Silencing and damping power distribution cabinet

Abstract

The power distribution cabinet comprises a cabinet body, an opening is formed in the front of the cabinet body, a cabinet door is hinged to the opening, a mounting plate is arranged on the rear side wall of an inner cavity of the cabinet body, a plurality of butt-welding bosses protruding towards the direction of the inner cavity of the cabinet body through stamping are arranged on the rear side wall, and fixing studs are welded to the butt-welding bosses. The mounting plate is provided with fixing holes corresponding to the fixing studs, the fixing holes penetrate through the fixing studs, the mounting plate is fixed to the rear side wall, the fixing studs are sleeved with buffer gaskets and buffer bushings, the buffer gaskets are clamped between the mounting plate and the butt-welding boss, and the buffer bushings are clamped between the mounting plate and the butt-welding boss. The buffering bush comprises a radial supporting cylinder located between the inner wall of the fixing hole and the outer wall of the fixing stud and an axial supporting disc located at the end, away from the butt-welding boss, of the radial supporting cylinder, the axial supporting disc is located on the surface of the mounting plate at the end, away from the butt-welding boss, of the fixing hole, and the fixing stud is provided with a supporting plate abutting against the axial supporting disc. The nut is used for fixing the axial supporting disc, the mounting plate and the buffer gasket on the butt-welding boss; the mounting plate and the rear side wall are isolated through a butt-welding boss to form a shock-stopping gap, and a sound insulation shock-stopping plate is arranged in the shock-stopping gap. The utility model has the advantages that the working noise of electrical elements can be effectively reduced, the resonance of the mounting plate and the cabinet body is reduced, and the punching and positioning are convenient.

Description

Technical Field

[0001] The utility model relates to the field of power distribution cabinets, and specifically relates to a sound-silence and shock-absorbing power distribution cabinet. Background Art

[0002] When the distribution cabinet is assembled, a mounting plate (usually a bakelite board) will be set on its rear side wall, and the mounting plate is used to install components such as tracks and terminal posts, so as to facilitate the fixing of electrical components to the mounting plate through the tracks; the contactors, relays, and auxiliary contact electrical components located on the mounting plate often generate noise during operation, such as vibrations caused by attraction, current sounds caused by coil charging, etc., especially the vibrations caused by attraction, which will be amplified by the mounting plate and the side wall of the distribution cabinet, causing the distribution cabinet to make too much noise during operation; at the same time, the mounting plate needs to have fixing holes on the plate body, and the fixing holes must be matched with the fixing studs in the distribution cabinet. Due to the lack of corresponding positioning references, the opening of the fixing holes is more troublesome; similarly, when installing basic fixings such as tracks on the mounting plate, the distance between adjacent tracks and whether the two ends of the tracks are at the same level also require tedious measurements to meet. Utility Model Content

[0003] Based on the above problems, the utility model aims to provide a sound-absorbing and shock-absorbing distribution cabinet that can effectively reduce the working noise of electrical components, reduce the resonance of the installation plate and the cabinet body, and facilitate drilling and positioning.

[0004] In view of the above problems, the following technical solutions are provided: a sound-absorbing and shock-absorbing power distribution cabinet, comprising a cabinet body, an opening is provided in the front of the cabinet body, a cabinet door is hinged at the opening, a mounting plate is provided on the rear side wall of the cabinet body cavity, the rear side wall is provided with a plurality of butt-welding bosses protruding toward the cabinet body cavity by stamping, the butt-welding bosses are welded with fixing studs, the mounting plate is provided with fixing holes corresponding to the fixing studs, the fixing holes pass through the fixing studs and fix the mounting plate to the rear side wall, the fixing stud sleeve is provided with a buffer gasket and a buffer bushing, the buffer gasket The sheet is clamped between the mounting plate and the butt welding boss, the buffer bushing includes a radial support tube located between the inner wall of the fixing hole and the outer wall of the fixing stud, and an axial support disk located at the end of the radial support tube away from the butt welding boss, the axial support disk is located on the surface of the mounting plate at the end of the fixing hole away from the butt welding boss, the fixing stud is provided with a nut that abuts against the axial support disk, fixing the axial support disk, the mounting plate, and the buffer gasket on the butt welding boss; a shock-absorbing gap is formed between the mounting plate and the rear side wall through isolation by the butt welding boss, and a sound-proof and shock-absorbing plate is provided in the shock-absorbing gap.

[0005] In the above structure, the side of the mounting plate facing the butt welding boss is separated from the butt welding boss by a buffer gasket, and the fixing stud and the fixing hole are separated by a radial support tube of the buffer bushing, and the side of the mounting plate facing away from the butt welding boss is separated from the nut by an axial support disk, thereby avoiding rigid contact with the fixing stud and achieving the buffering purpose; and the electrical components such as contactors, relays, auxiliary contacts, etc. installed above the mounting plate, when working, the movement direction of their armatures, contacts and other moving parts is often perpendicular to the surface of the mounting plate. The sound insulation and vibration-absorbing plate is arranged between the mounting plate and the rear side wall, which can effectively absorb the vibration and noise caused by the impact of the moving parts, avoid the drumming effect that causes the sound to be amplified, and effectively isolate the buzzing sound caused by the electromagnetic coil being energized, thereby reducing the vibration and noise of the distribution cabinet operation.

[0006] The utility model further provides that the left side wall, right side wall, upper side wall and lower side wall of the inner cavity of the cabinet are attached with sound insulation and shock-proof plates.

[0007] In the above structure, the cabinet body is generally formed by bending metal plates. For some small distribution cabinets, the wall thickness of the cabinet body is also relatively thin, which is prone to deformation and vibration, resulting in poor sound insulation or resonance. Setting sound insulation and vibration-damping plates on the left wall, right wall, upper wall and lower wall can effectively reduce vibration and noise.

[0008] The utility model further provides that the cabinet door faces the inner cavity of the cabinet body with a sound-insulating shock-resisting plate.

[0009] In the above structure, as a moving part, the cabinet door is more likely to generate vibration and noise. Setting a sound insulation and vibration-resisting plate can effectively reduce noise for the cabinet door.

[0010] The utility model further provides that the two sides of the sound-insulating shock-resisting plate in the shock-resisting gap are opposite to the mounting plate and the rear side wall respectively.

[0011] In the above structure, the mounting plate presses the sound insulation and vibration-proof plate onto the rear side wall by screwing the nut and the fixing stud together, and the space between the two is tightly filled with the sound insulation and vibration-proof plate. At the same time, the vibration-proof gap can ensure that when fixing the rail and other components on the mounting plate, the screws can smoothly pass through the vibration-proof gap to reach the vibration-proof gap, thereby ensuring effective fixation between the screws and the mounting plate.

[0012] The utility model further provides that the buffer gasket and the buffer bushing are made of silicone or rubber material; the axial length of the radial support cylinder is greater than the thickness of the mounting plate.

[0013] In the above structure, the positioning accuracy is taken into consideration when the fixing hole is opened, and its hole diameter is often much larger than the outer diameter of the fixing stud, so as to compensate for the positioning accuracy. This results in an excessively large distance between the inner wall of the fixing hole and the outer wall of the fixing stud. The axial length of the radial support tube is set to be larger than the thickness of the mounting plate. When the nut is tightened, axial pushing can be generated to increase the wall thickness of the radial support tube to fill the gap between the inner wall of the fixing hole and the outer wall of the fixing stud.

[0014] The utility model further provides that the axial support plate is integrally connected with the radial support cylinder.

[0015] In the above structure, the integrated connection is convenient for installation, and the buffer gasket and the buffer bushing can be installed in a parallel manner.

[0016] The utility model further provides that one of the mounting plates is provided with several positioning markings arranged equidistantly along the length and width directions thereof.

[0017] In the above structure, the positioning marking line is used for positioning and distance reference to ensure the relative position accuracy of the spacing between the fixing holes; at the same time, it can provide a positioning reference between adjacent tracks when installing the track and ensure that the two ends of the track provide a parallel reference.

[0018] The utility model further provides that the spacing distance of the positioning markings is 10 mm.

[0019] In the above structure, the longitudinal and width positioning marks divide the mounting plate into several positioning blocks. Based on the spacing distance of the fixing studs as a reference, the cross intersection of the longitudinal and width positioning marks is used as the punching position of the fixing holes, ensuring the accuracy of the punching.

[0020] The utility model further provides that the positioning marking is a concave groove.

[0021] In the above structure, the fixing hole can provide a centering effect when it is drilled; when the track is installed, the fixing screw passes through the middle part of the track, so the concave groove can provide positioning for the screw.

[0022] The beneficial effects of the utility model are as follows: the side of the mounting plate facing the butt-welding boss is separated from the butt-welding boss by a buffer gasket, and the fixing stud is separated from the fixing hole by a radial support tube of the buffer bushing, and the side of the mounting plate facing away from the butt-welding boss is separated from the nut by an axial support disk, thereby avoiding rigid contact with the fixing stud and achieving the buffering purpose; and the electrical components such as contactors, relays, auxiliary contacts, etc. installed above the mounting plate, when working, the movement direction of their armatures, contacts, and other moving parts is often perpendicular to the surface of the mounting plate, and a sound insulation and vibration-absorbing plate is arranged between the mounting plate and the rear side wall, which can effectively absorb the vibration and noise caused by the impact of the moving parts, avoid the occurrence of a drumming effect that causes sound amplification, and effectively isolate the buzzing sound caused by the energization of the electromagnetic coil, thereby reducing the vibration and noise of the distribution cabinet operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0024] Figure 2 Schematic diagram of the three-dimensional structure of the cabinet door opening state of the utility model.

[0025] Figure 3 It is a schematic diagram of the first full profile three-dimensional structure of the utility model.

[0026] Figure 4 It is a schematic diagram of the second full profile three-dimensional structure of the utility model.

[0027] Figure 5 It is a schematic diagram of the three-dimensional structure of the explosion-performing state of the utility model.

[0028] Figure 6 For this utility model Figure 4 Schematic diagram of the enlarged structure of part A.

[0029] The meaning of the numbers in the figure are as follows: 10-cabinet body; 101-left side wall; 102-right side wall; 103-upper side wall; 104-lower side wall; 11-opening; 12-cabinet door; 13-rear side wall; 131-butt welding boss; 132-fixing stud; 133-nut; 20-mounting plate; 21-fixing hole; 22-buffer gasket; 23-buffer bushing; 231-radial support cylinder; 232-axial support plate; 24-positioning mark; a-seismic clearance; b-sound insulation and seismic plate; c-positioning block; d-cross intersection. DETAILED DESCRIPTION

[0030] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0031] refer to Figures 1 to 6 ,like Figures 1 to 6A sound-absorbing and vibration-damping power distribution cabinet shown in the figure comprises a cabinet body 10, an opening 11 is provided in the front of the cabinet body 10, a cabinet door 12 is hinged at the opening 11, a mounting plate 20 is provided on the rear side wall 13 of the inner cavity of the cabinet body 10, the rear side wall 13 is provided with a plurality of butt-welding bosses 131 protruding toward the inner cavity of the cabinet body 10 by stamping, the butt-welding bosses 131 are welded with fixing studs 132, the mounting plate 20 is provided with fixing holes 21 opened corresponding to the fixing studs 132, the fixing holes 21 pass through the fixing studs 132 and fix the mounting plate 20 on the rear side wall 13, the fixing studs 132 are sleeved with a buffer gasket 22 and a buffer bushing 23, the buffer gasket 22 is clamped between the mounting plate 20 and the butt-welding boss The buffer bushing 23 includes a radial support tube 231 located between the inner wall of the fixing hole 21 and the outer wall of the fixing stud 132, and an axial support disk 232 located at one end of the radial support tube 231 away from the butt-welding boss 131. The axial support disk 232 is located on the surface of the mounting plate 20 at one end of the fixing hole 21 away from the butt-welding boss 131. The fixing stud 132 is provided with a nut 133 that abuts against the axial support disk 232 to fix the axial support disk 232, the mounting plate 20, and the buffer gasket 22 to the butt-welding boss 131. The mounting plate 20 and the rear side wall 13 are isolated by the butt-welding boss 131 to form a shock-absorbing gap a, and a sound-proof shock-absorbing plate b is provided in the shock-absorbing gap a.

[0032] In the above structure, the side of the mounting plate 20 facing the butt-welding boss 131 is separated from the butt-welding boss 131 by the buffer gasket 22, and the fixing stud 132 is separated from the fixing hole 21 by the radial support tube 231 of the buffer bushing 23, and the side of the mounting plate 20 facing away from the butt-welding boss 131 is separated from the nut 133 by the axial support disk 232, thereby avoiding rigid contact with the fixing stud 132 and achieving the buffering purpose; and the electrical components such as contactors, relays, auxiliary contacts, etc. installed on the mounting plate 20, when working, the movement direction of their armatures, contacts and other moving parts is often perpendicular to the surface of the mounting plate 20. The sound insulation and vibration-damping plate b is arranged between the mounting plate 20 and the rear side wall 13, which can effectively absorb the vibration and noise caused by the impact of the moving parts, avoid the drumming effect that causes the sound to be amplified, and effectively isolate the buzzing sound caused by the electromagnetic coil being energized, thereby reducing the vibration and noise of the distribution cabinet operation.

[0033] In this embodiment, the left side wall 101 , the right side wall 102 , the upper side wall 103 , and the lower side wall 104 of the inner cavity of the cabinet body 10 are attached with sound insulation and shock-proof plates b.

[0034] In the above structure, the cabinet body 10 is generally formed by bending a metal plate. For some small distribution cabinets, the wall thickness of the cabinet body 10 is also relatively thin, which is prone to deformation and vibration, resulting in poor sound insulation or resonance. Setting sound insulation and vibration-damping plates b on the left side wall 101, the right side wall 102, the upper side wall 103 and the lower side wall 104 can effectively reduce vibration and noise.

[0035] In this embodiment, a sound-insulating shock-resisting plate b is provided on one side of the cabinet door 12 facing the inner cavity of the cabinet body 10 .

[0036] In the above structure, as a moving part, the cabinet door 12 is more likely to generate vibration and noise. The sound insulation vibration-proof plate b can effectively reduce noise from the cabinet door 12.

[0037] In this embodiment, the two sides of the sound-insulating shock-resisting plate b in the shock-resisting gap a are opposite to the mounting plate 20 and the rear side wall 13 , respectively.

[0038] In the above structure, the mounting plate 20 presses the sound insulation and vibration-proofing plate b onto the rear side wall 13 by screwing the nut 133 and the fixing stud 132 together, and the space between the two is tightly filled with the sound insulation and vibration-proofing plate b. At the same time, the vibration-proofing gap a can ensure that when fixing the rail and other components on the mounting plate 20, the screws can smoothly pass through the vibration-proofing gap a, thereby ensuring effective fixation between the screws and the mounting plate 20.

[0039] In this embodiment, the buffer gasket 22 and the buffer bushing 23 are made of silicone or rubber; the axial length of the radial support cylinder 231 is greater than the thickness of the mounting plate 20 .

[0040] In the above structure, the positioning accuracy is taken into consideration when the fixing hole 21 is opened, and its hole diameter is often much larger than the outer diameter of the fixing stud 132, so as to compensate for the positioning accuracy. This results in a large distance between the inner wall of the fixing hole 21 and the outer wall of the fixing stud 132. The axial length of the radial support tube 231 is set to be larger than the thickness of the mounting plate 20. When the nut 133 is tightened, axial pushing can be generated to increase the wall thickness of the radial support tube 231 to fill the gap between the inner wall of the fixing hole 21 and the outer wall of the fixing stud 132.

[0041] In this embodiment, the axial support disc 232 is integrally connected with the radial support cylinder 231 .

[0042] In the above structure, the integrated connection is convenient for installation, and the buffer gasket 22 and the buffer bushing 23 can be installed in a reverse manner.

[0043] In this embodiment, one side of the mounting plate 20 is provided with several positioning markings 24 arranged equidistantly along the length and width directions thereof.

[0044] In the above structure, the positioning mark 24 is used for positioning and distance reference to ensure the relative position accuracy of the spacing between the fixing holes 21; at the same time, it can provide a positioning reference between adjacent rails when installing the rails, and ensure that the two ends of the rails provide parallel references.

[0045] In this embodiment, the distance between the positioning mark 24 is 10 mm.

[0046] In the above structure, the longitudinal and width positioning marks 24 divide the mounting plate 20 into a plurality of positioning blocks c. Based on the spacing distance of the fixing studs 132 as a reference, the cross intersection d of the longitudinal and width positioning marks 24 is used as the punching position of the fixing hole 21, thereby ensuring the accuracy of the punching.

[0047] In this embodiment, the positioning mark 24 is a concave groove.

[0048] In the above structure, the fixing hole 21 can provide a centering effect when it is drilled; when the track is installed, the fixing screw passes through the middle part of the track, so the concave groove can provide positioning for the screw.

[0049] The beneficial effects of the utility model are as follows: the side of the mounting plate 20 facing the butt-welding boss 131 is separated from the butt-welding boss 131 by the buffer gasket 22, and the fixing stud 132 is separated from the fixing hole 21 by the radial support tube 231 of the buffer bushing 23, and the side of the mounting plate 20 facing away from the butt-welding boss 131 is separated from the nut 133 by the axial support disk 232, thereby avoiding rigid contact with the fixing stud 132 and achieving the buffering purpose; and the electrical components such as contactors, relays, auxiliary contacts, etc. installed above the mounting plate 20, when working, the movement direction of their armatures, contacts, and other moving parts is often perpendicular to the surface of the mounting plate 20. The sound insulation and vibration-damping plate b is arranged between the mounting plate 20 and the rear side wall 13, which can effectively absorb the vibration and noise caused by the impact of the moving parts, avoid the drumming effect that causes the sound to be amplified, and effectively isolate the buzzing sound caused by the electromagnetic coil being energized, thereby reducing the vibration and noise of the distribution cabinet operation.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications of the above assumptions should also be regarded as the protection scope of the present invention.

Claims

1. A sound-absorbing and vibration-damping power distribution cabinet, comprising a cabinet body, an opening is provided in the front of the cabinet body, a cabinet door is hinged at the opening, a mounting plate is provided on the rear side wall of the cabinet body cavity, the rear side wall is provided with a plurality of butt-welding bosses protruding toward the cabinet body cavity by stamping, the butt-welding bosses are welded with fixing studs, the mounting plate is provided with fixing holes corresponding to the fixing studs, the fixing holes pass through the fixing studs and fix the mounting plate on the rear side wall, characterized in that: The fixing stud sleeve is provided with a buffer gasket and a buffer bushing, the buffer gasket is clamped between the mounting plate and the butt welding boss, the buffer bushing includes a radial support tube located between the inner wall of the fixing hole and the outer wall of the fixing stud, and an axial support disk located at the end of the radial support tube away from the butt welding boss, the axial support disk is located on the surface of the mounting plate at the end of the fixing hole away from the butt welding boss, the fixing stud is provided with a nut that abuts against the axial support disk, fixing the axial support disk, the mounting plate and the buffer gasket on the butt welding boss; a shock-absorbing gap is formed between the mounting plate and the rear side wall through isolation by the butt welding boss, and a sound-insulating and shock-absorbing plate is provided in the shock-absorbing gap.

2. A sound-absorbing and shock-absorbing power distribution cabinet according to claim 1, characterized in that: The left side wall, the right side wall, the upper side wall and the lower side wall of the cabinet inner cavity are affixed with sound insulation and vibration-damping plates.

3. A sound-absorbing and shock-absorbing power distribution cabinet according to claim 2, characterized in that: A sound-proof and vibration-proof plate is attached to one side of the cabinet door facing the inner cavity of the cabinet.

4. The sound-absorbing and shock-absorbing power distribution cabinet according to claim 1 is characterized in that: The two sides of the sound insulation and vibration-proof plate in the vibration-proof gap are respectively against the mounting plate and the rear side wall.

5. The sound-absorbing and shock-absorbing power distribution cabinet according to claim 1 is characterized in that: The buffer gasket and the buffer bushing are both made of silicone or rubber; the axial length of the radial support tube is greater than the thickness of the mounting plate.

6. A sound-absorbing and vibration-damping distribution cabinet according to claim 1 or 5, characterized in that: The axial support disk is integrally connected with the radial support cylinder.

7. The sound-absorbing and vibration-damping distribution cabinet according to claim 1 is characterized in that: One side of the mounting plate is provided with a plurality of positioning marking lines which are arranged equidistantly along the length and width thereof.

8. The sound-absorbing and vibration-damping distribution cabinet according to claim 7 is characterized in that: The spacing distance between the positioning marks is 10 mm.

9. A sound-absorbing and vibration-damping distribution cabinet according to claim 7 or 8, characterized in that: The positioning mark line is a concave groove.

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