Ventilator test noise reduction device

Abstract

The utility model belongs to the technical field of motor train unit test equipment, and discloses a ventilator test noise reduction device, comprising a fixed skeleton configured to define an operation room; the sliding framework is slidably connected to the fixed framework, and the sliding framework and the fixed framework define a noise reduction room; the fixed end of the driving mechanism is fixedly arranged on the fixed framework, the output end of the driving mechanism is fixedly arranged on the sliding framework, and the driving mechanism can drive the sliding framework to get close to and get away from the fixed framework in the horizontal direction. The fixed framework and the sliding framework are matched with each other to define the noise reduction room, a technician can perform test operation in the operation room, and the physical and psychological health of the technician is prevented from being damaged by noise generated in the test process; and the driving mechanism can drive the sliding framework to get close to and get away from the fixed framework in the horizontal direction, the size of the noise reduction room can be adjusted according to test requirements, universality is high, the structure is simple, and damage is not prone to occurring.

Description

Technical Field

[0001] This utility model relates to the technical field of EMU testing equipment, and in particular to a noise reduction device for ventilation fan testing. Background Technology

[0002] Currently, when overhauling ventilation fans for traction motors of high-speed trains, the entire unit is typically tested in a separate room, with parameters such as airflow measured. The common practice is to use a forklift to transport the entire ventilation fan to the testing room, where the experiment is then conducted, with the control panel and testing equipment located in the same room.

[0003] The main disadvantages of the above method are: the transfer efficiency is too low, forklifts must be used for transfer, and the noise from the operating table and the test equipment being in the same room is high, which is not conducive to the occupational physical and mental health of the operators. Utility Model Content

[0004] The purpose of this invention is to provide a noise reduction device for ventilation fan testing, which can effectively protect the physical and mental health of operators.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A noise reduction device for testing ventilation fans, including:

[0007] A fixed frame is configured to enclose an operating room;

[0008] A sliding frame is slidably connected to the fixed frame, and the sliding frame and the fixed frame enclose a noise reduction space;

[0009] The driving mechanism has a fixed end fixedly mounted on the fixed frame and an output end fixedly mounted on the sliding frame. The driving mechanism can drive the sliding frame to move closer to and further away from the fixed frame in the horizontal direction.

[0010] Preferably, it also includes a transmission assembly, the transmission assembly comprising:

[0011] The first transmission seat is fixedly mounted on the fixed frame;

[0012] The second transmission seat is fixedly mounted on the sliding frame;

[0013] The drive shaft has one end passing through the first drive seat and fixedly connected to the output end of the drive mechanism, and the other end connected to the second drive seat.

[0014] Preferably, an adapter nut is fixedly provided on the second transmission seat, and the transmission shaft is screwed to the adapter nut. When the transmission shaft rotates around its own axis, the second transmission seat can move closer to or further away from the first transmission seat.

[0015] Preferably, the bottom of the sliding frame is provided with running wheels.

[0016] Preferably, the system also includes a guide rail structure, wherein the traveling wheels abut against the guide rail structure and are capable of moving along the extension direction of the guide rail structure.

[0017] Preferably, the fixed frame is provided with a horizontally extending groove, and the sliding frame is provided with a slider that extends into and presses against the inner wall of the groove.

[0018] Preferably, the sliding frame is provided with an opening and closing door structure.

[0019] Preferably, the inner periphery of the noise reduction chamber is provided with sound insulation material.

[0020] Preferably, an observation window is provided on the side wall of the noise reduction room, and soundproof glass is provided at the opening of the observation window.

[0021] Preferably, the noise reduction chamber is provided with a sound-insulating strip, which is configured to seal the gap between the sliding frame and the fixed frame.

[0022] The beneficial effects of this utility model are:

[0023] The fixed frame and the sliding frame work together to form a noise reduction chamber, allowing technicians to conduct experiments inside the chamber without the noise generated during the experiment harming their physical and mental health. Furthermore, the drive mechanism can move the sliding frame closer to and further away from the fixed frame in the horizontal direction, and the size of the noise reduction chamber can be adjusted according to the experimental requirements. It is highly versatile, has a simple structure, and is not easily damaged. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the ventilation fan testing noise reduction device of this utility model in one orientation;

[0025] Figure 2 This is a schematic diagram of the ventilation fan testing noise reduction device of this utility model from another orientation;

[0026] Figure 3 yes Figure 1 A magnified view of a section at point A in the middle;

[0027] Figure 4 yes Figure 2 A magnified view of a section at point B in the middle.

[0028] In the picture:

[0029] 1. Fixed frame; 11. Slide groove;

[0030] 2. Sliding frame; 21. Opening and closing door structure;

[0031] 3. Drive mechanism;

[0032] 4. Transmission assembly; 41. First transmission seat; 42. Second transmission seat; 421. Adapter nut; 43. Transmission shaft;

[0033] 5. Guide rail structure. Detailed Implementation

[0034] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar parts or parts having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0035] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection or a detachable connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0036] In the description of this utility model, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0037] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0038] like Figures 1-4As shown, this utility model provides a noise reduction device for testing ventilation fans, used for various tests of ventilation fans in high-speed trains. The device includes a fixed frame 1, a sliding frame 2, and a drive mechanism 3. The fixed frame 1 is configured to enclose an operating room; the sliding frame 2 is slidably connected to the fixed frame 1, and the sliding frame 2 and the fixed frame 1 enclose a noise reduction room; the fixed end of the drive mechanism 3 is fixedly mounted on the fixed frame 1, and the output end is fixedly mounted on the sliding frame 2. The drive mechanism 3 can drive the sliding frame 2 to move horizontally closer to and further away from the fixed frame 1.

[0039] The fixed frame 1 and the sliding frame 2 work together to form a noise reduction chamber, allowing technicians to conduct experiments inside the chamber and preventing noise generated during the experiment from harming their physical and mental health. Furthermore, the drive mechanism 3 can drive the sliding frame 2 to move closer to and further away from the fixed frame 1 in the horizontal direction. The size of the noise reduction chamber can be adjusted according to the experimental requirements. It is highly versatile, has a simple structure, and is not easily damaged.

[0040] It is understandable that the fixed frame 1 and the sliding frame 2 are commonly used steel structures in this field, and will not be described in detail here.

[0041] For example, in this embodiment, the inner periphery of the noise reduction room is provided with commonly used sound insulation materials (such as sound insulation boards or sound insulation cotton). The provision of the above-mentioned sound insulation materials can improve the sound insulation effect of the noise reduction room.

[0042] Specifically, an observation window is provided on the side wall of the noise reduction room, and soundproof glass is installed at the opening of the observation window. The above configuration can ensure the sound insulation effect while also facilitating external observation of the noise reduction room.

[0043] For example, in this embodiment, the soundproof glass is made of double-layered 8mm thick tempered glass, which is a common existing technology in the field, and its specific structure will not be described in detail here.

[0044] Specifically, sound-insulating strips are installed in the noise reduction chamber, and these strips are configured to seal the gap between the sliding frame 2 and the fixed frame 1. The aforementioned sound-insulating strips prevent noise from being conducted into the operating chamber through a solid medium. Sound-insulating strips are a common existing technology in this field, and their specific structure and principle will not be elaborated here.

[0045] Specifically, the noise reduction device for the ventilator test also includes a transmission assembly 4, which comprises a first transmission seat 41, a second transmission seat 42, and a transmission shaft 43. The first transmission seat 41 is fixedly mounted on the fixed frame 1; the second transmission seat 42 is fixedly mounted on the sliding frame 2; one end of the transmission shaft 43 passes through the first transmission seat 41 and is fixedly connected to the output end of the drive mechanism 3, and the other end is connected to the second transmission seat 42. The transmission assembly 4 allows the second transmission seat 42 to drive the sliding frame 2 to move along the length of the transmission shaft 43, thereby increasing the movable range of the sliding frame 2.

[0046] More specifically, a connecting nut 421 is fixedly installed on the second transmission seat 42, and the transmission shaft 43 is screwed to the connecting nut 421. When the transmission shaft 43 rotates around its own axis, the second transmission seat 42 can move closer to or away from the first transmission seat 41. The aforementioned connecting nut 421 means that simply driving the transmission shaft 43 to rotate around its own axis is enough to move the second transmission seat 42 closer to or away from the first transmission seat 41, resulting in high stability, strong durability, and a structure that is not easily damaged.

[0047] In other embodiments, the drive mechanism 3 can also be a linear drive motor commonly used in the art. In this case, the transmission shaft 43 is adjusted to be fixedly connected to the second transmission seat 42, which also enables the drive mechanism 3 to drive the sliding frame 2 to move closer to and away from the fixed frame 1 in the horizontal direction.

[0048] Specifically, the bottom of the sliding frame 2 is equipped with running wheels. The running wheels can convert the sliding friction between the sliding frame 2 and the ground into rolling friction, making the movement of the sliding frame 2 smoother.

[0049] More specifically, the noise reduction device for the ventilator test also includes a guide rail structure 5, with the traveling wheels abutting against the guide rail structure 5 and capable of moving along the extension direction of the guide rail structure 5. The aforementioned guide rail structure 5 improves the stability of the traveling wheels during rolling.

[0050] Specifically, the fixed frame 1 is fixedly provided with a horizontally extending groove 11, and the sliding frame 2 is provided with a slider that extends into and presses against the inner wall of the groove 11. The above arrangement can further improve the stability of the sliding frame 2 during movement and reduce the friction between the sliding frame 2 and the fixed frame 1.

[0051] Specifically, the sliding frame 2 is provided with an opening and closing door structure 21. The aforementioned opening and closing door structure 21 facilitates the entry of the entire large ventilation fan into the soundproof room.

[0052] For example, in this embodiment, the door structure 21 is suspended, and its driving method can be synchronous belt or chain to realize the control of door opening and closing.

[0053] For example, in this embodiment, the opening and closing door structure 21 is provided with sound insulation materials and sealing strips commonly used in the art to further improve its sound insulation effect when it is closed.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A noise reduction device for fan testing, characterized in that, The utility model relates to a noise reduction room, comprising: a fixed framework (1) configured to surround an operation room; a sliding framework (2) slidingly connected to the fixed framework (1), the sliding framework (2) and the fixed framework (1) surround a noise reduction room; a drive mechanism (3) having a fixed end fixedly arranged on the fixed framework (1) and an output end fixedly arranged on the sliding framework (2), the drive mechanism (3) being capable of driving the sliding framework (2) to move closer to or away from the fixed framework (1) in a horizontal direction.

2. The ventilator test noise reduction apparatus of claim 1, wherein, Further comprising a transmission assembly (4), the transmission assembly (4) comprising: a first transmission seat (41) fixedly arranged on the fixed framework (1); a second transmission seat (42) fixedly arranged on the sliding framework (2); a transmission shaft (43) having one end penetrating through the first transmission seat (41) and being fixedly connected to the output end of the drive mechanism (3) and the other end being connected to the second transmission seat (42).

3. The fan test noise reduction apparatus of claim 2, wherein, The second transmission seat (42) is fixedly provided with an adapter nut (421), the transmission shaft (43) is screwed to the adapter nut (421), and when the transmission shaft (43) rotates around its own axis, the second transmission seat (42) can move closer to or away from the first transmission seat (41).

4. The fan test noise reduction apparatus of claim 1, wherein, The sliding framework (2) is provided with running wheels at the bottom.

5. The fan test noise reduction apparatus of claim 4, wherein, Further comprising a guide rail structure (5), the running wheels abut against the guide rail structure (5) and can move along the extension direction of the guide rail structure (5).

6. The noise reduction device for testing a ventilator according to any one of claims 1-5, wherein, The fixed framework (1) is fixedly provided with a sliding groove (11) extending in a horizontal direction, the sliding framework (2) is provided with a sliding block, and the sliding block extends into and abuts against the inner wall of the sliding groove (11).

7. The noise reduction device for testing a ventilator according to any one of claims 1-5, wherein The sliding framework (2) is provided with an opening and closing door structure (21).

8. The noise reduction device for testing a ventilator according to any one of claims 1-5, wherein, The inner periphery of the noise reduction room is provided with sound insulation material.

9. The noise reduction device for testing a ventilator according to any one of claims 1-5, wherein, An observation window is formed in the side wall of the noise reduction room, and sound insulation glass is arranged at the opening of the observation window.

10. The noise reduction device for testing a ventilator according to any one of claims 1-5, wherein, The noise reduction room is provided with a sound insulation rubber strip, and the sound insulation rubber strip is configured to block the gap between the sliding framework (2) and the fixed framework (1).

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