Lower door interlocking assembly of electric operating mechanism

Abstract

The utility model relates to a lower door interlocking assembly of an electric operating mechanism. Comprising a mechanism frame, a lower door interlocking rod, a lower door interlocking plate, a reset spring, an interlocking cam, a spring bolt arranged on a lower door in a linkage mode and matched with the lower door interlocking rod, an interlocking piece arranged on the mechanism frame in a sliding mode and matched with the spring bolt, and a reset compressed spring arranged between the interlocking piece and the mechanism frame. The microswitch is arranged on the mechanism frame and used for controlling on and off of a power source of the motor, the interlocking sliding plate is arranged on the mechanism frame in a sliding mode and matched with the interlocking piece, when the grounding operation shaft rotates to an opening position, the interlocking cam drives the lower door interlocking plate to act, the lower door interlocking plate drives the lower door interlocking rod to be inserted into the spring bolt in a penetrating mode, and the lower door interlocking plate drives the lower door interlocking rod to move. And the lower door interlocking rod and the spring bolt are locked. The utility model has the advantages of simple structure, stable and reliable performance, reliable interlocking and convenient assembly.

Description

Technical Field

[0001] This utility model relates to an operating mechanism, specifically to a lower door interlock component of an electric operating mechanism. Background Technology

[0002] The five-prevention interlocking operating mechanism is widely used in high-voltage switchgear, ring main units, and other power equipment to ensure that no misoperation occurs during various operations, thus guaranteeing the safe operation of the power system and the safety of personnel. The five-prevention functions mainly include: 1. Preventing accidental opening and closing of circuit breakers: Ensuring that circuit breakers can only be opened and closed in the correct state, avoiding equipment damage or safety accidents caused by misoperation. 2. Preventing opening and closing of disconnecting switches under load: Before operating the disconnecting switch, it must be ensured that the circuit breaker is in the open state to avoid operation under load. 3. Preventing connecting (closing) grounding wires (grounding switches) while energized: Before closing the grounding switch, it must be ensured that the equipment is de-energized to avoid operation while energized. 4. Preventing energization while grounding wires (grounding switches) are connected: Ensuring that the circuit breaker cannot be energized when the grounding switch is closed, avoiding grounding of equipment while energized. 5. Preventing accidental entry into energized areas: When equipment is energized, preventing personnel from accidentally entering dangerous areas to ensure personnel safety. The existing five-proof interlocking operating mechanism has a relatively complex lower door interlocking component structure design, which has defects such as unreliable performance, unreliable interlocking, and cumbersome assembly. Summary of the Invention

[0003] The purpose of this utility model is to overcome the defects of the prior art and provide a lower door interlock component of an electric operating mechanism that is simple in structure, stable and reliable in performance, reliable in interlocking, and convenient in assembly.

[0004] To achieve the above objectives, this utility model employs a lower door interlock assembly for an electric operating mechanism, comprising a frame, a lower door interlock rod slidably mounted on the frame, a lower door interlock plate mounted on one end of the lower door interlock rod, a return spring mounted between the lower door interlock plate and the frame, an interlock cam linked to a grounding operating shaft and used to drive the lower door interlock plate, a latch linked to the lower door and cooperating with the lower door interlock rod, an interlock plate slidably mounted on the frame and cooperating with the latch, a return spring mounted between the interlock plate and the frame, a micro switch mounted on the frame and used to control the on / off state of the motor power supply, and an interlock sliding plate slidably mounted on the frame and cooperating with the interlock plate. When the grounding operating shaft rotates to the open position, the interlock cam drives the lower door interlock plate to move, and the lower door interlock plate drives the lower door interlock rod to insert into the latch, thus locking the lower door interlock rod and the latch.

[0005] The beneficial effects of the above structure are as follows: When the grounding operating shaft rotates to the open position, the grounding operating shaft drives the lower door interlock plate to move via the interlocking cam. The lower door interlock plate then drives the lower door interlock rod to move, and the lower door interlock rod engages with the lower door's latch, thus preventing the lower door from opening. When the grounding operating shaft rotates to the closed position, the lower door interlock rod resets, unlocking the latch and allowing the lower door to open. This lower door interlock assembly has a simple structural design and adopts a modular design, making assembly more convenient and interlocking more reliable. Therefore, the lower door interlock assembly of this electric operating mechanism has the advantages of simple structure, stable and reliable performance, reliable interlocking, and convenient assembly.

[0006] Specifically, the interlocking plate is provided with a locking groove that mates with the interlocking slide plate. One end of the interlocking slide plate is provided with a limiting piece that mates with the locking groove. When the interlocking slide plate is in the electric sliding position, the limiting piece moves with the interlocking slide plate and engages in the locking groove, thus locking the interlocking slide plate and the interlocking plate. When the lower door is closed, the latch drives the interlocking plate to move, separating the locking groove of the interlocking plate from the limiting piece, thus unlocking the interlocking slide plate and the limiting piece. When the lower door is opened, the locking groove of the interlocking plate engages with the limiting piece of the interlocking slide plate, locking the interlocking slide plate in the electric position. At this time, the electric operating mechanism cannot be manually operated. When the lower door is closed, the latch drives the interlocking plate and the interlocking slide plate to unlock, allowing the interlocking slide plate to slide to the manual operation position, thus improving the safety performance of the electric operating mechanism.

[0007] Specifically, when the lower door is closed, the locking tongue abuts against the interlocking plate. The interlocking plate moves with the locking tongue and triggers a micro switch, which then connects the motor power supply. When the lower door is closed, the interlocking plate triggers the micro switch, which in turn connects the motor power supply, activating the electric operation function. This ensures that the electric operating mechanism can only be operated when the lower door is closed, thus improving the safety performance of the electric operating mechanism.

[0008] Specifically, the mechanism frame is equipped with a manual / automatic switching micro switch that cooperates with the interlocking slide plate. One end of the interlocking slide plate has a trigger piece that cooperates with the manual / automatic switching micro switch. When the interlocking slide plate slides to the electric position, it blocks the grounding operation hole and the isolation operation hole of the mechanism frame. The trigger piece moves with the interlocking slide plate and triggers the manual / automatic switching micro switch, which connects the motor power supply. When the interlocking slide plate slides to the electric position, it blocks the grounding operation hole and the isolation operation hole of the mechanism frame, and the manual operation function is off. Conversely, when the interlocking slide plate slides to the manual operation position, it opens the grounding operation hole and the isolation operation hole, allowing manual operation. The manual / automatic switching micro switch cuts off the motor power supply, and the electric operation function is off, thus realizing the switching between manual and electric operation.

[0009] Specifically, the interlocking slide plate is equipped with a manual / automatic switching shaft, and the front panel of the mechanism frame is provided with a manual / automatic switching hole that mates with the manual / automatic switching shaft, with the shaft inserted into the hole. By using the manual / automatic switching shaft on the interlocking slide plate, the user can switch between manual and electric operation of the electric operating mechanism, making operation more convenient.

[0010] Specifically, a U-shaped support is provided within the frame corresponding to the lower door interlock rod. The U-shaped support has a guide hole that mates with the lower door interlock rod. One end of the lower door interlock rod passes through the guide hole, forming a sliding connection between the lower door interlock rod and the U-shaped support. The lower door interlock rod is slidably positioned within the guide hole of the U-shaped support, facilitating the assembly of the lower door interlock rod with the frame and ensuring reliable operation of the lower door interlock rod on the frame, thereby improving the operational reliability of the lower door interlock assembly. Attached Figure Description

[0011] Figure 1 This is a perspective view of the electric operating mechanism according to an embodiment of the present utility model.

[0012] Figure 2 This is an exploded view of the electric operating mechanism according to an embodiment of the present invention. Detailed Implementation

[0013] like Figures 1-2As shown, this utility model embodiment is a lower door interlock assembly of an electric operating mechanism, including a frame 10, a lower door interlock rod 11 slidably disposed on the frame 10, a lower door interlock plate 12 disposed on one end of the lower door interlock rod 11, a return spring 13 disposed between the lower door interlock plate 12 and the frame 10, an interlock cam 15 linked to a grounded operating shaft 14 and used to drive the lower door interlock plate 12, a latch 16 linked to the lower door and cooperating with the lower door interlock rod 11, and a slidably disposed on the frame 10 and cooperating with the latch 16. The system includes a 6-phase interlocking plate 17, a reset spring 18 disposed between the interlocking plate 17 and the mechanism frame 10, a micro switch 20 disposed on the mechanism frame 10 and used to control the power supply of the motor 19, and an interlocking slide plate 21 slidably disposed on the mechanism frame 10 and cooperating with the interlocking plate 17. When the grounding operating shaft 14 rotates to the open position, the interlocking cam 15 drives the lower door interlocking plate 12 to move, and the lower door interlocking plate 12 drives the lower door interlocking rod 11 to pass through the lock tongue 16, thus forming a lock between the lower door interlocking rod 11 and the lock tongue 16. The interlocking plate 17 is provided with a locking groove 171 that cooperates with the interlocking slide plate 21. One end of the interlocking slide plate 21 is provided with a limiting piece 211 that cooperates with the locking groove 171. When the interlocking slide plate 21 is in the electric sliding position, the limiting piece 211 moves with the interlocking slide plate 21 and engages with the locking groove 171, thus locking the interlocking slide plate 21 and the interlocking plate 17. When the lower door is closed, the latch 16 drives the interlocking plate 17 to move, separating the locking groove 171 of the interlocking plate 17 from the limiting piece 211, thereby unlocking the interlocking slide plate 21 and the limiting piece 17. When the lower door is opened, the locking groove of the interlocking plate engages with the limiting piece of the interlocking slide plate, locking the interlocking slide plate in the electric position. At this time, the electric operating mechanism cannot be manually operated. When the lower door is closed, the latch drives the interlocking plate and the interlocking slide plate to unlock, allowing the interlocking slide plate to slide to the manual operation position, thus improving the safety performance of the electric operating mechanism. When the lower door is closed, the latch 16 abuts against the interlocking plate 17. The interlocking plate 17 moves with the latch 16 and triggers the micro switch 20, which connects the power supply to the motor 19. When the lower door is closed, the interlocking plate triggers the micro switch, which connects the power supply to the motor, and the electric operation function is activated. This ensures that the electric operating mechanism can only be operated when the lower door is closed, which helps to improve the safety performance of the electric operating mechanism.

[0014] like Figure 2As shown, the mechanism frame 10 is equipped with a manual / automatic switching micro switch 22 that cooperates with the interlocking slide plate 21. One end of the interlocking slide plate 21 has a trigger piece 212 that cooperates with the manual / automatic switching micro switch 22. When the interlocking slide plate 21 slides to the electric position, it blocks the grounding operation hole 101 and the isolation operation hole 102 of the mechanism frame 10. The trigger piece 212 moves with the interlocking slide plate 21 and triggers the manual / automatic switching micro switch 22, which connects the power supply to the motor 19. When the interlocking slide plate slides to the electric position, it blocks the grounding operation hole and the isolation operation hole of the mechanism frame, and the manual operation function is off. Conversely, when the interlocking slide plate slides to the manual operation position, it opens the grounding operation hole and the isolation operation hole, allowing manual operation. The manual / automatic switching micro switch cuts off the motor power supply, and the electric operation function is off, thus realizing the switching between manual and electric operation. The interlocking slide plate 21 is equipped with a manual / automatic switching shaft 23, and the front panel 100 of the mechanism frame 10 is equipped with a manual / automatic switching hole 1001 that cooperates with the manual / automatic switching shaft 23. The manual / automatic switching shaft 23 is inserted into the manual / automatic switching hole 1001. With the manual / automatic switching shaft on the interlocking slide plate, the user can switch between manual and electric operation of the electric operating mechanism by moving the slide plate using the manual / automatic switching shaft, making operation more convenient. A U-shaped support member 24 is provided inside the mechanism frame 10 corresponding to the lower door interlocking rod 11. The U-shaped support member 24 is equipped with a guide hole 241 that cooperates with the lower door interlocking rod 11. One end of the lower door interlocking rod 11 is inserted into the guide hole 241, forming a sliding connection between the lower door interlocking rod 11 and the U-shaped support member 24. The lower door interlock rod is slidably installed in the guide hole of the U-shaped support, which facilitates the assembly of the lower door interlock rod with the mechanism frame and ensures that the lower door interlock rod can reliably move on the mechanism frame, thereby improving the working reliability of the lower door interlock assembly.

[0015] When the grounding operating shaft rotates to the open position, it drives the lower door interlock plate via the interlocking cam. The lower door interlock plate then drives the lower door interlock rod, which engages with the lower door's latch, preventing the lower door from opening. When the grounding operating shaft rotates to the closed position, the lower door interlock rod resets, unlocking the latch and allowing the lower door to open. This lower door interlock assembly features a simple and modular design, making assembly easier and interlocking more reliable. Therefore, this electric operating mechanism's lower door interlock assembly offers advantages such as simple structure, stable and reliable performance, reliable interlocking, and convenient assembly.

Claims

1. A lower door interlock assembly for an electrically operated mechanism, characterized in that... The device includes a frame, a lower door interlocking rod slidably mounted on the frame, a lower door interlocking plate mounted on one end of the lower door interlocking rod, a return spring mounted between the lower door interlocking plate and the frame, an interlocking cam linked to the grounding operating shaft and used to drive the lower door interlocking plate, a latch linked to the lower door and cooperating with the lower door interlocking rod, an interlocking plate slidably mounted on the frame and cooperating with the latch, a return spring mounted between the interlocking plate and the frame, a micro switch mounted on the frame and used to control the on / off state of the motor power supply, and an interlocking sliding plate slidably mounted on the frame and cooperating with the interlocking plate. When the grounding operating shaft rotates to the open position, the interlocking cam drives the lower door interlocking plate to move, and the lower door interlocking plate drives the lower door interlocking rod to insert into the latch, thus locking the lower door interlocking rod and the latch.

2. The lower door interlock assembly of the electric operating mechanism according to claim 1, characterized in that: The interlocking plate is provided with a locking groove that cooperates with the interlocking slide plate. One end of the interlocking slide plate is provided with a limiting piece that cooperates with the locking groove. When the interlocking slide plate is in the electric sliding position, the limiting piece moves with the interlocking slide plate and engages in the locking groove, thus locking the interlocking slide plate and the interlocking plate. When the lower door is closed, the lock tongue drives the interlocking plate to move, the locking groove of the interlocking plate separates from the limiting piece, and the interlocking slide plate and the limiting piece are unlocked.

3. The lower door interlock assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: When the lower door is closed, the locking tongue abuts against the interlocking plate, and the interlocking plate moves with the locking tongue and triggers the micro switch, which then connects the motor power supply.

4. The lower door interlock assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: The mechanism frame is equipped with a manual / automatic switching micro switch that cooperates with the interlocking slide plate. One end of the interlocking slide plate has a trigger piece that cooperates with the manual / automatic switching micro switch. When the interlocking slide plate slides to the electric position, the interlocking slide plate blocks the grounding operation hole and isolation operation hole of the mechanism frame. The trigger piece moves with the interlocking slide plate and triggers the manual / automatic switching micro switch, which connects the motor power supply.

5. The lower door interlock assembly of the electric operating mechanism according to claim 4, characterized in that: The interlocking slide plate is equipped with a manual / automatic switching shaft, and the front panel of the mechanism frame is equipped with a manual / automatic switching hole that cooperates with the manual / automatic switching shaft. The manual / automatic switching shaft is inserted into the manual / automatic switching hole.

6. The lower door interlock assembly of the electric operating mechanism according to claim 1 or 2, characterized in that: A U-shaped support is provided inside the frame corresponding to the lower door interlocking rod. The U-shaped support has a guide hole that cooperates with the lower door interlocking rod. One end of the lower door interlocking rod is inserted into the guide hole, forming a sliding connection between the lower door interlocking rod and the U-shaped support.

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