CN202646342U - Engine and cracking connecting rod thereof - Google Patents
Engine and cracking connecting rod thereof Download PDFInfo
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- CN202646342U CN202646342U CN 201220198921 CN201220198921U CN202646342U CN 202646342 U CN202646342 U CN 202646342U CN 201220198921 CN201220198921 CN 201220198921 CN 201220198921 U CN201220198921 U CN 201220198921U CN 202646342 U CN202646342 U CN 202646342U
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Abstract
The utility model provides a cracking connecting rod. The cracking connecting rod comprises a big connecting rod end, a small connecting rod end and a connecting rod body which is connected between the big connecting rod end and the small connecting rod end, wherein cracking grooves are arranged at cracking positions in a bearing hole of the big connecting rod end and the corresponding position of an outer side of the big connecting rod end. The cracking grooves are arranged at the inner side and the outer side of the big connecting rod end, so the cracking grooves all have contracting effects, and further the stress concentration is improved, the condition that the cracking is carried out according to a preset position during cracking can be ensured, the tolerance of cracking technology can be controlled preferably, and reducing conditions that a cracking line goes off center or a long arm end of the big end is deformed, thus improving the qualified rate of products. The utility model further provides an engine. The engine comprises a crankshaft, a piston and a connecting rod, wherein the big end of the connecting rod is connected with the crankshaft, and the small end of the connecting rod is connected with the piston; and the connecting rod is the cracking connecting rod provided by the utility model.
Description
Technical field
The utility model relates to the engine manufacturing technology field, more particularly, relates to a kind of cracking connecting rod that rises, and the utility model also relates to a kind of motor with the above-mentioned cracking connecting rod that rises.
Background technique
One of the direction of transfer of connecting rod conduct change power in motor and the most important component of mode, be used for various motors, its big end hole is connected with bent axle, the microcephaly hole is connected with piston by wrist pin, the straight line motion that acts on the gas expansion pressure of piston is passed to bent axle change into and rotatablely move.In the course of the work, it is bearing higher periodic shock power, inertial force, compressive stress, collapsing stress, tensile stress and dynamic load etc., therefore requires connecting rod weight to want light, and higher intensity, toughness and fatigue behaviour must be arranged.
Along with the development of connecting rod production technology, connecting rod shank mills, saws or draw this quasi-tradition cutting working method with the no longer employing that separates of lid, but has adopted up-to-date con-rod fracture splitting processing technique (also claiming connecting rod cracking).This technology replaces parts processing with integral body processing, its process principle is by the design of appropriate location in the connecting rod bottom-end bearing hole and prefabricated breach (prefabricated splitter), while with pre-crackles of method manufacturing such as mechanical means or laser techniques, forms the initial collapse source in indentation, there; Draw when splitting indentation, there perpendicular to the load of predetermined fracture surface will to produce stress concentrated initiatively applying, when satisfying the condition that brittle fracture occurs, in the situation that plastic deformation occurs hardly, connecting rod is realized the chipless fracture subdivision of connecting rod shank and connecting rod cap in the indentation, there rule breaking.Because fracture surface is indenting natural form, has high location and quality of fit, need not reprocessing.In follow-up big end hole fine finishing and assembly process, with the three-dimension curved surface location of fracture subdivision, the connecting rod cap after the separation and connecting rod shank mesh naturally at the fracture surface place, accurately attach together, and have guaranteed fine finishing and the connecting rod assembly quality in follow-up connecting rod bottom-end bearing hole.
But, owing in the prior art appropriate location design and prefabricated splitter in the connecting rod bottom-end bearing hole, the wayward breaking process tolerance that rises, the broken string that often can cause rising wanders off or the major part long arm end is out of shape, and has reduced the up-to-standard rate of product.
In sum, how providing a kind of cracking connecting rod that rises, to control better the breaking process tolerance that rises, reduce the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then improve the up-to-standard rate of product, is the technical problem that present those skilled in the art need to be resolved hurrily.
The model utility content
In view of this, the purpose of this utility model is to provide a kind of cracking connecting rod that rises, and to control better the breaking process tolerance that rises, reduces the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then improves the up-to-standard rate of product.
In order to achieve the above object, the utility model provides following technological scheme:
A kind of cracking connecting rod that rises comprises connnecting rod big end, connecting rod small end and be connected to described connnecting rod big end and described connecting rod small end between connecting rod shank, the cracking in the bearing hole of described connnecting rod big end sentences and the relative position in the outside is provided with splitter.
Preferably, in the above-mentioned cracking connecting rod that rises, described splitter place is provided with pre-crackle.
Preferably, in the above-mentioned cracking connecting rod that rises, described pre-crackle is processed by laser technique, and the degree of depth of described pre-crackle is 0.2-0.4mm.
Preferably, in the above-mentioned cracking connecting rod that rises, the groove depth of described splitter is all consistent.
Preferably, in the above-mentioned cracking connecting rod that rises, described splitter is C type groove.
Preferably, in the above-mentioned cracking connecting rod that rises, described connecting rod small end is wedge-shaped structure.
Preferably, in the above-mentioned cracking connecting rod that rises, also be provided with lining in the mounting hole of described connecting rod small end, be provided with oil leab on this lining.
Preferably, in the above-mentioned cracking connecting rod that rises, the section of described connecting rod shank is I type section.
Preferably, in the above-mentioned cracking connecting rod that rises, this cracking connecting rod that rises is the forged steel connecting rod.
Based on the above-mentioned cracking connecting rod that rises that provides, the utility model also provides a kind of motor, comprises bent axle, and piston and the connecting rod that stub end links to each other with described bent axle, little head end links to each other with described piston, described connecting rod are the described cracking connecting rod that rises of above-mentioned any one.
The cracking connecting rod that rises that the utility model provides comprises connnecting rod big end, connecting rod small end and be connected to described connnecting rod big end and described connecting rod small end between connecting rod shank, the cracking in the bearing hole of described connnecting rod big end sentences and the relative position in the outside is provided with splitter.Because the inside and outside both sides of described connnecting rod big end are provided with described splitter, this splitter all has the reducing effect, having improved stress concentrates, carry out cracking according to the precalculated position when guaranteeing cracking, can control better the breaking process tolerance that rises, reduce the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then improved the up-to-standard rate of product.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technological scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the plan view of the cracking connecting rod that rises that provides of the utility model embodiment;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
The utility model embodiment provides a kind of cracking connecting rod that rises, and can control better the breaking process tolerance that rises, and has reduced the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then has improved the up-to-standard rate of product.
For the purpose, technological scheme and the advantage that make the utility model embodiment clearer, below in conjunction with the accompanying drawing among the utility model embodiment, technological scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, rather than whole embodiments.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment who obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
Please refer to accompanying drawing 1-2, the cracking connecting rod that rises that the utility model embodiment provides comprises connnecting rod big end 1, connecting rod small end 3 and be connected to connnecting rod big end 1 and connecting rod small end 3 between connecting rod shank 2, the cracking in the bearing hole of connnecting rod big end 1 sentences and the relative position in the outside is provided with splitter 4.Because the inside and outside both sides of connnecting rod big end 1 are provided with splitter 4, this splitter 4 all has the reducing effect, having improved stress concentrates, carry out cracking according to the precalculated position when guaranteeing cracking, can control better the breaking process tolerance that rises, reduce the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then improved the up-to-standard rate of product.
Concrete, in the cracking connecting rod that rises that above-described embodiment provides, splitter 4 places are provided with pre-crackle; Reduce required cracking strength in the con-rod fracture splitting processing, and improved Splitting Processing Quality.
Further, above-mentioned pre-crackle is processed by laser technique, and the degree of depth of pre-crackle is 0.2-0.4mm.Certainly, this pre-crackle also can be processed by mechanical means or additive method.
In order further to improve fracture quality, in the cracking connecting rod that rises that above-described embodiment provides, the groove depth of splitter 4 is all consistent, and the cracking strength sizableness that each splitter 4 is subject to carries out cracking according to the precalculated position when having guaranteed cracking.
Preferably, in the cracking connecting rod that rises that above-described embodiment provides, splitter 4 is C type groove.Than the V-type groove, this C type groove can reduce the generation of major part long arm end distortion.
In order further to optimize technique scheme, in the cracking connecting rod that rises that above-described embodiment provides, connecting rod small end 3 is wedge-shaped structure, has simplified the processing technology of connecting rod small end 3.Certainly, above-mentioned connecting rod small end 3 also can adopt the relatively complicated ladder-type structure of processing technology, should select according to actual needs its structural type.
In order to improve the wear resistance of connecting rod small end 3, also be provided with lining in the mounting hole of connecting rod small end 3, be provided with oil leab on this lining.Above-mentioned lining is made by high-abrasive material, has good wear resistance.
Preferably, in the cracking connecting rod that rises that above-described embodiment provides, the section of connecting rod shank 2 is I type section, has preferably rigidity to guarantee it.
Concrete, the cracking connecting rod that rises that above-described embodiment provides is the forged steel connecting rod.Certainly, it can also adopt other materials to make, but must satisfy certain performance requirement.
The utility model embodiment also provides a kind of motor, comprises bent axle, the cracking connecting rod that rises of any one that piston and the connecting rod that stub end links to each other with bent axle, little head end links to each other with piston, connecting rod provide for the utility model embodiment.
The cracking connecting rod that rises that provides in the present embodiment is provided above-mentioned motor, can control better the breaking process tolerance that rises, reduced the generation that broken string wanders off or the major part long arm end is out of shape of rising, and then improved the up-to-standard rate of product, its advantage is brought by the cracking connecting rod that rises, concrete please refer to part relevant in above-described embodiment, just repeat no more at this.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed is and other embodiments' difference that identical similar part is mutually referring to getting final product between each embodiment.
To the above-mentioned explanation of the disclosed embodiments, make related domain professional and technical personnel can realize or use the utility model.Multiple modification to these embodiments will be apparent concerning those skilled in the art, and General Principle as defined herein can in the situation that does not break away from spirit or scope of the present utility model, realize in other embodiments.Therefore, the utility model will can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. cracking connecting rod that rises, comprise connnecting rod big end (1), connecting rod small end (3) and be connected to described connnecting rod big end (1) and described connecting rod small end (3) between connecting rod shank (2), it is characterized in that the cracking in the bearing hole of described connnecting rod big end (1) sentences and the relative position in the outside is provided with splitter (4).
2. the cracking connecting rod that rises according to claim 1 is characterized in that, described splitter (4) locates to be provided with pre-crackle.
3. the cracking connecting rod that rises according to claim 2 is characterized in that, described pre-crackle is processed by laser technique, and the degree of depth of described pre-crackle is 0.2-0.4mm.
4. the cracking connecting rod that rises according to claim 1 is characterized in that, the groove depth of described splitter (4) is all consistent.
5. the cracking connecting rod that rises according to claim 4 is characterized in that, described splitter (4) is C type groove.
6. the cracking connecting rod that rises according to claim 1 is characterized in that, described connecting rod small end (3) is wedge-shaped structure.
7. the cracking connecting rod that rises according to claim 6 is characterized in that, also is provided with lining in the mounting hole of described connecting rod small end (3), is provided with oil leab on this lining.
8. the cracking connecting rod that rises according to claim 1 is characterized in that, the section of described connecting rod shank (2) is I type section.
9. the described cracking connecting rod that rises of any one is characterized in that according to claim 1-8, and this cracking connecting rod that rises is the forged steel connecting rod.
10. a motor comprises bent axle, and piston links to each other with described bent axle with stub end, little head end and the connecting rod that described piston links to each other, and it is characterized in that, described connecting rod is the described cracking connecting rod that rises of the claims 1-9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198921 CN202646342U (en) | 2012-05-04 | 2012-05-04 | Engine and cracking connecting rod thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220198921 CN202646342U (en) | 2012-05-04 | 2012-05-04 | Engine and cracking connecting rod thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202646342U true CN202646342U (en) | 2013-01-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220198921 Expired - Lifetime CN202646342U (en) | 2012-05-04 | 2012-05-04 | Engine and cracking connecting rod thereof |
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| CN (1) | CN202646342U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939454A (en) * | 2013-01-21 | 2014-07-23 | 重庆长安汽车股份有限公司 | Engine cracking connecting rod and machining method thereof |
| CN107328625A (en) * | 2017-07-31 | 2017-11-07 | 水利部交通运输部国家能源局南京水利科学研究院 | The method of crackle is close in a kind of simulation rock interior three-dimensional closing |
| CN111981028A (en) * | 2020-09-01 | 2020-11-24 | 潍柴动力股份有限公司 | Cracking connecting rod and engine |
| CN112204267A (en) * | 2018-05-29 | 2021-01-08 | 罗伯特·博世有限公司 | Foil bearing |
-
2012
- 2012-05-04 CN CN 201220198921 patent/CN202646342U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103939454A (en) * | 2013-01-21 | 2014-07-23 | 重庆长安汽车股份有限公司 | Engine cracking connecting rod and machining method thereof |
| CN107328625A (en) * | 2017-07-31 | 2017-11-07 | 水利部交通运输部国家能源局南京水利科学研究院 | The method of crackle is close in a kind of simulation rock interior three-dimensional closing |
| CN107328625B (en) * | 2017-07-31 | 2020-07-03 | 水利部交通运输部国家能源局南京水利科学研究院 | Method for simulating three-dimensional closed close-fitting cracks in rock |
| CN112204267A (en) * | 2018-05-29 | 2021-01-08 | 罗伯特·博世有限公司 | Foil bearing |
| CN111981028A (en) * | 2020-09-01 | 2020-11-24 | 潍柴动力股份有限公司 | Cracking connecting rod and engine |
| CN111981028B (en) * | 2020-09-01 | 2021-11-19 | 潍柴动力股份有限公司 | Cracking connecting rod and engine |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |