A power access box structure with a gravity reset type bottom turnover door

Abstract

The present application relates to the technical field of metallurgical equipment, and especially relates to a power maintenance box structure with a gravity reset type bottom turnover door, which comprises a maintenance box body, the lower surface of the maintenance box body is fixedly connected with a frame, the left and right sides of the frame are fixedly provided with side sealing plates, the back of the frame is fixedly connected with a back baffle, the bottom of the frame is fixedly connected with a bottom plate, and the inside of the frame is provided with a turnover door mechanism and a cable positioning mechanism; the turnover door mechanism is arranged at the bottom of the maintenance box, the turnover door plate is opened upward, the effect of opening the door and forcibly cutting off the power is realized, the rotating shaft is driven to rotate when the turnover door plate is turned upward and opened, the driving gear, the driven gear and the transmission cross bar are further rotated, the first linkage cam lifts the T-shaped trigger block, the press switch is triggered, the main circuit in the box is forcibly cut off, the risk of electrified wiring and misoperation is eliminated, and the power supply and distribution safety hazard is completely eliminated.

Description

Technical Field

[0001] This invention relates to the field of metallurgical equipment technology, and in particular to a power maintenance box structure with a gravity-reset bottom tilting door. Background Technology

[0002] In the metallurgical industry, power maintenance boxes are crucial equipment for ensuring temporary power supply during furnace operations and industrial site work. Traditional maintenance boxes generally have a closed structure at the bottom, lacking a dedicated cable outlet, which prevents cables from being smoothly routed out from the bottom during temporary wiring.

[0003] In actual use, temporary power cords can only be threaded through the gaps in the cabinet door, forcing the door to remain open for extended periods. This results in exposed live parts, making it easy for external dust, moisture, and debris to enter, posing safety hazards such as electric shock and short circuits. Furthermore, traditional maintenance boxes rely on manual power disconnection during wiring operations, which can easily lead to dangerous actions such as connecting wires while they are still live or accidentally reconnecting the circuit breaker, compromising safety.

[0004] To address this, we propose a power maintenance box structure with a gravity-reset bottom flip door. Summary of the Invention

[0005] The purpose of this invention is to solve at least one technical problem mentioned in the background art.

[0006] This invention provides a power maintenance box structure with a gravity-reset bottom flip door, including a maintenance box body, a frame fixedly connected to the lower surface of the maintenance box body, side sealing plates fixedly provided on the left and right sides of the frame, a rear baffle fixedly connected to the back of the frame, a bottom plate fixedly connected to the bottom of the frame, and a flip door mechanism and a cable positioning mechanism provided inside the frame.

[0007] The flip-top door mechanism includes a flip-top door panel rotatably mounted on the front of the frame, a transmission crossbar rotatably mounted on the inner side of the frame, a driven gear fixedly connected to the surface of the transmission crossbar, a linkage shaft rotatably connected between the back of the frame and the rear baffle, a worm gear fixedly connected to the surface of the linkage shaft, and worms fixedly connected to both ends of the transmission crossbar, the positions of the worms corresponding to the worm gears, and the worms meshing with the worm gears.

[0008] Preferably, the frame has a through hole on its front side, and two pairs of rotating seats are fixedly connected to the front side of the frame. A rotating shaft is rotatably connected between the two rotating seats in each pair. A connecting block is fixedly connected to the surface of the rotating shaft, and the end of the connecting block away from the rotating shaft is fixedly connected to the surface of the flip door panel.

[0009] Preferably, one end of the rotating shaft extends to the outside of the rotating seat and is fixedly connected to a drive gear. The position of the drive gear corresponds to the through hole, the position of the driven gear corresponds to the through hole, and a portion of the teeth of the driven gear extends to the outside of the frame through the through hole. The drive gear meshes with the driven gear.

[0010] Preferably, a power-off module is fixedly provided on the back of the frame. The power-off module includes a limiting fixing seat fixed at the middle position on the back of the frame. A limiting groove is formed on the lower surface of the limiting fixing seat. A push switch is fixedly connected to the inner top wall of the limiting groove, and a T-shaped trigger block is slidably connected to the inner wall of the limiting groove. The T-shaped trigger block is located directly below the push switch.

[0011] Preferably, a first linkage cam is fixedly connected to the surface of the transmission crossbar. The position of the first linkage cam corresponds to the power-off module, and the first linkage cam is located directly below the T-shaped trigger block. The lower surface of the T-shaped trigger block overlaps with the first linkage cam, and a return spring is fixedly connected to the upper surface of the T-shaped trigger block. The top end of the return spring is fixedly connected to the inner top wall of the limiting groove.

[0012] Preferably, the cable positioning mechanism includes a cable fixing seat fixedly connected to the upper surface of the base plate. The cable fixing seat is elongated and horizontally distributed inside the frame. The upper surface of the cable fixing seat has several cable positioning grooves. Triangular support blocks are fixedly connected to both the left and right ends of the cable fixing seat. Guide posts are fixedly connected to the upper surface of the triangular support blocks. Movable blocks are slidably fitted on the surface of the guide posts. Cable pressing blocks are fixedly connected between two movable blocks.

[0013] Preferably, the cable positioning groove is semi-circular, and the inner wall of the cable positioning groove is fixedly connected with an anti-slip coating. Several cable positioning grooves are evenly arranged in a linear array on the surface of the cable fixing seat. Several anti-slip rubber pads are fixedly connected to the lower surface of the cable pressing block. Several anti-slip rubber pads are evenly distributed in a linear array on the surface of the cable pressing block, and the positions of the anti-slip rubber pads correspond to the cable positioning grooves.

[0014] Preferably, an extension bracket is fixedly connected to the upper surface of the movable block, a lifting push plate is fixedly connected to the top of the extension bracket, a second linkage cam is fixedly connected to the surface of the linkage shaft, the position of the second linkage cam corresponds to the lifting push plate, and the second linkage cam overlaps with the upper surface of the lifting push plate. A compression spring is sleeved on the surface of the guide column, the top of the compression spring is fixedly connected to the lower surface of the movable block, and the bottom of the compression spring is fixedly connected to the upper surface of the triangular support block.

[0015] Preferably, the base plate has a strip-shaped mounting groove on its front side, and a strong magnetic positioning block is fixedly embedded in the inner wall of the strip-shaped mounting groove. A strip steel sheet is fixedly connected to the surface of the flip-up door panel, and the position of the strip steel sheet corresponds to the strong magnetic positioning block. The strong magnetic positioning block is used to adsorb and limit the flip-up door panel.

[0016] Preferably, the surface of the rear baffle is provided with a plurality of wire-passing holes, which are evenly distributed in a horizontal array on the surface of the rear baffle, and each wire-passing hole corresponds to the position of the cable positioning groove.

[0017] In summary, the present invention has at least one of the following beneficial technical effects:

[0018] 1. The present invention discloses a power maintenance box structure with a gravity-reset bottom flip door. By setting a flip door mechanism at the bottom of the maintenance box, the flip door panel is opened upwards, achieving the effect of forced power cut-off upon opening the door. When the flip door panel flips upwards, it drives the rotating shaft to rotate, which in turn drives the drive gear, driven gear, and transmission crossbar to rotate. This causes the first linkage cam to lift the T-shaped trigger block, triggering the push switch and achieving forced power cut-off of the main circuit inside the box. This eliminates the risk of electric shock from live wiring or accidental closing of the circuit and completely eliminates potential safety hazards in power supply and distribution.

[0019] 2. The power maintenance box structure with a gravity-reset bottom flip door described in this invention, by setting a cable positioning mechanism, can be synchronously linked when the flip door is opened and closed. The transmission crossbar drives the second linkage cam to move synchronously, driving the lifting push plate and the extension bracket to lift the cable pressure block upward. The cable positioning groove automatically opens, providing smooth space for temporary cables to be threaded. When the flip door closes and resets under the action of gravity, the second linkage cam returns to its original position, and the cable pressure block automatically falls and presses the cable under the action of the compression spring, realizing reliable cable positioning and anti-slip. At the same time, the flip door closes the bottom opening, restoring the box to a fully enclosed protective state. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a top view of the internal structure of the frame of the present invention;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is a schematic diagram of the side cross-section of the frame structure of the present invention;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point B;

[0025] Figure 6 This is a side view of the cable positioning mechanism of the present invention.

[0026] Figure 7 for Figure 6 Enlarged structural diagram at point C;

[0027] Figure 8 This is a front view structural schematic diagram of the cable positioning mechanism of the present invention.

[0028] Explanation of reference numerals in the attached figures:

[0029] 1. Inspection box; 2. Frame; 3. Flip-top door mechanism; 4. Cable positioning mechanism; 5. Power-off module;

[0030] 201. Side sealing plate; 202. Rear baffle; 203. Base plate; 204. Strong magnetic positioning block; 205. Wire hole; 206. Through hole;

[0031] 301. Flip-up door panel; 302. Transmission crossbar; 303. Driven gear; 304. Linkage shaft; 305. Worm gear; 306. Worm; 307. Rotating seat; 308. Rotating shaft; 309. Connecting block; 310. Drive gear;

[0032] 401. Cable fixing seat; 402. Cable positioning groove; 403. Guide column; 404. Movable block; 405. Cable clamping block; 406. Anti-slip rubber pad; 407. Extension bracket; 408. Lifting push plate; 409. Second linkage cam; 410. Compression spring;

[0033] 501. Limiting and fixing seat; 502. Limiting groove; 503. Press switch; 504. T-shaped trigger block; 505. First linkage cam; 506. Reset spring. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1 To be continued Figure 8 The present invention will be further described in detail below.

[0035] A power maintenance box structure with a gravity-reset bottom flip door includes a maintenance box body 1, a frame 2 fixedly connected to the lower surface of the maintenance box body 1, side sealing plates 201 fixedly installed on the left and right sides of the frame 2, a rear baffle 202 fixedly connected to the back of the frame 2, a bottom plate 203 fixedly connected to the bottom of the frame 2, and a flip door mechanism 3 and a cable positioning mechanism 4 installed inside the frame 2.

[0036] like Figure 1 , Figure 2 , Figure 4As shown, the maintenance enclosure 1 is an integrally enclosed structure. A frame 2 is fixedly connected to the lower surface of the maintenance enclosure 1. The frame 2 is made of welded metal profiles and has an overall rectangular frame structure, forming a closed protective space. Several cable-passing holes 205 are opened on the surface of the rear baffle 202. The cable-passing holes 205 are evenly distributed in a horizontal array. The cable-passing holes 205 are used to allow temporary cables to pass through the inside of the maintenance enclosure 1 into the inside of the frame 2, so that the cables can be led out in an orderly manner and avoid messy crossing of cables. A bottom plate 203 is fixedly connected to the bottom of the frame 2. The bottom plate 203 is sealed and fixed to the lower edge of the frame 2, forming a bottom cavity that is closed on three sides and open on the front, together with the side sealing plate 201 and the rear baffle 202.

[0037] The front of the base plate 203 has a strip-shaped mounting groove, and a strong magnetic positioning block 204 is fixedly embedded in the inner wall of the strip-shaped mounting groove. The strong magnetic positioning block 204 is made of permanent magnet material and can provide stable adsorption force. It is used for positioning and locking when the flip door panel 301 is closed, preventing the flip door panel 301 from being opened accidentally due to vibration and improving the sealing stability.

[0038] The flip-door mechanism 3 is used to open and close the bottom opening and automatically reset it by gravity, and at the same time realizes power-off control through mechanical linkage; the cable positioning mechanism 4 is used to realize the orderly arrangement, clamping and fixing and loosening of temporary cables, and moves synchronously with the flip-door mechanism 3 to realize dual safety protection functions with a single operation.

[0039] A power-off module 5 is fixedly installed on the back of the frame 2. The power-off module 5 is mechanically linked with the flip door mechanism 3 and is used to cut off the main power circuit inside the maintenance box 1 when the flip door panel 301 is opened, so as to realize the forced safety protection of power-off when the door is opened.

[0040] like Figure 2 , Figure 3 , Figure 4 As shown, the flip door mechanism 3 includes a flip door panel 301 that is rotatably mounted on the front of the frame 2. The size of the flip door panel 301 matches the opening on the front of the frame 2. When closed, it can completely block the opening on the front of the frame 2. Together with the side sealing plate 201, the rear baffle 202, and the bottom plate 203, it can achieve full sealing of the bottom of the frame 2, effectively preventing external debris and moisture from entering.

[0041] Two pairs of rotating seats 307 are fixedly connected to the front of frame 2. Each pair of two rotating seats 307 are symmetrically distributed on the left and right sides of the front opening of frame 2. A rotating shaft 308 is rotatably connected between the two rotating seats 307 in each pair. The rotating shaft 308 is arranged in the horizontal direction and can rotate freely around its own axis. A connecting block 309 is fixedly connected to the surface of the rotating shaft 308. The end of the connecting block 309 away from the rotating shaft 308 is fixedly connected to the surface of the flip door panel 301. The connecting block 309 enables the flip door panel 301 to rotate synchronously with the rotating shaft 308. The flip door panel 301 can be flipped up around the rotating shaft 308 to open the front opening of frame 2 for cable routing. After being released, it rotates down to reset by its own gravity, realizing automatic sealing of the opening without manual assistance, making the operation convenient and efficient.

[0042] A transmission crossbar 302 is rotatably mounted on the inner side of frame 2. The transmission crossbar 302 is arranged horizontally and its two ends are rotatably connected to the inner sidewall of frame 2 via bearings, allowing it to rotate freely. A driven gear 303 is fixedly connected to the surface of the transmission crossbar 302. The driven gear 303 is coaxially fixed with the transmission crossbar 302 and rotates synchronously. A through hole 206 is provided on the front side of frame 2. One end of the rotating shaft 308 extends to the outside of the rotating seat 307 and is fixedly connected to a drive gear 310. The drive gear 310 rotates synchronously with the rotating shaft 308. The position of the drive gear 310 corresponds to the through hole 206. A portion of the teeth of the driven gear 303 extends to the outside of frame 2 through the through hole 206, and the drive gear 310 and the driven gear 303 mesh with each other.

[0043] When the flip door panel 301 flips upward, it drives the rotating shaft 308 and the drive gear 310 to rotate. The drive gear 310 drives the driven gear 303 and the transmission crossbar 302 to rotate synchronously through meshing transmission, converting the flipping motion of the flip door panel 301 into the rotational motion of the transmission crossbar 302, thus achieving stable power transmission.

[0044] A linkage shaft 304 is rotatably connected between the back of frame 2 and the rear baffle 202. The linkage shaft 304 is arranged horizontally and parallel to the transmission crossbar 302, with bearings at both ends providing rotational support. A worm gear 305 is fixedly connected to the surface of the linkage shaft 304. Worms 306 are fixedly connected to both ends of the transmission crossbar 302, with the positions of the worms 306 corresponding to the worm gears 305, and the worms 306 and worm gears 305 meshing with each other. When the transmission crossbar 302 rotates, it drives the worms 306 at both ends to rotate synchronously, and the worms 306 drive the worm gears 305 and the linkage shaft 304 to rotate through meshing transmission.

[0045] like Figure 4 , Figure 5As shown, the power-off module 5 includes a limiting fixing seat 501 fixed at the center of the back of the frame 2. The limiting fixing seat 501 is fixedly installed by bolts, and its position is stable and reliable. A limiting groove 502 is formed on the lower surface of the limiting fixing seat 501. The limiting groove 502 extends in the vertical direction. A push switch 503 is fixedly connected to the inner top wall of the limiting groove 502. The push switch 503 is connected in series in the main power control circuit of the maintenance box 1 to control the on and off of the main power.

[0046] A T-shaped trigger block 504 is slidably connected to the inner wall of the limiting groove 502. The T-shaped trigger block 504 can slide up and down along the inner wall of the limiting groove 502. The T-shaped trigger block 504 is located directly below the push switch 503. When sliding up and down, it can trigger or release the push switch 503. A first linkage cam 505 is fixedly connected to the surface of the transmission crossbar 302. The first linkage cam 505 rotates synchronously with the transmission crossbar 302. The position of the first linkage cam 505 corresponds to the power-off module 5, and the first linkage cam 505 is located directly below the T-shaped trigger block 504. The lower surface of the T-shaped trigger block 504 overlaps with the outer edge of the first linkage cam 505. A return spring 506 is fixedly connected to the upper surface of the T-shaped trigger block 504. The top end of the return spring 506 is fixedly connected to the inner top wall of the limiting groove 502. The return spring 506 provides a downward return force to the T-shaped trigger block 504, ensuring that the T-shaped trigger block 504 always remains in contact with the first linkage cam 505.

[0047] When the flip door panel 301 is flipped upward, the transmission crossbar 302 drives the first linkage cam 505 to rotate. The protrusion of the first linkage cam 505 pushes the T-shaped trigger block 504 upward. The T-shaped trigger block 504 slides upward along the limiting groove 502, compressing the reset spring 506 and triggering the push switch 503. This causes the push switch 503 to activate the power-off switch inside the maintenance box 1, thereby forcibly cutting off the main power circuit inside the maintenance box 1, eliminating potential safety hazards in power supply and distribution, and ensuring the wiring safety of operators.

[0048] When the tilting door panel 301 is closed by gravity reset, the first linkage cam 505 rotates in the opposite direction with the transmission crossbar 302, the protrusion disengages from the T-shaped trigger block 504, and the T-shaped trigger block 504 slides down to reset under the elastic force of the reset spring 506, releasing the push switch 503. The push switch 503 resets, and the main power circuit is restored to conduction, realizing the safety interlock of power supply when the door is closed. Power supply can only be restored after the tilting door panel 301 is fully closed to avoid operation with hidden dangers.

[0049] like Figure 6 , Figure 7 , Figure 8As shown, the cable positioning mechanism 4 includes a cable fixing seat 401 fixedly connected to the upper surface of the base plate 203. The cable fixing seat 401 is elongated and horizontally distributed inside the frame 2, with its position corresponding to the wire through holes 205 of the rear baffle 202. Each wire through hole 205 corresponds to the position of a cable positioning groove 402, ensuring that the cable can fall directly into the cable positioning groove 402 after passing through the wire through hole 205, thus achieving orderly cable arrangement. Several cable positioning grooves 402 are formed on the upper surface of the cable fixing seat 401. The cable positioning grooves 402 are semi-circular, and the inner wall is fixedly connected with an anti-slip coating, which can increase the friction with the cable sheath and prevent the cable from sliding.

[0050] Several cable positioning slots 402 are evenly arranged in a linear array, which can accommodate multiple temporary cables simultaneously, avoiding cable crossing and tangling, and improving the standardization of on-site wiring. Triangular support blocks are fixedly connected to both ends of the cable fixing base 401. The triangular support blocks have a stable structure and provide reliable support. Guide posts 403 are fixedly connected to the upper surface of the triangular support blocks. The guide posts 403 are arranged vertically, and movable blocks 404 are slidably fitted onto the surface of the guide posts 403. The movable blocks 404 can slide smoothly up and down along the guide posts 403, preventing displacement and shaking. Cable clamping blocks 405 are fixedly connected between two movable blocks 404. The cable clamping blocks 405 are parallel to the cable fixing base 401 and located directly above the cable positioning slots 402. Several anti-slip rubber pads 406 are fixedly connected to the lower surface of the cable clamping block 405. The anti-slip rubber pads 406 are evenly distributed in a straight array, and their positions correspond one-to-one with the cable positioning grooves 402. The anti-slip rubber pads 406 are soft in texture, which can avoid damaging the cable sheath and at the same time improve the clamping and fixing effect, preventing the cable from loosening and falling off.

[0051] An extension bracket 407 is fixedly connected to the upper surface of the movable block 404. The extension bracket 407 extends vertically upward, and a lifting push plate 408 is fixedly connected to the top of the extension bracket 407. The lifting push plate 408 is arranged horizontally. A second linkage cam 409 is fixedly connected to the surface of the linkage shaft 304. The second linkage cam 409 rotates synchronously with the linkage shaft 304. The position of the second linkage cam 409 corresponds to the lifting push plate 408, and the second linkage cam 409 overlaps with the upper surface of the lifting push plate 408. A compression spring 410 is sleeved on the surface of the guide column 403. The top of the compression spring 410 is fixedly connected to the lower surface of the movable block 404, and the bottom is fixedly connected to the upper surface of the triangular support block. The compression spring 410 provides an upward reset force for the movable block 404, ensuring that the lifting push plate 408 always remains in contact with the second linkage cam 409.

[0052] When the flip door panel 301 flips upward, the linkage shaft 304 drives the second linkage cam 409 to rotate. The protrusion of the second linkage cam 409 presses down on the lifting push plate 408. The lifting push plate 408 drives the movable block 404 and the cable pressing block 405 to slide downward along the guide column 403 through the extension bracket 407, compressing the compression spring 410, so that the anti-slip rubber pad 406 presses the cable in the cable positioning groove 402, thereby achieving stable cable fixation.

[0053] When the flip door panel 301 flips upward, the second linkage cam 409 rotates, driving the cable clamping block 405 downward to press the cable, completing the positioning. When the flip door panel 301 closes and resets, the protrusion of the second linkage cam 409 disengages from the lifting push plate 408, and the movable block 404 slides upward under the elastic force of the compression spring 410, causing the cable clamping block 405 to lift upward, separating the anti-slip rubber pad 406 from the cable, releasing the clamping state, and facilitating cable disassembly and retraction. This achieves synchronous control of the opening and closing of the flip door panel 301 and the clamping and releasing of the cable, eliminating the need for separate operation of the cable fixing device, simplifying the operation process, and improving ease of use.

[0054] A strip of steel is fixedly connected to the surface of the flip door panel 301. The position of the strip of steel corresponds to the strong magnetic positioning block 204. When the flip door panel 301 closes under the action of gravity, the strip of steel and the strong magnetic positioning block 204 attract each other to achieve auxiliary positioning of the flip door panel 301. This prevents the flip door panel 301 from being accidentally opened due to equipment vibration or external force, further improving the sealing stability and ensuring the protective effect of the enclosure.

[0055] In this embodiment, when the flip door 301 opens upwards, the main circuit is simultaneously de-energized and the cable is clamped and positioned. When the flip door 301 closes by gravity, the main circuit is simultaneously energized, the cable is released, and the opening is sealed. The entire mechanism adopts a purely mechanical structure without electronic control components, ensuring stable and reliable operation and a long service life. It can be widely applied to harsh industrial sites such as metallurgy, mining, and factories, effectively solving technical problems such as difficulty in sealing the bottom of the maintenance box for cable exit, inability to close the cabinet door, high risk of live wiring, and unstable cable fixation. This significantly improves the safety performance and ease of use of the power maintenance box.

[0056] The working principle of this embodiment is as follows: During use, the operator performs temporary maintenance wiring work by manually flipping the door panel 301 upward around the rotating shaft 308, opening the front opening of the frame 2 and exposing the internal cable positioning mechanism 4 for easy cable threading. When the door panel 301 flips upward, it drives the rotating shaft 308 and the drive gear 310 to rotate synchronously. The drive gear 310 drives the driven gear 303 to rotate through meshing transmission, thereby driving the transmission crossbar 302 to rotate. During the rotation of the transmission crossbar 302, it drives the first linkage cam 505 on the surface to rotate synchronously. The protrusion of the first linkage cam 505 pushes the T-shaped trigger block 504 upward. The T-shaped trigger block 504 slides upward along the limiting groove 502, triggering the push switch 503 to operate, forcibly cutting off the power to the main power circuit inside the maintenance box 1, thus achieving power cut-off upon opening the door.

[0057] Simultaneously, the worm gears 306 at both ends of the transmission crossbar 302 rotate synchronously with the transmission crossbar 302. The worm gears 306 drive the worm wheel 305 and the linkage shaft 304 to rotate through meshing transmission. The linkage shaft 304 drives the second linkage cam 409 on the surface to rotate. The protrusion of the second linkage cam 409 presses down on the lifting push plate 408. The lifting push plate 408 drives the movable block 404 and the cable clamping block 405 to slide down along the guide post 403 through the extension bracket 407. The anti-slip rubber pad 406 on the lower surface of the cable clamping block 405 presses the temporary cable in the cable positioning groove 402. After the wiring operation is completed, the flip door panel 301 is released. The flip door panel 301 rotates down around the rotation axis 308 and resets by its own gravity, completely sealing the front opening of the frame 2.

Claims

1. A power maintenance box structure with a gravity-reset bottom flip door, comprising a maintenance box body (1), characterized in that, The lower surface of the inspection box (1) is fixedly connected to a frame (2), the left and right sides of the frame (2) are fixedly provided with side sealing plates (201), the back of the frame (2) is fixedly connected with a rear baffle (202), the bottom of the frame (2) is fixedly connected with a bottom plate (203), and the inside of the frame (2) is provided with a flip door mechanism (3) and a cable positioning mechanism (4). The flip-top door mechanism (3) includes a flip-top door panel (301) rotatably mounted on the front of the frame (2), a transmission crossbar (302) rotatably mounted on the inner side of the frame (2), a driven gear (303) fixedly connected to the surface of the transmission crossbar (302), a linkage shaft (304) rotatably connected between the back of the frame (2) and the rear baffle (202), a worm gear (305) fixedly connected to the surface of the linkage shaft (304), and worms (306) fixedly connected to both the left and right ends of the transmission crossbar (302). The position of the worm (306) corresponds to that of the worm gear (305), and the worm (306) meshes with the worm gear (305).

2. The power maintenance box structure with a gravity-reset bottom flip door according to claim 1, characterized in that, The frame (2) has a through hole (206) on its front side, and two pairs of rotating seats (307) are fixedly connected to the front side of the frame (2). A rotating shaft (308) is rotatably connected between the two rotating seats (307) of each pair. A connecting block (309) is fixedly connected to the surface of the rotating shaft (308). The end of the connecting block (309) away from the rotating shaft (308) is fixedly connected to the surface of the flip door panel (301).

3. The power maintenance box structure with a gravity-reset bottom flip door according to claim 2, characterized in that, One end of the rotating shaft (308) extends to the outside of the rotating seat (307) and is fixedly connected to a drive gear (310). The position of the drive gear (310) corresponds to the through hole (206), and the position of the driven gear (303) corresponds to the through hole (206). A portion of the teeth of the driven gear (303) extends to the outside of the frame (2) through the through hole (206). The drive gear (310) meshes with the driven gear (303).

4. The power maintenance box structure with a gravity-reset bottom flip door according to claim 3, characterized in that, A power-off module (5) is fixedly installed on the back of the frame (2). The power-off module (5) includes a limiting fixing seat (501) fixed in the middle of the back of the frame (2). A limiting groove (502) is opened on the lower surface of the limiting fixing seat (501). A push switch (503) is fixedly connected to the inner top wall of the limiting groove (502), and a T-shaped trigger block (504) is slidably connected to the inner wall of the limiting groove (502). The T-shaped trigger block (504) is located directly below the push switch (503).

5. The power maintenance box structure with a gravity-reset bottom flip door according to claim 4, characterized in that, The transmission crossbar (302) is fixedly connected to a first linkage cam (505). The position of the first linkage cam (505) corresponds to the power-off module (5), and the first linkage cam (505) is located directly below the T-shaped trigger block (504). The lower surface of the T-shaped trigger block (504) overlaps with the first linkage cam (505). The upper surface of the T-shaped trigger block (504) is fixedly connected to a reset spring (506). The top end of the reset spring (506) is fixedly connected to the inner top wall of the limiting groove (502).

6. The power maintenance box structure with a gravity-reset bottom flip door according to claim 5, characterized in that, The cable positioning mechanism (4) includes a cable fixing seat (401) fixedly connected to the upper surface of the base plate (203). The cable fixing seat (401) is long and horizontally distributed inside the frame (2). Several cable positioning grooves (402) are opened on the upper surface of the cable fixing seat (401). Triangular support blocks are fixedly connected to both the left and right ends of the cable fixing seat (401). Guide posts (403) are fixedly connected to the upper surface of the triangular support blocks. Movable blocks (404) are slidably fitted on the surface of the guide posts (403). Cable pressing blocks (405) are fixedly connected between the two movable blocks (404).

7. The power maintenance box structure with a gravity-reset bottom flip door according to claim 6, characterized in that, The cable positioning groove (402) is semi-circular, and the inner wall of the cable positioning groove (402) is fixedly connected with an anti-slip coating. Several cable positioning grooves (402) are evenly arranged in a straight line array on the surface of the cable fixing seat (401). Several anti-slip rubber pads (406) are fixedly connected to the lower surface of the cable pressing block (405). Several anti-slip rubber pads (406) are evenly distributed in a straight line array on the surface of the cable pressing block (405), and the positions of the anti-slip rubber pads (406) correspond to the cable positioning grooves (402).

8. The power maintenance box structure with a gravity-reset bottom flip door according to claim 7, characterized in that, An extension bracket (407) is fixedly connected to the upper surface of the movable block (404), and a lifting push plate (408) is fixedly connected to the top of the extension bracket (407). A second linkage cam (409) is fixedly connected to the surface of the linkage shaft (304). The position of the second linkage cam (409) corresponds to the lifting push plate (408), and the second linkage cam (409) overlaps with the upper surface of the lifting push plate (408). A compression spring (410) is sleeved on the surface of the guide column (403). The top of the compression spring (410) is fixedly connected to the lower surface of the movable block (404), and the bottom of the compression spring (410) is fixedly connected to the upper surface of the triangular support block.

9. The power maintenance box structure with a gravity-reset bottom flip door according to claim 8, characterized in that, The base plate (203) has a strip-shaped mounting groove on its front side. A strong magnetic positioning block (204) is fixedly embedded in the inner wall of the strip-shaped mounting groove. A strip steel sheet is fixedly connected to the surface of the flip door panel (301). The position of the strip steel sheet corresponds to the strong magnetic positioning block (204). The strong magnetic positioning block (204) is used to adsorb and limit the flip door panel (301).

10. A power maintenance box structure with a gravity-reset bottom flip door according to claim 9, characterized in that, The surface of the rear baffle (202) is provided with a plurality of wire holes (205), which are evenly distributed in a horizontal array on the surface of the rear baffle (202), and each wire hole (205) corresponds to the position of the cable positioning groove (402).

Images