Power cabinet grounding device with locking anti-falling structure

Abstract

The invention discloses a power cabinet grounding device with a locking anti-falling structure, and relates to the technical field of power cabinet grounding. An L-shaped fixing frame is mounted on the side wall of the power cabinet through bolts; a connecting assembly is mounted on a transverse plate of the L-shaped fixing frame; the connecting assembly and the grounding block are installed through the locking anti-falling structure. The locking anti-falling structure is mounted in the connecting assembly; the connecting assembly comprises a fixing sleeve; the top of the fixing sleeve and the L-shaped fixing frame are fixedly installed. A first cavity and a movable cavity are formed in the fixed sleeve; one end of the grounding block is aligned with the conical column to be pushed upwards, the bottoms of the two hook frames installed on the ear plate of the movable block are opened towards the two sides, the grounding block can slide in conveniently, after the grounding block is attached to the bottom of the movable block, the barbs at the bottoms of the hook frames are located in the two clamping grooves inserted into the bottom of the grounding block, and the reset effect is achieved under the action of the rotating shaft and the torsion spring. The inclined surfaces of the hook frames are matched with the inclined edges, so that the two hook frames are prevented from automatically opening towards two sides, and the effect of the grounding block anti-falling structure is realized.

Description

Technical Field

[0001] This invention relates specifically to the field of power cabinet grounding technology, and more specifically to a power cabinet grounding device with a locking and anti-disengagement structure. Background Technology

[0002] The grounding of the power cabinet falls under the category of protective grounding. Through the electrical connection between the cabinet, the grounding wire and the grounding body, leakage current is quickly discharged in the event of an insulation fault, preventing the cabinet from becoming energized and causing electric shock to personnel. At the same time, it suppresses overvoltage, lightning strikes and electromagnetic interference, ensuring stable operation of the equipment. As the core equipment for power distribution, control, and protection in a power system, the protective grounding system of the power cabinet is a key line of defense for ensuring personal safety and stable equipment operation. The core function of the protective grounding is to quickly discharge the fault current to the ground through the grounding conductor when there is an insulation fault in the cabinet or leakage of internal components, thereby reducing the voltage of the cabinet to ground and avoiding electric shock accidents. At the same time, it can also suppress lightning overvoltage and electromagnetic interference, ensuring the normal operation of precision components inside the power cabinet. Some power cabinets use two main methods: First, the grounding conductor is directly welded to the cabinet body. While this provides a strong initial connection and good conductivity, the welded structure is permanent. Subsequent cabinet relocation, grounding electrode replacement, and internal component maintenance require destructive disassembly, which is inefficient and may damage the cabinet's structural strength, destroy the anti-corrosion coating, and exacerbate future corrosion risks. Second, the grounding conductor is fixed to the cabinet's grounding terminal and grounding busbar using bolts and nuts. However, in actual operation, inductive components such as transformers and reactors inside the power cabinet generate continuous vibrations. Combined with the thermal expansion and contraction of metals due to fluctuating ambient temperatures, this causes the preload of the threaded joints to gradually decrease, leading to thread gaps, loose nuts, or even detachment. Currently, existing power cabinets typically require grounding both the internal components and the cabinet itself to prevent leaks from damaged cables into the cabinet, which could cause electric shocks to workers upon contact. A search revealed that Chinese patent application CN202421271862.3 discloses a power cabinet grounding device with a locking and anti-detachment structure; it includes a wiring terminal, and a mounting ear plate is provided on the outside of the wiring terminal; the power cabinet grounding device with a locking and anti-detachment structure inserts the grounding wire into the locking groove along the connecting groove, and the output end of the electric telescopic rod drives the pressure sensor, the clamping plate and the auxiliary slider to move through the external controller, and the clamping plate clamps the end of the grounding wire, and the detection end of the pressure sensor monitors the pressure value in real time before stopping the operation of the output end of the electric telescopic rod; The structure in the aforementioned patent uses a terminal block and mounting plate for grounding. Multiple connection slots are provided on the terminal block. While this achieves a contact effect during grounding, the connection between the wire and the anti-disconnection component can become loose when the wire is connected to the terminal block. This results in a loose connection even when the connection is not actually disconnected. Furthermore, power cabinets typically connect directly to the grounding pin using an anti-disconnection locking structure, making the grounding method in the aforementioned patent rather cumbersome. Summary of the Invention

[0003] The purpose of this invention is to provide a power cabinet grounding device with a locking and anti-detachment structure. In this device, the connecting components are fixedly installed on an L-shaped fixing frame with bolts. Through the cooperation between the fixing sleeve and the locking and anti-detachment structure, the movable block can move up and down along the movable cavity. During the movement, two symmetrical hooks movably installed on the side wall of the movable block open or close, thereby connecting the grounding blocks. Two springs inside the movable block push the movable block downward, ensuring that after the movable block is connected to the grounding block, the grounding block always maintains downward contact with the ground, thus ensuring the grounding effect; thereby solving the problems of the aforementioned background technology.

[0004] To achieve the above objectives, the present invention provides the following technical solution: A grounding device for a power cabinet with a locking and anti-detachment structure includes a power cabinet; an L-shaped fixing frame is fixedly installed on the bottom of the side wall of the power cabinet by bolts; a connecting component is fixedly installed on the horizontal plate of the L-shaped fixing frame; the bottom of the connecting component is detachably installed to the grounding block through the locking and anti-detachment structure. The locking and anti-detachment structure is movably installed inside the connecting assembly; the connecting assembly includes a fixing sleeve; the top of the fixing sleeve is fixedly installed to the L-shaped fixing bracket by bolts; a first cavity and a movable cavity are opened on the axis of the fixing sleeve; wherein, a second cavity is opened symmetrically on both sides of the first cavity.

[0005] As a further technical solution of the present invention, the locking and anti-disengagement structure includes a movable block; the top of the movable block is integrally set with the insertion post; the insertion post has a double round head groove; the two sides of the insertion post have symmetrical mounting grooves; one end of the spring is fixedly installed in the mounting groove; the end of the spring away from the mounting groove is fixedly installed with the top of the second cavity.

[0006] As a further technical solution of the present invention, the insert post and the first cavity; the double round head groove and the connecting rod opened on the insert post; the connecting rod passes through the fixing sleeve.

[0007] As a further technical solution of the present invention, the bottom edge of the fixed sleeve is set with a bevel; the inclination angle of the bevel is between 30° and 45°; the bevel is fitted and connected to the hook installed at the bottom of the side wall of the movable block.

[0008] As a further technical solution of the present invention, two symmetrically arranged ear plates are integrally provided on the bottom of the movable block; the ear plates are provided with circular grooves to facilitate the movable installation of the hook frame; the hook frame is movably installed with the ear plates through a rotating shaft; a torsion spring is sleeved on the outer wall of the rotating shaft.

[0009] As a further technical solution of the present invention, the inner side of the top of the hook frame is inclined; the inclined surface cooperates with the inclined side; the bottom of the hook frame is snapped and fixed to the grounding block.

[0010] As a further technical solution of the present invention, the bottom edge of the grounding block is provided with two symmetrical slots; the hook at the bottom of the hook frame extends into the slot.

[0011] As a further technical solution of the present invention, the bottom of the movable block is integrally provided with a conical column; the conical column is inserted into a slot opened inside the grounding block.

[0012] Compared with the prior art, the beneficial effects of the present invention are: 1. In use, the L-shaped fixing bracket is fixedly installed on the bottom of the side wall of the power cabinet with bolts, and the connecting component is fixedly installed on the L-shaped fixing bracket with bolts. By adjusting the height of the connecting component, the bottom of the grounding block connected by the locking anti-detachment structure can be tightly attached to the ground, avoiding gaps between the grounding block, the locking anti-detachment structure and the ground. 2. In this invention, during connection, the movable block is embedded into the movable cavity. The cooperation between the double round-headed groove on the top post of the movable block and the through connecting rod on the fixed sleeve prevents the movable block from falling out of the movable cavity. The cooperation between the connecting rod and the double round-headed groove ensures the correspondence between the mounting groove on the top of the movable block and the second cavity inside the fixed sleeve. The two ends of the spring are fixedly installed in the mounting groove and the second cavity respectively, preventing the spring from separating from the movable block and the fixed sleeve during connection. 3. In this invention, when installing the grounding block, the end of the grounding block with the locking edge is aligned with the conical column at the bottom of the movable block and pushed upward. At this time, the bottom of the two hooks installed on the side wall ear plate of the movable block opens to both sides, making it easier for the grounding block to slide in. After the grounding block and the bottom of the movable block are in contact, the barbs at the bottom of the hooks are located in the two slots inserted into the bottom of the grounding block, ensuring the stability of the connection. After installation, the inclined surface inside the top of the hooks cooperates with the inclined edge at the bottom of the fixing sleeve, thereby preventing the two hooks from automatically opening to both sides and achieving the effect of the grounding block anti-detachment structure. 4. In this invention, when disassembling the grounding block, the movable block is pulled down to separate the inclined surface of the hook from the inclined edge of the bottom of the fixed sleeve. Then, the two hooks are manually pressed to slide the hooks out of the slots, thereby separating the grounding block from the bottom of the movable block. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 In this invention Figure 1 A schematic diagram of the rear structure.

[0015] Figure 3 In this invention Figure 2 A schematic diagram of the assembly of a partial structure in the middle.

[0016] Figure 4 In this invention Figure 3 Bottom view.

[0017] Figure 5 In this invention Figure 4 Main view of a partial structure in the middle.

[0018] Figure 6 In this invention Figure 5 Side view.

[0019] Figure 7 In this invention Figure 5 Sectional view of AA.

[0020] Figure 8 In this invention Figure 6 BB section view.

[0021] Figure 9 In this invention Figure 5 A breakdown diagram.

[0022] Figure 10 In this invention Figure 9 A bottom view of the internal structure of the connecting component.

[0023] Figure 11 In this invention Figure 9A schematic diagram showing the disassembly of the central locking anti-detachment structure and the hook frame.

[0024] Figure 12 This is the present invention. Figure 11 A three-dimensional structural diagram of the central hook frame.

[0025] Figure 13 In this invention Figure 7 Enlarged view of point C.

[0026] In the diagram: 1-Power cabinet, 2-L-shaped fixing frame, 3-Grounding block, 4-Connecting component, 40-Fixing sleeve, 41-Connecting rod, 42-Hydraulic side, 43-First cavity, 44-Second cavity, 45-Moving cavity, 5-Locking and anti-detachment structure, 50-Moving block, 51-Ear plate, 52-Insertion post, 53-Double round head groove, 54-Mounting groove, 55-Spring, 56-Conical column, 6-Hook bracket, 7-Rotating shaft, 8-Torsion spring, 9-Card slot. Detailed Implementation

[0027] 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.

[0028] Please see Figure 1-13 In this embodiment of the invention, a power cabinet grounding device with a locking and anti-detachment structure includes a power cabinet 1; an L-shaped fixing frame 2 is fixedly installed on the bottom side wall of the power cabinet 1 by bolts; a connecting component 4 is fixedly installed on the horizontal plate of the L-shaped fixing frame 2; the bottom of the connecting component 4 is detachably installed to the grounding block 3 through a locking and anti-detachment structure 5. The locking and anti-detachment structure 5 is movably installed inside the connecting assembly 4; the connecting assembly 4 includes a fixing sleeve 40; the top of the fixing sleeve 40 is fixedly installed to the L-shaped fixing bracket 2 by bolts; a first cavity 43 and a movable cavity 45 are provided on the axis of the fixing sleeve 40; wherein, a second cavity 44 is provided on both sides of the first cavity 43 in a symmetrical manner; The locking and anti-disengagement structure 5 includes a movable block 50; the top of the movable block 50 is integrally formed with the insertion post 52; the insertion post 52 has a double round head groove 53; the two sides of the insertion post 52 have symmetrical mounting grooves 54; one end of the spring 55 is fixedly installed in the mounting groove 54; the end of the spring 55 away from the mounting groove 54 is fixedly installed with the top of the second cavity 44.

[0029] By adopting the above technical solution, during use, the L-shaped fixing bracket 2 is fixedly installed on the bottom of the side wall of the power cabinet 1 with bolts, and the connecting component 4 is fixedly installed on the L-shaped fixing bracket 2 with bolts. By adjusting the height of the connecting component 4, the bottom of the grounding block 3 connected by the locking anti-detachment structure 5 can be tightly attached to the ground, avoiding gaps between the grounding block 3, the locking anti-detachment structure 5, and the ground.

[0030] In this embodiment, the insertion post 52 is connected to the first cavity 43; the double round head groove 53 opened on the insertion post 52 is connected to the connecting rod 41; the connecting rod 41 passes through the fixing sleeve 40. In this embodiment, the bottom edge of the fixed sleeve 40 is provided as a bevel 42; the inclination angle of the bevel 42 is between 30° and 45°; the bevel 42 is fitted and connected to the hook 6 installed at the bottom of the side wall of the movable block 50. By adopting the above technical solution, during connection, the movable block 50 is embedded into the movable cavity 45. The cooperation between the double round head groove 53 on the top insert 52 of the movable block 50 and the through connecting rod 41 on the fixed sleeve 40 prevents the movable block 50 from falling out of the movable cavity 45. The cooperation between the connecting rod 41 and the double round head groove 53 ensures the correspondence between the mounting groove 54 on the top of the movable block 50 and the second cavity 44 inside the fixed sleeve 40. The two ends of the spring 55 are fixedly installed to the mounting groove 54 and the second cavity 44 respectively, preventing the spring 55 from separating from the movable block 50 and the fixed sleeve 40 during connection.

[0031] Furthermore, the bottom of the movable block 50 is integrally provided with two symmetrically arranged ear plates 51; the ear plates 51 have circular grooves inside to facilitate the movable installation of the hook frame 6; the hook frame 6 is movably installed with the ear plates 51 via a rotating shaft 7; a torsion spring 8 is sleeved on the outer wall of the rotating shaft 7. In this embodiment, the top inner side of the hook frame 6 is inclined; the inclined surface cooperates with the inclined side 42; the bottom of the hook frame 6 is snapped and fixed to the grounding block 3; By adopting the above technical solution, when installing the grounding block 3, the end of the grounding block 3 with the locking edge is aligned with the tapered column 56 at the bottom of the movable block 50 and pushed upward. At this time, the bottoms of the two hooks 6 installed on the side ear plate 51 of the movable block 50 open to both sides, making it easier for the grounding block 3 to slide in. After the grounding block 3 is attached to the bottom of the movable block 50, the barbs at the bottom of the hooks 6 are located in the two slots 9 inserted into the bottom of the grounding block 3, ensuring the stability of the connection. After installation, the inclined surface inside the top of the hooks 6 cooperates with the inclined edge 42 at the bottom of the fixed sleeve 40, thereby preventing the two hooks 6 from automatically opening to both sides and achieving the effect of the anti-detachment structure of the grounding block 3.

[0032] In this embodiment, the bottom edge of the grounding block 3 is provided with two symmetrical slots 9; the hook at the bottom of the hook bracket 6 extends into the slot 9. The bottom of the movable block 50 is also integrally provided with a conical column 56; the conical column 56 is inserted into the slot opened inside the grounding block 3; By adopting the above technical solution, when disassembling the grounding block 3, pull down the movable block 50 to separate the inclined surface of the hook 6 from the inclined edge 42 at the bottom of the fixed sleeve 40, and then manually press the two hooks 6 to make the hooks 6 slide out of the slot 9, thereby separating the grounding block 3 from the bottom of the movable block 50.

[0033] The working principle of this invention is as follows: When in use, the L-shaped fixing bracket 2 is fixedly installed on the bottom of the side wall of the power cabinet 1 with bolts, and the connecting component 4 is fixedly installed on the L-shaped fixing bracket 2 with bolts. By adjusting the height of the connecting component 4, the bottom of the grounding block 3 connected by the locking anti-detachment structure 5 can be tightly attached to the ground, thus avoiding gaps between the grounding block 3, the locking anti-detachment structure 5, and the ground. During connection, the movable block 50 is inserted into the movable cavity 45. The cooperation between the double round head groove 53 on the top insert post 52 of the movable block 50 and the through connecting rod 41 on the fixed sleeve 40 prevents the movable block 50 from falling out of the movable cavity 45. The cooperation between the connecting rod 41 and the double round head groove 53 ensures the correspondence between the mounting groove 54 on the top of the movable block 50 and the second cavity 44 inside the fixed sleeve 40. The two ends of the spring 55 are fixedly installed to the mounting groove 54 and the second cavity 44 respectively to prevent the spring 55 from separating from the movable block 50 and the fixed sleeve 40 during connection. When installing the grounding block 3, align the end of the grounding block 3 with the retaining edge with the tapered post 56 at the bottom of the movable block 50 and push it upward. At this time, the bottom of the two hooks 6 installed on the side ear plate 51 of the movable block 50 opens to both sides, making it easier for the grounding block 3 to slide in. After the grounding block 3 is in contact with the bottom of the movable block 50, the barbs at the bottom of the hooks 6 are located in the two retaining slots 9 inserted into the bottom of the grounding block 3, ensuring the stability of the connection. After installation, the inclined surface inside the top of the hooks 6 cooperates with the inclined edge 42 at the bottom of the fixed sleeve 40, thereby preventing the two hooks 6 from automatically opening to both sides and achieving the effect of the anti-detachment structure of the grounding block 3. When disassembling the grounding block 3, pull down the movable block 50 to separate the inclined surface of the hook 6 from the inclined edge 42 at the bottom of the fixed sleeve 40. Then manually press the two hooks 6 to slide them out of the slot 9, thereby separating the grounding block 3 from the bottom of the movable block 50.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A grounding device for a power cabinet with a locking and anti-disengagement structure, characterized in that: Includes an electrical cabinet (1); an L-shaped fixing frame (2) is fixedly installed on the bottom side wall of the electrical cabinet (1) by bolts; a connecting component (4) is fixedly installed on the horizontal plate of the L-shaped fixing frame (2); the bottom of the connecting component (4) is detachably installed to the grounding block (3) through a locking anti-detachment structure (5); The locking anti-detachment structure (5) is movably installed inside the connecting assembly (4); the connecting assembly (4) includes a fixing sleeve (40); the top of the fixing sleeve (40) is fixedly installed to the L-shaped fixing bracket (2) by bolts; a first cavity (43) and a movable cavity (45) are provided on the axis of the fixing sleeve (40); wherein; a second cavity (44) is provided on both sides of the first cavity (43) in a symmetrical manner.

2. The power cabinet grounding device with a locking and anti-disengagement structure according to claim 1, characterized in that: The locking and anti-disengagement structure (5) includes a movable block (50); the top of the movable block (50) is integrally set with the insert post (52); the insert post (52) is provided with a double round head groove (53); the insert post (52) is provided with symmetrical mounting grooves (54) on both sides; one end of the spring (55) is fixedly installed in the mounting groove (54); the end of the spring (55) away from the mounting groove (54) is fixedly installed with the top of the second cavity (44).

3. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 2, characterized in that: The insert (52) and the first cavity (43); the double round head groove (53) opened on the insert (52) and the connecting rod (41); the connecting rod (41) passes through the fixing sleeve (40).

4. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 3, characterized in that: The bottom edge of the fixed sleeve (40) is set with a bevel (42); the inclination angle of the bevel (42) is between 30° and 45°; the bevel (42) is fitted and connected to the hook (6) installed at the bottom of the side wall of the movable block (50).

5. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 4, characterized in that: The movable block (50) has two symmetrically arranged ear plates (51) integrally arranged on its bottom; the ear plates (51) have a circular groove inside for easy installation of the hook frame (6); the hook frame (6) is movably installed with the ear plates (51) through a rotating shaft (7); a torsion spring (8) is sleeved on the outer wall of the rotating shaft (7).

6. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 5, characterized in that: The hook frame (6) is inclined on the inner side of the top; the inclined surface cooperates with the inclined side (42); the bottom of the hook frame (6) is snapped and fixed to the grounding block (3).

7. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 4, characterized in that: The grounding block (3) has two symmetrical slots (9) at the bottom edge; the hook at the bottom of the hook frame (6) extends into the slot (9).

8. A power cabinet grounding device with a locking and anti-disengagement structure according to claim 7, characterized in that: The bottom of the movable block (50) is also integrally provided with a conical column (56); the conical column (56) is inserted into the empty groove opened inside the grounding block (3).

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