Cabinet door self-locking ring network box

Abstract

The application relates to the technical field of power supply equipment, and discloses a cabinet door self-locking ring network box which comprises a box body, a top support, a bearing shaft, a swinging device, a bearing tray, a cabinet door with a self-locking device and a right-angle sliding rail. The swinging device is internally provided with a top tension spring and a lower tension spring to form a double-buffer shock absorption structure. When the self-weight of the equipment increases, the shock absorption damping is synchronously improved, the vibration caused by road bumps and soil settlement can be blocked, and the internal electrical elements are protected. The cabinet door is provided with a self-locking device. The lock column is dislocated with the dislocation hole of the sliding rail to form secondary locking. Only when the cabinet door is translated can the lock be unlocked. When violent prying is performed, the lock column touches the inductive probe to trigger an alarm. The box body is provided with storage grooves on the two sides. After the door is opened, the cabinet door can be laterally stored without occupying the maintenance space. The bottom supporting device of the cabinet door can limit the bearing tray, and the tray does not shake during maintenance. The problems of poor shock absorption of the traditional ring network box, inconvenience in narrow scene maintenance, equipment maintenance shaking and the like are solved, and the application is suitable for outdoor power distribution scenes such as underground pipe galleries and cable wells.

Description

Technical Field

[0001] This application relates to the field of power supply equipment technology, and in particular to a self-locking ring mesh box with cabinet doors. Background Technology

[0002] Ring main units are core outdoor power distribution equipment in urban power distribution networks, residential power supply systems, and underground cable shafts. They are mainly used to carry and distribute electrical switches, transformers, cable joints, and other components, and are widely used in complex installation scenarios such as roads, underground utility tunnels, and narrow power distribution shafts. However, existing conventional ring main units have certain problems in actual commissioning and maintenance.

[0003] For example, outdoor ring main units have poor seismic resistance and vibration damping performance, which can easily cause internal electrical faults. Traditional ring main units often use rigid brackets to directly fix the internal electrical equipment to the box. Vibrations generated by road vehicle bumps, underground soil settlement, and equipment closing impacts are completely transmitted to the components. Long-term vibration can easily lead to loose terminals, displacement of switch contacts, and damage to cable insulation, frequently causing power outages. Some simple vibration damping structures on the market only have a single layer of buffer springs, and the vibration damping is fixed. When multiple sets of electrical equipment are added inside the box and the load increases, the vibration damping effect is greatly reduced. In response, this application proposes a self-locking ring main unit with cabinet doors to solve the above-mentioned problems. Summary of the Invention

[0004] This application proposes a self-locking ring network box with the advantages of dual spring shock absorption, self-weight adaptive shock resistance, secondary self-locking of the cabinet door, illegal opening alarm, side-opening of the cabinet door, and locking of the maintenance tray. It is used to solve the problems of vibration damage to electrical equipment, door lock failure posing safety hazards, limited maintenance operations in confined spaces, and equipment shaking during maintenance.

[0005] To achieve the above objectives, this application adopts the following technical solution: a self-locking ring mesh box for cabinet doors, comprising a ring mesh box body, top supports are provided on both sides of the inner wall of the ring mesh box near the top, connecting arms are fixedly installed on the top supports by bolts, load-bearing shafts are fixedly installed on one side of the connecting arms near both ends, swing devices are movably installed on the outer surface of the load-bearing shafts near both ends, a bearing tray is movably fitted on one side of the swing device near the bottom, an electrical equipment box is placed on top of the bearing tray, the bottom of the electrical equipment box is connected and fixedly fixed to the bearing tray by bolts, storage grooves are provided on both sides of the outer surface of the ring mesh box, a sliding shaft is fixedly installed on one side of the outer surface of the storage groove, and a sliding shaft is movably installed on one side of the outer surface of the storage groove. A limiting baffle is movably installed on the shaft. The limiting baffle and the sliding shaft are connected by a spring, which is in a compressed state. Side sliding grooves are provided on both sides of the ring mesh box near the top and bottom. Right-angle slide rails are provided on the top and bottom surfaces of the inner wall of the ring mesh box near the front. The right-angle slide rails are at right angles. A disengagement hole is provided on one side of the inner wall of the right-angle slide rail near one end. A box door is provided on the front of the ring mesh box. A door handle is provided on the front of the box door. A limiting slide rod is fixedly installed on the left side of the back of the box door near the top and bottom. A self-locking device is fixedly installed in the middle of the back of the box door near the top and bottom. A top support device is fixedly installed on the back of the box door near the bottom. The limiting slide rod slides in cooperation with the right-angle slide rail.

[0006] Furthermore, the swing device includes a swing arm, the interior of which is hollow. Shaft holes are provided on both sides of the swing arm near the top, and a load-bearing shaft passes through these holes. A sliding device is movably installed inside the swing arm, contacting the load-bearing shaft. A spring base is fixedly installed inside the swing arm below the sliding device. The bottom of the sliding device is connected to the spring base via a spring. A top tension spring is provided at the top of the swing arm, and its top is connected to the top of the inner wall of the ring mesh box. A connecting rod is provided on one side of the outer surface of the swing arm, and this connecting rod is movably fitted onto the load-bearing tray.

[0007] Furthermore, the sliding device includes a sliding block, the front of which has an arc-shaped groove, through which the load-bearing shaft passes. The top of the inner wall of the arc-shaped groove is set as an arc surface, which contacts and engages with the outer surface of the load-bearing shaft. A pull-down spring is provided at the bottom of the sliding block.

[0008] Specifically, the pull-down spring is initially in a stretched state, and the bottom of the pull-down spring is fixedly connected to the spring base.

[0009] Furthermore, the self-locking device includes a lock seat, which is fixedly connected to the cabinet door. The lock seat has a lock cavity inside, and a lock pin is movably installed inside the lock cavity via a sliding fit. The lock pin can slide inside the lock cavity. A return spring is provided on one side of the outer surface of the lock pin, with one end connected to the inner wall of the lock cavity. A sensing probe is provided at one end of the outer surface of the lock seat, with its sensing end extending into the lock cavity. The lock pin slides in fit with a right-angle slide rail. Initially, the lock pin is misaligned with the disengagement hole, and the cabinet door cannot be opened. When the cabinet door slides to both sides, the limiting slide bar moves to the right angle of the right-angle slide rail, at which point the lock pin is positioned corresponding to the disengagement hole, and the cabinet door can be opened. The sensing probe is connected to an alarm device via a signal connection.

[0010] Furthermore, the top support device includes a horizontal support section and an inclined guide section. The horizontal support section is in a horizontal state, and its top is flush with the bottom surface of the support tray in the initial state. The inclined guide section is inclined, and its head height is lower than its tail height. The width of the horizontal support section and the inclined guide section is greater than the distance between the support tray and the two sides of the inner wall of the ring network box.

[0011] This application has the following beneficial effects.

[0012] 1. When the enclosure vibrates, the non-rigid swaying structure isolates the vibration transmission. Combined with top tension springs and bottom tension springs for double buffering, the equipment's own weight further suppresses tray swaying, stabilizes components under outdoor bumpy conditions, prevents wiring from becoming loose and damaged, and extends the service life of the power distribution equipment.

[0013] 2. After the equipment is loaded with additional weight, the load-bearing pallet moves downward, the overall center of gravity is lowered, and the anti-overturning ability is improved; the top tension spring has increased tension and energy storage, and the shock absorption damping is enhanced simultaneously, eliminating the need for additional shock absorption accessories, adapting to multiple equipment specifications, and reducing the cost of supporting modifications.

[0014] 3. The cabinet door is equipped with a two-stage locking structure. Even after the regular door lock is unlocked, the cabinet door still needs to be slid horizontally to align with the disengagement hole before it can be opened. In the event of rust, breakage, or failure of the door lock, the misaligned locking pin will continuously jam the slide rail, preventing the cabinet door from opening on its own and eliminating security risks such as exposed equipment or theft.

[0015] 4. When the cabinet door is forcibly pried open, the locking pin slides and touches the built-in sensor, immediately triggering an alarm to send an abnormal signal. Maintenance personnel can quickly arrive at the scene to handle theft and vandalism, reducing power outages and lowering the workload of manual inspections.

[0016] 5. After unlocking and rotating the door 90 degrees, the door can be pushed into the storage slots on both sides of the cabinet and secured. Suitable for confined installation scenarios such as electrical shafts and narrow alleyways, the door panel will not protrude outwards and occupy passage space, ensuring unobstructed operation for maintenance personnel and significantly improving work convenience.

[0017] 6. During the process of pushing the cabinet door into the storage slot, the bottom support section adheres to the bottom surface of the support tray and the limiting swing device, ensuring the tray is completely fixed without any swaying. This prevents equipment from shaking or bumping when plugging or unplugging cables or replacing components, reducing operational errors and improving maintenance safety. Attached Figure Description

[0018] The accompanying drawings, which form part of this specification, illustrate embodiments disclosed in this application and, together with the specification, serve to explain the principles disclosed in this application.

[0019] This disclosure will become clearer with reference to the accompanying drawings and the following detailed description, wherein:

[0020] Figure 1 This is a structural diagram of the present invention;

[0021] Figure 2 This is a diagram of the internal structure of the present invention;

[0022] Figure 3 This is a structural diagram of the main body of the present invention;

[0023] Figure 4 This is a structural diagram of the load-bearing structure and the distribution box of the present invention;

[0024] Figure 5 This is a diagram of the load-bearing structure of the present invention;

[0025] Figure 6 This is a diagram of the swing device structure of the present invention;

[0026] Figure 7 This is a cross-sectional view of the swaying device of the present invention;

[0027] Figure 8 This is a diagram of the sliding device structure of the present invention;

[0028] Figure 9 This is a structural diagram of the cabinet door of the present invention;

[0029] Figure 10 This is a structural diagram of the cabinet door of the present invention;

[0030] Figure 11 For the present invention Figure 9 Enlarged view of point A in the middle;

[0031] Figure 12 For the present invention Figure 10 Enlarged view of section B in the middle.

[0032] In the diagram: 1. Ring mesh box body; 2. Top support; 3. Connecting arm; 4. Load-bearing shaft; 5. Swing device; 51. Swing arm; 52. Shaft hole; 53. Sliding device; 531. Sliding block; 532. Arc groove; 533. Pull-down spring; 54. Spring base; 55. Top tension spring; 56. Sleeve rod; 6. Bearing tray; 7. Electrical equipment box; 8. Storage slot; 9. Sliding shaft; 10. Limiting baffle; 11. Side sliding groove; 12. Right angle slide rail; 13. Disengagement hole; 14. Box door; 15. Door handle; 16. Limiting slide rod; 17. Self-locking device; 171. Lock seat; 172. Lock cavity; 173. Locking pin; 174. Return spring; 175. Sensor probe; 18. Top support device; 181. Horizontal support section; 182. Inclined guide section. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0034] Please refer to a self-locking ring mesh cage with cabinet doors. Figures 1-5 and Figures 9-10The ring network box includes a ring network box body 1. Top supports 2 are installed on both sides of the inner wall of the ring network box body 1 near the top. Connecting arms 3 are fixedly installed on the top supports 2 via bolts. Load-bearing shafts 4 are fixedly installed on one side of the connecting arms 3 near both ends. Swinging devices 5 are movably installed on the outer surface of the load-bearing shafts 4 near both ends. A carrying tray 6 is movably fitted on one side of the swinging device 5 near the bottom. An electrical equipment box 7 is placed on top of the carrying tray 6. The bottom of the electrical equipment box 7 is connected and firmly fixed to the carrying tray 6 via bolts. Storage grooves 8 are provided on both sides of the outer surface of the ring network box body 1. A sliding shaft 9 is fixedly installed on one side of the outer surface of the storage groove 8. A limit baffle 10 is movably installed on one side of the outer surface of the storage groove 8 via the sliding shaft 9. The limit baffle 10 and the sliding shaft... The components 9 are connected by a spring, which is in a compressed state. Side sliding grooves 11 are provided on both sides of the ring mesh box 1 near the top and bottom. Right-angle slide rails 12 are provided on the top and bottom surfaces of the inner wall of the ring mesh box 1 near the front. The right-angle slide rails 12 are at right angles. A disengagement hole 13 is provided on one side of the inner wall of the right-angle slide rail 12 near one end. A box door 14 is provided on the front of the ring mesh box 1. A door handle 15 is provided on the front of the box door 14. A limiting slide rod 16 is fixedly installed on the left side of the back of the box door 14 near the top and bottom. A self-locking device 17 is fixedly installed in the middle of the back of the box door 14 near the top and bottom. A top support device 18 is fixedly installed on the back of the box door 14 near the bottom. The limiting slide rod 16 slides with the right-angle slide rail 12.

[0035] Please see Figures 6-7 The swing device 5 includes a swing arm 51, which is hollow inside. Shaft holes 52 are provided on both sides of the swing arm 51 near the top, and the load-bearing shaft 4 passes through the shaft holes 52 through the swing arm 51. A sliding device 53 is movably installed inside the swing arm 51 and contacts the load-bearing shaft 4. A spring base 54 is fixedly installed inside the swing arm 51 below the sliding device 53. The bottom of the sliding device 53 is connected to the spring base 54 by a spring. A top tension spring 55 is provided at the top of the swing arm 51 and the top of the top tension spring 55 is connected to the top of the inner wall of the ring mesh box 1. A sleeve rod 56 is provided on one side of the outer surface of the swing arm 51 and is movably sleeved with the bearing tray 6.

[0036] When the ring network box 1 is subjected to vibration, the load-bearing shaft 4 is also affected and vibrates synchronously. Since the swing device 5 and the load-bearing shaft 4 are connected by a movable sleeve rather than a rigid connection, the vibration amplitude of the load-bearing shaft 4 cannot be fully transmitted to the swing device 5. Furthermore, the electrical equipment box 7 is entirely located on top of the support tray 6, which further reduces the vibration amplitude of the support tray 6 and the swing device 5 under the influence of the weight of the electrical equipment box 7. In addition, since the top of the swing arm 51 is provided with a top tension spring 55, and the top of the top tension spring 55 is connected to the top of the inner wall of the ring network box 1, when the swing arm 51 swings, the top tension spring 55 will be stretched and generate elastic force. This elastic force can further reduce the vibration amplitude of the swing arm 51, thereby ensuring that the electrical equipment box 7 can remain stable to the maximum extent when the ring network box 1 is under vibration, thus playing a protective role for the internal electrical equipment and improving the practicality of the device.

[0037] As the number of bearing pallets 6 and the number of electrical devices installed inside the bearing pallets 6 increase, the weight on top of the bearing pallets 6 increases and acts on the contact position between the arc groove 532 and the load-bearing shaft 4, causing the rocker arm 51 to move downward, shortening the distance between the bearing pallet 6 and the bottom surface of the inner cavity of the ring mesh box 1. This lowers the overall center of gravity of the electrical equipment box 7, increasing its seismic resistance. At the same time, during the downward movement of the rocker arm 51, the top tension spring 55 is stretched and stores more elastic potential energy, increasing its ability to suppress the vibration amplitude of the rocker arm 51. Thus, the more bearing pallets 6 and the more electrical devices installed inside the bearing pallets 6, the stronger the seismic resistance. It also prevents the top tension spring 55 from being overstretched, extending its service life, improving the practicality of the device, and further reducing its operating cost.

[0038] Please see Figure 8 The sliding device 53 includes a sliding block 531. An arc-shaped groove 532 is provided on the front side of the sliding block 531. The load-bearing shaft 4 passes through the sliding block 531 through the arc-shaped groove 532. The top of the inner wall of the arc-shaped groove 532 is set as an arc surface, and the arc surface contacts and cooperates with the outer surface of the load-bearing shaft 4. A pull-down spring 533 is provided at the bottom of the sliding block 531.

[0039] Please see Figures 7-8 In its initial state, the pull-down spring 533 is in a stretched state, and the bottom of the pull-down spring 533 is fixedly connected to the spring base 54.

[0040] Please see Figure 1 , Figure 3 , Figure 9 and Figure 11The self-locking device 17 includes a lock seat 171, which is fixedly connected to the door 14. The lock seat 171 has a lock cavity 172 inside, and a lock pin 173 is movably installed inside the lock cavity 172 through a sliding fit. The lock pin 173 can slide inside the lock cavity 172. A return spring 174 is provided on one side of the outer surface of the lock pin 173. One end of the return spring 174 is connected to the inner wall of the lock cavity 172. A sensing probe 175 is provided on one end of the outer surface of the lock seat 171. The sensing end of the sensing probe 175 extends into the interior of the lock cavity 172. The lock pin 173 is slidably engaged with the right-angle slide rail 12. In the initial state, the lock pin 173 is misaligned with the disengagement hole 13, and the door 14 cannot be opened. When the door 14 slides to both sides, the limiting slide rod 16 moves to the right angle of the right-angle slide rail 12. At this time, the lock pin 173 is located at the position corresponding to the disengagement hole 13, and the door 14 can be opened.

[0041] When both doors 14 are in the unlocked state, they cannot be opened directly. It is necessary to hold the door handle 15 and push the door 14 to both sides so that the limit slide bar 16 slides to the right angle of the right angle slide rail 12, and at the same time the lock pin 173 slides to the disengagement hole 13. Only then can the door 14 be opened, and the electrical equipment inside the electrical equipment box 7 be maintained and repaired. This avoids the problem of the door 14 being in a normally open state due to the lock cylinder being damaged after long-term use of the ring network box, which could cause damage or theft of the internal equipment. It achieves a secondary locking effect and improves the reliability of the device.

[0042] When a non-operator attempts to open the cabinet door 14, because the locking pin 173 and the disengagement hole 13 are not in a corresponding state, when the cabinet door 14 is tried to be opened and subjected to force, the locking pin 173 is blocked by the right-angle slide rail 12 and slides inside the lock cavity 172, and comes into contact with the sensing end of the sensing probe 175, thereby activating the sensing probe 175. Since the sensing probe 175 is connected to the alarm device through a signal connection, the control personnel can be notified by the alarm that the lock cylinder of the cabinet door 14 is damaged and has been attempted to be opened, so that maintenance personnel can be dispatched in time for inspection and repair, thus improving the reliability of the device.

[0043] When the box door 14 is pushed to both sides, the box door 14 will simultaneously push the limiting baffle 10 to move and open the storage slot 8. At this time, when the box door 14 is opened, the locking pin 173 disengages from the inside of the right angle slide rail 12 through the disengagement hole 13. When the box door 14 is opened to a 90-degree angle with the front of the ring net box body 1, the right angle slide rail 12 can push the box door 14 into the storage slot 8. This allows maintenance personnel to open the box door 14 and push it into the storage slot 8 when the device is installed in a relatively narrow area. This effectively avoids the problem of the opened box door 14 blocking the passage and preventing the operator from passing through normally, thus affecting the normal operation of maintenance and repair work. This improves the practicality of the device.

[0044] Please see Figure 2 and Figure 9 The top support device 18 includes a horizontal support section 181 and an inclined guide section 182. The horizontal support section 181 is in a horizontal state and its top is flush with the bottom surface of the bearing pallet 6 in the initial state. The inclined guide section 182 is inclined and its head height is lower than its tail height. The width of the horizontal support section 181 and the inclined guide section 182 is greater than the distance between the bearing pallet 6 and the inner walls of the ring network box 1.

[0045] When the door 14 is opened and pushed into the storage slot 8, the limiting slide bar 16 and the top support device 18 can slide inside the side slide groove 11 without obstruction. At the same time, since the horizontal support section 181 is in a horizontal state and its top is flush with the bottom surface of the carrying tray 6 in the initial state, and the inclined guide section 182 is inclined with its head height lower than its tail height, and the width of the horizontal support section 181 and the inclined guide section 182 is greater than the distance between the carrying tray 6 and the inner walls of the ring network box 1, the top surface of the horizontal support section 181 will contact the bottom surface of the carrying tray 6 when the door 14 is inserted into the storage slot 8, thereby fixing the carrying tray 6. At this time, the swing device 5 cannot swing, avoiding the problem of the electrical equipment box 7 shaking continuously during maintenance or repair by the operator, thus providing the practicality of the device.

[0046] The method of using this invention is as follows:

[0047] When the ring network box 1 is subjected to vibration, the load-bearing shaft 4 is also affected and vibrates synchronously. Because the swing device 5 and the load-bearing shaft 4 are connected by a movable sleeve rather than a rigid connection, the vibration amplitude of the load-bearing shaft 4 cannot be fully transmitted to the swing device 5. Furthermore, since the electrical equipment box 7 is entirely located on top of the support tray 6, the vibration amplitude of the support tray 6 and the swing device 5 is further reduced under the weight of the electrical equipment box 7. In addition, because a top tension spring 55 is provided at the top of the swing arm 51, and the top of the top tension spring 55 is connected to the top of the inner wall of the ring network box 1, when the swing arm 51 swings, the top tension spring 55 is stretched and generates elastic force. This elastic force can further reduce the vibration amplitude of the swing arm 51, thereby ensuring the stability of the ring network box 1. Under vibration, the electrical equipment box 7 can maintain maximum stability, thus protecting the internal electrical equipment. When the number of support trays 6 and the number of electrical devices installed inside them increase, the weight on top of the support trays 6 increases, acting on the contact point between the arc groove 532 and the load-bearing shaft 4. This causes the rocker arm 51 to move downwards, shortening the distance between the support trays 6 and the bottom surface of the ring network box 1's inner cavity. This lowers the overall center of gravity of the electrical equipment box 7, increasing its seismic resistance. Simultaneously, during the downward movement of the rocker arm 51, the top tension spring 55 is stretched and stores more elastic potential energy, increasing its ability to suppress the vibration amplitude of the rocker arm 51. This, in turn, ensures that the number of support trays 6 and the number of electrical devices installed inside them are balanced. The more gas equipment there is, the stronger the shock resistance. When both doors 14 are in the unlocked state, they cannot be opened directly. It is necessary to hold the door handle 15 and push the doors 14 to both sides, causing the limit slide bar 16 to slide to the right angle of the right-angle slide rail 12. At the same time, the locking pin 173 slides to the disengagement hole 13. Only then can the doors 14 be opened, allowing maintenance and repair of the electrical equipment inside the electrical equipment box 7. This prevents the doors 14 from being in a normally open state due to lock cylinder damage caused by long-term use of the ring main unit, thus avoiding damage or theft of internal equipment. It achieves a secondary locking effect. When non-operators attempt to open the doors 14, because the locking pin 173 and the disengagement hole 13 are not in a corresponding state, when the doors 14 are attempted to be opened and subjected to force, the locking pin 173... The lock cylinder slides inside the lock cavity 172 due to the obstruction effect of the right-angle slide rail 12 and comes into contact with the sensing end of the sensing probe 175, thereby activating the sensing probe 175. Since the sensing probe 175 is connected to the alarm device via a signal connection, the control personnel can be notified by the alarm that the lock cylinder of the equipment box door 14 is damaged and someone has attempted to open it, so that maintenance personnel can be dispatched in time for inspection. When the box door 14 is pushed to both sides, the box door 14 will simultaneously push the limit baffle 10 to move and open the storage slot 8. At this time, the box door 14 is opened, and the lock pin 173 disengages from the inside of the right-angle slide rail 12 through the disengagement hole 13. When the box door 14 is opened to a 90-degree angle with the front of the ring network box body 1, and the right-angle slide rail 12 is at a right angle,The door 14 can be pushed into the storage slot 8, allowing maintenance personnel to open the door 14 and push it into the storage slot 8 when the device is installed in a narrow area. This effectively avoids the problem of the opened door 14 blocking the passage and preventing normal operation of maintenance work. When the door 14 is opened and pushed into the storage slot 8, the limiting slide bar 16 and the top support device 18 can slide inside the side slide groove 11 without obstruction. Simultaneously, because the horizontal support section 181 is horizontal and its top is flush with the bottom surface of the initial bearing tray 6, and the inclined guide section 182 is inclined with its head height lower than its tail height, and the width of the horizontal support section 181 and the inclined guide section 182 is greater than the distance between the bearing tray 6 and the inner walls of the ring network box 1, the top surface of the horizontal support section 181 will contact the bottom surface of the bearing tray 6 during the insertion of the door 14 into the storage slot 8, thus fixing the bearing tray 6. At this time, the swing device 5 cannot swing.

Claims

1. A self-locking ring mesh cage for cabinet doors, characterized in that, The ring mesh box includes a housing (1). A top support (2) is provided on both sides of the inner wall of the ring mesh box (1) near the top. A connecting arm (3) is fixedly installed on the top support (2) by bolt connection. A load-bearing shaft (4) is fixedly installed on one side of the connecting arm (3) near both ends. A swing device (5) is movably installed on the outer surface of the load-bearing shaft (4) near both ends. A bearing tray (6) is fixedly installed on one side of the swing device (5) near the bottom. An electrical equipment box (7) is placed on the top of the bearing tray (6).

2. The cabinet door self-locking ring mesh box according to claim 1, characterized in that, The swing device (5) includes a swing arm (51), the interior of which is hollow. Shaft holes (52) are provided on both sides of the swing arm (51) near the top, and the load-bearing shaft (4) passes through the swing arm (51) through the shaft holes (52). A sliding device (53) is movably installed inside the swing arm (51), and the sliding device (53) is in contact with the load-bearing shaft (4). A spring base (54) is fixedly installed inside the swing arm (51) below the sliding device (53). A top tension spring (55) is provided on the top of the swing arm (51), and the top of the top tension spring (55) is connected to the top of the inner wall of the ring net box (1). A sleeve rod (56) is provided on one side of the outer surface of the swing arm (51), and the sleeve rod (56) is movably sleeved with the bearing tray (6).

3. A cabinet door self-locking ring mesh box according to claim 2, characterized in that, The sliding device (53) includes a sliding block (531), the front of which is provided with an arc-shaped groove (532), the load-bearing shaft (4) passes through the sliding block (531) through the arc-shaped groove (532), and a pull-down spring (533) is provided at the bottom of the sliding block (531); The pull-down spring (533) is initially in a stretched state, and the bottom of the pull-down spring (533) is fixedly connected to the spring base (54).

4. A cabinet door self-locking ring mesh box according to claim 3, characterized in that, The outer surface of the ring mesh box (1) is provided with storage grooves (8) on both sides. A sliding shaft (9) is fixedly installed on one side of the outer surface of the storage groove (8). A limiting baffle (10) is movably installed on one side of the outer surface of the storage groove (8) through the sliding shaft (9). The limiting baffle (10) and the sliding shaft (9) are connected by a spring. Side sliding grooves (11) are provided on both sides of the ring mesh box (1) near the top and bottom. Right angle slide rails (12) are provided on the top and bottom surfaces of the inner wall of the ring mesh box (1) near the front. A dislocation hole (13) is provided on one side of the inner wall of the right angle slide rail (12) near one end.

5. A cabinet door self-locking ring mesh box according to claim 4, characterized in that, The front of the ring network box body (1) is provided with a box door (14), the front of the box door (14) is provided with a door handle (15), a limit slide bar (16) is fixedly installed on the left side of the back of the box door (14) near the top and bottom, a self-locking device (17) is fixedly installed in the middle of the back of the box door (14) near the top and bottom, and a top support device (18) is fixedly installed on the back of the box door (14) near the bottom. The limiting slide bar (16) is in sliding engagement with the right-angle slide rail (12).

6. A cabinet door self-locking ring mesh box according to claim 5, characterized in that, The self-locking device (17) includes a lock seat (171), which is fixedly connected to the door (14). The lock seat (171) has a lock cavity (172) inside. A lock pin (173) is movably installed inside the lock cavity (172) by sliding fit. The lock pin (173) can slide inside the lock cavity (172). A return spring (174) is provided on one side of the outer surface of the lock pin (173). One end of the return spring (174) is connected to the inner wall of the lock cavity (172). A sensing probe (175) is provided on one end of the outer surface of the lock seat (171). The sensing end of the sensing probe (175) extends into the interior of the lock cavity (172). The locking pin (173) is slidably engaged with the right-angle slide rail (12).

7. A cabinet door self-locking ring mesh box according to claim 6, characterized in that, In its initial state, the locking pin (173) is misaligned with the dislocation hole (13), and the door (14) cannot be opened. When the door (14) slides to both sides, the limiting slide bar (16) moves to the right angle of the right angle slide rail (12), and the locking pin (173) is located at the position corresponding to the dislocation hole (13), and the door (14) can be opened.

8. A cabinet door self-locking ring mesh box according to claim 7, characterized in that, The top support device (18) includes a horizontal support section (181) and an inclined guide section (182). The horizontal support section (181) is in a horizontal state and its top is flush with the bottom surface of the support tray (6) in the initial state. The inclined guide section (182) is inclined and its head height is lower than its tail height.

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