Exhaust silencer mechanism for all-terrain vehicle

Abstract

The present invention provides an exhaust silencer mechanism for an all-terrain vehicle, which belongs to the field of automobile manufacturing technology. It solves the technical problems that the airflow flow path of the existing exhaust silencer is a simple straight line, resulting in a single airflow movement route during the exhaust process and poor noise reduction effect. The exhaust silencer mechanism of the all-terrain vehicle includes an exhaust manifold body, and the bottom of the exhaust manifold body is sequentially provided with a corrugated short pipe, a three-way catalytic converter body, and a diverter pipe. Two corrugated long pipes are fixed at the bottom of the diverter pipe, and the bottoms of the two corrugated long pipes are respectively provided with silencers. The silencers include exhaust pipes that are respectively fixedly connected to the bottom ends of the two corrugated long pipes, and the inner wall of the exhaust pipe is fixed with a reflection wall, and the reflection wall is made of HT500C acoustic material. Three partitions are sequentially fixed on the upper and lower inner walls of the exhaust pipe. The present invention has the advantages of realizing diversion and reflection to weaken noise and improve silencer efficiency, and the installation position of the exhaust pipe is suitable for more models of all-terrain vehicles.

Description

Technical Field

[0001] The invention belongs to the technical field of automobile manufacturing and relates to an exhaust muffler mechanism, in particular to an exhaust muffler mechanism for an all-terrain vehicle. Background Art

[0002] When a car is running, it will generate a lot of exhaust noise, which not only affects the driving and riding comfort, but also may cause noise pollution to the environment. The exhaust muffler effectively reduces these noises by absorption, reflection and other means, making the vehicle run more quietly. ATVs are often used for non-highway driving, such as off-road, mountainous, muddy and other complex terrains. These environments place higher demands on the durability and reliability of the vehicle, including its exhaust system. In order to cope with the harsh use environment, the exhaust muffler of the ATV may need to adopt a special structural design, such as a three-tube maze exhaust muffler structure, and the connection method of the baffle and the inner pipe to enhance its noise reduction effect and durability, so as to ensure that it can maintain efficient and stable operation under various complex conditions.

[0003] After searching, it is found that a Chinese patent document discloses an automobile exhaust muffler [Application No.: 201910676531.5; Publication No.: CN110454263B]. This automobile exhaust muffler is provided with a reinforced pipe part that divides the muffler pipe part into two sections through the muffler inner insert pipe, and the reinforced pipe part is provided with reinforcing ribs; the overall strength of the muffler inner insert pipe is improved, and the coupling of the muffler inner insert pipe with the common speed frequency of the whole vehicle is avoided, and the fatigue fracture failure of the muffler inner insert pipe caused by long-term vibration transmission is avoided, thereby eliminating the generation of abnormal noise.

[0004] Although the automobile exhaust muffler disclosed in the patent eliminates the problem of abnormal noise caused by the breakage of the insert pipe in the muffler due to vibration, the airflow flow path of the exhaust muffler is a simple straight line, resulting in a single movement route of the airflow during the exhaust process and poor noise reduction effect. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose an exhaust silencer mechanism for an all-terrain vehicle. The technical problem to be solved by the invention is: how to achieve diversion and reflection to weaken noise and improve silencer efficiency, and the exhaust pipe installation position can adapt to the functions of more models of all-terrain vehicles.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An exhaust silencer mechanism for an all-terrain vehicle comprises an exhaust manifold body, wherein a corrugated short pipe, a three-way catalytic converter body and a shunt pipe are sequentially arranged at the bottom of the exhaust manifold body, two corrugated long pipes are fixed at the bottom of the shunt pipe, and silencers are respectively arranged at the bottom of the two corrugated long pipes, and the silencers comprise exhaust pipes respectively fixedly connected to the bottom ends of the two corrugated long pipes, a reflection wall is fixed on the inner wall of the exhaust pipe, and the reflection wall is made of HT500C acoustic material, and three partitions are sequentially fixed on the inner wall of the exhaust pipe from top to bottom, a first exhaust pipe is penetrated on the uppermost partition, and two second exhaust pipes are penetrated on the lower two partitions, and a plurality of vents are evenly opened on the two second exhaust pipes, and the vents are all located between the lower two partitions, and a third exhaust pipe is penetrated on the lowermost partition;

[0008] A disassembly mechanism is provided between the exhaust manifold body and the corrugated short pipe, between the corrugated short pipe and the three-way catalytic converter body, between the three-way catalytic converter body and the bypass pipe, and between the corrugated long pipe and the exhaust pipe. Flanges are provided at both upper and lower ends of the disassembly mechanism, and the number of flanges is five pairs. Installation mechanisms are provided between the three pairs of flanges on the top, and a connecting mechanism is provided on the muffler.

[0009] The working principle of the present invention is as follows: the corrugated short pipe and the corrugated long pipe cushion vibrations through their own deformation during the operation of the all-terrain vehicle, thereby improving the stability of other structures; the engine exhaust is collected through the exhaust manifold body, enters the corrugated short pipe, and is purified by the three-way catalytic converter body for harmful gas; the purified gas is divided into two streams through the diverter pipe and enters the corrugated long pipe and the exhaust pipe; the diversion process achieves gas noise weakening; the exhaust pipe is divided into four gas spaces by three partitions; the purified gas entering the exhaust pipe enters the uppermost gas space; the air inlet of the first exhaust pipe is located on the uppermost partition Before the gas enters the first exhaust pipe, the gas contacts the reflective wall over a large area in the uppermost gas space. After multiple repeated reflections by the reflective wall to achieve noise reduction, the gas enters the second gas space through the first exhaust pipe. The gas outlet of the first exhaust pipe is located at a lower position in the second gas space, and the gas inlet of the second exhaust pipe is located at an upper position in the second gas space. The gas discharged from the gas outlet of the first exhaust pipe needs to flow from bottom to top in the second gas space, and then enter the gas inlet of the second exhaust pipe. In this process, the gas fully contacts the reflective wall in the second gas space, and the gas and the reflective wall During the contact process, the noise is weakened again after multiple reflections, and then the gas enters the third gas space through the vent hole on the second exhaust pipe, and the gas is diverted again. The noise is weakened during the diversion process, and the gas continues to contact its reflection wall in the third gas space, and the noise is further weakened during the reflection process. Finally, the gas enters the fourth gas space through the third exhaust pipe outlet (the third exhaust pipe inlet is located on the lowest partition), and the fourth gas space is connected with the external ambient air to achieve discharge. At the same time, the purified gas passes through the reflection wall for multiple times during the movement in the four gas spaces to weaken the noise, complicate the gas route, and improve the noise reduction and silencing efficiency through multiple diversions and reflections. By disassembling the disassembly mechanism, the exhaust manifold body, the corrugated short pipe, the three-way catalytic converter body, the diverter pipe, the fixed flange and the exhaust pipe can be flange-connected by bolts and flanges, so that the disassembly mechanism can be installed on different exhaust silencing parts through flanges, and when individual parts are disassembled and repaired, it is only necessary to separate the disassembly mechanism. In the smaller space at the bottom of the all-terrain vehicle, there is no need to perform time-consuming operations of repeatedly unscrewing the bolts to separate the flange connection, thereby improving the efficiency of repairing and replacing the structure.

[0010] The disassembly mechanism includes a vent cylinder fixedly connected to the opposite ends of each pair of flanges, the two vent cylinders are covered with rubber sleeves, the rubber sleeves are covered with sleeves, ropes are passed through the left and right ends of the top of the sleeves, magnetic sheets are fixed at both ends of the ropes, and the magnetic sheets are magnetically connected to the magnetic absorption layers pasted on the opposite ends of the two flanges.

[0011] With the above structure, when installing the splitting mechanism, put the sleeve into the lower ventilator, align the ventilators at both ends, put in the rubber sleeve (the rubber sleeve has a break that can be pulled open for installation), put the rubber sleeve into the joint of the two ventilators, hold the upper magnetic sheet and pull it upward, the rope moves in the sleeve with the upper magnetic sheet until the lower magnetic sheet is limited under the sleeve, and the sleeve is covered with the rubber sleeve (the material of the rubber sleeve is perfluoroether rubber, which has high temperature resistance, and the outer edge of the rubber sleeve is chamfered to facilitate the sleeve to be inserted) , the sleeve moves to the place where the two breathers merge. At this time, the sleeve squeezes the rubber sleeve to make the sleeve and the rubber sleeve interference fit at the connection between the two breathers. The sleeve is fixed between the two breathers to achieve fixation. After fixation, the four magnetic pieces can be magnetically attracted to the magnetic layer of the flange for storage. When disassembling, also hold the magnetic piece and pull it hard, remove the sleeve to cancel the connection between the two breathers, and then you can remove the exhaust manifold body, corrugated short pipe, three-way catalytic converter body, diverter pipe and corrugated long pipe, and exhaust pipe separately.

[0012] A clamping ring is fixed on the two ventilators, and two opening sliding grooves for passing ropes are respectively arranged on the two clamping rings.

[0013] With the above structure, when pulling the rope, the rope is passed through the open slide groove, and the rope passes through the clamp ring. The contact end of the clamp ring and the rope serves as a turning point, which can convert the force of pulling the rope to the surroundings into an upward or downward force, making the sleeve easier to pull.

[0014] The mounting mechanism comprises a groove slide rail, a fixed protrusion is integrally formed in the middle of the inner wall of the groove slide rail, two sliding protrusions are slidably connected to the inner wall of the groove slide rail, a paddle is integrally formed at the front end of the sliding protrusions, springs are fixed between the two sliding protrusions and the fixed protrusions, a first shock absorber is rotatably connected to the front end of the fixed protrusion, the groove slide rail is vertically clamped at a front position between each pair of flanges, and a notch with the same outer diameter as the sliding protrusion is opened at the front end of each pair of flanges.

[0015] By adopting the above structure, the two paddles are held respectively and force is applied in the direction of the fixed protrusion to make the paddles move toward each other, and the sliding protrusion slides into the groove slide rail with the paddle plates, and the groove slide rail is moved between each pair of flanges. At this time, the sliding protrusion is aligned with the notch on the flange, and the paddle is released. The restoring force of the spring drives the sliding protrusion to fall into the notch to realize the installation of the first shock absorber, and the first shock absorber is adjusted by rotating the first shock absorber and the fixed protrusion so that the end of the first shock absorber away from the fixed protrusion is installed at the bottom installation of the all-terrain vehicle, the position of the disassembly mechanism at the bottom of the all-terrain vehicle is positioned, and it plays a shock-absorbing role during the movement of the all-terrain vehicle. By holding the two paddles and applying force in the direction of the fixed protrusion, the sliding protrusion can be indirectly disengaged from the notch to realize the disengagement of the installation mechanism from the flange.

[0016] A round hole is formed at the front end of the fixed protrusion, a bearing is interference fit in the round hole, a shaft neck is key-connected to the inner wall of the bearing, a first rotating pair is fixed to the end of the shaft neck away from the bearing, and the first shock absorber is fixed to the movable end of the first rotating pair.

[0017] With the above structure, the bearing realizes the circular rotation of the first shock absorber, and the rotation trajectory of the first rotating pair changes with the rotation of the movable end of the bearing, making the connection position of the first shock absorber more flexible, avoiding motion interference that causes the separation mechanism between the flanges to be subjected to excess force, and improving stability.

[0018] A fixed bracket mechanism is provided on the two corrugated long tubes, and the fixed bracket mechanism includes a fixed plate fixed on the shunt pipe, four long grooves are evenly opened on the fixed plate, and a limiting slider is slidably connected to the long grooves. A first single-hole plate is fixed to the bottom of the limiting slider, and a fixed flange is fixed to the bottom of the corrugated long tube, and a second iron ring is fixed to the top of the fixed flange. The first iron ring is sleeved on the second iron ring, and a second single-hole plate is integrally formed on the top of the first iron ring. A plurality of vertical double-hole plates are fixed between the first single-hole plate and the second single-hole plate by bolts, and the plurality of vertical double-hole plates are fixed by bolts, and the two corrugated long tubes are arranged between the front and rear two groups of vertical double-hole plates.

[0019] With the above structure, the two exhaust pipes are respectively installed at the installation positions at the bottom of the corresponding all-terrain vehicle through the connecting mechanism. At this time, the corrugated long tube is deformed along with the position where the exhaust pipe is connected. According to the deformed shape of the corrugated long tube, the vertical double-hole plate, the first single-hole plate and the second single-hole plate are spliced, and the bolts therebetween are tightened to fix the angle and the length of the composition between the vertical double-hole plate, the first single-hole plate and the second single-hole plate, so that the distance between the fixing plate and the fixing flange is fixed, so as to avoid excessive deformation of the corrugated long tube during the movement of the all-terrain vehicle, and the first iron ring is sleeved in the second iron ring. It can move slightly, so that the second single-hole plate and the vertical double-hole plate fixed to it can both move slightly. During the movement, the upper end of the first single-hole plate moves in the long groove on the fixed plate, so that the corrugated long tube is also deformed slightly to buffer the vibration during the movement of the all-terrain vehicle. The vertical double-hole plate and the horizontal double-hole plate can be flexibly increased or decreased by disassembling and assembling bolts, and the deformation angle of the corrugated long tube is fixed to avoid sudden changes in the angle of the corrugated long tube during the exhaust process, resulting in poor exhaust. The corrugated long tube can be twisted into a multi-angle shape and then fixed to complicate the airflow route and improve the sound insulation effect.

[0020] Two horizontal double-hole plates are fixed between the two vertical double-hole plates corresponding to the left and right sides by bolts, and the two horizontal double-hole plates are fixed by bolts.

[0021] With the above structure, the horizontal double-hole plate is fixed between the vertical double-hole plates through the distance between the two corrugated long tubes and the bolts are tightened to fix the distance between the vertical double-hole plates on the left and right sides, thereby forming a bracket between the first single-hole plate, the second single-hole plate, the vertical double-hole plate and the horizontal double-hole plate, which can adapt to the small range adjustment of the distance between the fixed plate and the two fixed flanges, thereby improving the applicability and stability.

[0022] The connecting mechanism includes a ring buckle mounted on the exhaust pipe, a damping shaft is passed through the front end of the ring buckle, angle pieces are clamped between the nut on the damping shaft and the front end of the ring buckle, the front ends of the two angle pieces are fixed with a second rotating pair by bolts, and the second shock absorber is fixed to the movable end of the second rotating pair.

[0023] With the above structure, when installing the exhaust pipe, the buckle is clamped on the exhaust pipe, the damping shaft is inserted into the fixed plate at the front end of the buckle, the two angle pieces are respectively inserted into the two ends of the damping shaft, the angle of the angle piece is adjusted according to the installation position of the exhaust pipe, and then the nut on the damping shaft is tightened, and then the second rotating pair is installed, and the movable end of the second rotating pair is adjusted to align with the bottom of the mounting cover at the rear end of the all-terrain vehicle, and then the nut on the second rotating pair is tightened to fix the rotation angle of the second rotating pair, and the second shock absorber is aligned with the angle of the second rotating pair to the bottom installation of the decorative cover at the rear end of the all-terrain vehicle, and then the second shock absorber is fixed to the bottom of the decorative cover with bolts.

[0024] Compared with the prior art, the exhaust muffler mechanism of the all-terrain vehicle has the following advantages:

[0025] 1. The initial gas diversion of the exhaust is achieved through the diversion pipe, the secondary gas diversion is achieved through the two first exhaust pipes and the second exhaust pipe, and the tertiary gas diversion is achieved through the multiple vents on the second exhaust pipe. At the same time, the gas is repeatedly reflected by the reflection wall in the exhaust pipe, so that the diversion and reflection can weaken the noise and improve the silencing efficiency.

[0026] 2. By setting a flexibly deformable corrugated long tube, the installation spacing and position of the two exhaust pipes are flexible to adapt to all-terrain vehicles of various specifications. At the same time, after the position adjustment is completed, the fixed bracket mechanism is assembled to limit the deformation range of the corrugated long tube so that the corrugated long tube can be slightly expanded and deformed. The vibration during the operation of the all-terrain vehicle is buffered by the slight expansion and contraction deformation, which improves the stability of the shunt pipe, three-way catalytic converter and exhaust pipe at both ends of the corrugated long tube, reduces the damage to the overall structure caused by vibration, and extends the service life of the exhaust muffler mechanism.

[0027] 3. By setting the flange and the disassembly mechanism, the flange can be connected to the initial parts, such as the exhaust manifold body, the three-way catalytic converter, the corrugated short pipe, the exhaust pipe and other structures that have an integrally formed flange, and there is no need to produce them separately, so that the flange and the disassembly mechanism can be added to the original structure, saving production costs, and when repairing and disassembling a separate structure, the separate parts can be disassembled by separating the disassembly mechanism, and compared with unscrewing the threads on the flange, the separation method of the disassembly mechanism is simple, thereby improving the efficiency of repair and replacement.

[0028] 4. By setting up the installation mechanism, the restoring force of the spring is used to install the installation mechanism between each pair of flanges, which is convenient for disassembly. At the same time, the other end of the first shock absorber is installed on the bottom of the all-terrain vehicle. The disassembly mechanism forms a connecting end between the structures. The installation mechanism connects the connecting end to the all-terrain vehicle to improve the stability of the exhaust silencer mechanism. The first shock absorber buffers the vibration generated by the operation of the all-terrain vehicle, which not only connects the disassembly mechanism but also has a shock-absorbing effect, thereby improving the stability of the installation connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention.

[0030] Figure 2 It is a schematic structural diagram of the muffler portion of the present invention.

[0031] Figure 3 It is a structural schematic diagram of the splitting mechanism part in the present invention.

[0032] Figure 4 It is a structural schematic diagram of the ventilator part in the present invention.

[0033] Figure 5 It is a schematic structural diagram of the clamping ring part in the present invention.

[0034] Figure 6 It is a structural schematic diagram of the sliding protrusion part in the present invention.

[0035] Figure 7 It is a structural schematic diagram of the installation mechanism part in the present invention.

[0036] Figure 8 It is a schematic structural diagram of the corrugated long tube part of the present invention.

[0037] Fig. 9 It is a structural schematic diagram of the fixed support mechanism part in the present invention.

[0038] Fig.10 It is a structural schematic diagram of the connecting mechanism part in the present invention.

[0039] In the figure, 1, exhaust manifold body; 2, corrugated short pipe; 3, three-way catalytic converter body; 4, shunt pipe; 5, corrugated long pipe; 501, fixed flange; 6, silencer; 601, exhaust pipe; 602, partition; 603, reflection wall; 604, first exhaust pipe; 605, second exhaust pipe; 606, vent hole; 607, third exhaust pipe; 7, flange; 8, disassembly mechanism; 801, vent pipe; 802, rubber sleeve; 803, sleeve; 804, magnetic sheet; 805, rope; 806, clamp ring; 807, open slide groove; 9, installation mechanism; 901, groove slide rail; 902, fixed convex Block; 903, spring; 904, sliding protrusion; 905, dial plate; 906, bearing; 907, journal; 908, first rotation pair; 909, first shock absorber; 10, fixed bracket mechanism; 1001, fixed plate; 1002, limit slider; 1003, first single-hole plate; 1004, vertical double-hole plate; 1005, second single-hole plate; 1006, first iron ring; 1007, second iron ring; 1008, horizontal double-hole plate; 11, connecting mechanism; 1101, buckle; 1102, damping shaft; 1103, angle piece; 1104, second rotation pair; 1105, second shock absorber. DETAILED DESCRIPTION

[0040] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0041] like Figure 1-Figure 10As shown, the exhaust silencer mechanism of the all-terrain vehicle includes an exhaust manifold body 1, a corrugated short pipe 2, a three-way catalytic converter body 3, and a shunt pipe 4 are sequentially arranged at the bottom of the exhaust manifold body 1, two corrugated long pipes 5 are fixed at the bottom of the shunt pipe 4, and silencers 6 are respectively arranged at the bottom of the two corrugated long pipes 5. The silencers 6 include exhaust pipes 601 fixedly connected to the bottom ends of the two corrugated long pipes 5, and a reflective wall 603 is fixed to the inner wall of the exhaust pipe 601. The reflective wall 603 is made of HT500C acoustic material. Three partitions 602 are sequentially fixed to the inner wall of the exhaust pipe 601, and a first exhaust pipe 604 is penetrated on the uppermost partition 602, and two second exhaust pipes 605 are penetrated on the lower two partitions 602. The two second exhaust pipes 605 are evenly opened. A plurality of vent holes 606 are provided, and the vent holes 606 are all located between the two lower partitions (602). A third exhaust pipe (607) is provided on the lowermost partition (602). In the present embodiment, the exhaust manifold body 1 and the three-way catalytic converter body 3 are both prior art. The corrugated short pipe 2 and the corrugated long pipe 5 cushion vibrations through their own deformation during the operation of the all-terrain vehicle, thereby improving the stability of other structures. The engine exhaust gas is collected through the exhaust manifold body 1, enters the corrugated short pipe 2, and is purified by the three-way catalytic converter body 3 for harmful gas. The purified gas is divided into two streams through the diversion pipe 4 and enters the corrugated long pipe 5 and the exhaust pipe 601. The diversion process realizes the weakening of gas noise. The exhaust pipe 601 is divided into four gas spaces by the three partitions 602. , the purified gas entering the exhaust pipe 601 enters the uppermost gas space, the air inlet of the first exhaust pipe 604 is located on the uppermost partition 602, and before the gas enters the first exhaust pipe 604, the gas contacts the reflection wall 603 with a large area in the uppermost gas space, and after the noise is weakened by repeated reflections of the reflection wall 603, the gas enters the second gas space through the first exhaust pipe 604, the air outlet of the first exhaust pipe 604 is located at the lower part of the second gas space, and the air inlet of the second exhaust pipe 605 is located at the upper part of the second gas space, and the gas discharged from the air outlet of the first exhaust pipe 604 needs to flow from bottom to top in the second gas space, and then enter the air inlet of the second exhaust pipe 605, and in this process, it contacts the second gas space. The gas fully contacts the reflective wall 603 in the air space, and the noise is weakened again after multiple reflections during the contact between the gas and the reflective wall 603. Then, the gas enters the third gas space through the vent hole 606 on the second exhaust pipe 605, and the gas is diverted again. The noise is weakened during the diversion process, and the gas continues to contact the reflective wall 603 in the third gas space, and the noise is further weakened during the reflection process. Finally, the gas enters the fourth gas space through the air outlet of the third exhaust pipe 607 (the air inlet of the third exhaust pipe 607 is located on the lowest partition 602). The fourth gas space is connected to the external ambient air to achieve discharge. At the same time, the purified gas passes through the reflective wall 603 for multiple repeated reflections during the movement of the four gas spaces to weaken the noise, which complicates the gas route.And through multiple diversions and reflections, the noise reduction efficiency is improved.

[0042] A disassembly mechanism 8 is provided between the exhaust manifold body 1 and the corrugated short pipe 2, between the corrugated short pipe 2 and the three-way catalytic converter body 3, between the three-way catalytic converter body 3 and the bypass pipe 4, and between the corrugated long pipe 5 and the exhaust pipe 601. Flanges 7 are provided at both upper and lower ends of the disassembly mechanism 8, and the number of flanges 7 is five. Mounting mechanisms 9 are provided between the three pairs of flanges 7 on the top, and a connecting mechanism 11 is provided on the muffler 6. In this embodiment, by disassembling the disassembly mechanism 8, the exhaust manifold body 1, the corrugated short pipe 2, the three-way catalytic converter body 3, the bypass pipe 4, the fixed flange 501 and the exhaust pipe 601 can be flange-connected with the flange 7 by bolts, so that the disassembly mechanism 8 can be installed on different exhaust muffler parts through the flange 7, and when individual parts are disassembled and repaired, it is only necessary to separate the disassembly mechanism 8. In the smaller space at the bottom of the all-terrain vehicle, there is no need to perform the time-consuming operation of unscrewing the bolts multiple times to separate the flange connection, thereby improving the efficiency of repairing and replacing the structure.

[0043] The disassembling mechanism 8 includes a ventilator 801 fixedly connected to the opposite ends of each pair of flanges 7, a rubber sleeve 802 is sleeved on the two ventilators 801, a sleeve 803 is sleeved on the rubber sleeve 802, ropes 805 are passed through the left and right ends of the top of the sleeve 803, and magnetic sheets 804 are fixed on both ends of the rope 805. The magnetic sheets 804 are magnetically connected to the magnetic absorption layers pasted on the opposite ends of the two flanges 7. In this embodiment, when installing the disassembling mechanism 8, the sleeve 803 is inserted into the ventilator 801 below, and the ventilators 801 at both ends are aligned (at this time, the flanges 7 have been aligned with the flanges 7). The exhaust manifold body 1, the corrugated short pipe 2, the three-way catalytic converter body 3, the shunt pipe 4, the exhaust pipe 601 and the fixed flange 501 are flange-connected, and the exhaust manifold body 1, the corrugated short pipe 2, the three-way catalytic converter body 3, the shunt pipe 4 and the corrugated long pipe 5, and the exhaust pipe 601 are fixed to the bottom of the external all-terrain vehicle through an external structure through existing shock-absorbing means), and the rubber sleeve 802 is inserted (the rubber sleeve 802 has a fracture that can be pulled open for sleeve installation), so that the rubber sleeve 802 is inserted into the joint of the two ventilators 801, and the upper magnetic sheet 804 is held Pulling upward, the rope 805 moves with the upper magnetic sheet 804 in the sleeve 803 (the rope 805 is made of aramid fiber and has high temperature resistance), until the lower magnetic sheet 804 is limited below the sleeve 803, until the sleeve 803 is covered with the rubber sleeve 802 (the rubber sleeve 802 is made of perfluoroether rubber and has high temperature resistance, and the outer edge of the rubber sleeve 802 is chamfered to facilitate the sleeve 803 to be inserted), and the sleeve 803 moves to the junction of the two ventilators 801. At this time, the sleeve 803 squeezes the rubber sleeve 802, so that the sleeve 803 and The rubber sleeve 802 is interference fit at the connection between the two breather cylinders 801, and the sleeve 803 is fixed between the two breather cylinders 801 to achieve fixation. After fixation, the four magnetic pieces 804 can be magnetically attracted to the magnetic layer of the flange 7 for storage (the magnetic layer is pasted on the surface of the flange 7 using high-temperature resistant glue). When disassembling, also hold the magnetic piece 804 and pull it hard, remove the sleeve 803 to cancel the connection between the two breather cylinders 801, and then you can remove the exhaust manifold body 1, the corrugated short pipe 2, the three-way catalytic converter body 3, the diverter pipe 4 and the corrugated long pipe 5, and the exhaust cylinder 601 separately.

[0044] A snap ring 806 is fixed on each of the two vents 801, and two open grooves 807 for the rope 805 to pass through are respectively provided on the two snap rings 806. In the present embodiment, when the rope 805 is pulled, the rope 805 is passed through the open groove 807, so that the rope 805 passes through the snap ring 806. The contact end of the snap ring 806 and the rope 805 serves as a turning point, which can convert the force of pulling the rope 805 to the surroundings into an upward or downward force, making it easier to pull the sleeve 803.

[0045] The mounting mechanism 9 comprises a groove slide rail 901, a fixed protrusion 902 is integrally formed in the middle of the inner wall of the groove slide rail 901, two sliding protrusions 904 are slidably connected to the inner wall of the groove slide rail 901, a dial plate 905 is integrally formed at the front end of the sliding protrusion 904, a spring 903 is fixed between the two sliding protrusions 904 and the fixed protrusion 902, a first shock absorber 909 is rotatably connected to the front end of the fixed protrusion 902, the groove slide rail 901 is vertically clamped at a front position between each pair of flanges 7, and a notch with the same outer diameter as the sliding protrusion 904 is provided at the front end of each pair of flanges 7. In this embodiment, two dial plates 905 are held respectively and force is applied in the direction of the fixed protrusion 902 to make the dial plates 905 move toward each other, and the sliding protrusion 904 slides with the dial plates 905 to the groove slide The grooved slide rail 901 is moved between each pair of flanges 7. At this time, the sliding protrusion 904 is aligned with the notch on the flange 7, and the paddle 905 is released. The restoring force of the spring 903 drives the sliding protrusion 904 to fall into the notch, thereby realizing the installation of the first shock absorber 909. The first shock absorber 909 is adjusted by rotating the first shock absorber 909 and the fixed protrusion 902, so that the end of the first shock absorber 909 away from the fixed protrusion 902 is installed at the bottom installation position of the all-terrain vehicle, the position of the disassembly mechanism 8 at the bottom of the all-terrain vehicle is positioned, and it plays a shock-absorbing role during the movement of the all-terrain vehicle. By holding the two paddles 905 and applying force in the direction of the fixed protrusion 902, the sliding protrusion 904 can be indirectly disengaged from the notch to realize the disengagement of the installation mechanism 9 from the flange 7.

[0046] A circular hole is provided at the front end of the fixed protrusion 902, and a bearing 906 is interference fit in the circular hole. A shaft neck 907 is connected to the inner wall key of the bearing 906. A first rotating pair 908 is fixed to the end of the shaft neck 907 away from the bearing 906. The first shock absorber 909 is fixed to the movable end of the first rotating pair 908. In the present embodiment, the bearing 906 realizes the circular rotation of the first shock absorber 909, and the rotation trajectory of the first rotating pair 908 changes with the rotation of the movable end of the bearing 906, so that the connection position of the first shock absorber 909 is more flexible, avoiding motion interference that causes the disassembly mechanism 8 between the flanges 7 to be subjected to excess force, thereby improving stability.

[0047] A fixed support mechanism 10 is provided on the two corrugated long tubes 5, and the fixed support mechanism 10 includes a fixed plate 1001 fixed on the shunt pipe 4, four long grooves are evenly opened on the fixed plate 1001, and a limit slider 1002 is slidably connected to the long groove, and a first single-hole plate 1003 is fixed to the bottom of the limit slider 1002, and a fixed flange 501 is fixed to the bottom of the corrugated long tube 5, and a second iron ring 1007 is fixed to the top of the fixed flange 501, and a first iron ring 1006 is sleeved on the second iron ring 1007, and a second single-hole plate 1005 is integrally formed on the top of the first iron ring 1006. A plurality of vertical double-hole plates 1004 are fixed between the first single-hole plate 1003 and the second single-hole plate 1005 by bolts, and the plurality of vertical double-hole plates 1004 are fixed by bolts. The two corrugated long tubes 5 are arranged between the front and rear two groups of vertical double-hole plates 1004. In this embodiment, the two exhaust pipes 601 are respectively installed through the connecting mechanism 11 It is installed at the installation position corresponding to the bottom of the all-terrain vehicle. At this time, the corrugated long tube 5 is deformed along with the position where the exhaust pipe 601 is connected. According to the deformed shape of the corrugated long tube 5, the vertical double-hole plate 1004, the first single-hole plate 1003 and the second single-hole plate 1005 are spliced, and the bolts therebetween are tightened to fix the angles and the lengths of the components among the vertical double-hole plate 1004, the first single-hole plate 1003 and the second single-hole plate 1005, so that the distance between the fixed plate 1001 and the fixed flange 501 is fixed to avoid excessive deformation of the corrugated long tube 5 during the movement of the all-terrain vehicle. The first iron ring 1006 is sleeved in the second iron ring 1007 and can move slightly, so that the second single-hole plate 1005 and the vertical double-hole plate 1004 fixed thereto can both move slightly. During the movement, the upper end of the first single-hole plate 1003 moves in the long groove on the fixed plate 1001, so that the corrugated long tube 5 is also slightly deformed to buffer the vibration during the movement of the all-terrain vehicle.

[0048] Two horizontal double-hole plates 1008 are fixed between the two corresponding vertical double-hole plates 1004 on the left and right by bolts, and the two horizontal double-hole plates 1008 are fixed by bolts. In this embodiment, the horizontal double-hole plates 1008 are fixed between the vertical double-hole plates 1004 through the distance between the two corrugated long tubes 5 and the bolts are tightened to fix the distance between the vertical double-hole plates 1004 on the left and right sides, so that a bracket is formed between the first single-hole plate 1003, the second single-hole plate 1005, the vertical double-hole plate 1004 and the horizontal double-hole plate 1008, which can adapt to the small range adjustment of the distance between the fixed plate 1001 and the two fixed flanges 501, thereby improving applicability and stability.

[0049] The connecting mechanism 11 includes a ring buckle 1101 sleeved on the exhaust pipe 601, a damping shaft 1102 is passed through the front end of the ring buckle 1101, and an angle piece 1103 is clamped between the nut on the damping shaft 1102 and the front end of the ring buckle 1101. The front ends of the two angle pieces 1103 are fixed with a second rotating pair 1104 by bolts, and the second shock absorber 1105 is fixed to the movable end of the second rotating pair 1104. In this embodiment, the ring buckle 1101 is composed of two hinged semicircles, and a fixing plate is integrally formed at one end of the semicircle away from the hinge. When the exhaust pipe 601 is installed, the ring buckle 1101 is stuck on the exhaust pipe 601, and the damping shaft 1102 is inserted into the ring buckle 1101. The fixing plate at the front end is used to respectively insert the two angle pieces 1103 into the two ends of the damping shaft 1102, adjust the angle of the angle piece 1103 according to the installation position of the exhaust pipe 601, and then tighten the nut on the damping shaft 1102, and then install the second rotating pair 1104, adjust the movable end of the second rotating pair 1104 to align it with the bottom of the mounting cover at the rear end of the all-terrain vehicle, and then tighten the nut on the second rotating pair 1104 to fix the rotation angle of the second rotating pair 1104, and align the second shock absorber 1105 with the angle of the second rotating pair 1104 to the bottom installation position of the decorative cover at the rear end of the all-terrain vehicle, and then fix the second shock absorber 1105 to the bottom of the decorative cover with bolts.

[0050] Working principle of the present invention: When installing the exhaust pipe 601, the ring buckle 1101 is stuck on the exhaust pipe 601, the damping shaft 1102 is inserted into the fixing plate at the front end of the ring buckle 1101, and the two angle pieces 1103 are respectively inserted into the two ends of the damping shaft 1102, and the angle of the angle piece 1103 is adjusted according to the installation position of the exhaust pipe 601, and then the nut on the damping shaft 1102 is tightened, and then the second rotating pair 1104 is installed, and the movable end of the second rotating pair 1104 is adjusted to align with the bottom of the rear end mounting cover of the all-terrain vehicle, and then tightened. The nut on the second rotating pair 1104 fixes the rotation angle of the second rotating pair 1104, and the second shock absorber 1105 is aligned with the bottom mounting position of the decorative cover at the rear end of the all-terrain vehicle along with the angle of the second rotating pair 1104. The two exhaust pipes 601 are respectively installed at the mounting positions at the bottom of the corresponding all-terrain vehicle through the connecting mechanism 11. At this time, the corrugated long tube 5 is deformed along with the position where the exhaust pipe 601 is connected. According to the deformed shape of the corrugated long tube 5, the vertical double-hole plate 1004, the first single-hole plate 1003 and the second single-hole plate 1005 are spliced. , and tighten the bolts therebetween to fix the angle and length of the vertical double-hole plate 1004, the first single-hole plate 1003 and the second single-hole plate 1005, so that the distance between the fixing plate 1001 and the fixing flange 501 is fixed to prevent the corrugated long tube 5 from being excessively deformed during the movement of the all-terrain vehicle. The first iron ring 1006 is sleeved in the second iron ring 1007 and can move slightly, so that the second single-hole plate 1005 and the vertical double-hole plate 1004 fixed thereto can both move slightly. During the movement, the first single-hole plate 1006 03 The upper end moves in the long groove on the fixed plate 1001, so that the corrugated long tube 5 is also slightly deformed. The horizontal double-hole plate 1008 passes through the distance between the two corrugated long tubes 5, fixes the horizontal double-hole plate between the vertical double-hole plates 1004 and tightens the bolts to fix the distance between the left and right vertical double-hole plates 1004, so that a bracket is formed between the first single-hole plate 1003, the second single-hole plate 1005, the vertical double-hole plate 1004 and the horizontal double-hole plate 1008, which can adapt to the fixed plate 1001 and the two fixed flanges 501 The small range of adjustment of the spacing between them is then used to fix the second shock absorber 1105 to the bottom of the decorative cover by bolts. When installing the disassembly mechanism 8, the sleeve 803 is inserted into the lower ventilator 801, the ventilators 801 at both ends are aligned, and the rubber sleeve 802 is inserted so that the rubber sleeve 802 is inserted into the junction of the two ventilators 801. The upper magnetic sheet 804 is held and pulled upward. When pulling the rope 805, the rope 805 is passed through the open slide groove 807, and the rope 805 is passed through the clamping ring 806. The contact point between the clamping ring 806 and the rope 805 is used as a turning point, which can convert the force of pulling the rope 805 to the surroundings into an upward or downward force. The rope 805 moves in the sleeve 803 with the upper magnetic sheet 804 until the lower magnetic sheet 804 is limited below the sleeve 803, until the sleeve 803 is covered with the rubber sleeve 802 (the material of the rubber sleeve 802 is perfluoroether rubber, which has high temperature resistance,The outer edge of the rubber sleeve 802 is chamfered to facilitate the insertion of the sleeve 803), the sleeve 803 is moved to the junction of the two vent cylinders 801, at this time the sleeve 803 squeezes the rubber sleeve 802, so that the sleeve 803 and the rubber sleeve 802 are interference fit at the connection of the two vent cylinders 801, and the sleeve 803 is fixed between the two vent cylinders 801 to achieve fixation. After fixation, the four magnetic sheets 804 can be magnetically attracted to the magnetic attraction layer of the flange 7 for storage, and two dial plates 905 are held respectively and force is applied in the direction of the fixed protrusion 902 to move the dial plates 905 towards each other, and the sliding protrusion 904 slides with the dial plate 905 into the groove slide rail 901, and the groove slide rail 901 is moved between each pair of flanges 7, at this time the sliding protrusion 904 is aligned with the notch on the flange 7, and the dial plate 905 is released. 05, the restoring force of the spring 903 drives the sliding protrusion 904 to fall into the groove, so as to realize the installation of the first shock absorber 909, and the first shock absorber 909 is adjusted by rotating between the first shock absorber 909 and the fixed protrusion 902, so that the end of the first shock absorber 909 away from the fixed protrusion 902 is installed at the bottom installation position of the all-terrain vehicle, and the position of the disassembly mechanism 8 at the bottom of the all-terrain vehicle is positioned. After the installation is completed, the engine of the all-terrain vehicle is operated, and the engine exhaust gas is collected by the exhaust manifold body 1, enters the corrugated short pipe 2, and is purified by the three-way catalytic converter body 3 for harmful gas. The purified gas is divided into two streams through the diversion pipe 4 and enters the corrugated long pipe 5 and the exhaust pipe 601. The diversion process realizes the weakening of gas noise. The exhaust pipe 601 is separated by three partitions 602. It is divided into four gas spaces. The purified gas entering the exhaust pipe 601 enters the uppermost gas space. The air inlet of the first exhaust pipe 604 is located on the uppermost partition 602. Before the gas enters the first exhaust pipe 604, the gas contacts the reflection wall 603 with a large area in the uppermost gas space. After the noise is weakened by repeated reflections of the reflection wall 603, the gas enters the second gas space through the first exhaust pipe 604. The air outlet of the first exhaust pipe 604 is located at the lower part of the second gas space, and the air inlet of the second exhaust pipe 605 is located at the upper part of the second gas space. The gas discharged from the air outlet of the first exhaust pipe 604 needs to flow from bottom to top in the second gas space, and then enter the air inlet of the second exhaust pipe 605. This process The gas fully contacts the reflection wall 603 in the second gas space. During the contact between the gas and the reflection wall 603, the noise is weakened again after multiple reflections. Then, the gas enters the third gas space through the vent 606 on the second exhaust pipe 605, and the gas is diverted again. The noise is weakened during the diversion process. The gas continues to contact the reflection wall 603 in the third gas space, and the noise is further weakened during the reflection process. Finally, the gas enters the fourth gas space through the outlet of the third exhaust pipe 607 (the air inlet of the third exhaust pipe 607 is located on the bottom partition 602). The fourth gas space is connected to the external ambient air to achieve discharge. At the same time, the purified gas passes through the reflection wall 603 repeatedly during the movement in the four gas spaces to weaken the noise.

[0051] In summary, by providing a diverter pipe, a corrugated long pipe and a reflective wall, diversion and reflection are achieved to weaken noise and improve the silencing efficiency, and the exhaust pipe installation position is adapted to the functions of more models of all-terrain vehicles.

[0052] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An exhaust muffler mechanism for an all-terrain vehicle, comprising an exhaust manifold body (1), characterized in that: The bottom of the exhaust manifold body (1) is provided with a corrugated short pipe (2), a three-way catalytic converter body (3), and a shunt pipe (4) in sequence. Two corrugated long pipes (5) are fixed at the bottom of the shunt pipe (4). The bottoms of the two corrugated long pipes (5) are respectively provided with a muffler (6). The muffler (6) includes an exhaust pipe (601) which is fixedly connected to the bottom ends of the two corrugated long pipes (5). A reflective wall (603) is fixed on the inner wall of the exhaust pipe (601). The reflective wall (603) is made of HT500C. Acoustic material, three baffles (602) are fixed in sequence on the inner wall of the exhaust pipe (601), the top baffle (602) is provided with a first exhaust pipe (604), the two lower baffles (602) are provided with two second exhaust pipes (605), the two second exhaust pipes (605) are evenly provided with a plurality of ventilation holes (606), the ventilation holes (606) are all located between the two lower baffles (602), and the bottom baffle (602) is provided with a third exhaust pipe (607); A splitting mechanism (8) is provided between the exhaust manifold body (1) and the corrugated short pipe (2), between the corrugated short pipe (2) and the three-way catalytic converter body (3), between the three-way catalytic converter body (3) and the diverter pipe (4), and between the corrugated long pipe (5) and the exhaust pipe (601). Flanges (7) are provided at both upper and lower ends of the splitting mechanism (8). The number of flanges (7) is five pairs. Mounting mechanisms (9) are provided between the three pairs of flanges (7) at the top. A connecting mechanism (11) is provided on the muffler (6); The connection mechanism (11) comprises a buckle (1101) sleeved on the exhaust pipe (601), a damping shaft (1102) passing through the front end of the buckle (1101), an angle piece (1103) clamped between a nut on the damping shaft (1102) and the front end of the buckle (1101), a second rotating pair (1104) being fixed to the front ends of the two angle pieces (1103) by bolts, and a second shock absorber (1105) being fixed to the movable end of the second rotating pair (1104); The disassembling mechanism (8) comprises a ventilator (801) fixedly connected to the opposite ends of each pair of flanges (7), a rubber sleeve (802) being sleeved on the two ventilators (801), a sleeve (803) being sleeved on the rubber sleeve (802), ropes (805) being passed through the left and right ends of the top of the sleeve (803), magnetic sheets (804) being fixed at both ends of the rope (805), the magnetic sheets (804) being magnetically connected to the magnetic absorption layer adhered to the opposite ends of the two flanges (7), a clamping ring (806) being fixed on the two ventilators (801), and two open slide grooves (807) for passing the ropes (805) are respectively provided on the two clamping rings (806); The two corrugated long tubes (5) are provided with a fixed support mechanism (10), the fixed support mechanism (10) comprising a fixed plate (1001) fixed on the shunt tube (4), four long grooves being evenly formed on the fixed plate (1001), a limit slider (1002) being slidably connected to the long grooves, a first single-hole plate (1003) being fixed at the bottom of the limit slider (1002), a fixed flange (501) being fixed at the bottom of the corrugated long tube (5), and a second fixed flange (501) being fixed at the top of the fixed flange (501). An iron ring (1007), a first iron ring (1006) is sleeved on the second iron ring (1007), a second single-hole plate (1005) is integrally formed on the top of the first iron ring (1006), a plurality of vertical double-hole plates (1004) are fixed between the first single-hole plate (1003) and the second single-hole plate (1005) by bolts, the plurality of vertical double-hole plates (1004) are fixed to each other by bolts, and two corrugated long tubes (5) are arranged between the front and rear two groups of vertical double-hole plates (1004); Two horizontal double-hole plates (1008) are fixed between the two vertical double-hole plates (1004) corresponding to the left and right sides by bolts, and the two horizontal double-hole plates (1008) are fixed to each other by bolts.

2. The exhaust muffler mechanism of an all-terrain vehicle according to claim 1, characterized in that: The mounting mechanism (9) comprises a groove slide rail (901), a fixed protrusion (902) is integrally formed in the middle of the inner wall of the groove slide rail (901), two sliding protrusions (904) are slidably connected to the inner wall of the groove slide rail (901), a shift plate (905) is integrally formed at the front end of each sliding protrusion (904), a spring (903) is fixed between the two sliding protrusions (904) and the fixed protrusion (902), a first shock absorber (909) is rotatably connected to the front end of the fixed protrusion (902), and the groove slide rail (901) is vertically clamped at a front position between each pair of flanges (7), and each pair of flanges (7) is provided with a notch having the same outer diameter as the sliding protrusion (904) at the front end.

3. The exhaust muffler mechanism of an all-terrain vehicle according to claim 2, characterized in that: A circular hole is formed at the front end of the fixed protrusion (902), a bearing (906) is interference-fitted in the circular hole, a shaft neck (907) is key-connected to the inner wall of the bearing (906), a first rotating pair (908) is fixed to one end of the shaft neck (907) away from the bearing (906), and a first shock absorber (909) is fixed to the movable end of the first rotating pair (908).

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