Door plate interlocking device with emergency unlocking function

Abstract

The utility model relates to the field of high-voltage electrical equipment, in particular to a door plate interlocking device with an emergency unlocking function, which comprises a door plate, a door lock pressing plate, a door lock hook, a lock rod, a triangular matching locking piece and an emergency unlocking bolt, the cross point of the triangular matching locking piece is rotationally connected to the lower portion of the mounting plate through a torsional spring, the upper end of the triangular matching locking piece is matched with the door lock pressing plate, the lower end of the triangular matching locking piece is connected with an operation hole blocking plate, and the operation hole blocking plate penetrates through the mounting plate and slidably covers the grounding switch operation hole; the emergency unlocking bolt penetrates through the door plate and is connected with the bottom of the door lock pressing plate. The interlocking and locking device is high in interlocking and locking reliability, strong in logicality and good in safety, has an emergency unlocking function, improves timeliness of field processing, provides powerful guarantee for safe and stable operation of an electric power system, and also provides a novel interlocking implementation scheme for industrial manufacturers and electric power consumers.

Description

Technical Field

[0001] The utility model relates to the field of high-voltage electrical equipment, in particular to a door panel interlocking device with an emergency unlocking function. Background Technique

[0002] In current power equipment and distribution systems, as a key component, the fixed cabinet's safety and reliability are directly related to the stable operation of the power system and the safety of operators. Traditional fixed cabinet designs often focus on functionality and space utilization, but there are certain limitations in safety protection, especially for the isolation and protection of live parts. For example, the front door of the fixed cabinet product can be touched to the live part when the front door is opened, and the front door uses an electromagnetic lock to lock the cabinet door, and at the same time does not have a reverse locking function, there are certain safety hazards. In order to ensure that the product has a perfect "five-prevention" interlocking function, a cabinet door interlocking device with positive and negative interlocks needs to be designed. Content of the Utility Model

[0003] Aiming at the problem that there are safety hazards in the front door of the fixed cabinet in the prior art due to the lack of reverse locking function, the utility model provides a door panel interlocking device with an emergency unlocking function, aiming to ensure the safe operation of the switch cabinet in the non-energized state and the quick unlocking in case of emergency.

[0004] The utility model is realized by the following technical solutions:

[0005] A door panel interlocking device with an emergency unlocking function includes a door panel, a door lock pressure plate, a door lock hook, a lock rod, a triangular cooperation locking member and an emergency unlocking bolt. The door lock pressure plate is connected to the door panel, and the door lock hook is connected to the door lock pressure plate; the lock rod is slidably arranged above the mounting plate, the mounting plate is fixed to the side of the switch operating plate, the intersection of the triangular cooperation locking member is rotatably connected to the lower part of the mounting plate by a torsion spring, the upper end of the triangular cooperation locking member cooperates with the door lock pressure plate, the lower end of the triangular cooperation locking member is connected with an operation hole plug plate, and the operation hole plug plate penetrates through the mounting plate and slides to cover the grounding switch operation hole; the emergency unlocking baffle is located on the side opposite to the door lock hook, and the emergency unlocking bolt penetrates through the door panel and is connected to the bottom of the door lock pressure plate;

[0006] When the switch cabinet is not energized, the grounding switch is in the closing position, the lock rod is far away from the door lock hook, and the triangular plug plate rotates to drive the operation hole plug plate to block the grounding switch operation hole.

[0007] Preferably, both the door lock pressure plate and the mounting plate are formed by bending strip-shaped plates.

[0008] Preferably, the door lock pressing plate includes a first part, a second part, and a third part connected in sequence. The first part and the third part are oppositely arranged at both ends of the second part, and the first part and the third part are respectively located on both sides of the plate surface of the second part. The bottom of the first part is fixedly connected to the door panel. The plate surface of the second part close to the first part is fixedly connected to the lower part of the door lock hook. The third part is engaged with the upper end of the triangular mating locking member. The emergency unlocking bolt passes through the door panel and is threadedly connected to the third part.

[0009] Preferably, the bolt column of the emergency unlocking bolt penetrates through the plate surface of the third part.

[0010] Preferably, it further includes an emergency unlocking baffle. The emergency unlocking baffle is located on the side of the door panel opposite to the door lock hook. The upper part of the emergency unlocking baffle is rotatably connected to the door panel, and the lower part covers the bolt head of the emergency unlocking bolt.

[0011] Preferably, a light-emitting mark is arranged on the outer side of the emergency unlocking baffle.

[0012] Preferably, the mounting plate includes a first vertical plate, a transverse plate, and a second vertical plate connected in sequence. The first vertical plate and the second vertical plate are oppositely arranged at both ends of the transverse plate. The bottom of the first vertical plate is fixed to the door frame. The triangular mating locking member is installed on the first vertical plate. The lock rod is slidably arranged on the second vertical plate.

[0013] Preferably, the triangular mating locking member includes two triangular gussets arranged in parallel at intervals. A first connecting rod, a second connecting rod, and a third connecting rod are arranged between the two triangular gussets. The first connecting rod is used to cooperate with the third part. The second connecting rod is hollow. A rotating shaft is arranged in the second connecting rod. A torsion spring is sleeved on the rotating shaft. The third connecting rod is connected to the operation hole plugging plate.

[0014] Preferably, the triangular gusset includes a first hypotenuse and a second hypotenuse connected. The ends of the first slant plate and the second hypotenuse far from the converging place are both set as arcs.

[0015] Preferably, a long slot is formed on the first hypotenuse. The third connecting rod is slidably arranged in the long slot.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] The utility model discloses a door panel interlocking device with an emergency unlocking function, in which a locking rod cooperates with a door lock hook to lock the door panel, and is used to prevent the door panel from being opened when the power is on. When the switch cabinet is not powered on, the grounding switch is in the closed position, and the locking rod is away from the door lock hook on the door panel, so that the positive interlocking of the door panel is realized. At this time, the triangular matching locking piece rotates under the drive of the coil spring, and pushes the operating hole blocking plate to move to block the operating hole of the grounding switch, so as to prevent the switch from being opened and closed. At this time, the switch cabinet can be repaired. When the maintenance is completed, the door panel is closed, and the door lock pressure plate presses the upper end of the triangular matching locking piece to push the triangular matching locking piece to rotate in the opposite direction, and drives the operating hole blocking plate to leave the grounding switch hole. At this time, the grounding switch can be operated to open the switch, and the power supply operation is realized, and the requirements of "preventing accidental entry into the energized interval" in the five-prevention interlocking requirements and the functions of positive and reverse interlocking are realized.

[0018] At the same time, an emergency unlocking bolt is set. In an emergency state (such as an accident, etc.), removing the emergency unlocking bolt can cause the door lock pressure plate and the door lock hook to fall off automatically, thereby releasing the above-mentioned interlocking and opening the switch cabinet, which helps to improve the timeliness of on-site processing.

[0019] Further, the layout of the first part, the second part and the third part is used to ensure the stable connection of the door lock hook and the cooperation with the triangular matching locking member.

[0020] Furthermore, the emergency unlocking baffle is rotatably connected to the door panel and covers the bolt head of the emergency unlocking bolt, which prevents unauthorized operation and increases the safety of operation.

[0021] Furthermore, the luminous signs provide workers with clear instructions in low-light or nighttime environments, improving the convenience and safety of operations.

[0022] Furthermore, the first bevel and the second bevel are configured in an arc shape to ensure that the triangular mating locking member rotates stably and avoid jamming and friction during the rotation process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of a door panel interlocking device with an emergency unlocking function of the utility model when the door panel is closed;

[0024] Figure 2 It is a schematic diagram of another perspective of a door panel interlocking device with an emergency unlocking function of the utility model when the door panel is closed;

[0025] Figure 3 It is a schematic diagram of a door panel interlocking device with an emergency unlocking function of the utility model when the door panel is opened;

[0026] Figure 4It is a schematic diagram of another perspective when the door panel of an interlocking device for a door panel with an emergency unlocking function of the present utility model is opened;

[0027] Figure 5 It is a schematic diagram of a triangular cooperation locking member in an interlocking device for a door panel with an emergency unlocking function of the present utility model;

[0028] Figure 6 It is a schematic diagram of an emergency unlocking baffle in an interlocking device for a door panel with an emergency unlocking function of the present utility model;

[0029] Figure 7 It is a schematic diagram of an emergency unlocking bolt and an emergency unlocking baffle in an interlocking device for a door panel with an emergency unlocking function of the present utility model.

[0030] In the figure, 1. Door panel; 2. Door lock pressure plate; 3. Door lock hook; 4. Lock rod; 5. Triangular gusset plate; 6. Rotating shaft; 7. Operating hole plug plate; 8. Earthing switch operating hole; 9. Emergency unlocking baffle; 10. Emergency unlocking bolt; 11. First part; 12. Second part; 13. Third part; 14. First vertical plate; 15. Horizontal plate; 16. Second vertical plate; 17. First hypotenuse; 18. Second hypotenuse; 19. Long slot; 20. First connecting rod; 21. Second connecting rod; 22. Third connecting rod. Detailed implementation mode

[0031] The following further elaborates on the present utility model in detail in combination with specific embodiments, which is an explanation rather than a limitation of the present utility model.

[0032] The present utility model discloses an interlocking device for a door panel 1 with an emergency unlocking function. Referring to Figure 1 、 2 、3, 4, it includes a door panel 1, a door lock pressure plate 2, a door lock hook 3, a lock rod 4, a triangular cooperation locking member, an emergency unlocking bolt 10 and an emergency unlocking baffle 9. The door lock pressure plate 2 is connected to the door panel 1, and the door lock hook 3 is connected to the door lock pressure plate 2; the lock rod 4 is slidably arranged above the mounting plate, the mounting plate is fixed to the side of the switch operating plate, the intersection point of the triangular cooperation locking member is rotationally connected to the lower part of the mounting plate by a torsion spring, the upper end of the triangular cooperation locking member cooperates with the door lock pressure plate 2, and the lower end of the triangular cooperation locking member is connected with an operating hole plug plate 7, and the operating hole plug plate 7 penetrates through the mounting plate and slidably covers the earthing switch operating hole 8.

[0033] When the switch cabinet is de-energized, the earthing switch is in the closing position, the lock rod 4 is far away from the door lock hook 3, and the triangular plug plate rotates to drive the operating hole plug plate 7 to block the earthing switch operating hole 8.

[0034] The door lock pressing plate 2 and the mounting plate are both formed by bending strip-shaped plates. Among them, the door lock pressing plate 2 includes a first part 11, a second part 12, and a third part 13 that are connected in sequence. The first part 11 and the third part 13 are oppositely arranged at both ends of the second part 12, and the first part 11 and the third part 13 are respectively located on both sides of the plate surface of the second part 12. The bottom of the first part 11 is fixedly connected to the door panel 1, the plate surface of the second part 12 close to the first part 11 is fixedly connected to the lower part of the door lock hook 3, the third part 13 is matched with the upper end of the triangular cooperation locking part, the emergency unlocking bolt 10 passes through the door panel 1 and is threadedly connected to the third part 13, and the bolt column of the emergency unlocking bolt 10 penetrates through the plate surface of the third part 13.

[0035] The mounting plate includes a first vertical plate 14, a transverse plate 15, and a second vertical plate 16 that are connected in sequence. The first vertical plate 14 and the second vertical plate 16 are oppositely arranged at both ends of the transverse plate 15. The bottom of the first vertical plate 14 is fixed to the door frame, the triangular cooperation locking part is installed on the first vertical plate 14, and the lock rod 4 is slidably arranged on the second vertical plate 16.

[0036] Refer to Figure 5 , the triangular cooperation locking part includes two triangular gussets 5 arranged in parallel at intervals. The first connecting rod, the second connecting rod, and the third connecting rod are arranged between the two triangular gussets 5, and the first connecting rod is used to cooperate with the third part 13. The second connecting rod is hollow, the rotating shaft 6 is arranged in the second connecting rod, the torsion spring is sleeved on the rotating shaft 6, and the third connecting rod is connected to the operation hole plugging plate 7. Among them, the triangular gusset 5 includes a first inclined side 17 and a second inclined side 18 that are connected. The ends of the first inclined plate and the second inclined side 18 far from the confluence are both set to be arc-shaped. A long groove 19 is opened on the first inclined side 17, and the third connecting rod is slidably arranged in the long groove 19. As one of the core components of the interlocking device, the triangular cooperation locking part adopts two triangular gussets 5 arranged in parallel at intervals and is interconnected through the first, second, and third connecting rods to form a stable and flexible structure. The first connecting rod is closely matched with the third part 13 of the door lock pressing plate 2 to ensure the firm locking of the door panel 1 in the closed state. The design of the rotating shaft 6 and the torsion spring in the second connecting rod enables the triangular cooperation locking part to rotate flexibly when subjected to external force and can quickly reset to maintain the locked state. The third connecting rod is connected to the operation hole plugging plate 7 to realize the plugging function of the grounding switch operation hole 8 and effectively prevent misoperation.

[0037] Refer to Figure 6 , 7, the emergency unlocking baffle 9 is located on the side of the door panel 1 opposite to the door lock hook 3. The upper part of the emergency unlocking baffle 9 is rotatably connected to the door panel 1, and the lower part covers the bolt head of the emergency unlocking bolt 10. A luminous mark is provided on the outer side of the emergency unlocking baffle 9. The design of the emergency unlocking baffle 9 further enhances the operation safety. Its upper part is rotatably connected to the door panel 1, and the lower part covers the bolt head of the emergency unlocking bolt 10, preventing unauthorized personnel from randomly operating the emergency unlocking mechanism. The luminous mark on the outer side of the emergency unlocking baffle 9 provides an obvious visual hint, facilitating quickly finding the unlocking position in an emergency.

[0038] In this utility model, the lock rod 4 cooperates with the door lock hook 3 to realize the opening and closing of the door panel 1. Under normal live conditions, the lock rod 4 is in the extended position. The lock rod 4 is inserted into the door lock hook 3 to lock the door panel 1 and prevent the front door from being opened under live conditions; when the switch cabinet is de-energized, the earthing switch is in the closed position, and the lock rod 4 is in the open position, then the door panel 1 can be opened, realizing the positive interlock of the door panel 1. At the same time, the triangular gusset plate 5 rotates leftward through the torsion spring on the rotating shaft 6, driving the operation hole plug 7 to move leftward to block the earthing switch operation hole 8, preventing the earthing switch from being switched on and off, and enabling maintenance operations to be carried out on the switch cabinet;

[0039] After the maintenance operation is completed and the door panel 1 is closed, the door lock pressure plate 2 presses the triangular mating locking part to rotate, driving the plug 7 of the earthing switch operation hole 8 to move rightward to open the earthing switch operation hole 8, enabling the earthing switch to be switched off for power transmission operation; realizing the requirement of "preventing entry into the live compartment" in the five-prevention interlock requirements and the functions of positive and reverse interlocks.

[0040] When it is necessary to unlock the door panel 1 emergently, only need to toggle the emergency unlocking baffle 9 and then remove the emergency unlocking bolt 10. At this time, the door lock pressure plate 2 and the door lock hook 3 will naturally fall off, and the above interlock can be released.

[0041] This utility model has high reliability, strong logic and good safety in interlock and locking; clearance fit locking is adopted between the interlock parts, extending the service life of the interlock. The cabinet door panel 1 has an emergency unlocking function, improving the timeliness of on-site handling, providing a strong guarantee for the safe and stable operation of the power system, and also providing a new interlock implementation scheme for industry manufacturers and power users.

[0042] The above are only the preferred embodiments of this utility model and are not used to limit the technical solutions of this utility model in any way. Those skilled in the art should understand that without departing from the spirit and principle of this utility model, the technical solutions can be modified and replaced simply in several aspects, and these modifications and replacements also fall within the protection scope covered by the claims.

Claims

1. A door panel (1) interlock device with an emergency unlocking function, characterized in that, It includes a door panel (1), a door lock pressure plate (2), a door lock hook (3), a lock rod (4), a triangular mating locking member, and an emergency unlocking bolt (10). The door lock pressure plate (2) is connected to the door panel (1), and the door lock hook (3) is connected to the door lock pressure plate (2). The lock rod (4) is slidably arranged above the mounting plate, the mounting plate is fixed to the side of the switch operating panel, the intersection of the triangular mating locking member is rotatably connected to the lower part of the mounting plate by a torsion spring, the upper end of the triangular mating locking member cooperates with the door lock pressure plate (2), the lower end of the triangular mating locking member is connected with an operation hole plug plate (7), and the operation hole plug plate (7) passes through the mounting plate and slidably covers the earthing switch operation hole (8). The emergency unlocking bolt (10) passes through the door panel (1) and is connected to the bottom of the door lock pressure plate (2). When the switch cabinet is de-energized, the earthing switch is in the closing position, the lock rod (4) is away from the door lock hook (3), and the triangular plug plate rotates to drive the operation hole plug plate (7) to block the earthing switch operation hole (8).

2. The door panel (1) interlock device with an emergency unlocking function according to claim 1, characterized in that, Both the door lock pressure plate (2) and the mounting plate are formed by bending strip-shaped plates.

3. The door panel (1) interlock device with an emergency unlocking function according to claim 1, characterized in that, The door lock pressure plate (2) includes a first part (11), a second part (12), and a third part (13) connected in sequence. The first part (11) and the third part (13) are oppositely arranged at both ends of the second part (12), and the first part (11) and the third part (13) are respectively located on both sides of the plate surface of the second part (12). The bottom of the first part (11) is fixedly connected to the door panel (1), the plate surface of the second part (12) close to the first part (11) is fixedly connected to the lower part of the door lock hook (3), the third part (13) cooperates with the upper end of the triangular mating locking member, and the emergency unlocking bolt (10) passes through the door panel (1) and is threadedly connected to the third part (13).

4. The door panel (1) interlock device with an emergency unlocking function according to claim 3, characterized in that, The bolt column of the emergency unlocking bolt (10) passes through the plate surface of the third part (13).

5. The door panel (1) interlock device with an emergency unlocking function according to claim 3, characterized in that, It further includes an emergency unlocking baffle (9). The emergency unlocking baffle (9) is located on the side of the door panel (1) opposite to the door lock hook (3). The upper part of the emergency unlocking baffle (9) is rotatably connected to the door panel (1), and the lower part covers the bolt head of the emergency unlocking bolt (10).

6. The door panel (1) interlock device with an emergency unlocking function according to claim 5, characterized in that A luminous mark is arranged on the outer side of the emergency unlocking baffle (9).

7. The door panel (1) interlock device with an emergency unlocking function according to claim 3, characterized in that, The mounting plate includes a first vertical plate (14), a transverse plate (15), and a second vertical plate (16) connected in sequence. The first vertical plate (14) and the second vertical plate (16) are oppositely arranged at both ends of the transverse plate (15). The bottom of the first vertical plate (14) is fixed to the door frame, the triangular mating locking member is installed on the first vertical plate (14), and the lock rod (4) is slidably arranged on the second vertical plate (16).

8. The door panel (1) interlock device with an emergency unlocking function according to claim 3, characterized in that, The triangular mating locking member includes two triangular gussets (5) arranged in parallel at intervals. A first connecting rod, a second connecting rod, and a third connecting rod are arranged between the two triangular gussets (5). The first connecting rod is used to cooperate with the third part (13), the second connecting rod is hollow, a rotating shaft (6) is arranged in the second connecting rod, a torsion spring is sleeved on the rotating shaft (6), and the third connecting rod is connected to the operation hole plug plate (7).

9. The door panel (1) interlocking device with an emergency unlocking function according to claim 8, characterized in that, The triangular angle plate (5) includes a connected first hypotenuse (17) and a second hypotenuse (18), and the ends of the first inclined plate and the second hypotenuse (18) far from the confluence are both set to be arc-shaped.

10. The door panel (1) interlocking device with an emergency unlocking function according to claim 9, characterized in that, A long groove (19) is formed on the first hypotenuse (17), and the third connecting rod is slidably arranged in the long groove (19).

Images