Sound insulation and noise reduction device for urban rail vehicle

Abstract

The utility model discloses an urban rail vehicle sound insulation and noise reduction device, which relates to the technical field of sound insulation and noise reduction devices and comprises a base, an urban rail vehicle air conditioner compressor unit is fixed at the top end of the base, and a sound insulation protective cover is embedded and inserted at the top end of the base; the sound insulation protective cover is embedded and inserted in the top end of the base, the sound insulation protective cover is positioned and fixed through the positioning and clamping mechanism at the top end of the base, and the sound insulation protective cover can be conveniently disassembled and assembled on the base due to the arrangement of the positioning and clamping mechanism; the exhaust fans are arranged in the ventilation boxes on the outer walls of the left side and the right side of the base, and the L-shaped air channels communicating with the ventilation boxes and the sound insulation protective cover are formed in the left side and the right side of the interior of the base; therefore, air circulation in the sound insulation protective cover can be accelerated by starting the exhaust fan, and then the heat dissipation efficiency of the air conditioner compressor unit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sound insulation and noise reduction devices, in particular to a sound insulation and noise reduction device for urban rail vehicles. Background Art

[0002] With the improvement of living standards, in order to alleviate the increasing congestion and traffic conditions and protect the environment, rail trains have emerged as a new type of environmentally friendly and low-cost means of transportation. Urban rail vehicles are specially designed for public transportation in urban areas. They run on dedicated tracks and their main function is to transport passengers. These vehicles are usually powered by electricity and use wheel-rail operation to provide fast and large-volume public transportation services. The air-conditioning compressors on urban rail vehicles will inevitably generate noise during operation. In order to reduce the noise, they need to be equipped with corresponding sound insulation and noise reduction devices.

[0003] For example, the utility model patent with application number 202322492839.9 discloses a noise reduction device for a rail vehicle air-conditioning unit. The noise reduction device is tubular as a whole, one end of which is connected to the air outlet of the fan, and the other end is connected to the air outlet of the air-conditioning unit casing. The noise reduction device is an inclined tubular structure from the air outlet of the fan to the air outlet of the air-conditioning unit casing. The tubular structure is three inclined plates fixed between two flat plates, and the two sides of the first inclined plate are fixed between the two flat plates.

[0004] Based on the findings in the prior art, most of the existing sound insulation and noise reduction devices for urban rail vehicles have a simple structure and are generally installed on the outside of the compressor unit by bolts, which makes it impossible to disassemble and assemble them conveniently, making it inconvenient to perform regular maintenance and inspection on the air-conditioning compressor unit of the urban rail vehicle. It is inconvenient to use, and while performing sound insulation and noise reduction protection on the compressor unit, it will affect the normal heat dissipation of the compressor unit, which can easily affect the normal operation of the compressor unit. The practicality is not high. Therefore, the utility model proposes a sound insulation and noise reduction device for urban rail vehicles to solve the problems existing in the prior art. Utility Model Content

[0005] In view of the above problems, the purpose of the utility model is to propose a sound insulation and noise reduction device for urban rail vehicles, so as to solve the problems that the existing sound insulation and noise reduction devices for urban rail vehicles cannot be conveniently disassembled and assembled, making it inconvenient to carry out regular maintenance and repair of the air-conditioning compressor units of urban rail vehicles, and that the sound insulation and noise reduction protection of the compressor unit will affect the normal heat dissipation of the compressor unit, thereby easily affecting the normal operation of the compressor unit.

[0006] In order to achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a sound insulation and noise reduction device for urban rail vehicles, including a base, an urban rail vehicle air-conditioning compressor unit is fixed on the top of the base, a sound insulation protective cover is inserted and connected to the top of the base, the sound insulation protective cover and the base are fixed by a positioning and clamping mechanism on the top of the base, the side walls and the top of the sound insulation protective cover are provided with inserting openings, a sound insulation and noise reduction component is inserting and fixed inside the inserting opening, ventilation boxes are fixed to the outer walls on both sides of the base, an exhaust fan is fixed inside the ventilation box, ventilation ports are provided on the side walls of the ventilation box, and L-shaped air ducts connecting the sound insulation protective cover and the ventilation box are provided on both sides of the base.

[0007] A further improvement is that a fitting frame is fixed to the bottom end of the sound insulation protective cover, a fitting slot adapted to the fitting frame is provided at the top end of the base, and the fitting slot is fitted into the fitting slot.

[0008] A further improvement is that the positioning clamping mechanism includes a fixing seat symmetrically fixed to the top of the base and an elastic latch sliding through the fixing seat, and a socket adapted to the elastic latch is provided on the outer side wall of the sound insulation protective cover.

[0009] A further improvement is that a spring sheet is fixedly sleeved on one side of the elastic pin located inside the fixing seat, a limit spring slidably sleeved on the outside of the elastic pin is fixed between the inner wall of the fixing seat away from the sound insulation protective cover and the spring sheet, and a pull ring is fixed on the end of the elastic pin away from the sound insulation protective cover.

[0010] A further improvement is that the sound insulation and noise reduction component includes a sound insulation cotton board embedded and fixed in the embedding opening and a sound absorption board fixed on both sides of the sound insulation cotton board, and the sound absorption board is evenly provided with sound absorption holes.

[0011] A further improvement is that a mounting groove is provided at the center of the top of the base, a temperature sensor is fixed in the mounting groove, and the temperature sensor is electrically connected to the exhaust fan.

[0012] A further improvement is that the L-shaped air ducts are evenly distributed on both sides of the base, the vents are evenly distributed on the side walls of the ventilation box, and a dust filter is fixed on one side of the vents close to the outside of the ventilation box.

[0013] The beneficial effects of the utility model are as follows: the utility model includes a base, and the sound insulation protective cover is inserted and engaged at the top of the base, and the sound insulation protective cover is positioned and fixed by a positioning and clamping mechanism at the top of the base. The setting of the positioning and clamping mechanism enables the sound insulation protective cover to be conveniently disassembled and assembled on the base, thereby facilitating the opening of the sound insulation protective cover and performing regular maintenance and inspection on the air-conditioning compressor unit of the urban rail vehicle. The utility model is easy to use, and an exhaust fan is arranged in the ventilation box on the outer walls on the left and right sides of the base, and an L-shaped air duct connecting the ventilation box and the sound insulation protective cover is opened on the left and right sides of the base, so that the air circulation inside the sound insulation protective cover can be accelerated by starting the exhaust fan, thereby improving the heat dissipation efficiency of the air-conditioning compressor unit, ensuring the normal operation of the air-conditioning compressor unit, and having high practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front view of the utility model;

[0015] Figure 2 It is a front sectional view of the utility model;

[0016] Figure 3 The utility model Figure 2 Enlarged view of point A in .

[0017] Among them: 1. Base; 2. Sound insulation protective cover; 3. Fitting opening; 4. Sound insulation and noise reduction component; 5. Ventilation box; 6. Exhaust fan; 7. Ventilation port; 8. L-shaped air duct; 9. Fitting frame; 10. Fitting slot; 11. Fixed seat; 12. Elastic latch; 13. Socket; 14. Spring sheet; 15. Limit spring; 16. Installation slot; 17. Temperature sensor; 18. Dust filter; 401. Sound insulation cotton board; 402. Sound absorbing board. DETAILED DESCRIPTION

[0018] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with an embodiment. The embodiment is only used to explain the present invention and does not constitute a limitation on the protection scope of the present invention.

[0019] according to Figure 1 , Figure 2 , Figure 3As shown, this embodiment provides a sound insulation and noise reduction device for urban rail vehicles, including a base 1 fixed to the urban rail vehicle by bolts and a sound insulation protective cover 2 inserted and engaged with the top of the base 1, the air conditioning compressor unit of the urban rail vehicle is fixed to the top of the base 1 by bolts and is located inside the sound insulation protective cover 2, the base 1 and the sound insulation protective cover 2 are both square in design, and the four positions of the front, back, left, and right sides of the top of the base 1 are fixed with positioning and clamping mechanisms for positioning and fixing the sound insulation protective cover 2, the sound insulation protective cover 2 is inserted and engaged with the top of the base 1, and the sound insulation protective cover 2 is positioned and fixed by the positioning and clamping mechanism at the top of the base 1, and the positioning and clamping mechanism is set, so that the sound insulation protective cover 2 can be conveniently disassembled and assembled on the base 1, so as to facilitate opening the sound insulation protective cover 2 and performing regular maintenance and inspection on the air conditioning compressor unit of the urban rail vehicle;

[0020] The soundproof protective cover 2 is provided with square interlocking openings 3 on the four sides and the top, and a soundproof and noise reduction component 4 for soundproofing and noise reduction is interlocked and fixed inside the interlocking openings 3. Hollow ventilation boxes 5 are fixed to the outer walls on the left and right sides of the base 1 by bolts, and exhaust fans 6 are fixed to the inside of the two sets of ventilation boxes 5 by screws, and both sets of exhaust fans 6 exhaust air from left to right. Ventilation holes 7 are provided on the side walls of the ventilation boxes 5 away from the base 1, and L-shaped air ducts 8 are provided on the left and right sides of the base 1, and the soundproof protective cover 2 and the ventilation box 5 are connected through the L-shaped air duct 8. The zigzag design of the L-shaped air duct 8 can avoid noise transmission therefrom to the greatest extent compared with the straight line design. By arranging the exhaust fans 6 in the ventilation boxes 5 on the left and right outer walls of the base 1, and opening the L-shaped air duct 8 connecting the ventilation boxes 5 and the soundproof protective cover 2 on the left and right sides of the base 1, the air circulation inside the soundproof protective cover 2 can be accelerated by starting the exhaust fans 6, thereby improving the heat dissipation efficiency of the air-conditioning compressor unit therein.

[0021] A U-shaped interlocking frame 9 is welded and fixed at the bottom end of the sound insulation protective cover 2, and an interlocking slot 10 is opened at the top of the base 1, and the interlocking slot 10 is adapted to the interlocking frame 9. When the sound insulation protective cover 2 is fixed to the top of the base 1, the interlocking frame 9 is interlocked and plugged into the interlocking slot 10, thereby realizing the interlocking plug-in of the sound insulation protective cover 2 at the top of the base 1 and avoiding lateral displacement of the sound insulation protective cover 2.

[0022] The positioning and clamping mechanism includes a fixing seat 11 and an elastic pin 12, wherein the fixing seat 11 is provided with four groups and is symmetrically fixed to the front, back, left and right sides of the top of the base 1 by screws, and the elastic pin 12 slides through the fixing seat 11, and the lower part of the outer wall around the sound insulation protective cover 2 is provided with a plug hole 13, and the plug hole 13 is adapted to the elastic pin 12, and the sound insulation protective cover 2 is positioned and clamped by inserting the elastic pin 12 into the plug hole 13, and the positioning and clamping can be released by pulling the elastic pin 12 out of the plug hole 13, which is convenient and easy.

[0023] A spring sheet 14 is fixedly sleeved on one side of the elastic latch 12 located inside the fixing seat 11, and a limit spring 15 is fixed on the inner wall of the fixing seat 11 away from the sound insulation protective cover 2 and is slidably sleeved on the outside of the elastic latch 12, and the other end of the limit spring 15 is fixedly connected to the spring sheet 14. The limit spring 15 provides elastic force for the spring sheet 14, so that the elastic latch 12 has an automatic rebound and reset function, and a pull ring is welded and fixed on the end of the elastic latch 12 away from the sound insulation protective cover 2, which is convenient for the user to pull the elastic latch 12 to move.

[0024] The sound insulation and noise reduction component 4 includes a sound insulation cotton board 401 and a sound absorbing board 402, wherein the sound insulation cotton board 401 is embedded and fixed on the inner side of the embedding opening 3, and the sound absorbing board 402 is provided with two groups and respectively fixed on both sides of the sound insulation cotton board 401, and the sound absorbing board 402 is provided with evenly distributed sound absorbing holes. The sound insulation cotton board 401 and the sound absorbing board 402 are combined to form the sound insulation and noise reduction component 4 to soundproof and reduce the noise of the air-conditioning compressor unit, which has a better effect than the traditional single use of the sound insulation cotton board 401 or the sound absorbing board 402.

[0025] An installation groove 16 is provided at the center position of the top of the base 1, and a temperature sensor 17 for detecting the internal temperature of the sound insulation protective cover 2 is fixed to the inside of the installation groove 16 by bolts. The temperature sensor 17 is connected to the PLC control system of the device and is used to start the exhaust fan 6 when it is detected that the internal temperature of the sound insulation protective cover 2 exceeds a preset value.

[0026] The L-shaped air ducts 8 are evenly distributed on the left and right sides of the base 1. Multiple groups of L-shaped air ducts 8 increase the air circulation rate in the sound insulation protective cover 2. The vents 7 are also evenly distributed on the side walls of the ventilation box 5 to increase the circulation rate of the air inside the ventilation box 5 and the outside air. A dust filter 18 is fixed by screws on one side of the vents 7 close to the outside of the ventilation box 5 to filter and intercept external dust.

[0027] When the urban rail vehicle sound insulation and noise reduction device is actually used, the base 1 is fixed to the corresponding position of the urban rail vehicle by bolts, the air-conditioning compressor unit is fixed to the top of the base 1 by bolts, the sound insulation protective cover 2 is inserted into the top of the base 1 and covers the outside of the air-conditioning compressor unit, and is fixed to the top of the base 1 by a positioning clamping mechanism (both the base 1 and the sound insulation protective cover 2 are reserved with holes and grooves for the air-conditioning compressor unit pipeline to pass through). When the air-conditioning compressor unit is working, the sound insulation and noise reduction components 4 on the side walls and the top of the sound insulation protective cover 2 are used to The group performs sound insulation and noise reduction. At the same time, when the temperature sensor 17 detects that the temperature inside the soundproof protective cover 2 is too high, the PLC control system of the device starts the exhaust fans 6 in the ventilation boxes 5 on the left and right sides, wherein the exhaust fan 6 on the left side draws the outside air into the ventilation box 5 and injects it into the soundproof protective cover 2 through the left L-shaped air duct 8, and the exhaust fan 6 on the right side draws the air in the soundproof protective cover 2 out of the right L-shaped air duct 8, so as to accelerate the air circulation in the soundproof protective cover 2 and take away the heat therein, thereby improving the heat dissipation efficiency of the air conditioning compressor unit and avoiding overheating of the air conditioning compressor unit;

[0028] When it is necessary to disassemble the sound insulation protective cover 2 in order to maintain and repair the air-conditioning compressor unit on the top of the base 1, first use the positioning card mechanism to release the positioning and fixation of the sound insulation protective cover 2, and then directly remove the sound insulation protective cover 2 from the base 1 to complete the disassembly. At this time, the air-conditioning compressor unit can be maintained and repaired accordingly.

[0029] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A sound insulation and noise reduction device for urban rail vehicles, comprising a base (1), characterized in that: An urban rail vehicle air conditioning compressor unit is fixed to the top of the base (1); a soundproof protective cover (2) is inserted and inserted into the top of the base (1); the soundproof protective cover (2) and the base (1) are fixed via a positioning and clamping mechanism at the top of the base (1); a fitting opening (3) is provided on the side wall and the top of the soundproof protective cover (2); a soundproof and noise reduction component (4) is fitted and fixed inside the fitting opening (3); ventilation boxes (5) are fixed to the outer walls on both sides of the base (1); an exhaust fan (6) is fixed inside the ventilation box (5); a ventilation port (7) is provided on the side wall of the ventilation box (5); and L-shaped air ducts (8) are provided on both sides of the base (1) to connect the soundproof protective cover (2) and the ventilation box (5).

2. The urban rail vehicle sound insulation and noise reduction device according to claim 1, characterized in that: A chimeric insertion frame (9) is fixed at the bottom end of the sound insulation protective cover (2), and a chimeric insertion slot (10) adapted to the chimeric insertion frame (9) is provided at the top end of the base (1), and the chimeric insertion frame (9) is chimerically inserted into the chimeric insertion slot (10).

3. The urban rail vehicle sound insulation and noise reduction device according to claim 1, characterized in that: The positioning clamping mechanism comprises a fixing seat (11) symmetrically fixed to the top of the base (1) and an elastic plug (12) slidingly passing through the fixing seat (11); and a plug hole (13) adapted to the elastic plug (12) is provided on the outer wall of the sound insulation protective cover (2).

4. The urban rail vehicle sound insulation and noise reduction device according to claim 3, characterized in that: A spring sheet (14) is fixedly sleeved on one side of the elastic latch (12) located inside the fixing seat (11), a limit spring (15) is fixed between the inner wall of the fixing seat (11) on the side away from the sound insulation protective cover (2) and the spring sheet (14), and a pull ring is fixed on one end of the elastic latch (12) away from the sound insulation protective cover (2).

5. The urban rail vehicle sound insulation and noise reduction device according to claim 1, characterized in that: The sound insulation and noise reduction component (4) comprises a sound insulation cotton board (401) embedded and fixed in the embedding opening (3) and a sound absorption board (402) fixed on both sides of the sound insulation cotton board (401), and the sound absorption board (402) is evenly provided with sound absorption holes.

6. The urban rail vehicle sound insulation and noise reduction device according to claim 1, characterized in that: A mounting groove (16) is provided at the center of the top of the base (1), a temperature sensor (17) is fixed in the mounting groove (16), and the temperature sensor (17) is electrically connected to the exhaust fan (6).

7. The urban rail vehicle sound insulation and noise reduction device according to claim 1, characterized in that: The L-shaped air ducts (8) are evenly distributed on both sides of the base (1), the ventilation openings (7) are evenly distributed on the side walls of the ventilation box (5), and a dust filter (18) is fixed on one side of the ventilation openings (7) close to the outside of the ventilation box (5).

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