Grounding device for low-voltage overhead line of distribution network

Abstract

The utility model discloses a grounding device for a low-voltage overhead line of a distribution network, which comprises a conductive grounding pillar, an insulating support is connected onto the conductive grounding pillar through a threaded lock sleeve, and an insulating clamping plate for insulating and clamping the low-voltage overhead line is arranged on one side of the upper end face of the insulating support. An insulating support is arranged on a conductive grounding pillar, a movable insulating clamping plate is slidably arranged on the insulating support, an insulating clamping plate is fixedly arranged on the insulating support, and rubber protection clamping sleeves are arranged at the two ends of an inner side arc-shaped clamping groove in front of and behind the movable insulating clamping plate and the insulating clamping plate. The movable insulation clamping plate is arranged on the movable insulation clamping plate, movably penetrates through the insulation clamping plate and enables the limiting insertion rod to be inserted into the limiting insertion hole for limiting, so that the movable insulation clamping plate is grounded, clamped and fixed when the low-voltage overhead line utilizes the locking rod; and meanwhile, the rubber protection jacket is used for protecting the steering grounding of the clamping side end in the clamping rotation direction of the low-voltage overhead line, so that the steering grounding of the low-voltage overhead line is further improved, and a better protection effect is achieved.

Description

Technical Field

[0001] This utility model belongs to the field of grounding technology for low-voltage overhead lines, and specifically relates to a grounding device for low-voltage overhead lines in distribution networks. Background Technology

[0002] Grounding refers to connecting equipment, overhead power line towers, lightning protection wires, and surge arresters to the earth using grounding wires and grounding electrodes. A grounding electrode is a metal conductor buried in the ground and in contact with the earth. There are two types: natural grounding electrodes and artificial grounding electrodes. Natural grounding electrodes are metal components, tower foundations, and guy wires that are directly in contact with the earth. Artificial grounding electrodes are specially laid metal conductors. According to different laying methods, they are further divided into horizontal grounding electrodes and vertical grounding electrodes. Horizontal grounding electrodes are generally made of round steel or flat steel. The length and number of grounding electrodes are determined according to the requirements of the grounding resistance value. Vertical grounding electrodes are laid vertically in the ground and are generally made of angle steel or steel pipes. In order to make the connection between the grounding electrode and the earth reliable and to reduce the grounding resistance, it is necessary to use a grounding device to connect the overhead power transmission line to the earth.

[0003] To address this, a grounding device for switching power transmission lines, with announcement number "CN217281485U", includes a conductive support post, locking bolts, a conductive sleeve, and a clamp frame. The conductive sleeve is fitted onto the outer wall of the conductive support post and is slidably connected to it. Two sets of locking bolts are provided on the outer wall of the conductive sleeve, connecting it to the conductive support post. A conductive rod is provided on the outer wall of the conductive sleeve, and a hinge bolt is installed at the end of the conductive sleeve near the conductive rod, connecting it to the rod. A stop block is installed at the top of the conductive support post, and its bottom end is fixedly connected to the conductive support post. This design provides convenient switching support for the grounding device for switching power transmission lines, improves the connection strength during use, and facilitates the connection and fixation of the grounding device to the line.

[0004] However, for the aforementioned overhead power transmission line switching and grounding device, although rotating the handle, driven by the threaded engagement of the threaded rod and threaded block, causes the threaded rod to rotate, which in turn drives the clamping disc to move, and with the cooperation of the stop block, the clamping disc clamps the external line to facilitate the connection of the overhead power transmission line switching and grounding device with the line, thus achieving rapid clamping and fixing of the overhead power transmission line switching and grounding, the following obvious defects still exist in use: When the clamping disc clamps and grounds the low-voltage overhead line, because the inner side of the clamping disc is flat and the two ends of the clamping disc are flat angles without contact surface turning protection, the low-voltage overhead line is easily squeezed and pressed against the corners of the flat angles on both sides of the clamping disc during the switching and grounding process, resulting in the problem of damage and leakage of the low-voltage overhead line surface at the corners of the clamping disc. Utility Model Content

[0005] The purpose of this utility model is to provide a grounding device for low-voltage overhead power lines in power distribution networks to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a grounding device for a low-voltage overhead power line in a distribution network, comprising:

[0007] A conductive grounding post is provided, on which an insulating support for supporting and grounding a low-voltage overhead line is connected by a threaded locking sleeve. An insulating clamp is provided on one side of the upper end face of the insulating support for insulatingly clamping the low-voltage overhead line. A movable insulating clamp is provided on the corresponding side of the insulating clamp for slidably locking and clamping the low-voltage overhead line. The front and rear ends of the arc-shaped clamping grooves on the inner sides of the insulating clamp and the movable insulating clamp are provided with rubber protective sleeves for supporting and protecting the overhead line from being turned.

[0008] The V-shaped conductive support rod has two extended support rods movably connected to conductive locking sleeves fitted onto the conductive grounding post, and the other end of the V-shaped conductive support rod is movably connected to a transition mounting plate for transition support. The bottom of the conductive grounding post is threadedly connected to an extension conductive grounding support rod for extending the conductive grounding post.

[0009] Preferably, the end of the insulating support is provided with a strip-shaped positioning groove, and the inner side of the strip-shaped positioning groove is provided with a locking rod threaded through to the outer side of the insulating support, so that the insulating clamp on the insulating support can move to clamp and ground the low-voltage overhead line.

[0010] Preferably, the bottom of the movable insulating clamp is provided with a guide drive block that slides in a strip-shaped positioning groove, and the guide drive block is threaded through the locking rod, so as to realize the sliding of the movable insulating clamp to clamp and ground the low-voltage overhead line.

[0011] Preferably, the bottom side of the inner clamping groove of the movable insulating clamp is provided with a support block that extends to the outer side of the insulating clamp. The support block is provided with limiting holes evenly distributed. A limiting rod is inserted into the limiting hole at the outer end of the support block, which can ensure that the movable insulating clamp maintains the firmness of the clamp after clamping the low-voltage overhead line.

[0012] Preferably, the conductive grounding support post and the extended conductive grounding support rod are evenly provided on one side with internal threaded locking holes for locking with screws after the conductive locking sleeve is fitted, and the bottom end of the conductive grounding support post is provided with an internal threaded groove. One end of the extended conductive grounding support rod is provided with a threaded locking post that locks with the internal threaded groove, thereby realizing stable grounding support for the V-shaped conductive support post to the conductive grounding support post.

[0013] Preferably, the inner side of the V-shaped conductive support rod is provided with a reinforcing vertical rod to strengthen the grounding stability of the low-voltage overhead line and enhance the overall support strength of the V-shaped conductive support rod.

[0014] Compared with the prior art, the technical effects and advantages of this utility model are as follows: The grounding device for the low-voltage overhead line of the distribution network, through the insulating support set on the conductive grounding post, the movable insulating clamp plate slidably set on the insulating support and the fixed insulating clamp plate, as well as the rubber protective sleeves set at both ends of the inner arc-shaped clamping groove of the movable insulating clamp plate and the insulating clamp plate, and the limiter set on the movable insulating clamp plate that passes through the insulating clamp plate and inserts the limiter into the limiter hole, allows the low-voltage overhead line to be grounded and clamped by the movable insulating clamp plate when using the locking rod. At the same time, the rubber protective sleeves protect the clamping edge from grounding during the clamping rotation of the low-voltage overhead line, avoiding the problem of damage to the surface of the low-voltage overhead line due to contact with the corner of the clamping part, and further improving the protection effect of the low-voltage overhead line turning grounding.

[0015] The V-shaped conductive support rod, secured to the conductive grounding post with two conductive locking sleeves, provides robust support for low-voltage overhead lines with long spacing, preventing bending and breakage due to insufficient support strength during typhoons. This further enhances the stability and robustness of the grounding support for low-voltage overhead lines. The conductive grounding post, with its internal threaded groove and threaded locking post, is connected to the extended conductive grounding support rod. This allows for the extension of the conductive grounding post to support low-voltage overhead lines at varying grounding heights, thus enabling grounding and robust support for low-voltage overhead lines at various distances. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a top view schematic diagram of the insulating support structure of this utility model;

[0018] Figure 3 This is an exploded structural diagram of the conductive grounding support rod and the extended conductive grounding support rod of this utility model.

[0019] In the diagram: 1. Conductive grounding support post; 2. Insulating support; 3. Insulating clamp; 4. Movable insulating clamp; 5. V-shaped conductive support rod; 6. Conductive locking sleeve; 7. Adapter mounting plate; 8. Extended conductive grounding support rod; 9. Rubber protective sleeve; 10. Strip positioning groove; 11. Locking rod; 12. Guide drive block; 13. Support block; 14. Limiting insertion hole; 15. Limiting insertion rod; 16. Internal threaded locking hole; 17. Internal threaded groove; 18. Threaded locking post; 19. Reinforcing vertical rod. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution: a grounding device for a low-voltage overhead power line in a distribution network, comprising:

[0022] The conductive grounding post 1 has an insulating support 2 connected to it via a threaded locking sleeve for supporting and grounding the low-voltage overhead line. The insulating support 2 has an insulating clamp 3 on one side of its upper end face for insulatingly clamping the low-voltage overhead line. The insulating clamp 3 is fixed to the right side of the end of the insulating support 2. The inner side of the insulating clamp 3 has an arc-shaped clamping groove that overlaps with the outside of the line for grounding support. The corresponding side of the insulating clamp 3 has a movable insulating clamp 4 that is slidably locked to clamp the low-voltage overhead line. The movable insulating clamp 4 also has an arc-shaped clamping groove and serves as an insulating grounding function. The front and rear ends of the arc-shaped clamping grooves on the inner sides of the insulating clamp 3 and the movable insulating clamp 4 are provided with rubber protective sleeves 9 for supporting and protecting the overhead line from being pressed and turned. This protects the clamped position at the edge of the low-voltage overhead line after it is insulated and clamped.

[0023] V-shaped conductive support rod 5, with two extended support rods movably connected to conductive locking sleeves 6 sleeved on conductive grounding support post 1, providing direct vertical support for conductive grounding support post 1. The other end of V-shaped conductive support rod 5 is movably connected to a transition mounting plate 7 for transition support and fixation, which facilitates the installation of the low-voltage overhead line of the grounding support on the grounding pile using the transition mounting plate 7. The bottom of conductive grounding support post 1 is threadedly connected to an extension conductive grounding support rod 8 for extending conductive grounding support post 1, thereby extending the length of conductive grounding support post 1.

[0024] The insulating support 2 has a strip-shaped positioning groove 10 at its end, allowing the movable insulating clamp 4 to slide laterally to support the line. The inner side of the strip-shaped positioning groove 10 has a locking rod 11 threaded through to the outer side of the insulating support 2, which drives the guide drive block 12 to slide within the strip-shaped positioning groove 10. The bottom of the movable insulating clamp 4 has a guide drive block 12 that slides within the strip-shaped positioning groove 10, causing the movable insulating clamp 4 to move and combine with the insulating clamp 3 for clamping and grounding. The guide drive block 12 is threaded through the locking rod 11. The inner side of the movable insulating clamp 4 has a support block 13 that extends to the outer side of the insulating clamp 3. This block provides support and protection for the low-voltage overhead line and improves the clamping tightness of the line. The support block 13 has evenly spaced limiting holes 14. A limiting rod 15 is inserted into the limiting hole 14 at the outer end of the support block 13, ensuring that the movable insulating clamp 4 always maintains the clamping force on the low-voltage overhead line and does not loosen or detach.

[0025] The conductive grounding support post 1 and the extended conductive grounding support rod 8 are evenly provided with internal threaded locking holes 16 on one side, which are used to lock the conductive locking sleeve 6 with screws. This allows the conductive locking sleeve 6 to be locked onto the conductive grounding support post 1. The bottom end of the conductive grounding support post 1 is provided with an internal threaded groove 17. One end of the extended conductive grounding support rod 8 is provided with a threaded locking post 18 that is locked with the internal threaded groove 17. The inner side of the V-shaped conductive support rod 5 is provided with a reinforcing vertical rod 19 to strengthen the stable support of the low-voltage overhead line grounding of the V-shaped conductive support rod 5, so that the V-shaped conductive support rod 5 strengthens the stable and firm support of the low-voltage overhead line.

[0026] Specifically, in use, firstly, the conductive locking sleeve 6 is fitted onto the surface of the conductive grounding support post 1, and then the bolt is inserted into the interior of the conductive locking sleeve 6 and locked into the internal threaded locking hole 16. The bolt connects the conductive locking sleeve 6 and the conductive grounding support post 1 together, thereby locking and fixing the V-shaped conductive support rod 5 to the conductive grounding support post 1. The V-shaped conductive support rod 5 can strengthen the firm support of the conductive grounding support post 1, avoiding deformation and breakage due to low swing inertia. Under the switching of the conductive grounding support post 1, the grounding of the low-voltage overhead line is reversed. This is achieved through the insulating support 2 set on the conductive grounding support post 1, the movable insulating clamp 4 slidably set on the insulating support 2, and the fixed insulating clamp 3, as well as the movable insulating... Rubber protective sleeves 9 are provided at both ends of the inner arc-shaped clamping groove of the insulating clamping plate 4 and the insulating clamping plate 3. The movable insulating clamping plate 4 is provided with a movable limit rod 15 that passes through the insulating clamping plate 3 and is inserted into the limit hole 14. This allows the low-voltage overhead line to be grounded and clamped by the locking rod 11. At the same time, the rubber protective sleeves 9 protect the clamping edge from grounding during the clamping rotation of the low-voltage overhead line, avoiding damage to the surface of the low-voltage overhead line due to contact with the corner of the clamping part. This further improves the protection effect of the low-voltage overhead line turning grounding, thus facilitating the connection and fixation of the overhead transmission line turning grounding part to the ground to complete the grounding work.

[0027] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A grounding device for a low-voltage overhead power line in a distribution network, characterized in that, include: A conductive grounding support post (1) is provided with an insulating support (2) for supporting and grounding a low-voltage overhead line via a threaded locking sleeve. An insulating clamp (3) for insulating and clamping the low-voltage overhead line is provided on one side of the upper end face of the insulating support post (2). A movable insulating clamp (4) for clamping the low-voltage overhead line is provided on the corresponding side of the insulating clamp (3). The front and rear ends of the arc-shaped clamping grooves on the inner side of the insulating clamp (3) and the movable insulating clamp (4) are provided with rubber protective sleeves (9) for supporting and protecting the overhead line from turning. The V-shaped conductive support rod (5) has two extended support rods movably connected to conductive locking sleeves (6) sleeved on the conductive grounding support column (1), and the other end of the V-shaped conductive support rod (5) is movably connected to a transition mounting plate (7) for transition support and fixation. The bottom of the conductive grounding support column (1) is threadedly connected to an extension conductive grounding support rod (8) for extending the conductive grounding support column (1).

2. The grounding device for a low-voltage overhead power line in a distribution network according to claim 1, characterized in that: The insulating support (2) has a strip-shaped positioning groove (10) at its end, and the inner side of the strip-shaped positioning groove (10) has a locking rod (11) that is threaded through to the outer side of the insulating support (2).

3. The grounding device for a low-voltage overhead power line in a distribution network according to claim 2, characterized in that: The bottom of the movable insulating clamp (4) is provided with a guide drive block (12) that slides in the strip positioning groove (10), and the guide drive block (12) is threaded through the locking rod (11).

4. The grounding device for a low-voltage overhead power line in a distribution network according to claim 1, characterized in that: The inner side of the movable insulating clamp (4) is provided with a support block (13) that extends to the outside of the insulating clamp (3). The support block (13) is provided with a limiting insertion hole (14) evenly. A limiting insertion rod (15) is inserted into the limiting insertion hole (14) at the outside end of the support block (13) of the insulating clamp (3).

5. A grounding device for a low-voltage overhead power line in a distribution network according to claim 1, characterized in that: The conductive grounding support (1) and the extended conductive grounding support (8) are evenly provided with internal threaded locking holes (16) on one side, which allow the conductive locking sleeve (6) to be fitted and locked with screws. The conductive grounding support (1) is provided with an internal threaded groove (17) at the bottom end, and the extended conductive grounding support (8) is provided with a threaded locking post (18) that locks with the internal threaded groove (17) at one end.

6. The grounding device for a low-voltage overhead power line in a distribution network according to claim 1, characterized in that: The inner side of the V-shaped conductive support rod (5) is provided with a reinforcing vertical rod (19) to strengthen the grounding stability support of the low-voltage overhead line of the V-shaped conductive support rod (5).

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