Grounding device applied to power distribution network

Abstract

The invention relates to the related technical field of power distribution networks, in particular to a grounding device applied to a power distribution network, which comprises a base, the base is in threaded connection with a grounding rod of which the lower end is of a conical structure, the upper part of the grounding rod is provided with a first rotating handle, and the first rotating handle is provided with a wiring assembly; and grooves are formed in the bottom of the base and located on the two sides of the grounding rod correspondingly, supporting plates are arranged in the grooves correspondingly, and adjusting pieces used for pushing the supporting plates to stretch out of the grooves are further arranged on the base. The device can realize adjustment of different depths of insertion of the grounding rod into soil, and can ensure that the base can be stably placed on an uneven ground.

Description

Technical Field

[0001] This invention relates to the field of power distribution network technology, and specifically to a grounding device for power distribution network applications. Background Technology

[0002] A power distribution network consists of overhead lines, cables, poles, distribution transformers, disconnect switches, reactive power compensators, and some auxiliary facilities. It plays a crucial role in distributing electrical energy within the power grid. Classification: Power distribution networks can be classified according to voltage level into high-voltage distribution networks, medium-voltage distribution networks, and low-voltage distribution networks.

[0003] In large cities with high load rates, the 220kV power grid also has distribution functions. When using it, grounding protection devices are required. Grounding protection is an important technical measure to prevent electric shock accidents and ensure the normal operation of electrical equipment. Existing grounding protection devices, such as the distribution network grounding protection device with publication number CN213151044U, include a base and a grounding rod. The base has a pin hole and is a cylindrical hollow tubular structure. Symmetrical through holes are provided at the front and rear ends of the outer wall of the base, and a locking component is installed in each through hole. The grounding rod includes a plug rod that is slidably connected to the pin hole. A crossbar is symmetrically connected to the upper end of the plug rod via threads, and a connecting plate is fixed on the crossbar. By designing a base that works in conjunction with the grounding rod, the purpose of quickly positioning and installing the grounding rod can be achieved.

[0004] However, during the insertion of the grounding rod into the ground, the locking groove near the ground surface is prone to filling with soil. This means that when the insertion depth of the grounding rod needs to be readjusted, the soil adhering to the locking groove will affect the proper engagement of the locking bead, thus preventing the grounding rod from being stably connected to the base. Furthermore, during use, the grounding protection device cannot guarantee that the base is stably buried underground, leading to the grounding rod being installed at an angle and potentially causing it to tip over. Summary of the Invention

[0005] The purpose of this invention is to provide a grounding device for power distribution network applications, which can adjust the depth of the grounding rod inserted into the soil and ensure that the base can be stably placed on uneven ground.

[0006] The technical solution of the present invention is as follows: a grounding device for power distribution network application, including a base, a grounding rod with a conical structure at the lower end is threadedly connected to the base, a first rotating handle is provided on the upper part of the grounding rod, and a wiring assembly is provided on the first rotating handle; a groove is provided at the bottom of the base and on both sides of the grounding rod, a support plate is provided in the groove, and an adjusting component is also provided on the base for pushing the support plate out of the groove.

[0007] Furthermore, the adjusting component includes a threaded rod and vertical rods located on both sides of the threaded rod. Both the threaded rod and the vertical rods extend from the top of the base into the groove. The threaded rod is threadedly connected to the base, and the lower end of the threaded rod abuts against or is rotatably connected to the top of the support plate. The lower end of the vertical rod is fixedly connected to the support plate. A protrusion is provided on the outer wall of the end of the vertical rod located on the upper side of the top of the base, and a first elastic element is sleeved on the vertical rod between the protrusion and the top of the base.

[0008] Furthermore, the wiring assembly includes a sleeve with an inner diameter that matches the outer diameter of the first rotary handle. The sleeve is detachably connected to the first rotary handle, and a mounting plate is provided on the sleeve, with mounting holes provided on the mounting plate.

[0009] Furthermore, the inner wall of the sleeve is provided with a blind mounting hole, and a second elastic element and a locking rod are provided in the blind mounting hole. The side wall of the first rotating handle is provided with a locking hole with an inner diameter that is consistent with the outer diameter of the locking rod. The second elastic element is used to push the locking rod into the locking hole.

[0010] Furthermore, the sleeve is provided with a cavity communicating with the locking hole, the cavity is provided with a compression plate with a cross-section consistent with the cavity cross-section, the cavity is provided with a spring abutting against the compression plate, the compression plate is fitted with a sealing ring on its outer periphery, and the side wall of the sleeve is provided with an opening for pushing the compression plate to compress air into the locking hole.

[0011] Furthermore, the lower sidewall of the grounding rod is provided with several telescopic members, which can extend and retract along the radial direction of the grounding rod.

[0012] Furthermore, the grounding rod has a first cavity inside, and the side wall of the grounding rod has the same number of through holes as the telescopic components, and the through holes are connected to the first cavity; Furthermore, the telescopic component includes a first telescopic rod and a second telescopic rod. The first telescopic rod is located inside the through hole, and the outer diameter of the first telescopic rod is the same as the inner diameter of the through hole. A second cavity is provided inside the first telescopic rod. Both ends of the first telescopic rod are provided with connection ports communicating with the second cavity. The inner diameter of the connection port is smaller than the inner diameter of the second cavity. A push plate with an outer diameter consistent with the inner diameter of the second cavity is provided inside the second cavity. One end of the second telescopic rod is provided with a conical tip, and the other end is fixedly connected to the push plate after passing through the connection port.

[0013] Furthermore, a connecting plate is provided at the inner bottom of the first cavity, and a third elastic member is provided on the connecting plate in the same number as the telescopic member. The third elastic member is connected to the push plate. A sealing ring is provided in the through hole and fitted on the first telescopic rod.

[0014] Furthermore, a rotating rod is provided at the top of the grounding rod, a second rotating handle is provided at the upper end of the rotating rod, the lower end of the rotating rod extends into the first cavity of the grounding rod, a connecting block is connected to the end of the rotating rod located in the first cavity, a connecting rod is provided at the bottom of the connecting block, and a piston with an outer diameter consistent with the inner diameter of the first cavity is provided at the lower end of the connecting rod.

[0015] Furthermore, the top of the rotating rod is threadedly connected to the top of the grounding rod, and the lower end of the rotating rod is rotatably connected to the connecting block; the top of the connecting block is provided with a connecting groove, and the side wall of the connecting groove is provided with an annular groove; the lower end of the rotating rod is provided with an annular step located in the annular groove; both side walls of the first cavity are provided with limiting grooves, the limiting grooves are distributed along the axial direction of the grounding rod, and the side wall of the connecting block is provided with a limiting block located in the limiting groove.

[0016] Compared with the prior art, the present invention has the following advantages: The grounding rod is connected to the base via a threaded connection, allowing for adjustment of the depth to which the grounding rod is inserted into the soil. Furthermore, when used on uneven ground, the adjustable mechanism allows for vertical adjustment of the support plate within the groove, ensuring the base rests stably on uneven surfaces and preventing the grounding rod from being inserted at an angle into the soil. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the connection structure between the first rotating rod and the grounding component of the present invention; Figure 3 This is a schematic diagram of the telescopic component structure of the present invention; Figure 4 This is an enlarged schematic diagram of the lower structure of the grounding rod of the present invention; Figure 5 This is a partial structural diagram of the grounding rod of the present invention; In the diagram: 1. Base; 2. Grounding rod; 3. First rotating handle; 4. Second rotating handle; 5. Wiring assembly; 6. Threaded rod; 7. Vertical rod; 8. Support plate; 9. Rotating rod; 10. Telescopic component; 11. Piston; 12. Mounting plate; 13. Mounting hole; 14. Second elastic component; 15. Locking rod; 16. Sleeve; 17. Extrusion plate; 18. Limiting groove; 19. Connecting block; 20. Connecting rod; 21. First telescopic rod; 22. Second telescopic rod; 23. Push plate; 24. First elastic component; 25. Locking hole; 26. Cavity; 27. First cavity; 28. Second cavity; 29. ​​Connecting plate; 30. Third elastic component. Detailed Implementation

[0018] To make the above features and advantages of the present invention more readily understood, specific embodiments are described below in conjunction with the accompanying drawings, but the present invention is not limited thereto.

[0019] In the existing technology, several locking grooves connected to the locking beads are set on the grounding rod, thereby achieving the purpose of inserting the grounding rod into the ground at different depths. However, in actual use, the locking grooves are easily filled with soil. This means that when the position of the grounding rod needs to be readjusted, the soil attached to the locking groove will obstruct the locking beads, causing the grounding rod to be unable to connect with the base.

[0020] refer to Figures 1 to 5 Therefore, this invention provides a grounding device for power distribution network applications, including a base 1. A grounding rod 2 with a conical lower end is threadedly connected to the base 1. A first rotating handle 3 is fixed to the upper part of the grounding rod 2, and a wiring assembly 5 is provided on the first rotating handle 3. Specifically, the grounding rod 2 has external threads, and the base 1 has a connecting hole with an internal thread matching the external threads of the grounding rod 2. Thus, the first rotating handle 3 on the grounding rod 2 rotates the grounding rod 2, allowing the grounding rod 2 located on the base 1 to be gradually inserted into the soil, thereby adjusting the insertion depth of the grounding rod 2. Because the grounding rod 2 is threadedly connected to the base 1, when adjusting the insertion depth of the grounding rod 2, the mating relationship between the external and internal threads can squeeze out the soil adhering to the outer nut, avoiding obstruction of the grounding rod 2's depth adjustment process.

[0021] Meanwhile, to prevent the grounding rod 2 from tilting and inserting into the ground when the device is used in uneven outdoor locations, a groove is provided at the bottom of the base 1 on both sides of the grounding rod 2. A support plate 8 is installed in each groove. The base 1 also has an adjusting mechanism for pushing the support plate 8 out of the groove, thereby adjusting the distance the support plate 8 moves out of the groove. In this way, when the base 1 is installed on uneven ground, the two support plates 8 ensure that the base 1 can be placed horizontally, thus ensuring that the grounding rod 2 can be inserted vertically into the ground.

[0022] In this embodiment, in order to ensure that the adjusting component can adjust the vertical position of the support plate 8 in the groove, and thus ensure that the base 1 can be used on uneven ground, the adjusting component includes a threaded rod 6 and vertical rods 7 located on both sides of the threaded rod 6. The threaded rod 6 and the vertical rods 7 both pass through the top of the base 1 into the groove. The threaded rod 6 is threadedly connected to the base 1, and the lower end of the threaded rod 6 abuts against or is rotatably connected to the top of the support plate 8. The lower end of the vertical rod 7 is fixedly connected to the support plate 8. A protrusion is provided on the outer wall of the end of the vertical rod 7 located on the upper side of the top of the base 1. A first elastic element 24 is sleeved on the vertical rod 7 between the protrusion and the top of the base 1.

[0023] By rotating the threaded rod 6 in the forward direction, it can move towards the support plate 8, thereby pushing the support plate 8 out of the groove. This allows for height adjustment of the support plates 8 located on both sides of the grounding rod 2, ensuring that the base 1 can be placed stably on uneven ground. When the threaded rod 6 is rotated in the reverse direction, it retracts away from the support plate 8. Under the action of the first elastic element 24, it can pull the vertical rod 7 upward, thereby retracting the support plate 8 back into the groove.

[0024] In this embodiment, the wiring assembly 5 includes a sleeve 16 with an inner diameter matching the outer diameter of the first rotating handle 3. To prevent the grounding wire connected to the wiring assembly 5 from rotating synchronously when the grounding rod 2 needs to be rotated, the sleeve 16 is detachably connected to the first rotating handle 3. To connect the grounding wire to the wiring assembly 5, a mounting plate 12 is provided on the sleeve 16. The mounting plate 12 has mounting holes 13 for connecting the grounding wire, thus achieving the connection between the grounding wire and the mounting plate 12. The mounting plate 12, sleeve 16, first rotating handle 3, and grounding rod 2 are all made of metal.

[0025] In this embodiment, in order to enable quick installation between the sleeve 16 and the first rotating handle 3, a blind hole is provided on the inner wall of the sleeve 16. A second elastic element 14 and a locking rod 15 are provided in the blind hole. A locking hole 25 with an inner diameter that is the same as the outer diameter of the locking rod 15 is provided on the side wall of the first rotating handle 3. The second elastic element 14 is used to push the locking rod 15 into the locking hole 25.

[0026] During installation, the sleeve 16 is placed on the first rotary handle 3. When the locking rod 15 moves to the locking hole 25, the second elastic element 14 can push the locking rod 15 into the locking hole 25, thereby realizing the quick connection between the sleeve 16 and the first rotary handle 3.

[0027] In another embodiment, one end of the first rotating handle 3 is a conical structure. In this way, when the first rotating handle 3 is inserted into the sleeve 16, the conical structure of the first rotating handle 3 can squeeze the locking rod 15 into the mounting blind hole, thus preventing the locking rod 15 from blocking the first rotating handle 3 from being inserted into the sleeve 16.

[0028] In this embodiment, the sleeve 16 is provided with a cavity 26 that communicates with the locking hole 25. The cavity 26 is provided with a compression plate 17 whose cross-section is the same as that of the cavity 26. The side wall of the sleeve 16 is provided with an opening for pushing the compression plate 17 to compress air into the locking hole 25.

[0029] When it is necessary to remove the sleeve 16 from the first rotary handle 3, the operator squeezes the compression plate 17 located in the cavity 26 with their fingers through the opening, causing the compression plate 17 to move in the cavity 26 and compress the air in the cavity 26. This allows the air in the cavity 26 to enter the locking hole 25, pushing the locking rod 15 in the locking hole 25 back into the blind mounting hole, removing the constraint of the locking rod 15 on the sleeve 16, thereby enabling the sleeve 16 to be quickly and smoothly removed from the first rotary handle 3.

[0030] In another embodiment, to ensure that the extrusion plate 17 can smoothly compress the air in the cavity 26, a sealing ring is fitted around the outer periphery of the extrusion plate 17. The sealing ring prevents the air in the cavity 26 from leaking through the gap between the extrusion plate 17 and the inner wall of the cavity 26. At the same time, a spring is also provided in the cavity 26 to abut against the extrusion plate 17, ensuring that the extrusion plate 17 can return to its initial position.

[0031] In this embodiment, to ensure that the grounding rod 2 inserted into the soil can be stably fixed in the soil, a plurality of telescopic members 10 are provided on the lower side wall of the grounding rod 2. The telescopic members 10 can extend and retract along the radial direction of the grounding rod 2. After the grounding rod 2 is inserted into the soil, the telescopic members 10 are moved radially along the grounding rod 2, and the telescopic members 10 can be inserted laterally into the soil, further improving the fixing ability of the grounding rod 2 to the soil.

[0032] In this embodiment, the grounding rod 2 has a first cavity 27 inside, and the side wall of the grounding rod 2 has the same number of through holes as the telescopic member 10, and the through holes are connected to the first cavity 27.

[0033] In this embodiment, in order to ensure that the telescopic member 10 can extend and retract radially along the grounding rod 2, the telescopic member 10 includes a first telescopic rod 21 and a second telescopic rod 22. The first telescopic rod 21 is located in the through hole and the outer diameter of the first telescopic rod 21 is the same as the inner diameter of the through hole. A second cavity 28 is provided inside the first telescopic rod 21. Both ends of the first telescopic rod 21 are provided with connection ports communicating with the second cavity 28. The inner diameter of the connection port is smaller than the inner diameter of the second cavity 28. A push plate 23 with an outer diameter that is the same as the inner diameter of the second cavity is provided inside the second cavity 28. One end of the second telescopic rod 22 is provided with a conical tip, and the other end is fixedly connected to the push plate 23 after passing through the connection port.

[0034] The second telescopic rod 22 can extend out from the first telescopic rod 21 under the push of the push plate 23. When the push plate 23 moves to the maximum displacement position in the first cavity 27, the second telescopic rod 22 will pull the first telescopic rod 21 out from the through hole, thereby increasing the overall length of the telescopic component 10, so that the telescopic component 10 can be better inserted into the soil and improve the fixing ability of the grounding rod 2.

[0035] In this embodiment, in order to ensure that the first telescopic rod 21 and the second telescopic rod 22 can extend into the soil from the side wall of the grounding rod 2 in sequence, a rotating rod 9 is provided at the top of the grounding rod 2. The rotating rod 9 is threadedly connected to the top of the grounding rod 2. A second rotating handle 4 is fixed at the upper end of the rotating rod 9. The lower end of the rotating rod 9 extends into the first cavity 27 of the grounding rod 2. A connecting block 19 is provided at the end of the rotating rod 9 located in the first cavity 27. A connecting rod 20 is fixed at the bottom of the connecting block 19. A piston 11 with an outer diameter that is the same as the inner diameter of the first cavity 27 is connected to the lower end of the connecting rod 20.

[0036] The rotating rod 9 can be rotated by the second rotating handle 4, which pushes the piston 11 to move downward in the first cavity. As the piston 11 moves downward, it pushes the air below the first cavity 27 into the second cavity 28 of the first telescopic rod 21. Under the action of air pressure, the second telescopic rod 22 and the first telescopic rod 21 can be pushed out of the through hole, so as to insert the telescopic component 10 laterally into the soil.

[0037] In this embodiment, the inner bottom of the first cavity 27 is also provided with a connecting plate 29, and the connecting plate 29 is provided with a third elastic member 30 in the same number as the telescopic member 10. The third elastic member 30 is connected to the push plate 23, and a sealing ring sleeved on the first telescopic rod 21 is provided in the through hole.

[0038] When disassembly is required, the rotating rod 9 is rotated in the opposite direction, causing it to pull the piston 11 upwards. During this movement within the first cavity 27, the piston 11 generates negative pressure. This pressure, combined with the third elastic element 30, pulls the second telescopic rod 22 back into the first cavity 27. When the third elastic element 30 pulls the push plate 23 back to the end of the second cavity 28, the push plate 23 pulls the first telescopic rod 21 back from the through hole into the first cavity. It should be noted that when the third elastic element 30 is at its maximum deformation, the end of the first telescopic rod 21 does not move out of the through hole. Simultaneously, the length of the second cavity 28 is greater than the sum of the lengths of the push plate 23 and the second telescopic rod 22. Furthermore, by providing a sealing ring fitted onto the first telescopic rod 21 within the through hole, the sealing between the through hole and the first telescopic rod 22 is improved.

[0039] In this embodiment, to prevent the piston 11 from rotating synchronously with the rotating rod 9, the lower end of the rotating rod 9 is rotatably connected to the connecting block 19. Specifically, the top of the connecting block 19 is provided with a connecting groove, the side wall of the connecting groove is provided with an annular groove, and the lower end of the rotating rod 9 is provided with an annular step located within the annular groove. Limiting grooves 18 are provided on both side walls of the upper half of the first cavity 27, and the limiting grooves 18 are distributed along the axial direction of the grounding rod 2. Limiting blocks located within the limiting grooves 18 are provided on the side wall of the connecting block 19. When the rotating rod 9 rotates, the connecting block 19 is prevented from rotating synchronously with the rotating rod 9, thereby achieving the purpose of preventing the piston 11 from rotating.

[0040] The above description is only a preferred embodiment of the present invention. For those skilled in the art, designing grounding devices for different forms of power distribution network applications does not require creative labor based on the teachings of the present invention. All equivalent changes, modifications, substitutions and variations made in accordance with the scope of the patent application of the present invention without departing from the principles and spirit of the present invention shall be covered by the present invention.

Claims

1. A grounding device for power distribution network applications, comprising a base (1), characterized in that, The base (1) is threadedly connected with a grounding rod (2) with a conical lower end, the upper portion of the grounding rod (2) is provided with a first rotating handle (3), and the first rotating handle (3) is provided with a wiring assembly (5); the bottom of the base (1) and on both sides of the grounding rod (2) are provided with a recess, and the recess is provided with a supporting plate (8); and the base (1) is further provided with an adjusting member for pushing the supporting plate (8) to extend out of the recess.

2. A grounding device for power distribution network applications according to claim 1, characterized in that, The adjusting member comprises a threaded rod (6) and vertical rods (7) located on both sides of the threaded rod (6), the threaded rod (6) and the vertical rods (7) penetrate into the recess from the top of the base (1), the threaded rod (6) is threadedly connected with the base (1), and the lower end of the threaded rod (6) is in abutting connection or rotary connection with the top of the supporting plate (8); the lower end of the vertical rod (7) is fixedly connected with the supporting plate (8), and the end portion of the vertical rod (7) located on the upper side of the top of the base (1) is provided with a protrusion, and a first elastic member (24) is arranged on the vertical rod (7) and located between the protrusion and the top of the base (1).

3. A grounding device for power distribution network applications according to claim 1 or 2, characterized in that, The wiring assembly (5) comprises a sleeve (16) with an inner diameter consistent with the outer diameter of the first rotating handle (3), the sleeve (16) is detachably connected with the first rotating handle (3), the sleeve (16) is provided with a mounting plate (12), and the mounting plate (12) is provided with a mounting hole (13).

4. A grounding device for power distribution network applications according to claim 3, characterized in that, An installation blind hole is formed in the inner wall of the sleeve (16), a second elastic member (14) and a locking rod (15) are arranged in the installation blind hole, an inner diameter of a locking hole (25) formed in the side wall of the first rotating handle (3) is consistent with the outer diameter of the locking rod (15), and the second elastic member (14) is used for pushing the locking rod (15) to be inserted into the locking hole (25).

5. A grounding device for power distribution network applications according to claim 4, characterized in that, A cavity (26) in communication with the locking hole (25) is arranged in the sleeve (16), the cavity (26) is provided with an extrusion plate (17) with a cross section consistent with the cross section of the cavity (26), a spring in abutting connection with the extrusion plate (17) is arranged in the cavity (26), a sealing ring is arranged on the outer periphery of the extrusion plate (17), and an opening is formed in the side wall of the sleeve (16) and used for pushing the extrusion plate (17) to extrude air into the locking hole (25).

6. A grounding device for use in an electrical distribution network according to claim 1, 2, 4 or 5, characterized in that A plurality of telescopic members (10) are arranged on the lower side wall of the grounding rod (2), and the telescopic members (10) can be telescoped along the radial direction of the grounding rod (2).

7. A grounding device for power distribution network applications according to claim 6, characterized in that, A first cavity (27) is arranged in the grounding rod (2), a number of through holes equal to the number of the telescopic members (10) are arranged in the side wall of the grounding rod (2), and the through holes are in communication with the first cavity (27). The telescopic part (10) comprises a first telescopic rod (21) and a second telescopic rod (22), the first telescopic rod (21) is located in the through hole and the outer diameter of the first telescopic rod (21) is consistent with the inner diameter of the through hole, the inside of the first telescopic rod (21) is provided with a second cavity (28), both ends of the first telescopic rod (21) are provided with a connecting port in communication with the second cavity (28), the inner diameter of the connecting port is smaller than the inner diameter of the second cavity (28), the second cavity (28) is provided with a push plate (23) with an outer diameter consistent with the inner diameter of the second cavity, and one end of the second telescopic rod (22) is provided with a tapered tip, and the other end is fixedly connected with the push plate (23) after passing through the connecting port.

8. A grounding device for power distribution network applications according to claim 7, characterized in that, The inner bottom of the first cavity (27) is further provided with a connecting plate (29), the connecting plate (29) is provided with a third elastic element (30) in a number same as that of the telescopic parts (10), and the third elastic element (30) is connected with the push plate (23); the through hole is provided with a sealing ring sleeved on the first telescopic rod (21).

9. A grounding device for power distribution network applications according to claim 7 or 8, characterized in that, The top of the grounding rod (2) is provided with a rotating rod (9), the upper end of the rotating rod (9) is provided with a second rotating handle (4), the lower end of the rotating rod (9) extends into the first cavity (27) of the grounding rod (2), and the end of the rotating rod (9) in the first cavity (27) is connected with a connecting block (19), the bottom of the connecting block (19) is provided with a connecting rod (20), and the lower end of the connecting rod (20) is provided with a piston (11) with an outer diameter consistent with the inner diameter of the first cavity (27).

10. A grounding device for power distribution network applications according to claim 9, characterized in that, The rotating rod (9) is threadedly connected with the top of the grounding rod (2), and the lower end of the rotating rod (9) is rotationally connected with the connecting block (19); the top of the connecting block (19) is provided with a connecting groove, the side wall of the connecting groove is provided with an annular groove, and the lower end of the rotating rod (9) is provided with an annular step located in the annular groove; the two side walls of the first cavity (27) are provided with limiting grooves (18), the limiting grooves (18) are distributed along the axial direction of the grounding rod (2), and the side wall of the connecting block (19) is provided with a limiting block located in the limiting groove (18).

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