Emergency low voltage access distribution box

Abstract

The utility model provides a kind of emergency low-voltage access distribution box, including box, ring, box door, magnetic attraction pad, the top surface of the box is fixedly connected with several rings, the front of the box is movably connected with box door, the front of the box is installed with a magnetic attraction pad, the edge of the box door is adsorbed with magnetic attraction pad;Several ventilation fans are installed on the backboard of the box.The utility model has the advantages that when opening box door and maintaining internal components and switches, rotate main lock, the first bevel gear on the panel linked with main lock rotates, rotates through second bevel gear and drives rotating rod, rotating rod drives connecting rod to swing forward, drives pull rod front top, mechanical tripping front top opens gate and cuts off power, so that before technician opens box door, entire distribution box is a mechanical power-off safety state, eliminates electric shock risk, and safety is high;Box front is installed with a magnetic attraction pad, so that box door does not exist false state, and box door can be adsorbed when closing close.

Description

Technical Field

[0001] This utility model relates to the field of distribution box technology, and in particular to an emergency low-voltage access distribution box. Background Technology

[0002] In scenarios such as power system emergency repairs, natural disaster relief, large-scale event support, or temporary facility construction, it is necessary to quickly connect emergency power sources (such as mobile generators) to restore low-voltage power supply to critical areas. One of the core devices in such emergency low-voltage power supply systems is the temporary distribution box, whose function is to safely and reliably receive the electrical output from emergency power generation equipment and supply power to end loads through standardized power distribution paths.

[0003] Currently, traditional or simplified emergency distribution boxes generally have significant safety and reliability hazards. On the one hand, when the main power grid is interrupted, ordinary citizens, lacking professional protective awareness and equipment, are highly susceptible to fatal electric shock accidents when contacting temporary power distribution equipment in damp or complex environments. Statistical data shows that non-standardized temporary power distribution devices are a high-incidence area for electrical accidents. On the other hand, existing technical solutions are inadequate in addressing the following key needs: First, the forced power outage guarantee before opening the box for maintenance is insufficient. Conventional box door locks only provide physical isolation; during the operator's unlocking and opening process, internal live components (such as exposed terminals and undisconnected switches) still pose a high-voltage risk, resulting in insufficient safety. Therefore, an emergency low-voltage access distribution box is proposed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to at least solve one of the aforementioned technical defects.

[0005] Therefore, one objective of this utility model is to propose an emergency low-voltage access distribution box to solve the problems mentioned in the background art and overcome the shortcomings of the existing technology.

[0006] To achieve the above objectives, one embodiment of this utility model provides an emergency low-voltage access distribution box, including a box body, lifting rings, a box door, and a magnetic pad. Several lifting rings are fixedly connected to the top surface of the box body, and a box door is movably connected to the front surface of the box body. A magnetic pad is installed on the front surface of the box body, and the edge of the box door is attracted to the magnetic pad.

[0007] Several ventilation fans are installed on the back panel of the enclosure, and air inlets are provided on the top, front and lower back of the enclosure.

[0008] The box body is fixedly connected to several internal rails;

[0009] A panel is fixedly connected to the front opening inside the box, and two main locks are installed on the box door. The box door can only be opened when both main locks are opened.

[0010] The back of the panel is movably connected to a first bevel gear, which is linked to the main lock when the door is closed.

[0011] A rotating rod is movably connected to the back of the panel, and a second bevel gear is fixedly connected to the end of the rotating rod. One side of the second bevel gear is movably connected to the first bevel gear.

[0012] A connecting rod is fixedly connected to the outer surface of the rotating rod, and a pull rod is movably connected to the top of the inner side of the connecting rod. A knife gate is fixedly connected to the front end of the pull rod.

[0013] Preferably, in any of the above solutions, the lifting ring is connected to the housing by screws, and the air inlet of the ventilation fan is connected to the interior of the housing.

[0014] The above technical solution involves an emergency low-voltage distribution box. An output terminal of an emergency generator vehicle can be connected through a side opening to achieve emergency low-voltage power supply.

[0015] In this device: the housing is the main body of the device, the lifting rings are used to assist in the hoisting of the device, the housing can only be powered on after the housing door is closed and locked, when the ventilation fan is working, air enters the housing through the air inlet and then exits from the air outlet of the ventilation fan to achieve the purpose of ventilation and heat dissipation, and various components and switches are installed on the inner rail inside the housing.

[0016] The core design of this device consists of: a door, magnetic pad, panel, main lock, first bevel gear, rotating rod, second bevel gear, connecting rod, pull rod, and mechanical trip. The panel has a corresponding lock seat for the main lock. This distribution box offers enhanced security. When the door needs to be opened for maintenance of internal components or switches, rotating the main lock causes the first bevel gear on the panel, linked to the main lock, to rotate. This, in turn, drives the rotating rod to rotate, which in turn drives the connecting rod forward, pushing the pull rod forward and triggering the mechanical trip mechanism of the main circuit breaker to forcibly disconnect the power supply. This physically isolates and cuts off the main circuit power within the box. Thus, before technicians open the door, the entire distribution box is in a mechanically de-energized safe state, eliminating the risk of electric shock and ensuring high safety.

[0017] After the box door is closed, the main lock engages with the first bevel gear sleeve shaft. At this time, only by rotating the main lock can the box door be locked. The rotating rod drives the connecting rod to swing backward, which drives the pull rod to retract. The mechanical release retracts and the circuit breaker is closed and energized, that is, the power distribution box is powered after the box door is closed and locked.

[0018] A magnetic pad is installed on the front of the box to ensure that the door is not ajar and can be magnetically attached to close when the box is brought close.

[0019] Preferably, in any of the above solutions, the inner rail is located in the middle of the box body, and the inner rail is provided with a number of positioning holes.

[0020] The above technical solution is adopted: The device structure consists of: Enclosure: serving as the main structure of the device, providing the mounting foundation and protecting the internal components. The enclosure material ensures insulation and weather resistance.

[0021] Lifting ring: Connected to the box body with screws and fixed to the top of the box body, making it easy for cranes or manual lifting to move this device.

[0022] Cabinet door: Movable connection to the front of the cabinet, used to seal the internal space. The main lock must be unlocked before opening the cabinet door.

[0023] Magnetic pad: Installed on the front of the cabinet, made of soft magnetic material, it automatically attracts when the cabinet door is close, eliminating gaps and preventing dust or moisture from entering.

[0024] Ventilation fan: Installed on the back panel of the enclosure, the fan's inlet connects to the interior of the enclosure. During operation, it draws in hot air from inside and exhausts it through the outlet. The ventilation fan is powered by an internal power supply and equipped with a temperature sensor for automatic start and stop.

[0025] Air inlets: Located on the top, front, and lower rear of the enclosure, and also include side openings for air inflow and cable connection. The side openings are sized to fit a standard generator truck interface, allowing the output cable from an emergency generator truck to be routed for low-voltage power input.

[0026] Inner rail: Fixedly connected to the middle of the box body, the inner rail has several positioning holes to facilitate the installation and fixing of power distribution components (such as terminals or circuit breakers) and ensure that the position of the components is adjustable.

[0027] Panel: Fixedly connected to the front opening inside the enclosure, serving as a support base for the main lock and linkage mechanism. The panel, in conjunction with the main lock, securely locks the enclosure door, ensuring electrical safety.

[0028] Main locks: Two main locks are installed on the door, using either mechanical keys or electronic locks. Both locks must be opened simultaneously to unlock the door. The locking status of the main locks controls the position of the first bevel gear.

[0029] First bevel gear: movably connected to the back of the panel and linked to the main lock. When the main lock rotates, it drives the first bevel gear to rotate, transmitting mechanical motion. The first and second bevel gears are arranged at a 90-degree angle.

[0030] Rotary rod: Movably connected to the back of the panel, featuring a damping design (achieved through bearings or a friction structure) to ensure smooth movement. The rotary rod and connecting rod are fixed together with screws.

[0031] The second bevel gear is fixedly connected to the end of the rotating rod and meshes with the first bevel gear. It is used to convert the rotational motion of the first bevel gear into the rotation of the rotating rod.

[0032] Connecting rod: Fixedly connected to the outer surface of the rotating rod, the connecting rod drives the pull rod to move linearly when it rotates.

[0033] Pull rod: It is movably connected to the top of the inner side of the connecting rod and serves as a power transmission element, converting rotational motion into linear motion.

[0034] Knife switch: Fixedly connected to the front end of the lever, the knife switch is a circuit breaker blade used to cut off or connect the internal circuit. When the lever moves, the knife switch moves forward or backward, controlling the circuit's on / off state.

[0035] Preferably, in any of the above solutions, the panel, in conjunction with the main lock, secures the door, and the first bevel gear and the second bevel gear form a 90-degree angle.

[0036] Preferably, in any of the above embodiments, the rotating rod has a damping force, and the rotating rod is connected to the connecting rod by screws.

[0037] Preferably, in any of the above schemes, the switch moves forward or backward when the connecting rod rotates.

[0038] Compared with the prior art, the advantages and beneficial effects of this utility model are as follows:

[0039] This emergency low-voltage distribution box is designed with a combination of a door, magnetic pad, panel, main lock, first bevel gear, rotating rod, second bevel gear, connecting rod, pull rod, and mechanical trip. The panel has a corresponding lock seat for the main lock. This distribution box offers enhanced security. When the door needs to be opened for maintenance of internal components or switches, rotating the main lock causes the first bevel gear on the panel, linked to the main lock, to rotate. This, in turn, rotates the second bevel gear, causing the rotating rod to rotate. The rotating rod then drives the connecting rod forward, pushing the pull rod forward and triggering the mechanical trip to disconnect the power. Thus, before technicians open the door, the entire distribution box is in a mechanically de-energized state, eliminating the risk of electric shock and ensuring high safety.

[0040] A magnetic pad is installed on the front of the box to ensure that the door is not ajar and can be magnetically attached to close when the box is brought close.

[0041] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0042] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0043] Figure 1 This is a first-view structural schematic diagram of the present invention;

[0044] Figure 2 This is a schematic diagram of the structure of the panel of this utility model;

[0045] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0046] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A;

[0047] Figure 5 This is a structural schematic diagram of the present invention from a second perspective.

[0048] In the diagram: 1-box body, 2-lifting ring, 3-box door, 4-magnetic pad, 5-ventilation fan, 6-air inlet, 7-inner rail, 8-panel, 9-main lock, 10-first bevel gear, 11-rotating rod, 12-second bevel gear, 13-connecting rod, 14-pull rod, 15-mechanical release. Detailed Implementation

[0049] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0050] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0051] like Figure 1-5 As shown, this emergency low-voltage access distribution box includes a box body 1, lifting rings 2, a box door 3, and a magnetic pad 4. Several lifting rings 2 are fixedly connected to the top surface of the box body 1, and the box door 3 is movably connected to the front of the box body 1. A magnetic pad 4 is installed on the front of the box body 1, and the edge of the box door 3 is attracted to the magnetic pad 4.

[0052] Several ventilation fans 5 are installed on the back panel of the enclosure 1, and air inlets 6 are provided on the top, front and lower back of the enclosure 1.

[0053] The internal structure of the housing 1 is fixedly connected with several internal rails 7;

[0054] A panel 8 is fixedly connected to the front opening inside the box 1. Two main locks 9 are installed on the box door 3. The box door 3 can only be opened when the two main locks 9 are opened.

[0055] A first bevel gear 10 is movably connected to the back of panel 8. The first bevel gear 10 is linked to the main lock 9 when the door 3 is closed.

[0056] A rotating rod 11 is movably connected to the back of panel 8. A second bevel gear 12 is fixedly connected to the end of the rotating rod 11. One side of the second bevel gear 12 is movably connected to the first bevel gear 10.

[0057] A connecting rod 13 is fixedly connected to the outer surface of the rotating rod 11, and a pull rod 14 is movably connected to the top of the inner side of the connecting rod 13. A knife gate 15 is fixedly connected to the front end of the pull rod 14.

[0058] Example 1: The lifting ring 2 is connected to the housing 1 by screws, and the air inlet of the ventilation fan 5 is connected to the interior of the housing 1. The inner rail 7 is located in the middle of the interior of the housing 1, and several positioning holes are provided on the inner rail 7. The panel 8 locks the door 3 in conjunction with the main lock 9, and the first bevel gear 10 and the second bevel gear 12 are at a 90-degree angle. The rotating rod 11 has damping force, and the rotating rod 11 is connected to the connecting rod 13 by screws. When the connecting rod 13 rotates, the gate 15 moves forward or backward.

[0059] Example 2: This device is an emergency low-voltage distribution box. The output of an emergency generator can be connected through the side opening to achieve emergency low-voltage power supply. In this device: the box body 1 is the main body; the lifting ring 2 assists in hoisting the device; the box body can only be energized after the box door 3 is closed and locked; when the ventilation fan 5 is working, air enters the box body 1 through the air inlet 6 and then exits from the air outlet of the ventilation fan 5, achieving ventilation and heat dissipation; various components and switches are installed on the inner rail 7 inside the box body 1.

[0060] Device structure composition: Enclosure 1: Serves as the main structure of this device, providing the mounting base and protecting the internal components. The material of Enclosure 1 ensures insulation and weather resistance.

[0061] Lifting ring 2: It is connected to the box 1 by screws and fixed to the top of the box 1, so as to facilitate the lifting and moving of this device by crane or manpower.

[0062] Door 3: Movably connected to the front of the box 1, used to seal the internal space of the box 1. The main lock 9 must be unlocked before opening door 3.

[0063] Magnetic pad 4: Installed on the front of the box 1, made of soft magnetic material, it automatically attracts when the box door 3 approaches, eliminating gaps and preventing dust or moisture from entering.

[0064] Ventilation fan 5: Installed on the back panel of enclosure 1, the air inlet of ventilation fan 5 connects to the interior of enclosure 1. During operation, it draws in hot air from inside and exhausts it from the outlet. Ventilation fan 5 is powered by an internal power supply and is equipped with a temperature sensor for automatic start and stop.

[0065] Air inlet 6: Located on the top, front, and lower back of housing 1, and also includes a side opening for air inflow and cable connection. The side opening is sized to fit a standard generator vehicle interface, allowing the output cable of an emergency generator vehicle to be inserted for low-voltage power input.

[0066] Inner rail 7: Fixedly connected to the middle of the inside of the housing 1. Several positioning holes are provided on the inner rail 7 to facilitate the installation and fixing of power distribution components (such as terminals or circuit breakers) and ensure that the position of the components is adjustable.

[0067] Panel 8: Fixedly connected to the front opening inside the enclosure 1, serving as a support base for the main lock 9 and the linkage mechanism. Panel 8, in conjunction with the main lock 9, locks the enclosure door 3, ensuring electrical safety.

[0068] Main lock 9: Two main locks 9 are installed on the door 3, using mechanical keys or electronic locks. They must be opened simultaneously to unlock the door 3. The locked state of the main lock 9 controls the position of the first bevel gear 10.

[0069] First bevel gear 10: movably connected to the back of panel 8 and linked with main lock 9. When main lock 9 rotates, it drives first bevel gear 10 to rotate, transmitting mechanical motion. First bevel gear 10 and second bevel gear 12 are arranged at a 90-degree angle.

[0070] Rotating rod 11: Movably connected to the back of panel 8, featuring a damping design (achieved through bearings or a friction structure) to ensure smooth movement. Rotating rod 11 is fixed to connecting rod 13 by screws.

[0071] The second bevel gear 12 is fixedly connected to the end of the rotating rod 11 and meshes with the first bevel gear 10. It is used to convert the rotational motion of the first bevel gear 10 into the rotation of the rotating rod 11.

[0072] Link 13: Fixedly connected to the outer surface of rotating rod 11, link 13 drives the pull rod 14 to move linearly when it rotates.

[0073] Pull rod 14: It is movably connected to the top of the inner side of the connecting rod 13 and serves as a power transmission element to convert rotational motion into linear motion.

[0074] Knife switch 15: Fixedly connected to the front end of lever 14, knife switch 15 is a circuit breaker switch blade used to cut off or connect the internal circuit. When lever 14 moves, knife switch 15 moves forward or backward, controlling the circuit to open or close.

[0075] The working principle of this utility model is as follows:

[0076] Normal power supply status: When the output of the emergency generator is connected through the side opening of the housing 1, the cable is connected to the internal components (installed on the inner rail 7). The housing door 3 is closed, the main lock 9 is locked, and the edge of the housing door 3 is sealed by the magnetic pad 4. At this time, the first bevel gear 10 is in the initial position, the rotating rod 11 and the connecting rod 13 remain stationary, the switch 15 is in the "on" position, and the distribution box is powered normally. The ventilation fan 5 is working, and air flows in from the air inlet 6 (including the top and bottom), circulates inside the housing 1, and is then drawn out by the ventilation fan 5 to achieve forced heat dissipation and prevent the components from overheating.

[0077] Power-off triggering process: When technicians need to maintain or inspect the internal components of enclosure 1, they must rotate the main lock 9 to unlock it. The rotation of the main lock 9 directly drives the first bevel gear 10 to rotate. Since the first bevel gear 10 meshes with the second bevel gear 12 at a 90-degree angle, the rotation of the first bevel gear 10 drives the second bevel gear 12 to rotate synchronously, which in turn drives the rotating rod 11 to rotate. The rotating rod 11 has damping force to ensure smooth rotation without impact. When the rotating rod 11 rotates, it drives the connecting rod 13 to swing forward (facing the enclosure door 3). When the connecting rod 13 rotates, the pull rod 14 is pulled forward by it. The movement of the pull rod 14 drives the switch 15 forward, causing the switch 15 to disengage from the internal circuit connection point, realizing mechanical power-off. This process is completed before the enclosure door 3 is actually opened, ensuring that the internal circuit is in a safe disconnected state when the enclosure door 3 is unlocked.

[0078] Operation after power failure: After power failure, the cabinet door 3 can be fully opened. The magnetic pad 4 automatically snaps back to its original position when the cabinet door 3 is closed, preventing accidental unlocking and resulting partial ajar. After the technician has performed safe maintenance, the cabinet door 3 is closed and the main lock 9 is locked. The main lock 9 drives the reverse movement: the first bevel gear 10 rotates, the second bevel gear 12 and the rotating rod 11 rotate in the opposite direction, the connecting rod 13 swings back, the pull rod 14 retracts, and the switch 15 resets to the "on" position, restoring power supply.

[0079] Ventilation and Connection Process: During operation, the output of the emergency generator is connected to a cable through a side opening, and the current is distributed by components on the inner rail 7 before being output. Ventilation fan 5 continuously monitors the internal temperature, and air flows in through air inlet 6 to remove heat, ensuring normal component operation. The entire operation relies on purely mechanical linkage, requiring no external power supply, resulting in high reliability.

[0080] Electrical safety measures: A dual-channel passive dry contact sensor is embedded in the mechanical transmission system.

[0081] Sensor ① (location: end of the travel of lever 14): detects whether mechanical trip 15 has completely disengaged from the circuit connection point;

[0082] Sensor ② (Location: Main circuit breaker operating mechanism): Independently verifies the physical separation status of the main contacts;

[0083] Linkage logic: The electronic lock cylinder of the main lock 9 of the box door will only release the physical lock tongue when sensors ① and ② simultaneously output "disconnect" signals.

[0084] Power supply: Powered by the internal emergency battery pack (not the main circuit), voltage DC 24V;

[0085] Failure strategy: Any sensor failure → Locking of electromagnetic mechanism → Door opening prohibited (fault status red light alarm) Battery depletion → Mechanical lock still usable, but operator must manually verify the breakpoint observation window.

[0086] When a technician performs an unlocking operation: First isolation (active): mechanical linkage forcibly disconnects the main circuit; Second isolation (verification): the electrical circuit confirms the status of the two disconnect points in real time, forming an interlocking device that conforms to IEC 60204-1.

[0087] Compared with the prior art, the present invention has the following advantages:

[0088] This emergency low-voltage access distribution box is designed with a combination of a door 3, magnetic pad 4, panel 8, main lock 9, first bevel gear 10, rotating rod 11, second bevel gear 12, connecting rod 13, pull rod 14, and mechanical trip 15. Panel 8 has a corresponding lock seat for the main lock 9. This distribution box offers enhanced security. When the door 3 is opened for maintenance of internal components and switches, rotating the main lock 9 causes the first bevel gear 10 on panel 8 to rotate, which in turn drives the rotating rod 11 via the second bevel gear 12. The rotating rod 11 then drives the connecting rod 13 forward, which in turn pushes the pull rod 14 forward, triggering the mechanical trip 15 to release the power. Thus, before technicians open the door 3, the entire distribution box is in a mechanically de-energized state, eliminating the risk of electric shock and ensuring high safety.

[0089] A magnetic pad 4 is installed on the front of the box 1 to ensure that the box door 3 is not ajar and can be magnetically closed when the box door 3 is brought close.

Claims

1. An emergency low-voltage access distribution box, characterized in that, Includes a box body (1), a hanging ring (2), a box door (3), and a magnetic pad (4). Several hanging rings (2) are fixedly connected to the top surface of the box body (1), and a box door (3) is movably connected to the front of the box body (1). A magnetic pad (4) is installed on the front of the box body (1), and the edge of the box door (3) is attracted to the magnetic pad (4). Several ventilation fans (5) are installed on the back panel of the box (1), and air inlets (6) are provided on the top, front and back of the box (1). The box (1) is internally fixedly connected with several inner rails (7); A panel (8) is fixedly connected to the front opening inside the box (1), and two main locks (9) are installed on the box door (3). The box door (3) can only be opened when the two main locks (9) are opened. The back of the panel (8) is movably connected to a first bevel gear (10), which is linked to the main lock (9) when the door (3) is closed; A rotating rod (11) is movably connected to the back of the panel (8), and a second bevel gear (12) is fixedly connected to the end of the rotating rod (11). One side of the second bevel gear (12) is movably connected to the first bevel gear (10). A connecting rod (13) is fixedly connected to the outer surface of the rotating rod (11), and a pull rod (14) is movably connected to the top of the inner side of the connecting rod (13). A knife gate (15) is fixedly connected to the front end of the pull rod (14).

2. The emergency low-voltage access distribution box as described in claim 1, characterized in that: The lifting ring (2) is connected to the box (1) by screws, and the air inlet of the ventilation fan (5) is connected to the inside of the box (1).

3. An emergency low-voltage access distribution box as described in claim 2, characterized in that: The inner rail (7) is located in the middle of the box (1), and several positioning holes are provided on the inner rail (7).

4. An emergency low-voltage access distribution box as described in claim 3, characterized in that: The panel (8) locks the door (3) in conjunction with the main lock (9), and the first bevel gear (10) and the second bevel gear (12) are at a 90-degree angle.

5. An emergency low-voltage access distribution box as described in claim 4, characterized in that: The rotating rod (11) has a damping force, and the rotating rod (11) is connected to the connecting rod (13) by screws.

6. An emergency low-voltage access distribution box as described in claim 5, characterized in that: When the connecting rod (13) rotates, the guillotine (15) moves forward or backward.

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