CN219755230U - Split type balance mechanism driven by idler wheel - Google Patents
Split type balance mechanism driven by idler wheel Download PDFInfo
- Publication number
- CN219755230U CN219755230U CN202321067423.6U CN202321067423U CN219755230U CN 219755230 U CN219755230 U CN 219755230U CN 202321067423 U CN202321067423 U CN 202321067423U CN 219755230 U CN219755230 U CN 219755230U
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- balance
- balance shaft
- gear
- shaft
- idler
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- 230000007246 mechanism Effects 0.000 title claims abstract description 27
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 description 9
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
The utility model discloses a split type balance mechanism driven by an idler wheel, which comprises a split type upper shell and a split type lower shell, wherein a first balance shaft assembly and a second balance shaft assembly which are arranged in parallel are arranged between the upper shell and the lower shell; the first balance shaft assembly comprises a first balance shaft, a balance block integrally formed with the first balance shaft is arranged on the first balance shaft, and a first balance shaft gear and a driving gear are assembled on the first balance shaft; the second balance shaft assembly comprises a second balance shaft, a balance block integrally formed with the second balance shaft is arranged on the second balance shaft, and a second balance shaft gear is assembled on the second balance shaft; the driving gear is meshed with the idler gear, and the idler gear is meshed with the engine crankshaft gear ring for transmission. The split type balance mechanism provided by the utility model can transmit reliable torque under the condition of reducing the volume as much as possible, and ensures that the performance requirement of an engine is met.
Description
Technical Field
The utility model relates to a balancing mechanism, in particular to a split balancing mechanism driven by an idler wheel, and belongs to the technical field of engine balancing mechanisms.
Background
In the automobile industry, the in-line four-cylinder engine has obvious matching advantages due to small external dimensions, and is increasingly widely applied. The engine should have low noise and good maneuverability, smoothness of running and comfort of riding. The in-line four-cylinder engine has the characteristic of its own structure, and the two-stage reciprocating inertial force generated in the running process is overlapped with each other in the four cylinders, so that the low-frequency vibration of the engine is caused. To eliminate the influence of such inertial force, a balancing mechanism must be added to achieve external balance. However, since the installation space inside the engine is very limited, it is necessary to reduce the volume of the balancing mechanism as much as possible.
The existing in-line four-cylinder engine balance mechanism adopts an integral structure, and adopts a structure that a balance shaft sequentially passes through a shell, a balance weight and a balance gear shaft hole. The structure is simple and convenient to install, but the shell is large in appearance, if the size of the shell is reduced, the diameter of the shaft hole and the appearance of the balance weight are correspondingly reduced, and the shaft diameter is too thin or the wall thickness of the shaft hole of the balance weight is too thin, so that reliable torque cannot be transmitted. At the same time, the two balance shaft gears only allow the driving gear to be meshed with the crankshaft gear, and in order to avoid interference, only the driven gear can be moved downwards, so that the size of the shell is further increased.
When the installation space inside the engine is further reduced in a compact manner, the conventional integrated balance mechanism cannot be installed and used due to space limitation.
Disclosure of Invention
Aiming at the defects in the background technology, the utility model provides a split type balance mechanism driven by an idler wheel, which can transmit reliable torque under the condition of reducing the volume as much as possible and ensure that the performance requirement of an engine is met.
In order to solve the technical problems, the utility model adopts the following technical scheme:
the split type balance mechanism driven by the idler wheel comprises a split type upper shell and a split type lower shell, wherein a first balance shaft assembly and a second balance shaft assembly which are arranged in parallel are arranged between the upper shell and the lower shell;
the first balance shaft assembly comprises a first balance shaft, a balance block integrally formed with the first balance shaft is arranged on the first balance shaft, and a first balance shaft gear and a driving gear are assembled on the first balance shaft; the second balance shaft assembly comprises a second balance shaft, a balance block integrally formed with the second balance shaft is arranged on the second balance shaft, and a second balance shaft gear is assembled on the second balance shaft;
the driving gear is meshed with the idler gear, and the idler gear is meshed with the engine crankshaft gear ring for transmission.
Further, the second balance shaft gear is in meshed connection with the first balance shaft gear.
Further, a plurality of semicircular shaft holes are formed in the opposite inner ends of the upper shell and the lower shell, balance bearing bushes of semicircular structures are arranged in the semicircular shaft holes, clamping groove structures and shaft holes are arranged on the balance bearing bushes for positioning, and the balance bearing bushes are buckled on the upper side and the lower side of the first balance shaft and the upper side and the lower side of the second balance shaft.
Further, the opposite ends of the upper shell and the lower shell are positioned and installed through hollow positioning pins.
Further, a second bolt penetrates through the hollow locating pin, the second bolt penetrates through the upper shell and the lower shell, and the second bolt is used for fastening and connecting the upper shell and the lower shell.
Further, an idler gear is arranged on the hub in a penetrating way, and a gear bushing is arranged between an inner hole of the idler gear and the excircle of the hub; the hub is fixedly connected to the upper housing by pins and is fixedly connected to the end of the upper housing by first bolts.
Further, a gear protection cover is arranged on the outer side of the driving gear, and the gear protection cover is arranged at the end parts of the upper shell and the lower shell.
Further, oil holes are formed between the upper and lower housings, and between the first and second balance shafts and the hub, and are communicated with each other.
Further, a detachable locking pin is arranged on the back surface of the lower shell far away from the upper shell.
After the technical scheme is adopted, compared with the prior art, the utility model has the following advantages:
the traditional balance shaft and balance block are arranged in a separated and pressed mode to be of an integral structure, reliable torque transmission can be guaranteed, and the shell is arranged to be of a split type upper shell structure and a split type lower shell structure, so that the placement and installation of the balance shaft and the balance shaft gear are guaranteed; an idler gear is additionally arranged on the upper shell, so that the balance mechanism is connected with a crankshaft gear ring of the engine, and the installation is convenient; on the premise of improving the reliability of the engine, the installation space is greatly saved, the structural strength of the in-line engine is enhanced, the comfort of the whole vehicle is improved, and the in-line engine is widely applied.
The utility model will now be described in detail with reference to the drawings and examples.
Drawings
FIG. 1 is a perspective view of the structure of the present utility model;
FIG. 2 is a schematic view of the structure of the present utility model with the upper housing removed;
FIG. 3 is a schematic structural view of a first balance shaft assembly;
FIG. 4 is a schematic structural view of a second balance shaft assembly;
fig. 5 is a cross-sectional view of the structure of the present utility model.
In the figure, 1-a first bolt; 2-hub; 3-idler gears; 4-pins; 5-an upper housing; 6-a lower housing; 7-a hollow locating pin; 8-a second bolt; 9-balancing the bearing bush; 10-pulling a rivet; 11-a gear protection cover; 12-gear bushing; 13-locking pins; 14-first balance shaft assembly 1401-first balance shaft, 1402-first balance shaft gear, 1403-drive gear; 15-a second balance shaft assembly 1501-a second balance shaft, 1502-a second balance shaft gear; 16-oil passing hole.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present utility model, a specific embodiment of the present utility model will be described with reference to the accompanying drawings.
As shown in fig. 1-5 together, the present utility model provides an idler driven split balance mechanism comprising split upper and lower housings 5 and 6, with first and second balance shaft assemblies 14 and 15 disposed in parallel between the upper and lower housings 5 and 6.
The first balance shaft assembly 14 includes a first balance shaft 1401, a balance block integrally formed with the first balance shaft 1401 is provided on the first balance shaft 1401, and a first balance shaft gear 1402 and a driving gear 1403 are provided on the first balance shaft 1401.
The second balance shaft assembly 15 includes a second balance shaft 1501, a balance block integrally formed with the second balance shaft 1501 is disposed on the second balance shaft 1501, a second balance shaft gear 1502 is disposed on the second balance shaft 1501, and the second balance shaft gear 1502 is engaged with the first balance shaft gear 1402.
The inner ends of the upper shell 5 and the lower shell 6 in opposite directions are provided with a plurality of semicircular shaft holes, the semicircular shaft holes are internally provided with balance bearing bushes 9 with semicircular structures, the balance bearing bushes 9 are provided with clamping groove structures and shaft holes for positioning, the balance bearing bushes 9 are buckled on the upper side and the lower side of the first balance shaft 1401 and the second balance shaft 1501, and the shaft heads of the first balance shaft 1401 and the second balance shaft 1501 are prevented from being worn with the upper shell 5 and the lower shell 6.
The opposite ends of the upper shell 5 and the lower shell 6 are positioned and installed through the hollow positioning pin 7, the hollow positioning pin 7 is internally provided with a second bolt 8 in a penetrating way, the second bolt 8 penetrates through the upper shell 5 and the lower shell 6, and the second bolt 8 is used for realizing fastening connection between the upper shell 5 and the lower shell 6.
The driving gear 1403 is in meshed connection with the idler gear 3, the idler gear 3 is arranged on the hub 2 in a penetrating way, and a gear bushing 12 is arranged between an inner hole of the idler gear 3 and the outer circle of the hub 2; the hub 2 is positionally connected to the upper housing 5 by pins 4 and is fixedly connected to the end of the upper housing 5 by first bolts 1. The number of first bolts 1 is preferably three.
The idler gear 3 is meshed with the engine crankshaft gear ring for transmission, and the idler gear 3 transmits power of the engine crankshaft gear ring to the balance mechanism.
The outside of drive gear 1403 is equipped with gear protection casing 11, and gear protection casing 11 installs the tip of last casing 5 and lower casing 6, and gear protection casing 11 is used for protecting drive gear 1403, prevents to beat the tooth.
Oil passing holes 16 are respectively arranged between the upper shell 5 and the lower shell 6 and between the first balance shaft 1401 and the second balance shaft 1501 and the hub 2, and the oil passing holes 16 are communicated with each other to play a role of oil passing lubrication.
In order to realize the processing of the oil passing holes 16, the oil passing holes 16 are arranged as long through holes, and after the smoothness of each oil passing hole 16 is ensured, one end of the oil passing hole 16 is firmly blocked by adopting a pull rivet 10.
The lower housing 6 is provided with a detachable locking pin 13 on the back surface far away from the upper housing 5, the installation position of the first balance shaft assembly 14 is fixed accurately through the locking pin 13, after the balance mechanism is installed on the engine, the locking pin 13 is taken down, and gears on the first balance shaft 1401 and the second balance shaft 1501 can be positioned to the meshing position more quickly and accurately through the locking pin 13.
The specific working principle of the utility model is as follows:
the traditional balance shaft and balance block are arranged in a separated and pressed mode to be of an integral structure, reliable torque transmission can be guaranteed, and the shell is arranged to be of a split type upper shell structure and a split type lower shell structure, so that the placement and installation of the balance shaft and the balance shaft gear are guaranteed; an idler gear is additionally arranged on the upper shell, so that the balance mechanism is connected with a crankshaft gear ring of the engine, and the installation is convenient; on the premise of improving the reliability of the engine, the installation space is greatly saved, the structural strength of the in-line engine is enhanced, the comfort of the whole vehicle is improved, and the in-line engine is widely applied.
The foregoing is illustrative of the best mode of carrying out the utility model, and is not presented in any detail as is known to those of ordinary skill in the art. The protection scope of the utility model is defined by the claims, and any equivalent transformation based on the technical teaching of the utility model is also within the protection scope of the utility model.
Claims (9)
1. An idler driven split balancing mechanism, characterized in that: comprises a split upper shell (5) and a split lower shell (6), wherein a first balance shaft assembly (14) and a second balance shaft assembly (15) which are arranged in parallel are arranged between the upper shell (5) and the lower shell (6);
the first balance shaft assembly (14) comprises a first balance shaft (1401), a balance block integrally formed with the first balance shaft (1401) is arranged on the first balance shaft (1401), and a first balance shaft gear (1402) and a driving gear (1403) are assembled on the first balance shaft (1401); the second balance shaft assembly (15) comprises a second balance shaft (1501), a balance block integrally formed with the second balance shaft (1501) is arranged on the second balance shaft (1501), and a second balance shaft gear (1502) is assembled on the second balance shaft (1501);
the driving gear (1403) is meshed with the idler gear (3), and the idler gear (3) is meshed with the engine crankshaft gear ring for transmission.
2. An idler driven split balance mechanism as claimed in claim 1 wherein: the second balance shaft gear (1502) is in meshed connection with the first balance shaft gear (1402).
3. An idler driven split balance mechanism as claimed in claim 1 wherein: the inner ends of the upper shell (5) and the lower shell (6) in the opposite direction are respectively provided with a plurality of semicircular shaft holes, balance bearing bushes (9) with semicircular structures are respectively arranged in the semicircular shaft holes, clamping groove structures and shaft hole positioning are arranged on the balance bearing bushes (9), and the balance bearing bushes (9) are buckled on the upper side and the lower side of the first balance shaft (1401) and the upper side and the lower side of the second balance shaft (1501).
4. An idler driven split balance mechanism as claimed in claim 1 wherein: the opposite ends of the upper shell (5) and the lower shell (6) are positioned and installed through a hollow positioning pin (7).
5. An idler driven split balance mechanism as claimed in claim 4 wherein: a second bolt (8) is arranged in the hollow locating pin (7) in a penetrating mode, the second bolt (8) penetrates through the upper shell (5) and the lower shell (6), and the second bolt (8) is used for fastening and connecting the upper shell (5) and the lower shell (6).
6. An idler driven split balance mechanism as claimed in claim 1 wherein: the idler gear (3) is arranged on the hub (2) in a penetrating way, and a gear bushing (12) is arranged between the inner hole of the idler gear (3) and the outer circle of the hub (2); the hub (2) is connected with the upper housing (5) by a pin (4) and is fixedly connected with the end of the upper housing (5) by a first bolt (1).
7. An idler driven split balance mechanism as claimed in claim 1 wherein: the outside of the driving gear (1403) is provided with a gear protection cover (11), and the gear protection cover (11) is arranged at the end parts of the upper shell (5) and the lower shell (6).
8. An idler driven split balance mechanism as claimed in claim 1 wherein: oil passing holes (16) are respectively arranged between the upper shell (5) and the lower shell (6) and between the first balance shaft (1401) and the second balance shaft (1501) and the hub (2), and the oil passing holes (16) are mutually communicated.
9. An idler driven split balance mechanism as claimed in claim 1 wherein: the back of the lower shell (6) far away from the upper shell (5) is provided with a detachable locking pin (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067423.6U CN219755230U (en) | 2023-05-06 | 2023-05-06 | Split type balance mechanism driven by idler wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321067423.6U CN219755230U (en) | 2023-05-06 | 2023-05-06 | Split type balance mechanism driven by idler wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219755230U true CN219755230U (en) | 2023-09-26 |
Family
ID=88077740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321067423.6U Active CN219755230U (en) | 2023-05-06 | 2023-05-06 | Split type balance mechanism driven by idler wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219755230U (en) |
-
2023
- 2023-05-06 CN CN202321067423.6U patent/CN219755230U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |