CN218624464U

CN218624464U - Noise-reduction air inlet transfer box

Info

Publication number: CN218624464U
Application number: CN202221446305.1U
Authority: CN
Inventors: 祝玉元; 何进; 范璐
Original assignee: Xiamen Best Technology Co ltd
Current assignee: Xiamen Best Technology Co ltd
Priority date: 2022-06-10
Filing date: 2022-06-10
Publication date: 2023-03-14
Anticipated expiration: 2032-06-10

Abstract

The utility model discloses an it makes an uproar to fall inlet transfer case relates to passenger train inlet transfer case technical field, exists abnormal sound and resonance after being connected for solving current inlet transfer case and passenger train, and inside is because noise and reverberation that the air current arouses, the too big problem of air inlet department noise. A box body is arranged outside the noise-reducing air inlet transfer box body, and an air inlet is formed in one end of the box body; further comprising: the first silencing partition plate is arranged at a position 92MM away from the bottom of the box body, and the size width of the first silencing partition plate is completely attached to the box body; the second silencing partition plate is arranged in the box body and close to the air inlet, and the size and width of the second silencing partition plate are completely attached to the box body; EPDM shock pad, it sets up around the box is inside, and its thickness is 2MM.

Description

Noise-reduction air inlet transfer box

Technical Field

The utility model relates to a passenger train inlet transfer case technical field specifically is an inlet transfer case of making an uproar falls.

Background

In addition, the internal structure of the air inlet transfer box is simple, only one inclined iron plate is used for reducing air reverberation when air is introduced, the structural design has weak contribution effect on the noise at the air inlet transfer box, and the noise reduction result is difficult to achieve;

as in application No.: CN201821660810.X entitled "an air inlet adapter box with noise reduction function" comprises a box body and a water baffle fixed in the box body; the box body comprises a front panel, a rear panel, a left panel, a right panel, a top plate and a bottom plate, wherein the front panel, the rear panel, the left panel and the right panel are sequentially connected and enclose a hollow box body; the bottom plate is provided with a water outlet; the front panel is provided with an air inlet, the rear panel is provided with an air outlet, and an arc-shaped transition plate is arranged at the joint of the left panel and the rear panel. The utility model provides an inlet air transfer box to the rational design of size, thickness, weight to increase the arc and cross the cab apron, when guaranteeing rigidity, carry out lightweight design to inlet air transfer box. The harmonic frequency of the engine is avoided, the occurrence of resonance phenomenon is reduced, the air inlet noise of the vehicle type is reduced, and the comfort of passengers is improved.

However, after the existing air inlet transfer box is connected with a passenger car, abnormal sound and resonance exist, noise and reverberation caused by airflow inside the air inlet transfer box are excessive; therefore, the existing requirements are not met, and a noise reduction air inlet adapter box is provided for the requirement.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a make an uproar inlet transfer case falls to there are abnormal sound and resonance after the current inlet transfer case that proposes is connected with the passenger train in solving above-mentioned background art, inside because noise and reverberation that the air current arouses, the too big problem of air inlet department noise.

In order to achieve the above object, the utility model provides a following technical scheme: a noise reducing air intake transfer box comprising: the noise-reducing air inlet transfer box comprises a noise-reducing air inlet transfer box body, wherein a box body is arranged outside the noise-reducing air inlet transfer box body, an air inlet is formed in one end of the box body, and an air channel is formed in the box body;

further comprising:

the first silencing partition plate is arranged at a position 92MM away from the bottom of the box body, and the size width of the first silencing partition plate is completely attached to the box body;

the second silencing partition plate is arranged in the box body and close to the air inlet, and the size and the width of the second silencing partition plate are completely attached to the box body;

EPDM shock absorption pad, it sets up around the box is inside, and its thickness is 2MM.

Preferably, the thickness of the first silencing partition plate and the second silencing partition plate is 2MM, and the length of the first silencing partition plate and the length of the second silencing partition plate are 360MM.

Preferably, the outer wall of the EPDM shock absorption pad is provided with a noise reduction sponge interlayer.

Preferably, the outer wall of the noise reduction sponge interlayer is provided with a polyethylene sound insulation plate.

Preferably, the outer wall of the box body is provided with an outer stainless steel layer.

Preferably, the other end of the box body is provided with a connecting end, and a switching port is arranged below the box body.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses a set up the vibration sound that EPDM bradyseism pad produced when can effectively alleviate high wind and pass through the box, set up the noise that first amortization baffle can effective separation 3-5dB, set up the noise that second amortization baffle can effective separation 8-10dB, this method is through optimizing the switching box inner structure of making an uproar that falls in order to reach the purpose of making an uproar, matches corresponding sound-insulating sound-absorbing material again, can improve the noise reduction effect, and does not influence engine internal environment operating condition hardly.

2. The sponge intermediate layer of making an uproar has reduced the syllable-dividing noise reduction effect of intermediate layer department, and the polyethylene acoustic celotex board has further improved the interior sound insulation effect of incasement.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the internal structure of the case of the present invention;

FIG. 3 is a schematic view of the partial structure of the EPDM cushion of the present invention;

in the figure: 1. the noise-reducing air inlet transfer box body; 2. a box body; 3. a connecting end; 4. a switching port; 5. a first sound-deadening partition plate; 6. a second sound-deadening partition plate; 7. an air inlet; 8. a gas channel; 9. an EPDM cushioning pad; 10. a noise reduction sponge interlayer; 11. polyethylene acoustical panels; 12. an outer stainless steel layer.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-3, the present invention provides an embodiment: a noise reducing air intake transfer box comprising: the noise-reduction air inlet transfer box comprises a noise-reduction air inlet transfer box body 1, wherein a box body 2 is arranged outside the noise-reduction air inlet transfer box body 1, an air inlet 7 is formed in one end of the box body 2, and an air channel 8 is formed inside the box body 2;

further comprising:

a first silencing partition 5, which is arranged at a position 92MM away from the bottom of the box body 2 and has a size width completely fitting with the box body 2;

the second silencing partition plate 6 is arranged in the box body 2 at a position close to the air inlet 7, and the size and width of the second silencing partition plate are completely attached to the box body 2;

and the EPDM shock absorption pad 9 is arranged on the periphery inside the box body 2, and the thickness of the EPDM shock absorption pad is 2MM.

Referring to fig. 1 and 2, the thicknesses of the first silencing partition plate 5 and the second silencing partition plate 6 are 2MM, the lengths of the first silencing partition plate 5 and the second silencing partition plate 6 are 360MM, and both the first silencing partition plate 5 and the second silencing partition plate 6 have silencing and noise reducing effects.

Referring to fig. 3, the outer wall of the epdm cushioning pad 9 is provided with a noise reduction sponge interlayer 10, and the noise reduction sponge interlayer 10 improves the sound insulation and noise reduction effects at the interlayer.

Referring to fig. 3, the outer wall of the noise reduction sponge interlayer 10 is provided with a polyethylene sound insulation board 11, and the polyethylene sound insulation board 11 further improves the sound insulation effect in the box.

Referring to fig. 3, an outer stainless steel layer 12 is disposed on the outer wall of the box body 2, and the outer stainless steel layer 12 has an external protection effect.

Referring to fig. 1 and 2, a connecting end 3 is disposed at the other end of the box body 2, and a switching port 4 is disposed below the box body 2, wherein the switching port 4 achieves the effect of switching with other components.

The working principle is as follows: during the use, through setting up the vibration sound that EPDM bradyseism pad 9 produced when can effectively alleviate high wind and pass through box 2, set up the noise that first amortization baffle 5 can effective separation 3-5dB, set up the noise that second amortization baffle 6 can effective separation 8-10dB, this method falls the switching box inner structure of making an uproar through optimizing and falls the purpose of making an uproar, match corresponding syllable-dividing sound absorbing material again, can improve the noise reduction effect, and do not influence engine internal environment operating condition hardly, fall the sponge intermediate layer 10 of making an uproar and improve the syllable-dividing noise reduction effect of intermediate layer department, polyethylene acoustic celotex board 11 has further improved the incasement sound insulation effect.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. A noise-reducing air inlet transfer box comprises a noise-reducing air inlet transfer box body (1), wherein a box body (2) is arranged outside the noise-reducing air inlet transfer box body (1), an air inlet (7) is formed in one end of the box body (2), and an air channel (8) is formed in the box body (2);

the method is characterized in that: further comprising:

the first silencing partition plate (5) is arranged at a position 92MM away from the bottom of the box body (2) and is completely attached to the box body (2) in size and width;

the second silencing partition plate (6) is arranged in the box body (2) and close to the air inlet (7), and the size width of the second silencing partition plate is completely attached to the box body (2);

the EPDM shock absorption pad (9) is arranged on the periphery of the inside of the box body (2), and the thickness of the EPDM shock absorption pad is 2MM.

2. A noise reducing air intake adaptor box as claimed in claim 1, wherein: the thickness of the first silencing partition plate (5) and the second silencing partition plate (6) is 2MM, and the length of the first silencing partition plate (5) and the length of the second silencing partition plate (6) are 360MM.

3. A noise reducing air intake adaptor box as claimed in claim 1, wherein: the outer wall of the EPDM shock absorption pad (9) is provided with a noise reduction sponge interlayer (10).

4. A noise reducing air inlet transition box according to claim 3, wherein: the outer wall of the noise reduction sponge interlayer (10) is provided with a polyethylene sound insulation board (11).

5. The noise reducing air intake adaptor box of claim 4, wherein: the outer wall of the box body (2) is provided with an outer stainless steel layer (12).

6. A noise reducing air intake adaptor box as claimed in claim 1, wherein: the other end of the box body (2) is provided with a connecting end (3), and a switching port (4) is arranged below the box body (2).