A device lockout isolation device suitable for electrical molded case circuit breakers after power off

Abstract

This utility model relates to a device for locking and isolating equipment after a molded case circuit breaker (MCCB) has been de-energized. The device includes a first base plate, a second base plate, a key lug, a hinge shaft, a baffle, a keyhole, a lock hole, a mounting location, and mounting holes. This device can be permanently fixed to the MCCB, facilitating power isolation after the MCCB is de-energized during routine production maintenance or repairs. This prevents accidental power activation during maintenance and ensures electrical safety during repairs or repairs.

Description

Technical Field

[0001] This patent application belongs to the technical field of energy isolation equipment after electrical power failure, and more specifically, it relates to an equipment locking isolation device suitable for electrical molded case circuit breakers after power failure. Background Technology

[0002] In order to implement the relevant requirements of the Safety Supervision and Administration Bureau's "Work Plan for Promoting the 'Energy Isolation Management Measures' for Safety Production", effectively improve the company's safety management level, and prevent damage to employees and third parties caused by accidental activation, start-up, or release of stored energy during equipment maintenance, it is necessary to formulate the company's electrical energy isolation plan.

[0003] Specifically regarding molded case circuit breakers, the company's technicians discovered during implementation that because molded case circuit breaker switches lack fixed energy isolation locks, when the molded case circuit breaker is de-energized for routine inspection or maintenance, relevant personnel cannot effectively isolate the electrical energy to prevent accidental start-up, thus posing a significant safety hazard. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a suitable equipment lock isolation device for electrical molded case circuit breakers after power failure, so as to reduce safety hazards and ensure that electrical energy can be effectively isolated by this equipment lock isolation device after power failure of electrical molded case circuit breakers.

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A device lock isolation device suitable for electrical molded case circuit breakers after power failure includes a first floor and a second floor that are rotatably connected, a rotating component for connecting the first floor and the second floor, a plurality of mounting holes spaced apart on the first floor, a key nose that is vertically disposed on the first floor, a key hole disposed on the key nose, a baffle that is parallel to one side of the second floor, and a key hole disposed on the second floor and engaging with the key hole on the key nose.

[0007] A further improvement of this utility model is that multiple mounting holes are arranged vertically and vertically on the first floor, with a quantity of 2 to 6.

[0008] A further improvement to the technical solution of this utility model is that the rotating component is a hinge or a pivot.

[0009] A further improvement of this utility model is that the baffle is a rectangular baffle and the key nose is a rectangular latch.

[0010] A further improvement of this utility model is that the keyhole and the baffle are located on the same side of the second floor.

[0011] A further improvement of this utility model is that the mounting hole is a screw hole.

[0012] A further improvement of this utility model is that the first floor and the second floor have the same specifications.

[0013] The beneficial effects achieved by this utility model due to the adoption of the above technical solution are as follows:

[0014] This utility model can be permanently fixed on the molded case circuit breaker, which is convenient for locking the molded case circuit breaker after power is cut off during daily production inspection or maintenance to isolate the power supply, prevent the accidental start of power during maintenance and ensure the safety of power supply during inspection or maintenance.

[0015] Although this device has no direct economic benefits, it can lock the circuit breaker after power failure to isolate electrical energy, preventing accidental start-up, activation, or release of energy during equipment maintenance and repair work, thus preventing injury or death to employees or third parties and damage to equipment. Therefore, it has high safety value. Attached Figure Description

[0016] Figure 1 This is a front structural diagram of the present invention;

[0017] Figure 2 This is a side view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the installation part of this utility model;

[0019] Among them: 11, first floor, 12, second floor, 2, key nose, 3, rotating part, 4, baffle, 5, key hole, 6, lock hole, 7, mounting part, 8, mounting hole, 9, molded case circuit breaker. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the embodiments.

[0021] This utility model discloses a device for isolating equipment locks after a molded case circuit breaker has been de-energized. See [link to relevant documentation]. Figure 1 , Figure 2 It includes a first floor 11, a second floor 12, a key nose 2, a rotating part 3, a baffle 4, a keyhole 5, a lock hole 6, a mounting part 7, and a mounting hole 8.

[0022] Item Figure 1 The first floor 11 and the second floor 12 are rotatably connected to enable the rotational opening and closing of the first floor 11 and the second floor 12. The first floor 11 and the second floor 12 are rotatably connected by a rotating component 3, which can be a hinge, a pivot, or a pin, as long as it enables the two to rotate.

[0023] The mounting holes 8 are spaced apart, preferably vertically spaced on the first floor 11, with 2 to 6 holes in total. They can also be spaced horizontally, as long as the installation requirements are met. See [link / reference] Figure 1 In this embodiment, there are two mounting holes 8, shaped like screw holes. The key lug 2 is vertically mounted on the first base plate 11 and located on the right side of the first base plate 11. See Figure 2 The key nose 2 is a rectangular lock with a key hole 6 for locking.

[0024] The first floor panel 11 and the second floor panel 12 are identical in size, both being long, rectangular steel plates. A rectangular baffle 4 is installed parallel to the right side of the second floor panel 12, used to block the tripping operation handle of the molded case circuit breaker 9. A keyhole 5, which engages with the lock hole 6, is located slightly below the baffle 4; that is, the keyhole 5 and the baffle 4 are located on the same side of the second floor panel 12. The keyhole 5 is used to lock the lock hole 6. By installing a lock on the lock hole 6, and locking it after the circuit breaker is de-energized, effective isolation of electrical energy can be achieved.

[0025] See Figure 3 A dedicated mounting location 7 is provided on the molded case circuit breaker 9. Multiple mounting holes 8 are used to fix the device to the molded case circuit breaker 9, facilitating effective power isolation during routine inspections or maintenance. After the molded case circuit breaker 9 is de-energized, the switch operating handle falls down. During routine inspections or maintenance, the baffle 4 is rotated via a hinge or shaft, causing the keyhole 5 to face upwards. The baffle 4 blocks the tripping operating handle of the molded case circuit breaker 9, and the keyhole 5 fits over the lock hole 6, effectively isolating the device from the power supply.

[0026] The locking isolation device can be fixed on the molded case circuit breaker 9, so that when the power is cut off during routine inspection or maintenance of the equipment, the power can be effectively locked and isolated after the handle of the molded case circuit breaker 9 is lowered.

Claims

1. A device for locking and isolating equipment after a molded case circuit breaker has been de-energized, characterized in that: It includes a first floor (11) and a second floor (12) that are rotatably connected, a rotating member (3) for connecting the first floor (11) and the second floor (12), a plurality of mounting holes (8) spaced apart on the first floor (11), a key nose (2) vertically disposed on the first floor (11), a lock hole (6) disposed on the key nose (2), a baffle (4) parallel to one side of the second floor (12), and a key hole (5) disposed on the second floor (12) and fitted into the lock hole (6) on the key nose (2).

2. The equipment locking isolation device suitable for electrical molded case circuit breakers after power failure, as described in claim 1, is characterized in that: Multiple mounting holes (8) are arranged vertically and vertically on the first floor (11), with a quantity of 2 to 6.

3. The equipment locking isolation device suitable for electrical molded case circuit breakers after power failure, as described in claim 2, is characterized in that: The rotating part (3) is a hinge or a pivot.

4. A device for locking and isolating equipment after a molded case circuit breaker is de-energized, as described in claim 3, characterized in that: The baffle (4) is a rectangular baffle, and the key nose (2) is a rectangular latch.

5. A device for locking and isolating equipment after a molded case circuit breaker is de-energized, as described in claim 4, characterized in that: The keyhole (5) and the baffle (4) are located on the same side of the second floor (12).

6. A device for locking and isolating equipment after a molded case circuit breaker has been de-energized, as described in any one of claims 1 to 5, characterized in that: The mounting hole (8) is a screw hole.

7. A device for locking and isolating equipment after a molded case circuit breaker is de-energized, as described in claim 6, characterized in that: The first floor (11) and the second floor (12) have the same specifications.

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