Mechanical interlock for isolating wire inlet cabinet and circuit breaker main cabinet

Abstract

The utility model discloses a mechanical interlock of an isolation wire inlet cabinet and a circuit breaker main cabinet, key locks are arranged on the isolation wire inlet cabinet and the circuit breaker main cabinet, and two key locks share one key. According to the utility model, an interlocking structure is adopted, on-load opening and closing of the isolation incoming line cabinet are prevented, the five-prevention requirement is met, and the safety is improved.

Description

Technical Field

[0001] This utility model relates to mechanical interlocking, and more particularly to a mechanical interlocking between an isolation incoming line cabinet and a circuit breaker main cabinet. Background Technology

[0002] In existing technology, the isolating incoming line cabinet and the circuit breaker main cabinet are each equipped with locks, but mechanical interlocking is not used. This structure is prone to misoperation, such as closing the circuit breaker main cabinet first and then closing the isolating incoming line cabinet, or opening the isolating incoming line cabinet first and then opening the circuit breaker main cabinet. There is a risk of opening and closing the isolating switch under load, which does not meet the five-proof requirements.

[0003] Therefore, it is necessary to develop new types of mechanical interlocking between the isolation incoming line cabinet and the circuit breaker main cabinet to meet the five protection requirements. Utility Model Content

[0004] Purpose of the utility model: In view of the shortcomings and defects of the existing technology, this utility model provides a mechanical interlock between the isolation incoming line cabinet and the circuit breaker main cabinet. The interlocking structure prevents the isolation incoming line cabinet from being opened or closed under load, meets the five protection requirements, and improves safety.

[0005] Technical solution: The present invention relates to a mechanical interlock between an isolation incoming line cabinet and a circuit breaker main cabinet, characterized in that: both the isolation incoming line cabinet and the circuit breaker main cabinet are equipped with key locks, and the two key locks share one key.

[0006] The key lock is fixed on the mechanism panel of the isolation incoming line cabinet or the circuit breaker main cabinet, and the key lock is equipped with a square lock plate.

[0007] The mechanism panel is provided with a fixing plate, which is connected and fixed to the baffle by a limiting stud, and the baffle is connected to a square locking piece.

[0008] The baffle is connected to one end of the tension spring, and the other end of the tension spring is connected to the mechanism panel.

[0009] The key lock is fixed to the mounting plate and has a toothed locking plate.

[0010] The mounting plate is connected to a tension spring at one end, and to a toothed locking plate at the other end. The toothed locking plate is connected to a baffle plate, and the baffle plate is fixed to the limiting plate and the mounting plate by a limiting stud.

[0011] The baffle plate is provided with a mechanism linkage plate on its side.

[0012] Beneficial Effects: Compared with the prior art, this utility model has the following significant advantages: When power is supplied, the main circuit breaker can only be closed after the isolating incoming cabinet is closed, satisfying the requirement of opening and closing the isolating switch without load; when power is off, the isolating incoming cabinet can only be opened after the main circuit breaker is opened, satisfying the requirement of opening and closing the isolating switch without load. This utility model adopts an interlocking structure to prevent the isolating incoming cabinet from being opened or closed under load, meeting the five-proof requirements and improving safety. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0014] Figure 2 for Figure 1 A schematic diagram of a partial structure;

[0015] Figure 3 This is a schematic diagram of the structure of the present invention. Figure 2 ;

[0016] Figure 4 This is a schematic diagram of the structure of the present invention. Figure 3 ;

[0017] Figure 5 This is a partial structural diagram of the present invention. Figure 1 ;

[0018] Figure 6 This is a partial structural diagram of the present invention. Figure 2 ;

[0019] Figure 7 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0020] Figure 8 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0021] Figure 9 for Figure 8 A schematic diagram of a partial structure;

[0022] Figure 10 This is a schematic diagram of the structure of this utility model. Figure 3 ;

[0023] Figure 11 This is a schematic diagram of the structure of this utility model. Figure 4 ;

[0024] In the diagram, 1 is a key lock; 2 is a square lock plate; 3 is a baffle; 4 is a limit stud; 5 is a tension spring; 6 is a fixing plate; 7 is a mechanism panel; 8 is a toothed lock plate; 9 is a baffle; 10 is a limit plate; 11 is a mounting plate; and 12 is a mechanism linkage plate. Detailed Implementation

[0025] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0026] This utility model relates to a mechanical interlock between an isolation incoming line cabinet and a circuit breaker main cabinet. Both the isolation incoming line cabinet and the circuit breaker main cabinet are equipped with key locks 1, with two key locks 1 sharing one key. Each key lock 1 is fixed to the mechanism panel 7 of the isolation incoming line cabinet or the circuit breaker main cabinet and has a square locking plate 2. The mechanism panel 7 has a fixing plate 6, which is connected and fixed to a baffle 3 via a limiting stud 4. The baffle 3 is connected to one end of a tension spring 5, and the other end of the tension spring 5 is connected to the mechanism panel 7. The key lock 1 is fixed to a mounting plate 11 and has a toothed locking plate 8. One end of the mounting plate 11 is connected to the tension spring 5, and the other end of the tension spring 5 is connected to the toothed locking plate 8. The toothed locking plate 8 is connected to a baffle 9, which is connected and fixed to a limiting plate 10 and the mounting plate 11 via a limiting stud 4. A mechanism linkage plate 12 is located on the side of the baffle 9.

[0027] In use, the key lock 1 is fixed to the mechanism panel 7, and the square lock plate 2 is installed. The baffle 3 is fixed to the fixing plate 6 by the limiting stud 4. The fixing plate 6 is installed on the mechanism panel 7, and the baffle 3 is connected to the square lock plate 2. One end of the tension spring 5 is on the baffle 9, and the other end is on the mechanism panel 7. When the square lock plate 2 rotates, the baffle 3 slides up and down. When the key is turned clockwise, it locks, and the square lock plate 2 moves the baffle 3 downward; when the key is turned counterclockwise, it unlocks, and the square lock plate 2 moves the baffle 3 upward. Figure 1 , Figure 2 ).

[0028] The key to the isolating incoming line cabinet can only be removed when the switch is closed: After the isolating incoming line cabinet is closed, the operating shaft of the mechanism rotates, and the key can be locked by rotating it clockwise. The square locking plate 2 rotates, and the baffle 3 moves downwards. At this time, the operating hole of the mechanism is blocked by the baffle 3, preventing the opening of the switch. Figure 3 ).

[0029] When the isolation incoming line cabinet is in the open position, the baffle 3 is blocked by the mechanism operating shaft, preventing it from moving downwards, and the key lock 1 cannot be turned to remove the key. Figure 4 ).

[0030] Fix the key lock 1 to the mounting plate 11 and install the toothed lock plate 8. The stop plate 9 is fixed to the limiting plate 10 and the mounting plate 11 via the limiting stud 4, and is connected to the toothed lock plate 8. One end of the tension spring 5 is on the toothed lock plate 8, and the other end is on the mounting plate 11. When the toothed lock plate 8 rotates, the stop plate 9 moves up and down. When the key is turned clockwise, it locks, and the toothed lock plate 8 moves the stop plate 9 upwards; when the key is turned counterclockwise, it unlocks, and the toothed lock plate 8 moves the stop plate 9 downwards. Figure 5 , Figure 6 ).

[0031] Install the mounting plate 11 after installation. Figure 5 The whole thing is fixed on the mechanism. Figure 7 ).

[0032] The key to the main circuit breaker cabinet can only be removed when it is in the open position. After the main circuit breaker cabinet is open, the linkage plate 12 moves downward, and the key can be locked by rotating it clockwise. The toothed locking plate 8 rotates, and the stop plate 9 moves upward. At this time, the operating hole of the mechanism is blocked by the stop plate 9 and cannot be operated to close the circuit. Figure 10 , Figure 11 ).

[0033] When the circuit breaker main cabinet is in the closed state, the baffle 9 is blocked by the linkage plate 12 and cannot rotate, and the key lock 1 cannot be turned to retrieve the key. Figure 8 , Figure 9 ).

[0034] This utility model is equipped with two key locks on the operating mechanism of the isolation incoming line cabinet and the circuit breaker main cabinet. The order of operation is controlled by two key locks and one key, thereby meeting the five-proof requirements to prevent the disconnection switch from opening or closing under load.

[0035] The key to the isolation incoming cabinet can only be removed when it is closed. After the isolation incoming cabinet is closed, the key can be rotated clockwise to lock it, and the key can be pulled out to unlock the circuit breaker main cabinet key lock. The circuit breaker main cabinet can then be operated to close.

[0036] When the isolation incoming line cabinet is in the open position, the baffle is blocked by the operating shaft of the mechanism, preventing it from moving down. The key lock cannot be turned to remove the key, the key lock of the circuit breaker main cabinet is not unlocked, and the manual operation hole is blocked by the baffle and cannot be operated to close the circuit.

[0037] The key to the main circuit breaker cabinet can only be removed when it is in the open position. After the main circuit breaker cabinet is open, the key can be locked by rotating it clockwise and the key can be pulled out to unlock the key lock of the isolation incoming cabinet. The isolation incoming cabinet can then be operated to open.

[0038] When the main circuit breaker cabinet is in the closed state, the locking plate is blocked by the linkage plate of the mechanism to prevent it from rotating, the key lock cannot be turned to remove the key, the key lock of the isolation incoming line cabinet is not unlocked, and the manual operation hole is blocked by the blocking plate and cannot be operated to open the circuit breaker.

[0039] This invention allows the main circuit breaker cabinet to be closed only after the isolation incoming line cabinet is closed during power supply, ensuring the opening and closing of the isolating switch without load. During power outages, the isolation incoming line cabinet can only be opened after the main circuit breaker cabinet is opened, again ensuring the opening and closing of the isolating switch without load. This invention employs an interlocking structure to prevent the isolation incoming line cabinet from being opened or closed under load, meeting the five-proof requirements and improving safety.

Claims

1. A mechanical interlock between an isolation incoming line cabinet and a circuit breaker main cabinet, characterized in that: Both the isolation incoming line cabinet and the circuit breaker main cabinet are equipped with key locks (1), and the two key locks (1) share one key; the key locks (1) are fixed on the mechanism panel (7) of the isolation incoming line cabinet or the circuit breaker main cabinet, and the key locks (1) are equipped with square lock pieces (2); the mechanism panel (7) is equipped with a fixing plate (6), and the fixing plate (6) is connected and fixed to the baffle (3) by a limiting stud (4), and the baffle (3) is connected to the square lock pieces (2); the baffle (3) is connected to one end of a tension spring (5). The other end of the tension spring (5) is connected to the mechanism panel (7); the key lock (1) is fixed on the mounting plate (11), and the key lock (1) is provided with a toothed lock plate (8); one end of the mounting plate (11) is connected to the tension spring (5), the other end of the tension spring (5) is connected to the toothed lock plate (8), the toothed lock plate (8) is connected to the baffle plate (9), and the baffle plate (9) is connected and fixed to the limiting plate (10) and the mounting plate (11) through the limiting stud (4); the side of the baffle plate (9) is provided with a mechanism linkage plate (12).

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