CN103397948B - Cylinder cover bolt installation structure - Google Patents
Cylinder cover bolt installation structure Download PDFInfo
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- CN103397948B CN103397948B CN201310271711.8A CN201310271711A CN103397948B CN 103397948 B CN103397948 B CN 103397948B CN 201310271711 A CN201310271711 A CN 201310271711A CN 103397948 B CN103397948 B CN 103397948B
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- cylinder head
- cylinder
- head bolt
- cushion block
- bolt
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Abstract
The invention discloses a kind of cylinder cover bolt installation structure.This cylinder cover bolt installation structure comprises: cylinder head; Cylinder head bolt, is fixed on cylinder through cylinder head and forms firing chamber; Cylinder head bolt cushion block, is laid between cylinder head and cylinder head bolt.This cylinder cover bolt installation structure advantages of simple, by setting up cylinder head bolt cushion block between cylinder head bolt and top surface of cylinder cover, to reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevents top surface of cylinder cover by conquassation.Meanwhile, the high-strength material manufacture of cylinder head bolt cushion block, makes cylinder head bolt cushion block directly can bear the higher pressure of cylinder head bolt and not by conquassation, makes again top surface of cylinder cover can not by conquassation simultaneously.
Description
Technical field
The present invention relates to engine art, particularly a kind of cylinder cover bolt installation structure.
Background technique
Engine cylinder cap is the important feature assembly of explosive motor, is used for closed cylinder form firing chamber.Overhead valve engine cylinder head, except cooling jacket, also has valve gear, air inlet and exhaust passage etc.Cylinder head effect: cylinder cap belongs to distribution device at internal-combustion engine, is mainly used for closed cylinder top, forming firing chamber.And the support of air inlet-outlet pipe is also had as camshaft and pitman arm shaft.Mainly air is drawn onto cylinder interior, burning mixture lighted by spark plug, and drive piston acting, waste gas is discharged from outlet pipe.
In the motor mechanisms of " cylinder one covers ", each cylinder head of motor establishes a cylinder head, and be fixed on cylinder and form firing chamber through cylinder head by cylinder head bolt straight down, the flanged surface of cylinder head bolt is tightly crimped in top surface of cylinder cover.
But limit by engine arrangement, too large (less) that cause the flanged surface of cylinder head bolt not design, make the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover excessive, in addition, the material hardness of cylinder head bolt is greater than cylinder head usually, therefore often causes top surface of cylinder cover by conquassation.
Summary of the invention
The present invention is to overcome defect in above-mentioned prior art, provides a kind of simple and reasonable, can reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevent top surface of cylinder cover by the cylinder cover bolt installation structure of conquassation.
For achieving the above object, according to the invention provides a kind of cylinder cover bolt installation structure, comprising:
Cylinder head;
Cylinder head bolt, is fixed on cylinder through cylinder head and forms firing chamber;
Cylinder head bolt cushion block, is laid between cylinder head and cylinder head bolt.
In technique scheme, the shape of cylinder head bolt cushion block and the end face adaptation of cylinder head.
In technique scheme, have in the middle part of cylinder head bolt cushion block and allow bit space.
In technique scheme, cylinder head bolt cushion block ring wall offers the cylinder head bolt mounting hole corresponding with top surface of cylinder cover.
In technique scheme, cylinder head bolt cushion block selects the high-strength material higher than cylinder head material hardness.
In technique scheme, cylinder head bolt cushion block selects 42CrMo steel.
Compared with prior art, the present invention has following beneficial effect: this cylinder cover bolt installation structure advantages of simple, by setting up cylinder head bolt cushion block between cylinder head bolt and top surface of cylinder cover, to reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevent top surface of cylinder cover by conquassation.Meanwhile, the high-strength material manufacture of cylinder head bolt cushion block, makes cylinder head bolt cushion block directly can bear the higher pressure of cylinder head bolt and not by conquassation, makes again top surface of cylinder cover can not by conquassation simultaneously.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of cylinder cover bolt installation structure of the present invention;
Fig. 2 is the cylinder head bolt cushion block schematic diagram of cylinder cover bolt installation structure of the present invention;
Accompanying drawing illustrates:
1-cylinder head, 2-cylinder head bolt, 3-cylinder head bolt cushion block, 31-cylinder head bolt mounting hole.
Embodiment
Below in conjunction with accompanying drawing, a specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention not by the restriction of embodiment.It will be appreciated that, mentioned in following mode of execution of the present invention " on ", D score, "left", "right", " front " and " reverse side " all with the direction shown in each figure for benchmark, these words being used for limiting direction are only used to be convenient to illustrate, do not represent the restriction to the concrete technological scheme of the present invention.
Cylinder cover bolt installation structure advantages of simple of the present invention, by setting up cylinder head bolt cushion block between cylinder head bolt and top surface of cylinder cover, to reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevents top surface of cylinder cover by conquassation.Meanwhile, the high-strength material manufacture of cylinder head bolt cushion block, makes cylinder head bolt cushion block directly can bear the higher pressure of cylinder head bolt and not by conquassation, makes again top surface of cylinder cover can not by conquassation simultaneously.
Be described through citing but unrestriced mode describes the disclosure in detail below, should be understood that various aspect of the present disclosure can by independent realization or the realization be combined with other aspects.This specification clearly enables those skilled in the art to manufacture and uses us to believe for new and non-obvious improvement, describe the application of some embodiments, alternative, modification, alternative and system, comprise the current best mode being considered to perform the inventive principle described in this specification.When describing element or feature and/or embodiment, be intended to represent that to have in element or feature one or more titled with " one " " one " " being somebody's turn to do " and " described ".Term " comprises " " comprising " and " having " is intended to be comprising property, and represents also have extra element or feature beyond those specifically described elements or feature.
As shown in Figure 1, the engine cylinder cap that this cylinder cover bolt installation structure relates generally to " cylinder one covers " is fixed on cylinder through cylinder head straight down by cylinder head bolt and forms firing chamber, the flanged surface of cylinder head bolt is tightly crimped on the mounting structure in top surface of cylinder cover, its concrete structure comprises: cylinder head 1 and cylinder head bolt 2, and the cylinder head bolt cushion block 3 be laid between cylinder head 1 and cylinder head bolt 2, cylinder head 1 is fixed on cylinder through cylinder head 1 straight down by cylinder head bolt 2 and forms firing chamber, and cylinder head bolt cushion block 3 is laid between cylinder head 1 and cylinder head bolt 2, make cylinder head bolt 2 flanged surface be originally tightly crimped on cylinder head 1 end face, be crimped onto on cylinder head bolt cushion block 3, to reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevent top surface of cylinder cover by conquassation.Meanwhile, the high-strength material manufacture of cylinder head bolt cushion block, makes cylinder head bolt cushion block directly can bear the higher pressure of cylinder head bolt and not by conquassation, makes again top surface of cylinder cover can not by conquassation simultaneously.
Cylinder head 1 is the important feature assembly of explosive motor, is used for closed cylinder form firing chamber.Overhead valve engine cylinder head, except cooling jacket, also has valve gear, air inlet and exhaust passage etc.Cylinder head effect: cylinder cap belongs to distribution device at internal-combustion engine, is mainly used for closed cylinder top, forming firing chamber.And the support of air inlet-outlet pipe is also had as camshaft and pitman arm shaft.Mainly air is drawn onto cylinder interior, burning mixture lighted by spark plug, and drive piston acting, waste gas is discharged from outlet pipe.Shown in Fig. 1 is two cylinder head side by side in the motor mechanisms of " cylinder one covers ", and each cylinder head of motor establishes a cylinder head.
As shown in Figure 2, the shape of cylinder head bolt cushion block 3 and the end face adaptation of cylinder head 1 are the upwards extension of its end face.The middle part of cylinder head bolt cushion block 3 is the bit space that allows of valve gear, air inlet and exhaust passage etc., and ring wall offers the cylinder head bolt mounting hole 31 corresponding with cylinder head 1 end face and other mounting hole.Cylinder head bolt cushion block 3 selects high-strength material (can be higher than the hardness of cylinder head 1 material), such as 42CrMo steel, it belongs to Ultrastrength Steel, there is high strength and toughness, hardenability is also better, without obvious temper brittleness, have higher fatigue limit and anti-repeat impact ability after quenching with Subsequent tempering, low-temperature impact toughness is good.The high-strength material that cylinder head bolt cushion block 3 is selected can bear the pressure of cylinder head bolt, by increasing cylinder head bolt cushion block, making reduction act on the pressure of top surface of cylinder cover, eliminating the phenomenon of conquassation top surface of cylinder cover because cylinder head bolt pressure is excessive.
Cylinder head bolt 2 is fixed on cylinder through cylinder head 1 straight down and forms firing chamber, after cylinder head bolt 2 assembles, its relatively little flanged surface is directly pressed on cylinder head bolt cushion block 3, by cylinder head bolt cushion block 3 compression cylinder lid 1 indirectly, reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevent top surface of cylinder cover by conquassation.
To sum up, this cylinder cover bolt installation structure advantages of simple, by setting up cylinder head bolt cushion block between cylinder head bolt and top surface of cylinder cover, to reduce the contact stress of cylinder head bolt flanged surface and top surface of cylinder cover, prevents top surface of cylinder cover by conquassation.Meanwhile, the high-strength material manufacture of cylinder head bolt cushion block, makes cylinder head bolt cushion block directly can bear the higher pressure of cylinder head bolt and not by conquassation, makes again top surface of cylinder cover can not by conquassation simultaneously.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (3)
1. a cylinder cover bolt installation structure, is characterized in that, comprising:
Cylinder head;
Cylinder head bolt, is fixed on cylinder through cylinder head and forms firing chamber;
Cylinder head bolt cushion block, is laid between cylinder head and cylinder head bolt;
The shape of described cylinder head bolt cushion block and the end face adaptation of cylinder head; Have in the middle part of described cylinder head bolt cushion block and allow bit space; Described cylinder head bolt cushion block ring wall offers the cylinder head bolt mounting hole corresponding with top surface of cylinder cover.
2. cylinder cover bolt installation structure according to claim 1, is characterized in that: described cylinder head bolt cushion block selects the high-strength material higher than cylinder head material hardness.
3. cylinder cover bolt installation structure according to claim 2, is characterized in that: described cylinder head bolt cushion block selects 42CrMo steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310271711.8A CN103397948B (en) | 2013-07-01 | 2013-07-01 | Cylinder cover bolt installation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310271711.8A CN103397948B (en) | 2013-07-01 | 2013-07-01 | Cylinder cover bolt installation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103397948A CN103397948A (en) | 2013-11-20 |
| CN103397948B true CN103397948B (en) | 2015-08-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310271711.8A Active CN103397948B (en) | 2013-07-01 | 2013-07-01 | Cylinder cover bolt installation structure |
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| CN (1) | CN103397948B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104074835B (en) * | 2014-07-07 | 2016-02-24 | 广西玉柴机器股份有限公司 | Cylinder head bolt clamping arrangement |
| CN114320646B (en) * | 2021-12-31 | 2023-01-24 | 东风汽车集团股份有限公司 | Cylinder cover assembly and assembly method thereof, and thermodynamic single cylinder engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586512A (en) * | 2008-05-21 | 2009-11-25 | 本田技研工业株式会社 | Cylinder cap structure in engine |
| CN201424983Y (en) * | 2009-05-08 | 2010-03-17 | 广西玉柴机器股份有限公司 | Cylinder cover screw bolt fastening structure |
| CN201483446U (en) * | 2009-06-01 | 2010-05-26 | 奇瑞汽车股份有限公司 | Press-installing tool for bolt gasket of engine cylinder cover |
| CN101949335A (en) * | 2010-10-19 | 2011-01-19 | 无锡开普动力有限公司 | Separated cylinder jacket connection structure |
| CN202402151U (en) * | 2011-12-30 | 2012-08-29 | 浙江派尼尔机电有限公司 | 40-horsepower cylinder |
| CN203335255U (en) * | 2013-07-01 | 2013-12-11 | 广西玉柴机器股份有限公司 | Cylinder cover bolt installation structure |
-
2013
- 2013-07-01 CN CN201310271711.8A patent/CN103397948B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101586512A (en) * | 2008-05-21 | 2009-11-25 | 本田技研工业株式会社 | Cylinder cap structure in engine |
| CN201424983Y (en) * | 2009-05-08 | 2010-03-17 | 广西玉柴机器股份有限公司 | Cylinder cover screw bolt fastening structure |
| CN201483446U (en) * | 2009-06-01 | 2010-05-26 | 奇瑞汽车股份有限公司 | Press-installing tool for bolt gasket of engine cylinder cover |
| CN101949335A (en) * | 2010-10-19 | 2011-01-19 | 无锡开普动力有限公司 | Separated cylinder jacket connection structure |
| CN202402151U (en) * | 2011-12-30 | 2012-08-29 | 浙江派尼尔机电有限公司 | 40-horsepower cylinder |
| CN203335255U (en) * | 2013-07-01 | 2013-12-11 | 广西玉柴机器股份有限公司 | Cylinder cover bolt installation structure |
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| Publication number | Publication date |
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| CN103397948A (en) | 2013-11-20 |
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