A new type of distribution box

Abstract

The utility model relates to a novel distribution box, including box and door, and being located in the total isolator, total circuit breaker, branch isolator and branch circuit breaker of box, total isolator and total circuit breaker's input electric connection, the output of total circuit breaker has a plurality of branch, its innovation lies in: the bottom in the box is equipped with resin fire -retardant board, be equipped with a plurality of with external environment and separate arrangement's threading hole on resin fire -retardant board, the cable line of branch circuit breaker wiring end on each branch passes adjustable fire -proof ring and goes out the corresponding threading hole on resin fire -retardant board, the lower part in the box is equipped with PE connection row, and the PE line of each branch is connected to PE connection row respectively, and PE connection row and door wire connection form branch grounding. The utility model can completely eliminate the problem that the traditional formula fire -resistant mortar is not blocked in place before, and improve the temporary power safety factor.

Description

Technical Field

[0001] This utility model specifically relates to a new type of electrical distribution box suitable for use on construction sites. Background Technology

[0002] Currently, temporary power supply at construction sites is achieved through dedicated power distribution boxes, which connect the power supply system to the equipment. Existing distribution boxes are made of cold-rolled steel. Electrical appliances are first mounted on a metal or non-wooden flame-retardant insulating mounting plate, and then the entire assembly is securely fastened to the box. The mounting plate has an N-terminal board and a PE-terminal board. The metal box, the mounting plate, and the normally non-energized metal base of the appliances are electrically connected to the grounding conductor via the PE-terminal board. The metal box door is electrically connected to the metal box body using a soft-insulated wire.

[0003] The disadvantages of this type of distribution box structure are as follows: First, since the wire inlets and outlets of the distribution box are located at the bottom of the box, the wires often enter and exit directly in a hollowed-out manner. Even if a metal base plate is used to make holes for wires and then sealed with fireproof putty, the fireproof putty is prone to not being properly sealed or even falling off. Second, the jumper wires between the PE terminal block and the box body are relatively messy, which is not conducive to electrical circuit management. At the same time, the distribution box is generally installed in an outdoor environment, which creates a temporary power safety hazard for this type of distribution box. Utility Model Content

[0004] The purpose of this utility model is to provide a new type of distribution box that is not only simple in structure and easy to use, but also completely eliminates the problem of inadequate sealing by traditional fireproof sealant and improves the safety factor of temporary power supply.

[0005] To achieve the above objectives, the technical solution of this utility model is: a novel distribution box, comprising a box body and a box door, and a main disconnect switch, a main circuit breaker, branch disconnect switches, and branch circuit breakers disposed within the box body. One side of the box door is hinged to the box body. The main disconnect switch is electrically connected to the input terminal of the main circuit breaker. The output terminal of the main circuit breaker has multiple branches, each branch consisting of branch disconnect switches and branch circuit breakers connected in series. Its innovation lies in:

[0006] The bottom of the enclosure is provided with a resin flame-retardant board. The resin flame-retardant board has multiple wiring holes that are open to the external environment but arranged separately. The cables of the branch circuit breaker terminals on each branch pass through the corresponding wiring holes on the resin flame-retardant board through adjustable fireproof rings, so that the cables form a sealed connection with the wiring holes of the resin flame-retardant board under the action of the adjustable fireproof rings.

[0007] The lower part of the enclosure is equipped with a PE connection bar. The PE line of each branch is connected to the PE connection bar, and the PE connection bar is connected to the door wire to form a branch ground.

[0008] In the above technical solution, the PE connecting bar has an L-shaped structure, and the two ends of the wire connecting the PE connecting bar and the box door are fixedly connected to the PE connecting bar and the box door respectively by wing nuts.

[0009] In the above technical solution, a radiator is provided on the side wall of the box body near the top to ensure that the inside of the box body is dry. An alarm device is provided on the front side of the radiator, and the alarm device is electrically connected to the hinge door closer on the box door.

[0010] In the above technical solution, an electric heater for dehumidifying the interior of the box is provided on the side wall of the box body and near the resin flame retardant board.

[0011] In the above technical solution, a transparent insulating baffle is provided inside the box and outside the branch circuit breaker. The bottom of the transparent insulating baffle is provided with a transparent insulating flap that is hinged to it by a damping hinge. The transparent insulating flap is located outside the outgoing terminal block that is connected to the conductor of the branch circuit breaker.

[0012] In the above technical solution, an LED light is provided on the top of the box.

[0013] In the above technical solution, an exhaust hole is provided on the outer side wall of the box, and a rain cover is provided on the box at the exhaust hole.

[0014] In the above technical solution, the outer wall of the enclosure is provided with an enclosure grounding terminal to prevent the enclosure from becoming energized.

[0015] In the above technical solution, the inner wall of the box door is provided with a rubber sealing ring around its perimeter, which forms a sealed connection with the opening of the box body.

[0016] In the above technical solution, the inner wall of the box door is provided with a file folder for storing test jump inspection records.

[0017] The positive effects of this utility model are as follows: With the new distribution box of this utility model, a resin flame-retardant board is provided at the bottom of the box body. This resin flame-retardant board has multiple separately arranged wiring holes that communicate with the external environment. The cables from the branch circuit breaker terminals of each branch pass through the corresponding wiring holes on the resin flame-retardant board via adjustable fireproof rings, thus forming a sealed connection between the cables and the wiring holes of the resin flame-retardant board under the action of the adjustable fireproof rings.

[0018] Because a resin flame-retardant board is added to the bottom of the enclosure, it not only has excellent tensile, compressive and impact resistance, ensuring the stability of the incoming and outgoing line connections, but also has high flame retardancy, which can effectively reduce the possibility of fire. Furthermore, because an adjustable fireproof ring is provided in the wire hole of the resin flame-retardant board, it can ensure that a seal is formed between the resin flame-retardant board and the cable, completely eliminating the problem of inadequate sealing with traditional fireproof putty, and also preventing the fireproof putty from falling off as in existing technologies.

[0019] Furthermore, since the lower part of the enclosure is equipped with a PE connection bar, the PE line of each branch is connected to the PE connection bar, and the PE connection bar is connected to the door wire to form a branch ground. In order to make the PE connection bar ground, the jumper wire between the enclosure and the PE connection bar is simplified.

[0020] In summary, this utility model is not only simple in structure but also easy to use. It can completely eliminate the problem of inadequate sealing with traditional fireproof putty and improve the safety factor of temporary power supply. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of a specific embodiment of the present invention. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and the given embodiments, but it is not limited thereto.

[0023] like Figure 1 As shown, a novel distribution box includes a box body 1 and a box door 2, as well as a main disconnect switch 3, a main circuit breaker 4, branch disconnect switches 5, and branch circuit breakers 6 disposed within the box body 1. One side of the box door 2 is hinged to the box body 1. The main disconnect switch 3 is electrically connected to the input terminal of the main circuit breaker 4. The output terminal of the main circuit breaker 4 has multiple branches, each branch consisting of a series connection of a branch disconnect switch 5 and a branch circuit breaker 6.

[0024] The bottom of the housing 1 is provided with a resin flame-retardant board 7. The resin flame-retardant board 7 has multiple wiring holes that are open to the external environment and arranged separately. The cable of the branch circuit breaker 6 terminal on each branch passes through the corresponding wiring hole on the resin flame-retardant board 7 through an adjustable fireproof ring 8, so that the cable forms a sealed connection with the wiring hole of the resin flame-retardant board 7 under the action of the adjustable fireproof ring 8.

[0025] The lower part of the enclosure 1 is provided with a PE connection bar 9. The PE line of each branch is connected to the PE connection bar 9, and the PE connection bar 9 is connected to the wire of the enclosure door 2 to form a branch ground.

[0026] Furthermore, such as Figure 1As shown, in order to make the structure more reasonable and further simplify the bridging between the box and the PE connecting strip, facilitate inspection and tightening, and prevent loosening, the PE connecting strip 9 has an L-shaped structure, and the two ends of the wire connecting the PE connecting strip 9 and the box door 2 are fixedly connected to the PE connecting strip 9 and the box door 2 respectively by wing nuts.

[0027] Furthermore, such as Figure 1 As shown, in order to prevent the temperature inside the box from getting too high and affecting the normal operation of the electrical appliances, a radiator 10 is provided on the side wall of the box 1 near the top to keep the inside of the box 1 dry. When the temperature inside the box is higher than 40°C, the radiator 10 is turned on to keep the inside of the box dry. An alarm device 11 is provided on the front side of the radiator 10, and the alarm device 11 is electrically connected to the hinge door closer on the box door 2. When the alarm is in automatic mode, the alarm will be turned on when the box door is opened. Specifically, when the distribution box is powered on, if the box door is opened, the alarm device 11 will sound an alarm to remind the operator that the box is energized, and the alarm device 11 can be manually deactivated.

[0028] Furthermore, such as Figure 1 As shown, in order to prevent the temperature inside the box 1 from being too low or too damp, an electric heater 12 for dehumidifying the inside of the box is provided on the side wall of the box 1 and near the resin flame retardant board 7.

[0029] In existing technology, the insulating cover plate of the terminal block under the branch circuit breaker in the distribution box has a concave-convex design. It is removed when wiring is required and replaced after wiring is completed. However, in daily use, the insulating cover plate of the terminal block is often lost, which exposes the live metal parts and poses a certain safety hazard.

[0030] To overcome the above problems, further, such as Figure 1 As shown, to prevent the insulation cover from being lost and to provide good safety protection for the branch circuit breaker and outgoing terminal blocks, a transparent insulating baffle 13 is provided inside the housing 1 and outside the branch circuit breaker 6. A transparent insulating flap 131 is hinged to the bottom of the transparent insulating baffle 13 via a damping hinge. The transparent insulating flap 131 is located outside the outgoing terminal block 14, which is connected to the conductors of the branch circuit breaker 6. The transparent insulating baffle 13 and the transparent insulating flap 131 are connected by a damping hinge, which not only fixes the opening angle of the transparent insulating flap and eliminates the problem of insulation cover loss that often occurs in the past, but also facilitates wiring by electricians.

[0031] Furthermore, such as Figure 1 As shown, in order to facilitate electrical maintenance at night or under poor lighting conditions, an LED light 19 is provided on the top of the enclosure 1, and the LED light can be automatically controlled by adding a limit switch, making it more convenient to use.

[0032] The housing 1 of this utility model is equipped with an independent leakage current protector, which is used to control the radiator 10, alarm device 11, electric heater 12 and LED lighting 19.

[0033] Furthermore, such as Figure 1 As shown, in order to prevent foreign objects or rainwater from entering the box through the vent and damaging the electrical appliances, and to improve the rainproof performance, the outer side wall of the box 1 is provided with a vent, and a rain cover 15 is provided on the box 1 at the vent.

[0034] Furthermore, such as Figure 1 As shown, in order to further improve the electrical safety of the enclosure and prevent the risk of electric shock due to accidental contact, the outer wall of the enclosure 1 is provided with an enclosure grounding terminal 16 to prevent the enclosure 1 from becoming energized.

[0035] Furthermore, such as Figure 1 As shown, in order to increase the waterproof sealing of the door, the inner wall of the door 2 is provided with a rubber sealing ring 17 that forms a sealing connection with the periphery of the opening of the box body 1.

[0036] Furthermore, such as Figure 1 As shown, in order to standardize organization and facilitate the viewing of daily usage, the inner wall of the box door 2 is provided with a file folder 18 for storing test jump inspection records.

[0037] In summary, the advantages of the distribution box of this utility model are:

[0038] 1. The bottom of the distribution box of this utility model is equipped with a resin flame-retardant board and an adjustable fireproof ring is provided in the wire hole to improve the sealing between the cable and the wire hole and completely eliminate the problem of inadequate sealing by traditional fireproof putty.

[0039] 2. The L-shaped PE connection bar of this utility model has N+1 reserved wiring holes to ensure that the PE line of each circuit is connected to the P bar separately, where N is the number of outgoing circuits of the distribution box.

[0040] 3. The enclosure of this utility model uses a wing nut for connection, which is convenient for inspection and tightening, and can be directly connected to the L-type PE connector, simplifying the jumper wire between the enclosure and the PE connector.

[0041] 4. This utility model is equipped with ventilation and heat dissipation measures, and is equipped with an induction radiator and heater, which automatically turn on when the temperature is below 0℃ or above 40℃ to ensure that the inside of the box is dry.

[0042] 5. The distribution box door of this utility model is equipped with rubber sealing rings around its perimeter to increase the waterproof sealing performance of the door; a rain cover is added to the vent to effectively enhance the rainproof performance of the distribution box.

[0043] 6. The terminal block of this utility model is equipped with a continuous insulating baffle and a damping hinge (to fix the opening angle of the insulating baffle), which not only eliminates the problem of the insulating baffle being lost that often occurred in the past, but also facilitates wiring by electricians.

[0044] 7. An alarm device is installed inside the box of this utility model. When the power distribution box is powered on and the box door is opened, an alarm will be automatically sounded to remind the operator that the box is energized. The alarm device can be manually deactivated.

[0045] 8. The top of the enclosure of this utility model is equipped with an LED light, which is automatically turned on and off by a limit switch, greatly facilitating electrical maintenance at night or under poor lighting conditions.

[0046] 9. The cabinet door is equipped with an integrated file folder for storing test jump inspection records.

[0047] This utility model not only improves the safety standardization of power distribution boxes at construction sites, but also sets up multiple protective measures to eliminate potential safety hazards of temporary power supply.

[0048] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A novel distribution box, comprising a box body (1) and a box door (2), and a main disconnect switch (3), a main circuit breaker (4), branch disconnect switches (5) and branch circuit breakers (6) disposed within the box body (1), wherein one side of the box door (2) is hinged to the box body (1), the main disconnect switch (3) is electrically connected to the input terminal of the main circuit breaker (4), and the output terminal of the main circuit breaker (4) has multiple branches, each branch consisting of a series-connected branch disconnect switch (5) and a branch circuit breaker (6), characterized in that: The bottom of the enclosure (1) is provided with a resin flame-retardant board (7). The resin flame-retardant board (7) has multiple wiring holes that are open to the external environment and arranged separately. The cable of the branch circuit breaker (6) terminal on each branch passes through the corresponding wiring hole on the resin flame-retardant board (7) through the adjustable fireproof ring (8), so that the cable forms a sealed connection with the wiring hole of the resin flame-retardant board (7) under the action of the adjustable fireproof ring (8). The lower part of the enclosure (1) is provided with a PE connection bar (9), and the PE line of each branch is connected to the PE connection bar (9), and the PE connection bar (9) is connected to the wire of the door (2) to form a branch ground.

2. The novel distribution box according to claim 1, characterized in that: The PE connector (9) has an L-shaped structure, and the two ends of the wire connecting the PE connector (9) and the door (2) are fixedly connected to the PE connector (9) and the door (2) respectively by wing nuts.

3. The novel distribution box according to claim 1, characterized in that: A radiator (10) is provided on the side wall of the box (1) near the top to ensure that the inside of the box (1) is dry. An alarm device (11) is provided on the front side of the radiator (10), and the alarm device (11) is electrically connected to the hinge door closer on the box door (2).

4. The novel distribution box according to claim 1, characterized in that: An electric heater (12) for dehumidifying the interior of the box is provided on the side wall inside the box (1) and near the resin flame retardant board (7).

5. The novel distribution box according to claim 1, characterized in that: A transparent insulating baffle (13) is provided inside the housing (1) and outside the branch circuit breaker (6). A transparent insulating flap (131) is provided at the bottom of the transparent insulating baffle (13) and is hinged to it by a damping hinge. The transparent insulating flap (131) is located outside the outgoing terminal block (14) connected to the conductor of the branch circuit breaker (6).

6. The novel distribution box according to claim 1, characterized in that: An LED lighting lamp (19) is provided on the top of the box (1).

7. The novel distribution box according to claim 1, characterized in that: The outer side wall of the box (1) is provided with an exhaust hole, and a rain cover (15) is provided on the box (1) at the exhaust hole.

8. The novel distribution box according to claim 1, characterized in that: The outer wall of the enclosure (1) is provided with an enclosure grounding terminal (16) to prevent the enclosure (1) from becoming energized.

9. The novel distribution box according to claim 1, characterized in that: The inner wall of the box door (2) is provided with a rubber sealing ring (17) that forms a sealing connection with the periphery of the opening of the box body (1).

10. The novel distribution box according to claim 1, characterized in that: The inner wall of the box door (2) is provided with a file folder (18) for storing test jump inspection records.

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