CN216788512U - Engine - Google Patents
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- CN216788512U CN216788512U CN202220542840.0U CN202220542840U CN216788512U CN 216788512 U CN216788512 U CN 216788512U CN 202220542840 U CN202220542840 U CN 202220542840U CN 216788512 U CN216788512 U CN 216788512U
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- connecting rod
- rod journal
- duct
- engine
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Abstract
The utility model relates to an engine with a vertically arranged crankshaft, in particular to an engine, which comprises a crankcase, wherein a vertically arranged vertical crankshaft is installed in the crankcase, the vertical crankshaft comprises a main journal and a connecting rod journal, an oil inlet oil duct with an open upper end is vertically arranged on the connecting rod journal, an oil outlet duct extending along the radial direction is arranged on the connecting rod journal, the oil outlet duct is communicated with the oil inlet oil duct, one end of the oil outlet duct communicated with the outer side of the connecting rod journal faces to one side of the connecting rod journal away from the main journal, an included angle H is formed between a plane defined by the axis of the main journal and the axis of the connecting rod journal and the center line of the oil outlet duct, and the included angle H is between 30 and 60 degrees; and an oil supply piece for gravity oil supply of the oil inlet channel is arranged in the crankcase. This scheme has been solved and has been adopted when splash lubrication to appear lubricated bad problem easily in connecting rod journal department under the high load condition in current vertical engine.
Description
Technical Field
The utility model relates to an engine with a vertical layout of a crankshaft.
Background
The crank-connecting rod mechanism is a main component for energy conversion and working cycle realization of the engine, after an engine crankshaft is acted by external force, the piston is driven by the connecting rod to do reciprocating motion to suck combustible mixed gas, the combustible mixed gas is combusted in the combustion chamber to do work, the piston is further pushed to move to rotate the crankshaft, the engine automatically operates, and the working cycle automatically operates. The crankshaft is one of the important parts of the engine, and bears the action of high-speed and periodically-changed gas pressure, reciprocating inertia force, centrifugal force, and additional force caused by bending vibration and torsional vibration. Under the conditions of high rotating speed and variable load of the engine, the flow of engine oil is discontinuous, and an oil film at a joint surface between the connecting rod journal and the connecting rod is difficult to form, so that higher requirements are provided for the lubrication of the connecting rod journal.
The common link lubrication methods include pressure lubrication and splash lubrication. The pressure lubrication mode is that an outlet oil duct is arranged on the connecting rod journal in the circumferential direction, an inclined inlet oil duct with a certain angle is arranged in the axial direction, the two oil ducts are communicated, lubricating oil is pressurized and pumped into the inlet oil duct by using an oil pump, and the lubricating oil flows out of the outlet oil duct to the surface of the connecting rod journal, so that a lubricating oil film is formed for lubrication. The splash lubrication mode is that lubricating oil is stirred at a high speed by using oil stirring teeth and splashed onto a crankshaft, so that the lubricating oil enters a joint surface of a connecting rod and a connecting rod journal to lubricate a big end bearing of the connecting rod.
However, when the crankshaft is vertically arranged, that is, the rotation axis of the crankshaft is in a vertical state to form a vertical crankshaft, the pressure lubrication mode causes the crankshaft structure to be complex to process and the cost is high; the splash lubrication method is simple in structure and low in cost, but when the crankshaft is subjected to high load, the splash lubrication method is difficult to effectively lubricate the connecting rod journal, so that the splash lubrication method is only used for engines with small load on the crankshaft.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an engine, which solves the problem that poor lubrication is easy to occur at a connecting rod journal under a high load condition when the existing vertical engine adopts splash lubrication.
In order to achieve the above purpose, the basic scheme of the utility model provides an engine, which comprises a crankcase, wherein a vertically arranged vertical crankshaft is installed in the crankcase, the vertical crankshaft comprises a main journal and a connecting rod journal, an oil inlet oil duct with an open upper end is vertically arranged on the connecting rod journal, an oil outlet oil duct extending along the radial direction is arranged on the connecting rod journal, the oil outlet oil duct is communicated with the oil inlet oil duct, one end of the oil outlet oil duct, which is communicated with the outer side of the connecting rod journal, faces to one side of the connecting rod journal, which is far away from the main journal, an included angle H is formed between a plane defined by the axis of the main journal and the axis of the connecting rod journal and the center line of the oil outlet oil duct, and the included angle H is between 30 degrees and 60 degrees; and an oil supply piece for gravity oil supply of the oil inlet channel is arranged in the crankcase.
The beneficial effect of this basic scheme lies in: by adopting the arrangement, the oil supply part enables lubricating oil in the crankcase to enter the oil inlet oil duct under the action of gravity, then the lubricating oil enters the oil outlet oil duct under the action of centrifugal force and flows to the outer side of the connecting rod journal through the oil outlet oil duct, so that a lubricating oil film is formed at a joint surface between the connecting rod journal and the connecting rod, and the abrasion condition of the connecting rod journal is improved. And, compare with the mode that adopts pressure lubrication, this scheme makes the connecting rod journal of vertical crankshaft under the prerequisite that guarantees that lubricated effect is unchangeable, has reduced the processing cost of bent axle by a wide margin through the cooperation of the fuel feeding piece of gravity type fuel feeding and oil feed oil duct and oil duct that produces oil.
Further, the oil supply piece is an oil stirring piece for performing splash lubrication on the vertical crankshaft. By adopting the arrangement, the connecting rod journal of the vertical crankshaft can be well lubricated under the condition of splash lubrication, and the design and the processing of a lubricating structure of the whole crankcase are further simplified, so that the cost is reduced.
In order to further increase the lubrication effect at the journal of the connecting rod, the angle of the angle H is between 30 ° and 35 °.
Further, the oil feed oil duct is including storing section and opening section, the opening section is located the upside of oil outlet duct, it is located the downside of oil outlet duct to store the section. By adopting the arrangement, impurities in the lubricating oil are deposited at the bottom of the storage section under the action of gravity, so that the impurities are separated from the lubricating oil, and the lubricating effect is further improved.
In order to further increase the lubricating effect at the journal of the connecting rod, the ratio between the length of the reservoir section and the length of the opening section is between 0.1 and 0.75.
In order to further improve the lubricating effect at the connecting rod journal, the ratio of the maximum cross-sectional width of the oil inlet passage to the diameter of the connecting rod journal is between 0.1 and 0.5.
In order to further improve the lubricating effect at the connecting rod journal, the ratio of the maximum cross-sectional width of the oil outlet passage to the length of the connecting rod journal is between 0.1 and 0.5.
In order to further improve the lubricating effect at the position of the connecting rod journal, the oil inlet oil passage and the connecting rod journal are coaxially arranged.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of an engine according to the present disclosure;
FIG. 2 is a schematic structural view of the vertical crankshaft of FIG. 1;
fig. 3 is a sectional view a-a of fig. 2.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the vertical type crankshaft comprises a vertical crankshaft 1, a main journal 11, a connecting rod journal 12, an oil inlet channel 121, an opening section 1211, a storage section 1212, an oil outlet channel 122, a crankcase 2, oil stirring teeth 3 and a connecting rod 4.
The embodiment is substantially as shown in figures 1, 2 and 3 of the accompanying drawings: an engine comprises a crankcase 2, a piston which slides transversely is arranged at the cylinder head part of the crankcase 2, a vertical crankshaft 1 which is vertically arranged is arranged in the crankcase 2, and the piston is connected with the vertical crankshaft 1 through a connecting rod 4. Vertical bent axle includes main journal 11 and connecting rod journal 12, is provided with the open oil feed oil duct 121 in upper end along vertical on the connecting rod journal 12, and in this embodiment, oil feed oil duct 121 is preferred to be with the coaxial setting of connecting rod journal 12. The connecting rod journal 12 is further provided with an oil outlet passage 122 extending along the radial direction, and the oil outlet passage 122 is communicated with the oil inlet passage 121, so that the lubricating oil in the oil inlet passage 121 flows to the circumferential outer side of the connecting rod journal 12 through the oil outlet passage 122, and the joint surface between the connecting rod journal 12 and the connecting rod is lubricated.
One end of the oil outlet passage 122, which is communicated with the outer side of the connecting rod journal 12, faces to one side of the connecting rod journal 12, which is far away from the main journal 11, and a plane defined by the axis of the main journal 11 and the axis of the connecting rod journal 12 forms an included angle H with the center line of the oil outlet passage 122, in this embodiment, the included angle H is preferably 30 °, and of course, the included angle H may have any value between 30 ° and 60 °. The ratio between the maximum cross-sectional width of the oil outlet passage 122 and the length L of the connecting rod journal 12 is preferably 0.2, but may be any value between 0.1 and 0.5. In the present embodiment, the cross section of the oil outlet passage 122 is preferably a circular cross section.
The oil-intake oil passage 121 includes a storage section 1212 and an open section 1211, the open section 1211 is located on the upper side of the oil outlet oil passage 122, and the storage section 1212 is located on the lower side of the oil outlet oil passage 122. The opening section 1211 is the section of the oil passage from the upper end of the oil-inlet oil passage 121 to the position communicating with the oil-outlet oil passage 122, and the storage section 1212 is the section of the oil passage from the position communicating with the oil-outlet oil passage 122 to the bottom of the oil-inlet oil passage 121 in the shape of a blind hole. In this embodiment, the ratio between the length of the storage section 1212 and the length of the opening section 1211 is preferably 0.75, but may be any value between 0.1 and 0.75. The ratio between the maximum cross-sectional width of the oil inlet passage 121 and the diameter of the connecting rod journal 12 is preferably 0.2, but may be any value between 0.1 and 0.5. In this embodiment, the cross section of the oil inlet passage 121 is preferably a circular cross section.
The oil supply member for gravity type oil supply to the oil inlet duct 121 is installed in the crankcase, in this embodiment, the oil supply member is an oil stirring member for performing splash lubrication on the vertical crankshaft, for example, the oil stirring teeth 3 linked with the vertical crankshaft, and the lubricating oil in the crankcase 2 is enabled to perform splash lubrication on the vertical crankshaft 1 through rotation of the oil stirring teeth 3, so that the splashed lubricating oil enters the oil inlet duct 121. Of course, other splashing lubrication methods may be used to replenish the oil inlet channel 121.
The specific implementation process is as follows: when the vertical crankshaft 1 rotates, the oil stirring teeth 3 rotate and splash lubricating oil to the connecting rod journal 12 of the vertical crankshaft 1, the splashed lubricating oil enters the oil inlet oil duct 121 from an opening at the upper end of the oil inlet oil duct 121, impurities in the lubricating oil are deposited at the bottom of the storage section 1212 under the action of gravity, and the lubricating oil flows to a joint surface between the connecting rod journal 12 and the connecting rod through the oil outlet oil duct 122 under the action of centrifugal force to lubricate.
The foregoing is merely an example of the present invention and common general knowledge of known specific structures and features of the embodiments is not described herein in any greater detail. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent.
Claims (8)
1. The utility model provides an engine, includes the crankcase, install the vertical bent axle of vertical setting in the crankcase, vertical bent axle includes main journal and connecting rod journal, the vertical open oil feed oil duct in upper end that is provided with along the vertical on the connecting rod journal, be provided with the oil duct that produces oil along radial extension on the connecting rod journal, the oil duct that produces oil communicates with the oil feed oil duct, its characterized in that: one end of the oil outlet duct, which is communicated with the outer side of the connecting rod journal, faces to one side, away from the main journal, of the connecting rod journal, and an included angle H is formed between a plane defined by the axis of the main journal and the axis of the connecting rod journal and the center line of the oil outlet duct, and the included angle H is 30-60 degrees; and an oil supply piece for gravity oil supply of the oil inlet channel is arranged in the crankcase.
2. The engine of claim 1, wherein: the oil supply part is an oil stirring part for carrying out splash lubrication on the vertical crankshaft.
3. The engine of claim 2, wherein: the angle of the included angle H is between 30 ° and 35 °.
4. The engine according to any one of claims 1 to 3, characterized in that: the oil inlet oil duct comprises a storage section and an opening section, the opening section is located on the upper side of the oil outlet oil duct, and the storage section is located on the lower side of the oil outlet oil duct.
5. The engine of claim 4, characterized in that: the ratio between the length of the storage section and the length of the opening section is between 0.1 and 0.75.
6. The engine of claim 5, wherein: the ratio of the maximum cross section width of the oil inlet channel to the diameter of the connecting rod journal is 0.1-0.5.
7. The engine of claim 6, wherein: the ratio of the maximum cross-sectional width of the oil outlet passage to the length of the connecting rod journal is between 0.1 and 0.5.
8. The engine of claim 7, wherein: the oil inlet duct is coaxial with the connecting rod journal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220542840.0U CN216788512U (en) | 2022-03-14 | 2022-03-14 | Engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220542840.0U CN216788512U (en) | 2022-03-14 | 2022-03-14 | Engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216788512U true CN216788512U (en) | 2022-06-21 |
Family
ID=82000868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220542840.0U Active CN216788512U (en) | 2022-03-14 | 2022-03-14 | Engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216788512U (en) |
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2022
- 2022-03-14 CN CN202220542840.0U patent/CN216788512U/en active Active
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