A low-voltage switchgear

Abstract

This utility model discloses a low-voltage switchgear, including a cabinet column and a floor support bracket. The cabinet column has several fixing holes, and the floor support bracket includes a base, a U-shaped clamp, fastening bolts, and several floor sockets. The base has slots at both ends and a T-shaped groove on its surface. One side plate of the U-shaped clamp is inserted into the slot and fixed with the fastening bolt, while the connecting post of the other side plate is inserted into the fixing hole of the cabinet column to fix the base. The T-shaped connecting block of the floor socket slides in conjunction with the T-shaped groove, and the connecting groove of the connecting plate allows the floor to pass through. This low-voltage switchgear, through the structural design of the floor support bracket, improves the flexibility and adaptability of floor installation, enhances compatibility with different specifications of floor rails, facilitates assembly and disassembly, and also contributes to the modular design and standardized production of low-voltage switchgear.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage switchgear technology, specifically a low-voltage switchgear. Background Technology

[0002] In low-voltage power distribution systems, the low-voltage switchgear is the core equipment for power distribution and control. The connection stability and layout rationality of its internal electrical components directly affect the safe operation and maintenance efficiency of the system. The grounding busbar, as a key component for achieving grounding protection within the low-voltage switchgear, must be fixed to the cabinet column using a dedicated bracket to ensure reliable conduction of the grounding circuit.

[0003] Currently, most floor-mounted rack supports used in the industry are fixed structures, with their connection positions to the cabinet uprights and their installation paths relatively fixed. Specifically, traditional floor-mounted rack supports are typically rigidly connected to the cabinet uprights via welding or a single bolt hole. Once installed, it is difficult to flexibly adjust the fixed position of the floor-mounted rack according to actual working conditions (such as changes in rack specifications, adjustments to the layout of other components inside the cabinet, etc.). This fixed method has the following significant drawbacks:

[0004] On the one hand, when low-voltage switchgear needs to be adapted to ground bars of different cross-sectional sizes, the connection slots of traditional brackets are fixed, often requiring the replacement of the entire bracket assembly. This not only increases spare parts inventory costs but also extends the time required for on-site installation or modification. On the other hand, the arrangement of electrical components inside the cabinet often varies depending on project requirements. If the installation position of the ground bar bracket interferes with the space of other components, the fixed structure makes it difficult to avoid conflicts by fine-tuning the ground bar path, which may lead to compromises in component layout and affect the utilization rate of the space inside the cabinet.

[0005] Therefore, there is an urgent need for a technology that can adjust the position of the ground support and quickly assemble and disassemble the ground support without tools. Utility Model Content

[0006] In view of the shortcomings of the prior art, this utility model provides a low-voltage switchgear.

[0007] The technical solution adopted by this utility model is: a low-voltage cabinet, including a cabinet column and a ground support fixed to the bottom of the cabinet column. The cabinet column is provided with a number of fixing holes at intervals. The ground support includes a base, a "U"-shaped clamp, fastening bolts and a number of ground sockets.

[0008] The base has slots at both ends, and a "T"-shaped groove is provided on the surface of the base along its length.

[0009] One side plate of the "U" shaped clamp is inserted into the corresponding slot and then fixedly connected to the base by fastening bolts. The other side plate is provided with a connecting post, which is inserted into the fixing hole of the cabinet column to fix the base to the cabinet column.

[0010] The floor outlet socket includes a "T"-shaped connecting block that slides with a "T"-shaped groove and a connecting plate integral with the "T"-shaped connecting block. The connecting plate is provided with a connecting groove for the floor outlet to pass through.

[0011] Furthermore, a pre-tightening screw hole is provided on the side wall of the outer side of the connecting groove for screwing in a pre-tightening screw to tighten the grounding.

[0012] Furthermore, one end of the "T"-shaped groove is provided with an installation port, and an interference fit cover plate is provided inside the installation port.

[0013] Furthermore, an elastic bushing is fitted around the outer periphery of the connecting post. When the connecting post is inserted into the fixing hole, the elastic bushing is compressed to form an anti-loosening connection.

[0014] Furthermore, the surfaces of the base, connecting plate, and "U"-shaped clamp are all provided with an anti-corrosion coating, and the conductive areas of the anti-corrosion coating are partially exposed to maintain grounding continuity.

[0015] Furthermore, the inner wall of the connecting groove is covered with a conductive elastic gasket. When the ground runs through the connecting groove, the conductive elastic gasket is compressed to simultaneously achieve electrical connection and vibration reduction.

[0016] Furthermore, the conductive elastic pad is made of a tin-plated phosphor bronze-conductive silicone rubber composite sheet with a thickness of 0.8 mm to 1.2 mm, wherein the thickness of the tin-plated phosphor bronze layer is 0.2 mm to 0.4 mm, the thickness of the conductive silicone rubber layer is 0.6 mm to 0.8 mm, and the compression amount of the conductive elastic pad when subjected to grounding pressure is 20% to 50% of the original thickness.

[0017] The beneficial effects of this utility model are:

[0018] 1. Enhanced Installation Flexibility and Adaptability: The base of the floor outlet bracket connects to the cabinet column via a "U"-shaped clamp. The connecting column can be inserted into fixing holes at different positions on the cabinet column, enabling multi-position adjustment of the base on the column. Simultaneously, the floor outlet socket slides along the length of the base via a "T"-shaped connecting block and a "T"-shaped groove. This dual-adjustment structure allows the floor outlet to be freely positioned according to actual working conditions (such as the layout of components inside the cabinet and the required routing of the floor outlet), effectively solving the problem of traditional fixed brackets being difficult to adapt to complex scenarios and significantly improving the flexibility of the internal layout of the low-voltage cabinet.

[0019] 2. Enhanced compatibility with different floor drain specifications: The connection plate of the floor drain socket has a connection groove for the floor drain to pass through, which can adapt to the installation requirements of floor drains with different cross-sectional dimensions. There is no need to replace the entire bracket assembly due to changes in floor drain specifications, reducing the types of spare parts and inventory costs, while shortening the working time during on-site installation or modification and improving construction efficiency.

[0020] 3. Easy to assemble and disassemble: The base of the floor bracket is connected to the cabinet column via a "U" shaped clamp, and the connecting column is inserted into the fixing holes at different positions on the cabinet column. During assembly and disassembly, simply pry out one side panel of the "U" shaped clamp to detach the connecting column from the fixing holes on the column, making disassembly and assembly convenient.

[0021] 4. Facilitating Modular Design and Standardized Production of Low-Voltage Switchgear: The universal structure of this bracket can adapt to various cabinet specifications and floor bar types, which is conducive to promoting the modular design of low-voltage switchgear. In the production process, the unified bracket structure reduces the number of customized parts, facilitates standardized mass production, and reduces manufacturing costs; during on-site assembly, the flexible adjustment capability also facilitates the rapid combination of different modules, further improving the overall application efficiency of low-voltage switchgear.

[0022] In addition to the objectives, features, and advantages described above, this utility model has other objectives, features, and advantages. The utility model will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of this utility model.

[0024] Figure 2 This is a schematic diagram of the ground support structure.

[0025] Figure 3 This is a schematic diagram of a floor outlet socket.

[0026] Figure 4 This is a partial schematic diagram of the present invention.

[0027] Figure 5 This is a schematic diagram of the "U" shaped clamp.

[0028] Figure 1-5 In the middle: 1. Cabinet upright; 2. Floor support bracket; 3. Fixing hole; 4. Base; 5. "U" clip; 6. Fastening bolt; 7. Floor socket; 8. Slot; 9. "T" shaped slide; 10. Connecting column; 11. "T" shaped connecting block; 12. Connecting plate; 13. Connecting groove; 14. Pre-tightening screw hole; 15. Mounting port; 16. Cover plate; 17. Elastic bushing; 18. Electroelastic gasket. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] This utility model provides a low-voltage switchgear.

[0032] In this embodiment, refer to Figure 1-5 The low-voltage switchgear includes a cabinet column 1 and a ground support 2 fixed to the bottom of the cabinet column 1. The cabinet column is provided with a number of fixing holes 3 at intervals. The ground support includes a base 4, a "U" shaped clamp 5, fastening bolts 6 and a number of ground sockets 7.

[0033] The base has slots 8 at both ends, and a "T"-shaped groove 9 is provided on the surface of the base along its length.

[0034] One side plate of the "U" shaped clamp is inserted into the corresponding slot and then fixedly connected to the base by fastening bolts. The other side plate is provided with a connecting post 10, which is inserted into the fixing hole of the cabinet column to fix the base to the cabinet column.

[0035] The ground outlet includes a T-shaped connecting block 11 that slides with a T-shaped groove 9 and a connecting plate 12 integral with the T-shaped connecting block 11. The connecting plate 12 is provided with a connecting groove 13 for the ground outlet to pass through.

[0036] In the aforementioned technical specification, the low-voltage switchgear's floor panel support consists of a base, "U"-shaped clamps, fastening bolts, and several floor panel sockets. Slots at both ends of the base allow insertion of one side plate of the "U"-shaped clamp, which is then secured with the fastening bolts. The connecting post of the other side plate of the "U"-shaped clamp inserts into the fixing hole of the cabinet column, thus fixing the base to the cabinet column. The "T"-shaped connecting block of the floor panel socket slides into the "T"-shaped groove of the base, allowing the floor panel socket to move along the length of the base. The connecting groove of the connecting plate allows the floor panel to pass through. The cooperation between the "U"-shaped clamp and the fixing hole of the cabinet column allows for flexible adjustment of the base's position on the cabinet column. The floor panel socket can slide along the "T"-shaped groove, allowing for selection of different floor panel socket positions, significantly improving the flexibility of floor panel installation and adapting to different working conditions. This solves the problems of traditional floor panel supports having a single fixing position and poor adaptability.

[0037] Specifically, a pre-tightening screw hole 14 is provided on the side wall outside the connecting groove for screwing in a pre-tightening screw 14 to press the grounding.

[0038] In this embodiment, a pre-tightening screw hole is provided on the side wall outside the connecting groove. When the pre-tightening screw is screwed into the screw hole, its end will abut against the ground busbar passing through the connecting groove, and the axial force of the screw will press the ground busbar into the connecting groove. This effectively prevents the ground busbar from loosening or shifting in the connecting groove, ensures the stability of the connection between the ground busbar and the ground busbar socket, avoids poor contact of the ground busbar due to vibration or other reasons, and ensures reliable conduction of the grounding circuit.

[0039] Specifically, one end of the "T"-shaped groove is provided with an installation port 15, and an interference fit cover plate 16 is provided inside the installation port 15.

[0040] In this embodiment, one end of the "T"-shaped groove is provided with an installation port for installing the "T"-shaped connecting block of the floor socket. After installation, the cover plate is interference-fitted into the installation port to close the installation port.

[0041] This design prevents the floor outlet from slipping out of the mounting opening while sliding within the "T"-shaped groove, ensuring the stability of the floor outlet's position. It also allows for easy addition or removal of floor outlets.

[0042] Specifically, an elastic bushing 17 is fitted around the outer periphery of the connecting post. When the connecting post is inserted into the fixing hole, the elastic bushing is compressed to form an anti-loosening connection.

[0043] In this embodiment, the elastic bushing fitted around the outer periphery of the connecting post is elastic. When the connecting post is inserted into the fixing hole, the elastic bushing is squeezed and compressed, generating radial elastic force, which makes the connecting post fit tightly against the inner wall of the fixing hole, forming friction.

[0044] Specifically, the surfaces of the base, connecting plate, and "U"-shaped clamp are all provided with anti-corrosion coating, and the conductive areas of the anti-corrosion coating are partially exposed to maintain grounding continuity.

[0045] In this embodiment, an anti-corrosion coating is provided on the surface of the base, connecting plate and "U" clamp to prevent these components from being corroded; at the same time, the conductive area of ​​the anti-corrosion coating is partially exposed to ensure that the current can flow smoothly between these components and maintain the continuity of grounding.

[0046] Specifically, the inner wall of the connecting groove is covered with a conductive elastic pad 18. When the ground passes through the connecting groove, the conductive elastic pad is compressed to achieve both electrical connection and vibration reduction.

[0047] In this embodiment, the conductive elastic gasket covering the inner wall of the connecting groove is conductive and elastic. When the ground busbar passes through the connecting groove, the ground busbar will squeeze the conductive elastic gasket, causing it to deform and fit tightly against the surface of the ground busbar. The conductivity ensures a good electrical connection between the ground busbar and the connecting plate, ensuring the continuity of the grounding circuit; the elastic force generated by the elastic deformation makes the gasket in close contact with the ground busbar, and at the same time can absorb the vibration generated during the operation of the low-voltage switchgear, reducing the wear and loosening of the ground busbar caused by vibration, thus playing a vibration damping role.

[0048] Specifically, the conductive elastic pad is made of a tin-phosphor bronze-conductive silicone rubber composite sheet with a thickness of 0.8 mm to 1.2 mm, wherein the thickness of the tin-phosphor bronze layer is 0.2 mm to 0.4 mm, the thickness of the conductive silicone rubber layer is 0.6 mm to 0.8 mm, and the compression amount of the conductive elastic pad when subjected to grounding pressure is 20% to 50% of the original thickness.

[0049] In this embodiment, the conductive elastic gasket is made of a tin-phosphor bronze-conductive silicone rubber composite sheet of a specific thickness. The tin-phosphor bronze layer ensures good conductivity and a certain structural strength, while the conductive silicone rubber layer provides elasticity. Moreover, its compression is controlled at 20% to 50% of the original thickness, which can ensure close contact with the grounding bar without damaging the gasket due to excessive compression.

[0050] Attention all technical personnel: Although this utility model has been described according to the specific embodiments above, the concept of this utility model is not limited to this utility model. Any modification that utilizes the concept of this utility model will be included within the scope of protection of this patent right.

Claims

1. A low-voltage switchgear, comprising a cabinet column and a ground support fixed to the bottom of the cabinet column, wherein the cabinet column is provided with a plurality of fixing holes at intervals, characterized in that: The ground support bracket includes a base, a "U" shaped clamp, fastening bolts, and several ground sockets; The base has slots at both ends, and a "T" shaped groove is provided on the surface of the base along its length. One side plate of the "U" shaped clamp is inserted into the corresponding slot and then fixedly connected to the base by fastening bolts. The other side plate is provided with a connecting post, which is inserted into the fixing hole of the cabinet column to fix the base to the cabinet column. The floor outlet socket includes a "T"-shaped connecting block that slides with a "T"-shaped groove and a connecting plate integral with the "T"-shaped connecting block. The connecting plate is provided with a connecting groove for the floor outlet to pass through.

2. The low-voltage switchgear according to claim 1, characterized in that: A pre-tightening screw hole is provided on the side wall outside the connecting groove for screwing in a pre-tightening screw to tighten the grounding.

3. The low-voltage switchgear according to claim 1, characterized in that: One end of the "T"-shaped groove is provided with an installation port, and an interference fit cover plate is provided inside the installation port.

4. The low-voltage switchgear according to claim 1, characterized in that: An elastic bushing is fitted around the outer periphery of the connecting post. When the connecting post is inserted into the fixing hole, the elastic bushing is compressed to form an anti-loosening connection.

5. The low-voltage switchgear according to claim 1, characterized in that: The base, connecting plate, and "U"-shaped clamp are all coated with an anti-corrosion coating, and the conductive areas of the anti-corrosion coating are partially exposed to maintain grounding continuity.

6. The low-voltage switchgear according to claim 1, characterized in that: The inner wall of the connecting groove is covered with a conductive elastic gasket. When the ground drain passes through the connecting groove, the conductive elastic gasket is compressed to achieve both electrical connection and vibration reduction.

7. The low-voltage switchgear according to claim 6, characterized in that: The conductive elastic pad is made of a tin-phosphor bronze-conductive silicone rubber composite sheet with a thickness of 0.8 mm to 1.2 mm, wherein the thickness of the tin-phosphor bronze layer is 0.2 mm to 0.4 mm, the thickness of the conductive silicone rubber layer is 0.6 mm to 0.8 mm, and the compression of the conductive elastic pad when subjected to grounding pressure is 20% to 50% of its original thickness.

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