An exhaust silencer for a power car and a power car

Abstract

The utility model relates to a kind of exhaust muffler of power supply vehicle and power supply vehicle, first turnover cover and second turnover cover are respectively set in the two sides of exhaust port, the bottom of first turnover cover and second turnover cover is respectively hinged with the carriage of power supply vehicle;Two first flow guides are respectively located in the inside of the other two sides of exhaust port, two first flow guides are respectively connected with the left and right sides of first turnover cover;Two second flow guides are respectively located in the inside of the other two sides of exhaust port, two second flow guides are respectively connected with the left and right sides of second turnover cover, two second flow guides are respectively located in the inside of two first flow guides;First turnover mechanism is used to turn over first turnover cover and two first flow guides up and down, to open or close exhaust port;Second turnover mechanism is used to turn over second turnover cover and two second flow guides up and down, to open or close exhaust port.When working, form the exhaust passage that is closed in all directions upward, reduce noise, reduce the influence to surrounding environment.

Description

Technical Field

[0001] This utility model relates to the field of emergency rescue equipment technology, and in particular to an exhaust muffler for a power supply vehicle and the power supply vehicle itself. Background Technology

[0002] The vehicle-mounted gas turbine power supply vehicle is equipped with a generator set powered by a gas turbine. The vehicle boasts advantages such as high power density, small size, light weight, high reliability, simple maintenance, low maintenance cost, outstanding load capacity, high-quality output power, and high mobility. With its good applicability and ability to operate outdoors, it can serve as emergency power supply equipment in fields such as communications, telecommunications, coal mines, oil fields, and nuclear power, playing a particularly important role in power restoration during sudden power outages.

[0003] The existing generator set power vehicle generates electricity by driving a generator through a gas turbine. Currently, during operation, the exhaust port of the exhaust muffler is not completely sealed, resulting in loud noise at the exhaust port. This not only disturbs the surrounding environment but also affects the communication efficiency of on-site rescue personnel, delays the rescue progress, and has an adverse impact on the entire rescue environment. Summary of the Invention

[0004] Therefore, it is necessary to provide an exhaust muffler for a power supply vehicle and a power supply vehicle in order to solve the technical problem that existing generator power supply vehicles use gas turbines to drive generators for power generation. Currently, during operation, the exhaust port of the exhaust muffler is not completely sealed, resulting in loud noise at the exhaust port. This not only disturbs the surrounding environment but also affects the communication efficiency of on-site rescue personnel, delays the rescue progress, and has an adverse impact on the entire rescue environment.

[0005] To achieve the above objectives, the inventor provides an exhaust muffler for a power vehicle, comprising:

[0006] An exhaust port is provided on the carriage of the power supply vehicle;

[0007] First flip cover;

[0008] The second flip cover, the first flip cover and the second flip cover are respectively disposed on both sides of the exhaust port, the first flip cover and the second flip cover are disposed opposite to each other, and the bottom of the first flip cover and the second flip cover are respectively hinged to the carriage of the power supply vehicle.

[0009] Two first guide plates are located on the inner sides of the other two sides of the exhaust port, and the two first guide plates are arranged opposite each other at intervals. The two first guide plates are respectively connected to the left and right sides of the first flip cover.

[0010] Two second guide vanes are located on the inner sides of the other two sides of the exhaust port, and the two second guide vanes are arranged opposite each other at intervals. The two second guide vanes are connected to the left and right sides of the second flip cover, and the two second guide vanes are located on the inner sides of the two first guide vanes.

[0011] A first flipping mechanism is connected to the first flipping cover. The first flipping mechanism is used to flip the first flipping cover and the two first guide plates up and down.

[0012] The first flipping mechanism and the second flipping mechanism are connected to the second flipping cover. The second flipping mechanism is used to flip the second flipping cover and the two second guide plates up and down. The first flipping mechanism and the second flipping mechanism cooperate with each other to open or close the exhaust port.

[0013] As a preferred structure of this utility model, the first flipping mechanism includes two first electric push rods, which are respectively located on the left and right sides of the first flipping cover. One end of each of the two first electric push rods is connected to the left and right sides of the first flipping cover, and the other end of each of the two first electric push rods is connected to the left and right sides of the carriage of the power supply vehicle.

[0014] The second flipping mechanism includes two second electric push rods, which are located on the left and right sides of the second flipping cover, respectively. One end of each second electric push rod is connected to the left and right sides of the second flipping cover, and the other end of each second electric push rod is connected to the left and right sides of the power supply vehicle.

[0015] As a preferred structure of this utility model, the shape of the first guide plate is arc-shaped, fan-shaped, or triangular;

[0016] The second guide vane is arc-shaped, fan-shaped, or triangular.

[0017] As a preferred structure of this utility model, the top of the first flip cover is provided with a protrusion; or

[0018] The top of the second flip cover has a protrusion.

[0019] As a preferred structure of this utility model, the top of the first flip cover is provided with a sealing component; or

[0020] The top of the second flip cover is provided with a sealing component.

[0021] As a preferred structure of this utility model, the exhaust muffler further includes a venting groove and a muffler assembly, wherein the muffler assembly is disposed in the venting groove.

[0022] As a preferred structure of this utility model, the silencing component includes multiple air pipes, which are evenly and separately arranged in the ventilation groove.

[0023] As a preferred structure of this utility model, the plurality of air tubes are arranged in an array, and the plurality of air tubes are provided with a plurality of air holes.

[0024] As a preferred structure of this utility model, the noise reduction assembly further includes a first noise reduction component, which is disposed between the plurality of tracheas.

[0025] The advantages of the above technical solution, which differs from the existing technology, are as follows: When the exhaust muffler of the power vehicle of this utility model is in operation, the exhaust port needs to be opened. At this time, the first flipping mechanism flips the first flipping cover and two first guide plates upwards, and the second flipping mechanism flips the second flipping cover and two second guide plates upwards, thereby opening the exhaust port. The first and second flipping covers are located on the front and rear sides of the exhaust port, and the two first guide plates and two second guide plates are located on the left and right sides of the exhaust port, forming a closed, upward-facing exhaust channel. The exhaust port is fully shielded, which can effectively reduce the directional and rapidly attenuating high-frequency noise generated during the operation of the power vehicle, reduce noise, minimize the impact on the surrounding environment, improve the on-site emergency rescue environment, and enhance the communication efficiency and working comfort of emergency rescue personnel.

[0026] To achieve the above objectives, the inventors also provide a power vehicle, including an exhaust muffler of any of the power vehicles described above.

[0027] The advantages of the above technical solution, which differs from the existing technology, are as follows: In the power supply vehicle of this utility model, the exhaust muffler of the power supply vehicle needs to open the exhaust port during operation. At this time, the first flipping mechanism flips the first flipping cover and two first guide plates upward, and the second flipping mechanism flips the second flipping cover and two second guide plates upward, thereby opening the exhaust port. At this time, the first flipping cover and the second flipping cover are located on the front and rear sides of the exhaust port, and the two first guide plates and the two second guide plates are located on the left and right sides of the exhaust port, forming an upward exhaust channel that is closed on all sides. The exhaust port is fully covered on all sides, which can effectively reduce the directional and fast-attenuating high-frequency noise generated when the power supply vehicle is running, reduce noise, reduce the impact on the surrounding environment, improve the on-site emergency rescue environment, and improve the communication efficiency and working comfort of emergency rescue personnel.

[0028] The above description of the invention is merely an overview of the technical solution of this application. In order to enable those skilled in the art to better understand the technical solution of this application and to implement it based on the description and drawings, and to make the above-mentioned objectives and other objectives, features and advantages of this application easier to understand, the following description is provided in conjunction with the specific embodiments and drawings of this application. Attached Figure Description

[0029] The accompanying drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of specific embodiments of this application and other related content, and should not be considered as limitations on this application.

[0030] In the accompanying drawings of the instruction manual:

[0031] Figure 1 This is a schematic diagram of the exhaust port closure of the exhaust muffler described in a specific embodiment;

[0032] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0033] Figure 3 This is a schematic diagram of the structure of the exhaust port of the exhaust muffler described in the specific embodiment.

[0034] Figure 4 This is a front view of the exhaust muffler described in the specific embodiment;

[0035] Figure 5 This is a side view of the exhaust muffler described in a specific embodiment.

[0036] The reference numerals used in the above figures are explained as follows:

[0037] 100. Train carriage

[0038] 200. Exhaust muffler

[0039] 1. Exhaust port,

[0040] 2. First flip cover; 201. Sealing component;

[0041] 3. Second flip cover, 301. Protrusion,

[0042] 4. First deflector plate,

[0043] 5. Second deflector plate,

[0044] 6. First flipping mechanism,

[0045] 7. Second flipping mechanism,

[0046] 8. Ventilation slots,

[0047] 9. Noise reduction assembly; 901. Trachea; 902. First noise reduction component. Detailed Implementation

[0048] To illustrate the possible application scenarios, technical principles, implementable specific solutions, and achievable objectives and effects of this application in detail, the following description, in conjunction with the listed specific embodiments and accompanying drawings, provides a detailed explanation. The embodiments described herein are merely illustrative of the technical solutions of this application and are therefore intended to limit the scope of protection of this application.

[0049] In this document, the term "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The term "embodiment" appearing in various places throughout the specification does not necessarily refer to the same embodiment, nor does it specifically limit its independence or connection with other embodiments. In principle, in this application, as long as there are no technical contradictions or conflicts, the technical features mentioned in each embodiment can be combined in any way to form corresponding implementable technical solutions.

[0050] Unless otherwise defined, the technical terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the use of related terms herein is merely for the purpose of describing particular embodiments and is not intended to limit this application.

[0051] In the description of this application, the term "and / or" is used to describe the logical relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A exists, B exists, and A and B exist simultaneously. Additionally, the character " / " in this document generally indicates that the preceding and following objects have an "or" logical relationship.

[0052] In this application, terms such as “first” and “second” are used only to distinguish one entity or operation from another, and do not necessarily require or imply any actual quantity, hierarchy or order relationship between these entities or operations.

[0053] Unless otherwise specified, the use of terms such as “comprising,” “including,” “having,” or other similar expressions in this application is intended to cover non-exclusive inclusion, which does not exclude the presence of additional elements in a process, method, or product that includes the stated elements, such that a process, method, or product that includes a list of elements may include not only those defined elements but also other elements not expressly listed, or elements inherent to such a process, method, or product.

[0054] Similar to the understanding in the Examination Guidelines, in this application, expressions such as "greater than," "less than," and "exceeding" are understood to exclude the stated number; expressions such as "above," "below," and "within" are understood to include the stated number. Furthermore, in the description of the embodiments in this application, "multiple" means two or more (including two), and similar expressions related to "multiple" are also understood in this way, such as "multiple groups" and "multiple times," unless otherwise explicitly specified.

[0055] In the description of the embodiments of this application, the space-related expressions used, such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "vertical," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," indicate the orientation or positional relationship based on the orientation or positional relationship shown in the specific embodiments or drawings. These expressions are only for the convenience of describing the specific embodiments of this application or for the reader's understanding, and do not indicate or imply that the device or component referred to must have a specific position, a specific orientation, or be constructed or operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. Furthermore, in this context, it should be understood that when it is mentioned that an element is connected "on" or "below" another element, it can be directly connected not only to the other element "on" or "below," but also indirectly connected to the other element "on" or "below" through an intermediate element.

[0056] Unless otherwise expressly specified or limited, the terms "installation," "connection," "linking," "fixing," and "setting," as used in the description of the embodiments of this application, should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral setting; it can be a mechanical connection, an electrical connection, or a communication connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two components or the interaction between two components. For those skilled in the art to which this application pertains, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0057] Please see Figures 1 to 5 This embodiment relates to an exhaust muffler 200 for a power vehicle, including an exhaust port 1, a first flip cover 2, a second flip cover 3, two first guide plates 4, two second guide plates 5, a first flipping mechanism 6, and a second flipping mechanism 7; wherein the exhaust port 1 is located on the top of the front end of the power vehicle's carriage 100, and the exhaust port 1 is the exhaust outlet of the gas turbine on the power vehicle.

[0058] Furthermore, the first flip cover 2 and the second flip cover 3 are respectively disposed on the front and rear sides of the exhaust port 1. The first flip cover 2 and the second flip cover 3 are disposed opposite to each other. The bottom of the first flip cover 2 and the second flip cover 3 are respectively hinged to the carriage 100 of the power supply vehicle to facilitate the rotation of the first flip cover 2 and the second flip cover 3.

[0059] Furthermore, the two first guide plates 4 are respectively located on the inner sides of the other two sides of the exhaust port 1, that is, the two first guide plates 4 are respectively located on the inner sides of the left and right sides of the exhaust port 1, and the two first guide plates 4 are arranged opposite each other at a distance. One side of the two first guide plates 4 is fixedly connected to the left and right sides of the first flip cover 2, respectively. The two second guide plates 5 are respectively located on the inner sides of the other two sides of the exhaust port 1, that is, the two second guide plates 5 are respectively located on the inner sides of the left and right sides of the exhaust port 1, and the two second guide plates 5 are arranged opposite each other at a distance. The two second guide plates 5 are respectively fixedly connected to the left and right sides of the second flip cover 3, and the two second guide plates 5 are respectively located on the inner sides of the two first guide plates 4; wherein the two first guide plates 4 and the two second guide plates 5 are all located on the inner sides of the exhaust port 1, so that the two first guide plates 4 and the two second guide plates 5 can be flipped up and down within the exhaust port 1.

[0060] Furthermore, the first flipping mechanism 6 is connected to the first flipping cover 2, and the first flipping mechanism 6 is used to flip the first flipping cover 2 and the two first guide plates 4 up and down; the second flipping mechanism 7 is connected to the second flipping cover 3, and the second flipping mechanism 7 is used to flip the second flipping cover 3 and the two second guide plates 5 up and down. The first flipping mechanism and the second flipping mechanism cooperate with each other to open or close the exhaust port 1. The first flipping mechanism 6 and the second flipping mechanism 7 serve as the driving force to flip the first flipping cover 2, the two first guide plates 4, the second flipping cover 3, and the two second guide plates 5 up and down, making operation convenient, time-saving, labor-saving, and improving work efficiency.

[0061] Specifically, in this embodiment, the exhaust muffler 200 of the power vehicle needs to open the exhaust port 1 during operation. At this time, the first flipping mechanism 6 flips the first flipping cover 2 and the two first guide plates 4 upward, and the second flipping mechanism 7 flips the second flipping cover 3 and the two second guide plates 5 upward, thereby opening the exhaust port 1. At this time, the first flipping cover 2 and the second flipping cover 3 are located on the front and rear sides of the exhaust port 1, and the two first guide plates 4 and the two second guide plates 5 are located on the left and right sides of the exhaust port 1, forming an upward exhaust channel that is closed on all sides. The exhaust port 1 is fully covered, which can effectively reduce the directional and fast-attenuating high-frequency noise generated when the power vehicle is running, reduce noise, reduce the impact on the surrounding environment, improve the on-site emergency rescue environment, and improve the communication efficiency and working comfort of emergency rescue personnel.

[0062] Optionally, in some embodiments, such as Figures 1 to 3 As shown, the first flipping mechanism 6 includes two first electric actuators, which are located on the left and right sides of the first flipping cover 2, respectively. One end of each first electric actuator is connected to the left and right sides of the first flipping cover 2 via a pin, and the other end is fixedly connected to the left and right sides of the power supply vehicle's carriage 100, respectively. Further, the second flipping mechanism 7 includes two second electric actuators, which are located on the left and right sides of the second flipping cover 3, respectively. One end of each second electric actuator is connected to the left and right sides of the second flipping cover 3 via a pin, and the other end is fixedly connected to the left and right sides of the power supply vehicle's carriage 100, respectively. The two first and two second electric actuators serve as the driving force to flip the first flipping cover 2, the two first guide plates 4, the second flipping cover 3, and the two second guide plates 5 up and down, making operation convenient, time-saving, labor-saving, and improving work efficiency. In other embodiments, the first and second electric actuators can be replaced by cylinders or hydraulic cylinders.

[0063] Optionally, in some embodiments, such as Figures 1 to 3 As shown, the first guide plate 4 is arc-shaped, and the second guide plate 5 is arc-shaped. The arc shapes of the first guide plate 4 and the second guide plate 5 are such that, while the first flipping mechanism 6 and the second flipping mechanism 7 drive the first flipping cover 2 and the second flipping cover 3 to flip, they can also drive the first guide plate 4 and the second guide plate 5 to flip. Alternatively, in another embodiment, the first guide plate 4 is fan-shaped or triangular; the second guide plate 5 is fan-shaped or triangular.

[0064] Optionally, in some embodiments, such as Figures 1 to 3As shown, the top of the first flip cover 2 is provided with a protrusion 301; or the top of the second flip cover 3 is provided with a protrusion 301. Further, the top of the first flip cover 2 is provided with a sealing member 201; or the top of the second flip cover 3 is provided with a sealing member 201. Specifically, in this embodiment, as... Figure 2 As shown, the top of the second flip cover 3 has a protrusion 301. This protrusion 301 allows the exhaust port 1 to be closed, pressing against the top of the first flip cover 2, thus preventing rainwater and dust from entering the carriage 100 through the gap between the first and second flip covers 3, achieving a sealing effect. The top of the first flip cover 2 has a sealing component 201, which is a sealing strip. The sealing component 201 increases the sealing between the first and second flip covers 3, further preventing rainwater and dust from entering the carriage 100 through the gap between them, thus achieving a sealing effect. In other embodiments, the protrusion 301 can also be provided on the top of the first flip cover 2, and the sealing component 201 can be provided on the top of the second flip cover 3.

[0065] Optionally, in some embodiments, such as Figure 4 and Figure 5 As shown, the exhaust muffler 200 also includes a venting groove 8 and a muffler component 9. The muffler component 9 is disposed in the venting groove 8, and the muffler component 9 can reduce noise.

[0066] Optionally, in some embodiments, such as Figure 4 and Figure 5 As shown, the noise reduction component 9 includes multiple air pipes 901, which are evenly spaced within the ventilation slot 8. The main function of the multiple air pipes 901 is to divert airflow, increase the reflection path of sound waves, and reduce noise intensity through the principles of sound wave reflection and interference.

[0067] Optionally, in some embodiments, such as Figure 4 and Figure 5 As shown, multiple air tubes 901 are arranged in an array. For the same volume, an array of multiple air tubes 901 provides a significantly better noise reduction effect than resistive or reactive silencers. Multiple air holes are distributed on each of the air tubes 901, further enhancing the reflection and dissipation of sound waves.

[0068] Optionally, in some embodiments, such as Figure 4 and Figure 5As shown, the silencing assembly 9 further includes a first noise reduction component 902, which is disposed between the plurality of air pipes 901. The first noise reduction component 902 is made of a material with good sound absorption properties, such as sound-absorbing cotton, which can absorb the remaining noise energy and further improve the silencing effect. Through the synergistic effect of the air pipes 901 and the first noise reduction component 902, the exhaust muffler 200 can effectively reduce the noise generated during the exhaust process of the gas turbine, ensuring that the noise level of the power vehicle during operation meets relevant standards and requirements, reducing the impact on the surrounding environment, improving the on-site emergency response environment, and enhancing the communication efficiency and working comfort of emergency response personnel.

[0069] Please see Figures 1 to 5 This embodiment relates to a power supply vehicle, including a carriage 100 and an exhaust muffler 200, wherein the exhaust port 1 is located on the top of the front end of the carriage 100. During operation, the exhaust port 1 needs to be opened. At this time, the first flipping mechanism 6 flips the first flipping cover 2 and two first guide plates 4 upward, and the second flipping mechanism 7 flips the second flipping cover 3 and two second guide plates 5 upward, thereby opening the exhaust port 1. At this time, the first flipping cover 2 and the second flipping cover 3 are located on the front and rear sides of the exhaust port 1, and the two first guide plates 4 and the two second guide plates 5 are located on the left and right sides of the exhaust port 1, forming an upward exhaust channel that is closed on all sides. The exhaust port 1 is fully covered on all sides, which can effectively reduce the directional and fast-attenuating high-frequency noise generated when the power supply vehicle is running, reduce noise, reduce the impact on the surrounding environment, improve the on-site emergency rescue environment, and improve the communication efficiency and working comfort of emergency rescue personnel. Furthermore, the exhaust muffler 200 adopts a unique design of ventilation groove 8 and muffler assembly (air pipe 901, air hole, first noise reduction component 902). Through the combination of physical structure and sound-absorbing materials, it achieves wide-band noise reduction of exhaust noise, significantly reduces the noise generated when the power vehicle is running, improves the on-site emergency rescue environment, and enhances the communication efficiency and working comfort of emergency rescue personnel.

[0070] Finally, it should be noted that although the above embodiments have been described in the text and drawings of this application, this should not limit the scope of patent protection of this application. Any technical solutions that are based on the essential concept of this application and utilize the content described in the text and drawings of this application, resulting in equivalent structural or procedural substitutions or modifications, as well as the direct or indirect application of the technical solutions of the above embodiments to other related technical fields, are all included within the scope of patent protection of this application.

Claims

1. An exhaust muffler for a power vehicle, characterized in that, include: An exhaust port is provided on the carriage of the power supply vehicle; First flip cover; The second flip cover, the first flip cover and the second flip cover are respectively disposed on both sides of the exhaust port, the first flip cover and the second flip cover are disposed opposite to each other, and the bottom of the first flip cover and the second flip cover are respectively hinged to the carriage of the power supply vehicle. Two first guide plates are located on the inner sides of the other two sides of the exhaust port, and the two first guide plates are arranged opposite each other at intervals. The two first guide plates are respectively connected to the left and right sides of the first flip cover. Two second guide vanes are located on the inner sides of the other two sides of the exhaust port, and the two second guide vanes are arranged opposite each other at intervals. The two second guide vanes are connected to the left and right sides of the second flip cover, and the two second guide vanes are located on the inner sides of the two first guide vanes. A first flipping mechanism is connected to the first flipping cover. The first flipping mechanism is used to flip the first flipping cover and the two first guide plates up and down. The first flipping mechanism and the second flipping mechanism are connected to the second flipping cover. The second flipping mechanism is used to flip the second flipping cover and the two second guide plates up and down. The first flipping mechanism and the second flipping mechanism cooperate with each other to open or close the exhaust port.

2. The exhaust muffler for the power vehicle according to claim 1, characterized in that: The first flipping mechanism includes two first electric push rods, which are located on the left and right sides of the first flipping cover, respectively. One end of each first electric push rod is connected to the left and right sides of the first flipping cover, and the other end of each first electric push rod is connected to the left and right sides of the power supply vehicle. The second flipping mechanism includes two second electric push rods, which are located on the left and right sides of the second flipping cover, respectively. One end of each second electric push rod is connected to the left and right sides of the second flipping cover, and the other end of each second electric push rod is connected to the left and right sides of the power supply vehicle.

3. The exhaust muffler for the power vehicle according to claim 1, characterized in that: The first guide vane is arc-shaped, fan-shaped, or triangular in shape; The second guide vane is arc-shaped, fan-shaped, or triangular.

4. The exhaust muffler for the power supply vehicle according to claim 1, characterized in that: The top of the first flip cover has a protrusion; or The top of the second flip cover has a protrusion.

5. The exhaust muffler for the power vehicle according to claim 1 or 4, characterized in that: The top of the first flip cover is provided with a sealing component; or The top of the second flip cover is provided with a sealing component.

6. The exhaust muffler of the power vehicle according to any one of claims 1 to 4, characterized in that: The exhaust muffler also includes a venting groove and a muffler assembly, the muffler assembly being disposed within the venting groove.

7. The exhaust muffler for the power vehicle according to claim 6, characterized in that: The noise reduction assembly includes multiple air pipes, which are evenly spaced apart within the ventilation slot.

8. The exhaust muffler for the power vehicle according to claim 7, characterized in that: The multiple air tubes are arranged in an array, and multiple air holes are distributed on the multiple air tubes.

9. The exhaust muffler for the power supply vehicle according to claim 7, characterized in that: The noise reduction assembly further includes a first noise reduction component, which is disposed between the plurality of airways.

10. A power supply vehicle, characterized in that, Includes the exhaust muffler of the power vehicle as described in any one of claims 1 to 9 above.

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