CN218941123U - Marine access layer switch equipment - Google Patents

Abstract

The embodiment of the application provides a marine access layer switch device, which comprises: the device comprises a case, a frame, a back plate module, 2 power modules, 2 exchange modules, 3 electric interface modules, a tera module and an optical/electric interface module; the machine frame is arranged in the machine case, the machine frame can be integrally pulled out from the machine case, and 9 mounting grooves are formed in the front of the machine frame and are used for correspondingly mounting 2 power supply modules, 2 exchange modules, 3 electric interface modules, the tera module and the optical/electric interface module; the backboard module is arranged at the rear part of the machine frame and is electrically connected with the power module, the exchange module, the electric interface module, the tera-megamodule and the optical/electric interface module.

Description

Marine access layer switch equipment

Technical Field

The application relates to the technical field of shipborne network information exchange equipment, in particular to a ship access layer switch device.

Background

The commercial access layer switch of the mainstream in the current market is mainly suitable for being used in the indoor environment of the land building with better environmental conditions. In general, the switch in the land indoor environment only needs bare computers, and no additional protection facilities are needed. In the case of severe environmental conditions such as ships, the safety and stability of bare metal use are greatly reduced due to the influences of temperature, humidity, air pressure, impact, interference and the like, so that a post-reinforcement access layer switch device specially designed with protection measures for the severe environmental conditions such as ships is mostly adopted, wherein the post-reinforcement access layer switch device is used for ensuring that any structure and performance of a commercial access layer switch are not changed, and measures such as shock absorbers, frames, adhesives, screws, temperature sensors, cooling and heating fans and the like are added around the bare metal so as to ensure the availability under the severe environmental conditions.

The access layer switch equipment is reinforced in the acquired days, so that the application problem of the access layer switch on a ship is solved temporarily, but the access layer switch equipment is increased in size and heavy in weight, more resources of the ship are occupied, in addition, the later maintenance and repair are difficult due to the influence of factors such as easy damage of commercial devices in the access layer switch, production stopping of the devices and the like, the purchasing period of spare parts is prolonged year by year, the cost is increased year by year, and the long-term use of the ship access layer switch is not facilitated.

Disclosure of Invention

The embodiment of the application provides a marine access layer switch device, which comprises: the device comprises a case, a frame, a back plate module, 2 power modules, 2 exchange modules, 3 electric interface modules, a tera module and an optical/electric interface module; the machine frame is arranged in the machine case, the machine frame can be integrally pulled out from the machine case, and 9 mounting grooves are formed in the front of the machine frame and are used for correspondingly mounting 2 power supply modules, 2 exchange modules, 3 electric interface modules, the tera module and the optical/electric interface module; the backboard module is arranged at the rear part of the machine frame and is electrically connected with the power module, the exchange module, the electric interface module, the tera-megamodule and the optical/electric interface module.

In some alternative embodiments, the power module, the switching module, the electrical interface module, the tera module, and the optical/electrical interface module are mounted to a front portion of the subrack and support hot plugging.

In some alternative embodiments, the electrical interface module includes 12 electrical ports.

In some alternative embodiments, the optical/electrical interface module includes 8 electrical ports and 4 optical ports.

In some alternative embodiments, the bottom of the chassis is provided with a bottom damper.

In some alternative embodiments, the cabinet back is provided with a back shock absorber.

In some alternative embodiments, the ship access layer switch device further includes a fan module, the chassis is provided with an opening, the fan module is disposed corresponding to the opening, and the fan module is electrically connected with the back panel module.

The beneficial effects brought by the technical scheme are as follows:

according to the marine access layer switch equipment provided by the embodiment of the application, the modular method is used for realizing the sharing of the modules to the greatest extent in consideration of standardization, modularization and easy maintenance. The equipment can ensure that the access layer switch equipment reliably and stably works in a marine severe environment on the premise of meeting the requirement of military standard and standard environment adaptability and the requirement of a system on equipment technical performance.

Drawings

The drawings illustrate generally, by way of example and not by way of limitation, various embodiments discussed herein.

Fig. 1 is a schematic structural diagram of a marine access layer switch device according to an embodiment of the present application;

fig. 2 is a front view of a ship access layer switch device according to an embodiment of the present application;

FIG. 3 is a side view of a marine access stratum switch apparatus according to an embodiment of the present application;

FIG. 4 is a schematic diagram of a marine access layer switch device assembly relationship according to an embodiment of the present disclosure;

fig. 5 is a bottom view of a ship access layer switch device according to an embodiment of the present application.

Symbol description:

11-a chassis; 12-a frame; 13-a back plate module; 14-a power module; 15-an exchange module; 16-an electrical interface module; 17-tera module; 18-an optical/electrical interface module; 19-a fan module; 21-a mounting groove; 22-bottom damper; 23-a back damper; 24-opening.

Detailed Description

For a more complete understanding of the features and technical content of the embodiments of the present application, reference should be made to the following detailed description of the embodiments of the present application, taken in conjunction with the accompanying drawings, which are for purposes of illustration only and not intended to limit the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise indicated and defined, the term "connected" should be construed broadly, and for example, may be an electrical connection, may be a communication between two elements, may be a direct connection, or may be an indirect connection via an intermediary, and it will be understood by those skilled in the art that the specific meaning of the term may be understood according to the specific circumstances.

It should be noted that, the term "first\second\third" in the embodiments of the present application is merely to distinguish similar objects, and does not represent a specific order for the objects, it is to be understood that "first\second\third" may interchange a specific order or sequence where allowed. It is to be understood that the "first\second\third" distinguishing objects may be interchanged where appropriate such that the embodiments of the present application described herein may be implemented in sequences other than those illustrated or described herein.

Fig. 1 is a schematic structural diagram of a marine access layer switch device according to an embodiment of the present application; fig. 2 is a front view of a ship access layer switch device according to an embodiment of the present application; FIG. 3 is a side view of a marine access stratum switch apparatus according to an embodiment of the present application; FIG. 4 is a schematic diagram of a marine access layer switch device assembly relationship according to an embodiment of the present disclosure; fig. 5 is a bottom view of a ship access layer switch device according to an embodiment of the present application. As shown in fig. 1, an embodiment of the present application provides a marine access layer switch device, including: chassis 11, chassis 12, backplane module 13, 2 power modules 14, 2 switch modules 15, 3 electrical interface modules 16, tera modules 17, and optical/electrical interface modules 18. The frame 12 is disposed in the chassis 11, the frame 12 can be integrally drawn out from the chassis 11, and 9 mounting slots 21 are disposed at the front of the frame 12 for correspondingly mounting 2 power modules 14, 2 switch modules 15, 3 electrical interface modules 16, a tera module 17 and an optical/electrical interface module 18. The back board module 13 is disposed at the rear of the frame 13 and electrically connected to the power module 14, the exchange module 15, the electrical interface module 16, the tera module 17 and the optical/electrical interface module 18. Here, the front part of the frame 12, that is, the frame 12 corresponds to one side of the surface of the casing 12 in the extraction direction, and the rear part of the frame 12, that is, the frame 12 corresponds to one side of the inside of the casing 12 in the extraction direction.

Here, the power module 14, the switching module 15, the electrical interface module 16, the tera module 17, and the optical/electrical interface module 18 are mounted on the front of the subrack 12 and support hot plugging. The installation effect is shown in fig. 2, wherein the electrical interface module 16 and the optical/electrical interface module 18 are not shown in fig. 2. Illustratively, as shown in FIG. 3, the switch module 15 can be withdrawn from the subrack 12.

In the embodiment of the application, the access layer switch equipment is in a front line outlet mode, and wall hanging installation can be realized by replacing the installation accessory.

The chassis 11 adopts an aluminum plate to machine and splice the chassis body, a top plate (with the thickness of 12 mm), a bottom plate (with the thickness of 15 mm) and a side plate (with the thickness of 12 mm), and the whole damping mounting plate (with the thickness of 10 mm); the hardware and the fastener are stainless steel 304.

The aluminum material of the case body is subjected to natural color or yellow conductive oxidation, the outer surface of the case is sprayed with paint, and the color of the aluminum material is green gray (GSB 05-1426-2001-78BG 01), and the performance meets the relevant requirements of navy; the chassis 11 shock-absorbing base adopts black anodized aluminum plate, and the shock absorber adopts 304 stainless steel and a steel wire rope shock absorber.

And the top of the case is outgoing line and is installed in a floor mode. The left side of the case is an air inlet, and the right side is an air outlet; the air inlet and the air outlet are provided with ventilation waveguides according to electromagnetic compatibility (Electromagnetic Compatibility, EMC) requirements; the air inlet and the air outlet are provided with a filter screen.

The mounting mode of the frame 12 is as follows: the machine frame 12 adopts a 19-inch standard switch plug box, 2 positioning pins are arranged at corresponding positions of the machine case 11 by utilizing a guide hole at the back (module) of the switch, the positioning of the machine frame 12 is realized, the machine frame 12 is arranged by utilizing 19-inch standards at two sides of the interior of the machine case 11, and a mounting flange of the machine frame 12 is fixed; to facilitate top cable tying, a tie-down frame is mounted on the frame 12.

The switch device refers to CPCI-6U standard, the frame 12 employs a 19 inch standard jack, and the in-jack module employs a standard CPCI width. Here, the frame 12 is machined from an aluminum plate. And (3) appearance installation: 482.6 mm (19 inches) wide, 444 mm (10U) high, 302 mm deep, standard frame construction; the front and the back can be provided with fixed mounting flanges; wall hanging installation can be realized by replacing the wall hanging bracket. All plug modules are universal with the core layer switch and can be interchanged. Each module adopts a closed structure, and the IP54 is protected. Surface treatment: the side plates are anodized in a natural color, and each module (including the panel) is oxidized in a natural color. Module interface connector: adopt high reliable aviation to insert type connector, protection level: IP54.

In some alternative embodiments, the electrical interface module 16 includes 12 electrical ports.

In some alternative embodiments, the optical/electrical interface module 18 includes 8 electrical ports and 4 optical ports.

In some alternative embodiments, as shown in fig. 2 and 3, the bottom of the chassis 11 is provided with a bottom shock absorber 22 and the back of the chassis 11 is provided with a back shock absorber 23. Optionally, a steel wire rope damper is arranged at the bottom of the chassis 11, one end of the damper is fixed with the integral chassis base plate, and the other end of the damper is fixed with the integral damping mounting plate; the back of the case 11 is provided with a steel wire rope shock absorber, one end of the shock absorber is fixed with the whole back plate of the case, and the other end of the shock absorber is fixed with the whole shock absorption mounting plate.

In some alternative embodiments, as shown in fig. 1, the ship access layer switch apparatus further includes a fan module 19, the fan module 19 being electrically connected to the back panel module 13. As shown in fig. 5, the chassis 11 is provided with an opening 24, and the fan module 19 is disposed corresponding to the opening 24. For example only, the openings 24 may be provided on either side or on top of the chassis 11 as desired for heat dissipation.

The embodiment of the application provides a marine access layer switch device, which is used for realizing the sharing of modules to the greatest extent by using a modularization method in consideration of standardization, modularization and easy maintenance. The equipment can adopt an congenital reinforcement method in the design stage on the premise of meeting the requirement of military standard and standard environment adaptability and the requirement of a system on equipment technical performance, and ensures that the access layer switch equipment reliably and stably works in a marine severe environment. The congenital reinforcement refers to customizing a special scheme by considering the requirements of severe environmental conditions at the beginning of the design of the access layer switch, and verifying item by item in the development process, so that the reliability of the switch is greatly improved.

In the embodiment of the present application, the switching module 15 adopts an inserting box structure. Specifically:

compatible core layer switch equipment interface module subrack structural design.

The aluminum plate is positioned in a slot at the front part of the frame 12, the aluminum plate is mechanically processed to integrally cool the surface of the supporting plate to conduct conductive oxidation, green gray paint is sprayed on the panel, the panel belt M5 is loosened and the fixing screw is not removed, and the aluminum plate is provided with a pull-out aid, a positioner and a protection level IP54.

External dimensions: 40.3 mm wide (40.64 mm wide for 2 standard CPCI slots), 355 mm high (8U space) and 176 mm deep; weighing about 1600 grams.

The shell is formed by: the machine shell is composed of a front panel and a cover plate (with radiating ribs); the pull-out aid is fixed on the front panel.

Sealing and electromagnetic compatibility (Electromagnetic Compatibility, EMC): there is seal structure between panel and the subrack, installs conductive rubber sealing washer (whole sealing washer can realize IP54 protection level, splice adhesive tape seal can realize IP44 protection level).

And (3) heat dissipation: the PCB energy consumption device is contacted with the inner side of the cover plate (with the heat dissipation ribs) through the heat conduction film to realize conduction and heat dissipation; the cover plate is contacted with the inner side of the wind tunnel through the heat conduction silicone grease, the inner side of the wind tunnel is provided with radiating ribs, and fans are arranged on two sides of the wind tunnel to directly blow the radiating ribs, so that forced convection heat dissipation is realized.

Lamp and debugging port: an LED signal lamp on the PCB board leads out an indication signal through a light guide column; the light guide column passes through the front panel from the front and is sealed, the debugging port adopts a right-angle sealed connector, one end of the light guide column is welded at the front part of the PCB, and the other end of the light guide column is fixed on the front panel.

In the embodiment of the present application, the power module 15 adopts an insertion box structure. Specifically:

compatible core layer switch equipment interface module subrack structural design.

The aluminum plate is positioned in a slot (slot position 1-2) at the front part of the exchanger, the aluminum plate is machined to integrally cool and oxidize the surface of the supporting plate in a conducting manner, green gray paint is sprayed on the panel, the panel belt M5 is loosened and the fixing screw is not removed, and the aluminum plate is provided with a pull-out aid, a positioner and a protection grade IP54;

external dimensions: 40.3 mm wide (40.64 mm wide for 2 standard CPCI slots), 355 mm high (8U space) and 176 mm deep; weigh about 1800 grams;

the shell is formed by: the machine shell is composed of a front panel and a cover plate (with radiating ribs); the pull-out aid is fixed on the front panel;

sealing and EMC: a sealing structure is arranged between the panel and the plug box, and a conductive rubber sealing ring is arranged (the whole sealing ring can realize IP54 protection level, and the splice adhesive tape sealing can realize IP44 protection level);

and (3) heat dissipation: the PCB energy consumption device is contacted with the inner side of the cover plate (with the heat dissipation ribs) through the heat conduction film to realize conduction and heat dissipation; the cover plate is in contact with the inner side of the wind tunnel through heat conduction silicone grease for heat dissipation, the inner side of the wind tunnel is provided with heat dissipation ribs, and fans are arranged on two sides of the wind tunnel for direct blowing of the heat dissipation ribs, so that forced convection heat dissipation is realized;

signal lamp: an LED signal lamp on the PCB board leads out an indication signal through a light guide column; the light guide column passes through the front panel from the front and is sealed;

for the discrete devices with high energy consumption, the discrete devices are required to be encapsulated by insulating heat conducting glue, and then the heat conducting glue is conducted to the cover plate to dissipate heat, so that the discrete devices are not required to be independently designed with complex heat conducting blocks, and complex processes of processing and assembling are avoided.

In the embodiment of the present application, the electrical interface module 16 and the optical/electrical interface module 18 adopt a plug-in box structure. Specifically:

compatible access layer switch interface module subrack structural design.

The aluminum plate is machined into the surface of the integral heat dissipation support plate by a natural-color conductive oxidation process, and the panel belt M5 is loosened and the fixing screw is not removed;

external dimensions: 40.3 mm wide (40.64 mm wide for 2 standard CPCI slots), 355 mm high (8U space) and 103 mm deep; weigh about 600 grams;

the shell is formed by: the machine shell is composed of a front panel and a cover plate (with radiating ribs);

and (3) heat dissipation: the PCB energy consumption device is contacted with the inner side of the cover plate (with the heat dissipation ribs) through the heat conduction film to realize conduction and heat dissipation; the cover plate is in contact with the inner side of the wind tunnel through heat conduction silicone grease for heat dissipation, the inner side of the wind tunnel is provided with heat dissipation ribs, and fans are arranged on two sides of the wind tunnel for direct blowing of the heat dissipation ribs, so that forced convection heat dissipation is realized;

the electrical interface module 16 includes 12 electrical ports and the optical/electrical interface module 18 includes 8 electrical interfaces and 4 optical ports; the structural dimensions of the optical/electrical interface module 18 are the same except for the front panel.

Compared with the acquired reinforced access layer switch, the marine access layer switch device provided by the application has the advantages of being remarkably improved in reliability, maintainability, guarantee, testability, safety and environmental adaptability.

Reliability aspect:

reliability design criteria: the reliability design method and design criterion mainly adopted in the development process of the marine access layer switch equipment are as follows: the technical performance, quality grade, use condition and the like of components and parts meet the requirements of products; the standard components which are proved to have stable quality, high reliability, development prospect and reliable supply channels by practice are preferably selected; when designing the product, the variety and specification of the components and manufacturers are compressed to the maximum extent; strictly controlling the use of new types of components; the method is executed according to the derating curve in GJB/Z35 component derating design criterion or related manual.

Control measures for reliability design: in order to improve the reliability of the marine access layer exchange equipment, the following measures are taken: according to GJB1032 'electronic product environmental stress screening method', environmental stress screening and aging test are carried out on all components, potential faults are removed, and all components are ensured to have due reliability; when the hardware is designed, the derating design is adopted, so that the service lives of components and raw materials are properly prolonged; and the operation flow and the operation instruction are strictly followed in the PCB production and welding processes, so that the quality inspection is enhanced.

Maintainability aspect:

the standard parts or industry general parts are preferably selected when the marine access layer switch equipment is designed, so that the variety and specification of spare parts are reduced as much as possible, and the standardization and interchangeability degree is improved. The maintainability design of the marine access layer exchanger equipment mainly adopts a modularized structure, and the modules are connected with the bottom plate through connectors, so that when a certain module fails, the module corresponding to the failure function can be conveniently separated, detached, maintained and replaced.

The marine access layer switch equipment server plug-in box, the exchange module, the time system module, the power module, the disk control module and the storage module belong to a field replaceable unit, simplicity of disassembly and assembly is considered during design, the marine access layer switch equipment server plug-in box is convenient to assemble and disassemble, technical requirements on maintenance personnel are reduced, and the average maintenance time (MTTR) of the marine access layer switch equipment is less than 30 minutes.

The guarantee aspect is as follows:

the ship access layer exchanger equipment performs security design work, analyzes and designs the security of the product, plans and develops required security resources, enables the product to meet the security requirement, and adopts the following measures: the product is developed into a three-dimensional design, unified standards are formed in the aspects of the supporting software of the chassis and the board card module system, the interchangeability of the similar modules is ensured, and the guarantee level is improved; according to the project condition, the same model module is selected for the product design of the same case type, the base plate which can be used in a compatible mode is designed, the product composition types are reduced, and the guarantee is improved.

In the design stage, testability and maintainability are considered, so that the self-testing capability of the product is improved, and the guarantee level is improved; the storage performance of the electronic equipment is improved through the three-proofing design; the product has no parts to be calibrated and no special maintenance requirement.

Aspect of testability:

the marine access layer switch equipment has a fault alarm function, and adopts built-in test and manual test to provide complete fault detection and isolation capability for fault diagnosis positioned to the plug-in box.

Security aspect:

passivation treatment is adopted for the corners of the appearance structure of the marine access layer exchanger equipment, so that damage to installation and operators caused by sharp corners and sharp edges is prevented; the power input and other sockets and switch positions of the marine access layer switch equipment are provided with clear marks, so that misoperation of an operator is avoided; the power supply voltage of the marine access layer switch equipment is 220V, the power ground and the shell are in insulation design, and the insulation resistance is more than 100M ohms.

Environmental suitability:

in the design of the marine access layer switch equipment, components such as control components are strictly selected, components such as resistors and capacitors are selected as military components, and other components without military grades are selected as industrial grade as possible, so that the temperature index of the working environment is ensured to be met.

The marine access layer switch equipment adopts good three-protection (moisture-proof, mould-proof and salt fog-proof) measures. The plug box is made into a sealing structure to isolate the external environment, and anti-aging rubber is selected at the joint of the metal shells. The three-proofing protection of the equipment mainly comprises the three-proofing protection of a metal material, and the three-proofing protection of a nonmetal material and a printed circuit board. The circuit unit is protected and coated on various printed boards in various plug boxes in the equipment, and three-proofing varnish is uniformly sprayed, so that the circuit unit can resist the influence of severe environment during storage and working, the aims of dampproofing, mould proofing and salt spray corrosion prevention are achieved, and the circuit leakage current is increased, short circuit and even breakdown caused by 'fog condensation' generated in air due to sudden temperature change can be prevented.

The marine access layer exchanger equipment adopts board-level reinforcement and cabinet vibration isolation design to meet the requirements of impact and vibration indexes. And multiple reinforcements are used for the PCB, so that the rigidity of the PCB is enhanced. The vulnerable components are additionally provided with fixed structural members or are bonded and reinforced; the method comprises the steps of adding a reinforcing support plate and a reinforcing strip to a printed board; a high-reliability connector is adopted; through finite element vibration analysis, the natural frequency of the PCB is designed to be more than 120Hz, and the rigid connection requirement of the hierarchical structure is met. The bottom of the cabinet is provided with a vibration damper without resonance peaks, and a screw hole type back frame vibration damper matched with the vibration damper at the bottom is installed by a wall.

The cabinet body of the marine access layer exchanger equipment adopts an active air cooling heat dissipation mode to assist products to realize temperature adaptability indexes.

The main materials of the marine access layer exchanger equipment are stainless steel and aluminum alloy, new materials and new processes are not used in the design, and the existing materials and processes are used for mold and salt spray tests regularly, so that the requirements of mold and salt spray environmental indexes can be met.

In addition, in terms of electromagnetic compatibility:

the electromagnetic compatibility design of the marine access layer switch equipment mainly depends on the electromagnetic compatibility design of the plug-in box, the cabinet body and the internal cable, and filtering, shielding and grounding are important methods for solving electromagnetic interference. The marine access layer switch equipment of the application is used for carrying out electromagnetic compatibility design on a printed circuit board, a cabinet and a power input by comprehensively applying filtering, shielding and grounding technologies. Specifically:

printed circuit board design:

when the high, medium and low speed logic circuits are applied simultaneously, the high speed circuit should be designed at the entrance of the circuit board; adding RC decoupling filter to the signal inlet to eliminate long line transmission interference; in order to control differential mode radiation of the printed board, the signal and the return line are abutted as closely as possible to keep the current loop in the circuit to a minimum; using a larger ground plane to reduce ground impedance; the power line and the ground line are close to each other; in a multilayer circuit board, a power plane and a ground plane are separated; arc wiring without abrupt change; shortening the connecting line as much as possible; the analog circuit is separated from the digital circuit and the power circuit is separated from the control circuit.

Electromagnetic shielding design of a cabinet: a cable adapter for transmitting signals with cabin equipment is arranged on the cabinet, and a conductive liner is additionally arranged at the joint of the adapter and the cabinet so as to ensure electrical continuity; the contact part of the conductive liner and the cabinet is not painted so as to ensure good electrical contact; a shielding heat-shrinkable sleeve is selected to shield the joint of the cable and the connector. And (3) power supply filtering design: ensuring that the filter can reliably work under high voltage conditions; when the filter continuously passes through the maximum rated current, the temperature of the filter is low so as to ensure that the working performance of devices in the filter is not damaged when the rated current continuously works; the filter must have shielding structure, shielding case cover and body have good electrical contact, the capacitor lead wire of the filter should be as short as possible, preferably select the low lead wire short inductance's through capacitance; the military alternating current filter is arranged at the power input end, has excellent common mode and differential mode inhibition capability, has a good inhibition effect on peak interference of a power line, and is arranged on the surface of the conductive metal and is positioned close to the power inlet; the input and output lines of the filter are shielded wires, the wires are separated, and the filter is tightly forbidden to be bundled together, so that a loop is avoided;

cable radiation suppression: the power line adopts a shielding wire; wiring according to the signal intensity partition; the sensitive signal wire uses twisted pair; and eliminating peak interference by using an EMI wave-absorbing magnetic ring.

The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the disclosure referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the disclosure. Such as the above features are interchanged with the features disclosed in the present application (but not limited to) having similar functions.

Claims (7)

1. A marine access stratum switch apparatus, comprising: the device comprises a case, a frame, a back plate module, 2 power modules, 2 exchange modules, 3 electric interface modules, a tera module and an optical/electric interface module; the machine frame is arranged in the machine case, the machine frame can be integrally pulled out from the machine case, and 9 mounting grooves are formed in the front of the machine frame and are used for correspondingly mounting 2 power supply modules, 2 exchange modules, 3 electric interface modules, the tera module and the optical/electric interface module; the backboard module is arranged at the rear part of the machine frame and is electrically connected with the power module, the exchange module, the electric interface module, the tera-megamodule and the optical/electric interface module.

2. The ship access layer switch apparatus of claim 1, wherein the power module, the switching module, the electrical interface module, the tera module, and the optical/electrical interface module are mounted to a front portion of the subrack and support hot plugging.

3. The ship access layer switch apparatus of claim 1, wherein said electrical interface module comprises 12 electrical ports.

4. The ship access layer switch apparatus of claim 1, wherein said optical/electrical interface module comprises 8 electrical ports and 4 optical ports.

5. The ship access stratum switch device of claim 1, wherein the bottom of the cabinet is provided with a bottom shock absorber.

6. The ship access stratum switch device of claim 1, wherein the cabinet back is provided with a back shock absorber.

7. The ship access stratum switch device of claim 1, further comprising a fan module, wherein the chassis is provided with an opening, wherein the fan module is disposed corresponding to the opening, and wherein the fan module is electrically connected to the back panel module.

Images