CN203743182U - Low-damp single-cylinder air cooling diesel engine crankshaft - Google Patents
Low-damp single-cylinder air cooling diesel engine crankshaft Download PDFInfo
- Publication number
- CN203743182U CN203743182U CN201420143722.8U CN201420143722U CN203743182U CN 203743182 U CN203743182 U CN 203743182U CN 201420143722 U CN201420143722 U CN 201420143722U CN 203743182 U CN203743182 U CN 203743182U
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- China
- Prior art keywords
- oil
- journal
- oil film
- duct
- rod journal
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- 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.)
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Abstract
A low-damp single-cylinder air cooling diesel engine crankshaft comprises an output end journal, a timing gear journal, a connecting rod journal, a vertical oil inlet duct, an inclined oil duct and oil outlets, wherein the oil outlets communicated and connected with the vertical oil inlet duct via the inclined oil duct are circumferentially and uniformly formed in the connecting rod journal; an oil film forming groove is formed on the surface of an excircle of the connecting rod journal; the oil film forming groove is communicated and connected with the inclined oil duct via the oil outlets; the axial length of the oil film forming groove is less than that of the connecting rod journal; oil film forming grooves are further formed at the two ends of the vertical oil inlet duct on the output end journal; a gear lubrication oil duct is arranged on the timing gear journal; and the gear lubrication oil duct is communicated and connected with the inclined oil duct.Since the oil film forming groove is formed on the surface of the excircle of the connecting rod journal, the interior of a sliding bearing fit pair is lubricated more sufficiently; the rotation resistance of a crankshaft is reduced; the gear lubrication oil duct reduces gear engagement noise; friction between gears and the engine temperature are reduced; and the service life of a transmission gear bank is prolonged.
Description
Technical field:
The utility model relates to a kind of single-cylinder air-cooled diesel engine component, relates in particular to the bent axle of single-cylinder air-cooled diesel engine.
Background technique:
Bent axle is the core component of single-cylinder air-cooled diesel engine, it is by starting end axle journal, right equilibrium block, rod journal, left equilibrium block and output terminal axle journal form, starting end axle journal is bearing on the body of diesel engine by bearing, output terminal axle journal covers in lateral ends by sliding supported condition, rod journal is sleeved in the big end hole of connecting rod, Spielpassung between the two, in order to solve between the sliding bearing that output terminal axle journal and lateral ends cover, hold the lubrication problem between rod journal and connecting rod bearing shell, prevent from stinging a watt phenomenon because losing oil generation, in single-cylinder air-cooled diesel engine, be provided with oil pump, oil pump is arranged on lateral ends and covers, on bent axle, be provided with tilting oil leab, the filler opening of oil leab is arranged on output terminal axle journal, oil leab passes to rod journal, on rod journal, have and draw oilhole, the oilhole that draws on rod journal communicates with oil leab, oil pump is extracted the oil groove of machine oil from output terminal axle journal out and is entered oil leab in body, lubrication hole from rod journal flows out again, thereby the revolute that is slidably matched between rod journal and connecting rod bearing shell is carried out to pressure lubrication.But this lubricating structure is unfavorable for the formation of oil film, the revolute frictional resistance that is slidably matched at output terminal axle journal and rod journal place is larger, affects the output of diesel engine useful horsepower.Simultaneously, in existing single-cylinder vertical air-cooled diesel engine, between the driving gear set being driven by crankshaft timing gear, rely on splash lubrication, when diesel engine and running mechanism are when supporting, because diesel engine can constantly change position, cause the lubricant oil storage in the end cap of side often to have fluctuation, make splash lubrication unstable, can cause like this gear tooth noise large, between gear, friction velocity is fast, machine temperature is higher, and the working life of driving gear set is short.
Model utility content:
The purpose of this utility model is to provide a kind of low resistance single-cylinder air-cooled diesel engine bent axle, it can form low resistance oil film between output axle journal and sliding bearing, rod journal and connecting rod bearing shell, further improve the pressure lubrication condition of the revolute that is slidably matched, reduce running resistance, meanwhile, be also convenient to crankshaft timing gear transmission group to carry out pressure lubrication.
The utility model is to realize by following technical solution above-mentioned purpose.
A kind of low resistance single-cylinder air-cooled diesel engine bent axle, comprise output terminal axle journal, timing gear axle journal, rod journal, vertical oil input channel, tilting oil duct and oil outlet, vertically oil input channel is arranged on output terminal axle journal, on rod journal, be provided with oil outlet, oil outlet interlinks by tilting oil duct and vertical oil input channel, it is characterized in that: on rod journal, edge is circumferentially provided with 2～8 oil outlets equably, outer round surface at rod journal is provided with oil film grooving, oil film grooving interlinks by oil outlet and tilting oil duct, oil film grooving is positioned at the center of rod journal vertically, the axial length of oil film grooving is less than the axial length of rod journal, at the axial two ends of oil film grooving, be provided with gear tank deck rank, on output terminal axle journal, vertically the two ends of oil input channel are also provided with oil film grooving, are provided with gear lubrication oil duct on timing gear axle journal, and gear lubrication oil duct and tilting oil duct interlink.
Further, the lateral cross section of described oil film grooving is shaped as " soup ladle " shape, the curved surface kettleholder that stores the spoon pond of lubricant oil and be convenient to form oil film, consists of, and the curved surface kettleholder of oil film grooving is towards sense of rotation.
Further, on rod journal, edge is circumferentially provided with four oil outlets equably.
Further, gear lubrication oil duct offers in the teeth groove of circumferential position in crankshaft timing gear.
Further, the axial length that is arranged on the oil film grooving on rod journal is less 4～6 millimeters than the axial length of rod journal, and the axial length of axial length specific output end journal that is arranged on the oil film grooving on output terminal axle journal is little 4～6 millimeters.
Owing to having offered oil film grooving on the outer round surface of rod journal, oil film grooving interlinks by oil outlet and tilting oil duct, and oil film grooving is positioned at the center of rod journal vertically, on output terminal axle journal, vertically the two ends of oil input channel are also provided with oil film grooving, like this, the oil film grooving that the pressure lubrication oil of extracting out from oil pump is provided with from output terminal axle journal enters in vertical oil input channel, enter again oil film grooving on the outer round surface that tilting oil duct flows to respectively rod journal and the gear lubrication oil duct on timing gear axle journal, the offering of oil film grooving is more conducive to the formation of lubricant film in sliding bearing matching pair, make lubricated more abundant, thereby reduce the rotational resistance of bent axle, the driving cog group driving for crankshaft timing gear of offering of gear lubrication oil duct realizes pressure lubrication technical support is provided, and can reduce the noise of gear engagement, delay to rub between gear, and reduction machine temperature, the working life of prolongation driving gear set.
Accompanying drawing explanation:
Fig. 1 is the structural representation of single-cylinder vertical air-cooled diesel engine;
Fig. 2 is structural representation of the present utility model;
Fig. 3 is A-A sectional view in Fig. 2;
Fig. 4 is B-B sectional view in Fig. 2;
In figure: 1-output terminal axle journal; 2-timing gear axle journal; 3-rod journal; The vertical oil input channel of 4-; The tilting oil duct of 5-; 6-oil outlet; 7-oil film grooving; 71-spoon pond; 72-curved surface kettleholder; 8-gear lubrication oil duct; 9-crankshaft timing gear.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is done to further full and accurate explanation:
Embodiment 1: a kind of low resistance single-cylinder air-cooled diesel engine bent axle, as shown in Figure 2 to 4, comprise output terminal axle journal 1, timing gear axle journal 2, rod journal 3, vertical oil input channel 4, tilting oil duct 5 and oil outlet 6, vertically oil input channel 4 is arranged on output terminal axle journal 1, on rod journal 3, be provided with oil outlet 6, oil outlet 6 interlinks by tilting oil duct 5 and vertical oil input channel 4, on rod journal 3, edge is circumferentially provided with four oil outlets 6 equably, outer round surface at rod journal 3 is provided with oil film grooving 7, oil film grooving 7 interlinks by oil outlet 6 and tilting oil duct 5, oil film grooving 7 is the center in rod journal 3 vertically, the axial length of oil film grooving 7 is less 4 millimeters than the axial length of rod journal 3, at the axial two ends of oil film grooving 7, be provided with the gear tank deck rank of 2 millimeters, on output terminal axle journal 1, vertically the two ends of oil input channel 4 are also provided with oil film grooving 7, the lateral cross section of described oil film grooving 7 is shaped as " soup ladle " shape, the curved surface kettleholder 72 that stores the spoon pond 71 of lubricant oil and be convenient to form oil film, consist of, the curved surface kettleholder 72 of oil film grooving 7 is towards sense of rotation, on timing gear axle journal 2, be provided with gear lubrication oil duct 8, gear lubrication oil duct 8 interlinks with tilting oil duct 5, the offering in the teeth groove of circumferential position in crankshaft timing gear 9 of gear lubrication oil duct 8.
Mode of execution of the present utility model is a lot, be arranged on the quantity of the oil film grooving 7 on rod journal 3, the lateral cross section shape of oil film grooving 7, and the axial length of oil film grooving 7 can change, as long as it is all right to contribute to form more swimmingly oil lamella between connecting rod bearing shell and rod journal 3.This rule is applicable equally for the oil film grooving 7 of offering on output terminal axle journal 1.The offering position and also can change of gear lubrication oil duct 8, offering principle is the tooth root position that gear lubrication oil duct 8 can lead to crankshaft timing gear 9.
Claims (5)
1. a low resistance single-cylinder air-cooled diesel engine bent axle, comprise output terminal axle journal (1), timing gear axle journal (2), rod journal (3), vertical oil input channel (4), tilting oil duct (5) and oil outlet (6), vertically oil input channel (4) is arranged on output terminal axle journal (1), on rod journal (3), be provided with oil outlet (6), oil outlet (6) interlinks by tilting oil duct (5) and vertical oil input channel (4), it is characterized in that: upper along being circumferentially provided with equably 2～8 oil outlets (6) at rod journal (3), outer round surface at rod journal (3) is provided with oil film grooving (7), oil film grooving (7) interlinks by oil outlet (6) and tilting oil duct (5), oil film grooving (7) is positioned at the center of rod journal (3) vertically, the axial length of oil film grooving (7) is less than the axial length of rod journal (3), at the axial two ends of oil film grooving (7), be provided with gear tank deck rank, two ends at the upper vertical oil input channel (4) of output terminal axle journal (1) are also provided with oil film grooving (7), are provided with gear lubrication oil duct (8) on timing gear axle journal (2), and gear lubrication oil duct (8) interlinks with tilting oil duct (5).
2. low resistance single-cylinder air-cooled diesel engine bent axle according to claim 1, it is characterized in that: the lateral cross section of described oil film grooving (7) is shaped as " soup ladle " shape, the curved surface kettleholder (72) that stores the spoon pond (71) of lubricant oil and be convenient to form oil film, consist of, the curved surface kettleholder (72) of oil film grooving (7) is towards sense of rotation.
3. low resistance single-cylinder air-cooled diesel engine bent axle according to claim 1, is characterized in that: upper along being circumferentially provided with equably four oil outlets (6) at rod journal (3).
4. low resistance single-cylinder air-cooled diesel engine bent axle according to claim 1, is characterized in that: the offering in the teeth groove of circumferential position in crankshaft timing gear (9) of gear lubrication oil duct (8).
5. low resistance single-cylinder air-cooled diesel engine bent axle according to claim 1, it is characterized in that: the axial length that is arranged on the oil film grooving (7) on rod journal (3) is less 4～6 millimeters than the axial length of rod journal (3), the axial length of axial length specific output end journal (1) that is arranged on the oil film grooving (7) on output terminal axle journal (1) is little 4～6 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143722.8U CN203743182U (en) | 2014-03-27 | 2014-03-27 | Low-damp single-cylinder air cooling diesel engine crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420143722.8U CN203743182U (en) | 2014-03-27 | 2014-03-27 | Low-damp single-cylinder air cooling diesel engine crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203743182U true CN203743182U (en) | 2014-07-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420143722.8U Expired - Fee Related CN203743182U (en) | 2014-03-27 | 2014-03-27 | Low-damp single-cylinder air cooling diesel engine crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203743182U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259596A (en) * | 2019-06-21 | 2019-09-20 | 隆鑫通用动力股份有限公司 | Engine |
| CN112177704A (en) * | 2019-07-01 | 2021-01-05 | 康明斯公司 | Crankshaft oil hole arrangement for lubrication |
-
2014
- 2014-03-27 CN CN201420143722.8U patent/CN203743182U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110259596A (en) * | 2019-06-21 | 2019-09-20 | 隆鑫通用动力股份有限公司 | Engine |
| CN112177704A (en) * | 2019-07-01 | 2021-01-05 | 康明斯公司 | Crankshaft oil hole arrangement for lubrication |
| CN112177704B (en) * | 2019-07-01 | 2023-02-17 | 康明斯公司 | Crankshaft oil hole arrangement for lubrication |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| 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: 20140730 Termination date: 20160327 |