An automatic locking device for the control hole of a central cabinet

Abstract

This utility model discloses an automatic locking device for the operating hole of a central cabinet, belonging to the technical field of central cabinet equipment. It addresses the problems of low automation and poor locking stability in cabinet door locking methods. The device includes a central cabinet body and a cabinet door. Support legs are provided at the bottom of the central cabinet body. A hinge is connected to the cabinet door, which is hinged to the front of the central cabinet body. A locking rod is fixedly connected to the right side of the cabinet door. A locking mechanism is provided on the central cabinet body corresponding to the locking rod. A lock slot is provided on the locking rod. The cabinet door is locked at the front of the central cabinet body through the locking rod and the locking mechanism. This utility model, through its locking mechanism, applies a certain force to the cabinet door during locking operations, causing the door to automatically lock the locking rod within the locking mechanism. This ensures the stability of the cabinet door locking, and its locking structure is simple, convenient for real-time operation, and improves the practicality of the device.

Description

Technical Field

[0001] This utility model belongs to the technical field of central cabinet equipment, specifically relating to an automatic locking device for the operating hole of a central cabinet. Background Technology

[0002] Medium-voltage switchgear, also known as metal-clad medium-voltage withdrawable switchgear, is a type of high-voltage power distribution equipment. It is mainly used in power plants for power transmission from small and medium-sized generators, power receiving and transmission in secondary substations of power systems, power distribution in industrial and mining enterprises, and starting of large high-voltage motors.

[0003] An existing patent, CN222234220U, describes an automatic locking device for the operating hole of a central cabinet. This patent includes a central cabinet body with a cabinet door hinged to its front. A mounting base is fixedly connected to one side of the central cabinet body. The mounting base has sliding grooves at its upper and lower ends, with a locking rod slidably connected inside each groove. A movable groove is formed inside the mounting base, and a locking structure is provided within the movable groove. A support base is fixedly connected to one side of the central cabinet body, and a locking rod is fixedly connected to one side of the cabinet door. By setting the locking structure, an automatic locking device for the operating hole of a central cabinet is achieved. The device can add an automatic locking structure to the outside of the central cabinet, giving the cabinet a double-layer lock and increasing the device's security. By setting a return spring, the device can easily complete the locking and unlocking. The structure is simple and easy to use, giving the central cabinet a double-layer protective structure and increasing the device's practicality. However, in actual use, there are still the following shortcomings: From a practical point of view, when locking the cabinet door, this patent is not convenient to realize the automatic locking operation of the cabinet door according to the position and movement of the cabinet door, and it cannot guarantee the stable locking of the cabinet door, which reduces its locking efficiency and locking stability.

[0004] Therefore, an automatic locking device for the central cabinet operating hole is needed to solve the problems of low automation and poor locking stability of the cabinet door locking method in the existing technology. Utility Model Content

[0005] The purpose of this utility model is to provide an automatic locking device for the operating hole of a central cabinet to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an automatic locking device for the operating hole of a central cabinet, comprising a central cabinet body and a cabinet door. The central cabinet body is provided with a support leg at its bottom. The cabinet door is connected to a hinge and is hinged to the front of the central cabinet body via the hinge. A locking rod is fixedly connected to the right side of the cabinet door. A locking mechanism is provided on the central cabinet body corresponding to the locking rod. A lock slot is provided on the locking rod. The cabinet door is locked at the front of the central cabinet body via the locking rod and the locking mechanism.

[0007] The solution specifies that the locking mechanism includes a fixed base, which is fixedly connected to the right side surface of the central cabinet body and positioned corresponding to the locking rod. The fixed base has a slot, and a movable plate is slidably mounted inside the slot. A second spring is fixedly connected to the left side of the movable plate, located within the fixed base. A connecting plate is fixedly connected to the right side of the movable plate, and a pressing block is fixedly connected to the connecting plate near the locking opening. A slider is fixedly connected to the movable plate, and the slider has a matching groove on the fixed base. The movable plate slides within the fixed seat via a slider and a groove. A locking block is slidably installed within the fixed seat via a groove. A fixed plate is fixedly connected to the locking block. The fixed plate has a matching limiting groove corresponding to the fixed seat. The locking block slides within the fixed seat via the fixed plate and the limiting groove. A guide rod is slidably installed through the fixed plate. The guide rod is fixedly connected within the limiting groove. A first spring is sleeved on the outside of the guide rod. A detachable limiting component is provided on the right side of the movable plate. The limiting component is used to lock and unlock the movable plate within the fixed seat in conjunction with the locking rod.

[0008] It is worth noting that the fixed base is C-shaped and has an opening on the right side, and the movable plate is cross-shaped.

[0009] Furthermore, it should be noted that there are two connecting plates on the movable plate, and the two connecting plates are symmetrically fixed to the upper and lower parts of the right side surface of the movable plate.

[0010] In a preferred embodiment, the extrusion block is arranged in the form of a triangular block.

[0011] In a preferred embodiment, two locking blocks are provided in the fixed base. The two locking blocks are symmetrically arranged between the two connecting plates. The side of the locking block near the pressing block is provided with an inclined surface that matches the pressing block. The other side of the locking block is provided with an inclined surface near the locking rod and is provided with a locking opening.

[0012] In a preferred embodiment, the limiting component includes a mounting groove, which is formed on the right side surface of the movable plate. A mounting plate is slidably installed in the mounting groove. A limiting plate is fixedly connected to the right side surface of the mounting plate, and a protrusion is fixedly connected to the right side of the mounting plate near the rear end.

[0013] In a preferred embodiment, the limiting plate is made of rubber material.

[0014] Compared with the prior art, the automatic locking device for the operating hole of the central cabinet provided by this utility model has at least the following beneficial effects:

[0015] By applying a certain force to the cabinet door during the locking operation, the door moves the locking rod to automatically lock itself within the locking mechanism, ensuring the stability of the door lock. Furthermore, the locking structure is simple, easy to implement in real time, and improves the practicality of the device. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a schematic diagram of the disassembled structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled locking mechanism of this utility model;

[0019] Figure 4 This is a partial disassembled structural diagram of the locking mechanism of this utility model.

[0020] In the diagram: 1. Main body of the central cabinet; 101. Support leg; 2. Cabinet door; 201. Hinge; 3. Locking mechanism; 301. Fixed base; 302. Slot; 303. Movable plate; 304. Slider; 305. Slide groove; 306. Connecting plate; 307. Pressing block; 308. Limiting component; 3081. Mounting groove; 3082. Mounting plate; 3083. Limiting plate; 3084. Protrusion; 309. Locking block; 3010. Fixed plate; 3011. Limiting groove; 3012. Guide rod; 3013. First spring; 3014. Second spring; 4. Locking rod; 401. Locking port. Detailed Implementation

[0021] The present invention will be further described below with reference to the embodiments.

[0022] Please see Figure 1-4 This utility model provides an automatic locking device for the operating hole of a central cabinet, including a central cabinet body 1 and a cabinet door 2. The bottom of the central cabinet body 1 is provided with a support leg 101. A hinge 201 is connected to the cabinet door 2. The cabinet door 2 is hinged to the front of the central cabinet body 1 through the hinge 201. A locking rod 4 is fixedly connected to the right side of the cabinet door 2. A locking mechanism 3 is provided on the central cabinet body 1 corresponding to the locking rod 4. A lock opening 401 is opened on the locking rod 4. The cabinet door 2 is locked at the front of the central cabinet body 1 through the locking rod 4 and the locking mechanism 3.

[0023] Further as Figure 2 , Figure 3 and Figure 4As shown, it is worth noting that the locking mechanism 3 includes a fixed base 301, which is fixedly connected to the right side surface of the central cabinet body 1 and is positioned corresponding to the locking rod 4. A slot 302 is provided inside the fixed base 301, and a movable plate 303 is slidably mounted inside the fixed base 301 via the slot 302. A second spring 3014 is fixedly connected to the left side of the movable plate 303 and is located inside the fixed base 301. The fixed base 301 is C-shaped and has an opening on the right side. The movable plate 303 is cross-shaped. A connecting plate 306 is fixedly connected to the right side of the movable plate 303. Two connecting plates 306 are provided on the movable plate 303, and the two connecting plates 306 are symmetrically fixedly connected to the upper and lower parts of the right side surface of the movable plate 303. A pressing block 307 is fixedly connected to the connecting plate 306 near the locking hole 401. The pressing block 307 is a triangular block. A slider 304 is fixedly connected to the movable plate 303. The slider 304 is provided with a matching groove 305 on the fixed seat 301. The movable plate 303 is connected to the slider 304 and... The slide groove 305 is limited to sliding within the fixed base 301. A locking block 309 is slidably disposed within the fixed base 301 via a slot 302. A fixed plate 3010 is fixedly connected to the locking block 309. The fixed plate 3010 has a matching limiting groove 3011 corresponding to the fixed base 301. The locking block 309 is limited to sliding within the fixed base 301 via the fixed plate 3010 and the limiting groove 3011. Two locking blocks 309 are disposed within the fixed base 301, symmetrically positioned vertically between two connecting plates 306. Block 309 has a beveled surface on the side near the extrusion block 307 that matches the extrusion block 307. On the other side of the locking block 309, a beveled surface is provided near the locking rod 4 and is provided to match the locking port 401. A guide rod 3012 is slidably provided on the fixed plate 3010. The guide rod 3012 is fixedly connected in the limiting groove 3011. A first spring 3013 is sleeved on the outside of the guide rod 3012. A detachable limiting component 308 is provided on the right side of the movable plate 303. The limiting component 308 is used to lock and open the locking rod 4 in the fixed seat 301.

[0024] In use, the locking rod 4 presses against the inclined surface of the locking block 309, causing the locking block 309 to slide within the slot 302 via the fixed plate 3010. This facilitates the movement of the locking rod 4 to the left side of the locking block 309. When the locking rod 4 reaches the limiting component 308, it pushes the movable plate 303, causing it to slide within the slot 302 via the slider 304 and compress the second spring 3014. The sliding of the movable plate 303 causes the connecting... The connecting plate 306 drives the pressing block 307 to slide to the left, thereby pressing the locking block 309 on one side through the pressing block 307. This causes the locking block 309 to slide in the slot 302 near the lock opening 401 through the fixing plate 3010. The locking block 309 is locked in the lock opening 401 by sliding and engaging, thereby achieving the locking and limiting operation of the locking rod 4. This ensures the cabinet door 2 is closed stably. Furthermore, the pressing of the movable plate 303 by the locking rod 4 ensures the stable limiting of the locking block 309 within the lock opening 401.

[0025] Further as Figure 2 , Figure 3 and Figure 4 As shown, it is worth noting that the limiting component 308 includes a mounting groove 3081, which is formed on the right side surface of the movable plate 303. A mounting plate 3082 is slidably installed in the mounting groove 3081. A limiting plate 3083 is fixedly connected to the right side surface of the mounting plate 3082. A protrusion 3084 is fixedly connected to the right side of the mounting plate 3082 near the rear end. The limiting plate 3083 is made of rubber material.

[0026] In use, by pulling the protrusion 3084, the mounting plate 3082 causes the limiting plate 3083 to slide within the mounting groove 3081, thereby causing the mounting groove 3081 to disengage from the left side of the locking rod 4, creating a gap between the locking rod 4 and the movable plate 303. At this time, under the elastic force of the second spring 3014, the movable plate 303 slides towards the side of the locking rod 4, causing the pressing block 307 to slide against the locking block 309, so that the pressing block 307 no longer presses against the locking block 309. Under the action of the first spring 3013, the locking block 309 slides away from the lock opening 401, thereby releasing the locking block 309 from the lock opening 401, making it easier to open the cabinet door 2 and allow the locking rod 4 to disengage from the fixed seat 301.

[0027] This solution has the following working process: When this device is used, when closing the cabinet door 2, the locking rod 4 moves to the opening of the positioning fixing seat 301 and inserts into the fixing seat 301. When the locking rod 4 moves into the fixing seat 301, the locking rod 4 presses against the inclined surface of the locking block 309, causing the locking block 309 to slide a certain amount through the fixing plate 3010 in the slot 302, thereby facilitating the movement of the locking rod 4 to the left side of the locking block 309. When the locking rod 4 moves to contact the limiting component 308... At this time, the locking rod 4 pushes the movable plate 303, causing the movable plate 303 to slide inside the slot 302 via the slider 304, and compressing the second spring 3014. Under the sliding of the movable plate 303, the connecting plate 306 drives the pressing block 307 to slide to the left, thereby pressing one side of the locking block 309 through the pressing block 307. This causes the locking block 309 to be compressed and slide within the slot 302 near the lock opening 401 via the fixed plate 3010, thus... The locking lever 4 is locked and limited by sliding within the lock opening 401, thereby stably closing the cabinet door 2. Furthermore, the locking lever 4's pressure on the movable plate 303 ensures the stable limiting of the locking block 309 within the lock opening 401. When unlocking the locking lever 4, pulling the protrusion 3084 causes the mounting plate 3082 to slide within the mounting groove 3081, disengaging the mounting groove 3081 from the left side of the locking lever 4, thus allowing the locking lever 4 and the movable plate 303 to... A gap is formed. At this time, under the elastic force of the second spring 3014, the movable plate 303 slides close to the locking rod 4, thereby causing the pressing block 307 and the locking block 309 to slide. This causes the pressing block 307 to stop pressing the locking block 309. Under the action of the first spring 3013, the locking block 309 slides away from the lock opening 401, thereby releasing the locking block 309 from the lock opening 401. This makes it easier to open the cabinet door 2 and allow the locking rod 4 to disengage from the fixed seat 301.

[0028] In summary: By using the locking mechanism 3, when locking the cabinet door 2, a certain force is applied to the cabinet door 2, causing the cabinet door 2 to drive the locking rod 4 to automatically lock in the locking mechanism 3. This ensures the stability of the cabinet door 2's locking, and its locking structure is simple, convenient for real-time operation, and improves the practicality of the device.

Claims

1. An automatic locking device for the operating hole of a metal-clad switchgear, comprising a metal-clad switchgear body (1) and a door (2), characterized in that: The bottom of the central cabinet body (1) is provided with a support leg (101), and the cabinet door (2) is connected with a hinge (201). The cabinet door (2) is hinged to the front of the central cabinet body (1) through the hinge (201). A locking rod (4) is fixedly connected to the right side of the cabinet door (2). A locking mechanism (3) is provided on the central cabinet body (1) corresponding to the locking rod (4). A lock slot (401) is opened on the locking rod (4). The cabinet door (2) is locked at the front of the central cabinet body (1) through the locking rod (4) and the locking mechanism (3). The locking mechanism (3) includes a fixed base (301), which is fixedly connected to the right side surface of the central cabinet body (1) and is set at the corresponding position of the locking rod (4). A slot (302) is provided in the fixed base (301). A movable plate (303) is slidably arranged inside the fixed base (301) through the slot (302). A second spring (3014) is fixedly connected to the left side of the movable plate (303). The second spring (3014) is located in the fixed base (301). A connecting plate (306) is fixedly connected to the right side of the movable plate (303). A pressing block (307) is fixedly connected to the side of the connecting plate (306) near the lock opening (401). A slider (304) is fixedly connected to the movable plate (303). The slider (304) is located on the fixed base (301) and has a matching groove (305). The movable plate (303) is connected to the slider (304) through the groove. (305) A locking block (309) is slidably positioned within a fixed base (301). A locking block (309) is slidably positioned within the fixed base (301) through a slot (302). A fixing plate (3010) is fixedly connected to the locking block (309). A matching limiting groove (3011) is provided in the fixing plate (301) corresponding to the fixed base (301). The locking block (309) is positioned within the fixed base (301) through the fixing plate (3010) and the limiting groove (3011). 1) Inner limiting sliding: A guide rod (3012) is slidably provided on the fixed plate (3010). The guide rod (3012) is fixedly connected in the limiting groove (3011). A first spring (3013) is sleeved on the outside of the guide rod (3012). A detachable limiting component (308) is provided on the right side of the movable plate (303). The limiting component (308) is used to cooperate with the locking rod (4) to lock and open it in the fixed seat (301).

2. The automatic locking device for operating hole of cubicle according to claim 1, characterized in that: The fixed base (301) is C-shaped and has an opening on the right side, while the movable plate (303) is cross-shaped.

3. The automatic locking device for the operating hole of a central cabinet according to claim 2, characterized in that: Two connecting plates (306) are provided on the movable plate (303), and the two connecting plates (306) are symmetrically fixedly connected to the upper and lower parts of the right side surface of the movable plate (303).

4. The automatic locking device for the operating hole of a central cabinet according to claim 3, characterized in that: The extrusion block (307) is arranged in the form of a triangular block.

5. The automatic locking device for the operating hole of a central cabinet according to claim 4, characterized in that: Two locking blocks (309) are provided in the fixed base (301). The two locking blocks (309) are symmetrically arranged between the two connecting plates (306). The side of the locking block (309) near the pressing block (307) is provided with a slope that matches the pressing block (307). The other side of the locking block (309) near the locking rod (4) is provided with a slope that matches the locking port (401).

6. The automatic locking device for the operating hole of a central cabinet according to claim 5, characterized in that: The limiting component (308) includes a mounting groove (3081), which is opened on the right side surface of the movable plate (303). A mounting plate (3082) is slidably installed in the mounting groove (3081). A limiting plate (3083) is fixedly connected to the right side surface of the mounting plate (3082). A protrusion (3084) is fixedly connected to the right side of the mounting plate (3082) near the rear end.

7. The automatic locking device for the operating hole of a central cabinet according to claim 6, characterized in that: The limiting plate (3083) is made of rubber material.

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