CN217002633U - Lightweight eccentric shaft shafting structure of air-cooled rotor engine - Google Patents
Lightweight eccentric shaft shafting structure of air-cooled rotor engine Download PDFInfo
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- CN217002633U CN217002633U CN202123281760.9U CN202123281760U CN217002633U CN 217002633 U CN217002633 U CN 217002633U CN 202123281760 U CN202123281760 U CN 202123281760U CN 217002633 U CN217002633 U CN 217002633U
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- 239000013585 weight reducing agent Substances 0.000 claims description 8
- 230000000977 initiatory effect Effects 0.000 claims description 5
- 230000005484 gravity Effects 0.000 claims description 4
- 230000009467 reduction Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a lightweight eccentric shaft shafting structure of an air-cooled rotor engine, which comprises an eccentric shaft and is characterized in that an eccentric disc is arranged on the eccentric shaft, the center of the eccentric disc is not coincident with the axis of the eccentric shaft, a plurality of holes are formed in the eccentric disc along the radial direction of the eccentric disc, a rotor is rotatably arranged on the eccentric disc, a starting integrated motor and a fan are respectively assembled at two ends of the eccentric shaft, which are positioned on the eccentric disc, a first balancing weight for balancing the rotation of the eccentric shaft is arranged at the outer side of the starting integrated motor, and a second balancing weight for balancing the rotation of the eccentric shaft is arranged at the outer side of the fan; the engine has the advantages of high reliability and long service life, realizes the light weight of the whole structure, and improves the power-weight ratio of the engine.
Description
Technical Field
The utility model belongs to the technical field of aero-engines, and particularly relates to a lightweight eccentric shaft system structure of an air-cooled rotor engine.
Background
Compared with a piston engine, the rotary engine has the advantages of less parts, compact structure, high power-weight ratio, small working vibration, low noise and the like, and is indispensable for further improving the power-weight ratio of the rotary engine and designing light weight; in the aspect of improving the thrust-weight ratio, the weight of the main part can be reduced, but the problems of strength reduction, increased friction and wear, reduced combustion efficiency and the like can be caused by simply replacing the main part with light alloy, the mechanical efficiency of the engine is reduced, and a series of problems are caused; in the main parts of the rotor, the eccentric shaft is used as a key rotating part, and the weight of the eccentric shaft not only influences the weight of the whole machine, but also plays a vital role in the vibration of a rotor engine.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a light-weight eccentric shaft system structure of an air-cooled rotor engine, which has the advantages of high reliability and long service life and realizes the light weight of the whole structure.
In order to solve the technical problems, the utility model aims to realize the following technical scheme: the lightweight eccentric shaft shafting structure of the air-cooled rotor engine comprises an eccentric shaft and is characterized in that an eccentric disc is arranged on the eccentric shaft, the center of the eccentric disc does not coincide with the axis of the eccentric shaft, a plurality of holes are formed in the eccentric disc in the radial direction of the eccentric disc, a rotor is arranged on the eccentric disc in a rotating mode, an initiation integrated motor and a fan are respectively assembled at two ends of the eccentric disc on the eccentric shaft, a first balancing weight used for balancing the rotation of the eccentric shaft is arranged on the outer side of the initiation integrated motor, and a second balancing weight used for balancing the rotation of the eccentric shaft is arranged on the outer side of the fan.
Furthermore, the first balancing weight and the second balancing weight are both T-shaped, and the gravity center orientation of the first balancing weight and the gravity center orientation of the second balancing weight are both opposite to the deviation of the eccentric disc.
Further, a needle bearing is arranged between the eccentric disc and the rotor.
Furthermore, a plurality of rivet holes are formed in the eccentric disc, rivets are arranged in the rivet holes, and bearing blocking pieces used for limiting the needle roller bearing are fixedly arranged on the two sides of the eccentric disc through the rivets.
Furthermore, a plurality of lightening holes are formed in the eccentric disc.
Furthermore, a cylindrical weight reduction cavity is arranged on the axis of the eccentric shaft.
Furthermore, a belt wheel is arranged on the eccentric shaft and positioned on the outer side of the first balancing weight.
Furthermore, a first bolt is arranged on the eccentric shaft and positioned on the outer side of the belt wheel, and a second bolt is arranged on the eccentric shaft and positioned on the outer side of the second balancing weight.
Furthermore, a deep groove ball bearing is arranged on the eccentric shaft and positioned between the eccentric disc and the fan.
The utility model has the following beneficial effects:
the light-weight eccentric shaft shafting structure of the air-cooled rotor engine can process unbalance generated when the eccentric shaft rotates through the first balancing weight and the second balancing weight, so that the purpose of reducing the vibration of the engine is achieved, the weight of the eccentric shaft can be reduced through the hole opening, the rivet hole, the weight reduction cavity and the weight reduction hole, meanwhile, lubricating oil in incoming air enters the hole opening to lubricate a needle bearing, the service life of the needle bearing can be prolonged, bearing blocking pieces on two sides of the rivet hole can be used for limiting the axial displacement of the needle bearing, the axial slipping of the needle bearing is prevented, along with the reduction of the weight of the eccentric disc part, the weight of the first balancing weight and the weight of the second balancing weight which need to be used for balancing is reduced, so that the weight of the whole engine can be reduced, and the purpose of improving the power-weight ratio of the engine is achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of a lightweight eccentric shaft system structure of an air-cooled rotary engine according to an embodiment of the present invention;
fig. 2 is a sectional view of a lightweight eccentric shaft system structure of an air-cooled rotary engine according to an embodiment of the present invention;
FIG. 3 is a schematic view of an eccentric shaft provided in an embodiment of the present invention;
fig. 4 is a sectional view of an eccentric shaft according to an embodiment of the present invention.
The labels in the figures illustrate:
1-eccentric shaft, 2-eccentric disc, 3-needle bearing, 4-rotor, 5-inspiring integral motor, 6-fan, 7-first balancing weight, 8-second balancing weight, 11-lightening cavity, 12-belt wheel, 13-first bolt, 14-second bolt, 15-deep groove ball bearing, 16-first axial retaining ring, 17-second axial retaining ring, 21-opening hole, 22-rivet hole, 23-rivet and 24-bearing retaining sheet.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used in the specification of the present invention and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.
Examples
Referring to fig. 1-4, a lightweight eccentric shaft system structure of an air-cooled rotary engine according to an embodiment of the present invention includes an eccentric shaft 1, an eccentric disc 2 is arranged in the middle of the eccentric shaft 1, the center of the eccentric disc 2 is not coincident with the axis of the eccentric shaft 1, so that the eccentric distance exists between the eccentric disc 2 and the eccentric shaft 1, three openings 21 are distributed on the eccentric disc 2 along the radial direction, the three openings 21 are respectively positioned at the upper end and the left and the right ends of the eccentric disc 2, a rotor 4 is rotatably arranged on the eccentric disc 2 through a needle bearing 3, an initiation integral motor 5 and a fan 6 are respectively assembled at the two ends of the eccentric disc 2 on the eccentric shaft 1, a first balancing weight 7 for balancing the rotation of the eccentric shaft 1 is arranged on the outer side of the heuristic integrated motor 5, and a second balancing weight 8 for balancing the rotation of the eccentric shaft 1 is arranged on the outer side of the fan 6.
By applying the structure, when in work, the eccentric disc 2 on the eccentric shaft 1 is contacted with the rotor 4 and is used for transmitting torque, the integrated motor 5 is inspired to bear the functions of a common generator motor and a starting motor, namely, torque input and torque output, the fan 6 can accelerate cooling, and because the center of the eccentric disc 2 is not superposed with the axis of the eccentric shaft 1, the eccentric distance between the eccentric disc 2 and the eccentric shaft 1 exists, so the eccentric shaft 1 can generate unbalance when rotating, and the first balancing weight 7 and the second balancing weight 8 can process the unbalance generated when the eccentric shaft 1 rotates, thereby achieving the purpose of reducing the vibration of an engine, the three holes 21 arranged on the eccentric disc 2 can not only reduce the mass of the eccentric disc 2, realize the light weight of the integral structure, but also improve the motion state of the needle bearing 3, lubricating oil (not shown in the figure) in the incoming air can enter the opening 21 to lubricate the needle roller bearing 3, and the service life of the needle roller bearing 3 is prolonged.
Specifically, the first balancing weight 7 and the second balancing weight 8 are both in a T shape, and the directions of the centers of gravity of the first balancing weight 7 and the second balancing weight 8 are both opposite to the deviation of the eccentric disc 2; first balancing weight 7 and second balancing weight 8 assemble respectively and lie in the eccentric disc 2 both ends about on eccentric shaft 1, because the focus orientation of first balancing weight 7 and second balancing weight 8 all is opposite with eccentric disc 2's erroneous tendency, thereby can play certain balancing act when eccentric shaft 1 rotates, the unbalance amount that produces when first balancing weight 7 and second balancing weight 8 combined action rotate eccentric shaft 1 handles, thereby play the purpose that reduces the engine vibration.
Specifically, four rivet holes 22 are formed in the eccentric disc 2, rivets 23 are arranged in the rivet holes 22, and bearing retaining pieces 24 for limiting the needle roller bearings 3 are fixedly arranged on two sides of the eccentric disc 2 through the rivets 23; bearing separation blade 24 can be used for injecing the axial displacement of bearing 3 on the eccentric disc 2, prevents the axial slippage of bearing 3, and simultaneously, four rivet holes 22 can also alleviate the quality of eccentric disc 2, realize overall structure's lightweight.
Specifically, a cylindrical weight reduction cavity 11 is arranged in the eccentric shaft 1 and on the axis of the eccentric shaft 1, three weight reduction holes 25 are arranged on the eccentric disc 2, the weight of the eccentric shaft 1 can be reduced through the weight reduction cavity 11 and the weight reduction holes 25, and meanwhile, along with the reduction of the weight of the eccentric disc 2, the weight of the first balancing weight 7 and the weight of the second balancing weight 8 which are required to be used for balancing are reduced, so that the weight of the whole engine can be reduced, and the purpose of improving the power-to-weight ratio of the engine is achieved.
Specifically, a belt wheel 12 is arranged on the eccentric shaft 1 and positioned at the outer side of a first balancing weight 7, a first bolt 13 is arranged on the eccentric shaft 1 and positioned at the outer side of the belt wheel 12, a second bolt 14 is arranged on the eccentric shaft 1 and positioned at the outer side of a second balancing weight 8, and a deep groove ball bearing 15 is arranged on the eccentric shaft 1 and positioned between the eccentric disc 2 and the fan 6; the belt wheel 12 and the deep groove ball bearing 15 are used for connecting other parts on the air-cooled rotor engine, a first axial retaining ring 16 is further arranged between the first bolt 13 and the belt wheel 12, and a second axial retaining ring 17 is further arranged between the second bolt 14 and the second balancing weight 8.
While the utility model has been described with reference to specific embodiments, the utility model is not limited thereto, and various equivalent modifications and substitutions can be easily made by those skilled in the art within the technical scope of the utility model. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (9)
1. The light eccentric shaft shafting structure of the air-cooled rotor engine comprises an eccentric shaft and is characterized in that an eccentric disc is arranged on the eccentric shaft, the center of the eccentric disc does not coincide with the axis of the eccentric shaft, a plurality of holes are formed in the eccentric disc along the radial direction of the eccentric disc, a rotor is arranged on the eccentric disc in a rotating mode, an initiation integrated motor and a fan are respectively assembled at two ends of the eccentric disc on the eccentric shaft, a first balancing weight used for balancing the rotation of the eccentric shaft is arranged on the outer side of the initiation integrated motor, and a second balancing weight used for balancing the rotation of the eccentric shaft is arranged on the outer side of the fan.
2. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine according to claim 1, wherein said first and second weights are each T-shaped, and the center of gravity of said first and second weights is oriented in the opposite direction to the deflection of said eccentric disks.
3. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine according to claim 2, wherein a needle bearing is provided between said eccentric disc and said rotor.
4. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine according to claim 3, wherein said eccentric disc is provided with a plurality of rivet holes, rivets are provided in said rivet holes, and bearing stoppers for limiting said needle roller bearings are provided at both sides of said eccentric disc by means of rivet fixing.
5. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine as set forth in claim 4, wherein said eccentric disc is provided with a plurality of lightening holes.
6. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine according to claim 5, wherein a cylindrical weight reduction chamber is provided on the axis of said eccentric shaft.
7. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine according to claim 1, wherein a pulley is provided on said eccentric shaft outside said first balance weight.
8. The lightweight eccentric shaft shafting structure of air-cooled rotary engine according to claim 7, wherein a first bolt is provided on said eccentric shaft outside said pulley, and a second bolt is provided on said eccentric shaft outside said second counter weight.
9. The lightweight eccentric shaft shafting structure of the air-cooled rotary engine as set forth in claim 1, wherein deep groove ball bearings are provided on said eccentric shaft between said eccentric disc and said fan.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123281760.9U CN217002633U (en) | 2021-12-24 | 2021-12-24 | Lightweight eccentric shaft shafting structure of air-cooled rotor engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123281760.9U CN217002633U (en) | 2021-12-24 | 2021-12-24 | Lightweight eccentric shaft shafting structure of air-cooled rotor engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217002633U true CN217002633U (en) | 2022-07-19 |
Family
ID=82388226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123281760.9U Active CN217002633U (en) | 2021-12-24 | 2021-12-24 | Lightweight eccentric shaft shafting structure of air-cooled rotor engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217002633U (en) |
-
2021
- 2021-12-24 CN CN202123281760.9U patent/CN217002633U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240429 Address after: Floor 1-4, west side of building B, Huigu Innovation Park, 1123 hangchuang Road, Xi'an national civil aerospace industry base, Shaanxi 710100 Patentee after: XI'AN AERO-SPACE ENGINE & SMART MANUFACTURING INSTITUTE CO.,LTD. Country or region after: China Address before: Room 303, West third floor, building B, Huigu Innovation Park, 1123 hangchuang Road, Xi'an national civil aerospace industry base, Shaanxi 710000 Patentee before: Xi'an Aerospace electromechanical Intelligent Manufacturing Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |