CN208396814U - High strengthening engine piston connecting rod structure - Google Patents
High strengthening engine piston connecting rod structure Download PDFInfo
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- CN208396814U CN208396814U CN201820928045.9U CN201820928045U CN208396814U CN 208396814 U CN208396814 U CN 208396814U CN 201820928045 U CN201820928045 U CN 201820928045U CN 208396814 U CN208396814 U CN 208396814U
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- connecting rod
- small end
- section
- small
- engine piston
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Abstract
The utility model discloses a kind of high strengthening engine piston connecting rod structure, including small end of connecting rod, gonnecting rod body and big end, small end of connecting rod is separately fixed at the both ends of gonnecting rod body with big end, and the big end other end is fixedly connected with connecting rod cap；Small end of connecting rod and lining of connecting rod small end are hole axle cooperation, small end of connecting rod includes small end of connecting rod top, small end of connecting rod lower part, the interface of small end of connecting rod top and small end of connecting rod lower part is section in the middle part of small end of connecting rod, section to the wall thickness between small end of connecting rod upper end is successively thinned in the middle part of small end of connecting rod, the arbitrary cross section on small end of connecting rod top is small end of connecting rod top section, and small end of connecting rod top section is trapezoidal.By the way that the wall thickness on small end of connecting rod top is thinned and changes small end of connecting rod top cross sectional shape, realizes the lightweight of piston rod, reduce the vibration of engine；The two-dimensional barcode information of link parameters is preserved, by being arranged on connecting rod cap bottom face to improve the trackability of product information.
Description
Technical field
The utility model relates to technical field of automobile engine, in particular to a kind of high strengthening engine piston connecting rod knot
Structure.
Background technique
In the case where the increasingly harsh energy conservation and environmental protection of automobile industry requires, automobile engine is increasingly becoming using small sized turbine pressurization
Main trend, engine performance reinforcing degree and structural compactness are higher and higher, and the detonation pressure of high strengthening engine is up to 120bar
More than, engine link bears mechanical load and greatly improves, while also facing the light-weight design requirement of structural weight reduction.
It is approximate rectangular structure that existing connecting rod small end of engine, which is equal wall thickness, wall thickness section, when engine ignition
Generate explosion pressure, small end of connecting rod is big by piston pin pressure at shaft, when piston is located at top dead centre, small end of connecting rod top by
Piston pin pulling force is relatively small；On the other hand, according to simulation analysis, stress is smaller in the outer part in small end of connecting rod wall thickness section, safety
Coefficient is relatively large.Therefore, traditional small end of connecting rod using etc. the approximate rectangular structure of wall thickness and wall thickness section have it is certain
Lightweight optimizes space, vibration of the current engine piston connecting rod due to there is a biggish inertia mass, when engine operation
Dynamic level is higher.
Utility model content
The purpose of this utility model seeks to overcome above-mentioned the shortcomings of the prior art, and piston company can be met by providing one kind
Bar light-weight design requires, reduces the piston connecting rod structure of connecting rod bolt holes processing technology difficulty.
To achieve the above object, the utility model provides a kind of high strengthening engine piston connecting rod structure, including connecting rod is small
Head, gonnecting rod body, big end, the small end of connecting rod and big end are separately fixed at the both ends of gonnecting rod body, the big end
The other end is fixedly connected with connecting rod cap；The small end of connecting rod and lining of connecting rod small end are hole axle cooperation, it is characterised in that: the connecting rod
Microcephaly includes small end of connecting rod top, small end of connecting rod lower part, and the interface of the small end of connecting rod top and small end of connecting rod lower part is to connect
The small centriciput section of bar, small end of connecting rod middle part section to the wall thickness between small end of connecting rod upper end are successively thinned, connecting rod
The arbitrary cross section on microcephaly top is small end of connecting rod top section, and small end of connecting rod top section is trapezoidal.
Further, small end of connecting rod top cross section profile includes straight flange in section, straight flange and section side outside section,
The length of straight flange is less than the length of straight flange in section outside the section, and the section side is outer convex.
Further, the lining of connecting rod small end inner wall is equipped with connecting rob bushing oil groove, and the connecting rob bushing oil groove is in V word
Type.
Further, the junction of the big end and connecting rod cap is provided with connecting rod bolt holes, the big end with
Connecting rod cap is threadedly engaged realization connection by connecting-rod bolts and connecting rod bolt holes.
Further, boss is provided on the bottom face of the connecting rod cap, connecting rod ginseng can be stored by being fixed on the boss
Several two dimensional codes.
The beneficial effects of the utility model are:
1, the level of vibration of engine operation is reduced.Small end of connecting rod top is than small end of connecting rod middle part by piston in actual motion
It is small to sell pressure, and stress is small compared with inside in the outer part in wall thickness section.Small end of connecting rod wall thickness is successively thinned from middle part to top, and connecting rod is cut
Face uses wedge-shaped design, and cross-sectional width is sequentially reduced from the interior outside that measures.Guaranteeing that small end of connecting rod meets intensity requirement in this way
Under the premise of, the lightweight of small end of connecting rod is not only realized, but also reduce inertia force when piston rod moves back and forth, to drop
Vibration when low engine operation.
2, the trackability of product is improved.The two dimensional code letter of link parameters is preserved by being arranged on connecting rod cap bottom face
Breath, to improve the trackability of product information.
Detailed description of the invention
Fig. 1 is piston connecting rod structure broken away view.
Fig. 2 is piston rod and crankshaft installation diagram.
Fig. 3 is small end of connecting rod partial enlarged view.
Fig. 4 be in Fig. 2 A to cross-sectional view.
Fig. 5 is lining of connecting rod small end partial enlarged view.
Fig. 6 is boss partial enlarged view.
Fig. 7 is feed schematic diagram when stud exit is processed.
Each part numbers are as follows in figure: 1.2, small end of connecting rod of 1.1, small end of connecting rod middle part at the top of small end of connecting rod 1, small end of connecting rod
Straight flange 1.3.1 in top section 1.3, section, straight flange 1.3.2 outside section, section side 1.3.3, gonnecting rod body 2, big end 3,
Big end top bearing shell 3.1, connecting rod cap 4, lining of connecting rod small end 5, connecting rob bushing oil groove 5.1, connects big end lower bearing 3.2
Bar bolt 6, connecting-rod bolts outlet 6.1, connecting-rod bolts import 6.2, connecting rod bolt holes 6.3, boss 7, piston pin 8, crankshaft 9, song
Axis connecting rod neck 9.1, milling cutter 10.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawing, convenient for more clearly understanding that this is practical new
Type, but they do not constitute the utility model and limit.
As shown in Fig. 1~7, a kind of high strengthening engine piston connecting rod structure, including small end of connecting rod 1, gonnecting rod body 2, connecting rod
Major part 3 and connecting rod cap 4；Small end of connecting rod 1, gonnecting rod body 2, big end 3 are an overall structure, and the both ends of gonnecting rod body 2 are respectively
Small end of connecting rod 1 and big end 3, connecting rod cap 4 are fixedly connected by connecting-rod bolts 6 with big end 3；Small end of connecting rod 1 is annular,
The intermediate circular hole of small end of connecting rod 1 is inserted in lining of connecting rod small end 5, and lining of connecting rod small end 5 is connect by clearance fit with piston pin 8,
The connecting rob bushing oil groove 5.1 in V-shape is provided on the inner wall of lining of connecting rod small end 5, the tank structure of V-shape is conducive to storage more
More lubricating oil is effectively cooled down and is lubricated to the relative motion between small end of connecting rod 1 and piston pin 8.
Small end of connecting rod 1 includes small end of connecting rod top 1.1 and small end of connecting rod lower part 1.2, and small end of connecting rod top 1.1 and connecting rod are small
The interface of head lower part 1.2 is section 1.4 in the middle part of connecting rod, and the small end of connecting rod lower part 1.2 connecting with gonnecting rod body 2 is by piston pin 8
Pressure is larger, and small end of connecting rod top 1.1 is smaller by 8 pulling force of piston pin, from section 1.4 to the small end of connecting rod of small end of connecting rod middle part
Radial thickness between 1.1 top of portion is successively thinned, and alleviates weight while meeting structural strength in this way；On small end of connecting rod
The arbitrary section in portion 1.1 is small end of connecting rod top section 1.3, and the profile in small end of connecting rod top section 1.3 includes straight flange in section
1.3.1, straight flange 1.3.2 and section side 1.3.3 outside section, the stress of 1.3 side of straight flange outside section of small end of connecting rod top 1.1
Stress than the straight flange 1.3.1 in section is small, and small end of connecting rod top section 1.3 is trapezoidal, and straight flange 1.3.2 length is less than outside section
Straight flange 1.3.1 in section, section side 1.3.3 are the arc of evagination.Small end of connecting rod 1 is further in the case where meeting intensity requirement in this way
It realizes loss of weight, inertia force when piston rod moves back and forth is reduced, thus vibration when reducing engine operation.
In above-mentioned technical proposal, in a ring, it is made of big end 3 two semi-rings, and upper half ring connects gonnecting rod body 2, under
Semi-ring is connecting rod cap 4, and the inside of upper half ring is equipped with big end top bearing shell 3.1, and the inside of lower semi-ring is equipped with big end lower axle
Watts 3.2；Big end 3 passes through the crank-shaft link neck on big end top bearing shell 3.1 and big end lower bearing 3.2 and crankshaft 9
9.1 are cooperatively connected, and are then threadedly engaged and are fastened with connecting rod bolt holes 6.3 by connecting-rod bolts 6；Connecting rod bolt holes
6.3 both ends are respectively connecting-rod bolts import 6.2 and connecting-rod bolts outlet 6.1, and connecting-rod bolts import 6.2 is located at 4 bottom end of connecting rod cap
Face two sides, connecting-rod bolts outlet 6.1 are located on 3 outer side surface of big end；The bottom face of connecting rod cap 4 be located at connecting-rod bolts into
It is provided with boss 7 between mouth 6.2, the two dimensional code that can store link parameters is pasted on boss 7.In this way, the two dimensional code is by every
The information integrations one such as date of manufacture, batch, the grouping of major part aperture, the grouping of connecting rod weight of connecting rod, barcode scanning is i.e. recognizable, for
The part retrospect of production, detection and later period provides great convenience.
In above-mentioned technical proposal, connecting rod bolt holes 6.3 after processing is completed, can exist at connecting-rod bolts outlet 6.1 and answer
Power is concentrated, and need to carry out secondary operation, direction of feed and the threaded hole 6.3 of milling cutter 10 to connecting-rod bolts outlet 6.1 with milling cutter 10
Direction is vertical, and the stress for not only eliminating connecting-rod bolts outlet 6.1 in this way is concentrated, and due to the radial dimension of small end of connecting rod 1
Greater than the radial dimension of gonnecting rod body 2, the interference formed using small end of connecting rod 1 when axial feed to milling cutter 10 is avoided, is reduced
The technology difficulty of processing.
Claims (5)
1. a kind of high strengthening engine piston connecting rod structure, including small end of connecting rod (1), gonnecting rod body (2) and big end (3), institute
It states small end of connecting rod (1) and big end (3) and is separately fixed at the both ends of gonnecting rod body (2), big end (3) other end is fixed
It connects connecting rod cap (4)；The small end of connecting rod (1) and lining of connecting rod small end (5) hole axle cooperate, it is characterised in that: the connecting rod is small
Head (1) includes small end of connecting rod top (1.1) and small end of connecting rod lower part (1.2), the small end of connecting rod top (1.1) and small end of connecting rod
The interface of lower part (1.2) is section (1.4) in the middle part of small end of connecting rod, small to connecting rod from section (1.4) in the middle part of the small end of connecting rod
Wall thickness between head top (1.1) top is successively thinned, and the arbitrary cross section of small end of connecting rod top (1.1) is small end of connecting rod top
Section (1.3), small end of connecting rod top section (1.3) are trapezoidal.
2. high strengthening engine piston connecting rod structure according to claim 1, it is characterised in that: the small end of connecting rod top
Section (1.3) profile includes straight flange in section (1.3.1), straight flange (1.3.2) and section side (1.3.3) outside section, and described section
The length of straight flange (1.3.2) is less than the length of straight flange (1.3.1) in section outside face, and the section side (1.3.3) is outer convex arc
Shape.
3. high strengthening engine piston connecting rod structure according to claim 1, it is characterised in that: the lining of connecting rod small end
(5) inner wall is equipped with connecting rob bushing oil groove (5.1), and the connecting rob bushing oil groove (5.1) is in V-shape.
4. high strengthening engine piston connecting rod structure according to claim 1, it is characterised in that: the big end (3)
It is provided with connecting rod bolt holes (6.3) with the junction of connecting rod cap (4), the big end (3) and connecting rod cap (4) pass through connecting rod spiral shell
Bolt (6) and connecting rod bolt holes (6.3) are threadedly engaged realization connection.
5. high strengthening engine piston connecting rod structure according to claim 1, it is characterised in that: the connecting rod cap (4)
It is provided on bottom face boss (7), is fixed with the two dimensional code that can store link parameters on the boss (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820928045.9U CN208396814U (en) | 2018-06-15 | 2018-06-15 | High strengthening engine piston connecting rod structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820928045.9U CN208396814U (en) | 2018-06-15 | 2018-06-15 | High strengthening engine piston connecting rod structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208396814U true CN208396814U (en) | 2019-01-18 |
Family
ID=65132542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820928045.9U Active CN208396814U (en) | 2018-06-15 | 2018-06-15 | High strengthening engine piston connecting rod structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208396814U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111488754A (en) * | 2019-01-25 | 2020-08-04 | 通用汽车环球科技运作有限责任公司 | Mounting components of an internal combustion engine using a wireless tag |
| CN113167318A (en) * | 2019-01-28 | 2021-07-23 | 日本精工株式会社 | Bearing member, bearing, machine, vehicle, method for identifying individual bearing member, method for manufacturing bearing, method for manufacturing machine, and method for manufacturing vehicle |
-
2018
- 2018-06-15 CN CN201820928045.9U patent/CN208396814U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111488754A (en) * | 2019-01-25 | 2020-08-04 | 通用汽车环球科技运作有限责任公司 | Mounting components of an internal combustion engine using a wireless tag |
| CN113167318A (en) * | 2019-01-28 | 2021-07-23 | 日本精工株式会社 | Bearing member, bearing, machine, vehicle, method for identifying individual bearing member, method for manufacturing bearing, method for manufacturing machine, and method for manufacturing vehicle |
| CN113167318B (en) * | 2019-01-28 | 2024-02-02 | 日本精工株式会社 | Bearing member, bearing, machine, vehicle, individual identification method for bearing member, manufacturing method for bearing, manufacturing method for machine, and manufacturing method for vehicle |
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