CN216044960U - Crankshaft connecting rod with large oil groove structure - Google Patents
Crankshaft connecting rod with large oil groove structure Download PDFInfo
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- CN216044960U CN216044960U CN202122425659.XU CN202122425659U CN216044960U CN 216044960 U CN216044960 U CN 216044960U CN 202122425659 U CN202122425659 U CN 202122425659U CN 216044960 U CN216044960 U CN 216044960U
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- oil groove
- connecting rod
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- hole
- groove structure
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Abstract
The utility model discloses a crankshaft connecting rod with a large oil groove structure, which comprises a rod body, wherein one end of the rod body is provided with a large-end needle roller bearing hole, the other end of the rod body is provided with a small-end piston pin hole, the hole wall of the large-end needle roller bearing hole is provided with an arc-shaped large-end oil groove which is symmetrically arranged, and the small-end piston pin hole is provided with a small-end oil groove. The big end oil groove of the big end needle bearing hole of the crankshaft connecting rod with the big oil groove structure enlarges the oil through contact surface in the bearing operation process, the symmetrical design is uniform and lubricating, the operation performance of the lifting connecting rod and the crankshaft is stable, and the service life of the bearing is prolonged. The small-end oil groove of the small-end piston pin hole has sufficient oil passing area, and the operating performance of the connecting rod piston in a heavy oil pollution environment is stable.
Description
Technical Field
The utility model relates to a connecting rod, in particular to a crankshaft connecting rod with a large oil groove structure.
Background
The connecting rod is a common part of the crankshaft of the engine, and connects the piston and the crankshaft, so that the reciprocating linear motion of the piston is changed into the rotary motion of the crank to output power. The crankshaft is generally composed of a small end connected with a piston, a large end connected with a crankshaft and a rod body connected with the large end and the small end. In order to improve wear resistance and increase lubrication, usually, drill holes are additionally arranged on the large end wall and the small end wall so as to facilitate oil lubrication and prolong service life, so that motion transformation and power transmission are realized, when the oil hole type connecting rod exists in a heavy load or heavy oil pollution environment, the lubricating effect of the oil hole type connecting rod is far insufficient, and even the problems of bearing locking or bush burning failure caused by insufficient lubrication can occur.
SUMMERY OF THE UTILITY MODEL
The utility model mainly solves the technical problems in the prior art, and provides the crankshaft connecting rod with the large oil groove structure.
The technical problem of the utility model is mainly solved by the following technical scheme:
the crankshaft connecting rod with the large oil groove structure is characterized by comprising a rod body, wherein a large-end needle roller bearing hole is formed in one end of the rod body, a small-end piston pin hole is formed in the other end of the rod body, arc-shaped large-end oil grooves which are symmetrically arranged are formed in the hole wall of the large-end needle roller bearing hole, and a small-end oil groove is formed in the small-end piston pin hole.
As a preferred embodiment of the utility model, the small end oil groove is arranged along the extension direction of the shaft.
As a preferred embodiment of the present invention, the center distance of the big-end oil groove is greater than twice the diameter of the big-end needle roller bearing hole.
As a preferred embodiment of the utility model, the highest point of the small end oil groove does not exceed the central point of the small end piston pin hole.
The crankshaft connecting rod with the large oil groove structure has the following advantages: the big end oil groove of the big end needle bearing hole of the crankshaft connecting rod with the big oil groove structure enlarges the oil through contact surface in the bearing operation process, the symmetrical design is uniform and lubricating, the operation performance of the lifting connecting rod and the crankshaft is stable, and the service life of the bearing is prolonged. The small-end oil groove of the small-end piston pin hole has sufficient oil passing area, and the operating performance of the connecting rod piston in a heavy oil pollution environment is stable.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a crankshaft connecting rod with a large oil sump structure according to the present invention;
FIG. 2 is a schematic view of the crankshaft connecting rod with the large oil sump structure of FIG. 1, from another perspective;
FIG. 3 is a further schematic illustration of the crankshaft connecting rod of FIG. 2.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention will be more clearly and clearly defined.
As shown in fig. 1 and 3, the crankshaft connecting rod with a large oil groove structure comprises a rod body 3, one end of the rod body 3 is provided with a large end needle bearing hole 2, the other end of the rod body 3 is provided with a small end piston pin hole 4, the hole wall of the large end needle bearing hole 2 is provided with an arc-shaped large end oil groove 5 which is symmetrically arranged, and the small end piston pin hole 4 is provided with a small end oil groove 7.
The small end oil groove 7 is provided along the extension direction of the shaft 3.
The center distance P of the large-end oil groove 5 is greater than twice the aperture of the large-end needle bearing hole 2.
The highest point Q of the small end oil groove 7 does not exceed the central point O of the small end piston pin hole 4.
The big end oil groove 5 of the big end needle bearing hole 2 of the crankshaft connecting rod with the big oil groove structure enlarges the oil-passing contact surface in the bearing operation process, is symmetrical and uniformly lubricated, and has stable operation performance of the lifting connecting rod and the crankshaft and prolonged service life of the bearing. The oil passing area of the small-end oil groove 7 of the small-end piston pin hole is sufficient, and the running performance of the connecting rod piston in a heavy oil pollution environment is stable.
Without being limited thereto, any changes or substitutions that are not thought of through the inventive work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (4)
1. The crankshaft connecting rod with the large oil groove structure is characterized by comprising a rod body (3), a large-end needle roller bearing hole (2) is formed in one end of the rod body (3), a small-end piston pin hole (4) is formed in the other end of the rod body (3), arc-shaped large-end oil grooves (5) symmetrically arranged are formed in the hole wall of the large-end needle roller bearing hole (2), and a small-end oil groove (7) is formed in the small-end piston pin hole (4).
2. The crankshaft connecting rod with a large oil groove structure according to claim 1, characterized in that the small end oil groove (7) is arranged along the extension direction of the rod body (3).
3. The crankshaft connecting rod with large oil groove structure according to claim 1, characterized in that the center distance (P) of the large end oil groove (5) is more than twice the bore diameter of the large end needle bearing hole (2).
4. The crankshaft connecting rod with large oil groove structure according to claim 3, characterized in that the highest point (Q) of the small end oil groove (7) does not exceed the center point (O) of the small end piston pin hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122425659.XU CN216044960U (en) | 2021-10-09 | 2021-10-09 | Crankshaft connecting rod with large oil groove structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122425659.XU CN216044960U (en) | 2021-10-09 | 2021-10-09 | Crankshaft connecting rod with large oil groove structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216044960U true CN216044960U (en) | 2022-03-15 |
Family
ID=80548138
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122425659.XU Active CN216044960U (en) | 2021-10-09 | 2021-10-09 | Crankshaft connecting rod with large oil groove structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216044960U (en) |
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2021
- 2021-10-09 CN CN202122425659.XU patent/CN216044960U/en active Active
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