) is provided with a cavity (4) between the two hollow grooves (3).

3. The cylinder head sealing gasket according to claim 1, characterized in that: Cylinder holes (11) are respectively provided on both sides of the upper sheet gasket (1), and a positioning hole (7) is provided on the outer surface of the upper sheet gasket (1) above the cylinder hole (11).

4. A cylinder head sealing gasket according to claim 2, characterized in that: The outer surface of the upper gasket (1) is provided with a bolt hole (8) located below the cylinder hole (11), and the outer surface of the upper gasket (1) is provided with four water holes (9) located outside the cylinder hole (11).

5. The cylinder head sealing gasket according to claim 3, characterized in that: A through hole (12) is provided on the outer surface of the upper gasket (1) between the two cylinder holes (11), and four oil holes (10) are provided on the outer surface of the upper gasket (1) at the four corners of the through hole (12).

6. The cylinder head sealing gasket according to claim 1, characterized in that: A push rod hole (13) is provided below the outer surface of the upper sheet liner (1).

7. The cylinder head sealing gasket according to claim 1, characterized in that: The edges of the outer surfaces of the upper sheet pad (1), the middle sheet pad (5) and the lower sheet pad (6) are all fixedly connected with retaining rings (14) for blocking.

8. The cylinder head sealing gasket according to claim 1, characterized in that: Both sides of the outer surfaces of the upper sheet liner (1), the middle sheet liner (5) and the lower sheet liner (6) are covered with a coating (15).

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