CN212564041U - No-counterweight high-output type light motorcycle crankshaft - Google Patents
No-counterweight high-output type light motorcycle crankshaft Download PDFInfo
- Publication number
- CN212564041U CN212564041U CN202021049677.1U CN202021049677U CN212564041U CN 212564041 U CN212564041 U CN 212564041U CN 202021049677 U CN202021049677 U CN 202021049677U CN 212564041 U CN212564041 U CN 212564041U
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- crank
- bent axle
- left crank
- right crank
- round pin
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Abstract
The utility model discloses a no balancing weight high output type light motorcycle bent axle, the bent axle includes left crank and right crank, left crank and right crank subtend set up, be equipped with the bent axle round pin between left crank and the right crank, left crank passes through the bent axle round pin and is connected with right crank, be equipped with bearing on the bent axle round pin, the connecting rod passes through bearing and is connected with the rotation of bent axle round pin, left crank is close to right crank's tip and is equipped with left crank piece, left crank piece includes installation department and counter weight portion, the installation department is "the wild" shape with the perpendicular connection of counter weight portion, the appearance of counter weight portion is semi-circular, the utility model discloses do not set up the balancing weight, effectively reduce the whole weight of bent axle, improve and rotate output.
Description
Technical Field
The utility model relates to a motorcycle bent axle field specifically relates to a no balancing weight high output type light motorcycle bent axle.
Background
The engine of some motorcycles on the market adopts the crankshaft of two strokes, and this type crankshaft weight ratio is great, mainly because the crank tip is equipped with the balancing weight for the whole weight ratio of crank is great, leads to the bent axle during operation, and mechanical properties can appear inadequately wholly, can not reach the expected bent axle and rotate output.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a no balancing weight high output type light motorcycle bent axle that light is little, efficient.
In order to solve the technical problem, the utility model discloses a technical scheme does:
the utility model provides a no balancing weight high output type light motorcycle bent axle, the bent axle includes left crank and right crank, left side crank with right crank subtend sets up, is equipped with the bent axle round pin between left side crank and the right crank, and left side crank passes through the bent axle round pin to be connected with right crank, is equipped with bearing on the bent axle round pin, and the connecting rod passes through bearing with the bent axle round pin rotates to be connected, and left side crank is close to right crank's tip and is equipped with left crank piece, left side crank piece includes installation department and counter weight portion, the installation department with counter weight portion connects perpendicularly and is "the batch" shape, and the appearance of counter weight portion is semi-circular.
The utility model discloses a further improvement, right crank is close to left crank's tip is equipped with right crank piece, right crank piece with left crank piece structure is the same.
The utility model discloses a further improvement, the top of installation department be equipped with the balancing weight has the same centre of a circle and radial arc surface.
The utility model discloses a further improvement, counter weight portion is equipped with the annular lug of fan, the lug has the same centre of a circle with the balancing weight.
The utility model discloses a further improvement, the installation department is equipped with the boss, the boss is equipped with the mounting hole, the bent axle round pin is located in the mounting hole.
The utility model discloses a further improvement, bearing with left side crank reaches be equipped with the gasket between the right side crank respectively.
Adopt above-mentioned technical scheme, do not have between left crank and the bent axle round pin to set up the balancing weight, directly set the shape of left crank's tip to the left crank piece that can play the corresponding effect of balancing weight, owing to reduced the balancing weight for the whole weight of bent axle reduces, effectively improves pivoted output, the top of installation department is equipped with the arc surface that has the same centre of a circle and radius with the balancing weight in addition, the topside of installation department is on the same circle with the base of balancing weight promptly, it is more smooth and easy when making left crank piece rotate.
Drawings
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a view of the left crank of the present invention in the direction a;
the following are marked in the figure: 1. a left crank; 2. a right crank; 3. a crankpin; 4. a needle bearing; 5. a left crank block; 6. an installation part; 7. a counterweight portion; 8. a bump; 9. a boss; 10. mounting holes; 11. a gasket; 12. a right crank block; 13. a connecting rod.
Detailed Description
Referring to fig. 1-2, an embodiment of the present invention relates to a lightweight motorcycle crankshaft with no weight block and high output, the crankshaft comprises a left crank 1 and a right crank 2, the left crank 1 and the right crank 2 are oppositely arranged, a gap for installing a crank pin 3 is left between the left crank 1 and the right crank 2, the crank pin 3 is arranged between the left crank 1 and the right crank 2, the crank pin 3 is horizontally arranged, the left crank 1 is connected with the right crank 2 through the crank pin 3, so that the left crank 1 and the right crank 2 are connected into a whole, the crank pin 3 is provided with a needle bearing 4, a connecting rod 13 is rotatably connected with the crank pin 3 through the needle bearing 4, the end of the connecting rod 13 is connected with a piston of an engine, the vertical reciprocating motion of the piston is converted into the rotation of the crankshaft through the crank pin 3, the end of the left crank 1 close to the right crank 2 is provided with a left crank block 5, the left crank block, the left crank block 5 comprises a mounting part 6 and a counterweight part 7, the mounting part 6 is used for mounting the crank pin 3, the counterweight part 7 is used for generating rotational inertia when the left crank 1 rotates, so that the rotation is more efficient, therefore, the structure of the mounting part 6 and the counterweight part 7 has requirements, the mounting part 6 is vertically connected with the counterweight part 7, the mounting part 6 is arranged at the vertical bisector of the counterweight part 7, the whole body is in a 'crack' shape, the appearance of the counterweight part 7 is semicircular, no counterweight block is arranged between the left crank 1 and the crank pin 3, the shape of the end part of the left crank 1 is directly set into the left crank block 5 which can play the corresponding role of the counterweight block, the whole weight of the crank shaft is reduced due to the reduction of the counterweight block, the output of the rotation is effectively improved, the top part of the mounting part 6 is provided with an arc surface which has the same circle center and radius with the counterweight block, namely, the, make left crank block 5 more smooth and easy when rotating, the end that right crank 2 is close to left crank 1 is equipped with right crank block 12, and right crank block 12 is the same with left crank block 5 structure, keeps the holistic equilibrium of bent axle.
Counter weight portion 7 is equipped with fan annular lug 8, and lug 8 sets up along counter weight portion 7's bisector symmetry for the weight of balancing weight, the rotatory inertia that produces when making counter weight portion 7 rotate increases, in order to improve bent axle's output, lug 8 has the same centre of a circle with the balancing weight, ensures that lug 8 does not influence the focus of balancing weight, and installation department 6 is equipped with boss 9, and boss 9 is equipped with mounting hole 10, and in mounting hole 10 was located to bent axle pin 3, because the utility model discloses there is not the balancing weight that sets up, consequently with left crank 1 or right crank 2's terminal surface direct wear when preventing that bearing 4 from rotating, be equipped with gasket 11 between bearing 4 and left crank 1 and the right crank 2 respectively, play the effect of location and abrasionproof loss.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in the embodiments without departing from the principles and spirit of the invention, and the scope of the invention is to be accorded the full scope of the claims.
Claims (6)
1. The utility model provides a no balancing weight high output type light motorcycle bent axle which characterized in that: the bent axle includes left crank (1) and right crank (2), left crank (1) with right crank (2) subtend sets up, is equipped with bent axle round pin (3) between left crank (1) and right crank (2), and left crank (1) is connected with right crank (2) through bent axle round pin (3), is equipped with bearing (4) on bent axle round pin (3), and connecting rod (13) pass through bearing (4) with bent axle round pin (3) rotate to be connected, and the tip that left crank (1) is close to right crank (2) is equipped with left crank piece (5), left crank piece (5) are including installation department (6) and counter weight portion (7), installation department (6) with counter weight portion (7) are connected perpendicularly and are "shape of dividing, and the appearance of counter weight portion (7) is semi-circular.
2. The counterweightless high-output scooter crankshaft according to claim 1, wherein: the end part of the right crank (2) close to the left crank (1) is provided with a right crank block (12), and the right crank block (12) has the same structure as the left crank block (5).
3. The counterweightless high-output scooter crankshaft according to claim 1, wherein: the top of installation department (6) be equipped with the balancing weight has the same centre of a circle and the radial cambered surface.
4. The counterweightless high-output scooter crankshaft according to claim 1, wherein: the counterweight part (7) is provided with a sector-shaped lug (8), and the lug (8) and the counterweight block have the same circle center.
5. The counterweightless high-output scooter crankshaft according to claim 1, wherein: the mounting portion (6) is provided with a boss (9), the boss (9) is provided with a mounting hole (10), and the crank pin (3) is arranged in the mounting hole (10).
6. The counterweightless high-output scooter crankshaft according to claim 1, wherein: gaskets (11) are respectively arranged between the needle roller bearing (4) and the left crank (1) and between the needle roller bearing and the right crank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049677.1U CN212564041U (en) | 2020-06-09 | 2020-06-09 | No-counterweight high-output type light motorcycle crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021049677.1U CN212564041U (en) | 2020-06-09 | 2020-06-09 | No-counterweight high-output type light motorcycle crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212564041U true CN212564041U (en) | 2021-02-19 |
Family
ID=74630034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021049677.1U Active CN212564041U (en) | 2020-06-09 | 2020-06-09 | No-counterweight high-output type light motorcycle crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212564041U (en) |
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2020
- 2020-06-09 CN CN202021049677.1U patent/CN212564041U/en active Active
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