CN102537205A - Double-shaft balance device of engine - Google Patents
Double-shaft balance device of engine Download PDFInfo
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- CN102537205A CN102537205A CN2011104327362A CN201110432736A CN102537205A CN 102537205 A CN102537205 A CN 102537205A CN 2011104327362 A CN2011104327362 A CN 2011104327362A CN 201110432736 A CN201110432736 A CN 201110432736A CN 102537205 A CN102537205 A CN 102537205A
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Abstract
The invention provides a double-shaft balance device of an engine, which belongs to the technical field of mechanical engineering and resolves the technical problems of engine vibration and noise caused by vibration of the existing automobile. The double-shaft balance device of the engine comprises a driving gear fixed on a crank shaft and a first balance shaft and a second balance shaft which are arranged on the lateral side of the crank shaft and are parallel relative to a main journal of the crank shaft. The first balance shaft and the second balance shaft are respectively provided with a tooth portion, a shaft portion and a balance portion. The balance portion is arranged between the tooth portion and the shaft portion, and the weight of an area on one side of the balance portion relative to a radial line of the tooth portion is smaller than the weight of an area on the other side. The tooth portion of the first balance shaft is meshed with the tooth portion of the second balance shaft, and the tooth portion of the first balance shaft is meshed with the driving gear. The balance portion of the first balance shaft and the balance portion of the second balance shaft are symmetrically arranged relative to the meshing face of the first balance shaft and the second balance shaft. The double-shaft balance device facilitates integral machine arrangement and has the advantages of being compact in structure and small in size and saving cost.
Description
Technical field
The invention belongs to mechanical engineering technical field, relate to the two-shaft balancing device of a kind of damping device, particularly a kind of motor.
Background technique
Motor (Engine) is called engine again, be a kind of can being converted into of other form another kind of can machine, normally be converted into mechanical energy to chemical energy.It is widely used on the equipment such as vehicle, steamer.
Along with the raising that the fast development of automobile industry and people require car comfort, car engine machine vibration and become by the noise that vibration brings and to pay close attention to the problem that the benefit of subsisting improves in the Automobile Motor Design.
Connecting rod is one of motor important mechanism, and the to-and-fro motion meeting of crank-connecting rod mechanism for engine produces periodically reciprocal inertia force, thereby brings periodic vibration.In order to eliminate above-mentioned periodic vibration, on motor, trunnion shaft being installed is one of common scheme of Automobile Motor Design.
The disclosed a kind of engine crankshaft balance shaft mechanism [patent No.: ZL200510094169.9 of its pertinent literature such as Chinese patent document; Notice of authorization number: CN100432479C], it comprises two trunnion shafves, and trunnion shaft is made up of two balancer weights and a live axle, and its driving mode is a gear drive.Because two balancer weights lay respectively at the live axle two ends, thus this arrangement that trunnion shaft is taken up space is bigger, the complete machine difficult arrangement.
The disclosed a kind of improved motor two-shaft balancing device [patent No.: ZL200920303563.2 of Chinese patent document and for example; Notice of authorization number: CN201475241U]; Comprise bent axle and be located at the 1st trunnion shaft and the 2nd trunnion shaft that the bent axle side is arranged in parallel; On bent axle, be provided with actuation gear; On the 1st trunnion shaft, be provided with side by side and the driven gear of actuation gear engagement and be used to drive the trunnion shaft I gear that the 2nd trunnion shaft rotates, on the 2nd trunnion shaft, be provided with the trunnion shaft II gear with trunnion shaft I gear engagement, corresponding position is respectively equipped with two pairs of equilibrium blocks on the 1st trunnion shaft and the 2nd trunnion shaft.Though the present technique scheme has adopted the double balance shaft gear drive, have the ability of eliminating periodic vibration, still exist certain defective.1, the length of the 1st trunnion shaft and the 2nd trunnion shaft is isometric with bent axle basically, thus this arrangement also trunnion shaft to be taken up space bigger, the complete machine difficult arrangement.2, adopt two pairs of gear pair engagement driving, promptly have four gears, therefore exist the cost height, be easy to generate problem such as noise.3, the trunnion shaft length of two-shaft balancing device is big, and parts are many, causes weight very big, and this and motor light-weight design theory are disagreed.4, the 1st trunnion shaft and the 2nd trunnion shaft structure and inequality can't be general, and this cost that also causes producing motor increases.
Summary of the invention
The objective of the invention is to have the problems referred to above, proposed the two-shaft balancing device of the little motor of a kind of compact structure and volume to existing technology.
The object of the invention can be realized through following technical proposal: a kind of two-shaft balancing device of motor; Motor comprises casing and bent axle, and this two-shaft balancing device comprises the actuation gear that is fixed on the bent axle and is positioned at the side of bent axle and first trunnion shaft and the secondary balance shaft that laterally arranges with respect to crankshaft main journal; It is characterized in that described first trunnion shaft and secondary balance shaft all have tooth portion, axial region and between tooth portion and axial region and with respect to the balance portion of the weight that weighs less than the opposite side zone of a regions of tooth portion one radial line; The axial region of described first trunnion shaft and secondary balance shaft is all located on the casing, and the tooth portion of described first trunnion shaft and secondary balance shaft is meshed and the tooth portion of first trunnion shaft is meshed with actuation gear; The balance portion of described first balance shaft balancing portion and secondary balance shaft is symmetrical set with respect to first trunnion shaft and secondary balance shaft Surface of action.
In the two-shaft balancing device of above-mentioned motor, the velocity ratio between the described actuation gear and first trunnion shaft is 1: 2.
In the two-shaft balancing device of above-mentioned motor, the velocity ratio between described first trunnion shaft and the secondary balance shaft is 1: 1.
In the two-shaft balancing device of above-mentioned motor, below and first trunnion shaft and secondary balance shaft that described first trunnion shaft and secondary balance shaft are positioned at bent axle are positioned on the same horizontal plane.This structure arranges more rationally concerning motor, compacter, easy arrangement and the motor miscellaneous part arranged that influence is minimum more.
In the two-shaft balancing device of above-mentioned motor, the shaft axis of described first trunnion shaft is positioned at a side of the vertical radial line of crankshaft main journal; The shaft axis of described secondary balance shaft is positioned at the opposite side of the vertical radial line of crankshaft main journal.
In the two-shaft balancing device of above-mentioned motor, the distance between the vertical radial line of described first trunnion shaft and the vertical radial line of crankshaft main journal is less than the vertical radial line of secondary balance shaft and the distance between the vertical radial line of crankshaft main journal.This structure has avoided the tooth portion on first trunnion shaft and the secondary balance shaft all to be meshed with actuation gear effectively.Simultaneously, the big I of above-mentioned distance designs according to actual conditions, has further improved the flexibility of the two-shaft balancing device layout of this motor.
In the two-shaft balancing device of above-mentioned motor, described balance portion is 0.18～0.62 with respect to the weight of a regions of tooth portion one radial line and the part by weight value in opposite side zone.This structure can make trunnion shaft produce bigger centrifugal force satisfying the second-order inertia power of balanced engine when each rotating speed, thereby realizes the dynamic balancing of motor.Can select different numerical according to actual conditions according to different motors, and then make this two-shaft balancing device have versatility well.
In the two-shaft balancing device of above-mentioned motor; When the axle center of described rod journal was in the vertical radial line intersection of crankshaft main journal, above-mentioned tooth portion one radial line and the vertical radial line of crankshaft main journal that balance portion are divided into a regions and opposite side zone were perpendicular.This structure is used to also guarantee that the component size of centrifugal force on two trunnion shaft axial connecting line directions of trunnion shaft generation is identical and in the opposite direction; Therefore just in time cancel out each other; Component size, direction in piston motion central track trace direction are all identical, thereby can offset the inertial force that reciprocating motion of the pistons produces.
In the two-shaft balancing device of above-mentioned motor, the ratio value of described tooth portion's width and axial region length is 0.25～0.5.Hence one can see that, and the length of this trunnion shaft is shorter, and this structure has also effectively guaranteed this two-shaft balancing device little characteristics that take up room.
In the two-shaft balancing device of above-mentioned motor, the two ends of described axial region all link to each other with casing through bearing.
Compared with prior art, the two-shaft balancing device of this motor has the following advantages:
1, double balance shaft horizontal arrangement constitutional balance produces periodically two-stage reciprocating inertia force by the to-and-fro motion meeting of connecting rod, and does not have the lateral force generation.
2, utilize balance portion one side on the trunnion shaft to increase the weight of, opposite side removes heavily to form eccentric structure, replaces conventional balanced shaftgear and balancer weight separated structures, and the trunnion shaft axial dimension is significantly shortened, and makes things convenient for complete machine to arrange.
3, the gearing of intermediate gear had promptly both been played by the tooth portion on first trunnion shaft, thereby made eccentric structure rotation balance two-stage reciprocating inertia force own again.
4, first trunnion shaft and secondary balance shaft are arranged in the bent axle below, and asymmetric with crankshaft axis, and this structural configuration can make first trunnion shaft when driving the secondary balance shaft rotation, avoids the tooth portion of secondary balance shaft to be meshed with actuation gear; Thereby make this two-shaft balancing device lack one group of driving gear than other double balance shaft motors.
Description of drawings
Fig. 1 is the perspective view of the two-shaft balancing device of this motor.
Fig. 2 is the perspective view behind the removal casing among Fig. 1.
Fig. 3 is the side-looking structural representation of the two-shaft balancing device of this motor.
Fig. 4 is the perspective view of trunnion shaft in the two-shaft balancing device of this motor.
Fig. 5 is the sectional structure schematic representation of trunnion shaft in the two-shaft balancing device of this motor.
Among the figure, 1, bent axle; 1a, rod journal; 1b, main journal; 2, actuation gear; 3, first trunnion shaft; 4, secondary balance shaft; 5, axial region; 6, balance portion; 7, tooth portion; 8, loss of weight groove; 9, weightening finish piece; 10, casing.
Embodiment
Below be specific embodiment of the present invention and combine accompanying drawing, technological scheme of the present invention is done further to describe, but the present invention is not limited to these embodiments.
As depicted in figs. 1 and 2, motor comprises casing 10 and bent axle 1.This two-shaft balancing device is arranged in the casing 10, and it comprises actuation gear 2, first trunnion shaft 3 and secondary balance shaft 4.
Specifically, like Fig. 1, Fig. 2 and shown in Figure 3, actuation gear 2 is fixed on the bent axle 1.First trunnion shaft 3 laterally arranges with respect to bent axle 1 main journal 1b with secondary balance shaft 4 and is positioned at the side of bent axle 1.The scheme that present embodiment provides is the below that first trunnion shaft 3 and second balance are positioned at bent axle 1; First trunnion shaft 3 and second balance are positioned on the same horizontal plane.
To shown in Figure 5, the structure of first trunnion shaft 3 and secondary balance shaft 4 is all identical with size like Fig. 1, in actual production, can reduce design, cost of production widely thus and is easy to install and maintain.First trunnion shaft 3 all has tooth portion 7, axial region 5 and balance portion 6 with secondary balance shaft 4.
As depicted in figs. 1 and 2, the two ends of axial region 5 all link to each other with casing 10 through bearing.The tooth portion 7 of first trunnion shaft 3 and the tooth portion 7 of secondary balance shaft 4 are meshed; The tooth portion 7 of first trunnion shaft 3 is meshed with actuation gear 2.When bent axle 1 rotates, move and drive actuation gear 2, first trunnion shaft 3 and secondary balance shaft 4 rotations.
Velocity ratio between the actuation gear 2 and first trunnion shaft 3 is 1: 2.Velocity ratio between first trunnion shaft 3 and the secondary balance shaft 4 is 1: 1.First trunnion shaft 3 that this Figure of description provides is 23 with the number of teeth on the secondary balance shaft 4, and the number of teeth on the actuation gear 2 is 46.
The shaft axis of first trunnion shaft 3 is positioned at a side of the vertical radial line of bent axle 1 main journal 1b; The shaft axis of secondary balance shaft 4 is positioned at the opposite side of the vertical radial line of bent axle 1 main journal 1b.Distance between the vertical radial line of first trunnion shaft 3 and the vertical radial line of bent axle 1 main journal 1b is less than the vertical radial line of secondary balance shaft 4 and the distance between the vertical radial line of bent axle 1 main journal 1b.A in the Figure of description representes the vertical radial line of first trunnion shaft 3 and the distance between the vertical radial line of bent axle 1 main journal 1b; B representes the vertical radial line of secondary balance shaft 4 and the distance between the vertical radial line of bent axle 1 main journal 1b.
The balance portion 6 of first trunnion shaft 3 and the balance portion 6 of secondary balance shaft 4 are symmetrical set with secondary balance shaft 4 Surface of action with respect to first trunnion shaft 3.C in the Figure of description representes first trunnion shaft 3 and secondary balance shaft 4 Surface of action; First trunnion shaft 3 and secondary balance shaft 4 Surface of action are the face of the central lines between and intersection line and first trunnion shaft 3 and the secondary balance shaft 4 vertical with the plane at first trunnion shaft, 3 axle center and place, secondary balance shaft 4 axle center.
When the axle center of bent axle 1 rod journal 1a and the vertical radial line of bent axle 1 main journal 1b intersected, an above-mentioned regions and opposite side regional tooth portion 7 one radial lines and the vertical radial line of bent axle 1 main journal 1b that balance portion 6 is divided into was perpendicular.
During engine operation, the rotation of bent axle 1 drives actuation gear 2, first trunnion shaft 3 and secondary balance shaft 4 successively and rotates, the direction of rotation of first trunnion shaft 3 and secondary balance shaft 4.The component size of the centrifugal force that trunnion shaft produces on two trunnion shaft axial connecting line directions is identical and in the opposite direction; Therefore just in time cancel out each other; Component size, direction in piston motion central track trace direction are all identical, thereby can offset the inertial force that reciprocating motion of the pistons produces.The rotating speed of first trunnion shaft 3 and secondary balance shaft 4 is two times of rotating speed of bent axle 1; Therefore the two-stage reciprocating inertia force of balanced engine just in time; Through suitable balance portion 6 quality are set, the second-order inertia power of balanced engine when each rotating speed effectively, thus realize the dynamic balancing of motor.
Specific embodiment described herein only is that the present invention's spirit is illustrated.Person of ordinary skill in the field of the present invention can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present invention or surmount the defined scope of appended claims.
Although this paper has used bent axle 1 morely; Rod journal 1a; Main journal 1b; Actuation gear 2; First trunnion shaft 3; Secondary balance shaft 4; Axial region 5; Balance portion 6; Tooth portion 7; Loss of weight groove 8; Weightening finish piece 9 terms such as grade, but do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present invention more easily; It all is contrary with spirit of the present invention being construed to any additional restriction to them.
Claims (10)
1. the two-shaft balancing device of a motor, motor comprises casing (10) and bent axle (1), this two-shaft balancing device comprises first trunnion shaft (3) and the secondary balance shaft (4) of actuation gear (2) that is fixed on the bent axle (1) and the side that is positioned at bent axle (1); It is characterized in that, described first trunnion shaft (3) and secondary balance shaft (4) all have tooth portion (7), axial region (5) and be positioned at tooth portion (7) and axial region (5) between and with respect to the balance portion (6) of the weight that weighs less than the opposite side zone of a regions of tooth portion (7) one radial lines; The axial region (5) of described first trunnion shaft (3) and secondary balance shaft (4) is all located on the casing (10), and the tooth portion (7) of described first trunnion shaft (3) and secondary balance shaft (4) is meshed and the tooth portion (7) of first trunnion shaft (3) is meshed with actuation gear (2); The balance portion (6) of described first trunnion shaft (3) and the balance portion (6) of secondary balance shaft (4) are symmetrical set with respect to first trunnion shaft (3) and secondary balance shaft (4) Surface of action.
2. the two-shaft balancing device of motor according to claim 1 is characterized in that, the velocity ratio between described actuation gear (2) and first trunnion shaft (3) is 1: 2.
3. the two-shaft balancing device of motor according to claim 1 is characterized in that, the velocity ratio between described first trunnion shaft (3) and the secondary balance shaft (4) is 1: 1.
4. the two-shaft balancing device of motor according to claim 1 is characterized in that, below and first trunnion shaft (3) and secondary balance shaft (4) that described first trunnion shaft (3) and secondary balance shaft (4) are positioned at bent axle (1) are positioned on the same horizontal plane.
5. according to the two-shaft balancing device of any described motor in the claim 1 to 4, it is characterized in that the shaft axis of described first trunnion shaft (3) is positioned at a vertically side of radial line of bent axle (1) main journal (1b); The shaft axis of described secondary balance shaft (4) is positioned at the vertically opposite side of radial line of bent axle (1) main journal (1b).
6. the two-shaft balancing device of motor according to claim 5; It is characterized in that the distance between the vertical radial line of the vertical radial line of described first trunnion shaft (3) and bent axle (1) main journal (1b) is less than the vertical radial line of secondary balance shaft (4) and the distance between the vertical radial line of bent axle (1) main journal (1b).
7. according to the two-shaft balancing device of any described motor in the claim 1 to 4, it is characterized in that described balance portion (6) is 0.18～0.62 with respect to the weight of a regions of tooth portion (7) one radial lines and the part by weight value in opposite side zone.
8. according to the two-shaft balancing device of any described motor in the claim 1 to 4; It is characterized in that; The axle center of described bent axle (1) rod journal (1a) is in and bent axle (1) main journal (1b) vertically during the radial line intersection, and described that balance portion (6) is divided into a regions is perpendicular with tooth portion (7) one radial lines and the vertical radial line of bent axle (1) main journal (1b) in opposite side zone.
9. according to the two-shaft balancing device of any described motor in the claim 1 to 4, it is characterized in that the ratio value of described tooth portion's (7) width and axial region (5) length is 0.25～0.5.
10. the two-shaft balancing device of motor according to claim 9 is characterized in that, the two ends of described axial region (5) all link to each other with casing (10) through bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104327362A CN102537205A (en) | 2011-12-21 | 2011-12-21 | Double-shaft balance device of engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104327362A CN102537205A (en) | 2011-12-21 | 2011-12-21 | Double-shaft balance device of engine |
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| CN102537205A true CN102537205A (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104327362A Pending CN102537205A (en) | 2011-12-21 | 2011-12-21 | Double-shaft balance device of engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671705A (en) * | 2012-08-31 | 2014-03-26 | 日立汽车系统株式会社 | Engine balancer |
| CN103953684A (en) * | 2014-05-07 | 2014-07-30 | 广西玉柴机器股份有限公司 | Balancing shaft mechanism of engine |
| CN103994178A (en) * | 2014-05-30 | 2014-08-20 | 徐亚珍 | Motorcycle balance shaft gear assembly |
| CN107856058A (en) * | 2017-12-06 | 2018-03-30 | 华北理工大学 | A kind of industrial robot joint drive device |
| CN108603533A (en) * | 2016-02-23 | 2018-09-28 | 日立汽车系统株式会社 | The balancing device of balancing device and internal combustion engine |
| CN111536199A (en) * | 2020-04-20 | 2020-08-14 | 奇瑞汽车股份有限公司 | Engine balance shaft module |
| CN114110088A (en) * | 2021-11-16 | 2022-03-01 | 奇瑞汽车股份有限公司 | Engine balance module and vehicle |
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| CN1924394A (en) * | 2005-08-29 | 2007-03-07 | 奇瑞汽车有限公司 | Engine crankshaft balance shaft mechanism |
| DE102006009093A1 (en) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Internal combustion piston engine for motorcycle has number of balance shafts variable depending upon configuration of motorcycle, wherein balance shafts serve as drive for generator driven at double crankshaft speed |
| CN201013830Y (en) * | 2007-02-12 | 2008-01-30 | 潍柴动力股份有限公司 | Engine balance mechanism |
| CN101171439A (en) * | 2005-05-12 | 2008-04-30 | 雷诺股份公司 | Heat engine comprising balance shafts which can be locked by a pin |
| CN201475241U (en) * | 2009-05-25 | 2010-05-19 | 浙江吉利汽车研究院有限公司 | Improved engine double-shaft balance device |
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2011
- 2011-12-21 CN CN2011104327362A patent/CN102537205A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101171439A (en) * | 2005-05-12 | 2008-04-30 | 雷诺股份公司 | Heat engine comprising balance shafts which can be locked by a pin |
| CN1924394A (en) * | 2005-08-29 | 2007-03-07 | 奇瑞汽车有限公司 | Engine crankshaft balance shaft mechanism |
| DE102006009093A1 (en) * | 2006-02-28 | 2007-08-30 | Bayerische Motoren Werke Ag | Internal combustion piston engine for motorcycle has number of balance shafts variable depending upon configuration of motorcycle, wherein balance shafts serve as drive for generator driven at double crankshaft speed |
| CN201013830Y (en) * | 2007-02-12 | 2008-01-30 | 潍柴动力股份有限公司 | Engine balance mechanism |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671705A (en) * | 2012-08-31 | 2014-03-26 | 日立汽车系统株式会社 | Engine balancer |
| CN103953684A (en) * | 2014-05-07 | 2014-07-30 | 广西玉柴机器股份有限公司 | Balancing shaft mechanism of engine |
| CN103994178A (en) * | 2014-05-30 | 2014-08-20 | 徐亚珍 | Motorcycle balance shaft gear assembly |
| CN108603533A (en) * | 2016-02-23 | 2018-09-28 | 日立汽车系统株式会社 | The balancing device of balancing device and internal combustion engine |
| CN107856058A (en) * | 2017-12-06 | 2018-03-30 | 华北理工大学 | A kind of industrial robot joint drive device |
| CN107856058B (en) * | 2017-12-06 | 2023-09-19 | 华北理工大学 | Industrial robot joint driving device |
| CN111536199A (en) * | 2020-04-20 | 2020-08-14 | 奇瑞汽车股份有限公司 | Engine balance shaft module |
| CN114110088A (en) * | 2021-11-16 | 2022-03-01 | 奇瑞汽车股份有限公司 | Engine balance module and vehicle |
| CN114110088B (en) * | 2021-11-16 | 2022-09-16 | 奇瑞汽车股份有限公司 | Engine balance module and vehicle |
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Application publication date: 20120704 |