Shell structure and network bridge thereof

Abstract

The utility model provides a housing structure, which relates to the technical field of bridge housings and comprises a fixed back plate, a bridge housing, a cover plate, a liquid diversion frame, a corrugated pipe and a sealing connection structure. An opening is formed in the lower end of the bridge shell, and a cover plate is adhered to the opening for shielding, so that internal devices are more convenient to disassemble and maintain, and meanwhile, a liquid flow guide frame is fixed at the lower end of the outer wall of the bridge shell, so that water drops sliding down along the side surface of the outer wall of the bridge shell are guided to be far away from the lower end of the bridge shell to be discharged; the leakproofness between the cover plate and the lower end opening of the bridge shell is enhanced through the sealing connection structure; the network cable and the power line penetrate through the corrugated pipe to be connected with the network port and the power connector of the bridge, water flow is prevented from entering the bridge shell along the connection gap of the network cable and the power line, the waterproof performance under the split type shell structure is guaranteed through mutual cooperation of the three protections, and the waterproof requirement in the external environment is met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of bridge shell, especially to a shell structure and bridge thereof. BACKGROUND

[0002] The description in this section is provided only for the purpose of summarizing the disclosure and is not to be construed as prior art.

[0003] Bridge is also called bridge, which is a kind of storage / forwarding device connecting two LANs, which can divide a large LAN into multiple segments, or interconnect more than two LANs into a logical LAN, so that all users on LAN can access the server.

[0004] The existing bridge shell part is designed as a whole structure, and the internal devices are not convenient to disassemble and maintain, which makes the later maintenance work very troublesome, and the corresponding split shell has the problem that water is easy to enter the installation gap, which affects the service life of the bridge in the external environment. INVENTION CONTENTS

[0005] The utility model discloses a shell structure and bridge thereof, adopt the bridge shell lower end opening, and paste the cover plate at the opening and shield this split shell, and on this basis, add three waterproof structures, so that the internal device disassembly and maintenance are more convenient, and the waterproof performance meets the waterproof demand in the external environment.

[0006] The utility model provides a shell structure, which comprises:

[0007] A bridge shell is detachably fixed on one side of the outer wall of the fixed back plate;

[0008] The bridge shell is designed with an opening at the lower end, and a cover plate is fixed on the opening of the bridge shell lower end;

[0009] The liquid flow guide frame is fixed on the three sides of the lower end of the outer wall of the bridge shell which is not attached to the fixed back plate;

[0010] The cover plate has a network cable and power line window on the bottom surface, and a corrugated pipe is inserted into the network cable and power line window in interference fit;

[0011] A sealing connection structure is arranged between the cover plate and the opening of the bridge shell lower end.

[0012] As a further optimization scheme, in order to guide the water droplets falling along the outer wall of the bridge shell to the position far away from the lower end of the bridge shell and discharge, and avoid the water flow entering the inside of the bridge shell along the opening gap of the lower end of the bridge shell, the liquid flow guide frame comprises:

[0013] A U-shaped frame is fixedly sleeved on the lower end of the outer wall of the bridge shell;

[0014] The U-shaped frame upper end is provided with a slope, and the inner side end is inclined upward;

[0015] The tip of the slope is replaced by a rubber section, and the inner side surface of the slope and the rubber section is attached to the outer wall of the electric bridge shell.

[0016] As a further optimization scheme, in order to improve the sealing performance of the cover plate clamped at the lower end opening of the electric bridge shell, the sealing connection structure comprises:

[0017] The top surface of the cover plate is fixedly provided with a plug block corresponding to the lower end opening of the electric bridge shell, which is inserted into the lower end opening of the electric bridge shell;

[0018] A first annular groove is formed in the inner wall of the lower end opening of the electric bridge shell, and a ring-shaped sealing ring is fixedly attached in the first annular groove;

[0019] A second annular groove is formed in the outer wall of the plug block corresponding to the first annular groove, and the inner side end of the ring-shaped sealing ring is inserted into the second annular groove in an interference fit.

[0020] As a further optimization scheme, in order to provide a detachable mounting platform for the electric bridge shell, the fixed back plate comprises:

[0021] A vertical plate, the outer wall of which is fixedly provided with a horizontal plate below the side of the electric bridge shell;

[0022] The liquid flow guide frame and the bottom surface of the cover plate are attached to the upper surface of the horizontal plate;

[0023] Uniform bolt through holes are formed in the edge of the vertical plate, and bolts are inserted through the bolt through holes and screwed with the edge of the electric bridge shell;

[0024] The horizontal plate is provided with a connecting through hole corresponding to the corrugated pipe, and the upper end of the corrugated pipe passes through the connecting through hole.

[0025] As a further optimization scheme, in order to facilitate the fixation of the device on the outer wall of the vertical rod on the ground, the upper and lower ends of the vertical plate are integrally formed with ear plates;

[0026] A U-shaped rod is inserted through the outer wall of the ear away from the side of the electric bridge shell, and external threads are formed in both ends of the U-shaped rod;

[0027] Fixed nuts are screwed on the external threads, and the number of fixed nuts is two;

[0028] The two fixed nuts on the external threads are respectively abutted on the left and right sides of the outer wall of the ear plate.

[0029] As a further optimization scheme, in order to improve the mechanical strength of the horizontal plate, reinforcing ribs are uniformly fixedly provided between the positions adjacent to the outer wall of the vertical plate along the length direction of the bottom surface of the horizontal plate.

[0030] As a further optimization scheme, in order to guide the water droplets falling along the liquid guide frame to the ground more quickly, the horizontal plate is uniformly provided with a liquid discharge groove on the three side edges not abutting with the vertical plate.

[0031] The inner side end of the liquid discharge groove extends to the outer wall of the liquid guide frame.

[0032] As a further optimization scheme, in order to protect the internal devices while having sufficient heat dissipation effect as the electric bridge shell, the electric bridge shell comprises:

[0033] The side wall of the heat-conducting metal shell body is uniformly fixedly provided with an inner threaded cylinder near the edge of the vertical plate.

[0034] The inner threaded cylinder is in one-to-one correspondence with the bolt through hole, and a bolt is screwed into the corresponding inner threaded cylinder.

[0035] As a further optimization scheme, in order to improve the heat dissipation effect of the heat-conducting metal shell body and avoid water droplets falling along the strip-shaped heat-conducting metal plate from passing through the shielding of the liquid guide frame body, the heat-conducting metal shell body is uniformly and longitudinally fixedly provided with a strip-shaped heat-conducting metal plate on the side away from the vertical plate.

[0036] A blocking block is fixedly provided between the positions of adjacent strip-shaped heat-conducting metal plates.

[0037] A network bridge adopts the shell structure.

[0038] Compared with the prior art, the shell structure and the network bridge have the following improvements and advantages:

[0039] The split shell formed by opening the lower end of the electric bridge shell and pasting a cover plate at the opening to shield makes it more convenient to disassemble and maintain the internal devices, and by fixing a liquid guide frame at the lower end of the outer wall of the electric bridge shell, water droplets falling along the side surface of the outer wall of the electric bridge shell are guided to the position away from the lower end of the electric bridge shell to be discharged, so as to avoid water flow entering the inside of the electric bridge shell through the gap of the lower end opening of the electric bridge shell, and the sealing connection structure enhances the airtightness between the cover plate and the lower end opening of the electric bridge shell. The wave tube is inserted into the wire and power line window of the cover plate in interference fit, the wire and power line pass through the wave tube and are connected with the network port and power connector of the electric bridge, so as to avoid water flow entering the inside of the electric bridge shell through the connection gap of the wire and power line, and the three protections cooperate to ensure the waterproof performance of the split shell structure and meet the waterproof demand in the external environment. BRIEF DESCRIPTION OF DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings needed in the description of the specific embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0041] Figure 1 It is a structural schematic diagram of the present application.

[0042] Figure 2 It is a structural schematic diagram of the bridge shell of the present application.

[0043] Figure 3 It is a structural schematic diagram of the present application Figure 2 It is an enlarged structural schematic diagram of A in the present application.

[0044] Figure 4 It is a structural schematic diagram of the fixed back plate of the present application.

[0045] Figure 5 It is a structural schematic diagram of the fixed back plate of the present application.

[0046] Figure 6 It is a structural schematic diagram of the bridge shell of the present application.

[0047] Explanation of reference signs:

[0048] 1-fixed back plate, 11-vertical plate, 12-horizontal plate, 13-bolt through hole, 14-ear plate, 15-U-shaped rod, 16-external thread, 17-connection through hole, 18-fixing nut, 19-reinforcing rib, 2-bridge shell, 21-heat-conducting metal shell main body, 22-strip-shaped heat-conducting metal plate, 23-internal thread cylinder, 3-corrugated pipe, 4-liquid flow guide frame, 41-U-shaped frame, 42-slope surface, 43-rubber section, 44-plugging block, 5-liquid discharge groove, 6-cover plate, 7-sealing connection structure, 71-plug, 72-first annular groove, 73-second annular groove, 74-annular sealing ring. DETAILED DESCRIPTION

[0049] The technical solutions of the present application will be described clearly and completely in combination with embodiments. Obviously, the described embodiments are some embodiments of the present application, but not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0050] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown based on the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0051] In the description of the utility model, it is understood that the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited. In addition, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0052] Please refer to Figures 1-6 The utility model provides technical scheme: a shell structure, comprising:

[0053] The outer wall of the fixed back plate 1 is detachably fixedly assembled with the electric bridge shell 2;

[0054] The electric bridge shell 2 is designed with an opening at the lower end, and the electric bridge shell 2 is fixedly pasted with a cover plate 6 at the lower end opening;

[0055] The three side surfaces of the electric bridge shell 2 outer wall lower end are fixedly sleeved with liquid flow guide frame 4 not matched with fixed back plate 1;

[0056] The cover plate 6 bottom surface is provided with a network cable and power line window, and the network cable and power line window are inserted with a bellows 3 in interference fit;

[0057] The cover plate 6 and the electric bridge shell 2 lower end opening are assembled with a sealing connection structure 7.

[0058] Specifically in this embodiment, the lower end of the bridge shell 2 is pasted with a cover plate 6 to form a split shell structure, so that the internal devices are more convenient to disassemble and maintain. The liquid flow guide frame 4 is fixed to the lower end of the outer wall of the bridge shell 2. Water droplets that slide along the outer wall of the bridge shell 2 are guided to the lower end of the bridge shell 2 to be discharged away from the opening, avoiding water flowing into the inside of the bridge shell 2 through the gap at the lower end of the bridge shell 2.

[0059] Further, the sealing connection structure 7 between the top surface of the cover plate 6 and the opening at the lower end of the bridge shell 2 is used to enhance the sealing of the cover plate 6, avoiding liquid entering the bridge shell 2 from the gap. The wave tube 3 is inserted into the window of the network cable and power cable on the cover plate 6 through interference fit. The network cable and power cable are connected to the network port and power connector of the bridge through the wave tube 3, avoiding water flowing into the inside of the bridge shell 2 through the gap of the network cable and power cable connection.

[0060] More specifically, the liquid flow guide frame 4 guides the water droplets that slide along the outer wall of the bridge shell 2 away from the cover plate 6. Even if a small amount of water vapor enters from the installation gap of the cover plate 6, the sealing connection structure 7 will block this part of the water vapor outside. Finally, the wave tube 3 is set outside the network cable and power cable to block the last gap of water entering the bridge shell 2.

[0061] It can be understood that the bridge shell 2 is detachably fixed to the fixed back plate 1, and the device is conveniently fixed to other objects such as support columns, walls, etc. through the fixed back plate 1.

[0062] In some embodiments, the liquid flow guide frame 4 includes:

[0063] The U-shaped frame 41 is fixedly sleeved to the lower end of the outer wall of the bridge shell 2.

[0064] The upper end of the U-shaped frame 41 is provided with a slope surface 42, and the inner side of the slope surface 42 is inclined upward.

[0065] The tip of the slope surface 42 is replaced by a rubber section 43, and the inner sides of the slope surface 42 and the rubber section 43 are attached to the outer wall of the bridge shell 2.

[0066] Specifically in this embodiment, after the water droplets slide along the outer wall of the bridge shell 2, they slide along the slope surface 42 to the outer wall of the U-shaped frame 41, and then slide along the outer wall of the U-shaped frame 41 to the opening away from the lower end of the bridge shell 2.

[0067] Further, the tip of the slope surface 42 is replaced by a rubber section 43, which better attaches to the outer wall of the bridge shell 2, avoiding water flowing along this gap to the opening at the lower end of the bridge shell 2.

[0068] It can be understood that the opening of the U-shaped frame 41 is located near the fixed back plate 1. The side of the bridge shell 2 attached to the outer wall of the fixed back plate 1 will not have water droplets flowing down.

[0069] In some embodiments, the sealing connection structure 7 comprises:

[0070] The top surface of the cover plate 6 is fixedly fitted with a plug 71 corresponding to the lower end opening of the bridge shell 2, which is inserted into the lower end opening of the bridge shell 2;

[0071] The inner wall of the lower end opening of the bridge shell 2 is provided with a first annular groove 72, and a ring-shaped sealing ring 74 is fixedly attached in the first annular groove 72;

[0072] The outer wall of the plug 71 is provided with a second annular groove 73 corresponding to the first annular groove 72, and the inner side end of the ring-shaped sealing ring 74 is inserted into the second annular groove 73 in an interference fit.

[0073] In this embodiment, the plug 71 fixedly inserted into the lower end opening of the bridge shell 2 is attached to the outer wall of the plug 71 and the inner wall of the lower end opening of the bridge shell 2 for sealing;

[0074] Further, the ring-shaped sealing ring 74 is fixed in the first annular groove 72 of the inner wall of the lower end opening of the bridge shell 2, and the inner side end of the ring-shaped sealing ring 74 extends out of the first annular groove 72 and is inserted into the second annular groove 73 of the outer wall of the plug 71, improving the airtightness between the plug 71 and the inner wall of the lower end opening of the bridge shell 2;

[0075] More specifically, the inner side end of the ring-shaped sealing ring 74 is inserted into the second annular groove 73 and is pressed to deform and fill in the second annular groove 73 in an interference fit, improving the airtightness of the connection;

[0076] It can be understood that the outer side end of the ring-shaped sealing ring 74 is attached in the first annular groove 72, which can be torn off by force, and a new ring-shaped sealing ring 74 can be attached after applying new glue, completing the replacement of the aging ring-shaped sealing ring 74.

[0077] In some embodiments, the fixed back plate 1 comprises:

[0078] The outer wall of the vertical plate 11 is fixedly fitted with a horizontal plate 12 near the lower side of the bridge shell;

[0079] The bottom surface of the liquid flow guide frame 4 and the cover plate 6 is attached to the upper surface of the horizontal plate 12;

[0080] Uniformly provided on the edge of the vertical plate 11 are bolt through holes 13, and the bolts through the bolt through holes 13 are screwed to the edge of the bridge shell 2;

[0081] The horizontal plate 12 is provided with a connecting through hole 17 corresponding to the corrugated pipe 3, and the upper end of the corrugated pipe 3 passes through the corresponding connecting through hole 17.

[0082] Specifically in this embodiment, bolt through holes 13 are formed in the edges of the vertical plate 11, and bolts are passed through the bolt through holes 13 to be screwed with the edges of the bridge shell 2 to fix and connect the bridge shell 2, and all the bolts can be removed for disassembly;

[0083] Further, the horizontal plate 12 fixed at the lower end of the outer wall of the vertical plate 11 is used to support the lower end of the bridge shell 2, and plays an auxiliary fixing role;

[0084] More specifically, after the bottom surface of the cover plate 6 is attached to the horizontal plate 12, the cover plate 6 is shielded by the horizontal plate 12, further avoiding water from entering the bridge shell 2 through the gaps of the cover plate 6, and the bottom surface of the liquid guide frame 4 is attached to the horizontal plate 12 without leaving gaps, and the water flow discharged along the liquid guide frame 4 is discharged outward along the horizontal plate 12;

[0085] It can be understood that the outer diameter of the corrugated pipe 3 is the same as the inner diameter of the connecting through hole 17 to avoid water passing through the gap therebetween, and the lowermost end of the corrugated pipe 3 is designed to be closed and wrapped around the outer wall of the network cable and the power cable to avoid water entering from the inside of the corrugated pipe 3.

[0086] In some embodiments, the ear plates 14 are integrally formed in the middle of the upper and lower ends of the vertical plate 11;

[0087] U-shaped rods 15 are passed through the outer wall of the ear plate 14 away from the bridge shell 2, and outer threads 16 are formed on both ends of the U-shaped rods 15;

[0088] Two fixing nuts 18 are screwed on the outer threads 16.

[0089] The two fixing nuts 18 on the outer threads 16 are respectively abutted on the left and right sides of the outer wall of the ear plate 14.

[0090] In some embodiments, the reinforcing ribs 19 are uniformly fixed and assembled between the positions adjacent to the vertical plate 11 along the length direction of the bottom surface of the horizontal plate 12.

[0091] Specifically in this embodiment, the ear plate 14 is provided with reserved through holes, and the reserved through holes can pass through expansion bolts to be fixed with the wall;

[0092] Further, the U-shaped rods 15 are passed through the reserved through holes of the ear plate 14, and two fixing nuts 18 are screwed on the threads 16 at the ends of the U-shaped rods 15, and the two U-shaped rods 15 are sleeved on the outer wall of the fixed stand, and the positions of the two fixing nuts 18 are adjusted to clamp the stand between the U-shaped rods 15 and the ear plate 14 to achieve the fixing effect.

[0093] In some embodiments, the liquid discharge grooves 5 are uniformly formed in the upper edges of the three sides of the horizontal plate 12 which are not attached to the vertical plate 11;

[0094] The inner end of the liquid drainage groove 5 extends to the outer wall of the liquid guide frame 4, and the drainage through the liquid drainage groove 5 more quickly guides the water droplets falling along the liquid guide frame 4 to the ground.

[0095] In some embodiments, the electric bridge shell 2 comprises:

[0096] The side wall of the heat-conducting metal shell body 21 is uniformly fixedly equipped with an inner threaded cylinder 23 near the edge of the vertical plate 11;

[0097] The inner threaded cylinder 23 is in one-to-one correspondence with the bolt through hole 13, and a bolt is screwed into the corresponding inner threaded cylinder 23 through the bolt through hole 13, and the bolt can be disassembled from the inner threaded cylinder 23.

[0098] In some embodiments, the outer wall of the heat-conducting metal shell body 21 is uniformly and longitudinally fixedly equipped with a strip-shaped heat-conducting metal plate 22 away from the side of the vertical plate 11;

[0099] The position between adjacent strip-shaped heat-conducting metal plates 22 is fixedly equipped with a blocking block 44 at the lower end.

[0100] In particular, in the present embodiment, the strip-shaped heat-conducting metal plate 22 increases the heat dissipation area and improves the heat dissipation effect of the heat-conducting metal shell body 21;

[0101] Further, the blocking block 44 blocks the gap between adjacent strip-shaped heat-conducting metal plates 22, and blocks the water droplets falling along the strip-shaped heat-conducting metal plate 22, so as to avoid the water droplets falling along the strip-shaped heat-conducting metal plate 22 from penetrating the main body of the liquid guide frame 4;

[0102] It can be understood that the upper end of the blocking block 44 is a slope, and the slope is inclined towards the main body of the liquid guide frame 4, so as to more quickly guide the water flow outward.

[0103] A network bridge adopts the shell structure described above to shield and protect the internal devices, has good heat dissipation performance and waterproof performance, and when the internal devices need to be overhauled and maintained, the cover plate pasted at the lower end of the electric bridge shell can be disassembled, the overhauling and maintenance are convenient, and when reinstalled, the cover plate can be reset by reapplying adhesive on the upper edge of the cover plate.

[0104] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A shell structure, characterized in that, include: A fixed backplate (1) has a bridge housing (2) detachably fixed on one side of its outer wall. The lower end of the bridge housing (2) is designed with an opening, and a cover plate (6) is pasted and fixed to the lower end of the bridge housing (2). Liquid guide frames (4) are fixedly sleeved on the three sides of the outer wall of the bridge housing (2) that are not in contact with the fixed back plate (1). The bottom surface of the cover plate (6) is provided with a network cable and power cable window, and a corrugated pipe (3) is inserted into the network cable and power cable window with an interference fit. A sealing connection structure (7) is fitted between the cover plate (6) and the lower opening of the bridge housing (2).

2. The shell structure according to claim 1, characterized in that, The liquid guide frame (4) includes: The U-shaped frame (41) is fixedly sleeved on the lower end of the outer wall of the bridge housing (2); The upper end of the U-shaped frame (41) is provided with a slope (42), and its inner end is inclined upward; The tip of the slope (42) is replaced by a rubber segment (43), and the inner surfaces of the slope (42) and the rubber segment (43) are in contact with the outer wall of the bridge housing (2).

3. The shell structure according to claim 1, characterized in that, The sealed connection structure (7) includes: The top surface of the cover plate (6) is fixedly fitted with a plug (71) corresponding to the lower opening of the bridge housing (2), which is inserted into the lower opening of the bridge housing (2); The lower end opening of the bridge housing (2) has a first annular groove (72) on the inner wall, and an annular sealing ring (74) is attached and fixed in the first annular groove (72). The outer wall of the plug (71) is provided with a second annular groove (73) corresponding to the first annular groove (72), and the inner end of the annular sealing ring (74) is inserted into the second annular groove (73) in an interference fit.

4. The shell structure according to claim 1, characterized in that, The fixed back plate (1) includes: A vertical plate (11) has a horizontal plate (12) fixedly mounted on its outer wall near the lower side of the bridge housing. The bottom surfaces of the liquid guide frame (4) and the cover plate (6) are attached to the upper surface of the horizontal plate (12); The vertical plate (11) has bolt through holes (13) evenly distributed at its edge, and bolts are threaded through the bolt through holes (13) and screwed to the edge of the bridge housing (2); The horizontal plate (12) has a connecting through hole (17) corresponding to the corrugated pipe (3), and the upper end of the corrugated pipe (3) passes through the corresponding connecting through hole (17).

5. The shell structure according to claim 4, characterized in that, The upper and lower ends of the vertical plate (11) are integrally formed with ear plates (14). A U-shaped rod (15) is passed through the outer wall of the ear plate (14) on the side away from the bridge housing (2), and both ends of the rod are provided with external threads (16). Two fixing nuts (18) are screwed onto the external thread (16); The two fixing nuts (18) on the external thread (16) abut against the left and right sides of the outer wall of the ear plate (14).

6. The shell structure according to claim 4, characterized in that, The bottom surface of the horizontal plate (12) is uniformly fixed with reinforcing ribs (19) between the adjacent sides of the outer wall of the vertical plate (11) along the length direction.

7. The shell structure according to claim 4, characterized in that, The horizontal plate (12) has drainage grooves (5) evenly distributed on the upper edges of its three sides that are not attached to the vertical plate (11). The inner end of the drainage groove (5) extends to the outer wall of the liquid guide frame (4).

8. The shell structure according to claim 4, characterized in that, The bridge housing (2) includes: The thermally conductive metal outer shell body (21) has internally threaded cylinders (23) uniformly fixedly assembled on its side wall near the edge of the vertical plate (11). The position of the internal threaded cylinder (23) corresponds one-to-one with the bolt through hole (13), and the bolt through hole (13) is screwed into the corresponding internal threaded cylinder (23).

9. The shell structure according to claim 8, characterized in that, The outer wall of the thermally conductive metal outer shell body (21) is uniformly and longitudinally fixedly fitted with strip-shaped thermally conductive metal plates (22) on the side away from the vertical plate (11). A sealing block (44) is fixedly installed at the lower end between adjacent strip-shaped heat-conducting metal plates (22).

10. A network bridge, characterized in that, Includes the shell structure as described in any one of claims 1-9.

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