CN203809143U - Cracking main bearing cap - Google Patents
Cracking main bearing cap Download PDFInfo
- Publication number
- CN203809143U CN203809143U CN201420121074.6U CN201420121074U CN203809143U CN 203809143 U CN203809143 U CN 203809143U CN 201420121074 U CN201420121074 U CN 201420121074U CN 203809143 U CN203809143 U CN 203809143U
- Authority
- CN
- China
- Prior art keywords
- main bearing
- bearing cap
- cracking
- main
- shaft hole
- 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 - Lifetime
Links
- 238000005336 cracking Methods 0.000 title abstract 6
- 238000003754 machining Methods 0.000 abstract description 7
- 238000005266 casting Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Abstract
The utility model discloses a cracking main bearing cap. The main bearing cap is integrally cast with a body. After the machining of a main shaft hole is finished, the main bearing cap is cracked from the body, a cracked surface serves as a positioning surface between the main bearing cap and the body, and the main bearing cover is fastened with the body by use of a main bearing bolt. During casting, a cracking notch is reserved in the joint part of the body and the main bearing cap. Firstly, the main shaft hole is machined; as the main bearing cap and the body are integrated and made of the same material, the machining precision of the main shaft hole is quite easy to guarantee. After finishing machining, pressure cracking is performed on the main bearing cap and the body, and the cracked surface formed after cracking serves as the positioning surface for combining again. The cracking main bearing cap is characterized in that the positioning precision of the main bearing cap is guaranteed, the machining deformation of the main shaft hole due to a positioning error is avoided, the product quality is guaranteed, the strength and the overall rigidity of the body are enhanced, and the product reliability is improved.
Description
Technical field
The utility model belongs to gas engine part, and being specifically related to is the main bearing cap above engine body.
Background technique
Body is the skeleton of motor, is the installation basis of the each system of motor the load of bearing various parts, and therefore body must have enough strength and stiffness.Animal economy foundry goods comprises cylinder block and crankcase, and the cylindrical cavity on cylinder block top is called cylinder, the crankcase that Lower Half is supporting crankshaft.Wherein body main bearing seat and main bearing cap form spindle hole, are used for installing the bent axle of motor, the quantity basis cylinder number of spindle hole and determining.Spindle hole requirement on machining accuracy is higher, when built-up crankshaft, needs first main bearing cap to be pulled down, and then ressembles.Because main bearing cap at least needs to install and remove twice, and position can not change, and main bearing cap must have positioning device for this reason.
The orientation type of engine main bearing cover has two kinds at present: one is seam location, processes the cylindrical interference fit of seam and main bearing cap on body, forms location.The advantage of this orientation type is bearing cap and body interference fit, the good rigidly of bearing cap and body junction plane, and shortcoming positioning precision is poor.Another is locating stud location, and between bearing cap and body, by Bolt to position, its advantage is that positioning precision is higher, but the poor rigidity of bearing cap and body junction plane.Be not suitable for high-power multicylinder engine.Although these two kinds of orientation types can both meet positioning requirements, or positioning precision is inadequate, or the poor rigidity of locating face.Proposition of the present utility model both can have been got the advantage of above-mentioned two kinds of orientation types, can compensate its defect again.
Summary of the invention
The purpose of this utility model is, the one disconnected formula main bearing cap that rises is provided.
For reaching this object the technical solution adopted in the utility model be: the disconnected formula main bearing cap that rises, its main bearing cap and body casting are as a whole.After spindle hole processing is finished, main bearing cap is gone up from body disconnected, the section that rises, as the locating face between main bearing cap and body, adopts Main bearing bolt by fastening to main bearing cap and body.
When engine body is cast, each main bearing cap and body are all cast as a whole.After fine finishing completes to spindle hole, adopt the disconnected mode that rises that main bearing cap is gone up from body disconnected, the main bearing cap of having no progeny of rising comes off, and the section that rises is the locating face of main bearing cap, and the positioning precision of this section that rises is far away higher than other orientation type.
Feature of the present utility model and beneficial effect be, ensures the positioning precision of main bearing cap, avoids the spindle hole machining deformation that causes due to positioning error, ensured quality of product, improves intensity and the integral rigidity of the body of knowing clearly, and promoted product reliability requirement.
Brief description of the drawings
Shown in accompanying drawing be principle of the present utility model and section of structure.
Embodiment
Below in conjunction with accompanying drawing and by embodiment, the principle to model utility and structure are further described.
Disconnected formula main bearing cap rises, its structure is: main bearing cap 1 and body 2 are cast as a whole, after spindle hole is machined, main bearing cap is gone up disconnected from body, now rise by section 3 as the locating face between main bearing cap and body, adopt Main bearing bolt 4 by fastening to main bearing cap and body.
Specific embodiment is a large discharge capacity 6 cylinder diesels engine for automobile, and 6 main bearing cap and body are cast into one, leaves at the binding site of body and main bearing cap the disconnected otch that rises.First spindle hole is processed, because main bearing cap and body are as one, and belonged to commaterial, therefore the machining accuracy of spindle hole is easy to ensure.Processing is carried out pressure to main bearing cap and body after finishing and is risen disconnectedly, rising that have no progeny can the section that rises of formation, and this section that rises is as the locating face that again closes (axle) watt-hour.Because the section that rises is sealing surface, therefore positioning precision is very high, and integrated design has simultaneously ensured again the requirement of strength of main bearing cap and body junction plane.The main bearing cap that the disconnected formula that rises is assembled can ensure the requirement of strength of lid and body junction plane from structure arranges, and this orientation type is applicable to the engine spindle hole processing of high-power large discharge capacity and locates very much.
Claims (1)
1. disconnected formula main bearing cap rises, it is characterized in that: main bearing cap (1) is cast as a whole with body (2), spindle hole processing is finished, main bearing cap is gone up disconnected from body, rise by section (3) as the locating face between main bearing cap and body, adopt Main bearing bolt (4) by fastening to main bearing cap and body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121074.6U CN203809143U (en) | 2014-03-17 | 2014-03-17 | Cracking main bearing cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420121074.6U CN203809143U (en) | 2014-03-17 | 2014-03-17 | Cracking main bearing cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203809143U true CN203809143U (en) | 2014-09-03 |
Family
ID=51447909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420121074.6U Expired - Lifetime CN203809143U (en) | 2014-03-17 | 2014-03-17 | Cracking main bearing cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203809143U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120260A (en) * | 2019-12-18 | 2020-05-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Machining method of double-support frame, double-support frame and piston compressor |
-
2014
- 2014-03-17 CN CN201420121074.6U patent/CN203809143U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111120260A (en) * | 2019-12-18 | 2020-05-08 | 珠海格力节能环保制冷技术研究中心有限公司 | Machining method of double-support frame, double-support frame and piston compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203809143U (en) | Cracking main bearing cap | |
| CN103939456B (en) | The base bearing of internal combustion engine | |
| CN201771612U (en) | Engine cylinder cover with reliable tappet hole support structure | |
| CN101144401A (en) | Engine oil bottom case | |
| CN207892677U (en) | Diesel engine oil pan | |
| CN203769876U (en) | Combined type diesel engine oil bottom shell | |
| CN203670017U (en) | Cylinder block of diesel engine | |
| CN104179544A (en) | Novel automobile engine | |
| CN102606252B (en) | Variable valve timing control system oil passage and timing cover for automobile engine | |
| CN202970939U (en) | Structure of engine timing cover | |
| CN205225367U (en) | Novel oil pan subassembly | |
| CN201925035U (en) | Cylinder | |
| CN205365751U (en) | Automobile engine protecgulum | |
| CN205135744U (en) | Improve sealing performance and increase oil pan in oil storage space | |
| CN203420760U (en) | Engine oil sump | |
| CN205089389U (en) | Camshaft bearing lid, engine and vehicle | |
| CN203730148U (en) | Six-cylinder in-line arrangement diesel engine body | |
| CN203879644U (en) | Cylinder head cover of diesel engine | |
| CN203559950U (en) | Diesel engine fuel pump and water pump supporting tank | |
| CN205841031U (en) | Engine crankcase | |
| CN203925774U (en) | A kind of gear chamber of overhead camshaft diesel engine | |
| CN203847199U (en) | Diesel engine oil pan | |
| CN203547981U (en) | Oil pan gasket for sealing air cylinder | |
| CN203441957U (en) | Connecting rod assembly of diesel engine | |
| CN204140217U (en) | Housing structure in motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Cracking main bearing cap Effective date of registration: 20190612 Granted publication date: 20140903 Pledgee: LINGYUAN IRON & STEEL GROUP CO.,LTD. Pledgor: DONGFENG CHAOYANG DIESEL Co.,Ltd. Registration number: 2019210000021 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |