CN112268061A - Lubricating connecting rod for engine - Google Patents
Lubricating connecting rod for engine Download PDFInfo
- Publication number
- CN112268061A CN112268061A CN202011121762.9A CN202011121762A CN112268061A CN 112268061 A CN112268061 A CN 112268061A CN 202011121762 A CN202011121762 A CN 202011121762A CN 112268061 A CN112268061 A CN 112268061A
- Authority
- CN
- China
- Prior art keywords
- connecting rod
- oil
- groove
- logical
- lubricating
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
- F16C7/02—Constructions of connecting-rods with constant length
- F16C7/023—Constructions of connecting-rods with constant length for piston engines, pumps or the like
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N1/00—Constructional modifications of parts of machines or apparatus for the purpose of lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
Abstract
The invention relates to a lubricating connecting rod for an engine, which comprises a connecting rod body, a small connecting rod head arranged at one end of the connecting rod body, a large connecting rod head arranged at the other end of the connecting rod body, a connecting rod cover detachably connected with the large connecting rod head and a connecting rod bolt for connecting the large connecting rod head and the connecting rod cover, wherein a connecting rod bearing bush is arranged between the large connecting rod head and the connecting rod cover, a first oil through groove is arranged on the inner wall of the large connecting rod head, a second oil through groove is arranged on the inner wall of the connecting rod cover, and an oil through hole is arranged in the. This lubricating connecting rod for engine can carry out lubricating oil intercommunication through spiral helicine oil through hole between connecting rod major part and the connecting rod tip, can carry out lubricating oil through multiple route and supply, prevents to appear lubricating oil fault on connecting rod axle bush and the bush, can effectually prevent the condition of parts damage such as axle bush, spiral helicine oil through hole also can effectually cool down lubricating oil wherein in the connecting rod simultaneously for whole connecting rod is more stable in the course of the work.
Description
Technical Field
The invention belongs to the technical field of engine manufacturing, and particularly relates to a lubricating connecting rod for an engine.
Background
The crank connecting rod mechanism is a main moving part for realizing the working cycle of the engine and finishing energy conversion. It comprises a machine body, a piston connecting rod,
A main shaft, a connecting rod bush, a crankshaft flywheel and the like. In the power stroke, the piston bears the gas pressure to do linear motion in the cylinder, the linear motion is converted into the rotary motion of the crankshaft through the connecting rod, the power is output from the crankshaft, and the bearing bush finally bears the maximum load. The flywheel releases energy during the intake, compression, and exhaust strokes, which in turn translates the rotational motion of the crankshaft into linear motion of the piston.
The piston connecting rod group consists of a piston, a piston ring, a piston pin, a connecting rod bearing bush and the like, and when the connecting rod works, the connecting rod bears the action of gas pressure and inertia force at the top of the piston, and the magnitude and the direction of the force are periodically changed. As a result, the connecting rods are subjected to alternating loads, such as compression, tension and bending. This requires a connecting rod with high strength, high rigidity and light weight. The connecting rod is generally formed by die forging or roll forging of medium carbon steel or alloy steel, and then is machined and thermally treated, and the connecting rod is divided into three parts: namely a small connecting rod head, a connecting rod body and a large connecting rod head (comprising a connecting rod cover).
The existing connecting rod body is solid, so that lubricating oil in a small end of the connecting rod and lubricating oil in a large end of the connecting rod cannot be communicated and utilized, when an engine runs, some lubricating oil can be splashed at the small end of the connecting rod, the lubricating oil at the small end cannot be discharged and transferred to a large end of the connecting rod to be used by a bearing bush in the large end of the connecting rod once the lubricating oil at the small end is used enough, and once the lubricating oil at the bearing bush has a problem, the bearing bush is easily abraded and locked or damaged.
Disclosure of Invention
The invention aims to solve the problems and provide a lubricating connecting rod for an engine, which has a simple structure and reasonable design.
The invention realizes the purpose through the following technical scheme:
the utility model provides a lubricating connecting rod for engine, includes the connecting rod body of rod, locates the connecting rod microcephaly of connecting rod body of rod one end, locates the connecting rod major part of the connecting rod body of rod other end, with the detachable connecting rod cap of being connected of connecting rod major part and the connecting rod bolt of connecting rod major part and connecting rod cap, be equipped with the connecting rod axle bush between connecting rod major part and the connecting rod cap, be equipped with first logical oil groove on the inner wall of connecting rod major part, be equipped with the second oil groove on the inner wall of connecting rod cap, be equipped with the logical oilhole in the connecting rod body of rod, the one end and the connecting rod microcephaly intercommunication of logical oilhole, the other end and the first oil groove intercommunication that lead to the oilhole, the logical oilhole is the heliciform through-hole, be equipped with a plurality of oil grooves.
As a further optimization scheme of the invention, the connecting rod bearing shell comprises a first bearing shell arranged in the big end of the connecting rod and a second bearing shell arranged in the connecting rod cover, and a plurality of oil holes are formed in the first bearing shell and the second bearing shell.
The outer walls of the first half bearing bush and the second half bearing bush are provided with a plurality of positioning convex keys, the inner wall of the big end of the connecting rod and the inner wall of the connecting rod cover are provided with a plurality of positioning grooves matched with the positioning convex keys, and the positioning grooves are symmetrically distributed on two sides of the first oil through groove and the second oil through groove.
As a further optimized scheme of the present invention, the first oil through groove and the second oil through groove are communicated, inner surfaces of the first oil through groove and the second oil through groove are both smooth surfaces, and a plurality of oil storage grooves are arranged on an inner wall of the oil through hole.
As a further optimized scheme of the present invention, the first oil passing groove and the second oil passing groove are both semicircular grooves, and the radius of the first oil passing groove, the radius of the second oil passing groove and the radius of the oil hole are all the same.
As a further preferable aspect of the present invention, the oil hole of the first bearing half is communicated with the first oil passage groove, and the oil hole of the second bearing half is communicated with the second oil passage groove.
As a further optimized scheme of the invention, the inner surfaces of the first half bearing shell and the second half bearing shell are cast with wear-resistant alloy layers.
The invention has the beneficial effects that:
1) the spiral oil through hole is arranged in the connecting rod body, and the corresponding oil through grooves are arranged on the large end of the connecting rod and the inner wall of the small end of the connecting rod, so that lubricating oil in the small end of the connecting rod and lubricating oil in the large end of the connecting rod can be communicated and complemented;
2) according to the invention, the spiral oil through hole is arranged in the connecting rod body, the oil storage groove is arranged on the inner wall of the oil through hole, so that more lubricating oil can be stored, a certain amount of lubricating oil can be stored in the oil through hole in advance when the connecting rod is installed, and the lubricating oil can fully contact the inner wall of the oil through hole when circulating in the oil through hole, so that a certain cooling effect can be achieved, and the safety is higher;
3) the invention has simple structure, high stability, reasonable design and convenient realization.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the present invention;
FIG. 3 is a mating view of a first shoe half and a second shoe half of the present invention;
fig. 4 is a cross-sectional view of the present invention.
In the figure: 1. a connecting rod body; 101. a small end of the connecting rod; 102. a big end of the connecting rod; 103. an oil through hole; 104. a first oil through groove; 2. a connecting rod cover; 201. a second oil through groove; 3. a connecting rod bearing shell; 301. a first half shell; 302. a second half bearing shell; 303. positioning the convex key; 304. an oil hole; 4. a connecting rod bolt.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-4, a lubricating connecting rod for an engine comprises a connecting rod body 1, a connecting rod small end 101 arranged at one end of the connecting rod body 1, the connecting rod comprises a connecting rod body 1, a connecting rod big end 102 arranged at the other end of the connecting rod body 1, a connecting rod cover 2 detachably connected with the connecting rod big end 102 and a connecting rod bolt 4 connecting the connecting rod big end 102 and the connecting rod cover 2, a connecting rod bearing bush 3 is arranged between the connecting rod big end 102 and the connecting rod cover 2, a first oil through groove 104 is arranged on the inner wall of the connecting rod big end 102, a second oil through groove 201 is arranged on the inner wall of the connecting rod cover 2, an oil through hole 103 is arranged in the connecting rod body 1, one end of the oil through hole 103 is communicated with a connecting rod small end 101, the other end of the oil through hole 103 is communicated with the first oil through groove 104, the oil through hole 103 is a spiral through hole, a plurality of oil throwing grooves are arranged on the connecting rod;
the connecting rod bearing shell 3 comprises a first bearing half 301 arranged in the connecting rod big end 102 and a second bearing half 302 arranged in the connecting rod cover 2, a plurality of oil holes 304 are formed in the first bearing half 301 and the second bearing half 302, and the oil holes 304 are used for the circulation of lubricating oil and can supplement the lubricating oil on the surfaces of the first bearing half 301 and the second bearing half 302 so as to prevent the oil layer from breaking and the like;
the outer walls of the first half bearing shell 301 and the second half bearing shell 302 are provided with a plurality of positioning convex keys 303, the inner wall of the connecting rod big end 102 and the inner wall of the connecting rod cover 2 are both provided with a plurality of positioning grooves matched with the positioning convex keys 303, the positioning grooves are symmetrically distributed at two sides of the first oil through groove 104 and the second oil through groove 201, the first half bearing shell 301 and the second half bearing shell 302 are not semicircular under a free state, and when the first half bearing shell 301 and the second half bearing shell 302 are arranged in a hole of the connecting rod big end 102, the first half bearing shell and the second half bearing shell belong to interference assembly, so the first half bearing shell and the second half bearing shell can be uniformly attached to the wall of the big end, have good load bearing and heat conduction capabilities, can improve the working reliability and prolong the service;
the first oil through groove 104 is communicated with the second oil through groove 201, the inner surfaces of the first oil through groove 104 and the second oil through groove 201 are smooth surfaces, and the inner wall of the oil through hole 103 is provided with a plurality of oil storage grooves which can increase the oil storage quantity in the oil through hole 103 on one hand and can ensure that lubricating oil can be fully contacted with the inner wall of the oil through hole 103 when the lubricating oil flows in the oil through hole 103 on the other hand, so that a certain cooling effect can be achieved, and the influence on the connecting rod bearing bush 3 or the bush caused by overhigh temperature of the lubricating oil is prevented;
the first oil through groove 104 and the second oil through groove 201 are both semicircular grooves, and the radius of the first oil through groove 104, the radius of the second oil through groove 201 and the radius of the oil hole 304 are all the same; the oil hole 304 on the first bearing half 301 is communicated with the first oil through groove 104, the oil hole 304 on the second bearing half 302 is communicated with the second oil through groove 201, and lubricating oil can uniformly circulate in the connecting rod;
the inner surfaces of the first half bearing shell 301 and the second half bearing shell 302 are poured with wear-resistant alloy layers, the wear-resistant alloy layers can be made of copper-aluminum alloy, high-tin-aluminum alloy or Babbitt metal, and the wear-resistant alloy layers have the characteristics of being soft, easy to maintain an oil film, good in running-in performance, small in friction resistance, difficult to wear and the like, and are high in safety;
lubricating oil splashed to the small connecting rod head 101 during the operation of an engine can be received by the oil splashing grooves and flows into the third oil passing groove from the oil splashing grooves, the third oil passing groove and the bush are communicated, therefore, the bush can be lubricated by the lubricating oil firstly, redundant lubricating oil can flow into the spiral oil passing hole 103 from the third oil passing groove and is stored in the oil passing hole 103, the oil passing hole 103 is communicated with the first oil passing groove 104, the lubricating oil of the oil passing hole 103 can be less than the first oil passing groove 104 and the second oil passing groove 201 under sufficient conditions, when the lubricating oil on the connecting rod bearing bush 3 is lacked, the lubricating oil in the first oil passing groove 104 and the second oil passing groove 201 can flow onto the inner wall of the connecting rod bearing bush 3 from the oil hole 304 on the connecting rod bearing bush 3, so that the connecting rod bearing bush 3 is fully lubricated and protected, the safety is higher and more stable, and the utilization efficiency of the lubricating oil.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (7)
1. The utility model provides a lubricated connecting rod for engine, includes the connecting rod body of rod (1), locates connecting rod microcephaly (101) of connecting rod body of rod (1) one end, locates the connecting rod bull head (102) of the connecting rod body of rod (1) other end, with connecting rod cap (2) of connecting rod stub (102) detachable connection and connecting rod bolt (4) of connecting rod bull head (102) and connecting rod cap (2), be equipped with connecting rod axle bush (3), its characterized in that between connecting rod bull head (102) and connecting rod cap (2): be equipped with first logical oil groove (104) on the inner wall of connecting rod bull head (102), be equipped with second logical oil groove (201) on the inner wall of connecting rod lid (2), be equipped with logical oilhole (103) in the connecting rod body of rod (1), the one end and the little first (101) of connecting rod intercommunication of logical oilhole (103), the other end and the first logical oil groove (104) intercommunication of logical oilhole (103), logical oilhole (103) are the heliciform through-hole, be equipped with a plurality of oil grooves of getting rid of on the little first (101) of connecting rod, be equipped with the third oil groove on the little first (101) inner wall of connecting rod, tie the oil groove and lead to oilhole (103) intercommunication through the third.
2. The lubricating connecting rod for an engine according to claim 1, wherein: the connecting rod bearing bush (3) comprises a first bearing half bush (301) arranged in the connecting rod big head (102) and a second bearing half bush (302) arranged in the connecting rod cover (2), and a plurality of oil holes (304) are formed in the first bearing half bush (301) and the second bearing half bush (302).
3. The lubricating connecting rod for an engine according to claim 2, wherein: the outer walls of the first half bearing (301) and the second half bearing (302) are provided with a plurality of positioning convex keys (303), the inner wall of the connecting rod big head (102) and the inner wall of the connecting rod cover (2) are provided with a plurality of positioning grooves matched with the positioning convex keys (303), and the positioning grooves are symmetrically distributed on two sides of the first oil through groove (104) and the second oil through groove (201).
4. The lubricating connecting rod for an engine according to claim 1, wherein: first logical oil groove (104) and second logical oil groove (201) intercommunication, first logical oil groove (104) and second logical oil groove (201) internal surface are smooth surface, be equipped with a plurality of oil storage grooves on the inner wall of logical oilhole (103).
5. The lubricating connecting rod for an engine according to claim 1, wherein: the first oil through groove (104) and the second oil through groove (201) are semicircular grooves, and the radius of the first oil through groove (104), the radius of the second oil through groove (201) and the radius of the oil hole (304) are the same.
6. The lubricating connecting rod for an engine according to claim 2, wherein: the oil hole (304) on the first half bearing shell (301) is communicated with the first oil through groove (104), and the oil hole (304) on the second half bearing shell (302) is communicated with the second oil through groove (201).
7. The lubricating connecting rod for an engine according to claim 2, wherein: and the inner surfaces of the first half bearing shell (301) and the second half bearing shell (302) are cast with wear-resistant alloy layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011121762.9A CN112268061A (en) | 2020-10-20 | 2020-10-20 | Lubricating connecting rod for engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011121762.9A CN112268061A (en) | 2020-10-20 | 2020-10-20 | Lubricating connecting rod for engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112268061A true CN112268061A (en) | 2021-01-26 |
Family
ID=74338413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011121762.9A Pending CN112268061A (en) | 2020-10-20 | 2020-10-20 | Lubricating connecting rod for engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112268061A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134920U (en) * | 1986-02-20 | 1987-08-25 | ||
| US4856366A (en) * | 1986-05-27 | 1989-08-15 | Vilter Manufacturing Company | Connecting rod bearing assembly |
| US20050076858A1 (en) * | 2003-10-09 | 2005-04-14 | Beardmore John M. | Connecting rod with lubricant tube |
| JP2005331056A (en) * | 2004-05-21 | 2005-12-02 | Toyota Motor Corp | Bearing lubricating structure of engine |
| JP2006077931A (en) * | 2004-09-10 | 2006-03-23 | Toyota Motor Corp | Connecting rod for internal combustion engine |
| CN201475147U (en) * | 2009-08-19 | 2010-05-19 | 四川绵竹鑫坤机械制造有限责任公司 | Connecting rod of automobile engine |
| CN203321676U (en) * | 2013-04-28 | 2013-12-04 | 重庆小康工业集团股份有限公司 | Offset crankshaft connecting rod mechanism of piston engine |
| CN205278092U (en) * | 2016-01-07 | 2016-06-01 | 重庆小康工业集团股份有限公司 | Engine connecting rod structure |
| CN107747588A (en) * | 2017-11-17 | 2018-03-02 | 安庆中船柴油机有限公司 | A kind of connecting rod lubrication structure of engine |
| CN207278695U (en) * | 2017-10-12 | 2018-04-27 | 浙江昌隆石化设备有限公司 | A kind of big end bearing shell |
| CN207315847U (en) * | 2017-10-12 | 2018-05-04 | 浙江昌隆石化设备有限公司 | A kind of gonnecting rod body |
| CN207454527U (en) * | 2017-11-17 | 2018-06-05 | 安庆中船柴油机有限公司 | A kind of connecting rod lubrication structure of engine |
-
2020
- 2020-10-20 CN CN202011121762.9A patent/CN112268061A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62134920U (en) * | 1986-02-20 | 1987-08-25 | ||
| US4856366A (en) * | 1986-05-27 | 1989-08-15 | Vilter Manufacturing Company | Connecting rod bearing assembly |
| US20050076858A1 (en) * | 2003-10-09 | 2005-04-14 | Beardmore John M. | Connecting rod with lubricant tube |
| JP2005331056A (en) * | 2004-05-21 | 2005-12-02 | Toyota Motor Corp | Bearing lubricating structure of engine |
| JP2006077931A (en) * | 2004-09-10 | 2006-03-23 | Toyota Motor Corp | Connecting rod for internal combustion engine |
| CN201475147U (en) * | 2009-08-19 | 2010-05-19 | 四川绵竹鑫坤机械制造有限责任公司 | Connecting rod of automobile engine |
| CN203321676U (en) * | 2013-04-28 | 2013-12-04 | 重庆小康工业集团股份有限公司 | Offset crankshaft connecting rod mechanism of piston engine |
| CN205278092U (en) * | 2016-01-07 | 2016-06-01 | 重庆小康工业集团股份有限公司 | Engine connecting rod structure |
| CN207278695U (en) * | 2017-10-12 | 2018-04-27 | 浙江昌隆石化设备有限公司 | A kind of big end bearing shell |
| CN207315847U (en) * | 2017-10-12 | 2018-05-04 | 浙江昌隆石化设备有限公司 | A kind of gonnecting rod body |
| CN107747588A (en) * | 2017-11-17 | 2018-03-02 | 安庆中船柴油机有限公司 | A kind of connecting rod lubrication structure of engine |
| CN207454527U (en) * | 2017-11-17 | 2018-06-05 | 安庆中船柴油机有限公司 | A kind of connecting rod lubrication structure of engine |
Non-Patent Citations (2)
| Title |
|---|
| 吉林工业大学拖拉机教研室: "《拖拉机构造 上》", 30 September 1980, 中国农业机械出版社 * |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210126 |
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| RJ01 | Rejection of invention patent application after publication |