A primary and secondary fusion ring network box with shock absorption function

Abstract

This application relates to a primary and secondary integrated ring main unit with vibration damping function, belonging to the field of electrical equipment technology. It includes a shell with an internal accommodating cavity, a multi-dimensional vibration isolation base disposed on the lower surface of the shell's bottom wall, and the multi-dimensional vibration isolation base comprising sequentially stacked rubber damping pads and elastic legs. A bottom mounting plate is disposed on the inner side of the shell's bottom, connected to the inner surface of the bottom wall via elastic connectors. It also includes a top mounting plate, a composite damping wall panel, and a door with a three-dimensional sealing strip, etc. The elastic connectors and other components have specific structural designs. This application achieves the technical effect of effectively reducing the vibration experienced by the ring main unit, improving the operational stability and reliability of the ring main unit, and reducing the risk of equipment damage and failure caused by vibration.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology, and in particular to a primary and secondary integrated ring main unit with shock absorption function. Background Technology

[0002] In the field of electrical equipment technology, integrated primary and secondary ring main units (RMMs) are important power equipment widely used in power distribution systems such as urban power grids and industrial parks. With the continuous development and upgrading of power systems, higher requirements are placed on the operational reliability, stability, and lifespan of RMMs. During operation, RMMs are subject to various vibrations and noises, such as vibrations from the ground, operational vibrations of internal equipment, and noise interference from the surrounding environment. These factors can adversely affect the normal operation of RMMs; therefore, effectively solving the vibration and noise problems of RMMs has become a key research focus in this field.

[0003] In related technologies, to address the vibration of ring main units, simple rubber pads are typically installed at the bottom of the ring main unit to absorb some of the vibration energy using the elasticity of the rubber; or a single spring damper is used, relying on the extension and contraction of the spring to buffer the vibration.

[0004] However, simple rubber pads and single spring shock absorbers can only provide a certain buffering effect on vibrations of specific frequencies, and cannot achieve wide-band vibration attenuation. They are poorly adaptable to complex vibration environments and cannot effectively isolate environmental vibrations and impacts transmitted from the ground as well as vibrations generated by the operation of internal equipment. Summary of the Invention

[0005] The purpose of this application is to overcome the above-mentioned technical problems and provide a primary and secondary integrated ring main unit with shock absorption function.

[0006] A primary and secondary integrated ring main unit with shock absorption function includes: The housing has an internal cavity for accommodating the ring main unit; A multi-dimensional vibration isolation base is installed on the lower surface of the bottom wall of the housing; The multi-dimensional vibration isolation base includes rubber damping pads and elastic legs stacked sequentially in the vertical direction; A bottom mounting plate is provided on the inner side of the bottom of the housing, and the surface of the bottom mounting plate is connected to the inner surface of the bottom wall of the housing through multiple elastic connectors.

[0007] By adopting the above technical solution, a dual-path vibration isolation foundation architecture with internal and external coordination was constructed. The multi-dimensional vibration isolation base forms a vibration isolation interface on the outside, while the bottom mounting plate and elastic connectors form an elastic suspension inside, realizing dual protection of "external isolation of transmitted vibration and internal suspension of core equipment". This lays a structural foundation for the broadband vibration reduction of the entire system and realizes a leap from single passive vibration reduction to active system protection.

[0008] Optionally, a rigid force transmission plate is sandwiched between the rubber shock-absorbing pad and the elastic leg. The lower surface of the rubber shock-absorbing pad is bonded to the upper surface of the rigid force transmission plate, and the upper surface of the elastic leg is connected to the lower surface of the rigid force transmission plate by screws.

[0009] By adopting the above technical solution, the rigid force transmission plate ensures that the load of the enclosure is evenly distributed to each elastic leg, preventing uneven loading; at the same time, the rubber pad and elastic leg are rigidly connected in series mechanically, forming a path in which vibration must pass through two filters with different characteristics in sequence before it can be transmitted, laying the mechanical foundation for broadband attenuation.

[0010] Optionally, the flexible frame includes a base, the base is connected to a support column by a helical spring, and the end of the support column is provided with a support plate connected to a rigid force transmission plate; the support column is covered with a rubber sleeve, and the rubber sleeve cooperates with the support column and the base plate to form an airtight space.

[0011] By adopting the above technical solutions, a dual-path vibration isolation foundation with internal and external coordination was constructed, realizing the uniform transmission of force and the series connection of two-stage vibration attenuation. This created a composite elastic frame with additional damping and air spring effect, laying the structural foundation for the broadband vibration reduction of the entire system and realizing a leap from single passive vibration reduction to system active protection. It ensures that the load of the box is evenly distributed to each elastic frame, preventing uneven loading. The rubber pads and elastic frames are mechanically rigidly connected in series, forming a path where vibration must pass through two filters with different characteristics in sequence before it can be transmitted, laying the mechanical foundation for broadband attenuation. The helical spring provides the main elasticity and low-frequency vibration isolation, while the rubber sleeve acts as a second elastic body and damper. The sealed air forms additional air spring stiffness when compressed and generates viscous damping when flowing through the gaps. The three work together to give the frame excellent load-bearing, vibration isolation, and energy dissipation capabilities, with dynamic performance far exceeding that of ordinary mechanical springs.

[0012] Optionally, a top mounting plate is fixedly installed on the inner side of the top of the housing. The surface of the top mounting plate is connected to the inner surface of the top wall of the housing through multiple elastic connectors and abuts against the upper surface of the ring main unit.

[0013] By adopting the above technical solutions, a dual-path vibration isolation foundation architecture with internal and external coordination was constructed, laying a structural foundation for the broadband vibration reduction of the entire system and realizing a leap from single passive vibration reduction to active system protection. At the same time, a "full-enclosed" flexible clamping and positioning of the ring main unit was formed, which flexibly fixed the ring main unit in the center of the enclosure from both the top and bottom directions, avoiding rigid contact between the enclosure and the side wall of the enclosure. This not only isolates vibrations in all directions, but also effectively suppresses shaking and swaying caused by internal operation of the enclosure, thus improving stability.

[0014] Optionally, the elastic connector includes a cylinder body, a connecting post slidably disposed within the cylinder body, and a rubber ring fitted onto the outer surface of the cylinder body. A first connecting screw is provided on the outer surface of one end of the cylinder body, and a first buffer groove is provided inside the screw; the first buffer groove is filled with buffer solution; a first adjusting double nut is fitted on the first connecting screw. A second connecting screw is provided on the outer surface of one end of the connecting column, and a piston block is provided on the other end; the piston block extends into the first buffer groove; a second adjusting double nut is sleeved on the second connecting screw. The rubber ring is hollow and is positioned between the first connecting screw and the second connecting screw, abutting against the first connecting screw and the second connecting screw.

[0015] By adopting the above technical solutions, a dual-path vibration isolation foundation architecture with internal and external coordination was constructed, realizing a leap from single passive vibration reduction to active system protection, laying a structural foundation for the broadband vibration reduction of the entire system; a fully enclosed flexible clamping and positioning was formed for the ring main unit, avoiding rigid contact between the cabinet and the side wall of the enclosure, isolating vibrations in all directions, suppressing shaking and swaying caused by internal operation of the cabinet, and improving stability; a multi-functional integrated connection component integrating height adjustment, elastic vibration isolation and hydraulic damping was provided, solving the engineering problem of balancing installation accuracy and dynamic vibration isolation.

[0016] The double nuts allow for precise leveling of the mounting surface, while the hollow rubber ring provides initial elasticity and isolates high-frequency micro-vibrations. The piston's movement in the buffer solution generates powerful hydraulic damping, specifically dissipating significant low-frequency vibration energy. This achieves a balance between installation accuracy and dynamic vibration isolation. It also allows the ring main unit to be "suspended" in the center of the housing, isolating residual vibrations transmitted through the housing and eliminating the direct reaction path of electrodynamic impacts generated during internal operations onto the housing. This provides multi-dimensional and multi-directional vibration reduction for the ring main unit, ensuring its service life.

[0017] Optionally, a second buffer groove is provided inside the connecting column, and a damping hole communicating with the second buffer groove is provided on the piston block. The second buffer groove is in fluid communication with the first buffer groove.

[0018] By adopting the above technical solutions, the flow channel volume and path of the buffer solution are increased, making the liquid flow smoother during piston movement and avoiding sudden changes in damping force. By designing the size of the damping orifice, the strength of damping can be precisely adjusted, making the vibration reduction system more adaptable to vibrations of different amplitudes and improving its working characteristics. The uniform transmission of force and the series connection of two-stage vibration attenuation are realized, ensuring that the load of the housing is evenly distributed to each elastic leg and preventing off-center loading. The rubber pads and elastic legs are mechanically rigidly connected in series, forming a path where vibration must pass through two filters with different characteristics in sequence before it can be transmitted, laying the mechanical foundation for broadband attenuation. A dual-path vibration isolation foundation architecture with internal and external coordination is constructed, with the external isolation of transmitted vibration and the internal suspension of core equipment, laying the structural foundation for broadband vibration reduction of the entire system and realizing a leap from single passive vibration reduction to active system protection.

[0019] Optionally, at least one sidewall of the housing is a composite damping wall panel; the composite damping wall panel includes an outer metal plate, an elastic damping film, and an inner metal plate that are stacked and fixedly connected from the outside to the inside.

[0020] By adopting the above technical solutions, a dual-path vibration isolation foundation with internal and external coordination was constructed, achieving dual protection of externally isolated transmitted vibration and internally suspended core equipment. This lays a structural foundation for the system's broadband vibration reduction and realizes a leap from single passive vibration reduction to system active protection. At the same time, the vibration energy of the enclosure wall panels is actively dissipated through the "structural sound transmission" path. When the wall panels bend and vibrate, the elastic damping film in the middle layer undergoes severe shear deformation, efficiently converting the mechanical energy of vibration into heat energy dissipation, directly reducing the vibration amplitude of the enclosure wall panels themselves, reducing the noise generated as a noise radiation surface, and improving the overall acoustic environment.

[0021] Optionally, a three-dimensional sealing strip is fixedly embedded in the circumferential edge of the enclosure door. When the enclosure door is closed, the three-dimensional sealing strip is compressed between the enclosure door and the door frame; at least one cavity is opened in the three-dimensional sealing strip.

[0022] By adopting the above technical solution, when the door is closed, the three-dimensional sealing strip is compressed, which can achieve a reliable dustproof and waterproof seal; at the same time, the compressed cavity structure becomes a flexible air cushion, which can absorb and attenuate the small impacts and vibrations caused by external vibration or internal sound pressure, and eliminate the "secondary noise" and "short-circuit path" of vibration transmission that may be generated here.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. A dual-path vibration isolation foundation architecture with internal and external coordination was constructed, establishing the fundamental logic of "external isolation of transmitted vibration and internal suspension of core equipment" for dual protection, laying a structural foundation for the broadband vibration reduction of the entire system, and realizing a leap from single passive vibration reduction to system active protection. 2. The multi-dimensional vibration isolation base and elastic connectors enable multi-dimensional attenuation of broadband vibration and multi-directional impact, significantly improving the operational stability and service life of the ring main unit; 3. The composite damping wall panel and three-dimensional sealing strip enhance the vibration reduction and noise reduction capabilities of the enclosure from the "structural sound transmission" and "gap leakage" paths, respectively, creating a protective platform with excellent suppression effects on low-frequency vibrations to high-frequency noises, and solid-borne sound transmission to airborne sound transmission. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this application; Figure 2 This is a structural schematic diagram of the present application, mainly showing the multi-dimensional vibration isolation base and the vibration damping frame; Figure 3 This is a structural schematic diagram of the present application, mainly showing the multi-dimensional vibration isolation base; Figure 4 This is an exploded structural diagram of the flexible leg of this application; Figure 5 This is a structural schematic diagram of the present application, mainly showing the shock-absorbing frame; Figure 6 This is a structural schematic diagram of the present application, mainly illustrating the elastic connector; Figure 7 This is a cross-sectional structural schematic diagram of the elastic connector of this application; Figure 8 This is a structural schematic diagram of the present application, mainly illustrating the composite damping wall panel; Figure 9 This is a cross-sectional structural diagram of the three-dimensional sealing strip of this application.

[0025] Figure Descriptions: 1. Shell; 2. Receiving cavity; 3. Rubber shock-absorbing pad; 301. Elastic layer; 302. Damping layer; 4. Rigid force transmission plate; 5. Elastic bracket; 501. Base; 502. Bearing column; 503. Helical spring; 504. Mounting ring; 505. Mounting platform; 506. Bearing plate; 507. Rubber sleeve; 508. Tightening strap; 6. Mounting groove; 7. Top mounting plate; 8. Bottom mounting plate; 9. Elastic connector; 901. Cylinder; 902. Connecting column; 903. Rubber 904. First connecting screw; 905. First adjusting double nut; 906. Second connecting screw; 907. Second adjusting double nut; 908. Piston block; 909. First abutment ring; 910. Second abutment ring; 10. Snap-fit ​​groove; 11. Rubber strip; 12. First buffer groove; 13. Second buffer groove; 14. Damping hole; 15. Outer metal plate; 16. Elastic damping film; 17. Inner metal plate; 18. First gooseneck groove; 19. Second gooseneck groove; 20. Three-dimensional sealing strip. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1 -Appendix Figure 9 This application will be described in further detail below.

[0027] Example 1: A primary and secondary integrated ring main unit with shock absorption function, referring to Figure 1The system includes a housing 1, with an internal cavity 2 for accommodating the ring main unit. It also includes a multi-dimensional vibration isolation base disposed on the lower surface of the bottom wall of the housing 1 and a vibration damping frame disposed within the housing 1. The multi-dimensional vibration isolation base forms a vibration isolation interface on the outside of the housing 1, achieving broadband vibration attenuation from high to low frequencies while ensuring load-bearing stability. The vibration damping frame is located inside the housing 1, and the ring main unit is installed within it. The housing 1's interior forms a surrounding elastic suspension, effectively isolating the ring main unit from the effects of housing deformation and vibration, preventing the unit from directly contacting the housing wall panels. Through the cooperation of the multi-dimensional vibration isolation base and the vibration damping frame, multi-dimensional and multi-directional vibration damping of the ring main unit is achieved, ensuring its service life.

[0028] Reference Figure 1 , Figure 2 The multi-dimensional vibration isolation base includes rubber damping pads 3, rigid force transmission plates 4, and elastic legs 5 stacked sequentially in the vertical direction. The elastic legs 5 are fixedly connected to the bottom surface of the rigid force transmission plate 4 by screw assembly, and the upper surface of the rigid force transmission plate 4 is bonded to the rubber damping pads 3 by adhesive.

[0029] Reference Figure 2 , Figure 3 The rubber damping pad 3 is a composite layered structure, vertically formed by two rubber layers with different functions through a hot vulcanization process. From top to bottom, it includes an elastic layer 301 and a damping layer 302. The elastic layer 301, made of natural rubber, is located on the upper layer and directly contacts the lower surface of the bottom wall of the housing 1. It absorbs and buffers instantaneous impacts and most of the mid-to-high frequency vibration energy from the housing. The damping layer 302, made of butyl rubber, is located on the lower layer and is bonded to the upper surface of the rigid force transmission plate 4. It converts the mechanical energy of vibration passing through the elastic layer 301 into heat energy and dissipates it, significantly suppressing resonance peaks.

[0030] The rubber shock-absorbing pad 3 has an installation groove 6 at the elastic layer 301. The bottom of the installation groove 6 is integrally formed with a first anti-slip texture, and the outer surface of the bottom wall of the housing 1 is in direct contact with the protective texture. In addition, the side of the rubber shock-absorbing pad 3 is interference-fitted with the outer surface of the housing 1 at the side of the installation groove 6. At the same time, the side wall surface of the installation groove 6 is coated with adhesive and is connected to the surface of the housing 1 through the adhesive to ensure the connection between the two.

[0031] The rigid force transmission plate 4 is made of aluminum alloy and is treated with sandblasting and a special rubber-metal adhesive before vulcanization. The lower surface of the rigid force transmission plate 4 has multiple sets of mating holes for screws to be inserted to connect the elastic legs 5.

[0032] Reference Figure 3 , Figure 4The elastic support 5 includes a base 501, a support column 502 slidably disposed within the base 501, and a coil spring 503 sleeved on the support column 502. The lower surface of the base 501 is integrally formed with a second anti-slip texture, and a clearance groove is formed in the center of its upper surface. One end of the coil spring 503 is fixedly connected to the upper surface of the base 501, and the coil spring 503 is coaxially arranged with the clearance groove.

[0033] The support column 502 is cylindrical, with one end extending into the relief groove and its surface abutting against the inner wall of the relief groove. The other end of the support column 502 has an integrally formed mounting ring 504. A mounting platform 505 is integrally formed on the side of the mounting ring 504 facing the base 501. The surface of the mounting platform 505 facing the base 501 is fixedly connected to the other end of the coil spring 503. Simultaneously, the mounting ring 504 has two sets of pre-drilled annular holes. The mounting ring 504 is fixedly connected to the support plate 506 by screws, with the screws passing through the inner set of pre-drilled holes in the support plate 506, thereby fixing the support plate 506 to the mounting ring 504. Furthermore, the mounting ring 504 has an annular groove at the outer set of pre-drilled holes, which mates with the support plate 506 to form a sealing gap.

[0034] The support column 502 is covered with a rubber sleeve 507. One end of the rubber sleeve 507 is bonded to the periphery of the base 501 by a hot vulcanization process, and the other end of the rubber sleeve 507 extends into the sealing gap and is connected to a pre-set group of holes on the outer side by screws, so that the rubber sleeve 507 extends into the sealing gap. After the rubber sleeve 507 is installed in place, the support column 502 is covered with a tightening strap 508, which presses the rubber sleeve 507 against the surface of the mounting ring 504, so that the rubber sleeve 507, the mounting ring 504, and the base 501 cooperate to form an airtight space.

[0035] The bearing plate 506 has a set of fixing holes, and the fixing holes are distributed outside the preset hole group. At the same time, one fixing hole group corresponds to one of the docking hole groups, so that multiple bearing plates 506 can be installed on the lower surface of the rigid force transmission plate 4, that is, multiple elastic legs 5 can be installed on the lower surface of the rigid force transmission plate 4.

[0036] Reference Figure 2 The shock-absorbing frame includes a top mounting plate 7, a bottom mounting plate 8, and multiple elastic connectors 9. Multiple elastic connectors 9 are fixedly connected to both the top mounting plate 7 and the bottom mounting plate 8. The surface of the top mounting plate 7 is fixedly connected to the inner surface of the top wall of the housing 1 through the elastic connectors 9, and the surface of the bottom mounting plate 8 is fixedly connected to the inner surface of the bottom wall of the housing 1 through the elastic connectors 9.

[0037] Reference Figure 5 , Figure 6Both the top mounting plate 7 and the bottom mounting plate 8 have snap-fit ​​grooves 10 on their adjacent surfaces, and the bottom of both snap-fit ​​grooves 10 is integrally formed with a third anti-slip texture. The upper end of the ring main unit extends into the snap-fit ​​groove 10 of the top mounting plate 7 and abuts against the third anti-slip texture within the snap-fit ​​groove 10. The lower end of the ring main unit extends into the snap-fit ​​groove 10 of the bottom mounting plate 8 and abuts against the third anti-slip texture within the snap-fit ​​groove 10. In addition, a rubber strip 11 is fixedly connected to the side wall of the snap-fit ​​groove 10. The rubber strip 11 has multiple through holes with a honeycomb cross-section. After the ring main unit is installed in place, the side of the rubber strip 11 abuts against the outer surface of the ring main unit, causing the rubber strip 11 to deform and indent.

[0038] Reference Figure 2 , Figure 6 , Figure 7 The elastic connector 9 includes a cylinder 901, a connecting post 902 slidably installed inside the cylinder 901, and a rubber ring 903 sleeved on the outer surface of the cylinder 901.

[0039] A first connecting screw 904 is continuously welded to the outer surface of one end of the cylinder body 901. A first buffer groove 12 is formed inside the cylinder body 901, with the opening of the first buffer groove 12 located away from the first connecting screw 904. A first adjusting double nut 905 is fitted onto the outer surface of the first connecting screw 904. The first connecting screw 904 of the upper elastic connector 9 is threadedly connected to the top mounting plate 7 and fixed to the top mounting plate 7 by the first adjusting nut. The first connecting screw 904 of the lower elastic connector 9 is threadedly connected to the inner surface of the bottom wall of the housing 1 and fixed to the bottom wall of the housing 1 by the first adjusting nut. This arrangement ensures that the opening of the first buffer groove 12 faces upwards.

[0040] A second connecting screw 906 is continuously welded to the outer surface of one end of the connecting column 902. A second buffer groove 13 is formed inside the column, with its opening facing away from the second connecting screw 906. A second adjusting double nut 907 is fitted onto the outer surface of the second connecting screw 906. The second connecting screw 906 of the upper elastic connector 9 is threaded to the top inner surface of the housing 1 and fixed thereto by a first adjusting nut. The second connecting screw 906 of the lower elastic connector 9 is threaded to the bottom bottom surface of the bottom mounting plate 8 and fixed thereto by a first adjusting nut. This arrangement ensures that the opening of the second buffer groove 13 faces downwards.

[0041] The connecting post 902 extends into the first buffer groove 12 of the cylinder body 901, forming an airtight space with the second buffer groove 13, which is filled with buffer solution. A piston block 908 is continuously welded to one end of the connecting post 902 that extends into the first buffer groove 12. A damping hole 14 is formed on the piston block 908, the size of which is smaller than the opening of the second buffer groove 13, allowing fluid communication between the first buffer groove 12 and the second buffer groove 13.

[0042] A first abutment ring 909 is integrally formed on the end of the cylinder body 901 near the first connecting screw 904, and a second abutment ring 910 is integrally formed on the end of the connecting post 902 near the second connecting screw 906. A rubber ring 903 is installed between the first abutment ring 909 and the second abutment ring 910. At least two rubber rings 903 are provided, and both rubber rings 903 are hollow and filled with air.

[0043] The implementation principle of Embodiment 1 of this application is as follows: This embodiment achieves comprehensive vibration protection by constructing a dual vibration reduction system that combines "external isolation" and "internal suspension". Externally, the multi-dimensional vibration isolation base acts as a primary attenuation barrier: the vibration of the shell 1 is first absorbed by the composite rubber vibration damping pad 3, whose high elasticity layer 301 buffers instantaneous impacts and high damping layer 302 dissipates high-frequency energy; the remaining vibration is evenly distributed through the rigid force transmission plate 4 and then transmitted to each elastic leg 5. The helical spring 503 inside the elastic leg 5 provides the main low-frequency vibration isolation, while the "airtight space" enclosed by it, the rubber sleeve 507, and the base 501 forms an additional air spring and damping, further optimizing dynamic performance, thereby effectively isolating environmental vibrations and impacts transmitted from the ground. Internally, a shock-absorbing frame consisting of a top mounting plate 7, a bottom mounting plate 8, and multiple elastic connectors 9 serves as a secondary damping barrier. It flexibly clamps the ring main unit using snap-fit ​​grooves 10 and anti-slip textures, and the elastic connectors 9, which combine hydraulic damping, elastic buffering, and height adjustment functions, "suspend" the entire ring main unit in the center of the housing 1. This design not only isolates residual vibrations transmitted through the housing 1, but more importantly, eliminates the direct reaction path of electrodynamic shocks generated by internal operations of the ring main unit (such as circuit breaker opening and closing) to the housing 1. The coordinated operation of these two systems (internal and external) achieves multi-dimensional attenuation of broadband vibrations and multi-directional impacts, significantly improving the operational stability and service life of the ring main unit.

[0044] Example 2: A primary and secondary integrated ring main unit with shock absorption function, reference Figure 8 , Figure 9 It is based on Example 1 and includes a composite damping wall panel and a three-dimensional sealing strip 20.

[0045] All three sidewalls of the housing 1 are configured as composite damping wall panels. Each composite damping wall panel comprises an outer metal plate 15, an elastic damping sheet 16, and an inner metal plate 17, which are stacked and fixedly connected from the outside to the inside. The outer metal plate 15 has multiple first gooseneck grooves 18 integrally formed in its center, and its periphery is fixed to the surface of the housing 1 by continuous welding. Simultaneously, the elastic damping sheet 16 is attached to the side of the outer metal plate 15 facing the receiving cavity 2 using adhesive. The inner metal plate 17 has multiple second gooseneck grooves 19 integrally formed in its center, matching the first gooseneck grooves 18. The side of the inner metal plate 17 facing away from the receiving cavity 2 is bonded to the elastic damping sheet 16 using adhesive. Simultaneously, the periphery of the inner metal plate 17 is fixed to the surface of the housing 1 by continuous welding.

[0046] A three-dimensional sealing strip 20 is fixedly embedded in the circumferential edge of the door of the housing 1. The three-dimensional sealing strip 20 has two cavities. When the door is closed, the three-dimensional sealing strip 20 is compressed between the door and the door frame, causing the cavities to deform.

[0047] The implementation principle of Embodiment 2 of this application is as follows: Based on the excellent vibration isolation provided in Embodiment 1, this embodiment further enhances the vibration reduction and noise reduction capabilities of the entire enclosure through two paths: "structural sound transmission" and "gap leakage". First, the composite damping wall panel applies the "constraint layer damping" mechanism: when the enclosure wall panel bends and deforms due to sound pressure or vibration, the elastic damping film 16, which is firmly constrained between the two metal plates, will undergo severe shear deformation, thereby efficiently converting vibration energy into heat dissipation. This significantly reduces the vibration amplitude of the enclosure wall panel itself (i.e., "structural sound"), reduces the noise generated by the enclosure as a sound radiation surface, and also weakens the transmission of vibration through the side wall of the enclosure. Second, the three-dimensional sealing strip 20 with a double cavity structure is compressed when the enclosure door is closed. Its cavity deformation not only provides excellent sealing performance, but more importantly, it forms a flexible "sound and vibration buffer interface", which can effectively absorb and attenuate the small impact energy generated by the vibration of the enclosure door relative to the door frame, prevent it from generating secondary noise, and further improve the overall structural airtightness and dynamic stability. These features of Example 2 complement the core vibration reduction system of Example 1, together making the ring main unit a "silent" advanced protection platform with excellent suppression effects from low-frequency vibration to high-frequency noise, and from solid-borne sound to airborne sound.

[0048] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be included within the scope of protection of this application.

Claims

1. A primary and secondary fusion ring network box with shock absorption function, characterized in that, include: The housing (1) has an internal cavity (2) for accommodating the ring main unit; A multi-dimensional vibration isolation base is disposed on the lower surface of the bottom wall of the housing (1); The multidimensional vibration isolation base includes rubber damping pads (3) and elastic legs (5) stacked in sequence in the vertical direction; A bottom mounting plate (8) is provided on the inner side of the bottom of the housing (1), and the surface of the bottom mounting plate (8) is connected to the inner surface of the bottom wall of the housing (1) through multiple elastic connectors (9).

2. The primary and secondary integrated ring main unit with shock absorption function according to claim 1, characterized in that, A rigid force transmission plate (4) is sandwiched between the rubber shock-absorbing pad (3) and the elastic leg (5). The lower surface of the rubber shock-absorbing pad (3) is bonded to the upper surface of the rigid force transmission plate (4). The upper surface of the elastic leg (5) is connected to the lower surface of the rigid force transmission plate (4) by screws.

3. A primary and secondary integrated ring main unit with shock absorption function according to claim 2, characterized in that, The elastic support (5) includes a base (501), the base (501) is connected to a support column (502) by a helical spring (503), and the end of the support column (502) is provided with a support plate (506) connected to the rigid force transmission plate (4); the support column (502) is covered with a rubber sleeve (507), and the rubber sleeve (507) cooperates with the support column (502) and the base plate to form an airtight space.

4. A primary and secondary integrated ring main unit with shock absorption function according to claim 1, characterized in that, A top mounting plate (7) is fixedly installed on the inner side of the top of the housing (1). The surface of the top mounting plate (7) is connected to the inner surface of the top wall of the housing (1) through multiple elastic connectors (9) and abuts against the upper surface of the ring main unit.

5. A primary and secondary integrated ring main unit with shock absorption function according to claim 4, characterized in that, The elastic connector (9) includes a cylinder (901), a connecting post (902) slidably disposed in the cylinder (901), and a rubber ring (903) sleeved on the outer surface of the cylinder (901); The cylinder body (901) has a first connecting screw (904) on one end of its outer surface, and a first buffer groove (12) is provided inside it; the first buffer groove (12) is filled with buffer solution; and a first adjusting double nut (905) is sleeved on the first connecting screw (904). The connecting post (902) has a second connecting screw (906) on one end of its outer surface and a piston block (908) on the other end; the piston block (908) extends into the first buffer groove (12); a second adjusting double nut (907) is fitted on the second connecting screw (906). The rubber ring (903) is hollow and is disposed between the first connecting screw (904) and the second connecting screw (906), and abuts against the first connecting screw (904) and the second connecting screw (906).

6. A primary and secondary integrated ring main unit with shock absorption function according to claim 5, characterized in that, The connecting column (902) has a second buffer groove (13) inside, and the piston block (908) has a damping hole (14) communicating with the second buffer groove (13). The second buffer groove (13) is in fluid communication with the first buffer groove (12).

7. A primary and secondary integrated ring main unit with shock absorption function according to claim 1, characterized in that, At least one sidewall of the housing (1) is a composite damping wall panel; the composite damping wall panel includes an outer metal plate (15), an elastic damping film (16), and an inner metal plate (17) that are stacked and fixedly connected from the outside to the inside.

8. A primary and secondary integrated ring main unit with shock absorption function according to claim 1, characterized in that, The circumferential edge of the door of the housing (1) is fixedly fitted with a three-dimensional sealing strip (20). When the door is closed, the three-dimensional sealing strip (20) is compressed between the door and the door frame. At least one cavity is opened in the three-dimensional sealing strip (20).

Images