CN203856530U - Oil pump and balance shaft transmission structure for engine - Google Patents
Oil pump and balance shaft transmission structure for engine Download PDFInfo
- Publication number
- CN203856530U CN203856530U CN201420128753.6U CN201420128753U CN203856530U CN 203856530 U CN203856530 U CN 203856530U CN 201420128753 U CN201420128753 U CN 201420128753U CN 203856530 U CN203856530 U CN 203856530U
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- China
- Prior art keywords
- oil pump
- shaft
- live axle
- axle
- balance shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 230000005540 biological transmission Effects 0.000 title abstract description 9
- 230000007246 mechanism Effects 0.000 claims abstract description 14
- 239000003921 oil Substances 0.000 claims description 39
- 239000010705 motor oil Substances 0.000 claims description 13
- 230000006978 adaptation Effects 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000005173 gliding motility Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000010721 machine oil Substances 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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- General Details Of Gearings (AREA)
Abstract
The utility model discloses an oil pump and balance shaft transmission structure for an engine. A driving shaft (3) is connected with a rotor shaft (10) through a crossed shaft (2); a flat head part (21) and a concave groove part (22) are arranged at two ends of the crossed shaft (2) and are perpendicular to each other; a chain wheel driving mechanism (8) is used for effectively simultaneously driving a balance shaft and an oil pump (1), and the transmission is reliable. Due to the crossed shaft structure, the problem of disalignment, which is caused by the processing precision, between the engine rotor shaft (10) and the driving shaft (3) is effectively solved; the oil pump and balance shaft transmission structure has a function of automatically adjusting the coaxiality.
Description
Technical field
The utility model belongs to technical field of engines, relates in particular to a kind of motor oil Pump For Machine trunnion shaft drive mechanism.
Background technique
Trunnion shaft technology is the wider technology of application in single-cylinder engine, and it simple and practical can be extenuated the car load vibration of motorcycle effectively, improves the travelling comfort of driving.Because in the work cycle of single-cylinder engine, the movement velocity of piston is very fast, and speed is very inhomogeneous.At upper and lower dead-centre position, the speed of piston is zero, and reaches the highest at the middle position and speed of upper and lower stop.Because piston does high-speed straight-line motion repeatedly in cylinder, must on piston, wrist pin and connecting rod, produce very large inertial force.The counterweight configuring on connecting rod is these inertial force of balance effectively. but counterweight on connecting rod only some moving-mass participate in straight line motion, another part participates in rotation.Except upper and lower dead-centre position, various inertial force can not be by complete equilibrium, makes motor produce vibration.
When piston often moves up and down once, will make motor produce twice vibration one on the other, so the vibration frequency of motor is relevant with the rotating speed of motor.In vibrational theory, the vibration of motor is often described with multiple harmonic vibrations, what wherein vibration frequency was identical with engine speed cries single order vibration, and frequency is that the second order that cries of 2 times of engine speed vibrates, the like, also there is three rank, quadravalence vibration.But vibration frequency is higher, amplitude is just less, and 2 rank are above negligible.Its single order vibration accounts for the more than 70% of whole vibration, is the main source of vibration.
Trunnion shaft is briefly an axle that eccentric weight is housed and rotates with crankshaft-synchronous, and the reversal of vibrations power of utilizing eccentric weight to produce, makes motor obtain good balance, reduces the vibration of motor.In sum, trunnion shaft is exactly the vibration for balance and minimizing motor, thereby realizes the object that reduces engine noise, increases the service life, promotes driver's travelling comfort.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem: the motor of current a lot of coupling trunnion shafves is made in trunnion shaft the both sides of cylinder body, drives by 2 cover trains.Be so on the one hand the width direction of engine assembly increases more, bulky.Another side two overlaps drive train the cost of motor is significantly increased.And, come the driving of driven equilibrium axle and the measure that machine oil pump structure has never had by a set of sprocket drive.
Model utility content
Technical problem to be solved in the utility model is a kind of motor oil Pump For Machine trunnion shaft drive mechanism that has reduced the complexity that parts are made, effectively ensured the reliability being in transmission connection.
In order to solve the problems of the technologies described above, the technological scheme that the utility model adopts is: a kind of motor oil Pump For Machine trunnion shaft drive mechanism, comprise oil pump and balance shaft system, described oil pump comprises rotor shaft, described balance shaft system comprises balance shaft gear and live axle, described balance shaft gear is fixedly mounted on live axle, on described live axle, be installed with oil pump sprocket wheel, described oil pump sprocket wheel connection chain actuation, described live axle is connected with rotor shaft by cross axle, described cross axle one end is provided with homalocephalus portion, and the other end is provided with groove part; Described live axle is provided with guiding groove, and described rotor shaft is provided with guide pad; Described homalocephalus portion and guiding groove adaptation, described guide pad and groove part adaptation; Described homalocephalus portion and groove part shape are in an angle.
The angle of described homalocephalus portion and groove part is 90 degree.
Described homalocephalus portion and guiding groove are slidably matched, and described guide pad and groove part are slidably matched.
The described live axle the other end is provided with the internal thread of construction bolt, and described balance shaft gear and oil pump sprocket wheel are arranged on live axle by described bolt.
Between described bolt and oil pump sprocket wheel, be provided with pad.
A technological scheme tool in technique scheme has the following advantages or beneficial effect, and 1, using trunnion shaft and oil pump as absolute construction, link together by cross axle structure.Effectively reduce the manufacture difficulty of trunnion shaft and oil pump.
2, drive mechanism is cross-shaped groove structure, effectively make up the machining error of oil pump and live axle, in the time that the center of oil pump and the center of live axle are not on same straight line, cross axle is gliding motility in its connecting surface, effectively reduce the accuracy of manufacturing of component, not only connect reliably, and manufacture cost is reduced.
3, only need a set of train transmission, when just can completing rotor of engine oil pump axle and trunnion shaft, drive, effectively saved cost.
4, trunnion shaft is arranged in oil sump, and oil pump is arranged on trunnion shaft, has reduced efficiently the width of motor.
Brief description of the drawings
Fig. 1 is the decomposition texture schematic diagram of motor oil Pump For Machine trunnion shaft drive mechanism in the utility model embodiment;
Fig. 2 is the erection drawing of Fig. 1;
Fig. 3 is the bottom view of Fig. 1;
Fig. 4 is the A-A sectional view of Fig. 3;
Fig. 5 is the A portion enlarged view of Fig. 4;
Fig. 6 is the cross axle linkage structure schematic diagram of Fig. 5;
Fig. 7 is the structural representation of the cross axle of Fig. 6;
Mark in above-mentioned figure is: 1, oil pump, 2, cross axle, 21, homalocephalus portion, 22, groove part, 3, live axle, 31, guiding groove, 4, housing, 5, balance shaft gear, 6, oil pump sprocket wheel, 7, bolt, 8, sprocket drive, 9, pad, 10, rotor shaft, 101, guide pad.
Embodiment
Fig. 1～5 are the embodiment's of the utility model motor oil Pump For Machine trunnion shaft drive mechanism structural representation, comprise oil pump 1 and balance shaft system, oil pump 1 comprises rotor shaft 10, balance shaft system comprises balance shaft gear 5 and live axle 3, balance shaft gear 5 is fixedly mounted on live axle 3, on live axle 3, be installed with oil pump sprocket wheel 6, oil pump sprocket wheel 6 connection chain actuation 8, live axle 3 is connected with rotor shaft 10 by cross axle 2, cross axle 2 one end are provided with homalocephalus portion 21, and the other end is provided with groove part 22; Live axle 3 is provided with guiding groove 31, and rotor shaft 10 is provided with guide pad 101; Homalocephalus portion 21 and guiding groove 31 adaptations, guide pad 101 and groove part 22 adaptations; Homalocephalus portion 21 and groove part 22 shapes are in an angle.
Exist using oil pump 1 and trunnion shaft as parts independently, effectively reduced the complexity that parts are made, between oil pump 1 and trunnion shaft, be connected by cross axle structure, cross axle structure is symplex structure, has effectively ensured the reliability being in transmission connection.Most importantly, this sets of transmission mechanism can be adjusted the alignment error of train and trunnion shaft effectively, in the time that the center of oil pump 1 and the center of live axle 3 are not on same straight line, cross axle 2 is gliding motility in its connecting surface, effectively reduce the accuracy of manufacturing of component, not only connect reliably, and manufacture cost is reduced.Meanwhile, a set of train can complete the driving of balance shaft of engine and oil pump 1.
As shown in Figure 6 and Figure 7, the angle of homalocephalus portion 21 and groove part 22 is 90 degree.Homalocephalus portion 21 is slidably matched with guiding groove 31, and guide pad 101 is slidably matched with groove part 22.The angle design of 90 degree, can play automatic adjustment rotor shaft 10 and the concentric function of live axle 3, can prevent again rotor shaft 10 and live axle 3 slippage from cross axle 2.
Live axle 3 the other ends are provided with the internal thread of construction bolt 7, and balance shaft gear 5 and oil pump sprocket wheel 6 are arranged on live axle 3 by bolt 7.
Between bolt 7 and oil pump sprocket wheel 6, be provided with pad 9.
Balance shaft housing 4 and oil pump 1 exist as independent individual, when engine crankshaft running, the moment of bent axle turns round by oil pump sprocket wheel 6, because balance shaft gear 5 and oil pump sprocket wheel 6 are reliably connected on live axle 3 by bolt 7 and pad 9, the rotation of oil pump sprocket wheel 6 directly drives the running of balance shaft gear 5, and cross axle 2 connects the rotor shaft 10 of live axle 3 and oil pump 1 reliably, therefore, when in crankshaft operation process, the rotation of rotating force while driven equilibrium axle system and oil pump 1.
Cross axle 2 is symmetrical cross axle structure, and one end is trough of belt structure, and one end is flat square structure.One end of trough of belt is directly connected with the rotor shaft 10 of oil pump 1, and flat side one end is connected with live axle 3.Due to cross axle 2 He Bianfang one end, trough of belt one end, mutually vertical, while there is height difference in the center of live axle 3 and rotor of engine oil pump axle 1, cross axle 2 operates as slip in groove, like this, make up the machining error of oil pump 1 and trunnion shaft, effectively reduced the degree of motor.Meanwhile, this structure driven is reliable, has also saved the catenary system of a set of independent driving.
Adopt after above-mentioned structure, utilize a set of sprocket drive 8 effectively trunnion shaft and oil pump 1 to be driven simultaneously, and reliable transmission.Cross axle structure, makes up engine rotor axle 10 and the out-of-alignment problem that live axle 3 causes because of machining accuracy effectively, has the coaxial function of automatic adjustment.
By reference to the accompanying drawings the utility model is exemplarily described above; obviously the utility model specific implementation is not subject to the restrictions described above; as long as adopted the improvement of the various unsubstantialities that method of the present utility model design and technological scheme carry out; or without improving, design of the present utility model and technological scheme are directly applied to other occasion, all within protection domain of the present utility model.
Claims (5)
1. a motor oil Pump For Machine trunnion shaft drive mechanism, comprise oil pump (1) and balance shaft system, described oil pump (1) comprises rotor shaft (10), described balance shaft system comprises balance shaft gear (5) and live axle (3), described balance shaft gear (5) is fixedly mounted on live axle (3), on described live axle (3), be installed with oil pump sprocket wheel (6), described oil pump sprocket wheel (6) connection chain actuation (8), it is characterized in that, described live axle (3) is connected with rotor shaft (10) by cross axle (2), described cross axle (2) one end is provided with homalocephalus portion (21), the other end is provided with groove part (22), described live axle (3) is provided with guiding groove (31), and described rotor shaft (10) is provided with guide pad (101), described homalocephalus portion (21) and guiding groove (31) adaptation, described guide pad (101) and groove part (22) adaptation, described homalocephalus portion (21) and groove part (22) shape are in an angle.
2. motor oil Pump For Machine trunnion shaft drive mechanism as claimed in claim 1, is characterized in that, the angle of described homalocephalus portion (21) and groove part (22) is 90 degree.
3. motor oil Pump For Machine trunnion shaft drive mechanism as claimed in claim 1 or 2, is characterized in that, described homalocephalus portion (21) is slidably matched with guiding groove (31), and described guide pad (101) is slidably matched with groove part (22).
4. motor oil Pump For Machine trunnion shaft drive mechanism as claimed in claim 3, it is characterized in that, described live axle (3) the other end is provided with the internal thread of construction bolt (7), and described balance shaft gear (5) and oil pump sprocket wheel (6) are arranged on live axle (3) by described bolt (7).
5. motor oil Pump For Machine trunnion shaft drive mechanism as claimed in claim 4, is characterized in that, between described bolt (7) and oil pump sprocket wheel (6), is provided with pad (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128753.6U CN203856530U (en) | 2014-03-20 | 2014-03-20 | Oil pump and balance shaft transmission structure for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420128753.6U CN203856530U (en) | 2014-03-20 | 2014-03-20 | Oil pump and balance shaft transmission structure for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203856530U true CN203856530U (en) | 2014-10-01 |
Family
ID=51606389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420128753.6U Expired - Lifetime CN203856530U (en) | 2014-03-20 | 2014-03-20 | Oil pump and balance shaft transmission structure for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203856530U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832593A (en) * | 2014-11-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Balance shaft assembly and engine |
| CN108180390A (en) * | 2017-11-22 | 2018-06-19 | 中国北方发动机研究所(天津) | A kind of structure using balance shaft driving lubricating oil pump |
-
2014
- 2014-03-20 CN CN201420128753.6U patent/CN203856530U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832593A (en) * | 2014-11-28 | 2015-08-12 | 北汽福田汽车股份有限公司 | Balance shaft assembly and engine |
| CN104832593B (en) * | 2014-11-28 | 2017-01-18 | 北汽福田汽车股份有限公司 | Balance shaft assembly and engine |
| CN108180390A (en) * | 2017-11-22 | 2018-06-19 | 中国北方发动机研究所(天津) | A kind of structure using balance shaft driving lubricating oil pump |
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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: 20141001 |
|
| CX01 | Expiry of patent term |