Anti-twisting piston ring

Abstract

The utility model discloses an anti-distortion piston ring which comprises a ring body and is characterized in that an oil control externally-tangent table is arranged on the upper side face of the ring body, a carbon deposition prevention internally-tangent table is arranged on the lower side face of the ring body, the outer circle of the ring body is a conical surface, chamfers are arranged on the upper edge and the lower edge of the conical surface, and wear-resisting chromium plating layers are arranged on the conical surface and the chamfers. The piston ring achieves oil control and carbon deposition prevention, the inner step achieves anti-distortion of the piston ring, and the carbon deposition cleaning effect is improved.

Description

Technical Field

[0001] The utility model relates to an improved invention of a piston ring, in particular to an improved invention of an anti-twisted piston ring. Background Art

[0002] The piston ring is a metal ring used to be embedded in the piston groove. It is a metal elastic ring with a large outward expansion deformation. It is assembled into the cross section and the corresponding annular groove. The piston ring, which reciprocates and rotates, forms a seal between the outer surface of the ring and the cylinder and between the ring and one side of the ring groove by relying on the pressure difference of gas or liquid. Usually, the outer end of the piston ring is used to scrape off the excess oil on the cylinder. However, the scraped oil is not effectively controlled and is easy to flow radially on the piston ring. The inner end of the piston ring plays the role of scraping off carbon deposits. However, the scraped carbon deposits are easy to accumulate and difficult to discharge. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide an anti-twisting piston ring.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions: the anti-twisting piston ring includes a ring body, which is characterized in that an oil control circumscribed platform is provided on the upper side of the ring body, and an anti-carbon deposition internal cutting platform is provided on the lower side of the ring body. The outer circle of the ring body is a conical surface, and the upper and lower edges of the conical surface are chamfered, and a wear-resistant chrome plating layer is provided on the conical surface and the chamfer.

[0005] The angle α between the upper step surface and the lower step surface of the inscribed platform is greater than 90°, the upper step surface is arranged horizontally, the lower step surface is arranged outwardly inclined, and there is an arc transition between the upper step surface and the lower step surface.

[0006] The sum of the radial depths of the circumscribed terrace and the inscribed terrace on the ring body is less than the width of the ring body.

[0007] The beneficial effect of the utility model is that the improved anti-twisting piston ring realizes oil control by setting an external cutting platform, realizes carbon deposit prevention by setting an internal cutting platform, and the inner step also realizes anti-twisting of the piston ring, which can adapt to the changes of the piston surface, thereby ensuring better sealing performance and carbon deposit treatment effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings.

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 For this utility model Figure 1 AA section view. DETAILED DESCRIPTION

[0011] The accompanying drawings show the structure of the utility model, and the following further describes its relevant details in conjunction with the accompanying drawings. Figure 1-2 The anti-twisting piston ring includes a ring body 1, a notch 2 is arranged on the ring body 1, an oil control circumscribed platform 3 is arranged on the upper side of the ring body 1, the circumscribed platform 3 is used to gather the scraped oil and limit the radial flow of the oil, and an anti-carbon deposit internal cutting platform 4 is arranged on the lower side of the ring body 1, the internal cutting platform 4 is used to guide the external discharge of carbon deposits, and the internal cutting platform 4 also realizes the anti-twisting of the piston ring, that is, the reverse twisting of the piston ring during the reciprocating motion, thereby improving the carbon deposit cleaning effect. The outer circle of the ring body 1 is set as a conical surface 5, and the upper and lower edges of the conical surface are provided with chamfers 6, and the conical surface 5 and the chamfer 6 are provided with a wear-resistant chrome plating layer 7 to improve the wear resistance, and the conical surface setting can reduce the running-in period.

[0012] As a specific implementation of further improvement, the angle α between the upper step surface 41 and the lower step surface 42 of the inscribed platform 4 is greater than 90°, the corresponding upper step surface 41 is arranged horizontally, the lower step surface 42 is arranged inclined outward, and there is an arc surface 43 transition between the upper step surface 41 and the lower step surface 42, which guides the scraped carbon deposits to be discharged outward along the upper step surface 41, the arc surface 43, and the outward inclined lower step surface 42, thereby improving the discharge effect.

[0013] As a specific implementation of further improvement, the sum of the radial depths of the circumscribed terrace 3 and the inscribed terrace 4 on the ring body 1 is less than the width of the ring body 1, so as to ensure the structural strength of the ring body 1 while achieving the effect of controlling oil and preventing carbon deposition.

[0014] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An anti-twist piston ring, comprising a ring body, characterized in that: The upper side of the ring body is provided with an oil control external cutting platform, and the lower side of the ring body is provided with a carbon deposition prevention internal cutting platform. The outer circle of the ring body is a conical surface, the upper and lower edges of the conical surface are chamfered, and the conical surface and the chamfer are provided with a wear-resistant chrome plating layer.

2. The anti-twist piston ring according to claim 1, characterized in that: The angle α between the upper step surface and the lower step surface of the inscribed platform is greater than 90°, the upper step surface is arranged horizontally, the lower step surface is arranged outwardly inclined, and there is an arc transition between the upper step surface and the lower step surface.

3. The anti-twist piston ring according to claim 1, characterized in that: The sum of the radial depths of the circumscribed terrace and the inscribed terrace on the ring body is less than the width of the ring body.

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