CN2550518Y - Automatic sealing piston ring - Google Patents

Abstract

The utility model relates to an automatic sealing piston ring, comprising a piston ring (2), a angle plug (3) and a elastic sheet steel (4), wherein the port of the piston ring (2) is designed to has an angle gap with an opening angle of 110 to 120 degree; and to match the angle gap on the piston ring (2), the vertex angle of angle plug (3) is designed slightly narrower than the opening angle of the angle gap; the elastic sheet steel (4) is jointed under the angle plug (3) and contacted with the piston (5) tightly; the angle plug (3) is propped into the angle gap under the elasticity from the elastic sheet steel (4) to implement self sealing. The utility model has the advantages of simple structure, high sealing performance, significant prolonged service life of the piston ring and convenient installation and use.

Description

Automatic sealed piston ring

Technical field

The utility model relates to a kind of automatic sealed piston ring.

Background technique

With reference to Fig. 6, be used for the piston ring on the cylinders such as steamer, train, automobile, tank, tractor, it is opening that the secondary piston ring is installed, the piston ring after the installation is owing to the elasticity of piston ring itself makes piston ring port closure.Because the motion of piston, the piston ring outer rim is rubbed, the area that this piston ring outer rim is rubbed accounts for 2～4% of cylinder barrel friction area, and piston back and forth reaches 1500～3000 times/minute in the cylinder working procedure, and along with the continuity of working procedure, it is more and more serious to wear and tear, when the 0.1mm of piston collar extension during by first install increases when being 1mm, the fuel oil pressurized gas is escaped through becoming big piston ring port, causes the locomotive over-emitting black exhaust, befouling environment; Make the machine power deficiency, gear descends, and fuel consumption increases; The lubricant oil burning is run off, and utilizes easily flame-out shutdown of petrol engine of spark plug.

For a long time, people are actively seeking to solve the frayed leakage problem of piston ring, once had that the people is overlapping in a piston ring groove of piston to put into two piston rings, make the opening of two-piston ring stagger, like this, after piston ring is frayed, leaking the fuel oil pressurized gas that gets off from last ring opened gap is blocked by following ring, significantly reduced the leakage of fuel oil pressurized gas, solved the leakage that causes the fuel oil pressurized gas because of piston ring scuffing to a certain extent, but can't stop the leakage of fuel oil pressurized gas fully, and piston ring groove gets processing again, and put into two piston rings in each piston ring groove, user cost is increased.

Summary of the invention

Meet the deficiency of wearing and tearing gas leakage in order to overcome the existing piston ring, the utility model provides a kind of automatic sealed piston ring, makes piston ring under situation about being worn, and the port of piston ring still keeps sealing, and machine still can proper functioning.

A kind of automatic sealed piston ring, be contained between cylinder barrel 1 and the piston 5, form by piston ring 2, angle type plug 3, elastic steel sheet 4, it is angle type breach about 110 °～120 ° that the port design of piston ring 2 becomes angle, cooperate this breach, have a drift angle angle to be slightly less than the angle type plug 3 of 2 jiaos of type breach of piston ring, elastic steel sheet 4 is welded in below the angle type plug 3, in order to make angle type plug 3 and elastic steel sheet 4 that movable leeway be arranged, the degree of depth of piston 5 upper piston annular grooves will suitably be deepened.The hardness R of angle type plug 3 _cShould be lower than the hardness R of piston ring 2 _c3 °～5 °.

Another kind of sealed piston ring automatically is designed to " L " shape to central port one end along following one side of something of center line, and the central port the other end is designed to " Γ " shape along the upper of center line, and shape is opposite up and down, works in coordination, and the E face forms one " baffle plate ".During assembling, the N of piston ring port can not adorn anti-towards cylinder head.

The utility model advantage compared to existing technology is that piston ring is under situation about being worn, and the port of piston ring still keeps sealing, and machine still can proper functioning.Prolonged the working life of piston ring, reduced user cost, to reducing fuel consumption, exhaust emissions is up to standard, environment purification, and the energy saving effect is remarkable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is first embodiment's a working state schematic representation

Fig. 2 is the partial enlarged drawing of Fig. 1

Fig. 3 is second embodiment's a working state schematic representation

Fig. 4 is Fig. 3 off working state partial enlarged drawing

Fig. 5 is that each of Fig. 4 is to sectional view

Fig. 6 is a prior art piston ring schematic representation

1-cylinder barrel 2-piston ring 3-angle type plug 4-elastic steel sheet 5-piston among the figure

Embodiment

In the embodiment shown in fig. 1, automatically sealed piston ring is made up of piston ring 2, angle type plug 3, elastic steel sheet 4, it is breach about 110 °～120 ° that piston ring 2 port design become angle, the breach of angle type plug 3 fitting piston rings 2, its drift angle angle is slightly less than piston ring 2 breach, elastic steel sheet 4 of welding below angle type plug 3, angle type plug 3 pushes up under the effect of elastic steel sheet 4 elastic force to the angle of piston ring 2 ports type breach, finishes automatically and squeegees.This money is applicable to the piston ring of little cylinder.Because the piston ring of little cylinder is thinner, if processing and milling, the intensity of piston ring will be subjected to very big influence, so little cylinder adopts this piston ring more suitable.

The hardness R of angle type plug 3 _cShould be lower than the hardness R of piston ring 2 _c3 °～5 °, angle type plug 3 is limited by the angle type breach of the port of piston ring 2, and is not easy to wear.

The degree of depth of piston 5 upper piston annular grooves will suitably be deepened, and makes angle type plug 3 and elastic steel sheet 4 that movable leeway be arranged.

In another embodiment shown in Figure 3, piston ring port one end is designed to " L " shape along following one side of something of center line, the central port the other end is designed to " Γ " shape along the upper of center line, shape is opposite up and down, work in coordination, even piston ring is worn, owing to have second half to stop, the unlikely leakage that causes the fuel oil pressurized gas.After the piston ring assembling, A-A and C-C integrally combine, and B-B and D-D integrally combine.After A-A and the C-C combination, middle parallel platform is one potted line, and after piston ring was worn, even the gap increases more than the 2mm between the upright seam in both sides, the fuel oil pressurized gas was scurried thus to the back, the shutoff of chance E face, and the fuel oil pressurized gas can't be escaped.During assembling, the N of piston ring port can not adorn instead towards cylinder head, otherwise, still gas leakage.This kind piston ring is used on the bigger machine of cylinder more.

Claims (2)

1, a kind of automatic sealed piston ring, be contained between cylinder barrel (1) and the piston (5), it is characterized in that: the port of piston ring (2) is the breach of 110 °～120 ° of angles, cooperate this breach to place the angle type plug (3) that the drift angle angle is smaller, elastic steel sheet (4) is welded in is close to piston (5) below the angle type plug 3, suitably deepens the degree of depth of piston (5) upper piston annular groove.

2, automatic sealed piston ring according to claim 1 is characterized in that: said angle type plug (3), its hardness R _cBe lower than the hardness R of piston ring (2) _c3 °～5 °.

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