Motorcycle exhaust pipe exhaust gas catalytic purification device

Abstract

The utility model relates to catalytic purification device technical field, especially a kind of motorcycle exhaust pipe exhaust gas catalytic purification device, including outer tube, arc-shaped protective plate and two symmetrically arranged arc-shaped splicing plates, the inside fixedly connected with three-way catalytic converter of outer tube, the outer surface of outer tube is sleeved with two symmetrically arranged clamps.The utility model has the advantages that arc-shaped splicing plate and arc-shaped protective plate are spliced to form integral protective structure by positioning pin, further enhance the resistance ability to external impact, avoid outer tube and internal three-way catalytic converter direct stress.Arc-shaped protective plate and arc-shaped splicing plate form combined protective structure, can effectively block external impact, avoid outer tube and three-way catalytic converter directly contact with colliding object, reduce the risk of indentation, scratching and deformation, reduce the influence of impact force on device overall structure, solve the problem that existing device lacks protection and buffering design and weak impact resistance, prolong the service life of three-way catalytic converter.

Description

Technical Field

[0001] This utility model relates to the field of catalytic purification device technology, and in particular to a catalytic purification device for exhaust gas from a motorcycle exhaust pipe. Background Technology

[0002] A motorcycle exhaust catalytic converter is an environmentally friendly device installed in the motorcycle's exhaust system that reduces the content of harmful pollutants in exhaust gases through a catalytic reaction. Its core components include a shell, a catalyst carrier, and a support structure. The surface of the catalyst carrier is typically coated with precious metal catalysts such as platinum, rhodium, and palladium. The device works by utilizing the high temperature of the engine exhaust gases to induce an oxidation-reduction reaction between the catalyst and carbon monoxide, hydrocarbons, and nitrogen oxides in the exhaust gases, converting these harmful gases into harmless carbon dioxide, water, and nitrogen, thereby reducing the environmental pollution caused by motorcycle exhaust.

[0003] Existing motorcycle exhaust catalytic converters are significantly inadequate in terms of impact resistance and deformation prevention, making them ill-suited to handle collision risks under complex road conditions. Because they are typically installed in the middle section of the exhaust pipe near the underside of the vehicle, they are prone to collisions with the ground, protruding objects, or flying stones during vehicle operation, especially when traversing potholes, gravel roads, or speed bumps. Furthermore, the outer casing of these converters is often a thin metal structure, lacking effective protection and cushioning design, making the outer surface susceptible to dents, scratches, and even deformation after a collision. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to provide a catalytic purification device for motorcycle exhaust pipes to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides a catalytic converter for exhaust gas from a motorcycle exhaust pipe, comprising an outer cylinder, an arc-shaped protective plate, and two symmetrically arranged arc-shaped splicing plates. A three-way catalytic converter is fixedly connected inside the outer cylinder. Two symmetrically arranged clamps are fitted onto the outer surface of the outer cylinder, and the outer cylinder is mounted on the motorcycle body via the two clamps. A mounting bracket is fixedly connected to the outer surface of each clamp. Two symmetrically arranged frames are fixedly connected to the inner wall of the arc-shaped protective plate, and the two frames are respectively inserted into the two mounting brackets. Two symmetrically arranged control plates are slidably connected to the inner wall of each frame, and a spring is fixedly connected between the two control plates. A locking pin is fixedly connected to the side of each control plate away from the spring, and both locking pins penetrate the frame and engage with the mounting bracket. A splicing frame is fixedly connected to the inner wall of one side of each arc-shaped splicing plate, and a locking bolt is rotatably connected to one side of the splicing frame. The threaded portions of the two locking bolts are threadedly connected to the two mounting brackets respectively.

[0007] Preferably, each of the above-mentioned solutions has a threaded hole on one side, and the threaded portions of the two locking bolts are threadedly connected to the two mounting brackets through the threaded holes.

[0008] Preferably, in any of the above schemes, each of the arc-shaped splicing plates has two positioning pins fixedly connected to one end near the arc-shaped protective plate, and several positioning pins are respectively inserted into both ends of the arc-shaped protective plate.

[0009] Preferably, in any of the above solutions, the inner wall of the mounting bracket has two symmetrically arranged snap-fit ​​holes, and both snap-fit ​​pins penetrate the frame and snap-fit ​​with the mounting bracket through the snap-fit ​​holes.

[0010] Preferably, in any of the above embodiments, the splicing frame is fixedly connected to a baffle plate on one side near the arc-shaped protective plate, and the baffle plate is located between the two control plates.

[0011] Preferably, in any of the above embodiments, the outer cylinder is located above the arc-shaped protective plate, and the arc-shaped protective plate is located between two arc-shaped splicing plates.

[0012] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows: 1. When the device encounters ground protrusions or flying stones, the arc-shaped protective plate first contacts the impacting object, using its arc-shaped structure to disperse the impact force. If the impact force is large, the arc-shaped protective plate transmits the force to the mounting bracket through the frame. Simultaneously, the arc-shaped splicing plate and the arc-shaped protective plate are joined together by positioning pins to form an integrated protective structure, further enhancing resistance to external impacts and preventing direct stress on the outer cylinder and the internal three-way catalytic converter. The combined protective structure formed by the arc-shaped protective plate and the arc-shaped splicing plate effectively blocks external impacts, preventing direct contact between the outer cylinder and the three-way catalytic converter and the impacting object, reducing the risk of dents, scratches, and deformation, and minimizing the impact on the overall structure of the device. This solves the problem of weak impact resistance in existing devices due to a lack of protective and buffering design, and extends the service life of the three-way catalytic converter.

[0013] 2. During disassembly, first loosen the locking bolts to separate the arc-shaped splicing plate from the mounting frame. Then, pull out the positioning pins and remove the two arc-shaped splicing plates from both ends of the arc-shaped protective plate. Next, press the compression springs on the two control plates to disengage the locking pins from the locking holes of the mounting frame, allowing the arc-shaped protective plate and frame to be removed from the mounting frame. If any component is damaged, only the damaged arc-shaped protective plate, arc-shaped splicing plate, or related accessories need to be replaced; the entire device does not need to be replaced. The locking bolts and splicing frame work together, the positioning pins insert into the frame, and the locking pins engage with the locking holes, enabling quick disassembly of the arc-shaped protective plate and arc-shaped splicing plate. The modular design allows for independent assembly and disassembly of each component. When a component is damaged, the entire device does not need to be replaced; only the damaged part needs to be replaced, reducing unnecessary material waste, lowering maintenance costs, and solving the problems of inconvenient maintenance and high replacement costs associated with traditional integrated structures. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the assembly of this utility model; Figure 2 This is a cross-sectional structural diagram of the assembly of this utility model; Figure 3 This is an exploded structural diagram of the assembly of this utility model; Figure 4 This is a schematic diagram of the outer cylinder of this utility model; Figure 5 This is a structural schematic diagram of the arc-shaped splicing plate of this utility model; Figure 6 This is a schematic diagram of the structure at point A of this utility model.

[0015] In the diagram: 1-Outer cylinder, 2-Arc-shaped protective plate, 3-Arc-shaped splicing plate, 4-Three-way catalytic converter, 5-Clamp, 6-Mounting bracket, 7-Frame, 8-Control panel, 9-Spring, 10-Snap-fit ​​pin, 11-Splicing bracket, 12-Locking bolt, 13-Positioning pin, 14-Snap-fit ​​hole, 15-Group baffle, 16-Threaded hole. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings, but the scope of protection of the present invention is not limited thereto.

[0017] like Figures 1 to 6 As shown, a motorcycle exhaust gas catalytic purification device includes an outer cylinder 1, an arc-shaped protective plate 2, and two symmetrically arranged arc-shaped splicing plates 3. A three-way catalytic converter 4 is fixedly connected inside the outer cylinder 1. Two symmetrically arranged clamps 5 are fitted onto the outer surface of the outer cylinder 1, and the outer cylinder 1 is mounted on the motorcycle body through the two clamps 5. A mounting bracket 6 is fixedly connected to the outer surface of each clamp 5. Two symmetrically arranged frames 7 are fixedly connected to the inner wall of the arc-shaped protective plate 2. The two frames 7 are respectively inserted into the two mounting brackets 6. Two symmetrically arranged control plates 8 are slidably connected to the inner wall of each frame 7. A spring 9 is fixedly connected between the two control plates 8. A locking pin 10 is fixedly connected to the side of each control plate 8 away from the spring 9. Both locking pins 10 pass through the frame 7 and are engaged with the mounting bracket 6. A splicing frame 11 is fixedly connected to the inner wall of one side of each arc-shaped splicing plate 3. A locking bolt 12 is rotatably connected to one side of the splicing frame 11. The threaded parts of the two locking bolts 12 are threadedly connected to the two mounting brackets 6 respectively.

[0018] As an optional technical solution of this utility model, each mounting bracket 6 has a threaded hole 16 on one side. The threaded parts of the two locking bolts 12 are respectively threaded to the two mounting brackets 6 through the threaded hole 16. The threaded hole 16 on one side of each mounting bracket 6 provides a precise threaded connection position for the locking bolts 12, so that the locking bolts 12 can stably fix the splicing frame 11 of the arc splicing plate 3 to the mounting bracket 6, ensuring the firmness of the arc splicing plate 3 after installation, and preventing the arc splicing plate 3 from loosening due to vibration during motorcycle operation. At the same time, the threaded connection also facilitates quick tightening or loosening, improving the efficiency of disassembly and assembly.

[0019] As an optional technical solution of this utility model, each arc-shaped splicing plate 3 is fixedly connected to two positioning pins 13 at one end near the arc-shaped protective plate 2. Several positioning pins 13 are respectively inserted into both ends of the arc-shaped protective plate 2. The positioning pins 13 at one end of each arc-shaped splicing plate 3 near the arc-shaped protective plate 2 can play a precise positioning role when the arc-shaped splicing plate 3 and the arc-shaped protective plate 2 are spliced ​​together, ensuring that the two are aligned after splicing, forming a complete protective structure, preventing gaps at the splicing point from affecting the protective effect, and also simplifying the splicing and installation operation process.

[0020] As an optional technical solution of this utility model, the inner wall of the mounting bracket 6 has two symmetrically arranged snap-fit ​​holes 14. Both snap-fit ​​pins 10 penetrate the frame 7 and snap-fit ​​with the mounting bracket 6 through the snap-fit ​​holes 14. The two snap-fit ​​holes 14 on the inner wall of the mounting bracket 6 cooperate with the snap-fit ​​pins 10 to make the connection between the frame 7 and the mounting bracket 6 more stable, prevent the frame 7 from shaking or falling off in the mounting bracket 6, and ensure that the arc-shaped protective plate 2 can be stably installed on the mounting bracket 6, thereby continuously playing a protective role. At the same time, the snap-fit ​​structure also facilitates the quick assembly and disassembly of the frame 7.

[0021] As an optional technical solution of this utility model, the splicing frame 11 is fixedly connected to one end near the arc-shaped protective plate 2 and a baffle 15 is fixedly connected to the other side. The baffle 15 is located between the two control plates 8. The baffle 15 at the end of the splicing frame 11 near the arc-shaped protective plate 2 is located between the two control plates 8 and can limit the control plates 8, preventing the control plates 8 from sliding excessively when the device is impacted or vibrated, which would cause the spring 9 to deform or the locking pin 10 to disengage from the locking hole 14, thus ensuring the stable operation of the buffer mechanism and enhancing the reliability of the device structure.

[0022] As an optional technical solution of this utility model, the outer cylinder 1 is located above the arc-shaped protective plate 2, and the arc-shaped protective plate 2 is located between two arc-shaped splicing plates 3. This positional distribution allows the arc-shaped protective plate 2 and the arc-shaped splicing plate 3 to fully cover the outer side of the outer cylinder 1, forming an all-round protective barrier, effectively blocking collisions and impacts from different directions, and protecting the outer cylinder 1 and the internal three-way catalytic converter 4 from damage to the greatest extent.

[0023] A catalytic converter for exhaust gas purification in motorcycle exhaust pipes operates on the following principle: 1) When the device encounters ground protrusions or flying stones, the arc-shaped protective plate 2 first contacts the impacting object and disperses the impact force using its arc-shaped structure; if the impact force is large, the arc-shaped protective plate 2 transmits the force to the mounting frame 6 through the frame 7.

[0024] 2): The arc-shaped splicing plate 3 and the arc-shaped protective plate 2 are spliced ​​together by the positioning pin 13 to form an overall protective structure, which further enhances the resistance to external impact and avoids the outer cylinder 1 and the internal three-way catalytic converter 4 from being directly subjected to force.

[0025] 3): The combined protective structure formed by the shaped protective plate 2 and the arc-shaped splicing plate 3 can effectively block external impacts, prevent the outer cylinder 1 and the three-way catalytic converter 4 from directly contacting the impacting object, and reduce the risk of dents, scratches and deformation.

[0026] In summary, when the motorcycle exhaust catalytic converter is impacted by ground protrusions or flying stones, the arc-shaped protective plate 2 first contacts the impacting object, using its arc-shaped structure to disperse the impact force. If the impact force is large, the arc-shaped protective plate 2 transmits the force to the mounting bracket 6 through the frame 7. At the same time, the arc-shaped splicing plate 3 and the arc-shaped protective plate 2 are spliced ​​together by the positioning pin 13 to form an overall protective structure, further enhancing the resistance to external impacts and preventing the outer cylinder 1 and the internal three-way catalytic converter 4 from being directly subjected to force. The combined protective structure formed by the arc-shaped protective plate 2 and the arc-shaped splicing plate 3 can effectively block external impacts, prevent the outer cylinder 1 and the three-way catalytic converter 4 from directly contacting the impacting object, reduce the risk of dents, scratches and deformation, reduce the impact of impact on the overall structure of the device, solve the problem of weak impact resistance of existing devices due to lack of protection and buffer design, and extend the service life of the three-way catalytic converter 4. When disassembling, first loosen the locking bolt 12 to separate the splicing frame 11 of the arc-shaped splicing plate 3 from the mounting frame 6, then pull out the positioning pin 13 and remove the two arc-shaped splicing plates 3 from both ends of the arc-shaped protective plate 2; then press the two control plates 8 to compress the spring 9, so that the locking pin 10 disengages from the locking hole 14 of the mounting frame 6, and the arc-shaped protective plate 2 together with the frame 7 can be removed from the mounting frame 6; if a certain component is damaged, only the damaged arc-shaped protective plate 2, arc-shaped splicing plate 3 or related accessories need to be replaced, without replacing the entire device. By using the locking bolt 12 to engage with the splicing frame 11, the insertion structure of the positioning pin 13, and the snap-fit ​​design of the snap-fit ​​pin 10 and the snap-fit ​​hole 14, the arc-shaped protective plate 2 and the arc-shaped splicing plate 3 can be quickly disassembled, making the operation simple. The split design allows each component to be disassembled and assembled independently. When a component is damaged, it is not necessary to replace the entire device; only the damaged part needs to be replaced, which reduces unnecessary material waste, lowers maintenance costs, and solves the problems of inconvenient maintenance and high replacement costs of traditional integrated structures.

Claims

1. A catalytic purification device for motorcycle exhaust pipe gas, characterized in that: The system includes an outer cylinder (1), an arc-shaped protective plate (2), and two symmetrically arranged arc-shaped splicing plates (3). A three-way catalytic converter (4) is fixedly connected inside the outer cylinder (1). Two symmetrically arranged clamps (5) are fitted onto the outer surface of the outer cylinder (1). The outer cylinder (1) is mounted on the motorcycle body via the two clamps (5). A mounting bracket (6) is fixedly connected to the outer surface of each clamp (5). Two symmetrically arranged frames (7) are fixedly connected to the inner wall of the arc-shaped protective plate (2). The two frames (7) are respectively inserted into the two mounting brackets (6). Each frame (7) 7) has two symmetrically arranged control plates (8) slidingly connected to the inner wall. A spring (9) is fixedly connected between the two control plates (8). A snap-fit ​​pin (10) is fixedly connected to the side of each control plate (8) away from the spring (9). Both snap-fit ​​pins (10) pass through the frame (7) and snap-fit ​​with the mounting bracket (6). A splicing frame (11) is fixedly connected to the inner wall of one side of each arc splicing plate (3). A locking bolt (12) is rotatably connected to one side of the splicing frame (11). The threaded parts of the two locking bolts (12) are threadedly connected to the two mounting brackets (6) respectively.

2. The catalytic purification device for motorcycle exhaust pipe as described in claim 1, characterized in that: Each of the mounting brackets (6) has a threaded hole (16) on one side, and the threaded parts of the two locking bolts (12) are threadedly connected to the two mounting brackets (6) through the threaded hole (16).

3. The catalytic purification device for motorcycle exhaust pipe as described in claim 2, characterized in that: Each of the arc-shaped splicing plates (3) has two fixedly connected positioning pins (13) at one end near the arc-shaped protective plate (2), and several positioning pins (13) are respectively inserted into both ends of the arc-shaped protective plate (2).

4. The catalytic purification device for motorcycle exhaust pipe as described in claim 3, characterized in that: The inner wall of the mounting bracket (6) has two symmetrically arranged snap-fit ​​holes (14), and the two snap-fit ​​pins (10) pass through the frame (7) and snap-fit ​​with the mounting bracket (6) through the snap-fit ​​holes (14).

5. The catalytic purification device for motorcycle exhaust pipe as described in claim 4, characterized in that: The splicing frame (11) is fixedly connected to one end near the arc-shaped protective plate (2) and a baffle (15) is fixedly connected to one side. The baffle (15) is located between the two control plates (8).

6. The catalytic converter for exhaust gas purification in a motorcycle exhaust pipe according to claim 5, characterized in that: The outer cylinder (1) is located above the arc-shaped protective plate (2), which is located between two arc-shaped splicing plates (3).

Images