CN2937647Y - Balance axle - Google Patents

Balance axle Download PDF

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Publication number
CN2937647Y
CN2937647Y CN 200620017498 CN200620017498U CN2937647Y CN 2937647 Y CN2937647 Y CN 2937647Y CN 200620017498 CN200620017498 CN 200620017498 CN 200620017498 U CN200620017498 U CN 200620017498U CN 2937647 Y CN2937647 Y CN 2937647Y
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CN
China
Prior art keywords
center
gravity
counterweight
axle journal
journal
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
Application number
CN 200620017498
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Chinese (zh)
Inventor
方学卫
王少鹏
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BYD Co Ltd
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BYD Co Ltd
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Filing date
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Priority to CN 200620017498 priority Critical patent/CN2937647Y/en
Application granted granted Critical
Publication of CN2937647Y publication Critical patent/CN2937647Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a balancing shaft, which is equipped with a first balanced counterweight whose center of gravity deviates from the rotation center of the balancing shaft. A journal supporting the balancing shaft to rotate is arranged in the axial middle of the first balanced counterweight. The journal has a structure whose center of gravity deviates from the rotation center of the first balance counterweight and the center of gravity of the journal leans to one side of the center of gravity of the first balanced counterweight. A rib is arranged at one side which is symmetrical with the center of gravity along the rotation center of the journal. After the structure is adopted, under the condition that the size of the outer gimbal of the balancing shaft is not changed, the axial size of the journal can be minimized and the weight and the size of the balanced counterweight may be increased and the bending rigidity and the carrying capacity of the journal are not decreased, thus eliminating the two-stage reciprocating inertia force generated by the reciprocating machinery by a vast scale and degrading the noises and the vibration of the engine remarkably.

Description

A kind of trunnion shaft
Technical field
The utility model relates to a kind of trunnion shaft, relates in particular to a kind of balance system of engine that is used for to eliminate the trunnion shaft of two-stage reciprocating inertia force.
Background technique
At present, along with the development of technology and extensively popularizing of automobile, people are more and more higher to the travelling comfort requirement of automobile, and vibration and noise that motor produces are the keys that influences car comfort.During engine running, (this movement parts generally comprises piston to relevant moving element, bent axle, trunnion shaft, connection rod set and flywheel etc.) carrying out linear reciprocating motion and rotation, the size and Orientation of speed periodically changes, produce inertial force and moment of inertia, and (this correlated parts is meant the part that matches with above moving element to affact correlated parts, as cylinder body, passive bearing support etc.) on, in engine operation process, because the periodicity of periodicity in the working procedure and parts motion, rotating inertia force that is produced in the movement process (or claiming centrifugal force) and reciprocal inertia force all are periodically variable, these power can not be cancelled each other in body, the power of passing to supporting also can constantly change, and, because the fluctuation of input torque, also can cause the continuous variation of support reaction, make reciprocating engine produce two-stage reciprocating inertia force.The topmost harm of this unbalanced force is to bring vibration and noise to motor, and the consequence that causes is the wearing and tearing between the aggravation engine part, destroys the matching gap between the part, influences the performance and the life-span of motor.
Consider travelling comfort by bus, generally in middle and high shelves motor, adopt the method that installs Equilibrator additional to eliminate two-stage reciprocating inertia force, can significantly reduce the noise and the vibration of the motor that runs up.In this Equilibrator, because trunnion shaft high speed rotating (rotating speed of general trunnion shaft is 2 times of speed of crankshaft), and under the effect of counterweight, the necked part of rotation balance support axle need have high as far as possible rigidity, so this necked part need have complete circular cross-sectional configuration usually and guarantees its rigidity.Owing to need the weight and volume of motor to require as much as possible little, therefore wish that also the weight and volume of trunnion shaft is as much as possible little, but the uneven weight that guarantees trunnion shaft again big as much as possible (can eliminate the unbalanced force that reciprocating engine produces so as much as possible), so under the situation of the housing size that does not change trunnion shaft, to reduce the weight and the size of necked part as much as possible, increase the weight and the size of counterweight, but, reduced the weight of necked part and its bending rigidity of size and bearing capacity and can not guarantee again.Consider these problems of the prior art, the utility model provides a kind of improved trunnion shaft, can satisfy above-mentioned required requirement.
The model utility content
The trunnion shaft that the utility model purpose promptly is to provide a kind of weight that reduces necked part and size and bending rigidity and bearing capacity can not reduce.
The purpose of this utility model is achieved through the following technical solutions:
A kind of trunnion shaft of the utility model, be provided with first counterweight of its rotating center of deviation of gravity center, be provided with the axle journal of balance support axle rotation at the axial middle part of first counterweight, described axle journal is its rotating center structure of deviation of gravity center, and the center of gravity of this axle journal is partial to center of gravity one side of described first counterweight.
In above-mentioned basis, wherein:
The axial cross section of the described first counterweight center of gravity of the process of described axle journal is stepped, and the larger-size part of its axial cross section is positioned at center of gravity one side of described first counterweight, and the projection on the bigger part of this sectional dimension forms second counterweight.
The axial cross section of the described first counterweight center of gravity of the process of described axle journal is convex, and the larger-size part of its axial cross section is positioned at center of gravity one side of described first counterweight, and the projection on the bigger part of this sectional dimension forms second counterweight.
It also is provided with rib, and this rib is arranged on and the center of gravity of this axle journal side along the rotating center symmetry of this this axle journal.
One end of described rib links to each other with the side of this axle journal.
Described rib is arranged on the both sides of this axle journal.
The radial height of this rib is along with gradually little away from this axle journal.
The utility model compared with prior art, a kind of trunnion shaft of the utility model is partial to center of gravity one side of first counterweight because axle journal is the center of gravity of its rotating center structure of deviation of gravity center and axle journal, again owing on this trunnion shaft, be provided with to be positioned at and be provided with rib along a side of the rotating center symmetry of axle journal with the center of gravity of axle journal, under the situation of the housing size that does not change trunnion shaft, can do the axial dimension of axle journal minimumly, increase the weight and the size of counterweight, its bending rigidity and bearing capacity can not reduce again, thereby eliminate the two-stage reciprocating inertia force that reciprocating engine produces by a larger margin, significantly reduce the noise and the vibration of motor.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Fig. 1 is the schematic perspective view of a kind of trunnion shaft of the utility model.
Fig. 2 is that the master of a kind of trunnion shaft of the utility model looks schematic representation.
Embodiment
See also Fig. 1 to Fig. 2, a kind of trunnion shaft of the utility model comprises the counterweight 1 of its rotating center of deviation of gravity center, support the axle journal 2 of this trunnion shaft rotation, this axle journal 2 is arranged on the middle part of this first counterweight 1, and this first counterweight 1 is axially along these axle journal 2 symmetries.The axial cross section of described first counterweight of the process of described axle journal 21 center of gravity is stepped, the larger-size part 22 of axial cross section of described first counterweight of the process of this axle journal 21 center of gravity is positioned at center of gravity one side of described first counterweight 1, and the projection on the larger-size part 22 of the axial cross section of this axle journal 2 forms second counterweight 21.
Certainly, described axle journal 2 also can be for being the structure of convex, its rotating center of deviation of gravity center such as trapezoidal through the axial cross section of described first counterweight, 1 center of gravity, the larger-size part 22 of axial cross section of described first counterweight of the process of this axle journal 21 center of gravity is positioned at center of gravity one side of described first counterweight 1, and the projection on the larger-size part 22 of axial cross section of described first counterweight of the process of this axle journal 21 center of gravity forms second counterweight 21.
On described trunnion shaft, be positioned at the center of gravity of this axle journal 2 and be provided with rib 3 along a side of the rotating center symmetry of this axle journal 2, usually, this rib 3 is arranged on the both sides of this axle journal 2, one end 30 of this rib 3 links to each other with the side 20 of this axle journal, and the radial height of described rib 3 is along with gradually little away from this axle journal 2.

Claims (7)

1. trunnion shaft, be provided with first counterweight of its rotating center of deviation of gravity center, be provided with the axle journal of balance support axle rotation at the axial middle part of first counterweight, it is characterized in that: described axle journal is its rotating center structure of deviation of gravity center, and the center of gravity of this axle journal is partial to center of gravity one side of described first counterweight.
2. trunnion shaft according to claim 1, it is characterized in that: the axial cross section of the described first counterweight center of gravity of the process of described axle journal is stepped, the larger-size part of its axial cross section is positioned at center of gravity one side of described first counterweight, and the projection on the bigger part of this sectional dimension forms second counterweight.
3. trunnion shaft according to claim 1, it is characterized in that: the axial cross section of the described first counterweight center of gravity of the process of described axle journal is convex, the larger-size part of its axial cross section is positioned at center of gravity one side of described first counterweight, and the projection on the bigger part of this sectional dimension forms second counterweight.
4. trunnion shaft according to claim 1 is characterized in that: it also is provided with rib, and this rib is arranged on and the center of gravity of this axle journal side along the rotating center symmetry of this this axle journal.
5. trunnion shaft according to claim 4 is characterized in that: an end of described rib links to each other with the side of this axle journal.
6. according to claim 4 or 5 described trunnion shafves, it is characterized in that: described rib is arranged on the both sides of this axle journal.
7. according to claim 4 or 5 described trunnion shafves, it is characterized in that: the radial height of this rib is along with gradually little away from this axle journal.
CN 200620017498 2006-06-16 2006-06-16 Balance axle Expired - Lifetime CN2937647Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620017498 CN2937647Y (en) 2006-06-16 2006-06-16 Balance axle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620017498 CN2937647Y (en) 2006-06-16 2006-06-16 Balance axle

Publications (1)

Publication Number Publication Date
CN2937647Y true CN2937647Y (en) 2007-08-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200620017498 Expired - Lifetime CN2937647Y (en) 2006-06-16 2006-06-16 Balance axle

Country Status (1)

Country Link
CN (1) CN2937647Y (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101988555A (en) * 2010-11-09 2011-03-23 奇瑞汽车股份有限公司 Balance shaft and engine balancing mechanism applying same
CN101994777A (en) * 2009-08-08 2011-03-30 谢夫勒科技有限两合公司 Mass balancing mechanism
CN105540336A (en) * 2014-10-22 2016-05-04 村田机械株式会社 Tension applying component, yarn storage device and yarn rolling apparatus
CN105805228A (en) * 2016-05-19 2016-07-27 江苏凌特精密机械销售有限公司 Corrosion-resistance balance shaft
CN106641178A (en) * 2015-11-02 2017-05-10 株式会社三共制作所 Roller gear cam mechanism
CN111989508A (en) * 2018-06-27 2020-11-24 舍弗勒技术股份两合公司 Unbalanced shaft

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101994777A (en) * 2009-08-08 2011-03-30 谢夫勒科技有限两合公司 Mass balancing mechanism
CN101994777B (en) * 2009-08-08 2014-07-16 谢夫勒科技股份两合公司 Mass balancing mechanism
CN101988555A (en) * 2010-11-09 2011-03-23 奇瑞汽车股份有限公司 Balance shaft and engine balancing mechanism applying same
CN105540336A (en) * 2014-10-22 2016-05-04 村田机械株式会社 Tension applying component, yarn storage device and yarn rolling apparatus
CN105540336B (en) * 2014-10-22 2019-06-07 村田机械株式会社 Tension member of imparting, yarn storage device and Yarn reeling device
CN106641178A (en) * 2015-11-02 2017-05-10 株式会社三共制作所 Roller gear cam mechanism
CN106641178B (en) * 2015-11-02 2021-02-05 株式会社三共制作所 Roller gear cam mechanism
CN105805228A (en) * 2016-05-19 2016-07-27 江苏凌特精密机械销售有限公司 Corrosion-resistance balance shaft
CN105805228B (en) * 2016-05-19 2018-08-10 宜兴高泰克精密机械有限公司 A kind of corrosion-resistant balance shaft
CN111989508A (en) * 2018-06-27 2020-11-24 舍弗勒技术股份两合公司 Unbalanced shaft
CN111989508B (en) * 2018-06-27 2022-06-14 舍弗勒技术股份两合公司 Unbalanced shaft

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C14 Grant of patent or utility model
GR01 Patent grant
CX01 Expiry of patent term

Granted publication date: 20070822

EXPY Termination of patent right or utility model