CN201916416U - Double-cylinder four-stroke outboard engine balance shaft system - Google Patents
Double-cylinder four-stroke outboard engine balance shaft system Download PDFInfo
- Publication number
- CN201916416U CN201916416U CN2011200061914U CN201120006191U CN201916416U CN 201916416 U CN201916416 U CN 201916416U CN 2011200061914 U CN2011200061914 U CN 2011200061914U CN 201120006191 U CN201120006191 U CN 201120006191U CN 201916416 U CN201916416 U CN 201916416U
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- Prior art keywords
- shaft
- gear
- balance shaft
- balance
- axle journal
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Abstract
The utility model discloses a double-cylinder four-stroke outboard engine balance shaft system, which belongs to a balance shaft system and is structurally characterized by comprising a balance shaft, a balance shaft gear, deep groove ball bearings and balance weights, wherein the balance shaft comprises a mid shaft neck, rotating shaft necks and a gear shaft neck; the rotating shaft necks are arranged at both ends of the mid shaft neck; the gear shaft neck is arranged between the mid shaft neck and the rotating shaft neck which is located at the lower end; the balance shaft gear is arranged on the gear shaft neck; the balance shaft gear is meshed with a crankshaft gear on a crankshaft; the deep groove ball bearings are respectively arranged on the rotating shaft necks at both ends of the balance shaft; the balance weights are arranged on the mid shaft neck; and the centers of gravity of the balance weights deviate from the rotating center of the balance shaft. The double-cylinder four-stroke outboard motor balance shaft system has the characteristics of avoiding the abrasion among engine parts, prolonging the service life of an engine and the reliability of the engine, effectively reducing the vibration and noise of the engine, improving the running comfortableness and the like.
Description
Technical field
The utility model relates to a kind of balance shaft system, especially a kind of twin-tub four-stroke machine outside balance shaft system.
Background technique
At present, along with the development of economy and technology, the yacht industry more and more is subjected to people's favor, and people are also more and more higher to the travelling comfort of travelling.But the twin-tub four-stroke machine outside majority on the Domestic market is not with balance sysmte, this motor in the course of the work because crankshaft operation can produce very big unbalance inertia force.This unbalanced force becomes cyclically-varying, acts on the wearing and tearing that can accelerate on the body between engine part, destroys the matching gap between the part, influences the performance and the life-span of motor.Simultaneously also can bring noise and vibration, influence the travelling comfort of motor, hand can be tired because of vibration during operation.Therefore the research of engine balance is very important project in the current engine technology.At present, good solution is not also arranged.
The model utility content
Technical assignment of the present utility model is to provide a kind of twin-tub four-stroke machine outside balance shaft system at above-mentioned deficiency of the prior art, this twin-tub four-stroke machine outside balance shaft system has the wearing and tearing of having avoided between engine part, the life-span and the reliability of motor have been improved, effectively reduce the vibration and the noise of motor, improved the characteristics of driving comfort.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises trunnion shaft, balance shaft gear, deep groove ball bearing and equilibrium block, described trunnion shaft comprises the middle part axle journal, pivot journal and gear axle journal, described pivot journal is arranged on the two ends of middle part axle journal, be provided with the gear axle journal between the pivot journal of described middle part axle journal and lower end, described balance shaft gear is arranged on the gear axle journal, described balance shaft gear is meshed with crankshaft gear on the bent axle, described deep groove ball bearing is separately positioned on the pivot journal at trunnion shaft two ends, described equilibrium block is arranged on the axle journal of middle part, its rotating center of the deviation of gravity center of described equilibrium block.
Described equilibrium block is two fan-shaped equilibrium blocks, is separately positioned on the same side of middle part axle journal.
Described two fan-shaped equilibrium blocks lay respectively at the centre of a cylinder crank piece and two cylinder crank piece, and described trunnion shaft is positioned at the left side of bent axle.
Its rotating center of its deviation of gravity center of middle part axle journal of described trunnion shaft, the center of gravity deflection of middle part axle journal is consistent with the center of gravity deflection of two fan-shaped equilibrium blocks.
Twin-tub four-stroke machine outside balance shaft system of the present utility model is compared with prior art, has following outstanding beneficial effect: avoided the wearing and tearing between engine part, the life-span and the reliability of motor have been improved, the vibration and the noise of motor have been effectively reduced, improve driving comfort, effectively utilized the space, made structure characteristics such as compactness more.
Description of drawings
Accompanying drawing 1 is the structural representation of twin-tub four-stroke machine outside balance shaft system;
Accompanying drawing 2 is structural representations of the trunnion shaft shown in Fig. 1;
Description of reference numerals: 1, deep groove ball bearing, 2, equilibrium block, 3, the middle part axle journal, 4, balance shaft gear, 5, the crank piece, 6, bent axle, 7, crankshaft gear, 8, pivot journal, 9, the gear axle journal.
Embodiment
Explain with reference to Figure of description 1 with below 2 pairs of twin-tub four-stroke machine outside balance shaft systems works of the present utility model of accompanying drawing.
Twin-tub four-stroke machine outside balance shaft system of the present utility model, its structure comprises trunnion shaft, balance shaft gear 4, deep groove ball bearing 1 and equilibrium block 2, described trunnion shaft comprises middle part axle journal 3, pivot journal 8 and gear axle journal 9, described pivot journal 8 is arranged on the two ends of middle part axle journal 3, be provided with gear axle journal 9 between the pivot journal 8 of described middle part axle journal 3 and lower end, described balance shaft gear 4 is arranged on the gear axle journal 9, described balance shaft gear 4 is meshed with crankshaft gear 7 on the bent axle 6, described deep groove ball bearing 1 is separately positioned on the pivot journal 8 at trunnion shaft two ends, described equilibrium block 2 is arranged on the axle journal 3 of middle part, its rotating center of the deviation of gravity center of described equilibrium block 2.
Described equilibrium block 2 is two fan-shaped equilibrium blocks, is separately positioned on the same side of middle part axle journal 3.
Described two fan-shaped equilibrium blocks 2 lay respectively at the centre of a cylinder crank piece 5 and two cylinder crank piece 5, and described trunnion shaft is positioned at the left side of bent axle 6.Both dwindled the centre distance between the crankshaft gear 7 on balance shaft gear 4 and the bent axle 6, do not interfered again with other parts.
Middle part axle journal 3 its rotating centers of its deviation of gravity center of described trunnion shaft, the center of gravity deflection of middle part axle journal 3 is consistent with the center of gravity deflection of two fan-shaped equilibrium blocks 2.In the intensity that guarantees trunnion shaft, can reach the counterweight effect again, make the quality and the spatial structure minimum of trunnion shaft.
Balance shaft gear 4 is meshed transferring power with crankshaft gear 7 on the bent axle 6, and the driven equilibrium axle rotates.The pivot journal 8 of trunnion shaft by two ends cooperates with deep groove ball bearing 1 and places on cylinder block and the crankcase.Trunnion shaft is positioned at the left side of bent axle 6, has effectively utilized the space, makes structure compact more.
Except that the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (4)
1. twin-tub four-stroke machine outside balance shaft system, it is characterized in that: comprise trunnion shaft, balance shaft gear, deep groove ball bearing and equilibrium block, described trunnion shaft comprises the middle part axle journal, pivot journal and gear axle journal, described pivot journal is arranged on the two ends of middle part axle journal, be provided with the gear axle journal between the pivot journal of described middle part axle journal and lower end, described balance shaft gear is arranged on the gear axle journal, described balance shaft gear is meshed with crankshaft gear on the bent axle, described deep groove ball bearing is separately positioned on the pivot journal at trunnion shaft two ends, described equilibrium block is arranged on the axle journal of middle part, its rotating center of the deviation of gravity center of described equilibrium block.
2. twin-tub four-stroke machine outside balance shaft system according to claim 1, it is characterized in that: described equilibrium block is two fan-shaped equilibrium blocks, is separately positioned on the same side of middle part axle journal.
3. twin-tub four-stroke machine outside balance shaft system according to claim 2, it is characterized in that: described two fan-shaped equilibrium blocks lay respectively at the centre of a cylinder crank piece and two cylinder crank piece, and described trunnion shaft is positioned at the left side of bent axle.
4. twin-tub four-stroke machine outside balance shaft system according to claim 3 is characterized in that: its rotating center of its deviation of gravity center of middle part axle journal of described trunnion shaft, the center of gravity deflection of middle part axle journal is consistent with the center of gravity deflection of two fan-shaped equilibrium blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200061914U CN201916416U (en) | 2011-01-11 | 2011-01-11 | Double-cylinder four-stroke outboard engine balance shaft system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200061914U CN201916416U (en) | 2011-01-11 | 2011-01-11 | Double-cylinder four-stroke outboard engine balance shaft system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201916416U true CN201916416U (en) | 2011-08-03 |
Family
ID=44416213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200061914U Expired - Lifetime CN201916416U (en) | 2011-01-11 | 2011-01-11 | Double-cylinder four-stroke outboard engine balance shaft system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201916416U (en) |
-
2011
- 2011-01-11 CN CN2011200061914U patent/CN201916416U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110803 |
|
| CX01 | Expiry of patent term |