CN218882380U - Engine cylinder sealing structure - Google Patents

Abstract

The application provides an engine cylinder seal structure, including cylinder cap, organism and set up in the cylinder cap with jar pad between the organism, seal structure still includes the sealing strip, and the sealing strip sets up and states the jar pad, and the mounting groove has been seted up to the part region that the cylinder cap contacted with the sealing strip, and the mounting groove internal fixation is provided with wearing parts. The wear-resistant part is fixed in the mounting groove, so that the structure of the cylinder cover can be simplified, compared with the arrangement mode that various sealing parts and wear-resistant parts are mounted at the position of the cylinder cover in the prior art, the structure of the cylinder cover body is directly changed, the wear-resistant part is arranged on the premise of not changing the shape of the cylinder cover, and the processing cost can be saved; on the other hand, the wear-resistant part can effectively change the material and the structure of the part of the cylinder cover, which is in contact with the sealing belt, the wear resistance of the cylinder cover can be improved, the phenomena of gnawing and abrasion of the cylinder gasket caused by displacement generated by vibration during the operation of the engine are reduced, the service life of the cylinder cover can be prolonged, and the sealing effect can be guaranteed.

Description

Engine cylinder sealing structure

Technical Field

The application relates to the technical field of engines, in particular to an engine cylinder sealing structure.

Background

In order to improve the wear resistance between the cylinder cover and the engine body, a cylinder gasket is often arranged between the cylinder cover and the engine body to reduce the wear between the cylinder cover and the engine body, and the sealing performance between the cylinder cover and the engine body is improved through the arrangement of the cylinder gasket to prevent the normal operation of the engine from being influenced by the leakage of gas.

However, in the operation process of the engine, the cylinder head, the cylinder gasket and the engine body are usually fixed together through bolts, and in order to ensure the light weight design of the engine, the cylinder head usually adopts an aluminum alloy structure, but because the hardness of the aluminum alloy structure is low and the wear resistance is poor, the cylinder gasket usually adopts materials different from the cylinder head in order to ensure the wear resistance and the sealing performance, under the cold and hot shock and the vibration of the engine, the cylinder gasket cannot avoid vibration and slippage with the cylinder head, so that the cylinder gasket can bite the cylinder head with poor hardness to cause tiny grooves on the surface of the cylinder head, gas can easily leak at the grooves, the operation efficiency of the engine can be influenced, and safety accidents such as cracks of the cylinder head can also occur in serious cases.

Thus, the prior art is in need of further improvement and enhancement.

SUMMERY OF THE UTILITY MODEL

The application provides an engine cylinder seal structure to solve among the prior art engine cylinder wear resistance poor, the easy problem of taking place to leak and wearing and tearing.

The technical scheme adopted by the application is as follows:

the application provides an engine cylinder seal structure, including cylinder cap, organism and set up in the cylinder cap with jar pad between the organism, seal structure still includes the sealing strip, and the sealing strip sets up and states the jar pad, and the mounting groove has been seted up to the part region that the cylinder cap contacted with the sealing strip, and the mounting groove internal fixation is provided with wearing parts.

As a preferred embodiment of the application, the cylinder cover and the wear-resistant part are of an integrally formed structure.

As a preferred embodiment of the present application, the mounting groove and the wear part are positioned corresponding to the position of the sealing band, and the width of the wear part is greater than the width of the sealing band.

As a preferred embodiment of the present application, the wear part is provided with a mating surface, the mating surface abuts against the sealing band, and the mating surface is provided with an arc-shaped protrusion.

As a preferred embodiment of the present application, there are mounting gaps between the engine block and the cylinder head and the cylinder gasket, and the sealing tape fills the mounting gaps.

As a preferred embodiment of the present application, the sealing band has a width greater than the width of the gasket.

As a preferred embodiment of the present application, the machine body and/or the cylinder cover is provided with a positioning groove, which is adapted to the shape of the cylinder mat for positioning the position of the cylinder mat.

As a preferred embodiment of the application, the cylinder cover and the wear-resistant part are of a split structure and are fixedly connected with each other.

In a preferred embodiment of the present application, the cylinder head is made of aluminum alloy, and the wear-resistant member is a cast iron ring.

As a preferred embodiment of the application, the wear-resistant part and the cylinder cover are cast and molded.

Due to the adoption of the technical scheme, the technical effect obtained by the application is as follows:

1. according to the cylinder gasket, the sealing strip is arranged at the cylinder gasket, so that the sealing effect of the cylinder gasket on the engine body and the cylinder cover can be enhanced, oil and gas are prevented from flowing out of a gap between the cylinder cover and the engine body, and the wear-resisting effect between the cylinder and the cylinder gasket is enhanced to a certain extent through sealing; in addition, the installation groove is formed in the position where the cylinder cover is in contact with the sealing belt, and the wear-resistant part is fixed in the installation groove, so that the structure of the cylinder cover can be simplified, compared with the arrangement mode that various sealing parts and wear-resistant parts are installed at the position of the cylinder cover in the prior art, the structure of the cylinder cover body is directly changed, the wear-resistant part is arranged on the premise that the shape structure of the cylinder cover is not changed, and the processing cost can be saved; on the other hand, through the setting of wearing parts, can effectual change cylinder cap and the position that the sealing band contacted material and structure, can improve the wear resistance of cylinder cap, reduce the cylinder pad when the engine operation, take place to gnaw the phenomenon of eating and wearing and tearing because of the displacement that vibrations produced, not only can improve the life of cylinder cap, can also ensure sealed effect.

2. As a preferred embodiment of the application, the structure that the cylinder cover and the wear-resistant part are integrally formed is arranged, so that the cylinder cover can be conveniently processed, and the extra labor required for connecting the cylinder cover and the wear-resistant part in the later period is saved; and, this application is corresponding through the position that sets up the mounting groove and the position of sealing strip, can make wearing parts install and take place the abrasion degree position easily between sealing strip and cylinder cap, can further save the processing cost, and ensure wear resistance and sealing performance between the two, in addition, in order to ensure that the sealing strip can concentrate wearing parts department to the wearing and tearing of cylinder cap, this application sets up the width that wearing parts is greater than the sealing strip, can further protect the structure of cylinder cap, reduce the wearing and tearing of cylinder gasket to the cylinder cap, ensure the life of cylinder cap.

3. As a preferred embodiment of the present application, by providing the mounting gaps between the engine body and the cylinder gasket, and between the cylinder cover and the cylinder gasket support, on one hand, the assembly of the sealing belt can be facilitated, and the mounting efficiency can be improved; on the other hand, because the cylinder cover and the engine body have installation errors and machining errors, the problem that the sealing belt is difficult to assemble due to the installation errors and the machining errors can be solved by reserving installation gaps; in addition, the width of the sealing belt is larger than that of the cylinder gasket, so that the mounting gap reserved at the cylinder gasket can be sealed to a certain extent through the sealing belt, and the phenomenon of gas leakage is reduced.

4. As an preferred embodiment of this application, this application is through setting up the constant head tank in organism and cylinder cap department to fix the cylinder gasket through the constant head tank, and for the cylinder gasket provides arrangement space, reduce rocking of cylinder gasket between cylinder cap and organism, and then reduce the wearing and tearing that produce the cylinder cap.

5. As a preferred embodiment of the present application, the wear-resistant member is provided with a matching surface, so that the sealing performance between the cylinder cover and the cylinder gasket is improved by the abutting of the matching surface and the sealing belt, the wear between the cylinder cover and the cylinder gasket is reduced by the matching surface, and the service life of the cylinder cover is prolonged; and, it is protruding to have the arc through setting up fitting surface department to through the convex guide structure of arc, on the one hand can take place when relative sliding between cylinder cap and cylinder gasket, further reduce frictional force through the arc transition, reduce wearing and tearing between the two, and, the bellied setting of arc can be changed into line contact by original surface contact between the two, can reduce the clearance between cylinder cap and the cylinder gasket, and then improve sealed effect, prevent revealing of fluid and gas.

6. As an optimal implementation mode of the application, the cylinder cover is made of aluminum alloy materials, the strength of the cylinder cover can be guaranteed, meanwhile, the overall structure of the cylinder cover is made to be light, the cylinder is convenient to assemble integrally, the abrasion-resistant part is a cast iron ring, the strength of the abrasion-resistant part can be improved, abrasion of a cylinder gasket to the abrasion-resistant part is reduced, the overall structure of the cylinder cover is guaranteed, the service life of the cylinder cover is prolonged, on the other hand, the cast iron structure has a good forming effect, the abrasion-resistant part can be conveniently arranged

In the mounting groove department of cylinder cap to improve the inseparable degree of being connected between cylinder cap and the wearing parts, further prevent the damage of 5 covers of jar.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention, are incorporated in and constitute a part of this specification

The exemplary embodiments and descriptions of the present invention are provided to explain the present application and do not constitute an undue limitation on 0 of the present invention. In the drawings:

FIG. 1 is a schematic diagram of the general structure of a seal structure in one embodiment provided herein;

FIG. 2 is a schematic view of an assembly structure of a wear part according to an embodiment of the present disclosure;

fig. 3 is a partially enlarged view of a sealing structure in an embodiment provided herein.

Wherein:

5, a cylinder cover; 11, mounting a groove; 12-installation clearance; 2-organism; 3-cylinder gasket; 4-sealing tape; 5-wear resistant parts.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

0 in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application

The present application is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

In addition, in the description of the present application, it is to be understood that the terms "bottom", "inner", "outer", and the like are used to indicate

The orientation or positional relationship shown in the drawings is based on the orientation or positional relationship shown in the drawings and is for convenience of describing the present application 5 and simplifying the description, but does not indicate or imply that the referred device or element must have a specific orientation to

The particular orientation is constructed and operative, and thus, not to be construed as limiting the application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

As shown in fig. 1 to 3, the present application provides an engine cylinder sealing structure, which includes a cylinder cover 1, a cylinder body 2, and a gasket 3 disposed between the cylinder cover 1 and the cylinder body 2, and further includes a sealing tape 4, the sealing tape 4 is disposed on the gasket 3, a mounting groove 11 is disposed in a partial region where the cylinder cover 1 contacts the sealing tape 4, and a wear-resistant member 5 is fixedly disposed in the mounting groove 11, wherein, as shown in fig. 1 and 2, a mounting gap 12 is disposed between the cylinder cover 1 and the cylinder body 2, and the mounting gap 12 is filled by the sealing tape 4.

It can be understood that since the structures of the cylinder head 1 and the engine body 2 are formed as a cast member, machining errors and installation errors are inevitable, and the problem that the sealing tape 4 is difficult to assemble due to the installation errors and the machining errors can be reduced by leaving the installation gap 12 for the purpose of assembly problems caused by the machining errors.

In addition, the width of the sealing strip 4 may be set to be larger than the width of the gasket 3, so that not only can the sealing effect of the sealing strip 4 be ensured, but also the mounting gap 12 between the gasket 3 and the cylinder head 1 and the engine body 2 can be sealed by setting the width of the sealing strip 4 to be larger than the width of the gasket 3, and the leakage amount of the fuel gas can be further reduced.

As can be seen from fig. 2 and 3, the top of the cylinder head 2 is covered by the cylinder head 1, the gasket 3 is arranged between the cylinder head 1 and the cylinder head 2 for sealing and filling, and the sealing strip 4 is arranged on one side of the gasket 3, it can be understood that the sealing strip 4 can enhance the sealing effect of the gasket 3 between the cylinder head 2 and the cylinder head 1, prevent the oil and the gas from flowing out from the gap between the cylinder head 1 and the cylinder head 2, and enhance the wear-resisting effect between the cylinder and the gasket 3 to a certain extent through the sealing strip 4.

Further, as shown in fig. 3, a mounting groove 11 is formed in a region of the cylinder head 1, which is in contact with the sealing band 4, and the mounting groove 11 may be a mounting region reserved in advance during the processing of the cylinder head 1, so that the mounting groove 11 is processed during the molding of the cylinder head 1.

The shape structure of the wear-resistant part 5 is not specifically limited in the application, and the wear-resistant part can be an annular columnar structure or a square block-shaped structure, and the shape of the mounting groove 11 is matched with the shape of a wear-resistant part so as to ensure the fixation of the wear-resistant part 5.

0, it should be noted that, the present application will describe the specific arrangement manner of the wear-resistant part 5 by using the following two different embodiments, and during the processing of the sealing structure, any one of the following embodiments may be optionally arranged:

the first embodiment is as follows:

in this embodiment, the structure that cylinder cap 1 and wear-resistant part 5 are integrated into one piece, because cylinder cap 1 itself usually adopts the mode of pouring to come the shaping, that is to say, in carrying out the course of working to cylinder cap 1, can be directly through burying wear-resistant part 5 in advance in cylinder cap 1 to make both integrated into one piece through pouring, improve the joint strength between wear-resistant part 5 and the cylinder cap 1 with this, prevent that wear-resistant part 5 from taking place to drop, and ensure the wear resistance of cylinder cap 1.

Example two:

in this embodiment, the cylinder head 1 and the wear-resistant member 5 are two separate structures, during the processing of the cylinder head 1, the mounting groove 11 is formed on the surface of the cylinder head 1 in advance by means of casting or cutting, and the wear-resistant member 5 is welded to the mounting groove 11, or fixed to the mounting groove 11 by means of interference fit, so that the processing difficulty can be reduced, and after the wear-resistant member 5 is used for a long time by means of interference fit,

directly change wearing parts 5, can save the cost, improve dismouting efficiency.

5, no matter in the first embodiment or the second embodiment, the wear-resistant part 5 can simplify the structure of the cylinder head 1, and compared with the arrangement mode that a plurality of sealing parts and the wear-resistant part 5 are arranged at the cylinder head 1 in the prior art, the structure of the cylinder head 1 body is directly changed, and the wear-resistant part 5 is arranged on the premise of not changing the shape structure of the cylinder head 1, so that the processing cost can be saved; in addition, the wear-resistant part 5 can effectively change the material and the structure of the part of the cylinder cover 1, which is in contact with the sealing belt 4, so that the wear resistance of the cylinder cover 1 can be improved, the phenomena of gnawing and abrasion of the cylinder gasket 3 caused by displacement generated by vibration during the operation of an engine are reduced, the service life of the cylinder cover 1 can be prolonged, and the sealing effect can be ensured.

As a preferred embodiment of the present application, in order to further save the processing cost, the positions of the wear-resistant member 5 and the mounting groove 11 are set corresponding to the position of the sealing band 4, so that the wear-resistant member 5 can be mounted at a position where the wear-resistant member is likely to generate wear between the sealing band 4 and the cylinder head 1, the processing cost can be further saved, and the wear-resistant performance and the sealing performance between the two can be ensured.

Further, to the relation between wearing parts 5 and the sealing band 4, the width that this application set up wearing parts 5 is greater than the sealing band 4's width can ensure that the protection zone of wearing parts 5 covers the sealing band 4's sealed region, not only can improve sealed effect through wearing parts 5, can also ensure that sealing band 4 can concentrate on wearing parts 5 department to the wearing and tearing of cylinder cap 1, further protects the structure of cylinder cap 1, reduces the wearing and tearing of cylinder pad 3 to cylinder cap 1, ensures the life of cylinder cap 1.

Of course, the number of the mounting grooves 11 and the wear-resistant members 5 is not specifically limited in the present application, and may be set as shown in fig. 3, where one mounting groove 11 and one wear-resistant member 5 are provided and located opposite to the sealing band 4 to ensure the sealing effect and the wear-resistant performance; a plurality of mounting grooves 11 and wear-resistant pieces 5 can be provided, and the sizes of the mounting grooves 11 and the wear-resistant pieces 5 can be properly reduced, and the plurality of wear-resistant pieces 5 are not arranged at intervals.

In a preferred embodiment the wear part 5 is provided with a mating surface which abuts the sealing band 4 and which mating surface is provided with an arc-shaped protrusion.

Wherein, the arc arch can be provided with a plurality ofly, and a plurality of arc archs all with the interval arrangement on the fitting surface, on the one hand can take place when sliding relatively between cylinder cap 1 and cylinder gasket 3, further reduce frictional force through the arc transition, reduce wearing and tearing between the two, and, the bellied setting of arc can be changed into line contact by the face contact originally between the two, can reduce the clearance between cylinder cap 1 and the cylinder gasket 3, and then improves sealed effect, prevents revealing of fluid and gas.

As a preferred embodiment of the present application, at least one of the machine body 2 and the cylinder cover 1 is provided with a positioning groove, and the positioning groove is matched with the shape of the cylinder gasket 3 so as to position the position of the cylinder gasket 3.

It should be noted that, the arrangement of constant head tank can fix the cylinder gasket 3 to for the cylinder gasket 3 provides arrangement space, reduce the rocking of cylinder gasket 3 between cylinder cap 1 and organism 2, and then reduce the wearing and tearing that produce cylinder cap 1.

As for the shape of the positioning groove, the positioning groove can be provided with an installation inclined plane, similarly, the edge of the cylinder gasket 3 is provided with a matching inclined plane matched with the installation inclined plane, through the matching between the two inclined planes, the cylinder cover 1 can be conveniently fixed, the friction force between the cylinder gasket 3 and the cylinder cover 1 can be improved through the arrangement of the inclined planes, the relative operation between the cylinder gasket 3 and the cylinder cover 1 is realized, and the abrasion to the cylinder cover 1 is further reduced.

To the material of cylinder cap 1 and wearing parts 5, cylinder cap 1 is the aluminum alloy material, and wearing parts 5 are the cast iron ring, can understand, in order to ensure the lightweight setting of cylinder cap 1, make for the aluminum alloy material through setting up cylinder cap 1, can be when guaranteeing 1 intensity of cylinder cap for the overall structure of cylinder cap 1 more has the lightweight, and then the whole assembly of the cylinder of being convenient for.

And, through setting up wearing parts 5 as the cast iron ring, on the one hand can improve the intensity of wearing parts 5, and then reduce the cylinder gasket 3 to the wearing parts 5 wearing and tearing, ensure cylinder cap 1's overall structure, improve cylinder cap 1's life, on the other hand, because the cast iron structure has good shaping effect, can be convenient for set up wearing parts 5 in cylinder cap 1's mounting groove 11 department to improve the inseparable degree of being connected between cylinder cap 1 and the wearing parts 5, further prevent cylinder cap 1's damage.

It can be understood that the wear-resistant member 5 is made of nickel-rich austenitic cast iron or other wear-resistant materials, and is disposed at a position corresponding to the sealing band 4, so that the wear-resistant member 5 and the gasket 3 can be made of similar materials, and further the damage of the gasket 3 to the cylinder head 1 is reduced, and the wear is concentrated at the wear-resistant member 5 with higher hardness, so as to protect the cylinder head 1.

Where not mentioned in this application, this may be achieved using or taking advantage of existing technology.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims (10)

1. The utility model provides an engine cylinder seal structure, includes cylinder cap, organism and set up in the cylinder cap with jar pad between the organism, its characterized in that, seal structure still includes the sealing strip, the sealing strip set up in jar pad, the cylinder cap with the subregion that the sealing strip contacted has seted up the mounting groove, the mounting groove internal fixation is provided with wearing parts.

2. The engine cylinder seal structure of claim 1, wherein said head and said wear member are of an integrally formed construction.

3. The engine cylinder seal structure of claim 1, wherein the mounting groove and the wear member are positioned to correspond to the position of the seal band, the wear member having a width greater than the width of the seal band.

4. The engine cylinder seal structure according to claim 3, wherein said wear member is provided with a fitting surface which abuts said seal band, and said fitting surface is provided with an arc-shaped projection.

5. An engine cylinder seal structure according to claim 3, wherein said engine block and said cylinder head each have a mounting gap with said head gasket, said seal tape filling said mounting gap.

6. The engine cylinder seal structure of claim 5, wherein said sealing band has a width greater than a width of said head gasket.

7. An engine cylinder seal according to claim 1, characterized in that the engine block and/or the cylinder head is provided with positioning grooves adapted to the shape of the gasket for positioning the position of the gasket.

8. The engine cylinder sealing structure according to claim 1, wherein the cylinder cover and the wear-resistant member are of a split structure and are fixedly connected with each other.

9. An engine cylinder seal according to claim 1, wherein said cylinder head is an aluminum alloy material and said wear member is a cast iron ring.

10. The engine cylinder seal structure of claim 1, wherein said wear member is cast with said head.

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