Low-voltage switch cabinet
Through the combined locking structure and the terminal locking structure, the synchronous locking and unlocking of multiple cabinet doors in the low-voltage switch cabinet is achieved, which solves the cumbersome key unlocking problem in the existing technology and improves the operating efficiency and emergency response capabilities in emergency situations.
Patent Information
- Application Number
- CN202422494337.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-15
- Publication Date
- 2025-09-16
- Estimated Expiration
- 2034-10-15
AI Technical Summary
When multiple doors of existing low-voltage switchgear need to be opened simultaneously, cumbersome key unlocking operations are required, resulting in inconvenience in operation.
A combined locking structure is used to link a row of cabinet doors vertically together. All cabinet doors can be locked and unlocked synchronously by turning the handle and locking slide. The terminal locking structure restricts the cabinet doors away from the locking hole to achieve rapid opening and closing.
It simplifies the simultaneous opening and closing of multiple cabinet doors, improves operational efficiency, reduces the tedious steps of key unlocking, and can quickly open all cabinet doors especially in an emergency.
Smart Images
Figure CN223348209U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of switchgear, and in particular to a low-voltage switchgear. Background Art
[0002] The primary function of switchgear is to open and close, control, and protect electrical equipment during power generation, transmission, distribution, and conversion in power systems. The components within a switchgear primarily include circuit breakers, disconnectors, load switches, operating mechanisms, transformers, and various protective devices. Switchgear can be categorized in many ways, such as by circuit breaker mounting method: removable and fixed; by cabinet structure: open, metal-enclosed, and metal-clad; and by voltage level: high-voltage and low-voltage.
[0003] AC1000V and below are usually called low-voltage switchgear. Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgy, textile, high-rise buildings and other industries. Low-voltage switchgear is mainly composed of a switchgear cabinet and components installed in the switchgear cabinet to perform various functions. The switchgear cabinet includes a cabinet body and a cabinet door. The cabinet body is divided into multiple cabinet spaces with an opening facing the same side. Each cabinet space can be installed with different components to achieve different functions or be controlled separately according to different power distribution plan requirements. There are multiple cabinet doors, and the multiple cabinet doors correspond to multiple cabinet spaces one by one and close the corresponding cabinet spaces. One side of the cabinet door is rotatably connected to the cabinet body, and a matching locking structure is set between the other side and the cabinet body.
[0004] Each door of an existing low-voltage switchgear cabinet is often equipped with a locking structure so that the door can be locked and opened when needed. Each door has its own independent lock, but in some cases, it may be necessary to open multiple or even all doors to perform corresponding operations. At this time, each door needs to be unlocked and opened, which is very inconvenient. Utility Model Content
[0005] In order to avoid the tedious key unlocking operation of each cabinet door when multiple cabinet doors need to be opened at the same time, the present application provides a low-voltage switch cabinet.
[0006] The low-voltage switchgear provided in this application adopts the following technical solution:
[0007] 14. The door lock assembly as claimed in claim 13, wherein the locking mechanism comprises a lock core, a lock member and a locking mechanism for locking the locking member. The lock core comprises a lock member and a locking mechanism for locking the locking member. The lock member comprises a lock core, a lock member and a locking mechanism for locking the locking member. The lock member comprises a lock core, a lock member and a locking mechanism for locking the locking member. The lock member comprises a lock core, a lock member and a locking mechanism for locking the locking member. The lock member comprises a lock core, a lock member and a locking mechanism for locking the locking member. The lock member comprises a lock core, a lock member and a locking mechanism for locking the locking member.
[0008] By adopting the above technical solution, a vertical row of cabinet doors are linked together through a combined locking structure, and one of the cabinet doors is inserted into the locking hole through a locking slide, so that one cabinet door is fixed to the cabinet body. Since all the cabinet doors are linked to each other, all the cabinet doors are locked to the cabinet body, and the cabinet door opening process is completed by turning the handle, and the terminal locking structure limits the locking slide on the cabinet door farthest from the locking hole, thereby ultimately limiting all the locking slides to maintain the association state between all the cabinet doors and the locked state with the cabinet body. During the unlocking process, you only need to unlock the terminal locking structure to unlock all the cabinet doors, and you only need to turn the handle to drive the locking slide of each cabinet door back to its position to complete the opening of all the cabinet doors.
[0009] Optionally, the cabinet body is provided with a sliding slot that exposes the locking hole, and the sliding slot allows the locking slide in the locking hole to escape. The cabinet body is installed with a closing plate that closes the sliding slot, and the sliding slot is maintained in a closed state by a door lock structure between the closing plate and the cabinet body.
[0010] By adopting the above technical solution, after the terminal locking structure is unlocked and operates to a state where it does not restrict the cabinet door, the closing plate is unlocked and slid to a state where it no longer restricts the locking slide column. At this time, all cabinet doors can be opened and locked at the same time. At this time, the joint locking structure mainly plays the role of linking each cabinet door. When all cabinet doors need to be opened, all cabinet doors can be quickly opened and subsequently closed.
[0011] Optionally, the terminal locking structure includes a terminal block, which is slidably mounted on the cabinet body and can slide into the vertical slideway, and the vertical slideway for the terminal block to slide into is provided with a movable slot for the terminal block to escape.
[0012] By adopting the above technical solution, the terminal locking structure mainly restricts the movement of the locking slide column. When the cabinet door needs to be opened urgently without a key, the door can be opened in a destructive manner because only one end of the cabinet door is restricted.
[0013] Optionally, an elastic snap-fit structure is provided between the cabinet door and the cabinet body.
[0014] By adopting the above technical solution, each door has an elastic snap-fit structure, so that after being unlocked, the cabinet door will not open by itself, which is convenient for relocking the middle cabinet door or several cabinet doors without taking into account other cabinet doors when opening them separately.
[0015] Optionally, a plug post is provided at one end of the rotating handle, the cabinet door is provided with a rotating gear groove connected to the vertical slide, a gear is provided in the rotating gear groove, the gear is engaged with the locking slide post, and the plug post passes through the cabinet door and is fixed to the gear.
[0016] By adopting the above technical solution, the gear is driven to rotate by turning the handle, and the gear then drives the locking slide column to slide vertically. The gear rack is engaged, so the position control accuracy of the locking slide column is higher, the positioning is more accurate, and errors are less likely to occur during operation.
[0017] Optionally, a limiting block is slidably installed on the cabinet door, and the limiting block is provided with a limiting hole for inserting the rotating handle. When the rotating handle is plugged into and engaged with the limiting block, the limiting block limits the rotation of the rotating handle, and the locking slide is completely located in the vertical slide corresponding to the cabinet door.
[0018] By adopting the above technical solution, the presence of the limiting block can keep the position of the rotating handle stable when the rotating handle is rotated to the unlocking cabinet door state, thereby facilitating the subsequent opening of the cabinet door or re-locking the cabinet door, and limiting the locking slider from automatically running to a state where the cabinet doors are interconnected.
[0019] Optionally, the rotating gear groove is exposed on the inner side of the cabinet door, the plug column is connected to the gear key and a limiting nut is threadedly installed on the end of the plug column to limit the disengagement of the gear. The limiting block is matched with the cabinet door through a T-shaped slide rail and a slide groove and can be slid and removed. The limiting block is provided with a hexagonal hole for embedding the limiting nut.
[0020] By adopting the above technical solution, the limiting block can be unnecessary, and the limiting block can be used as a tool for installing and removing the gear and the rotating handle.
[0021] Optionally, one end of the limiting block horizontally overhangs outside the cabinet door, the hexagonal hole is opened at the end of the limiting block away from the cabinet door, and the hexagonal hole is opened on the outer side wall of the limiting block and passes through the limiting block.
[0022] By adopting the above technical solution, the limiting block is more convenient and labor-saving when used to dismantle and install the limiting nut.
[0023] To sum up, through the combined locking structure, a row of cabinet doors in a vertical direction are linked together, and one of the cabinet doors is inserted into the locking hole through the locking slide, so that one cabinet door is fixed to the cabinet body. Since all the cabinet doors are linked to each other, all the cabinet doors are locked to the cabinet body, and the opening process of the cabinet door is completed by turning the handle, and the terminal locking structure limits the locking slide on the cabinet door farthest from the locking hole, thereby ultimately limiting all the locking slides to maintain the association state between all the cabinet doors and the locked state with the cabinet body. During the unlocking process, you only need to unlock the terminal locking structure to unlock all the cabinet doors. You only need to turn the handle in turn to drive the locking slide of each cabinet door back to its position to complete the opening of all the cabinet doors. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 is a structural diagram of a switch cabinet in an embodiment of the present application;
[0025] Figure 2 It is a structural diagram of the cabinet body in the embodiment of the present application;
[0026] Figure 3 Schematic diagram of the structure of the cabinet door in the embodiment of the present application;
[0027] Figure 4 yes Figure 1 Enlarged view of point A in the middle;
[0028] Figure 5 yes Figure 1 Enlarged view of point B in the middle;
[0029] Figure 6 is a cross-sectional view of the installation structure of the closing plate in an embodiment of the present application;
[0030] Figure 7 It is a cross-sectional view of the installation structure of the terminal block in the embodiment of the present application.
[0031] Explanation of the accompanying drawings: 1. Cabinet body; 2. Cabinet body; 21. Structural block; 22. Locking hole; 23. Slide-out slot; 24. Terminal slide; 25. Movable slot; 3. Cabinet door; 31. Vertical slide; 32. Rotating gear groove; 4. Accommodating cavity; 5. Combined locking structure; 51. Turning handle; 511. Insert column; 512. Limiting column; 52. Locking slide column; 53. Associated components; 531. Gear; 532. Limiting nut; 54. Limiting block; 541. Limiting hole; 542. Hexagonal hole; 6. Terminal locking structure; 61. Terminal block; 7. Elastic snap-fit structure; 8. Closing plate; 81. Locking block; 82. Locking hole. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-7 This application is described in further detail.
[0033] An embodiment of the present application discloses a low-voltage switchgear.
[0034] Reference Figure 1 and Figure 2 A low-voltage switchgear includes a cabinet body 1 and components installed in the cabinet body 1. The cabinet body 1 includes a cabinet body 2 and a cabinet door 3. The cabinet body 2 is provided with a plurality of accommodating cavities 4. The plurality of accommodating cavities 4 are open to one side. Each accommodating cavity 4 is installed with the same or different components according to different control functions and arrangements. In this embodiment, there are six accommodating cavities 4, and every three accommodating cavities 4 form a row and are opened at equal distances along the vertical direction. The two rows of accommodating cavities 4 are arranged on both sides to finally form an array arrangement.
[0035] Reference Figure 2 and Figure 3 When the cabinet door 3 is rotated and closed, the elastic clamping structure 7 is fixed to the inner wall of the other side of the cabinet door 3 and the cabinet body 2. When the cabinet door 3 is rotated and closed, the elastic clamping structure 7 first enters the accommodating cavity 4 and contacts the inner wall of the accommodating cavity 4. The friction force generated by the contact between the elastic clamping structure 7 and the inner wall of the accommodating cavity 4 limits the cabinet door 3 from flipping over and opening by itself. In order to facilitate the elastic clamping structure 7 to enter the accommodating cavity 4, the end of the elastic clamping structure 7 away from the cabinet door 3 can adopt an arc surface.
[0036] Reference Figure 3 and Figure 4The combined locking structure 5 specifically includes a rotating handle 51, a locking slide 52 and an associated component 53. The rotating handle 51 is rotatably installed on the cabinet door 3. The cabinet door 3 is vertically penetrated with a vertical slide 31 for the sliding installation of the locking slide 52. The rotating handle 51 rotates and drives the locking slide 52 to slide in and out of the vertical slide 31 through the associated component 53. The associated component 53 specifically includes a gear 531 and a limiting nut 532. A plug 511 is provided at one end of the rotating handle 51 in the length direction. The plug 511 is cylindrical and the axial direction is perpendicular to the length direction of the rotating handle 51. The cabinet door 3 is opened toward the inner side wall of the accommodating cavity 4. There is a rotating gear groove 32 connected to the vertical slide 31, and the column 511 passes through the cabinet door 3 and enters the rotating gear groove 32. A gear 531 is provided in the rotating gear groove 32. The column 511 is coaxial with the gear 531 and is key-connected to the gear 531, so that the rotation of the handle 51 can drive the gear 531 to rotate, and the gear 531 is engaged with the locking slide column 52 to form a gear rack connection, and the column 511 passes through one end of the gear 531 and is provided with an external thread and is threadedly connected to the limiting nut 532, so that the limiting nut 532 can limit the outward movement of the gear 531. After the limiting nut 532 is installed, it partially protrudes from the inner wall of the cabinet door 3.
[0037] At the same time, the length of the above-mentioned locking slide 52 is consistent with the length of the vertical slide 31. In another embodiment, a transmission tooth can be added between the gear 531 and the locking slide 52, so that when the handle 51 is rotated downward, the locking slide 52 also moves downward, which is more in line with the expected operation.
[0038] A limiting block 54 is slidably installed on the cabinet door 3. The limiting block 54 cooperates with the cabinet door 3 through a T-shaped slide rail and a slide groove and can be slid and removed. One end of the limiting block 54 horizontally protrudes outside the cabinet door 3, and the end of the limiting block 54 away from the cabinet door 3 is provided with a hexagonal hole 542 for inserting the limiting nut 532. The hexagonal hole 542 is opened on the outer wall of the limiting block 54 and passes through the limiting block 54, so that after the limiting block 54 is removed, it can be used to remove and install the limiting nut 532. Turn the handle 51 away from the end of the plug post 511. The end surface is integrally provided with a limiting column 512, and the limiting block 54 is provided with a limiting hole 541 for the limiting column 512 on the rotating handle 51 to be inserted. When the rotating handle 51 is rotated to a horizontal state, the limiting column 512 of the rotating handle 51 can be inserted into the limiting block 54 by sliding the limiting block 54. At this time, the limiting block 54 limits the rotation of the rotating handle 51, and the locking slide column 52 is completely in the vertical slide 31 of the corresponding cabinet door 3, that is, the upper and lower ends of the locking slide column 52 do not protrude from the upper and lower side walls of the cabinet door 3.
[0039] Reference Figure 1 、 Figure 5 and Figure 6In order to provide downward movement space for the locking slide post 52 on the lowest cabinet door 3, the cabinet body 2 is provided with a structural block 21 below the cabinet body 2 corresponding to the cabinet door 3. The structural block 21 is vertically corresponding to the cabinet door 3. The structural block 21 is provided with a locking hole 22 for inserting the locking slide post 52. The side wall of the structural block 21 and the accommodating cavity 4 facing the same direction is provided with a sliding slot 23 that exposes the locking hole 22. The sliding slot 23 is used for the locking slide post 52 in the locking hole 22 to escape. The cabinet body 2 is installed with a closing plate 8 that closes the sliding slot 23. The closing plate 8 and the cabinet body 2 are kept in contact with each other through the door lock structure. The closed state of the slide-out slot 23 is specifically, a locking block 81 is installed in the structural block 21 for horizontal sliding. The locking block 81 is partially exposed outside the structural block 21 and is installed with a lock core. The lock block 81 can be unlocked by a key to determine whether it can slide in the structural block 21, and the closing block is provided with a lock hole 82 for inserting the locking block. When the locking block 81 is partially inserted into the closing block, the closing block can maintain the closed state of the slide-out slot 23. When the lock block 81 is unlocked by the key and slides to be no longer associated with the closing block, the lock block 81 can be removed and no longer restricts the locking slide post 52 from being separated from the locking hole 22.
[0040] At the same time, in order to prevent the locking slide 52 from interfering with the hole wall of the locking hole 22, the space on the side of the locking hole 22 close to the cabinet door 3 for rotational connection is larger so that there is a certain distance between it and the locking slide 52. In order to facilitate the setting of the door lock structure, the height of the sliding slot 23 is greater than the height of the locking hole 22, thereby covering the area of the structural block 21 where the locking hole 22 is not opened.
[0041] Reference Figure 1 and Figure 7 The terminal locking structure 6 includes a terminal block 61, which is slidably mounted on the cabinet body 2 and can slide into the vertical slide 31. In this embodiment, the terminal locking structure 6 is arranged on the upper side of the cabinet body 2, and the locking hole 22 is located on the lower side of the cabinet body 2. In order to install the terminal locking structure 6, a structural block 21 is also provided on the upper side of the cabinet body 2. The structural block 21 on the upper side of the cabinet body 2 is vertically penetrated to form a terminal slide 24 for sliding installation of the terminal block 61, and the locking between the terminal block 61 and the cabinet body 2 is also achieved through the door lock structure. To achieve this, specifically, the door lock structure is installed on the structural block 21 on the upper side of the cabinet body 2, and the terminal block 61 has a hole facing one side of the door lock structure. The lock tongue of the door lock structure extends into the terminal block 61 to limit the sliding of the terminal block 61. At the same time, the terminal block 61 for the lock tongue of the door lock structure to extend into the hole can be opened into two corresponding states, one is that the terminal block 61 extends into the vertical slide 31 to lock the cabinet door 3, and the other is that the terminal block 61 is completely separated from the vertical slide 31, and the terminal block 61 no longer locks the cabinet door 3.
[0042] At the same time, the length of the above-mentioned terminal block 61 is greater than the terminal slide 24. When the terminal block 61 fills the vertical slide 31, the upper end of the terminal block 61 always partially protrudes from the cabinet body 2, so that the terminal block 61 can always be manually displaced or even taken out and replaced when needed.
[0043] When the locking plate 8 is in the state of restricting the locking slide post 52, the terminal block 61 can move up a certain distance to no longer restrict the outward turning movement of the cabinet door 3.
[0044] In another embodiment, the terminal block 61 can also be inserted into the vertical slide 31 by horizontal sliding. Since the terminal block 61 can maintain the locked state of the cabinet door 3 under the action of gravity, the vertical sliding setting of the terminal block 61 is preferred.
[0045] In a further embodiment, the locking hole 22 can also be set on the upper structural block 21, and the terminal locking structure 6 is set on the lower structural block 21. In this case, the terminal block 61 can only enter the vertical slide 31 by horizontal sliding.
[0046] The implementation principle of a low-voltage switch cabinet in an embodiment of the present application is as follows: the bottom cabinet door 3 is kept locked to the cabinet body 2 by a locking slide 52, and adjacent cabinet doors 3 are connected by locking slides 52, and the top cabinet door 3 is filled with a vertical slide 31 by a terminal block 61, thereby limiting the upward movement of all locking slides 52, and finally achieving the locking of all cabinet doors 3. When unlocking, you only need to unlock the terminal block 61 to open all cabinet doors 3 in sequence.
[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.
Claims
1. A low-voltage switchgear, characterized in that: The invention comprises a cabinet (1) and components installed in the cabinet (1), wherein the cabinet (1) comprises a cabinet body (2) and a cabinet door (3), wherein the cabinet body (2) is provided with a plurality of accommodating cavities (4), wherein the plurality of accommodating cavities (4) are open toward one side, wherein the cabinet door (3) has a plurality of accommodating cavities (4), wherein one side of the cabinet door (3) is rotatably connected to the cabinet body (2), wherein the plurality of cabinet doors (3) correspond one to one to the accommodating cavities (4), wherein the cabinet door (3) rotates and closes the accommodating cavities (4), wherein a joint locking structure (5) is provided between vertically adjacent cabinet doors (3), wherein the cabinet body (2) is provided with a terminal locking structure (6), wherein the joint locking structure (5) comprises a rotating handle (51), a locking slide (52) and an associated component (53), The rotating handle (51) is rotatably mounted on the cabinet door (3), and a vertical slideway (31) for the sliding installation of the locking slide (52) is vertically penetrated through the cabinet door (3). The rotating handle (51) rotates and drives the locking slide (52) to slide in and out of the vertical slideway (31) through the associated component (53), and the length of the locking slide (52) is consistent with the length of the vertical slideway (31). The cabinet body (2) is provided with a locking hole (22) for the locking slide (52) to be inserted, and the locking hole (22) and the terminal locking structure (6) are respectively arranged at the upper and lower parts of the cabinet body (2), and the terminal locking structure (6) fills the nearest vertical slideway (31) and locks it.
2. A low-voltage switchgear according to claim 1, characterized in that: The cabinet body (2) is provided with a slide-out slot (23) exposing the locking hole (22), and the slide-out slot (23) allows the locking slide (52) in the locking hole (22) to escape. The cabinet body (2) is provided with a closing plate (8) closing the slide-out slot (23), and a door lock structure is used between the closing plate (8) and the cabinet body (2) to maintain the closed state of the slide-out slot (23).
3. The low-voltage switchgear according to claim 1, characterized in that: The terminal locking structure (6) comprises a terminal block (61), which is slidably mounted on the cabinet body (2) and can slide into the vertical slideway (31), and the vertical slideway (31) for the terminal block (61) to slide into is provided with a movable slot (25) for the terminal block (61) to escape.
4. The low-voltage switchgear according to claim 1, characterized in that: An elastic snap-fit structure (7) is provided between the cabinet door (3) and the cabinet body (2).
5. The low-voltage switchgear according to claim 1, characterized in that: One end of the rotating handle (51) is provided with an insertion column (511), the cabinet door (3) is provided with a rotation gear groove (32) connected to the vertical slide (31), a gear (531) is provided in the rotation gear groove (32), the gear (531) is engaged with the locking slide column (52), and the insertion column (511) passes through the cabinet door (3) and is fixed to the gear (531).
6. The low-voltage switchgear according to claim 5, characterized in that: A limiting block (54) is slidably mounted on the cabinet door (3), and the limiting block (54) is provided with a limiting hole (541) for inserting the rotating handle (51). When the rotating handle (51) is plugged into and matched with the limiting block (54), the limiting block (54) limits the rotation of the rotating handle (51), and the locking slide column (52) is completely located in the vertical slideway (31) corresponding to the cabinet door (3).
7. The low-voltage switchgear according to claim 6, characterized in that: The rotating gear groove (32) is exposed on the inner side of the cabinet door (3), the plug post (511) is key-connected with the gear (531), and the end of the plug post (511) is threadedly installed with a limiting nut (532) for limiting the disengagement of the gear (531), the limiting block (54) is matched with the cabinet door (3) through a T-shaped slide rail and a slide groove and can be slid and removed, and the limiting block (54) is provided with a hexagonal hole (542) for the limiting nut (532) to be embedded.
8. The low-voltage switchgear according to claim 7, characterized in that: One end of the limiting block (54) is horizontally suspended outside the cabinet door (3), the hexagonal hole (542) is opened at the end of the limiting block (54) away from the cabinet door (3), and the hexagonal hole (542) is opened on the outer side wall of the limiting block (54) and passes through the limiting block (54).