Cable branch box with waterproof and moistureproof functions

Abstract

The cable branch box comprises a box body, a front door plate and a rear door plate are hinged to the front side wall and the rear side wall of the box body respectively, a top cover is installed on the top of the box body, and ventilation fans are symmetrically installed on the portion, located in the box body, of the inner wall of the top cover. A middle partition plate is transversely arranged in the box body and divides the space in the box body into a first cavity and a second cavity which are independent of each other, side ventilation openings are formed in the left side wall and the right side wall of the first cavity and the left side wall and the right side wall of the second cavity respectively, and sealing assemblies used for sealing the side ventilation openings are arranged in the left side wall and the right side wall of the first cavity and the left side wall and the right side wall of the second cavity respectively. The bottom wall of the first chamber and the bottom wall of the second chamber are respectively provided with wire passing plates, and cable fixing assemblies are connected in the wire passing holes in a matched mode. Opening and closing of the side ventilation openings can be adjusted, rainwater or humid air is prevented from entering the box body through the side ventilation openings, the stability and reliability of cable connection can be improved, the structural design is reasonable, and use is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of cable branch boxes, and in particular to a cable branch box with waterproof and moisture-proof functions. Background Art

[0002] The cable branch box is a device used for branch connection and power distribution control of power cable lines. Its main function is to facilitate the layout and maintenance of cable lines. At the same time, it can isolate, overload protect, and short-circuit protect power cables.

[0003] The existing cable branch box is provided with an inlet at the bottom for the trunk cable to enter the branch box, and a large number of air holes are also provided at the bottom for heat dissipation. However, when it rains, the air curtains provided at the air holes on the side of the branch box can prevent some rainwater from entering the branch box, but humid air can easily enter the branch box through the air holes and the inlet, which may cause the cable to become damp, the insulation performance to deteriorate, the short circuit and even cause fire and other serious consequences, posing a threat to the safe and stable operation of the power system and affecting the service life of electronic components. Summary of the invention

[0004] The purpose of the present invention is to provide a cable branch box with waterproof and moisture-proof functions to solve the above-mentioned problems existing in the prior art.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] The cable branch box with waterproof and moisture-proof function of the present invention comprises a box body, the front and rear side walls of the box body are respectively hinged with a front door plate and a rear door plate, and a top cover is installed on the top, and ventilation fans are symmetrically installed on the inner wall of the top cover and the part located in the box body, and a middle partition is transversely arranged in the box body, and the middle partition divides the space in the box body into two mutually independent first chambers and second chambers, and side vents are respectively opened on the left and right side walls of the first chamber and the second chamber, and the left and right side walls of the first chamber and the second chamber are respectively provided with ventilation holes for sealing the A closing component for the side vents, the closing component being arranged in one-to-one correspondence with the side vents, a wire-passing plate being respectively arranged on the bottom walls of the first chamber and the second chamber, a plurality of wire-passing holes being opened on the wire-passing plate, each of the wire-passing holes being connected with a cable fixing component for fixing the cable, a first humidity sensor being symmetrically arranged on the inner side walls of the first chamber and the second chamber and above the wire-passing plate, an upper vent being opened on the bottom wall of the top cover and located outside the box, and a second humidity sensor being symmetrically installed on the bottom of the top cover.

[0007] Furthermore, the closing assembly includes a driving motor, a threaded rod, a driving block, a guide rod, a left closing plate and a right closing plate, wherein a first fixed plate, a guide rod and a second fixed plate are fixedly connected between the middle partition plate and the front door plate or the rear door plate from top to bottom in sequence, the driving motor is installed on the first fixed plate, the output end of the driving motor passes through the first fixed plate and is connected to the threaded rod, the driving block is screwed on the threaded rod, the other end of the threaded rod is rotatably connected to the second fixed plate, a left linkage block and a right linkage block are symmetrically slidably connected on the guide rod, a left connecting rod is hingedly connected to the left linkage block and the driving block, and a right connecting rod is hingedly connected to the driving block, the left linkage block and the right linkage block are respectively fixedly connected to the left closing plate and the right closing plate on one side of the left linkage block and the right linkage block close to the side vent, and the side vent can be blocked when the left closing plate is aligned with the right closing plate.

[0008] Furthermore, sliding blocks are symmetrically arranged on the upper and lower sides of the left closing plate and the right closing plate close to the side vents, and sliding grooves are respectively arranged on the inner wall of the box body and above and below the side vents, and the sliding blocks are slidably connected with the sliding grooves.

[0009] Furthermore, a sealing gasket is correspondingly provided on a side of the left closing plate opposite to the right closing plate.

[0010] Furthermore, the cable fixing assembly includes a mounting plate, an upper clamping block, a lower clamping block and fixing bolts, the mounting plate is fixedly connected with a threaded connection end at the bottom and symmetrically fixed with a connecting plate at the top, the mounting plate and the threaded connection end are provided with through holes for passing the cable, the upper clamping block and the lower clamping block are respectively provided with an upper matching opening and a lower matching opening on the side opposite to the lower clamping block, the upper matching opening and the lower matching opening are enclosed in the circumference of the cable, and the two symmetrically arranged fixing bolts are matched and connected with the upper clamping block, the connecting plate and the lower clamping block in turn to achieve fixed connection of the cable.

[0011] Furthermore, an upper filling block is provided on a side of the upper mating opening close to the cable, and a lower filling block is provided on a side of the lower mating opening close to the cable. The upper filling block and the lower filling block are joined to cover the outside of the cable together.

[0012] Furthermore, a step structure is adopted at the joint between the upper filling block and the lower filling block to achieve interlocking.

[0013] Furthermore, a drying layer is provided above the wire-passing plate.

[0014] Furthermore, a controller is fixedly connected to the outer wall of the box body, and the controller is electrically connected to the ventilation fan, the first humidity sensor, the second humidity sensor and the sealing component respectively.

[0015] Compared with the prior art, the beneficial technical effects of the present invention are:

[0016] The cable branch box with waterproof and moisture-proof function of the present invention can not only adjust the opening and closing of the side vents to prevent rain or humid air from entering the box through the side vents, but also improve the stability and reliability of the cable connection. At the same time, the cable wire holes are sealed to prevent water accumulation at the bottom or water vapor from entering the first chamber and the second chamber through the wire holes, so that the first chamber and the second chamber separated in the overall box have better waterproof and moisture-proof effects. The humidity at different positions inside and outside the box can be monitored by the first humidity sensor and the second humidity sensor. The controller can obtain humidity information in real time. When the humidity exceeds or is lower than the preset threshold, the controller will automatically start or stop the ventilation fan to adjust the humidity environment inside the box to achieve intelligent control. At the same time, the controller can also control the opening and closing of the closing component and can automatically adjust the closing state of the box as needed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0019] Figure 2 It is a schematic diagram of the main structure of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0020] Figure 3 It is a right side structural schematic diagram of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0021] Figure 4 This is a schematic structural diagram of a cable branch box with waterproof and moisture-proof functions of the present invention after removing the top cover;

[0022] Figure 5 It is a schematic diagram of the top view of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0023] Figure 6It is a bottom view structural schematic diagram of a cable branch box with waterproof and moisture-proof functions of the present invention;

[0024] Figure 7 It is a schematic diagram of the internal structure of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0025] Figure 8 It is a left-side structural schematic diagram of a sealing assembly of a cable branch box with waterproof and moisture-proof functions of the present invention;

[0026] Fig. 9 It is a right side structural schematic diagram of the sealing assembly of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the cable fixing assembly of the cable branch box with waterproof and moisture-proof functions of the present invention;

[0028] Fig.11 It is a schematic cross-sectional structure diagram of a cable fixing assembly of a cable branch box with waterproof and moisture-proof functions of the present invention;

[0029] Fig.12 It is a structural schematic diagram of the connection between the cable fixing assembly and the cable of the cable branch box with waterproof and moisture-proof function of the present invention;

[0030] Fig.13 Another structural schematic diagram of the cable fixing assembly of the cable branch box with waterproof and moisture-proof functions of the present invention.

[0031] Description of reference numerals: 1, box body; 11, side vent; 12, middle partition; 13, wire hole; 14, first humidity sensor; 15, wire plate; 16, drying layer; 17, first chamber; 18, second chamber; 2, front door plate; 3, rear door plate; 4, top cover; 41, upper vent; 42, second humidity sensor; 5, ventilation fan; 6, closing assembly; 61, driving motor; 611, first fixing plate; 612, second fixing plate; 62, threaded rod; 63, driving block; 64. Guide rod; 65. Left linkage block; 66. Right linkage block; 67. Left connecting rod; 68. Right connecting rod; 7. Left closing plate; 71. Sealing gasket; 72. Sliding block; 8. Right closing plate; 9. Cable fixing assembly; 91. Mounting plate; 92. Threaded connection end; 93. Connecting plate; 94. Upper clamping block; 941. Upper filling block; 95. Upper matching port; 96. Lower clamping block; 961. Lower filling block; 97. Lower matching port; 98. Fixing bolt; 99. Through hole; 10. Cable. DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] In the description of the present invention, it should be understood that the terms "length", "width", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The technical solutions provided by various embodiments of the present invention are described in detail below in conjunction with the accompanying drawings.

[0036] Example 1

[0037] like Figures 1 to 11 As shown, the cable branch box with waterproof and moisture-proof function of this embodiment 1 includes a box body 1, and the front and rear side walls of the box body 1 are respectively hinged with a front door panel 2 and a rear door panel 3, and a top cover 4 is installed on the top. Figure 7 As shown, ventilation fans 5 are symmetrically installed on the inner wall of the top cover 4 and located inside the box body 1. The box body 1 is made of sturdy and durable material, and its surface is coated with a waterproof and moisture-proof nano-coating, such as a hydrophobic and oleophobic nano-coating, to improve the waterproof and moisture-proof effect. The front door panel 2 and the rear door panel 3 are connected to the box body 1 by a hinged manner, which is convenient for opening and closing while ensuring the sealing. The design of the top cover 4 can not only block rainwater, but also the ventilation fans 5 installed on its inner wall can promote air circulation inside and outside the box body 1 when needed. The ventilation fans 5 can be started when necessary to increase the air circulation in the box body 1, which helps to reduce humidity and temperature.

[0038] like Figure 4 As shown, a middle partition 12 is transversely arranged in the box body 1 and the middle partition 12 divides the space in the box body 1 into two independent first chambers 17 and second chambers 18. Specifically, the top of the middle partition 12 is fixedly connected to the bottom wall of the top cover 4, the two sides are respectively fixedly connected to the left and right side walls of the box body, and the bottom is fixedly connected to the bottom wall of the box body. A sealing strip is arranged at each connection. Side vents 11 are respectively opened on the left and right side walls of the first chamber 17 and the second chamber 18, and a closing component 6 for closing the side vents 11 is respectively arranged in the left and right side walls of the first chamber 17 and the second chamber 18. The closing component 6 is arranged one by one with the side vents 11. The design of the side vents 11 can be naturally ventilated at an appropriate time, and the closing component 6 can tightly close the side vents 11 when ventilation is not required or in bad weather to prevent moisture from intruding; the middle partition 12 divides the inside of the box body 1 into two independent chambers, which is conducive to the classification and management of different types of cables, and also reduces the electromagnetic interference and mutual influence between different cables. In addition, the separated chambers also allow waterproofing and moisture-proofing measures to be implemented more refined.

[0039] like Figure 7 As shown, a wire-passing plate 15 is provided on the bottom wall of the first chamber 17 and the second chamber 18, and a plurality of wire-passing holes 13 are provided on the wire-passing plate 15. A cable fixing assembly 9 for fixing the cable 10 is connected in cooperation with each wire-passing hole 13. A first humidity sensor 14 is symmetrically provided on the inner side wall of the first chamber 17 and the second chamber 18 and above the wire-passing plate 15. An upper vent 41 is provided on the bottom wall of the top cover 4 and outside the box body 1. A drying layer is provided inside the upper vent 41 to adsorb water vapor from the air entering and exiting through the upper vent 41. A second humidity sensor 42 is symmetrically installed at the bottom of the top cover 4. The wire-passing plate 15 and the wire-passing holes 13 thereon provide a passage for the cable 10 to enter the box body 1, and the cable fixing assembly 9 ensures that the cable 10 can be firmly fixed in the wire-passing hole 13 during the passage process, preventing the cable 10 from being damaged or affecting the waterproof effect due to shaking or external force. In addition, the first humidity sensor 14 is located on the inner wall of the first chamber 17 and the second chamber 18 and is higher than the wire plate 15. It can monitor the humidity changes in the chamber in real time. Once the humidity exceeds the preset safety range, the sensor will sound an alarm or trigger a corresponding dehumidification mechanism, such as starting the ventilation fan 5, to ensure that the cable 10 is always in a dry and safe environment. Preferably, multiple first humidity sensors 14 can be arranged at different heights on the inner walls of the first chamber 17 and the second chamber 18, so as to comprehensively monitor the humidity in the first chamber 17 and the second chamber 18.

[0040] At this time, the first chamber 17 is arranged corresponding to the front door panel 2, and the second chamber 18 is arranged corresponding to the rear door panel 3. Through the front door panel 2 and the rear door panel 3 respectively arranged on the front and rear side walls of the box body 1, the cable wiring equipment in the first chamber 17 and the second chamber 18 can be replaced, repaired or other operations can be performed respectively. The structural settings cooperate with each other to jointly achieve the sealing and waterproofing and moisture-proofing of the independent chambers. Specifically, sealing strips are also provided at the connections between the front door panel 2 and the rear door panel 3 and the box body 1.

[0041] Among them, Figure 8 , Fig. 9 As shown, the closing assembly 6 includes a driving motor 61, a threaded rod 62, a driving block 63, a guide rod 64, a left closing plate 7 and a right closing plate 8. A first fixing plate 611, a guide rod 64 and a second fixing plate 612 are fixedly connected from top to bottom between the middle partition plate 12 and the front door plate 2 or the rear door plate 3. The driving motor 61 is installed on the first fixing plate 611. The output end of the driving motor 61 passes through the first fixing plate 611 and is connected to the threaded rod 62. The driving block 63 is screwed on the threaded rod 62. The other end of 62 is rotatably connected to the second fixed plate 612, and the left linkage block 65 and the right linkage block 66 are symmetrically slidably connected on the guide rod 64. A left connecting rod 67 is hingedly connected between the left linkage block 65 and the driving block 63, and a right connecting rod 68 is hingedly connected between the right linkage block 66 and the driving block 63. The left and right linkage blocks 65 and 66 are respectively fixedly connected to the left closing plate 7 and the right closing plate 8 on the side close to the side vent 11. The left closing plate 7 and the right closing plate 8 can block the side vent 11 when they are matched.

[0042] When the cable branch box with waterproof and moisture-proof function of this embodiment is in use, by setting a closing component 6, when the driving motor 61 rotates, it can drive the threaded rod 62 to rotate, and at this time the driving block 63 moves up and down on the threaded rod 62. With the up and down movement of the driving block 63, the left connecting rod 67 and the right connecting rod 68 can respectively drive the left linkage block 65 and the right linkage block 66 to move left and right on the guide rod 64, and the movement directions of the left linkage block 65 and the right linkage block 66 are opposite. At this time, the left linkage block 65 and the right linkage block 66 can drive the left closing plate 7 and the right closing plate 8 to move in the opposite direction or towards each other, thereby realizing the opening or blocking of the side vent 11, and the opening state of the side vent 11 can be adjusted at any time according to specific usage needs.

[0043] In order to improve the stability of the left closing plate 7 and the right closing plate 8 during the opening and closing process, Fig. 9As shown, sliding blocks 72 are symmetrically arranged on the side of the left closing plate 7 and the right closing plate 8 near the side vent 11, and correspondingly, sliding grooves are arranged on the inner wall of the box body 1 above and below the side vent 11, and the sliding blocks 72 are slidably connected with the sliding grooves. At this time, the arrangement of the sliding blocks 72 and the sliding grooves can effectively guide the left closing plate 7 and the right closing plate 8. In addition, a sealing gasket 71 is correspondingly arranged on the side opposite to the left closing plate 7 and the right closing plate 8, which can further improve the blocking effect of the closing component 6 on the side vent 11 and prevent rainwater or humid air from entering the box body 1 through the side vent 11.

[0044] like Fig.10 , Fig.11 As shown, the cable fixing assembly 9 includes a mounting plate 91, an upper clamping block 94, a lower clamping block 96 and a fixing bolt 98. A threaded connection end 92 is fixedly connected to the bottom of the mounting plate 91, and a connecting plate 93 is symmetrically fixedly connected to the top. A through hole 99 for passing the cable 10 is provided inside the mounting plate 91 and the threaded connection end 92. An upper mating opening 95 and a lower mating opening 97 are respectively provided on the side opposite to the lower clamping block 96. The upper mating opening 95 and the lower mating opening 97 are enclosed in the circumference of the cable 10. Two symmetrically arranged fixing bolts 98 are matched and connected with the upper clamping block 94, the connecting plate 93 and the lower clamping block 96 in turn to achieve a fixed connection of the cable 10. Among them, the upper clamping block 94 and the lower clamping block 96 are tightly matched with the fixing bolts 98 to firmly clamp the cable 10 in the middle, which can ensure that the cable 10 is not easy to loosen or fall off when subjected to external force, thereby improving the stability and reliability of the connection of the cable 10. By setting a threaded connection end 92 at the bottom of the mounting plate 91, it is convenient to make a firm connection with the wire hole 13, thereby further enhancing the stability of the entire cable fixing assembly 9.

[0045] In order to better achieve moisture-proofing in the box 1, a drying layer 16 is provided above the wire-passing plate 15. The drying layer 16 can effectively absorb the humid air in the box 1 and reduce the humidity level in the box 1, thereby preventing electrical components from short circuiting, leaking, and other faults due to moisture, thereby improving the reliability and safety of electrical equipment. Preferably, the drying layer 16 is made of silica gel desiccant, activated carbon, or molecular sieve.

[0046] In this embodiment, a controller is fixedly connected to the outer wall of the box 1, and the controller is electrically connected to the ventilation fan 5, the first humidity sensor 14, the second humidity sensor 42 and the sealing component 6. The humidity at different positions inside and outside the box 1 can be monitored by the first humidity sensor 14 and the second humidity sensor 42, and the controller can obtain humidity information in real time. When the humidity exceeds or falls below a preset threshold, the controller will automatically start or stop the ventilation fan 5 to adjust the humidity environment inside the box 1 to achieve intelligent control; at the same time, the controller can also control the opening and closing of the sealing component 6, and can automatically adjust the sealing state of the box 1 as needed.

[0047] Example 2

[0048] like Fig.12 , Fig.13 As shown, the difference between this embodiment 2 and embodiment 1 is that an upper filling block 941 is provided on the side of the upper mating opening 95 close to the cable 10, and a lower filling block is provided on the side of the lower mating opening 97 close to the cable 10. After the upper filling block 941 is joined with the lower filling block, they are jointly wrapped on the outside of the cable 10.

[0049] In this embodiment, the upper filling block 941 and the lower filling block are provided to provide a stable support and fixing point for the cable 10. When the cable 10 passes through the wire hole 13, the two filling blocks can be tightly wrapped around the outside of the cable 10 to prevent the cable 10 from shaking or falling off in the box 1, thereby ensuring the stability and safety of the cable 10. Moreover, after the upper filling block 941 and the lower filling block are joined, a relatively sealed space can be formed to isolate the humid environment outside the box 1 from the box 1. This sealing design helps to prevent moisture and water from entering the box 1 through the gap between the cable 10 and the box 1, thereby protecting the cable 10 and other electrical components in the box 1. In addition, during long-term use, the cable 10 may be worn due to friction with the box 1 or other components. The upper filling block 941 and the lower filling block serve as a buffer layer between the cable 10 and the box 1, which can reduce such friction and extend the service life of the cable 10. Specifically, the filling block is usually made of a material with moisture-proof properties, such as rubber or silicone, so that it not only has good sealing properties, but also can absorb and block moisture, further enhancing the waterproof and moisture-proof function of the cable 10 branch box.

[0050] Preferably, a stepped structure is used to achieve interlocking at the joint between the upper filling block 941 and the lower filling block. The stepped structure enables the upper filling block 941 and the lower filling block to form a multi-level interlocking when they are joined. This interlocking method has higher stability and fixity than simple planar contact, and can form a tighter contact surface, reducing gaps and voids at the joint. This close contact helps prevent moisture and water from penetrating into the interior of the cable branch box through the joint, thereby improving the waterproof and moisture-proof performance of the box body 1.

[0051] The embodiments described above are only descriptions of the preferred modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A cable branch box with waterproof and moisture-proof function, characterized in that: The box body comprises a box body, wherein the front and rear side walls of the box body are respectively hinged with a front door panel and a rear door panel and a top cover is installed on the top, a ventilation fan is symmetrically installed on the inner wall of the top cover and the part located in the box body, a middle partition is horizontally arranged in the box body, and the middle partition divides the space in the box body into two independent first chambers and a second chamber, side vents are respectively opened on the left and right side walls of the first chamber and the second chamber, and closing components for closing the side vents are respectively arranged in the left and right side walls of the first chamber and the second chamber, and the closing components are arranged in a one-to-one correspondence with the side vents, a wire passing plate is respectively arranged on the bottom wall of the first chamber and the second chamber, a plurality of wire passing holes are opened on the wire passing plate, and a cable fixing component for fixing a cable is connected in each of the wire passing holes, a first humidity sensor is symmetrically arranged on the inner side walls of the first chamber and the second chamber and located above the wire passing plate, and a second humidity sensor is symmetrically installed on the bottom of the top cover.

2. The cable branch box with waterproof and moisture-proof function according to claim 1 is characterized in that: The sealing assembly comprises a driving motor, a threaded rod, a driving block, a guide rod, a left sealing plate and a right sealing plate, wherein the middle partition plate and the front door plate or the rear door plate are fixedly connected with a first fixing plate, a guide rod and a second fixing plate in sequence from top to bottom, and the driving motor is installed on the first fixing plate, and the output end of the driving motor passes through the first fixing plate and is connected to the threaded rod, the threaded rod is screwed on the driving block, and the other end of the threaded rod is rotatably connected to the second fixing plate. The left linkage block and the right linkage block are symmetrically slidably connected on the guide rod, and the left linkage block is hingedly connected to the driving block with a left connecting rod, and the right connecting rod is hingedly connected to the driving block with a right connecting rod, and the left and right linkage blocks are respectively fixedly connected with the left sealing plate and the right sealing plate on the sides close to the side vent, and the side vent can be blocked when the left sealing plate is matched with the right sealing plate.

3. The cable branch box with waterproof and moisture-proof function according to claim 2 is characterized in that: Sliding blocks are symmetrically arranged on the upper and lower sides of the left closing plate and the right closing plate near the side vents, and sliding grooves are respectively arranged on the inner wall of the box body above and below the side vents, and the sliding blocks are slidably connected with the sliding grooves.

4. The cable branch box with waterproof and moisture-proof function according to claim 2 is characterized in that: A sealing gasket is correspondingly arranged on one side of the left closing plate opposite to the right closing plate.

5. The cable branch box with waterproof and moisture-proof function according to claim 1 is characterized in that: The cable fixing assembly includes a mounting plate, an upper clamping block, a lower clamping block and fixing bolts. A threaded connection end is fixedly connected to the bottom of the mounting plate, and a connecting plate is symmetrically fixedly connected to the top. Through holes for passing the cable are provided inside the mounting plate and the threaded connection end. An upper mating opening and a lower mating opening are respectively provided on the side opposite to the lower clamping block of the upper clamping block. The upper mating opening and the lower mating opening are enclosed in the circumference of the cable. The two symmetrically arranged fixing bolts are matched and connected with the upper clamping block, the connecting plate and the lower clamping block in turn to achieve fixed connection of the cable.

6. The cable branch box with waterproof and moisture-proof function according to claim 5, characterized in that: An upper filling block is arranged on a side of the upper mating opening close to the cable, and a lower filling block is arranged on a side of the lower mating opening close to the cable. The upper filling block and the lower filling block are joined to cover the outside of the cable together.

7. The cable branch box with waterproof and moisture-proof function according to claim 6, characterized in that: The joint between the upper filling block and the lower filling block adopts a stepped structure to achieve interlocking.

8. The cable branch box with waterproof and moisture-proof function according to claim 1, characterized in that: A drying layer is arranged above the wire-passing plate.

9. The cable branch box with waterproof and moisture-proof function according to any one of claims 1 to 8, characterized in that: A controller is fixedly connected to the outer wall of the box body, and the controller is electrically connected to the ventilation fan, the first humidity sensor, the second humidity sensor and the sealing component respectively.

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