Cable branch box

Abstract

The invention relates to a cable branch box, and relates to the technical field of branch boxes, the cable branch box comprises a box body and a box door installed on the box body, and the vertical side surface of the box body is provided with a heat dissipation port; an upper protective cover with an upward opening is fixedly arranged on the inner edge of the opening of the heat dissipation opening of the box body, a lower protective cover with a downward opening is fixedly arranged on the outer edge of the opening of the heat dissipation opening of the box body, a barrier plate is fixedly arranged on the edge of the opening of the lower protective cover, and a plurality of barrier holes are formed in the barrier plate; according to the cable branch box, in the application process of the cable branch box, the possibility that external impurities enter the box body is reduced through the arrangement of the upper protective cover, the lower protective cover and the blocking holes; and high-temperature gas in the box body can be discharged to the outside through the heat dissipation openings and the blocking holes, so that circulation of gas inside and outside the box body is realized, and the heat dissipation performance of the box body is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of cable branch boxes, and in particular to a cable branch box. Background Art

[0002] Cable branch boxes play a key role in connecting different circuits and cables of different voltage levels and uses in the same circuit in the power system. At the same time, they can arrange the cables in an orderly manner, improving the neatness and operating efficiency of the power system. With the acceleration of the cableization process of the distribution network, cable branch boxes have been widely used in urban power grid transformation and new construction projects due to their full insulation, full sealing, corrosion resistance, maintenance-free, and highly safe and reliable characteristics.

[0003] However, in the actual application of cable branch boxes, a technical problem gradually emerged: the conventional cable branch box design includes a box body, a door, and a large number of cables and devices inside. These cables and devices generate a lot of heat during the transmission and operation of current. In order to solve this problem, heat dissipation ports are usually opened on the box body to ensure its heat dissipation performance and prevent equipment failure caused by excessive internal temperature.

[0004] But the problem is that cable branch boxes are mostly used in outdoor environments. In windy or rainy weather conditions, dust or rain from the outside may enter the box through the heat dissipation holes on the box. This may not only pollute the internal cables and equipment, but may also cause poor contact at the cable joints, leading to short circuits and other problems. There is room for improvement. Summary of the invention

[0005] The purpose of the present application is to provide a cable branch box to solve the problem in the above-mentioned related art that when the cable branch box is used outdoors, dust or rainwater from the outside may enter the box, posing a safety hazard.

[0006] The present application provides a cable branch box adopting the following technical solution: A cable branch box comprises a box body and a box door installed on the box body, wherein a heat dissipation port is provided on a vertical side surface of the box body; an upper protective cover with an opening facing upward is fixedly provided on the inner edge of the opening of the heat dissipation port of the box body, and a lower protective cover with an opening facing downward is fixedly provided on the outer edge of the opening of the heat dissipation port of the box body; a blocking plate is fixedly provided on the opening edge of the lower protective cover, and a plurality of blocking holes are provided on the blocking plate.

[0007] By adopting the above technical scheme, during the application of the cable branch box, the possibility of external impurities entering the box body is reduced through the upper protective cover, the lower protective cover and the barrier holes; and the higher temperature gas inside the box body can be discharged to the outside through the heat dissipation port and the barrier holes, thereby realizing the circulation of gas inside and outside the box and ensuring its heat dissipation performance.

[0008] Optionally, a base is provided under the box body, a hydraulic lifting rod is fixedly provided on the upper surface of the base, the bottom side of the box body is fixedly connected to the upper end of the hydraulic lifting rod, and a control rod for controlling the lifting and lowering adjustment of the hydraulic lifting rod is provided on the outer periphery of the hydraulic lifting rod.

[0009] By adopting the above technical solution, due to the coordinated arrangement of the hydraulic lifting rod and the control rod, when it is windy or rainy outside, the box can be moved upward relative to the base, reducing the possibility of rainwater seeping into the interior from the bottom of the box.

[0010] Optionally, a plurality of positioning rods are fixedly provided on the upper surface of the base in the vertical direction, and one side of the positioning rods can abut against the vertical outer side surface of the box body.

[0011] By adopting the above technical solution, due to the setting of the positioning rod on the base, when the box is moved up and down for adjustment, one side of the positioning rod is tightly fitted against the vertical outer side surface of the box, reducing the possibility of deflection or misalignment when the box is slid up and down for adjustment.

[0012] Optionally, a heat conduction port is provided on the inner wall of the box body, and a heat conduction fan located above the heat conduction port is fixedly provided on the bottom side of the interior of the box body.

[0013] By adopting the above technical solution, when the cable branch box is used, the heat-conducting fan can be started to draw the external gas into the box from the heat-conducting port on the bottom side of the box, and then the higher temperature gas in the box is discharged from the heat dissipation port, thereby accelerating the exchange of gas inside and outside the box and further improving the heat dissipation performance of the cable branch.

[0014] Optionally, a sealing plate is slidably provided on the bottom side of the box body, and a sealing hole is opened on the sealing plate which can overlap or be offset with the heat conduction port. A compression spring in a compressed state is fixedly provided on the side of the sealing plate away from the positioning rod, and a protruding block fixedly connected to the other end of the compression spring is fixedly provided on the bottom side of the box body; the positioning rod is fixedly provided with a locking plate along its own length direction, and a locking inclined surface is fixedly provided on the side of the locking plate facing the base, and the sealing plate can abut against the locking inclined surface under the pressure of the compression spring.

[0015] By adopting the above technical solution, when it is windy or rainy outside, the box is moved upward for a certain height relative to the base until one side of the sealing plate abuts against the side of the locking plate facing the sealing plate. At this time, the sealing plate as a whole moves away from the positioning rod, and the sealing hole and the heat conduction port are misaligned, thereby blocking the heat conduction port to prevent external dust or rainwater from entering the box through the heat conduction port; when the outside weather is normal, the box is moved downward. During this process, under the compression of the compression spring, the sealing plate as a whole moves toward the positioning rod, so that the sealing hole and the heat conduction port coincide with each other, so that it can dissipate heat normally.

[0016] Optionally, a blocking plate is slidably provided on the side of the blocking plate away from the lower protective cover, and a blocking hole is opened on the blocking plate which can overlap or be misaligned with the blocking hole; an adjusting part is provided on the positioning rod for controlling the sliding of the blocking plate relative to the blocking plate; when the box body moves upward, the adjusting part can control the misalignment of the blocking hole and the blocking hole.

[0017] By adopting the above technical solution, when it is windy or rainy outside, the box body is moved up a certain height, and the adjusting part can control the misalignment of the blocking hole and the blocking hole to block the blocking hole; when the outside weather is normal, the box body is moved down a certain distance to make the blocking hole and the blocking hole overlap, so that the internal and external gases can be exchanged normally.

[0018] Optionally, a support block at the same height as the blocking plate is fixedly provided on the outer surface of the box body, and the adjusting member includes a spring and an adjusting block; two ends of the spring are respectively fixedly connected to the support block and the blocking plate close to each other, and the spring can squeeze the blocking plate to slide in a direction close to the positioning rod; the adjusting block is fixed on the side of the positioning rod facing the blocking plate, and the side edge of the adjusting block facing the base is provided with a guiding inclined surface that can abut against the side edge of the blocking plate.

[0019] By adopting the above technical solution, when the box body moves up a certain height, the blocking plate slides along the guiding slope under the pressure of the spring to a state of abutment with the adjustment plate. In this state, the blocking hole and the blocking hole are misaligned, thereby completely blocking the opening of the lower protective cover; when the box body moves down a certain distance, under the pressure of the spring, the blocking plate moves toward the direction close to the positioning rod. In this state, the blocking hole and the blocking hole coincide with each other.

[0020] Optionally, a limit block is fixedly provided on the outer surface of the box body, and a limit through hole is opened on the limit block for the positioning rod to pass through and slide.

[0021] By adopting the above technical solution, during the upward and downward sliding process of the box body, the positioning rod is further limited due to the setting of the limiting block, thereby enhancing the stability of the box body during the sliding process relative to the positioning rod.

[0022] Optionally, the side of the adjustment block away from the base can abut against the side of the limiting block facing the base.

[0023] By adopting the above technical solution, the adjustment block can abut against one side of the limiting plate, thereby limiting the downward movement of the box.

[0024] Optionally, a shock-absorbing pad is fixedly provided on the side of the adjustment block away from the base.

[0025] By adopting the above technical solution, due to the provision of the shock-absorbing pad, when the adjusting block abuts against the limiting block, the shock-absorbing pad on the adjusting block abuts against the lower side of the limiting block, thereby reducing the possibility of damage to the adjusting block and the limiting block due to direct collision when they are close to each other.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 1. Through the setting of the upper protective cover, the lower protective cover and the barrier hole, the possibility of external impurities entering the box body is reduced during the application of the cable branch box; and the high-temperature gas inside the box body can be discharged to the outside through the heat dissipation port and the barrier hole, so as to realize the circulation of gas inside and outside the box and ensure its heat dissipation performance.

[0027] 2. When it is windy or rainy outside, move the box upwards for a certain height relative to the base until one side of the sealing plate abuts against the side of the locking plate facing the sealing plate. At this time, the sealing plate as a whole moves away from the positioning rod, and the sealing hole and the heat conduction port are misaligned, thereby blocking the heat conduction port; the blocking plate moves synchronously, so that the blocking hole and the blocking hole are misaligned, thereby completely blocking the opening of the lower protective cover; When the outside weather is normal, move the box downward. During this process, under the compression of the compression spring, the sealing plate moves as a whole toward the direction close to the positioning rod, so that the sealing hole coincides with the heat conduction port; under the compression of the spring, the blocking plate simultaneously moves toward the direction close to the positioning rod, and in this state the blocking hole coincides with the blocking hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 2 It is a schematic cross-sectional structure diagram of the installation and matching of the upper protective cover and the lower protective cover in the embodiment of the present application; Figure 3 yes Figure 2 A magnified schematic diagram of part A; Figure 4 It is a partial cross-sectional structural schematic diagram of the sealing plate installation and matching in the embodiment of the present application; Figure 5 It is a partial cross-sectional structural schematic diagram of the locking plate installation cooperation in the embodiment of the present application; Figure 6 It is a partial cross-sectional structural schematic diagram of the embodiment of the present application embodying the installation and coordination of the blocking plate; Figure 7 It is a schematic diagram of a partial cross-sectional structure of the installation and cooperation of the adjusting member according to the embodiment of the present application.

[0030] In the figure, 1, box body; 11, heat dissipation port; 12, upper protective cover; 13, lower protective cover; 14, baffle plate; 141, baffle hole; 15, heat conduction port; 16, protruding block; 17, supporting block; 18, limiting block; 181, limiting through hole; 2, box door; 3, base; 31, hydraulic lifting rod; 32, control rod; 33, positioning rod; 34, locking plate; 341, locking slope; 4, heat conduction fan; 5, sealing plate; 51, sealing hole; 52, compression spring; 6, blocking plate; 61, blocking hole; 7, adjusting member; 71, spring; 72, adjusting block; 721, guide slope; 722, shock pad. DETAILED DESCRIPTION

[0031] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0032] Example: Reference Figure 1 , Figure 2 and Figure 3 A cable branch box comprises a box body 1 and a box door 2 mounted on the box body 1, wherein one vertical edge of the box door 2 is hinged to the box body 1, and the other vertical edge is detachably connected to the box body 1 through a conventional lock structure; and heat dissipation ports 11 are provided on two opposite vertical side surfaces of the box body 1; An upper protective cover 12 with an upward opening is fixedly provided on the inner edge of the opening of the heat dissipation opening 11 of the box body 1, and a lower protective cover 13 with a downward opening is fixedly provided on the outer edge of the opening of the heat dissipation opening 11 of the box body 1. A blocking plate 14 is fixedly provided on the opening edge of the lower protective cover 13, and a plurality of blocking holes 141 are evenly opened on the blocking plate 14; The higher temperature gas inside the box 1 can be discharged to the outside through the heat dissipation port 11 and the blocking hole 141, so as to realize the circulation of gas inside and outside the box 1, and reduce the possibility of external impurities entering the inside of the box 1 through the upper protective cover 12, the lower protective cover 13 and the blocking hole 141.

[0033] Refer to 1 and Figure 2 A base 3 is provided below the box body 1, a hydraulic lifting rod 31 is fixedly provided on the upper surface of the base 3, the bottom side of the box body 1 is fixedly connected to the upper end of the hydraulic lifting rod 31, and a control rod 32 for controlling the lifting and lowering adjustment of the hydraulic lifting rod 31 is provided on the outer periphery of the hydraulic lifting rod 31; wherein the hydraulic lifting rod 31 is a conventional automatic lifting structure, which is mostly used in office chairs, and its specific internal structure is not repeated here; Four positioning rods 33 are fixedly provided on the base 3 in the vertical direction. After the base 3 is installed, one side of the positioning rod 33 can abut against the vertical outer side surface of the box body 1, thereby reducing the possibility of deflection or misalignment when the box body 1 slides up and down.

[0034] Reference Figure 2 and Figure 4A plurality of heat-conducting ports 15 are provided on the bottom side of the box body 1, wherein a heat-conducting fan 4 is fixedly provided on the bottom side of the box body 1 and is located above the heat-conducting ports 15; the heat-conducting fan 4 can be started to draw external air into the box body 1 from the heat-conducting ports 15 on the bottom side of the box body 1, and then the air with a higher temperature in the box body 1 is discharged from the heat-dissipating ports 11, thereby accelerating the exchange of air inside and outside the box body 1.

[0035] Reference Figure 4 and Figure 5 A sealing plate 5 is slidably provided on the bottom side of the box body 1, and a sealing hole 51 is opened on the sealing plate 5, which can overlap or be misaligned with the heat conducting port 15. A compression spring 52 in a compressed state is fixedly provided on the side of the sealing plate 5 away from the positioning rod 33, and a protruding block 16 fixedly connected to the other end of the compression spring 52 is fixedly provided on the bottom side of the box body 1; the positioning rod 33 is fixedly provided with a locking plate 34 along its length direction, and a locking inclined surface 341 is fixedly provided on the side of the locking plate 34 facing the base 3; When it is windy or rainy outside, the box body 1 is moved upward relative to the base 3. In the initial state, the sealing plate 5 abuts against the side of the positioning rod 33. When it continues to move upward, the sealing plate 5 abuts against the locking inclined surface 341 under the pressure of the compression spring 52 until one side of the sealing plate 5 abuts against the side of the locking plate 34 toward the sealing plate 5. At this time, the sealing plate 5 as a whole moves away from the positioning rod 33, and the sealing hole 51 and the heat conduction port 15 are misaligned, thereby blocking the heat conduction port 15; when the outside weather is normal, the box body 1 is moved downward. During this process, under the pressure of the compression spring 52, the sealing plate 5 as a whole moves toward the positioning rod 33, so that the sealing hole 51 and the heat conduction port 15 coincide with each other.

[0036] Reference Figure 6 and Figure 7 A blocking plate 6 is slidably provided on the side of the blocking plate 14 away from the lower protective cover 13, and a blocking hole 61 is opened on the blocking plate 6, which can overlap or be misaligned with the blocking hole 141; an adjusting member 7 is provided on the positioning rod 33 to control the sliding of the blocking plate 6 relative to the blocking plate 14; when the box body 1 moves up a certain height, the adjusting member 7 can control the misalignment of the blocking hole 141 and the blocking hole 61; when the box body 1 moves down a certain distance, the blocking hole 141 and the blocking hole 61 overlap.

[0037] Reference Figure 7 The adjusting member 7 includes a spring 71 and an adjusting block 72. A supporting block 17 at the same height as the blocking plate 6 is fixedly provided on the outer surface of the box body 1. The two ends of the spring 71 are respectively fixedly connected to the supporting block 17 and the blocking plate 6 so as to be close to each other. The spring 71 can squeeze the blocking plate 6 to slide in the direction close to the positioning rod 33; the adjusting block 72 is fixedly provided on the side of the positioning rod 33 facing the blocking plate 6, and a guiding inclined surface 721 which can abut against the side edge of the blocking plate 6 is provided on the side edge of the adjusting block 72 facing the base 3; When the box body 1 moves up a certain height, the blocking plate 6 slides along the guiding slope 721 to a state of abutting against the adjusting plate. In this state, the blocking hole 61 and the blocking hole 141 are misaligned, thereby completely blocking the opening of the lower protective cover 13; when the box body 1 moves down a certain distance, under the pressure of the spring 71, the blocking plate 6 moves toward the direction close to the positioning rod 33. In this state, the blocking hole 61 and the blocking hole 141 coincide with each other.

[0038] Reference Figure 7 A limit block 18 is fixedly provided on the outer surface of the box body 1, wherein the limit block 18 is provided with a limit through hole 181 for the positioning rod 33 to pass through and slide; and the side of the adjustment block 72 away from the base 3 can abut against the side of the limit block 18 facing the base 3, and a shock-absorbing pad 722 made of rubber material is fixedly provided on the side of the adjustment block 72 away from the base 3; thereby, the guide limit of the positioning rod 33 during the sliding process is realized, and at the same time, the downward sliding travel range of the box body 1 is limited by the cooperation of the limit block 18 and the adjustment block 72.

[0039] The implementation principle of the embodiment of the present application is: When it is windy or rainy outside, the box body 1 is moved upward for a certain height relative to the base 3 until one side of the sealing plate 5 abuts against the side of the locking plate 34 facing the sealing plate 5. At this time, the sealing plate 5 as a whole moves away from the positioning rod 33, and the sealing hole 51 is misaligned with the heat conducting port 15, thereby blocking the heat conducting port 15; the blocking plate 6 moves synchronously, so that the blocking hole 61 is misaligned with the blocking hole 141, thereby completely blocking the opening of the lower protective cover 13; When the outside weather is normal, the box body 1 is moved downward. During this process, under the pressure of the compression spring 52, the sealing plate 5 as a whole moves toward the direction close to the positioning rod 33, so that the sealing hole 51 coincides with the heat conduction port 15; under the pressure of the spring 71, the blocking plate 6 synchronously moves toward the direction close to the positioning rod 33. In this state, the blocking hole 61 coincides with the blocking hole 141.

[0040] Unless otherwise defined, the 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 "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" 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.

[0041] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cable branch box, comprising a box body (1) and a box door (2) mounted on the box body (1), wherein a heat dissipation port (11) is provided on a vertical side surface of the box body (1); It is characterized in that The box body (1) is fixedly provided with an upper protective cover (12) with an opening facing upward on the inner edge of the opening of the heat dissipation port (11), and a lower protective cover (13) with an opening facing downward is fixedly provided on the outer edge of the opening of the heat dissipation port (11). A blocking plate (14) is fixedly provided on the opening edge of the lower protective cover (13), and a plurality of blocking holes (141) are provided on the blocking plate (14).

2. A cable branch box according to claim 1, characterized in that: A base (3) is provided below the box body (1), a hydraulic lifting rod (31) is fixedly provided on the upper surface of the base (3), the bottom side of the box body (1) is fixedly connected to the upper end of the hydraulic lifting rod (31), and a control rod (32) for controlling the lifting and lowering adjustment of the hydraulic lifting rod (31) is provided on the outer periphery of the hydraulic lifting rod (31).

3. A cable branch box according to claim 2, characterized in that: A plurality of positioning rods (33) are fixedly arranged on the upper surface of the base (3) in a vertical direction, and one side of the positioning rods (33) can abut against the vertical outer side surface of the box body (1).

4. A cable branch box according to claim 3, characterized in that: A heat conduction port (15) is provided on the inner wall of the box body (1), and a heat conduction fan (4) located above the heat conduction port (15) is fixedly provided on the bottom side of the box body (1).

5. A cable branch box according to claim 4, characterized in that: A sealing plate (5) is slidably provided on the bottom side of the box body (1), and a sealing hole (51) is provided on the sealing plate (5) that can overlap or be offset with the heat conduction port (15). A compression spring (52) in a compressed state is fixedly provided on the side of the sealing plate (5) away from the positioning rod (33), and a protruding block (16) fixedly connected to the other end of the compression spring (52) is fixedly provided on the bottom side of the box body (1); The positioning rod (33) is fixedly provided with a locking plate (34) along its length direction, and the locking plate (34) is fixedly provided with a locking inclined surface (341) on the side facing the base (3), and the sealing plate (5) can abut against the locking inclined surface (341) under the pressure of the compression spring (52).

6. A cable branch box according to claim 3, characterized in that: A blocking plate (6) is slidably provided on the side of the blocking plate (14) away from the lower protective cover (13), and a blocking hole (61) is provided on the blocking plate (6) that can overlap or be misaligned with the blocking hole (141); The positioning rod (33) is provided with an adjusting member (7) for controlling the blocking plate (6) to slide relative to the blocking plate (14); when the box body (1) moves upward, the adjusting member (7) can control the blocking hole (141) and the blocking hole (61) to be misaligned.

7. A cable branch box according to claim 6, characterized in that: A support block (17) is fixedly provided on the outer side surface of the box body (1) and is at the same height as the blocking plate (6); the adjusting member (7) comprises a spring (71) and an adjusting block (72); The two ends of the spring (71) are respectively fixedly connected to the support block (17) and the sealing plate (6) so as to be close to each other, and the spring (71) can press the sealing plate (6) to slide in a direction close to the positioning rod (33); the adjustment block (72) is fixedly arranged on the side of the positioning rod (33) facing the sealing plate (6), and the side edge of the adjustment block (72) facing the base (3) is provided with a guiding inclined surface (721) capable of abutting against the side edge of the sealing plate (6).

8. A cable branch box according to claim 7, characterized in that: A limit block (18) is fixedly provided on the outer surface of the box body (1), and a limit through hole (181) is provided on the limit block (18) for the positioning rod (33) to pass through and slide.

9. A cable branch box according to claim 8, characterized in that: The side surface of the adjustment block (72) away from the base (3) can abut against the side surface of the limit block (18) facing the base (3).

10. A cable branch box according to claim 9, characterized in that: A shock-absorbing pad (722) is fixedly provided on the side of the adjustment block (72) away from the base (3).

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