CN103850822B - Crankcase and engine - Google Patents
Crankcase and engine Download PDFInfo
- Publication number
- CN103850822B CN103850822B CN201410091195.5A CN201410091195A CN103850822B CN 103850822 B CN103850822 B CN 103850822B CN 201410091195 A CN201410091195 A CN 201410091195A CN 103850822 B CN103850822 B CN 103850822B
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- CN
- China
- Prior art keywords
- crankshaft
- crankcase
- thrust
- bearing thrust
- thrust gear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Sliding-Contact Bearings (AREA)
Abstract
The present invention provides a kind of crankcase and engine, crankcase includes cabinet, cabinet wall has that base bearing thrust is kept off and the auxiliary bearing thrust gear positioned at base bearing thrust gear two sides, the side of base bearing thrust gear have for still ensuring that the first surface between crankcase and crankshaft with gap when the thrust pad wear after；The side of auxiliary bearing thrust gear has for still ensuring that second curved surface between crankcase and crankshaft with gap when the thrust pad wear after.When braking, when clutch shifter pushes the thrust of release bearing compression clutch disk that crankshaft is caused axial float occur, the gap between crankshaft balance weight and crankcase base bearing thrust gear is ensured by above-mentioned first surface, the gap between the main bearing journal shaft shoulder and crankcase is ensured by the second curved surface, to avoid the collision of crankshaft and crankcase, solves Abnormal Sound when engine idling operation, and then the abrasion of crankshaft and crankcase is alleviated, improve the durability and service life of crankcase.
Description
Technical field
The present invention relates to automobile engine technology more particularly to a kind of crankcases and engine.
Background technique
The crankshaft 3 that engine includes at least cylinder body 10 and is located in cylinder body 10, crankcase 1 is a part of cylinder body 10, is used
In built-up crankshaft 3, crankshaft 3 is by main shaft 30 and the balance weight being located on main shaft 30 31 and the trunnion shaft shoulder 32, the trunnion shaft shoulder 32
Positioned at 30 both ends of crankshaft, balance weight 31 is located at 30 middle part of main shaft, i.e., between the trunnion shaft shoulder 32,1 inner wall of crankcase has multipair
Radial lugs, for installing bearing cap 40 in each pair of radial lugs, between balance weight 31 and balance weight 31 and the trunnion shaft shoulder
Main bearing shell 50 is mounted on main shaft 30 between 32, main bearing shell 50 is fixed on crankcase 1 by bearing cap 40, wherein being used for
The radial lugs for installing main bearing shell between balance weight are main bearing thrust gear 11, for installing balance weight 31 and the trunnion shaft shoulder 32
Between main bearing shell 50 and radial lugs for installing the main bearing shell 50 between the two trunnion shaft shoulders 32 it is equal supplemented by bearing stop
Push and block 12, as shown in Figure 1, due to the inertia of automobile, shift fork pushes pushing away for release bearing compression clutch compressing disc when stepping on clutch
Power will lead to crankshaft and axial float occurs, and crankshaft is caused to collide with crankcase, and when engine idling operation has more bored
" when, when " sound, anxious acceleration is more obvious, will lead to engine crankshaft, the unnecessary abrasion of crankcase appearance, usually in crankshaft
Thrust plate 60 is installed between balance weight 31 and crankcase base bearing thrust gear 11 additional to limit the axial float of crankshaft 3.
But but as the increase for using the time, thrust plate 60 will appear abrasion, lead to 3 axial float of crankshaft, referring to
When Fig. 2-6, Fig. 2 are that thrust plate is not worn, the main bearing journal shaft shoulder 32 and auxiliary bearing thrust keep off the amplification knot between 12 sides
Structure schematic diagram, the position of dotted line position 12 sides of auxiliary bearing thrust gear when being crankshaft play；Fig. 3 is crankshaft balance weight 31 and main shaft
The enlarged structure schematic diagram that thrust is kept off between 11 sides is held, base bearing thrust keeps off the position of 11 sides when dotted line position is crankshaft play
It sets；When Fig. 5 is 60 serious wear of thrust plate, the main bearing journal shaft shoulder 32 and auxiliary bearing thrust keep off the enlarged structure between 12 sides
Schematic diagram, base bearing thrust keeps off the position of 11 sides when dotted line position is crankshaft play；Fig. 6 is crankshaft balance weight 31 and base bearing
Thrust keeps off the enlarged structure schematic diagram between 11 sides, and base bearing thrust keeps off the position of 11 sides when dotted line position is crankshaft play
It sets；By contrast it can be found that when 60 serious wear of thrust plate, crankshaft balance weight 31 and the trunnion shaft shoulder 32 are axially altered therewith
It is dynamic to collide crankcase 1, and as the abrasion of thrust plate 60 can be all the more serious.
Summary of the invention
The present invention provides a kind of crankcase and engine is avoided for overcoming defect in the prior art because of thrust plate
Abrasion causes crankshaft axle box play and crankcase to collide, and improves the service life of crankcase.
The present invention provides a kind of crankcase, including cabinet, the cabinet wall there is at least one base bearing thrust to keep off with
And the auxiliary bearing thrust gear positioned at all base bearing thrust gear two sides, the side of the base bearing thrust gear have for working as
The first surface between crankcase and crankshaft with gap is still ensured that after thrust pad wear；The side of the auxiliary bearing thrust gear
With for still ensuring that the second curved surface between crankcase and crankshaft with gap when the thrust pad wear after.
Wherein, the first surface and/or the second curved surface are in arc surfaced.
Further, the base bearing thrust keeps off the side adjacent with the crankshaft balance weight and all has first song
Face.
Further, the auxiliary bearing thrust keeps off the side adjacent with the main bearing journal shaft shoulder and all has described second
Curved surface.
Crankcase provided by the invention, when braking, clutch shifter push the thrust of release bearing compression clutch disk
When crankshaft being caused axial float occur, ensure that crankshaft balance weight and the thrust of crankcase base bearing keep off it by above-mentioned first surface
Between gap, the gap between the main bearing journal shaft shoulder and crankcase is ensured by the second curved surface, to avoid crankshaft and bent
The collision of axle box, had when solving engine idling operation it is more bored " when, when " Abnormal Sound, and then alleviate crankshaft and crankshaft
The abrasion of case improves the durability and service life of crankcase.
The present invention also provides a kind of engines, including cylinder body and setting to use on the intracorporal crankshaft of the cylinder, the cylinder body
It is crankcase in the part for assembling the crankshaft, the crankcase is above-mentioned crankcase, the main shaft on the crankshaft chamber interior wall
Thrust gear is held between two crankshaft balance weight adjacent on the crankshaft, the auxiliary bearing thrust gear of the crankshaft chamber interior wall closes on institute
State the main bearing journal shaft shoulder setting at both ends on crankshaft.
Further, the first surface is identical as the thrust surface shape in the crankshaft balance weight.
Further, second curved surface is identical as the thrust surface shape of the main bearing journal shaft shoulder.
Engine provided by the invention, since the crankcase on cylinder body uses the crankcase of above structure, when braking,
It is bent by above-mentioned first when clutch shifter pushes the thrust of release bearing compression clutch disk that crankshaft is caused axial float occur
Face ensures the gap between crankshaft balance weight and crankcase base bearing thrust gear, ensures main bearing journal by the second curved surface
Gap between the shaft shoulder and crankcase has when solving engine idling operation to avoid the collision of crankshaft and crankcase
More bored " when, when " Abnormal Sound, and then alleviate the abrasion of crankshaft and cylinder body, improve the durability of engine and use the longevity
Life.
Detailed description of the invention
Fig. 1 is schematic diagram of the assembling structure in the non-state of wear of thrust plate of prior art crankcase and crankshaft；
Fig. 2 is the enlarged diagram in Fig. 1 at P；
Fig. 3 is the enlarged diagram in Fig. 1 at Q；
Fig. 4 is schematic diagram of the assembling structure in thrust plate state of wear of prior art crankcase and crankshaft；
Fig. 5 is the enlarged diagram in Fig. 4 at P；
Fig. 6 is the enlarged diagram in Fig. 4 at Q；
Fig. 7 is crankcase use state diagram provided in an embodiment of the present invention.
Specific embodiment
As shown in fig. 7, a kind of crankcase, including cabinet 1, cabinet wall have at least one base bearing thrust gear 11 and
The auxiliary bearing thrust gear 12 of 11 two sides is kept off positioned at all base bearing thrusts, the side of base bearing thrust gear 11 has for working as thrust
Piece 2 still ensures that the first surface 11a between crankcase 1 and crankshaft 3 with gap after wearing；The side of auxiliary bearing thrust gear 12
With for still ensuring that the second curved surface 12a between crankcase 1 and crankshaft 3 with gap after thrust plate 2 is worn.
Crankcase provided by the invention, when braking, clutch shifter push the thrust of release bearing compression clutch disk
When crankshaft being caused axial float occur, ensure that crankshaft balance weight 31 is stopped with crankcase base bearing by above-mentioned first surface 11a
Gap between the 11 of push and block is ensured between the main bearing journal shaft shoulder 32 and auxiliary bearing thrust gear 12 by the second curved surface 12a
Gap between gap and crankshaft balance weight 31 and auxiliary bearing thrust gear 12, so as to avoid touching for crankshaft 3 and crankcase 1
Hit, had when solving engine idling operation it is more bored " when, when " Abnormal Sound, and then alleviate the mill of crankshaft 3 and crankcase 1
Damage, improves the durability and service life of crankcase 1.
As the preferred of above-described embodiment, first surface 11a and/or the second curved surface 12a are in arc surfaced.Due to crankshaft counterbalance
It is concave arc shape, main bearing journal axis that 31, which are weighed, with face close when adjacent base bearing thrust gear 11 and 12 collision of gear of auxiliary bearing thrust
Close face is also concave arc shape when shoulder 32 and 12 collision of gear of adjacent auxiliary bearing thrust, therefore when first surface 11a and crankshaft are flat
When weight thrust surface is adapted in arc surfaced, base bearing thrust block pushing surface needs processing dimension minimum, and at the same time will not
The installation for influencing main beating cap, equally, as the second curved surface 12a and main bearing journal shaft shoulder thrust surface and crankshaft balance weight thrust surface
When being adapted in arc surfaced, auxiliary bearing thrust block pushing surface needs processing dimension minimum, and at the same time auxiliary bearing will not be influenced
The installation of lid.
As the deformation of above-described embodiment, first surface 11a and the second curved surface 12a can also be in fillet surface shape.
As the further improvement of above-described embodiment, base bearing thrust gear 11 side adjacent with crankshaft balance weight 31 is equal
With first surface 11a.To ensure in thrust plate serious wear, each base bearing thrust gear 11 will not be with crankshaft balance weight
31 collisions, when the gap difference between base bearing thrust gear 11 and crankshaft balance weight 31, no matter crankshaft 3 is along which axial direction
Play, first surface 11a can guarantee the gap between crankshaft balance weight thrust surface and base bearing thrust gear side, to avoid
The two collision.
As the further improvement of above-described embodiment, auxiliary bearing thrust keeps off 12 sides adjacent with crankshaft balance weight 31
First surface 11a is all had, auxiliary bearing thrust keeps off 12 sides adjacent with the main bearing journal shaft shoulder 32 and all has the second curved surface
12a.When the gap between base bearing thrust gear 11 and crankshaft balance weight thrust surface keeps off 12 and main bearing journal with auxiliary bearing thrust
When gap difference between shaft shoulder thrust surface, for the sake of assurance, in each auxiliary bearing thrust gear 12 and the main bearing journal shaft shoulder 32
Adjacent side is all provided with the second curved surface 12a, keeps off 12 sides adjacent with crankshaft balance weight 31 in each auxiliary bearing thrust and is all provided with the
One curved surface 11a, it is ensured that between auxiliary bearing thrust gear 12 and the main bearing journal shaft shoulder 32 and auxiliary bearing thrust gear 12 is put down with crankshaft
Gap is remained between weight 31, is avoided collision, survey calculation is not needed, selectively in the side of auxiliary bearing thrust gear 12
Process the second curved surface.
The embodiment of the present invention also provides a kind of engine, as shown in fig. 7, comprises cylinder body and setting be in the intracorporal crankshaft 3 of cylinder,
It for the part of built-up crankshaft 3 is crankcase 1 on cylinder body, crankcase 1 is the crankcase 1 of above-mentioned any embodiment, in crankcase
Base bearing thrust gear 11 on wall is located on crankshaft between adjacent two crankshaft balance weight 31, and the auxiliary bearing thrust of crankshaft chamber interior wall is kept off
The 12 main bearing journal shaft shoulders 32 for closing on both ends on crankshaft 3 are arranged.
Engine provided by the invention works as brake since the crankcase on cylinder body uses the crankcase 1 of above structure
When, clutch shifter pushes the thrust of release bearing compression clutch disk when crankshaft being caused axial float occur, passes through above-mentioned the
One curved surface 11a ensures the gap between crankshaft balance weight 31 and crankcase base bearing thrust gear 11, true by the second curved surface 12a
The gap between the main bearing journal shaft shoulder 32 and crankcase auxiliary bearing thrust gear 12 is protected, to avoid touching for crankshaft and crankcase
Hit, had when solving engine idling operation it is more bored " when, when " Abnormal Sound, and then alleviate the abrasion of crankshaft and cylinder body,
Improve the durability and service life of engine.
Thrust surface shape as the further improvement of above-described embodiment, on first surface 11a and crankshaft balance weight 31
It is identical.Second curved surface 12a is identical as the thrust surface shape of the main bearing journal shaft shoulder 32.Ensure that gap is uniform, when thrust plate 2 into one
After step abrasion, still ensures that the presence in gap, avoid the collision of crankshaft and cylinder body.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (7)
1. a kind of crankcase, including cabinet, there is the cabinet wall base bearing thrust to keep off and be located at the base bearing thrust
Keep off the auxiliary bearing thrust gear of two sides, which is characterized in that the side of the base bearing thrust gear has for after thrust pad wear
Still ensure that the first surface between crankcase and crankshaft with gap；The side of the auxiliary bearing thrust gear has for when only
The second curved surface between crankcase and crankshaft with gap is still ensured that after push jack abrasion.
2. crankcase according to claim 1, which is characterized in that the first surface and/or the second curved surface are in arc surfaced.
3. crankcase according to claim 1 or 2, which is characterized in that the base bearing thrust gear is flat with the crankshaft
The adjacent side of weight all has the first surface.
4. crankcase according to claim 3, which is characterized in that the trunnion of auxiliary the bearing thrust gear and the crankshaft
The adjacent side of the shaft shoulder all has second curved surface.
5. a kind of engine, including cylinder body and setting are used to assemble the crankshaft on the intracorporal crankshaft of the cylinder, the cylinder body
Part be crankcase, which is characterized in that the crankcase is any crankcase of the claims 1-4, the song
Base bearing thrust gear on axle box inner wall between two crankshaft balance weight adjacent on the crankshaft, the crankshaft chamber interior wall it is auxiliary
Bearing thrust gear closes on the main bearing journal shaft shoulder setting at both ends on the crankshaft.
6. engine according to claim 5, which is characterized in that stopping on the first surface and the crankshaft balance weight
Pushing surface shape is identical.
7. engine according to claim 5 or 6, which is characterized in that second curved surface and the main bearing journal axis
The thrust surface shape of shoulder is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091195.5A CN103850822B (en) | 2014-03-13 | 2014-03-13 | Crankcase and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410091195.5A CN103850822B (en) | 2014-03-13 | 2014-03-13 | Crankcase and engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103850822A CN103850822A (en) | 2014-06-11 |
| CN103850822B true CN103850822B (en) | 2019-06-25 |
Family
ID=50858881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410091195.5A Expired - Fee Related CN103850822B (en) | 2014-03-13 | 2014-03-13 | Crankcase and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103850822B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6278120B2 (en) * | 2014-08-21 | 2018-02-14 | 日産自動車株式会社 | Crankshaft bearing structure of internal combustion engine |
| CN110375683B (en) * | 2019-07-11 | 2021-01-12 | 浙江义利汽车零部件有限公司 | Method and system for measuring axial clearance of crankshaft and vehicle |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008261474A (en) * | 2007-03-19 | 2008-10-30 | Nok Corp | Thrust washer |
| CN201588704U (en) * | 2009-12-30 | 2010-09-22 | 三阳工业股份有限公司 | Engine crankshaft supporting device |
| US8657498B2 (en) * | 2011-08-19 | 2014-02-25 | Us Synthetic Corporation | Bearing assemblies, apparatuses, and motor assemblies using the same |
| US8869776B2 (en) * | 2011-11-25 | 2014-10-28 | Honda Motor Co., Ltd. | Auxiliary device mounting structure for an internal combustion engine |
| CN203796436U (en) * | 2014-03-13 | 2014-08-27 | 内蒙古欧意德发动机有限公司 | Crankcase and engine |
-
2014
- 2014-03-13 CN CN201410091195.5A patent/CN103850822B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103850822A (en) | 2014-06-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190625 Termination date: 20200313 |