CN208203956U - The crank pulley of three-cylinder engine - Google Patents
The crank pulley of three-cylinder engine Download PDFInfo
- Publication number
- CN208203956U CN208203956U CN201820625000.4U CN201820625000U CN208203956U CN 208203956 U CN208203956 U CN 208203956U CN 201820625000 U CN201820625000 U CN 201820625000U CN 208203956 U CN208203956 U CN 208203956U
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- CN
- China
- Prior art keywords
- inner headed
- headed face
- crank pulley
- crankshaft
- thrust surface
- 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.)
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- Pulleys (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a kind of crank pulley of three-cylinder engine, including wheel hub, wheel hub has the centre bore for allowing crankshaft to be inserted into, and the thrust surface for playing position-limiting action to crankshaft in the axial direction is equipped in centre bore, thrust surface is circular conical surface.The crank pulley of the utility model three-cylinder engine, by the way that thrust surface is arranged in hub interior, a slope is formed at hub interior and crankshaft cooperation position, eliminates existing gap, the effective fretting for reducing crank pulley when crank pulley and crankshaft assembly.
Description
Technical field
The utility model belongs to technical field of engines, specifically, the utility model relates to a kind of three-cylinder engines
Crank pulley.
Background technique
The crank pulley of three-cylinder engine is assemblied in crankshaft front end, and crank pulley is to be bolted on crankshaft
On, and phase is limited by key, keyway is provided on crankshaft and crank pulley, this fit system assembly is simple, holds very much
Easily realize.But these slight clearances will lead to fretting in the operational process of real engine, lead to engine maintenance
When crankshaft band belt pulley be difficult to dismantle.
Utility model content
The utility model aims to solve at least one of the technical problems existing in the prior art.For this purpose, the utility model mentions
For a kind of crank pulley of three-cylinder engine, it is therefore an objective to reduce fretting.
To achieve the goals above, the technical solution that the utility model is taken are as follows: the crank pulley of three-cylinder engine, packet
Wheel hub is included, wheel hub has the centre bore for allowing crankshaft to be inserted into, is equipped in the centre bore and makees for playing limit to crankshaft in the axial direction
Thrust surface, thrust surface are circular conical surface.
The first inner headed face and the second inner headed face are additionally provided in the centre bore, the thrust surface is located at the first inner headed face and
Between two inner headed faces and thrust surface and the first inner headed face and the second inner headed face are coaxial arrangement, and the diameter of the first inner headed face is greater than the
The diameter of two inner headed faces.
The length of first inner headed face is greater than the length of second inner headed face, the diameter of the bigger diameter end of the thrust surface
Identical as the diameter of the first inner headed face, the diameter of the miner diameter end of thrust surface is identical as the diameter of the second inner headed face.
The crank pulley of the utility model three-cylinder engine, by the way that thrust surface is arranged in hub interior, in hub interior
With one slope of formation at crankshaft cooperation position, existing gap, effective reduction when crank pulley and crankshaft assembly are eliminated
The fretting of crank pulley.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the cross-sectional view of the crank pulley of the utility model three-cylinder engine；
Fig. 2 is the main view of the crank pulley of the utility model three-cylinder engine；
Fig. 3 is enlarged drawing at A in Fig. 1；
Fig. 4 is the structural schematic diagram of crank pulley Yu crankshaft junction；
In the figure, it is marked as 1, rubber ring；2, belt pulley；3, wheel hub；301, the first inner headed face；302, the second inner headed face；
303, thrust surface；4, crankshaft.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to specific embodiment of the present utility model further detailed
Thin explanation, it is therefore an objective to help those skilled in the art to the design of the utility model, technical solution have it is more complete, accurate and
Deep understanding, and facilitate its implementation.
As shown in Figures 1 to 4, the utility model provides a kind of crank pulley of three-cylinder engine, including wheel hub 3,
Wheel hub 3 has the centre bore for allowing crankshaft to be inserted into, and the thrust surface for playing position-limiting action to crankshaft in the axial direction is equipped in centre bore
303, thrust surface 303 is circular conical surface.
Specifically, as depicted in figs. 1 and 2, the crank pulley of the utility model includes wheel hub 3, belt pulley 2 and rubber
Ring 1, rubber ring 1 are the structure of circular ring shape, and rubber ring 1 is attached on the outer circumference surface of wheel hub 3, and belt pulley 2 is attached to rubber ring 1
Outer circumference surface on.Wheel hub 3 is mainly made of wheel shaft, spoke and wheel rim, and wheel shaft is cylindrical structure, at the center of wheel shaft
With centre bore (namely centre bore of wheel hub 3), centre bore is at the center of wheel shaft axially through the circular through hole of setting,
For allowing crankshaft to be inserted into.Wheel rim is the structure of circular ring shape, and rubber ring 1 is attached on the outer circumference surface of wheel rim.Spoke is located at wheel shaft
Between wheel rim and spoke is fixedly connected with wheel shaft and wheel rim, and spoke is arranged three altogether and three spokes are all in the outer lateral edge of wheel shaft
To being uniformly distributed.
As shown in Figures 1 to 4, it is additionally provided with the first inner headed face 301 and the second inner headed face 302 in the centre bore of wheel hub 3, first
Inner headed face 301 and the second inner headed face 302 are cylindrical surface, and thrust surface 303 is located at the first inner headed face 301 and the second inner headed face 302
Between and thrust surface 303 and the first inner headed face 301 and the second inner headed face 302 be coaxial arrangement, the diameter of the first inner headed face 301 is big
In the diameter of the second inner headed face 302.First inner headed face 301, the second inner headed face 302 and thrust surface 303 constitute the inner wall of centre bore
Face, the first inner headed face 301, thrust surface 303 and the second inner headed face 302 are sequentially arranged for the axial direction along centre bore.First inner headed face
301 length is greater than the length of the second inner headed face 302, and the first inner headed face 301 surrounds crankshaft, it is ensured that crankshaft has enough insertions
Depth, it is ensured that the reliability that crank pulley is connect with crankshaft.Thrust surface 303 has a bigger diameter end and a miner diameter end, bent
The diameter of the bigger diameter end of axis is greater than the diameter of miner diameter end, the diameter of the diameter of the bigger diameter end of thrust surface 303 and the first inner headed face 301
Size is identical, and the diameter of the miner diameter end of thrust surface 303 is identical as the diameter of the second inner headed face 302, the bigger diameter end of crankshaft with
One end margin of the first inner headed face 301 connects, and the miner diameter end of crankshaft is connect with an end margin of the second inner headed face 302.In crankshaft
After being inserted into the centre bore of wheel hub 3, since the diameter of the miner diameter end of thrust surface 303 is less than the end diameter of crankshaft, crankshaft
End eventually contradicted with thrust surface 303, thrust surface 303 forms a slope at the inside of wheel hub 3 and crankshaft cooperation position,
Existing gap, the effective fretting for reducing crank pulley when crank pulley and crankshaft assembly can be eliminated.Thrust
The taper in face 303 is preferably sized to 15.15 ° ± 0.15 °, and effect is best.
Preferably, wheel hub 3 is equipped with reinforcing rib, reinforcing rib is located at the inside of wheel rim, reinforcing rib and wheel rim and spoke
Connection, the setting of reinforcing rib can make wheel hub 3 enhance its intensity while keeping initial quality or even mitigating quality, improve bent
The performance of shaft pulley.
The utility model is exemplarily described in conjunction with attached drawing above.Obviously, the utility model implements not
It is limited by aforesaid way.As long as the various unsubstantialities that the method concept and technical solution that use the utility model carry out
Improvement；Or it is not improved, the above-mentioned conception and technical scheme of the utility model are directly applied into other occasions, at this
Within the protection scope of utility model.
Claims (3)
1. the crank pulley of three-cylinder engine, including wheel hub, wheel hub has the centre bore for allowing crankshaft to be inserted into, it is characterised in that:
The thrust surface for playing position-limiting action to crankshaft in the axial direction is equipped in the centre bore, thrust surface is circular conical surface.
2. the crank pulley of three-cylinder engine according to claim 1, it is characterised in that: be additionally provided in the centre bore
First inner headed face and the second inner headed face, the thrust surface is between the first inner headed face and the second inner headed face and thrust surface and first
Inner headed face and the second inner headed face are coaxial arrangement, and the diameter of the first inner headed face is greater than the diameter of the second inner headed face.
3. the crank pulley of three-cylinder engine according to claim 2, it is characterised in that: the length of first inner headed face
Degree is greater than the length of second inner headed face, the diameter phase of the diameter of the bigger diameter end of the thrust surface and the first inner headed face
Together, the diameter of the miner diameter end of thrust surface is identical as the diameter of the second inner headed face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625000.4U CN208203956U (en) | 2018-04-28 | 2018-04-28 | The crank pulley of three-cylinder engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820625000.4U CN208203956U (en) | 2018-04-28 | 2018-04-28 | The crank pulley of three-cylinder engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208203956U true CN208203956U (en) | 2018-12-07 |
Family
ID=64521286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820625000.4U Active CN208203956U (en) | 2018-04-28 | 2018-04-28 | The crank pulley of three-cylinder engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208203956U (en) |
-
2018
- 2018-04-28 CN CN201820625000.4U patent/CN208203956U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |