CN114362002B

CN114362002B - Noise reduction device

Info

Publication number: CN114362002B
Application number: CN202111499421.XA
Authority: CN
Inventors: 赵法强; 李小飞; 袁汉凯; 宋泽均; 黄旭; 何亮
Original assignee: Shenzhen Power Supply Bureau Co Ltd
Current assignee: Shenzhen Power Supply Bureau Co Ltd
Priority date: 2021-12-09
Filing date: 2021-12-09
Publication date: 2024-05-10
Anticipated expiration: 2041-12-09
Also published as: CN114362002A

Abstract

The invention relates to a noise reduction device, and mainly relates to the technical field of power grid conveying and distribution. The noise reduction device comprises a mounting box, a buffer and a noise reduction assembly. The installation box is provided with an installation cavity for accommodating a transformer to be tested; one end of the buffer is connected with the mounting box, and the other end of the buffer is used for being connected with a position to be mounted; the noise reduction assembly is arranged in the mounting cavity and comprises a vibrating diaphragm, coils connected to the vibrating diaphragm and at least two magnetic bodies arranged at intervals, and at least one coil connected with a lead wire is arranged between any two adjacent magnetic bodies. By such arrangement, the damper can absorb part of vibration generated by the operation of the transformer mounted in the mounting case and transmitted through the mounting case and the damper; the noise reduction assembly can convert vibration energy generated by the transformer and transmitted to the air by working into electric potential energy in the coil, and transmit the electric potential energy to the outside through the lead wires for use, so that the noise reduction effect is achieved.

Description

Noise reduction device

Technical Field

The invention relates to the technical field of power grid transmission and distribution, in particular to a noise reduction device.

Background

With the rapid development of the economy in China, the electricity consumption of various industries in society is also obviously improved, and the method provides challenges for the power transmission and distribution capacity of the power grid. The transformer is used as an important component in power transmission and distribution of the power grid, and reasonable and reliable installation of the transformer is a precondition for ensuring that the power grid can effectively transmit electric power. However, in the current transformer installation method, the transformer generates loud noise during operation, which greatly affects residents living around. At present, methods commonly used for solving the noise of the transformer mainly improve the main body material of the transformer and limit the transmission path of the noise. However, in the practical application process, the improvement has large engineering amount, high cost and cannot fundamentally solve the noise problem of the transformer.

Disclosure of Invention

Based on this, it is necessary to provide a noise reduction device for the problem of noise generated during the operation of the transformer.

A noise reduction device includes a mounting case, a buffer, and a noise reduction assembly. The mounting box is provided with a mounting cavity for accommodating a piece to be mounted; one end of the buffer is connected with the mounting box, and the other end of the buffer is used for being connected with a position to be mounted; the noise reduction assembly is arranged in the installation cavity and comprises a vibrating diaphragm, coils connected to the vibrating diaphragm and at least two magnetic bodies arranged at intervals, at least one coil connected with a lead wire is arranged between any two adjacent magnetic bodies, and the coil can reciprocate along the length direction of the coil under the vibration action of the vibrating diaphragm.

In one embodiment, a connecting component for connecting the to-be-installed piece is arranged on one side of the noise reduction component, which faces the vibrating diaphragm; the connecting assembly comprises a supporting plate and a supporting arm connected to the supporting plate, the vibrating diaphragm is assembled on one side, away from the supporting arm, of the supporting plate, and the supporting arm is used for connecting the to-be-installed piece.

In one embodiment, the support arm comprises a bracket and a damper connected to the bracket, wherein one end of the damper facing away from the bracket is connected to the support plate, and one end of the bracket facing away from the damper is used for connecting the piece to be mounted.

In one embodiment, the bracket comprises a vertical column and transverse columns connected to two ends of the vertical column, and a buffer gap is formed between the two transverse columns.

In one embodiment, the end, connected with the connecting assembly, of the noise reduction assembly is a first end, the end, connected with the mounting box, of the noise reduction assembly is a second end, the contact area of the first end is larger than that of the second end, and the contact area of the vibrating diaphragm is the same as that of the first end.

In one embodiment, the number of the magnetic bodies is at least three, wherein two of the magnetic bodies located at the start end and the end along the interval arrangement direction are inverted trapezoids, and the rest of the magnetic bodies are bar-shaped.

In one embodiment, the noise reduction device further comprises a plurality of slings connected between the mounting box and the buffer, the slings are circumferentially spaced around the mounting box, and each sling is correspondingly connected with at least one buffer.

In one embodiment, the noise reduction device further comprises a plurality of support columns, the plurality of support columns are circumferentially spaced around the mounting box, and one end of each buffer facing away from the sling is detachably connected with at least one support column.

In one embodiment, the noise reduction device further comprises a plurality of connection lug groups, and the connection lug groups are connected to one end of the buffer away from the sling and one end of the sling away from the buffer; the connecting lug group comprises a fork lug arm, a fastening piece and a connecting cylinder, wherein the fork lug arm is provided with a first fixing hole, the connecting cylinder is connected with the buffer or the sling, and the fastening piece is used for fastening the fork lug arm and the connecting cylinder.

In one embodiment, the noise reduction device further comprises locking pieces and fixing clips fastened to the supporting columns, each fixing clip is provided with a second fixing hole, and the locking pieces penetrate through the second fixing holes and the corresponding first fixing holes to lock the fork lug arms relative to the fixing clips.

The invention has the beneficial effects that:

The application provides a noise reduction device which comprises a mounting box, a buffer and a noise reduction component. The mounting box is provided with a mounting cavity for accommodating a piece to be mounted; one end of the buffer is connected with the mounting box, and the other end of the buffer is used for being connected with a position to be mounted; the noise reduction assembly is arranged in the mounting cavity and comprises a vibrating diaphragm, coils connected to the vibrating diaphragm and at least two magnetic bodies arranged at intervals, and at least one coil connected with a lead wire is arranged between any two adjacent magnetic bodies. Through such setting, the installation box can be in the same place with the subassembly of making an uproar with the buffer of making an uproar for treat the part vibration energy that the installed part produced at the during operation passes through the installation box and transmits to the buffer, and its noise that produces because of the vibration can directly transmit for the subassembly of making an uproar of installing in the installation box, thereby treat the installed part and make an uproar through the buffer with make an uproar the subassembly of making an uproar and make an uproar. In the process, the buffer can absorb part of vibration transmitted by the mounting box, so that the vibration finally transmitted to the position to be mounted is greatly weakened, and the effects of vibration reduction and noise reduction are achieved; meanwhile, the vibration of the vibrating diaphragm in the noise reduction assembly can be driven by the noise generated by vibration of the to-be-installed part, the coil connected with the vibrating diaphragm is driven to reciprocate between two adjacent magnetic bodies along the length direction of the coil and generate electric potential energy, namely, vibration energy carried by the noise transmitted to the air by the to-be-installed part is converted into the electric potential energy in the coil, and the electric potential energy is transmitted to the outside through the lead wire for use, so that the noise transmitted to the air is prevented from being transmitted to a further place. In general, the buffer and the noise reduction assembly are integrated through the mounting box, so that vibration generated by working of the mounting piece is absorbed and converted through the buffer and the noise reduction assembly, and the vibration reduction and noise reduction effects can be effectively achieved.

Drawings

FIG. 1 is a schematic diagram of a noise reduction device according to an embodiment of the present invention;

FIG. 2 is a schematic view of an internal installation structure of an installation box according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a noise reduction assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a support plate according to an embodiment of the present invention;

FIG. 5 is a diagram illustrating a sling connection according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a fixing block according to an embodiment of the present invention.

Reference numerals: 10-supporting columns; 20-installing a box; 30-slings; 31-a set of connection lugs; 311-connecting cylinder; 312-fasteners; 313-fork ear arm; 40-fixing clips; 41-fixing blocks; 42-fixing holes; 43-connecting holes; 50-a noise reduction assembly; 51-vibrating diaphragm; 52-magnetic body; 53-coil; a 60-connection assembly; 61-supporting arms; 611-a stent; 612-a damper; 62-a support plate; 621 a first mounting hole; 622-second mounting hole; 623-square grooves; 70-a buffer; 100-the piece to be installed.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

The transformer can generate vibration when working, and part of the vibration directly generates noise and continuously propagates through air; and the other part can be transmitted to a mounting rack or other mounting tables for mounting the transformer through the transformer body, so that the mounting rack or other mounting tables generate noise again under the action of the vibration, and most of the transformers are mainly mounted by adopting a cross arm fixed type hardware connection mounting method at present, so that vibration energy transmitted to the mounting rack or the mounting tables generates more loud noise. At present, methods commonly used for solving the noise of the transformer mainly improve the main body material of the transformer and limit the transmission path of the noise. However, in the practical application process, the improved engineering amount is large, high cost is required, and the noise problem of the transformer cannot be fundamentally solved. Based on the above, the application provides a noise reduction device which can be used for solving the problem of transformer noise. The noise reduction device is further described below by taking a transformer as an example of a member to be mounted.

Referring to fig. 1, fig. 2, fig. 3 and fig. 5, fig. 1 shows an overall schematic diagram of a noise reduction device according to an embodiment of the present invention, fig. 2 shows a schematic diagram of an installation structure inside an installation box according to an embodiment of the present invention, fig. 3 shows a schematic diagram of a noise reduction assembly according to an embodiment of the present invention, and fig. 5 shows a schematic diagram of connection of a sling according to an embodiment of the present invention. In some embodiments, the noise reduction device includes a mounting box 20 configured with a mounting cavity for receiving the part 100 to be mounted; a buffer 70 having one end connected to the mounting box 20 and the other end for connection to a position to be mounted; the noise reduction assembly 50 is installed in the installation cavity, and comprises a vibrating diaphragm 51, coils 53 connected to the vibrating diaphragm 51 and at least two magnetic bodies 52 arranged at intervals, wherein at least one coil 53 connected with a lead is arranged between any adjacent magnetic bodies 52, and the coils 53 can reciprocate along the length direction of the vibrating diaphragm 51 under the vibration action of the vibrating diaphragm.

Specifically, when the transformer works, vibration generated by the transformer is mainly transmitted through air and a structure connected with the transformer, wherein the vibration transmitted through the air is mainly transmitted in the form of noise sound waves, and the noise sound waves can drive nearby air to vibrate to form air waves for transmission. In the present application, the noise reduction assembly 50 and the damper 70 are combined into one body by the mounting box 20 to jointly reduce vibration and noise generated from the transformer. The installation box 20 is connected to the to-be-installed position through the buffer 70, and the transformer and the noise reduction assembly 50 are installed in the installation cavity of the installation box 20, so that the traditional hardware connection installation mode between the transformer and the to-be-installed position is changed into non-hardware connection installation mode. When part of vibration generated by the operation of the transformer is transmitted to the buffer 70 through the transformer body and the installation box 20, the energy carried by the vibration wave is absorbed by the buffer 70, so that the residual energy of the vibration wave transmitted to the position to be installed is greatly weakened, and the residual energy can not be transmitted to the position to be installed any more, thereby generating larger noise; and the airborne noise sound waves are absorbed by the noise reduction assembly 50. Wherein, the vibrating diaphragm 51 is installed at one end of at least two magnetic bodies 52 arranged at intervals, when the vibrating diaphragm 51 drives the coil 53 to reciprocate along the length direction thereof under the vibration action of the air wave, the coil 53 can cut the magnetic induction lines between two adjacent magnetic bodies 52, and generate electric potential energy inside the coil 53, and the electric potential energy is transmitted to the outside for use through the lead wire, that is, the noise reduction assembly 50 converts the vibrating air wave into the electric potential energy, so that the air wave cannot continuously transmit noise to a further distance. In a specific embodiment, the coil 53 is connected to a closed loop of a battery, an LED lamp, a resistor, etc. by a lead wire, thereby dissipating the generated potential energy.

That is, the present application reduces noise generated by the operation of the transformer in such a manner that the installation box 20 installs the noise reduction assembly 50 and the transformer combination together with the buffer 70 connected between the installation box 20 and the location to be installed. By such arrangement, the buffer 70 and the noise reduction assembly 50 can effectively absorb the vibration generated by the transformer and the noise generated by the synchronous vibration of the air driven by the vibration, thereby effectively avoiding the influence of the noise generated by the transformer on surrounding residents. Further, by assembling the noise reduction unit 50 and the transformer by the assembling case 20, the noise generated by the transformer vibrating with the air due to the vibration can be absorbed in a short distance, and the amplitude of the air wave, the propagation distance of the air wave, and the decibel of the noise can be reduced.

In one particular embodiment, the mounting box 20 is a square with a sealed periphery and an openable top. By the arrangement, the sound absorbing material can be arranged on the wall of the installation cavity so as to further reduce the noise of the transformer; meanwhile, the sealed installation cavity wall can reflect the vibrating air wave, so that the vibration air wave can be absorbed for multiple times through the noise reduction assembly 50, and a better noise reduction effect is achieved. In other embodiments, the installation box 20 may be a hollow cube, and a support frame for installing the noise reduction assembly 50 and the transformer is installed at the bottom of the installation box, and a connection part connected with the buffer 70 is arranged at the side edge of the installation box. It will be appreciated that the mounting box 20 may be of other construction that meets the mounting requirements of the transformer and noise reduction assembly 50.

As shown in fig. 2, in the present embodiment, the noise reduction assembly 50 is installed between the transformer and the bottom plate of the installation case 20, that is, the transformer is not directly in contact with the inner cavity wall of the installation case 20. By means of the arrangement, the integration degree of the installation box 20 on the noise reduction assembly 50 and the buffer 70 can be further improved, so that vibration generated by the transformer in operation can be transmitted through a transmission chain formed by the noise reduction assembly 50, the installation box 20 and the buffer 70 except through air transmission, and the noise reduction assembly 50 and the buffer 70 can double-absorb the vibration generated by the transformer, so that the vibration reduction and noise reduction effect of the application is further improved.

Referring to fig. 2 and 3, in some embodiments, the number of magnetic bodies 52 is at least three, wherein two magnetic bodies 52 located at the start end and the end in the direction of the spaced arrangement are inverted trapezoids, and the remaining magnetic bodies 52 are bar-shaped. Specifically, the two magnetic bodies 52 are in an inverted right trapezoid shape, and the oblique sides of the two inverted right trapezoid magnetic bodies 52 are opposite to each other and are arranged at intervals along the horizontal direction; the strip-shaped magnetic body 52 is arranged between two inverted right trapezoid magnetic bodies 52, and coils 53 are installed in spaced areas between the three magnetic bodies 52. That is, by such an arrangement, a space region equidistant in the vertical direction can be formed between the adjacent two magnetic bodies 52, so that when the coil 53 moves in the space region, the magnetic induction intensity of the adjacent two magnetic bodies 52 acting on the coil 53 can be equalized, so that the reciprocating movement of the coil 53 is not interfered; and simultaneously, the coil 53 can cut magnetic induction lines with equal intensity during reciprocating motion, so that the noise reduction effect and stability of the whole noise reduction assembly 50 are improved. In addition, it is understood that by such an arrangement, the space region formed between the adjacent two magnetic bodies 52 can also provide a movable space for the vibration of the diaphragm 51.

Referring to fig. 2 and 3, in some embodiments, the end of the noise reduction assembly 50 connected to the connecting assembly 60 is a first end, the end of the noise reduction assembly 50 connected to the mounting box 20 is a second end, and the contact area of the first end is larger than the contact area of the second end, and the contact area of the diaphragm 51 is the same as the contact area of the first end. Specifically, the wider end of the plurality of magnetic bodies 52 faces the transformer and is used for being connected with the connecting component 60, and the diaphragm 51 is pressed on the wider end by the connecting component 60 and has the same contact area with the wider end. Through such a setting, the vibrating diaphragm 51 can have a larger surface area to contact with the air wave, so that the range of absorbing the air wave is increased, the intensity of the vibrating diaphragm 51 driving the coil 53 to reciprocate is improved, and the effect of absorbing the air wave for noise reduction is improved.

Referring to fig. 2, in some embodiments, a side of the noise reduction assembly 50 facing the diaphragm 51 is provided with a connection assembly 60 for connecting to a mounting 100; the connection assembly 60 comprises a support plate 62 and a support arm 61 connected to the support plate 62, the diaphragm 51 being mounted on a side of the support plate 62 facing away from the support arm 61, the support arm 61 being adapted to be connected to the component 100 to be mounted. Specifically, the noise reduction assembly 50 and the transformer are connected and installed together through the connection assembly 60, and one end of the support arm 61 in the connection assembly 60, which is away from the support plate 62, is connected with the transformer; the side of the support plate 62 facing away from the support arm 61 is intended to be connected to the noise reduction assembly 50, wherein a diaphragm 51 is mounted between the support plate 62 and the noise reduction assembly 50. By such an arrangement, it is possible to facilitate the combined installation of the transformer and noise reduction assembly 50. In the present embodiment, two support arms 61 are provided in each connection assembly 60, and the two support arms 61 are arranged between the noise reduction assembly 50 and the transformer at intervals along the interval direction of the plurality of magnetic bodies 52 in the noise reduction assembly 50, so that the contact area between the noise reduction assembly 50 and the transformer can be increased to improve the stability of the fixed installation of the two. Meanwhile, by arranging the two supporting arms 61 at intervals, a direct propagation space can be formed between the transformer and the vibrating diaphragm 51, so that the vibrating diaphragm 51 can directly absorb noise generated by the transformer. In some other embodiments, four supporting arms 61 are disposed in each connecting component 60, and the four supporting arms 61 are enclosed between the transformer and the supporting plate 62 to form a rectangular space area along the vertical direction, so that the stability of the installation of the transformer and the effect of absorbing noise by the vibrating diaphragm 51 can be further improved through such arrangement.

As shown in fig. 4, fig. 4 shows a schematic view of a support plate in an embodiment of the invention. In the present embodiment, the support plate 62 is configured with a first mounting hole 621, a second mounting hole 622, and a square groove 623. Wherein, the magnetic body 52 is fixedly connected with the support plate 62 through the first mounting hole 621, and the support arm 61 is fixedly connected with the support plate 62 through the second mounting hole 622. The diaphragm 51 is pressed between the support plate 62 and the magnetic body 52, and the area of the diaphragm 51 in the square groove 623 can drive the coil 53 to reciprocate along the length direction thereof under the vibration action of air wave. With such an arrangement, a secure connection between the noise reduction assembly 50 and the connection assembly 60 can be facilitated; at the same time, the air wave energy from the direction of the transformer is not blocked by the supporting plate 6, so that the vibrating diaphragm 51 can drive the coil 53 to reciprocate along the length direction thereof under the action of the air wave.

In some other embodiments, a suspension wire perpendicular to the thickness direction of the coil 53 is mounted in the square groove 623 of the support plate 62, and acts as a diaphragm 51, one end of the coil 53 is suspended on the suspension wire by a connection wire, and the suspension wire can reciprocate the coil 53 along the length direction of the coil under the action of the vibrating air wave.

With continued reference to fig. 2, in some embodiments, the support arm 61 includes a bracket 611 and a damper 612 coupled to the bracket 611, an end of the damper 612 facing away from the bracket 611 is coupled to the support plate 62, and an end of the bracket 611 facing away from the damper 612 is configured to couple to the member 100 to be mounted. Specifically, one end of the support 611 facing the damper 612 is connected to the support plate 62 by nuts and screws, and both ends of the damper 612 are welded to the support 611 and the support plate 62, respectively. The damper 612 can partially absorb the vibration generated by the transformer so as to improve the vibration and noise reduction effect of the noise reduction device; meanwhile, the stability of the connection between the transformer and the damper 612 can be improved by providing the bracket 611. In a specific embodiment, two dampers 612 are mounted to each support arm 61.

With continued reference to fig. 2, in some embodiments, the bracket 611 includes a post and a cross-post connected to both ends of the post, with a buffer gap configured between the two cross-posts. Specifically, two crossbeams and a stand are side-standing "U" shaped structures, and one of them is connected between transformer and stand, and another crossbeams is connected between stand and attenuator. By such arrangement, the support 611 provides a stable support for the transformer, and the gap between the two transverse posts can also absorb the vibration of the transformer to a certain extent. In a specific embodiment, the open ends of the two brackets 611 of the "U" shaped configuration are disposed opposite to each other, thereby facilitating the installation of the nut and screw.

Referring to fig. 1 and 5, in some embodiments, the noise reduction device further includes a plurality of slings 30 connected between the mounting box 20 and the damper 70, the plurality of slings 30 are circumferentially spaced around the mounting box 20, and at least one damper 70 is correspondingly connected to each of the slings 30. Specifically, the slings 30 have a certain elastic deformability, and when the mounting case 20 is connected to the damper 70 through the slings 30 and mounted at the position to be mounted, the slings 30 can partially absorb the vibration generated from the transformer; meanwhile, the distance between the mounting box 20 and the position to be mounted can be increased by providing the slings 30, so that the load strength of the damper 70 can be reduced to improve the service life of the damper 70. In addition, by providing the slings 30, the distance between the mounting box 20 and the location to be mounted can also be adjusted to improve the adaptability of the mounting box 20 to environments of different locations to be mounted. In one embodiment, the number of slings 30 is four, and four slings 30 are each connected around the mounting box 20. Wherein the sling 30 is a wire rope formed by twisting together several thin wires, which is capable of absorbing part of the vibrations by relaxation.

In one particular embodiment, as shown in fig. 5, a damper 70 is attached to each end of each sling 30 to increase the damping capacity for vibrations.

With continued reference to fig. 1 and 5, in some embodiments, the noise reduction device further includes a plurality of connection ear groups 31, and the connection ear groups 31 are connected to one end of the buffer 70 facing away from the sling 30 and one end of the sling 30 facing away from the buffer 70; the link ear group 31 includes a fork ear arm 313 configured with a fixing hole one, a fastener 312, and a link cylinder 311, the link cylinder 311 is connected to the damper 70, and the fastener 312 fastens the fork ear arm 313 and the link cylinder 311.

Specifically, two buffers 70 connected to two ends of the sling 30 are connected to one end of the sling 30 facing away from the sling 30, namely, one buffer 70 is connected to the mounting box 20 through the connecting ear group 31, and the other buffer 70 is connected to the position to be mounted through the connecting ear group 31. One end of the connecting cylinder 311 is welded with one end of the buffer 70, which is away from the sling 30, the other end of the connecting cylinder is fixedly connected with one end of the fork lug arm 313, which is not provided with a first fixing hole, and a fastening piece 312 is sleeved between the fork lug arm 313 and the connecting cylinder 311 to improve the connection firmness of the fork lug arm 313 and the connecting cylinder 311. Wherein the fork arm 313 is connected with the mounting box 20 or the position to be mounted through the first fixing hole. By such arrangement, the convenience and the firmness of the connection of the damper 70 and the slings 30 to the mounting box 20 and the position to be mounted can be improved. In some other embodiments, only one end of the sling 30 is provided with the bumper 70, and the end of the sling 30 not provided with the bumper 70 is directly connected to the connecting barrel 311 of the lug group 31. In one particular embodiment, the fastener 312 is bolted together by two snap-fit anchors.

Referring to fig. 1, in some embodiments, the noise reduction device further includes a plurality of support columns 10, the plurality of support columns 10 being circumferentially spaced around the mounting box 20, and each bumper 70 being detachably connected to at least one support column 10 at an end thereof facing away from the slings 30. Specifically, one end of the support column 10 is fixedly installed at a position to be installed, and the installation box 20 is installed at the other ends of the plurality of support columns 10 through a plurality of slings 30. Wherein the slings 30 are connected to the support column 10 through one end to which the bumpers 70 are mounted. Through such setting, the mounting box 20 can hang and install between a plurality of support columns 10, when guaranteeing that the mounting box 20 that is equipped with the transformer can reliably install, can also avoid the rigid connection of mounting box 20 and waiting the mounted position to can let hoist cable 30 and buffer 70 can carry out abundant absorption to the vibration that passes through the mounting box 20, in order to realize the damping and fall and make an uproar.

Referring to fig. 6, fig. 6 shows a schematic diagram of a fixing block according to an embodiment of the present invention. In some embodiments, the noise reduction device further includes a locking member and a fixing clip 40 fastened to the support column 10, each fixing clip 40 is configured with a second fixing hole, and the locking member passes through the second fixing hole and the corresponding first fixing hole to lock the fork arm 313 relative to the fixing clip 40.

Specifically, the fixing clip 40 is formed by buckling at least two fixing blocks 41, each fixing block 41 is configured with an arc-shaped groove with the same diameter as the support column 10, and the extension sections on two sides of the arc-shaped groove are configured with fixing holes 42 and connecting holes 43. When the two fixing blocks 41 are fastened to one end of the support column 10 for connection with the sling 30, the two fixing blocks 41 pass through the corresponding fixing holes 42 by bolts to fasten the two fixing blocks to the support column 10, and the connecting holes 43 on the two fixing blocks 41 are opposite to form a second fixing hole for connection with the fork ear arm 313. Through this arrangement, the sling 30 can be stably installed relative to the support column 10, and a shock pad can be pressed between the arc-shaped groove and the support column 10 to further buffer vibration from the transformer. It will be appreciated that the shock pad also increases the friction between the clip 40 and the support post 10 to improve the stability of the connection, while also avoiding the clip 40 from forming a rigid connection with the support post 10 to provide cushioning protection. In a specific embodiment, the fixing clip 40 is formed by buckling two fixing blocks 41.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. A noise reduction device, characterized in that the noise reduction device comprises:

A mounting box (20) configured with a mounting cavity for accommodating a piece (100) to be mounted;

A buffer (70) with one end connected to the mounting box (20) and the other end connected to the position to be mounted;

The noise reduction assembly (50) is arranged in the mounting cavity and comprises a vibrating diaphragm (51), coils (53) connected to the vibrating diaphragm (51) and at least two magnetic bodies (52) which are arranged at intervals, at least one coil (53) connected with a lead wire is arranged between any two adjacent magnetic bodies (52), and the coil (53) can reciprocate along the length direction of the coil under the vibration action of the vibrating diaphragm (51);

a connecting component (60) for connecting the piece to be installed (100) is arranged on one side of the noise reduction component (50) facing the vibrating diaphragm (51);

The connecting assembly (60) comprises a supporting plate (62) and a supporting arm (61) connected to the supporting plate (62), one side of the supporting plate (62) away from the supporting arm (61) is used for being connected with the noise reduction assembly (50), and the vibrating diaphragm (51) is assembled between the supporting plate (62) and the noise reduction assembly (50); the support arms (61) are used for connecting the to-be-mounted piece (100), at least two support arms (61) are arranged, and a plurality of support arms (61) are arranged at intervals along the interval direction of a plurality of magnetic bodies (52) in the noise reduction assembly (50);

The number of the magnetic bodies (52) is at least three, wherein two magnetic bodies (52) positioned at the starting end and the ending end along the interval arrangement direction are in an inverted right trapezoid shape, and the rest of the magnetic bodies (52) are in a strip shape; the oblique sides of the two inverted right trapezoid magnetic bodies (52) are opposite to each other and are arranged at intervals in the horizontal direction, and the strip-shaped magnetic bodies (52) are arranged between the two inverted right trapezoid magnetic bodies (52).

2. Noise reduction device according to claim 1, characterized in that the support arm (61) comprises a bracket (611) and a damper (612) connected to the bracket (611), the end of the damper (612) facing away from the bracket (611) being connected to the support plate (62), the end of the bracket (611) facing away from the damper (612) being intended for connection to the piece to be mounted (100).

3. The noise reduction device according to claim 2, characterized in that the bracket (611) comprises a column and a cross-column connected to both ends of the column, and a buffer gap is constructed between both cross-columns.

4. The noise reduction device according to claim 1, wherein an end of the noise reduction assembly (50) connected to the connection assembly (60) is a first end, an end of the noise reduction assembly (50) connected to the mounting box (20) is a second end, a contact area of the first end is larger than a contact area of the second end, and a contact area of the diaphragm (51) is the same as a contact area of the first end.

5. The noise reduction device according to claim 1, further comprising slings (30) connected between the mounting box (20) and the buffers (70), the number of slings (30) being plural, the slings (30) being circumferentially spaced around the mounting box (20), each sling (30) being correspondingly connected with at least one buffer (70).

6. The noise reducer of claim 5, further comprising a plurality of support columns (10), a plurality of said support columns (10) being circumferentially spaced around said mounting box (20), each said bumper (70) being removably connected to at least one of said support columns (10) at an end thereof facing away from said slings (30).

7. The noise reduction device according to claim 6, further comprising a plurality of connection ear groups (31), wherein the connection ear groups (31) are connected to both an end of the buffer (70) facing away from the sling (30) and an end of the sling (30) facing away from the buffer (70);

the connecting lug group (31) comprises a fork lug arm (313) with a first fixing hole, a fastening piece (312) and a connecting cylinder (311), wherein the connecting cylinder (311) is connected with the buffer (70) or the sling (30), and the fastening piece (312) fastens the fork lug arm (313) and the connecting cylinder (311).

8. The noise reduction device according to claim 7, further comprising a locking member and a fixing clip (40) fastened to the support column (10), each fixing clip (40) being configured with a second fixing hole, the locking member passing through the second fixing hole and the corresponding first fixing hole to lock the fork ear arm (313) relative to the fixing clip (40).