A flip-up power distribution box for easy maintenance

Abstract

This invention relates to the field of distribution box technology, specifically to a flip-up power distribution box for easy maintenance. The box includes a control box with a support box at its rear. A support frame is fixedly installed inside the control box, and a support cylinder is fixedly installed on the surface of the support box. By incorporating a locking sleeve, socket, shielding plate, circuit breaker, connector, and connecting cylinder, this invention allows for the disconnection of the socket from the main power supply line before maintenance. Simultaneously, multiple shielding plates automatically close to protect the live ends of the socket. Furthermore, the circuit breaker automatically retracts after flipping, cutting off the output line connection. This allows for the simultaneous disconnection of the main circuit and output branches before the control box is flipped for maintenance. Compared to existing technologies that require manual removal of individual lines or manual power disconnection, this invention effectively reduces the risk of accidental contact with live components and improves safety and operational efficiency during maintenance.

Description

Technical Field

[0001] This invention relates to the field of distribution box technology, specifically to a flip-up power distribution box that is easy to inspect and maintain. Background Technology

[0002] Distribution boxes are important electrical equipment in power transmission and distribution systems, widely used in industrial production, construction projects, commercial facilities, and public infrastructure. They are mainly used for power distribution, line control, and electrical equipment protection. Existing distribution boxes typically contain air switches, circuit breakers, and various wiring structures, which control the power supply to external electrical equipment through different circuits. Due to the influence of current load, temperature rise, and environmental factors during long-term operation, distribution boxes are prone to problems such as poor contact, aging of lines, or local overheating of internal components and connecting lines. Therefore, regular inspection and maintenance of the distribution box is required. However, most existing distribution boxes usually adopt a fixed box structure, and maintenance can only be carried out by opening the box door. The internal wiring and components are arranged relatively densely, especially the air switches and line connection terminals located at the rear, where the maintenance space is small and the disassembly and assembly process is inconvenient.

[0003] In addition, although some existing distribution boxes are equipped with a flip-type installation structure, in actual maintenance, only the box body is flipped, and the internal main circuit and output line are not simultaneously disconnected. This means that the plug terminals and output lines may still be energized during maintenance, which may easily lead to accidental contact with energized parts during flipping or maintenance, posing a significant safety hazard. Therefore, this application proposes a flip-type power distribution box that is easy to maintain. Summary of the Invention

[0004] The purpose of this invention is to provide a flip-up power distribution box that is easy to inspect and maintain, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a flip-up power distribution box for easy maintenance, comprising an electrical box, a support box on the rear side of the electrical box, a support frame fixedly installed inside the electrical box, and multiple air switches fixedly installed on the surface of the support frame for controlling the on / off state of different branches and providing overload protection. A support cylinder is fixedly installed on the surface of the support box, and a rotating cylinder is fixedly installed on the rear surface of the electrical box. A movable tube slides through the interior of the rotating cylinder and is sleeved on the outside of the support cylinder for guiding and moving between the electrical box and the support box. A lifting frame is fixedly installed inside the support box, and a cylinder is fixedly installed on the inner side of the lifting frame by clamps. A lifting rod is fixedly connected to the output end of the cylinder, and the end of the lifting rod away from the cylinder contacts the outer surface of the movable tube. A circuit breaker is rotatably installed inside the electrical box, and the circuit breaker is located below the multiple air switches.

[0006] As a further embodiment of the present invention, a main cable is fixedly connected to the inner end of the movable tube, and one end of the main cable is electrically connected to the main air switch inside the electrical box to maintain the continuity of the power supply line during the movement and flipping of the electrical box. A socket is fixedly installed inside the support cylinder, and a plug that mates with the socket is fixedly installed inside the movable tube. By setting the mating structure between the main cable, the plug, and the socket, a stable power supply connection can be maintained during the movement and flipping of the electrical box. At the same time, the main circuit can be quickly disconnected when maintenance is required. This not only improves the stability of the line connection during the flipping of the electrical box, but also enhances the convenience and safety of power-off operation during maintenance.

[0007] As a further embodiment of the present invention, a locking toothed ring is fixedly installed at the inner end of the rotating cylinder, a limiting ring is fixedly installed on the inner side of the rotating cylinder, a support ring is slidably sleeved inside the limiting ring, the support ring is coaxially arranged and slidably connected with the rotating cylinder, and a spring ring is fixedly sleeved on the outer surface of the support ring.

[0008] As a further embodiment of the present invention, multiple limiting shafts are provided between the spring coil and the limiting ring. The multiple limiting shafts are distributed in a ring-shaped interval along the circumference of the limiting ring. When the electrical box rotates, the limiting shafts sequentially disengage from the current slot and engage with the adjacent slot along the inner side of the limiting ring during the rotation process, thereby forming an intermittent segmented rotation structure, enabling the electrical box to achieve multi-angle positioning and stopping during the flipping process.

[0009] As a further embodiment of the present invention, a shielding cylinder is fixedly installed at the inner end of the support cylinder, the shielding cylinder is sleeved on the outside of the socket, a traction ring is fixedly sleeved on the outer surface of the socket, a plurality of shielding plates are rotatably installed on the surface of the shielding cylinder, the plurality of shielding plates are distributed in a ring-shaped interval along the circumference of the shielding cylinder, a plurality of traction rods are rotatably installed on the surface of the traction ring, a movable block is rotatably installed at the end of the traction rod away from the traction ring, the movable block is slidably connected to the shielding plate at the corresponding position, and the movable block and the shielding plate are elastically connected by a passive spring.

[0010] As a further embodiment of the present invention, a plurality of connecting cylinders are slidably mounted on the surface of the circuit breaker plate. The plurality of connecting cylinders are arranged according to the number of output air switches inside the electrical box. A connecting sleeve is fixedly installed on the inner end of the connecting cylinder. A connecting head is slidably inserted inside the connecting cylinder. The connecting head and the connecting cylinder are elastically connected by a return spring. The connecting sleeve is sleeved on the outside of the connecting head.

[0011] As a further embodiment of the present invention, a top plate is slidably mounted on the surface of the circuit breaker plate, and a rectangular through hole is opened on the surface of the connecting cylinder. The top plate passes through the rectangular through hole, so that the top plate guides the movement of the connecting cylinder. A push rod is rotatably mounted on the inner end of the connecting cylinder. By setting the cooperation structure between the top plate, the rectangular through hole and the push rod, the top plate can guide and limit the movement of the connecting cylinder, and drive the push rod to move during the flipping of the circuit breaker plate, thereby realizing the linkage control of the internal connection structure of the connecting cylinder.

[0012] As a further embodiment of the present invention, a accumulator is fixedly installed inside the electrical box, and a transmission pipe is fixedly connected to the bottom end of the cylinder. The input end of the transmission pipe is connected to the output end of the accumulator, which is used to drive the inside of the accumulator during the operation of the cylinder. A movable plug is slidably installed inside the accumulator, and a movable cover is movably installed inside the accumulator.

[0013] As a further embodiment of the present invention, a storage spring is provided between the movable plug and the movable cover, a passive shaft is slidably inserted inside the movable cover, one end of the passive shaft is in contact with the surface of the circuit breaker plate, and a locking hole is provided inside the movable plug, the locking hole corresponding to the position of multiple locking plates.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. This invention, by setting up structures such as an unlocking sleeve, socket, shielding plate, circuit breaker, connector, and connecting cylinder, can disconnect the connection between the socket and the main power supply line before maintenance, and simultaneously cause multiple shielding plates to automatically close to shield and protect the live end of the socket. At the same time, after the circuit breaker is flipped, the connector can automatically retract to cut off the output line connection. Thus, the main circuit and output branch can be simultaneously disconnected before the electrical box is flipped for maintenance. Compared with the existing technology that requires manual removal of lines one by one or manual power disconnection, it can effectively reduce the risk of accidental contact with live parts and improve the safety and operation efficiency during maintenance.

[0016] 2. This invention, by setting up structures such as a movable tube, lifting frame, cylinder, accumulator, and transmission tube, allows the pressure accumulated inside the accumulator to be transmitted to the cylinder through the transmission tube after the circuit is disconnected, and pushes the lifting rod to move the movable tube, thereby assisting the electrical box to flip and unfold outward. Compared with the existing technology that requires manual forcible flipping of the electrical box or disassembly of the mounting plate, this invention can reduce the flipping resistance and improve the convenience of electrical box maintenance.

[0017] 3. By setting up structures such as limit rings, limit shafts, spring rings, and locking toothed rings, the present invention enables the electrical box to rotate intermittently in segments during the flipping process and achieve stable stopping at different flipping angles. At the same time, after the electrical box is reset, the two locking toothed rings can clamp and lock the limit shaft, thereby preventing the electrical box from shaking or rotating unexpectedly when not under maintenance. Compared with the poor stability of ordinary hinged distribution boxes in the prior art, this invention can improve the structural stability and safety of use during the flipping maintenance process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the electrical box structure;

[0019] Figure 2 This is a schematic diagram of the internal structure of the electrical box;

[0020] Figure 3 This is a schematic diagram of the internal structure of the support box;

[0021] Figure 4 This is a schematic diagram of the internal structure of the support cylinder;

[0022] Figure 5 This is a schematic diagram of the internal structure of the rotating cylinder and the movable tube;

[0023] Figure 6 This is a structural diagram showing the disassembly of the spring coil and the limiting shaft.

[0024] Figure 7 This is a schematic diagram of the internal structure of the support cylinder;

[0025] Figure 8 This is a structural diagram of the shielding cylinder and the socket;

[0026] Figure 9 This is a schematic diagram of the internal structure of the shielding cylinder;

[0027] Figure 10 This is a structural schematic diagram of the cross-section of the circuit breaker slab;

[0028] Figure 11 This is a schematic diagram of the internal structure of the connecting cylinder;

[0029] Figure 12 This is a schematic diagram of the internal structure of the accumulator cylinder;

[0030] Figure 13 This is a schematic diagram of the internal structure of the movable cover.

[0031] In the diagram: 1. Electrical box; 2. Support box; 3. Support frame; 4. Circuit breaker.

[0032] 101. Lifting frame; 102. Cylinder; 103. Support cylinder; 104. Rotating cylinder; 105. Transmission pipe; 106. Lifting rod; 107. Main cable; 108. Locking toothed ring; 109. Limiting ring; 110. Auxiliary spring; 111. Supporting ring; 112. Spring coil; 113. Limiting shaft; 114. Movable tube;

[0033] 201. Accumulator cylinder; 202. Movable cover; 203. Movable plug; 204. Driven shaft; 205. Clamping plate; 206. Accumulation spring;

[0034] 301. Unlocking sleeve; 302. Shielding cylinder; 303. Socket; 304. Shielding plate; 305. Traction ring; 306. Movable block; 307. Passive spring; 308. Traction rod;

[0035] 401. Top block; 402. Top plate; 403. Connecting cylinder; 404. Push rod; 405. Connecting sleeve; 406. Connecting head; 407. Return spring. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] Example 1: Please refer to Figures 1-4 A flip-up power distribution box for easy maintenance includes a box 1, a support box 2 at the rear of the box 1, a support frame 3 fixedly installed inside the box 1, and multiple air switches fixedly installed on the surface of the support frame 3 for controlling the on / off state of different branches and providing overload protection. A support cylinder 103 is fixedly installed on the surface of the support box 2, and a rotating cylinder 104 is fixedly installed on the rear surface of the box 1. A movable tube 114 slides through the interior of the rotating cylinder 104 and is sleeved on the outside of the support cylinder 103 to facilitate the operation of the power distribution box. The guide movement connection between the support box 1 and the support box 2 is as follows: Specifically, the support box 2 is fixedly installed with a lifting frame 101, and the rotating cylinder 104 is movably connected to the lifting frame 101. Specifically, the surface of the lifting frame 101 is provided with an "L"-shaped sliding groove, and the outer surface of the movable tube 114 is fixedly installed with a protrusion that matches the sliding groove. The protrusion is slidably embedded in the sliding groove to limit and guide the movement trajectory of the movable tube 114, and to achieve flipping and positioning after the electrical box 1 moves to the predetermined position, so as to improve the stability during the maintenance process.

[0038] A cylinder 102 is fixedly installed on the inner side of the lifting frame 101 by a clamp. A lifting rod 106 is fixedly connected to the output end of the cylinder 102. The end of the lifting rod 106 away from the cylinder 102 contacts the outer surface of the movable tube 114. When the cylinder 102 works, the lifting rod 106 pushes the movable tube 114 to move along the axial direction of the support cylinder 103, thereby driving the electrical box 1 to move away from the support box 2, so that a maintenance distance is formed between the electrical box 1 and the support box 2, so as to facilitate the maintenance and repair of the internal components of the electrical box 1.

[0039] Among them, after the movable tube 114 is separated from the support cylinder 103, the movable tube 114 can be flipped under the cooperation of the protrusion and the "L"-shaped sliding groove, so that the electrical box 1 tilts and unfolds outward, thereby increasing the exposed area of ​​the internal components of the electrical box 1, making it easier for maintenance personnel to observe and maintain the air switch and circuit located on the rear side of the electrical box 1, while avoiding the bottom of the electrical box 1 from touching the ground when rotating.

[0040] The inner end of the movable tube 114 is fixedly connected to the main cable 107. One end of the main cable 107 is electrically connected to the main air switch inside the electrical box 1 to maintain the continuity of the power supply line during the movement and flipping of the electrical box 1. The support cylinder 103 is fixedly installed with a socket 303. The movable tube 114 is fixedly installed with a plug that mates with the socket 303. When the electrical box 1 moves, the plug is simultaneously disengaged from the socket 303 inside the support cylinder 103 along with the movable tube 114, thus physically disconnecting the main power supply.

[0041] The circuit breaker 4 is located on the power input side of multiple air switches and corresponds to the incoming terminal (or branch output terminal of the main busbar) of the corresponding air switch and the output terminal of the corresponding air switch. It is used to separate and support the internal wiring when the electrical box 1 is flipped for maintenance, and to improve the neatness of the internal wiring layout, so as to facilitate maintenance personnel to inspect and maintain the wiring.

[0042] like Figures 3-6 As shown, a locking toothed ring 108 is fixedly installed at the inner end of the rotating cylinder 104, and a limiting ring 109 is fixedly installed on the inner side of the rotating cylinder 104. A support ring 111 is slidably sleeved inside the limiting ring 109. The support ring 111 is coaxially arranged and slidably connected with the rotating cylinder 104. A spring ring 112 is fixedly sleeved on the outer surface of the support ring 111. Multiple limiting shafts 113 are provided between the spring ring 112 and the limiting ring 109. The multiple limiting shafts 113 are distributed in a ring-shaped interval along the circumference of the limiting ring 109.

[0043] The spring coil 112 has a wave-shaped structure, and multiple limiting shafts 113 are respectively set at the corresponding trough positions of the spring coil 112. They are used to continuously apply radial support force to the limiting shafts 113 through the elastic deformation of the spring coil 112. Multiple slots are provided on the inner side of the limiting ring 109, which are distributed circumferentially. The limiting shafts 113 are respectively engaged with the corresponding slots, so that the limiting shafts 113 are always embedded in the slots under the elastic force of the spring coil 112.

[0044] When the electrical box 1 rotates, the limiting shaft 113 sequentially disengages from the current slot and engages in the adjacent slot along the inner side of the limiting ring 109 during the rotation process, thereby forming an intermittent segmented rotation structure. This allows the electrical box 1 to achieve multi-angle positioning and stopping during the flipping process, avoiding the free rotation of the electrical box 1 and affecting the stability of maintenance, thus improving the operational safety and ease of use during maintenance.

[0045] Example 2: Please refer to Figures 4-6 As shown, a flip-up power distribution box for easy maintenance is based on embodiment 1. Locking toothed rings 108 are provided on both the left and right sides of the support ring 111. The two locking toothed rings 108 are respectively arranged corresponding to the limiting shaft 113. When the two locking toothed rings 108 approach each other, they form a clamping limit on the limiting shaft 113, which is used to lock the rotation state of the support ring 111.

[0046] Because the movable tube 114 is restricted by the lifting frame 101, the movable tube 114 cannot rotate circumferentially. Therefore, the rotating cylinder 104, which is fixedly connected to the movable tube 114, is also restricted in rotation. When the locking toothed ring 108 clamps the limiting shaft 113, the limiting shaft 113 cannot continue to move along the inner side of the limiting ring 109, thereby forming a locked state between the support ring 111 and the rotating cylinder 104.

[0047] An auxiliary spring 110 is provided between the locking tooth ring 108 located on the side away from the rotating cylinder 104 and the support cylinder 103. When the movable tube 114 moves toward the support cylinder 103 and gradually resets, the auxiliary spring 110 is squeezed and elastically compressed. Then the auxiliary spring 110 releases the elastic restoring force, pushing the corresponding locking tooth ring 108 to move toward another locking tooth ring 108, so that the two locking tooth rings 108 together clamp and limit the limiting shaft 113.

[0048] Under the clamping action of the two locking toothed rings 108, the limiting shaft 113 is restricted to its current position and cannot continue to switch the position of the slot inside the limiting ring 109, thereby putting the rotating cylinder 104 in a locked state, thus realizing the automatic locking of the electrical box 1 in the closed state, improving the stability of the electrical box 1 during transportation and daily use.

[0049] like Figures 7-9As shown, a shielding cylinder 302 is fixedly installed on the inner end of the support cylinder 103. The shielding cylinder 302 is sleeved on the outside of the socket 303 to protect the socket 303. An unlocking sleeve 301 is rotatably installed on the outer surface of the support cylinder 103. A threaded groove is opened on the outer surface of the socket 303. The unlocking sleeve 301 is threadedly connected to the socket 303. By rotating the unlocking sleeve 301, the socket 303 can be driven to move along the axial direction of the support cylinder 103 to realize the insertion or disengagement of the socket 303.

[0050] A traction ring 305 is fixedly sleeved on the outer surface of the socket 303. Multiple shielding plates 304 are rotatably mounted on the surface of the shielding cylinder 302. The multiple shielding plates 304 are distributed in a ring-shaped interval along the circumference of the shielding cylinder 302. Multiple traction rods 308 are rotatably mounted on the surface of the traction ring 305. A movable block 306 is rotatably mounted on the end of the traction rod 308 away from the traction ring 305. The movable block 306 is slidably connected to the shielding plate 304 at the corresponding position, and the movable block 306 and the shielding plate 304 are elastically connected by a passive spring 307.

[0051] Specifically, multiple shielding plates 304 arranged in a ring are fitted together to form a ring shielding structure, and rubber rings are fitted at the edges of the shielding plates 304 to improve the sealing and buffering performance after the multiple shielding plates 304 are closed. When the socket 303 moves away from the shielding cylinder 302, the traction ring 305 moves synchronously and drives the movable block 306 to move through the traction rod 308. The movable block 306 pushes the shielding plate 304 at the corresponding position to rotate around its rotation axis.

[0052] As multiple shielding plates 304 rotate synchronously, they gradually close towards the center, thereby shielding and protecting the plug-in end of the socket 303. This prevents the live terminals of the socket 303 from being exposed to the external environment after it is disconnected from the power supply, reducing the risk of electric shock caused by personnel accidentally touching high-voltage interfaces during maintenance and improving the safety of the electrical box 1 during overturning maintenance.

[0053] Meanwhile, under the elastic action of the passive spring 307, the movable block 306 can always maintain a stable fit with the shielding plate 304, making the multiple shielding plates 304 more stable during opening and closing, and avoiding jamming.

[0054] like Figure 2 , Figures 10-11 As shown, multiple connecting cylinders 403 are slidably mounted on the surface of the circuit breaker 4. The multiple connecting cylinders 403 are set according to the number of output air switches inside the electrical box 1, and are used to make electrical connections with each output circuit respectively. A connecting sleeve 405 is fixedly installed on the inner end of the connecting cylinder 403. A connecting head 406 is slidably passed through the inside of the connecting cylinder 403. The connecting head 406 and the connecting cylinder 403 are elastically connected by a return spring 407. The connecting sleeve 405 is sleeved on the outside of the connecting head 406.

[0055] Specifically, the end of the connecting sleeve 405 away from the connector 406 is provided with a terminal block for connecting to the cable of external electrical equipment. Under the elastic action of the return spring 407, the connector 406 can axially extend and retract inside the connecting cylinder 403 to adapt to the position change caused by the flipping of the circuit breaker 4, improve the stability of the line connection, and prevent the wire from becoming loose due to pulling.

[0056] A top plate 402 is slidably mounted on the surface of the circuit breaker plate 4. A rectangular through hole is opened on the surface of the connecting cylinder 403. The top plate 402 passes through the rectangular through hole, so that the top plate 402 guides the movement of the connecting cylinder 403. A push rod 404 is rotatably mounted on the inner end of the connecting cylinder 403. The push rod 404 has a "V" shaped structure. The upper end of the top plate 402 contacts one side of the push rod 404.

[0057] Among them, a limiting block is fixedly installed on the outer surface of the connector 406. The limiting block is located inside the connecting cylinder 403, and the other side of the push rod 404 corresponds to the limiting block. When the top plate 402 moves upward, the top plate 402 pushes the push rod 404 to rotate around the connecting cylinder 403 and the connection point swings, so that the other side of the push rod 404 presses against the limiting block, thereby pushing the connector 406 to move along the inside of the connecting cylinder 403, so as to realize the rapid contact and conduction between the connector 406 and the corresponding line end.

[0058] A top block 401 is fixedly installed inside the electrical box 1. The top block 401 is positioned corresponding to the top plate 402. When the circuit breaker 4 is in a vertical working state, the top block 401 presses against the top plate 402, causing the top plate 402 to move upward and drive the push rod 404 to move, thereby putting the connector 406 into a conductive connection state.

[0059] Conversely, when the circuit breaker 4 flips over and is in a non-vertical maintenance state, the top plate 402 is released from the pressing action of the top block 401, and the top plate 402 resets under its own weight and the action of the reset structure. The push rod 404 releases the push on the limit block. At this time, the connector 406 retracts under the action of the reset spring 407, causing the corresponding output line to disconnect.

[0060] like Figure 3 , Figure 4 , Figure 12 , Figure 13 As shown, an accumulator 201 is fixedly installed inside the electrical box 1. A transmission pipe 105 is fixedly connected to the bottom end of the cylinder 102. The input end of the transmission pipe 105 is connected to the output end of the accumulator 201, which is used to drive the internal parts of the accumulator 201 during the operation of the cylinder 102. A movable plug 203 is slidably installed inside the accumulator 201. A movable cover 202 is movably installed inside the accumulator 201. An accumulator spring 206 is provided between the movable plug 203 and the movable cover 202.

[0061] The movable cover 202 can move freely along the axial direction inside the accumulator 201, and the outer peripheral surface of the movable cover 202 is tightly fitted with the inner wall of the accumulator 201 to improve the sealing of the inside of the accumulator 201. Multiple clamping plates 205 are rotatably installed on the side of the movable cover 202 near the movable plug 203, and the multiple clamping plates 205 are distributed in a ring-shaped interval along the circumference of the movable cover 202.

[0062] A passive shaft 204 is slidably inserted inside the movable cover 202. One end of the passive shaft 204 is in contact with the surface of the circuit breaker plate 4. During the previous operation of closing and resetting the electrical box 1, the electrical box 1 presses the passive shaft 204 through the circuit breaker plate 4, drives the movable plug 203 to move toward the movable cover 202 and compresses the energy storage spring 206, so that it is in a pre-tensioned / pre-compressed energy storage state.

[0063] The movable plug 203 has a locking hole inside, which corresponds to the position of multiple locking plates 205. When the circuit breaker 4 is in the vertical working state, the circuit breaker 4 pushes the passive shaft 204 to move along the inside of the movable cover 202. During the movement, the passive shaft 204 pushes the multiple locking plates 205 to open outward. It is worth noting that the passive shaft 204 and the movable cover 202 are connected by a spring piece.

[0064] As multiple locking plates 205 expand outward, the outer ends of multiple locking plates 205 engage with the locking holes inside the movable plug 203, thereby forming a locking state between the movable cover 202 and the movable plug 203, and limiting the position of the passive shaft 204 to keep the energy storage spring 206 in a compressed energy storage state. In the default state, the movable plug 203 is locked by the locking plates 205.

[0065] When the circuit breaker plate 4 flips away from the vertical position, the passive shaft 204 loses the continuous pressing action of the circuit breaker plate 4, the multiple locking plates 205 release the locking restriction on the locking hole, and the movable cover 202 resets under the elastic recovery action of the storage spring 206, thereby releasing the stored elastic potential energy to assist the relevant structure in automatic reset and improve the linkage stability of the electrical box 1 during the flipping and closing process.

[0066] It is worth noting that a sealed pressure accumulator is formed between the movable plug 203 and the movable cover 202. As the movable plug 203 moves toward the movable cover 202, the pressure inside the pressure accumulator gradually increases. Combined with the elastic energy storage of the storage spring 206, it forms a continuous output force. When the locking state is released, the pressure inside the pressure accumulator is released, which can drive the transmission tube 105 and the cylinder 102 to move, thereby driving the entire electrical box 1 to move upward. This assists the electrical box 1 in opening or flipping and resetting, reduces the operating resistance during the flipping process of the electrical box 1, and improves the convenience of maintenance operations.

[0067] The working principle of this invention is:

[0068] Before maintenance, first rotate the unlocking sleeve 301. During the rotation, the unlocking sleeve 301 engages with the threaded groove on the surface of the socket 303, causing the socket 303 to move away from the shielding cylinder 302 along the axial direction of the support cylinder 103. During the movement of the socket 303, the traction ring 305 is displaced synchronously and drives the movable block 306 to move through the traction rod 308. The movable block 306 further pushes the shielding plate 304 at the corresponding position to rotate around its rotational connection.

[0069] As multiple shielding plates 304 rotate synchronously, they gradually close towards the center, thereby shielding and protecting the plug-in end of the socket 303. This prevents the live terminals of the socket 303 from being exposed to the external environment after it is disconnected from the power supply, reducing the risk of electric shock caused by personnel accidentally touching high-voltage interfaces during maintenance and improving the safety of the electrical box 1 during overturning maintenance.

[0070] Then rotate the circuit breaker plate 4 to disconnect the connector 406 from the output terminal of the corresponding air switch. During the flipping process of the circuit breaker plate 4, the top plate 402 is released from the pressing action of the top block 401. Under its own gravity and the action of the reset structure, the top plate 402 resets downward. The push rod 404 releases the push on the limit block, thereby automatically disconnecting the input power of each branch air switch to avoid the air switch and internal components from being continuously electrified during the flipping maintenance of the electrical box 1, thus ensuring maintenance safety.

[0071] Afterwards, the circuit breaker plate 4 is manually rotated, and the passive shaft 204 immediately loses its top pressure. Multiple locking plates 205 automatically disengage from the locking holes under the action of elasticity. The energy storage spring 206 instantly releases the pre-stored energy and pushes the movable plug 203 to move, compressing and pressurizing the internal chamber of the energy storage cylinder 201. The high-pressure gas is instantly injected into the cylinder 102 through the transmission pipe 105. The cylinder 102 actively drives the lifting rod 106 to push the electrical box 1 outward as a whole, and compresses and pressurizes the internal chamber of the energy storage cylinder 201 during the movement.

[0072] The pressure generated inside the accumulator 201 is transmitted to the cylinder 102 through the transmission pipe 105. After the pressure inside the cylinder 102 increases, it pushes the lifting rod 106 to extend. The lifting rod 106 pushes the movable pipe 114 to move upward, thereby assisting the electrical box 1 to flip and unfold outward, so as to reduce the resistance of manual flipping and improve the convenience of maintenance.

[0073] During the flipping process of the electrical box 1, the limiting shaft 113 sequentially disengages from the current slot and engages in the adjacent slot along the inner side of the limiting ring 109, thereby forming an intermittent segmented rotation structure. This allows the electrical box 1 to achieve multi-angle positioning and stopping during the flipping process, preventing the electrical box 1 from swinging freely and improving the stability and operational safety during maintenance.

[0074] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A flip-up power distribution box for easy maintenance, comprising a power box (1), characterized in that: The electrical box (1) has a support box (2) on its rear side. A support frame (3) is fixedly installed inside the electrical box (1). Multiple air switches are fixedly installed on the surface of the support frame (3) for controlling the on / off state of different branches and providing overload protection. A support cylinder (103) is fixedly installed on the surface of the support box (2). A rotating cylinder (104) is fixedly installed on the rear surface of the electrical box (1). A movable tube (114) slides through the interior of the rotating cylinder (104). The movable tube (114) is sleeved on the outside of the support cylinder (103) for... To achieve a guide movement connection between the electrical box (1) and the support box (2), a lifting frame (101) is fixedly installed inside the support box (2). A cylinder (102) is fixedly installed on the inner side of the lifting frame (101) by a clamp. A lifting rod (106) is fixedly connected to the output end of the cylinder (102). The end of the lifting rod (106) away from the cylinder (102) contacts the outer surface of the movable tube (114). A circuit breaker plate (4) is rotatably installed inside the electrical box (1). The circuit breaker plate (4) is located below multiple air switches. The surface of the lifting frame (101) is provided with an "L"-shaped sliding groove. The outer surface of the movable tube (114) is fixedly installed with a protrusion that matches the sliding groove. The protrusion is slidably embedded in the sliding groove to limit and guide the movement trajectory of the movable tube (114) and to achieve flipping positioning after the electrical box (1) moves to the predetermined position.

2. The flip-up power distribution box for easy maintenance according to claim 1, characterized in that: The inner end of the movable tube (114) is fixedly connected to the main cable (107). One end of the main cable (107) is electrically connected to the main air switch inside the electrical box (1) to maintain the continuity of the power supply line during the movement and flipping of the electrical box (1). The support cylinder (103) is fixedly installed with a socket (303), and the movable tube (114) is fixedly installed with a plug that matches the socket (303).

3. The flip-up power distribution box for easy maintenance according to claim 2, characterized in that: A locking toothed ring (108) is fixedly installed at the inner end of the rotating cylinder (104), and a limiting ring (109) is fixedly installed on the inner side of the rotating cylinder (104). A support ring (111) is slidably sleeved inside the limiting ring (109). The support ring (111) is coaxially arranged with the rotating cylinder (104) and slidably connected. A spring ring (112) is fixedly sleeved on the outer surface of the support ring (111).

4. A flip-up power distribution box for easy maintenance according to claim 3, characterized in that: Multiple limiting shafts (113) are provided between the spring coil (112) and the limiting ring (109). The multiple limiting shafts (113) are distributed in a ring-shaped interval along the circumference of the limiting ring (109). When the electrical box (1) rotates, the limiting shafts (113) sequentially disengage from the current slot and enter the adjacent slot along the inner side of the limiting ring (109) during the rotation process, thereby forming an intermittent segmented rotation structure, so that the electrical box (1) can achieve multi-angle positioning and stopping during the flipping process.

5. A flip-up power distribution box for easy maintenance according to claim 4, characterized in that: A shielding cylinder (302) is fixedly installed at the inner end of the support cylinder (103). The shielding cylinder (302) is sleeved on the outside of the socket (303). A traction ring (305) is fixedly sleeved on the outer surface of the socket (303). Multiple shielding plates (304) are rotatably installed on the surface of the shielding cylinder (302). The multiple shielding plates (304) are distributed in a ring-shaped interval along the circumference of the shielding cylinder (302). Multiple traction rods (308) are rotatably installed on the surface of the traction ring (305). A movable block (306) is rotatably installed at the end of the traction rod (308) away from the traction ring (305). The movable block (306) is slidably connected to the shielding plate (304) at the corresponding position. The movable block (306) and the shielding plate (304) are elastically connected by a passive spring (307).

6. A flip-up power distribution box for easy maintenance according to claim 2, characterized in that: Multiple connecting cylinders (403) are slidably installed on the surface of the circuit breaker (4). The multiple connecting cylinders (403) are set according to the number of air switches output inside the electrical box (1). A connecting sleeve (405) is fixedly installed on the inner end of the connecting cylinder (403). A connecting head (406) is slidably inserted inside the connecting cylinder (403). The connecting head (406) and the connecting cylinder (403) are elastically connected by a return spring (407). The connecting sleeve (405) is sleeved on the outside of the connecting head (406).

7. A flip-up power distribution box for easy maintenance according to claim 6, characterized in that: A top plate (402) is slidably mounted on the surface of the circuit breaker (4), and a rectangular through hole is opened on the surface of the connecting cylinder (403). The top plate (402) passes through the rectangular through hole, so that the top plate (402) guides the movement of the connecting cylinder (403). A push rod (404) is rotatably mounted on the inner end of the connecting cylinder (403).

8. A flip-up power distribution box for easy maintenance according to claim 1, characterized in that: An accumulator (201) is fixedly installed inside the electrical box (1). A transmission pipe (105) is fixedly connected to the bottom end of the cylinder (102). The input end of the transmission pipe (105) is connected to the output end of the accumulator (201) and is used to drive the accumulator (201) during the operation of the cylinder (102). A movable plug (203) is slidably installed inside the accumulator (201), and a movable cover (202) is movably installed inside the accumulator (201).

9. A flip-up power distribution box for easy maintenance according to claim 8, characterized in that: A storage spring (206) is provided between the movable plug (203) and the movable cover (202). A passive shaft (204) is slidably passed through the interior of the movable cover (202). One end of the passive shaft (204) is in contact with the surface of the circuit breaker (4). A locking hole is provided inside the movable plug (203), and the locking hole corresponds to the position of multiple locking plates (205).

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