CN219601222U - Silencing device of vehicle and vehicle - Google Patents

Abstract

The utility model relates to the technical field of vehicle relay valve silencing, and provides a vehicle silencing device and a vehicle, wherein the vehicle silencing device comprises a silencer and a silencing cover, and the silencer is arranged at an exhaust port of a vehicle relay valve and is communicated with the exhaust port; the silencing cover is sleeved outside the silencer and is detachably connected with the relay valve; according to the utility model, exhaust noise discharged from the exhaust port of the relay valve can be effectively absorbed or eliminated through the silencer, so that the exhaust noise of the exhaust port is effectively reduced; and the staff can be according to the exhaust noise size of the gas vent of the relay valve on the vehicle, the selective dismouting amortization cover need not the welding, improves the dismouting convenience to the amortization cover.

Description

A noise reduction device for a vehicle and the vehicle

technical field

The utility model relates to the field of vehicle relay valve noise reduction technology, in particular to a vehicle noise reduction device and a vehicle.

Background technique

The vehicle's relay valve is an accessory in the vehicle's air brake system. It is usually used in conjunction with the vehicle's pneumatic film or pneumatic piston actuator to improve the response characteristics of the pneumatic actuator such as action speed. However, the exhaust port of the relay valve will produce a large exhaust noise when it is working normally.

Utility model content

The problem solved by the utility model is how to eliminate the exhaust noise of the exhaust port of the vehicle relay valve.

In order to solve the above problems, the utility model provides a noise reduction device for a vehicle, including a silencer and a noise reduction cover. The silencer is arranged at the exhaust port of the relay valve of the vehicle and communicates with the exhaust port; The muffler cover is sleeved on the outside of the muffler, and the muffler cover is detachably connected to the relay valve.

Optionally, the sound-absorbing cover is a shell structure, and the shell structure is sleeved on the outside of the sound-absorbing device, and the sound-absorbing device of the vehicle further includes a connecting piece, and one end of the connecting piece is used to connect the A relay valve, the other end of the connecting piece is detachably connected to the sound-absorbing cover.

Optionally, the relay valve has an external joint, and the connecting piece is provided with an opening for avoiding the external joint.

Optionally, the connecting piece includes a first connecting plate and a second connecting plate connected in sequence, the first connecting plate is inclined relative to the second connecting plate, and the first connecting plate is far away from the second connecting plate. One end of the connecting plate is used for connecting with an end of the relay valve away from the exhaust port, and an end of the second connecting plate far away from the first connecting plate is detachably connected with the noise reduction cover.

Optionally, the first connecting plate and the second connecting plate are integrally formed or detachable.

Optionally, the connecting piece is located at one end of the relay valve provided with the exhaust port, and one end of the connecting piece is sleeved on the outer wall of the exhaust port.

Optionally, the sound-absorbing cover is a cylindrical structure with a hollow interior and an opening at one end, the connecting member is a circular structure, and the open end of the cylindrical structure is threadedly connected with the circular structure.

Optionally, the sound-absorbing cover includes a sound-absorbing shell and a sound-absorbing pipe, and the sound-absorbing pipe is arranged inside the sound-absorbing shell.

Optionally, the sound-absorbing device of the vehicle further includes sound-absorbing cotton made of sound-absorbing material or sound-insulating material, and the sound-absorbing cotton is arranged in the sound-absorbing cover.

Compared with the prior art, the utility model arranges the muffler at the exhaust port of the relay valve of the vehicle and communicates with the exhaust port. At this time, the muffler communicates with the exhaust port, so that it can effectively prevent The exhaust noise discharged from the exhaust port of the relay valve is absorbed or eliminated, so as to effectively reduce the exhaust noise of the exhaust port of the relay valve. If faced with a vehicle with high exhaust noise, the exhaust noise cannot be effectively reduced only by the muffler. One end of the muffler cover is assembled and connected with the relay valve so that the muffler cover is sleeved on the outside of the muffler, thereby passing The noise reduction cover can further silence the noise after being silenced by the silencer to improve the noise reduction effect; if facing a vehicle with low exhaust noise, the noise reduction cover can be selectively removed from the relay valve according to the actual needs of the vehicle on site. Only the muffler can be used to effectively silence the relay valve of the vehicle with low exhaust noise. In other words, the staff can selectively remove the noise according to the exhaust noise of the exhaust port of the relay valve on the vehicle. No welding is required to install the sound absorbing cover. On the basis of ensuring the noise reduction effect on the vehicle, the convenience of disassembling and assembling the sound absorbing cover is improved.

The utility model also provides a vehicle, including a relay valve and the above-mentioned noise reduction device for the vehicle.

Therefore, since the vehicle includes the noise reduction device of the vehicle, the vehicle at least has all the technical effects of the noise reduction device of the vehicle, which will not be repeated here.

Description of drawings

Fig. 1 is one of the schematic diagrams of the assembly structure of the muffler and the relay valve of the vehicle in the embodiment of the present invention;

Fig. 2 is one of the schematic diagrams of the explosion structure of the muffler and the relay valve of the vehicle in the embodiment of the present invention;

Fig. 3 is the second schematic diagram of the assembly structure of the silencer device and the relay valve of the vehicle in the embodiment of the utility model;

Fig. 4 is the second schematic diagram of the explosion structure of the muffler device and the relay valve of the vehicle in the embodiment of the utility model.

Explanation of reference signs:

1-Relay valve; 11-Exhaust port; 12-External connector; 121-Intake connector; 122-Control connector; 13-Outlet connector; 2-Muffler; The first connection plate; 42—the second connection plate.

Detailed ways

In order to make the above purpose, features and advantages of the utility model more obvious and easy to understand, specific embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings.

It should be noted that the terms "first" and "second" in the specification and claims of the present utility model and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific order or sequence . It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

In the description of the present utility model, it should be noted that, unless otherwise specified and limited, the terms "installation", "installation", "connection" and "connection" should be understood in a broad sense, for example, it may be a fixed connection, It can also be detachably connected or integrally connected; it can be mechanically connected; it can be directly connected or indirectly connected through an intermediary, and it can be internal communication between two components. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present utility model in specific situations.

In the description of this specification, descriptions with reference to the terms "an embodiment", "an embodiment" and "an implementation" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in this specification. At least one embodiment or embodiment of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or implementations.

In order to solve the above technical problems, as shown in Figure 1, the embodiment of the present utility model provides a noise reduction device for a vehicle, including a silencer 2 and a noise reduction cover 3, and the silencer 2 is arranged at the exhaust port 11 of the relay valve 1 of the vehicle and communicate with the exhaust port 11; the muffler cover 3 is sleeved outside the muffler 2, and the muffler cover 3 is detachably connected with the relay valve 1.

It should be noted that the relay valve 1 has an exhaust port 11, and the muffler 2 is installed on the relay valve 1 and communicated with the exhaust port 11. The muffler can be a spherical muffler or other types of mufflers. As long as the muffler that can silence the exhaust noise from the exhaust port 11 of the relay valve 1 is applicable to this technical solution, details will not be repeated here.

When encountering a vehicle with high exhaust noise from the relay valve 1, the exhaust noise cannot be effectively reduced only by the muffler 2. At this time, the silencer cover 3 can be installed on the relay valve 1, and the silencer cover 3 is set Outside the muffler 2, so as to further eliminate the noise discharged by the muffler 2 to enhance the noise reduction effect; when encountering a vehicle with a small exhaust noise of the relay valve 1, only relying on the muffler 2 can effectively reduce the noise. Exhaust noise, at this time, the sound-absorbing cover 3 can be removed from the relay valve 1, or the sound-absorbing cover 3 need not be installed. Wherein, since the sound-absorbing cover 3 can be sleeved on the outside of the sound-absorbing device 2, the noise after being silenced by the sound-absorbing device 2 can be further attenuated, and the effect of strengthening the sound reduction can be achieved.

Among them, for judging the size of the exhaust noise of the relay valve 1, or in other words, judging whether it is necessary to install the muffler cover 3 on the basis of the muffler 2, it can be judged manually according to different vehicle usage scenarios or other factors. The exhaust noise of the relay valve 1 can be detected by a manual hand-held noise detector. For example, when the exhaust noise detected by the noise detector exceeds a decibel, the noise reduction cover 3 is installed on the relay valve 1. When the noise detection When the exhaust noise detected by the instrument is less than a decibel, the noise reduction cover 3 is removed from the relay valve 1, or there is no need to install the noise reduction cover 3, so the disassembly and assembly conditions of the noise reduction cover 3 are not specifically limited here.

In this embodiment, the muffler 2 is arranged at the exhaust port 11 of the relay valve 1 of the vehicle and communicated with the exhaust port 11. At this time, the muffler 2 that will be the muffler is communicated with the exhaust port 11, thereby The exhaust noise discharged from the exhaust port 11 of the relay valve 1 can be effectively absorbed or eliminated, so as to effectively reduce the interference or inconvenience caused by the exhaust noise of the exhaust port 11 of the relay valve to people's normal life.

If facing a vehicle with high exhaust noise, assemble and connect one end of the muffler cover 3 with the relay valve 1 so that the muffler cover 3 is sleeved on the outside of the muffler 2, so that the muffler can pass through the muffler through the muffler cover. The noise can be further silenced to improve the noise reduction effect; if facing a vehicle with low exhaust noise, the noise reduction cover 3 can be selectively removed from the relay valve 1 according to the actual needs of the vehicle on site, and only the silencer 2 can be used to It can silence the relay valve 1 of the vehicle with less exhaust noise. In other words, the staff can selectively disassemble and assemble the noise reduction cover 3 according to the exhaust noise of the exhaust port 11 of the relay valve 1 on the vehicle, without Welding, on the basis of ensuring the noise reduction effect on the vehicle, improves the convenience of disassembling and assembling the sound-absorbing cover 3 .

In one embodiment of the present utility model, as shown in FIG. 2 and FIG. 4 , the muffler cover 3 is a shell structure, and the shell structure is sleeved outside the muffler 2 . The muffler device of the vehicle also includes a connecting piece 4, One end of 4 is used to connect the relay valve 1, and the other end of the connecting piece 4 is detachably connected with the muffler cover 3.

It should be noted that, when facing a vehicle with relatively high exhaust noise from the exhaust port 11 of the relay valve 1, the sound-absorbing cover 3 is defined as a shell structure with a hollow interior, so that when the sound-absorbing cover 3 is sleeved on the sound-absorbing When the muffler 2 is outside, make the muffler 2 inside the shell structure, communicate with the exhaust port 11 through the muffler 2, so that the noise coming out of the exhaust port 11 will first enter the muffler 2, and then pass through the muffler 2. The exhaust noise of the exhaust port 11 of the movable valve 1 is silenced for the first time, and then the noise silenced by the silencer 2 enters the inner wall of the muffler cover 3 which is a shell structure and continuously reflects until it is weakened, so as to reduce the exhaust noise. Do the second noise reduction, in other words, the exhaust noise of the exhaust port 11 of the relay valve 1 is silenced sequentially through the silencer 2 and the noise reduction cover 3, thereby effectively enhancing the noise reduction effect on the exhaust noise. When facing a vehicle with less exhaust noise from the exhaust port 11 of the relay valve 1, the exhaust noise can be effectively silenced only by the muffler 2. At this time, it is not necessary to install the noise reduction cover 3, or the The cover 3 is removed from the connecting piece 4; the conditions for removing the sound-absorbing cover 3 from the connecting piece 4 can be determined according to the actual vehicle conditions of the on-site vehicle. For example, if the sound-absorbing cover 3 is installed on the relay valve through the connecting piece 4 1, if the vehicle has been working for a long time, the part where the connecting piece 4 is connected to the relay valve 1 is loose due to severe vibration and other reasons, which causes the noise reduction cover 3 to shake and increase the noise. At this time, the noise reduction cover 3 can be replaced and the connecting piece 4 are removed from the relay valve 1; if the noise generated by the shaking does not appear in the sound-absorbing cover, the sound-absorbing cover 3 may not be removed.

Because one end of the connector 4 is used to connect the relay valve 1, and the other end is detachably connected to the sound-absorbing cover 3, so that the sound-absorbing cover 3 that can play the role of sound-absorbing can be selectively disassembled on the relay valve 1, without The muffler cover 3 is welded to the relay valve 1 to improve disassembly efficiency. Wherein, the connection method between the connecting piece 4 and the relay valve 1 can be a fixed connection method or a detachable connection method, which is not specifically limited here; as long as the sound-absorbing cover 3 can be installed or removed from the relay valve 1, The noise reduction cover 3 can be selectively installed according to the exhaust noise of the relay valve 1 of different vehicles, and the flexibility is stronger.

In one embodiment of the present invention, the relay valve 1 has an external joint 12 , and the connecting piece 4 is provided with an opening for avoiding the external joint 12 .

It should be noted that, as shown in FIG. 1 and FIG. 2 , under normal circumstances, the relay valve 1 has an external joint 12, so when the connecting piece 4 is installed on the relay valve 1, the connecting piece 4 and the relay valve 1 The external joint 12 will interfere. Therefore, by opening an opening on the connecting piece 4, and the opening corresponds to the position of the external joint 12, the position of the opening on the connecting piece 4 can avoid the external joint 12, so that the connecting piece 4 can be installed on the relay valve 1 smoothly.

Wherein, the external joint 12 includes an air intake joint 121 and a control joint 122, wherein, one end of the air intake joint 121 communicates with the corresponding air intake on the relay valve 1, and the other end of the air intake joint 121 communicates with the air storage tank of the vehicle ; One end of the control joint 122 communicates with the corresponding control port on the relay valve 1, and the other end of the control joint 122 can be connected to the brake of the vehicle; the relay valve 1 also has an air outlet joint 13, and one end of the air outlet joint 13 is connected to the relay valve. 1, the corresponding air outlet is communicated, and the other end of the air outlet joint 13 can be connected to the anti-lock braking system of the vehicle.

In one embodiment of the present utility model, as shown in FIG. 2 , the connector 4 includes a first connecting plate 41 and a second connecting plate 42 connected in sequence, and the first connecting plate 41 is arranged obliquely relative to the second connecting plate 42. An end of the first connecting plate 41 away from the second connecting plate 42 is used to connect with an end of the relay valve 1 away from the exhaust port 11 , and an end of the second connecting plate 42 away from the first connecting plate 41 is detachably connected to the sound-absorbing cover 3 .

It should be noted that, under normal circumstances, a connecting column and a corresponding connecting nut are provided on the end of the relay valve 1 away from the exhaust port 11. At this time, the connecting column on the relay valve 1 can be used to connect the first connecting plate One end of 41 is installed on the connecting column by opening a hole, and then through the cooperation of the connecting nut and the connecting column, the structure of the relay valve 1 itself is fully utilized to install the first connecting plate 41 on the relay valve 1 , effectively reducing the number of assembly parts between the connector 4 and the relay valve 1, and reducing the cost of accessories; since the muffler 2 is arranged at the exhaust port 11, and the muffler cover 3 can be detachably installed outside the muffler 2, so by connecting the first The piece 4 is inclined relative to the second connecting plate 42, for example, the angle between the two is 90 degrees or close to 90 degrees, so that after the connecting piece 4 is installed on the relay valve 1, the second connecting plate 42 and the following The vertical axis of the movable valve 1 is parallel. At this time, the second connecting plate 42 can also protect the side of the relay valve 1. After the sound-absorbing cover 3 is connected and assembled with the second connecting plate 42, the sound-absorbing cover 3 is just sleeved. On the outside of the muffler 2 , the muffler cover 3 is conveniently installed on the relay valve 1 through the second connecting plate 42 and the first connecting piece 4 .

As shown in Figure 1 and Figure 2, the entire connecting piece 4 is pre-installed on the relay valve 1. When encountering a vehicle with a large exhaust noise of the relay valve 1, it is only necessary to connect the sound-absorbing cover 3 to the second connecting plate. 42 The detachable connection, for example, through the connection of bolts and fasteners, can strengthen the noise reduction effect on the exhaust noise of the relay valve 1 through the noise reduction cover 3; when encountering a vehicle with a small exhaust noise of the relay valve 1, only need By adjusting the bolt fasteners to separate the sound-absorbing cover 3 from the second connecting plate 42 , the sound-absorbing cover 3 can be removed from the relay valve 1 without dismantling the entire connecting piece 4 , so as to improve the removal efficiency of the sound-absorbing cover 3 . In addition, the disassembly and assembly conditions of the noise reduction cover 3 relative to the relay valve are not limited to the exhaust noise of different vehicles, and it is also possible to flexibly choose whether to install the noise reduction cover 3 according to the size of the exhaust noise of the same vehicle under different operating conditions. . The detachable connection between the sound-absorbing cover 3 and the second connecting plate 42 is not limited to the above-mentioned connection with bolts and fasteners, and a method of buckling between the sound-absorbing cover 3 and the second connecting plate 42 can also be adopted, as long as Various connection methods that can satisfy the detachable connection between the sound-absorbing cover 3 and the second connecting plate 42 are applicable to this technical solution, and are not specifically limited here.

In one embodiment of the present invention, the first connecting plate 41 and the second connecting plate 42 are integrally formed or detachable.

It should be noted that if the first connecting plate 41 and the second connecting plate 42 are integrally formed, in other words, the first connecting plate 41 and the second connecting plate 42 can be formed by bending one plate through a bending process, which can effectively The mechanical strength of the connecting piece 4 is increased, so that the connection between the muffler cover 3 and the connecting piece 4 is more stable. If the first connecting plate 41 and the second connecting plate 42 are detachable structures, wherein the detachable connection includes but not limited to bolt fasteners, buckles, etc., when the first connecting plate 41 or the second connecting plate 42 is When deformed and damaged due to long-term use, only one of the connecting plates needs to be replaced, which can effectively reduce the maintenance cost of the connecting piece 4 .

Different from the above embodiments, as shown in FIG. 3 and FIG. 4 , the connecting piece 4 is located at one end of the relay valve 1 provided with the exhaust port 11 , and one end of the connecting piece 4 is sleeved on the outer wall of the exhaust port 11 .

It should be noted that, in the detachable connection mode between the muffler cover 3 and the relay valve 1 , Fig. 3 and Fig. 4 adopt different embodiment structures from Fig. 1 and Fig. 2 . In this embodiment, the connecting piece 4 is installed on the end of the relay valve 1 provided with the exhaust port 11, and one end of the connecting piece 4 is sleeved on the outer wall of the exhaust port 11. At this time, the muffler cover 3 and the connecting piece 4 After the connection, on the basis of strengthening the exhaust noise of the exhaust port 11, compared to the connection between the first connecting plate 41 of the connecting piece 4 in Fig. 1 and Fig. 2 and the end of the relay valve 1 away from the exhaust port 11 In other words, this embodiment can not only reduce the vertical height of the connecting piece 4 and reduce the cost of the connecting piece 4, but also the connecting piece 4 will not interfere with the external interface of the relay valve 1, so as to improve the connection between the connecting piece 4 and the noise reduction cover. 3. Easy disassembly and assembly.

In one embodiment of the present utility model, as shown in FIG. 3 and FIG. 4 , the sound-absorbing cover 3 is a cylindrical structure with a hollow interior and an opening at one end, and the connector 4 is a ring structure. Ring structure threaded connection.

It should be noted that since the exhaust port 11 of the relay valve is usually a circular hole, the muffler 2 can be a spherical muffler, so that the connecting piece 4 is also limited to a ring structure. At this time, one end of the connecting piece 4 It is connected to one end of the exhaust port 11 provided on the relay valve 1, such as a fixed connection. The fixed connection can be fixed by welding, bonding, etc., wherein the ring structure and the exhaust port 11 can be arranged concentrically or non-concentrically. In other words, the circular ring structure corresponds to the vertical axis of the relay valve 1, so that the installation of the connecting piece 4 can make full use of the space below the exhaust port 11 of the relay valve 1, and will not interfere with the connection between the external interface and the relay valve 1. The connection of other devices of the vehicle will interfere with the maintenance work, and because the cylindrical structure and the ring structure are screwed together, it is also convenient for the quick disassembly and assembly of the sound-absorbing cover 3 of the cylindrical structure and the connecting piece 4 of the ring structure. Certainly, the cylindrical structure and the circular structure are not limited to the above-mentioned threaded connection, and may also be connected in a buckle manner, which is not specifically limited here.

In addition, since the connecting piece 4 is arranged on the end of the relay valve 1 provided with the exhaust port 11, after the sound-absorbing cover 3 is connected and assembled with the connecting piece 4, the sound-absorbing cover 3 will completely cover the muffler 2 and the muffler 2 and the muffler 2. The joint of the exhaust port 11 (as shown in Figure 3 ), so that the sound-absorbing cover 3 not only silences the noise discharged after the initial silencer of the muffler 2, but also at the same time eliminates the noise from the exhaust port 11 and the muffler 2. Silence the exhaust noise leaked from the connection between the valves to further eliminate or weaken the exhaust noise of the relay valve 1, and the noise reduction effect is better.

In one embodiment of the present invention, the sound-absorbing cover 3 includes a sound-absorbing shell and a sound-absorbing pipe, and the sound-absorbing pipe is arranged inside the sound-absorbing shell.

It should be noted that the sound-absorbing shell can be a rectangular shell structure, or a cylindrical structure with one end open, and the sound-absorbing pipe can be installed inside the sound-absorbing shell by means of bolts or bonding. The center lines of the silencer and the exhaust port coincide or intersect, and the end of the muffler pipe facing the exhaust port is provided with an air inlet hole, and the end of the muffler pipe away from the exhaust port is provided with an air outlet hole. After the exhaust noise is initially silenced, the smaller exhaust noise enters the silencer shell first, and then enters the interior of the silencer pipe from the air intake hole of the silencer shell. At this time, the exhaust noise is continuously emitted inside the silencer pipe. Refraction and interference, and finally the silenced air is discharged from the air outlet of the silencer pipe, so as to achieve the purpose of further silence and greatly improve the silencer effect.

In one embodiment of the present invention, the noise reduction device of the vehicle further includes sound-absorbing cotton made of sound-absorbing material or sound-insulating material, and the sound-absorbing cotton is arranged in the sound-absorbing cover 3 .

It should be noted that sound-absorbing materials refer to materials with an average sound absorption coefficient greater than 0.2 for the frequency of exhaust noise, and most of the sound-absorbing materials are loose and porous materials, such as slag wool, blankets, etc. When air noise enters the surface of the sound-absorbing material, part of the sound energy of the noise is reflected, part of it penetrates the sound-absorbing material, and part of it is converted from sound energy into heat energy due to the vibration of the sound-absorbing material or the friction with the surrounding medium when the sound propagates in it. Can be lost, that is, the sound is usually absorbed by the sound-absorbing material. Sound insulation material refers to a class of materials, components or structures that can block sound transmission or reduce transmitted sound energy. Materials used to block noise are collectively referred to as sound-insulating materials, and sound-insulating materials can be steel plates, lead plates, wood boards, etc., which are not specifically limited here. The sound-absorbing material or sound-insulating material is used to make the sound-absorbing cotton, and the sound-absorbing cotton is arranged in the sound-absorbing cover 3 (not shown in the figure), so that the noise after the sound-absorbing by the sound-absorbing device 2 is effectively silenced again, to further enhance the sound-absorbing effect .

Another embodiment of the present invention provides a vehicle, including a relay valve 1 and the above-mentioned vehicle noise reduction device.

It should be noted that the muffler 2 in the muffler device of the vehicle communicates with the exhaust port 11 of the relay valve 1, so that the exhaust noise of the exhaust port 11 can be silenced for the first time; When the exhaust noise is different under different vehicles, or due to the difference in the number of brake air chambers and the arrangement of brake components of different vehicles, when the exhaust noise is relatively large, the exhaust noise cannot be effectively eliminated only through the muffler 2. At this time The noise reduction cover 3 is set outside the silencer 2, so that the noise after the noise reduction by the silencer 2 can be silenced for the second time, so as to effectively improve the noise reduction effect; when the exhaust noise is small, for example, only pass through the silencer 2. To effectively eliminate the exhaust noise, there is no need to install the muffler cover 3, or selectively remove the muffler cover 3 from the relay valve 1 according to the vehicle conditions on site, so that it can be selectively installed according to different working conditions or vehicle factors of the vehicle The sound-absorbing cover 3 has strong flexibility.

Although the present disclosure is disclosed as above, the protection scope of the present disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present disclosure, and these changes and modifications will all fall within the protection scope of the present utility model.

Claims (10)

1. A muffler for a vehicle, characterized in that it comprises a muffler (2) and a muffler cover (3), and the muffler (2) is arranged on the exhaust port (11) of the relay valve (1) of the vehicle and communicate with the exhaust port (11); the muffler cover (3) is sheathed outside the muffler (2), and the muffler cover (3) and the relay valve (1) can be Disconnect the connection. 2. The noise reduction device for a vehicle according to claim 1, characterized in that, the noise reduction cover (3) is a casing structure, and the casing structure is sleeved outside the noise reduction device (2), and the The noise reduction device of the vehicle also includes a connecting piece (4), one end of the connecting piece (4) is used to connect the relay valve (1), and the other end of the connecting piece (4) is connected to the soundproof cover (3). ) detachable connection. 3. The noise reduction device for a vehicle according to claim 2, characterized in that, the relay valve (1) has an external joint (12), and the connecting piece (4) is provided with a function for avoiding the external joint (12). 12) The opening. 4. The noise reduction device for a vehicle according to claim 2, characterized in that, the connecting piece (4) comprises a first connecting plate (41) and a second connecting plate (42) connected in sequence, the first connecting plate (41) and the second connecting plate (42) The plate (41) is arranged obliquely relative to the second connecting plate (42), and the end of the first connecting plate (41) away from the second connecting plate (42) is used for connecting with the relay valve (1) The end away from the exhaust port (11) is connected, and the end of the second connecting plate (42) away from the first connecting plate (41) is detachably connected to the sound-absorbing cover (3). 5. The noise reduction device for a vehicle according to claim 4, characterized in that, the first connecting plate (41) and the second connecting plate (42) are integrally formed or detachable. 6. The muffler device for vehicles according to claim 2, characterized in that, the connecting piece (4) is located at one end of the relay valve (1) provided with the exhaust port (11), and the connecting piece (4) is One end of the piece (4) is sheathed on the outer wall of the exhaust port (11). 7. The noise reduction device for a vehicle according to claim 6, characterized in that, the noise reduction cover (3) is a cylindrical structure with a hollow inside and an opening at one end, the connecting piece (4) is a ring structure, and the One end of the cylindrical structure provided with the opening is threadedly connected with the circular ring structure. 8 . The noise reduction device for a vehicle according to any one of claims 1 to 7 , characterized in that, the noise reduction cover ( 3 ) includes a noise reduction case and a sound reduction pipe, and the sound reduction pipe is arranged inside the sound reduction case. 9 . 9. The noise reduction device for a vehicle according to claim 8, characterized in that it further comprises sound-absorbing cotton made of sound-absorbing material or sound-insulating material, and the sound-absorbing cotton is arranged in the sound-absorbing cover (3). 10. A vehicle, characterized by comprising a relay valve (1) and the noise reduction device for the vehicle according to any one of claims 1 to 9.