High-strength anti-fatigue piston ring

Abstract

The utility model relates to the technical field of piston ring devices, in particular to a high-strength anti-fatigue piston ring which comprises a compression ring, a middle ring is arranged at the lower end of the compression ring, an oil control ring is arranged at the lower end of the middle ring, an upper concave layer is arranged on the lower surface of the oil control ring, and a fracture is formed in the surface of the compression ring. A compression ring is arranged at the upper end of the oil control ring, a plurality of meshing bodies are assembled on the surface of the compression ring, an embedding opening is formed in the side surface of the compression ring, a gold ring is assembled on the embedding opening in a matched mode, a temperature-resistant layer is arranged on the surface of the alloy ring, and a lining spring is assembled at the lower end of the oil control ring. A plurality of meshing bodies are designed to ensure that the piston ring closely moves in the up-and-down reciprocating motion process of the piston, and the meshing bodies are made of special alloy steel, have higher tensile strength and fatigue strength and can adapt to higher speed increasing and pressure increasing effects. And the condition that the ring opening of the piston ring is cracked or fractured too early is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to piston ring device technical field, concretely is a kind of high-strength anti-fatigue piston ring. BACKGROUND

[0002] Piston ring is the metal ring for embedding inside piston groove, piston ring is divided into two kinds: compression ring 1 and oil ring, compression ring 1 can be used to seal combustible mixture in combustion chamber, oil ring is used to scrape the excess oil on cylinder, piston ring is a kind of metal elastic ring with larger outward expansion deformation, it is assembled to the corresponding annular groove of section, reciprocating and rotating movement piston ring, rely on the pressure difference of gas or liquid, form seal between ring outer circle and cylinder and one side of ring and ring groove.

[0003] Nowadays, the types of piston ring are various, but with the gradual increase of engine speed, especially the gradually increasing number of supercharged engine, the traditional piston ring has not adapted to the performance requirement of modern engine, due to the increase of engine speed and the effect of supercharging, the explosion force of engine in work formation is increased by 1 / 3 on the basis of original engine, lead to the vibration amplitude of piston ring in piston ring groove, the strength of ordinary piston ring is not enough, the vibration amplitude is greater at opening, ring port cylinder and broken phenomenon often occur, seriously affect the normal work of engine, increase the frequency of maintenance, increase the maintenance cost. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of high-strength anti-fatigue piston ring to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of high-strength anti-fatigue piston ring, including compression ring, the lower end of compression ring is equipped with intermediate ring, and the lower end of intermediate ring is equipped with oil control ring, is equipped with upper concave layer on the lower surface of oil control ring, the surface of compression ring is equipped with fracture, and a plurality of engaging bodies are assembled on the surface of compression ring, is equipped with embedding port on the side surface of compression ring, embedding port is equipped with alloy ring, and the surface of alloy ring is equipped with temperature-resistant layer, and lining spring is assembled on the lower end of oil control ring.

[0006] Preferably, the bamboo fiber component is added to the material of compression ring.

[0007] Preferably, the material of intermediate ring is selected from alloy steel material, and the bottom of intermediate ring is equipped with outer edge port, and the middle of intermediate ring is equipped with interruption end.

[0008] Preferably, the upper surface of intermediate ring is equipped with engaging body, and the side surface of intermediate ring is equipped with embedding port, and alloy ring is also assembled at embedding port.

[0009] Preferably, the spring is assembled at the upper concave layer, and the outer side of the oil control ring is assembled with the oil scraping layer.

[0010] Preferably, the lower end of the spring is assembled with the interlayer block, and the interlayer block forms the oil conveying port.

[0011] Compared with the prior art, the utility model has the beneficial effects that:

[0012] 1. Compared with other piston rings, the piston ring of the device is assembled with engaging bodies at the upper end, and the design of the several engaging bodies can keep the piston ring following the movement during the repeated movement of the piston up and down, and the engaging bodies are made of special alloy steel, which has higher tensile strength and fatigue strength, can adapt to stronger speed-up and supercharging effect, and avoids the situation that the ring opening of the piston ring is cracked or broken too early.

[0013] 2. In addition, the outer side of the piston ring is assembled with an alloy ring, the shape of the piston ring is optimized through the design of the alloy ring to reduce stress concentration and maximize the dispersion of cyclic load, and in addition, the alloy ring also improves the hardness and toughness of the material through precise heat treatment process, thereby enhancing the fatigue resistance. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is a small angle top view of the utility model;

[0015] Fig. 2 It is a small angle bottom view of the utility model;

[0016] Fig. 3 It is a front view of the utility model.

[0017] In the figure: compression ring 1, intermediate ring 2, oil control ring 3, spring 4, engaging body 5, temperature-resistant layer 6, outer edge port 7, oil scraping layer 8, oil conveying port 9, interlayer block 10, alloy steel 11, bamboo fiber component 12, fitting port 13, alloy ring 14. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0019] Please refer to Figs. 1-3 The utility model provides a technical scheme:

[0020] Reference Fig. 1The main body is a compression ring 1. The lower end of the compression ring 1 is provided with an intermediate ring 2, and the lower end of the intermediate ring 2 is provided with an oil control ring 3. The lower surface of the oil control ring 3 is provided with an upper concave layer. The upper concave layer is designed at a position less than half a circle on the lower surface of the oil control ring 3. The surface of the compression ring 1 is provided with a break, and several meshing bodies 5 are assembled on the surface of the compression ring 1. The meshing bodies 5 are made of special alloy steel 11, which has higher tensile strength and fatigue strength, and can adapt to stronger acceleration and pressurization effects, avoiding premature cracking or breakage of the piston ring at the ring mouth. The side surface of the compression ring 1 is provided with a fitting port 13. The fitting port 13 is semi-circular in shape. An alloy ring 14 is assembled on the fitting port 13. The alloy ring 14 is welded to the position of the fitting port 13, and the surface of the alloy ring 14 is provided with a heat-resistant layer 6. The heat-resistant layer 6 and the high temperature resistance of the alloy ring 14 itself enable it to withstand most high temperature conditions. A bushing 4 is assembled at the lower end of the oil control ring 3.

[0021] refer to Fig. 2 , 3 The main body is a compression ring 1, which is made of bamboo fiber 12. The piston ring prepared in this way has the advantages of high strength and tear resistance. The intermediate ring 2 is made of alloy steel 11, and the bottom of the intermediate ring 2 is provided with an outer edge opening 7. The intermediate ring 2 mainly plays an intermediate auxiliary role, which not only isolates the high temperature at the upper end, but also assists in scraping oil at the lower end. There is an interruption end in the middle of the intermediate ring 2. The upper surface of the intermediate ring 2 is equipped with a meshing body 5, and the side of the intermediate ring 2 is provided with a fitting opening 13. An alloy ring 14 is also installed at the fitting opening 13. The spring 4 is installed in the upper concave layer, and the oil scraping layer 8 is installed on the outside of the oil control ring 3. The lower end of the spring 4 is equipped with a sandwich block 10, and an oil inlet 9 is formed between the sandwich blocks 10, so that the lubricating oil scraped by the oil scraping layer 8 enters the appropriate position along the oil inlet 9.

[0022] In actual use, firstly, the piston rings designed in this device are sequentially assembled onto the outer surface of the piston ring, and the meshing body 5 is aligned with the designed position on the outer surface of the piston ring. After assembly, as the piston starts, it begins to move up and down with the piston. As the speed and pressure increase are required, high pressure and high temperature are generated inside. The compression ring 1 effectively isolates the high temperature and high pressure inside. The middle part isolates the high pressure and high temperature that the compression ring 1 missed. The design of the meshing body 5 enables the device to withstand the test of vibration during movement. The lower oil control layer scrapes the lubricating oil on the piston surface and inputs it into the side of the piston through the oil inlet 9 on the surface of the bottom bushing 4 for easy reuse.

[0023] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-strength fatigue-resistant piston ring, comprising a compression ring (1), wherein the lower end of the compression ring (1) is provided with an intermediate ring (2), and the lower end of the intermediate ring (2) is provided with an oil control ring (3), wherein the lower surface of the oil control ring (3) is provided with an upper concave layer, characterized in that: The surface of the compression ring (1) is provided with a break, and several meshing bodies (5) are assembled on the surface of the compression ring (1). A fitting port (13) is provided on the side surface of the compression ring (1). An alloy ring (14) is assembled on the fitting port (13), and a heat-resistant layer (6) is provided on the surface of the alloy ring (14). A bushing (4) is assembled at the lower end of the oil control ring (3).

2. The high-strength fatigue-resistant piston ring according to claim 1, characterized in that: The intermediate ring (2) is made of alloy steel (11), and the bottom of the intermediate ring (2) is provided with an outer edge opening (7), and an interruption end is provided in the middle of the intermediate ring (2).

3. A high-strength fatigue-resistant piston ring according to claim 2, characterized in that: The upper surface of the intermediate ring (2) is fitted with a meshing body (5), and the side of the intermediate ring (2) is provided with a fitting opening (13), where an alloy ring (14) is also fitted.

4. A high-strength fatigue-resistant piston ring according to claim 3, characterized in that: The spring (4) is fitted at the upper concave layer, and the oil control ring (3) is fitted with an oil scraping layer (8) on the outside.

5. A high-strength fatigue-resistant piston ring according to claim 4, characterized in that: The lower end of the spring (4) is fitted with a sandwich block (10), and an oil inlet (9) is formed between the sandwich blocks (10).

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