CN202228199U - Cylinder body undercut groove structure for cylinder sleeve support - Google Patents
Cylinder body undercut groove structure for cylinder sleeve support Download PDFInfo
- Publication number
- CN202228199U CN202228199U CN2011203527831U CN201120352783U CN202228199U CN 202228199 U CN202228199 U CN 202228199U CN 2011203527831 U CN2011203527831 U CN 2011203527831U CN 201120352783 U CN201120352783 U CN 201120352783U CN 202228199 U CN202228199 U CN 202228199U
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- Prior art keywords
- cylinder
- cut groove
- groove
- cylinder block
- internal surface
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- Expired - Lifetime
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- 230000007704 transition Effects 0.000 claims abstract description 11
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 206010016256 fatigue Diseases 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model provides a cylinder block undercut structure for cylinder liner supporting, includes cylinder block (1), cylinder block (1) upper portion has seted up cylinder liner supporting surface (2) and jar hole internal surface (3), the transition department that just lies in between cylinder block top cylinder liner supporting surface (2) and jar hole internal surface (3) on cylinder block (1) is provided with inclined plane cut groove (4) and convex cut groove (5), and the upper end of inclined plane cut groove (4) links to each other with the lower extreme of jar hole internal surface (3), and the lower extreme of inclined plane cut groove (4) is tangent with convex cut groove (5), the utility model discloses be provided with inclined plane cut groove and convex cut groove at the transition department between jar hole internal surface and cylinder block top cylinder liner supporting surface, inclined plane cut groove is tangent with convex cut groove for cylinder liner convex shoulder chamfer falls in convex cut groove (5), effectively with stress transfer, increase cylinder block supporting surface and the bearing surface of cylinder liner convex shoulder, the strength and the rigidity of the cylinder body are improved, the increase of the cylinder center distance is controlled, meanwhile, the deformation of the cylinder sleeve is favorably reduced, and the service life of the engine is prolonged.
Description
Technical field
The utility model relates to a kind of undercut groove structure, relates in particular to a kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting.
Background technique
Adopt the internal-combustion engine of wet liner at present, the axially locating of wet sleeve adopts the ring-shaped bearing convex shoulder, and its orientation type is divided into: top-supported, middle part supporting and lower support.The supporting shoulder of cylinder liner is when the top of cylinder sleeve, because processing is simple, and easy accessibility, and obtained extensive use.For the top-supported cylinder sleeve, its upper end compresses sealing with head gasket, and cylinder flange bears pressure stress and flexural stress, and correspondingly same pressure stress and flexural stress are also being born in the supporting at cylinder body top.
Available engine cylinder body supporting root is a knuckle 6, and referring to Fig. 1, Fig. 2, this knuckle 6 is positioned at the binding site of cylinder internal surface of hole 3 and cylinder body top-supported face 2.This transition structure can meet the demands for the motor of low pressure of explosion, but improving constantly along with the internal-combustion engine reinforcing degree; Especially detonation pressure is brought up to 200bar when above, and the fillet stress concentration phenomenon of cylinder body supporting root is obvious especially, when bearing repeatedly alternating stress and cyclic stress; Fatigue safety coefficient is lower; The risk of distortion and cracking is arranged, understand the distortion directly influence cylinder sleeve like this, cause gas leakage, scurry oil, the generation of problems such as leakage of oil and gum deposit; Thereby the increase barrel wear, even make the diesel engine cisco unity malfunction.
Summary of the invention
The purpose of the utility model is to receive stress bigger to the knuckle place that has cylinder sleeve support position, cylinder block top now; Easy fatigue causes the defective and the not enough problem of cylinder-liner distortion; Provide a kind of simple in structure; Effectively stress transfer is avoided the concentrated a kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting that causes fatigability to damage of stress.
For realizing above-mentioned purpose; The technical solution of the utility model is: a kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting; Comprise cylinder block, offer cylinder body top-supported face and cylinder internal surface of hole on the cylinder block, on the said cylinder body and the transition position between cylinder body top-supported face and cylinder internal surface of hole be provided with that the inclined-plane cuts groove and circular arc is cut groove; The inclined-plane cuts the upper end of groove and the lower ends of cylinder internal surface of hole, and it is tangent that lower end and the circular arc that the inclined-plane cuts groove is cut groove.
It is 15 degree-45 degree that said inclined-plane cuts the angle that groove and cylinder internal surface of hole be.
The convex shoulder chamfering of said cylinder sleeve drops on circular arc and cuts in the groove of groove.
The beneficial effect of the utility model is:
1. the transition position of the utility model between cylinder internal surface of hole and cylinder body top-supported face is provided with that the inclined-plane cuts groove and circular arc is cut groove; Effective supporting surface of cylinder sleeve is strengthened; The control cylinder core distance increases; Cylinder sleeve convex shoulder chamfering can drop on circular arc and cut in the groove and can improve the fatigue safety coefficient at transition structure place effectively with stress transfer, thereby effectively improves the strength and stiffness of cylinder body.
2. the utility model is simple in structure; The material of avoiding bringing inadequately owing to cylinder body top local strength improves, and has reduced cost, when improving cylinder body top partial structurtes fatigue safety coefficient; Help reducing the distortion of cylinder sleeve, thereby prolong the working life of motor.
Description of drawings
Fig. 1 is a supporting root fillet structural representation in the existing technology.
Fig. 2 is the erection drawing of cylinder block 1 in the existing technology, cylinder sleeve 7.
Fig. 3 is the structural representation of the utility model.
Fig. 4 is the erection drawing of the utility model cylinder block 1, cylinder sleeve 7.
Among the figure: cylinder block 1, cylinder body top-supported face 2, cylinder internal surface of hole 3, inclined-plane cut groove 4, and circular arc is cut groove 5, knuckle 6, cylinder sleeve 7.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is done further to describe in detail:
Referring to Fig. 3, Fig. 4; A kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting of the utility model; Comprise cylinder block 1, offer cylinder body top-supported face 2 and cylinder internal surface of hole 3 on the cylinder block 1, on the said cylinder body 1 and the transition position between cylinder body top-supported face 2 and cylinder internal surface of hole 3 be provided with that the inclined-plane cuts groove 4 and circular arc is cut groove 5; The inclined-plane cuts the upper end of groove 4 and the lower ends of cylinder internal surface of hole 3, and it is tangent that lower end and the circular arc that the inclined-plane cuts groove 4 is cut groove 5.
It is 15 degree-45 degree with the angle that cylinder internal surface of hole 3 is that said inclined-plane cuts groove 4.
The convex shoulder chamfering of said cylinder sleeve 7 drops on circular arc and cuts in the groove of groove 5.
Offer cylinder body top-supported face 2 and cylinder internal surface of hole 3 on the cylinder block 1; On the cylinder body 1 and the transition position between cylinder body top-supported face 2 and cylinder internal surface of hole 3 be provided with the inclined-plane and cut groove 4 and cut groove 5 with circular arc; The inclined-plane cuts the upper end of groove 4 and the lower ends of cylinder internal surface of hole 3; It is tangent that lower end and the circular arc that the inclined-plane cuts groove 4 is cut groove 5, and to make the inclined-plane cut groove 4 be 15 degree-45 degree with the angle that cylinder internal surface of hole 3 is.The convex shoulder chamfering of cylinder sleeve 7 can drop on circular arc and cut in the groove of groove 5; Changed round-corner transition structure between the cylinder body top-supported face 2 and cylinder internal surface of hole 3 in the past; Effectively, increased the pressure-bearing surface of cylinder body supporting, reduced the distortion and the cracking risk of cylinder body top-supported transition position with the cylinder sleeve convex shoulder with stress transfer; Help reducing the distortion of cylinder sleeve simultaneously, thereby prolong the working life of motor.
Claims (3)
1. one kind is used for the cylinder block undercut groove structure that cylinder sleeve supports; Comprise cylinder block (1); Offer cylinder body top-supported face (2) and cylinder internal surface of hole (3) on the cylinder block (1); It is characterized in that: said cylinder body (1) is gone up and is positioned at transition position between cylinder body top-supported face (2) and the cylinder internal surface of hole (3) and is provided with that the inclined-plane cuts groove (4) and circular arc is cut groove (5); The inclined-plane cuts the upper end of groove (4) and the lower ends of cylinder internal surface of hole (3), and it is tangent that lower end and the circular arc that the inclined-plane cuts groove (4) is cut groove (5).
2. a kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting according to claim 1 is characterized in that: it is 15 degree-45 degree with the angle that cylinder internal surface of hole (3) is that said inclined-plane cuts groove (4).
3. a kind of cylinder block undercut groove structure that is used for the cylinder sleeve supporting according to claim 1, it is characterized in that: the convex shoulder chamfering of said cylinder sleeve (7) drops on circular arc and cuts in the groove of groove (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203527831U CN202228199U (en) | 2011-09-20 | 2011-09-20 | Cylinder body undercut groove structure for cylinder sleeve support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203527831U CN202228199U (en) | 2011-09-20 | 2011-09-20 | Cylinder body undercut groove structure for cylinder sleeve support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202228199U true CN202228199U (en) | 2012-05-23 |
Family
ID=46078787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203527831U Expired - Lifetime CN202228199U (en) | 2011-09-20 | 2011-09-20 | Cylinder body undercut groove structure for cylinder sleeve support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202228199U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104937248A (en) * | 2013-02-05 | 2015-09-23 | 康明斯知识产权公司 | Engine cylinder mid-stop |
-
2011
- 2011-09-20 CN CN2011203527831U patent/CN202228199U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104937248A (en) * | 2013-02-05 | 2015-09-23 | 康明斯知识产权公司 | Engine cylinder mid-stop |
| CN104937248B (en) * | 2013-02-05 | 2016-11-23 | 康明斯知识产权公司 | Explosive motor and the method being used for reducing the abrasion in explosive motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: DONGFENG COMMERCIAL VEHICLE CO., LTD. Free format text: FORMER OWNER: DONGFENG AUTOMOBILE CO., LTD. Effective date: 20130904 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 430056 WUHAN, HUBEI PROVINCE TO: 442001 SHIYAN, HUBEI PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20130904 Address after: 442001 Shiyan City, Hubei province city Zhangwan District Road No. 2 Patentee after: DONGFENG TRUCKS Co.,Ltd. Address before: 430056 Dongfeng Road, Wuhan Economic Development Zone, Hanyang District, Hubei, China, No. 10, No. Patentee before: DONGFENG MOTER Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120523 |
|
| CX01 | Expiry of patent term |