CN215521594U - Wear-resistant crankshaft - Google Patents
Wear-resistant crankshaft Download PDFInfo
- Publication number
- CN215521594U CN215521594U CN202120711029.6U CN202120711029U CN215521594U CN 215521594 U CN215521594 U CN 215521594U CN 202120711029 U CN202120711029 U CN 202120711029U CN 215521594 U CN215521594 U CN 215521594U
- Authority
- CN
- China
- Prior art keywords
- crankshaft
- flat key
- bolt hole
- guide piece
- limiting
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 abstract description 7
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model discloses a wear-resistant crankshaft which comprises a crankshaft body, a first bolt hole and a second bolt hole, wherein the first bolt hole is formed in the crankshaft body; the guide piece is provided with a second bolt hole and is fixedly connected with the crankshaft body through a bolt; the outer connecting piece is arranged on the outer side of the connecting position of the crankshaft body and the guide piece; the guide piece and the outer connecting piece are fixedly connected through a flat key, a first flat key groove is formed in the guide piece, a second flat key groove is formed in the outer connecting piece, the first flat key groove is communicated with the second bolt hole, and the limiting structure is used for limiting the flat key part to enter the second bolt hole. Aiming at the technical problem that the existing crankshaft is worn in the using process and needs to be integrally replaced after being collided, the utility model provides the wear-resistant crankshaft which is provided with the replaceable guide piece and the replaceable outer connecting piece to realize partial replacement and is convenient for the quick replacement of the worn guide piece and the worn outer connecting piece.
Description
Technical Field
The utility model relates to the technical field of crankshafts, in particular to a wear-resistant crankshaft.
Background
The crankshaft is the main rotating part of the engine, and after the connecting rod is arranged, the crankshaft can bear the up-and-down reciprocating motion of the connecting rod to be changed into the circulating rotation motion. It takes the force from the connecting rod and converts it into torque to be output by the crankshaft and drive other accessories on the engine. The crankshaft is subjected to the combined action of centrifugal force of the rotating mass, gas inertia force of periodic variation and reciprocating inertia force, so that the crankshaft is subjected to the action of bending and twisting load. Therefore, the crankshaft is required to have sufficient strength and rigidity, and the surface of the journal needs to be wear-resistant, work uniformly and balance well.
To the simpler bent axle of structure on the existing market, the processing that part was realized to the processing method that adopts integrated into one piece mostly, the bent axle appear wearing and tearing in the use with collide with the back, in order not to influence the normal work of equipment, its part is mostly all by whole change, leads to use cost to uprise.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
Aiming at the technical problem that the existing crankshaft is worn in the using process and needs to be integrally replaced after being collided, the utility model provides the wear-resistant crankshaft which is provided with the replaceable guide piece and the replaceable outer connecting piece to realize partial replacement and is convenient for the quick replacement of the worn guide piece and the worn outer connecting piece.
2. Technical scheme
In order to solve the problems, the technical scheme provided by the utility model is as follows:
a wear resistant crankshaft comprising a crankshaft body having a first bolt hole; the guide piece is provided with a second bolt hole and is fixedly connected with the crankshaft body through a bolt; the outer connecting piece is arranged on the outer side of the connecting position of the crankshaft body and the guide piece; the guide piece and the outer connecting piece are fixedly connected through a flat key, a first flat key groove is formed in the guide piece, a second flat key groove is formed in the outer connecting piece, the first flat key groove is communicated with the second bolt hole, and the limiting structure is used for limiting the flat key part to enter the second bolt hole.
Optionally, the limiting structure comprises a limiting protrusion arranged at the edge of the flat key and a limiting groove arranged on the inner wall of the first flat key groove, and the limiting protrusion can move in the limiting groove along the radial direction of the guide piece.
Optionally, a spring is arranged in the limiting groove, and the spring drives the limiting protrusion to move towards the direction of the second bolt hole.
Optionally, the outer end of one side of the flat key, which is in contact with the bolt, is provided with a guide inclined surface.
Optionally, the crankshaft body and the guide cooperate through a locating structure.
Optionally, the positioning structure includes a positioning protrusion disposed at an end of the guiding member, and a positioning groove disposed at an end of the crankshaft body and engaged with the positioning protrusion.
Optionally, a flexible layer is arranged on one side of the flat key, which is in contact with the bolt.
Optionally, the flat key is provided with two or more.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) when the wear-resistant crankshaft is assembled, in the process of screwing in the bolt, the bolt pushes out the flat key to enable the outer end of the flat key to enter the second flat key groove to realize clamping, thereby not only realizing the connection of the guide piece of the crankshaft body, but also realizing the connection of the guide piece and the outer connecting piece, thereby being convenient for the quick replacement of the guide piece and the outer connecting piece after being worn,
drawings
FIG. 1 is a schematic view of a wear resistant crankshaft according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a wear-resistant crankshaft according to an embodiment of the present invention.
1. A crankshaft body; 1a, a first bolt hole; 2. a guide member; 2a, a second bolt hole; 3. an outer connecting member; 4. a bolt; 5. a flat bond; 6. a first flat key groove; 7. a second flat keyway; 8. a limiting bulge; 9. a limiting groove; 10. a spring; 11. a guide slope; 12. positioning the projection; 13. and (6) positioning a groove.
Detailed Description
For a further understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings 1-2.
With reference to fig. 1 and 2, the wear-resistant crankshaft of the present embodiment includes a crankshaft body 1, and a first bolt hole 1a is formed at an end axis of the crankshaft body 1; a second bolt hole 2a is formed in the axis of the guide part 2 in a penetrating mode, and the guide part 2 is fixedly connected with the crankshaft body 1 through a bolt 4; the outer connecting piece 3 is arranged on the outer side of the connecting position of the crankshaft body 1 and the guide piece 2, and the inner wall of the outer connecting piece 3 is attached to the outer walls of the crankshaft body 1 and the guide piece 2 so as to improve the connecting stability of the crankshaft body 1 and the guide piece 2; the guide piece 2 is fixedly connected with the outer connecting piece 3 through a flat key 5, a first flat key groove 6 is formed in the guide piece 2, a second flat key groove 7 is formed in the outer connecting piece 3, the first flat key groove 6 is communicated with the second bolt hole 2a, and the limiting structure is used for limiting a part of the flat key 5 from entering the second bolt hole 2 a; this wear-resisting bent axle is when the equipment, at the in-process of screw in bolt 4, bolt 4 outwards ejecting so that its outer end gets into the second flat keyway 7 realize the card with, both realized the connection of bent axle body 1 and guide 2, the connection of guide 2 and external connection piece 3 has been realized again simultaneously, thereby be convenient for wearing and tearing back guide 2 and external connection piece 3 quick replacement, and meanwhile, through above-mentioned structural design, make the size of first flat keyway 6 and second flat keyway 7 can design into the size unanimous with flat key 5, the both ends of flat key 5 imbed respectively in first flat keyway 6 and the second flat keyway 7 and can realize stable connection, and traditional flat keyway needs to design into longer size along the installation direction of external connection piece 3, cause the vibration in the use can't obtain effectual suppression.
As an alternative of the present invention, the limiting structure includes a limiting protrusion 8 disposed at an edge of the flat key 5 and a limiting groove 9 disposed on an inner wall of the first flat key groove 7, the limiting protrusion 8 is disposed on each of two sides of the flat key 5, the limiting protrusion 8 can move in the limiting groove 9 along a radial direction of the guide member 2, and the limiting protrusion 8 and the limiting groove 9 cooperate to prevent the flat key 5 from falling into the second bolt hole 2a as a whole, and simultaneously prevent the limiting protrusion 8 from entering the second bolt hole 2a too deeply to collide with the bolt 4.
As an alternative of the present invention, a spring 10 is disposed in the limiting groove 9, and an elastic acting force generated by the spring 10 drives the limiting protrusion 8 to move toward the second bolt hole 2a, so that in the process of sleeving the outer connecting member 3, the outer end of the flat key 5 can be hidden in the first flat key groove 6 to avoid the outer connecting member 3 from being installed unsuccessfully due to collision with the outer connecting member 3.
As an alternative of the present invention, the outer end of the flat key 5 on the side contacting with the bolt 4 is provided with a guide inclined plane 11, and at the initial stage of screwing in the bolt 4, the bolt 4 can smoothly push up the flat key 5 through the guide inclined plane 11, so that the process of screwing in the bolt 4 is more labor-saving.
As an alternative of the present invention, the crankshaft body 1 and the guide 2 are matched through a positioning structure, the positioning structure includes a positioning protrusion 12 disposed at an end of the guide 2, and a positioning groove 13 disposed at an end of the crankshaft body 1 and matched with the positioning protrusion 12, when assembling, the positioning protrusion 12 is clamped into the positioning groove 13 to realize pre-positioning of the crankshaft body 1 and the guide 2, so that the first bolt hole 1a and the second bolt hole 2a are in the same straight line to facilitate the bolt 4 to be screwed in.
As an alternative of the present invention, in order to prevent the thread on the bolt 4 from being worn during the process of ejecting the bolt 4 out of the flat key 5, a flexible layer is provided on the side of the flat key 5 contacting with the bolt 4, and the flexible layer also has a certain deformation capability so that the flat key 5 fits more inside the first flat key groove 6 and the second flat key groove 7.
As an alternative of the present invention, in order to improve the coupling strength of the guide 2 and the outer connecting member 3, the flat key 5 is provided with two or more.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.
Claims (8)
1. A wear-resistant crankshaft characterized by: comprises that
A crankshaft body having a first bolt hole;
the guide piece is provided with a second bolt hole and is fixedly connected with the crankshaft body through a bolt;
the outer connecting piece is arranged on the outer side of the connecting position of the crankshaft body and the guide piece;
the guide piece and the outer connecting piece are fixedly connected through a flat key, a first flat key groove is formed in the guide piece, a second flat key groove is formed in the outer connecting piece, the first flat key groove is communicated with the second bolt hole, and the limiting structure is used for limiting the flat key part to enter the second bolt hole.
2. A wear resistant crankshaft as claimed in claim 1, wherein: the limiting structure comprises a limiting protrusion arranged at the edge of the flat key and a limiting groove arranged on the inner wall of the first flat key groove, and the limiting protrusion can move in the limiting groove along the radial direction of the guide piece.
3. A wear resistant crankshaft as claimed in claim 2, wherein: the limiting groove is internally provided with a spring, and the spring drives the limiting protrusion to move towards the direction of the second bolt hole.
4. A wear resistant crankshaft as claimed in claim 1, wherein: and a guide inclined plane is arranged at the outer end of one side of the flat key, which is in contact with the bolt.
5. A wear resistant crankshaft as claimed in claim 1, wherein: the crankshaft body is matched with the guide piece through a positioning structure.
6. A wear resistant crankshaft as claimed in claim 5, wherein: the positioning structure comprises a positioning bulge arranged at the end part of the guide piece and a positioning groove arranged at the end part of the crankshaft body and matched with the positioning bulge.
7. A wear resistant crankshaft as claimed in claim 1, wherein: and a flexible layer is arranged on one side of the flat key, which is in contact with the bolt.
8. A wear resistant crankshaft as claimed in claim 1, wherein: the flat keys are provided with two or more than two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711029.6U CN215521594U (en) | 2021-04-07 | 2021-04-07 | Wear-resistant crankshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120711029.6U CN215521594U (en) | 2021-04-07 | 2021-04-07 | Wear-resistant crankshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215521594U true CN215521594U (en) | 2022-01-14 |
Family
ID=79801646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120711029.6U Expired - Fee Related CN215521594U (en) | 2021-04-07 | 2021-04-07 | Wear-resistant crankshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215521594U (en) |
-
2021
- 2021-04-07 CN CN202120711029.6U patent/CN215521594U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220114 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |