CN113258515B

CN113258515B - Energy-concerving and environment-protective type cable branch case

Info

Publication number: CN113258515B
Application number: CN202110617538.7A
Authority: CN
Inventors: 林金延; 吴彭福
Original assignee: Sichuan Shudian Whole Set Equipment Co ltd
Current assignee: Sichuan Shudian Whole Set Equipment Co ltd
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2021-09-17
Anticipated expiration: 2041-06-03
Also published as: CN113258515A

Abstract

The invention discloses an energy-saving environment-friendly cable branch box, which belongs to the design of cable branch boxes and comprises a fixed side wall and an extended side wall, wherein a connecting fastener is arranged on the fixed side wall, the connecting fastener comprises a connecting gap arranged on the fixed side wall, the upper part of the connecting gap is provided with a first connecting hook, the lower part of the connecting gap is provided with a second connecting hook, a connecting device is connected through four pin shafts, and a telescopic rod is connected with the top of a groove of the extended side wall through a fixed seat; a handle and a handle seat are also arranged; when the handle is connected with the handle seat, the handle seat is in an original position, and the clamping shaft is rotated to present a clamping station; when the handle is separated from the handle seat and the rotating position forms an included angle a with the original position, the rotating clamping shaft presents a passing station, and a is more than or equal to 45 degrees and less than or equal to 180 degrees; the assembled cable branch box can be assembled in an assembled manner, is very convenient to transport, saves resources, avoids resource waste, and has a high-efficiency waterproof effect in normal rainwater weather.

Description

Energy-concerving and environment-protective type cable branch case

Technical Field

The invention belongs to the field of cable branch box design, and particularly relates to an energy-saving and environment-friendly cable branch box.

Background

The power distribution network is increasingly supplied with power by cables, and sometimes the situation that independent load distribution with low capacity is relatively concentrated occurs, at this time, a cable branch box is usually used for connecting cables in a multi-branch mode, because the cable branch box cannot directly operate each path, and only plays a role in cable branching. The cable branch box has the main functions of switching cables and tapping cables; wherein, the cable shunting effect: when the distance of a distribution line is long, if a plurality of small-area cables are selected for power transmission, a lot of cables are wasted, so that in the process of outgoing a line to a power load, a main large cable is usually selected for outgoing the line in the process of outgoing the line, then a cable branch box is used for branching the main cable when the load is close to the load, the main cable is divided into a plurality of small-area cables, and the small-area cables are connected to the load. The wiring mode is widely used for power supply of street lamps and the like and power supply of small users in an urban power grid; the cable switching function: when the distribution electric distance is longer, the requirement of long distance cannot be met due to the fact that the length of the cable is limited, and then the cable connector or the cable junction box is used for connection. Normally, when the distribution electric distance is not more than 3000m, a cable intermediate joint is adopted; however, if a plurality of intermediate connectors are used for connection on a cable line with a distance of more than 3000m, the potential safety hazard is increased, so that a cable branch box is generally adopted for switching in order to ensure the power supply safety.

The cable branch box is used for realizing convenient butt joint of cables with different sections, abandons the complex process of a cable intermediate joint, improves the cable connection environment, is favorable for ensuring the butt joint quality, and is convenient for the conventional inspection and maintenance of subsequent operation.

However, the existing vertical cable branch box has the following problems: most of the cable branch boxes are integrally transported to an installation place, so that the transportation is very inconvenient, and the recycling rate of materials is very low; the size of the cable branch box cannot be adjusted according to actual power connection, the branch space cannot be increased or reduced, local adjustment cannot be performed once installation is completed, and only integral disassembly and replacement can be performed, so that resources are wasted, the cable branch box is not environment-friendly, and waste of resources is easily caused; the ventilation holes which are usually arranged are generally arranged on the side wall, but the side wall is designed to be thinner in consideration of heat dissipation requirements, the waterproof performance of the ventilation holes is extremely poor, rainwater easily enters the interior of the cable branch box, short circuit or damage to equipment or lines is caused, and further serious safety accidents such as electric leakage and fire disasters are caused.

Disclosure of Invention

In view of the problems in the background art, the present invention is directed to: the utility model provides an energy-concerving and environment-protective type cable branch case for solve the problem that the material rate of recovery of current cable branch case is not enough, can't adjust inside size and rain-proof water gets into cable branch case easily.

The purpose of the invention is realized by the following technical scheme: an energy-saving and environment-friendly cable branch box comprises a fixed side wall and an extension side wall, wherein a groove is formed at the joint of the extension side wall and the fixed side wall, a connecting fastener is arranged in the groove and comprises a connecting notch arranged on the fixed side wall, the upper part of the connecting notch is provided with a first connecting hook, the lower part of the connecting notch is provided with a second connecting hook, and the middle part of the connecting notch is an arc-shaped end surface; the connecting fastener further comprises a connecting device arranged on the extending side wall, the connecting device comprises a pair of connecting plates with four through holes, the two connecting plates are connected through a first pin shaft, a second pin shaft, a third pin shaft and a fourth pin shaft in sequence, the second pin shaft is fixedly connected with one end of a telescopic rod, and the other end of the telescopic rod is fixedly connected with the top of the groove of the extending side wall through a fixed seat; a rotary clamping shaft is arranged in the middle of a fourth pin shaft between the two connecting plates, a handle coaxial with the fourth pin shaft is arranged on one side of the fourth pin shaft, which is far away from the extending side wall, one end of the handle, which is far away from the fourth pin shaft, is movably clamped with a handle seat, and the handle seat is fixedly connected with the connecting plates; a shaft body in the middle of a first pin shaft between the two connecting plates is matched with the first connecting hook, and the rotary clamping shaft is matched with the second connecting hook; when the handle is connected with the handle seat, the handle seat is in an original position, and the clamping shaft is rotated to present a clamping station; when the handle is separated from the handle seat and the rotating position forms an included angle a with the original position, the rotating clamping shaft presents a passing station, the passing station is that the rotating clamping shaft and the second connecting hook are released from the clamping state, and a is more than or equal to 45 degrees and less than or equal to 180 degrees.

Furthermore, rotatory joint axle includes that the terminal surface is the rectangle cylinder of square and with the arc lug at rectangle cylinder side fixed connection.

Furthermore, rotatory joint axle includes that the terminal surface is the rectangle cylinder of square and fixed connection is at the relative both sides face fixed connection's of rectangle cylinder arc lug.

Furthermore, the shaft body in the middle of the first pin shaft between the two connecting plates is a shaft body with the upper part being a polygonal prism and the lower part being a semi-cylinder, and the bottom side of the polygonal prism is equal to the diameter of the semi-cylinder of the lower part.

Preferably, the upper part of the middle shaft body of the first pin shaft between the two connecting plates is a pentagonal prism.

The sealing side wall is connected with the fixed side wall or the extending side wall clamping groove; the sealing side wall and/or the fixing side wall are/is further provided with a vent hole, the vent hole is a cylindrical hole, and one end of the vent hole, which is positioned on the outer side of the sealing side wall and/or the fixing side wall, is lower than one end of the vent hole, which is positioned on the inner side of the sealing side wall and/or the fixing side wall.

Further, the ventilation hole is less than the inboard one end fixedly connected with ventilation waterproof part at sealed limit wall and/or fixed limit wall, ventilation waterproof part internal diameter is the same with the ventilation hole, ventilation waterproof part inside is provided with two-layer water-stop sheet, water-stop sheet and ventilation waterproof part inner wall fixed connection, the distance between the nearest point of two-layer water-stop sheet is more than or equal to 0.5cm, two-layer water-stop sheet and ventilation waterproof part inner wall mutually perpendicular.

Furthermore, the bottom of the outer layer water-stop sheet is provided with a drain hole.

Preferably, the inner diameter of the drain hole is half of the water stop plate.

Further, still include the roof structure, the top of roof structure is the side slope, and the lowest limit of side slope and the water catch bowl fixed connection of equidirectional, the one end of water catch bowl bottom is higher than the other end.

In summary, due to the adoption of the technical scheme, the invention has the following positive technical effects:

1. the assembled cable branch box can be assembled in an assembled manner, all parts of the cable branch box can be disassembled, the transportation is very convenient, the transportation in large batch can be completed by using common engineering vehicles, the transportation operation cost is greatly reduced, and the installation work efficiency of the cable branch box is improved; the connecting fastener designed by the invention is convenient to operate, can accelerate the process of mounting or dismounting, and saves time and cost.

2. The invention can expand or reduce the branch space of the cable branch box in the operation process, improves the utilization rate of the internal space of the cable branch box under the condition of ensuring that the requirement of line branching is met, and can continuously use the detached accessories in other cable branch boxes, thereby not only saving resources and avoiding the waste of resources, but also improving the environmental protection characteristic of the cable branch box.

3. The invention can realize high-efficiency waterproof effect in normal rainwater weather and has better waterproof effect in strong wind and rain weather, and the invention has stronger waterproof protection effect on wires and cables in the cable branch box and can prevent most rainwater from entering the cable branch box.

4. By adopting the design of the box top structure and the rain collecting groove, the invention can reduce the sliding of rainwater from the box top along the box wall, reduce the possibility of the contact of the box wall and the rainwater, reduce the possibility of the rainwater flowing into the box body along the gap of the box wall, and further enhance the safety for reducing the possibility of wires and cables in the box body being eroded by the rainwater.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:

FIG. 1 is a schematic view of an assembled configuration of a single cable breakout enclosure of the present invention;

FIG. 2 is a schematic view of an assembled structure of a plurality of cable breakout boxes according to the present invention;

FIG. 3 is a schematic view of the left side of the fastener of the present invention;

FIG. 4 is a front view of the connecting clip of the present invention;

FIG. 5 is a perspective view of the fastener of the present invention from the right side;

FIG. 6 is a perspective view of the fastener of the present invention with the top first connecting rod being a lower cylinder of the upper prism;

FIG. 7 is a schematic perspective view of a second connecting rod of the present invention with a snap rail attached;

FIG. 8 is a schematic perspective view of the side wall of the present invention with vents;

FIG. 9 is a schematic perspective view of the vent holes directly provided when the side walls are thick;

FIG. 10 is a perspective view of the side wall when thinned with the addition of a ventilation and waterproofing feature;

fig. 11 is a sectional view of the ventilation and waterproof member with a water-stop sheet provided inside;

fig. 12 is a schematic perspective view of the ventilation and waterproof member with a water-stop sheet provided inside;

fig. 13 is a schematic perspective view of a waterproof vent plate with a drain hole;

FIG. 14 is a schematic perspective view of the sealing edge wall of the present invention;

FIG. 15 is a schematic perspective view of the roof structure and water collection trough of the present invention;

the labels in the figure are: 1-a box top structure; 2-sealing the side wall; 3-side wall with box door; 4-connecting fasteners; 5-extending the side wall; 6-a connecting device; 11-a water collecting tank; 12-fixing the side wall; 21-clamping a bump; 31-a handle; 32-a key hole; 41-a fixed seat; 42-a telescopic rod; 43-a second pin; 44-a third pin; 45-handle seat; 46-a handle; 47-a fourth pin; 48-rotating the clamping shaft; 49-first pin; 121-connection gap; 122-a vent; 123-a ventilation waterproof component; 1211 — first coupling hook; 1212-a second coupling hook; 1231-a water-stop sheet; 1232-Drain hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

The features and properties of the present invention are described in further detail below with reference to examples.

Example one

As shown in fig. 1 to 5, an energy-saving and environment-friendly cable branch box according to a preferred embodiment of the present invention includes a fixed side wall 12 and an extended side wall 5, a groove is formed at a joint of the extended side wall 5 and the fixed side wall 12, a connection fastener 4 is disposed in the groove, the connection fastener 4 includes a connection notch 121 disposed on the fixed side wall 12, an upper portion of the connection notch 121 is a first connection hook 1211, a lower portion of the connection notch 121 is a second connection hook 1212, and a middle portion of the connection notch 121 is an arc-shaped end surface; the connecting fastener 4 further comprises a connecting device 6 arranged on the extension side wall 5, the connecting device 6 comprises a pair of connecting plates with four through holes, the two connecting plates are connected through a first pin shaft 49, a second pin shaft 43, a third pin shaft 44 and a fourth pin shaft 47 in sequence, the second pin shaft 43 is fixedly connected with one end of an expansion link 42, and the other end of the expansion link 42 is fixedly connected with the top of the groove of the extension side wall 5 through a fixed seat 41; a rotary clamping shaft 48 is arranged in the middle of a fourth pin shaft 47 between the two connecting plates, a handle 46 coaxial with the fourth pin shaft 47 is arranged on one side, away from the extension side wall 5, of the fourth pin shaft 47, one end, away from the fourth pin shaft 47, of the handle 46 is movably clamped with a handle seat 45, and the handle seat 45 is fixedly connected with the connecting plates; the middle shaft body of the first pin shaft 49 between the two connecting plates is matched with the first connecting hook 1211, and the rotating clamping shaft 48 is matched with the second connecting hook 1212; when the handle 46 is connected with the handle seat 45, the handle is in the original position, and the clamping shaft 48 is rotated to present a clamping station; when the handle 46 is separated from the handle seat 45 and the rotating position forms an included angle a with the original position, the rotating clamping shaft 48 presents a passing station, the passing station is that the rotating clamping shaft and the second connecting hook are released from the clamping state, and a is more than or equal to 45 degrees and less than or equal to 180 degrees.

The rotary clamping shaft 48 used in this embodiment includes a rectangular column with a square end surface and an arc-shaped projection fixedly connected to a side surface of the rectangular column.

The connection work flow of the fixed side wall 12 and the extension side wall 5 of the invention is as follows:

specifically, 6 steps are included;

step 1, rotating a handle 46 to present a rotary clamping shaft 48 to a passing station;

step 2, the connecting device 6 is integrally pulled downwards, so that the telescopic rod 42 is in an extended state,

step 3, when the whole connecting device 6 is pulled downwards, the first connecting hook 1211 of the connecting notch 121 is hung on the first pin shaft 49, the opening direction of the first connecting hook 1211 faces downwards, and the first pin shaft 49 is hung; the downward pulling force is removed so that the first coupling hook 1211 engages with the first pin shaft 49;

step 4, moving the second connecting hook 1212 of the connecting notch 121 to the rotary clamping shaft 48, wherein the rotary clamping shaft 48 presents a passing station for the second connecting hook 1212 to hold;

step 5, when the second connecting hook 1212 clasps the rotary clamping shaft 48, the handle 46 is rotated, so that the rotary clamping shaft 48 presents a clamping station, and at the moment, the second connecting hook 1212 cannot move from the rotary clamping shaft 48;

step 6, connecting the handle 46 with the handle seat 45.

Otherwise, the disassembly process is performed, and will not be described herein.

The connection of the spliced box bodies can be completed through the steps, and then the box top structure 1 and the side wall 3 with the box door can be connected through bolts or other detachable connection modes according to the conventional operation means about the assembled box bodies in the field of mechanical assembly, which are common operation means in the field and can be well mastered by technicians and designers in the field, and are not described again; wherein, the side wall 3 with the box door is provided with a handle 31 and a key hole 32, the handle 31 is convenient for the working personnel to hold, thereby conveniently realizing the opening and closing of the box door, and the key hole is used for locking the box door.

It should be noted that, in the field, the sealing side wall 2 is connected to the fixing side wall 12 or the extending side wall 5 through the clamping grooves, specifically, clamping protrusions 21 are disposed at two ends of the sealing side wall 2, and the clamping protrusions 21 are matched with the corresponding clamping grooves, so as to connect the sealing side wall 2 to the fixing side wall 12 or the extending side wall 5; the clamping piece and the convex block are frequently used for the waterproof and fitting effects of the splicing side wall, the waterproof sealing strip is arranged on the connecting surface of the clamping piece and the convex block for waterproof design, and the detachable silica gel sealing strip is most commonly adopted.

Example two

As shown in fig. 6, in this embodiment, on the basis of the first embodiment, the middle shaft body of the first pin 49 between the two connecting plates is set to be a shaft body whose upper part is a polygonal prism and lower part is a semi-cylinder, and the bottom side of the polygonal prism is equal to the diameter of the semi-cylinder of the lower part. The arrangement is to reduce the sliding tendency between the first connecting hook 1211 and the middle shaft body of the first pin shaft 49 between the two connecting plates, to enhance the clamping effect, and to facilitate clamping positioning of workers during specific implementation, so as to avoid damage to the connecting fastener 4 by misoperation, thereby affecting the fastening effect.

EXAMPLE III

As shown in fig. 7, in this embodiment, on the basis of the first embodiment, the rotary clamping shaft 48 is configured to include a rectangular column with a square end surface and arc-shaped protrusions fixedly connected to two opposite side surfaces of the rectangular column. The purpose of this is to further define the fastening space between the rotating clamping shaft 48 and the second coupling hook 1212, and to enhance the fastening strength without changing the fastening manner, so that the cable branch box of the present invention has a stronger integrity.

Example four

As shown in fig. 8 and 9, in the present embodiment, on the basis of the first embodiment, since the existing cable branch box basically needs to dissipate heat, because in the existing cable branch box, internal appliances such as electric appliances, electric wires and cables work in a closed environment, the generated heat gradually accumulates and needs to be dissipated in time, otherwise, the temperature in the cable branch box gradually rises, and in a high-temperature environment, the use of the internal appliances is affected, and the service life of the internal appliances is reduced. Therefore, it is necessary to provide the ventilation hole 122 on the sealing side wall 2 and/or the fixing side wall 12, the ventilation hole 122 is a cylindrical hole, and one end of the ventilation hole 122 on the outer side of the sealing side wall 2 and/or the fixing side wall 12 is lower than one end on the inner side of the sealing side wall 2 and/or the fixing side wall 12.

Set up ventilation hole 122 into the form of outer low interior height, can effectively avoid the entering of outside rainwater, under the prerequisite of guaranteeing to ventilate, strengthen cable branch box's water-proof effects.

EXAMPLE five

As shown in fig. 10 to 12, in the present embodiment, on the basis of the fourth embodiment, since the box body of the existing cable branch box is generally thin, and is not enough to support the vent hole 122 with a low outside and a high inside in the fourth embodiment, the purpose of enhancing the waterproof effect of the cable branch box under the precondition of ensuring ventilation can be achieved by additionally installing the ventilation waterproof component 123 inside.

Specifically, the ventilation hole 122 is lower than the ventilation waterproof part 123 fixedly connected to one end of the inner side of the sealing side wall 2 and/or the fixing side wall 12, the inner diameter of the ventilation waterproof part 123 is the same as that of the ventilation hole 122, two layers of water baffles 1231 are arranged inside the ventilation waterproof part 123, the water baffles 1231 are fixedly connected to the inner wall of the ventilation waterproof part 123, the distance between the closest points of the two layers of water baffles 1231 is greater than or equal to 0.5cm, and the two layers of water baffles 1231 are perpendicular to the inner wall of the ventilation waterproof part 123.

EXAMPLE six

As shown in fig. 13, in this embodiment, on the basis of the fifth embodiment, although the waterproof effect is enhanced by the two water-stop sheets, in the case of approaching sea, a lake or strong wind, rainwater may still enter the interior of the box body of the cable branch box through the vent hole 122, so that the present invention proposes to provide a drain hole 1232 at the bottom of the water-stop sheet 1231 on the outer layer, where the inner diameter of the drain hole is half of the inner diameter of the water-stop sheet 1231. Under the function of guaranteeing to block the rainwater, increase as far as and discharge the ponding of siltation between the water proof sheet, reduce the possibility that the siltation rainwater gets into inside the cable branch box.

EXAMPLE seven

As shown in fig. 14 to 15, in this embodiment, on the basis of the first embodiment, to describe the box top structure 1 of the cable branch box of the present invention, the top of the box top structure 1 is a side slope, the lowest edge of the side slope is fixedly connected to the water collecting tank 11 in the same direction, and one end of the bottom of the water collecting tank 11 is higher than the other end.

Under the conditions of ordinary rainfall, manual sprinkling, spraying by a spraying vehicle or artificial high-altitude throwing sprinkling and the like, the top of the box top structure 1 designed by the invention is a side inclined plane, water on the box top can be guided to enter the water collecting tank 11, and because one end of the water collecting tank 11 is higher than the other end, directional drainage can be realized, so that the box top structure is very environment-friendly no matter the water is drained to an urban pipe network or vegetation is watered on site, and the box top structure has a good improvement effect on the surrounding environment.

In the foregoing, various embodiments of the present invention have been described with reference to specific examples. However, it should be understood that: the description of the various embodiments of the present invention is not intended to be limiting. The above description is intended to be exemplary of the invention and not to limit the scope of the invention, which is defined by the claims.

Claims

1. An energy-saving environment-friendly cable branch box comprises a fixed side wall (12) and an extension side wall (5), and is characterized in that,

a groove is formed in the joint of the extension side wall (5) and the fixed side wall (12), a connecting fastener (4) is arranged in the groove, the connecting fastener (4) comprises a connecting notch (121) formed in the fixed side wall (12), a first connecting hook (1211) is arranged at the upper part of the connecting notch (121), a second connecting hook (1212) is arranged at the lower part of the connecting notch (121), and the middle part of the connecting notch (121) is an arc-shaped end face;

the connecting fastener (4) further comprises a connecting device (6) arranged on the extension side wall (5), the connecting device (6) comprises a pair of connecting plates with four through holes, the two connecting plates are connected through a first pin shaft (49), a second pin shaft (43), a third pin shaft (44) and a fourth pin shaft (47) in sequence, the second pin shaft (43) is fixedly connected with one end of the telescopic rod (42), and the other end of the telescopic rod (42) is fixedly connected with the top of the groove of the extension side wall (5) through a fixing seat (41);

a rotary clamping shaft (48) is arranged in the middle of a fourth pin shaft (47) between the two connecting plates, a handle (46) coaxial with the fourth pin shaft (47) is arranged on one side, far away from the extension side wall (5), of the fourth pin shaft (47), one end, far away from the fourth pin shaft (47), of the handle (46) is movably clamped with a handle seat (45), and the handle seat (45) is fixedly connected with the connecting plates;

the middle shaft body of a first pin shaft (49) between the two connecting plates is matched with a first connecting hook (1211), and the rotary clamping shaft (48) is matched with a second connecting hook (1212);

when the handle (46) is connected with the handle seat (45), the handle is in an original position, and the clamping shaft (48) is rotated to present a clamping station; when the handle (46) is separated from the handle seat (45) and the rotating position forms an included angle a with the original position, the rotating clamping shaft (48) presents a passing station, the passing station is a state that the rotating clamping shaft (48) and the second connecting hook (1212) are released from clamping, and a is more than or equal to 45 degrees and less than or equal to 180 degrees.

2. The energy-saving and environment-friendly cable branch box according to claim 1, wherein the rotary clamping shaft (48) comprises a rectangular cylinder with a square end face and an arc-shaped projection fixedly connected with the side face of the rectangular cylinder.

3. The energy-saving and environment-friendly cable branch box according to claim 1, wherein the rotary clamping shaft (48) comprises a rectangular cylinder with a square end face and arc-shaped protrusions fixedly connected to two opposite side faces of the rectangular cylinder.

4. An energy-saving and environment-friendly cable branch box according to any one of claims 1-3, characterized in that the middle shaft body of the first pin (49) between the two connecting plates is a shaft body with an upper part being a polygonal prism and a lower part being a semi-cylinder, and the bottom side of the polygonal prism is equal to the diameter of the semi-cylinder of the lower part.

5. The energy-saving and environment-friendly cable branch box according to claim 4, characterized in that the upper part of the middle shaft body of the first pin shaft (49) between the two connecting plates is a pentagonal prism.

6. The energy-saving and environment-friendly cable branch box according to claim 1, further comprising a sealing side wall (2), wherein the sealing side wall (2) is connected with the fixing side wall (12) or the extending side wall (5) by a clamping groove; the sealing side wall (2) and/or the fixing side wall (12) are/is further provided with a vent hole (122), the vent hole (122) is a cylindrical hole, and one end, outside the sealing side wall (2) and/or the fixing side wall (12), of the vent hole (122) is lower than one end, inside the sealing side wall (2) and/or the fixing side wall (12).

7. The energy-saving and environment-friendly cable branch box according to claim 6, wherein the ventilation hole (122) is lower than the ventilation waterproof part (123) fixedly connected to one end of the inner side of the sealing side wall (2) and/or the fixing side wall (12), the inner diameter of the ventilation waterproof part (123) is the same as that of the ventilation hole (122), two layers of water baffles (1231) are arranged inside the ventilation waterproof part (123), the water baffles (1231) are fixedly connected with the inner wall of the ventilation waterproof part (123), the distance between the nearest points of the two layers of water baffles (1231) is greater than or equal to 0.1235 cm, and the inner walls of the two layers of water baffles (1231) and the ventilation waterproof part (123) are perpendicular to each other.

8. The energy-saving and environment-friendly cable branch box according to claim 7, wherein a drain hole (1232) is formed at the bottom of the water-stop sheet (1231) of the outer layer.

9. The energy-saving and environment-friendly cable branch box according to claim 8, wherein the inner diameter of the drain hole is half of the water stop sheet (1231).

10. The energy-saving and environment-friendly cable branch box according to claim 1, further comprising a box top structure (1), wherein the top of the box top structure (1) is a side slope, the lowest edge of the side slope is fixedly connected with a water collecting tank (11) in the same direction, and one end of the bottom of the water collecting tank (11) is higher than the other end.