Power grid power supply distribution box with intelligent locking power connection function and locking power connection method of power grid power supply distribution box

Abstract

The invention relates to a power grid power supply distribution box capable of locking intelligent power connection and a locking power connection method thereof, and the power grid power supply distribution box comprises a driving part which is installed on a second box door, is provided with a gear cylinder, and is used for driving the gear cylinder to transversely move and intermittently rotate; and the lifting piece is arranged on the second box door through a guide block and is connected with the gear cylinder. According to the invention, when the second box door is opened, the door magnetic switch can automatically disconnect the circuit to trigger the conduction of the opening loop, and this operation enables the circuit breaker to trip to cut off the power supply in the distribution box; through the mode, all branch switches in the distribution box can be switched off step by step according to a certain sequence under the action of the step-by-step locking structure, so that safe power failure can be realized during power connection; by means of the step-by-step power-off operation design, large-scale power cut-off can be effectively avoided, and equipment damage caused by current impact or voltage fluctuation is reduced.

Description

Technical Field

[0001] The invention relates to a power distribution box for power grid with intelligent locked power connection and a locked power connection method thereof. Background Art

[0002] The grid power supply distribution box with intelligent locking power connection is a power distribution equipment with intelligent functions and safety locking design; it is mainly used to deliver electricity from the grid to end users, and has intelligent control and protection functions; based on the traditional distribution box, it integrates automatic monitoring, remote control, fault detection, data acquisition and other technologies to improve the efficiency and safety of power management.

[0003] Its "locking" function means that when certain special circumstances occur, the device can be automatically or manually disconnected or locked to prevent improper access or erroneous operation, which is crucial to ensuring equipment safety and the stability of the power grid. Through intelligent technology, operators can monitor the operating status of the power grid in real time, promptly discover and resolve problems in power supply, reduce human errors, and improve the reliability and response speed of the power system.

[0004] The current grid power supply distribution boxes with locked intelligent power connection, especially in some special power consumption places, usually need to implement step-by-step switching operations during power off and power supply. This is because the power consumption equipment in these places is relatively complex, with multiple electrical circuits and protection devices. In this case, if the distribution box does not have the function of step-by-step power off and power supply, the phenomenon of skipping power off or power supply may occur. Common distribution boxes usually do not have this step-by-step operation capability, which can easily cause some problems.

[0005] For example, during operation, the operator may mistakenly skip certain switches due to negligence or unfamiliarity with the operating procedures of the equipment, causing the upstream or downstream circuits to be cut off or connected; this bypassing operation may cause certain key equipment to lose their due protection, especially when the power system is under heavy load, which may cause current surges or voltage fluctuations, thereby affecting the stability of the entire power system; further, this operational error not only poses a threat to the safety of the equipment, but may also bring hidden dangers to power safety, and even cause more serious consequences such as equipment damage or fire. Summary of the invention

[0006] The object of the present invention is to provide a grid power distribution box with intelligent locked power connection and a locked power connection method thereof, so as to solve the problems raised in the above-mentioned background technology.

[0007] To achieve the above object, the present invention provides the following technical solutions: A grid power distribution box with locking intelligent power connection, comprising a box body, a first box door and a second box door rotatably mounted on the box body, and a plurality of branch switches arranged inside the box body, characterized in that a step-by-step locking structure is arranged on the second box door, and the step-by-step locking structure comprises: A driving member, the driving member is mounted on the second door, the driving member is provided with a gear cylinder, and the driving member is used to drive the gear cylinder to move laterally and rotate intermittently; A lifting member is installed on the second box door through a guide block, and the lifting member is connected to the gear cylinder. When the gear cylinder rotates, it drives multiple lifting members to vertically lift and lower on the second box door step by step. A toggle member that can be adjusted to slide horizontally is connected to the lifting member through a limit member. The toggle member is connected to the switch handle of the branch switch. When the lifting member is lifted and lowered, the switch handles of the multiple branch switches are pushed up or pulled down step by step.

[0008] A grid-powered distribution box with a locked intelligent power connection as described above: the driving member comprises two mounting seats mounted on the second box door, a screw rod and an intermittent mechanism rotating between the two mounting seats, a driving member connected to the screw rod, and a transverse movement mechanism arranged on the screw rod and connected to the gear cylinder; The driving component includes a first gear arranged at one end of the screw rod, a second gear meshing with the first gear, and a motor whose output shaft is fixed to the second gear. The motor is installed on the second box door and is used to drive the screw rod to rotate between the two mounting seats when the motor is in operation.

[0009] A grid power supply distribution box with a locked intelligent power connection as described above: the intermittent mechanism includes a transmission rod rotating between the two mounting seats, a plurality of spiral grooves equally spaced on the transmission rod, and a straight groove formed on the transmission rod to connect the plurality of spiral grooves end to end, wherein the straight groove is formed parallel to the length direction of the transmission rod.

[0010] A grid power distribution box with locked intelligent power connection as described above: the transverse movement mechanism comprises a sleeve threadedly connected to the screw rod and a connecting plate arranged at both ends of the sleeve and slidably sleeved on the transmission rod; The gear cylinder is placed between the two connecting plates, and rotatable rotating rings are arranged between the two ends of the gear cylinder and the two connecting plates, and the rotating rings are used to reduce the contact friction between the gear cylinder and the connecting plates; A convex ball is fixedly connected to the inner wall of the cavity of the gear cylinder, and the convex ball is adaptively connected to the spiral groove and the straight groove.

[0011] A grid power distribution box with locked intelligent power connection as described above: the lifting member includes a lifting frame slidably connected to the guide block, a plug-in cylinder arranged on both sides of the lifting frame, a positioning member connected to the lifting frame and installed on the second box door, and a rack arranged on the lifting frame; The rack is meshed with the gear cylinder.

[0012] A grid-powered distribution box with a locked intelligent power connection as described above: the positioning member includes a spring sheet installed on the second box door and a ball head arranged on the spring sheet, and the ball head is connected to a corresponding slot hole opened on the lifting frame, and is used to use the rebound force of the spring sheet to enable the ball head to engage in the slot hole on the lifting frame to position the height of the lifting frame on the second box door.

[0013] A grid power distribution box with a locked intelligent power connection as described above: the toggle member comprises two plug-in posts slidably plugged into the plug-in cylinder, a connecting frame arranged on the two plug-in posts, and a rotating shaft connecting the two connecting frames; It also includes a sliding groove formed on the plug-in column and engaging grooves formed on both sides of the sliding groove and on the plug-in column.

[0014] A grid power distribution box with a locked intelligent power connection as described above: the limiting component includes two sliding blocks sliding on the plug-in cylinder, a locking strip arranged on the sliding block, a pressing block arranged on the locking strip on the side away from the sliding block, and a spring arranged between the two sliding blocks for controlling the distance between them.

[0015] A grid power supply distribution box with a locked intelligent power connection as described above: the locking strip is locked with the locking groove, and the minimum distance between the two pressing blocks is the same as the width distance of the sliding groove, so that the locking state of the locking strip on the locking groove can be disengaged when the two pressing blocks are pinched.

[0016] The method for locking power connection of a power distribution box for power supply of a power grid using the above-mentioned locking intelligent power connection comprises the following steps: Step 1: A door magnetic switch electrically connected to a circuit breaker in the box is provided on the second box door. When the second box door is opened, the door magnetic switch is disconnected, the opening circuit is connected, and the circuit breaker trips; Step 2: The motor drives the gear cylinder to move horizontally and rotate on the screw rod, and the gear cylinder drives multiple lifting frames to move up and down. Through the movement of the resistance cylinder, multiple branch switches inside the control box are tripped and disconnected step by step; Step 3: The equipment inside the box is powered off and the power connection operation is carried out. When the power is on, close the second box door. At this time, the door magnetic switch is closed, the closing circuit is connected, and the circuit breaker allows closing; Step 4: The motor moves in the opposite direction, driving the gear cylinder to move horizontally and rotate. The gear cylinder drives multiple lifting frames to move up and down. By moving the resistance cylinder, multiple branch switches inside the box are controlled to close and supply power step by step.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The first door and the second door are designed inside the distribution box. The second door is provided with a step-by-step locking structure and is equipped with a door magnetic switch electrically connected to the circuit breaker inside the distribution box. This design aims to improve the safety of the distribution box and prevent accidents or misoperations that may occur during operation. Through this design, the operation of the distribution box becomes more standardized and safer. In actual use, the first door of the distribution box can be opened without affecting the normal operation of the power system, so that the staff can check the operation of the equipment inside the distribution box. When the distribution box needs to be inspected, maintained or inspected, the staff only needs to open the first door to observe, record or perform other inspections on the electrical equipment. This process will not cause any circuit disconnection or power interruption, so it will not affect the normal power supply.

[0018] However, when it comes to power connection operations, the second box door must be opened; when the second box door is opened, the door magnetic switch will automatically disconnect the circuit, thereby triggering the conduction of the disconnect circuit. This operation will cause the circuit breaker to trip and cut off the power supply in the distribution box; in this way, all branch switches inside the distribution box will be disconnected step by step in a certain order under the action of the step-by-step locking structure, ensuring that power can be safely cut off when connecting power; this step-by-step power-off operation design can effectively avoid large-scale power cuts, reduce equipment damage caused by current shocks or voltage fluctuations, and ensure the safety of equipment inside the distribution box to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure of the grid power supply distribution box for locking intelligent power connection.

[0020] Figure 2 The schematic diagram of the structure is that the first door of the grid power supply distribution box with locked intelligent power connection is opened.

[0021] Figure 3 The schematic diagram of the structure of the second box door opening in the grid power supply distribution box with locked intelligent power connection.

[0022] Figure 4 The schematic diagram of the structure of the step-by-step locking structure in the power distribution box of the power grid for locking intelligent power connection is shown in FIG.

[0023] Figure 5 This is a schematic diagram of the structure of the driving components in the power distribution box of the power grid for locking intelligent power connection.

[0024] Figure 6 This is a schematic diagram of the structure of the gear cylinder in the power distribution box of the power grid for locking intelligent power connection.

[0025] Figure 7 A schematic diagram of the structure of the lifting parts in the power distribution box of the power grid for locking intelligent power connection.

[0026] Figure 8 This is a structural schematic diagram of the other position of the lifting parts in the power distribution box of the power grid with locked intelligent power connection.

[0027] Figure 9 This is a schematic diagram of the structure of the disassembled lifting parts in the power distribution box of the power grid with locked intelligent power connection.

[0028] Figure 10 The schematic diagram of the structure of the toggle member in the power distribution box of the power grid for locking intelligent power connection.

[0029] Figure 11 The schematic diagram of the structure of the limiter in the power distribution box of the power grid for locking intelligent power connection.

[0030] Figure 12 The schematic diagram of the structure of the positioning component in the power distribution box of the power grid for locking intelligent power connection.

[0031] In the figure: 1. box body; 2. first box door; 3. second box door; 4. branch switch; 5. mounting seat; 6. screw; 7. first gear; 8. second gear; 9. motor; 10. transmission rod; 11. spiral groove; 12. straight groove; 13. sleeve; 14. connecting plate; 15. gear cylinder; 16. rotating ring; 17. convex ball; 18. rack; 19. lifting frame; 20. guide block; 21. plug-in cylinder; 22. plug-in column; 23. snap-fit ​​groove; 24. sliding groove; 25. connecting frame; 26. rotating shaft; 27. resistance cylinder; 28. pressing block; 29. ​​sliding block; 30. snap-fit ​​strip; 31. spring; 32. leaf spring; 33. ball head. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0033] See also Figures 1 to 4 In an embodiment of the present invention, a grid power distribution box with intelligent locking power connection includes a box body 1, a first box door 2 and a second box door 3 rotatably mounted on the box body 1, and a plurality of branch switches 4 arranged inside the box body 1, characterized in that a step-by-step locking structure is arranged on the second box door 3, and the step-by-step locking structure includes: A driving member, the driving member is mounted on the second door 3, the driving member is provided with a gear cylinder 15, and the driving member is used to drive the gear cylinder 15 to move horizontally and rotate intermittently; Multiple lifting members are installed on the second box door 3 through the guide block 20, and the multiple lifting members are connected to the gear cylinder 15. When the gear cylinder 15 rotates, the multiple lifting members are driven to vertically lift and lower on the second box door 3 step by step. A toggle member that can be adjusted by horizontal sliding is connected to the lifting member through a limit member. The toggle member is connected to the switch handle of the branch switch 4. When the lifting member is lifted and lowered, the switch handles of the multiple branch switches 4 are pushed up or pulled down step by step.

[0034] In this embodiment, a door magnetic switch is provided on the second box door 3, and the door magnetic switch is electrically connected to the circuit breaker inside the box body 1; this design has important safety functions, especially in the daily equipment inspection, maintenance and inspection process, it can effectively ensure the safety of the staff; when conducting routine inspections, the staff only needs to open the first box door 2; a plurality of observation windows are provided on the second box door 3, and these observation windows enable the staff to observe the equipment status inside the box body 1 from the outside, so that there is no need to open the second box door 3; the advantage of this design is that it can not only ensure the normal inspection of the equipment operation, but also avoid unnecessary power interruption caused by frequent door opening; However, when it is necessary to carry out power connection operation or other operation involving circuit switching, the staff must open the second box door 3; at this time, the door magnetic switch will automatically disconnect, thereby causing the opening circuit to be connected and triggering the circuit breaker to trip; in this way, the power supply of the power distribution system will be cut off, ensuring the safety of equipment operation and avoiding unnecessary power accidents; After the circuit breaker trips, the driving member will start and drive the gear cylinder 15 to move horizontally, and the gear cylinder 15 will also rotate intermittently; during this process, the gear cylinder 15 can gradually drive multiple lifting members to perform lifting actions; each lifting member is provided with a toggle member, and these toggle members are precisely connected with the switch handles of multiple branch switches 4; during the lifting process of the lifting member, the toggle member will push the switch handle of the branch switch 4, thereby realizing the step-by-step power-off operation of multiple branch switches 4; through this design, it can be ensured that in special power-using places, all branch switches 4 will be cut off in a predetermined order, preventing the operator from negligently performing a skip-level switch operation; this step-by-step power-off process can avoid large-scale power outages and equipment damage, and ensure the stability and safety of the power system during operation; In addition, in some cases, the staff may not need to cut off the power supply to open the second box door 3; in this case, the switch provided on the second box door 3 can be used to control the switch state of the circuit breaker; the staff can directly control the switch of the circuit breaker through this switch without disconnecting the power supply; this is the application of the existing technology, which can operate and manage more flexibly, improve the convenience and working efficiency of the equipment. Through these precise designs and operating mechanisms, this distribution box improves the operating flexibility while ensuring safety; whether it is equipment inspection, maintenance, or in special power demand occasions, it can provide reliable guarantee to ensure that every operation can be carried out in accordance with safety specifications, reducing the risks that may be brought about by improper operation; this design not only improves the safety of the equipment, but also ensures that the entire power system can always maintain a stable and reliable operating state in any operation link.

[0035] Please refer to Figures 4 to 6 , as a further solution of the present invention, the driving member includes two mounting seats 5 mounted on the second box door 3, a screw rod 6 rotatably arranged between the two mounting seats 5 and an intermittent mechanism, a driving component connected to the screw rod 6, and a transverse movement mechanism arranged on the screw rod 6 and connected to the gear cylinder 15; The driving component includes a first gear 7 arranged at one end of the screw rod 6, a second gear 8 meshing with the first gear 7, and a motor 9 whose output shaft is fixed to the second gear 8. The motor 9 is mounted on the second box door 3, and when the motor 9 operates, it is used to drive the screw rod 6 to rotate between the two mounting seats 5.

[0036] The intermittent mechanism includes a transmission rod 10 rotatably arranged between the two mounting seats 5, a plurality of spiral grooves 11 equally spaced on the transmission rod 10, and a straight groove 12 arranged on the transmission rod 10 to connect the heads and tails of the plurality of spiral grooves 11. The straight groove 12 is arranged parallel to the length direction of the transmission rod 10.

[0037] The transverse movement mechanism includes a sleeve 13 threadedly connected to the screw rod 6 and connecting plates 14 arranged at both ends of the sleeve 13 and slidably sleeved on the transmission rod 10; The gear cylinder 15 is placed between the two connecting plates 14, and rotatable rotating rings 16 are arranged between the two ends of the gear cylinder 15 and the two connecting plates 14 respectively. The rotating rings 16 are used to reduce the contact friction between the gear cylinder 15 and the connecting plates 14; A convex ball 17 is fixedly connected to the inner wall of the cavity of the gear cylinder 15, and the convex ball 17 is adaptively connected to the spiral grooves 11 and the straight groove 12.

[0038] In this embodiment, when the motor 9 is in operation, the second gear 8 drives the first gear 7 to rotate, and the first gear 7 is arranged on the screw rod 6, so that the screw rod 6 rotates between the two mounting seats 5; the connecting plates 14 arranged at both ends of the sleeve 13 threadedly connected to the screw rod 6 are slidably sleeved on the transmission rod 10; the design of this structure not only ensures that the sleeve 13 does not rotate during the rotation of the screw rod 6, but also effectively realizes the lateral movement of the sleeve 13 on the screw rod 6; as the screw rod 6 rotates, the sleeve 13 will move laterally to perform its specific operation task; The two connecting plates 14 fixed on the sleeve 13 are rotatably connected to the gear cylinder 15 via a rotating ring 16; this connection mode enables the lateral movement of the sleeve 13 to directly affect the movement of the gear cylinder 15; the gear cylinder 15 is provided with a convex ball 17 on the inner wall, and the transmission rod 10 is provided with a spiral groove 11 and a straight groove 12, the design of these grooves precisely matches the movement path of the convex ball 17, so that the convex ball 17 can slide therein and be driven by the lateral movement of the sleeve 13; In the process of the sleeve 13 driving the gear barrel 15 to move horizontally, the sliding cooperation between the convex ball 17 and the spiral groove 11 and the straight groove 12 of the transmission rod 10 is very important; the design of the spiral groove 11 enables the convex ball 17 to rotate smoothly along the spiral trajectory when moving, and when the convex ball 17 moves to the position of the straight groove 12, it will move in a straight line according to the texture of the straight groove 12, ensuring that the gear barrel 15 can move accurately and stably; the transmission rod 10 is arranged between the two mounting seats 5. This structure not only ensures the stability of the transmission rod 10, but also allows the entire transmission system to maintain a good synergistic effect during the operation.

[0039] See also Figures 7 to 9 and Figure 12 As a further solution of the present invention, the lifting member includes a lifting frame 19 slidably connected to the guide block 20, plug-in tubes 21 arranged on both sides of the lifting frame 19, a positioning member connected to the lifting frame 19 and installed on the second box door 3, and a rack 18 arranged on the lifting frame 19; The rack 18 is meshed with the gear cylinder 15 .

[0040] The positioning member includes a spring leaf 32 installed on the second box door 3 and a ball head 33 arranged on the spring leaf 32. The ball head 33 is connected to a corresponding slot hole opened on the lifting frame 19, and is used to use the rebound force of the spring leaf 32 to enable the ball head 33 to engage in the slot hole on the lifting frame 19 to position the height of the lifting frame 19 on the second box door 3.

[0041] The toggle member includes two plug-in posts 22 slidably plugged into the plug-in tube 21 , a connecting frame 25 disposed on the two plug-in posts 22 , and a rotating shaft 26 connecting the two connecting frames 25 ; The plug-in column 22 further includes a sliding groove 24 formed on the plug-in column 22 and engaging grooves 23 formed on both sides of the sliding groove 24 and on the plug-in column 22 .

[0042] In this embodiment, notches are designed on both sides of the lifting frame 19 for sliding with the guide block 20, and the guide block 20 is installed on the second box door 3; through this structure, the lifting frame 19 can accurately move vertically in the box body 1 to ensure stability and smooth lifting; a rack 18 is fixedly connected to one end of the lifting frame 19, and the rack 18 is meshed with the gear barrel 15; when the gear barrel 15 rotates, it can accurately control the lifting and lowering adjustment of the rack 18; the design length of the gear barrel 15 is the same as the spiral length of the spiral groove 11, so when the gear barrel 15 moves laterally, the rack 18 and the gear barrel 15 always maintain an effective meshing relationship; in this way, the gear barrel 15 can stably and evenly push the rack 18 up and down during the rotation process, ensuring the smoothness and stability of the transmission; in order to further enhance the use effect, the meshing process of the gear barrel 15 and the rack 18 can accurately transmit force, thereby realizing the precise adjustment of the lifting frame 19; The lifting frame 19 itself is also designed with a slot hole that matches the ball head 33, and the ball head 33 is set on the lifting frame 19 through a spring 32; when the ball head 33 abuts against the slot hole, the rebound force of the spring 32 sets the lifting frame 19 at a set height; the rebound force of the spring 32 ensures that the lifting frame 19 can stay firmly at the current height, avoiding accidental sliding during use, thereby improving the safety and stability of the system; in addition, the combination of the plug-in column 22 and the plug-in tube 21 is designed as an adjustable structure, the plug-in column 22 is inserted into the plug-in tube 21, and the plug-in tube 21 can be adjusted by adjusting the plug-in column 21 and the plug-in column 22. The combined length can accurately control the distance between the interference cylinder 27 and the second box door 3; this design allows the position of the interference cylinder 27 to be adjusted as needed when different types of branch switches 4 are installed to ensure that it can be accurately docked with the handle of the branch switch 4, thereby making the operation more efficient and convenient; in order to prevent unnecessary changes in the adjustment length between the plug-in cylinder 21 and the plug-in column 22, a limiter design is adopted, which can fix its state after adjusting to the appropriate length, ensuring that the position after each adjustment is always maintained stable, avoiding adverse effects caused by looseness or deviation.

[0043] See also Figures 9 to 11, as a further solution of the present invention, the limiting member includes two sliding blocks 29 slidably disposed on the insertion cylinder 21, engaging strips 30 disposed on the sliding blocks 29, pressing blocks 28 disposed on the side of the engaging strips 30 away from the sliding blocks 29, and a spring 31 disposed between the two sliding blocks 29 for controlling the distance therebetween.

[0044] The engaging strip 30 is engaged with the engaging groove 23. The minimum distance between the two pressing blocks 28 approaching each other is the same as the width of the sliding groove 24, so that when the two pressing blocks 28 are pinched, the engaging state of the engaging strip 30 with the engaging groove 23 is disengaged.

[0045] In this embodiment, when it is necessary to adjust the combined length of the insertion cylinder 21 and the insertion column 22, the user can perform a pinching operation on the two pressing blocks 28 on the same side to adjust the insertion cylinder 21; by pinching the two pressing blocks 28, in this process, the sliding block 29 can only slide in the vertical direction of the insertion cylinder 21, restricting its lateral free movement, thereby improving the stability and accuracy of the operation; During the pinching process of the pressing block 28, the spring 31 between the two pressing blocks 28 will be compressed, thereby forming a rebounding force; the rebounding force of this spring 31 is crucial for the entire adjustment process, because it not only ensures that the pressing block 28 can return to its original position, but also enables the engaging strip 30 to precisely cooperate with the engaging groove 23 after adjustment; when the pressing block 28 is successfully engaged, the combined height of the engaging strip 30 and the engaging groove 23 is exactly the same, and the engaging strip 30 just cooperates with the engaging groove 23. At this time, the engagement between the engaging strip 30 and the engaging groove 23 is disengaged, so that the insertion column 22 can easily slide and adjust within the insertion cylinder 21; through this design, the user can conveniently adjust the length of the insertion column 22 and precisely set the combined length of the insertion cylinder 21 and the insertion column 22 to meet different usage requirements; After the adjustment is completed, when the user releases the pressing block 28, the engaging strip 30 will immediately recover and re-engage into the engaging groove 23, ensuring the stable connection state between the insertion column 22 and the insertion cylinder 21 and preventing accidental loosening or slipping; this design effectively restricts the sliding of the insertion cylinder 21 within the insertion column 22, ensuring the overall stability of the system.

[0046] Using the locking power connection method of a grid-powered distribution box with a locking intelligent power connection as described above, includes the following steps: Step 1: A door magnetic switch electrically connected to the circuit breaker disposed in the box body 1 is provided on the second box door 3. When the second box door 3 is opened, the door magnetic switch is disconnected, the opening circuit is conducted, and the circuit breaker trips; Step 2: The motor 9 drives the gear cylinder 15 to move horizontally and rotate on the screw 6, and the gear cylinder 15 drives the multiple lifting frames 19 to move up and down, and through the abutment cylinder 27 to toggle, the multiple branch switches 4 inside the control box 1 are tripped and disconnected step by step; Step 3: The equipment inside the box 1 is powered off to realize the power connection operation. When the power is supplied, the second box door 3 is closed. At this time, the door magnetic switch is closed, the closing circuit is connected, and the circuit breaker allows closing; Step 4: The motor 9 moves in the reverse direction, driving the gear cylinder 15 to move horizontally and rotate. The gear cylinder 15 drives the multiple lifting frames 19 to move up and down. By moving the resistance cylinder 27, the multiple branch switches 4 inside the control box 1 are closed step by step to supply power.

[0047] The above embodiments are exemplary rather than restrictive, so the technical solutions of the present invention that can be implemented in other specific forms without departing from the spirit or basic features of the present invention are all included in the present invention.

Claims

1. A grid power distribution box with a locked intelligent power connection, comprising a box body (1), a first box door (2) and a second box door (3) rotatably mounted on the box body (1), and a plurality of branch switches (4) arranged inside the box body (1), characterized in that: The second door (3) is provided with a step-by-step locking structure, the step-by-step locking structure comprising: A driving member, the driving member being mounted on the second door (3), the driving member being provided with a gear cylinder (15), the driving member being used to drive the gear cylinder (15) to move laterally and rotate intermittently; A lifting member is mounted on the second door (3) via a guide block (20), the lifting member being connected to the gear cylinder (15), and when the gear cylinder (15) rotates, the lifting members are driven step by step to vertically lift and lower the plurality of lifting members on the second door (3), and a toggle member that can be adjusted to slide horizontally is connected to the lifting member via a limit member, and the toggle member is connected to a switch handle of the branch switch (4), and when the lifting member is lifted and lowered, the switch handles of the plurality of branch switches (4) are pushed up or pulled down step by step.

2. A grid power distribution box with locked intelligent power connection according to claim 1, characterized in that: The driving member comprises two mounting seats (5) mounted on the second door (3), a screw rod (6) rotating between the two mounting seats (5) and an intermittent mechanism, a driving component connected to the screw rod (6), and a transverse movement mechanism arranged on the screw rod (6) and connected to the gear cylinder (15); The driving component comprises a first gear (7) arranged at one end of the screw rod (6), a second gear (8) meshing with the first gear (7), and a motor (9) whose output shaft is fixed to the second gear (8); the motor (9) is mounted on the second door (3); and when the motor (9) is in operation, it is used to drive the screw rod (6) to rotate between the two mounting seats (5).

3. A grid power distribution box with locked intelligent power connection according to claim 2, characterized in that: The intermittent mechanism comprises a transmission rod (10) rotating between the two mounting seats (5), a plurality of spiral grooves (11) arranged at equal intervals on the transmission rod (10), and a straight groove (12) arranged on the transmission rod (10) so as to connect the plurality of spiral grooves (11) end to end, wherein the straight groove (12) is arranged parallel to the length direction of the transmission rod (10).

4. A grid power distribution box with locked intelligent power connection according to claim 3, characterized in that: The transverse movement mechanism comprises a sleeve (13) threadedly connected to the screw rod (6) and connecting plates (14) arranged at both ends of the sleeve (13) and slidably sleeved on the transmission rod (10); The gear cylinder (15) is placed between the two connecting plates (14), and rotatable rotating rings (16) are arranged between the two ends of the gear cylinder (15) and the two connecting plates (14), and the rotating rings (16) are used to reduce the contact friction between the gear cylinder (15) and the connecting plates (14); A convex ball (17) is fixedly connected to the inner wall of the cavity of the gear cylinder (15), and the convex ball (17) is adaptively connected to the spiral groove (11) and the straight groove (12).

5. A grid power distribution box with locked intelligent power connection according to claim 1 or 4, characterized in that: The lifting member comprises a lifting frame (19) slidably connected to the guide block (20), plug-in tubes (21) arranged on both sides of the lifting frame (19), a positioning member connected to the lifting frame (19) and mounted on the second door (3), and a rack (18) arranged on the lifting frame (19); The rack (18) is meshed with the gear cylinder (15).

6. A grid power distribution box with locked intelligent power connection according to claim 5, characterized in that: The positioning member comprises a spring leaf (32) mounted on the second door (3) and a ball head (33) arranged on the spring leaf (32); the ball head (33) is connected to a corresponding slot hole on the lifting frame (19) and is used to position the height of the lifting frame (19) on the second door (3) by enabling the ball head (33) to engage in the slot hole on the lifting frame (19) through the rebound force of the spring leaf (32).

7. A grid power distribution box with locked intelligent power connection according to claim 5, characterized in that: The toggle member comprises two plug-in posts (22) slidably plugged into the plug-in cylinder (21), a connecting frame (25) disposed on the two plug-in posts (22), and a rotating shaft (26) connecting the two connecting frames (25); It also includes a sliding groove (24) formed on the plug-in column (22) and engaging grooves (23) formed on the plug-in column (22) and located on both sides of the sliding groove (24).

8. A grid power distribution box with locked intelligent power connection according to claim 7, characterized in that: The limiting member comprises two sliding blocks (29) sliding on the plug-in cylinder (21), a locking strip (30) arranged on the sliding block (29), a pressing block (28) arranged on the locking strip (30) at a side away from the sliding block (29), and a spring (31) arranged between the two sliding blocks (29) for controlling the distance between the two sliding blocks (29).

9. A grid power distribution box with locked intelligent power connection according to claim 8, characterized in that: The engaging strip (30) is engaged with the engaging groove (23), and the minimum distance between the two pressing blocks (28) is the same as the width of the sliding groove (24), so that when the two pressing blocks (28) are squeezed together, the engaging state of the engaging strip (30) with respect to the engaging groove (23) is disengaged.

10. A method for locking power connection of a power distribution box for power grid using a locking intelligent power connection as claimed in any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: a door magnetic switch electrically connected to a circuit breaker provided in the box body (1) is provided on the second box door (3); when the second box door (3) is opened, the door magnetic switch is disconnected, the opening circuit is connected, and the circuit breaker trips; Step 2: The motor (9) drives the gear cylinder (15) to move horizontally and rotate on the screw rod (6), and the gear cylinder (15) drives the multiple lifting frames (19) to move up and down, and through the movement of the resistance cylinder (27), the multiple branch switches (4) inside the control box (1) are tripped and disconnected step by step; Step 3: The equipment inside the box (1) is powered off and the power supply operation is performed. When the power is supplied, the second box door (3) is closed. At this time, the door magnetic switch is closed, the closing circuit is connected, and the circuit breaker allows closing. Step 4: The motor (9) moves in the reverse direction, driving the gear cylinder (15) to move horizontally and rotate, and the gear cylinder (15) drives the multiple lifting frames (19) to move up and down, and through the movement of the resistance cylinder (27), the multiple branch switches (4) inside the control box (1) are closed step by step to supply power.

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