CN102383966A - Connection structure of cylinder barrel and cylinder cover and connection method - Google Patents
Connection structure of cylinder barrel and cylinder cover and connection method Download PDFInfo
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- CN102383966A CN102383966A CN2011102970009A CN201110297000A CN102383966A CN 102383966 A CN102383966 A CN 102383966A CN 2011102970009 A CN2011102970009 A CN 2011102970009A CN 201110297000 A CN201110297000 A CN 201110297000A CN 102383966 A CN102383966 A CN 102383966A
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- cylinder
- cylinder head
- cylinder barrel
- barrel
- screw thread
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Abstract
The invention provides a connection structure of g a cylinder barrel and a cylinder cover and a connection method. In the connection structure of the cylinder barrel and the cylinder cover, the cylinder barrel and the cylinder cover are in interference fit through sawtooth screw threads. According to the invention, the effect that fuel gas is difficult to leak from a combining position of the cylinder barrel and the cylinder cover because the cylinder barrel and the cylinder cover are not easy to be loosened by the pressure of the high-temperature and high-pressure fuel gas in a cylinder can be achieved.
Description
Technical field
The present invention relates to engine art, especially, relate to a kind of cylinder barrel of motor and the linkage structure of cylinder head, in addition, also relate to the connecting means of a kind of cylinder barrel and cylinder head.
Background technique
In the prior art, piston-engined cylinder barrel combines with method that cylinder head mainly adopts the interference screw thread to add seal gease and seals.Cylinder barrel adopts the regular screw threads tooth form to match with cylinder head.When piston engine is worked, the combination gas blast acting in the cylinder barrel, thereby the combustion gas that produces HTHP.It is loosening that the pressure of the combustion gas of HTHP makes that easily the regular screw threads between cylinder barrel and the cylinder head take place, and simultaneously, high temperature makes seal gease melt easily, and then cause the binding site leakage of combustion gas from cylinder barrel and cylinder head.
Summary of the invention
The object of the invention is to provide the linkage structure and the connecting means of a kind of cylinder barrel and cylinder head; It is loosening to make easily that with the pressure of the combustion gas that solves HTHP regular screw threads between cylinder barrel and the cylinder head take place, and then causes the technical problem of combustion gas from the binding site leakage of cylinder barrel and cylinder head.
For realizing above-mentioned purpose, according to an aspect of invention, the linkage structure of a kind of cylinder barrel and cylinder head is provided, cylinder barrel and cylinder head are through sawtooth pattern screw thread interference fit.
Further, cylinder barrel comprises barrel, and barrel is provided with the first sawtooth pattern screw thread, and cylinder head is provided with the second sawtooth pattern screw thread with the first sawtooth pattern threads engaged.
Further, the fitting surface of the first sawtooth pattern screw thread and the second sawtooth pattern screw thread scribbles seal gease.
Further, the jointing place of the first sawtooth pattern screw thread and the second sawtooth pattern screw thread is perfused with seal gease.
Further, cylinder barrel comprises a nozzle, and cylinder head comprises outlet, and nozzle connects with outlet.
According to another aspect of the present invention; The connecting means of a kind of cylinder barrel and cylinder head is provided, and cylinder barrel and cylinder head have above-mentioned linkage structure, and the connecting means of cylinder barrel and cylinder head in turn includes the following steps: the first step; Cylinder head is heated; Make cylinder head expand,, make cylinder barrel dwindle the cylinder barrel cooling; In second step, be coated with seal gease with the section of cooperation of cylinder head and the first sawtooth pattern screw thread place of cylinder barrel at cylinder barrel; In the 3rd step, the cylinder head that expands heating is threadedly connected to the first sawtooth pattern screw thread of chilled cylinder barrel through second sawtooth pattern of cylinder head; In the 4th step, cylinder head and cylinder barrel after connecting are returned to normal temperature.
Further, before or after second step, carry out following steps: the second sawtooth pattern screw thread place in cylinder head is coated with seal gease.
Further, in the first step, select to carry out one of following steps: earlier cylinder head is heated, again cylinder barrel is cooled off; Or, again cylinder head is heated earlier with the cylinder barrel cooling; Or simultaneously cylinder head is heated respectively and cylinder barrel is cooled off.
The present invention has following beneficial effect:
Through the present invention, it is loosening that the pressure that can reach the combustion gas of HTHP in the cylinder is not easy to make that cylinder barrel and cylinder head take place, and then make combustion gas be not easy the effect of leaking from the binding site of cylinder barrel and cylinder head.
Except top described purpose, feature and advantage, the present invention also has other purpose, feature and advantage.To do further detailed explanation to the present invention with reference to figure below.
Description of drawings
The accompanying drawing that constitutes the application's a part is used to provide further understanding of the present invention, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation that the cylinder barrel of the preferred embodiment of the present invention matches with cylinder head;
Fig. 2 is the structural representation of the cylinder barrel of the preferred embodiment of the present invention; And
Fig. 3 is the structural representation of the cylinder head of the preferred embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
Referring to Fig. 1, piston-engined cylinder comprises cylinder barrel 1 and the cylinder head 3 that matches with cylinder barrel 1.
Please combine referring to Fig. 2, cylinder barrel 1 comprises a nozzle 13 and barrel 11.One section of cooperating with cylinder head 3 of the outer side wall of barrel 11 is provided with the first sawtooth pattern screw thread 111.
Please combine referring to Fig. 3, the internal face of cylinder head 3 is provided with the second sawtooth pattern screw thread 31 that matches with the first sawtooth pattern screw thread 111 of barrel 11.Cylinder head 3 comprises an outlet 33.Outlet 33 connects with the nozzle 13 of cylinder barrel 1.
Please again referring to Fig. 1, cylinder barrel 1 is through the first sawtooth pattern screw thread 111 of barrel 11 settings and the second sawtooth pattern screw thread, 31 interference fit of cylinder head 3 settings.Cylinder barrel 1 scribbles seal gease with the fitting surface of cylinder head 3, and the jointing place of the second sawtooth pattern screw thread 31 of first sawtooth pattern screw thread 111 of cylinder barrel 1 and cylinder head 3 is perfused with seal gease.
Cylinder barrel 1 specifically comprises following several steps with the connecting means of cylinder head 3:
The first step is heated cylinder head 3, makes cylinder head 3 expand; And, make cylinder barrel 1 dwindle with cylinder barrel 1 cooling.In this step, can earlier cylinder head 3 be heated, again with cylinder barrel 1 cooling; Or, again cylinder head 3 is heated earlier with cylinder barrel 1 cooling; Or simultaneously cylinder head 3 is heated respectively and cylinder barrel 1 cooling.Temperature when cylinder head 3 is heated remains on 250 ℃～350 ℃; Temperature when preferably, cylinder head 3 being heated is 300 ℃.Temperature during with cylinder barrel 1 cooling remains on-150 ℃～-30 ℃, and preferably, the temperature during with cylinder barrel 1 cooling is-100 ℃.
In second step, be coated with seal gease with the section of cooperation of cylinder head 3 and the first sawtooth pattern screw thread, 111 places of cylinder barrel 1 at cylinder barrel 1.The second sawtooth pattern screw thread, 31 places in cylinder head 3 before or after this step are coated with seal gease.
In the 3rd step, the cylinder head 3 that expands heating is connected in the first sawtooth pattern screw thread 111 of chilled cylinder barrel 1 through the second sawtooth pattern screw thread 31.
In the 4th step, cylinder head 3 and cylinder barrel 1 after the connection return to normal temperature.Return between cylinder head 3 and the cylinder barrel 1 of normal temperature and be interference fit.Preferably, cylinder barrel 1 is interference fit near the barrel 11 of nozzle 13 and the upper wall that is positioned at the second sawtooth pattern screw thread, 31 tops of cylinder head 3 under temperature difference apparatus.The first sawtooth pattern screw thread 111 of cylinder barrel 1 also is interference fit under temperature difference apparatus with the second sawtooth pattern screw thread 31 of cylinder head 3.That is: cylinder barrel 1 is interference fit with the auxiliary section of cylinder head 3, thereby the effect of obturaging is played in the combustion gas in the cylinder barrel 1.
Sealing configuration of the present invention realizes that the principle of sealing is: when piston engine is worked, and the combination gas blast acting in the cylinder barrel 1, thereby the combustion gas that has produced HTHP.The combustion gas of HTHP has produced very strong pressure and blow cylinder tube 1 and cylinder head 3.Owing to be to adopt the sawtooth pattern screw-thread fit between cylinder barrel 1 and the cylinder head 3, and the pressure that the pressure ratio regular screw threads that can bear of sawtooth pattern screw thread bear is wanted greatly.Therefore, the threaded engagement power of sawtooth pattern screw thread is greater than the threaded engagement power of regular screw threads.The raising of threaded engagement power between cylinder barrel 1 and the cylinder head 3 is difficult for making the thread looseness between cylinder barrel 1 and the cylinder head 3.But because can there be the gap in the error of part processing and the problem of assembling between cylinder barrel 1 and the cylinder head 3 unavoidably.As combustion gas from the nozzle 13 of cylinder barrel 1 when the outlet 33 of cylinder head 3 enters into the gap between cylinder barrel 1 and the cylinder head 3; Even the seal gease of cylinder barrel 1 and cylinder head 3 threaded connection places is because of high temperature failure; Be difficult for loosening sawtooth pattern screw thread and can continue to keep not past external leakage of combustion gas, thereby reach the effect of sealing from the gap between cylinder barrel 1 and the cylinder head 3.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. the linkage structure of cylinder barrel and cylinder head is characterized in that, said cylinder barrel (1) and said cylinder head (3) are through sawtooth pattern screw thread interference fit.
2. the linkage structure of cylinder barrel according to claim 1 and cylinder head; It is characterized in that; Said cylinder barrel (1) comprises barrel (11); Said barrel (11) is provided with the first sawtooth pattern screw thread (111), and said cylinder head (3) is provided with the second sawtooth pattern screw thread (31) that matches with the said first sawtooth pattern screw thread (111).
3. the linkage structure of cylinder barrel according to claim 2 and cylinder head is characterized in that, the said first sawtooth pattern screw thread (111) scribbles seal gease with the fitting surface of the said second sawtooth pattern screw thread (31).
4. according to the linkage structure of claim 2 or 3 described cylinder barrels and cylinder head, the said first sawtooth pattern screw thread (111) is perfused with seal gease with the jointing place of the said second sawtooth pattern screw thread (31).
5. the linkage structure of cylinder barrel according to claim 4 and cylinder head is characterized in that, said cylinder barrel (1) comprises a nozzle (13), and said cylinder head (3) comprises outlet (33), and said nozzle (13) connects with said outlet (33).
6. the connecting means of cylinder barrel and cylinder head; It is characterized in that; Said cylinder barrel (1) has any described linkage structure in the claim 1 to 5 with said cylinder head (3), and said cylinder barrel (1) in turn includes the following steps with the connecting means of cylinder head (3):
The first step is heated said cylinder head (3), makes said cylinder head (3) expand, and with said cylinder barrel (1) cooling, makes said cylinder barrel (1) dwindle;
In second step, locate to be coated with seal gease with the section of cooperation of said cylinder head (3) and the first sawtooth pattern screw thread (111) of said cylinder barrel (1) at said cylinder barrel (1);
In the 3rd step, the said cylinder head (3) that expands heating is connected in the said first sawtooth pattern screw thread (111) of chilled said cylinder barrel (1) through the second sawtooth pattern screw thread (31) of said cylinder head (3);
In the 4th step, said cylinder head (3) and said cylinder barrel (1) after connecting are returned to normal temperature.
7. the connecting means of cylinder barrel according to claim 6 and cylinder head is characterized in that, before or after said second step, carries out following steps:
The second sawtooth pattern screw thread (31) in said cylinder head (3) locates to be coated with said seal gease.
8. according to the connecting means of claim 6 or 7 described cylinder barrels and cylinder head, it is characterized in that, in the said first step, select to carry out one of following steps:
Earlier said cylinder head (3) is heated, more said cylinder barrel (1) is cooled off; Or
With said cylinder barrel (1) cooling, more said cylinder head (3) is heated earlier; Or
Difference is heated said cylinder head (3) simultaneously and said cylinder barrel (1) is cooled off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102970009A CN102383966A (en) | 2011-09-30 | 2011-09-30 | Connection structure of cylinder barrel and cylinder cover and connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102970009A CN102383966A (en) | 2011-09-30 | 2011-09-30 | Connection structure of cylinder barrel and cylinder cover and connection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102383966A true CN102383966A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102970009A Pending CN102383966A (en) | 2011-09-30 | 2011-09-30 | Connection structure of cylinder barrel and cylinder cover and connection method |
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| Country | Link |
|---|---|
| CN (1) | CN102383966A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1951948A (en) * | 1931-02-23 | 1934-03-20 | Pobjoy Douglas Rudolf | Joint or attachment of parts in engines and the like |
| US2144928A (en) * | 1935-04-19 | 1939-01-24 | United Aircraft Corp | Method of making internal combustion engines |
| US5768780A (en) * | 1993-10-18 | 1998-06-23 | Hobson; Dale Graham | Sealing of cylinder heads |
| US5970941A (en) * | 1998-06-16 | 1999-10-26 | Caterpillar Inc. | Cylinder liner connecting arrangement and method |
| CN202300700U (en) * | 2011-09-30 | 2012-07-04 | 中国南方航空工业(集团)有限公司 | Connection structure of cylinder barrel and cylinder cap |
-
2011
- 2011-09-30 CN CN2011102970009A patent/CN102383966A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1951948A (en) * | 1931-02-23 | 1934-03-20 | Pobjoy Douglas Rudolf | Joint or attachment of parts in engines and the like |
| US2144928A (en) * | 1935-04-19 | 1939-01-24 | United Aircraft Corp | Method of making internal combustion engines |
| US5768780A (en) * | 1993-10-18 | 1998-06-23 | Hobson; Dale Graham | Sealing of cylinder heads |
| US5970941A (en) * | 1998-06-16 | 1999-10-26 | Caterpillar Inc. | Cylinder liner connecting arrangement and method |
| CN202300700U (en) * | 2011-09-30 | 2012-07-04 | 中国南方航空工业(集团)有限公司 | Connection structure of cylinder barrel and cylinder cap |
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Application publication date: 20120321 |