CN203308885U - Connecting rod structure for engine - Google Patents
Connecting rod structure for engine Download PDFInfo
- Publication number
- CN203308885U CN203308885U CN2013202782767U CN201320278276U CN203308885U CN 203308885 U CN203308885 U CN 203308885U CN 2013202782767 U CN2013202782767 U CN 2013202782767U CN 201320278276 U CN201320278276 U CN 201320278276U CN 203308885 U CN203308885 U CN 203308885U
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- connecting rod
- engine
- piston
- connecting rods
- bearing
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Abstract
The utility model belongs to the technical field of engine components, and relates to a connecting rod structure for an engine. The two ends of each piston connecting rod are respectively a large end and a small end; the upper end surface of each large end is provided with a chamfer; the lower end surface of each large end is a plane; two piston connecting rods are respectively arranged on a crank pin through the large ends of the piston connecting rods; the binding surfaces of the large ends of the two piston connecting rods are planes; a connecting rod bearing bush is arranged between the large end and the crank pin, corresponding to each piston connecting rod. According to the connecting rod structure for the engine, two cylinder piston connecting rods are arranged in parallel on a short crank connecting rod, and technical improvement is performed on the large ends of the piston connecting rods, so that the problems that the pressure bearing area of the connecting rod bearing bush is small, the specific pressure is very high, and the work of the bearing bush is unreliable are effectively solved. According to the connecting rod structure for the engine, the chamfers for avoiding crankshaft fillets are removed from both sides of each binding surface of each of the two connecting rods, so that the width of the two pairs of connecting rod bearing bushes, namely the length of the radius of the two chamfered fillets, can be increased, namely the pressure bearing areas of the bearing bushes are increased.
Description
Technical field
The utility model belongs to the engine component technical field, relates to a kind of engine connecting rod structure.
Background technique
At present, there is chamfering the major part both sides of known engine link, are used for dodging the fillet of crankweb and crank pin junction.The connecting rod bearing shell Extreme breadth of this structure only has the connnecting rod big end width to deduct the width of two fillets.Because the V-type engine structure is very compact, motor boundary dimension is less, and the length of crank pin is very short, there is the connecting rod of large chamfering two both sides of assembling side by side, cause two pairs of connecting rod bearing shells very narrow, and bearing area is very little, specific pressure is very high, has caused the lubricated very unreliable of connecting rod bearing shell.Often find that the engine lubrication oil pressure is on the low side, oil pressure is unstable, fluctuation is large, and bearing-burning-out even just affects functional reliability and the life-span of diesel engine.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of engine connecting rod structure simple in structure, ingenious, rational is provided, this bar linkage structure can effectively solve in the situation of the shared crank pin of two connecting rods, the connnecting rod big end width is narrow, causes the low problem of lubricant film bearing capacity that the connecting rod bearing shell width is narrow and form.
The technological scheme provided according to the utility model: a kind of engine connecting rod structure, piston rod two is respectively major part and microcephaly, be characterised in that: described major part upper-end surface has chamfering, lower end surface is plane, two piston rods are installed on crank pin by its major part respectively, and the faying surface of two piston rod major parts is plane, between major part and crank pin, connecting rod bearing shell is set corresponding to each piston rod.
As further improvement of the utility model, two connecting rod bearing shell connecting parts fit tightly, and make two connecting rod bearing shells and are connected into a slice.
The utility model compared with prior art, advantage is: the utility model is installed two piston rods side by side on a shorter crank pin, by the piston rod major part is carried out to technological improvement, effectively overcome the connecting rod bearing shell bearing area little, specific pressure is very high, the insecure problem of bearing shell work.The utility model all removes in the faying surface both sides of two connecting rods the chamfering of dodging crankshaft fillet, can increase the width (length of two rounding radiuses) of two pairs of connecting rod bearing shells, has namely increased the bearing area of bearing shell.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of connecting rod.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in Figure 1 and Figure 2, comprise major part 1, connecting rod bearing shell 2, crank pin 3, piston rod 4, chamfering 5, plane 6 etc.
As shown in Figure 1 and Figure 2, a kind of engine connecting rod structure, piston rod 4 two are respectively major part 1 and microcephaly, described major part 1 upper-end surface has chamfering 5, lower end surface is plane 6, two piston rods 4 are installed on crank pin 3 by its major part 1 respectively, and the faying surface of two piston rod 4 major parts 1 is plane 6, between major part 1 and crank pin 3, connecting rod bearing shell 2 are set corresponding to each piston rod 4.
Two connecting rod bearing shell 2 connecting parts fit tightly, and make two connecting rod bearing shells 2 and are connected into a slice.
The utility model improves by the situation that two piston rods 4 are shared to a crank pin 3, the faying surface of two piston rods 4 is set to plane (chamfering of piston rod 4 major part 1 homonymies is removed) separately, so that reserve wide distance, so that the larger connecting rod bearing shell 2 of apolegamy width, improve the bearing area of connecting rod bearing shell 2, reduce the pressure ratio of connecting rod bearing shell 2, by above-mentioned measure, can improve reliability and the operating life of connecting rod bearing shell 2, avoid the danger of diesel engine bearing-burning-out.
According to theoretical experience: the lubricant film bearing capacity is directly proportional to the cube of bearing shell width, in certain scope, select and try one's best the bearing shell width large and the ratio of bearing shell diameter, when having improved the lubricant film bearing capacity, improved again the oil pressure in lubricating oil path, the operating life of having improved and having extended connecting rod bearing shell 2.The specific pressure drop of visible connecting rod bearing shell 2 is much lower, and 2 life-spans of connecting rod bearing shell increase substantially, and oil pressure is stable, and then the reliability of diesel engine is guaranteed.
Claims (2)
1. engine connecting rod structure, piston rod (4) two is respectively major part (1) and microcephaly, it is characterized in that: described major part (1) upper-end surface has chamfering (5), lower end surface is plane (6), two piston rods (4) are installed on crank pin (3) by its major part (1) respectively, and the faying surface of two piston rods (4) major parts (1) is plane (6), between major part (1) and crank pin (3), connecting rod bearing shell (2) is set corresponding to each piston rod (4).
2. engine connecting rod structure as claimed in claim 1, it is characterized in that: two connecting rod bearing shells (2) connecting part fits tightly, and makes two connecting rod bearing shells (2) and is connected into a slice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202782767U CN203308885U (en) | 2013-05-20 | 2013-05-20 | Connecting rod structure for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202782767U CN203308885U (en) | 2013-05-20 | 2013-05-20 | Connecting rod structure for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203308885U true CN203308885U (en) | 2013-11-27 |
Family
ID=49615098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202782767U Expired - Lifetime CN203308885U (en) | 2013-05-20 | 2013-05-20 | Connecting rod structure for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203308885U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244549A (en) * | 2013-05-20 | 2013-08-14 | 无锡开普动力有限公司 | Connecting rod structure of engine |
-
2013
- 2013-05-20 CN CN2013202782767U patent/CN203308885U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244549A (en) * | 2013-05-20 | 2013-08-14 | 无锡开普动力有限公司 | Connecting rod structure of engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191011 Granted publication date: 20131127 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20201120 Granted publication date: 20131127 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131127 |