CN214507530U

CN214507530U - CVS box

Info

Publication number: CN214507530U
Application number: CN202120856020.4U
Authority: CN
Inventors: 徐青
Original assignee: Shanghai Alstom Communications Electric Co ltd
Current assignee: Shanghai Alstom Communications Electric Co ltd
Priority date: 2021-04-23
Filing date: 2021-04-23
Publication date: 2021-10-26
Anticipated expiration: 2031-04-23

Abstract

The application relates to a CVS box, including the box body that is used for installing CVS, the inside wall of box body is fixed with the side soundproof cotton board, the interior top surface of box body is fixed with the soundproof cotton board. This application is through setting up soundproof cotton board and side soundproof cotton board to carry out diversified noise separation to CVS, thereby the noise that significantly reduces propagates to box body outside, experiences in order to ensure people's taking.

Description

CVS box

Technical Field

The application relates to the field of box structures, in particular to a CVS box.

Background

The CVS is an auxiliary inverter, which is an important component of the motor train unit, which takes electrical energy directly or indirectly from the grid and supplies it to auxiliary equipment of the motor train unit at a stable voltage and a fixed frequency.

The CVS can generate large noise in the running process, and riding experience of people on the motor train unit is influenced to a certain extent.

SUMMERY OF THE UTILITY MODEL

In order to reduce noise, the present application provides a CVS case.

The application provides a CVS box adopts following technical scheme:

the utility model provides a CVS box, is including the box body that is used for installing CVS, the inside wall of box body is fixed with side soundproof cotton board, the interior top surface of box body is fixed with last soundproof cotton board.

Through adopting above-mentioned technical scheme, cross and set up soundproof cotton board and side soundproof cotton board, go up soundproof cotton board and side soundproof cotton board and have the effect of separation noise to carry out diversified separation to the noise that CVS produced, thereby the noise that CVS propagated to the box body outside that significantly reduces, in order to ensure people's the experience of taking.

Optionally, a plurality of bearing plates are fixed on the inner top surface of the box body, the bearing plates are located on the periphery of the upper soundproof cotton plate, and the bearing plates abut against the lower surface of the upper soundproof cotton plate.

Through adopting above-mentioned technical scheme, through the bearing of bearing board to last soundproof cotton board to ensure the rigidity of the relative box body of last soundproof cotton board, and can reduce the structural damage to last soundproof cotton board.

Optionally, the inside wall of box body is fixed with the mounting plate, the mounting plate laminate in the surface of keeping away from the box body inside wall of side soundproof cotton board.

Through adopting above-mentioned technical scheme, through the butt of mounting plate to side soundproof cotton board to ensure the rigidity of the relative box body of side soundproof cotton board.

Optionally, the fastening plate that corresponds side soundproof cotton board is established to at least two, just the fastening plate is along vertical direction dislocation set.

Through adopting above-mentioned technical scheme, the fastening plate of dislocation set can exert a great deal of butt force to the offside soundproof cotton board to improve the steadiness of side soundproof cotton board, play good limiting displacement, reduce cost with as few fastening plates as possible.

Optionally, a bending plate is fixed on the inner side wall of the box body, the bending plate is fixedly connected with the inner side wall of the box body, and the other end of the bending plate is integrally connected with the fastening plate; the edge of the side soundproof cotton plate is provided with an avoiding groove corresponding to the bending plate, and the bending plate is located in the avoiding groove.

By adopting the technical scheme, the fastening plate can be fixed in position through the arrangement of the bending plate; secondly, through the board of bending and the cooperation of dodging the groove, the board of bending can carry on spacingly to the position of offside soundproof cotton board, reduces the offset of side soundproof cotton board, and the setting of dodging the groove simultaneously is convenient for bend the installation between the inboard wall of board and box body again.

Optionally, the side soundproof cotton board keep away from the surface of the inside wall of box body caves in the shaping and has a plurality of toper sound-absorbing cavities, the inner wall in sound-absorbing cavity covers and is fixed with the stereoplasm taper ring.

Through adopting above-mentioned technical scheme, when the produced noise of CVS entered into to inhaling the sound intracavity, the sound wave can contact and reflect with the inner wall of stereoplasm awl ring, and the sound wave mutual interference of a plurality of reflections, consumed the acoustic energy to play the effect of inhaling the sound, especially the eliminating effect of centering low frequency noise is better, and the soundproof cotton board is porous structure, consequently better to the eliminating effect of high frequency noise, the two combines together, can reduce the noise pollution that CVS propagated away greatly.

Optionally, each of the hard conical rings is connected with a connecting strip plate.

By adopting the technical scheme, the hard conical rings can be conveniently mounted at one time, and the mounting is simplified; in addition, the installation stability of each hard conical ring and the side soundproof cotton plate can be improved, and the separation of the hard conical rings is reduced.

Optionally, the surface of the fastening plate is provided with a pressure spring abutting against the inner wall of the single hard conical ring.

By adopting the technical scheme, firstly, the hard conical ring is pressed to the side soundproof cotton plate by the elasticity of the pressure spring so as to reduce the separation of the hard conical ring and improve the installation stability of the hard conical ring and the side soundproof cotton plate; secondly, the elasticity of the pressure spring abuts against the inner conical surface of the hard conical ring, and the component force of the elasticity of the pressure spring along the inner conical surface has a centering effect on the side soundproof cotton plate, so that the position accuracy of the side soundproof cotton plate is improved; and the elasticity of the pressure spring has a buffering effect, so that the vibration noise of the hard conical ring can be reduced, and the reflection effect of the hard conical ring on the interference sound energy can be improved.

In summary, the present application includes at least one of the following beneficial technical effects:

the upper soundproof cotton plate and the side soundproof cotton plate are arranged to perform multidirectional noise blocking on the CVS, so that noise transmitted to the outside of the box body is greatly reduced, and the riding experience of people is ensured;

the fastening plates arranged in a staggered manner can apply a large-range resisting force to the side soundproof cotton plate, so that the stability of the side soundproof cotton plate is improved, and the cost is reduced;

drawings

Fig. 1 is a schematic view of the entire structure of embodiment 1.

Fig. 2 is an exploded view for embodying the installation relationship of the upper soundproof cotton sheet and the hatch cover of embodiment 1.

Fig. 3 is a sectional view of the structure for embodying the inside of the case body of embodiment 1.

Fig. 4 is a schematic structural view of a side soundproof cotton sheet of embodiment 1.

Fig. 5 is a schematic structural view of a side soundproof cotton sheet of embodiment 2.

Fig. 6 is an exploded view showing the installation relationship of the hard cone ring and the side soundproof cotton sheet according to example 2.

Description of reference numerals: 1. a side acoustic cotton plate; 2. an upper soundproof cotton plate; 10. a box body; 101. an upper hatch; 102. a hatch cover; 11. a fastening plate; 12. bending the plate; 13. an avoidance groove; 14. a sound absorbing chamber; 15. a hard conical ring; 16. connecting the ribbon boards; 17. a pressure spring; 21. a support plate; 23. a through groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-6.

Example 1 discloses a CVS tank. Referring to fig. 1, the CVS electric multiple unit comprises a box body 10 for mounting the CVS, wherein the CVS is an important part of the electric multiple unit, obtains electric energy from a power grid directly or indirectly, and supplies the electric energy to the electric multiple unit at stable voltage and fixed frequency; the top surface of the case body 10 is provided with an upper hatch 101 and a hatch 102 for closing the upper hatch 101 to facilitate the insertion installation of the CVS.

As shown in fig. 2, the lower surface of the hatch cover 102 is provided with an upper soundproof cotton plate 2, and the upper soundproof cotton plate 2 is a porous sponge structure for blocking and absorbing noise generated from the CVS to reduce the influence of the noise on passengers in the motor train unit.

As shown in fig. 2, a plurality of support plates 21 are fixed on the lower surface of the hatch cover 102, and the support plates 21 are bent pieces; go up all to offer the logical groove 23 that the one-to-one correspondence bearing board 21 set up on the week side of soundproof cotton board 2, bolt and nut fixed connection is passed through with the hatch cover 102 lower surface to one side of bearing board 21, and the opposite side bearing of bearing board 21 is laminated in the lower surface of last soundproof cotton board 2 to ensure the rigidity of the relative hatch cover 102 of last soundproof cotton board 2.

As shown in fig. 3 and 4, a plurality of side soundproof cotton sheets 1 are fixed to an inner side wall of the cabinet body 10, and the side soundproof cotton sheets 1 are also of a porous sponge structure for blocking and absorbing noise generated from the CVS. Two avoidance grooves 13 which are arranged in a penetrating mode are formed in opposite edges of the side soundproof cotton plate 1, and the avoidance grooves 13 are arranged in a staggered mode in the vertical direction.

As shown in fig. 4, the inside wall of the box body 10 is fixed with a plate 12 of bending whose position corresponds to the setting of the avoiding groove 13, the plate 12 of bending is L-shaped, one of the side plates of the plate 12 of bending and the box body 10 are fixedly connected through bolts and nuts, the other side plate of the plate 12 of bending is abutted on the wall of the avoiding groove 13, and the side is integrally formed with a fastening plate 11, the fastening plate 11 is attached to the surface of the side soundproof cotton plate 1, which is far away from the inside wall of the box body 10, so as to ensure the position fixing of the side soundproof cotton plate 1 relative to the box body 10.

The implementation principle of the embodiment 1 is as follows: through the combination that sets up soundproof cotton board 2 and side soundproof cotton board 1, the noise that the greatly reduced propagated to box body 10 outside to ensure people's the experience of taking.

In addition, by optimizing the mounting structure of the side soundproof cotton plate 1, not only can the mounting stability of the side soundproof cotton plate 1 be ensured, but also the mounting cost can be reduced and the sound absorption effect of the side soundproof cotton plate 1 can be ensured.

In embodiment 2, based on embodiment 1, as shown in fig. 5 and 6, a plurality of tapered sound absorbing cavities 14 are concavely formed on the surface of the side soundproof cotton plate 1, which is far away from the inner side wall of the box body 10, the sound absorbing cavities 14 are arranged along a zigzag line, and the sound absorbing cavities 14 at the head end and the tail end are respectively arranged corresponding to the two fastening plates 11.

The side soundproof cotton board 1 is further provided with a zigzag connecting slat 16, the connecting slat 16 is fixed with a plurality of hard conical rings 15 which are arranged in one-to-one correspondence with the sound absorption cavities 14, the connecting slat 16 and the hard conical rings 15 are integrally formed by injection molding, and the outer conical surface of each hard conical ring 15 is attached to the inner conical surface of the sound absorption cavity 14.

A pressure spring 17 is arranged between the surface of the fastening plate 11 and the inner conical surface of the hard conical ring 15 at the end part, one end of the pressure spring 17 is abutted against the surface of the fastening plate 11, and the other end of the pressure spring 17 is abutted against the inner conical surface of the hard conical ring 15.

During installation, firstly, the side soundproof cotton plate 1 is pre-pressed to the inner side wall of the box body 10, and then the hard conical ring 15 is pre-installed in the sound absorption cavity 14 by utilizing the fit between the outer conical surface of the hard conical ring 15 and the inner conical surface of the sound absorption cavity 14; then, place pressure spring 17 in stereoplasm awl ring 15 to go up mounting plate 11, utilize the elasticity of pressure spring 17 to press stereoplasm awl ring 15 to side soundproof cotton board 1, take place in order to reduce the condition that stereoplasm awl ring 15 breaks away from, in order to improve the installation stability of stereoplasm awl ring 15 and side soundproof cotton board 1, at last through the fixed mounting of bolt and nut, in order to install the board 12 of bending on the inside wall of box body 10.

The implementation principle of the embodiment 1 is as follows: when the produced noise of CVS enters into the sound absorbing cavity 14, the sound wave can contact and reflect with the inner wall of the hard conical ring 15, and the sound waves of a plurality of reflections interfere with each other, consume sound energy, namely, resist the formula amortization, thereby playing the effect of absorbing sound, especially the eliminating effect of the middle and low frequency noise is better, and the side soundproof cotton plate 1 is a porous structure, therefore the eliminating effect to the high frequency noise is better, the two combines together, the noise pollution that the CVS spreads out can be greatly reduced.

Further, the attachment of the side soundproof cotton plate 1 is further reinforced by the attachment manner of the plurality of hard conical rings 15 (the contact area between the hard conical rings 15 and the side soundproof cotton plate 1 is large) in cooperation with the abutting fixation of the fastening plate 11.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A CVS box is characterized in that: including box body (10) that is used for installing CVS, the inside wall of box body (10) is fixed with side soundproof cotton board (1), the interior top surface of box body (10) is fixed with soundproof cotton board (2).

2. The CVS cabinet of claim 1, wherein: the inner top surface of the box body (10) is fixed with a plurality of bearing plates (21), the bearing plates (21) are located on the peripheral sides of the upper soundproof cotton plates (2), and the bearing plates (21) abut against the lower surfaces of the upper soundproof cotton plates (2).

3. The CVS cabinet of claim 1, wherein: the utility model discloses a side soundproof cotton board, including box body (10), the inside wall of box body (10) is fixed with mounting plate (11), mounting plate (11) laminate in the surface of keeping away from box body (10) inside wall of side soundproof cotton board (1).

4. A CVS tank according to claim 3, characterized in that: correspond fastening plate (11) of side soundproof cotton board (1) are established to at least two, just fastening plate (11) are along vertical direction dislocation set.

5. The CVS case of claim 4, wherein: a bending plate (12) is fixed on the inner side wall of the box body (10), the bending plate (12) is fixedly connected with the inner side wall of the box body (10), and the other end of the bending plate (12) is integrally connected with the fastening plate (11); the edge of the side soundproof cotton plate (1) is provided with a dodging groove (13) corresponding to the bending plate (12), and the bending plate (12) is located in the dodging groove (13).

6. The CVS case of claim 5, wherein: keep away from of side soundproof cotton board (1) the surperficial sunken shaping of the inside wall of box body (10) has a plurality of toper sound-absorbing chamber (14), the inner wall cover in sound-absorbing chamber (14) is fixed with stereoplasm awl ring (15).

7. The CVS cabinet of claim 6, wherein: the hard conical rings (15) are connected with a connecting strip plate (16) together.

8. The CVS cabinet of claim 7, wherein: and a pressure spring (17) which is abutted against the inner wall of the single hard conical ring (15) is arranged on the surface of the fastening plate (11).