CN2134544Y

CN2134544Y - Piston group

Info

Publication number: CN2134544Y
Application number: CN 92204718
Authority: CN
Inventors: 刘新杰
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-19
Filing date: 1992-03-19
Publication date: 1993-05-26
Anticipated expiration: 2002-03-19

Abstract

The utility model relates to a piston group. The piston group is composed of a flat ring, an air ring, an expand spring, a flat cover ring, a steel belt ring, an oil ring, and a piston. 2-5 parts (excluding the piston) are arranged inside each piston ring groove. The piston group has good sealing performance, low working noise, low air pollution, low manufacture cost, and long service life. The piston group is used on a gasoline engine, a diesel engine, an air compressor, a chiller, a vacuum pump, and hydraulic equipment.

Description

Piston group

The utility model relates to a kind of piston set, mainly is piston ring, belongs to mechanical component.Be used for petrol engine, diesel engine, air compressor, vacuum pump and hydraulic equipment, be mainly used in conventional engine.

The existing actual piston ring that uses mainly is a piston ring of adorning a rectangular cross-section in the piston ring groove.At notification number is in the patent documentation of CN2042537U, discloses the long-lived seal ring of a kind of totally enclosed type.Its objective is the working life and the sealing effect that improve piston apparatus.

Its formation is to adorn the piston ring of two band frustums in the piston ring groove and adorn three piston ring,

One of two rings be convex cone ring 28, and another is that concave cone ring 29, three one of encircles is convex cone ring 30, two be concave cone ring 31, three be outer shroud 32, see Figure 16 and 15.Its deficiency is: sealing effect is still relatively poor.

The purpose of this utility model is to overcome above-mentioned deficiency of the prior art and a kind of piston set is provided.

The purpose of this utility model can reach by following measure: the utility model is made up of rise spring (establish in the interface overlap joint rod), flat bezel ring,, steel band ring, oil ring and piston of flat ring, compression ring, spirality elasticity, above-mentioned 2～5 of parts (except the piston) in addition are housed, to reach the purpose of good seal in each piston ring groove.

The drawing of accompanying drawing is described as follows:

Fig. 1 is an assembling schematic representation of the present utility model, expression embodiment 1 and embodiment's 2 assembling situation on the figure.

Fig. 4 represents embodiment 5 of the present utility model.

Fig. 5 represents embodiment 6 of the present utility model.

Fig. 6 represents embodiment 7 of the present utility model.

Fig. 7 represents embodiment 8 of the present utility model.

Fig. 8 represents embodiment 9 of the present utility model.

Fig. 9 is an oil ring.

Figure 10 is the spirality elasticity spring that rises.

Figure 11 is the compression ring figure of installing catch.

Figure 12 is the local figure of the top view of Figure 11.

Figure 13 is the stereogram of catch.

Figure 14 represents embodiment 10 of the present utility model.

Figure 15 is a prior art embodiments.

Figure 16 is another embodiment of prior art.

The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.But the utility model is not limited to these enforcement states.Referring to Fig. 1～Figure 14, the utility model is by flat ring 1, compression ring (2,4,5,7,9,10,11,12,15,22 and 23,26), the spirality elasticity spring 3(band overlap joint rod 21 that rises), flat bezel ring, 6, steel band ring 8 and 24,

oil ring

13 and 14 and packed-piston 17 form.The opening of each road ring (flat ring, compression ring, flat bezel ring,, steel band ring and oil ring) is flat mouthful, and the opening of each road ring staggered mutually when the multiple tracks ring was loaded in the same piston ring groove.The material of flat ring is metal (steel, copper and aluminium an etc.) thin plate, and compression ring and oil ring are alloy cast iron and chromium plating alloy cast iron etc.The thickness of flat bezel ring,, flat ring and steel band ring is answered 〉=0.5 millimeter.Gap between piston ring upper and lower end face and the piston ring groove respective face is called the crack, limit, and the gap in piston ring excircle face and the cylinder between the circle is called sideshake (comprise and lose circle gap and oval gap etc.).

Embodiment 1, sees shown in the last figure of Fig. 1, is made up of four road rings.From top to bottom, first road is a flat ring 1, second road is a compression ring 2 with the level, the inboard cuts one jiao, the 3rd road still is a compression ring 2, is the symmetry installing with the second road ring, respectively cuts in one jiao of formed chamber in compression ring inboard, the second and the 3rd road, installing spirality elasticity spring 3, the four roads that rise is flat ring 1.During work, owing to do not have crack, limit and sideshake, perhaps crack, limit and sideshake are very little, can obtain good sealing effect, after work a period of time, in the time of bigger gap may occurring because of wearing and tearing, the spring 3 outside elastic force that rise upwards, outwards and downwards produce thrust, to eliminate crack, top, sideshake and following crack, to reach hermetic purpose.The spring 3 that rises is seen Figure 10, in the inside of its two ends jointing, and little curved metallic bone rod 21 of plug-in mounting.Present embodiment is applicable to each road compression.

Embodiment 2, see the lower piston annular groove portion of Fig. 1, are made up of three road rings.First road is that compression ring 4, the second roads are compression ring 5 with the level, and cylindrical is tapered, and the 3rd road is a flat ring 1, and the spring 3 that rises is loaded on the inboard between the compression ring 4,5.Its sealing mechanism is identical with embodiment 1 with effect.Present embodiment is applicable to each road compression.

Embodiment 3, see Fig. 2, are made up of three road rings.First road is flat bezel ring, 6, second road is a compression ring 7, sectional shape is rectangle or taper (not representing taper on the figure), steel band ring 8 is established in compression ring 7 inboards, steel band ring 8 can be the domain, semi-ring or one section ring sealing the compression ring opening, the height of steel band ring 8 equates with the height of compression ring 7, establishes the spring 3 that rises in the steel band ring, and flat bezel ring, 6 should be able to cover the steel band ring 8 and the spring 3 that rises.Present embodiment is hermetic seal, is applicable to each road compression.

Embodiment 4, see Fig. 3, are made up of two road rings.The first road ring is a compression ring 9 with the level, and the angle that its inboard cut is different with the part of Fig. 12,4 and 5, and should be able to the single compression ring of the spring ejection of singly the rising (see figure 3) that adapts, second road is a flat ring 1, establishes the spring 3 that rises in the compression ring 9.Present embodiment is simple in structure, is applicable to each road compression.

Embodiment 5, see Fig. 4, are made up of four road rings.The first and the 4th road is a flat ring 1, second road is to be the compression ring 10 of concave cone under the last band step, the 3rd road is that the limit is to be convex cone and following compression ring 11 with the level in the taper, part 11 lacks than part 10 contact cylinder internal surface areas, so part 11 quick abrasions are so that along with the wearing and tearing of part 11 are outwards upwards released part 10 at any time, to eliminate crack, limit and sideshake, or crack, limit and sideshake reduced to minimum, thereby obtain good sealing effect.Present embodiment is applicable to each road compression.

Embodiment 6, see Fig. 5, are made up of three road rings.First road is a flat ring 1, second road is to be the compression ring 10 of concave cone under the last band step, the 3rd road is outer for being the compression ring 12 of convex cone on the back taper, the cylindrical of compression ring 12 is littler than the cylindrical of the first and second road rings, like this, machining guarantees size requirement easily, and sealing mechanism and effect are applicable to each road compression ring with embodiment 5.

Embodiment 7, see Fig. 6, are made up of three road rings.First road is an oil ring, does not have oil return through-hole on the piston, and the circular groove of oil ring cylindrical is rectangle, trapezoidal, half moon or triangle, also can not establish circular groove, and second road is that compression ring with the level 15, the three roads are flat ring 1.The sealing mechanism of present embodiment is different with aforementioned six kinds mechanical seal, is oil film seal.Present embodiment can not use separately, must share with aforesaid any compression ring, is placed in the following annular groove of top compression ring groove.

Embodiment 8, see Fig. 7, are made up of two road rings.First road is a scraper ring 14 with the level, and spill port is arranged on the piston, and second road is a flat ring 1.Present embodiment can only be done oil ring and use.

Embodiment 9, see Fig. 8, are the improvement to piston.Consider the easiest wearing and tearing in piston 18 skirt sections (perpendicular to the position of piston pin hole 20), thereby process the oil groove of different shape in couples at this position, present embodiment is two semi-enclosed " king " font oil grooves 16, and in the oil groove of top, process a plurality of through holes 18, so that the lubricant oil that splashes on the casing wall from crankcase feeds internal piston and returns crankcase by hole 18.The effect of oil groove 16 and through hole 18: so that the lubricant oil that splashes on the casing wall from crankcase feeds internal piston and returns crankcase by hole 18; When starting cold, the lubricant oil that solidifies in the crankcase is splashed into piston cavity, and flows into oil groove 16 from oilhole 18, with lube pistons surface and cylinder and piston ring, causes embracing piston with the dry friction of avoiding above-mentioned position; When hot car overload operation, can avoid causing embracing a piston because of sideshake is too small; When the long-pending shortage of oil of oil groove, the lubricant oil into piston cavity of splashing can pass through oilhole 18 and be replenished.Semi-enclosed oil groove can play even distribution lubricant oil and store the effect of lubricant oil.The common abrasion condition of cylinder is up big and down small, is inverted cone, and big perpendicular to position (about the title) wearing and tearing of wrist pin, front and back are little, are oval.The common abrasion condition of piston is that the skirt section is big, and the top is little, and the wearing and tearing in skirt section are big about being, front and back are little.The effect of " king " font oil groove is to improve the greasy property at this place, alleviates wearing and tearing, reduces noise, fills sideshake, replaces scraper ring, reduces the piston radial swing and improves the purpose in working life thereby reach.The noise of indication comprises the metal knock that the oil film friction substitutes the part metals friction and alleviates piston percussion cylinder wall.

Embodiment 10, see Figure 14 (the 1st page), are made up of twice compression ring, steel band ring and the spring that rises.First road is that compression ring 22, the second roads are the tapered compression ring in outer garden 23, and steel band ring 24 can be the domain, semi-ring or the one section ring that seals up the second road compression ring opening.Sealing mechanism and effect and embodiment 3(Fig. 2) identical.

Embodiment 11, see Figure 11,12 and 13, are made up of compression ring 26 and catch 25, have groove 27 on the compression ring 26, the usefulness of the catch 25 that seals for packing into.Should see Figure 12 with groove that catch is housed down during use, be about to groove 27 lean against piston ring groove below so that good seal.As not establishing catch, when the compression ring of two mismatch installations places in the piston ring groove together, in the process of piston up-down, might cause the compression ring opening to overlap the generation counterpart because of the play of compression ring circumferencial direction and cause poorly sealed.Even and present embodiment generation counterpart still can keep good seal.It is also easy to install.

The utility model contrast prior art has following advantage: good seal performance, and operating noise is low, and atmospheric pollution is few, low cost of manufacture, long service life.

Claims

1, a kind of piston set, comprise rise spring and oil ring, it is characterized in that, also comprise flat ring, compression ring (piece number is 2,4,5,7,9,10,11,12,15,22 and 23,26), flat bezel ring,, steel band ring and piston 17, above-mentioned 2～5 of parts (except the piston) in addition are housed in each piston ring groove, and the opening of each road ring staggers mutually.

2, piston set according to claim 1, it is characterized in that, overlapping the spring that rises by four road rings and forms, the first and the 4th road is a flat ring, the second and the 3rd road is the band step compression ring that is the symmetry installing, two, cavity installing the rising spring of three road rings formation, the outside elastic force of the spring that rises makes progress, outwards and downwards produces thrust, to eliminate following crack and sideshake.

3, piston set according to claim 1 is characterized in that, overlaps the spring that rises by three road rings and and forms, and first road is a compression ring, and second road is the tapered compression ring of band step cylindrical, and the 3rd road is a flat ring, and the spring that rises is loaded on the inboard between the twice compression ring.

4, piston set according to claim 1 is characterized in that, overlaps the spring that rises by three road rings and and forms, and first road is flat bezel ring,, and second road is a compression ring, and the steel band ring is established in the compression ring inboard, establishes the spring that rises in the steel band ring, and flat bezel ring, should be able to cover the steel band ring and the spring that rises.

5, piston set according to claim 1 is characterized in that, overlaps the spring that rises by two road rings and and forms, and first road is a compression ring with the level, and second road is a flat ring, establishes the spring that rises in the compression ring.

According to the described piston set of claim 1, it is characterized in that 6, be made up of four road rings, first, fourth road is a flat ring, second road is to be the compression ring of concave cone under the last band step, and the 3rd channel ratio second road contact cylinder internal surface area is little, helps eliminating crack, limit and sideshake.

7, piston set according to claim 1 is characterized in that, is made up of three road rings, first road is a flat ring, second road is to be under the last band step that the compression ring of concave cone, the 3rd road are outer for being the compression ring of convex cone on the back taper, and the cylindrical in the 3rd channel ratio first and second roads is little.

8, piston set according to claim 1 is characterized in that, is made up of three road rings, and first road is an oil ring, and second road is band step compression ring, and the 3rd road is a flat ring.

9, piston set according to claim 1 is characterized in that, is made up of oil ring with the level and flat ring.

10, piston set according to claim 1 is characterized in that, processes oil groove in couples in the piston skirt.

11, piston set according to claim 1 is characterized in that, is made up of the three road rings and the spring that rises, and first road is a compression ring, and second road is the tapered compression ring in outer garden, and the steel band ring can be the domain, semi-ring or one section ring.

12, piston set according to claim 1 is characterized in that, is made up of compression ring and catch, and the groove for the catch of packing into is arranged on the compression ring.