CN219082063U - Connecting rod of engine - Google Patents
Connecting rod of engine Download PDFInfo
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- CN219082063U CN219082063U CN202223087052.6U CN202223087052U CN219082063U CN 219082063 U CN219082063 U CN 219082063U CN 202223087052 U CN202223087052 U CN 202223087052U CN 219082063 U CN219082063 U CN 219082063U
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- connecting rod
- engine
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- shoe
- tile
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Abstract
The application discloses an engine connecting rod belongs to the engine technology field, has solved the technical problem that connecting rod tile and bent axle root fillet position interfere. The engine connecting rod comprises a connecting rod big end, a connecting rod small end, a rod body and a connecting rod tile; the large connecting rod end and the small connecting rod end are respectively connected to the two ends of the rod body; and the connecting rod large end and the connecting rod small end are internally provided with connecting rod tiles, and the axial width of the connecting rod tiles arranged on the connecting rod large end is smaller than that of the connecting rod large end. According to the method, the axial width of the connecting rod bush and the axial width of the connecting rod big head are adjusted, so that the connecting rod bush and the connecting rod big head hole are combined, installed and positioned, the installation deviation of the axial distance range can be generated, and the interference problem of the connecting rod and the crank root fillet is solved.
Description
Technical Field
The application belongs to the technical field of engines, and particularly relates to an engine connecting rod structure.
Background
The connecting rod is one of the core components in the engine crank-connecting rod mechanism and functions to change the reciprocating motion of the piston into the rotational motion of the crankshaft. The big end is assembled and connected with a connecting rod neck of the crankshaft, a connecting rod big end hole is of a split type structure, the connecting rod big end is combined with a big end cover during assembly, an upper connecting rod tile and a lower connecting rod tile (for short, connecting rod tiles) are installed in an interference mode in the middle of the connecting rod big end, and the connecting rod upper and lower connecting rod tiles are connected through elastic bolts and screwed down according to the requirement of a specified moment.
Because the phenomenon that the axial positioning of the connecting rod bush and the connecting rod big end is inconsistent can occur in the working process of the engine, the connecting rod bush and the connecting rod big end can interfere with the position of the crank root fillet, and other faults are caused by further increasing the abrasion along with the lengthening of the working time of the engine.
Disclosure of Invention
The embodiment of the application provides an engine connecting rod structure, which solves the technical problem of interference between a connecting rod shoe and the root fillet position of a crankshaft.
The engine connecting rod provided by the embodiment of the application comprises a connecting rod big end, a connecting rod small end, a rod body and a connecting rod tile;
the large connecting rod head and the small connecting rod head are respectively connected to two ends of the rod body;
the connecting rod big end and the connecting rod small end are internally provided with the connecting rod tile, and the axial width of the connecting rod tile arranged on the connecting rod big end is smaller than that of the connecting rod big end.
Further, the axial width of the connecting rod shoe mounted on the connecting rod big head is smaller than 2.55 mm.
Further, the outer diameter of the connecting rod shoe gradually decreases from the middle part of the connecting rod shoe to the direction of the edge of the connecting rod shoe.
Further, the connecting rod shoe for installing the connecting rod big end is in interference fit with the connecting rod big end.
Further, from the small end of the connecting rod to the large end of the connecting rod, the axial width of the large end of the connecting rod is gradually reduced. Further, the connecting rod big head comprises a connecting rod seat connected with the rod body and a connecting rod cover connected with the connecting rod seat;
the two sides of the connecting rod cover are provided with bolt seats, the positions of the connecting rod cover corresponding to the bolt seats are provided with screw holes, and the connecting rod cover is connected with the connecting rod seats through bolts.
Further, the cross section of the rod body is in an H shape or an I shape.
The embodiment of the application provides an engine connecting rod, through the axial width of adjustment connecting rod tile and connecting rod big end for connecting rod tile and connecting rod big end hole combination installation location benchmark can produce the installation deviation of axial distance scope, thereby solves the interference problem of connecting rod and crank root fillet. And the engine connecting rod is assembled to the engine to carry out bench assessment test, after the bench assessment test is carried out, the abnormal abrasion problem of the positions of the connecting rod shoe and the crankshaft R2.5 fillet is not generated, and the occurrence of faults is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the embodiments of the present utility model or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a cross-sectional view of an engine connecting rod provided by an embodiment of the present application;
fig. 2 is a schematic view of a connecting rod shoe structure of an engine connecting rod according to an embodiment of the present application.
Reference numerals: 1-a connecting rod big end; 2-connecting rod small end; 3-a rod body; 4-connecting rod shoe.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the embodiments of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the embodiments of the present utility model and simplify description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.
In this specification, each embodiment is described in a progressive manner, and the same or similar parts of each embodiment are referred to each other, and each embodiment is mainly described as a difference from other embodiments.
As shown in fig. 1 and 2, the present application provides an engine connecting rod comprising a connecting rod big end 1, a connecting rod small end 2, a rod body 3 and a connecting rod shoe 4. The large connecting rod head 1 and the small connecting rod head 2 are respectively connected to two ends of the rod body 3, connecting rod tiles 4 are arranged in the large connecting rod head 1 and the small connecting rod head 2, and the axial width of the connecting rod tiles 4 arranged on the large connecting rod head 1 is smaller than that of the large connecting rod head 1.
Specifically, the large connecting rod head 1 and the small connecting rod head 2 are respectively positioned in two directions of the rod body 3, the large connecting rod head 1 is used for connecting a crankshaft, and the small connecting rod head 2 is used for connecting a piston. In the process of connecting by using an engine, in order to reduce the abrasion to the connecting rod head and improve the stability of the engine connecting rod, the connecting rod big end 1 and the connecting rod small end 2 are internally provided with the connecting rod shoe 4, and the abrasion to the connecting rod during the movement of the connecting rod mechanism is replaced by the abrasion to the connecting rod shoe 4, so that the durability of the connecting rod is improved.
The embodiment of the application is different from the connection of the existing engine, the axial width 4 of the connecting rod tile 4 arranged on the connecting rod big head 1 is smaller than the axial width of the connecting rod big head 1, and the technical problem that the connecting rod big head 1 commonly existing in the engine can interfere with the position of the crank root fillet can be solved by adopting the structure.
It should be noted that, the crank shaft matched with the engine connecting rod provided by the embodiment of the application adopts a rolling fillet process at the crank root, and the crank root of the crank shaft adopts an R2.5 fillet process. The installation deviation of the axial distance range of 2.55 can be generated by the combined installation positioning reference of the connecting rod bush 4 and the connecting rod big head 1, the phenomenon of inconsistent axial positioning of the connecting rod bush 4 and the connecting rod big head 1 can occur in the working process of the engine, the interference can be generated with the position of the round angle R2.5 of the crank root, and other faults are caused by further aggravated abrasion along with the lengthening of the working time of the engine. Therefore, when the connecting rod tile 4 is assembled and installed, the joint between the edge of the connecting rod tile 4 and the chamfer edge of the connecting rod big head 1 must be strictly controlled, and the positioning reference is ensured by the skill level of an assembler. The embodiment of the present application specifically adopts the following structure for the above case.
With continued reference to FIG. 1, the axial width of the connecting rod shoe 4 mounted to the connecting rod big head 1 is less than the axial width of the connecting rod big head 1, and in this embodiment, is specifically less than 2.55 mm.
Specifically, the original shape and size of the matching of the engine connecting rod big head 1 and the connecting rod shoe 4 are as follows: the diameter size of the hole of the connecting rod big head 1 is phi 75.9, the width size is 27, the chamfers of the two end holes are C1, the width size of the connecting rod tile 4 is 24.3, the minimum value of the width difference between the connecting rod big head 1 and the connecting rod tile 4 is 2.55, and the connecting rod tile 4 has an axial installation distance of 2.55 in the connecting rod big head 1.
As shown in fig. 1, the outer diameter of the connecting rod shoe 4 gradually decreases from the middle of the connecting rod shoe 4 toward the edge of the connecting rod shoe 4, i.e., the connecting rod shoe 4 is a curved surface structure with thin sides and thick middle, and the connecting rod shoe 4 is divided into an upper connecting rod shoe and a lower connecting rod shoe.
In the installation process, the connecting rod shoe 4 installed at the connecting rod big head 1 is in interference fit with the connecting rod big head 1. The outer diameter of the connecting rod tile 4 is larger than the inner diameter of the connecting rod, the wall thickness of the connecting rod tile 4 at the two ends is gradually reduced by 0.003-0.015 relative to the center, one end of the connecting rod tile 4 is higher than the center by 0.08-0.12 when the diameter of phi 75.928 is measured for 4500N times, and after the connecting rod tile and the connecting rod big end 1 cover are assembled, the higher part of the material can be extruded and deformed by the pressing force to be assembled with the connecting rod big end 1 in an interference mode.
In addition, in the direction in which the large link head 1 points to the small link head 2, the axial width of the large link head 1 gradually decreases.
As shown in fig. 1, the connecting rod big head 1 includes a connecting rod seat connected with the rod body 3, and a connecting rod cover connected with the connecting rod seat. The two sides of the connecting rod cover are provided with bolt seats, the positions of the connecting rod cover corresponding to the bolt seats are provided with screw holes, and the connecting rod cover is connected with the bolt seats through bolts. The cross section of the rod body 3 is in an H shape or an I shape.
According to the embodiment of the application, the axial width of the connecting rod bush and the axial width of the connecting rod big head are adjusted, so that the connecting rod bush and the connecting rod big head hole are combined, installed and positioned, and the installation deviation of the axial distance range can be generated, so that the interference problem of the connecting rod and the crank root fillet is solved. And the engine connecting rod is assembled to the engine to carry out bench assessment test, after the bench assessment test is carried out, the abnormal abrasion problem of the positions of the connecting rod shoe and the crankshaft R2.5 fillet is not generated, and the occurrence of faults is reduced.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the present application; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions.
Claims (7)
1. The engine connecting rod is characterized by comprising a connecting rod big end (1), a connecting rod small end (2), a rod body (3) and a connecting rod tile (4);
the connecting rod big end (1) and the connecting rod small end (2) are respectively connected to two ends of the rod body (3);
the connecting rod big end (1) and the connecting rod small end (2) are internally provided with the connecting rod tile (4), and the axial width of the connecting rod tile (4) arranged on the connecting rod big end (1) is smaller than that of the connecting rod big end (1).
2. The engine connecting rod according to claim 1, characterized in that the axial width of the connecting rod shoe (4) mounted to the connecting rod big end (1) is smaller than the axial width of the connecting rod big end (1) by 2.55 mm.
3. The engine connecting rod according to claim 1, characterized in that the outside diameter of the connecting rod shoe (4) decreases gradually from the middle of the connecting rod shoe (4) in the direction of the edge of the connecting rod shoe (4).
4. The engine connecting rod according to claim 1, characterized in that the connecting rod shoe (4) mounting the connecting rod big end (1) is in interference fit with the connecting rod big end (1).
5. The engine connecting rod according to claim 1, characterized in that the axial width of the connecting rod big end (1) gradually decreases from the connecting rod small end (2) to the direction of the connecting rod big end (1).
6. The engine connecting rod according to claim 1, characterized in that the connecting rod big end (1) comprises a connecting rod seat connected with the rod body (3) and a connecting rod cover connected with the connecting rod seat;
the two sides of the connecting rod cover are provided with bolt seats, the positions of the connecting rod cover corresponding to the bolt seats are provided with screw holes, and the connecting rod cover is connected with the connecting rod seats through bolts.
7. The engine connecting rod according to claim 1, characterized in that the cross section of the rod body (3) is "i" or "H" shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087052.6U CN219082063U (en) | 2022-11-17 | 2022-11-17 | Connecting rod of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223087052.6U CN219082063U (en) | 2022-11-17 | 2022-11-17 | Connecting rod of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219082063U true CN219082063U (en) | 2023-05-26 |
Family
ID=86423565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223087052.6U Active CN219082063U (en) | 2022-11-17 | 2022-11-17 | Connecting rod of engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219082063U (en) |
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2022
- 2022-11-17 CN CN202223087052.6U patent/CN219082063U/en active Active
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