Low-voltage switch cabinet with fireproof protection

Abstract

The utility model relates to the field of switch cabinet equipment, and discloses a low-voltage switch cabinet with fireproof protection. The cabinet comprises a shell and a cabinet door hinged to the shell, mounting plates, a stand column connected to the mounting plates in a sliding mode and a transverse rod used for being fixed to the stand column are fixedly arranged in the shell, mounting grooves are formed in the mounting plates, the mounting grooves are formed in the length directions of the mounting plates, and the transverse rod is fixed to the stand column. The stand column is slidably connected into a mounting groove in the mounting plate, a first fixing assembly is arranged on the stand column, a second fixing assembly is arranged on the cross rod, the first fixing assembly is used for fixing the stand column to the mounting plate, and the second fixing assembly is used for fixing the cross rod to the stand column. A first sliding groove used for containing the transverse rod is formed in the side face of the mounting plate, a second sliding groove used for being communicated with the first sliding groove is formed in the stand column, and the device has the effect that components can be conveniently mounted in the shell.

Description

Technical Field

[0001] This utility model relates to the field of switchgear equipment technology, and more specifically, to a low-voltage switchgear with fire protection. Background Technology

[0002] Fire-resistant low-voltage switchgear is designed for AC 50Hz, 380V power distribution systems, used for power conversion and control in power, lighting, and distribution applications. This product features high breaking capacity, good dynamic and thermal stability, flexible electrical design, convenient combination, strong series compatibility and practicality, and a novel structure. Furthermore, for fire protection, a temperature sensor is typically installed inside the cabinet to detect internal temperature and issue an alarm signal promptly.

[0003] Low-voltage switchgear typically houses multiple electrical components. In most technologically advanced low-voltage switchgear, there are mounting plates with through holes drilled into them. The mounting holes for electrical components match these through holes. However, most mounting plates are fixed inside the switchgear. Therefore, when workers need to install electrical components, they have to bend over or even crawl into the cabinet. Due to the limited space inside the cabinet, installing electrical components is very inconvenient. Utility Model Content

[0004] To address at least one of the aforementioned problems, this utility model provides a low-voltage switchgear with fire protection, comprising a housing and a door hinged to the housing. The housing is characterized by the following features: a mounting plate, a column slidably connected to the mounting plate, and a crossbar for fixing to the column are fixedly disposed within the housing. Each mounting plate has a mounting groove along its length. The column is slidably connected to the mounting groove on the mounting plate. A first fixing component is disposed on the column, and a second fixing component is disposed on the crossbar. The first fixing component fixes the column to the mounting plate, and the second fixing component fixes the crossbar to the column. A first sliding groove for placing the crossbar is provided on the side of the mounting plate along its length. A second sliding groove communicating with the first sliding groove is provided on the column along its length. The first and second sliding grooves communicate with each other, and the crossbar is slidably connected within the first sliding groove.

[0005] Optionally, the first fixing component includes a fixing block slidably connected to the column and a fixing spring fixed to the fixing block. The end of the fixing spring away from the fixing block is fixed to the column, and the fixing spring is used to push the fixing block to move upward. A fixing groove is formed on the inner wall of the mounting groove, and the fixing groove and the mounting groove are in communication. When the column slides into the housing and the fixing block on the column corresponds to the fixing groove, the fixing spring pushes the fixing block to move into the fixing groove to fix the position of the column.

[0006] Optionally, the mounting plate is provided with a pushing component, which is used to push the fixing block away from the fixing groove. A pushing spring is provided in the mounting groove, with one end of the pushing spring fixed to the inner wall of the mounting groove and the other end fixed to the column.

[0007] Optionally, the pushing assembly includes a pushing rod slidably connected to the mounting plate and a pushing surface disposed on the pushing rod. The pushing surface gradually slopes upward in a direction away from the cabinet door. A pushing groove is provided on the fixing block. The pushing rod passes through the pushing groove and slides within the pushing groove. The pushing surface abuts against the inner wall of the pushing groove.

[0008] Optionally, mounting blocks are fixedly installed at both ends of the crossbar, and a receiving groove is provided in the mounting block, with the second fixing component disposed in the receiving groove.

[0009] Optionally, the second fixing component includes a mounting rod slidably connected to the mounting block, a mounting plate fixed to the mounting rod, a fixing strip fixed to the mounting rod, and a locking spring sleeved on the mounting rod. One end of the locking spring is fixed to the mounting plate, and the other end is fixed to the inner wall of the receiving groove. The fixing strip is located outside the receiving groove. A locking groove is formed on the inner wall of the second sliding groove, and the locking groove communicates with the second sliding groove.

[0010] Optionally, two mounting plates and two columns are provided, and each of the two mounting plates has a mounting groove for mounting the column.

[0011] Optionally, a temperature sensor is provided inside the housing to detect the temperature inside the housing, an alarm is provided inside the housing, and a controller is provided inside the housing to connect the temperature sensor and the alarm.

[0012] Compared with the prior art, the beneficial technical effects of this utility model are as follows:

[0013] 1. When it is necessary to replace the components on the crossbar, the first fixing component is no longer fixed in opposition. Then, the crossbar and column are pulled out from the housing. This makes it easier to replace the components on the crossbar, reducing the need for workers to bend over or even crawl into the cabinet to install electrical components. This makes it more convenient to install and remove components.

[0014] 2. When the temperature sensor detects that the temperature has increased, it sends a signal to the controller, which will then issue an alarm. This allows staff to promptly inspect the corresponding enclosure, reducing the risk of fire inside the enclosure and enabling the switchgear to have fire protection functionality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the column located at the opening of the shell in an embodiment of this application.

[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0017] Figure 3 This is a schematic diagram of the structure of the column inside the shell in an embodiment of this application.

[0018] Figure 4 yes Figure 3 Enlarged view of section B in the middle.

[0019] Figure 5 This is a cross-sectional view of the mounting plate according to an embodiment of this application.

[0020] Figure 6 yes Figure 5 A magnified view of point C in the middle.

[0021] Figure 7 This is a schematic diagram of the push rod and push groove structure according to an embodiment of this application.

[0022] Explanation of reference numerals in the attached drawings: 01, housing; 02, cabinet door; 03, mounting plate; 04, upright; 05, crossbar; 06, mounting groove; 07, first sliding groove; 08, second sliding groove; 09, push spring; 1, first fixing component; 11, fixing block; 12, fixing spring; 13, fixing groove; 2, second fixing component; 21, mounting rod; 22, mounting plate; 23, fixing strip; 24, locking spring; 25, locking groove; 3, push component; 31, push rod; 32, push surface; 33, push groove; 41, receiving groove; 5, mounting block. Detailed Implementation

[0023] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the following description is provided in conjunction with the appendix. Figure 1-7 This application will be described in further detail.

[0024] This utility model embodiment provides a low-voltage switchgear with fire protection, see reference. Figures 1 to 7 The fire-resistant low-voltage switchgear includes a housing 01, a cabinet door 02 hinged to the housing 01, a mounting plate 03 fixed inside the housing 01, a column 04 slidably connected to the mounting plate 03, and a crossbar 05 fixed to the column 04. The crossbar 05 is used to install components. Two mounting plates 03 are provided, each with a mounting groove 06. The mounting groove 06 is set along the length direction of the mounting plate 03, and the mounting plate 03 is set along the width direction of the housing 01. The column 04 is slidably connected to the mounting groove 06 on the mounting plate 03. A first fixing component 1 is provided on the column 04, and a second fixing component 2 is provided on the crossbar 05. The first fixing component 1 is used to fix the column 04 to the mounting plate 03, and the second fixing component 2 is used to fix the crossbar 05 to the column 04.

[0025] A first sliding groove 07 for placing crossbars 05 is provided on the side of the mounting plate 03. The first sliding groove 07 is set along the length of the mounting plate 03. At the same time, a second sliding groove 08 is provided on the column 04 for communicating with the first sliding groove 07. The second sliding groove 08 is set along the length of the column 04. The first sliding groove 07 and the second sliding groove 08 are connected, and the crossbars 05 are slidably connected in the first sliding groove 07. In the initial state, all the crossbars 05 in the housing 01 are in the first sliding groove 07. When it is necessary to install components, the column 04 is pulled outward to move the column 04 closer to the position of the cabinet door 02. At the same time, the crossbars 05 are at the upper end of the housing 01. The operator directly installs the components on the crossbars 05 at the top. After the components on the crossbar 05 are installed, slide the crossbar 05 outwards to move it to the connection between the first slide groove 07 and the second slide groove 08. Finally, move it vertically into the second slide groove 08. When it reaches the lowest position, fix the crossbar 05 to the column 04 through the second fixing component 2. Then, slide multiple crossbars 05 in sequence so that they are spaced apart along the length of the column 04. After all the components on the multiple crossbars 05 are installed, push the column 04 inwards. Then, the column 04 moves the crossbars 05 and the components on the crossbars 05 into the interior. Fix the column 04 to the mounting plate 03 through the first fixing component 1, thereby facilitating the installation of components.

[0026] When it is necessary to replace the components on the crossbar 05, the first fixing component 1 is no longer fixed to the column 04, and then the crossbar 05 and the column 04 are pulled out from the housing 01. At this time, it is convenient to replace the components on the crossbar 05, reducing the need for workers to bend over or even crawl into the cabinet to install electrical components, and making it more convenient to install and disassemble components.

[0027] The first fixing component 1 includes a fixing block 11 slidably connected to the column 04 and a fixing spring 12 fixed to the fixing block 11. The end of the fixing spring 12 away from the fixing block 11 is fixed to the column 04, and the fixing spring 12 is used to push the fixing block 11 to move upward. A fixing groove 13 is provided on the inner wall of the mounting groove 06, and the fixing groove 13 is connected to the mounting groove 06. When the column 04 slides into the housing 01 and the fixing block 11 on the column 04 corresponds to the fixing groove 13, the fixing spring 12 pushes the fixing block 11 to move into the fixing groove 13, thereby fixing the position of the column 04. In this embodiment, two columns 04 are provided, and two first fixing components 1 are provided on each of the two columns 04. The two first fixing components 1 are located at both ends of the column 04, which can improve the fixing strength of the column 04.

[0028] A pushing component 3 is provided on the mounting plate 03. The pushing component 3 is used to push the fixing block 11 away from the fixing groove 13, so that the column 04 can be pulled outward. In order to facilitate the movement of the column 04 to the outside of the housing 01, a pushing spring 09 is provided in the mounting groove 06. One end of the pushing spring 09 is fixed to the inner wall of the mounting groove 06, and the other end is fixed to the column 04. When the fixing block 11 and the fixing groove 13 are separated, the column 04 is pushed outward by the action of the pushing spring 09, so that the crossbar 05 on the column 04 can move to the opening of the housing 01, thereby facilitating the installation of components on the crossbar 05.

[0029] The pushing assembly 3 includes a pushing rod 31 slidably connected to the mounting plate 03 and a pushing surface 32 disposed on the pushing rod 31. The pushing surface 32 gradually tilts upward in the direction away from the cabinet door 02. At the same time, a pushing groove 33 is provided on the fixing block 11. The pushing rod 31 passes through the pushing groove 33 and slides within the pushing groove 33. The pushing surface 32 abuts against the inner wall of the pushing groove 33. When the pushing rod 31 moves into the housing 01, the pushing surface 32 on the pushing rod 31 gradually moves. Then, under the action of the pushing groove 33, the fixing block 11 is pushed away from the fixing groove 13. Then, the pushing spring 09 pushes the column 04 outward. After the components of the crossbar 05 and the crossbar 05 rope are installed, the pushing rod 31 is reset. Then, the column 04 is pushed inward. The pushing spring 09 is gradually compressed. Finally, when the fixing block 11 and the fixing groove 13 correspond, the fixing spring 12 pushes the fixing block 11 into the fixing groove 13, thereby fixing the column 04.

[0030] Mounting blocks 5 are fixedly installed at both ends of the crossbar 05. The mounting blocks 5 are provided with receiving grooves 41. The second fixing component 2 is set in the receiving grooves 41. The second fixing component 2 includes a mounting rod 21 slidably connected to the mounting blocks 5, a mounting plate 22 fixed to the mounting rod 21, a fixing strip 23 fixed to the mounting rod 21, and a locking spring 24 sleeved on the mounting rod 21. One end of the locking spring 24 is fixed to the mounting plate 22, and the other end is fixed to the inner wall of the receiving groove 41. The fixing strip 23 is located outside the receiving groove 41. A locking groove 25 is opened on the inner wall of the second slide groove 08. The locking groove 25 is connected to the second slide groove 08. Multiple locking grooves 25 are provided. Multiple locking grooves 25 are spaced apart along the length direction of the column 04. The locking spring 24 is used to pull the fixing strip 23 to move to the locking groove 25, and then fix the position of the crossbar 05. Since the second fixing component 2 is provided at both ends of the crossbar 05, the fixing strength of the crossbar 05 can be improved.

[0031] A temperature sensor is installed inside the housing 01 to detect the temperature inside the housing 01. An alarm and a controller are also installed inside the housing 01. The controller is used to connect the temperature sensor and the alarm. When the temperature sensor detects that the temperature has increased, the controller sends a signal to the alarm, which will then sound an alarm. This allows the staff to promptly inspect the housing 01 and reduce the possibility of fire inside the housing 01, thus enabling the switchgear to have fire protection functions.

[0032] The implementation principle of a fire-resistant low-voltage switchgear according to an embodiment of this application is as follows: In the initial state, the fixing block 11 is disengaged from the fixing groove 13, and then the spring 09 pushes the column 04 to the opening of the outer shell. At this time, the crossbars 05 inside the shell 01 are all in the first sliding groove 07, and the locking spring 24 is in a compressed state. Then, components are installed on the outermost crossbar 05. After the components are installed on the outermost crossbar 05, the crossbar 05 is pushed outward, and then the mounting block 5 on the crossbar 05 moves from the first sliding groove 07 to the second sliding groove 08, so that the mounting block 5 slides in the second sliding groove 08, and the crossbar 05 with the components moves to the bottom. Align the fixing strip 23 with the locking groove 25. Under the action of the locking spring 24, push the fixing strip 23 into the locking groove 25 to fix the position of the crossbar 05. Finally, move the upper crossbar 05 into the second slide groove 08 in sequence. After all the crossbars 05 are fixed to the column 04, push the column 04 inward. The column 04 drives the crossbars 05 to move. Then push the spring 09 to be gradually compressed. When the fixing block 11 and the fixing groove 13 are aligned, the fixing spring 12 pushes the fixing block 11 into the fixing groove 13, thereby fixing the position of the column 04. This facilitates the installation of components and reduces the workload of the staff.

[0033] Similarly, the components included in the "components," "mechanisms," and "devices" of this disclosure can also be flexibly combined. They can be modularly produced according to actual needs and assembled as an independent module; or they can be assembled separately to form a module in this device. The division of the above-mentioned components in this disclosure is only one embodiment for ease of reading and is not intended to limit the scope of protection of this disclosure. Any technical solution that includes the above-mentioned components and has the same function should be understood as an equivalent technical solution of this disclosure.

[0034] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0035] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0037] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0038] It should be noted that when a component is referred to as "fixed to," "set on," "fixed to," or "mounted on" another component, it can be directly on the other component or there may be an intervening component. When a component is considered to be "connected to another component," it can be directly connected to the other component or there may be an intervening component. Furthermore, when a component is considered to be "fixedly connected" to another component, the connection can be detachable or non-detachable, such as through socketing, snap-fitting, integral molding, welding, etc., which are achievable in conventional technologies and will not be elaborated upon here.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The above embodiments are merely illustrative of several implementation methods of this disclosure, and their descriptions are relatively specific and detailed. However, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this disclosure, and these modifications and improvements all fall within the protection scope of this disclosure.

Claims

1. A low-voltage switchgear with fire protection, comprising a housing (01) and a cabinet door (02) hinged to the housing (01), characterized in that: The housing (01) is fixedly provided with a mounting plate (03), a column (04) slidably connected to the mounting plate (03), and a crossbar (05) for fixing to the column (04). The mounting plate (03) is provided with mounting grooves (06) along its length. The column (04) is slidably connected to the mounting grooves (06) on the mounting plate (03). A first fixing component (1) is provided on the column (04), and a second fixing component (2) is provided on the crossbar (05). The first fixing component (1) is used to fix the column (04) to the mounting plate (03). On the mounting plate (03), the second fixing component (2) is used to fix the crossbar (05) on the column (04). The mounting plate (03) has a first sliding groove (07) for placing the crossbar (05) on its side. The first sliding groove (07) is arranged along the length direction of the mounting plate (03). The column (04) has a second sliding groove (08) for communicating with the first sliding groove (07). The second sliding groove (08) is arranged along the length direction of the column (04). The first sliding groove (07) and the second sliding groove (08) are connected, and the crossbar (05) is slidably connected in the first sliding groove (07).

2. The low-voltage switchgear with fire protection according to claim 1, characterized in that: The first fixing component (1) includes a fixing block (11) slidably connected to the column (04) and a fixing spring (12) fixed to the fixing block (11). The end of the fixing spring (12) away from the fixing block (11) is fixed to the column (04), and the fixing spring (12) is used to push the fixing block (11) to move upward. A fixing groove (13) is provided on the inner wall of the mounting groove (06). The fixing groove (13) and the mounting groove (06) are connected. When the column (04) slides into the housing (01) and the fixing block (11) on the column (04) corresponds to the fixing groove (13), the fixing spring (12) pushes the fixing block (11) to move into the fixing groove (13) to fix the position of the column (04).

3. The low-voltage switchgear with fire protection according to claim 2, characterized in that: The mounting plate (03) is provided with a pushing component (3), which is used to push the fixing block (11) away from the fixing groove (13). The mounting groove (06) is provided with a pushing spring (09), one end of which is fixed on the inner wall of the mounting groove (06) and the other end is fixed on the column (04).

4. The low-voltage switchgear with fire protection according to claim 3, characterized in that: The pushing assembly (3) includes a pushing rod (31) slidably connected to the mounting plate (03) and a pushing surface (32) provided on the pushing rod (31). The pushing surface (32) gradually tilts upward in a direction away from the cabinet door (02). A pushing groove (33) is provided on the fixing block (11). The pushing rod (31) passes through the pushing groove (33) and slides in the pushing groove (33). The pushing surface (32) abuts against the inner wall of the pushing groove (33).

5. The low-voltage switchgear with fire protection according to claim 1, characterized in that: The two ends of the crossbar (05) are fixedly installed with mounting blocks (5), and the mounting blocks (5) are provided with receiving grooves (41), and the second fixing component (2) is disposed in the receiving grooves (41).

6. The low-voltage switchgear with fire protection according to claim 5, characterized in that: The second fixing component (2) includes a mounting rod (21) slidably connected to the mounting block (5), a mounting plate (22) fixed to the mounting rod (21), a fixing strip (23) fixed to the mounting rod (21), and a locking spring (24) sleeved on the mounting rod (21). One end of the locking spring (24) is fixed to the mounting plate (22), and the other end is fixed to the inner wall of the receiving groove (41). The fixing strip (23) is located outside the receiving groove (41). A locking groove (25) is provided on the inner wall of the second slide groove (08), and the locking groove (25) and the second slide groove (08) are connected.

7. The low-voltage switchgear with fire protection according to claim 1, characterized in that: Two mounting plates (03) and two columns (04) are provided, and each of the two mounting plates (03) has a mounting groove (06) for mounting the column (04).

8. The low-voltage switchgear with fire protection according to claim 1, characterized in that: A temperature sensor is installed inside the housing (01) to detect the temperature inside the housing (01). An alarm is installed inside the housing (01). A controller is installed inside the housing (01) to connect the temperature sensor and the alarm.

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