A ring main unit based on the mechanism room panel mechanical locking of grounding switch linkage

Abstract

The utility model belongs to the electric switchgear ring main unit technical field discloses a kind of mechanism room panel mechanical locking's ring main unit based on grounding switch linkage. The ring main unit includes: mechanism room inside installation controls the switch inside the switch and realizes closing, opening and grounding, and completes the isolation mechanism of mechanism room panel assembly locking, unlocking;The isolation mechanism is by interlock device component, lower cabinet door interlock component, grounding operation shaft, grounding shaft interlock plate, camshaft, isolation shaft interlock plate, isolation operation shaft and are assembled together by fixed connection form.The utility model entire interlock device does not rely on electrical component and software program, adopts full mechanical structure, and strong anti-interference ability, adapts to the inside electromagnetic and environmental working condition of ring main unit, long in service life, high reliability, maintenance is simple.

Description

Technical Field

[0001] This utility model belongs to the technical field of ring main units for power switchgear, and particularly relates to a ring main unit with mechanical interlocking of the panel based on grounding switch linkage mechanism. Background Technology

[0002] Ring main units (RNBs), as key equipment in power distribution networks, are widely used in power distribution and control. Their safety is directly related to the stable operation of the power grid and the personal safety of maintenance personnel. The mechanism compartment is the core of the RNB, housing operating mechanisms such as disconnect switches and grounding switches. To prevent misoperation by non-professionals or unauthorized personnel, the current standard design includes operating holes for the disconnect switches and grounding switches on the mechanism compartment panel, with padlocks installed at the corresponding locations for locking via electric padlocks.

[0003] Currently, the connection between the control panel and the cabinet frame is generally fixed using conventional standard parts such as screws and hinges. This fixing method only provides simple physical isolation, and its opening and closing state has no mechanical or logical connection with the actual opening and closing position of the internal operating mechanism (especially the grounding switch).

[0004] Based on the above analysis, the problems and shortcomings of the existing technology are as follows: Safety features are practically nonexistent: the existing padlocks only lock the operating holes, not the entire panel. Anyone with common tools (such as screwdrivers and wrenches) can easily disassemble the panel fasteners and directly access components such as the high-voltage disconnect switch, posing a significant risk of electric shock. The so-called "five-proof" interlocking system is severely lacking in this critical aspect.

[0005] Unable to enforce logical interlocking: The management of power padlocks relies on the self-discipline of personnel and adherence to operating procedures, which is a form of "soft" management. In practice, situations such as missed locks, key borrowing, or even forced damage to padlocks may occur, making it technically impossible to enforce the core safety logic that "the control panel can only be opened after the grounding switch is closed."

[0006] The operation and maintenance process is inefficient and risky: During inspection and maintenance, maintenance personnel must first test for electricity and connect the grounding wire before removing the panel. However, removing the panel itself is a high-risk action because it is impossible to visually and mechanically confirm that the grounding switch has reliably closed and is providing protection before opening the panel. This relies on the skills and sense of responsibility of the personnel, leaving potential safety hazards.

[0007] Meanwhile, the existing core industry's inability to solve the following difficulties is: how to achieve a mandatory and insurmountable interlock from a mechanical structure perspective to ensure that the opening authority of the mechanism room panel is strictly bound to the closed state of the grounding switch. That is, the mechanism room panel can only be opened when the grounding switch is reliably closed, ensuring that the downstream line is de-energized and the grounding is safe; and when the grounding switch is open or in any other state, the panel remains absolutely locked and cannot be illegally opened by conventional tools, thereby completely eliminating the risk of accidentally entering a live compartment. Utility Model Content

[0008] To overcome the problems existing in related technologies, the present invention discloses a ring main unit with mechanical locking of the mechanism panel based on grounding switch linkage, which relates to a mechanical locking device for the mechanism panel of the ring main unit based on grounding switch linkage, specifically to a locking mechanism for the ring main unit panel integrated into the operating shaft of the grounding switch.

[0009] The technical solution is as follows: A ring main unit with mechanical interlocking of the mechanism room panel based on grounding switch linkage includes a cable compartment, a switch compartment, a mechanism compartment, a mechanism room panel assembly, and a cable compartment door fixedly connected together. The switch compartment is installed above the rear side of the cable compartment, and the mechanism compartment is installed above the front side of the cable compartment. The mechanism compartment and the switch compartment are fixedly connected together. The mechanism room panel assembly is installed at the front of the mechanism compartment. The cable compartment door is installed at the front of the cable compartment. An isolation mechanism is installed inside the mechanism room. This isolation mechanism is used to close, open, and ground the switch in the switch compartment, and to lock and unlock the mechanism room panel assembly. The isolation mechanism is assembled together by a fixed connection between an interlocking device assembly and a grounding operating shaft. The interlocking device assembly is installed on the lower left side of the isolation mechanism and locks / unlocks the mechanism chamber panel assembly under the rotational movement of the grounding operating shaft. A panel unlocking / locking cam is installed on the grounding operating shaft, and the rotational movement of the grounding operating shaft drives the interlocking pin to move linearly in the horizontal direction.

[0010] Furthermore, the cable compartment door is interlocked with the lower cabinet door interlock assembly installed on the isolation mechanism; the lower cabinet door interlock assembly is installed below the isolation mechanism and locks / unlocks the cable compartment door under the rotational movement of the grounding operating shaft; The lower cabinet door interlock assembly includes a cabinet door interlock positioning mounting plate, which is interference-fitted onto the interlocking square rod, and the bottom end of the interlocking square rod is connected to the cabinet door interlocking post. The grounding shaft guide plate and the locking / unlocking crank arm are respectively mounted on the grounding operating shaft. The grounding shaft guide plate is located at the front end of the panel unlocking / locking cam mounted on the grounding operating shaft, and the locking / unlocking crank arm is located at the front end of the grounding shaft guide plate. The grounding shaft guide plate is mounted on the support bend plate. The interlocking plate is mounted on the lower end of the interlocking square rod by fixing nails, and the spring abuts against the lower part of the interlocking plate and is sleeved on the interlocking square rod.

[0011] Furthermore, the mechanism chamber panel assembly is composed of a mechanism chamber panel, fixing screws, interlocking bends, and lock holes, which are fixedly connected together.

[0012] Furthermore, the interlocking device assembly consists of an interlocking pin, a return spring, a positioning mounting plate, rivets, and a panel unlocking / locking cam, which are assembled together in a fixed installation manner. The front end of the interlocking pin penetrates the positioning mounting plate of the frame structure. Inside the positioning mounting plate frame, the interlocking pin is fitted with a return spring. The front end of the interlocking pin makes hard contact with the panel unlocking / locking cam fitted on the grounding operating shaft. A rivet is installed at the front end of the positioning mounting plate of the frame structure.

[0013] Furthermore, during the locking of the mechanism panel assembly, the operating handle is inserted into the grounding operating shaft and rotated counterclockwise. The grounding switch is opened, and the panel unlocking / locking cam on the grounding operating shaft rotates counterclockwise together. The end of the panel unlocking / locking cam will press against the interlocking pin and move linearly to the left. The return spring is compressed, and the interlocking pin is inserted into the lock hole on the mechanism panel assembly.

[0014] Furthermore, the isolation mechanism also includes: a camshaft, an isolation operation component, a grounding operation component, a drive cam, an isolation drive pin, and a grounding drive pin; The camshaft is fixedly connected to the drive cam. When the drive cam rotates clockwise or counterclockwise, it drives the camshaft to rotate clockwise or counterclockwise.

[0015] The camshaft is fixedly connected to the isolation shaft interlocking plate and the grounding shaft interlocking plate. When the camshaft rotates, it drives the grounding shaft interlocking plate and the isolation shaft interlocking plate to rotate in a certain direction.

[0016] Combining all the above technical solutions, the beneficial effects of this utility model are as follows: This utility model fundamentally solves the security dilemma of "false lock, real danger," addressing a core industry challenge. The entire interlocking device does not rely on electrical components or software programs, adopts a fully mechanical structure, has strong anti-interference capabilities, adapts to the harsh electromagnetic and environmental conditions inside the ring main unit, has a long lifespan, high reliability, and is easy to maintain. This utility model's technical solution is novel, its structure is simple, and its solution balances low cost and high reliability, with flexible and convenient installation. Attached Figure Description

[0017] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure; Figure 1This is a schematic diagram of a ring main unit with mechanical interlocking of the control panel based on grounding switch linkage provided in this embodiment of the present invention; Figure 2 This is a schematic diagram of the isolation mechanism provided in an embodiment of the present utility model; Figure 3 This is a schematic diagram showing the connections of the various structures included in the isolation mechanism provided in this embodiment of the utility model; Figure 4 This is a schematic diagram of the various structures included in the interlocking device assembly provided in this embodiment of the utility model; Figure 5 This is a schematic diagram of the various structures included in the lower cabinet door interlocking assembly provided in this embodiment of the utility model; Figure 6 This is a schematic diagram of the various structures included in the mechanism room panel assembly provided in this embodiment of the utility model; Figure 7 This is a diagram illustrating the effect of the mechanism room panel being locked in one state and grounded tripping in another state, as provided in this embodiment of the utility model. Figure 8 This is a diagram illustrating the effect of the mechanism room panel being unlocked and grounded closed, as provided in this embodiment of the utility model. Figure 9 This is a rear view structural schematic diagram of the isolation mechanism provided in this embodiment of the utility model; In the diagram: 1. Cable compartment; 2. Switch compartment; 3. Mechanism compartment; 4. Mechanism compartment panel assembly; 410. Mechanism compartment panel; 420. Fixing screw; 430. Interlocking bend plate; 440. Lock hole; 5. Cable compartment door; 6. Isolation mechanism; 7. Interlocking device assembly; 710. Interlocking pin; 720. Return spring; 730. Positioning mounting plate; 740. Rivet; 750. Panel unlocking / locking cam; 8. Lower cabinet door interlocking assembly; 810. Cabinet door interlocking positioning mounting plate; 820. 830. Interlocking square rod; 840. Engaging / closing crank arm; 850. Interlocking plate; 860. Fixing pin; 870. Spring; 880. Cabinet door interlocking column; 890. Supporting bend plate; 9. Grounding shaft guide plate; 10. Grounding operating shaft; 11. Grounding shaft interlocking plate; 12. Cam shaft; 13. Isolation shaft interlocking plate; 14. Isolation operating shaft; 150. Isolation operating assembly; 16. Grounding operating assembly; 17. Drive cam; 18. Isolation drive pin; 19. Grounding drive pin. Detailed Implementation

[0018] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0019] Example 1: The ring main unit with mechanical interlocking of the mechanism room panel based on grounding switch linkage provided in this embodiment of the present invention converts the rotational motion of the grounding switch into the linear motion of the interlocking pin 710, directly controlling the locking and opening of the mechanism room panel. This invention proposes a linkage transmission mechanism and designs a sophisticated linkage, cam, or gear transmission mechanism, which is directly linked to the operating shaft of the grounding switch. When the operating shaft of the grounding switch rotates to the "closed" position, the transmission mechanism drives the interlocking pin 710 to retract, releasing the obstruction of the panel's dedicated baffle. When the operating shaft of the grounding switch rotates to the "open" position, the transmission mechanism drives the interlocking pin 710 to extend, blocking the panel's dedicated baffle. A panel locking execution mechanism is also proposed. A dedicated baffle controlled by the interlocking pin 710 is integrated on the mechanism room panel assembly 4. When the interlocking pin 710 extends (grounding switch not closed), the dedicated baffle is locked, preventing the panel from detaching from the frame; only when the interlocking pin 710 retracts (grounding switch closed) can the panel be operated and opened.

[0020] like Figure 1 As shown, the ring main unit based on the grounding switch linkage mechanism with mechanical interlocking of the control room panel mainly consists of a cable compartment 1, a switch compartment 2, a control room 3, a control room panel assembly 4, and a cable compartment door 5, all fixedly connected together. The switch compartment 2 is installed above and behind the cable compartment 1, and the control room 3 is installed above and in front of the cable compartment 1; the control room 3 and switch compartment 2 are fixedly connected together. The control room panel assembly 4 is installed directly in front of the control room 3, and the two are fixed together by screws / studs (not shown in the figure). The cable compartment door 5 is installed directly in front of the cable compartment 1, and the cable compartment door 5 is interlocked with the lower cabinet door interlocking assembly 8 on the isolation mechanism 6 (e.g., ...). Figure 3 ), to prevent accidental entry into energized areas.

[0021] The mechanism compartment 3 houses the switch in the control switch compartment 2, enabling closing, opening, and grounding of the circuit breaker. It also includes an isolation mechanism 6 for locking and unlocking the mechanism compartment panel assembly 4. The isolation mechanism 6 is installed inside the mechanism compartment 3, and the load switch is installed inside the switch compartment 2. The isolation mechanism 6 and the load switch are connected via a dynamic fit. Operating the isolation mechanism 6 enables the load switch to close, open, and ground. When the isolation mechanism 6 is grounded and open, it locks the mechanism compartment panel; when the isolation mechanism is grounded and closed, it unlocks the mechanism compartment panel.

[0022] like Figure 3 As shown, the isolation mechanism 6 is mainly composed of interlocking device assembly 7, lower cabinet door interlocking assembly 8, grounding operating shaft 9, grounding shaft interlocking plate 10, camshaft 11, isolation shaft interlocking plate 12, isolation operating shaft 13, and various mounting plate accessories (not shown in the figure) assembled together by a fixed connection.

[0023] like Figure 9 As shown, the isolation mechanism 6 also includes an isolation operation component 110, a grounding operation component 120, a drive cam 130, an isolation drive pin 140, and a grounding drive pin 150. The camshaft 11 is fixedly connected to the drive cam 130; when the drive cam 130 rotates clockwise or counterclockwise, it drives the camshaft 11 to rotate clockwise or counterclockwise. The camshaft 11 is fixedly connected to the isolation shaft interlocking plate 12 and the grounding shaft interlocking plate 10; when the camshaft 11 rotates, it drives the grounding shaft interlocking plate 10 and the isolation shaft interlocking plate 12 to rotate in a certain direction. Figure 3 The grounding trip and isolation trip positions shown represent the free state of the mechanism; details are as follows: (1) When grounding is required: Use the operating handle to insert the grounding operating shaft 9 and rotate it clockwise. The grounding operating shaft 9 is fixedly connected to the grounding operating component 120. When the grounding operating shaft 9 rotates clockwise, the grounding operating component 120 drives the grounding drive pin 150 to rotate clockwise. Under the drive of the camshaft 11, the isolation shaft interlocking plate 12 will rotate counterclockwise. After the operation is completed, the isolation shaft interlocking plate 12 will block the isolation operating shaft 13. At this time, the isolation operating shaft 13 cannot be operated.

[0024] (2) When isolation and closing are required, the isolation operating shaft 13 is inserted and rotated clockwise using the operating handle. The isolation operating shaft 13 is fixedly connected to the isolation operating component 110. When the isolation operating shaft 13 rotates clockwise, the isolation operating component 110 drives the isolation drive pin 140 to rotate clockwise. Under the drive of the camshaft 11, the grounding shaft interlocking plate 10 will rotate clockwise. After the operation is completed, the grounding shaft interlocking plate 10 will block the grounding operating shaft 9. At this time, the grounding operating shaft 9 cannot be operated.

[0025] For example, the isolation mechanism 6 controls the switch inside the switch chamber 2 to achieve closing, opening, and grounding, i.e., to determine whether the circuit is connected. The interlocking device assembly 7 is installed on the lower left side of the isolation mechanism 6, and its function is to lock / unlock the mechanism chamber panel assembly 4 under the rotational movement of the grounding operating shaft 9. The panel unlocking / locking cam 750 is installed on the grounding operating shaft 9, and the rotational movement of the grounding operating shaft 9 drives the interlocking pin 710 to move linearly in the left and right directions; as Figure 4 As shown, the interlocking device assembly 7 mainly consists of an interlocking pin 710, a return spring 720, a positioning mounting plate 730, rivets 740, and a panel unlocking / locking cam 750, which are assembled together by a fixed installation. The front end of the interlocking pin 710 penetrates the positioning mounting plate 730 of the frame structure. The return spring 720 is fitted inside the frame of the positioning mounting plate 730. The front end of the interlocking pin 710 makes hard contact with the panel unlocking / locking cam 750 fitted on the grounding operating shaft 9. The rivets 740 are installed at the front end of the positioning mounting plate 730 of the frame structure, and the positioning mounting plate 730 is fixed by the rivets 740. like Figure 6 As shown, the mechanism panel assembly 4 is mainly composed of the mechanism panel 410, fixing screws 420, interlocking bend plate 430, and lock hole 440, which are fixedly connected together. Clockwise rotation of the grounding operating shaft 9 represents grounding closing; counterclockwise rotation of the grounding operating shaft 9 represents grounding opening / closing. During grounding closing operation, the grounding operating shaft 9 rotates clockwise, which drives the panel unlocking / locking cam 750 to rotate clockwise. At this time, the interlocking pin 710 moves to the right under the action of the return spring 720, and the interlocking pin 710 is pulled out from the lock hole 440 on the interlocking bend plate 430, unlocking the panel and allowing for disassembly.

[0026] During grounding tripping operation, the grounding operating shaft 9 rotates counterclockwise, which in turn drives the panel unlocking / locking cam 750 to rotate counterclockwise. At this time, the panel unlocking / locking cam 750 presses the interlocking pin 710 to the left, inserting it into the lock hole 440 on the interlocking bend plate 430, locking the panel and preventing it from being disassembled. The lower cabinet door interlock assembly 8 is installed below the isolation mechanism 6, and its function is to lock / unlock the cable compartment door 5 under the rotational movement of the grounding operating shaft 9.

[0027] like Figure 5The lower cabinet door interlocking assembly 8 is mainly composed of a cabinet door interlocking positioning mounting plate 810, an interlocking square rod 820, a locking / unlocking crank arm 830, an interlocking plate 840, a fixing nail 850, a spring 860, a cabinet door interlocking column 870, a support bend plate 880, and a grounding shaft guide plate 890, which are assembled together in a fixed installation manner. The cabinet door interlocking positioning mounting plate 810 is interference-fitted onto the interlocking square rod 820, and the bottom end of the interlocking square rod 820 is connected to the cabinet door interlocking column 870; the grounding shaft guide plate 890 and the locking / unlocking crank arm 830 are respectively mounted on the grounding operating shaft 9, the grounding shaft guide plate 890 is located at the front end of the panel unlocking / locking cam 750 mounted on the grounding operating shaft 9, the locking / unlocking crank arm 830 is located at the front end of the grounding shaft guide plate 890, and the grounding shaft guide plate 890 is mounted on the support bend plate 880; the interlocking plate 840 is mounted on the lower end of the interlocking square rod 820 by fixing nails 850, and the spring 860 abuts against the lower part of the interlocking plate 840 and is sleeved on the interlocking square rod 820; For example, Figure 7 This is a diagram illustrating the effect of the mechanism room panel being locked in one state and grounded tripping in another state, as provided in this embodiment of the utility model. Figure 8 This is a diagram illustrating the effect of the mechanism room panel being unlocked and grounded closed, as provided in this embodiment of the utility model. Mechanism panel locking: Insert the special operating handle into the grounding operating shaft 9 and rotate it counterclockwise by a certain angle. The grounding switch opens, and the panel unlocking / locking cam 750 on the grounding operating shaft 9 rotates counterclockwise by a certain angle. The end of the panel unlocking / locking cam 750 will press against the interlocking pin 710, causing it to move linearly to the left. The return spring 720 is compressed, and the interlocking pin 710 will penetrate into the lock hole 440 on the mechanism panel assembly 4. At this time, the mechanism panel assembly 4 cannot be removed. Insert the special operating handle into the isolation operating shaft 13 and rotate it clockwise by a certain angle. The isolation mechanism 6 closes, the unit is energized, and the power supply is completed.

[0028] Unlocking the mechanism panel assembly: Insert the special operating handle into the isolating operating shaft 13 and rotate it counterclockwise by a certain angle. The isolating mechanism 6 will open and the power will be cut off. Then, insert the special operating handle into the grounding operating shaft 9 and rotate it clockwise by a certain angle. The grounding switch will close. The panel unlocking / locking cam 750 on the grounding operating shaft 9 will rotate clockwise by a certain angle. The end of the panel unlocking / locking cam 750 will no longer press against the interlocking pin 710. Under the action of the return spring 720, the interlocking pin 710 will move straight to the right and will come out of the lock hole 440 on the mechanism panel assembly 4. At this time, the mechanism panel assembly 4 is unlocked and can be removed for maintenance.

[0029] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any modifications, equivalent substitutions and improvements made by those skilled in the art within the scope of the technology disclosed in the present utility model, within the spirit and principles of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A ring main unit with a mechanical interlocking mechanism panel based on grounding switch linkage, comprising a cable compartment (1), a switch compartment (2), a mechanism compartment (3), a mechanism compartment panel assembly (4), and a cable compartment door (5) fixedly connected together, wherein the switch compartment (2) is installed above the rear side of the cable compartment (1), and the mechanism compartment (3) is installed above the front end of the cable compartment (1), and the mechanism compartment (3) and the switch compartment (2) are fixedly connected together; the mechanism compartment panel assembly (4) is installed in front of the mechanism compartment (3); and the cable compartment door (5) is installed in front of the cable compartment (1); characterized in that, An isolation mechanism (6) is installed in the mechanism room (3). The isolation mechanism (6) is used to close, open and ground the switch in the switch room (2), and to lock and unlock the mechanism room panel assembly (4). The isolation mechanism (6) is assembled together by a fixed connection of an interlocking device assembly (7) and a grounding operating shaft (9); the interlocking device assembly (7) is installed on the lower left side of the isolation mechanism (6), and under the rotational movement of the grounding operating shaft (9), it locks / unlocks the mechanism chamber panel assembly (4); a panel unlocking / locking cam (750) is installed on the grounding operating shaft (9), and the rotational movement of the grounding operating shaft (9) drives the interlocking pin (710) to move linearly in the horizontal direction.

2. The ring main unit with mechanical interlocking of the control panel based on grounding switch linkage as described in claim 1, characterized in that, The cable compartment door (5) is interlocked with the lower cabinet door interlock assembly (8) installed on the isolation mechanism (6); the lower cabinet door interlock assembly (8) is installed below the isolation mechanism (6) and locks / unlocks the cable compartment door (5) under the rotational movement of the grounding operating shaft (9); The lower cabinet door interlock assembly (8) includes a cabinet door interlock positioning mounting plate (810), which is interference-fitted onto the interlocking square rod (820), and the bottom end of the interlocking square rod (820) is connected to the cabinet door interlocking post (870). The grounding shaft guide plate (890) and the locking / unlocking crank arm (830) are respectively mounted on the grounding operating shaft (9). The grounding shaft guide plate (890) is located at the front end of the panel unlocking / locking cam (750) mounted on the grounding operating shaft (9). The locking / unlocking crank arm (830) is located at the front end of the grounding shaft guide plate (890). The grounding shaft guide plate (890) is mounted on the support bend plate (880). The interlocking plate (840) is fitted onto the lower end of the interlocking square rod (820) by a fixing nail (850), and the spring (860) abuts against the lower part of the interlocking plate (840) and is fitted onto the interlocking square rod (820).

3. The ring main unit with mechanical interlocking of the control panel based on grounding switch linkage as described in claim 1, characterized in that, The interlocking device assembly (7) is assembled together by means of an interlocking pin (710), a return spring (720), a positioning mounting plate (730), a rivet (740), and a panel unlocking / locking cam (750) through a fixed installation. The front end of the interlocking pin (710) penetrates the positioning mounting plate (730) of the frame structure. Inside the frame of the positioning mounting plate (730), the interlocking pin (710) is fitted with a return spring (720). The front end of the interlocking pin (710) is in hard contact with the panel unlocking / locking cam (750) fitted on the grounding operating shaft (9). The front end of the positioning mounting plate (730) of the frame structure is fitted with a rivet (740).

4. The ring main unit with mechanical interlocking of the control panel based on grounding switch linkage as described in claim 1, characterized in that, When the mechanism panel assembly (4) is locked, the operating handle is inserted into the grounding operating shaft (9) and rotated counterclockwise. The grounding switch is opened, and the panel unlocking / locking cam (750) on the grounding operating shaft (9) rotates counterclockwise together. The end of the panel unlocking / locking cam (750) will press against the interlocking pin (710) and move to the left in a straight line. The reset spring (720) is compressed, and the interlocking pin (710) is inserted into the lock hole (440) on the mechanism panel assembly (4).

5. The ring main unit with mechanical interlocking of the control panel based on grounding switch linkage according to claim 2, characterized in that, The isolation mechanism (6) further includes: a camshaft (11), an isolation operation component (110), a grounding operation component (120), a drive cam (130), an isolation drive pin (140), and a grounding drive pin (150). The camshaft (11) is fixedly connected to the drive cam (130). When the drive cam (130) rotates clockwise or counterclockwise, it drives the camshaft (11) to rotate clockwise or counterclockwise. The camshaft (11) is fixedly connected to the isolation shaft interlocking plate (12) and the grounding shaft interlocking plate (10). When the camshaft (11) rotates, it drives the grounding shaft interlocking plate (10) and the isolation shaft interlocking plate (12) to rotate in a certain direction.

Images