CN2572017Y - Balance vibration reducing mechanism for single-cylinder four-stroke gasoline engine of motorcycle - Google Patents
Balance vibration reducing mechanism for single-cylinder four-stroke gasoline engine of motorcycle Download PDFInfo
- Publication number
- CN2572017Y CN2572017Y CN 02253189 CN02253189U CN2572017Y CN 2572017 Y CN2572017 Y CN 2572017Y CN 02253189 CN02253189 CN 02253189 CN 02253189 U CN02253189 U CN 02253189U CN 2572017 Y CN2572017 Y CN 2572017Y
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- China
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- trunnion shaft
- balance
- cylinder
- gasoline engine
- driving gear
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- 230000035939 shock Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 description 6
- 235000008526 Galium odoratum Nutrition 0.000 description 4
- 244000258271 Galium odoratum Species 0.000 description 3
- 210000000707 wrist Anatomy 0.000 description 2
- 244000186140 Asperula odorata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a balance vibration reducing mechanism for a single-cylinder four-stroke gasoline engine of a motorcycle. The balance vibration reducing mechanism for a single-cylinder four-stroke gasoline engine of a motorcycle is used for generating whole rotary inertia force and first stage reciprocating inertial force when a piston part of a connecting rod of a crankshaft of a balance engine moves. A balance shaft driving gear which follows a crankshaft to rotate is arranged on the nearby position one end of a crankshaft of a crank which is extended outside a right crankshaft box body and is provided with a clutch driving gear on the basis that a left crank and a right crank which are connected with the connecting rod are respectively counterpoised. A balance shaft driven gear is arranged on a balance shaft. The balance shaft driven gear and the balance shaft driving gear are engaged. The balance shaft is driven to rotate by the balance shaft driven gear. Compared with the original engine without a balance shaft, the vibration reduced by the balance vibration reducing mechanism for a single-cylinder four-stroke gasoline engine of a motorcycle averagely achieves more than 50 percents, and the noise of the balance vibration reducing mechanism for a single-cylinder four-stroke gasoline engine of a motorcycle is lowered. The change of the integral structure of an engine is not large. The utility model has the advantages of convenient disassembly, simple structure, safety, strong versatility, etc.
Description
Technical field
The utility model relates to the compensation of inertial force, and especially motorcycle engine compensates the inertial force device of crankshaft system by bent axle, connecting rod and configuration thereof.
Background technique
At present, single-cylinder four-stroke post rod type motorcycle gasoline engine, the reciprocal inertia force that produces during not in addition to its engine crankshaft connecting rod piston motion is taked balanced measure, only relies on the counterweight of crank to finish.But, during the work of crankshaft-link rod piston element, can produce rotating inertia force and reciprocal inertia force, the quality that the former is mainly rotated around crankshaft center line by connnecting rod big end and crank pin etc. is produced dirt, and the latter is produced along the reciprocating quality of cylinder body axis by component such as connecting rod small end, wrist pin and pistons, reciprocal inertia force is single order reciprocal inertia force and two-stage reciprocating inertia force sum, and two-stage reciprocating inertia force is less, does not generally consider.Outside the counterweight decapacitation complete equilibrium rotating inertia force on the crank, only can balance about 1/2nd single order reciprocal inertia force, remaining single order reciprocal inertia force exists, and brings vibrations, noise etc., influences engine operation.
The model utility content
For solving the above problems, the utility model provides a kind of balance shock mechanism at single-cylinder four-stroke post rod type motorcycle gasoline engine, the whole rotating inertia forces and the single order reciprocal inertia force that produce during this type of engine crankshaft connecting rod piston componental movement of balance, thus the vibration and the noise of motor and car load reduced.
Scheme of the present utility model is: its left and right crank that is connected with connecting rod is made on the bent axle respectively, and place the chamber of forming by left and right crankcases, this bent axle stretch out the trunnion shaft driving gear that is equipped with near the bent axle of position that right crankcase one end is equipped with the clutch driving gear with its rotation; The trunnion shaft driven gear is arranged on the trunnion shaft, this trunnion shaft driven gear and the engagement of aforementioned trunnion shaft driving gear, the trunnion shaft driven gear drives trunnion shaft and rotates; Trunnion shaft is installed between aforementioned left crankcase and right crankcase, and support with bearing at these trunnion shaft two ends, and an end stretches out right crankcase, and external part is installed the trunnion shaft driven gear; The radial dimension equal and opposite in direction of trunnion shaft driven gear and trunnion shaft driving gear.
Working principle is as follows, adding counterweight on the crank can balance rotating inertial force and 1/2nd times single order reciprocal inertia force, remaining single order reciprocal inertia force comes balance by the trunnion shaft that eccentrically mounted weight is arranged, this trunnion shaft is around the axis backward rotation that parallels with crankshaft center line, rotate with the bent axle direction of rotation but big or small identical, the inertial force of its generation is balancing each other with inertial force that the cylinder block central axis parallels on the straight line.Rotate with the bent axle direction of rotation but velocity magnitude is identical for making, bent axle drives the trunnion shaft rotation by two numbers of teeth and identical trunnion shaft driving gear and the trunnion shaft driven gear of modulus.
After having adopted the utility model, its beneficial effect is, is not with the trunnion shaft motor to compare to reduce to vibrate average out to more than 50% with former, and noise reduces; The motor overall structure changes little, because driving and driven arrangement of gears is in the right case outside, convenient disassembly has advantages such as simple in structure, safe and reliable, highly versatile.
Description of drawings
Below in conjunction with accompanying drawing and specific embodiments the utility model is described in further detail:
Fig. 1 is existing scheme schematic representation.
Fig. 2 is the structural profile view of scheme of the present utility model.
Fig. 3 is the right side view of Fig. 2 scheme of the present utility model.
Among the figure: 1. right crankcase, 2. bent axle, 3. connecting rod, 4. right crank, 5. trunnion shaft driving gear, 6. clutch driving gear, 9. trunnion shaft driven gear, 10. floor clip, 11. nuts, 14. right crankcase cover, 17. bearing, 18. trunnion shafves, 20. left crankcases lid, 21. left crank, 23. left crankcases.
Embodiment
Among Fig. 1, existing balance shock balance of mechanism inertial force is finished by the counterweight of the left crank 21 on the bent axle, right crank 4, and decapacitation complete equilibrium rotating inertia force can also balance 1/2nd times single order reciprocal inertia force.
Among Fig. 2, embodiment of the present utility model is: on the basis of existing balance shock mechanism, be that connecting rod 3 is contained in the middle of the left crank 21 and right crank 4 that has counterweight, the bearing of adorning on the axle of left and right crank by its both sides, be mounted on left crankcase 23 and the right case bent axle body 1, paper washer is housed, in case leak-stopping oil between left and right crankcases; Increase trunnion shaft 18; Method is: in right crankcase 1 outside, clutch driving gear 6 inboards, on the bent axle 2 of right crank 4 Woodruff key slots and keyways that processes is arranged, when right crank 4 rotates, can drive trunnion shaft driving gear 5 by woodruff key rotates, the trunnion shaft driving gear drives trunnion shaft driven gear 9 and rotates, and trunnion shaft driven gear 9 drives trunnion shaft 18 and rotates; For trunnion shaft 18 is rotated with bent axle 2 direction of rotation but velocity magnitude is identical, trunnion shaft driving gear 5 and trunnion shaft driven gear 9 equal and opposite in directions, trunnion shaft driven gear 9 is connected by the trunnion shaft 18 of woodruff key with the band eccentrically mounted weight, during engine operation, the axial motion of trunnion shaft driven gear 9 is limited by floor clip 10 and nut 11, trunnion shaft 18 is installed in left crankcase 23 and the right crankcase 1, referring to accompanying drawing 3, the motor front lower place is seen, trunnion shaft is configured in the front lower place of bent axle, and is mounted on left crankcase 23 and the right crankcase 1 by the bearing 17 at two ends.Left crankcase lid 20, right crankcase cap 14 and the paper washer between them be respectively with left and right crankcases 23,1 outer side sealing, and trunnion shaft driving gear 5 and trunnion shaft driven gear 9 are contained in the enclosed cavity that right crankcase 1 and right crankcase cap 14 formed.
The installation of trunnion shaft 18 is not limited to aforementioned location, as be installed in left crank 21 sides, trunnion shaft driving gear 5 and trunnion shaft driven gear 9 are also not necessarily leaveed no choice but equate, also can reach the purpose of this utility model as long as can produce the balance inertial force suitable with aforesaid reciprocal inertia force.
Working principle and process: during the work of crankshaft-link rod piston element, can produce rotating inertia force and reciprocal inertia force, the quality that the former is mainly rotated around crankshaft center line by connnecting rod big end and crank pin etc. produces, and the latter is by connecting rod small end, wrist pin and piston etc., produce along the reciprocating quality of cylinder body axis, reciprocal inertia force is single order reciprocal inertia force and two-stage reciprocating inertia force sum, and two-stage reciprocating inertia force is less, does not generally consider.The left crank 21 of this balance shock mechanism bent axle, the counterweight decapacitation complete equilibrium rotating inertia force on the right crank 4, can also balance 1/2nd times single order reciprocal inertia force, driving trunnion shaft driving gear 5 by woodruff key when remaining single order reciprocal inertia force is rotated by bent axle 2 rotates, the trunnion shaft driving gear drives trunnion shaft driven gear 9 and rotates, trunnion shaft driven gear 9 drives trunnion shaft 18 and rotates, trunnion shaft 18 is because asymmetric equilibrium, it rotates and produces an inertial force, and this inertial force equates with the single order reciprocal inertia force of aforementioned remainder.Trunnion shaft 18 is around the rotational that parallels with bent axle 2 axis, rotating speed is opposite with bent axle 2 rotating speeds but size is identical, the inertial force of its generation is balancing each other with inertial force that the cylinder block central axis parallels on the straight line, the eccentrically mounted weight of trunnion shaft 18 can be adopted the method for excision, be the circle or the asymmetric some of removing of other shape of cross section, also available other method of eccentrically mounted weight of certain trunnion shaft.Bent axle 2 drives trunnion shaft 18 rotations by two numbers of teeth and identical trunnion shaft driving gear 5 and the trunnion shaft driven gear 9 of modulus.
Claims (3)
1. single-cylinder four-stroke motorcycle gasoline engine balance shock mechanism, its left and right crank that is connected with connecting rod is made on the bent axle respectively, and place the chamber of forming by left and right crankcases, right crankcase one end that stretches out of this bent axle is equipped with the clutch driving gear, it is characterized in that: the trunnion shaft driving gear (5) with its rotation is housed on the bent axle (2); Trunnion shaft driven gear (9) is arranged, this trunnion shaft driven gear (9) and aforementioned trunnion shaft driving gear (5) engagement on the trunnion shaft (18).
2. single-cylinder four-stroke motorcycle gasoline engine balance shock according to claim 1 mechanism, it is characterized in that: trunnion shaft (18) is installed between aforementioned left crankcase (23) and right crankcase (1), support with bearing at this trunnion shaft (18) two ends, one end stretches out right crankcase (1), and external part is installed trunnion shaft driven gear (9).
3. single-cylinder four-stroke motorcycle gasoline engine balance shock according to claim 1 and 2 mechanism is characterized in that: the radial dimension equal and opposite in direction of trunnion shaft driven gear (9) and trunnion shaft driving gear (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02253189 CN2572017Y (en) | 2002-09-24 | 2002-09-24 | Balance vibration reducing mechanism for single-cylinder four-stroke gasoline engine of motorcycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02253189 CN2572017Y (en) | 2002-09-24 | 2002-09-24 | Balance vibration reducing mechanism for single-cylinder four-stroke gasoline engine of motorcycle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2572017Y true CN2572017Y (en) | 2003-09-10 |
Family
ID=33722424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02253189 Ceased CN2572017Y (en) | 2002-09-24 | 2002-09-24 | Balance vibration reducing mechanism for single-cylinder four-stroke gasoline engine of motorcycle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2572017Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7704061B2 (en) | 2003-11-17 | 2010-04-27 | Hitachi, Ltd. | Oil pump |
| CN101105206B (en) * | 2007-08-02 | 2010-12-08 | 力帆实业(集团)股份有限公司 | A motorcycle engine vibration damping mechanism |
| CN103452661A (en) * | 2013-08-20 | 2013-12-18 | 奇瑞汽车股份有限公司 | Axial thrust device for balance shaft |
| TWI422740B (en) * | 2011-09-08 | 2014-01-11 | Kwang Yang Motor Co | Crankcase with balance shaft |
| WO2017181398A1 (en) * | 2016-04-22 | 2017-10-26 | 江门市蓬江区蓝金科技有限公司 | Internal combustion engine vibration-free crankshaft connecting rod assembly |
| CN113047976A (en) * | 2021-04-16 | 2021-06-29 | 江苏江动柴油机制造有限公司 | Novel engine |
| CN113638803A (en) * | 2021-07-28 | 2021-11-12 | 河北华北柴油机有限责任公司 | Lower horizontal balance system of 132-cylinder-diameter single-cylinder engine |
| CN116241609A (en) * | 2022-12-15 | 2023-06-09 | 林海股份有限公司 | A Double Balance Shaft System of Large Displacement Single Cylinder Gasoline Engine |
-
2002
- 2002-09-24 CN CN 02253189 patent/CN2572017Y/en not_active Ceased
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7704061B2 (en) | 2003-11-17 | 2010-04-27 | Hitachi, Ltd. | Oil pump |
| CN101105206B (en) * | 2007-08-02 | 2010-12-08 | 力帆实业(集团)股份有限公司 | A motorcycle engine vibration damping mechanism |
| TWI422740B (en) * | 2011-09-08 | 2014-01-11 | Kwang Yang Motor Co | Crankcase with balance shaft |
| CN103452661A (en) * | 2013-08-20 | 2013-12-18 | 奇瑞汽车股份有限公司 | Axial thrust device for balance shaft |
| WO2017181398A1 (en) * | 2016-04-22 | 2017-10-26 | 江门市蓬江区蓝金科技有限公司 | Internal combustion engine vibration-free crankshaft connecting rod assembly |
| CN113047976A (en) * | 2021-04-16 | 2021-06-29 | 江苏江动柴油机制造有限公司 | Novel engine |
| CN113638803A (en) * | 2021-07-28 | 2021-11-12 | 河北华北柴油机有限责任公司 | Lower horizontal balance system of 132-cylinder-diameter single-cylinder engine |
| CN116241609A (en) * | 2022-12-15 | 2023-06-09 | 林海股份有限公司 | A Double Balance Shaft System of Large Displacement Single Cylinder Gasoline Engine |
| CN116241609B (en) * | 2022-12-15 | 2025-11-18 | 林海股份有限公司 | A dual balance shaft system for a large-displacement single-cylinder gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C35 | Partial or whole invalidation of patent or utility model | ||
| IW01 | Full invalidation of patent right |
Decision date of declaring invalidation: 20050512 Decision number of declaring invalidation: 7139 |