Outdoor cabinet structure suitable for high-vibration environment and damping method

Abstract

This invention discloses an outdoor cabinet structure suitable for high-vibration environments, comprising: a composite cabinet, including an outer shell and an inner shell, the inner shell being a frame structure; shock-absorbing cotton being disposed between the outer shell and the inner shell, the shock-absorbing cotton filling the frame gaps of the inner shell and being compressed and sandwiched between the inner shell and the outer shell; the inner shell and the outer shell being fixedly connected by fasteners passing through the shock-absorbing cotton; and a shock-absorbing chassis, connected between the composite cabinet and the mounting platform, having adjustable mounting shock-absorbing support columns, and the adjustable mounting shock-absorbing support columns and... The shock-absorbing chassis is threaded and height-adjustable, with shock-absorbing pads at its lower end; L-shaped feet are mounted on the shock-absorbing chassis and have waist-shaped adjustment holes, allowing adjustable shock-absorbing support columns to connect to the L-shaped feet via the waist-shaped adjustment holes and adjust their horizontal position along the waist-shaped adjustment holes; a disc damper includes a housing and a rotating shaft, with the housing fixedly connected to the shock-absorbing chassis and the rotating shaft connected to a fixed shaft at the bottom of the composite cabinet, generating a damping torque opposite to the direction of rotation when the rotating shaft rotates within the housing.

Description

Technical Field

[0001] This invention relates to a cabinet structure and a vibration reduction method, and more particularly to an outdoor cabinet structure and a vibration reduction method suitable for high-vibration environments. Background Technology

[0002] Outdoor electrical cabinets are widely used in communication base stations, substations, rail transit, and shipping to provide physical and environmental protection for internal electrical equipment. Existing outdoor electrical cabinets are mostly used in fixed sites (such as base stations and substations), and their structural design focuses on dust and water protection and heat dissipation, but they do not adequately consider continuous mechanical vibration (such as the bumps and swaying of vehicles and ships).

[0003] Traditional outdoor cabinets typically employ the following structure: the cabinet body is constructed from a single layer of sheet metal, bent and welded together. Internal components are directly fixed to the sheet metal frame with screws, and a single-layer sealing strip is used between the cabinet door and the cabinet body to achieve a static seal. This structure can meet basic protection requirements in a fixed installation environment, but it has the following drawbacks under high vibration conditions: First, the structural reliability is poor. Rigidly connected cabinets and internal supports are prone to problems such as loose bolts, cracked welds, and detached connectors under long-term vibration, leading to equipment failure and even safety accidents. This is especially true for mobile platforms such as vehicle-mounted and ship-mounted systems, which experience a wide range of vibration frequencies and large amplitudes, posing a severe challenge to the fatigue life of the structure.

[0004] Secondly, sealing performance deteriorates. Traditional static sealing relies on the compression and deformation of the sealing strip to achieve a seal. However, under continuous vibration, momentary gaps may appear between the cabinet door and the cabinet body, allowing moisture, dust, salt spray, etc., to penetrate into the cabinet, causing corrosion and short circuits in electrical components. Using thicker sealing strips or increasing locking force to improve sealing performance would increase the difficulty of opening the cabinet door and would not fundamentally solve the problem of dynamic gaps caused by vibration.

[0005] Third, there is a significant conflict between heat dissipation and sealing. Completely sealing the cabinet to improve sealing performance will cause excessive internal temperature rise, affecting the lifespan of electronic components; on the other hand, opening ventilation openings for heat dissipation will reduce the protection level and fail to meet the requirements for use in high humidity and high salt spray environments.

[0006] Fourth, poor installation adaptability. Traditional cabinet bases are mostly fixed structures, which cannot adapt to uneven installation platforms. Under dynamic conditions, they are prone to additional stress and resonance, accelerating structural fatigue.

[0007] To address the aforementioned issues, some improvements have been implemented in existing technologies, such as adding rubber damping pads and using double-layer cabinets. However, these solutions are mostly single-dimensional improvements and fail to solve the multiple technical challenges in high-vibration environments at the system level. For example, simply adding damping pads can only attenuate vibrations in some directions and cannot suppress horizontal swaying and torsion; while double-layer cabinets can provide some vibration reduction, the rigid connection between the inner and outer shells still transmits vibrations; and regarding dynamic sealing, there is currently no effective active sealing solution to address the problem of water leakage through gaps caused by vibration.

[0008] Therefore, there is an urgent need for a new type of outdoor cabinet structure that combines vibration resistance, sealing, and heat dissipation to meet the usage requirements of high vibration, high humidity, and high salt spray environments such as vehicle and shipboard applications. Summary of the Invention

[0009] To address the shortcomings of the aforementioned technologies, this invention provides an outdoor cabinet structure and vibration reduction method suitable for high-vibration environments.

[0010] To solve the above technical problems, the technical solution adopted by the present invention is: an outdoor cabinet structure suitable for high-vibration environments, comprising: The composite cabinet includes an outer shell and an inner shell. The inner shell has a frame structure. Shock-absorbing cotton is installed between the outer shell and the inner shell. The shock-absorbing cotton is filled in the frame gaps of the inner shell and compressed and sandwiched between the inner shell and the outer shell. The inner shell and the outer shell are fixedly connected by fasteners that pass through the shock-absorbing cotton. The shock-absorbing chassis is connected between the composite cabinet and the installation platform. It has adjustable installation shock-absorbing support columns, which are threadedly connected to the shock-absorbing chassis and can be adjusted up and down. The lower end of the chassis is equipped with shock-absorbing pads. The L-shaped foot support is set on the shock-absorbing chassis and has a waist-shaped adjustment hole. The adjustable shock-absorbing support column is connected to the L-shaped foot support through the waist-shaped adjustment hole, and its horizontal position can be adjusted along the waist-shaped adjustment hole. The disc damper includes a housing and a rotating shaft. The housing is fixedly connected to the shock-absorbing chassis, and the rotating shaft is connected to a fixed shaft set at the bottom of the composite cabinet. When the rotating shaft rotates inside the housing, it generates a damping torque in the opposite direction of rotation.

[0011] Furthermore, it also includes a dynamic sealing assembly, which has: The main sealing strip is installed between the cabinet door and the cabinet body and is compressed when the cabinet door is closed to achieve a static seal; The detection device includes a pressure sensor for monitoring the air pressure inside the cabinet and a humidity sensor for monitoring humidity. A pressurization device is installed on the cabinet to increase the air pressure inside the cabinet; The controller is electrically connected to the detection device and the pressurization device respectively. When the detection device detects that the air pressure drops beyond the set range or the humidity rises beyond the set rate, the controller controls the pressurization device to start to increase the air pressure inside the cabinet, so that the air pressure inside the cabinet is higher than the external atmospheric pressure.

[0012] Furthermore, multiple adjustable mounting shock absorber support columns are provided and distributed around the shock absorber chassis. The height of each adjustable mounting shock absorber support column and the horizontal position of the L-shaped foot support waist-shaped adjustment hole can be adjusted separately.

[0013] Furthermore, the shock-absorbing cotton between the inner and outer shells of the composite cabinet forms a heat insulation layer, slowing down the heat exchange between the inside and outside of the cabinet.

[0014] Furthermore, the inner shell of the composite cabinet is connected to the shock-absorbing chassis through a disc damper. The preload generated by the compression of the shock-absorbing cotton and the damping torque of the disc damper work together on the inner shell.

[0015] Furthermore, it also includes an internal shock-absorbing bracket, inside which is an electrical box for integrating and installing electrical functional modules; the internal shock-absorbing bracket is connected between the electrical box and the inner shell through a secondary shock-absorbing damper; shock-absorbing pads are provided between the contact surfaces of the electrical box and the inner shell.

[0016] A vibration reduction method for outdoor cabinet structures suitable for high-vibration environments, the vibration reduction method includes a first-stage vibration reduction: Multiple adjustable mounting shock-absorbing support columns distributed around the shock-absorbing chassis absorb axial vibrations from the mounting platform; The L-shaped foot support's waist-shaped adjustment hole adjusts the horizontal position of the adjustable installation shock-absorbing support column, creating a rigid compensation connection between the composite cabinet and the installation platform without relative sliding. The rotating shaft of the disc damper rotates within the housing, generating a damping torque in the opposite direction of rotation, which absorbs horizontal oscillations and torsional vibrations around the axial direction from the mounting platform. The adjustable mounting damping support column and the disc damper work together to form the first stage of attenuation for vibrations transmitted from the mounting platform.

[0017] Furthermore, it also includes a second level of shock absorption: The residual vibration after the first stage of attenuation is transmitted to the composite cabinet. The pre-tightening force generated by the compression of the shock-absorbing cotton between the outer shell and the inner shell absorbs the mid-frequency vibration after the first stage of attenuation. The shock-absorbing cotton also serves as a heat insulation layer, slowing down the heat exchange between the inside and outside of the cabinet, thus achieving the combined effect of shock absorption and heat insulation. The inner shell and the outer shell are fixedly connected by fasteners that pass through the shock-absorbing cotton, so that the inner shell can simultaneously obtain elastic support from the shock-absorbing cotton and rigid constraint from the fasteners when subjected to vibration.

[0018] Furthermore, the third stage of vibration reduction: An internal shock-absorbing bracket is provided, which is installed on the inner shell of the composite cabinet. Through a secondary shock-absorbing damper connected between the electrical box and the inner shell, the high-frequency micro-amplitude vibrations after being attenuated by the first two stages are absorbed. The shock-absorbing pads placed between the electrical box and the inner housing prevent rigid collisions between the electrical box and the inner housing.

[0019] Furthermore, the first-stage vibration damping step, the second-stage vibration damping step, and the third-stage vibration damping step are connected in series to form a complete vibration damping path from the installation platform to the core electrical functional module: The first stage of vibration reduction is performed by the vibration-damping chassis, which absorbs low-frequency large-amplitude vibrations from the installation platform and cuts off the main path of vibration transmission to the cabinet. The second-stage vibration reduction step is performed by the composite cabinet, which absorbs the mid-frequency vibration after the first-stage attenuation and isolates the effect of the outer shell deformation on the inner shell. The third-stage damping step is performed by the internal damping bracket, absorbing the high-frequency micro-amplitude vibrations that have been attenuated by the first two stages.

[0020] This invention discloses an outdoor cabinet structure and vibration reduction method suitable for high-vibration environments. Compared with the prior art, this invention has the following advantages: Multi-stage vibration reduction ensures structural reliability. The three-stage progressive vibration reduction system, consisting of a vibration-damping chassis, a composite cabinet, and internal vibration-damping supports, gradually attenuates vibrations transmitted from the installation platform, effectively solving structural failure problems such as loose bolts, cracked welds, and detached connectors under high vibration environments.

[0021] Multi-dimensional adjustment and good adaptability; the adjustable installation shock-absorbing support column, together with the waist-shaped adjustment hole of the L-shaped foot support, can realize adjustment in three directions: X, Y and Z, so that the cabinet maintains the height consistency with the installation platform under the condition of movement, and prevents relative sliding and resonance.

[0022] Intelligent sealing provides strong protection; the dynamic sealing component monitors the cabinet's internal status in real time through air pressure and humidity sensors. When the primary seal fails, it actively increases pressure to create internal positive pressure, effectively preventing water seepage caused by vibration and achieving active dust and water protection.

[0023] Thermal insulation works synergistically for superior thermal management; the shock-absorbing cotton also serves as thermal insulation, and together with the active pressurization system, it promotes the discharge of hot air, effectively solving the problem of excessive temperature rise inside traditional sealed cabinets.

[0024] Modular design for easy maintenance; internal shock-absorbing brackets integrate core electrical components into an independent electrical box for easy maintenance and replacement, while the electrical box provides electromagnetic shielding. Attached Figure Description

[0025] Figure 1 Schematic diagram of three-dimensional structure Figure 1 .

[0026] Figure 2 This is a schematic view of a partial structure.

[0027] Figure 3 This is a schematic diagram of the structure of the shock-absorbing chassis.

[0028] Figure 4 Schematic diagram of three-dimensional structure Figure 2 .

[0029] Figure 5 This is a schematic diagram of the dynamic sealing assembly.

[0030] Figure 6 This is the front view of the internal shock-absorbing bracket.

[0031] In the diagram: 100, composite cabinet; 110, outer shell; 120, inner shell; 130, shock-absorbing cotton; 200, shock-absorbing chassis; 210, adjustable mounting shock-absorbing support column; 220, L-shaped foot support; 221, waist-shaped adjustment hole; 230, disc damper; 231, shell; 232, rotating shaft; 310, main sealing strip; 320, detection device; 330, pressurization device; 340, controller; 410, electrical box; 420, secondary shock-absorbing damper; 430, shock-absorbing pad. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0033] An outdoor cabinet structure suitable for high-vibration environments includes a composite cabinet 100, a shock-absorbing chassis 200, a dynamic sealing assembly, and an internal shock-absorbing support.

[0034] like Figure 1 As shown, the composite cabinet 100 includes an outer shell 110 and an inner shell 120; the outer shell 110 is made of high-strength aluminum alloy or stainless steel, and the surface is treated with anti-corrosion, making it suitable for outdoor high-corrosion environments; the inner shell 120 is a frame structure made of carbon fiber reinforced composite material, which has high strength and high rigidity.

[0035] A shock-absorbing cotton 130 is provided between the outer shell 110 and the inner shell 120. Specifically, the inner shell 120 has a frame structure with multiple gaps formed within its frame. The shock-absorbing cotton 130 fills the gaps in the frame of the inner shell 120 and is compressed and sandwiched between the inner shell 120 and the outer shell 110. The inner shell 120 and the outer shell 110 are fixedly connected by fasteners passing through the shock-absorbing cotton 130. The fasteners can be bolts, screws, or rivets.

[0036] Therefore, in this structural design, the pre-tightening force generated after the shock-absorbing cotton 130 is compressed creates an elastic connection between the inner shell 120 and the outer shell 110. At the same time, the fasteners provide rigid constraints. The two work together to ensure that the inner shell 120 can obtain elastic support when subjected to vibration, without experiencing excessive relative displacement.

[0037] like Figure 2 As shown, the shock-absorbing chassis 200 is connected between the composite cabinet 100 and the installation platform to absorb and attenuate vibrations from the installation platform.

[0038] The shock-absorbing chassis 200 has an adjustable mounting shock-absorbing support column 210; the adjustable mounting shock-absorbing support column 210 is threadedly connected to the shock-absorbing chassis 200, and its height can be adjusted by rotation. The lower end of the adjustable mounting shock-absorbing support column 210 is provided with a shock-absorbing pad, which is made of elastic materials such as EVA or rubber, and is used to absorb axial vibration.

[0039] The shock-absorbing chassis 200 is equipped with L-shaped feet 220; the L-shaped feet 220 have waist-shaped adjustment holes 221; the adjustable mounting shock-absorbing support column 210 passes through the waist-shaped adjustment holes 221 and connects to the L-shaped feet 220, and its horizontal position (X and Y directions) can be adjusted along the waist-shaped adjustment holes 221. This structure allows the horizontal position of the adjustable mounting shock-absorbing support column 210 to be finely adjusted according to the actual situation of the mounting platform, ensuring the alignment of the cabinet and the mounting platform.

[0040] like Figure 2 As shown, multiple adjustable mounting shock-absorbing support columns 210 are provided and distributed around the four corners of the shock-absorbing chassis 200. By adjusting the height of each adjustable mounting shock-absorbing support column 210 and the horizontal position of the waist-shaped adjustment hole 221 of the L-shaped foot support 220, the relative position of the composite cabinet 100 with respect to the mounting platform in six degrees of freedom can be adjusted, so that the composite cabinet 100 maintains the same height and relative stability with the mounting platform under motion conditions, preventing relative sliding and resonance.

[0041] like Figure 3 As shown, the shock-absorbing chassis 200 also includes a disc damper 230. The disc damper 230 includes a housing 231 and a rotating shaft 232. The housing 231 is fixedly connected to the shock-absorbing chassis 200 by bolts. The rotating shaft 232 is connected to a fixed shaft provided at the bottom of the composite cabinet 100. Specifically, the rotating shaft 232 is connected to the fixed shaft by a locating pin and locked with a set screw.

[0042] When the rotating shaft 232 rotates within the housing 231, it generates a damping torque opposite to the direction of rotation. In one specific embodiment, the housing 231 is filled with high-viscosity silicone oil, and the rotating shaft 232 is connected to blades that rotate within the silicone oil. When the composite cabinet 100 is subjected to horizontal vibration or axial torsional vibration, the fixed shaft drives the rotating shaft 232 to rotate, and the blades moving within the silicone oil generate a damping torque, absorbing vibration energy and effectively suppressing the swaying and torsion of the cabinet.

[0043] The inner shell 120 of the composite cabinet 100 is connected to the shock-absorbing chassis 200 via a disc damper 230. The preload generated by the compression of the damping cotton 130 and the damping torque of the disc damper 230 work together on the inner shell 120. This combined action allows the inner shell 120 to simultaneously receive elastic support from the damping cotton 130 and rotational constraint from the disc damper 230 when subjected to external impact, effectively suppressing the multi-directional displacement of the inner shell 120 relative to the outer shell 110.

[0044] like Figure 5 As shown, the dynamic sealing assembly includes a main sealing strip 310, a detection device 320, a pressurizing device 330, and a controller 340.

[0045] The main sealing strip 310 is installed between the cabinet door and the cabinet body and is made of weather-resistant EPDM material. When the cabinet door is closed, the main sealing strip 310 is compressed to achieve a static seal, preventing moisture and dust from entering the cabinet interior.

[0046] The detection device 320 includes a pressure sensor and a humidity sensor for monitoring the air pressure and humidity inside the cabinet. The pressure sensor converts the air pressure signal into an electrical signal output, and the humidity sensor is a capacitive humidity sensor that measures the humidity content by utilizing the change in capacitance of the material under different humidity levels. The detection device 320 is encapsulated inside a monitoring unit and fixed to the top of the cabinet by a bracket.

[0047] A pressurization device 330 is mounted on the cabinet to increase the internal air pressure. In one specific embodiment, the pressurization device 330 is a turbine fan, which contains a turbine fan and a motor, and its outlet is connected to the inside of the cabinet via a pipe. The pressurization device 330 is fixed to the top of the cabinet by a bracket.

[0048] The controller 340 is electrically connected to the detection device 320 and the pressurization device 330 respectively. When the detection device 320 detects that the air pressure drops beyond the set range or the humidity rises beyond the set rate, the controller 340 determines that the primary seal may have failed and controls the pressurization device 330 to start, increasing the air pressure in the cabinet cavity so that the air pressure inside the cabinet is higher than the external atmospheric pressure.

[0049] Its dynamic sealing works by the fact that when the cabinet is in a high-vibration environment, the main sealing strip 310 may develop a momentary gap due to vibration, causing the seal to fail. At this time, by actively increasing the air pressure inside the cabinet, a positive internal pressure is formed, which allows the air inside the cabinet to seep out through the tiny gaps, while external dust, water vapor, and salt spray are blocked by this outward airflow and cannot enter the cabinet, thus achieving active dust and water protection.

[0050] The detection device 320 can also be connected to an acceleration sensor. When the cabinet acceleration is detected to exceed the threshold (e.g., 0.5g), the controller 340 predicts that the main sealing strip 310 may develop a gap and starts the pressurization device 330 in advance to establish positive pressure inside the cabinet, thereby achieving pre-pressurization protection before vibration.

[0051] like Figure 4 and Figure 6 As shown, the internal shock-absorbing bracket is installed on the inner shell 120 of the composite cabinet 100 and is used to install important electrical functional modules such as power modules and control modules.

[0052] The internal shock-absorbing bracket includes an electrical box 410, a secondary shock-absorbing damper 420, and a shock-absorbing pad 430.

[0053] Electrical box 410 is an independent enclosure with internal guide rails and mounting posts for the integrated installation of electrical functional modules. Electrical box 410 is made of metal and has a certain degree of electromagnetic shielding.

[0054] The secondary damper 420 is connected between the electrical box 410 and the inner housing 120. A damping pad 430 is disposed between the contact surfaces of the electrical box 410 and the inner housing 120. The damping pad 430 is made of an elastic material (such as silicone foam) and is compressed after the electrical box 410 is installed.

[0055] In a preferred embodiment, such as Figure 3 As shown, a damping pad 430 is provided between the bottom of the electrical box 410 and the inner shell 120. The side of the electrical box 410 is connected to the inner shell 120 through at least one secondary damping device 420, so that the electrical box 410 is elastically constrained in both the vertical and horizontal directions. This multi-point elastic constraint design allows the electrical box 410 to produce controlled micro-displacement when vibrating, converting vibration energy into heat energy for dissipation, effectively protecting the internal electrical components.

[0056] It should be understood that the outdoor cabinet structure of the present invention constitutes a three-level progressive shock absorption system through the shock-absorbing chassis 200, the composite cabinet 100, and the internal shock-absorbing support: The first stage of vibration damping is performed by the vibration damping chassis 200. The adjustable mounting vibration damping support column 210 absorbs low-frequency large-amplitude axial (Z-direction) vibrations from the mounting platform; the disc damper 230 absorbs horizontal (X / Y-direction) oscillations and torsional vibrations around the axis; together, they constitute the first stage of attenuation of vibrations transmitted from the mounting platform, cutting off the main path of vibration transmission to the cabinet.

[0057] The second stage of vibration damping is performed by the composite cabinet 100. The residual vibrations after the first stage of damping are transmitted to the composite cabinet 100. The pre-tension force generated by the compression of the damping cotton 130 between the outer shell 110 and the inner shell 120 absorbs the mid-frequency vibrations after the first stage of damping. Simultaneously, the damping cotton 130 acts as a heat insulation layer, slowing down heat exchange between the inside and outside of the cabinet, achieving a synergistic effect of vibration damping and heat insulation.

[0058] The third stage of vibration damping is performed by the internal vibration damping bracket. The high-frequency micro-amplitude vibrations attenuated by the first two stages are transmitted to the inner housing 120. The high-frequency micro-amplitude vibrations are absorbed by the secondary vibration damper 420 connected between the electrical box 410 and the inner housing 120. The vibration damping pads 430 set between the contact surfaces of the electrical box 410 and the inner housing 120 prevent rigid collisions between the electrical box 410 and the inner housing 120.

[0059] The three-stage vibration damping system is connected in series along the path of the installation platform, the vibration damping chassis 200, the composite cabinet 100, the internal vibration damping support, and the electrical functional modules, forming a progressive attenuation of vibration. The first stage of vibration damping absorbs low-frequency large-amplitude vibrations, the second stage absorbs mid-frequency vibrations, and the third stage absorbs high-frequency small-amplitude vibrations. The natural frequencies of the three stages of vibration damping increase sequentially, forming a wide-band vibration damping system with staggered frequency bands. This system achieves comprehensive isolation of vibrations of different frequencies and amplitudes, ultimately minimizing the vibration impact on the core electrical functional modules.

[0060] Compared with the prior art, the present invention has the following beneficial effects: Multi-stage vibration reduction ensures structural reliability. The three-stage progressive vibration reduction system, consisting of a vibration-damping chassis, a composite cabinet, and internal vibration-damping supports, gradually attenuates vibrations transmitted from the installation platform, effectively solving structural failure problems such as loose bolts, cracked welds, and detached connectors under high vibration environments.

[0061] Multi-dimensional adjustment and good adaptability; the adjustable installation shock-absorbing support column, together with the waist-shaped adjustment hole of the L-shaped foot support, can realize adjustment in three directions: X, Y and Z, so that the cabinet maintains the height consistency with the installation platform under the condition of movement, and prevents relative sliding and resonance.

[0062] Intelligent sealing provides strong protection; the dynamic sealing component monitors the cabinet's internal status in real time through air pressure and humidity sensors. When the primary seal fails, it actively increases pressure to create internal positive pressure, effectively preventing water seepage caused by vibration and achieving active dust and water protection.

[0063] Thermal insulation works synergistically for superior thermal management; the shock-absorbing cotton also serves as thermal insulation, and together with the active pressurization system, it promotes the discharge of hot air, effectively solving the problem of excessive temperature rise inside traditional sealed cabinets.

[0064] Modular design for easy maintenance; internal shock-absorbing brackets integrate core electrical components into an independent electrical box for easy maintenance and replacement, while the electrical box provides electromagnetic shielding.

[0065] The above embodiments are not intended to limit the present invention, and the present invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the technical solution of the present invention are also within the protection scope of the present invention.

Claims

1. An outdoor cabinet structure suitable for high-vibration environments, characterized in that, include: A composite cabinet includes an outer shell and an inner shell. The inner shell has a frame structure. Shock-absorbing cotton is provided between the outer shell and the inner shell. The shock-absorbing cotton is filled in the frame gaps of the inner shell and compressed and sandwiched between the inner shell and the outer shell. The inner shell and the outer shell are fixedly connected by fasteners passing through the shock-absorbing cotton. The shock-absorbing chassis is connected between the composite cabinet and the installation platform. It has an adjustable installation shock-absorbing support column. The adjustable installation shock-absorbing support column is threadedly connected to the shock-absorbing chassis and can be adjusted up and down. Its lower end is provided with shock-absorbing pads. The L-shaped foot support is mounted on the shock-absorbing chassis and has a waist-shaped adjustment hole. The adjustable mounting shock-absorbing support column is connected to the L-shaped foot support through the waist-shaped adjustment hole and can be adjusted in the horizontal direction along the waist-shaped adjustment hole. A disc damper includes a housing and a rotating shaft. The housing is fixedly connected to a shock-absorbing chassis, and the rotating shaft is connected to a fixed shaft at the bottom of a composite cabinet. When the rotating shaft rotates within the housing, it generates a damping torque in the opposite direction to the rotation.

2. The outdoor cabinet structure suitable for high-vibration environments according to claim 1, characterized in that, It also includes a dynamic sealing assembly, which has: The main sealing strip is installed between the cabinet door and the cabinet body and is compressed when the cabinet door is closed to achieve a static seal; The detection device includes a pressure sensor for monitoring the air pressure inside the cabinet and a humidity sensor for monitoring humidity. A pressurization device is installed on the cabinet to increase the air pressure inside the cabinet; The controller is electrically connected to the detection device and the pressurization device respectively. When the detection device detects that the air pressure drops beyond the set range or the humidity rises beyond the set rate, the controller controls the pressurization device to start to increase the air pressure inside the cabinet, so that the air pressure inside the cabinet is higher than the external atmospheric pressure.

3. The outdoor cabinet structure suitable for high-vibration environments according to claim 1, characterized in that, Multiple adjustable mounting shock-absorbing support columns are provided and distributed around the shock-absorbing chassis. The height of each adjustable mounting shock-absorbing support column and the horizontal position of the L-shaped foot support waist-shaped adjustment hole can be adjusted respectively.

4. The outdoor cabinet structure suitable for high-vibration environments according to claim 1, characterized in that, The shock-absorbing cotton between the inner and outer shells of the composite cabinet forms a heat insulation layer, slowing down the heat exchange between the inside and outside of the cabinet.

5. The outdoor cabinet structure suitable for high-vibration environments according to claim 1, characterized in that, The inner shell of the composite cabinet is connected to the shock-absorbing chassis through the disc damper. The pre-tightening force generated after the shock-absorbing cotton is compressed and the damping torque of the disc damper work together on the inner shell.

6. The outdoor cabinet structure suitable for high vibration environments according to claim 1, characterized in that, It also includes the internal shock-absorbing bracket, which houses an electrical box for integrating and installing electrical functional modules; the internal shock-absorbing bracket is connected between the electrical box and the inner shell via a secondary shock-absorbing damper; shock-absorbing pads are provided between the contact surfaces of the electrical box and the inner shell.

7. A vibration reduction method for outdoor cabinet structures suitable for high-vibration environments according to any one of claims 1-6, characterized in that, The vibration reduction method includes a first-stage vibration reduction: Multiple adjustable mounting shock-absorbing support columns distributed around the shock-absorbing chassis absorb axial vibrations from the mounting platform; The waist-shaped adjustment hole of the L-shaped foot support adjusts the horizontal position of the adjustable installation shock-absorbing support column, so that a rigid compensation connection without relative sliding is formed between the composite cabinet and the installation platform. The rotating shaft of the disc damper rotates within the housing to generate a damping torque in the opposite direction of rotation, absorbing horizontal oscillations and torsional vibrations around the axial direction from the mounting platform. The adjustable mounting damping support column and the disc damper work together to form the first stage of attenuation for vibrations transmitted from the mounting platform.

8. The outdoor cabinet structure suitable for high-vibration environments according to claim 7, characterized in that, The system also includes a second stage of shock absorption: The residual vibration after the first stage of attenuation is transmitted to the composite cabinet. The pre-tightening force generated by the compression of the shock-absorbing cotton between the outer shell and the inner shell absorbs the mid-frequency vibration after the first stage of attenuation. The shock-absorbing cotton also serves as a heat insulation layer, slowing down the heat exchange between the inside and outside of the cabinet, thus achieving the combined effect of shock absorption and heat insulation. The inner shell and the outer shell are fixedly connected by fasteners that pass through the shock-absorbing cotton, so that the inner shell can simultaneously obtain elastic support from the shock-absorbing cotton and rigid constraint from the fasteners when subjected to vibration.

9. The outdoor cabinet structure suitable for high vibration environments according to claim 8, characterized in that, The third-stage vibration reduction step: An internal shock-absorbing bracket is provided, which is installed on the inner shell of the composite cabinet. Through a secondary shock-absorbing damper connected between the electrical box and the inner shell, the high-frequency micro-amplitude vibrations attenuated by the first two stages are absorbed. The shock-absorbing pads placed between the electrical box and the inner housing prevent rigid collisions between the electrical box and the inner housing.

10. The outdoor cabinet structure suitable for high vibration environments according to claim 9, characterized in that, The first-stage vibration reduction step, the second-stage vibration reduction step, and the third-stage vibration reduction step are connected in series to form a complete vibration reduction path from the installation platform to the core electrical functional module: The first-stage vibration reduction step is performed by the vibration-damping chassis, which absorbs low-frequency large-amplitude vibrations from the installation platform and cuts off the main path of vibration transmission to the cabinet. The second-stage vibration damping step is performed by the composite cabinet, absorbing the mid-frequency vibrations after the first-stage attenuation and isolating the influence of the outer shell deformation on the inner shell; The third-stage vibration damping step is performed by the internal vibration damping bracket, absorbing the high-frequency micro-amplitude vibrations that have been attenuated by the first two stages.

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