CN210599914U - Elastic damping coupling of diesel engine - Google Patents
Elastic damping coupling of diesel engine Download PDFInfo
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- CN210599914U CN210599914U CN201921311030.9U CN201921311030U CN210599914U CN 210599914 U CN210599914 U CN 210599914U CN 201921311030 U CN201921311030 U CN 201921311030U CN 210599914 U CN210599914 U CN 210599914U
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Abstract
The utility model relates to a diesel engine technical field provides a diesel engine elastic damping shaft coupling. The damping coupling of the diesel engine is provided with a circular flange and a circular side plate; the circular flange is sleeved on the engine crankshaft; a plurality of middle blocks which are uniformly distributed along the circumference are arranged between the circular flange and the circular side plate; a reed group is arranged between two adjacent middle blocks; the front end of the coupling spline shaft penetrates through the circular side plate, and a transmission gear ring is sleeved at the front end of the coupling spline shaft; the center of the coupling spline shaft is provided with an axial oil inlet channel; an oil inlet pipe is arranged in the axial oil inlet channel; one end of the oil inlet pipe is in threaded connection with the crankshaft of the engine, and the other end of the oil inlet pipe is positioned in the axial oil inlet channel; the coupling spline shaft is also provided with a radial oil duct communicated with the axial oil inlet channel; the radial oil duct is communicated with the cross-shaped oil duct on the circular side plate. The utility model discloses make the elastic damping shaft coupling reach best operating condition, born stronger axial impact force.
Description
Technical Field
The utility model relates to a diesel engine technical field, concretely relates to diesel engine elastic damping shaft coupling.
Background
In a high-power high-speed diesel engine unit, an elastic damping coupling is usually installed at a power output end of a diesel engine, frequency modulation and vibration avoidance are realized through the elasticity of reeds, the vibration peak value is weakened through damping flow of lubricating oil in the coupling, a large amount of heat is generated, if the heat cannot be taken away in time, the optimal working state of the coupling is influenced, and further the working efficiency and performance exertion of the coupling are reduced. Therefore, the diesel engine elastic damping coupling joint has to have good lubricating, supporting and shock-resisting functions.
The content of the content is currently determined from published materials, such as authorization notice numbers: CN 101915275A "elastic damping shaft coupling", this utility model elastic damping shaft coupling has solved wearing and tearing and the oil leak problem that appear being connected of shaft coupling and cardan shaft, diesel engine effectively, has improved the performance and the life-span of shaft coupling itself, has strengthened driving system's stationarity of operation, reliability and security, but does not introduce lubricating system. CN 101117981A "diesel engine elastic coupling", this utility model through mainly adopting the axial lubrication, can not fine lubricated elastic damping coupling radial direction, this utility model sets up the plug, if the elastic damping coupling has the air, need demolish peripheral equipment and maintain, the maintenance type is relatively poor. CN 201916655U an elastic damping coupling, the utility model aims to provide an elastic damping coupling to solve the problem of bearing loss blocks of diesel engines and generating sets caused by axial force generated by pressure oil supply to the coupling, which is different from the aim and the method of the utility model; in the traditional elastic coupling, an air-release screw plug is designed on a circular side plate, if the elastic coupling is filled with air, parts except the elastic coupling need to be disassembled, and the maintenance workload is increased; the traditional elastic coupling lubricating oil is not thrown out by centrifugal force, but is discharged by oil pressure, so that the elastic coupling cannot be lubricated and cooled well in the radial direction.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model aims at providing a diesel engine damping elastic coupling.
The utility model discloses a its practical novel task is accomplished to following technical scheme:
a diesel engine damping coupling is positioned between a bearing I and a bearing II; the bearing I is sleeved on the crankshaft of the engine; the diesel engine damping coupling is provided with a circular flange and a circular side plate; the circular flange is sleeved on the engine crankshaft; the circular side plate is positioned on one side of the circular flange, which is far away from the crankshaft of the engine, and is arranged in parallel to the circular flange; a plurality of middle blocks which are uniformly distributed along the circumference are arranged between the circular flange and the circular side plate; a reed group used for reducing the high-frequency vibration of the power of the engine is arranged between two adjacent middle blocks; fastening rings for limiting the middle blocks and the reed groups are arranged on the outer sides of the middle blocks and the reed groups; a lubricating space is formed among the middle blocks, the reed groups, the fastening rings, the circular flanges and the circular side plates;
the center of the elastic damping coupling is provided with a through hole for the coupling spline shaft to pass through; the through hole is composed of a step through hole positioned in the middle of the circular flange and a step through hole positioned in the middle of the circular side plate;
the front end of the coupling spline shaft penetrates through the circular side plate, and a transmission gear ring meshed with the coupling spline shaft is sleeved at the front end of the coupling spline shaft; the transmission gear ring is positioned between the circular side plate and the circular flange, is spliced and combined with the plurality of spring plate groups into a whole, and absorbs the power of the high-frequency vibration engine through the spring plate groups and transmits the power to the coupling spline shaft; the middle part of the inner wall surface of the transmission gear ring is axially meshed with the coupling spline; the teeth divide a cavity between the circular flange and the circular side plate into a left part and a right part; the center of one side of the circular side plate, which is far away from the circular flange, is provided with an annular boss which protrudes outwards; the bearing II is sleeved on the annular boss; the bearing is assembled in a bearing cup, and the bearing cup is fixed on a coupling spline shaft through an end cover for sealing the elastic damping coupling; a gap is formed between the end cover and the annular boss;
the center of the coupling spline shaft is provided with an axial oil inlet channel; an oil inlet pipe is arranged in the axial oil inlet channel; one end of the oil inlet pipe is in threaded connection with the crankshaft of the engine, and the other end of the oil inlet pipe is positioned in the axial oil inlet channel; the oil inlet pipe is internally provided with a through hole which is communicated with the axial oil inlet channel; the coupling spline shaft is also provided with a radial oil duct communicated with the axial oil inlet channel; the radial oil duct is communicated with a cross-shaped oil duct on the circular side plate, and the cross-shaped oil duct is provided with a horizontal oil duct communicated with a gap between the bearing and the end cover and a vertical slideway used for lubricating the bearing II; the gap between the end cover and the circular side plate is communicated with the vertical slideway and the horizontal slideway; the lubricating oil flows into a gap between the bearing and the end cover through the horizontal slideway, when the lubricating oil is full of the whole space, the lubricating oil flows through the bearing to lubricate and lubricate the bearing under the action of pressure, and the lubricating oil is sprayed to the bearing II through the vertical slideway; the coupling spline shaft is provided with an axial oil return hole; the axial oil return hole is positioned at the upper part of the coupling spline shaft and communicated with a gap between the end cover and the circular side plate;
the circular side plate is also provided with an oblique oil duct communicated with the horizontal slideway; the oblique slideway is communicated with a gap between the circular side plate and the middle block, and lubricating oil lubricates and cools the elastic damping coupler through an oblique oil passage on the side plate; the circular side plate is provided with an oil outlet, and the oil outlet is of a structure with a small middle part and large two ends; the transmission gear ring is provided with an oil return hole communicated with a cavity on the right side between the circular flange and the circular side plate;
when the diesel engine works, the elastic damping coupling rotates, and lubricating oil flows out of the coupling through the oil outlet and enters a diesel engine lubricating oil system under the action of centrifugal force; as the intercepting area of the hole at the middle position of the oil outlet of the circular side plate is small, the flow resistance is large when the lubricating oil flows out, only one part of the lubricating oil flows out, the other part of the lubricating oil flows out of the oil outlet hole of the transmission gear ring along the radial direction, the lubricating oil is sprayed and lubricates the meshing teeth, the lubricating oil flows into the space at the left side of the spline shaft of the coupling joint, lubricates the meshing teeth and takes away the generated heat, when the height of the lubricating oil exceeds the oil passage of the spline shaft of the coupling joint, the lubricating oil enters the lubricating system of the diesel,
and a crankshaft oil return hole is formed in the engine crankshaft corresponding to the bearing I, and lubricating oil is sprayed or splashed to lubricate the bearing through the crankshaft oil return hole.
The middle block is provided with a groove;
and a gap is reserved between the reed set and the circular flange and between the reed set and the circular side plate.
And the bearing I and the bearing II are both tapered roller bearings.
The utility model provides a diesel engine elastic damping shaft coupling, the lubricating oil that the oil gallery of drive ring gear flows out sprays on the shaft coupling integral key shaft and lubricates the meshing tooth, the lubricating oil flows into the space on the left side of the shaft coupling integral key shaft, the lower end of the meshing tooth is soaked in the lubricating oil, lubricate the meshing tooth at the other end and take away the heat generated by the meshing of the generated tooth, when the lubricating oil height exceeds the oil gallery of the shaft coupling integral key shaft, the lubricating oil enters the diesel engine lubricating system through the oil gallery of the shaft coupling integral key shaft,
the middle block is provided with a groove, a gap is reserved between the reed group and the circular flange as well as between the reed group and the circular side plate, and lubricating oil is filled in the whole space through the groove and the gap, so that the elastic damping coupling achieves the optimal working state.
The tapered roller bearings are arranged at two ends of the elastic damping coupling joint, so that the elastic damping coupling joint can bear the larger weight and bear stronger axial impact force.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the middle elastic damping coupling of the present invention.
Fig. 3 is a cross-sectional view taken along line B-B of fig. 2.
In the figure: 1. an engine crankshaft; 2. An oil inlet pipe; 3. a bearing I; 4. A circular flange; 5. a bolt I; 6. a fastening ring; 7. an oil outlet hole; 8 reed groups and a flywheel; 9. an oil return hole 10 and a bolt II; 11. an end cap; 12. an axial oil return hole; 13. an O-shaped sealing ring I; 14. a coupling spline shaft; 15. an O-shaped sealing ring II; 16. a bearing II; 17. a bearing cup; 18. a transmission gear ring; 19. A middle block; 20. A circular side plate; 21. crankshaft oil return holes 22, an axial oil inlet channel 23, a radial oil channel 24 and an oblique oil channel.
Detailed Description
The invention is described in connection with the accompanying drawings and the embodiments:
as shown in figure 1, the diesel engine damping coupling is located between a bearing I3 and a bearing II 13; the bearing 2I is sleeved on the engine crankshaft 1; the diesel engine damping coupling is provided with a circular flange 4 and a circular side plate 20; the circular flange 4 is sleeved on the engine crankshaft 1; the circular side plate 20 is positioned on one side of the circular flange, which is far away from the crankshaft of the engine, and is arranged in parallel to the circular flange 4; a plurality of middle blocks 19 which are uniformly distributed along the circumference are arranged between the circular flange 4 and the circular side plate 20; a reed group 8 for reducing the high-frequency vibration of the power of the engine is arranged between two adjacent middle blocks 19; the reed group adopts the structure existing in the prior art, and the description is not repeated; the outer sides of the middle blocks 19 and the reed groups 8 are provided with fastening rings 6 for limiting the middle blocks and the reed groups; the circular flange 4 is provided with a plurality of through holes for bolts I5 to pass through, the uniformly distributed reed groups 6 divided by the fixed middle block 19 are clamped by the circular flange 4 and the circular side plate 20 through the bolts I5, and one end of each reed group 6 is radially positioned by a fastening ring 6; a lubricating space is formed among the middle blocks 19, the reed groups 9, the fastening ring 3, the circular flange 4 and the circular side plate 20;
the center of the elastic damping coupling is provided with a through hole for the coupling spline shaft to pass through; the through hole is composed of a step through hole positioned in the middle of the circular flange and a step through hole positioned in the middle of the circular side plate; the front end of the coupling spline shaft 14 passes through the circular side plate 20, and a transmission gear ring 18 in tooth engagement with the circular side plate is sleeved at the front end of the coupling spline shaft; the transmission gear ring 18 is positioned between the circular side plate 20 and the circular flange 4, is spliced and combined with the plurality of reed groups 8 into a whole, and absorbs the power of the engine with high-frequency vibration through the reed groups 8 and transmits the power to the coupling spline shaft; the middle part of the inner wall surface of the transmission gear ring 18 is axially meshed with the coupling spline; the teeth divide the cavity between the circular flange 4 and the circular side plate 20 into a left part and a right part; the center of one side of the circular side plate, which is far away from the circular flange, is provided with an annular boss which protrudes outwards; the bearing II 16 is sleeved on the annular boss; said bearing is fitted in a bearing cup 17, said bearing cup being secured to the coupling spline shaft 14 by an end cap for sealing the elastomeric damping coupling; a gap is formed between the end cover and the annular boss;
the center of the coupling spline shaft is provided with an axial oil inlet channel 22; an oil inlet pipe 2 is arranged in the axial oil inlet channel; one end of the oil inlet pipe 2 is in threaded connection with the engine crankshaft 1, and the other end of the oil inlet pipe is positioned in the axial oil inlet channel; a through hole is formed in the oil inlet pipe 2 and is communicated with the axial oil inlet channel; the coupling spline shaft is also provided with a radial oil duct 23 communicated with the axial oil inlet channel; the radial oil duct 23 is communicated with a cross-shaped oil duct on the circular side plate, and the cross-shaped oil duct is provided with a horizontal oil duct communicated with a gap between the bearing and the end cover and a vertical slideway used for lubricating the bearing II; the gap between the end cover and the circular side plate is communicated with the vertical slideway and the horizontal slideway; the lubricating oil flows into a gap between the bearing and the end cover through the horizontal slideway, when the lubricating oil is full of the whole space, the lubricating oil flows through the bearing to lubricate and lubricate the bearing under the action of pressure, and the lubricating oil is sprayed to the bearing II 16 through the vertical slideway, and because the bearing cup and the circular side plate are designed with a gap, two paths of lubricating oil are mixed and flow through the gap to flow into a lubricating oil system of the diesel engine; the coupling spline shaft is provided with an axial oil return hole; the axial oil return hole is positioned at the upper part of the coupling spline shaft and communicated with a gap between the end cover and the circular side plate;
the circular side plate is also provided with an inclined oil duct 24 communicated with the horizontal slideway; the inclined slide way 24 is communicated with a gap between the circular side plate 20 and the middle block 19, and lubricating oil lubricates and cools the elastic damping coupler through an inclined oil passage on the side plate; the circular side plate is provided with an oil outlet 7, and the oil outlet 7 is of a structure with a small middle part and large two ends; the transmission gear ring is provided with an oil return hole 9 communicated with a cavity on the right side between the circular flange and the circular side plate;
when the diesel engine works, the elastic damping coupling rotates, and lubricating oil flows out of the coupling through the oil outlet and enters a diesel engine lubricating oil system under the action of centrifugal force; as the intercepting area of the hole at the middle position of the oil outlet of the circular side plate is small, the flow resistance is large when the lubricating oil flows out, only one part of the lubricating oil flows out, the other part of the lubricating oil flows out of the oil outlet hole of the transmission gear ring along the radial direction, the lubricating oil is sprayed and lubricates the meshing teeth, the lubricating oil flows into the space at the left side of the spline shaft of the coupling joint, lubricates the meshing teeth and takes away the generated heat, when the height of the lubricating oil exceeds the oil passage of the spline shaft of the coupling joint, the lubricating oil enters the lubricating system of the diesel,
and a crankshaft oil return hole is formed in the engine crankshaft corresponding to the bearing I, and lubricating oil is sprayed or splashed to lubricate the bearing through the crankshaft oil return hole.
The middle block is provided with a groove;
and a gap is reserved between the reed set and the circular flange and between the reed set and the circular side plate.
And the bearing I3 and the bearing II 16 are both tapered roller bearings.
In order to prevent the leakage of lubricating oil between parts, an O-shaped sealing ring I13 and an O-shaped sealing ring II 16 are respectively designed at the joint of the oil inlet pipe 2 and the coupling spline shaft 14, and the joint of the coupling spline shaft 14 and the circular side plate 20, so that the sealing property and the reliability of the operation of the system are better ensured.
When the engine works normally, the oil duct of the crankshaft 1 of the engine is filled with lubricating oil, and a part of the lubricating oil is sprayed or splashed through the crankshaft oil return hole 21 to lubricate the bearing II 3.
A through hole is formed in the middle of the oil inlet pipe 2, threads are formed in the right end of the oil inlet pipe 2 and are tightly backed with an engine crankshaft, lubricating oil penetrates through the oil inlet pipe to reach a 14-oil duct of a coupling spline shaft, a radial oil duct is formed in the coupling spline shaft, the lubricating oil flows into the elastic damping coupling joint oil duct through the radial oil duct, an oil duct is formed in the coupling spline shaft, and the other end of the oil inlet pipe 2 is located in an axial oil inlet channel in the center of the coupling spline shaft; the coupling spline shaft 14 is provided with a radial oil duct communicated with the axial oil inlet channel; the radial oil duct is communicated with an oil duct on the side plate of the elastic damping coupler; the oil passage on the circular side plate is a cross-shaped oil passage; the axial oil duct of the cross-shaped oil duct is communicated with the bearing, one path of lubricating oil firstly enters the right space of the tapered roller bearing II 16 along the axial oil duct, when the diesel engine normally works, the lubricating oil fills the whole space, under the action of oil pressure, the lubricating oil penetrates and lubricates the bearing II 16, the interception area of the other path of axial oil duct is small, the lubricating oil is directly sprayed to the tapered roller bearing II 16, and then the lubricating oil and the other path of lubricating oil flow out of the elastic damper along a gap between the bearing cup 17 and the circular side plate 20 and enter a lubricating system of the diesel engine;
the horizontal oil duct of cross oil duct passes through the slant oil duct on the curb plate and forms to the lubricated structure of elastic damping shaft coupling, 19 marginal designs on the middle block have grooves, circular flange 4 and circular curb plate 20 are transition fit at axial and reed, and lubricating oil can pass through the groove of middle block and reed group axial gap are full of elastic damper confined space, and the diesel engine during normal work, lubricating oil get into diesel engine lubricating system through circular curb plate oil gallery 7 under the effect of centrifugal force, because the area of damming at 7 both ends of circular curb plate oil gallery is greater than middle area of damming far away, have hydrodynamics knowledge to know: under the condition that the fluid flow is not changed, the flow velocity is inversely proportional to the interception area, the flow resistance is quadratic to the flow velocity, the interception area is quadratically related to the resistance, the middle interception area generates large resistance, only one part of lubricating oil flows out of the circular side plate oil return hole 7, the other part of lubricating oil radially passes through the transmission gear ring oil return hole 9 and sprays the coupling spline shaft 14 to lubricate the meshing teeth, the lubricating oil flows into and is filled in the right space of the engine crankshaft 1, the meshing teeth on the other side are lubricated, the heat generated by meshing of the teeth is taken away, and the lubricating oil flows into a diesel engine lubricating system through the coupling spline shaft oil return hole 12.
The utility model discloses arrange respectively at elastic damping shaft coupling festival both sides and arrange bearing I3 and bearing II 16, better bear elastic damper weight and axial load and strike.
Claims (4)
1. An elastic damping coupling of a diesel engine is characterized in that; the elastic damping coupling of the diesel engine is positioned between the bearing I and the bearing II; the bearing I is sleeved on the crankshaft of the engine; the elastic damping coupling of the diesel engine is provided with a circular flange and a circular side plate; the circular flange is sleeved on the engine crankshaft; the circular side plate is positioned on one side of the circular flange, which is far away from the crankshaft of the engine, and is arranged in parallel to the circular flange; a plurality of middle blocks which are uniformly distributed along the circumference are arranged between the circular flange and the circular side plate; a reed group used for reducing the high-frequency vibration of the power of the engine is arranged between two adjacent middle blocks; fastening rings for limiting the middle blocks and the reed groups are arranged on the outer sides of the middle blocks and the reed groups; a lubricating space is formed among the middle blocks, the reed groups, the fastening rings, the circular flanges and the circular side plates;
the center of the elastic damping coupling of the diesel engine is provided with a through hole for the spline shaft of the coupling to pass through; the through hole is composed of a step through hole positioned in the middle of the circular flange and a step through hole positioned in the middle of the circular side plate;
the front end of the coupling spline shaft penetrates through the circular side plate, and a transmission gear ring meshed with the coupling spline shaft is sleeved at the front end of the coupling spline shaft; the transmission gear ring is positioned between the circular side plate and the circular flange, is spliced and combined with the plurality of spring plate groups into a whole, and absorbs the power of the high-frequency vibration engine through the spring plate groups and transmits the power to the coupling spline shaft; the middle part of the inner wall surface of the transmission gear ring is axially meshed with the coupling spline; the teeth divide a cavity between the circular flange and the circular side plate into a left part and a right part; the center of one side of the circular side plate, which is far away from the circular flange, is provided with an annular boss which protrudes outwards; the bearing II is sleeved on the annular boss; the bearing is assembled in a bearing cup, and an end cover used for sealing the elastic damping coupling is arranged outside the bearing cup; a gap is formed between the end cover and the circular side plate;
the center of the coupling spline shaft is provided with an axial oil inlet channel; an oil inlet pipe is arranged in the axial oil inlet channel; one end of the oil inlet pipe is in threaded connection with the crankshaft of the engine, and the other end of the oil inlet pipe is positioned in the axial oil inlet channel; the oil inlet pipe is internally provided with a through hole which is communicated with the axial oil inlet channel; the coupling spline shaft is also provided with a radial oil duct communicated with the axial oil inlet channel; the radial oil duct is communicated with a cross-shaped oil duct on the circular side plate, and the cross-shaped oil duct is provided with a horizontal oil duct communicated with a gap between the bearing and the end cover and a vertical slideway used for lubricating the bearing II; the gap between the end cover and the circular side plate is communicated with the vertical slideway and the horizontal slideway;
the circular side plate is also provided with an oblique oil duct communicated with the horizontal slideway; the oblique slideway is communicated with a gap between the circular side plate and the middle block, and lubricating oil lubricates and cools the elastic damping coupler through an oblique oil passage on the side plate; the circular side plate is provided with an oil outlet, and the oil outlet is of a structure with a small middle part and large two ends; and the transmission gear ring is provided with an oil return hole communicated with a cavity on the right side between the circular flange and the circular side plate.
2. A diesel engine elastomeric damping coupling as claimed in claim 1; the middle block is provided with a groove.
3. A diesel engine elastomeric damping coupling as defined in claim 1, wherein: and a gap is reserved between the reed set and the circular flange and between the reed set and the circular side plate.
4. A diesel engine elastomeric damping coupling as defined in claim 1, wherein: and the bearing I and the bearing II are both tapered roller bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311030.9U CN210599914U (en) | 2019-08-14 | 2019-08-14 | Elastic damping coupling of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311030.9U CN210599914U (en) | 2019-08-14 | 2019-08-14 | Elastic damping coupling of diesel engine |
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| Publication Number | Publication Date |
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| CN210599914U true CN210599914U (en) | 2020-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921311030.9U Active CN210599914U (en) | 2019-08-14 | 2019-08-14 | Elastic damping coupling of diesel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375001A (en) * | 2019-08-14 | 2019-10-25 | 河南柴油机重工有限责任公司 | A kind of diesel engine elastomeric damping shaft coupling |
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2019
- 2019-08-14 CN CN201921311030.9U patent/CN210599914U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110375001A (en) * | 2019-08-14 | 2019-10-25 | 河南柴油机重工有限责任公司 | A kind of diesel engine elastomeric damping shaft coupling |
| CN110375001B (en) * | 2019-08-14 | 2024-03-15 | 河南柴油机重工有限责任公司 | Elastic damping coupling for diesel engine |
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