CN204371508U - A kind of insulating piston top - Google Patents
A kind of insulating piston top Download PDFInfo
- Publication number
- CN204371508U CN204371508U CN201420847034.XU CN201420847034U CN204371508U CN 204371508 U CN204371508 U CN 204371508U CN 201420847034 U CN201420847034 U CN 201420847034U CN 204371508 U CN204371508 U CN 204371508U
- Authority
- CN
- China
- Prior art keywords
- heat insulation
- annular groove
- piston
- piston top
- inserts
- 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 - Fee Related
Links
Landscapes
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The utility model discloses a kind of insulating piston top, comprise piston acrosome; Described piston acrosome top is provided with firing chamber; And be arranged at the chamber, inner side of both sides below firing chamber; And be arranged at the piston ring groove of the external side of piston top; It is characterized in that: offer heat insulation annular groove between the upper annular groove of described piston ring groove and lower annular groove, inside described heat insulation annular groove, crossed thermal-protective coating; Heat insulation inserts is welded with inside described heat insulation annular groove; Described heat insulation inserts outer surface and piston top external surface are at grade.Insulating piston top of the present utility model, adds heat insulation annular groove together, prevents increasing of heat load with this between upper annular groove and lower annular groove, and intensity reduces; Be provided with heat insulation inserts inside heat insulation annular groove simultaneously, ensure that the intensity of its structure; Its outer surface is directly chimeric with existing counterpart; Due to the setting of heat insulation inserts, can be wider by offering between heat insulation annular groove, its Mechanical Structure Strength can be protected well.
Description
Technical field
The utility model relates to a kind of piston assembly, is specifically related to a kind of insulating piston top, belongs to diesel engine components technical field.
Background technique
Diesel engine is a kind of common dynamic power machine, it is the main equipment of beeliner and boats and ships, and piston is skeleton and the core component of structure on diesel engine, it bears mechanical load and the heat load of alternation, is one of worst key components and parts of operating conditions in motor; The heat that piston head sucks distributes mainly through endless belt portion and skirt section, and the heat that endless belt portion distributes simultaneously is spread out of by the first annular groove mostly.And in general current piston is all have two road compression rings at piston crown, the distance of first ring and second gas ring is less, and often also passed on second gas ring by heat, cooling-down effect is bad simultaneously; Chinese Patent Application No.: 201210481398.6, disclose a kind of thin walled structures piston top, comprise firing chamber, chamber, inner side, piston ring groove and heat insulation annular groove, described firing chamber is arranged on the top of piston top, chamber, inner side is arranged on the inner side of piston top, piston ring groove and heat insulation annular groove are separately positioned on the outer cylinder surface of piston top, and described heat insulation annular groove is arranged between piston ring groove; Thin walled structures piston top of the present invention, the structure of piston top is thin walled structures, and the thickness on top is 10.2mm, and the heat insulation annular groove having a 3mm wide in the middle of the piston ring groove of piston top, can reduce the conduction of heat; Although technique scheme is relatively good on effect of heat insulation; But poor on its Mechanical Structure Strength, easily damage.
Model utility content
(1) technical problem that will solve
For solving the problem, the utility model proposes a kind of insulating piston top, adding heat insulation annular groove together, prevent increasing of heat load with this between upper annular groove and lower annular groove, intensity reduces; Be provided with heat insulation inserts inside heat insulation annular groove simultaneously, ensure that the intensity of its structure.
(2) technological scheme
Insulating piston top of the present utility model, comprises piston acrosome; Described piston acrosome top is provided with firing chamber; And be arranged at the chamber, inner side of both sides below firing chamber; And be arranged at the piston ring groove of the external side of piston top; It is characterized in that: offer heat insulation annular groove between the upper annular groove of described piston ring groove and lower annular groove, inside described heat insulation annular groove, crossed thermal-protective coating; Heat insulation inserts is welded with inside described heat insulation annular groove; Described heat insulation inserts outer surface and piston top external surface are at grade.
Further, described heat insulation inserts outer surface is polishing structure.
Further, described heat insulation inserts the upper side and lower side is lined with one deck heat insulating mattress.
Further, described heat insulation inserts can be made up of glass fibre reinforced plastics upper and lower end engaged column block; Described slug welds with inside heat insulation annular groove.
(3) beneficial effect
Compared with prior art, insulating piston top of the present utility model, adds heat insulation annular groove together, prevents increasing of heat load with this between upper annular groove and lower annular groove, and intensity reduces; Be provided with heat insulation inserts inside heat insulation annular groove simultaneously, ensure that the intensity of its structure; Its outer surface is directly chimeric with existing counterpart; Due to the setting of heat insulation inserts, can be wider by offering between heat insulation annular groove, its Mechanical Structure Strength can be protected well.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
A kind of insulating piston top as shown in Figure 1, comprises piston acrosome; Described piston acrosome top is provided with firing chamber 1; And be arranged at the chamber, inner side 2 of both sides below firing chamber; And be arranged at the piston ring groove 3 of the external side of piston top; Offer heat insulation annular groove 4 between the upper annular groove of described piston ring groove 3 and lower annular groove, inside described heat insulation annular groove 4, cross thermal-protective coating; Heat insulation inserts 5 is welded with inside described heat insulation annular groove 4; Described heat insulation inserts 5 outer surface and piston top external surface are at grade.
Wherein, described heat insulation inserts 5 outer surface is polishing structure; Described heat insulation inserts 5 the upper side and lower side is lined with one deck heat insulating mattress; Described heat insulation inserts 5 can be made up of glass fibre reinforced plastics upper and lower end engaged column block; Described slug welds with inside heat insulation annular groove.
The heat insulation annular groove of the piston top of the technical program, can reduce the conduction of heat, and piston top is heat-resisting top, meets emission request, and thermal fatigue life can meet diesel engine of locomotive and normally work, and ensure that its obstruction not being subject to structural pressure restriction and heat conduction.
Embodiment recited above is described preferred implementation of the present utility model, not limits design of the present utility model and scope.Under the prerequisite not departing from the utility model design concept; the various modification that related domain ordinary person makes the technical solution of the utility model and improvement; protection domain of the present utility model all should be dropped into; the technology contents of the utility model request protection, all records in detail in the claims.
Claims (4)
1. an insulating piston top, is characterized in that: comprise piston acrosome; Described piston acrosome top is provided with firing chamber; And be arranged at the chamber, inner side of both sides below firing chamber; And be arranged at the piston ring groove of the external side of piston top; It is characterized in that: offer heat insulation annular groove between the upper annular groove of described piston ring groove and lower annular groove, inside described heat insulation annular groove, crossed thermal-protective coating; Heat insulation inserts is welded with inside described heat insulation annular groove; Described heat insulation inserts outer surface and piston top external surface are at grade.
2. insulating piston top according to claim 1, is characterized in that: described heat insulation inserts outer surface is polishing structure.
3. insulating piston top according to claim 1, is characterized in that: described heat insulation inserts the upper side and lower side is lined with one deck heat insulating mattress.
4. insulating piston top according to claim 1, is characterized in that: described heat insulation inserts can be made up of glass fibre reinforced plastics upper and lower end engaged column block; Described slug welds with inside heat insulation annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847034.XU CN204371508U (en) | 2014-12-26 | 2014-12-26 | A kind of insulating piston top |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420847034.XU CN204371508U (en) | 2014-12-26 | 2014-12-26 | A kind of insulating piston top |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204371508U true CN204371508U (en) | 2015-06-03 |
Family
ID=53327735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420847034.XU Expired - Fee Related CN204371508U (en) | 2014-12-26 | 2014-12-26 | A kind of insulating piston top |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204371508U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014677A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
| CN111622859A (en) * | 2019-02-28 | 2020-09-04 | 强莉莉 | Heat-insulation section steel piston and forming method |
-
2014
- 2014-12-26 CN CN201420847034.XU patent/CN204371508U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014677A (en) * | 2016-08-04 | 2016-10-12 | 广西玉柴机器股份有限公司 | Piston of engine |
| CN111622859A (en) * | 2019-02-28 | 2020-09-04 | 强莉莉 | Heat-insulation section steel piston and forming method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2015180003A1 (en) | Threaded welding type integral forged steel piston | |
| CN204371508U (en) | A kind of insulating piston top | |
| CN204402689U (en) | The valve mechanism cover cap assembly of accessible site high pressure oil rail | |
| CN201531326U (en) | Engine cylinder head gasket | |
| CN204419382U (en) | A kind of overall forging steel piston | |
| CN204163872U (en) | A kind of porous oil pocket all-steel piston | |
| CN204163871U (en) | The strong cooling steel piston of a kind of gas engine | |
| CN206299470U (en) | A kind of friction welding piston | |
| CN206607328U (en) | A kind of piston anodic oxidation equipment feed arrangement | |
| CN203285561U (en) | Engine piston | |
| CN203201637U (en) | Novel cooling structure of air cylinder sleeve of middle-speed and high-power diesel engine | |
| CN203161370U (en) | Friction welding forged steel piston with optimized structure | |
| CN204552970U (en) | piston of natural gas engine | |
| CN204186673U (en) | A kind of oil cylinder with active connection | |
| CN208702559U (en) | A kind of vehicle piston of good airproof performance | |
| CN202250452U (en) | Double-trapezoid-shaped piston with inlaid ring | |
| CN202228206U (en) | Engine cylinder cover | |
| CN101929404A (en) | Piston with steel top and aluminum skirt for 230SG type gas engine | |
| CN205089480U (en) | Automobile engine exhaust manifold is sealed to be filled up | |
| CN202266344U (en) | Engine piston | |
| CN209163951U (en) | Engine and its all-steel piston | |
| CN202360237U (en) | Piston with cooling oil path | |
| CN204041264U (en) | A kind of piston of natural gas engine | |
| CN204253356U (en) | New-type mortar pump liner | |
| CN205908384U (en) | Cylinder head gasket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 Termination date: 20171226 |