Cabinet door locking device of high-voltage power distribution cabinet

Abstract

The utility model relates to the technical field of power distribution cabinets, in particular to a cabinet door locking device of a high-voltage power distribution cabinet, which comprises a power distribution cabinet body and a cabinet door, one side of the inner wall of the power distribution cabinet body is fixedly connected with a first fixing block, one side of the cabinet door is fixedly connected with a second fixing block, and the first fixing block corresponds to the second fixing block. A movable cavity is formed in the second fixing block, and the inner wall of the movable cavity is slidably connected with a rack. Compared with the prior art, the power distribution cabinet is provided with the first fixing block, the second fixing block, the gear, the rack and the anti-theft structure, the first fixing block and the second fixing block are made of insulating clinker, and the power distribution cabinet body and the cabinet door are coated with insulating paint, so that the power distribution cabinet is not conductive; according to the anti-theft structure of the power distribution cabinet, when a key is inserted into the anti-theft structure, a worker cannot be powered on, the cabinet door can be opened, then an electric brake in the power distribution cabinet can be turned off, then electric appliances in the power distribution cabinet can be overhauled, and the technical problem of fire caused by long-time electric leakage is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power distribution cabinet, specifically is a cabinet door locking device of high voltage power distribution cabinet. BACKGROUND

[0002] The high voltage power distribution cabinet refers to the electric appliance product for the power system generation, transmission, distribution, electric energy conversion and consumption, which plays the role of on-off, control or protection, and the voltage level is 3.6kV~550kV, mainly including high voltage circuit breaker, high voltage disconnector and grounding switch, high voltage load switch, high voltage automatic reclosing and sectionalizer, high voltage operating mechanism, high voltage explosion-proof power distribution device and high voltage switch cabinet etc. High voltage switch manufacturing industry is an important component of power transmission and transformation equipment manufacturing industry, and occupies a very important position in the entire electric power industry.

[0003] The prior art with publication number CN219262005U provides a cabinet door locking device of high voltage power distribution cabinet, belonging to the technical field of high voltage power distribution cabinet door locking equipment, the cabinet door locking device of high voltage power distribution cabinet, including the cabinet body and the cabinet door of high voltage power distribution cabinet, the leakage detection part is arranged in the cabinet body, the lock head that needs the key to open is installed in the inside of cabinet body, the lock tongue is provided on the lock head, the lock catch box for cooperating with the lock tongue is arranged on the cabinet body, the leakage locking part is arranged on the lock catch box, when the leakage detection part detects the leakage, the leakage locking part can limit the lock tongue in the lock catch box. The utility model has the beneficial effects that: when the cabinet door does not leak, the professional personnel with the key can only open it by using the key, and even if the professional personnel cannot open the power distribution cabinet when the power distribution cabinet leaks, so that the cabinet door can only be opened by the professional personnel with the key when the leakage phenomenon is eliminated, and the cabinet door is prevented from being opened by unqualified persons or in dangerous situations.

[0004] Through the above setting, the power distribution cabinet of the prior art is provided with a locking device, and the leakage detection of the power distribution cabinet is completed by the leakage detection part, which provides a heavy effective guarantee for the personal safety of maintenance personnel, and the leakage locking part and the leakage detection part are used in cooperation, so that in the leakage state, even if the key is provided, the cabinet door is also difficult to open, and only after the leakage phenomenon is eliminated through corresponding treatment, the cabinet door can be opened by the key for maintenance work. However, the power distribution cabinet of the prior art has the following defects when it is in operation:

[0005] When the power distribution cabinet of the prior art appears the leakage phenomenon, the staff cannot open the power distribution cabinet even if the key is provided through the locking device and the leakage detection part, but the power distribution cabinet is provided with an electric brake and a total brake, so that the electric brake and the total brake cannot be closed if the power distribution cabinet cannot be opened, and thus the power distribution cabinet cannot be maintained, and the total power supply needs to be cut off by the power supply company to operate it, which is not conducive to the maintenance of the power distribution cabinet, and the operation time is too long, and the long-time leakage may also lead to the phenomenon of fire. Utility model content

[0006] The utility model intends to provide a cabinet door locking device of high voltage distribution cabinet, and mainly solves the technical problem that the existing distribution cabinet cannot be opened and the internal electric switch is closed in the case of leakage, and the phenomenon of fire is caused by long time non-operation.

[0007] To solve the above technical problems, the utility model provides the following technical scheme:

[0008] A cabinet door locking device of high voltage distribution cabinet, including distribution cabinet body and cabinet door, one side of the inner wall of distribution cabinet body is fixedly connected with first fixed block, one side of cabinet door is fixedly connected with second fixed block, first fixed block and second fixed block correspond, the inside of second fixed block is equipped with movable cavity, the inner wall of movable cavity is slidably connected with rack, the inner wall of movable cavity is fixedly connected with limit spring, the other end of limit spring is fixedly connected with one end of rack, the side of first fixed block is equipped with limit slot, rack is inserted with limit slot, the inner wall of movable cavity is rotatably connected with gear, gear is engaged with rack, the side of cabinet door away from second fixed block is equipped with through slot, through slot is linked with movable cavity, the inner wall of through slot is installed with anti-theft structure.

[0009] The working principle and beneficial effects of the utility model are as follows:

[0010] 1. Working principle: when leakage occurs in the inside of distribution cabinet body, first, the key is inserted into the inside of through slot, so that the key extrudes the protection block, and makes it move to the inside of movable slot, then the key is inserted into the special-shaped slot, then the key is rotated, at this time, the key drives the rotating block to rotate, the rotating block drives the gear to rotate, the gear drives the rack to move, so that the rack extrudes the limit spring, and the rack enters the inside of movable cavity, and the slide rod is clamped with the clamping groove, then under the pushing of the resistance block, the cabinet door is opened.

[0011] 2. Beneficial effects:

[0012] Existing technology uses a locking device and a leakage current detection unit to detect leakage current in the distribution cabinet, providing an effective layer of protection for the personal safety of maintenance personnel. The interlocking device and the leakage current detection unit work together to ensure that even with a key, it is difficult to open the cabinet door when a leakage occurs. Only after appropriate measures are taken to eliminate the leakage can the cabinet door be opened for maintenance. However, while the existing distribution cabinet, with its locking device and leakage current detection unit, prevents personnel with a key from opening the cabinet when a leakage occurs, it also prevents the control of the main switch and circuit breaker inside. Therefore, without opening the distribution cabinet, it is impossible to shut off the main switch and circuit breaker, thus hindering maintenance work. Traditional methods of repairing distribution cabinets require the power company to disconnect the main power supply, which is inconvenient for maintenance, time-consuming, and carries the risk of fire due to prolonged electrical leakage. This solution addresses this by incorporating a first and second fixing block, gears, racks, and an anti-theft structure. Since both the first and second fixing blocks are made of insulating material, and the cabinet body and door are coated with insulating varnish, the cabinet is non-conductive. Therefore, inserting the key into the anti-theft structure will not shock the operator, allowing the cabinet door to be opened and the internal power switch to be switched off. This enables maintenance of the internal electrical components, avoiding the technical problem of fire caused by prolonged electrical leakage.

[0013] Preferably, the anti-theft structure includes a rotating block, which is fixedly connected to a gear. An irregularly shaped groove is formed at the end of the rotating block away from the gear. Symmetrical movable grooves are formed on the inner wall of the groove. A protective block is slidably connected to the inner wall of the movable groove. A first spring is fixedly connected to the inner wall of the movable groove, and the other end of the first spring is fixedly connected to the protective block. By setting up the anti-theft structure, unauthorized personnel can be prevented from opening the distribution cabinet, while the protective block can conceal the shape of the irregularly shaped groove.

[0014] Preferably, a vertical block is fixed to the upper surface of the second fixed block, and a movable groove is formed inside the vertical block. The movable groove is connected to the movable cavity, and a slide rod is slidably connected to the inner wall of the movable groove. A slot is formed on the upper surface of the rack, and the slide rod is inserted into the slot. A sliding groove is formed on one side of the cabinet door, and a push rod is slidably connected to the inner wall of the sliding groove. The push rod is fixed to the outer wall of the slide rod. The slide rod can limit the rack, making it easy to open the cabinet door.

[0015] Preferably, a circular groove is formed on the side of the first fixing block near the cabinet door. A second spring is fixedly connected to the inner wall of the groove, and a stop block is fixedly connected to the other end of the second spring. The stop block is slidably connected to the inner wall of the circular groove and abuts against one side of the cabinet door. By setting the stop block and the second spring, the cabinet door is opened by pushing the stop block under the elastic force of the second spring. There is no need to design a handle on the cabinet door, avoiding the problem of damage to parts caused by the pulling force on the cabinet door.

[0016] Preferably, the first fixed block and the second fixed block are made of insulating plastic, and the outer walls of the power distribution cabinet body and the cabinet door are coated with insulating paint. Avoid the phenomenon of electric conduction, avoid the phenomenon of electric shock when opening the cabinet door.

[0017] Preferably, the inner wall of the slot is inserted with a key, and the key is made of insulating material. Avoid the phenomenon of electric shock of the staff.

[0018] Preferably, the side of the protection block facing the opening of the slot is inclined. Facilitate the key to be inserted into the slot. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the overall structure diagram of the utility model patent;

[0020] Figure 2 It is the internal structure diagram of the utility model patent;

[0021] Figure 3 It is the upper cross-sectional structure diagram of the utility model patent;

[0022] Figure 4 It is the key structure diagram of the utility model patent;

[0023] Figure 5 It is the Figure 2 structure diagram of A in the utility model patent;

[0024] Figure 6 It is the Figure 3 structure diagram of B in the utility model patent.

[0025] The reference signs in the drawings of the specification include: 1, power distribution cabinet body; 2, cabinet door; 3, first fixed block; 4, second fixed block; 5, movable cavity; 6, rack; 7, limit spring; 8, limit slot; 9, gear; 10, slot; 11, rotating block; 12, special-shaped slot; 13, movable slot; 14, protection block; 15, first spring; 16, vertical block; 17, moving slot; 18, sliding rod; 19, clamping slot; 20, sliding slot; 21, push rod; 22, circular slot; 23, second spring; 24, abutting block; 25, key. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] For example, Figures 1-6As shown in the figure, a cabinet door locking device of a high-voltage power distribution cabinet, comprising a power distribution cabinet body 1 and a cabinet door 2, characterized in that one side of the inner wall of the power distribution cabinet body 1 is fixedly connected with a first fixed block 3, one side of the cabinet door 2 is fixedly connected with a second fixed block 4, the first fixed block 3 corresponds to the second fixed block 4, an inner cavity 5 is formed in the second fixed block 4, a rack 6 is slidably connected to the inner wall of the inner cavity 5, a limiting spring 7 is fixedly connected to the inner wall of the inner cavity 5, the other end of the limiting spring 7 is fixedly connected to one end of the rack 6, a limiting groove 8 is formed in one side of the first fixed block 3, the rack 6 is inserted into the limiting groove 8, a gear 9 is rotatably connected to the inner wall of the inner cavity 5, the gear 9 is engaged with the rack 6, a through slot 10 is formed in the side of the cabinet door 2 away from the second fixed block 4, the through slot 10 is in communication with the inner cavity 5, an anti-theft structure is installed on the inner wall of the through slot 10, the anti-theft structure comprises a rotating block 11, the rotating block 11 is fixedly connected with the gear 9, a special-shaped slot 12 is formed in the end of the rotating block 11 away from the gear 9, symmetrical movable grooves 13 are formed in the inner wall of the through slot 10, a protection block 14 is slidably connected to the inner wall of the movable groove 13, a first spring 15 is fixedly connected to the inner wall of the movable groove 13, the other end of the first spring 15 is fixedly connected with the protection block 14, a key 25 is inserted into the inner wall of the through slot 10, and the key 25 is made of insulating material.

[0028] As shown in the figure, Figure 5 The upper surface of the second fixed block 4 is fixedly connected with a vertical block 16, the inner part of the vertical block 16 is formed with a moving groove 17, the moving groove 17 is in communication with the inner cavity 5, the inner wall of the moving groove 17 is slidably connected with a sliding rod 18, the upper surface of the rack 6 is formed with a clamping groove 19, the sliding rod 18 is inserted into the clamping groove 19, one side of the cabinet door 2 is formed with a sliding groove 20, the inner wall of the sliding groove 20 is slidably connected with a push rod 21, the push rod 21 is fixedly connected with the outer wall of the sliding rod 18, and the rack 6 is limited, so that the cabinet door 2 is more convenient to open.

[0029] As shown in the figure, Figure 3 And Figure 5 The side of the first fixed block 3 close to the cabinet door 2 is formed with a circular groove 22, the inner wall of the circular groove 22 is fixedly connected with a second spring 23, the other end of the second spring 23 is fixedly connected with an abutting block 24, the abutting block 24 is slidably connected to the inner wall of the circular groove 22, and the abutting block 24 abuts against one side of the cabinet door 2, so that the cabinet door 2 can be opened without pulling by hand, and the use is more convenient.

[0030] From the above, the specific implementation manner of the utility model is as follows:

[0031] When the leakage occurs inside the power distribution cabinet body 1, first, the key 25 with insulation effect is inserted into the slot 10, so that the key 25 extrudes the protection block 14 and moves to the inside of the movable slot 13, then the key 25 is inserted into the special-shaped slot 12, then the key 25 is rotated, at this time the key 25 drives the rotating block 11 to rotate, the rotating block 11 drives the gear 9 to rotate, the gear 9 drives the rack 6 to move, so that the rack 6 extrudes the limiting spring 7, so that the rack 6 enters the inside of the movable cavity 5, at this time the slide rod 18 is clamped with the clamping groove 19 under the action of gravity, then the abutting block 24 is clamped with the clamping groove 19 under the action of the second spring 23, so that the abutting block 24 pushes the cabinet door 2 to open, and the operation is completed.

[0032] The above is only the embodiment of the present application, and the well-known specific structure and characteristics and other common knowledge in the scheme are not described in detail. It should be pointed out that for those skilled in the art, without departing from the structure of the present application, a number of modifications and improvements can be made, which should also be considered as the protection scope of the present application, and these will not affect the effect and practicality of the present application. The protection scope of the present application should be subject to the content of its claims, and the specific implementation mode and the like in the specification can be used to explain the content of the claims.

Claims

1. A cabinet door locking device of a high-voltage power distribution cabinet, comprising a power distribution cabinet body (1) and a cabinet door (2), characterized in that, The first fixed block (3) is fixed to one side of the inner wall of the power distribution cabinet body (1), one side of the cabinet door (2) is fixedly connected with the second fixed block (4), the first fixed block (3) corresponds to the second fixed block (4), the second fixed block (4) is internally provided with a movable cavity (5), the inner wall of the movable cavity (5) is slidably connected with a rack (6), the inner wall of the movable cavity (5) is fixedly connected with a limiting spring (7), the other end of the limiting spring (7) is fixedly connected with one end of the rack (6), one side of the first fixed block (3) is provided with a limiting groove (8), the rack (6) is inserted into the limiting groove (8), the inner wall of the movable cavity (5) is rotatably connected with a gear (9), the gear (9) is engaged with the rack (6), one side of the cabinet door (2) away from the second fixed block (4) is provided with a through slot (10), the through slot (10) is communicated with the movable cavity (5), and the inner wall of the through slot (10) is provided with an anti-theft structure.

2. A high voltage switchgear cabinet door locking device according to claim 1, characterized in that: The anti-theft structure comprises a rotating block (11), the rotating block (11) is fixedly connected with the gear (9), one end of the rotating block (11) away from the gear (9) is provided with a special-shaped groove (12), the inner wall of the through slot (10) is provided with symmetrical movable grooves (13), the inner wall of the movable groove (13) is slidably connected with a protection block (14), the inner wall of the movable groove (13) is fixedly connected with a first spring (15), and the other end of the first spring (15) is fixedly connected with the protection block (14).

3. The door locking device of a high voltage switchgear according to claim 1, characterized in that: The upper surface of the second fixed block (4) is fixedly connected with a vertical block (16), the inside of the vertical block (16) is provided with a moving groove (17), the moving groove (17) is communicated with the movable cavity (5), the inner wall of the moving groove (17) is slidably connected with a sliding rod (18), the upper surface of the rack (6) is provided with a clamping groove (19), the sliding rod (18) is inserted into the clamping groove (19), one side of the cabinet door (2) is provided with a sliding groove (20), the inner wall of the sliding groove (20) is slidably connected with a push rod (21), and the push rod (21) is fixedly connected with the outer wall of the sliding rod (18).

4. The door locking device of a high voltage switchgear according to claim 1, characterized in that: One side of the first fixed block (3) close to the cabinet door (2) is provided with a circular groove (22), the inner wall of the circular groove (22) is fixedly connected with a second spring (23), the other end of the second spring (23) is fixedly connected with an abutting block (24), the abutting block (24) is slidably connected to the inner wall of the circular groove (22), and the abutting block (24) abuts against one side of the cabinet door (2).

5. A high voltage switchgear door interlock device according to claim 1, wherein: The first fixed block (3) and the second fixed block (4) are made of insulating plastic, and the outer walls of the power distribution cabinet body (1) and the cabinet door (2) are coated with insulating paint.

6. A high voltage switchgear door interlock according to claim 1, wherein: The inner wall of the through slot (10) is inserted with a key (25), and the key (25) is made of insulating material.

7. The door locking device of a high voltage switchgear according to claim 2, characterized in that: The side of the protection block (14) facing the opening of the through slot (10) is provided with an inclined surface.

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