Noise reduction device of emergency drainage vehicle

Abstract

The utility model provides a noise reduction device of an emergency drainage vehicle, which comprises an automobile chassis of the drainage vehicle and a carriage arranged on the chassis, and is characterized in that a generator set is arranged in the carriage, a noise reduction box is arranged at the front end of the carriage, and the noise reduction box is provided with a silencing system, a cooling system and a radiator; according to the noise reduction structure for cooling and air exhausting of the radiator, the noise reduction box, the noise reduction system, the cooling system and the radiator are arranged, noise reduction can be conducted on the radiator, noise reduction can also be conducted on the generator set, and noise reduction of an emergency drainage vehicle is achieved.

Description

TECHNICAL FIELD

[0001] The utility model mainly relates to the technical field of noise reduction, specifically to a noise reduction device of emergency drainage vehicle. BACKGROUND

[0002] Emergency drainage vehicle is a special vehicle equipped with diesel generator set, drainage system, lighting system, power transmission line and other devices, which is used for urban waterlogging emergency drainage or other purposes to provide backup power supply. As a rescue vehicle for urban roads, residential underground garages and other scenes, with the progress of society, higher requirements are put forward for various aspects of pollution in the operation site. The noise problem of the generator set is difficult to solve in vehicle design and manufacturing. The noise of the generator set mainly comes from mechanical noise, exhaust noise, air inlet noise, radiator cooling fan exhaust noise and other aspects. The noise of the generator set commonly used in the prior art is basically around 110dB when working in an open state (without setting a sealed box for noise reduction). Not only does it destroy the quiet environment, but also causes noise pollution, which cannot improve the practicability. CONTENT OF THE UTILITY MODEL

[0003] In order to solve the problems in the background art, the utility model provides a noise reduction device of emergency drainage vehicle.

[0004] The utility model adopts the following technical scheme: a noise reduction device of emergency drainage vehicle, including the automobile chassis of drainage vehicle and the carriage setting on the chassis, the carriage is provided with the generator set, the front end of the carriage is provided with the noise reduction box, the noise reduction box is provided with the sound attenuation system, cooling system and radiator.

[0005] Preferably, the sound attenuation system comprises a primary muffler and a secondary muffler, the primary muffler and the secondary muffler are arranged on the two sides respectively, the exhaust port of the generator set is connected with the air inlet of the primary muffler, the air outlet of the primary muffler is connected with the air inlet of the secondary muffler 12, and the secondary muffler is connected with the exhaust pipe and extends out of the carriage.

[0006] Preferably, the noise reduction box is symmetrically provided with a heat dissipation and sound insulation cavity on the two sides, and the opening faces upwards.

[0007] Preferably, the inner wall of the heat dissipation and sound insulation cavity is uniformly provided with a plurality of through holes, and is uniformly arranged with heat insulation and sound absorption materials.

[0008] Preferably, the noise reduction box is symmetrically provided with a sound attenuation cavity, and the sound attenuation cavity is communicated with the heat dissipation and sound insulation cavity through the through hole.

[0009] Preferably, the front end of the radiator is provided with a main air guide plate with adjustable opening degree, and the two sides corresponding to the main air guide plate are provided with side air guide plates.

[0010] Preferably, the lower end of the main air deflector is movably connected to the carriage via a hinge.

[0011] Preferably, the bottom hinged flip support of the main air deflector of the carriage is provided with a rainwater guide channel.

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

[0013] The noise reduction structure for radiator cooling exhaust designed in this utility model, through the noise reduction box and the set silencer system, cooling system and radiator, can not only reduce the noise of the radiator, but also the noise of the generator set, thereby reducing the noise of the emergency drainage vehicle; furthermore, through the symmetrical arrangement of the primary silencer and the secondary silencer, the noise of the generator can be fully reduced.

[0014] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0015] Fig. 1 This is a top sectional view of the generator set installation structure of this utility model;

[0016] Fig. 2 This is a side sectional view of the generator set installation structure of this utility model;

[0017] Fig. 3 This is a schematic diagram of the carriage of this utility model.

[0018] In the diagram: 1. Generator set; 11. Primary silencer; 12. Secondary silencer; 2. Noise reduction box; 21. Silencer cavity; 22. Heat dissipation and sound insulation cavity; 23. Main air guide plate; 24. Side air guide plate; 25. Rainwater diversion channel; 26. Radiator. Detailed Implementation

[0019] To facilitate understanding of this utility model, a more comprehensive description of the utility model will be given below with reference to the accompanying drawings, which show several embodiments of the utility model. However, the utility model can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the disclosure of the utility model more thorough and comprehensive.

[0020] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0022] Please refer to the appendix carefully. Figs. 1-3 A noise reduction device for an emergency drainage vehicle includes a driver's cab, a vehicle chassis, and a cargo box. The cargo box is equipped with a generator set 1, and the front of the cargo box is a noise reduction box 2 consisting of an exhaust system and a radiator 26 cooling system. The noise reduction box 2 is equipped with a muffler cavity 21, a heat dissipation and sound insulation cavity 22, main and side air guide plates 24, a rainwater diversion channel 25, and a radiator 26.

[0023] The noise reduction system includes a primary muffler 11 and a secondary muffler 12, which are respectively located on both sides. The exhaust port of the generator set 1 is connected to the air inlet of the primary muffler 11, and the exhaust port of the primary muffler 11 is connected to the air inlet of the secondary muffler 12. The exhaust pipe of the secondary muffler 12 extends out of the vehicle compartment. The secondary muffler device makes full use of the limited space of the housing and is located on both sides of the radiator 26 (the traditional vehicle muffler device is located at the front of the radiator 26, which results in greater exhaust resistance to the radiator 26 and requires an increased housing length). The engine exhaust port is connected to the air inlet of the primary muffler to reduce low-frequency and mid-low-frequency noise. The exhaust gas after primary muffler is transmitted to the air inlet of the secondary muffler 12 through the exhaust connecting pipe installed on the bottom plate of the noise reduction housing 2 to reduce high-frequency noise, and then discharged from the upper exhaust port to effectively reduce noise pollution.

[0024] The noise reduction box 2 has symmetrically arranged heat dissipation and sound insulation cavities 22 on both sides, with their openings facing upwards; the inner wall of the heat dissipation and sound insulation cavity 22 is evenly provided with multiple through holes, and each is arranged with heat insulation and sound absorption material; the noise reduction box 2 has symmetrically arranged silencer cavities, which are connected to the heat dissipation and sound insulation cavity 22 through through holes; the front end of the radiator 26 is provided with a main air guide plate 23 with an adjustable opening degree, and the corresponding sides of the main air guide plate 23 are provided with side air guide plates 24; the lower end of the main air guide plate 23 is movably connected to the carriage through a hinge; the noise reduction box 2 has heat dissipation and sound insulation cavities 22 on both sides of the box body (which also serve as auxiliary exhaust channels for the radiator 26), and the heat dissipation and sound insulation cavity 22 and the silencer cavity 21 have silencer through holes, and both are arranged with heat insulation and sound absorption material. The airflow exhausted by the fan of radiator 26 is diverted to both sides of radiator 26 through side air guide plate 24. The airflow is transmitted to heat dissipation and sound insulation cavity 22 through the muffler cavity's silencer holes. This causes the hot air to be deflected multiple times, reducing wind speed and noise before being discharged through the top of heat dissipation and sound insulation cavity 22. At the same time, some muffler noise can also be conducted to the vehicle's top area with the hot air.

[0025] The radiator 26 has an adjustable main air deflector 23 at its front end. Side air deflectors 24 are located on either side of the main air deflector 23, diverting some airflow to the left and right muffler chambers 21. The main air deflector 23 opens towards the upper part of the vehicle, reducing airflow resistance and heat conduction between the hot airflow and the back of the cab, and also transmitting noise to the upper part of the vehicle via airflow. The main air deflector 23 can adjust its opening degree according to changes in engine temperature. It opens to its minimum during cold-running operation of the generator set 1 to minimize high noise levels during cold-running. Simultaneously, by adjusting the opening degree, the exhaust volume of the cooling system is changed, optimizing the water temperature control required by the generator set 1 under different ambient temperatures, ensuring the engine operates in a good thermal balance environment and improving engine performance.

[0026] The bottom hinged flip support of the main wind deflector 23 is provided with a rainwater diversion channel 25, which can divert the rainwater flowing in along the main wind deflector 23 during rainy weather operations to the outside.

[0027] The present invention has been described above by way of example in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvement made by adopting the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, shall be within the protection scope of the present invention.

Claims

1. A noise reduction device for an emergency drainage vehicle, comprising a vehicle chassis and a cargo box mounted on the chassis, characterized in that: The carriage is equipped with a generator set (1), and a noise reduction box (2) is installed at the front of the carriage. The noise reduction box (2) is equipped with a sound reduction system, a cooling system and a radiator (26).

2. The noise reduction device for an emergency drainage vehicle according to claim 1, characterized in that: The noise reduction system includes a primary muffler (11) and a secondary muffler (12). The primary muffler (11) and the secondary muffler (12) are respectively located on both sides. The exhaust port of the generator set (1) is connected to the air inlet of the primary muffler (11). The exhaust port of the primary muffler (11) is connected to the air inlet of the secondary muffler (12). The exhaust pipe of the secondary muffler (12) extends out of the carriage.

3. The noise reduction device for an emergency drainage vehicle according to claim 2, characterized in that: The noise reduction box (2) has heat dissipation and sound insulation cavities (22) symmetrically arranged on both sides, with their openings facing upwards.

4. The noise reduction device for an emergency drainage vehicle according to claim 3, characterized in that: The inner wall of the heat dissipation and sound insulation cavity (22) is uniformly provided with multiple through holes, and each hole is provided with heat insulation and sound absorption material.

5. The noise reduction device for an emergency drainage vehicle according to claim 4, characterized in that: The noise reduction box (2) is symmetrically provided with a sound-absorbing cavity, which is connected to the heat dissipation and sound insulation cavity (22) through a through hole.

6. The noise reduction device for an emergency drainage vehicle according to claim 5, characterized in that: The radiator (26) has a main air deflector (23) with adjustable opening at the front end, and side air deflectors (24) are provided on the corresponding sides of the main air deflector (23).

7. The noise reduction device for an emergency drainage vehicle according to claim 6, characterized in that: The lower end of the main air deflector (23) is movably connected to the carriage via a hinge.

8. A noise reduction device for an emergency drainage vehicle according to any one of claims 1-5, characterized in that: The bottom hinged flip support of the main air deflector (23) of the carriage is provided with a rainwater guide channel (25).

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