CN1804385B - Combined piston - Google Patents
Combined piston Download PDFInfo
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- CN1804385B CN1804385B CN 200610031160 CN200610031160A CN1804385B CN 1804385 B CN1804385 B CN 1804385B CN 200610031160 CN200610031160 CN 200610031160 CN 200610031160 A CN200610031160 A CN 200610031160A CN 1804385 B CN1804385 B CN 1804385B
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- piston
- ring
- collar extension
- annular groove
- cylinder
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- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention relates to a integrated piston, whose upper and lower annular grooves have single piston rings; the middle annular groove has a single piston ring or multi-piston ring; the piston rings are distantly arranged with a certain angle inside the piston annular groove while all the piston rings are depart from the axes of said piston pin; and the annular groove has positioning device. By aforementioned arrangement, the invention can solve the defects of present piston whose piston rings are centralized with unreasonably arranged positioning device, gas leakage and fire leakage. It has simple structure, reliable positioning, better air tightness, long service life, and lower oil consumption. It can apply variable diesel engines, internal-combustion engines, fans and air compressors.
Description
Technical field
The present invention relates to a kind of engine piston, particularly a kind of built-up piston.
Background technique
The piston of existing internal-combustion engine; The basic monocycle list groove structure that adopts is promptly only placed a piston ring in each road piston ring groove and the piston collar extension does not add control, and such piston is in use because the wearing and tearing of piston ring and engine air casing wall; Piston collar extension gap can increase gradually; And can make because of the high speed to-and-fro motion of piston in the cylinder to produce high pressure draught and to drive air-flow and impact, thereby cause all piston ring collar extensions to concentrate on the same area or the line piston of this moment to the piston collar extension; Wearing and tearing can appear on zone that piston-cylinder inwall piston ring collar extension is concentrated or line; Casing wall can form a groove when serious, causes blow-by of piston, scurries oil, and the cylinder wall distortion is scrapped.So the piston structure of existing internal-combustion engine has influenced the power output of motor because of the oil that leaks gas, scurries, and has caused energy waste and environmental pollution.
In view of the above-mentioned disadvantage of internal-combustion engine, people attempt to seek a kind of effective solution.As Chinese utility model patent notice of authorization number for " piston that has the permanent close piston ring in two compound location " of CN2419421 provide a kind of be employed in to be equipped with in the compression in one encircle two outer shrouds on the cylindrical in the ring and upper and lower being contained in of being stacked together; The inwall of interior ring has position decided at the higher level but not officially announced pawl, out of line upper and lower two the outside fix pawls of own centre line on the outer wall of interior ring; The interior positioning pawl of interior ring is contained in the positioning hole at the bottom of the compression, and the opening inwall of upper and lower two outer shrouds all is processed with groove, on the upper and lower positioning pawl that encircles in its groove is installed on respectively; There is complex structure in this solution, easy formation the in the gap between easy care, the dicyclo do not collaborated, and manufacturing process is complicated, deficiencys such as part processing degree of difficulty.The solution that and for example Chinese utility model patent notice of authorization number provides for " piston ring and the piston in combination positioning device " of CN2675884Y is that the groove bottom at the compression of piston is inlaid with positioning block; The height of positioning block is half the smaller or equal to the compression degree of depth; Have groove on the inside cylindrical walls of gap-clearance of piston rings place, its groove and positioning block Spielpassung when the opening closure of piston ring; This solution is because of adopting the box-shaped positioning block; The stress at the place, right angle of positioning block is too concentrated; Be prone to cause positioning block or piston ring when piston assembling and operation, to fracture, docking can cause piston ring and the bigger wearing and tearing of cylinder, causes poor air-tightness even produces serious problems such as consequence.Chinese for another example utility model patent notice of authorization number piston for being provided " dicyclo merges, a mouthful utilization structure piston staggers " of CN2615439Y; All stagger and respectively establish a piston locating stud in the upper edge of its each road piston ring groove and lower edge; Offer a locating stud breach on the end face of each piston ring, the end face that above ring is offered the locating stud breach in each road piston ring groove encircle up and down the end face of offering the locating stud breach to two of held respectively by piston ring groove on the piston ring of the piston ring locating stud location that is provided with, lower edge.Though this technological scheme has solved the gas leakage problem in form, because four road piston rings material, performance, function, the effect separately of piston is all inequality, as above apical ring; This ring generally is commonly called as " fire ring "; It has high temperature resistant with prevent that fire from scurrying with the following of gas, and ring bottom is " oil ring ", the effect of this ring is fuel feeding, oil storage and oil resistance; Ring in the middle of being positioned at then is " compression ring "; Their material, performance are identical, and it is high temperature resistant and wear-resisting that its hardness, rigidity can not show a candle to " fire ring " topmost, and acting on also mainly is gas shutoff; And the merging in twos that four road rings are general of this technological scheme; Assembling the back like this because two piston ring materials, performance, functions merging all have nothing in common with each other, is the chrome-faced ring through chromium plating and the making of fine finishing treatment process like " fire ring " topmost, when the maintenance assembling; Refer in particular to Dingan County and be contained in piston head; Be decided to be top compression ring, if this ring blindly loads in mixture with other compression rings, also dress uses, and has then thickeied the thickness of this chrome-faced ring; Hindered chrome-faced ring thermal diffusivity alone on the contrary, unique functional performance; And " oil ring " structure is special, and this road ring is combined into oil supply system by outer oil ring, interior oil ring, and the steel wire of interior oil ring is provided with the oil storage spring; Outer oil ring is provided with the fuel feeding window, and with compression ring and oil ring and put and use and do not establish span, its result can cause oil ring to increase divider wall one as by force; The oil duct of fuel feeding is blocked, and makes lubricated can't carrying out smoothly in the cylinder, especially at high temperature, when running up; Machine oil yardstick few (when machine oil is not enough) up to standard, the easiest acceleration parts premature wear, the mechanical failure that very causes scuffing of cylinder bore, dead cylinder takes place; Therefore, effect alone of " oil ring " structure itself and function are that other ring is irreplaceable; So indiscriminate blindness merges, and must cause the quickening of component wear, the frequent generation of performance decrease and fault.In addition, the locating stud of this scheme is arranged on the edge of piston ring groove, because it is limited to connect area, in the environment of piston high temperature, high-speed motion, be easy to produce loosening even fracture, and the edge semicircle orifice of machining piston ring need disposes frock.So the technological scheme of this model utility also is difficult to satisfy fully the tightness requirement of engine piston.
Summary of the invention
To above-mentioned situation, the purpose of this invention is to provide a kind of simple and reasonable for structurely, tightness is good, solid and reliable, the built-up piston that long service life, energy saving and blowdown flow rate are few.
To achieve these goals; A kind of built-up piston; Comprise piston ring groove and the piston ring and the piston collar extension that are arranged in the annular groove, wherein in the annular groove up and down of piston single piston ring is set, single piston ring or many piston rings are set in the middle annular groove; The piston collar extension staggers each other by several angle and is arranged in the piston ring groove and the piston collar extension all departs from the setting of piston pin hole axis several angle, sets a position device in the annular groove of piston collar extension.
For implementation structure optimization, its further step is:
Many piston rings are set in the middle annular groove, and its piston ring is two rings and puts or three rings and placing in the same piston ring groove.
Two rings and the piston collar extension of putting all stagger by 180 ° of angles and mutual intersection in pairs in regular turn and are arranged in the piston ring groove, and wherein, initial piston collar extension is to depart from the setting of piston pin hole axis 45 degree.
Three rings and the piston collar extension of putting stagger each other by 72 ° of angles in regular turn and are arranged in the piston ring groove, and wherein, initial piston collar extension is to depart from 18 ° in piston pin hole axis or 54 ° of angle settings.
Single piston ring is set in the middle annular groove of piston, and the piston collar extension in this annular groove is depart from 90 ° of angle settings of piston pin hole axis.
Piston collar extension inboard is provided with the locating notch adaptive with positioning device.
Locating notch is a triangle, and this leg-of-mutton height is 2/5ths of a piston ring width.
Positioning device is the triangle locating column, and this triangle locating column is provided with cylinder type or square column type.
Cylinder type comprises axis of a cylinder, post shoulder, capital, and the diameter of its post shoulder equals the thickness of piston ring, and rising of capital is no more than 2/5ths of the annular groove degree of depth, which is provided with opening slot.
The square column type comprises axis of a cylinder, square shoulder, Fang Ding, and the length of side of square shoulder equals the thickness of piston ring, and rising of top, side is no more than 2/5ths of the annular groove degree of depth, which is provided with opening slot.
The present invention adopts the compression ring of same function, identical material and places in the same annular groove and technological scheme that collar extension staggers and avoids that piston collar extension crucial relatively position in piston pin hole place is arranged and set the position device in the piston collar extension; Solved in the existing piston that the piston collar extension is concentrated and piston ring merges unreasonable and positioning device is provided with unscientific defective; Solved preferably piston ring gas leakage, scurry oil, leak fiery problem, make the present invention compare breakthrough than existing technology with following structure and performance:
(1), with the ring of same function, identical material, identical performance, identical wearing and tearing, same coefficient of thermal expansion in the annular groove in the middle of the piston and place a groove and take the collar extension setting of staggering.When Piston Compression was done work, pressurized gas leaked downwards from last collar extension in the cylinder, and at this moment, and the gas that the following ring of putting leaks last collar extension downwards blocks, and and the following gas leakage of the following collar extension of putting, by and put go up to encircle and blocked.So, formed dicyclo or three ring interactions, complement one another; All linked with one another, anti-blocking layer by layer, as having increased the integral seamless ring of ring thickness together; Can obviously strengthen the air-tightness of Piston Compression, reduce oil consumption, reduce the carbon deposit of cylinder interior; Reduced the mutual restriction that merging caused, influenced disadvantages such as function because of the ring of unlike material, different effects.
(2), be the distance of having elongated between oil ring and the compression ring with the compression ring in the middle of the piston and another characteristics of putting use; Thereby increased machine oil to the space that cylinder inner wall washes away and the lubricated height of cylinder inner wall machine oil; The effectively lubricating area of cylinder inner wall is significantly increased; Unnecessary machine oil is then done shutoff by top and the compression ring put, prevents gas blowby cylinder top combustion chamber on the machine oil.So, better solve machine oil and scurried the problem that cylinder burns, realized the energy-conservation technical goal that develops simultaneously with environmental protection.
(3), the piston collar extension is staggered by several angle each other arrange and adopt the piston collar extension all to depart from the setting of piston pin hole axis several angle; Prevented that not only piston ring is concentrated because of many ring collar extensions appear in rotation; And cylinder wall, piston ring are worn and torn relatively uniformly, strengthened and prolonged the working life of piston ring cylinder.
(4), positioning device adopts the mutual adaptive setting of triangle locating column and triangle locating notch; Effective impact area that the triangular-section that locating column is hit has the square-section that is hit now obviously reduces; And the triangular-section be difficult for to produce stress and concentrates, and because the diameter of triangle locating column can keep maximum magnitude, so the soundness of the rigidity of triangle locating column, intensity, connection all is significantly increased and triangle locating column frangible not; Processing technology is simple; So adopt the triangle location can make the place, location combine better, locate the gap still less, Location accuracy is higher.
(5), positioning device is selected for use and the piston body identical materials, makes positioning device can not cause the loose or dislocation of triangle locating column because of the influence of the material coefficient of thermal expansion property difference and the temperature difference, causes damaging the piston-cylinder inwall.
(6), have simple in structurely, compact, rationally, the location is reliable, each ring wearing and tearing is average, tightness is good, mechanical failure is few, long service life, oil consumption reduction, dusty gas discharging reduce, and have refreshed the new record of safety, economy, energy-saving and environmental protection.The present invention is suitable for piston for IC engine such as the diesel engine, petrol engine of all size, type and various blower, air compressor piston.
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Description of drawings
Fig. 1 is the main TV structure schematic representation of first embodiment of the present invention.
Fig. 2 is the plan structure schematic representation of first embodiment of the present invention.
Fig. 3 dissects the expansion schematic representation for the level of aggregation of second embodiment of the present invention.
Fig. 4 is the main TV structure schematic representation of the 3rd embodiment of the present invention.
Fig. 5 is the plan structure schematic representation of the 3rd embodiment of the present invention.
Fig. 6 is in the horizontal cut-away illustration of free state for first embodiment of triangle locating column and piston collar extension.
Fig. 7 is second embodiment of triangle locating column and the in running order horizontal cut-away illustration of piston collar extension.
Fig. 8 dissects local structure for amplifying schematic representation for the level that first embodiment of triangle locating column and piston collar extension are in free state.
Fig. 9 dissects local structure for amplifying schematic representation for first embodiment of triangle locating column and the in running order level of piston collar extension.
Figure 10 is the main TV structure enlarged diagram of first embodiment of triangle locating column.
Figure 11 is the side-looking structure enlarged diagram of first embodiment of triangle locating column.
Figure 12 dissects local structure for amplifying schematic representation for the level that second embodiment of triangle locating column and piston collar extension are in free state.
Figure 13 dissects local structure for amplifying schematic representation for second embodiment of triangle locating column and the in running order level of piston collar extension.
Figure 14 is the main TV structure enlarged diagram of second embodiment of triangle locating column.
Figure 15 is the side-looking structure enlarged diagram of second embodiment of triangle locating column.
Among the figure 1, piston, 12, piston pin hole, 2, annular groove, 3, piston ring, 31, single piston ring, 32, many piston rings; 4, piston collar extension, 41, initial piston collar extension, 5, positioning device, 6, locating notch, 7, the triangle locating column; 71, cylinder type, 711, axis of a cylinder, 712, the post shoulder, 713, capital, 714, opening slot; 72, square column type, 721, axis of a cylinder, 722, square shoulder, 723, Fang Ding, 724, opening slot.
Embodiment
As shown in the figure, built-up piston comprises piston 1, annular groove 2 and is arranged on piston ring 3 and the piston collar extension 4 in the annular groove 2; In order to improve each item combination property of piston 1, and according to the heterogeneity of piston ring 3, different materials; Difference in functionality; Can not act on, single piston ring 31 is set in the annular groove up and down 2 of piston 1, single piston ring 31 or many piston rings 32 are set in the middle annular groove 2; Piston collar extension 4 staggers each other by several angle and is arranged in the piston ring groove 2 and piston collar extension 4 all departs from piston pin hole 12 axis several angle settings, sets position devices 5 in the annular groove 2 of piston collar extension 4.
Fig. 1, Fig. 2 are that the master of first embodiment looks, the plan structure schematic representation.Fig. 1 is in the middle same annular groove 2 and put the structural representation of two piston rings 3.These two piston rings 3 are same material, and identical preparation process, its function are sealing, gas shutoff.The piston collar extension 4 of two rings and 4 combinations of other piston collar extension in regular turn in pairs by 180 ° of angles and mutual intersect to stagger be arranged in the same piston ring groove 2; Wherein, Initial piston ring " oil ring " bottom is defined as the Y ring or initial piston ring " fire ring " topmost is defined as the H ring; Middle piston ring " compression ring " is defined as the Q ring, and the piston collar extension 4 of Y ring or H ring is to depart from piston pin hole 12 axis 45 degree settings, and they are formed two couples of Y-Q, Q-H in regular turn; Every pair be one group by 180 ° of angle, intersect the arrangement of staggering each other between group and the group.During arrangement; Arrange from bottom to top, ordering is that first piston collar extension 4 with " oil ring " Y ring departs from piston pin hole 12 axis 45 degree settings, and it is right again the Q ring to be formed Y-Q by 180 ° of angle on Y ring opposite; It is right to form Q-H by another Q ring and H ring then; This Q-H pair with Y-Q to intersect 90 ° of angle at Y-Q to top, make four road piston collar extensions 4 in the same position of piston, not have collar extension to repeat, reach the stronger hermetically sealed effect of realization.Otherwise, also can make initial ring and depart from piston pin hole 12 axis 45 degree and begin to arrange from H ring topmost.
Fig. 3 dissects the expansion schematic representation for the level of aggregation of second embodiment of the present invention.This mode of execution is with three same materials; Identical preparation process; The Q of identical function ring is also put and is intersected the arrangement of staggering each other; In regular turn by 72 ° of angles and stagger each other and be arranged in the same piston ring groove 2, wherein, initial piston collar extension 41 is to depart from 18 ° or 54 ° angle settings of piston pin hole 12 axis to the piston collar extension 4 of three rings with other piston collar extension 4 combinations.Their order is: Y-Q is right to, Q-H to, Q-Q to, Q-Q, and the Y ring or the H ring of initial piston collar extension 41 are to depart from 18 ° or 54 ° angle settings of piston pin hole 12 axis.Three rings and put and the sealing effect that is arranged in same piston 1 annular groove 2 of staggering each other better, being equivalent to has increased by two times with the thickness of single piston ring 31.This second embodiment is suitable for the motor of special construction.
Fig. 4, Fig. 5 are that the master of the 3rd embodiment looks, the plan structure schematic representation.This mode of execution is that the i.e. Q ring of single piston ring 31 is set in the middle annular groove 2 of piston 1; The piston collar extension 4 of this Q ring is to depart from 90 ° of angle settings of piston pin hole 12 axis; Single piston ring 31 is set, also can be with these single piston ring 31 thickenings strengthening its air-tightness.
Referring to Fig. 6, Fig. 7; Piston collar extension 4 inboards are provided with the locating notch 6 adaptive with positioning device 5; In order to eliminate the gap of 5 of piston collar extension 4 and positioning devices; Improve locating accuracy and reliability and intensity, shock-resistant etc., locating notch 6 and positioning device 5 adopt leg-of-mutton locating notch 6 and triangle locating column 7 adaptive, the height of this triangle locating notch 6 be piston ring 3 wide 2/5ths.First embodiment of triangle locating column 7 is a cylinder type 71; Second embodiment is square column type 72.In order to make positioning device 5 can not cause the loose or dislocation of triangle locating column 7 because of the influence of the material coefficient of thermal expansion property difference and the temperature difference, cause damaging piston 1 cylinder inner wall, positioning device 5 is selected for use with piston 1 body identical materials and is made.
Shown in Fig. 8-15; Cylinder type 71 comprises axis of a cylinder 711, post shoulder 712, capital 713; Capital 713 is a triangle, is provided with the special construction that encircles to Y and the U type opening slot 714 that is provided with in capital 713 leg-of-mutton Vertical direction, the size configure of the oil storage Spring Steel Wire in the length of U type opening slot 714 and wide can the ring according to various Y; The post shoulder of cylinder type 71 is a cylinder table top; During installation, utilize the cylinder table top of post shoulder can realize quick assembling, and the cylinder table top can make the bigger impact force of triangle locating column 7 tolerances.Square column type 72 comprises axis of a cylinder 721, square shoulder 722, top, side 723; The length of side of square shoulder 722 equals the thickness of piston ring 3; Rising of top, side 723 is no more than 2/5ths of annular groove 2 degree of depth; 723 leg-of-mutton Vertical direction are provided with the special construction that encircles to Y and the U type opening slot 724 that is provided with equally on the top, side, the length of U type opening slot 724 and wide can passing through with the steel wire that makes things convenient for the oil storage spring according to the size configure of the oil storage Spring Steel Wire in the various Y rings.
Below only be preferred embodiment of the present invention, according to above-mentioned design of the present invention, those skilled in the art also can make various modifications and conversion to this.For example, the change of piston collar extension position is as implementing the change of piston collar extension, the structure conversion of positioning device and the structural change that encircles more and put or the like because of the special construction of Y ring.Yet similar this conversion all belongs to essence of the present invention with revising.
Claims (1)
1. built-up piston; It is characterized in that it comprises piston (1), annular groove (2) and is arranged on piston ring (3) and the piston collar extension (4) in the annular groove (2); In the middle annular groove (2) of its piston (1) same material is set; Identical preparation process, many piston rings (32) of identical function and piston collar extension (4) stagger each other by 72 ° of angles in regular turn and are arranged in the piston ring groove (2), wherein; Initial piston collar extension (41) is to depart from 18 ° or 54 ° angle settings of piston pin hole (12) axis; Be equipped with positioning device (5) in the annular groove (2) of piston collar extension (4) and initial piston collar extension (41), this positioning device (5) is adaptive with the triangle locating notch (6) that is arranged on piston collar extension (4) inboard, and the height of this triangle locating notch (6) is 2/5ths of a piston ring width; Said positioning device (5) is triangle locating column (7), and this triangle locating column (7) is provided with cylinder type (71) or square column type (72), and it is selected for use and the manufacturing of piston body identical materials; Said cylinder type (71) comprises axis of a cylinder (711), post shoulder (712), capital (713), and the diameter of its post shoulder (712) equals the thickness of piston ring (3), and rising of said capital (713) is no more than 2/5ths of annular groove (2) degree of depth, which is provided with U type opening slot (714); Said square column type (72) comprises axis of a cylinder (721), square shoulder (722), top, side (723); The length of side of said square shoulder (722) equals the thickness of piston ring (3); Rising of (723) of said side top is no more than 2/5ths of annular groove (2) degree of depth, which is provided with U type opening slot (724).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610031160 CN1804385B (en) | 2006-01-17 | 2006-01-17 | Combined piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610031160 CN1804385B (en) | 2006-01-17 | 2006-01-17 | Combined piston |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1804385A CN1804385A (en) | 2006-07-19 |
| CN1804385B true CN1804385B (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610031160 Expired - Fee Related CN1804385B (en) | 2006-01-17 | 2006-01-17 | Combined piston |
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| Country | Link |
|---|---|
| CN (1) | CN1804385B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209123U (en) * | 1987-06-10 | 1988-07-20 | 周殿君 | Air-ring single-groove piston with double piston ring |
| CN2171683Y (en) * | 1993-06-09 | 1994-07-13 | 杨杰民 | Whole-sealed piston ring |
| CN2521405Y (en) * | 2002-01-25 | 2002-11-20 | 艾合旦木·塞都拉 | Energy-saving and work efficiency-improving sealing device |
-
2006
- 2006-01-17 CN CN 200610031160 patent/CN1804385B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN87209123U (en) * | 1987-06-10 | 1988-07-20 | 周殿君 | Air-ring single-groove piston with double piston ring |
| CN2171683Y (en) * | 1993-06-09 | 1994-07-13 | 杨杰民 | Whole-sealed piston ring |
| CN2521405Y (en) * | 2002-01-25 | 2002-11-20 | 艾合旦木·塞都拉 | Energy-saving and work efficiency-improving sealing device |
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| Publication number | Publication date |
|---|---|
| CN1804385A (en) | 2006-07-19 |
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