Ground wire hanging point connection method capable of dynamically adjusting unbalanced tension of overhead ground wire

Abstract

The invention discloses a ground wire hanging point connection method capable of flexibly adjusting the unbalanced tension of an overhead ground wire, and solves the problem of how to effectively avoid the breakage of a connecting hardware of the ground wire due to the tilting and deflection of a tower. The invention belongs to the field of power transmission, and comprises a ground wire hanging bracket at the top of a power transmission tower, a ground wire (10) and a fan-shaped hanging plate (2). A top hanging hole (3) is provided at the intersection of two straight sides of the fan-shaped hanging plate, and a long arc-shaped through hole (6) is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate. An upper hardware (1) is hung on the ground wire hanging bracket, and the lower end of the upper hardware is hung together with the top hanging hole on the fan-shaped hanging plate. A first shaft sleeve (7) is movably provided in the long arc-shaped through hole. The upper end of the lower hardware (8) is connected to the shaft sleeve through a pin shaft. A ground wire clamp (9) is connected to the lower end of the lower hardware, and the ground wire is provided in the ground wire clamp. The invention ensures the safe and stable operation of the power transmission line.

Description

Technical Field

[0001] The invention relates to a transmission tower on a high-voltage transmission line, and in particular to a ground wire hanging point connection mechanism and a connection method thereof which can effectively resist the tilting of the transmission tower. Background Art

[0002] Some power transmission channels inevitably pass through coal mine goafs, where transmission towers are installed on the ground. For the foundations of transmission towers on the ground in goafs, preventative measures such as large slab foundations and extended anchor bolts are generally implemented. These preventative measures allow for moderate tilt and retraction of the transmission towers. However, the ground wire hanging points on the towers do not adaptively adjust with the tilt of the towers. Because the ground wire is thin and the hardware is limited in strength, tilting the towers can lead to hardware breakage, wire drop, and insulation string loss. To address this, the conventional practice is to manually adjust the ground wire clamps and release the tension at the hanging points when a tower tilt is detected. This prevents the hanging points from being bent or pulled by the tower tilt, preventing deformation of the tower head caused by the ground wire. This also prevents the hardware from being broken when the ground wire is suddenly stressed. Summary of the Invention

[0003] The present invention provides a ground wire hanging point connection method that can dynamically adjust the unbalanced tension of the overhead ground wire, solving the technical problem of how to effectively avoid the occurrence of critical situations such as breakage of the ground wire connection hardware due to the tilting and deflection of the tower, and even deformation of the tower head.

[0004] The present invention solves the above technical problems through the following technical solutions:

[0005] The overall concept of the present invention is as follows: a fan-shaped hanging plate is made, hanging holes are set at equal intervals on the two straight sides of the fan-shaped hanging plate, a top hanging hole is set on the fan-shaped hanging plate at the vertex where the two straight sides intersect, and a long arc-shaped through hole is set on the inner side of the circular arc side of the fan-shaped hanging plate; an upper hardware is first hung on the ground wire hanging bracket at the top of the tower, and the lower end of the upper hardware is hung together with the top hanging hole on the fan-shaped hanging plate; the upper end of the lower hardware is movably hung in the long arc-shaped through hole, and the lower end of the lower hardware is connected to the wire clamp connected to the ground wire; when the ground settles, the tower tilts moderately When the tower is tilted, the ground wire hanging bracket at the top of the tower will also move along with the tilt of the tower. At this time, the upper end of the lower hardware will move along the arc in the long arc-shaped through-hole on the fan-shaped hanging plate, thereby achieving the effect of timely reducing or even offsetting the unbalanced tension on the ground wire caused by the tilt of the tower. That is, the ground wire is connected to the hanging point on the lower hardware, and the follow-up change and adjustment in the long arc-shaped through-hole on the fan-shaped hanging plate can absorb the unbalanced tension, which can timely avoid the phenomenon of the hardware being pulled apart and other critical situations when the ground wire is suddenly subjected to force.

[0006] A ground wire hanging point connection mechanism that can effectively resist the inclination of a transmission tower comprises a ground wire hanging bracket at the top of the transmission tower, a ground wire and a fan-shaped hanging plate, wherein a top hanging hole is provided at the intersection of two straight sides of the fan-shaped hanging plate, and a long arc-shaped through hole is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate; an upper hardware is hung on the ground wire hanging bracket, the lower end of the upper hardware is hung together with the top hanging hole on the fan-shaped hanging plate, a first shaft sleeve is movably provided in the long arc-shaped through hole, the upper end of the lower hardware is connected to the first shaft sleeve through a pin shaft, a ground wire clamp is connected to the lower end of the lower hardware, and the ground wire clamp is provided with the ground wire.

[0007] On the inner side of the left straight side of the fan-shaped hanging plate, left adjustment hanging holes are evenly arranged along the straight side direction; on the inner side of the right straight side of the fan-shaped hanging plate, right adjustment hanging holes are evenly arranged along the straight side direction.

[0008] The first sleeve is a bearing, and two parallel ridges are provided on the outer ring of the bearing. The bearing is movably connected to the long arc-shaped through hole through the two ridges. A pin shaft connected to the hardware below is passed through the inner ring of the bearing.

[0009] A ground wire hanging point connection mechanism that can effectively resist the tilt of a transmission tower comprises a ground wire hanging bracket at the top of the transmission tower, a ground wire, a fan-shaped hanging plate and a second fan-shaped hanging plate. The structure of the fan-shaped hanging plate is exactly the same as that of the second fan-shaped hanging plate. A top hanging hole is provided at the intersection of two straight sides of the fan-shaped hanging plate, and a long arc-shaped through hole is provided on the inner side of the arc side of the fan-shaped hanging plate. An upper hardware is hung on the ground wire hanging bracket, and the lower end of the upper hardware is hung together with the top hanging hole on the fan-shaped hanging plate. A first shaft sleeve is movably provided in the arc-shaped through hole, the upper end of the middle hardware is connected to the first shaft sleeve through a pin shaft, and the lower end of the middle hardware is connected to the top hanging hole on the second fan-shaped hanging plate. A second shaft sleeve is movably provided in the long arc-shaped through hole of the second fan-shaped hanging plate, the upper end of the lower hardware is connected to the second shaft sleeve through a second pin shaft, and a ground wire clamp is connected to the lower end of the lower hardware, and a ground wire is arranged in the ground wire clamp; the fan-shaped hanging plate and the second fan-shaped hanging plate are arranged perpendicular to each other.

[0010] A ground wire hanging point connection method capable of dynamically adjusting the unbalanced tension of an overhead ground wire comprises a ground wire hanging bracket at the top of a transmission tower, a ground wire, and a fan-shaped hanging plate. A top hanging hole is provided at the intersection of two straight sides of the fan-shaped hanging plate. A long arc-shaped through hole is provided inside the arcuate side of the fan-shaped hanging plate. Left adjustment hanging holes are provided at equal intervals along the direction of the straight side on the inside of the left straight side of the fan-shaped hanging plate; right adjustment hanging holes are provided at equal intervals along the direction of the straight side on the inside of the right straight side of the fan-shaped hanging plate. The method is characterized by the following steps:

[0011] Step 1: Hang the upper hardware on the ground wire hanging bracket, and hang the fan-shaped hanging plate on the lower end of the upper hardware through the top hanging hole; movably set the first shaft sleeve in the long arc-shaped through hole, and connect the upper end of the lower hardware to the first shaft sleeve through the pin; set the ground wire in the ground wire clamp, and connect the lower end of the lower hardware to the ground wire clamp;

[0012] In the second step, when the ground wire hanging bracket tilts to the left due to ground settlement, the first sleeve also moves to the left along the long arc-shaped through hole, so that the fan-shaped hanging plate moves with the tilt of the tower, while the hardware below and the ground wire clamp connected to it remain basically stationary.

[0013] Step 3: After the ground settlement stabilizes, remove the fan-shaped hanging plate according to the distance between the lower hanging point of the upper hardware and the upper hanging point of the lower hardware. After setting the fan-shaped hanging plate vertically, hang the lower end of the upper hardware in the right adjustment hanging hole and the upper end of the lower hardware in the left adjustment hanging hole.

[0014] The present invention can automatically balance the uneven horizontal tension of the ground wire within a certain range of tower inclination, and can intuitively reflect the degree of tower inclination, greatly reducing the occurrence of critical defects such as tower head deformation and hardware breakage, thereby ensuring the safe and stable operation of the transmission line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention;

[0016] Figure 2 It is a structural schematic diagram of the fan-shaped hanging plate 2 of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the present invention when the tower is tilted;

[0018] Figure 4 This is a schematic diagram of the structure of the present invention after the tower is tilted and the tilting condition is stabilized;

[0019] Figure 5 It is a schematic structural diagram of the present invention in response to the situation where the tower tilts left and right or front and back. Implementation Method

[0020] The present invention is described in detail below with reference to the accompanying drawings:

[0021] A ground wire hanging point connection mechanism that can effectively resist the tilt of a transmission tower, comprising a ground wire hanging bracket at the top of the transmission tower, a ground wire 10 and a fan-shaped hanging plate 2, wherein a top hanging hole 3 is provided at the intersection of two straight sides of the fan-shaped hanging plate 2, and a long arc-shaped through hole 6 is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate 2; an upper hardware 1 is hung on the ground wire hanging bracket, and the lower end of the upper hardware 1 is hung together with the top hanging hole 3 on the fan-shaped hanging plate 2, and a first shaft sleeve 7 is movably provided in the long arc-shaped through hole 6, and the upper end of the lower hardware 8 is connected to the first shaft sleeve 7 through a pin shaft, and the lower end of the lower hardware 8 is connected to the first shaft sleeve 7 through a pin shaft. The end is connected to a ground wire clamp 9, and a ground wire 10 is arranged in the ground wire clamp 9; for transmission towers in geologically active areas, the ground wire hanging mechanism of the present invention can be used to connect the ground wire to the tower body. During the tilting of the tower, the first shaft sleeve 7 is dynamically adjusted on the adjustment track of the long arc-shaped through hole 6, so that the tension on both sides of the ground wire clamp 9 is basically balanced, effectively avoiding the deformation of the tower head caused by the pulling of the ground wire and the critical situation of the connection hardware being pulled off; in addition, ground inspectors can also judge the degree of tilt of the tower by the position of the first shaft sleeve 7 in the long arc-shaped through hole 6.

[0022] On the inner side of the left straight edge of the fan-shaped hanging plate 2, left adjustment hanging holes 4 are arranged at equal intervals along the direction of the straight edge; on the inner side of the right straight edge of the fan-shaped hanging plate 2, right adjustment hanging holes 5 are arranged at equal intervals along the direction of the straight edge; when the degree of inclination of the tower no longer changes, the distance between which left adjustment hanging hole 4 and which right adjustment hanging hole 5 is equal to the above distance can be selected according to the distance between the first shaft sleeve 7 and the lower end of the upper hardware 1 at this time, and then, the upper end of the fan-shaped hanging plate 2 is connected to the lower end of the upper hardware 1 and removed. At the same time, the connection between the upper end of the lower hardware 8 and the first shaft sleeve 7 is removed, and after the removed fan-shaped hanging plate 2 is rotated a certain angle, the selected left adjustment hanging hole 4 is connected to the lower end of the upper hardware 1, and the selected right adjustment hanging hole 5 is connected to the upper end of the lower hardware 8. After the inclination of the tower is stabilized, the ground wire 10 is firmly hung.

[0023] The first sleeve 7 is a bearing, and two parallel convex eaves are provided on the outer ring of the bearing. The bearing is movably connected to the long arc-shaped through hole 6 through the two convex eaves. A pin connected to the lower hardware 8 is passed through the inner ring of the bearing. Setting the first sleeve 7 as a bearing makes the follow-up adjustment action more flexible and smooth when the tower tilts.

[0024] A ground wire hanging point connection mechanism that can effectively resist the inclination of a transmission tower, comprises a ground wire hanging bracket at the top of the transmission tower, a ground wire 10, a fan-shaped hanging plate 2 and a second fan-shaped hanging plate 12, the structure of the fan-shaped hanging plate 2 is exactly the same as that of the second fan-shaped hanging plate 12; a top hanging hole 3 is provided at the intersection of the two straight sides of the fan-shaped hanging plate 2, and a long arc-shaped through hole 6 is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate 2; an upper hardware 1 is hung on the ground wire hanging bracket, the lower end of the upper hardware 1 is hung together with the top hanging hole 3 on the fan-shaped hanging plate 2, a first shaft sleeve 7 is movably provided in the long arc-shaped through hole 6, the upper end of the middle hardware 11 is connected to the first shaft sleeve 7 through a pin shaft, the lower end of the middle hardware 11 is connected to the top hanging hole on the second fan-shaped hanging plate 12, and a movable A second sleeve is provided, and the upper end of the lower hardware 8 is connected to the second sleeve through a second pin shaft, and a ground wire clamp 9 is connected to the lower end of the lower hardware 8, and a ground wire 10 is provided in the ground wire clamp 9; the fan-shaped hanging plate 2 and the second fan-shaped hanging plate 12 are arranged perpendicular to each other; the fan-shaped hanging plate 2 for adjusting the unbalanced tension of the overhead ground wire provided by the present invention is actually also in the category of connecting hardware, and can be widely used in the connection of the overhead ground wire of the pole tower in the goaf, so as to alleviate the deformation of the tower head and damage to the hardware caused by sudden force on the overhead ground wire; two fan-shaped hanging plates that are perpendicular to each other and connected in series are provided to cope with the tilt of the pole tower in various directions, and the unbalanced tension on the ground wire is adjusted from four directions; three or more fan-shaped hanging plates can also be used in series, and these design ideas all fall within the scope of protection of the present invention.

[0025] A ground wire hanging point connection method capable of dynamically adjusting the unbalanced tension of an overhead ground wire comprises a ground wire hanging bracket at the top of a transmission tower, a ground wire 10, and a fan-shaped hanging plate 2. A top hanging hole 3 is provided at the intersection of two straight sides of the fan-shaped hanging plate 2. A long arc-shaped through hole 6 is provided inside the arcuate side of the fan-shaped hanging plate 2. Left adjustment hanging holes 4 are provided at equal intervals along the direction of the straight side on the inside of the left straight side of the fan-shaped hanging plate 2; right adjustment hanging holes 5 are provided at equal intervals along the direction of the straight side on the inside of the right straight side of the fan-shaped hanging plate 2. The method is characterized by the following steps:

[0026] Step 1: Hang the upper hardware 1 on the ground wire hanging bracket, and hang the fan-shaped hanging plate 2 on the lower end of the upper hardware 1 through the top hanging hole 3; movably set the first shaft sleeve 7 in the long arc-shaped through hole 6, and connect the upper end of the lower hardware 8 to the first shaft sleeve 7 through the pin; set the ground wire 10 in the ground wire clamp 9, and connect the lower end of the lower hardware 8 to the ground wire clamp 9;

[0027] In the second step, when the ground wire hanging bracket tilts to the left due to ground settlement, the first sleeve 7 also moves to the left along the long arc-shaped through hole 6, so that the fan-shaped hanging plate 2 moves with the tilt of the tower, while the lower hardware 8 and the connected ground wire clamp 9 remain basically stationary.

[0028] Step 3: After the ground settlement stabilizes, remove the fan-shaped hanging plate 2 according to the distance between the lower hanging point of the upper hardware 1 and the upper hanging point of the lower hardware 8. After the fan-shaped hanging plate 2 is set vertically, the lower end of the upper hardware 1 is hung in the right adjustment hanging hole 5, and the upper end of the lower hardware 8 is hung in the left adjustment hanging hole 4;

[0029] When the settlement is stable, the ground wire can be stably hung by changing the hanging method of the two fan-shaped hanging plates and making full use of the adjustment hanging holes on both sides of the fan-shaped hanging plates.

Claims

1. A method for connecting a ground wire hanging point capable of dynamically adjusting the unbalanced tension of an overhead ground wire, comprising a ground wire hanging bracket at the top of a transmission tower, a ground wire (10) and a fan-shaped hanging plate (2), wherein a top hanging hole (3) is provided at the intersection of two straight sides of the fan-shaped hanging plate (2), a long arc-shaped through hole (6) is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate (2), left adjustment hanging holes (4) are provided at equal intervals along the direction of the straight side on the inner side of the left straight side of the fan-shaped hanging plate (2); and right adjustment hanging holes (5) are provided at equal intervals along the direction of the straight side on the inner side of the right straight side of the fan-shaped hanging plate (2); characterized in that Follow these steps: The first step is to hang the upper hardware (1) on the ground wire hanging bracket, and hang the fan-shaped hanging plate (2) on the lower end of the upper hardware (1) through the top hanging hole (3); in the long arc-shaped through hole (6), a first shaft sleeve (7) is movably set, and the upper end of the lower hardware (8) is connected to the first shaft sleeve (7) through a pin shaft; a ground wire (10) is set in the ground wire clamp (9), and the lower end of the lower hardware (8) is connected to the ground wire clamp (9); In the second step, when the ground wire hanging bracket tilts to the left as the ground settles, the first sleeve (7) also moves to the left along the long arc-shaped through hole (6), so that the fan-shaped hanging plate (2) moves with the tilt of the tower, while the lower hardware (8) and the ground wire clamp (9) connected thereto remain basically stationary; Step 3: After the ground settlement stabilizes, according to the distance between the lower end hanging point of the upper hardware (1) and the upper end hanging point of the lower hardware (8), the fan-shaped hanging plate (2) is removed, and the fan-shaped hanging plate (2) is set vertically. The lower end of the upper hardware (1) is hung in the right adjustment hanging hole (5), and the upper end of the lower hardware (8) is hung in the left adjustment hanging hole (4).

2. A method for connecting ground wire hanging points capable of dynamically adjusting the unbalanced tension of an overhead ground wire according to claim 1, characterized in that: The first sleeve (7) is a bearing having two convex edges parallel to each other on its outer ring. The bearing is movably connected to the long arc-shaped through hole (6) through the two convex edges. A pin connected to the lower metal fitting (8) is passed through the inner ring of the bearing.

3. A method for connecting a ground wire hanging point capable of dynamically adjusting the unbalanced tension of an overhead ground wire, comprising a ground wire hanging bracket at the top of a transmission tower, a ground wire (10), a fan-shaped hanging plate (2), and a second fan-shaped hanging plate (12), wherein the structure of the fan-shaped hanging plate (2) is identical to that of the second fan-shaped hanging plate (12); a top hanging hole (3) is provided at the intersection of two straight sides of the fan-shaped hanging plate (2); a long arc-shaped through hole (6) is provided on the inner side of the arc-shaped side of the fan-shaped hanging plate (2); left adjustment hanging holes (4) are provided at equal intervals on the inner side of the left straight side of the fan-shaped hanging plate (2) along the direction of the straight side; and right adjustment hanging holes (5) are provided at equal intervals on the inner side of the right straight side of the fan-shaped hanging plate (2) along the direction of the straight side; characterized in that Follow these steps: The first step is to hang the upper metal fitting (1) on the ground wire hanging bracket, and hang the fan-shaped hanging plate (2) on the lower end of the upper metal fitting (1) through the top hanging hole (3); movably set the first shaft sleeve (7) in the long arc-shaped through hole (6) on the fan-shaped hanging plate (2), and connect the upper end of the middle metal fitting (11) to the first shaft sleeve (7) through the pin shaft; hang the lower end of the middle metal fitting (11) on the second fan-shaped hanging plate (12) The top hanging hole is provided, and the plate surface of the second fan-shaped hanging plate (12) and the plate surface of the fan-shaped hanging plate (2) are vertically arranged to each other. A second shaft sleeve is movably provided in the long arc-shaped through hole of the second fan-shaped hanging plate (12), and the upper end of the lower hardware (8) is connected to the second shaft sleeve through the second pin shaft; a grounding wire (10) is provided in the grounding wire clamp (9), and the lower end of the lower hardware (8) is connected to the grounding wire clamp (9); In the second step, if the ground wire hanging bracket tilts forward as the ground settles, the first sleeve (7) also moves forward along the long arc-shaped through hole (6), thereby enabling the fan-shaped hanging plate (2) to move as the tower tilts; If the ground wire hanging bracket tilts to the left as the ground settles, the second sleeve also moves to the left along the long arc-shaped through hole (13) of the second sector-shaped hanging plate (12), thereby enabling the second sector-shaped hanging plate (12) to move as the tower tilts; Step 3: After the ground settlement is stable, remove the fan-shaped hanging plate (2), set the fan-shaped hanging plate (2) vertically, hang the lower end of the upper hardware (1) in the right adjustment hanging hole (5), and hang the upper end of the middle hardware (11) in the left adjustment hanging hole (4); remove the second fan-shaped hanging plate (12), set the second fan-shaped hanging plate (12) vertically, hang the lower end of the middle hardware (11) in the right adjustment hanging hole on the second fan-shaped hanging plate (12), and hang the upper end of the lower hardware (8) in the left adjustment hanging hole on the second fan-shaped hanging plate (12).

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