A transmission line tower grounding structure

Abstract

This invention discloses a grounding structure for transmission line towers, including a tower body and a grounding assembly. The grounding assembly includes a sleeve, with multiple positioning blocks movably inserted into the sleeve's body. An internal baffle is provided within the sleeve, and a fixed sleeve is located at the center of the baffle. A movable block is movably fitted within the fixed sleeve, and a polymer fiber rope connects the movable block and the positioning blocks. A screw is threadedly connected to the center of the movable block. A blind hole is located at the center of the lower end of the tower body, and multiple positioning grooves corresponding to the positioning blocks are provided on the lower outer wall of the tower body. A through groove connecting the positioning grooves and the blind hole is provided on the lower end face of the tower body. This invention enables rapid assembly of the tower and grounding assembly, can fix towers of different specifications, is convenient to install, and provides a stable connection. It effectively prevents the tower body from loosening or shifting during operation, improves on-site construction efficiency, and extends the service life of the grounding device. It is particularly suitable for humid, saline-alkali, or highly corrosive environments.

Description

Technical Field

[0001] This invention relates to the field of power transmission tower technology, specifically to a grounding structure for power transmission line towers. Background Technology

[0002] Transmission line towers, as crucial support and conduction structures in power systems, directly impact the reliability of the entire power grid through their safe and stable operation. Among these, the tower grounding system is a key component ensuring the lightning protection performance and operational safety of the lines. Proper grounding not only effectively discharges lightning current and reduces damage to equipment and lines from lightning overvoltages, but also provides a low-impedance path during short-circuit faults, ensuring rapid operation of relay protection devices and thus enhancing system safety.

[0003] Currently, traditional grounding methods for transmission line towers mostly involve welding or bolting to fix the grounding down conductor to the bottom of the tower, and achieving electrical connection with the earth by burying grounding electrodes (such as angle steel, round steel, or copper stranded wire). However, this type of structure has many shortcomings: on the one hand, on-site welding or bolting is complex and inefficient, and is susceptible to environmental factors (such as rain, salt spray, and high humidity), leading to corrosion at the connection points and increased contact resistance, thus weakening the grounding effect; on the other hand, existing grounding structures are mostly rigidly fixed, lacking effective mechanical locking and adaptive adjustment mechanisms, which can easily cause loosening of the connection due to soil settlement, wind vibration, or thermal expansion and contraction during long-term operation, affecting electrical continuity and structural stability. Furthermore, while some improved grounding devices have introduced plug-in structures to simplify installation, they often lack reliable positioning and locking mechanisms, making it difficult to ensure a tight fit between the pole and the grounding components. They also lack sealing protection capabilities, making them susceptible to external environmental corrosion. Simultaneously, the limited conductivity of traditional materials makes it difficult to meet the stringent requirements for low grounding resistance in areas with high lightning activity or high soil resistivity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the existing defects and provide a grounding structure for transmission line towers, which can quickly assemble towers and grounding components, fix towers of different specifications, facilitate installation and ensure stable connection, effectively prevent the tower from loosening or shifting during operation, improve on-site construction efficiency, extend the service life of grounding devices, and is particularly suitable for humid, saline or highly corrosive environments, and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a grounding structure for a transmission line tower, comprising a pole body and a grounding assembly; the grounding assembly includes a sleeve, with multiple positioning blocks movably inserted into the sleeve body, a baffle provided inside the sleeve, a fixed sleeve provided at the center of the baffle, a movable block movably adapted inside the fixed sleeve, a polymer fiber rope connecting the movable block and the positioning block, one end of the polymer fiber rope being connected to the positioning block, and the other end of the polymer fiber rope passing around the upper end of the fixed sleeve and extending into the fixed sleeve to connect with the movable block, a screw threadedly connected to the center of the movable block; a blind hole is provided at the center of the lower end of the pole body, multiple positioning grooves corresponding to the positioning blocks are provided on the lower outer wall of the pole body, and a through groove connecting the positioning grooves and the blind hole is provided on the lower end face of the pole body.

[0006] Preferably, when the rod is inserted into the sleeve, the blind hole of the rod contacts the screw and causes the screw to move downward. When the screw moves downward, it drives the movable block to move downward in the fixed sleeve. The movable block pulls the positioning block into the positioning groove through the polymer fiber rope and abuts against the rod.

[0007] Preferably, when the rod is inserted into the sleeve and the movable block abuts against the rod, cement is injected into the area between the sleeve and the rod to seal it.

[0008] Preferably, four of each of the positioning blocks, positioning grooves, through grooves, and polymer fiber ropes are provided.

[0009] Preferably, the sleeve body is provided with a through hole that matches the positioning block.

[0010] Preferably, the upper end of the screw is also provided with a spring, which abuts against the bottom of the blind hole.

[0011] Preferably, the lower end of the sleeve is threaded with a tapered head.

[0012] Preferably, the upper end of the fixing sleeve is provided with multiple arc-shaped grooves for polymer fiber ropes to pass through.

[0013] Preferably, the sleeve is made of highly conductive copper material, and the sleeve is connected to a conductive connector via an armored cable.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: By setting blind holes, positioning grooves and through grooves at the lower end of the pole body, and cooperating with the linkage mechanism composed of movable blocks, polymer fiber ropes and positioning blocks inside the sleeve, when the pole body is inserted into the sleeve, the screw is pushed down by the bottom of the blind hole, which drives the movable blocks to move down synchronously. Thus, the polymer fiber rope automatically pulls multiple positioning blocks into the positioning grooves of the pole body to achieve mechanical locking. Quick assembly can be completed without additional tools, and the connection is stable, effectively preventing the pole body from loosening or shifting during operation. It is convenient to install, reliable in connection, and can fix poles of different specifications. After the pole body and sleeve are assembled, cement can be injected into the gap between them for sealing. This not only enhances the mechanical strength of the overall structure, but also effectively isolates external moisture and corrosive media from intrusion, extends the service life of the grounding device, and has good structural sealing and high durability. It is particularly suitable for humid, saline or highly corrosive environments. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 for Figure 2 A magnified schematic diagram of a local structure; Figure 4 This is a schematic diagram of the rod structure of the present invention; Figure 5 This is a schematic diagram of the grounding component structure of the present invention.

[0016] In the picture: 1. Rod body; 1.1. Positioning groove; 1.2. Through groove; 1.3. Blind hole; 2. Grounding assembly, 2.1 Sleeve, 2.2 Positioning block, 2.3 Conical head, 2.4 Baffle, 2.5 Movable block, 2.6 Polymer fiber rope, 2.7 Screw, 2.8 Fixing sleeve. Detailed Implementation

[0017] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if there are terms such as "upper", "lower", "front", "rear", "left", "right" indicating the orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation.

[0018] Please see Figure 1-5 The present invention provides the following technical solutions: Example 1: A grounding structure for a transmission line tower, comprising a pole body 1 and a grounding assembly 2; the grounding assembly 2 includes a sleeve 2.1, with multiple positioning blocks 2.2 movably inserted into the sleeve 2.1, and through holes adapted to the positioning blocks 2.2 in the sleeve 2.1; a baffle 2.4 is provided inside the sleeve 2.1, and a fixed sleeve 2.8 is provided at the center of the baffle 2.4; a movable block 2.5 is movably adapted inside the fixed sleeve 2.8; a polymer fiber rope 2.6 connects the movable block 2.5 and the positioning blocks 2.2; one end of the polymer fiber rope 2.6... Connected to positioning block 2.2, the other end of polymer fiber rope 2.6 passes over the upper end of fixed sleeve 2.8 and extends into fixed sleeve 2.8 to connect with movable block 2.5. The upper end of fixed sleeve 2.8 is provided with multiple arc-shaped grooves for polymer fiber rope 2.6 to pass through. The center of movable block 2.5 is threaded with screw rod 2.7. The lower end of rod body 1 is provided with blind hole 1.3. The lower outer wall of rod body 1 is provided with multiple positioning grooves 1.1 corresponding to positioning block 2.2. The lower end face of rod body 1 is provided with through groove 1.2 connecting positioning groove 1.1 and blind hole 1.3. When rod 1 is inserted into sleeve 2.1, the blind hole 1.3 of rod 1 contacts screw 2.7 and causes screw 2.7 to move down. When screw 2.7 moves down, it drives movable block 2.5 to move down in fixed sleeve 2.8. Movable block 2.5 pulls positioning block 2.2 into positioning groove 1.1 through polymer fiber rope 2.6 and abuts against rod 1. By setting a blind hole 1.3, a positioning groove 1.1, and a through groove 1.2 at the lower end of the rod body 1, and cooperating with the linkage mechanism consisting of the movable block 2.5, the polymer fiber rope 2.6, and the positioning block 2.2 inside the sleeve 2.1, when the rod body 1 is inserted into the sleeve 2.1, the screw 2.7 is pushed down by the bottom of the blind hole 1.3, which drives the movable block 2.5 to move down synchronously. Thus, the polymer fiber rope 2.6 automatically pulls multiple positioning blocks 2.2 into the positioning groove 1.1 of the rod body 1 to achieve mechanical locking. This structure can be quickly assembled without additional tools, and the connection is stable, effectively preventing the rod body from loosening or shifting during operation. It should be noted that the center thread of the movable block 2.5 is connected to the screw 2.7, and the position of the screw 2.7 can be adjusted to adjust the downward movement of the movable block 2.5 and the radial movement of the positioning block 2.2. This can be adapted to different specifications of the rod 1 to increase the range of applications. Specifically, four positioning blocks 2.2, four positioning grooves 1.1, four through grooves 1.2, and four polymer fiber ropes 2.6 are provided. The structure of the four symmetrically arranged positioning blocks 2.2 and positioning grooves 1.1 ensures the centering and uniform force distribution during the installation process, thereby improving on-site construction efficiency and installation accuracy.

[0019] Example 2: Unlike Example 1, when the rod 1 is inserted into the sleeve 2.1 and the movable block 2.5 abuts against the rod 1, cement is injected into the area between the sleeve 2.1 and the rod 1 for sealing. After the rod 1 and the sleeve 2.1 are assembled, cement can be injected into the gap between them for sealing. This not only enhances the mechanical strength of the overall structure, but also effectively isolates external moisture and corrosive media from intrusion, and extends the service life of the grounding device. It is especially suitable for humid, saline-alkali or highly corrosive environments.

[0020] Example 3: Unlike Example 1, the upper end of the screw 2.7 is also provided with a spring. The spring abuts against the bottom of the blind hole 1.3. By setting the spring, a buffer distance is reserved to avoid the problem that the positioning block 2.2 and the positioning groove 1.1 of 1 will be over-positioned when the blind hole 1.3 moves down against the screw 2.7, which would cause the polymer fiber rope 2.6 to break, thus ensuring safe use.

[0021] Example 4: Unlike Example 1, the lower end of the sleeve 2.1 is threaded with a tapered head 2.3, which makes it easy to drive directly into the soil to achieve rapid grounding.

[0022] Example 5: Unlike Example 1, sleeve 2.1 is made of highly conductive copper material. Sleeve 2.1 is connected to the conductive connector through armored cable, which ensures a good conductive path, significantly reduces grounding resistance, improves lightning current discharge capability, and enhances the lightning protection safety and system stability of transmission lines.

[0023] The parts of this invention not described in detail are prior art. It will be apparent to those skilled in the art that this invention is not limited to the details of the above exemplary embodiments, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and are intended to encompass all changes that fall within the meaning and scope of equivalents in the content of this invention.

Claims

1. A grounding structure for transmission line towers, characterized in that: The device includes a rod body (1) and a grounding assembly (2); the grounding assembly (2) includes a sleeve (2.1), the sleeve (2.1) has multiple positioning blocks (2.2) movably inserted into its body, a baffle (2.4) is provided inside the sleeve (2.1), a fixed sleeve (2.8) is provided at the center of the baffle (2.4), a movable block (2.5) is movably adapted inside the fixed sleeve (2.8), a polymer fiber rope (2.6) is connected between the movable block (2.5) and the positioning block (2.2), and one end of the polymer fiber rope (2.6) is connected to the positioning block (2.2). 2) Connection: The other end of the polymer fiber rope (2.6) passes over the upper end of the fixed sleeve (2.8) and extends into the fixed sleeve (2.8) to connect with the movable block (2.5). The center of the movable block (2.5) is threaded with a screw (2.7). The lower end of the rod (1) is provided with a blind hole (1.3). The lower outer wall of the rod (1) is provided with multiple positioning grooves (1.1) corresponding to the positioning block (2.2). The lower end face of the rod (1) is provided with a through groove (1.2) connecting the positioning groove (1.1) and the blind hole (1.3).

2. The grounding structure for a transmission line tower according to claim 1, characterized in that: When the rod (1) is inserted into the sleeve (2.1), the blind hole (1.3) of the rod (1) contacts the screw (2.7) and causes the screw (2.7) to move down. When the screw (2.7) moves down, it drives the movable block (2.5) to move down in the fixed sleeve (2.8). The movable block (2.5) pulls the positioning block (2.2) into the positioning groove (1.1) through the polymer fiber rope (2.6) and abuts against the rod (1).

3. The grounding structure for a transmission line tower according to claim 2, characterized in that: When the rod (1) is inserted into the sleeve (2.1) and the movable block (2.5) abuts against the rod (1), cement is injected into the area between the sleeve (2.1) and the rod (1) to seal it.

4. The grounding structure for a transmission line tower according to claim 1, characterized in that: The positioning block (2.2), positioning groove (1.1), through groove (1.2), and polymer fiber rope (2.6) are each provided in four parts.

5. A grounding structure for transmission line towers according to claim 1, characterized in that: The sleeve (2.1) has a through hole that is adapted to the positioning block (2.2).

6. The grounding structure for a transmission line tower according to claim 1, characterized in that: The upper end of the screw (2.7) is also provided with a spring, which abuts against the bottom of the blind hole (1.3).

7. A grounding structure for transmission line towers according to claim 1, characterized in that: The lower end of the sleeve (2.1) is threaded with a tapered head (2.3).

8. A grounding structure for transmission line towers according to claim 1, characterized in that: The upper end of the fixing sleeve (2.8) is provided with multiple arc-shaped grooves for the polymer fiber rope (2.6) to pass through.

9. A grounding structure for transmission line towers according to claim 1, characterized in that: The sleeve (2.1) is made of highly conductive copper material, and the sleeve (2.1) is connected to a conductive connector via an armored cable.

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