High-strength powder metallurgy automobile casing pipe

Abstract

The utility model relates to the technical field of automobile parts, in particular to a high-strength powder metallurgy automobile casing pipe which comprises a casing pipe body, a protective pipe is fixedly connected to the outer wall of the casing pipe body, a plurality of evenly-distributed strip-shaped holes are formed in the outer wall of the protective pipe, and the casing pipe body comprises a base pipe. The inner wall of the base pipe is fixedly connected with a corrosion-resistant layer, the protective pipe and the base pipe are both metal pipelines formed through the powder metallurgy technology, the foundation strength is high, the section of the protective pipe is of a square structure, the four vertex angles of the protective pipe are round corners, the four round corners are larger in thickness and better in wear resistance and impact resistance, a plurality of evenly-distributed strip-shaped holes are formed in the outer wall of the protective pipe, and the service life of the protective pipe is prolonged. A plurality of reinforcing rib structures are formed between every two strip-shaped holes, the impact resistance of the surface of the protective pipe is improved, the casing pipe body is effectively protected accordingly, the inner wall is high in corrosion resistance, the outer wall is resistant to scraping and abrasion, the service life is long, leakage of media in the pipe body is avoided, and normal operation of an automobile is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts, in particular to a high-strength powder metallurgy automobile casing. Background Art

[0002] With the continuous development of China's automobile industry and the continuous improvement of people's living standards, people's purchasing power has also increased significantly. In order to meet people's needs, major automobile manufacturers continue to launch new models, low-priced, safe, environmentally friendly and comfortable cars; for automobile parts suppliers, opportunities, pressures and challenges coexist. In order to avoid being eliminated by the increasingly fierce market, suppliers continue to improve product structure and improve product quality.

[0003] Due to the small space around the car engine, there is not much gap between the car sleeves and other parts connected to the car engine. In addition, the constant bumps, shaking and direction changes during the car's driving process can easily cause direct collision and friction between the car sleeves and other parts. If the mutual collision and friction lasts for a long time, it will cause the tube body to rupture and the medium in the tube body to leak. In severe cases, the engine will burn out and the brake system will fail, causing unnecessary safety accidents. Utility Model Content

[0004] The purpose of the utility model is to provide a high-strength powder metallurgy automobile casing, which has the characteristics of high strength, strong impact resistance, strong corrosion resistance of the inner wall, scratch and wear resistance of the outer wall, long service life, avoids leakage of the medium inside the pipe body, and ensures the normal operation of the automobile.

[0005] To achieve the above objectives, the present invention provides the following technical solutions: a high-strength powder metallurgy automotive bushing, comprising a bushing body, a protective tube fixedly connected to the outer wall of the bushing body, a plurality of evenly distributed strip holes formed on the outer wall of the protective tube, the bushing body comprising a base tube, a corrosion-resistant layer fixedly connected to the inner wall of the base tube, a reinforcement layer fixedly connected to the outer wall of the base tube, a buffer layer fixedly connected to the outer wall of the reinforcement layer, and a wear-resistant layer provided on the outer wall of the buffer layer.

[0006] In order to improve the strength and impact resistance of the casing, as a preferred high-strength powder metallurgy automobile casing of the present invention, the cross-section of the protective tube is a square structure and the four top corners are rounded.

[0007] In order to improve the corrosion resistance of the inner wall of the base pipe, as a preferred embodiment of the high-strength powder metallurgy automobile casing of the present invention, the corrosion-resistant layer is a polyurethane coating.

[0008] In order to improve the overall strength of the casing, as a preferred embodiment of the high-strength powder metallurgy automobile casing of the present invention, the reinforcement layer is a mesh structure woven from multiple strands of steel wire.

[0009] In order to achieve a shock-absorbing and buffering effect, as a preferred embodiment of the high-strength powder metallurgy automobile casing of the present invention, the buffer layer is made of nitrile rubber.

[0010] In order to improve the wear resistance, as a preferred embodiment of the high-strength powder metallurgy automobile casing of the present invention, the wear-resistant layer is an APS nano-zirconia coating.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0012] The outer wall of the casing body is fixedly connected with a protective tube, which can effectively protect the casing body from the outside. The protective tube and the base tube are both metal pipes formed by powder metallurgy process, with high basic strength, and the cross-section of the protective tube is a square structure with four rounded corners. The four rounded corners are thicker and more wear-resistant and impact-resistant, and the outer wall of the protective tube is provided with a plurality of evenly distributed strip holes, and the plurality of strip holes form a plurality of reinforcing rib structures between each other, thereby improving the impact resistance of the protective tube surface, thereby effectively protecting the casing body, and the inner wall has strong corrosion resistance, the outer wall is scratch-resistant and wear-resistant, and has a long service life, thereby avoiding leakage of the medium inside the tube body and ensuring the normal operation of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the overall external structure diagram of the utility model;

[0014] Figure 2 This is a cross-sectional structural diagram of the casing main body of the present utility model.

[0015] In the figure: 1. Casing body; 2. Protective tube; 3. Strip hole; 4. Base tube; 5. Corrosion-resistant layer; 6. Reinforcement layer; 7. Buffer layer; 8. Wear-resistant layer. DETAILED DESCRIPTION

[0016] See also Figures 1 to 2 A high-strength powder metallurgy automobile casing includes a casing body 1, a protective tube 2 is fixedly connected to the outer wall of the casing body 1, and a plurality of evenly distributed strip holes 3 are opened on the outer wall of the protective tube 2. The casing body 1 includes a base tube 4, a corrosion-resistant layer 5 is fixedly connected to the inner wall of the base tube 4, a reinforcement layer 6 is fixedly connected to the outer wall of the base tube 4, a buffer layer 7 is fixedly connected to the outer wall of the reinforcement layer 6, and a wear-resistant layer 8 is provided on the outer wall of the buffer layer 7.

[0017] In this embodiment: the outer wall of the casing body 1 is fixedly connected with a protective tube 2, which can effectively protect the casing body 1 from the outside. The protective tube 2 and the base tube 4 are both metal pipes formed by powder metallurgy process, with high basic strength, and the cross section of the protective tube 2 is a square structure and the four top corners are rounded. The thickness of the four rounded corners is larger, which is more wear-resistant and impact-resistant, and the outer wall of the protective tube 2 is provided with a plurality of evenly distributed strip holes 3, and the plurality of strip holes 3 form a plurality of reinforcing rib structures between each other, which improves the impact resistance of the surface of the protective tube 2, thereby strengthening the casing body. 1 Effective protection, the corrosion-resistant layer 5 is a polyurethane coating, which improves the corrosion resistance of the inner wall of the casing body 1 and extends its service life. The reinforcement layer 6 is a mesh structure woven from multiple strands of steel wire, which effectively improves the pipeline's tear resistance and strength. The buffer layer 7 is nitrile rubber and is arranged on the surface of the reinforcement layer 6. When impacted, it can buffer the impact force and has a good shock absorption effect. The wear-resistant layer 8 is an APS nano-zirconia coating, which improves the wear and scratch resistance of the surface wall of the casing body 1. Even if an external object passes through the strip hole 3, it can also have a good wear-resistant effect.

[0018] As a technical optimization solution of the present invention, the cross section of the protection tube 2 is a square structure and the four top corners are rounded.

[0019] In this embodiment, the cross section of the protective tube 2 is a square structure and the four corners are rounded. The four rounded corners are thicker and more wear-resistant and impact-resistant.

[0020] As a technical optimization solution of the present invention, the corrosion-resistant layer 5 is a polyurethane coating.

[0021] In this embodiment, the corrosion-resistant layer 5 is a polyurethane coating, thereby improving the corrosion resistance of the inner wall of the sleeve body 1 and extending the service life.

[0022] As a technical optimization solution of the present invention, the reinforcement layer 6 is a mesh structure woven from multiple strands of steel wire.

[0023] In this embodiment, the reinforcement layer 6 is a mesh structure woven from multiple strands of steel wires, which effectively improves the tear resistance of the pipeline and increases the strength.

[0024] As a technical optimization solution of the present invention, the buffer layer 7 is made of nitrile rubber.

[0025] In this embodiment, the buffer layer 7 is made of nitrile rubber and is provided on the surface of the reinforcing layer 6. When impacted, the buffer layer 7 can buffer the impact force and has a good shock absorption effect.

[0026] As a technical optimization solution of the present invention, the wear-resistant layer 8 is an APS nano-zirconia coating.

[0027] In this embodiment, the wear-resistant layer 8 is an APS nano-zirconia coating, which improves the wear resistance and scratch resistance of the surface wall of the sleeve body 1 and can provide good wear resistance even if an external object passes through the strip-shaped hole 3.

[0028] Working principle: The outer wall of the casing body 1 is fixedly connected with a protective tube 2, which can effectively protect the casing body 1 from the outside. The protective tube 2 and the base tube 4 are metal pipes formed by powder metallurgy process, with high basic strength. The cross section of the protective tube 2 is a square structure and the four top corners are rounded. The thickness of the four rounded corners is larger, which is more wear-resistant and impact-resistant. The outer wall of the protective tube 2 is provided with a plurality of evenly distributed strip holes 3. The plurality of strip holes 3 form a plurality of reinforcing rib structures between each other, which improves the impact resistance of the surface of the protective tube 2, thereby strengthening the casing body 1. Effective protection, the corrosion-resistant layer 5 is a polyurethane coating, which improves the corrosion resistance of the inner wall of the casing body 1 and extends its service life. The reinforcement layer 6 is a mesh structure woven from multiple strands of steel wire, which effectively improves the pipeline's tear resistance and strength. The buffer layer 7 is nitrile rubber and is arranged on the surface of the reinforcement layer 6. When impacted, it can buffer the impact force and has a good shock absorption effect. The wear-resistant layer 8 is an APS nano-zirconia coating, which improves the wear and scratch resistance of the surface wall of the casing body 1. Even if external objects pass through the strip hole 3, it can also have a good wear-resistant effect.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A high-strength powder metallurgy automobile bushing, comprising a bushing body (1), characterized in that: The outer wall of the casing body (1) is fixedly connected to a protective tube (2), and the outer wall of the protective tube (2) is provided with a plurality of evenly distributed strip-shaped holes (3). The casing body (1) comprises a base tube (4), the inner wall of the base tube (4) is fixedly connected to a corrosion-resistant layer (5), the outer wall of the base tube (4) is fixedly connected to a reinforcement layer (6), the outer wall of the reinforcement layer (6) is fixedly connected to a buffer layer (7), and the outer wall of the buffer layer (7) is provided with a wear-resistant layer (8).

2. The high-strength powder metallurgy automobile bushing according to claim 1, characterized in that: The cross section of the protective tube (2) is a square structure and the four top corners are rounded.

3. The high-strength powder metallurgy automobile bushing according to claim 1, characterized in that: The corrosion-resistant layer (5) is a polyurethane coating.

4. The high-strength powder metallurgy automobile bushing according to claim 1, characterized in that: The reinforcement layer (6) is a mesh structure woven from multiple strands of steel wire.

5. The high-strength powder metallurgy automobile bushing according to claim 1, characterized in that: The buffer layer (7) is made of nitrile rubber.

6. The high-strength powder metallurgy automobile bushing according to claim 1, characterized in that: The wear-resistant layer (8) is an APS nano-zirconia coating.

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