A locking device for high-voltage switchgear

Abstract

This utility model relates to the field of high-voltage switchgear technology and discloses a locking device for high-voltage switchgear, including a cabinet body. The front of the cabinet body has a door, and the right side of the door is hinged to the right side of the cabinet body. A locking box is fixedly installed on the upper part of the front of the cabinet body, and multiple insert rods are movably sleeved at the bottom of the locking box. This utility model uses a combination of a limiting cover, a fixing block, a toothed ring, a protective cover, a knob, a second screw, a push plate, a push rod, and an arc-shaped toothed plate. When the cabinet door is opened, the cabinet door can drive the toothed ring to rotate around the hinge through the fixing block. At this time, the operator can drive the arc-shaped toothed plate to move through the knob, the second screw, the push plate, and the push rod, so that the teeth on the outer wall of the arc-shaped toothed plate mesh with the teeth on the inner wall of the toothed ring, which can limit the toothed ring and prevent it from rotating. At this time, the cabinet door cannot rotate, thus limiting the cabinet door and preventing the cabinet door from rotating or accidentally closing.

Description

Technical Field

[0001] This utility model relates to the field of high-voltage switchgear technology, and more specifically to a locking device for high-voltage switchgear. Background Technology

[0002] High-voltage switchgear is a complete set of electrical equipment used in power systems for power generation, transmission, distribution, and energy conversion, typically with voltage levels ranging from 3.6kV to 550kV. Electromagnetic locks are installed between the cabinet and the door of the high-voltage switchgear, allowing the door to be opened or closed. However, when the door is opened for maintenance of internal components, the lack of a limiting and fixing mechanism, as one side of the door is usually hinged to the cabinet, can cause the door to rotate or close accidentally, hindering maintenance work and requiring improvement. Utility Model Content

[0003] In order to overcome the above-mentioned defects of the prior art, the present invention provides a locking device for high-voltage switchgear to solve the problems existing in the background art.

[0004] This utility model provides the following technical solution: a locking device for a high-voltage switchgear, comprising a cabinet body, a cabinet door on the front of the cabinet body, the right side of the cabinet door being hinged to the right side of the cabinet body, a locking box fixedly installed on the upper part of the front of the cabinet body, multiple insert rods movably sleeved on the bottom of the locking box, multiple slots opened on the top of the cabinet door, the bottom end of the insert rods being inserted into the slots, a limiting mechanism provided on the upper right side between the cabinet body and the cabinet door, the limiting mechanism comprising a limiting cover, a fixing block, and a toothed ring, the center of the toothed ring being located directly above the center of the hinge, the bottom of the fixing block being fixedly installed on the right side of the top of the cabinet door, the inside of the fixing block being fixedly sleeved on the outer wall of the toothed ring, the bottom of the limiting cover being fixedly installed on the right side of the top of the cabinet body, the outer wall of the toothed ring being movably sleeved on the inside of the limiting cover, a limiting groove being opened on the right side of the inner wall of the limiting cover, an arc-shaped toothed plate being provided inside the limiting groove, the outer wall of the arc-shaped toothed plate being located on one side inside the toothed ring.

[0005] Furthermore, a geared motor is fixedly installed on the top of the inner wall of the locking box, and a No. 1 screw is fixedly installed on the output end of the geared motor through a coupling. The bottom end of the No. 1 screw is rotatably installed on the bottom of the inner wall of the locking box through a bearing. A pressure plate is provided at the bottom inside the locking box, and the middle part of the pressure plate is threaded to the outer wall of the No. 1 screw. The top ends of multiple insertion rods are fixedly connected to the bottom of the pressure plate.

[0006] Furthermore, two guide rods are symmetrically fixedly installed on the inner wall of the locking box, and the pressure plate is symmetrically slidably sleeved on the outer wall of the two guide rods.

[0007] Furthermore, an electromagnetic lock is fixedly embedded on the left side of the back of the cabinet door, and an iron block is fixedly embedded on the left side of the front of the cabinet body. The electromagnetic lock is located on the front of the iron block, and the electromagnetic lock and the iron block are magnetically connected.

[0008] Furthermore, a control panel and handle are fixedly installed on the left side of the front of the cabinet door, and multiple equipment mounting racks are fixedly installed inside the cabinet.

[0009] Furthermore, a protective cover is fixedly installed on the right side of the locking box, and a second screw is threaded onto the right side of the protective cover. A knob is fixedly installed on the right end of the second screw. A push plate is provided inside the protective cover. The left end of the second screw is rotatably installed in the middle of the right side of the push plate through a bearing. Push rods are fixedly installed at the four corners on the left side of the push plate. The outer wall of the push rod is slidably sleeved on the right side of the limiting cover. The left end of the push rod extends into the interior of the limiting groove and is fixedly installed on the right side of the arc-shaped toothed plate.

[0010] The technical effects and advantages of this utility model are as follows: 1. This utility model employs a combination of a limiting cover, a fixing block, a toothed ring, a protective cover, a knob, a No. 2 screw, a push plate, a push rod, and an arc-shaped toothed plate. When the cabinet door is opened, the fixing block drives the toothed ring to rotate around the hinge. At this time, the operator can drive the arc-shaped toothed plate to move via the knob, the No. 2 screw, the push plate, and the push rod, so that the teeth on the outer wall of the arc-shaped toothed plate mesh with the teeth on the inner wall of the toothed ring, thereby limiting the toothed ring and preventing it from rotating. In this case, the cabinet door cannot rotate, thus limiting the cabinet door and preventing it from rotating or closing accidentally.

[0011] 2. This utility model uses an electromagnetic lock and an iron block to facilitate the initial locking of the cabinet door. Through the cooperation of the locking box, the reduction motor, the No. 1 screw, the pressure plate, the insertion rod, the socket, and the guide rod, the bottom end of the insertion rod can be driven to insert into the socket at the top of the cabinet door, thereby further locking the cabinet door. At the same time, the top of the cabinet door is limited, increasing the firmness of the cabinet door when closed. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0013] Figure 2 This is a schematic diagram of the internal structure of the cabinet of this utility model.

[0014] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model.

[0015] Figure 4 This is a schematic diagram of the back structure of the cabinet door of this utility model.

[0016] Figure 5 This is a schematic diagram of the internal structure of the locking box of this utility model.

[0017] Figure 6 This is a cross-sectional view of the limiting cover and protective cover structure of this utility model.

[0018] The attached diagram is labeled as follows: 1. Cabinet body; 2. Cabinet door; 3. Locking box; 31. Gear motor; 32. No. 1 screw; 33. Pressure plate; 34. Insert rod; 35. Socket; 36. Guide rod; 4. Electromagnetic lock; 5. Iron block; 6. Control panel; 7. Handle; 8. Equipment mounting bracket; 9. Limiting mechanism; 91. Limiting cover; 92. Fixing block; 93. Gear ring; 94. Protective cover; 95. Knob; 96. No. 2 screw; 97. Push plate; 98. Push rod; 99. Arc-shaped gear plate. Detailed Implementation

[0019] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The interlocking device for high-voltage switchgear involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0020] Example 1: like Figure 1-6 As shown, a locking device for a high-voltage switchgear includes a cabinet 1. A cabinet door 2 is provided on the front of the cabinet 1. The right side of the cabinet door 2 is hinged to the right side of the cabinet 1. A limiting mechanism 9 is provided on the upper right side between the cabinet 1 and the cabinet door 2. The limiting mechanism 9 includes a limiting cover 91, a fixing block 92, and a toothed ring 93. The center of the toothed ring 93 is located directly above the center of the hinge. The bottom of the fixing block 92 is fixedly installed on the right side of the top of the cabinet door 2, and the inside of the fixing block 92 is fixedly sleeved on the outer wall of the toothed ring 93. The bottom of the limiting cover 91 is fixedly installed on the right side of the top of the cabinet 1, and the outer wall of the toothed ring 93 is movably sleeved on the inside of the limiting cover 91. The right side of the inner wall of the limiting cover 91... A limiting groove is provided on the side, and an arc-shaped toothed plate 99 is provided inside the limiting groove. The outer wall of the arc-shaped toothed plate 99 is located on one side inside the toothed ring 93. A protective cover 94 is fixedly installed on the right side of the locking box 3. A second screw 96 is threadedly connected to the right side of the protective cover 94. A knob 95 is fixedly installed on the right end of the second screw 96. A push plate 97 is provided inside the protective cover 94. The left end of the second screw 96 is rotatably installed in the middle of the right side of the push plate 97 through a bearing. Push rods 98 are fixedly installed at the four corners on the left side of the push plate 97. The outer wall of the push rod 98 is slidably sleeved on the right side of the limiting cover 91. The left end of the push rod 98 extends into the inside of the limiting groove and is fixedly installed on the right side of the arc-shaped toothed plate 99.

[0021] In this embodiment, when the cabinet door 2 is opened, the cabinet door 2 can drive the toothed ring 93 to rotate around the hinge via the fixing block 92. After the cabinet door 2 is opened, the operator can rotate the knob 95 and the second screw 96, and use the second screw 96 to push the push plate 97, push rod 98 and arc-shaped toothed plate 99 to move, so that the teeth on the outer wall of the arc-shaped toothed plate 99 mesh with the teeth on the inner wall of the toothed ring 93, thereby limiting the toothed ring 93 and preventing it from rotating. At this time, the cabinet door 2 can also not rotate, thus limiting the cabinet door 2 and facilitating the operator to inspect the equipment inside the cabinet 1.

[0022] Example 2: like Figure 1-6 As shown, a locking box 3 is fixedly installed on the upper front of the cabinet 1. Multiple insert rods 34 are movably connected to the bottom of the locking box 3. Multiple slots 35 are opened on the top of the cabinet door 2. The bottom ends of the insert rods 34 are inserted into the slots 35. A geared motor 31 is fixedly installed on the top of the inner wall of the locking box 3. The output end of the geared motor 31 is fixedly installed with a screw 32 through a coupling. The bottom end of the screw 32 is rotatably installed on the bottom of the inner wall of the locking box 3 through a bearing. A pressure plate 33 is provided at the bottom inside the locking box 3. The middle part of the pressure plate 33 is threadedly connected to the screw 32. The tops of multiple insertion rods 34 on the outer wall of the 32 are fixedly connected to the bottom of the pressure plate 33. Two guide rods 36 are symmetrically fixedly installed on the inner wall of the locking box 3. The inner wall of the pressure plate 33 is symmetrically slidably sleeved on the outer wall of the two guide rods 36. An electromagnetic lock 4 is fixedly embedded on the left side of the back of the cabinet door 2. An iron block 5 is fixedly embedded on the left side of the front of the cabinet body 1. The electromagnetic lock 4 is located on the front of the iron block 5. The electromagnetic lock 4 and the iron block 5 are magnetically connected. A control panel 6 and a handle 7 are fixedly installed on the left side of the front of the cabinet door 2. Multiple equipment mounting racks 8 are fixedly installed inside the cabinet body 1.

[0023] In this embodiment, the switchgear can be fixedly installed inside the cabinet 1 by setting the equipment mounting bracket 8. The control panel 6 has multiple output interfaces and can control multiple devices, including the geared motor 31 and the electromagnetic lock 4. The electromagnetic lock 4 cooperates with the iron block 5 to facilitate the initial locking of the cabinet door 2. The geared motor 31 can drive the first screw 32 to rotate. The first screw 32 drives the pressure plate 33 to move on the outer wall of the guide rod 36. The guide rod 36 can vertically guide the pressure plate 33. While the pressure plate 33 is moving, it can drive the bottom end of the insertion rod 34 to be inserted into the insertion slot 35 at the top of the cabinet door 2, thereby further locking the cabinet door 2.

[0024] In summary, as Figure 1-6As shown, this type of interlocking device for high-voltage switchgear allows for the following operation: When it is necessary to open cabinet door 2 to inspect the equipment inside cabinet 1, the operator can control the geared motor 31 via control panel 6. The output of the geared motor 31 drives the first screw 32 to rotate. The first screw 32, through pressure plate 33, moves the insertion rod 34 upwards, causing its bottom end to move out of the insertion port 35. The operator then controls the electromagnetic lock 4 via control panel 6 to close it, causing the electromagnetic lock 4 to lose its magnetic attraction with the iron block 5. The operator then opens cabinet door 2 via handle 7, causing the right side of cabinet door 2 to rotate around the hinge. Simultaneously, cabinet door 2, through fixing block 92, drives gear ring 93 to rotate around the hinge, and gear ring 93 moves inside limit cover 91. After opening cabinet door 2, the operator can rotate the second screw 96 via knob 95. The left end of 6 pushes the push plate 97, push rod 98 and arc-shaped toothed plate 99 to move, so that the teeth on the outer wall of the arc-shaped toothed plate 99 mesh with the teeth on the inner wall of the toothed ring 93, thereby limiting the toothed ring 93 and preventing it from rotating. At this time, the cabinet door 2 also cannot rotate, thus limiting the cabinet door 2. After the equipment inside the cabinet 1 is inspected, the staff rotates the knob 95 and the second screw 96 in the opposite direction, and drives the arc-shaped toothed plate 99 to move and reset in the same way. At this time, the limitation of the toothed ring 93 can be released. The staff then closes the cabinet door 2 and uses the electromagnetic lock 4 and iron block 5 to initially lock the cabinet door 2. Then, the output end of the reduction motor 31 drives the first screw 32 to rotate in the opposite direction, and drives the pressure plate 33 and the insertion rod 34 to move downward in the same way. The bottom end of the insertion rod 34 can be inserted into the insertion port 35 at the top of the cabinet door 2, thereby further locking the cabinet door 2.

[0025] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change. Secondly: The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made 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 locking device for a high-voltage switchgear, comprising a cabinet (1), characterized in that, The cabinet (1) has a cabinet door (2) on its front side. The right side of the cabinet door (2) is hinged to the right side of the cabinet (1). A locking box (3) is fixedly installed on the top of the front of the cabinet (1). Multiple insert rods (34) are movably sleeved on the bottom of the locking box (3). Multiple slots (35) are opened on the top of the cabinet door (2). The bottom end of the insert rod (34) is inserted into the slot (35). A limiting mechanism (9) is provided on the right side above the cabinet (1) and the cabinet door (2). The limiting mechanism (9) includes a limiting cover (91), a fixing block (92), and a toothed ring (93). 3) The center of the toothed ring (93) is located directly above the center of the hinge. The bottom of the fixing block (92) is fixedly installed on the right side of the top of the cabinet door (2). The inside of the fixing block (92) is fixedly sleeved on the outer wall of the toothed ring (93). The bottom of the limiting cover (91) is fixedly installed on the right side of the top of the cabinet (1). The outer wall of the toothed ring (93) is movably sleeved on the inside of the limiting cover (91). A limiting groove is opened on the right side of the inner wall of the limiting cover (91). An arc-shaped toothed plate (99) is provided inside the limiting groove. The outer wall of the arc-shaped toothed plate (99) is located on one side inside the toothed ring (93).

2. The locking device for high voltage switch cabinet according to claim 1, characterized in that: A geared motor (31) is fixedly installed on the top of the inner wall of the locking box (3). The output end of the geared motor (31) is fixedly installed with a screw (32) through a coupling. The bottom end of the screw (32) is rotatably installed on the bottom of the inner wall of the locking box (3) through a bearing. A pressure plate (33) is provided at the bottom inside the locking box (3). The middle part of the pressure plate (33) is threaded to the outer wall of the screw (32). The top ends of the multiple insertion rods (34) are fixedly connected to the bottom of the pressure plate (33).

3. The locking device for high voltage switchgear according to claim 2, characterized in that: The inner wall of the locking box (3) is symmetrically fixed with two guide rods (36), and the inside of the pressure plate (33) is symmetrically slidably sleeved on the outer wall of the two guide rods (36).

4. The locking device for high voltage switch cabinet according to claim 1, characterized in that: An electromagnetic lock (4) is fixedly embedded on the left side of the back of the cabinet door (2), and an iron block (5) is fixedly embedded on the left side of the front of the cabinet body (1). The electromagnetic lock (4) is located on the front of the iron block (5), and the electromagnetic lock (4) and the iron block (5) are magnetically connected.

5. The locking device for high voltage switchgear according to claim 1, characterized in that: A control panel (6) and a handle (7) are fixedly installed on the left side of the front of the cabinet door (2), and multiple equipment mounting racks (8) are fixedly installed inside the cabinet body (1).

6. The locking device for high voltage switchgear according to claim 1, characterized in that: A protective cover (94) is fixedly installed on the right side of the locking box (3). A second screw (96) is threaded onto the right side of the protective cover (94). A knob (95) is fixedly installed on the right end of the second screw (96). A push plate (97) is provided inside the protective cover (94). The left end of the second screw (96) is rotatably installed in the middle of the right side of the push plate (97) through a bearing. Push rods (98) are fixedly installed at the four corners on the left side of the push plate (97). The outer wall of the push rod (98) is slidably sleeved on the right side of the limiting cover (91). The left end of the push rod (98) extends into the inside of the limiting groove and is fixedly installed on the right side of the arc-shaped toothed plate (99).

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