A Compact Electric Field Inlet / Outlet Device and Method for the Side Phase of a Tower

Abstract

The present invention relates to a compact pole tower side phase entry and exit electric field device, comprising a first insulating ladder in the line direction, a second insulating ladder in the horizontal line direction, an insulating support rope and a sliding track control rope; the second insulating ladder in the horizontal line direction is slidably connected to the first insulating ladder; the first insulating ladder is connected to an insulating support rope; the second insulating ladder is connected to a sliding track control rope. The present invention also relates to a compact pole tower side phase entry and exit electric field method, the tower personnel control the second insulating ladder away from the tower body to a specified position through the set insulating support rope and the sliding track control rope, and the equipotential personnel enter the electric field along the first insulating ladder, the second insulating ladder, and the track of the conductor in turn to carry out maintenance work; the present invention can realize the compact pole tower side phase entry and exit electric field to carry out fault elimination.

Description

Technical Field

[0001] The present invention belongs to the technical field of live maintenance equipment and methods, and more specifically, relates to a compact tower side-phase entering electric field device and method. Background Art

[0002] As a new technology, the compact transmission line changes the arrangement of conductor positions, achieving the effects of reducing inductance and increasing capacitance, thereby reducing the line impedance and increasing the natural power; at the same time, the line corridor is greatly reduced due to the compact arrangement of conductor positions, and the social and economic benefits are remarkable.

[0003] With the gradual completion of the ultra-high voltage and extra-high voltage backbone grid of the State Grid, the safe and stable operation of the power grid has become the top priority of work. Once a power accident occurs, it will cause great fluctuations, oscillations and even disconnections in the power grid. In order to improve power supply reliability and strengthen operation and maintenance technology, live maintenance operations have become the top priority.

[0004] Chinese Patent CN112736768A discloses a method for entering the middle-phase electric field of a compact line, which uses tools for entering the side-phase electric field and tools for entering the middle-phase electric field; the tool for entering the side-phase electric field is an insulating flat ladder and a fitting composed of angle steel clamps and wire hooks respectively connected to both ends thereof. The tool for entering the middle-phase electric field is an insulating centipede ladder and a fitting composed of angle steel hooks and an insulating hanging basket respectively connected to both ends thereof, and the insulating hanging basket is connected to two bundles of insulating control ropes. The operator first installs the tool for entering the side-phase electric field, and then uses this tool to fix the angle steel hook of the tool for entering the middle-phase electric field on the side-phase conductor, and then enters the middle-phase electric field for operation by riding in the insulating hanging basket. The length of the centipede body can be adjusted as needed. The centipede ladder has a small transverse volume but is a rigid ladder. It is not only convenient for controlling the descending direction of the insulating hanging basket, but also the operator can climb along the centipede ladder to adjust the operation position, ensuring the installation distance during the operation process, with flexible operation and improving the safety of live working.

[0005] Chinese Patent CN106786146A relates to a method for entering an equipotential during the construction of a high-voltage line, especially a method for entering an equipotential of a 500kV three-phase common-tower window single-circuit transmission line compact straight tower, providing methods for entering an equipotential from the side phase and the middle phase. This operation method adopts the technical solution of entering the equipotential from outside the tower window, and the safety distance is much greater than the combined gap required for live working, solving the problem that the conventional method cannot meet the minimum combined gap for entering an equipotential of a three-phase common-tower window compact transmission line, and also ensuring that the equipotential electrician can enter the strong electric field safely and reliably. The live working tools used in the present invention are light, simple, safe and practical, can complete the equipotential operation of entering a three-phase common-tower window compact straight tower, and are especially suitable for live working on mountainous area lines, with the advantages of few tools and easy operation.

[0006] At present, the soft ladder method is usually adopted for the middle phase to enter and exit the electric field during live working on compact towers. However, due to the limitation of the tower window size between the side phase conductor and the iron tower, there is currently no corresponding device and method to realize the side phase entering and exiting the electric field of compact towers. Once a defect occurs in the side phase conductor or the conductor end fitting of a compact transmission line, power outage is required for maintenance, which greatly reduces the power supply reliability of the backbone network and causes significant economic losses. Summary of the Invention

[0007] The purpose of the present invention is to provide a device and method for the side phase to enter and exit the electric field of a compact tower, which can realize the safe and efficient elimination of defects when the side phase of the compact tower enters and exits the electric field.

[0008] To achieve the above purpose, the technical solution adopted by the present invention is:

[0009] A device for the side phase to enter and exit the electric field of a compact tower includes a first insulating flat ladder in the line direction, a second insulating flat ladder in the cross-line direction, an insulating support rope, and a sliding track control rope;

[0010] The second insulating flat ladder in the cross-line direction is slidably connected to the first insulating flat ladder;

[0011] An insulating support rope is connected to the first insulating flat ladder;

[0012] A sliding track control rope is connected to the second insulating flat ladder.

[0013] Preferably, a first fixing ring and a roller are installed at the head end of the first insulating flat ladder in the line direction.

[0014] Preferably, a first pulley is installed at the head end of the second insulating flat ladder in the cross-line direction, a second pulley is installed at the tail end, and a second fixing ring is installed in the middle part.

[0015] Preferably, an insulating support rope is connected to the first fixing ring, and the sliding track control rope is connected to the second fixing ring.

[0016] Preferably, the first pulley is clamped on the first insulating flat ladder and freely slides on the ladder frame of the first insulating flat ladder.

[0017] Preferably, the sliding track control rope freely slides along the roller, and an anti-detachment structure for preventing the sliding track control rope from coming off is provided on the roller.

[0018] Preferably, the second pulley is clamped on the conductor and freely slides on the conductor.

[0019] Preferably, a clamping groove is installed at the tail end of the first insulating flat ladder in the line direction, the clamping groove is freely clamped on the angle steel, and the clamping groove is provided with a locking device.

[0020] Preferably, the end of the first insulating flat ladder is inserted into the angle steel. A fixing device is provided at the end of the first insulating flat ladder. Both the insulating support rope and the sliding track control rope are insulating ropes.

[0021] Preferably, a method for entering and exiting the electric field at the side phase of a compact tower includes the following steps: First, install the first insulating flat ladder. When installing, one end of the insulating support rope is fixed to the first fixing ring, and then the sliding track control rope is wound around the roller. The personnel on the tower cooperate with each other to release the first insulating flat ladder along the line direction. After reaching the appropriate position, fix the end slot on the angle steel, and fix the other end of the insulating support rope at an appropriate position on the cross arm.

[0022] Next, install the second insulating flat ladder. First, fix the sliding track control rope to the second fixing ring, and then respectively place the second pulleys at both ends of the second insulating flat ladder on the conductor, and place the first pulley on the ladder frame of the first insulating flat ladder to complete the installation.

[0023] The personnel on the tower control the second insulating flat ladder to move away from the tower body to the designated position through the erected insulating support rope and sliding track control rope. The equipotential personnel enter the electric field along the trajectories of the first insulating flat ladder, the second insulating flat ladder, and the conductor in sequence to carry out maintenance operations.

[0024] When exiting the electric field after the maintenance is completed, follow the opposite trajectory:

[0025] After the defect elimination is completed and the maintenance operation is finished, the equipotential personnel exit the strong electric field along the trajectories of the conductor - the second insulating flat ladder - the first insulating flat ladder in sequence to complete the equipotential defect elimination work.

[0026] The beneficial effects of a device and method for entering and exiting the electric field at the side phase of a compact tower provided by the present invention are as follows:

[0027] The present invention can realize entering and exiting the electric field at the side phase of a compact tower to carry out defect elimination. The structural form of the first insulating flat ladder in the line direction overlapping with the second insulating flat ladder in the cross-line direction ensures the safety distance and combined gap during the live working process. The structural design of the triangular reverse tension fixation of the insulating support rope ensures that the overlapping of the flat ladders has sufficient support strength. The movement mode of the combination of the sliding track control rope and the pulley realizes the free sliding of the insulating flat ladder in the cross-line direction between the conductor and the ladder frame, reduces the labor intensity, and thus reduces the number of personnel working on the tower. The device and method for entering and exiting the electric field at the side phase of a compact tower provided by the present invention innovate the live working method, enabling the live working at the side phase of a compact tower to be realized; at the same time, the device is easy to operate and the method is simple and clear, which plays a role in improving the safety factor and working efficiency in the live maintenance operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1Schematic diagram of the overall structure of the side-phase electric field access device for a compact tower in Embodiment 1 of the present invention;

[0029] Figure 2 Schematic diagram of the structure of Part A in Embodiment 1A of the present invention;

[0030] Figure 3 Schematic diagram of the structure of the second insulating flat ladder in the transverse line direction of the present invention;

[0031] Figure 4 Schematic diagram of the partial structure of the side-phase electric field access device for a compact tower in Embodiment 2 of the present invention;

[0032] In the drawings, 1. First insulating flat ladder;

[0033] 2. Second insulating flat ladder;

[0034] 3. Insulating support rope;

[0035] 4. Sliding track control rope;

[0036] 5. Card slot;

[0037] 6. First fixing ring;

[0038] 7. Roller;

[0039] 8. First pulley;

[0040] 9. Second fixing ring;

[0041] 10. Second pulley. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and in no way constitutes a limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0043] It should be noted that the terms used herein are only for describing specific implementation manners and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless otherwise clearly specified in the context, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in these embodiments do not limit the scope of this application. At the same time, it should be understood that, for the sake of convenience of description, the dimensions of the various parts shown in the drawings are not drawn in actual proportional relationships. Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorization specification. In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that like reference numerals and letters denote like items in the following drawings, and thus, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0045] In the description of this application, it should be understood that the orientation or positional relationships indicated by orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, perpendicular, horizontal", and "top, bottom", etc., are usually based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing this application and simplifying the description. Without contrary instructions, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this application; the orientation words "inside, outside" refer to the inside and outside relative to the contour of each component itself.

[0046] For the convenience of description, spatial relative terms such as "above...", "over...", "on the upper surface of...", "above", etc. can be used here to describe the spatial positional relationships between a device or feature shown in the drawings and other devices or features. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation described in the drawings for the device. For example, if the device in the drawing is inverted, the device described as "above other devices or structures" or "over other devices or structures" will then be positioned "below other devices or structures" or "under other devices or structures". Thus, the exemplary term "above..." can include both the orientations of "above..." and "below...". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and corresponding interpretations should be made for the spatial relative descriptions used here.

[0047] In addition, it should be noted that the use of words such as "first", "second", etc. to limit components is only for the convenience of distinguishing the corresponding components. Without otherwise stating, the above words have no special meanings, and thus should not be construed as limiting the scope of protection of this application.

[0048] Embodiment 1

[0049] As Figures 1-3 shown, a compact tower side-phase access electric field device includes a first insulating flat ladder 1 in the line direction, a second insulating flat ladder 2 in the cross-line direction, an insulating support rope 3, and a sliding track control rope 4;

[0050] The tail end of the first insulating flat ladder 1 in the line direction is equipped with a clamping groove 5, which is freely clamped on the angle steel, and the clamping groove 5 is provided with a locking device; the head end of the first insulating flat ladder 1 is equipped with a first fixing ring 6 and a roller 7, and the insulating support rope 3 is connected to the first fixing ring 6. The head end of the second insulating flat ladder 2 in the cross-line direction is equipped with a first pulley 8, the tail end is equipped with a second pulley 10, and the middle part is equipped with a second fixing ring 9, and the second fixing ring 9 is connected to the sliding track control rope 4.

[0051] The first pulley 8 is clamped on the first insulating flat ladder 1 and freely slides on the ladder frame of the first insulating flat ladder 1. The sliding track control rope 4 freely slides along the roller 7, and an anti-disengagement structure for preventing the sliding track control rope 4 from disengaging is provided on the roller 7. The second pulley 10 is clamped on the wire and freely slides on the wire.

[0052] Both the insulating support rope 3 and the sliding track control rope 4 are insulating ropes.

[0053] Embodiment 2

[0054] As Figures 3-4 shown, a compact tower side-phase access electric field device includes a first insulating flat ladder 1 in the line direction, a second insulating flat ladder 2 in the cross-line direction, an insulating support rope 3, and a sliding track control rope 4;

[0055] The tail end of the first insulating flat ladder 1 in the line direction is freely inserted into the angle steel, and the tail end of the first insulating flat ladder 1 is provided with a fixing device; the head end of the first insulating flat ladder 1 is equipped with a first fixing ring 6 and a roller 7, and the insulating support rope 3 is connected to the first fixing ring 6. The head end of the second insulating flat ladder 2 in the cross-line direction is equipped with a first pulley 8, the tail end is equipped with a second pulley 10, and the middle part is equipped with a second fixing ring 9, and the second fixing ring 9 is connected to the sliding track control rope 4.

[0056] The first pulley 8 is clamped on the first insulating flat ladder 1 and freely slides on the ladder frame of the first insulating flat ladder 1. The sliding track control rope 4 freely slides along the roller 7, and an anti-disengagement structure for preventing the sliding track control rope 4 from disengaging is provided on the roller 7. The second pulley 10 is clamped on the wire and freely slides on the wire.

[0057] Both the insulating support rope 3 and the sliding track control rope 4 are insulating ropes.

[0058] Example 3

[0059] As shown Figures 1-3 in the figure, for the method of entering and exiting the electric field at the side phase of a compact tower in Example 1:

[0060] First, install the first insulating flat ladder 1. When installing, one end of the insulating support rope 3 is fixed on the first fixing ring 6, then the sliding track control rope 4 is wound around the roller 7, and the personnel on the tower cooperate with each other to release the first insulating flat ladder 1 along the line direction. After reaching the appropriate position, fix the tail end slot 5 on the angle steel, and the other end of the insulating support rope 3 is fixed at an appropriate position on the cross arm;

[0061] Next, install the second insulating flat ladder 2. First, fix the sliding track control rope 4 on the second fixing ring 9, then respectively clamp the second pulleys 10 at both ends of the second insulating flat ladder 2 on the wire, and the first pulley 8 is clamped on the ladder frame of the first insulating flat ladder 1 to complete the installation;

[0062] The personnel on the tower control the second insulating flat ladder 2 to move away from the tower body to the designated position through the erected insulating support rope 3 and sliding track control rope 4. The equipotential personnel enter the electric field in turn along the tracks of the first insulating flat ladder 1, the second insulating flat ladder 2, and the wire to carry out maintenance operations;

[0063] When exiting the electric field after the maintenance is completed, follow the opposite track:

[0064] After the defect elimination and the maintenance operation are completed, the equipotential personnel exit the strong electric field in turn along the tracks of the wire - the second insulating flat ladder - the first insulating flat ladder to complete the equipotential defect elimination work.

[0065] Example 4

[0066] As shown Figures 1-3 in the figure, for the working process of entering and exiting the electric field at the side phase of a compact tower in Example 1:

[0067] Step 1, the maintenance personnel on the tower carry the transfer rope to the cross arm of the iron tower.

[0068] Step 2, the equipotential maintenance personnel climb the tower to the angle iron at the parallel position of the side phase.

[0069] Step 3, the ground personnel transfer the insulating support rope 3, the sliding track control rope 4 and the first insulating flat ladder 1 in the line direction to the cross arm position, and the maintenance personnel on the tower tie one end of the insulating support rope 4 to the first fixing ring 6.

[0070] Step 4, the ground personnel slowly lower the first insulating flat ladder 1 in the line direction to the position of the angle iron parallel to the wire, and then the equipotential maintenance personnel wind the sliding track control rope 4 around the head roller 7 and take anti - detachment measures.

[0071] Step 5: Untie the transfer rope. The maintenance personnel on the tower and the live-line maintenance personnel cooperate with each other to slowly release the first insulating flat ladder 1 along the line direction. After reaching the appropriate position, fix the tail slot 5 on the angle steel, and fix the other end of the insulating support rope 3 at an appropriate position on the cross arm.

[0072] Step 6: The ground personnel transfer the second insulating flat ladder 2 in the cross-line direction to the angle iron at the parallel position of the side phase.

[0073] Step 7: The live-line maintenance personnel fix the sliding track control rope 4 on the second fixing ring 9 of the second insulating flat ladder 2.

[0074] Step 8: The maintenance personnel on the tower and the live-line maintenance personnel cooperate with each other to clamp the second pulleys 10 at both ends of the second insulating flat ladder 2 on the conductor, and clamp the first pulley 8 on the ladder frame of the first insulating flat ladder 1 to complete the installation.

[0075] Step 9: The live-line electrician pulls the sliding track control rope 4 to control the second insulating flat ladder 2 to slide on the conductor and on the ladder frame of the first insulating flat ladder 1, and move away from the tower body to the designated position.

[0076] Step 10: The live-line personnel enter the electric field along the trajectory of the first insulating flat ladder 1 - the second insulating flat ladder 2 - the conductor to carry out maintenance operations;

[0077] When exiting the electric field after the maintenance is completed, follow the reverse trajectory: After the defect elimination and the maintenance operation are completed, the live-line personnel exit the strong electric field in turn along the trajectory of the conductor - the second insulating flat ladder - the first insulating flat ladder to complete the live-line defect elimination work.

[0078] The present invention can realize defect elimination for the side phase of a compact tower to enter and exit the electric field. The structural form of the lap joint between the first insulating flat ladder in the line direction and the second insulating flat ladder in the cross-line direction ensures the safety distance and combined gap during the live working process. The structural design of the triangular reverse tension fixation of the insulating support rope ensures that the flat ladder lap joint has sufficient support strength. The movement mode of the combination of the sliding track control rope and the pulley realizes the free sliding of the cross-line insulating flat ladder between the conductor and the ladder frame, reduces the labor intensity, and further reduces the number of personnel working on the tower. The device and method for the side phase of a compact tower to enter and exit the electric field provided by the present invention innovate the live working mode, enabling the live working of the side phase of a compact tower to be realized; at the same time, the device is easy to operate and the method is simple and clear, which plays a role in improving the safety factor and working efficiency in the live maintenance operation.

[0079] Example 5

[0080] As Figures 3-4 shown, for the method of a compact tower side phase entering and exiting the electric field in Example 2:

[0081] First, install the first insulating flat ladder 1. When installing, one end of the insulating support rope 3 is fixed to the first fixing ring 6. Then, pass the sliding track control rope 4 around the roller 7. The personnel on the tower cooperate with each other to release the first insulating flat ladder 1 along the line direction. After reaching the appropriate position, fix the tail end on the angle steel and fix it with a fixing device. The other end of the insulating support rope 3 is fixed to an appropriate position on the cross arm.

[0082] Next, install the second insulating flat ladder 2. First, fix the sliding track control rope 4 to the second fixing ring 9. Then, respectively, clamp the second pulleys 10 at both ends of the second insulating flat ladder 2 on the conductor, and clamp the first pulley 8 on the ladder frame of the first insulating flat ladder 1 to complete the installation.

[0083] The personnel on the tower control the second insulating flat ladder 2 to move away from the tower body to the designated position through the erected insulating support rope 3 and sliding track control rope 4. The equipotential personnel enter the electric field along the tracks of the first insulating flat ladder 1, the second insulating flat ladder 2, and the conductor in sequence to carry out maintenance operations.

[0084] When exiting the electric field after the maintenance is completed, follow the opposite track:

[0085] After the defect elimination is completed and the maintenance operation is finished, the equipotential personnel exit the strong electric field along the tracks of the conductor - the second insulating flat ladder - the first insulating flat ladder in sequence to complete the equipotential defect elimination work.

[0086] The present invention can realize the defect elimination by entering and exiting the electric field at the side phase of the compact tower. The structural form of the lap joint between the first insulating flat ladder in the line direction and the second insulating flat ladder in the cross - line direction ensures the safety distance and combined gap during the live working process. The structural design of the triangular reverse - tension fixation of the insulating support rope ensures that the flat ladder lap joint has sufficient support strength. The movement mode of the combination of the sliding track control rope and the pulley realizes the free sliding of the cross - line - direction insulating flat ladder between the conductor and the ladder frame, reduces the labor intensity, and further reduces the number of personnel working on the tower. The device and method for entering and exiting the electric field at the side phase of the compact tower provided by the present invention innovate the live working method, enabling the live working at the side phase of the compact tower to be realized; at the same time, the device is easy to operate and the method is simple and clear, playing a role in improving the safety factor and working efficiency in the live maintenance operation.

[0087] Embodiment 6

[0088] As Figures 3-4 shown, for the working process of a compact tower side - phase entering and exiting the electric field in Embodiment 2:

[0089] Step 1, the maintenance personnel on the tower carry the transfer rope to the cross arm of the iron tower.

[0090] Step 2, the equipotential maintenance personnel climb the tower to the angle iron at the side - phase parallel position.

[0091] Step 3: The ground personnel transfer the insulating support rope 3, the sliding track control rope 4 and the first insulating flat ladder 1 in the line direction to the cross-arm position, and the maintenance personnel on the tower tie one end of the insulating support rope 4 to the first fixing ring 6.

[0092] Step 4: The ground personnel slowly lower the first insulating flat ladder 1 in the line direction to the angle iron position parallel to the conductor. Then, the live-line maintenance personnel bypass the sliding track control rope 4 around the head roller 7 and take anti-disengagement measures.

[0093] Step 5: Untie the transfer rope. The maintenance personnel on the tower and the live-line maintenance personnel cooperate with each other to slowly release the first insulating flat ladder 1 in the line direction. After reaching the appropriate position, fix the tail end on the angle iron and fix it with a fixing device. Fix the other end of the insulating support rope 3 at an appropriate position on the cross-arm.

[0094] Step 6: The ground personnel transfer the second insulating flat ladder 2 in the cross-line direction to the angle iron at the parallel position of the side phase.

[0095] Step 7: The live-line maintenance personnel fix the sliding track control rope 4 on the second fixing ring 9 of the second insulating flat ladder 2. Step 8: The maintenance personnel on the tower and the live-line maintenance personnel cooperate with each other to clamp the second pulleys 10 at both ends of the second insulating flat ladder 2 on the conductor, and clamp the first pulley 8 on the ladder frame of the first insulating flat ladder 1 to complete the installation.

[0096] Step 9: The live-line electrician pulls the sliding track control rope 4 to control the second insulating flat ladder 2 to slide on the conductor and on the ladder frame of the first insulating flat ladder 1, and move away from the tower body to the designated position.

[0097] Step 10: The live-line personnel enter the electric field along the trajectory of the first insulating flat ladder 1 - the second insulating flat ladder 2 - the conductor to carry out maintenance operations;

[0098] When exiting the electric field after the maintenance is completed, follow the reverse trajectory:

[0099] After the defect elimination is completed and the maintenance work is finished, the live-line personnel exit the strong electric field along the trajectory of the conductor - the second insulating flat ladder - the first insulating flat ladder in sequence to complete the live-line defect elimination work.

[0100] The present invention can achieve defect elimination by entering and exiting the electric field at the side phase of a compact tower. The structural form of the first insulating flat ladder in the line direction lapping with the second insulating flat ladder in the cross-line direction ensures the safety distance and combined gap during live working. The structural design of the triangular reverse tension fixation of the insulating support ropes ensures that the flat ladder lap joint has sufficient support strength. The motion mode of the combination of the sliding track control rope and the pulley realizes the free sliding of the cross-line insulating flat ladder between the conductor and the ladder frame, reduces the labor intensity, and thus reduces the number of tower workers. A device and method for entering and exiting the electric field at the side phase of a compact tower provided by the present invention innovate the live working mode, enabling live working at the side phase of a compact tower; at the same time, the device is easy to operate and the method is simple and clear, playing a role in improving the safety factor and working efficiency in live maintenance operations.

Claims

1. A compact tower side-phase entering and exiting electric field device, characterized in that, it includes a first insulating flat ladder (1) in the line direction, a second insulating flat ladder (2) in the cross-line direction, an insulating support rope (3) and a sliding track control rope (4); The second insulating flat ladder (2) in the cross-line direction is slidably connected to the first insulating flat ladder (1); An insulating support rope (3) is connected to the first insulating flat ladder (1); A sliding track control rope (4) is connected to the second insulating flat ladder (2); A first fixing ring (6) and a roller (7) are installed at the head end of the first insulating flat ladder (1) in the line direction; A first pulley (8) is installed at the head end of the second insulating flat ladder (2) in the cross-line direction, a second pulley (10) is installed at the tail end, and a second fixing ring (9) is installed in the middle part; The insulating support rope (3) is connected to the first fixing ring (6), and the sliding track control rope (4) is connected to the second fixing ring (9); The first pulley (8) is clamped on the first insulating flat ladder (1) and freely slides on the ladder frame of the first insulating flat ladder (1); The sliding track control rope (4) freely slides along the roller (7), and an anti-detachment structure for preventing the sliding track control rope (4) from coming off is provided on the roller (7).

2. The compact tower side-phase entering and exiting electric field device according to claim 1, characterized in that, The second pulley (10) is clamped on the wire and freely slides on the wire.

3. The compact tower side-phase entering and exiting electric field device according to claim 1, characterized in that, A card slot (5) is installed at the tail end of the first insulating flat ladder (1) in the line direction, the card slot (5) is freely clamped on the angle steel, and the card slot (5) is provided with a locking device.

4. The compact tower side-phase entering and exiting electric field device according to claim 1, characterized in that, The tail end of the first insulating flat ladder (1) is inserted into the angle steel, a fixing device is provided at the tail end of the first insulating flat ladder (1), and both the insulating support rope (3) and the sliding track control rope (4) are insulating ropes.

5. A method for a compact tower side-phase entering and exiting electric field, using the compact tower side-phase entering and exiting electric field device according to any one of claims 1-4, characterized in that, it includes the following steps: First, install the first insulating flat ladder (1). When installing, one end of the insulating support rope (3) is fixed to the first fixing ring (6), then the sliding track control rope (4) is wound around the roller (7), and the personnel on the tower cooperate with each other to release the first insulating flat ladder (1) in the line direction. After reaching the appropriate position, fix the tail-end card slot (5) on the angle steel, and fix the other end of the insulating support rope (3) at an appropriate position on the cross arm; Next, install the second insulating flat ladder (2). First, fix the sliding track control rope (4) to the second fixing ring (9), then clamp the second pulleys (10) at both ends of the second insulating flat ladder (2) on the wire, and clamp the first pulley (8) on the ladder frame of the first insulating flat ladder (1) to complete the installation. Personnel on the tower control the second insulating flat ladder (2) to move away from the tower body to a designated position through the erected insulating support ropes (3) and sliding track control ropes (4). The live-line working personnel enter the electric field along the trajectories of the first insulating flat ladder (1), the second insulating flat ladder (2), and the conductor in sequence to carry out maintenance operations; When exiting the electric field after the maintenance, proceed along the reverse trajectory: After the defects are eliminated and the maintenance work is completed, the live-line working personnel exit the strong electric field along the trajectories of the conductor - the second insulating flat ladder - the first insulating flat ladder in sequence to complete the live-line defect elimination work.

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