CN216344725U - Connecting structure of flywheel end and starting end of mower crankcase - Google Patents
Connecting structure of flywheel end and starting end of mower crankcase Download PDFInfo
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- CN216344725U CN216344725U CN202122539155.0U CN202122539155U CN216344725U CN 216344725 U CN216344725 U CN 216344725U CN 202122539155 U CN202122539155 U CN 202122539155U CN 216344725 U CN216344725 U CN 216344725U
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- crankcase
- flywheel
- pin
- starting end
- starting
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model relates to a connecting structure of a flywheel end and a starting end of a mower crankcase, which comprises the flywheel end and the starting end of the crankcase, and is characterized in that: the connecting surface of the flywheel end is provided with a plurality of first pin holes, and the connecting surface of the starting end is provided with a plurality of second pin holes corresponding to the first pin holes; the bearing hole of the crankcase is processed after the first pin hole and the second pin hole are connected through the positioning pin, the concentricity of the bearing hole of the crankcase and the flatness of the flange face are improved by adopting the technical scheme, the sealing performance of the crankcase and each accessory after assembly is enhanced, and the service function and the service life of a product are improved.
Description
Technical Field
The utility model relates to the field of processing of a flywheel end and a starting end of a mower crankcase, in particular to a connecting structure of the flywheel end and the starting end of the mower crankcase.
Background
The flywheel end and the starting end of the crankcase of the existing mower are respectively connected through bolts after being processed, the connection surface is easy to have a dislocation phenomenon, and the concentricity of the bearing hole and the flatness of the flange surface perpendicular to the connection surface are poor. And then there is bad clearance after crankcase and cylinder, bent axle etc. assemble, and the sealed not enough easily causes bad phenomenon such as oil leakage, gas leakage, fuel combustion insufficiency, and the use power is not enough increases energy loss, causes the atmospheric pollution and greatly reduced the life of product.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the connecting structure of the flywheel end and the starting end of the mower crankcase, which can improve the concentricity of the bearing hole of the crankcase and the flatness of the flange surface, enhance the sealing performance of the assembled crankcase and various accessories, and improve the service function and the service life of a product.
The utility model relates to a connecting structure of a flywheel end and a starting end of a mower crankcase, which adopts the following technical scheme: the crank shaft comprises a flywheel end and a starting end of a crank shaft, wherein a connecting surface of the flywheel end is provided with a plurality of first pin holes, and a connecting surface of the starting end is provided with a plurality of second pin holes corresponding to the first pin holes; and the first pin hole and the second pin hole are connected through a positioning pin and then a bearing hole of the crankcase is processed.
Further, the flywheel end, the starting end and the cylinder assembling surface are processed after the pin hole I and the pin hole II are connected through the positioning pin.
Further, the positioning pin is a split spring pin.
Furthermore, the number of the first pin holes and the number of the second pin holes are three respectively and are distributed in trisection.
Furthermore, the first pin hole and the second pin hole are arranged close to the bolt holes at the flywheel end and the starting end.
Furthermore, the first pin hole on the flywheel end is integrally formed when the flywheel end blank is cast.
Further, the second pin hole in the starting end is integrally formed when the starting end blank is cast.
Compared with the prior art, the utility model has the beneficial effects that: the flywheel end and the starting end are connected by a positioning pin, and a bearing hole of the flywheel end and a bearing hole of the starting end are simultaneously machined after connection, so that the coaxiality of the bearing holes at the two ends is ensured; after the flywheel end, the starting end and the cylinder assembling surface are connected, the flatness of the assembling surface is ensured; the processing of processing face has increased the leakproofness after the assembly of crankcase with cylinder, bent axle etc. after connecting, has strengthened product service function greatly, has promoted the life of product.
Drawings
The accompanying drawings, which are described herein to provide a further understanding of the application, are included in the following description:
FIG. 1 is a view of a connecting surface structure of a flywheel end of the present invention;
FIG. 2 is a view showing a configuration of a connection surface of the starting end of the present invention;
FIG. 3 is a cross-sectional view of the flywheel end and start end connection structure of the present invention.
Detailed Description
Referring to fig. 1-3, the connecting structure of the flywheel end and the starting end of the mower crankcase of the embodiment includes a flywheel end 2 and a starting end 1 of the crankcase, a connecting surface of the flywheel end 2 is provided with a plurality of pin holes one 21, and a connecting surface of the starting end 1 is provided with a plurality of pin holes two 11 corresponding to the pin holes one 21; and the first pin hole 21 and the second pin hole 11 are connected through the positioning pin 3, and then bearing holes 13 and 23 of the crankcase are machined.
Further, the flywheel end 2, the starting end 1 and the cylinder assembling surface are processed after the pin hole I21 and the pin hole II 11 are connected through the positioning pin 3.
Further, the positioning pin is a split spring pin.
Further, the number of the first pin holes 21 and the number of the second pin holes 11 are three respectively and are distributed in trisection.
Further, the first pin hole 21 and the second pin hole 11 are arranged next to the bolt holes 22 and 12 at the flywheel end 2 and the starting end 1.
Further, the pin hole I21 on the flywheel end 2 is integrally formed when the flywheel end blank is cast.
Further, the second pin hole 11 on the starting end 1 is integrally formed when a starting end blank is cast.
The working principle of the utility model is as follows:
the flywheel end 2 and the starting end 1 are directly pressed into the connecting surface of the flywheel end 2 and the starting end 1 through a press machine for split spring pins, and a flywheel end bearing hole 13 and a starting end bearing hole 23 are simultaneously machined after connection, so that the coaxiality of the flywheel end bearing hole 13 and the starting end bearing hole 23 is ensured; after the flywheel end 1 and the starting end 2 are connected, the assembling surface of the cylinder is machined, and the flatness of the assembling surface is ensured. The processing of processing face has increased the leakproofness after the assembly of crankcase with cylinder, bent axle etc. after connecting, has strengthened product service function greatly, has promoted the life of product.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a connection structure of flywheel end and start-up end of lawn mower crankcase, its flywheel end and the start-up end that includes the crankcase, its characterized in that: the connecting surface of the flywheel end is provided with a plurality of first pin holes, and the connecting surface of the starting end is provided with a plurality of second pin holes corresponding to the first pin holes; the flywheel end is connected with the starting end through a positioning pin, and two ends of the positioning pin are respectively arranged in the first pin hole and the second pin hole.
2. The connecting structure of the flywheel end and the starting end of the crankcase of the mower according to claim 1, wherein: the positioning pin is a split spring pin.
3. The connecting structure of the flywheel end and the starting end of the crankcase of the mower according to claim 1, wherein: the number of the first pin holes and the number of the second pin holes are three respectively and are distributed in trisection.
4. The connecting structure of the flywheel end and the starting end of the crankcase of the mower according to claim 1, wherein: the first pin hole and the second pin hole are arranged close to the bolt holes at the flywheel end and the starting end.
5. The connecting structure of the flywheel end and the starting end of the crankcase of the mower according to claim 1, wherein: and the first pin hole on the flywheel end is integrally formed when the flywheel end blank is cast.
6. The connecting structure of the flywheel end and the starting end of the crankcase of the mower according to claim 1, wherein: and the second pin hole on the starting end is integrally formed when the starting end blank is cast.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122539155.0U CN216344725U (en) | 2021-10-21 | 2021-10-21 | Connecting structure of flywheel end and starting end of mower crankcase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122539155.0U CN216344725U (en) | 2021-10-21 | 2021-10-21 | Connecting structure of flywheel end and starting end of mower crankcase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216344725U true CN216344725U (en) | 2022-04-19 |
Family
ID=81178872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122539155.0U Active CN216344725U (en) | 2021-10-21 | 2021-10-21 | Connecting structure of flywheel end and starting end of mower crankcase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216344725U (en) |
-
2021
- 2021-10-21 CN CN202122539155.0U patent/CN216344725U/en active Active
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