A sound insulation and noise reduction structure for high-voltage box of urban rail train

Abstract

A sound insulation and noise reduction structure for a high-voltage box of an urban rail train comprises a car body and a high-voltage box arranged on the car body, a connection block is fixedly arranged on the top of the car body, the high-voltage box is fixed to the connection block by connecting bolts, a vibration damping pad is arranged between the top of the connection block and the high-voltage box, a sound insulation component is arranged between the bottom of the high-voltage box and the car body, the bottom of the sound insulation component is pasted on the top of the car body, and a sealing strip is arranged around the sound insulation component and between the connection block. The utility model reduces the noise generated by the high-voltage box vacuum circuit breaker to the interior of the car when opening and closing, and improves the comfort of passengers.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation and noise reduction of urban rail trains, and in particular to a sound insulation and noise reduction structure of a high-voltage box of an urban rail train. Background Art

[0002] In recent years, urban rail transit has become one of the main modes of transportation in major cities in China. The problem of internal noise in urban rail vehicles during operation has gradually become a key factor affecting the commercial operation of urban rail transit, among which the bogie and the roof are the main sources of internal noise in the carriage. The problem of internal noise in the carriage seriously affects the comfort of passengers and the service quality of the passenger information system. Effective noise reduction measures have been implemented in the existing high-voltage boxes on the roofs of urban rail vehicles, but the vacuum circuit breakers in the high-voltage boxes will generate impact noise when opening and closing. The impact noise will be transmitted to the interior of the carriage through air and solid connections. Different people have different human responses to this sudden sound, and some people may even experience palpitations.

[0003] The passive ability of noise reduction without changing the installation structure of the high-voltage box is limited. Through a variety of comparative experiments, the utility model adds noise reduction measures to the high-voltage box to perform sound insulation and noise reduction, and proposes a sound insulation and noise reduction structure for the high-voltage box of urban rail trains. Utility Model Content

[0004] The utility model aims to provide a sound insulation and noise reduction structure for a high-voltage box of an urban rail train, which reduces the noise generated inside the carriage when a vacuum circuit breaker of the high-voltage box is opened and closed, and improves the comfort of passengers.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A sound insulation and noise reduction structure for a high-voltage box of an urban rail train comprises a car body and a high-voltage box arranged on the car body, a connecting block is fixedly provided on the top of the car body, the high-voltage box is fixed to the connecting block by connecting bolts, a vibration-damping pad is provided between the top of the connecting block and the high-voltage box, a sound insulation component is provided between the bottom of the high-voltage box and the car body, the bottom of the sound insulation component is adhered to the top of the car body, and sealing strips are provided around the sound insulation component and between the connecting block.

[0007] As a preferred technical solution, the sound insulation component includes a waterproof layer and a noise reduction material, and the waterproof layer is arranged on six sides of the noise reduction material.

[0008] As a preferred technical solution, the noise reduction material includes two sound insulation boards and sound absorbing cotton, and the sound absorbing cotton is arranged between the two sound insulation boards.

[0009] As a preferred technical solution, the sealing strips are connected at the corners in a stepped overlapping manner.

[0010] As a preferred technical solution, the height of the sealing strip is higher than the height of the connecting block.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. In the utility model, by controlling the two transmission modes of noise, air and solid, the noise generated inside the carriage when the high-voltage box vacuum circuit breaker is opened and closed is reduced, thereby improving the comfort of passengers.

[0013] 2. In the utility model, the existing urban rail train can be modified to achieve noise reduction operation of the high-voltage box without changing the existing high-voltage box installation structure and the car body interior installation structure and without affecting the insulation and high-voltage performance of the high-voltage box. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings:

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is an enlarged view of point A of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the sound insulation component of the utility model;

[0018] Figure 4 This is a schematic diagram of the connection of the sealing strip of the utility model;

[0019] The reference numerals are as follows:

[0020] Vehicle body 1, high-voltage box 2, sound insulation component 3, waterproof layer 31, sound insulation board 32, sound-absorbing cotton 33, sealing strip 4, vibration-damping pad 5, connecting block 6, connecting bolt 7. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0023] In the description of the present application, it should be noted that if the terms "center", "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the product of the application is usually placed when in use. It is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, it should also be noted that unless otherwise clearly specified and limited, if the terms "set", "install", and "connect" appear, they should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0024] Example

[0025] like Figure 1-4 As shown, a sound insulation and noise reduction structure of a high-voltage box of an urban rail train comprises a car body 1 and a high-voltage box 2 arranged on the car body 1, a connecting block 6 is fixedly provided on the top of the car body 1, the high-voltage box 2 is fixed on the connecting block 6 by connecting bolts 7, the connecting block 6 is a square frame structure matching the high-voltage box 2, a vibration-damping pad 5 is provided between the top of the connecting block 6 and the high-voltage box 2, a sound insulation component 3 is provided between the bottom of the high-voltage box 2 and the car body 1, the bottom of the sound insulation component 3 is pasted on the top of the car body 1, and a sealing strip 4 is provided around the sound insulation component 3 and between the connecting block 6.

[0026] It is worth noting that the high-voltage box 2 is fixed on the top of the vehicle body 1 by the provided connecting block 6, the structural sound transmission in the vehicle compartment caused by the vibration of the high-voltage box 2 is controlled by the provided vibration-damping pad 5, the bottom noise of the high-voltage box 2 is reduced from the air path to the interior of the vehicle compartment by the provided sound insulation component 3, and the sound insulation component 3 is protected by the provided sealing strip 4. Specifically, the sealing strip 4, the bottom surface of the high-voltage box 2 and the top surface of the vehicle body 1 form a sealed space, which prevents external impurities, dust or other pollutants from entering the sound insulation component 3 to reduce the sound insulation and noise reduction effect of the sound insulation component 3.

[0027] In some feasible embodiments, the sound insulation component 3 includes a waterproof layer 31 and a noise reduction material, wherein the waterproof layer 31 is arranged on six sides of the noise reduction material, and the noise reduction material includes two sound insulation boards 32 and sound absorbing cotton 33, wherein the sound absorbing cotton 33 is arranged between the two sound insulation boards 32. The waterproof layer 31 protects the noise reduction material, and the noise reduction material realizes the function of sound insulation and noise reduction.

[0028] In some feasible embodiments, the sealing strip 4 is connected at the corners in a stepped overlapping manner, thereby improving the sealing of the connection.

[0029] In some feasible embodiments, the height of the sealing strip 4 is higher than the height of the connecting block 6. When the high-voltage box 2 is installed, tightening the connecting bolts 7 will cause the high-voltage box 2 to press the sealing strip 4, thereby improving the sealing effect of the sealing strip 4. At the same time, it can also reduce the impact force between the high-voltage box 2 and the vehicle body 1 and isolate vibration.

[0030] In addition, it should be understood that although this specification is described according to the implementation mode, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation modes that can be understood by those skilled in the art. So far, each embodiment of the present disclosure has been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here. The scope of the present disclosure is defined by the attached claims.

Claims

1. A sound insulation and noise reduction structure for a high-voltage box of an urban rail train, comprising a car body (1) and a high-voltage box (2) arranged on the car body (1), a connecting block (6) being fixedly arranged on the top of the car body (1), and the high-voltage box (2) being fixed on the connecting block (6) by connecting bolts (7), characterized in that: A vibration-damping pad (5) is provided between the top of the connecting block (6) and the high-voltage box (2), a sound insulation component (3) is provided between the bottom of the high-voltage box (2) and the vehicle body (1), the bottom of the sound insulation component (3) is adhered to the top of the vehicle body (1), and a sealing strip (4) is provided around the sound insulation component (3) and between the connecting block (6).

2. The sound insulation and noise reduction structure of a high-voltage box of an urban rail train according to claim 1 is characterized in that: The sound insulation component (3) comprises a waterproof layer (31) and a noise reduction material, wherein the waterproof layer (31) is arranged on six sides of the noise reduction material.

3. The sound insulation and noise reduction structure of a high-voltage box of an urban rail train according to claim 2 is characterized in that: The noise reduction material comprises two sound insulation boards (32) and sound absorbing cotton (33), and the sound absorbing cotton (33) is arranged between the two sound insulation boards (32).

4. The sound insulation and noise reduction structure of a high-voltage box of an urban rail train according to claim 1 is characterized in that: The sealing strip (4) is connected at the corners in a stepped overlapping manner.

5. The sound insulation and noise reduction structure of a high-voltage box of an urban rail train according to claim 1 is characterized in that: The height of the sealing strip (4) is higher than the height of the connecting block (6).

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