阅读说明：本技术 一种声音信号降噪干扰去除装置 (Noise reduction and interference removal device for sound signal ) 是由 李猷民 林凡勤 吴强 黄锐 吕学宾 马建生 邢海文 吕俊涛 赵斌财 李明明 于凯 于 2021-07-02 设计创作，主要内容包括：本发明涉及声音降噪技术领域,具体的说是一种声音信号降噪干扰去除装置,包括降噪机构、安装机构、密封机构及固定机构；降噪机构实现了对变压器的降噪,降噪机构侧面的安装机构在安装变压器时打开,将安装机构的一端与地面接触,方便安装变压器；降噪机构的底部滑动连接有与安装机构的底部抵触的密封机构,在安装机构需要转动时按压密封机构实现安装机构的转动,在变压器安装完成后松开对密封机构的挤压,密封机构复位,实现对安装机构与降噪机构的密封,降低噪音；降噪机构的顶部安装有固定机构,在需要检修降噪机构内部的变压器的时候转动固定机构实现对降噪机构的拆卸,操作简单,利于对降噪机构内部的变压器的检修。(The invention relates to the technical field of sound noise reduction, in particular to a device for removing noise reduction interference of a sound signal, which comprises a noise reduction mechanism, an installation mechanism, a sealing mechanism and a fixing mechanism, wherein the noise reduction mechanism is arranged on the noise reduction mechanism; the noise reduction mechanism realizes noise reduction on the transformer, the mounting mechanism on the side surface of the noise reduction mechanism is opened when the transformer is mounted, and one end of the mounting mechanism is contacted with the ground, so that the transformer is conveniently mounted; the bottom of the noise reduction mechanism is slidably connected with a sealing mechanism which is abutted against the bottom of the mounting mechanism, the sealing mechanism is pressed to realize the rotation of the mounting mechanism when the mounting mechanism needs to rotate, the extrusion on the sealing mechanism is loosened after the transformer is mounted, the sealing mechanism resets, the sealing between the mounting mechanism and the noise reduction mechanism is realized, and the noise is reduced; the fixing mechanism is installed at the top of the noise reduction mechanism, and when the transformer in the noise reduction mechanism needs to be overhauled, the fixing mechanism is rotated to realize the disassembly of the noise reduction mechanism, so that the operation is simple, and the overhaul of the transformer in the noise reduction mechanism is facilitated.)

1. A noise reduction and interference removal device for sound signals is characterized by comprising a noise reduction mechanism (1), an installation mechanism (2), a sealing mechanism (3) and a fixing mechanism (4), wherein the installation mechanism (2) used for facilitating installation of a transformer is arranged on the side surface of the noise reduction mechanism (1) used for protecting and reducing noise of a transformer substation, the side surface of the installation mechanism (2) is of a right trapezoid structure, the sealing mechanism (3) used for sealing the whole mechanism and improving the noise reduction effect is connected to the bottom of the noise reduction mechanism (1) in a sliding mode, one end of the sealing mechanism (3) is abutted to the bottom of the installation mechanism (2), the side surface of the sealing mechanism (3) is of an L-shaped structure, the fixing mechanism (4) used for facilitating overhaul of the transformer is installed at the top of the noise reduction mechanism (1), the top edge of the noise reduction mechanism (1) is obliquely arranged.

2. The apparatus according to claim 1, wherein: noise reduction mechanism (1) includes box (11), base (12), apron (13), drain bar (14) and acoustic celotex board (15), the one end of installation mechanism (2) rotate connect in the side of box (11), cavity cuboid structure the bottom welding of box (11) has base (12), the top lock of box (11) is connected with apron (13), the lateral wall of apron (13), the side all weld drain bar (14), the cross-section of drain bar (14) is right angled triangle structure, the inner wall, the inboard of box (11) all are equipped with acoustic celotex board (15).

3. The apparatus according to claim 2, wherein: installation mechanism (2) include curb plate (21), installing port (24) and pivot (25), the side of box (11) is seted up and is the rectangle structure installing port (24), and the side is the right trapezoid structure curb plate (21) pass through pivot (25) rotate connect in the side of box (11), just curb plate (21) with installing port (24) lock.

4. The apparatus according to claim 3, wherein: the mounting mechanism (2) also comprises an operation opening (22), a screw rod (23), a push block (26), a clamping rod (27) and a tension spring (28), the side surface of the side plate (21) is provided with the operation opening (22) which is in a rectangular structure, the inside of the side plate (21) is relatively connected with a clamping rod (27) with a cross-shaped section, and the tension springs (28) are clamped between the two clamping rods (27) and the side plates (21), the inner side of the side plate (21) is in threaded connection with the screw rod (23), the surface of the screw rod (23) positioned inside the side plate (21) is welded with the push block (26) which is in a cone-shaped structure, the side wall of the push block (26) is abutted against the end parts of the two clamping rods (27), and the back ends of the two clamping rods (27) are buckled with the holes on the inner wall of the box body (11).

5. The apparatus according to claim 3, wherein: the sealing mechanism (3) comprises a movable cavity (31), a pressure spring (32), a pedal (33), a sealing plate (34) and a sealing gasket (35), the side wall of the base (12) is provided with the movable cavity (31), the sealing plate (34) is connected inside the base (12) in a sliding way, the pedal (33) is vertically welded on the side surface of the sealing plate (34), the pedal (33) and the side surface of the sealing plate (34) are in an L-shaped structure, and the width of the pedal (33) is larger than the distance between the side surface of the sealing plate (34) and the side surface of the base (12), a plurality of pressure springs (32) are clamped between the pedal (33) and the base (12), the top end of the sealing plate (34) extends to the interior of the box body (11), and the top of the sealing plate (34) is bonded with the sealing gasket (35) which is abutted against the bottom of the side plate (21).

6. The apparatus according to claim 2, wherein: the fixing mechanism (4) comprises a protective ring (41), a sealing cover (42), a mounting seat (43), a toothed plate (44), a limiting ring (45), a spring (46), a rotary disc (47), a gear (48), a clamping plate (49) and a clamping groove (49a), the protective ring (41) is welded at the center of the top of the cover plate (13), the sealing cover (42) is hinged to the top of the protective ring (41), the rotary disc (47) with a T-shaped cross section is rotatably connected to the top of the cover plate (13), the gear (48) is welded at the bottom of the rotary disc (47), the two mounting seats (43) are welded in the cover plate (13) in a diagonal manner, the toothed plate (44) with an L-shaped cross section is slidably connected to the two mounting seats (43), and the limiting ring (45) is welded to the side wall of the toothed plate (44), and two spacing collar (45) and two all the centre gripping have between mount pad (43) spring (46), two the back of the body end that backs up of pinion rack (44) all welds cardboard (49), cardboard (49) with the cross-section of pinion rack (44) is "L" shape structure, and two pinion rack (44), two cardboard (49) imbeds respectively the inner wall of box (11), just the inner wall of box (11) has seted up relatively draw-in groove (49a), and two cardboard (49) block respectively connect in two the inside of draw-in groove (49 a).

Technical Field

The invention relates to the technical field of sound noise reduction, in particular to a device for removing noise reduction interference of a sound signal.

Background

Sound is sound waves generated by the vibration of an object. Is a wave phenomenon that propagates through a medium (air or solid, liquid) and can be perceived by the human or animal auditory organ. The object that initially emits the vibration (shock) is called the sound source. Sound propagates in the form of waves (vibrations). Sound is the movement of sound waves propagating through any medium; the sound signal is also called audio signal, and the frequency range of audio frequency and the evaluation standard of sound quality generally consider that 20 Hz-20 kHz is the auditory frequency band of human ears, which is called as 'audio frequency'. The sound in this frequency band is called "audible sound", the sound above 20kHz is called "ultrasonic sound", the sound below 20Hz is called "infrasound", the transformer of some substations can also produce sound when the sound exceeds a certain range, and the sound is also noise.

The transformer noise interference elimination of present transformer substation is through the outside installation noise insulation mechanism at the transformer, reduces the noise of transformer during operation, and the noise insulation mechanism of all-round parcel is when pressing the transformer of chapter, because the quality of transformer is big, inconvenient installs the transformer in the inside of falling the mechanism of making an uproar, and the mechanism of making an uproar that falls that is located the transformer outside is difficult to open the mechanism of making an uproar, inconvenient maintenance to the transformer when the transformer need be overhauld.

Disclosure of Invention

Aiming at the problems in the prior art, the invention provides a device for removing noise reduction interference of a sound signal.

The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides an interference remove device that makes an uproar falls in sound signal, falls mechanism, installation mechanism, sealing mechanism and fixed establishment including making an uproar, is used for protecting, falling the transformer of transformer substation fall the side of making an uproar the mechanism of making an uproar be equipped with and be used for making things convenient for the transformer installation mechanism, installation mechanism's side is the right trapezoid structure, just the bottom sliding connection who falls the mechanism of making an uproar has and is used for sealing up, improving the noise reduction effect to whole mechanism sealing mechanism, sealing mechanism's one end with installation mechanism's bottom is contradicted, just sealing mechanism's side is "L" shape structure, fall the top of the mechanism of making an uproar and install and be used for conveniently overhauing the transformer fixed establishment, the top border department of the mechanism of making an uproar is the slope setting.

Specifically, it includes box, base, apron, drain bar and acoustic celotex board to fall the mechanism of making an uproar, installation mechanism's one end rotate connect in the side of box, cavity cuboid structure the bottom welding of box has the base, the top lock of box is connected with the apron, the lateral wall of apron, the side all weld have the drain bar, the cross-section of drain bar is the right angled triangle structure, the inner wall of box, inboard all are equipped with the acoustic celotex board.

Specifically, installation mechanism includes curb plate, installing port and pivot, the side of box is seted up and is the rectangle structure the installing port, the side is the right trapezoid structure the curb plate passes through the pivot rotate connect in the side of box, just the curb plate with the installing port lock.

Specifically, installation mechanism still includes operation mouth, lead screw, ejector pad, kelly and extension spring, the side of curb plate is seted up and is the rectangle structure the operation mouth, the inside relative sliding connection of curb plate has the cross-section to be "ten" font structure the kelly, and two the kelly with equal centre gripping has between the curb plate the extension spring, the inboard threaded connection of curb plate has the lead screw is located inside the curb plate the skin weld of lead screw has and is round platform shape structure the ejector pad, the lateral wall and two of ejector pad the tip of kelly is contradicted, and two the back of the body end of sticking the pole with the inner wall hole lock of box.

Specifically, sealing mechanism includes activity chamber, pressure spring, footboard, closing plate and sealed pad, the lateral wall of base has been seted up activity chamber, the inside sliding connection of base has the closing plate, the perpendicular welding in side of closing plate has the footboard, the footboard with the side of closing plate is "L" shape structure, just the width of footboard is greater than the side of closing plate arrives distance between the base side, the footboard with the centre gripping has a plurality ofly between the base the pressure spring, the top of closing plate extends to the inside of box, just the top of closing plate bond have with the bottom of curb plate is contradicted sealed pad.

Specifically, the fixing mechanism comprises a protective ring, a sealing cover, mounting seats, toothed plates, limiting rings, springs, a rotary table, a gear, clamping plates and clamping grooves, the protective ring is welded at the center of the top of the cover plate, the sealing cover is hinged to the top of the protective ring, the rotary table with a T-shaped structure in cross section is rotatably connected to the top of the cover plate, the gear is welded to the bottom of the rotary table, two mounting seats are oppositely and diagonally welded to the inside of the cover plate, the toothed plates with L-shaped structures in cross section are respectively and slidably connected to the inside of the two mounting seats, the limiting rings are welded to the side walls of the two toothed plates, the springs are clamped between the two limiting rings and the two mounting seats, the clamping plates are welded to the back ends of the two toothed plates, and the clamping plates are respectively and structurally shaped in cross sections, and the two toothed plates and the two clamping plates are respectively embedded into the inner wall of the box body, the clamping grooves are oppositely formed in the inner wall of the box body, and the two clamping plates are respectively clamped and connected in the two clamping grooves.

The invention has the beneficial effects that:

(1) according to the device for removing noise reduction interference of the sound signal, the noise reduction mechanism is used for reducing noise of the transformer, the mounting mechanism on the side surface of the noise reduction mechanism is opened when the transformer is mounted, one end of the mounting mechanism is in contact with the ground, and the transformer is conveniently mounted; namely: when the transformer of the transformer substation is installed, the installation mechanism on the side face of the box body is opened, the transformer is further placed into the box body, the base supports the box body, after the transformer is installed into the box body, the cover plate is fixed with the box body through the fixing mechanism, further, the drain plates on the periphery of the cover plate are beneficial to draining in rainy days, rainwater is prevented from entering the box body to damage the transformer, and the sound insulation plates on the inner wall of the box body are used for reducing the noise of the transformer during working; open the curb plate in the inside of installation transformer to box, with the one end and the ground contact of curb plate, rotate when the curb plate rotates between pivot and the box and be connected, with curb plate and ground contact back, the curb plate is the slope setting, does benefit to and removes the inside of box from the curb plate with the transformer, does benefit to the installation of transformer.

(2) According to the device for removing noise reduction interference of the sound signal, the bottom of the noise reduction mechanism is slidably connected with the sealing mechanism which is abutted against the bottom of the mounting mechanism, the sealing mechanism is pressed to realize the rotation of the mounting mechanism when the mounting mechanism needs to rotate, the extrusion to the sealing mechanism is released after the transformer is mounted, the sealing mechanism resets, the sealing between the mounting mechanism and the noise reduction mechanism is realized, and the noise is reduced; namely: the footboard is pressed with the foot to the staff in curb plate pivoted time, has realized the shrink of a plurality of pressure springs of footboard bottom, and further closing plate contracts the inside of base, and further realization the rotation of curb plate when the curb plate is sealed with the installing port, unclamp the footboard, realized the pressure spring and reset the closing plate, realized so sealed the bottom of filling up with the curb plate and contradict, do benefit to so comprehensively sealed to the box, reduce the noise of transformer.

(3) According to the device for removing noise reduction interference of the sound signal, the fixing mechanism is mounted at the top of the noise reduction mechanism, and when the transformer in the noise reduction mechanism needs to be overhauled, the fixing mechanism is rotated to disassemble the noise reduction mechanism, so that the device is simple to operate and beneficial to overhauling of the transformer in the noise reduction mechanism; namely: when the inside transformer of box needs to be overhauld, open the sealed lid at protection ring top, clockwise rotation is located the carousel on the inboard apron of protection ring, realized the carousel and driven gear anticlockwise rotation, further realization two pinion racks are driven the back of the body and move mutually by the gear, the cardboard of two pinion rack back ends takes out from the draw-in groove of box inner wall so, further realization is to the dismantlement of apron, do benefit to and overhaul the inside transformer of box, when installing the apron, clockwise rotation carousel, the pinion rack shrink has been realized, the top back pine carousel of putting into the box with the pinion rack, realized resetting the pinion rack to the spring, and then the inside of cardboard block to the draw-in groove, accomplish the installation to the apron.

Drawings

The invention is further illustrated with reference to the following figures and examples.

Fig. 1 is a schematic structural diagram illustrating an overall structure of a noise reduction and interference elimination apparatus for an audio signal according to a preferred embodiment of the present invention;

FIG. 2 is an enlarged view of the part A shown in FIG. 1;

FIG. 3 is a schematic view of the connection structure of the noise reduction mechanism, the mounting mechanism and the sealing mechanism shown in FIG. 2;

FIG. 4 is a schematic view of a connection structure between the noise reduction mechanism and the fixing mechanism shown in FIG. 1;

FIG. 5 is an enlarged view of the structure of the portion B shown in FIG. 4;

FIG. 6 is an enlarged view of the structure of the portion C shown in FIG. 4;

FIG. 7 is a schematic view of the connection structure between the case and the mounting mechanism shown in FIG. 1.

In the figure: 1. the noise reduction mechanism comprises a noise reduction mechanism 11, a box body, 12, a base, 13, a cover plate, 14, a drainage plate, 15, a sound insulation plate, 2, an installation mechanism, 21, a side plate, 22, an operation opening, 23, a screw rod, 24, an installation opening, 25, a rotating shaft, 26, a push block, 27, a clamping rod, 28, a tension spring, 3, a sealing mechanism, 31, a movable cavity, 32, a pressure spring, 33, a pedal, 34, a sealing plate, 35, a sealing gasket, 4, a fixing mechanism, 41, a protective ring, 42, a sealing cover, 43, an installation seat, 44, a toothed plate, 45, a limiting ring, 46, a spring, 47, a rotary table, 48, a gear, 49, a clamping plate, 49a and a clamping groove.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1-7, the noise reduction and interference elimination device for acoustic signals according to the present invention comprises a noise reduction mechanism 1, a mounting mechanism 2, a sealing mechanism 3 and a fixing mechanism 4, the side surface of the noise reduction mechanism 1 for protecting and reducing noise of the transformer substation is provided with the installation mechanism 2 for facilitating the installation of the transformer, the side surface of the installation mechanism 2 is of a right-angled trapezoid structure, and the bottom of the noise reduction mechanism 1 is connected with the sealing mechanism 3 which is used for sealing the whole mechanism and improving the noise reduction effect in a sliding way, one end of the sealing mechanism 3 is abutted against the bottom of the mounting mechanism 2, and the side of sealing mechanism 3 is "L" shape structure, the top of mechanism 1 of making an uproar is fallen and is installed and be used for conveniently overhauing the transformer fixed establishment 4, the top border department of mechanism 1 of making an uproar falls is the slope setting.

Specifically, the noise reduction mechanism 1 comprises a box body 11, a base 12, a cover plate 13, a drainage plate 14 and a sound insulation plate 15, one end of the installation mechanism 2 is rotatably connected to the side surface of the box body 11, the base 12 is welded at the bottom of the box body 11 with a hollow cuboid structure, the cover plate 13 is connected to the top of the box body 11 in a buckling manner, the drainage plate 14 is welded on the side wall and the side surface of the cover plate 13, the cross section of the drainage plate 14 is in a right-angled triangle structure, the sound insulation plate 15 is arranged on the inner wall and the inner side of the box body 11, the installation mechanism 2 on the side surface of the box body 1 is opened when the transformer of the transformer substation is installed, the transformer is further placed into the box body 11, the base 12 supports the box body 11, the cover plate 13 is fixed with the box body 11 through the fixing mechanism 4 after the transformer is installed into the box body 11, further, apron 13 is all around drain bar 14 does benefit to the drainage of rainy day, avoids the rainwater to enter into the inside harm transformer of box 11 is located 11 inner wall of box baffle 15 realizes reducing the transformer noise at the during operation.

Specifically, installation mechanism 2 includes curb plate 21, installing port 24 and pivot 25, the side of box 11 has been seted up and has been the rectangle structure installing port 24, the side is the right trapezoid structure curb plate 21 passes through pivot 25 rotate connect in the side of box 11, just curb plate 21 with installing port 24 lock is arrived at the installation transformer opening during the inside of box 11 curb plate 21 will the one end and the ground contact of curb plate 21 when curb plate 21 rotates pivot 25 with rotate between the box 11 and connect, will curb plate 21 and ground contact after, curb plate 21 is the slope setting, does benefit to the transformer follow move on the curb plate 21 the inside of box 11 does benefit to the installation of transformer.

Specifically, the mounting mechanism 2 further includes an operation opening 22, a screw rod 23, a push block 26, a clamping rod 27 and a tension spring 28, the operation opening 22 is provided on the side surface of the side plate 21, the clamping rod 27 with a cross-shaped cross section is connected to the inside of the side plate 21 in a relatively sliding manner, the tension spring 28 is clamped between the two clamping rods 27 and the side plate 21, the screw rod 23 is connected to the inner side of the side plate 21 in a threaded manner, the push block 26 with a circular truncated cone-shaped cross section is welded to the surface of the screw rod 23 inside the side plate 21, the side wall of the push block 26 is abutted against the end portions of the two clamping rods 27, the two clamping rods 27 are fastened with the inner wall holes of the box 11 in a back-to-back manner, the side plate 21 is fastened with the mounting opening 24 after the transformer is mounted, and the hand of a further worker is inserted into the operation opening 22, further clockwise rotation the lead screw 23 has realized the ejector pad 26 to the inner wall of curb plate 21 removes, further because the ejector pad 26 is round platform shape structure, so when the ejector pad 26 removed, realized two the jamming rod 27 back of the body extrudees, and further the extension spring 28 opens, and then two the jamming rod 27 block respectively inside the hole of box 11 inner wall, realized right curb plate 21's is fixed easy operation.

Specifically, the sealing mechanism 3 includes a movable cavity 31, a pressure spring 32, a pedal 33, a sealing plate 34 and a sealing pad 35, the movable cavity 31 is opened on the side wall of the base 12, the sealing plate 34 is slidably connected to the inside of the base 12, the pedal 33 is vertically welded to the side surface of the sealing plate 34, the pedal 33 and the side surface of the sealing plate 34 are in an L-shaped structure, the width of the pedal 33 is larger than the distance from the side surface of the sealing plate 34 to the side surface of the base 12, the pressure springs 32 are clamped between the pedal 33 and the base 12, the top end of the sealing plate 34 extends to the inside of the box body 11, the sealing pad 35 abutting against the bottom of the side plate 21 is bonded to the top of the sealing plate 34, when the side plate 21 rotates, a worker presses the pedal 33 with the foot part, so as to realize the contraction of the pressure springs 32 at the bottom of the pedal 33, the sealing plate 34 is further retracted into the base 12, so that the side plate 21 is further rotated, when the side plate 21 is sealed with the mounting opening 24, the pedal 33 is released, the sealing plate 34 is reset by the pressure spring 32, the sealing gasket 35 is abutted against the bottom of the side plate 21, the box body 11 is completely sealed, and the noise of the transformer is reduced.

Specifically, the fixing mechanism 4 includes a protection ring 41, a sealing cover 42, mounting seats 43, toothed plates 44, a limiting ring 45, springs 46, a rotary table 47, a gear 48, two clamping plates 49 and a clamping groove 49a, the protection ring 41 is welded at the center of the top of the cover plate 13, the sealing cover 42 is hinged at the top of the protection ring 41, the rotary table 47 with a T-shaped cross section is rotatably connected at the top of the cover plate 13, the gear 48 is welded at the bottom of the rotary table 47, two mounting seats 43 are welded in the cover plate 13 in a diagonal manner, the toothed plates 44 with L-shaped cross sections are slidably connected in the two mounting seats 43, the limiting rings 45 are welded on the side walls of the two toothed plates 44, the springs 46 are clamped between the two limiting rings 45 and the two mounting seats 43, and the clamping plates 49 are welded at the opposite ends of the two toothed plates 44, the cross sections of the two clamping plates 49 and the toothed plate 44 are in an L-shaped structure, the two toothed plates 44 and the two clamping plates 49 are respectively embedded in the inner wall of the box body 11, the clamping grooves 49a are oppositely formed in the inner wall of the box body 11, and the two clamping plates 49 are respectively connected to the insides of the two clamping grooves 49a in a clamping manner, when the internal transformer of the box body 11 needs to be overhauled, the sealing cover 42 at the top of the protective ring 41 is opened, the rotating disc 47 on the cover plate 13 on the inner side of the protective ring 41 is rotated clockwise, the rotating disc 47 drives the gear 48 to rotate counterclockwise, further, the two toothed plates 44 are driven by the gear 48 to move back and forth, so that the clamping plates 49 at the opposite ends of the two toothed plates 44 are taken out of the clamping grooves 49a in the inner wall of the box body 11, and further, the cover plate 13 is disassembled, do benefit to right the inside transformer of box 11 overhauls, install in the time of apron 13, clockwise rotation carousel 47 has realized toothed plate 44 contracts, will toothed plate 44 is put into loosen behind the top of box 11 carousel 47 has realized right spring 46 will toothed plate 44 resets, and then cardboard 49 block is in the inside of draw-in groove 49a, the completion is right the installation of apron 13.

When the transformer substation transformer is used, firstly, the mounting mechanism 2 on the side face of the box body 1 is opened when the transformer substation transformer is mounted, the transformer is further placed into the box body 11, the base 12 supports the box body 11, after the transformer is mounted into the box body 11, the cover plate 13 is fixed with the box body 11 through the fixing mechanism 4, further, the drainage plates 14 on the periphery of the cover plate 13 are beneficial to drainage in rainy days, rainwater is prevented from entering the box body 11 to damage the transformer, and the sound insulation plate 15 on the inner wall of the box body 11 is used for reducing the noise of the transformer during working; when the transformer is installed in the box body 11, the side plate 21 is opened, one end of the side plate 21 is in contact with the ground, the rotating shaft 25 is in rotating connection with the box body 11 when the side plate 21 rotates, and after the side plate 21 is in contact with the ground, the side plate 21 is obliquely arranged, so that the transformer can be moved from the side plate 21 to the interior of the box body 11, and the installation of the transformer is facilitated; then, after the transformer is installed, the side plate 21 is clamped with the installation opening 24, the hand of a further worker extends into the operation opening 22, the screw 23 is further rotated clockwise to enable the push block 26 to move towards the inner wall of the side plate 21, and further because the push block 26 is in a circular truncated cone-shaped structure, when the push block 26 moves, the two clamping rods 27 are squeezed back to back, the further tension spring 28 is opened, and the two clamping rods 27 are clamped into holes in the inner wall of the box body 11 respectively, so that the fixing of the side plate 21 is achieved, and the operation is simple; when the side plate 21 rotates, a worker presses the pedal 33 by feet, so that the compression springs 32 at the bottom of the pedal 33 are contracted, the sealing plate 34 is further contracted into the base 12, the rotation of the side plate 21 is further realized, when the side plate 21 is sealed with the mounting hole 24, the pedal 33 is loosened, the sealing plate 34 is reset by the compression springs 32, the sealing gasket 35 is abutted against the bottom of the side plate 21, the box body 11 is favorably sealed comprehensively, and the noise of a transformer is reduced; finally, when needing to overhaul the internal transformer of box 11, open the sealed lid 42 at protection ring 41 top, clockwise turning is located the carousel 47 on the inboard apron 13 of protection ring 41, it has driven gear 48 anticlockwise rotation to have realized carousel 47, further realized that two pinion rack 44 is driven the back-to-back movement by gear 48, then the cardboard 49 of two pinion rack 44 looks back ends takes out from the draw-in groove 49a of box 11 inner wall, further realization is to the dismantlement of apron 13, do benefit to overhauing the transformer of box 11 inside, when installing apron 13, clockwise turning carousel 47, toothed plate 44 shrink has been realized, put pinion rack 44 into the top of box 11 back loose carousel 47, realized resetting pinion rack 44 to spring 46, and then inside that cardboard 49 blocks to draw-in groove 49a, accomplish the installation to apron 13.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.