CN211693195U - Quick pressure-rise crankshaft pressure-stabilizing oil cavity - Google Patents
Quick pressure-rise crankshaft pressure-stabilizing oil cavity Download PDFInfo
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- CN211693195U CN211693195U CN202020275146.8U CN202020275146U CN211693195U CN 211693195 U CN211693195 U CN 211693195U CN 202020275146 U CN202020275146 U CN 202020275146U CN 211693195 U CN211693195 U CN 211693195U
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- oil pocket
- oil cavity
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Abstract
The utility model discloses mainly be applied to marine engine field, in particular to quick pressure rise bent axle steady voltage oil pocket, including main journal oil pocket and crank pin oil pocket, set up oblique oil pocket between main journal oil pocket and the crank pin oil pocket, oblique oil pocket sets up to oil storage steady voltage oil pocket in being located crank pin part, and oil storage steady voltage oil pocket communicates with oblique oil pocket and crank pin oil pocket respectively, sets up piston seal pin in the oil storage steady voltage oil pocket. The utility model discloses guarantee that the main shaft tile of diesel engine is lubricated, ensure that the machine oil of flow direction connecting rod is continuous, prevent the refluence, avoid the diesel engine the condition of changing the tile to appear, improved the reliability of diesel engine. Simple structure and reliable performance. And can be adapted to the design requirements of diesel engines with high strength indexes.
Description
Technical Field
The utility model relates to a play fast and press bent axle steady voltage oil pocket mainly is applied to marine engine field.
Background
The crankshaft is the most important kinematic pair of the marine diesel engine and is an important component for connecting the flywheel and the piston connecting rod assembly. At present, the phenomenon of bearing bush change caused by lubrication deficiency of engine oil between a plurality of crankshafts and a spindle bush appears in the market, so that the diesel engine cannot normally run, and even more, the connecting rod of the diesel engine is deformed and thrown out of the engine body to cause personal injury, so that how to effectively avoid the bearing bush change phenomenon is a matter which needs to be considered by technical personnel.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the quick pressure-starting crankshaft pressure-stabilizing oil cavity can quickly establish oil pressure between a crankshaft main journal and a main bearing bush at the initial operation stage of a diesel engine and reach the pressure value required by the lubrication of the bearing bush.
Quick pressure rise bent axle steady voltage oil pocket, including main journal oil pocket and crank pin oil pocket, set up oblique oil pocket between main journal oil pocket and the crank pin oil pocket, set up to oil storage steady voltage oil pocket to one side the oil pocket in being located crank pin part, oil storage steady voltage oil pocket communicates with oblique oil pocket and crank pin oil pocket respectively, sets up piston seal pin in the oil storage steady voltage oil pocket.
The inclined oil cavity is cylindrical, the inner diameter of the oil storage pressure stabilizing oil cavity is larger than that of the main body part of the inclined oil cavity, and the piston type seal pin corresponding to the oil storage pressure stabilizing oil cavity is cylindrical.
The main journal oil cavity and the crank pin oil cavity are both arranged to be cylindrical inner hole channels.
The design is improved aiming at an oil cavity inside a crankshaft, and the oil cavity mainly comprises a main journal oil cavity, a crank pin oil cavity, an inclined oil cavity, a piston type sealing pin and an oil storage pressure stabilizing cavity, oil pressure can be quickly established between a crankshaft main journal and a main bearing bush at the initial operation stage of the diesel engine to reach the pressure value required by the lubrication of the bearing bush, and meanwhile, the piston type sealing pin in the oil storage pressure stabilizing cavity is automatically adjusted in the operation process of the diesel engine to ensure that the oil pressure of the main bearing bush is stable, ensure that engine oil flowing to a connecting rod is continuous, and prevent. The design can effectively avoid the condition of faults of the cranked bearing bush and the diesel engine.
In the initial operation stage of the diesel engine, the piston type seal pin seals the crank pin oil cavity, so that engine oil flows into the oil cavity of the crank shaft main journal rapidly, oil pressure between a crank shaft and a main shaft bush is established rapidly, the piston type seal pin moves upwards after the oil pressure meets the specified requirements, and the engine oil passes through the inclined oil cavity and the crank pin oil cavity to reach the positions of a connecting rod big end bearing bush, a connecting rod small end bush and the like, and the oil pressure is established to ensure lubrication. During the operation of the diesel engine, if the oil pressure between the crankshaft and the main shaft bushing changes, the oil pressure can be automatically adjusted through the piston type sealing pin in the oil storage pressure stabilizing cavity so as to ensure the oil pressure between the crankshaft and the main shaft bushing to be stable; if pressure is low excessively, piston seal pin descends, seals the crank pin oil pocket, preferentially guarantees the oil pressure between bent axle and the main shaft bush to prevent the interior machine oil refluence of connecting rod, can effectively avoid the bent axle to appear changing the tile phenomenon through this design.
The utility model has the advantages that:
the lubrication of the main shaft bush of the diesel engine is ensured, the machine oil flowing to the connecting rod is ensured to be continuous, the backflow is prevented, the bush-changing condition of the diesel engine is avoided, and the reliability of the diesel engine is improved. Simple structure and reliable performance. And can be adapted to the design requirements of diesel engines with high strength indexes.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. an inclined oil chamber; 2. a crank pin oil chamber; 3. a piston seal pin; 4. an oil storage pressure stabilizing oil cavity; 5. the main journal oil cavity.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1, quick pressure rise bent axle steady voltage oil pocket, including trunnion oil pocket 5 and crank pin oil pocket 2, set up oblique oil pocket 1 between trunnion oil pocket 5 and the crank pin oil pocket 2, oblique oil pocket 1 sets up to oil storage steady voltage oil pocket 4 in being located the crank pin part, oil storage steady voltage oil pocket 4 communicates with oblique oil pocket 1 and crank pin oil pocket 2 respectively, sets up piston seal pin 3 in the oil storage steady voltage oil pocket 4. The inclined oil cavity 1 is cylindrical, the inner diameter of the oil storage pressure stabilizing oil cavity 4 is larger than that of the main body part of the inclined oil cavity 1, and the piston type seal pin 3 is cylindrical corresponding to the oil storage pressure stabilizing oil cavity 4. The main journal oil cavity 5 and the crank pin oil cavity 2 are both arranged into cylindrical inner hole channels.
At the initial stage of operation of the diesel engine, the piston type seal pin 3 seals the crank pin oil cavity 2, so that engine oil rapidly flows into the crank shaft main journal oil cavity 5, oil pressure between a crank shaft and a main shaft bush is rapidly established, the piston type seal pin 3 moves upwards after the oil pressure meets the specified requirements, and the engine oil passes through the inclined oil cavity 1, the crank pin oil cavity 2 to a connecting rod large-end bearing bush, a connecting rod small-end bushing and the like, and the oil pressure is established to ensure lubrication. In the operation process of the diesel engine, if the oil pressure between the crankshaft and the main shaft bushing changes, the oil pressure can be automatically adjusted through the piston type seal pin 3 in the oil storage pressure stabilizing cavity, so that the oil pressure between the crankshaft and the main shaft bushing is ensured to be stable; if pressure is low excessively, piston seal pin 3 descends, seals crank pin oil pocket 2, preferentially guarantees the oil pressure between bent axle and the main shaft bush to prevent the interior machine oil refluence of connecting rod, can effectively avoid the bent axle to appear changing the tile phenomenon through this design. Just the utility model discloses according to figure 1 design theory sample trial-manufacturing has been accomplished to accomplish the installation and try on.
Claims (3)
1. The utility model provides a quick pressure rise bent axle steady voltage oil pocket which characterized in that: the oil storage and pressure stabilization oil cavity comprises a main journal oil cavity (5) and a crank pin oil cavity (2), an inclined oil cavity (1) is arranged between the main journal oil cavity (5) and the crank pin oil cavity (2), the inclined oil cavity (1) is arranged in the crank pin part to form an oil storage and pressure stabilization oil cavity (4), the oil storage and pressure stabilization oil cavity (4) is respectively communicated with the inclined oil cavity (1) and the crank pin oil cavity (2), and a piston type sealing pin (3) is arranged in the oil storage and pressure stabilization oil cavity (4).
2. The rapid rise crankshaft pressure stabilizing oil gallery of claim 1, further comprising: the inclined oil cavity (1) is cylindrical, the inner diameter of the oil storage pressure stabilizing oil cavity (4) is larger than that of the main body part of the inclined oil cavity (1), and the piston type seal pin (3) is cylindrical corresponding to the oil storage pressure stabilizing oil cavity (4).
3. The rapid rise crankshaft pressure stabilizing oil gallery of claim 1, further comprising: the main journal oil cavity (5) and the crank pin oil cavity (2) are both arranged to be cylindrical inner hole channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275146.8U CN211693195U (en) | 2020-03-09 | 2020-03-09 | Quick pressure-rise crankshaft pressure-stabilizing oil cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020275146.8U CN211693195U (en) | 2020-03-09 | 2020-03-09 | Quick pressure-rise crankshaft pressure-stabilizing oil cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211693195U true CN211693195U (en) | 2020-10-16 |
Family
ID=72779953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020275146.8U Active CN211693195U (en) | 2020-03-09 | 2020-03-09 | Quick pressure-rise crankshaft pressure-stabilizing oil cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211693195U (en) |
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2020
- 2020-03-09 CN CN202020275146.8U patent/CN211693195U/en active Active
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