Drainage connecting device of high-voltage power transmission line

Abstract

The utility model discloses a drainage connecting device of a high-voltage power transmission line, and relates to the technical field of electric power apparatuses. The device comprises two drainage wire clamps, the drainage wire clamps comprise fixing plates, the fixing plates are connected with wire pressing plates, and drainage wires are clamped and fixed through cooperation of the wire pressing plates and the fixing plates; the fixing plate is connected with a bolt, provided with an avoiding groove and hinged to a supporting plate. The supporting plate is provided with a notch in clearance fit with the bolt and connected with a strip-shaped shifting block, the strip-shaped shifting block abuts against the power transmission line wire, the fixing plate moves downwards to enable the supporting plate to rotate, when the power transmission line wire abuts against the lower surface of the supporting plate, the bolt is clamped into the notch, and the supporting plate and the fixing plate are matched by rotating the bolt, so that the power transmission line wire is fixed. The clamp is fixed on a power transmission line conductor. According to the utility model, through cooperation of the wire pressing plate and the fixing plate, a drainage wire is connected, and then through cooperation of the supporting plate and the fixing plate, the drainage wire clamp is clamped and fixed on a power transmission line wire, thereby solving a problem of poor installation convenience of a conventional drainage wire clamp.

Description

Technical Field

[0001] This utility model relates to the field of power equipment technology, specifically to a current-draining connection device for high-voltage transmission lines. Background Technology

[0002] In the power grid, electricity, as an indispensable energy source, is crucial for economic development and the normal operation of society through stable and efficient transmission. High-voltage transmission lines, as key infrastructure for power transmission, bear the important task of transmitting large amounts of electrical energy from the generation end to the consumption end. During operation, it is often necessary to connect branch lines or grounding, i.e., current diversion. Currently, current diversion line connections are typically made using current diversion clamps for live-line work. Current diversion connection devices play a crucial role in high-voltage transmission lines, connecting different line sections and realizing current diversion and convergence; their performance directly affects the safety and reliability of the transmission line.

[0003] Early high-voltage transmission line current-diverting connection devices had relatively simple structures, typically using bolted or welded connections. However, bolted connections suffer from loosening due to vibration and other factors after long-term operation, which can increase contact resistance, causing overheating at the connection point and potentially leading to fires or other safety accidents. While welding provides a more robust connection, it is more difficult to perform on-site and requires high-level welding techniques. Poor welding quality can also affect the reliability of the connection, and the high temperatures generated during welding can damage the performance of the conductors.

[0004] Chinese utility model CN118412672B discloses a cable drain clamp. After the main cable and drain line are placed in the clamping groove of the drain clamp, the piston slides down by a compressed spring. The piston rod drives the slide block to move down, and the slide block drives the plug block to move down to press the main cable and drain line. After the plug block presses the main cable and drain line, the slide block mechanism will self-lock and limit the position.

[0005] In the existing technology, the main line and the drain line are fixed by moving two plugs synchronously with a slide. However, in actual use, because the two plugs move synchronously, the plugs cannot fix the drain line before the main line is fixed. This makes it very easy for the drain line to fall out of the clamp during installation, resulting in poor installation convenience of the drain line clamp.

[0006] Meanwhile, during high-voltage power transmission, conductors are subject to vibration and displacement due to various factors such as wind force and thermal expansion and contraction. If the current-carrying connection device cannot effectively clamp and limit the conductors, they may loosen, affecting the stability and safety of power transmission. This increases engineering costs and construction difficulty.

[0007] To overcome the aforementioned problems in existing technologies, it is urgent to develop a safe, reliable, easy-to-install, stable, and versatile high-voltage transmission line current diversion connection device. This high-voltage transmission line current diversion connection device is designed against this backdrop, aiming to improve the overall performance of the device through optimized structural design and the adoption of new operating methods, thereby meeting the ever-evolving needs of modern high-voltage transmission lines. Utility Model Content

[0008] The purpose of this utility model is to provide a current-diverting connection device for high-voltage transmission lines. By inserting the current-diverting conductor into the limiting groove of the fixing plate and the pressure plate in the current-diverting clamp and locking it with fixing bolts to connect the two current-diverting clamps, the strip-shaped lever of the support plate is placed on the transmission line conductor to rotate the support plate until the bolt is inserted into the groove. After locking with bolts, the transmission line conductor is clamped by the cooperation of the upper and lower arc grooves. This solves the problem of poor installation convenience of existing current-diverting clamps.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A current-draining connection device for a high-voltage transmission line, characterized in that it includes a pair of current-draining clamps.

[0011] The drainage clamp includes a fixing plate, which is the basic support component of the drainage clamp and provides a stable platform for the installation and fixation of other components. A pressure plate is pressed onto the fixing plate. The pressure plate works in conjunction with the fixing plate to firmly fix the drainage wire between them, ensuring a tight and stable connection and preventing the drainage wire from loosening or shifting during transmission.

[0012] A support plate is rotatably hinged to the side of the fixed plate. The support plate can rotate around the hinge point with the fixed plate, allowing for flexible adjustment of the support plate according to actual needs during use. A strip-shaped lever is fixedly connected to the rotatable hinge end of the support plate, with the lever and support plate at a fixed angle. The fixed plate has a clearance groove that mates with the lever, providing space for the lever's rotation while ensuring no interference between the support plate and the fixed plate during rotation, thus ensuring the normal operation of the entire device.

[0013] The fixing plate has a threaded through hole next to the pressure plate, and a bolt is threadedly connected to it. The bolt engages with the threaded through hole on the fixing plate through its threads, enabling the fixing and adjustment of the support plate. The support plate has a slot that fits the bolt with a clearance fit. The size of the slot matches the diameter of the bolt thread. This design allows the bolt to pass through the slot on the support plate, and when the bolt is tightened, it can firmly fix the support plate in the desired position.

[0014] A limiting groove is provided between the fixing plate and the pressure plate. The shape and size of the limiting groove are designed according to the specifications of the lead wire. The limiting groove clamps and limits the lead wire, which ensures that the lead wire remains in a fixed position between the fixing plate and the pressure plate, thereby improving the reliability and stability of the connection.

[0015] The lower surface of the fixing plate has an upper arc-shaped groove, and the support plate has a corresponding lower arc-shaped groove. The shapes of the upper and lower arc-shaped grooves are designed according to the shape of the power transmission line conductor, and are used to clamp and limit the power transmission line conductor by the cooperation of the upper and lower arc-shaped grooves. When the support plate is in contact with the fixing plate, the upper and lower arc-shaped grooves can closely fit the surface of the power transmission line conductor, firmly fixing the power transmission line conductor in the device, ensuring the stability and safety of the power transmission line conductor during transmission.

[0016] It also includes a first linker, the upper end of which is fixedly connected to a stud. The stud is a key component for connecting the first linker to the drain clamp. The lower surface of the fixing plate has a threaded connection hole that mates with the stud, for connecting the stud to the threaded connection hole, and the drain clamp can be adjusted in position by holding the first linker.

[0017] It also includes a second linker, which is also an insulated operating tool. The upper end of the second linker is fixedly connected to a sleeve that mates with the bolt. The sleeve's size matches the bolt, allowing it to fit snugly onto it. It is used to tighten or loosen the bolt by hand using the second linker. When installing or removing drain clamps, operators can use the second linker to easily tighten or loosen the bolt through the sleeve's engagement with the bolt. Due to the second linker's insulating properties, it effectively prevents electric shock accidents during operation.

[0018] The device has two threaded through holes, which are symmetrically arranged opposite the clearance groove. The two threaded through holes, symmetrically distributed, ensure greater stability and balance during mounting, avoiding uneven stress that might occur with a single bolt, and further improving the reliability and stability of the entire drainage connection device.

[0019] When this high-voltage transmission line current-diverting connection device is in operation, the current-diverting conductor is first inserted into the limiting groove between the fixing plate and the pressure plate of the two current-diverting clamps. The limiting groove has an arc-shaped cross-section and is locked with fixing bolts, so that the pressure plate and the fixing plate firmly clamp the current-diverting conductor, realizing the connection between the two current-diverting clamps through the current-diverting conductor and preventing the current-diverting conductor from falling off during subsequent installation. When installing the current-diverting clamp, the stud at the upper end of the first linker is connected to the threaded connection hole on the lower surface of the fixing plate, and the current-diverting clamp is lifted to the installation position, and its position is adjusted by holding the first linker. Next, the strip-shaped lever on the support plate is placed against the transmission line conductor. The first linker moves the fixing plate down. Because the strip-shaped lever is blocked by the transmission line conductor, the support plate rotates around the connecting shaft with the fixing plate. When the transmission line conductor touches the lower surface of the support plate, the support plate rotates to the position where the bolt is inserted into the groove of the support plate. At this point, using the second linker, place its upper sleeve onto the bolt head, rotate the bolt to move it upwards, and the bolt head presses against the support plate. When the bolt is tightened, the support plate and the fixing plate cooperate, and the upper arc groove on the lower surface of the fixing plate and the lower arc groove on the support plate tightly clamp the power transmission line, thus fixing the power transmission line to the drain clamp. Finally, remove the second linker, rotate the first linker in the opposite direction to disengage the stud from the threaded connection hole, and remove the first linker. The entire process, using the first and second linkers, allows installation to be completed away from the power transmission line or on the ground, ensuring both safety and improving installation convenience.

[0020] Compared with the prior art, the beneficial effects of this utility model are:

[0021] The guide wire is clamped and limited by the limiting groove between the fixing plate and the pressure plate, and connected with fixing bolts. This effectively prevents the guide wire from falling off during subsequent installation, ensuring the stability of the connection between the guide wire and the guide wire clamp, and thus ensuring the reliability of power transmission.

[0022] The drain wire is first connected by the clamping plate and the fixing plate, so that the two drain wire clamps are connected by the drain wire, which prevents the drain wire from falling off during the installation process. Then, the transmission line wire is clamped by the support plate and the fixing plate, so that the two drain wire clamps are fixed on the transmission line wire, thus realizing the installation of the drain wire clamps and effectively improving the overall installation convenience.

[0023] The use of insulated first and second linkers allows operators to install and secure the drain clamp from a safe distance, reducing the risk of electric shock and greatly protecting the personal safety of operators.

[0024] The upper arc-shaped groove on the lower surface of the fixing plate and the lower arc-shaped groove of the support plate cooperate to clamp and limit the transmission line. Compared with the single-structure clamping method, this design can better fit the shape of the transmission line, improve the clamping and fixing effect of the transmission line, and enhance the stability of the connection between the device and the transmission line.

[0025] The tray and the fixed plate are connected by a rotating hinge, and are provided with a clearance groove that cooperates with the strip-shaped lever and a slot that cooperates with the bolt. This structural design allows the tray to rotate and be fixed flexibly during installation, which facilitates the installation of power transmission line conductors. At the same time, the two symmetrically arranged threaded through holes cooperate with the bolt to ensure the stability and balance of the tray fixation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a current diversion connection device for a high-voltage transmission line according to the present invention;

[0027] Figure 2 This is a schematic diagram of the structure after the drain clamp is connected to the power transmission line conductor;

[0028] Figure 3 for Figure 2 A structural diagram viewed from below;

[0029] Figure 4 This is a schematic diagram of the drainage clamp structure;

[0030] Figure 5 for Figure 4 A structural diagram viewed from below;

[0031] Figure 6 This is a structural diagram of the drain clamp before installation;

[0032] Figure 7 for Figure 6 A schematic diagram of the structure when the conductor of the medium-voltage transmission line abuts against the lower surface of the fixing plate;

[0033] Figure 8 for Figure 7 A schematic diagram of the structure of the middle support plate and the fixing plate clamping the power transmission line conductor;

[0034] Figure 9 This is a schematic diagram of the structure of the second linker;

[0035] The attached diagram lists the components represented by each number as follows:

[0036] 1-Drainage clamp, 2-Bolt, 3-Support plate, 4-First linker, 5-Second linker, 6-Drainage conductor, 7-Transmission line conductor, 11-Fixing plate, 12-Crimping plate, 101-Allowing groove, 102-Limiting groove, 103-Upper arc groove, 301-Gate opening, 302-Strip-shaped lever, 303-Lower arc groove, 401-Stud, 501-Sleeve. Detailed Implementation

[0037] The technical solutions of the present utility model will be fully described below with reference to the accompanying drawings. 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 scope of protection of the present utility model.

[0038] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around" and other terms indicating orientation or positional relationship are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Please see Figures 1-3 As shown, this utility model is a current-diverting connection device for a high-voltage transmission line, including two current-diverting clamps 1. Each current-diverting clamp 1 includes a fixing plate 11, and a pressure plate 12 is connected to the upper surface of the fixing plate 11 by four fixing bolts.

[0040] like Figure 4 and 5 As shown, both the upper surface of the fixing plate 11 and the lower surface of the pressure plate 12 have limiting grooves 102. The limiting grooves 102 have an arc-shaped cross-section and are used to clamp and limit the drain wire. Before installing the drain wire clamp 1, the drain wire 6 is inserted into the limiting groove 102 between the fixing plate 11 and the pressure plate 12. Then, by tightening the fixing bolts, the pressure plate 12 and the fixing plate 11 are used to clamp and fix the drain wire 6, so that the two drain wire clamps 1 are connected by the drain wire 6, thereby preventing the drain wire 6 from falling off during subsequent installation.

[0041] The fixing plate 11 has a threaded through hole and is threadedly connected to a bolt 2. The fixing plate 11 also has a clearance groove 101 and a hinged support plate 3. Specifically, one side of the fixing plate 11 has a connecting slot communicating with the clearance groove 101, and the side of the connecting slot has a connecting hole. One end of the support plate 3 is inserted into the connecting slot and connected by a rotating shaft, so that the support plate 3 and the fixing plate 11 are rotatably connected.

[0042] Meanwhile, the clearance groove 101 is located in the middle of the support plate 3, and there are two threaded through holes. The two threaded through holes are symmetrically arranged opposite to the clearance groove 101, and each threaded through hole is connected to a bolt 2. The support plate 3 has a slot 301 that is clearance-fitted with the bolt 2, and a strip-shaped lever 302 that is clearance-fitted with the clearance groove 101 is fixedly connected.

[0043] like Figure 6 and 9 As shown, it also includes a first linker 4 and a second linker 5. The upper end of the second linker 5 is fixedly connected to a sleeve 501 that mates with the bolt 2, which is used to tighten the bolt 2 by holding the second linker 5.

[0044] A stud 401 is fixedly connected to the upper end of the first link 4. A threaded connection hole 104 that mates with the stud 401 is provided on the lower surface of the fixing plate 11. The stud 401 is connected to the threaded connection hole 104 to fix the drainage clamp 1 to the upper end of the first link 4. The drainage clamp 1 is lifted to the required installation position by the first link 4, and the installation position of the drainage clamp 1 is adjusted by holding the first link 4. Furthermore, when the support plate 3 hangs freely, the strip-shaped lever 302 is located on the lower surface of the fixing plate 11.

[0045] like Figure 7 As shown, the strip-shaped lever 302 is placed against the power transmission line 7, and the fixing plate 11 is moved down by the first linker 4. Since the strip-shaped lever 302 is blocked by the power transmission line 7 and cannot move down, the support plate 3 rotates. When the power transmission line abuts against the lower surface of the support plate 3, the support plate 3 rotates until the bolt 2 is engaged in the slot 301.

[0046] At this time, hold the second linker 5 and put the sleeve 501 at its upper end on the head of the bolt 2. Rotate the bolt 2 by the second linker 5 so that the bolt 2 moves upward and the head presses the support plate 3 upward.

[0047] like Figure 1 and 8 As shown, the fixing plate 11 and the pressure plate 12 are fixed together by bolts. When the bolt 2 is tightened, the support plate 3 and the fixing plate 11 cooperate to clamp the power transmission line 7, thereby fixing the drain clamp 1 onto the power transmission line 7. The fixing plate 11 has an upper arc-shaped groove 103 on its lower surface, and the support plate 3 has a lower arc-shaped groove 303 corresponding to the arc-shaped groove 103. The upper arc-shaped groove 103 and the lower arc-shaped groove 303 cooperate to clamp and limit the power transmission line 7, improving the clamping and fixing effect of the power transmission line 7.

[0048] After fixing, remove the second linker 5 and rotate the first linker 4 in the opposite direction to remove the stud 401 from the threaded connection hole 104, thereby removing the first linker 4. Using the first linker 4 and the second linker 5, the drain clamp 1 can be installed without having to be near the power transmission line 7, or even on the ground, thus ensuring safety and greatly improving overall installation convenience.

[0049] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A current-diverting connection device for a high-voltage transmission line, characterized in that, The device includes a pair of drain wire clamps (1), each drain wire clamp (1) having a fixing plate (11) with a pressure plate (12) on the fixing plate (11); a support plate (3) is rotatably hinged to the side of the fixing plate (11), and a strip-shaped lever (302) is fixedly connected to the hinged end of the support plate (3), with the strip-shaped lever (302) and the support plate (3) having a fixed angle between them; the fixing plate (11) has a clearance groove (101) that cooperates with the strip-shaped lever (302); the fixing plate (11) has a threaded through hole next to the pressure plate (12) and a bolt (2) is threadedly connected to it; the support plate (3) has a slot (301) that cooperates with the bolt (2) with a clearance, and the size of the slot (301) is matched with the diameter of the bolt (2).

2. The current-diverting connection device for a high-voltage transmission line according to claim 1, characterized in that, A limiting groove (102) is provided between the fixing plate (11) and the pressure plate (12), and the limiting groove (102) clamps and limits the flow wire (6).

3. The current-diverting connection device for a high-voltage transmission line according to claim 1, characterized in that, The lower surface of the fixing plate (11) is provided with an upper arc groove (103), and the support plate (3) is provided with a lower arc groove (303) corresponding to the arc groove (103). The upper arc groove (103) and the lower arc groove (303) are used to clamp and limit the transmission line conductor (7) through the cooperation of the upper arc groove (103) and the lower arc groove (303).

4. The current-diverting connection device for a high-voltage transmission line according to claim 1, characterized in that, It also includes a first linker (4), the upper end of which is fixedly connected to a stud (401). The lower surface of the fixing plate (11) is provided with a threaded connection hole (104) that mates with the stud (401), which is used to connect the stud (401) to the threaded connection hole (104). The installation position of the drain clamp (1) is adjusted by holding the first linker (4).

5. A current-diverting connection device for a high-voltage transmission line according to claim 1 or 4, characterized in that, It also includes a second linker (5), the upper end of which is fixedly connected to a sleeve (501) that cooperates with the bolt (2), for tightening the bolt (2) by holding the second linker (5).

6. The current-diverting connection device for a high-voltage transmission line according to claim 1, characterized in that, The number of threaded through holes is two, and the two threaded through holes are symmetrically arranged relative to the relief groove (101).

7. The current-diverting connection device for a high-voltage transmission line according to claim 1, characterized in that, The fixing plate (11) and the pressure plate (12) are fixed together by bolts.

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