Exhaust system double hook structure

Abstract

The utility model relates to the field of automobile exhaust system, disclose a kind of exhaust system double hook structure, including the base for being installed in longitudinal beam, base is longitudinally provided with double-row support structure, and double-row support structure top is provided with the installation position for placing exhaust pipe. Longitudinal double-row support rod includes first support rod and second support rod from below to above, first support rod is fixed with second support rod, and first support rod and second support rod are connected with base, and the connecting position of first support rod and base and the connecting position of second support rod and base are perpendicular. By the connecting position of first support rod and second support rod and base is set to vertical, since double-row support structure top is subjected to the vibration pressure of exhaust pipe, the support performance of double-row support structure can be improved by the two directions of base mutually perpendicular.

Description

Technical Field

[0001] This utility model relates to the field of automotive exhaust systems, specifically to a dual-hook structure for an exhaust system. Background Technology

[0002] Car exhaust pipes are indeed secured using hooks. The main function of the hooks is to suspend the exhaust pipe from the car body, thereby preventing the exhaust pipe from directly contacting the car body, reducing vibration transmission to the car body, and protecting the exhaust pipe from damage.

[0003] Currently, exhaust hooks in automotive exhaust systems are typically made of a solid pipe. This design is simple and prone to significant vibrations in the low-frequency range. Specifically, the first-order vibration frequency (the frequency most likely to resonate) of this structure is usually below 180Hz, while the engine emits vibrations at frequencies of 100-300Hz during operation. Therefore, the exhaust hook can easily resonate with the engine's vibration frequency. Since the exhaust hook is mounted on the longitudinal beam of the vehicle body, the vibration is transmitted to the interior through the longitudinal beam, resulting in a booming sound and abnormal noises inside the vehicle. These abnormal noises are then transmitted to the vehicle body, affecting passenger comfort. Utility Model Content

[0004] The present invention aims to provide a dual-hook structure for an exhaust system to solve the problem of resonance between existing hooks and the engine.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a double-hook structure for an exhaust system, including a base for installation on a longitudinal beam, the base having a double-row support structure arranged longitudinally, and the top of the double-row support structure having an installation position for placing an exhaust pipe.

[0006] The beneficial effects of this solution are as follows: by setting up a double-row support structure, and the double-row support structure is arranged longitudinally, and the installation position is set at the top of the double-row support structure, the existing single-row hook is improved to a double-row hook structure. The first-order bending mode frequency of the double row is increased from 170HZ to 360HZ (+111%), which is away from the main excitation frequency band of the engine. The double-row support structure can effectively reduce vibration acceleration.

[0007] Furthermore, the longitudinal double-row support rods include a first support rod and a second support rod from bottom to top. The first support rod and the second support rod are fixed together, and both the first support rod and the second support rod are connected to the base. The connection point between the first support rod and the base and the connection point between the second support rod and the base are perpendicular.

[0008] The beneficial effects of this solution are as follows: by setting the connection position of the first support rod and the second support rod to the base to be perpendicular, the support performance of the double-row support structure can be improved through the two mutually perpendicular directions of the base, since the top of the double-row support structure is subjected to the vibration pressure of the exhaust pipe.

[0009] Furthermore, the first support rod includes a vertically arranged first fixed rod and a first inclined rod fixedly connected thereto, and the second support rod includes a horizontally arranged second fixed rod and a second inclined rod fixedly connected thereto, with the first inclined rod and the second inclined rod having the same inclination angle and being fixedly connected.

[0010] Furthermore, the second support rod also includes a horizontal rod fixedly connected to the second inclined rod. A positioning rod is vertically installed at the end of the horizontal rod away from the second inclined rod. A positioning element is provided on the horizontal rod, and the installation position is formed between the positioning rod and the positioning element.

[0011] Furthermore, both the first and second support rods are hollow tubular in shape.

[0012] The beneficial effects of this solution are as follows: By setting both the first and second support rods as tubular structures, firstly, compared with the existing technology, the structure is lightweight, which can reduce weight and save costs in both production and transportation. Secondly, the exhaust pipe has a high temperature during vehicle operation, and the double-row support structure is connected to the exhaust pipe, so the temperature will rise sharply. The hook structure in the existing technology is not conducive to heat dissipation, and it will affect the mechanical performance of the structure after long-term use. However, the hollow tubular structure used in this solution can effectively dissipate heat and maintain the stability of the structure.

[0013] Furthermore, a fixed cylinder is horizontally fixed to the base, a second fixed rod is rotatably connected to the fixed cylinder, and an elastic element is connected between the first tilting rod and the second tilting rod.

[0014] The beneficial effects of this solution are as follows: The second support rod is rotatably connected to the base through the second fixed rod and the fixed cylinder. However, since the second tilting rod and the first tilting rod are fixedly connected, and the first support rod is fixedly connected to the base through the first fixed rod, the second tilting rod and the first tilting rod are also fixedly connected. Therefore, when the vehicle body is subjected to a violent impact or vibration, the fixed connection between the first support rod and the second support rod cannot relieve the force, which will lead to damage or scrapping of the double-row support structure. Therefore, the elastic element can effectively ensure the safety of the connection between the two and slightly reduce the vibration between the first tilting rod and the second tilting rod. In addition, the rotatable connection between the second fixed rod and the fixed cylinder can buffer the violent up-and-down shaking of the double-row shock absorption structure and prevent damage to the support.

[0015] Furthermore, the inner cavity of the first tilting rod is connected to the inner cavity of the second tilting rod.

[0016] The beneficial effects of this solution are as follows: if the vehicle drives into a deeper area of ​​water, some water will enter the second support rod through the horizontal bar, which can easily cause the support rod to rust. By connecting the two, the water can pass through the second inclined bar to the first inclined bar and finally be discharged through the first fixed bar.

[0017] Furthermore, the positioning element is threadedly connected to the horizontal bar.

[0018] The beneficial effects of this solution are as follows: when the exhaust pipe is connected to the installation position, by rotating the positioning component and pressing it against the exhaust pipe, the exhaust pipe is pressed between the positioning component and the positioning rod, thereby stably installing the exhaust pipe on the double-row support structure. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention; Figure 2 This is a schematic cross-sectional view of the overall structure of Embodiment 1 of this utility model; Figure 3 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model; Figure 4 This is a schematic cross-sectional view of the overall structure of Embodiment 2 of this utility model. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: base 1, double-row support structure 11, mounting position 12, fixing cylinder 13, first support rod 2, first fixing rod 21, first tilting rod 22, second support rod 3, second fixing rod 31, second tilting rod 32, horizontal rod 33, positioning rod 34, positioning element 35, elastic element 4, and longitudinal beam 5.

[0021] Example 1 like Figures 1-2 The exhaust system double-hook structure shown includes a base 1, which is bolted to the web of a vehicle body longitudinal beam 5. A double-row support structure 11 is welded to the base 1. The double-row support structure 11 has a first support rod 2 and a second support rod 3 arranged longitudinally from bottom to top. Both the first support rod 2 and the second support rod 3 are hollow tubular. The first support rod 2 includes a vertical first fixing rod 21 and an inclined first tilting rod 22, which are integrally formed. The first fixing rod 21 is fixedly welded to the base 1. The second support rod 3 includes a horizontally arranged second fixing rod 31 and... The second inclined rod 32 is inclined and the second support rod 3 and the second inclined rod 32 are also integrally formed. The second fixed tube is horizontally welded to the base 1. At the same time, the first inclined rod 22 and the second inclined rod 32 are fixedly welded. The end of the second inclined rod 32 away from the base 1 is connected to a horizontal rod 33. The second fixed rod 31, the second inclined rod 32 and the horizontal rod 33 are all integrally formed. The end of the horizontal rod 33 away from the second inclined rod 32 is vertically set with a positioning rod 34. A positioning part 35 is also fixedly welded on the horizontal rod 33. The positioning part 35 and the positioning rod 34 on the horizontal rod 33 form an installation position 12 for placing the exhaust pipe.

[0022] Example 2 like Figures 3-4 As shown, the difference between Embodiment 2 and Embodiment 1 is that: a connecting hole is provided between the second tilting rod 32 and the first tilting rod 22, and the inner cavity of the first tilting rod 22 and the inner cavity of the second tilting rod 32 are connected through the connecting hole. In addition, an elastic element 4 is provided between the tilting rod and the first tilting rod 22. A buffer platform is fixed on the inner wall of both the first tilting rod 22 and the second tilting rod 32, and the buffer platforms on the first tilting rod 22 and the second tilting rod 32 are directly opposite each other through the connecting hole. The elastic element 4 is connected between the corresponding buffer platforms on the first tilting rod 22 and the second tilting rod 32. The elastic element 4 is set as a spring and passes through the connecting hole.

[0023] A fixed cylinder 13 is fixedly welded to the base 1. The second fixed rod 31 is rotatably connected to the fixed cylinder 13 through a bearing. The outer ring of the horizontal rod 33 is provided with a threaded groove. The inner ring of the positioning member 35 is sleeved on the horizontal rod 33 and threadedly connected to the horizontal rod 33. The threaded groove on the horizontal rod 33 is set as a right-hand thread from the base plate to the positioning rod 34. Therefore, when the exhaust pipe is placed between the positioning member 35 and the positioning rod 34, the positioning member 35 is rotated and the positioning member 35 abuts against the exhaust pipe, thereby fixing the exhaust pipe on the mounting position 12.

[0024] When the vehicle body is subjected to a violent impact or a severe fall, the exhaust pipe will vibrate violently due to inertia. At this time, the second tilting rod 32 transmits the inertial force to the second fixed rod 31. Since the second fixed rod 31 can rotate on the fixed cylinder 13, it can effectively alleviate the large vibration of the second support rod 3. At the same time, when subjected to a violent impact, the pressure between the second tilting rod 32 and the first tilting rod 22 is large. The elastic element 4 can effectively buffer the impact and prevent damage to the support rod. In addition, when some water enters the second support rod 3 during vehicle operation, the water enters the first support rod 2 through the connecting hole, preventing internal rust.

[0025] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A double-hook structure for an exhaust system, characterized in that: It includes a base for installation on the longitudinal beam, the base having a double-row support structure in the longitudinal direction, and an installation position for placing an exhaust pipe at the top of the double-row support structure; the longitudinal double-row support rods include a first support rod and a second support rod from bottom to top, the first support rod and the second support rod are fixed together, and both the first support rod and the second support rod are connected to the base, the connection position of the first support rod to the base and the connection position of the second support rod to the base are perpendicular.

2. The double-hook structure according to claim 1, characterized in that: The first support rod includes a vertically arranged first fixed rod and a first inclined rod fixedly connected thereto. The second support rod includes a horizontally arranged second fixed rod and a second inclined rod fixedly connected thereto. The first inclined rod and the second inclined rod have the same inclination angle and are fixedly connected.

3. The double-hook structure according to claim 2, characterized in that: The second support rod also includes a horizontal rod that is fixedly connected to the second inclined rod. A positioning rod is vertically installed at the end of the horizontal rod away from the second inclined rod. A positioning element is provided on the horizontal rod, and the installation position is formed between the positioning rod and the positioning element.

4. The double-hook structure according to claim 3, characterized in that: Both the first and second support rods are hollow tubular in shape.

5. The double-hook structure according to claim 4, characterized in that: The base is horizontally fixed to a fixed cylinder, the second fixed rod is rotatably connected to the fixed cylinder, and an elastic element connects the first tilting rod and the second tilting rod.

6. The double-hook structure according to claim 4, characterized in that: The inner cavity of the first tilting rod is connected to the inner cavity of the second tilting rod.

7. The double-hook structure according to claim 3, characterized in that: The positioning element is threadedly connected to the horizontal bar.

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