CN208749918U - The combination of motorcycle balancing axis - Google Patents
The combination of motorcycle balancing axis Download PDFInfo
- Publication number
- CN208749918U CN208749918U CN201821215182.4U CN201821215182U CN208749918U CN 208749918 U CN208749918 U CN 208749918U CN 201821215182 U CN201821215182 U CN 201821215182U CN 208749918 U CN208749918 U CN 208749918U
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- chamber
- piston
- driven gear
- buffer
- connecting rod
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Abstract
This application involves technical field of engines, specifically disclose the combination of motorcycle balancing axis comprising balance shaft, balance shaft are multi-diameter shaft, from left to right successively include driven gear construction section, first bearing construction section, clump weight profiled section and second bearing construction section；Driving portion is installed on driven gear construction section；Driving portion includes buffer disc and driven gear, driven gear is fixed with first piston, buffer disc is equipped with multiple buffer gears, buffer gear includes the first chamber and second chamber in buffer disc, first piston is equipped in first chamber, second piston is equipped in second chamber, first piston and second piston are fixed to each other by connecting rod；Second chamber and second piston form inflator structure, when second piston reciprocatingly slides, can pressurize into first chamber.It by the vibration of second piston, can pressurize into first chamber, so that pressure is maintained stationary value, therefore be not in influence buffering effect with using the time to extend.
Description
Technical field
The utility model relates to technical field of engines, and in particular to a kind of motorcycle balancing axis combination.
Background technique
In the course of work of motorcycle engine, the speed of service of piston is very fast, and speed is very uneven.Due to
Piston does the movement of high-speed straight-line repeatedly in cylinder, inevitable that very big inertia force is generated on piston, piston pin and connecting rod.It removes
Outside upper and lower dead-centre position, various inertia force cannot be fully balanced, engine is made to produce vibration.The automobile-used single-cylinder engine of motor
Most of machine all uses the relatively simple Monopodium balance mechanism of structure, to balance the first order reciprocating inertia force, reduces hair to reach
The purpose of motivation vibration.
Balance shaft is one equipped with eccentric weight and the axis that rotates with crankshaft-synchronous, using reversed caused by eccentric weight
Vibration force makes engine obtain good balance, reduces the vibration of engine.It, will due to being equipped with eccentric weight in balance shaft
It causes high-frequency to impact balance shaft driven gear wheel, balance shaft driven gear wheel is easy to cause to damage, cause engine failure.
In order to reduce the damage impacted to driven gear, damping is usually carried out to driven gear by installation spring.Due to
With the extension of use time, the rigidity of spring will gradually decrease, then the pretightning force of spring will decline；To will lead to buffering away from
From extension, and then driven gear is caused to be unable to drive balance shaft stable rotation, balance shaft is caused irregular swing situation occur.
Utility model content
The purpose of this utility model is to provide a kind of combination of motorcycle balancing axis, to avoid with using the time to extend,
There is the case where pretightning force reduces.
In order to achieve the above objectives, the base case of the utility model is as follows:
The combination of motorcycle balancing axis includes balance shaft, and balance shaft is multi-diameter shaft, from left to right successively includes that driven gear is pacified
Fill section, first bearing construction section, clump weight profiled section and second bearing construction section；Drive is installed on the driven gear construction section
Dynamic portion；The buffer disc that driving portion includes and driven gear construction section is keyed and the driven gear being installed on buffer disc, institute
Buffer disc is stated equipped with multiple buffer gears, buffer gear is uniformly arranged along the circumferential direction of buffer disc；Buffer gear includes being set to delay
First chamber and second chamber in punch plate are equipped with first piston in first chamber, are equipped with second piston in second chamber, and first
Piston and second piston are fixed to each other by connecting rod, and first chamber, second chamber and connecting rod are arc；Second chamber is close to
One end of one chamber is equipped with breather check valve, and connecting rod is hollow pipe, and connecting rod is located at the side wall in first chamber and connects equipped with first
Through-hole, connecting rod are located at the side wall in second chamber equipped with the second intercommunicating pore, and interior be equipped with of connecting rod can be by the air in second chamber
Import the exhaust check valve in first chamber；The driven gear is fixed with first piston.
The principle of this programme motorcycle balancing axis combination is:
The driven gear being installed in balance shaft is engaged with the driving gear being set on crankshaft, thus in crank rotation,
Driving gear will drive driven gear rotation, to drive balance shaft to rotate.It, will when rotating since balance shaft is equipped with eccentric block
Centrifugal force is generated, so that balance shaft be made to generate periodically vibration, then forms impact between driven gear and driving gear.
Air column is formed in first chamber, and when driven gear is impacted, first piston pair is set in first chamber
Air column will be formed and be squeezed, and since air column can be compressed, and first chamber and first piston form air spring.When from
When moving gear is impacted, shake first piston repeatedly in first chamber, so that first piston will drive second piston
It is shaken in second chamber, so that second chamber be made to form inflator structure, and is constantly filled with air into first chamber；Therefore
Pressure in first chamber will constantly increase, i.e., its pretightning force increases, and so as to reduce amplitude when damping, lead to balance shaft
There is irregular swing.
The beneficial effect that this programme generates is:
(1) spring shock absorption is used, since with the extension of use time, the rigidity of spring will gradually decrease；I.e. with when
Between extension, in damping, the amplitude of driven gear will be gradually increased, and balance shaft is caused irregular swing situation occur.?
It in the present solution, passing through the vibration of first piston and second piston, can pressurize into first chamber, so that pressure is maintained one steady
Constant-pressure, therefore the case where be not in using the time to extend, have an impact to damping effect.
(2) the main airbag structure made of rubber of current air spring extends rubber and has damaged with using, because
This maintenance cost is high.In the present solution, forming air spring using piston structure, and the air-tightness of piston structure is poor, therefore
The pretightning force set needed for making it difficult for it to keep for a long time；And by utilizing the vibration of second piston, and make second chamber and second
Piston forms inflator structure, pressure can be supplemented to first chamber, to guarantee the pretightning force in driven gear operational process.
Preferred embodiment one: advanced optimizing as to base case, be equipped in the first chamber on first piston
The middle part of the pressure spring that one end far from connecting rod offsets, first piston is equipped with for the fixed column fixed with driven gear.On basis
In scheme, since second chamber is only pressurizeed to the side of first chamber, then as in driven gear operational process, first chamber is another
The air of side is slowly discharged, and the space at the end will be made smaller and smaller；If the time of balance shaft operation is longer, the air at the end
It is completely exhausted out, buffering effect will be made to be deteriorated.Therefore pressure spring is provided in preferred embodiment one, then pressure spring will be made jointly with air column
With playing buffering effect；And the pretightning force of pressure spring is still determined by the pressure of the air column of side corresponding thereto, therefore is not in
The case where pressure spring pretightning force reduces in the prior art.
Preferred embodiment two: as advanced optimizing to preferred embodiment one, the space of the first chamber where the pressure spring
For spring cavity, the buffer disc is equipped with the oil duct being connected to spring cavity, and oil duct is closed by plug cock.In this preferred embodiment,
Lubricating oil is added into spring cavity, spring and first piston can be lubricated.
Preferred embodiment three: as advanced optimizing to preferred embodiment two, the driven gear is equipped with matches with fixed column
The mounting hole of conjunction, so that gear is bolted in fixed column.Driven gear and fixed column are detachable, consequently facilitating driven
The installation and replacement of gear.
Preferred embodiment four: as advanced optimizing to preferred embodiment three, the buffer disc deviates from the side of driven gear
It is equipped with stomata, space of the stomata by second chamber far from breather check valve side is connected to outside.Stomata can make second chamber
Space far from breather check valve side remains normal pressure, it is avoided to form the sliding of pressure influence second piston.
Preferred embodiment five: as advanced optimizing to preferred embodiment four, the periphery of the first piston and second piston
Equipped with sealing ring；To enhance the air-tightness of first chamber and second chamber.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that the utility model motorcycle balancing axis combines embodiment；
Fig. 2 is the cross-sectional view of buffer disc in the present embodiment.
Specific embodiment
The utility model is described in further detail below by specific embodiment:
Appended drawing reference in Figure of description includes: crankshaft 10, driving gear 11, balance shaft 20, driven gear construction section
21, first bearing construction section 22, clump weight profiled section 23, second bearing construction section 24, buffer disc 30, first piston 31, fixation
It is column 32, second piston 33, stomata 34, connecting rod 35, breather check valve 36, exhaust check valve 37, strip-shaped hole 38, pressure spring 39, driven
Gear 40.
Embodiment is substantially as shown in Figure 1 and Figure 2:
The motorcycle balancing axis combination of the present embodiment includes balance shaft 20, and balance shaft 20 is multi-diameter shaft, from left to right successively
Including driven gear construction section 21, first bearing construction section 22, clump weight profiled section 23 and second bearing construction section 24.Clump weight
It is equipped with eccentric block, eccentric block and balance shaft 20 are integrally formed；First bearing, the second axis are installed on first bearing construction section 22
It holds and second bearing is installed on construction section 24, balance shaft 20 is rotatably connected on by engine shell by first bearing and second bearing
On body.
Driving portion is installed on driven gear construction section 21；Driving portion includes slow with the key connection of driven gear construction section 21
Punch plate 30 and the driven gear 40 being installed on buffer disc 30.Driven gear 40 and the driving gear 11 being mounted on crankshaft 10
Engagement will be such that simultaneously balance shaft 20 rotates so that driving gear 11 passes through the transmission of driven gear 40 when crankshaft 10 rotates.
It is set on buffer disc 30 there are three buffer gear, buffer gear is uniformly arranged along the circumferential direction of buffer disc 30.Buffer gear includes being set to
First chamber and second chamber in buffer disc 30, first chamber is interior to be equipped with first piston 31, and it is living to be equipped with second in second chamber
The periphery of plug 33, first piston 31 and second piston 33 is equipped with sealing ring；And first piston 31 and second piston 33 pass through company
Bar 35 is welded to each other, so that first piston 31 and second piston 33 will be slided simultaneously.The side of buffer disc 30 is equipped with connection
The strip-shaped hole 38 of first chamber, the middle part of first piston 31 are equipped with the fixed column 32 for stretching out strip-shaped hole 38, and fixed column 32 is equipped with
Driven gear 40 can be fixed in fixed column 32 by threaded hole to be cooperated by bolt and threaded hole, i.e. realization driven gear
40 with the fixation of buffer disc 30.
First chamber, second chamber and connecting rod 35 are arc, so that first piston 31 and second piston 33 can be with
With buffer disc, 30 dot center moves in a circle.Second chamber is equipped with breather check valve 36, air inlet list close to one end of first chamber
It is in communication with the outside to the inlet end of valve 36, connecting rod 35 is hollow pipe, and connecting rod 35 is located at the side wall in first chamber equipped with first
Intercommunicating pore, connecting rod 35 are located at the side wall in second chamber equipped with the second intercommunicating pore, and connecting rod 35 is interior to be equipped with exhaust check valve 37.It is slow
Punch plate 30 is equipped with stomata 34 away from the side of driven gear 40, and stomata 34 is by second chamber far from 36 side of breather check valve
Space is connected to outside, so that second chamber remains normal pressure far from the space of 36 side of breather check valve.With in attached drawing 2, on
For the buffer gear in portion, when first piston 31 and second piston 33 are slided to the right, the space of the left end of second chamber increases,
Then the left end of second chamber will be by breather check valve 36 from ambient inlet air.And when first piston 31 and second piston 33 to
When left sliding, the space of second chamber left end reduces, and the space of first chamber right end increases；Exhaust check valve 37 is beaten at this time
It opens, the air in second chamber is pressed into first chamber by second piston 33, therefore the pressure of first chamber right end will constantly increase
Greatly；That is second chamber structure that similar large inflator is formed with second piston 33.
One end of first piston 31 and connecting rod 35 weld, and the other end of first piston 31 and first chamber surround spring
Chamber, spring cavity is interior to be equipped with the pressure spring 39 to offset with first piston 31.When first piston 31 and second piston 33 move back and forth, the
The indoor pressure of one chamber increases, while pressure spring 39 will be also squeezed, so that the both ends of first piston 31 reach preload pressure,
To meet buffer requirements.In addition, buffer disc 30 is equipped with the oil duct being connected to spring cavity, oil duct is closed by plug cock；To spring
Intracavitary addition lubricating oil can then be lubricated spring and first piston 31.
When driven gear 40 is impacted, driven gear 40 will drive first piston 31 to shake repeatedly in first chamber,
Then first piston 31 will drive second piston 33 to shake in second chamber, and air is constantly filled with into first chamber；Therefore
Pressure in first chamber will constantly increase, while pressure spring 39 is compressed, and reach required pretightning force.Then the two of first piston 31
End is respectively formed pressure, and can be compressed, to achieve the purpose that buffer driven gear 40.Due to the pretightning force of pressure spring 39
Too small, then buffer distance is too long, so that will lead to driven gear 40 is unable to drive 20 stable rotation of balance shaft；Therefore, in order to protect
While demonstrate,proving 20 stable rotation of balance shaft, moreover it is possible to there is buffer function to driven gear 40, in 40 high-speed rotation mistake of driven gear
Cheng Zhong, pressure spring 39 need to reach the pretightning force of design.In the present embodiment, even if after there is the pressure loss in first chamber, lead to
The vibration formed in the operation of driven gear 40 is crossed, can be pressurizeed into first chamber, to guarantee its pretightning force.
Above-described is only the embodiments of the present invention, and the common sense such as well known specific structure and characteristic are herein in scheme
It does not describe excessively.It should be pointed out that for those skilled in the art, in the premise for not departing from the utility model structure
Under, several modifications and improvements can also be made, these also should be considered as the protection scope of the utility model, these all will not influence
The effect and patent practicability that the utility model is implemented.This application claims protection scope should be with the content of its claim
Subject to, the records such as specific embodiment in specification can be used for explaining the content of claim.
Claims (6)
1. motorcycle balancing axis combines, including balance shaft, balance shaft are multi-diameter shaft, from left to right successively include that driven gear is installed
Section, first bearing construction section, clump weight profiled section and second bearing construction section；It is characterized by: the driven gear construction section
On driving portion is installed；Driving portion include with driven gear construction section key connection buffer disc and be installed on buffer disc from
Moving gear, the buffer disc are equipped with multiple buffer gears, and buffer gear is uniformly arranged along the circumferential direction of buffer disc；Buffer gear packet
The first chamber and second chamber being set in buffer disc are included, first piston is equipped in first chamber, is equipped with second in second chamber
Piston, first piston and second piston are fixed to each other by connecting rod, and first chamber, second chamber and connecting rod are arc；Second
Chamber is equipped with breather check valve close to one end of first chamber, and connecting rod is hollow pipe, and connecting rod is located on the side wall in first chamber
Equipped with the first intercommunicating pore, connecting rod is located at the side wall in second chamber equipped with the second intercommunicating pore, and interior be equipped with of connecting rod can be by the second chamber
Indoor air imports the exhaust check valve in first chamber；The driven gear is fixed with first piston.
2. motorcycle balancing axis combination according to claim 1, it is characterised in that: be equipped with and first in the first chamber
The middle part of the pressure spring that one end on piston far from connecting rod offsets, first piston is equipped with for the fixed column fixed with driven gear.
3. motorcycle balancing axis according to claim 2 combination, it is characterised in that: first chamber where the pressure spring
Space is spring cavity, and the buffer disc is equipped with the oil duct being connected to spring cavity, and oil duct is closed by plug cock.
4. motorcycle balancing axis combination according to claim 3, it is characterised in that: the driven gear is equipped with and fixation
The mounting hole of column cooperation, driven gear are bolted in fixed column.
5. motorcycle balancing axis combination according to claim 4, it is characterised in that: the buffer disc is away from driven gear
Side is equipped with stomata, and space of the stomata by second chamber far from breather check valve side is connected to outside.
6. motorcycle balancing axis according to claim 5 combination, it is characterised in that: the first piston and second piston
Periphery is equipped with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215182.4U CN208749918U (en) | 2018-07-27 | 2018-07-27 | The combination of motorcycle balancing axis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821215182.4U CN208749918U (en) | 2018-07-27 | 2018-07-27 | The combination of motorcycle balancing axis |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208749918U true CN208749918U (en) | 2019-04-16 |
Family
ID=66058684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821215182.4U Expired - Fee Related CN208749918U (en) | 2018-07-27 | 2018-07-27 | The combination of motorcycle balancing axis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208749918U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056594A (en) * | 2019-05-23 | 2019-07-26 | 儒拉玛特自动化技术(苏州)有限公司 | Buffer gear |
| CN110422566A (en) * | 2019-07-12 | 2019-11-08 | 江苏长龄液压股份有限公司 | A kind of pressure-balancing type guide wheel with buffer protection structure |
-
2018
- 2018-07-27 CN CN201821215182.4U patent/CN208749918U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110056594A (en) * | 2019-05-23 | 2019-07-26 | 儒拉玛特自动化技术(苏州)有限公司 | Buffer gear |
| CN110422566A (en) * | 2019-07-12 | 2019-11-08 | 江苏长龄液压股份有限公司 | A kind of pressure-balancing type guide wheel with buffer protection structure |
| CN110422566B (en) * | 2019-07-12 | 2024-02-27 | 江苏长龄液压股份有限公司 | Pressure balance type guide wheel with buffer protection structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190416 Termination date: 20200727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |