CN116031826A - Rainproof type cable branch box - Google Patents

Abstract

The invention discloses a rainproof type cable branch box, which relates to the technical field of electrical configuration and comprises an outer box shell, a built-in mounting table, a hole shielding assembly and a monitoring assembly, wherein the built-in mounting table is driven by a lifting mechanism to lift in rainy days, so that the hole shielding assembly is triggered to shield and block a heat dissipation hole of a heat dissipation area, and rainwater is prevented from entering the box due to the fact that the heat dissipation hole is opened; when the rain is not raining, the lifting mechanism drives the built-in mounting table to lower and reset, the hole shielding assembly opens the heat dissipation holes of the heat dissipation area completely, and the heat dissipation holes restore the heat dissipation function. According to the invention, the lifting mechanism is adopted to drive the built-in mounting table to lift, and the ingenious structural arrangement of the hole shielding assembly is adopted, so that the switching between the heat dissipation mode and the sealing mode of the outer shell is realized, the rainproof performance of the cable branch box is improved on the basis of guaranteeing the heat dissipation performance of the box body, the probability of failure or accident of the cable branch box in rainy days is effectively reduced, and the problem that the existing cable branch box cannot have both the heat dissipation performance and the rainproof performance is solved.

Description

Rainproof type cable branch box

Technical Field

The invention relates to the technical field of electrical configuration, in particular to a rainproof cable branch box.

Background

The cable branch box is a box body for tapping and switching cables and is used as a cable branch. At present, the cable branch box is usually arranged outdoors, is not exposed to wind, rain and sun, especially in rainy days, once rainwater enters the box, electrical accessories in the box can be damaged, even leakage accidents occur, potential safety hazards are caused, and therefore the rain shielding (rain preventing) performance of the cable branch box is improved.

However, the existing cable branch box often needs to be provided with a heat dissipation hole on the side wall of the box body to dissipate heat in the box body, the design difficulty of the cable branch box with rainproof performance is increased due to the existence of the heat dissipation hole, and the existing cable branch box often cannot have both heat dissipation performance and rainproof performance. Therefore, it is necessary to provide an outdoor cable junction box with a rain shielding (rainproof) function.

Disclosure of Invention

The invention aims to provide a rainproof type cable branch box, which can improve the rain shielding (rainproof) performance of the cable branch box on the basis of guaranteeing the heat dissipation performance of a box body so as to solve the problem that the existing cable branch box cannot have both the heat dissipation performance and the rainproof performance.

In order to achieve the above object, the present invention provides the following solutions:

the invention provides a rain-proof cable branch box, comprising:

the outer box comprises an outer box shell, wherein the bottom of the outer box shell is provided with supporting legs, the front side of the outer box shell is provided with a door frame, the door frame is provided with a box door, the side wall of the outer box shell is provided with a heat dissipation area, and the heat dissipation area is provided with a plurality of heat dissipation holes which are distributed up and down;

the built-in mounting table is movably arranged in the outer box shell and is used for mounting electric accessories; the bottom of the built-in mounting table is connected with the outer box shell through a lifting mechanism, and the lifting mechanism is used for lifting the built-in mounting table relative to the outer box shell when raining;

the hole shielding assembly comprises a protruding block, a sliding rail, a hole shielding plate support and a hole shielding plate, the hole shielding plate support is vertically arranged between the built-in mounting table and the heat dissipation area of the outer box shell, a plurality of hole shielding plates are arranged on one side, facing the heat dissipation area, of the hole shielding plate support, and the hole shielding plates are in one-to-one correspondence with the heat dissipation holes of the heat dissipation area; the sliding rail is horizontally arranged above the heat dissipation area, one end of the sliding rail is connected with the inner wall of the outer box shell, the top of the shielding plate bracket is in sliding connection with the bottom of the sliding rail, a reset spring is connected between the shielding plate bracket and the heat dissipation area, the lug is arranged at a position, close to the bottom, of the side wall of the built-in mounting table, the side, far away from the built-in mounting table, of the protruding block gradually protrudes outwards from top to bottom, and the protruding block is used for extruding the shielding plate support towards the heat dissipation area in the process of lifting the built-in mounting table so that the corresponding heat dissipation holes are completely blocked by the shielding plate; the reset spring is used for pushing the shading plate support away from the radiating area after the built-in mounting table descends, so that the shading plate can completely open the corresponding radiating holes;

the monitoring assembly comprises a control module, a humidity sensor and a temperature sensor, wherein the humidity sensor, the temperature sensor and the lifting mechanism are all in communication connection with the control module.

Optionally, the built-in mounting table comprises a bottom plate and a mounting table arranged above the bottom plate, and the mounting table is used for mounting the electric fittings.

Optionally, four groups of the supporting legs are symmetrically arranged at the bottom of the outer case; the lifting mechanism comprises four electric telescopic rods, one electric telescopic rod is arranged in any group of supporting legs, and the top end of any electric telescopic rod penetrates through the bottom wall of the outer box shell and is connected with the bottom plate.

Optionally, sliding grooves extending from front to back are formed in the tops of two sides of the door frame, and the tops of two sides of the door are respectively hinged with the two sliding grooves in a sliding manner through pin shafts; the lower part of any one of the sliding grooves is provided with a supporting column, and when the box door is turned upwards around the pin shaft to be opened, the box door can be kept in a horizontal state under the support of the supporting column after sliding forwards and backwards along the sliding groove.

Optionally, the spout includes round hinge hole and the rectangle slide that link up in proper order around, the round pin axle with round hinge hole normal running fit, the round pin axle with rectangle slide sliding fit.

Optionally, a fan-shaped rainproof enclosure is connected between the tops of two sides of the box door and the door frame, and is contracted when the box door is closed and expanded when the box door is opened.

Optionally, the left and right side walls of the outer case are both provided with the heat dissipation areas, and any one of the heat dissipation areas and the built-in mounting table are both provided with the hole shielding assembly.

Optionally, any one of the heat dissipation holes is a strip heat dissipation hole extending from front to back, a rain-proof baffle is arranged above any one of the strip heat dissipation holes, and the outer end of any one of the rain-proof baffles is bent downwards.

Optionally, the bump includes an arc transition section and a straight section, the arc transition section protrudes towards the outer case, the top end of the arc transition section is connected with the built-in mounting table, and the bottom end of the arc transition section is connected with the top end of the straight section; buffer springs are arranged between the bottom of the arc transition section and the built-in mounting table and between the straight section and the built-in mounting table.

Optionally, a semiconductor condensation dehumidifying device is arranged in the outer case; and a lightning arrester is arranged at the outer top of the outer box shell.

Compared with the prior art, the invention has the following technical effects:

according to the rainproof type cable branch box, the lifting built-in mounting table is arranged in the outer box shell, and the hole shielding assembly is arranged between the built-in mounting table and the radiating area on the side wall of the outer box shell, so that the built-in mounting table can be driven to lift by the lifting mechanism in rainy days, and further the hole shielding assembly is triggered to shield and seal the radiating holes of the radiating area, and rainwater is prevented from entering the box due to the fact that the radiating holes are opened; when the rain is not raining, the built-in mounting table is driven by the lifting mechanism to reduce and reset, the hole shielding assembly fully opens the heat dissipation holes of the heat dissipation area, and the heat dissipation function of the heat dissipation holes is recovered. According to the invention, the lifting mechanism is adopted to drive the built-in mounting table to lift, and the ingenious structural arrangement of the hole shielding assembly is adopted, so that the switching between the heat dissipation mode and the sealing mode of the outer shell is realized, the rainproof performance of the cable branch box is improved on the basis of guaranteeing the heat dissipation performance of the box body, the probability of failure or accident of the cable branch box in rainy days is effectively reduced, and the problem that the existing cable branch box cannot have both the heat dissipation performance and the rainproof performance is solved. Meanwhile, the built-in installation table is lifted and arranged in a rainy day, so that the situation that water entering the outer box shell soaks and damages electrical equipment on the built-in installation table can be avoided, and the use safety of the cable branch box in the rainy day is further improved.

In some technical schemes of the invention, a sliding hinge fit mode is adopted between the door and the door frame of the outer case, so that the door is convenient to open and close, and the door can be kept in an open state without manual work; the box door in the opened state can be kept in a horizontal state, and the fan-shaped rainproof enclosure which is opened at two sides is matched to form a multidirectional rain shielding structure, so that the device can shield rain for operators who carry out equipment maintenance in rainy days, and the device has important significance for facilitating cable repair in outdoor rain; meanwhile, the formation of the multidirectional rain shielding structure can further prevent rainwater from entering the box, so that the safety of equipment maintenance in rainy days is effectively improved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of the overall structure of a rain-proof cable branch box according to an embodiment of the present invention;

fig. 2 is a schematic structural view of a door of the rainproof type cable branching box according to an embodiment of the present invention in an opened state;

FIG. 3 is a schematic diagram illustrating installation of a hole shielding assembly and a heat dissipation area in a rain-proof cable branch box according to an embodiment of the present invention;

fig. 4 is a schematic structural view of a rain-proof cable branch box according to an embodiment of the present invention when a built-in mounting table is at a lowest position;

FIG. 5 is a diagram showing a positional relationship between a bump and a mask plate holder (when a heat dissipation hole is opened) when a built-in mounting table according to an embodiment of the present invention is at a lowest position;

fig. 6 is a schematic structural diagram of a built-in installation table in a rain-proof cable branch box according to an embodiment of the present invention in a highest position;

FIG. 7 is a diagram showing the positional relationship between a bump and a mask plate bracket when the mounting table is at the highest position (in which the heat dissipation hole is blocked by the corresponding mask plate);

fig. 8 is a schematic structural diagram of a door and a door frame when a door is opened in the rainproof type cable branch box disclosed by the embodiment of the invention;

FIG. 9 is a front view of the structure between the door and the door frame when the door is opened in the rain-proof cable branch box according to the embodiment of the present invention;

FIG. 10 is an enlarged schematic view of the structure of FIG. 9A;

FIG. 11 is a schematic diagram illustrating an assembly structure of a door and a chute according to an embodiment of the present invention;

fig. 12 is a diagram showing a positional relationship between a door and a support column in a process from closing to fully opening of the door according to an embodiment of the present invention.

Wherein, the reference numerals are as follows:

100. a rain-proof cable branch box;

1. an outer case; 11. a door frame; 12. a door; 13. a heat radiation hole; 14. a chute; 141. a circular hinge hole; 142. rectangular slideway; 15. a pin shaft; 16. a support column; 17. sector rainproof enclosure; 18. a rain-proof baffle;

2. a support leg;

3. a built-in mounting table; 31. a bottom plate; 32. a mounting table;

4. an electric telescopic rod;

5. a hole shielding assembly; 51. a bump; 511. a circular arc transition section; 512. a straight section; 52. a slide rail; 53. a mask plate bracket; 54. a mask plate; 55. a return spring; 56. a buffer spring;

6. a semiconductor condensation dehumidifying device;

7. an arrester.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The invention aims to provide a rainproof type cable branch box, which can improve the rainproof performance of the cable branch box on the basis of guaranteeing the heat dissipation performance of a box body so as to solve the problem that the existing cable branch box cannot have both the heat dissipation performance and the rainproof performance.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

Example 1

As shown in fig. 1-12, the present embodiment provides a rain-proof cable branch box 100, which mainly includes an outer box shell 1, a built-in mounting table 3, a hole shielding assembly 5 and a monitoring assembly, wherein a supporting leg 2 is arranged at the bottom of the outer box shell 1, a door frame 11 is arranged at the front side of the outer box shell 1, a door 12 is configured at the door frame 11, a heat dissipation area is arranged on the side wall of the outer box shell 1, and a plurality of heat dissipation holes 13 are arranged from top to bottom in the heat dissipation area; the built-in mounting table 3 is movably arranged in the outer case 1 and is used for mounting and fixing electric accessories, cables and the like; the bottom of the built-in mounting table 3 is connected with the outer case 1 through a lifting mechanism, and the lifting mechanism is used for lifting the built-in mounting table 3 relative to the outer case 1 in raining; the hole shielding component 5 comprises a bump 51, a sliding rail 512, a hole shielding plate bracket 53 and a hole shielding plate 54, wherein the hole shielding plate bracket 53 is vertically arranged between the built-in mounting table 3 and a heat dissipation area of the outer box shell 1, one side of the hole shielding plate bracket 53 facing the heat dissipation area is provided with a plurality of hole shielding plates 54, and the hole shielding plates 54 are in one-to-one correspondence with the heat dissipation holes 13 of the heat dissipation area; the slide rail 512 is horizontally arranged above the heat dissipation area, one end of the slide rail 512 is connected with the inner wall of the outer box shell 1, the top of the orifice shielding plate support 53 is in sliding connection with the bottom of the slide rail 512, a reset spring 55 is connected between the orifice shielding plate support 53 and the heat dissipation area, the protruding block 51 is arranged at the position, close to the bottom, of the side wall of the built-in mounting table 3, one side, far away from the built-in mounting table 3, of the protruding block 51 is gradually protruded from top to bottom, the protruding block 51 is used for gradually extruding the orifice shielding plate support 53 towards the heat dissipation area by gradually protruded outer side contours until the orifice shielding plate 54 on the orifice shielding plate support 53 is attached to the inner wall of the outer box shell 1, so that the orifice shielding plate 54 completely seals the corresponding heat dissipation hole 13, the whole sealing of the outer box shell 1 is realized, and the effect of preventing rainwater from entering the box is achieved. The return spring 55 is used for pushing the shielding plate support 53 to disperse the hot area after the built-in mounting table 3 descends, so that the shielding plate 54 completely opens the corresponding heat dissipation hole 13, and the outer case 1 recovers the heat dissipation function. The monitoring assembly comprises a control module, a humidity sensor and a temperature sensor, wherein the humidity sensor, the temperature sensor and the lifting mechanism are all in communication connection with the control module, the humidity sensor is installed on the outer box shell 1 and can be installed outside the box or in the box, in order to ensure good heat dissipation in the box in a normal use state, each heat dissipation hole 13 of the heat dissipation area is in an open state, the inside of the outer box shell 1 is communicated with the outside of the outer box shell 1 at the moment, the humidity sensor detects the humidity in air, when the humidity value reaches a certain preset value, the control module receives a signal and judges that the temperature is in a raining state at the moment, then the control module can control the lifting mechanism to lift the built-in mounting table 3, and push the shielding plate support 53 to face the heat dissipation holes 13, so that shielding and blocking of the shielding plate on the heat dissipation holes 13 are realized, the whole sealing of the outer box shell 1 is realized, and a rainproof effect is achieved. Taking the humidity sensor arranged outside the outer case 1 as an example, when the humidity sensor detects that the humidity of the outside air drops to a certain set value, the control module receives a signal and judges that the outside air is in a non-raining state at the moment, then the control module can control the lifting mechanism to lower the built-in mounting table 3, the extrusion force on the orifice shielding plate support 53 is relieved by the convex block 51, and the orifice shielding plate support 53 can be far away from a heat dissipation area under the action of the reset spring 55, so that the orifice shielding plate 54 completely opens the corresponding heat dissipation hole 13, and the heat dissipation area of the outer case 1 recovers the heat dissipation function. The temperature sensor is generally only arranged in the outer case 1, when the temperature sensor detects that the internal environment temperature of the outer case 1 rises to a certain set value, the control module receives the high-temperature signal and controls to open the plugged radiating holes 13 to radiate heat and cool the inside of the case, or the control module directly sends out a remote alarm signal to remind maintenance personnel to carry out corresponding maintenance.

In the present embodiment, the built-in mount 3 includes a base plate 31 and a mount 32 provided above the base plate 31, and the mount 32 is used for mounting electric accessories or fixing cables. The above electrical accessories are conventional accessories for tapping or switching cables in the existing cable branch boxes, and are not described herein in detail. The mounting table 32 is preferably a rectangular parallelepiped structure, which is made of a pressure-resistant and explosion-proof stainless steel material, and the surface of the mounting table 32 is insulated by coating an insulating layer or the like.

In this embodiment, the outer case 1 is a rectangular case, and four sets of supporting legs 2 are symmetrically arranged at the bottom of the outer case 1, as shown in fig. 1 to 12, and the four sets of supporting legs 2 are respectively located at four corners of the bottom of the outer case 1; correspondingly, the lifting mechanism comprises four electric telescopic rods 4, any group of supporting legs 2 are hollow supporting legs, an electric telescopic rod 4 is arranged in any group of supporting legs 2, the bottom end of any electric telescopic rod 4 is connected with the supporting legs 2, and the top end of the electric telescopic rod penetrates through the bottom wall of the outer case 1 and is connected with the bottom plate 31. The bottom plate 31 is a rectangular plate, and four electric telescopic rods 4 are respectively connected to four corners of the lower surface of the bottom plate 31. The mode that this scheme adopted elevating system drive built-in mount table 3 to rise has realized the switching of outer case 1 heat dissipation mode and closed mode, simultaneously, rise the setting with built-in mount table 3 in rainy day, can also avoid the interior water of outer case 1 to cause soaking, damage to the electrical equipment on the built-in mount table 3, further promoted rainy day cable branch case's safety in utilization.

In this embodiment, as shown in fig. 8 to 11, sliding grooves 14 extending from front to back are formed at the top of two sides of the door frame 11, and the top of two sides of the door 12 is respectively hinged with the two sliding grooves 14 in a sliding manner through a pin 15, where "sliding hinged" means that the pin 15 is hinged with the corresponding sliding groove 14 and can slide along the corresponding sliding groove 14; the support column 16 is arranged below any sliding groove 14, and the support column 16 is positioned inside the outer case 1 and does not influence the opening and closing of the case door 12. When the door 12 is turned upwards around the pin 15 to be opened to be in a horizontal state and slides back to the upper side of the support column 16 along the chute 14, the door 12 can be kept in a horizontal state under the support of the support column 16. The support column 16 and the pin shaft 15 are arranged in parallel, the pin shaft 15 is of a cylindrical structure, and the support column 16 can be of a cylindrical structure or a prismatic structure.

In this embodiment, as shown in fig. 11 to 12, the chute 14 includes a circular hinge hole 141 and a rectangular slide 142 that are sequentially penetrating from front to back, the pin 15 is hinged to the circular hinge hole 141, that is, the pin 15 is in running fit with the circular hinge hole 141, the pin 15 is in sliding fit with the rectangular slide 142, and the pin 15 can slide into the rectangular slide 142 through the circular hinge hole 141. As shown in fig. 12, when the closed cabinet door 12 is turned over in the counterclockwise direction as shown in fig. 12, the cabinet door 12 gradually tends to be horizontal, when the cabinet door 12 is in the fully opened state, if electrical equipment maintenance is required, the opened state of the cabinet door 12 needs to be maintained, at this time, the cabinet door 12 in the horizontal state is horizontally moved in the direction of the leftward arrow as shown in fig. 12, the pin shaft 15 of the cabinet door 12 slides into the rectangular slide way 142 through the circular hinge hole 141, and then the cabinet door 12 continues to be moved leftward until the cabinet door 12 moves above the support column 16 and forms overlap with the support column 16, the cabinet door 12 can be released, at this time, the cabinet door 12 is supported by the support column 16, the opened state can be maintained without manual work, and at the same time, if equipment maintenance is performed in a rainy day, the opened cabinet door 12 can also play a role of keeping off a worker for maintenance and preventing rainwater from falling into the cabinet. If the door 12 is to be closed, the door 12 is moved in the reverse direction (pulled forward) until the pin 15 slides into the circular hinge hole 141 by the rectangular slide 142, and then the door 12 can be closed by turning down the door 12. In order to ensure the use safety of the cable branch box, a built-in lock structure is generally configured on the box door 12, and after the box door 12 is closed, the built-in lock is locked through the box door 12, so that electrical equipment is prevented from being lost, or an artificial touch electric shock accident occurs.

In this embodiment, a fan-shaped rainproof enclosure 17 is connected between the top of two sides of the door 12 and the door frame 11, and as shown in fig. 2 and 3, the fan-shaped rainproof enclosure 17 is contracted when the door 12 is closed and expanded when the door 12 is opened. The fan-shaped rainproof enclosure 17 can prevent rainwater from falling into the box from the side part of the door frame 1 when equipment maintenance is carried out in rainy days, the box door 12 which is opened and in a horizontal state and the fan-shaped rainproof enclosure 17 which is unfolded at two sides form a multidirectional rain shielding structure together, and the safety of equipment maintenance in rainy days is improved. The fan-shaped rainproof enclosure 17 is made of conventional rainproof cloth, such as terylene, PG cloth, nylon, transparent plastic and the like for manufacturing an umbrella, and is made of soft materials, which do not affect the opening and closing, overturning and moving of the box door 12 in a horizontal state, in actual operation, the fan-shaped rainproof enclosure 17 only plays an auxiliary rainproof role, and is not required to be connected with the door frame 1 and the box door 12 in a tight thread joint, and in the process of opening and horizontally moving the box door 12 to the upper side of the supporting column 16, the soft fan-shaped rainproof enclosure 17 allows a plurality of Xu Duidie folds to occur, but does not affect the moving of the box door 12.

In this embodiment, the left and right side walls of the outer casing 1 are provided with heat dissipation areas, and a hole shielding assembly 5 is disposed between any one of the heat dissipation areas and the built-in mounting table 3. Fig. 5 and 7 are schematic diagrams illustrating the cooperation of the two left and right groups of hole shielding assemblies 5 and the two left and right groups of heat dissipation areas. The structures of the left and right groups of heat dissipation areas are preferably identical, the two groups of heat dissipation areas are symmetrically arranged left and right, and the working states of the two groups of hole shielding assemblies 5 are also identical.

In this embodiment, any one of the heat dissipation holes 13 is preferably a strip heat dissipation hole extending from front to back, a rain-proof baffle 18 is disposed above any one of the strip heat dissipation holes, the outer end of any one of the rain-proof baffles 18 is bent downward, and the arrangement of the rain-proof baffle 18 can effectively prevent rainwater from falling into the box through the heat dissipation hole 13. Especially in the case of failure of the humidity sensor, failure of the lifting mechanism, etc., even if the heat radiation hole 13 is not plugged in time when it rains, the rain shield 18 can basically prevent rainwater from falling into the box through the heat radiation hole 13. The flashing 18 is preferably a three-sided semi-enclosed structure with both top and sides simultaneously flashing, which is preferably integrally formed with the outer housing 1.

In this embodiment, as shown in fig. 4 to 7, the bump 51 includes an arc transition section 511 and a straight section 512, the arc transition section 511 protrudes toward the outer case 1, the top end of the arc transition section 511 is connected to the built-in mounting table 3, and the bottom end of the arc transition section 511 is connected to the top end of the straight section 512; buffer springs 56 are arranged between the bottom of the arc transition section 511 and the built-in mounting table 3, and between the straight section 512 and the built-in mounting table 3. In the process of ascending the built-in mounting table 3, the arc transition section 511 moves upwards along with the arc transition section and pushes the shading plate support 53 to approach the heat dissipation area, when the bottommost end of the arc transition section 511 contacts the shading plate support 53, the shading plate support 53 is completely extruded on the side wall of the heat dissipation area of the outer case 1, the straight section 512 is vertically arranged and tangent to the bottommost end of the arc transition section 511, and as the built-in mounting table 3 continues to ascend, the straight section 512 keeps the extrusion state of the shading plate support 53, so that the plugging effect of the shading plate 54 is ensured; the provision of the buffer springs 56 further ensures that the straight sections 512 remain in contact with the shutter plate holder 53 throughout the ascent process, ensuring that the shutter plate 54 is effectively blocked.

In the embodiment, a semiconductor condensation dehumidifying device 6 is arranged in the outer case 1 and is used for dehumidifying the inner part of the outer case 1; the outer top of the outer case 1 is provided with a lightning arrester 7. The semiconductor condensation dehumidifying device 6 and the lightning arrester 7 are both in the prior art, and the specific structure and working principle of the two are not described herein.

According to the rainproof type cable branch box, the lifting built-in mounting table 3 is arranged in the outer box shell 1, and the hole shielding assembly is arranged between the built-in mounting table 3 and the radiating area on the side wall of the outer box shell 1, so that the built-in mounting table 3 can be driven to rise by the lifting mechanism in rainy days, and further the hole shielding assembly is triggered to shield and seal the radiating holes of the radiating area, so that rainwater is prevented from entering the box due to the fact that the radiating holes are opened; when the rain is not raining, the built-in mounting table 3 is driven by the lifting mechanism to lower and reset, the hole shielding assembly opens the heat dissipation holes of the heat dissipation area completely, and the heat dissipation holes restore the heat dissipation function. According to the scheme, the lifting mechanism is adopted to drive the built-in mounting table 3 to lift, and then the lifting mechanism is matched with ingenious structural arrangement of the hole shielding assembly, so that the switching of the heat dissipation mode and the sealing mode of the outer box shell 1 is realized, the rainproof performance of the cable branch box is improved on the basis of guaranteeing the heat dissipation performance of the box body, and the problem that the existing cable branch box cannot have both the heat dissipation performance and the rainproof performance is solved. Meanwhile, the built-in mounting table 3 is lifted and arranged in a rainy day, so that the situation that the water inlet in the outer box shell 1 is soaked in and damaged to electrical equipment on the built-in mounting table 3 can be avoided, and the use safety of the cable branch box in the rainy day is further improved.

In addition, the door and the door frame of the outer case 1 are matched in a sliding hinged manner, so that the door is convenient to open and close, and the door can be kept in an open state without manual work; and because the chamber door of open state can keep the horizontality, the fan-shaped rain-proof that the cooperation both sides were opened encloses the fender 17 jointly and encloses and close and form diversified structure that keeps off the rain, can hide the rain for the operating personnel who carries out equipment maintenance in rainy day, avoid the rainwater to get into the incasement simultaneously, effectively improved the security that carries out equipment maintenance in rainy day.

It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (10)

1. A rain-proof cable branch box, comprising:

the outer box comprises an outer box shell, wherein the bottom of the outer box shell is provided with supporting legs, the front side of the outer box shell is provided with a door frame, the door frame is provided with a box door, the side wall of the outer box shell is provided with a heat dissipation area, and the heat dissipation area is provided with a plurality of heat dissipation holes which are distributed up and down;

the built-in mounting table is movably arranged in the outer box shell and is used for mounting electric accessories; the bottom of the built-in mounting table is connected with the outer box shell through a lifting mechanism, and the lifting mechanism is used for lifting the built-in mounting table relative to the outer box shell when raining;

the hole shielding assembly comprises a protruding block, a sliding rail, a hole shielding plate support and a hole shielding plate, the hole shielding plate support is vertically arranged between the built-in mounting table and the heat dissipation area of the outer box shell, a plurality of hole shielding plates are arranged on one side, facing the heat dissipation area, of the hole shielding plate support, and the hole shielding plates are in one-to-one correspondence with the heat dissipation holes of the heat dissipation area; the sliding rail is horizontally arranged above the heat dissipation area, one end of the sliding rail is connected with the inner wall of the outer box shell, the top of the shielding plate bracket is in sliding connection with the bottom of the sliding rail, a reset spring is connected between the shielding plate bracket and the heat dissipation area, the lug is arranged at a position, close to the bottom, of the side wall of the built-in mounting table, the side, far away from the built-in mounting table, of the protruding block gradually protrudes outwards from top to bottom, and the protruding block is used for extruding the shielding plate support towards the heat dissipation area in the process of lifting the built-in mounting table so that the corresponding heat dissipation holes are completely blocked by the shielding plate; the reset spring is used for pushing the shading plate support away from the radiating area after the built-in mounting table descends, so that the shading plate can completely open the corresponding radiating holes;

the monitoring assembly comprises a control module, a humidity sensor and a temperature sensor, wherein the humidity sensor, the temperature sensor and the lifting mechanism are all in communication connection with the control module.

2. The drop box of claim 1, wherein the built-in mounting station comprises a base plate and a mounting station disposed above the base plate for mounting the electrical accessory thereon.

3. The rainproof cable breakout box of claim 2, wherein the bottom of the outer box housing is symmetrically provided with four sets of the legs; the lifting mechanism comprises four electric telescopic rods, one electric telescopic rod is arranged in any group of supporting legs, and the top end of any electric telescopic rod penetrates through the bottom wall of the outer box shell and is connected with the bottom plate.

4. A rain-proof cable branch box according to any one of claims 1 to 3, wherein the tops of both sides of the door frame are provided with sliding grooves extending from front to back, and the tops of both sides of the door frame are respectively hinged with the two sliding grooves in a sliding manner through pin shafts; the lower part of any one of the sliding grooves is provided with a supporting column, and when the box door is turned upwards around the pin shaft to be opened, the box door can be kept in a horizontal state under the support of the supporting column after sliding forwards and backwards along the sliding groove.

5. The rainproof type cable of claim 4, wherein the chute comprises a circular hinge hole and a rectangular slide way which are sequentially communicated from front to back, the pin shaft is in running fit with the circular hinge hole, and the pin shaft is in sliding fit with the rectangular slide way.

6. The rain-proof cable branch box of claim 4, wherein a fan-shaped rain-proof enclosure is connected between the top of both sides of the box door and the door frame, and the fan-shaped rain-proof enclosure contracts when the box door is closed and expands when the box door is opened.

7. A rain-proof cable branch box according to any one of claims 1 to 3, wherein the heat dissipation areas are provided on both the left and right side walls of the outer casing, and the hole shielding assembly is provided between any one of the heat dissipation areas and the built-in mounting table.

8. The rainproof cable of claim 7, wherein any one of the heat dissipation holes is a strip heat dissipation hole extending from front to back, a rainproof baffle is arranged above any one of the strip heat dissipation holes, and the outer end of any one of the rainproof baffles is bent downwards.

9. The rain-proof cable branch box of claim 7, wherein the bump comprises a circular arc transition section and a straight section, the circular arc transition section protrudes toward the outer box shell, the top end of the circular arc transition section is connected with the built-in mounting table, and the bottom end of the circular arc transition section is connected with the top end of the straight section; buffer springs are arranged between the bottom of the arc transition section and the built-in mounting table and between the straight section and the built-in mounting table.

10. A rain-proof cable branch box according to any one of claims 1 to 3, wherein a semiconductor condensation dehumidifying apparatus is provided inside the outer box housing; and a lightning arrester is arranged at the outer top of the outer box shell.

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