Grounding device of low-voltage power distribution cabinet
By using a rotating motor to drive the grounding pin, combined with a threaded structure and locking clamp, the problem of unstable fixing of traditional low-voltage distribution cabinet grounding devices under complex geological conditions is solved, achieving efficient and stable grounding effect, and improving safety and installation efficiency.
Patent Information
- Application Number
- CN202423076471.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-14
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Traditional low-voltage distribution cabinet grounding devices are not effective in fixing under complex geological conditions, are cumbersome and time-consuming to install, and are difficult to adjust the grounding depth precisely, which affects the grounding effect and safety.
A rotary motor drives the grounding nail, which, combined with a threaded structure and locking device, rotates and inserts into the ground. The spiral blades cut into the soil, and the threaded components ensure vertical insertion. The grounding nail is then fixed in place by a locking clamping structure, achieving precise depth control and stability.
It enables efficient and stable installation of grounding nails under different geological conditions, simplifies grounding fixing, ensures efficient and stable insertion and fixing of grounding nails, reduces manual operation, and improves safety and stability.
Smart Images
Figure CN223552867U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of power distribution cabinet grounding technology, specifically a grounding device for low-voltage power distribution cabinets. Background Technology
[0002] With the development of modern power systems, low-voltage distribution cabinets are widely used in power distribution and management. In order to ensure the safety of power distribution equipment and the surrounding environment, grounding devices play a crucial role in distribution cabinets. The core function of grounding devices is to safely introduce leakage current or overcurrent of equipment into the ground through grounding pins, preventing electric shock accidents and equipment damage caused by current leakage. The inner wall of the distribution cabinet is generally equipped with grounding bars for connecting electrical devices inside the cabinet. The grounding bars ground all electrical devices through grounding wires, and the terminals tightly connect the wires inside the distribution cabinet through metal conductive parts to achieve stable current transmission.
[0003] Traditional grounding devices often use manual hammering or bolting to insert grounding nails into the ground. This method has limited effectiveness; grounding nails may lose stability due to long-term vibration, soil loosening, or climate change, affecting the grounding effect. Manual installation requires a significant amount of labor, especially in complex geological conditions (such as hard ground or slippery soil), making the installation and adjustment process cumbersome and time-consuming. Furthermore, traditional grounding devices struggle to precisely adjust the depth of the grounding nails, failing to guarantee ideal grounding resistance. Therefore, we propose a grounding device for low-voltage distribution cabinets. Utility Model Content
[0004] To address the problems mentioned in the background art, this utility model provides the following technical solution: a low-voltage distribution cabinet grounding device, comprising a distribution cabinet body, the distribution cabinet body having legs, a fixing plate disposed inside the distribution cabinet body, a guide hole disposed on the fixing plate, a grounding nail passing through the guide hole, a through hole being opened at the bottom of the distribution cabinet body, the through hole corresponding to the position of the grounding nail, a terminal being disposed on the grounding nail, the grounding nail being rotatably connected to the terminal, the terminal being connected to an internal wire of the distribution cabinet body, a rotary motor disposed on the grounding nail, the output end of the rotary motor passing through the terminal and connected to the grounding nail, a slide rail disposed on the inner wall of the distribution cabinet body, a slider slidably disposed on the slide rail, the slider being connected to the rotary motor, and a locking device disposed at the bottom of the distribution cabinet body via a connector.
[0005] Preferably, the locking device has two sets, which are respectively arranged on both sides of the grounding nail. The locking device includes a telescopic rod, and the telescopic end of the telescopic rod is provided with a locking clamp. The locking clamp is provided with an arc-shaped clamping mouth. The two sets of arc-shaped clamping mouths correspond to each other to provide strong clamping of the grounding nail. This symmetrical arrangement can disperse the clamping force, improve the fixing stability of the grounding nail, and prevent it from tilting or loosening during use.
[0006] Preferably, the guide hole is provided with an internal thread, and the grounding nail is provided with an external thread and a smooth part. The external thread matches the internal thread, and the smooth part is rotatably fitted with a terminal block. By designing a threaded structure between the guide hole and the grounding nail, the device can achieve more precise depth control and provide additional support and stability during rotation. The smooth part allows the terminal block to maintain flexibility, and the terminal block can still be kept in the ideal position when the grounding nail is rotated and inserted into the ground, avoiding wire entanglement or stress.
[0007] Preferably, the arc-shaped clamp is provided with an anti-slip pad, which is made of rubber material. This can greatly increase the clamping force and friction, prevent the grounding nail from sliding, and the rubber material also has a certain buffering effect, absorbing vibration and impact, further improving the stability and safety of the device.
[0008] Preferably, the lower end of the grounding nail has a conical tip with helical blades. The conical tip design can reduce the resistance when inserting into the ground, and the helical blade structure further enhances the penetration ability of the grounding nail under hard or complex geological conditions, which helps to insert the grounding nail into the ground more smoothly, while improving the adaptability of the grounding device under different geological conditions.
[0009] Compared with the prior art, the beneficial effects of this utility model are:
[0010] During operation, the operator starts the rotary motor, and the output end begins to rotate, driving the grounding nail to rotate. Because the lower end of the grounding nail has helical blades, the blades can cut into the soil during rotation, gradually pushing the grounding nail into the ground. The threaded part of the guide hole matches the threaded groove to ensure that the grounding nail is inserted vertically and to provide additional protection. During the insertion process, the rotary motor runs smoothly on the slide rail via the slider. When the grounding nail is inserted to the preset depth, the operator activates the locking device, the telescopic rod extends, and pushes the locking clamp to clamp the grounding nail. The rubber anti-slip pad inside the arc-shaped clamp increases the friction to ensure that the grounding nail is stable and does not move, preventing loosening or displacement caused by external forces. The wiring terminal is connected to the wires in the distribution cabinet to safely introduce leakage current or fault current into the ground, realizing grounding protection, reducing manual operation, ensuring a smooth and efficient insertion process, preventing loosening or displacement, and improving safety. Attached Figure Description
[0011] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] In the diagram: 1. Distribution cabinet body; 2. Support leg; 3. Fixing plate; 4. Grounding nail; 5. Wiring terminal; 6. Rotary motor; 7. Slide rail; 8. Slider; 9. Connector; 10. Telescopic rod; 11. Locking clamp; 12. Helical blade. Detailed Implementation
[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0015] Depend on Figure 1 The present invention includes a power distribution cabinet body 1, which has legs 2. A fixing plate 3 is provided inside the power distribution cabinet body 1. A guide hole is provided on the fixing plate 3, and a grounding nail 4 passes through the guide hole. A through hole is provided at the bottom of the power distribution cabinet body 1, which corresponds to the position of the grounding nail 4. A terminal block 5 is provided on the grounding nail 4, and the grounding nail 4 and the terminal block 5 are rotatably connected. The terminal block 5 is connected to the internal wires of the power distribution cabinet body 1. A rotary motor 6 is provided on the grounding nail 4, and the output end of the rotary motor 6 passes through the terminal block 5 and is connected to the grounding nail 4. A slide rail 7 is provided on the inner wall of the power distribution cabinet body 1, and a slider 8 is slidably provided on the slide rail 7. The slider 8 is connected to the rotary motor 6. A locking device is provided at the bottom of the power distribution cabinet body 1 through a connector 9.
[0016] The locking device has two sets, which are respectively set on both sides of the grounding nail 4. The locking device includes a telescopic rod 10, and a locking clip 11 is provided at the telescopic end of the telescopic rod 10. The locking clip 11 is provided with an arc-shaped clamp. The two sets of arc-shaped clamps correspond to each other and provide strong clamping for the grounding nail 4. This symmetrical arrangement can disperse the clamping force, improve the fixing stability of the grounding nail 4, and prevent it from tilting or loosening during use.
[0017] The guide hole is provided with an internal thread, and the grounding nail 4 is provided with an external thread and a smooth part. The external thread matches the internal thread, and the smooth part is rotatably fitted with a terminal 5. By designing a threaded structure between the guide hole and the grounding nail 4, the device can achieve more precise depth control and can provide additional support and stability during rotation. The smooth part allows the terminal 5 to maintain flexibility. When the grounding nail 4 is rotated and inserted into the ground, the terminal 5 can still be kept in the ideal position to avoid wire entanglement or stress.
[0018] The arc-shaped clamp is equipped with an anti-slip pad made of rubber, which can greatly increase the clamping force and friction, prevent the grounding nail 4 from sliding, and the rubber material also has a certain buffering effect, absorbing vibration and impact, further improving the stability and safety of the device.
[0019] The grounding nail 4 has a tapered tip at the lower end, and a spiral blade 12 is provided on the tapered tip. The tapered tip design can reduce the resistance when inserting into the ground, and the spiral blade 12 structure further enhances the penetration ability of the grounding nail 4 under hard or complex geological conditions, which helps to insert the grounding nail 4 into the ground more smoothly, while improving the adaptability of the grounding device under different geological conditions.
[0020] Working principle: During operation, the operator starts the rotary motor 6, and the output end begins to rotate, driving the grounding nail 4 to rotate. Since the lower end of the grounding nail 4 has a helical blade 12, the blade can cut into the soil during rotation, gradually pushing the grounding nail 4 into the ground. The threaded part of the guide hole cooperates with the threaded groove to ensure that the grounding nail 4 is inserted in a vertical direction and to provide additional protection. During the insertion of the grounding nail 4, the rotary motor 6 runs smoothly on the slide rail 7 through the slider 8. When the grounding nail 4 is inserted to the preset depth, the operator activates the locking device, the telescopic rod 10 extends, and pushes the locking clamp 11 to clamp the grounding nail 4. The rubber anti-slip pad in the arc-shaped clamp increases the friction and ensures that the grounding nail 4 is stable and does not move, preventing loosening or displacement caused by external forces. The wiring terminal 5 is connected to the wire in the distribution cabinet to safely introduce leakage current or fault current into the ground, realize grounding protection, reduce manual operation, ensure a smooth and efficient insertion process, prevent loosening or displacement, and improve safety.
[0021] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A grounding device for a low-voltage distribution cabinet, comprising the distribution cabinet body (1), characterized in that: The power distribution cabinet body (1) has legs (2), a fixing plate (3) is provided inside the power distribution cabinet body (1), a guide hole is provided on the fixing plate (3), a grounding nail (4) is passed through the guide hole, a through hole is provided at the bottom of the power distribution cabinet body (1), the through hole corresponds to the position of the grounding nail (4), a terminal block (5) is provided on the grounding nail (4), the grounding nail (4) and the terminal block (5) are rotatably connected, the terminal block (5) is connected to the internal wire of the power distribution cabinet body (1), a rotary motor (6) is provided on the grounding nail (4), the output end of the rotary motor (6) passes through the terminal block (5) and is connected to the grounding nail (4), a slide rail (7) is provided on the inner wall of the power distribution cabinet body (1), a slider (8) is slidably provided on the slide rail (7), the slider (8) is connected to the rotary motor (6), and a locking device is provided at the bottom of the power distribution cabinet body (1) through a connector (9).
2. The grounding device for low-voltage distribution cabinets according to claim 1, characterized in that: The locking device has two sets, and the two sets of locking devices are respectively set on both sides of the grounding nail (4). The locking device includes a telescopic rod (10), and the telescopic end of the telescopic rod (10) is provided with a locking clip (11). The locking clip (11) is provided with an arc-shaped clamp, and the two sets of arc-shaped clamps correspond to each other.
3. The low-voltage distribution cabinet grounding device according to claim 2, characterized in that: The guide hole is provided with an internal thread, and the grounding nail (4) is provided with an external thread and a smooth part. The external thread matches the internal thread, and the smooth part is rotatably fitted with a terminal (5).
4. The low-voltage distribution cabinet grounding device according to claim 3, characterized in that: An anti-slip pad is provided inside the arc-shaped clamp, and the anti-slip pad is made of rubber.
5. The grounding device for low-voltage distribution cabinets according to claim 4, characterized in that: The grounding nail (4) has a tapered tip at its lower end, and a spiral blade (12) is provided on the tapered tip.