Convenient-to-adjust switch cabinet for optical fiber switch and assembly method of convenient-to-adjust switch cabinet

Abstract

The invention relates to a convenient-to-adjust switch cabinet for an optical fiber switch and an assembly method thereof, the convenient-to-adjust switch cabinet comprises a cabinet body, a plurality of bearing plates, two front columns and two rear columns, the bearing plates are detachably mounted on the two front columns and the two rear columns, the bearing plates are internally provided with air cavities, and the upper end surfaces of the bearing plates are provided with a plurality of air exhaust holes communicated with the air cavities; an exhaust fan is arranged on the cabinet body, an air inlet of the exhaust fan is connected with an air exhaust main pipe, the air exhaust main pipe is connected with a plurality of air exhaust branch pipes, and the air exhaust branch pipes are communicated with the air cavity in the bearing plate; a valve mechanism is arranged on the air exhaust branch pipe and used for communicating the air exhaust branch pipe with the air cavity only when the exchanger is placed on the bearing plate in an aligned mode. According to the invention, each bearing plate has air draft and heat dissipation effects, and even if part of switches are maintained after the cabinet door is opened, the air draft branch pipes corresponding to the bearing plates are not communicated with the air cavities in the bearing plates by means of the valve mechanisms, so that the pneumatic heat dissipation loss is reduced, and the heat dissipation effects of other switches are not affected.

Description

Technical Field

[0001] The present application relates to the technical field of electrical cabinets, and in particular to a portable switch cabinet for an optical fiber switch and an assembly method thereof. Background Art

[0002] A fiber optic switch is a network device that uses optical fiber as a transmission medium for data transmission. Compared with traditional Ethernet switches, fiber optic switches generally provide higher transmission speeds, longer transmission distances, and stronger resistance to electromagnetic interference. Switch cabinets are an important component of network equipment, mainly used to install and store network switches and other related network equipment, such as routers, firewalls, etc.

[0003] In the related art, a Chinese patent with application number CN202110202581.7 proposes a portable switch cabinet for optical fiber switches, including a cabinet body with a rectangular box-shaped structure and an opening on one side, an installation compartment for installing an adjustable switch docking frame is provided in the cabinet body, a threading groove connected to the installation compartment is centrally provided on one side of the cabinet body away from the opening side of the cabinet body, multiple groups of adjustable switch docking frames are installed in the installation compartment, and multiple groups of adjustable optical fiber threading frames adapted to the number of groups of adjustable switch docking frames are installed on the threading groove, and the adjustable switch docking frame includes a bearing plate as a main structure, the bearing plate is a rectangular plate-shaped structure with a wire-stripping mechanism constructed on one side, and two groups of L-shaped limit plates are symmetrically constructed on the side of the bearing plate away from the threading groove, and a support frame is constructed on the upper end surface of the bearing plate. The portable switch cabinet for optical fiber switches has a reasonable structure, is easy to achieve efficient heat dissipation, and is convenient for line arrangement and switch maintenance.

[0004] The above-mentioned related technologies have the following defects: when the switch cabinet is in a fully loaded state, switches will be installed on each compartment, and the switches will also be plugged with more cables, which makes it difficult to dissipate heat between the switches on two adjacent layers, affecting the heat dissipation effect; and the switches in the current switch cabinet are directly fixed on the columns in the switch cabinet. When maintaining the switches, on the one hand, opening the cabinet door affects the input of cold air, and on the other hand, disassembling and assembling the switches is also time-consuming, which in turn affects the heat dissipation effect of the remaining switches. Summary of the invention

[0005] In order to improve the problem that some switches in a switch cabinet affect the heat dissipation effect of other switches during maintenance and the operation is cumbersome, the present application provides a portable switch cabinet for fiber optic switches and an assembly method thereof.

[0006] The first aspect of the present application provides a portable switch cabinet for a fiber optic switch using the following technical solution: A portable switch cabinet for an optical fiber switch, comprising a cabinet body, a plurality of supporting plates, and two front columns and two rear columns vertically mounted in the cabinet body, wherein the front columns and the rear columns are provided with a plurality of mounting holes at intervals, the supporting plate can be detachably mounted on the two front columns and the two rear columns, the supporting plate has an air cavity inside, and a plurality of air extraction holes communicating with the air cavity are opened on the upper end surface; The cabinet is provided with an exhaust fan, the air inlet of the exhaust fan is connected to an exhaust main pipe extending into the cabinet, the exhaust main pipe is connected to a plurality of exhaust branch pipes, and one end of the exhaust branch pipe away from the exhaust main pipe is connected to the air cavity on the supporting plate; The air extraction branch pipe is provided with a valve mechanism, and the valve mechanism is used to connect the air extraction branch pipe with the air cavity only when a switch is placed on the supporting plate.

[0007] Furthermore, two parallel brackets are slidably arranged on the support plate, and the two brackets are used to jointly support a switch. The valve mechanism is configured to control the air extraction branch pipe to be disconnected from the air cavity when the bracket supporting the switch slides out and when the bracket is not completely moved into the cabinet to a specified position.

[0008] Furthermore, the valve mechanism includes a valve sleeve arranged on the air extraction branch pipe, and two opposite ends of the valve sleeve are respectively provided with a first joint connected to the air extraction branch pipe and a second joint connected to the air cavity, and the valve sleeve has a valve cavity connected to both the first joint and the second joint, and a piston is provided in the valve cavity for lifting and sliding, and the first joint or the second joint is blocked when the piston moves down to the bottom stroke, and the first joint, the valve cavity and the second joint are connected when the piston moves up; The valve mechanism also includes a control component for controlling the piston to lift up when the bracket moves into a specified position in the cabinet.

[0009] Furthermore, the control assembly includes a first magnetic body fixedly connected to one end of the bracket close to the rear column and a second magnetic body fixedly connected to the piston, a sliding rod penetrating and extending outside the valve housing is fixedly connected to the piston, the second magnetic body is fixedly connected to the outer end of the sliding rod, and the second magnetic body is magnetically attracted to the first magnetic body; when the bracket moves into a designated position in the cabinet, the first magnetic body and the second magnetic body are in contact with each other; A return spring sleeved on the slide rod is also provided between the piston and the inner top wall of the valve housing.

[0010] Furthermore, the depth of the bracket is smaller than the depth of the supporting plate, and a front positioning member for positioning the bracket is provided at one end of the supporting plate close to the front column; When the bracket is positioned by the front positioning member, a gap is provided between the first magnetic body and the second magnetic body.

[0011] Furthermore, a silicone sheet surrounding the outer sides of the plurality of air extraction holes is provided on the support plate, and a vertical dimension of the silicone sheet is not less than a distance between the bottom surface of the switch and the upper end surface of the support plate when the switch is placed on the bracket.

[0012] Furthermore, a flow control plate is attached to the upper surface of the support plate, and a plurality of bimetallic strips with free ends extending into the exhaust holes are fixed to the flow control plate. The bimetallic strips are inclined at room temperature and semi-shield the exhaust holes. The upper layer of the bimetallic strips is a metal with a high thermal expansion coefficient, and the lower layer is a metal with a low thermal expansion coefficient.

[0013] Furthermore, one end of the support plate close to the rear pillar is fixedly connected with two rear protrusions corresponding to the two rear pillars, and one end of the support plate close to the front pillar is elastically provided with two front protrusions corresponding to the two front pillars, and the rear protrusions and the front protrusions are both plug-fitted into the mounting holes.

[0014] Furthermore, the support plate is provided with two receiving grooves at one end close to the front column for receiving the two front protrusions respectively, an elastic member is connected between the front protrusion and the bottom wall of the receiving groove, and a guiding inclined surface is provided on the upper end surface of the front protrusion.

[0015] The second aspect of the present application provides a method for assembling a portable switch cabinet for a fiber optic switch using the following technical solution: A method for assembling a portable switch cabinet for an optical fiber switch, based on the above-mentioned portable switch cabinet for an optical fiber switch, comprises the following steps: S1. Assemble the cabinet, arrange the exhaust fan and the exhaust main pipe in the cabinet, and then connect a plurality of exhaust branches to the exhaust main pipe; S2. The corresponding number of the plurality of support plates are mounted to the two front columns and the two rear columns; S3. Connect the air cavity of the support plate to the corresponding exhaust branch pipe, and test the air tightness of the exhaust main pipe and the air cavity through the valve mechanism; S4. Place a number of switches on the plurality of support plates according to configuration requirements.

[0016] In summary, the beneficial technical effects of this application are: 1. After the switch is placed on the support plate, when the switch is working, the exhaust fan is started to exhaust air. With the help of multiple exhaust holes on the support plate, the hot air on the switch can be sucked into the air cavity, and then converged into the exhaust main pipe through the exhaust branch pipe, and finally discharged through the exhaust fan; at this time, the air pressure in the cabinet is reduced, and the clean air with a lower temperature in the air intake main pipe automatically enters the cabinet under the action of air pressure, so that the efficient heat dissipation effect of the switch in the switch cabinet of this application can be achieved; 2. Since each support plate has an exhaust and heat dissipation effect, even when some switches are maintained after the cabinet door is opened, the heat dissipation effect of other switches will not be affected. In addition, when there is no switch on the support plate or the switch is pulled out for maintenance, the exhaust branch pipe corresponding to the support plate is disconnected from the air cavity on the support plate by means of a valve mechanism, which reduces the pneumatic heat dissipation loss and can also slightly improve the heat dissipation effect of other working switches; 3. When a certain switch generates more heat when working, the temperature of the air flow sucked into the air cavity is higher. These hot air flows act on the bimetallic strip, which can make the upper layer of the bimetallic strip expand and deform much more than the lower layer, making the downward bending amplitude of the bimetallic strip in the air extraction hole larger, thereby reducing the shielding area of ​​the bimetallic strip on the air extraction hole, and can increase the actual air intake of the air extraction hole, so as to change the overall air extraction volume of multiple air extraction holes on the support plate to a certain extent, so as to change the air extraction and heat dissipation effect of the switch. Moreover, the adjustment of the air extraction and heat dissipation effect is based on the actual working state of a single switch, and is dynamically and autonomously adjusted, not affected by the ambient temperature, and does not need to set up complex temperature control components. It is simple and easy to operate, can save energy, control costs, reduce floor space, and facilitate the assembly and production of the switch cabinet of this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the overall structure of the embodiment of the present application; Figure 2 is a schematic diagram of a side sectional structure of an embodiment of the present application; Figure 3 yes Figure 2 A partial enlarged schematic diagram of part A; Figure 4 is a schematic cross-sectional structure diagram of an embodiment of the present application; Figure 5 yes Figure 4 A partial enlarged schematic diagram of part B; Figure 6 is a schematic cross-sectional structural diagram of a valve mechanism according to an embodiment of the present application; Figure 7 It is a schematic diagram of the cross-sectional structure of the front end of the support plate of the embodiment of the present application.

[0018] Description of reference numerals: 1. Cabinet; 11. Front column; 12. Rear column; 13. Mounting hole; 14. Air intake manifold; 2. Support plate; 21. Air cavity; 22. Air extraction hole; 23. Bracket; 24. Silicone sheet; 25. Receiving groove; 31. Exhaust fan; 32. Exhaust main pipe; 33. Exhaust branch pipe; 41. valve sleeve; 411. valve chamber; 42. first joint; 43. second joint; 44. piston; 45. slide rod; 46. return spring; 51. a first magnetic body; 52. a second magnetic body; 6. Front positioning piece; 71. Flow control plate; 72. Bimetallic strip; 81. rear protrusion; 82. front protrusion; 821. guide slope; 83. elastic member. DETAILED DESCRIPTION

[0019] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0020] The present application embodiment discloses a portable switch cabinet for a fiber optic switch. Figure 1 , Figure 2 and Figure 3 It includes a cabinet body 1, multiple supporting plates 2, and two front columns 11 and two rear columns 12 vertically installed in the cabinet body 1. The front columns 11 and the rear columns 12 are arranged in parallel, and the supporting plates 2 are arranged perpendicular to the front columns 11. Multiple mounting holes 13 are spaced apart on the front columns 11 and the rear columns 12. The supporting plates 2 can be detachably installed on the two front columns 11 and the two rear columns 12.

[0021] The supporting plate 2 has an air cavity 21 inside and a plurality of air extraction holes 22 in communication with the air cavity 21 on the upper end surface. The air extraction holes 22 may be circular or elongated.

[0022] The cabinet 1 is provided with an exhaust fan 31, the air inlet of the exhaust fan 31 is connected to an exhaust main pipe 32 extending into the cabinet 1, and the exhaust main pipe 32 is connected to a plurality of exhaust branch pipes 33. Specifically, the exhaust branch pipes 33 are connected to the exhaust main pipe 32 through air quick connectors, and the exhaust branch pipes 33 are configured as hoses. One end of the exhaust branch pipes 33 away from the exhaust main pipe 32 is connected to the corresponding air cavity 21 on the supporting plate 2. In addition, the cabinet 1 is also provided with an air intake main pipe 14. In order to reduce the heat dissipation interference between adjacent cabinets 1, the air intake main pipe 14 is arranged on the side of the cabinet 1 away from the exhaust fan 31, and in order to further reduce the influence of dust on the switch in the cabinet 1, the air intake main pipe 14 is connected to the fresh air system.

[0023] A valve mechanism is provided on the air extraction branch pipe 33 , and the valve mechanism is used to connect the air extraction branch pipe 33 with the air cavity 21 only when a switch is placed on the supporting plate 2 .

[0024] After such arrangement, when the switch is placed on the support plate 2, the exhaust fan 31 is started when the switch is working, and the exhaust fan 31 exhausts air. With the help of multiple exhaust holes 22 on the support plate 2, the hot air on the switch can be sucked into the air cavity 21, and then converged into the exhaust main pipe 32 through the exhaust branch pipe 33, and finally discharged through the exhaust fan 31; at this time, the air pressure in the cabinet 1 is reduced, and the clean air with a lower temperature in the air intake main pipe 14 automatically enters the cabinet 1 under the action of air pressure, so that the efficient heat dissipation effect of the switch in the switch cabinet of this application can be achieved.

[0025] Furthermore, since each support plate 2 has an exhaust and heat dissipation effect, even when some switches are maintained after the cabinet door is opened, the heat dissipation effect of other switches will not be affected. Moreover, when no switch is placed on the support plate 2 or the switch is pulled out for maintenance, the exhaust branch pipe 33 corresponding to the support plate 2 is disconnected from the air cavity 21 on the support plate 2 by means of a valve mechanism, thereby reducing the pneumatic heat dissipation loss and slightly improving the heat dissipation effect of other switches in operation, thereby facilitating the convenient adjustment of the layout in the switch cabinet of the present application.

[0026] Further, to facilitate the maintenance of the switch, refer to Figure 1 , Figure 2 and Figure 4 Two parallel brackets 23 are slidably arranged on the supporting plate 2. The bracket 23 is arranged in an "L" shape. It is slidably arranged on the supporting plate 2 by rollers or balls embedded in the sides of the supporting plate 2. The two brackets 23 are used to jointly support a switch. Specifically, the spacing between the vertical edges of the two brackets 23 is adapted to the width of the switch; the valve mechanism is configured to control the exhaust branch pipe 33 to be disconnected from the air cavity 21 when the bracket 23 supporting the switch slides out and the bracket 23 is not completely moved into the cabinet 1 to a specified position.

[0027] Therefore, when maintaining the switch, it is only necessary to remove the cables and then pull the switch. The switch slides outward from the support plate 2 with the help of the two brackets 23. On the one hand, it can be used as a support for the switch, and on the other hand, it can provide sufficient space for maintenance personnel to operate, which can greatly improve the maintenance effect. Moreover, when the switch is maintained, the bracket 23 slides out a certain distance. Under the action of the valve mechanism, the exhaust branch pipe 33 is not connected to the air cavity 21, which can achieve the effect of avoiding air heat dissipation loss during maintenance.

[0028] Specifically, refer to Figure 3 , Figure 5 and Figure 6 The valve mechanism includes a valve sleeve 41 disposed on the air extraction branch pipe 33, and two opposite ends of the valve sleeve 41 are respectively provided with a first joint 42 communicating with the air extraction branch pipe 33 and a second joint 43 communicating with the air cavity 21. The valve sleeve 41 has a valve cavity 411 communicating with both the first joint 42 and the second joint 43. A piston 44 is provided in the valve cavity 411 to slide upward and downward. When the piston 44 moves downward to the bottom stroke, it blocks the first joint 42 or the second joint 43. When the piston 44 moves upward, the first joint 42, the valve cavity 411 and the second joint 43 are connected. The valve mechanism also includes a control component for controlling the piston 44 to lift up when the bracket 23 moves into a specified position in the cabinet 1 .

[0029] The control assembly includes a first magnetic body 51 fixed to one end of the bracket 23 near the rear column 12 and a second magnetic body 52 fixed to the piston 44. The piston 44 is fixed with a slide bar 45 that penetrates and extends outside the valve housing. The second magnetic body 52 is fixed to the outer end of the slide bar 45. The second magnetic body 52 and the first magnetic body 51 are magnetically attracted to each other. When the bracket 23 moves into the designated position in the cabinet 1, the first magnetic body 51 and the second magnetic body 52 are in contact with each other. A return spring 46 sleeved on the slide bar 45 is also provided between the piston 44 and the inner top wall of the valve housing. In order to ensure the accuracy of the cooperation between the first magnetic body 51 and the second magnetic body 52, the valve sleeve 41 is fixedly mounted on the support plate 2.

[0030] In this way, when the switch is installed on the support plate 2 and the bracket 23 is pushed to the specified position, the switch is now completely embedded in the cabinet 1. When the first magnetic body 51 on the bracket 23 moves to above the second magnetic body 52, the magnetic attraction of the two drives the second magnetic body 52 to drive the slide rod 45 to move upward, so that the piston 44 moves upward in the valve cavity 411 of the valve shell, and the return spring 46 is compressed. At this time, the first joint 42, the valve cavity 411 and the second joint 43 are connected, so that the exhaust branch pipe 33 is connected with the air cavity 21 on the support plate 2. After starting the exhaust fan 31, the heat generated by the switch working on the support plate 2 can be sucked into the air cavity 21 along with the air flow, and then discharged through the exhaust branch pipe 33 and the exhaust main pipe 32.

[0031] When no switch is placed on the support plate 2, the bracket 23 can be pulled forward until the first magnetic body 51 is away from the second magnetic body 52. ​​At this time, the elastic deformation force of the return spring 46 pushes the piston 44 downward in the valve cavity 411, and separates the first joint 42 and the second joint 43, so that the air extraction branch pipe 33 and the air cavity 21 of the support plate 2 are not connected; similarly, when the switch is pulled out through the bracket 23 during maintenance, the air extraction branch pipe 33 and the air cavity 21 of the support plate 2 can also be disconnected. In this way, the automatic opening and closing of the air extraction and heat dissipation function on a single support plate 2 can be realized to reduce the impact on the air extraction and heat dissipation efficiency of other support plates 2.

[0032] In addition, in order to prevent the bracket 23 from moving autonomously when no switch is placed on the support plate 2, refer to Figure 4 , it is further configured that the depth of the bracket 23 is less than the depth of the supporting plate 2, and the end of the supporting plate 2 close to the front column 11 is provided with a front positioning member 6 for positioning the bracket 23; when the bracket 23 is positioned by the front positioning member 6, there is a gap between the first magnetic body 51 and the second magnetic body 52, and the front end of the bracket 23 will not interfere with the normal closing of the cabinet door on the cabinet body 1. In the specific configuration, the front positioning member 6 can be configured as a combination of a magnet and an iron block, or as a combination of an elastic protrusion and a groove.

[0033] At the same time, in order to further improve the exhaust and heat dissipation efficiency of the switch by the multiple exhaust holes 22 on the supporting plate 2, refer to Figure 2 and Figure 3 In another embodiment, a silicone sheet 24 surrounding the outer sides of the plurality of air extraction holes 22 is further provided on the support plate 2, and the vertical dimension of the silicone sheet 24 is not less than the distance between the bottom surface of the switch and the upper end surface of the support plate 2 when the switch is placed on the bracket 23. Thus, when the switch is placed on the bracket 23 and moved into a suitable position in the cabinet 1, the surrounding silicone sheet 24 can seal the space between the switch and the plurality of air extraction holes 22 to improve the efficiency of the air extraction holes 22 in extracting hot air, and can improve the heat dissipation effect of the switch to a certain extent. This method is particularly suitable for switches with side air intake and bottom heat dissipation outlet.

[0034] Considering that switches under different load states or switches of different models generate different amounts of heat when working, in order to improve the precise adjustment of the heat dissipation effect of different switches, in one embodiment, referring to Figure 3 and Figure 4A flow control plate 71 is attached to the upper end surface of the supporting plate 2, and a plurality of bimetallic strips 72 with free ends extending into the exhaust holes 22 are fixedly connected to the flow control plate 71. The bimetallic strips 72 are inclined at room temperature and semi-shield the exhaust holes 22. The upper layer of the bimetallic strips 72 is a metal with a high thermal expansion coefficient, and the lower layer is a metal with a low thermal expansion coefficient. In the specific setting, the exhaust holes 22 are set in a long strip shape, which can facilitate the embedding of the inclined bimetallic strips 72. The bimetallic strips 72 can be a nickel-iron alloy-brass bimetallic strip 72, whose upper layer is brass and the lower layer is nickel-iron alloy, and can undergo significantly different expansion deformation at 40-60°C.

[0035] Therefore, when a certain switch generates more heat when working, the temperature of the air flow sucked into the air cavity 21 is relatively high. These hot air flows act on the bimetallic strip 72, which can make the upper layer of the bimetallic strip 72 expand and deform much more than the lower layer, so that the downward bending amplitude of the bimetallic strip 72 in the air extraction hole 22 becomes larger, thereby reducing the shielding area of ​​the bimetallic strip 72 on the air extraction hole 22, and can increase the actual air intake of the air extraction hole 22, so as to change the overall air extraction volume of the multiple air extraction holes 22 on the support plate 2 to a certain extent, so as to change the air extraction and heat dissipation effect of the switch. Moreover, the adjustment of the air extraction and heat dissipation effect is dynamically and autonomously adjusted based on the actual working state of a single switch, and is not affected by the ambient temperature. There is no need to set up complex temperature control components, which is simple and easy to operate, can save energy, control costs, reduce floor space, and facilitate the assembly and production of the switch cabinet of this application.

[0036] In addition, to facilitate the installation and removal of the support plate 2, refer to Figure 1 , Figure 4 and Figure 7 , one end of the support plate 2 close to the rear pillar 12 is fixedly connected with two rear protrusions 81 corresponding to the two rear pillars 12, and one end of the support plate 2 close to the front pillar 11 is elastically provided with two front protrusions 82 corresponding to the two front pillars 11, and the rear protrusions 81 and the front protrusions 82 are both plugged and adapted to the mounting holes 13. When specifically set, the cross-sectional size of the rear protrusion 81 is slightly smaller than the size of the mounting hole 13. In addition, one end of the support plate 2 close to the front pillar 11 is provided with two receiving grooves 25 for receiving the two front protrusions 82 respectively, and an elastic member 83 is connected between the front protrusion 82 and the bottom wall of the receiving groove 25. The elastic member 83 is set as a spring, one end of the elastic member 83 is fixedly connected to the front protrusion 82, and the other end is fixedly connected to the bottom wall of the receiving groove 25, and the upper end surface of the front protrusion 82 is provided with a guiding inclined surface 821.

[0037] In this way, when installing the support plate 2, the support plate 2 can be first tilted and extended into the cabinet 1, and the rear end can be higher than the front end, and then the two rear protrusions 81 on the support plate 2 can be inserted into the mounting holes 13 at the appropriate positions of the two rear columns 12, and then the front end of the support plate 2 can be gradually lifted up, and the guide inclined surface 821 on the front protrusion 82 can help the front protrusion 82 to slide on the front column 11 and pass over the non-corresponding mounting hole 13. If necessary, the front protrusion 82 can be pressed until the front protrusion 82 moves to the mounting hole 13 corresponding to the rear protrusion 81, and the front protrusion 82 pops out from the receiving groove 25. At this time, the two front protrusions 82 and the two rear protrusions 81 can jointly lift the support plate 2 to complete the installation of the support plate 2. If the support plate 2 needs to be removed, it is only necessary to press the front protrusion 82 to retract it into the receiving groove 25, then flip the support plate 2 to make it tilted, and then take out or transfer the support plate 2 to a suitable installation position.

[0038] The embodiment of the present application discloses a method for assembling a portable switch cabinet for a fiber optic switch. Based on the above-mentioned portable switch cabinet for a fiber optic switch, the method comprises the following steps: S1. Assemble the cabinet 1, and arrange the exhaust fan 31 and the exhaust main pipe 32 in the cabinet 1, and then connect a plurality of exhaust branches 33 to the exhaust main pipe 32, and then connect the air intake main pipe 14 on the cabinet 1 to the fresh air system; S2. The corresponding number of multiple support plates 2 are mounted to the two front columns 11 and the two rear columns 12; S3. Connect the air cavity 21 of the support plate 2 with the corresponding exhaust branch pipe 33, and test the air tightness of the exhaust main pipe 32 and the air cavity 21 through the valve mechanism. After the test is completed, the bracket 23 of the support plate 2 is temporarily positioned by the front positioning member 6 to close the exhaust and heat dissipation function of the support plate 2; S4. Place a number of switches on a plurality of support plates 2 according to configuration requirements. Specifically, place the switches on the bracket 23, and then continue to push the bracket 23 inward so that the first magnetic body 51 on the bracket 23 is aligned with the second magnetic body 52 on the adsorption valve shell to activate the ventilation and heat dissipation function of the support plate 2.

[0039] The implementation principle of a portable switch cabinet for a fiber optic switch in the embodiment of the present application is as follows: After the switch is placed on the support plate 2, when the switch is working, the exhaust fan 31 is started, and the exhaust fan 31 exhausts air. With the help of multiple exhaust holes 22 on the support plate 2, the hot air on the switch can be sucked into the air cavity 21, and then converged into the exhaust main pipe 32 through the exhaust branch pipe 33, and finally discharged through the exhaust fan 31; at this time, the air pressure in the cabinet 1 is reduced, and the clean air with a lower temperature in the air intake main pipe 14 automatically enters the cabinet 1 under the action of air pressure, so that the efficient heat dissipation effect of the switch in the switch cabinet of this application can be achieved.

[0040] Furthermore, since each support plate 2 has the effect of exhausting and cooling, even when some switches are maintained after the cabinet door is opened, the cooling effect of other switches will not be affected. When no switch is placed on the support plate 2 or the switch is pulled out for maintenance, the bracket 23 is pulled forward to the first magnetic body 51 away from the second magnetic body 52. ​​At this time, the elastic deformation force of the reset spring 46 pushes the piston 44 downward in the valve cavity 411, and separates the first joint 42 and the second joint 43, so that the exhaust branch pipe 33 and the air cavity 21 of the support plate 2 are not connected, and the exhaust branch pipe 33 corresponding to the support plate 2 is disconnected from the valve, reducing the pneumatic heat dissipation loss, and slightly improving the heat dissipation effect of other switches in operation. In this way, the exhaust heat dissipation function on a single support plate 2 can be automatically turned on and off to reduce the impact on the exhaust heat dissipation efficiency of the remaining support plates 2.

[0041] Unless otherwise defined, the technical terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The words "first", "second", "third" and similar words used in the specification and claims of this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and similar words do not indicate a quantitative limit, but indicate that there is at least one. "Include" or "comprise" and similar words mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A portable switch cabinet for an optical fiber switch, comprising a cabinet body (1), a plurality of support plates (2), and two front columns (11) and two rear columns (12) vertically mounted in the cabinet body (1), wherein the front columns (11) and the rear columns (12) are each provided with a plurality of mounting holes (13) at intervals, characterized in that: The support plate (2) is detachably mounted on the two front pillars (11) and the two rear pillars (12); the support plate (2) has an air cavity (21) inside, and a plurality of air extraction holes (22) in communication with the air cavity (21) are formed on the upper end surface; The cabinet (1) is provided with an exhaust fan (31), an air inlet of the exhaust fan (31) is connected to an exhaust main pipe (32) extending into the cabinet (1), the exhaust main pipe (32) is connected to a plurality of exhaust branch pipes (33), and one end of the exhaust branch pipe (33) away from the exhaust main pipe (32) is in communication with the air cavity (21) on the supporting plate (2); The air extraction branch pipe (33) is provided with a valve mechanism, and the valve mechanism is used to achieve communication between the air extraction branch pipe (33) and the air cavity (21) only when a switch is placed in position on the support plate (2).

2. The portable switch cabinet for an optical fiber switch according to claim 1, characterized in that: Two parallel brackets (23) are slidably disposed on the support plate (2), and the two brackets (23) are used to jointly support a switch. The valve mechanism is configured to control the air extraction branch pipe (33) to be disconnected from the air cavity (21) when the bracket (23) supporting the switch slides out and when the bracket (23) has not completely moved into the cabinet (1) to a specified position.

3. The portable switch cabinet for an optical fiber switch according to claim 2, characterized in that: The valve mechanism comprises a valve sleeve (41) arranged on the air extraction branch pipe (33), and two opposite ends of the valve sleeve (41) are respectively provided with a first joint (42) connected to the air extraction branch pipe (33) and a second joint (43) connected to the air cavity (21); the valve sleeve (41) has a valve cavity (411) connected to both the first joint (42) and the second joint (43); a piston (44) is arranged in the valve cavity (411) in a lifting and sliding manner; when the piston (44) moves downward to the bottom stroke, it blocks the first joint (42) or the second joint (43); when the piston (44) moves upward, the first joint (42), the valve cavity (411) and the second joint (43) are connected; The valve mechanism also includes a control component for controlling the piston (44) to lift up when the bracket (23) moves into a specified position in the cabinet (1).

4. The portable switch cabinet for an optical fiber switch according to claim 3, characterized in that: The control assembly comprises a first magnetic body (51) fixedly connected to one end of the bracket (23) close to the rear column (12) and a second magnetic body (52) fixedly connected to the piston (44); a slide bar (45) penetrating through and extending outside the valve housing is fixedly connected to the piston (44); the second magnetic body (52) is fixedly connected to the outer end of the slide bar (45); the second magnetic body (52) and the first magnetic body (51) are magnetically attracted to each other; when the bracket (23) moves into a designated position in the cabinet (1), the first magnetic body (51) and the second magnetic body (52) are in contact with each other; A return spring (46) sleeved on the slide rod (45) is also provided between the piston (44) and the inner top wall of the valve housing.

5. The portable switch cabinet for an optical fiber switch according to claim 4, characterized in that: The depth of the bracket (23) is less than the depth of the supporting plate (2), and a front positioning member (6) for positioning the bracket (23) is provided at one end of the supporting plate (2) close to the front column (11); When the bracket (23) is positioned by the front positioning member (6), there is a gap between the first magnetic body (51) and the second magnetic body (52).

6. The portable switch cabinet for an optical fiber switch according to claim 2, characterized in that: The support plate (2) is provided with a silicone sheet (24) surrounding the outer sides of the plurality of air extraction holes (22); the vertical dimension of the silicone sheet (24) is not less than the distance between the bottom surface of the switch and the upper end surface of the support plate (2) when the switch is placed on the bracket (23).

7. A portable switch cabinet for a fiber optic switch according to any one of claims 1 to 6, characterized in that: A flow control plate (71) is attached to the upper end surface of the support plate (2), and a plurality of bimetallic strips (72) are fixedly connected to the flow control plate (71), the free ends of which extend into the air extraction holes (22). The bimetallic strips (72) are arranged obliquely at room temperature and semi-shield the air extraction holes (22). The upper layer of the bimetallic strips (72) is made of metal with a high thermal expansion coefficient, and the lower layer is made of metal with a low thermal expansion coefficient.

8. A portable switch cabinet for a fiber optic switch according to any one of claims 1 to 6, characterized in that: One end of the support plate (2) close to the rear pillar (12) is fixedly connected with two rear protrusions (81) corresponding to the two rear pillars (12), and one end of the support plate (2) close to the front pillar (11) is elastically provided with two front protrusions (82) corresponding to the two front pillars (11), and the rear protrusions (81) and the front protrusions (82) are both pluggable and compatible with the mounting holes (13).

9. The portable switch cabinet for an optical fiber switch according to claim 8, characterized in that: Two receiving grooves (25) are provided at one end of the support plate (2) close to the front column (11) for receiving the two front protrusions (82) respectively, an elastic member (83) is connected between the front protrusion (82) and the bottom wall of the receiving groove (25), and a guiding inclined surface (821) is provided on the upper end surface of the front protrusion (82).

10. A method for assembling a portable switch cabinet for a fiber optic switch, based on the portable switch cabinet for a fiber optic switch according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Assembling the cabinet (1), arranging the exhaust fan (31) and the exhaust main pipe (32) in the cabinet (1), and then connecting a plurality of exhaust branch pipes (33) to the exhaust main pipe (32); S2. Installing a corresponding number of the plurality of support plates (2) onto the two front pillars (11) and the two rear pillars (12); S3. Connecting the air cavity (21) of the support plate (2) to the corresponding air extraction branch pipe (33), and testing the air tightness of the connection between the air extraction main pipe (32) and the air cavity (21) through the valve mechanism; S4. Place a number of switches on a plurality of the supporting plates (2) according to configuration requirements.

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