High-strength heat-resistant flange of automobile exhaust pipe

Abstract

The utility model relates to the technical field of flanges, in particular to a high-strength heat-resistant flange of an automobile exhaust pipe. The flange comprises a flange body, a communicating hole is formed in one side of the flange body, a circular plate is slidably connected to the surface of the communicating hole of the flange body, two connecting holes are formed in the surface of the flange body, circular rods are slidably connected to the surfaces of the connecting holes of the two flange bodies, and a protection plate is fixedly connected to one ends of the two circular rods. One side of the protection plate is fixedly connected with the circular plate, and the side, away from the protection plate, of the circular plate is fixedly connected with a supporting plate. The flange solves the problems that when the flange body is idle, foreign matter such as dust, gravel and metal chippings enter a communicating hole and a connecting hole of the flange body, the connecting hole and the communicating hole of the flange body are scratched, corroded or deformed by the foreign matter, sealing is not tight when the flange body is connected with an exhaust pipe, and the air leakage phenomenon occurs. Therefore, the service lives of the flange body and the exhaust pipe are shortened.

Description

Technical Field

[0001] This utility model relates to the field of flange technology, and in particular to a high-strength heat-resistant flange for automotive exhaust pipes. Background Technology

[0002] As a key component of a vehicle's powertrain, the exhaust pipe's performance directly impacts the vehicle's power performance, emissions, and noise control. The flange, a crucial part connecting various components of the exhaust pipe, serves a dual function of sealing and support; its performance is critical to the proper functioning of the exhaust pipe. During vehicle production and storage, flanges with connecting holes, whether idle or stored, are highly susceptible to intrusion by dust, sand, metal shavings, and other foreign objects. These objects can scratch the inner surface of the flange, damage the sealing structure, and cause leaks at the exhaust pipe connections. This not only reduces the efficiency of the exhaust system but also leads to exhaust gas leakage, affecting the vehicle's environmental performance and safety.

[0003] Chinese patent publication number CN204387537U discloses an automotive exhaust pipe flange. The key technical points are: This invention improves recognizability and installation efficiency by setting the upper and lower flange rings to different shapes; the three-stage stepped holes and threaded holes ensure good assembly, prevent loosening, and enhance vibration resistance; the stepped holes have chamfered edges, further improving installation. Compared to existing technologies, this octagonal main structure with guide grooves improves structural stability and strength, significantly extending the flange's service life.

[0004] The aforementioned and existing related technologies often suffer from the following defects: when the flange body is idle, foreign objects such as dust, gravel, and metal shavings enter the connecting holes and connection holes of the flange body, causing the connecting holes and connecting holes of the flange body to be scratched, corroded, or deformed by impurities. This results in poor sealing and air leakage when the flange body is connected to the exhaust pipe, thus reducing the service life of the flange body and the exhaust pipe. Therefore, a high-strength heat-resistant flange for automotive exhaust pipes is proposed to address the above problems. Utility Model Content

[0005] The purpose of this utility model is to solve the problem in the prior art where the flange body is scratched, corroded or deformed by impurities in the connection hole and the connecting hole, which leads to poor sealing and air leakage when the flange body is connected to the exhaust pipe, thus reducing the service life of the flange body and the exhaust pipe. Therefore, a high-strength heat-resistant flange for automobile exhaust pipe is proposed.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-strength heat-resistant flange for automotive exhaust pipes, comprising a flange body, a connecting hole on one side of the flange body, a circular plate slidably connected to the surface of the connecting hole, two connecting holes on the surface of the flange body, circular rods slidably connected to the surfaces of the two connecting holes, a protective plate fixedly connected to one end of the two circular rods, a protective plate fixedly connected to one side of the protective plate, a support plate fixedly connected to the side of the circular plate away from the protective plate, sliding rods fixedly connected to both sides of the support plate, an L-shaped plate slidably connected to the arc surface of the sliding rod, an L-shaped plate slidably connected to one side of the L-shaped plate and one side of the L-shaped plate and the flange body, a heat-resistant layer on the inner surface of the flange body, and a corrosion-resistant layer on the surface of the flange body.

[0007] The aforementioned components achieve the following effect: they protect the connecting holes and connection holes of the flange body, preventing foreign objects such as dust, gravel, and metal shavings from entering these holes when the flange body is idle. This prevents the connecting holes and connection holes from being scratched, corroded, or deformed by impurities, which could lead to poor sealing and air leakage when the flange body is connected to the exhaust pipe. Consequently, this reduces the service life of the flange body and the exhaust pipe, thus improving the safety of the device.

[0008] Preferably, a first spring is fitted onto the arc surface of the slide rod, and the two ends of the first spring are fixedly connected to the support plate and the L-shaped plate, respectively.

[0009] The effect achieved by the above components is that the first spring automatically pushes the L-shaped plate onto the surface of the flange body, thereby reducing the number of steps required for the operator to operate the device and improving the operator's work efficiency.

[0010] Preferably, a rubber ring is fixedly connected to one side of the L-shaped plate, and the rubber ring is slidably connected to the arc surface of the slide rod.

[0011] The effect achieved by the above components is that the elasticity of the rubber ring wraps around and binds the arc surface of the slide rod, thereby slowing down the sliding speed of the L-shaped plate on the arc surface of the slide rod, and reducing the possibility of unintentional displacement of the L-shaped plate caused by external shaking, thus achieving a damping effect.

[0012] Preferably, a number of heat dissipation plates are fixedly connected to the surface of the flange body, and the heat dissipation plates are evenly distributed in a linear array on the surface of the flange body.

[0013] The effect achieved by the above components is that the heat dissipation plate increases the heat dissipation area of ​​the flange body, significantly improves the heat exchange efficiency, reduces the temperature of the flange body, and ensures that the flange body can maintain high strength and good mechanical properties in high-temperature environments.

[0014] In summary, the beneficial effects of this utility model are as follows:

[0015] In this invention, the cooperation between the circular plate, the circular rod, the protective plate, and the support plate achieves the effect of protecting the connecting holes and connection holes of the flange body. This prevents foreign objects such as dust, gravel, and metal shavings from entering the connecting holes and connection holes of the flange body when it is not in use. This would cause the connecting holes and connection holes of the flange body to be scratched, corroded, or deformed by impurities, resulting in poor sealing and air leakage when the flange body is connected to the exhaust pipe. Consequently, this would reduce the service life of the flange body and the exhaust pipe, thus improving the safety of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of the protective plate in this utility model;

[0018] Figure 3 This is a schematic diagram of the flange body in this utility model;

[0019] Figure 4 In this utility model Figure 3 Enlarged view of point A;

[0020] Figure 5 This is a schematic diagram of the support plate in this utility model.

[0021] Legend: 1. Flange body; 2. Circular plate; 3. Circular rod; 4. Protective plate; 5. Support plate; 6. Sliding rod; 7. L-shaped plate; 8. First spring; 9. Rubber ring; 10. Heat dissipation plate; 11. Heat-resistant layer; 12. Corrosion-resistant layer. Detailed Implementation

[0022] Reference Figure 1-5As shown, this utility model provides a technical solution: a high-strength heat-resistant flange for automotive exhaust pipes, including a flange body 1. A connecting hole is provided on one side of the flange body 1. A circular plate 2 is slidably connected to the surface of the connecting hole. Two connecting holes are provided on the surface of the flange body 1. A circular rod 3 is slidably connected to the surface of each of the two connecting holes. A protective plate 4 is fixedly connected to one end of each of the two circular rods 3. One side of the protective plate 4 is fixedly connected to the circular plate 2. A support plate 5 is fixedly connected to the side of the circular plate 2 away from the protective plate 4. Sliding rods 6 are fixedly connected to both sides of the support plate 5. An L-shaped plate 7 is slidably connected to the arc surface of the sliding rod 6. One side of the L-shaped plate 7 is slidably connected to the circular plate 2, and the other side is slidably connected to the flange body 1. Next, the inner surface of the flange body 1 is provided with a heat-resistant layer 11, and the surface of the flange body 1 is provided with a corrosion-resistant layer 12. When the operator needs to protect the connecting holes and connection holes of the flange body 1, the circular plate 2 is inserted into the connecting hole of the flange body 1, and the two circular rods 3 are respectively inserted into the two connection holes of the flange body 1. At this time, the L-shaped plate 7 is pushed to both sides, and the L-shaped plate 7 slides on the arc surface of the slide rod 6. At this time, the L-shaped plate 7 slides from the surface of the circular plate 2 to the surface of the flange body 1, thus achieving the effect of protecting the connecting holes and connection holes of the flange body 1. This prevents foreign objects such as dust, gravel, and metal shavings from entering the connecting holes and connection holes of the flange body 1 when the flange body 1 is idle, which would cause damage to the connecting holes and connection holes of the flange body 1. Impurities scratching, corroding, or deforming the flange body 1 can cause poor sealing and air leakage when connected to the exhaust pipe, thus reducing the service life of the flange body 1 and the exhaust pipe. To improve the safety of the device, a first spring 8 is fitted onto the arc surface of the slide rod 6. The two ends of the first spring 8 are fixedly connected to the support plate 5 and the L-shaped plate 7, respectively. When the operator releases the L-shaped plate 7, the rebound force of the two first springs 8 causes the two L-shaped plates 7 to move away from each other. At this time, the first springs 8 automatically push the L-shaped plates 7 onto the surface of the flange body 1, reducing the number of steps required for operation and improving work efficiency. A rubber ring 9 is fixedly connected to one side of the L-shaped plate 7. The L-shaped plate 7 is slidably connected to the arc surface of the slide rod 6. When the operator moves the L-shaped plate 7, the L-shaped plate 7 drives the rubber ring 9 to slide on the arc surface of the slide rod 6. At this time, the elasticity of the rubber ring 9 wraps and binds the arc surface of the slide rod 6, thereby slowing down the sliding speed of the L-shaped plate 7 on the arc surface of the slide rod 6. At the same time, it reduces the possibility of unintentional displacement of the L-shaped plate 7 caused by external shaking, thus achieving a damping effect. Several heat dissipation plates 10 are fixedly connected to the surface of the flange body 1. The heat dissipation plates 10 are evenly distributed in a linear array on the surface of the flange body 1. By increasing the heat dissipation area of ​​the flange body 1, the heat dissipation plates 10 significantly improve the heat exchange efficiency, reduce the temperature of the flange body 1, and ensure that the flange body 1 can still maintain high strength and good mechanical properties in high-temperature environments.

[0023] The heat-resistant layer 11 is made of a nickel-based alloy. Nickel-based alloys offer good toughness, allowing them to adapt to the thermal expansion and contraction of the flange body 1 at high temperatures; they also exhibit excellent resistance to sulfidation, resisting the corrosion of sulfides in exhaust gases and extending the service life of the flange body 1. The corrosion-resistant layer 12 is made of galvanized material. The galvanized anti-corrosion layer forms a protective film on the surface of the flange body 1, providing excellent corrosion resistance. Its thickness is typically between tens and hundreds of micrometers, effectively preventing the flange body 1 from being corroded by moisture, oxygen, and some corrosive substances in the external environment.

[0024] Working principle: When protection of the connecting holes and connection holes of flange body 1 is required, the operator inserts the circular plate 2 into the connecting hole of flange body 1, and simultaneously inserts the two circular rods 3 into the two connection holes of flange body 1 respectively. Then, the L-shaped plates 7 are pushed to both sides, allowing them to slide on the arc surface of the sliding rod 6, moving from the surface of the circular plate 2 to the surface of flange body 1. This effectively prevents foreign objects such as dust, gravel, and metal shavings from entering the connecting holes and connection holes, avoiding scratches, corrosion, or deformation of the holes by impurities. It also prevents leaks and poor sealing when flange body 1 is connected to the exhaust pipe, ensuring the service life of flange body 1 and exhaust pipe. When the operator releases the L-shaped plates 7, the first spring 8, which is fitted onto the arc surface of the sliding rod 6, activates. Its rebound force drives the two L-shaped plates 7 to move away from each other, automatically pushing the L-shaped plates 7 onto the surface of flange body 1, simplifying operation. To improve work efficiency, during the movement of the L-shaped plate 7, the rubber ring 9 on one side of the L-shaped plate 7 slides on the arc surface of the slide rod 6. The elasticity of the rubber ring 9 wraps around and restrains the slide rod 6, slowing down the sliding speed of the L-shaped plate 7 and reducing the possibility of unintentional displacement of the L-shaped plate 7 due to external shaking, thus achieving a damping effect. In addition, the heat dissipation plates 10 linearly arrayed on the surface of the flange body 1 increase the heat dissipation area, improve heat exchange efficiency, and reduce the temperature of the flange body 1, enabling it to maintain high strength and good mechanical properties in high-temperature environments. The nickel-based alloy heat-resistant layer 11 on the inner surface adapts to thermal expansion and contraction with good toughness and resists sulfide corrosion in exhaust gas with excellent anti-sulfurization properties. The zinc-plated corrosion-resistant layer 12 on the surface forms a protective film to prevent the flange body 1 from being corroded by external moisture, oxygen, and corrosive substances. The synergistic effect of multiple structures ensures the performance and lifespan of the flange body 1.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

Claims

1. A high-strength heat-resistant flange for automotive exhaust pipes, comprising a flange body, characterized in that: A connecting hole is provided on one side of the flange body. A circular plate is slidably connected to the surface of the connecting hole of the flange body. Two connecting holes are provided on the surface of the flange body. A circular rod is slidably connected to the surface of each of the two connecting holes of the flange body. A protective plate is fixedly connected to one end of each of the two circular rods. One side of the protective plate is fixedly connected to the circular plate. A support plate is fixedly connected to the side of the circular plate away from the protective plate. A sliding rod is fixedly connected to both sides of the support plate. An L-shaped plate is slidably connected to the arc surface of the sliding rod. One side of the L-shaped plate is slidably connected to the circular plate. One side of the L-shaped plate is slidably connected to the flange body. A heat-resistant layer is provided on the inner surface of the flange body. A corrosion-resistant layer is provided on the surface of the flange body.

2. The high-strength heat-resistant flange for automotive exhaust pipes according to claim 1, characterized in that: The arc surface of the slide rod is fitted with a first spring, and the two ends of the first spring are fixedly connected to the support plate and the L-shaped plate, respectively.

3. The high-strength heat-resistant flange for automotive exhaust pipes according to claim 1, characterized in that: A rubber ring is fixedly connected to one side of the L-shaped plate, and the rubber ring is slidably connected to the arc surface of the slide rod.

4. The high-strength heat-resistant flange for automotive exhaust pipes according to claim 1, characterized in that: Several heat dissipation plates are fixedly connected to the surface of the flange body, and the heat dissipation plates are evenly distributed in a linear array on the surface of the flange body.

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