High-frequency wear-resistant composite rod

Abstract

The utility model relates to the technical field of gas valves, and discloses a high-frequency wear-resistant composite rod which comprises an aluminum alloy main rod and a plastic bottom rod, and the aluminum alloy main rod is sleeved with the plastic bottom rod. The aluminum alloy main rod is composed of an aluminum alloy rod body, a limiting groove, a working activity area and a bottom limiting face, the limiting groove is formed in the lower middle portion of the aluminum alloy rod body, the limiting groove is sleeved with the plastic bottom rod, the working activity area is located below the limiting groove, and the bottom limiting face is located at the bottommost end of the working activity area. The structure of the composite rod adopts a combination form of aluminum alloy and a plastic insert, and by adopting the composite rod, the service life of the gas valve can be effectively prolonged, the working efficiency of the gas valve can be improved, the wear resistance of parts can be enhanced, and the safety of the gas valve is better; the novel composite rod can more effectively adapt to severe working environments such as high-frequency vibration and other extreme working conditions, the precision of parts and the use performance of a gas valve can be effectively guaranteed, and the reliability is better.

Description

Technical Field

[0001] The utility model belongs to the technical field of gas valves, in particular to a high-frequency wear-resistant composite rod. Background Art

[0002] As emission regulations have become increasingly stringent in recent years, there is a growing call to replace fuel with natural gas to meet high emission standards. According to changes in market demand, the research and development and production of natural gas engines are increasing, and the natural gas carburetors and two-stage pressure reducing valves that are equipped with them have also entered a rapid development stage. Combined with the actual operating conditions of gas engines in recent years, the current conventional structure of the two-stage pressure reducing valve has put forward higher requirements on the material requirements and service life of some parts when dealing with harsh environments. Therefore, it is urgent to provide a high-frequency wear-resistant composite rod to deal with subsequent harsh environments. Utility Model Content

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-frequency wear-resistant composite rod, which effectively solves the problems raised in the above background.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-frequency wear-resistant composite rod, comprising an aluminum alloy main rod and a plastic bottom rod, wherein the plastic bottom rod is sleeved on the outside of the aluminum alloy main rod;

[0005] The aluminum alloy main rod is composed of an aluminum alloy rod body, a limit groove, a working activity area and a bottom limit surface. The limit groove is arranged in the middle and lower part of the aluminum alloy rod body, and the plastic bottom rod is sleeved outside the limit groove. The working activity area is located below the limit groove, and the bottom limit surface is located at the bottom of the working activity area.

[0006] The plastic bottom rod is composed of a plastic rod body, a limiting boss, a plastic bottom rod limiting surface and a limiting arc giving surface. The limiting boss is arranged on the inner wall of the plastic rod body. The lower end of the plastic rod body is provided with a plastic bottom rod limiting surface and a limiting arc giving surface. The limiting arc giving surface is located on the outer circle of the plastic bottom rod limiting surface.

[0007] Preferably, the plastic bottom rod is arranged in a hollow structure.

[0008] Preferably, there are two limiting bosses, and the limiting grooves are matched with the limiting bosses.

[0009] Preferably, the limiting arc allows the positioning surface to be arranged in an inclined shape.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] 1. The structure of the composite rod of the utility model adopts a combination of aluminum alloy + plastic inserts. The composite rod can effectively extend the service life of the gas valve, improve the working efficiency of the gas valve, enhance the wear resistance of the parts, and improve the safety of the gas valve;

[0012] 2. The new composite rod can more effectively adapt to harsh working environments, such as extreme working conditions such as high-frequency vibration, and can effectively ensure the accuracy of parts and the performance of gas valves, with better reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0014] In the attached picture:

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the aluminum alloy main rod of the utility model;

[0018] Figure 4 It is a cross-sectional view of the plastic bottom rod of the utility model;

[0019] In the figure: 1. Aluminum alloy main rod; 1-1. Aluminum alloy rod body; 1-2. Limiting groove; 1-3. Working activity area; 1-4. Bottom limiting surface; 2. Plastic bottom rod; 2-1. Plastic rod body; 2-2. Limiting boss; 2-3. Plastic bottom rod limiting surface; 2-4. Limiting arc clearance surface. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with 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 of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] Embodiment 1, by Figure 1-Figure 4 The utility model comprises an aluminum alloy main rod 1 and a plastic bottom rod 2, wherein the plastic bottom rod 2 is sleeved on the outside of the aluminum alloy main rod 1;

[0022] The aluminum alloy main rod 1 is composed of an aluminum alloy rod body 1-1, a limiting groove 1-2, a working activity area 1-3 and a bottom limiting surface 1-4. The limiting groove 1-2 is provided in the middle and lower part of the aluminum alloy rod body 1-1, and the plastic bottom rod 2 is sleeved outside the limiting groove 1-2. The working activity area 1-3 is located below the limiting groove 1-2, and the bottom limiting surface 1-4 is located at the bottom of the working activity area 1-3.

[0023] The aluminum alloy shaft 1-1 is used as the main support rod for the movement of the component, the limit groove 1-2 is used to ensure that the plastic bottom rod 2 is embedded with anti-loosening and anti-falling functions, the working activity area 1-3 is the activity area of ​​the related moving parts, and the bottom limit surface 1-4 is used to control the lower limit area of ​​the related moving parts;

[0024] The plastic bottom rod 2 is composed of a plastic rod body 2-1, a limiting boss 2-2, a plastic bottom rod limiting surface 2-3 and a limiting arc giving surface 2-4. The limiting boss 2-2 is arranged on the inner wall of the plastic rod body 2-1, and the lower end of the plastic rod body 2-1 is provided with a plastic bottom rod limiting surface 2-3 and a limiting arc giving surface 2-4. The limiting arc giving surface 2-4 is located on the outer circle of the plastic bottom rod limiting surface 2-3. The plastic bottom rod 2 is arranged in a hollow structure, there are two limiting bosses 2-2, the limiting groove 1-2 is adapted to the limiting boss 2-2, and the limiting arc giving surface 2-4 is arranged in an inclined shape.

[0025] Among them, the plastic rod body 2-1 is the main body of the component, the limiting boss 2-2 is to ensure the embedding amount of the limiting groove 1-2, and the size of the embedding amount determines that the aluminum alloy main rod 1 will not loosen or detach during the working process and the durability test process, the plastic bottom rod limiting surface 2-3 is to control the upper limit area of ​​the relevant moving parts, and the setting of the limiting arc giving surface 2-4 is to give way to the hard corner area to ensure its wear degree during the working process, thereby improving the overall service life cycle of the plastic bottom rod 2;

[0026] The structure of this new composite rod adopts a combination of aluminum alloy + plastic inserts. The aluminum alloy main rod 1 is placed at a specified position of the injection mold of the plastic bottom rod 2 for injection molding. The aluminum alloy main rod 1 must be made of aluminum alloy, and the plastic bottom rod 2 must be made of plastic material with high toughness and wear resistance.

Claims

1. A high-frequency wear-resistant composite rod, comprising an aluminum alloy main rod (1) and a plastic bottom rod (2), characterized in that: The plastic bottom rod (2) is sleeved on the outside of the aluminum alloy main rod (1); The aluminum alloy main rod (1) is composed of an aluminum alloy rod body (1-1), a limiting groove (1-2), a working activity area (1-3) and a bottom limiting surface (1-4); the limiting groove (1-2) is provided in the middle and lower part of the aluminum alloy rod body (1-1); the plastic bottom rod (2) is sleeved outside the limiting groove (1-2); the working activity area (1-3) is located below the limiting groove (1-2); and the bottom limiting surface (1-4) is located at the bottom of the working activity area (1-3); The plastic bottom rod (2) is composed of a plastic rod body (2-1), a limiting boss (2-2), a plastic bottom rod limiting surface (2-3) and a limiting circular arc giving surface (2-4); the limiting boss (2-2) is arranged on the inner wall of the plastic rod body (2-1); the lower end of the plastic rod body (2-1) is provided with a plastic bottom rod limiting surface (2-3) and a limiting circular arc giving surface (2-4); the limiting circular arc giving surface (2-4) is located on the outer circle of the plastic bottom rod limiting surface (2-3).

2. A high-frequency wear-resistant composite rod according to claim 1, characterized in that: The plastic bottom rod (2) is arranged in a hollow structure.

3. A high-frequency wear-resistant composite rod according to claim 1, characterized in that: There are two limiting bosses (2-2), and the limiting groove (1-2) is matched with the limiting bosses (2-2).

4. A high-frequency wear-resistant composite rod according to claim 1, characterized in that: The limiting circular arc allowing surface (2-4) is arranged in an inclined shape.

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