CN203939853U - Vehicle motor crank-connecting rod - Google Patents
Vehicle motor crank-connecting rod Download PDFInfo
- Publication number
- CN203939853U CN203939853U CN201420085963.1U CN201420085963U CN203939853U CN 203939853 U CN203939853 U CN 203939853U CN 201420085963 U CN201420085963 U CN 201420085963U CN 203939853 U CN203939853 U CN 203939853U
- Authority
- CN
- China
- Prior art keywords
- rod
- connecting rod
- vehicle motor
- stub end
- motor crank
- 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 - Lifetime
Links
- 208000004141 microcephaly Diseases 0.000 claims description 20
- 230000003014 reinforcing effect Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 3
- 210000000707 wrist Anatomy 0.000 description 6
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000956 alloy Substances 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The utility model relates to a kind of fixed length link being applied on vehicle motor driving mechanism, relate in particular to a kind of engine crank-connecting rod, it comprises the body of rod, is fixedly connected on stub end and the little head end at body of rod two ends, and the sectional area of the described body of rod is arranged by little head end to stub end gradual change.Adopt the technical solution of the utility model, effectively raise structural strength and the impact resistance of crank-connecting rod, met preferably the demand of vehicle real use state, it is simple in structure.
Description
Technical field
The utility model relates to a kind of fixed length link being applied on vehicle motor driving mechanism, relates in particular to a kind of engine crank-connecting rod.
Background technique
Be accompanied by the fast development of World Auto Industry, motor becomes to drilling and day by day requires strict towards high efficiency, low oil consumption, environment protection type direction, and the application boosting of new structure, new process motor to low friction, low oil consumption high-performance future development, the each system parts of motor, except under the prerequisite that meets structure function, is also more and more paid attention to the lightweight of product.
Crank-connecting rod is as the main carriers of crank-connecting rod mechanism for engine linear reciprocating motion, it is bearing the stress alternation that gas pressure and reciprocal inertia force produce, therefore while design, should first ensure that connecting rod has enough fatigue strength and structural rigidity, but the strength and stiffness that increase connecting rod can not simply rely on increasing bar linkage structure size to realize, the increase of connecting rod weight can cause the corresponding increase of inertial force, therefore the general requirement of link design is under light and handy as far as possible structure, to ensure enough Rigidity and strengths, select rational structure and size and technique can improve structural strength and the reliability of connecting rod for this reason, especially interior hole shape and the lubricating system of connecting rod small end end, shaft sectional area shape, connnecting rod big end bolt hole position, the design such as connnecting rod big end end is particularly crucial.
Existing brace and connecting rod framework generally include stub end, little head end and be connected to stub end and little head end between, the body of rod of overall orthogonal structure, in the body of rod, be provided with the oilhole being extended to stub end by little head end, and press-fit alloy bushing in the endoporus of little head end, to ensure the join strength of little head end, but adopt the form that press-fits of alloy bushing, its assembly precision is had relatively high expectations, assemble loaded down with trivial details, and shock-resistant ability and Anti-pull-press ability poor; The endoporus of little head end and wrist pin position friction factor are high, and existing oil hole structure can not be realized better lubricating little head end; Existing bar structure, because it adopts rectangular configuration roughly, its structural strength and poor stability, circularity, the cylindricity retentivity of the endoporus to stub end and little head end are poor; In addition, existing stub end main thrust side bolt hole side and the body of rod and the excessive position of stub end intensity are lower, the anti-uneven load ability at the bolt hole of the body of rod and shaft and the excessive position of big end hole.
Model utility content
For solving the deficiencies in the prior art, the utility model provides a kind of combination property that can improve to meet the vehicle motor crank-connecting rod of vehicle behaviour in service, and it is simple in structure.
For achieving the above object, vehicle motor crank-connecting rod of the present utility model, comprises the body of rod, is fixedly connected on stub end and the little head end at body of rod two ends, and the sectional area of the described body of rod is arranged by little head end to stub end gradual change.By the setting of this structure, improve stability under loading and the structural strength of the body of rod.
As the restriction to aforesaid way, the outer profile of described body of rod both sides be arrange with respect to body of rod center line mirror image, with the circular curve of little head end and the tangent setting of stub end.Adopt this structure, make the endoporus of the body of rod and stub end keep good circularity and cylindricity, improved the overall performance of crank-connecting rod.
As to improvement of the present utility model, in the endoporus of little head end, be provided with the hardened layer forming through high-frequency induction hardening.Replace existing bush structure by hardened layer, reduced the assembly precision requirement of existing bush structure, improved wear resistance and the fatigue strength of bore area.
As the restriction to aforesaid way, the thickness of described hardened layer is 1mm-1.5mm.
As the improvement to aforesaid way, hold hardened layer place corresponding to joint to be provided with projection at the body of rod with microcephaly.By protruding setting, for wrist pin and microcephaly hold the friction of endoporus to afford redress, reduce the suffered impulsive load of endoporus of little head end.
As to improvement of the present utility model, in the body of rod, be provided with oilhole, the aperture of described oilhole becomes large gradually by little head end to stub end.By oilhole is arranged to grading structure, the greasy property that can improve wrist pin and microcephaly and hold matching pair between endoporus, has improved the endurance life of crank-connecting rod.
As to improvement of the present utility model, be provided with reinforcing part with the body of rod of stub end joint.By the setting of reinforcing part, make the strength increase of the main thrust side of the body of rod, anti-impact force strengthens.
As the restriction to aforesaid way, described reinforcing part is triangle.
As to improvement of the present utility model, be provided with the first stiffening rib in the bottom of stub end.By setting up the first stiffening rib, improve the structural strength of stub end, reduce inertial force.
As to improvement of the present utility model, be provided with the second stiffening rib in the bolt joint of stub end.By setting up of the second stiffening rib, can improve local strength and the anti-uneven load ability of the body of rod.
In sum, adopt the technical solution of the utility model, effectively raise structural strength and the impact resistance of crank-connecting rod, met preferably the demand of vehicle real use state, it is simple in structure.
Brief description of the drawings
Below in conjunction with the drawings and the specific embodiments, the utility model is done further to describe in detail:
Fig. 1 is the utility model embodiment one structural representation;
In figure: 1, the body of rod; 2, stub end; 201, major part endoporus; 3, little head end; 301, microcephaly's endoporus; 302, hardened layer; 303, projection; 4, oilhole; 5, reinforcing part; 6, the first stiffening rib; 7, bolt hole; 8, the second stiffening rib.
Embodiment
The present embodiment relates to a kind of vehicle motor crank-connecting rod, and as shown in Figure 1, it comprises the body of rod 1, and the stub end 2 and the microcephaly that are fixedly connected on the body of rod 1 two ends hold 3, are provided with major part endoporus 201 on stub end 2, holds and in 3, is provided with microcephaly's endoporus 301 microcephaly.In order to strengthen wear resistance and the intensity of microcephaly's endoporus 301, be provided with the hardened layer 302 forming through high-frequency induction hardening along microcephaly's endoporus 301 internal surfaces, the thickness of this hardened layer 302 is 1mm-1.5mm; Simultaneously, for in the time wrist pin being assemblied in to microcephaly's endoporus 301 Inner, prevent the frictional loss between the two and produce gap value, hold 3 corresponding hardened layer 302 places, joint at the body of rod 1 with microcephaly, be provided with projection 303, by the setting of this projection 303, to make up the gap value between wrist pin and microcephaly's endoporus 301, to reduce impulsive load and the tension pressure of connecting rod small end hole, improve overall assembly performance.
The sectional area of the body of rod 1 holds 3 to arrange to stub end 2 gradual changes by microcephaly, in the present embodiment, the outer profile of the body of rod 1 both sides be with respect to the body of rod 1 center line mirror image setting, hold 3 and the circular curve of stub end 2 tangent settings with microcephaly, this setting, make to hold the sectional area of 3 the body of rod 1 less near microcephaly, the sectional area of the body of rod 1 of close stub end 2 is larger, it effectively raises stability under loading and the structural strength of the body of rod, and makes stub end 2 and microcephaly hold 3 retentivities with good circularity, cylindricity.In the body of rod 1, be provided with stub end 2 and microcephaly are held to 3 oilholes that are lubricated 4, in the present embodiment, the aperture of oilhole 4 holds 3 to become gradually greatly to stub end 2 by microcephaly, to improve the lubricating condition of wrist pin and microcephaly's endoporus 301.
In order to improve the intensity of main thrust side on the body of rod 1 right side of state shown in figure, on the body of rod 1 of the body of rod 1 and stub end 2 joints, be provided with reinforcing part 5, reinforcing part 5 is triangular structure, in reducing the weight of the body of rod herein, meet the intensity of the body of rod 1 herein.Meanwhile, in order to improve the bottom strength of stub end 2, be provided with the first stiffening rib 6 in the bottom of stub end 2; In addition,, in order to improve overall main thrust side in the intensity at bolt hole 7 places of stub end 2, be provided with the second stiffening rib 8 in the bolt joint of stub end 2.
Claims (8)
1. a vehicle motor crank-connecting rod, comprises the body of rod, is fixedly connected on stub end and the little head end at body of rod two ends, it is characterized in that: the sectional area of the described body of rod is arranged by little head end to stub end gradual change; In the endoporus of little head end, be provided with the hardened layer forming through high-frequency induction hardening; Hold hardened layer place corresponding to joint to be provided with projection at the body of rod with microcephaly.
2. vehicle motor crank-connecting rod according to claim 1, is characterized in that: the outer profile of described body of rod both sides be arrange with respect to body of rod center line mirror image, with the circular curve of little head end and the tangent setting of stub end.
3. vehicle motor crank-connecting rod according to claim 1, is characterized in that: the thickness of described hardened layer is 1mm-1.5mm.
4. vehicle motor crank-connecting rod according to claim 1 and 2, is characterized in that: in the body of rod, be provided with oilhole, the aperture of described oilhole becomes large gradually by little head end to stub end.
5. vehicle motor crank-connecting rod according to claim 1 and 2, is characterized in that: be provided with reinforcing part with the body of rod of stub end joint.
6. vehicle motor crank-connecting rod according to claim 5, is characterized in that: described reinforcing part is triangle.
7. vehicle motor crank-connecting rod according to claim 1 and 2, is characterized in that: be provided with the first stiffening rib in the bottom of stub end.
8. vehicle motor crank-connecting rod according to claim 1 and 2, is characterized in that: the bolt joint at stub end is provided with the second stiffening rib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420085963.1U CN203939853U (en) | 2014-02-27 | 2014-02-27 | Vehicle motor crank-connecting rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420085963.1U CN203939853U (en) | 2014-02-27 | 2014-02-27 | Vehicle motor crank-connecting rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203939853U true CN203939853U (en) | 2014-11-12 |
Family
ID=51859168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420085963.1U Expired - Lifetime CN203939853U (en) | 2014-02-27 | 2014-02-27 | Vehicle motor crank-connecting rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203939853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224094A (en) * | 2016-08-31 | 2016-12-14 | 河北华北柴油机有限责任公司 | 12 cylinder water-cooled Diesel engines |
| CN107246436A (en) * | 2017-06-12 | 2017-10-13 | 南通爱慕希机械股份有限公司 | A kind of engine link |
-
2014
- 2014-02-27 CN CN201420085963.1U patent/CN203939853U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106224094A (en) * | 2016-08-31 | 2016-12-14 | 河北华北柴油机有限责任公司 | 12 cylinder water-cooled Diesel engines |
| CN107246436A (en) * | 2017-06-12 | 2017-10-13 | 南通爱慕希机械股份有限公司 | A kind of engine link |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141112 |