Exhaust and noise elimination structure of passenger car

Abstract

The utility model relates to the technical field of vehicle exhaust and noise elimination structures, in particular to a passenger vehicle exhaust and noise elimination structure which comprises a shell, the front side of the shell is communicated with a communicating pipe, the surface of the shell is fixedly sleeved with a fixing plate, and the surface of the fixing plate is provided with a heat dissipation mechanism. Heat on the surface of the shell is guided out through the heat-conducting fins, the shell is cooled through the heat-conducting fins, the heat-conducting fins are blown through the cooling fan, and the heat on the surface of the heat-conducting fins is dissipated through high-speed gas, so that the heat of the shell is prevented from being too high, and automobile exhaust is prevented from entering the gas guide pipe through the communicating pipe; tail gas and noise are dissipated through holes in the surface of the gas guide pipe, the threaded rod is driven to move up and down by rotating the threaded sleeve, the extending length of the threaded rod is adjusted, after the threaded rod is adjusted to a proper position, the threaded rod is installed in the automobile through the preset bolt, and when vibration occurs again, the shell drives the fixing plate to move up and down.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle exhaust silencer structures, in particular to an exhaust silencer structure for a passenger vehicle. Background Art

[0002] The car muffler is a part used to reduce the noise generated by the engine of a motor vehicle. Since the difference in length between the two pipes is equal to half the wavelength of the sound waves emitted by the car, the two sound waves interfere and cancel each other out when superimposed, thereby reducing the sound intensity and reducing the sound, thereby achieving a silencing effect.

[0003] After searching, the patent number is CN206487542U, and the name is a utility model of a catalytic muffler assembly for commercial vehicles, including a housing, a catalytic unit, a muffler unit, a baffle, an intake muffler pipe, a NOx sensor, a front temperature sensor and a rear temperature sensor. Through research and analysis, it is found that although it has the advantages of simple and reasonable structural design, can increase the decomposition distance of urea, make urea fully decompose and prevent the formation of urea crystals, high catalytic reaction efficiency, and good noise reduction effect, but it still has the following disadvantages to a certain extent.

[0004] For example, during the use of the device, it is not convenient to cool the surface. The surface temperature of the muffler is too high, which can easily damage the device and reduce the service life of the device. It is not convenient to resist earthquakes. After installation, a large amount of vibration will be generated during the driving of the car, which will damage the muffler and make it inconvenient for normal use of the device. In order to solve the above technical problems, we have designed a passenger car exhaust silencer structure. Utility Model Content

[0005] The utility model aims to provide an exhaust silencer structure for a passenger car, which has the advantages of cooling and shock resistance, and solves the problems that during use of the device, it is not convenient to cool the surface, the surface temperature of the silencer is too high, which easily causes damage to the device and reduces the service life of the device, and it is not convenient to resist shock. After installation, a large amount of vibration will be generated during the driving of the car, and the vibration will damage the silencer, making it inconvenient for normal use of the device.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a passenger car exhaust silencer structure, comprising a shell, the front side of the shell is connected to a connecting pipe, the surface of the shell is fixed with a fixing plate, the surface of the fixing plate is provided with a heat dissipation mechanism, the surface of the fixing plate is provided with an anti-vibration mechanism, and the inner cavity of the shell is provided with a silencer mechanism.

[0007] Preferably, the heat dissipation mechanism includes a noise reduction shell, the opposite side of the fixing plate is connected to the noise reduction shell by bolts, the surface of the shell is covered with sound-absorbing cotton, the surface of the noise reduction shell is welded with an L-shaped plate, the opposite side of the L-shaped plate is connected to an installation frame by bolts, and the inner wall of the installation frame is connected to a cooling fan by bolts.

[0008] Preferably, the anti-seismic mechanism includes a mounting plate, the surface of the fixed plate is welded to the mounting plate, a damper is connected to the opposite side of the mounting plate by bolts, the bottom of the damper is connected to a movable plate by bolts, the top of the movable plate is connected to a mounting sleeve by bolts, the top of the mounting sleeve is rotatably connected to a threaded sleeve, a threaded rod is penetrated through the top of the threaded sleeve, the surface of the threaded rod is threadedly connected to the threaded sleeve, the top of the movable plate is connected to a spring by bolts, and the top of the spring is connected to the mounting plate by bolts.

[0009] Preferably, a guide rod is connected to the opposite side of the mounting plate via bolts, the surface of the guide rod is slidably connected to the movable plate, and the surface of the mounting sleeve is slidably connected to the mounting plate.

[0010] Preferably, the silencer mechanism includes a heat conducting plate, the surface of the shell is welded to the heat conducting plate, an isolation plate is welded to the inner wall of the shell, an air duct is connected to the opposite side of the isolation plate, an air duct is connected to the rear side of the connecting tube, and the rear side of the isolation plate is connected to the shell through a pipeline.

[0011] Preferably, a groove is formed on the surface of the heat conducting plate, a baffle is welded to the inner wall of the shell, and the front side of the air guide pipe penetrates to the front side of the baffle.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model conducts heat from the shell surface through the heat conducting sheet, cools the shell through the heat conducting sheet, blows air to the heat conducting sheet through the cooling fan, and dissipates the heat on the surface of the heat conducting sheet through high-speed gas, thereby preventing the shell from being overheated. The automobile exhaust enters the air duct through the connecting pipe, and the exhaust gas and noise are dissipated through the holes on the surface of the air duct. Then the noise and exhaust gas form a cycle in the shell through the ventilation pipe, and the noise is reduced through the mutual interference between the noises. Then the exhaust gas is discharged through the pipeline, and the noise is absorbed by the sound-absorbing cotton, and the noise is isolated by the noise reduction shell, thereby enhancing the anti-noise effect;

[0014] 2. The utility model drives the threaded rod to move up and down by rotating the threaded sleeve, adjusts the extension length of the threaded rod, and after adjusting to a suitable position, installs the threaded rod into the car through the preset bolts. When vibration occurs again, the housing drives the fixing plate to move up and down, the fixing plate drives the mounting plate to move up and down, the mounting plate drives the spring to move in extension and contraction for buffering, and the damper drives the damping movement for shock resistance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is the axonometric drawing of the structure of the utility model;

[0016] Figure 2 A three-dimensional diagram of the noise reduction housing and the cooling fan of the utility model;

[0017] Figure 3 A three-dimensional diagram of the mounting plate and threaded rod of the utility model;

[0018] Figure 4 It is a stereoscopic diagram of the housing and the vent pipe of the utility model.

[0019] In the figure: 1. Shell; 2. Connecting pipe; 3. Fixed plate; 4. Heat conducting plate; 5. Noise reduction shell; 6. Sound absorbing cotton; 7. L-shaped plate; 8. Mounting frame; 9. Cooling fan; 10. Mounting plate; 11. Damper; 12. Movable plate; 13. Spring; 14. Guide rod; 15. Mounting sleeve; 16. Threaded sleeve; 17. Threaded rod; 18. Air duct; 19. Isolation plate; 20. Ventilation pipe; 21. Heat dissipation mechanism; 22. Anti-vibration mechanism; 23. Silencing mechanism. DETAILED DESCRIPTION

[0020] See also Figure 1-Figure 4 A passenger car exhaust silencer structure includes a shell 1, a connecting pipe 2 is connected to the front side of the shell 1, a fixing plate 3 is fixedly sleeved on the surface of the shell 1, a heat dissipation mechanism 21 is arranged on the surface of the fixing plate 3, an anti-vibration mechanism 22 is arranged on the surface of the fixing plate 3, and a silencer mechanism 23 is arranged in the inner cavity of the shell 1.

[0021] See also Figure 1 and Figure 2 The heat dissipation mechanism 21 includes a noise reduction shell 5, and the opposite side of the fixing plate 3 is connected to the noise reduction shell 5 by bolts. The surface of the shell 1 is provided with sound-absorbing cotton 6. By providing the sound-absorbing cotton 6, it is convenient to absorb the sound and reduce the sound intensity. An L-shaped plate 7 is welded on the surface of the noise reduction shell 5, and the opposite side of the L-shaped plate 7 is connected to the installation frame 8 by bolts, and the inner wall of the installation frame 8 is connected to the cooling fan 9 by bolts.

[0022] See also Figure 1 and Figure 3The anti-seismic mechanism 22 includes a mounting plate 10, the surface of the fixed plate 3 is welded to the mounting plate 10, a damper 11 is connected to the opposite side of the mounting plate 10 by bolts, the bottom of the damper 11 is connected to a movable plate 12 by bolts, the top of the movable plate 12 is connected to a mounting sleeve 15 by bolts, the top of the mounting sleeve 15 is rotatably connected to a threaded sleeve 16, a threaded rod 17 is penetrated through the top of the threaded sleeve 16, the surface of the threaded rod 17 is threadedly connected to the threaded sleeve 16, the top of the movable plate 12 is connected to a spring 13 by bolts, by setting the movable plate 12, the damper 11 and the spring 13 can be easily installed, and the damper 11 and the spring 13 can work normally, and the top of the spring 13 is connected to the mounting plate 10 by bolts.

[0023] See also Figure 3 A guide rod 14 is connected to the opposite side of the mounting plate 10 by bolts, the surface of the guide rod 14 is slidably connected to the movable plate 12, and the surface of the mounting sleeve 15 is slidably connected to the mounting plate 10. By setting the guide rod 14, the movable plate 12 can be guided and stably moved.

[0024] See also Figure 1 and Figure 4 The silencer mechanism 23 includes a heat conducting plate 4, the surface of the shell 1 is welded to the heat conducting plate 4, an isolation plate 19 is welded to the inner wall of the shell 1, and a ventilation pipe 20 is connected to the opposite side of the isolation plate 19. By arranging the isolation plate 19 and the ventilation pipe 20, the flow direction of the gas can be easily controlled and noise reduction can be facilitated. The rear side of the connecting pipe 2 is connected to the air guide pipe 18, and the rear side of the isolation plate 19 is connected to the shell 1 through a pipeline.

[0025] See also Figure 4 A groove is provided on the surface of the heat conducting plate 4. By providing the groove, the contact area between the surface of the heat conducting plate 4 and the air can be increased, and the heat dissipation of the heat conducting plate 4 can be facilitated. A baffle is welded on the inner wall of the shell 1, and the front side of the air guide pipe 18 passes through the front side of the baffle. By providing the baffle, the exhaust gas can be guided and the exhaust gas can enter the air guide pipe 18.

[0026] When in use, the threaded rod 17 is driven to move up and down by rotating the threaded sleeve 16, and the extended length of the threaded rod 17 is adjusted. After adjusting to a suitable position, the threaded rod 17 is installed in the car through a preset bolt. When vibration occurs again, the fixing plate 3 is driven to move up and down through the shell 1, and the mounting plate 10 is driven to move up and down through the fixing plate 3. The spring 13 is driven to move in an extension and contraction manner through the mounting plate 10 for buffering, and the damper 11 is used to perform a damping movement for shock resistance, and the heat on the surface of the shell 1 is exported through the heat conducting sheet 4, and the shell 1 is cooled through the heat conducting sheet 4. The controller starts the cooling fan 9, which blows air to the heat conductive sheet 4 through the cooling fan 9, and dissipates the heat on the surface of the heat conductive sheet 4 through high-speed gas to prevent the shell 1 from being overheated. The automobile exhaust enters the air duct 18 through the connecting pipe 2, and the exhaust gas and noise are dissipated through the holes on the surface of the air duct 18. Then the noise and exhaust gas form a cycle in the shell 1 through the ventilation pipe 20, and the noise is reduced by the mutual interference between the noises. Then the exhaust gas is discharged through the pipeline, and the noise is absorbed by the sound-absorbing cotton 6, and the noise is isolated by the noise reduction shell 5, thereby enhancing the anti-noise effect.

[0027] In summary: the exhaust silencer structure of the passenger car, through the air guide pipe 18, the isolation plate 19, the ventilation pipe 20, the heat dissipation mechanism 21, the anti-vibration mechanism 22 and the silencer mechanism 23, solves the problems that the device is not convenient to cool the surface during use, the surface temperature of the muffler is too high, which easily causes damage to the device and reduces the service life of the device, is not convenient for shock resistance, and a large amount of vibration will be generated during the driving of the car after installation, and the vibration will cause damage to the muffler, making it inconvenient for normal use of the device.

Claims

1. A passenger car exhaust silencer structure, comprising a housing (1), characterized in that: The front side of the shell (1) is connected to a connecting pipe (2), a fixing plate (3) is fixedly sleeved on the surface of the shell (1), a heat dissipation mechanism (21) is provided on the surface of the fixing plate (3), an anti-vibration mechanism (22) is provided on the surface of the fixing plate (3), and a silencer mechanism (23) is provided in the inner cavity of the shell (1).

2. The exhaust muffler structure for a passenger vehicle according to claim 1, characterized in that: The heat dissipation mechanism (21) comprises a noise reduction shell (5), the opposite side of the fixing plate (3) is connected to the noise reduction shell (5) by bolts, the surface of the shell (1) is sleeved with sound-absorbing cotton (6), the surface of the noise reduction shell (5) is welded with an L-shaped plate (7), the opposite side of the L-shaped plate (7) is connected to a mounting frame (8) by bolts, and the inner wall of the mounting frame (8) is connected to a heat dissipation fan (9) by bolts.

3. The exhaust muffler structure for a passenger vehicle according to claim 1, characterized in that: The anti-seismic mechanism (22) comprises a mounting plate (10), the surface of the fixed plate (3) is welded to the mounting plate (10), a damper (11) is connected to the opposite side of the mounting plate (10) by bolts, the bottom of the damper (11) is connected to the movable plate (12) by bolts, the top of the movable plate (12) is connected to the mounting sleeve (15) by bolts, the top of the mounting sleeve (15) is rotatably connected to the threaded sleeve (16), a threaded rod (17) is provided through the top of the threaded sleeve (16), the surface of the threaded rod (17) is threadedly connected to the threaded sleeve (16), the top of the movable plate (12) is connected to the spring (13) by bolts, and the top of the spring (13) is connected to the mounting plate (10) by bolts.

4. The exhaust muffler structure for a passenger vehicle according to claim 3, characterized in that: A guide rod (14) is connected to the opposite side of the mounting plate (10) via bolts, a surface of the guide rod (14) is slidably connected to the movable plate (12), and a surface of the mounting sleeve (15) is slidably connected to the mounting plate (10).

5. The exhaust muffler structure for a passenger vehicle according to claim 1, characterized in that: The silencer mechanism (23) comprises a heat conducting plate (4), the surface of the shell (1) is welded to the heat conducting plate (4), an isolation plate (19) is welded to the inner wall of the shell (1), a side opposite to the isolation plate (19) is connected to a vent pipe (20), the rear side of the connecting pipe (2) is connected to an air guide pipe (18), and the rear side of the isolation plate (19) is connected to the shell (1) via a pipeline.

6. The exhaust muffler structure for a passenger vehicle according to claim 5, characterized in that: A groove is provided on the surface of the heat conducting plate (4), a baffle is welded to the inner wall of the shell (1), and the front side of the air guide pipe (18) passes through the front side of the baffle.

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