CN105351106A - Novel split-type piston structure - Google Patents
Novel split-type piston structure Download PDFInfo
- Publication number
- CN105351106A CN105351106A CN201510927294.7A CN201510927294A CN105351106A CN 105351106 A CN105351106 A CN 105351106A CN 201510927294 A CN201510927294 A CN 201510927294A CN 105351106 A CN105351106 A CN 105351106A
- Authority
- CN
- China
- Prior art keywords
- piston
- upper body
- lower body
- connecting bolt
- wrist pin
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
- F02F3/0015—Multi-part pistons
- F02F3/0023—Multi-part pistons the parts being bolted or screwed together
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention provides a novel split-type piston structure which comprises a piston upper body, a piston lower body, locating pins, connecting bolts, nuts and a sleeve, wherein spacing holes are formed in the contact surfaces of the piston upper body and the piston lower body in corresponding positions; the locating pins are inserted into the spacing holes for location; the piston upper body and the piston lower body are fixedly connected into an integral body through the connecting bolts; the nuts are arranged at the bottoms of the connecting bolts; an arc-shaped groove is formed in each of the contact surfaces of the piston upper body and the piston lower body; the two arc-shaped grooves correspond to form a piston pin base hole; and the sleeve is mounted in the piston pin base hole. The novel split-type piston structure has the advantages that if the diameter or the surface state of the piston pin base hole becomes abnormal, the connecting bolts can be loosened for changing a sleeve with a better state, and the molded line of the piston pin base hole can be processed again, so that the novel split-type piston structure is good in interchangeability and easy to operate.
Description
Technical field
The invention belongs to internal combustion engine technical field of structures, especially relate to a kind of New type detachable piston structure.
Background technique
In current internal-combustion engine industry, conventional piston structure is integrated type or steel top aluminium apron split-type structural, and structure comparison is single.Require to improve constantly along with to the power character of motor, the motor reinforcing degree of a new generation is more and more higher, wherein some type power per liter improves nearly one times, thus cause the heat load of piston and mechanical load to be multiplied, by installing copper bush in wrist pin bore, to increase the bearing capacity of key seat, improve piston pin boss place stress distribution, improve piston life.
In prior art, a kind of piston pin boss not mounting bush, piston is that cast inblock forms, and key seat place region common used material is aluminum alloy, key seat bearing capacity is relatively weak, and this kind of structure piston key seat bore dia size or bore area occur extremely whole piston being caused to scrap; Another kind of wrist pin bore mounting bush, lining generally loads in piston pin boss bottom outlet by cooled with liquid nitrogen, piston is that cast inblock forms, key seat place region common used material is aluminum alloy, by increasing the structure of copper bush, the bearing capacity of key seat greatly can be increased, but due to lining interference loading piston pin boss bottom outlet, very difficult more resleeve, so this kind of structure piston key seat bore dia size or bore area occur extremely also causing whole piston to be scrapped.
Summary of the invention
In view of this, the present invention is intended to propose a kind of New type detachable piston structure, occurs the abnormal problem that will whole piston caused to scrap to solve plug pin bore diameter dimension or bore area.
For achieving the above object, technological scheme of the present invention is achieved in that
A kind of New type detachable piston structure, comprise piston upper body, piston lower body, locating stud, connecting bolt, nut and lining, the surface of contact corresponding position of described piston upper body and piston lower body is equipped with positioning hole, inserts locating stud and position in positioning hole; Described piston upper body is fixedly connected with as a whole with piston lower body by connecting bolt, arrange nut bottom connecting bolt; Surface of contact between described piston upper body and piston lower body respectively has a curve bath, forms wrist pin bore, mounting bush in wrist pin bore after two curve bath correspondences.
Further, described piston upper body and piston lower body are by four locating stud location, and the both sides of piston upper body and piston lower body all arrange two for inserting the positioning hole of locating stud.
Further, described piston upper body and piston lower body realize fastening by four connecting bolts, and the both sides of piston upper body and piston lower body all arrange two connecting bolts.
Further, the profile processing order of described wrist pin bore is: the first step, is tightened by connecting bolt by tightening specification, and reprocessing wrist pin bore is to given size; Second step, unclamp connecting bolt and mounting bush in wrist pin bore, then tighten connecting bolt by tightening specification, molded line processed by lining.
Relative to prior art, the present invention has following advantage:
(1) piston pin boss hole structure of the present invention is split type, adopt finger setting, connecting bolt is fastening, if the diameter dimension of wrist pin bore or surface state occur abnormal, connecting bolt can be unclamped and change lining in good condition, can machining piston key seat pass line again, so this kind of New type detachable piston has good interchangeability and is easy to operation;
(2) molded line structure as early stage can not meet the demands, only need more again to process by new design molded line after resleeve part, piston still can continue installation to be tested, until filter out best key seat pass line, so this kind of New type detachable piston has the advantage of saving lead time and development cost.
Accompanying drawing explanation
The accompanying drawing forming a part of the present invention is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation of New type detachable piston structure described in the embodiment of the present invention;
Fig. 2 is another structural representation of New type detachable piston structure described in the embodiment of the present invention.
Description of reference numerals:
1-piston upper body, 2-piston lower body, 3-locating stud, 4-connecting bolt, 5-nut, 6-lining.
Embodiment
It should be noted that, when not conflicting, the embodiment in the present invention and the feature in embodiment can combine mutually.
Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
A kind of New type detachable piston structure, as shown in Figure 1, 2, comprise piston upper body 1, piston lower body 2, locating stud 3, connecting bolt 4, nut 5 and lining 6, the surface of contact corresponding position of described piston upper body 1 and piston lower body 2 is equipped with positioning hole, inserts locating stud 3 and position in positioning hole; Described piston upper body 1 is fixedly connected with as a whole with piston lower body 2 by connecting bolt 4, arranges nut 5 bottom connecting bolt 4; Surface of contact between described piston upper body 1 and piston lower body 2 respectively has a curve bath, forms wrist pin bore after two curve bath correspondences, mounting bush 6 in wrist pin bore.
Described piston upper body 1 and piston lower body 2 are located by four locating studs 3, and the both sides of piston upper body 1 and piston lower body 2 all arrange two for inserting the positioning hole of locating stud 3.
Described piston upper body 1 and piston lower body 2 realize fastening by four connecting bolts 4, and the both sides of piston upper body 1 and piston lower body 2 all arrange two connecting bolts 4.
The profile processing order of described wrist pin bore is: the first step, is tightened by connecting bolt 4 by tightening specification, and reprocessing key seat bottom outlet is to given size; Second step, unclamps connecting bolt 4 mounting bush in wrist pin bore, then tightens connecting bolt 4 by tightening specification, molded line processed by lining.Because in motor new product development and development stage, in order to ensure piston pin boss and wrist pin compatible deformation, often piston pin boss pass line structure needs to redesign; Best piston pin boss pass line structure generally could need be determined through taking turns verification experimental verification more.But conventional piston key seat hole can only process a kind of molded line of rear acquisition, as in verification experimental verification, this is taken turns key seat pass line structure and designs unsuccessfully, then this batch of piston is all scrapped.If adopt New type detachable piston, molded line structure as early stage can not meet the demands, only need more again to process by new design molded line after resleeve part, piston still can continue installation to be tested, until filter out best key seat pass line, so this kind of New type detachable piston has the advantage of saving lead time and development cost.
New type detachable piston structure of the present invention, realizes accurate location by four locating studs 3, realizes fastening by four connecting bolts 4.If the diameter dimension of wrist pin bore or surface state occur abnormal, connecting bolt can be unclamped and change lining 6 in good condition, can machining piston key seat pass line again.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a New type detachable piston structure, it is characterized in that: comprise piston upper body, piston lower body, locating stud, connecting bolt, nut and lining, the surface of contact corresponding position of described piston upper body and piston lower body is equipped with positioning hole, inserts locating stud and position in positioning hole; Described piston upper body is fixedly connected with as a whole with piston lower body by connecting bolt, arrange nut bottom connecting bolt; Surface of contact between described piston upper body and piston lower body respectively has a curve bath, forms wrist pin bore, mounting bush in wrist pin bore after two curve bath correspondences.
2. New type detachable piston structure according to claim 1, is characterized in that: described piston upper body and piston lower body are by four locating stud location, and the both sides of piston upper body and piston lower body all arrange two for inserting the positioning hole of locating stud.
3. New type detachable piston structure according to claim 1, is characterized in that: described piston upper body and piston lower body realize fastening by four connecting bolts, and the both sides of piston upper body and piston lower body all arrange two connecting bolts.
4. New type detachable piston structure according to claim 1, is characterized in that: the profile processing order of described wrist pin bore is: the first step, is tightened by connecting bolt by tightening specification, and reprocessing wrist pin bore is to given size; Second step, unclamp connecting bolt and mounting bush in wrist pin bore, then tighten connecting bolt by tightening specification, molded line processed by lining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927294.7A CN105351106A (en) | 2015-12-11 | 2015-12-11 | Novel split-type piston structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510927294.7A CN105351106A (en) | 2015-12-11 | 2015-12-11 | Novel split-type piston structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105351106A true CN105351106A (en) | 2016-02-24 |
Family
ID=55327149
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510927294.7A Pending CN105351106A (en) | 2015-12-11 | 2015-12-11 | Novel split-type piston structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105351106A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050465A (en) * | 2016-07-04 | 2016-10-26 | 华晨汽车集团控股有限公司 | Combined type piston |
| CN109538370A (en) * | 2017-09-21 | 2019-03-29 | 强莉莉 | A kind of Multi-part piston |
| CN109931178A (en) * | 2017-12-19 | 2019-06-25 | 强莉莉 | A kind of piston and its forming method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915141A (en) * | 1973-02-15 | 1975-10-28 | Maschf Augsburg Nuernberg Ag | Built up engine piston |
| US4459900A (en) * | 1981-07-06 | 1984-07-17 | Deere & Company | Heat insulated piston assembly and method of assembling |
| JPH10292863A (en) * | 1997-04-18 | 1998-11-04 | Kubota Corp | Pin pivoting device of piston pin |
| CN1624342A (en) * | 2003-12-02 | 2005-06-08 | 曼·B及W柴油机公开股份有限公司 | Driving mechanism of a combustion engine comprising a piston and a piston rod |
| CN103410627A (en) * | 2013-07-04 | 2013-11-27 | 安徽中鼎动力有限公司 | Internal combustion engine connecting rod piston assembly |
-
2015
- 2015-12-11 CN CN201510927294.7A patent/CN105351106A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3915141A (en) * | 1973-02-15 | 1975-10-28 | Maschf Augsburg Nuernberg Ag | Built up engine piston |
| US4459900A (en) * | 1981-07-06 | 1984-07-17 | Deere & Company | Heat insulated piston assembly and method of assembling |
| JPH10292863A (en) * | 1997-04-18 | 1998-11-04 | Kubota Corp | Pin pivoting device of piston pin |
| CN1624342A (en) * | 2003-12-02 | 2005-06-08 | 曼·B及W柴油机公开股份有限公司 | Driving mechanism of a combustion engine comprising a piston and a piston rod |
| CN103410627A (en) * | 2013-07-04 | 2013-11-27 | 安徽中鼎动力有限公司 | Internal combustion engine connecting rod piston assembly |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106050465A (en) * | 2016-07-04 | 2016-10-26 | 华晨汽车集团控股有限公司 | Combined type piston |
| CN109538370A (en) * | 2017-09-21 | 2019-03-29 | 强莉莉 | A kind of Multi-part piston |
| CN109931178A (en) * | 2017-12-19 | 2019-06-25 | 强莉莉 | A kind of piston and its forming method |
| CN109931178B (en) * | 2017-12-19 | 2021-10-15 | 强莉莉 | Piston and forming method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4518059B2 (en) | Cylinder block processing jig and processing method | |
| CN105351106A (en) | Novel split-type piston structure | |
| US6435723B1 (en) | Split bearing arrangement and method of making same | |
| KR20080044407A (en) | Manufacturing method and device of insert bush and the insert bush thereof | |
| CN207508732U (en) | A kind of fixture for Milling Process | |
| CN205051483U (en) | Modular motor end cover and motor | |
| CN105196092B (en) | The clamping fixer of thin-walled tube kind part | |
| CN210461676U (en) | Repair hole structure suitable for sealing workpiece | |
| CN103527342A (en) | Automobile engine cylinder body mechanism and automobile engine with same | |
| CN214185268U (en) | Positioning structure for lathe tailstock | |
| CN108167087B (en) | Arrangement structure and installation method of heater for Stirling engine | |
| CN111774681A (en) | Workpiece machining clamp of numerical control machine tool | |
| CN207297575U (en) | A kind of automobile high-strength hexagon flange bolt | |
| JP2008082248A (en) | Cylinder block for engine | |
| CN110712072A (en) | Non-ferrous metal slide plate thickness grinding machining method | |
| CN210754926U (en) | Fixed insert type upper flat anvil device for cylinder barrel | |
| CN214723073U (en) | Automobile parts blank is polished and is used frock | |
| CN219197849U (en) | Connecting rod bolt for diesel engine | |
| CN220698906U (en) | Electrode processing tool | |
| CN216157772U (en) | Engine water jacket and engine with same | |
| CN202825109U (en) | Steering gear shell body rolling device | |
| CN213899124U (en) | Combined piston connected by screw | |
| CN113022289B (en) | Flexible engine mounting structure | |
| CN218361862U (en) | Nozzle cascade forges stabilising arrangement | |
| CN208961530U (en) | It is a kind of with positioning and six side's fixture of milling convenient for mounting and clamping |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160224 |