CN114362052A - Power transmission line crossing pay-off system and working method thereof - Google Patents

Abstract

The application discloses transmission line strides across unwrapping wire system, including a pair of gate-type tower, unmanned aerial vehicle group and rigging, the gate-type tower is corresponding erects in the both sides of being strideed across the circuit, and unmanned aerial vehicle group is suitable for to drive the rigging and stridees across the circuit and erect in the top of two gate-type towers to make through dragging the rigging with wire and the ground wire that draw between the adjacent spanning tower stride across the circuit and lay. The beneficial effect of this application: the application provides a new method for line obstacle-crossing paying-off, changes the traditional tension paying-off or crossing frame paying-off mode, and also eliminates the defects of paying-off. When the unmanned aerial vehicle is paid off, only one operation skylight time period needs to be occupied by the unmanned aerial vehicle passing through the bridge, and all other operations are independent channel operations. The problems and obstacles of obstacle-crossing paying off that all influence construction such as civil coordination, obstacle-crossing coordination, compact construction period, skylight time length and the like are avoided.

Description

Power transmission line crossing pay-off system and working method thereof

Technical Field

The application relates to the field of power transmission line construction engineering, in particular to a power transmission line crossing pay-off system.

Background

The existing electric power and communication channels are important guarantee points of the own industry, and the existing electric power and communication channels are important guarantee points of high-speed rails, high-speed rails and the like, so that the whole body is driven by one movement, the coordination operation difficulty is high, the procedures are complicated, and the allowable operation space and time are difficult to fully meet the actual operation requirements. If the difficulty of construction obstruction such as geological weather obstruction, equipment and instrument obstruction, civil obstacle and the like occurs, the line erection work is delayed. Even if the construction is smoothly carried out without any unexpected condition, the skylight permission sacrifice made by the coordinating party also causes certain economic loss or social influence on the industry.

The existing line crossing erection method comprises the following steps: the method comprises tension crossing, floating crossing and crossing frame crossing, wherein the crossing modes have a plurality of auxiliary workflows such as construction civil land encroachment, safety lack, crossing coordination and the like, and cause a plurality of uncertain difficulties for crossing construction. Therefore, there is an urgent need for a pay-off system or method that can perform pay-off without coordination and coordination.

Disclosure of Invention

The application aims to provide a power transmission line crossing pay-off system which does not need to be coordinated and built by oneself when paying off work is carried out.

In order to achieve the purpose, the technical scheme adopted by the application is as follows: the gate-type towers are correspondingly erected on two sides of a crossed line, the gate-type towers are higher than the crossed line, the unmanned aerial vehicle set is suitable for driving the rigging to cross the crossed line and erected at the tops of the two gate-type towers, so that the rigging is dragged to drag a lead and a ground wire between the adjacent crossing towers to cross the crossed line and arrange the lead and the ground wire.

Preferably, the unmanned aerial vehicle unit is suitable for being connected with the rigging through an electromagnetic buckle, the electromagnetic buckle comprises an upper hanging point, a power interface, a remote control receiver and an electromagnetic fixture, the upper portion of the electromagnetic buckle is connected with the unmanned aerial vehicle unit through the upper hanging point, the lower portion of the electromagnetic buckle is magnetically connected with the rigging through the electromagnetic fixture, the electromagnetic buckle is suitable for being electrically connected with the unmanned aerial vehicle unit through the power interface so that power is supplied to the electromagnetic buckle through a power supply of the unmanned aerial vehicle unit, the remote control receiver is installed inside the electromagnetic buckle and is suitable for controlling the electromagnetic fixture to be powered on or powered off according to a received signal so as to control the connection state of the electromagnetic buckle and the rigging.

Preferably, the upper hanging point is connected with the unmanned aerial vehicle unit through a spherical hinge or a flexible wire.

Preferably, the rigging comprises a bridgewire, a guide wire, a pull wire and a corridor wire; the guide line and the traction line are connected in a multipoint uniform manner through waist rings, the unmanned aerial vehicle set is suitable for driving the gap bridge line to be arranged at the top of the portal tower, the gap bridge line is suitable for being connected with the guide line and the traction line, so that the gap bridge line is dragged to pull the guide line and the traction line to move synchronously and be arranged at the top of the portal frame, the guide line is suitable for being connected with the corridor line, and the corridor line is dragged to be arranged at the top of the portal tower along the traction line; the traction wire is adapted to connect the conductor wire and the ground wire such that the line is payed out by pulling the traction wire to pull the conductor wire and the ground wire across the spanned line along the corridor line.

Preferably, a plurality of full circumferential pulleys are uniformly arranged on the gallery line, so that the traction line pulls the lead and the ground wire to support and slide along the full circumferential pulleys, and the lead and the ground wire can be crossed by a crossed line to be laid out in a paying-off mode.

Preferably, the unmanned aerial vehicle group includes two at least unmanned aerial vehicles, unmanned aerial vehicle is suitable for and pulls the both ends of gap bridge line are in order to drive the gap bridge line erects in the top of door type tower.

Preferably, the corridor line is a group of three lines; the all-circumferential pulleys comprise three hanging plates and three pulleys, the hanging plates are in a V shape of 120 degrees, the three hanging plates are circumferentially arranged, so that mounting areas are formed between the adjacent hanging plates, and each mounting area is connected with the corresponding lane line of each group through a mounting cavity; each pulley is correspondingly and rotatably arranged in the mounting area; the pulleys are in an inwards concave waist drum shape, so that a circular sliding cavity for supporting a traction lead and a ground wire is formed in the centers of the three pulleys.

Preferably, a pair of rotating shafts is installed in each of the two installation areas, and a pair of pin shafts is installed in the other installation area; wherein be close to the center of full circumference pulley the pivot with all rotate to install on the round pin axle the pulley, keep away from full circumference pulley center the pivot with the round pin axle with correspond form between the pulley the installation cavity.

Preferably, the pin shaft is connected with the hanging plate through a detachable elastic clamping assembly; a pair of pin seats are arranged on the side wall of the hanging plate between the two pin shaft end parts at intervals; the elastic clamping assembly comprises a pair of pin rods and locking springs, the pin rods are matched with the corresponding pin seats and the corresponding pin shafts, locking pins are arranged at one ends of the pin rods, positioning blocks are arranged at the other ends of the pin rods, pressing blocks are arranged on the side walls of the pin rods, locking holes are formed in the end portions of the pin shafts, the pin rods are suitable for penetrating through the pin seats and clamped with the locking holes through the locking pins, the locking springs are sleeved on the two positioning blocks, and the two ends of each locking spring are abutted to the end portions of the two pin rods respectively; the pressing block is suitable for releasing the locking of the pin shaft by the pin rod through pressing, and then the pin shaft is detached to open the sliding cavity.

Preferably, the working method of the power transmission line crossing pay-off system specifically comprises the following steps:

s100: erecting gate-shaped towers higher than the crossed line on both sides of the crossed line;

s200: arranging a bridge crossing line on a portal tower through at least one pair of unmanned aerial vehicles by utilizing the skylight time of the crossed line;

s300: dragging the gap bridge wire, and dragging the guide wire and the traction wire connected with the gap bridge wire to be distributed on the portal tower through the tension of the gap bridge wire;

s400: the corridor lines connected with the guide lines are laid on the portal tower through the support of the traction lines and the traction of the guide lines, and the tension degree of the corridor lines is adjusted, so that a stable line passing space is formed in the corridor lines;

s500: the wire and the ground wire connected with the traction wire cross the crossed line along the wire passing space through the support of the corridor wire and the traction of the traction wire, and the tension degree of the wire and the ground wire is adjusted; and then the stress state of the corridor line is relieved and the corridor line is recovered.

Compared with the prior art, the beneficial effect of this application lies in:

(1) the application provides a new method for obstacle-crossing line releasing. The traditional tension paying-off or crossing frame paying-off mode is changed, and the paying-off defects are eliminated.

(2) When the unmanned aerial vehicle is paid off, only one operation skylight time period (about two hours) needs to be occupied by the unmanned aerial vehicle passing through the bridge, and all other operations are carried out by the main channel. The problems and obstacles of obstacle-crossing paying off that all influence construction such as civil coordination, obstacle-crossing coordination, compact construction period, skylight time length and the like are avoided.

(3) Adopt the new technology that unmanned aerial vehicle flight was towed, the device of design is novel unique reliable, can ensure to cross over the obstacle and stride across the smooth implementation of unwrapping wire.

(4) The technical scheme of this application no matter the unwrapping wire still receives the line and all can use to and whether the transfer chain is charged state also all can use, application range is wide, and application ability is strong.

Drawings

Fig. 1 is a schematic diagram of a conventional power transmission line crossing a conductor and a ground.

Fig. 2 is a schematic diagram of the unmanned aerial vehicle driving the rigging to perform the line crossing layout.

Fig. 3 is a schematic view of the bridgewire traction guide wire and the traction wire of the present invention.

Fig. 4 is a schematic view of a guide wire traction corridor wire in the present invention.

Fig. 5 is a schematic view of the drawing wire drawing guide wire and the ground wire for paying out the wires according to the present invention.

Fig. 6 is a schematic structural view of the all-circumferential pulley of the present invention.

FIG. 7 is an enlarged view of the portion A of FIG. 6 according to the present invention.

In the figure: the crossing line 100, the crossing tower 200, the conducting wire 210, the ground wire 220, the door-shaped tower 3, the rigging 4, the bridge crossing line 41, the guide line 42, the traction line 43, the waist ring 423, the corridor line 44, the unmanned aerial vehicle 5, the electromagnetic buckle 6, the full-circumferential pulley 7, the sliding cavity 700, the mounting cavity 710, the hanging plate 71, the pin seat 711, the pulley 72, the rotating shaft 73, the pin shaft 74, the locking hole 740, the pin rod 81, the locking pin 811, the pressing block 812, the positioning block 813 and the locking spring 82.

Detailed Description

The present application is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.

In the description of the present application, it should be noted that, for the terms of orientation, such as "central", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., it indicates that the orientation and positional relationship shown in the drawings are based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, but does not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be construed as limiting the specific scope of protection of the present application.

It is noted that the terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the existing power transmission line construction, a situation that two power transmission lines need to be cross-bridged often occurs, and a specific erection state is shown in fig. 1, one of the two power transmission lines is a crossed line 100, and the other power transmission line crosses and lays a conducting wire 210 and a ground wire 220 between adjacent crossing towers 200 above the crossed line 100.

As shown in fig. 2 to 7, in order to facilitate the erection of the power transmission line, one aspect of the present application provides a power transmission line crossing pay-off system, which includes a pair of gate-type towers 3, an unmanned aerial vehicle set and a rigging 4, wherein two gate-type towers 3 are correspondingly erected on both sides of the crossed line 100, the height of the gate-type tower 3 is higher than that of the crossed line 100, the unmanned aerial vehicle set can drive the rigging 4 to cross the crossed line 100 and erect on the top of the two gate-type towers 3, so that the rigging 4 is dragged to pull a conducting wire 210 and a ground wire 220 between adjacent crossing towers 200 to cross the crossed line 100 and arrange, thereby realizing the pay-off of the conducting wire 210 and the ground wire 220 between adjacent crossing towers 200 to cross the crossed line 100. In addition, in the paying-off process, only one operation skylight time period (about two hours) is needed for the unmanned aerial vehicle to cross the portal tower 3 for passing a bridge, and all other operations are performed by the main passage. The problems and obstacles of obstacle-crossing paying off that all influence construction such as civil coordination, obstacle-crossing coordination, compact construction period, skylight time length and the like are avoided.

It can be understood that the power transmission line of the application strides over the pay-off system, and the pay-off system can be used regardless of pay-off or take-up, and can be used regardless of whether the transmission line is in a charged state, so that the application range is wide, and the application capability is strong.

In this embodiment, as shown in fig. 2, the unmanned aerial vehicle is connected to the rigging 4 through the electromagnetic buckle 6, and the electromagnetic buckle 6 includes an upper hanging point, a power interface, a remote control receiver, and an electromagnetic clamp. Wherein the upper portion of electromagnetism buckle 6 is connected with 5 groups of unmanned aerial vehicle through last hanging point, electromagnetism buckle 6's lower part carries out magnetism through electromagnetism fixture and rigging 4 and is connected, electromagnetism buckle 6 can carry out the electricity through power source and unmanned aerial vehicle group's power inlet wire simultaneously and be connected, so that the power through unmanned aerial vehicle group supplies power to the electromagnetism fixture in the electromagnetism buckle 6, remote control receiver installs in the inside of electromagnetism buckle 6, remote control receiver can control the electromagnetism fixture through the signal that receiving operating personnel sent and carry out circular telegram or outage, and then control the connection status of electromagnetism buckle 6 and rigging 4.

In this embodiment, when the unmanned aerial vehicle is flying, the rigging 4 towed by the unmanned aerial vehicle may rotate under the action of the towing force, and may interfere with the flying of the unmanned aerial vehicle, so when the electromagnetic buckle 6 is connected with the unmanned aerial vehicle, the upper hanging point may be connected with the unmanned aerial vehicle in a spherical hinge manner, or connected by using a flexible wire, so as to ensure that the flying of the unmanned aerial vehicle is not affected by inertia or torsion.

It is understood that the electromagnetic buckle 6 is a prior art, and the specific structure thereof is not described here. And the electromagnetic clamping apparatus is in a normally closed working state, the wire clamping force is realized by the pre-compression spring force, the electromagnet is electrified when the wire is loosened, and the wire clamping force can be relieved by reversely compressing the spring, so that the wire releasing is realized.

In this embodiment, as shown in fig. 3 to 5, the rigging 4 comprises a bridgewire 41, a guide wire 42, a pull wire 43 and a corridor wire 44. The guide wire 42 and the traction wire 43 are connected with each other through the waist ring 423 in a multi-point uniform manner, the ends of the guide wire 42 and the traction wire 43 on the same side are connected with the bridging wire 41, the other end of the guide wire 42 is connected with the corridor wire 44, and the other end of the traction wire 43 is connected with the lead wire 210 and the ground wire 220. When the crossing pay-off of the conducting wire 210 and the ground wire 220 is performed, the unmanned aerial vehicle can firstly drive the bridging wire 41 to cross the crossed line 100 and arrange the bridging wire at the top of the gantry type tower 3, so that an operator can drag the guiding wire 42 and the pulling wire 43 to synchronously move by dragging the bridging wire 41 and arrange the bridging wire at the top of the gantry type tower, and thus the double-line crossing of the guiding wire 42 and the pulling wire 43 is realized. The pulling wire 43 is then tensioned on the top of the portal tower 3 by the bridge wire 41, and the operator moves along the pulling wire 43 by pulling the corridor wire 44 by the pulling guide wire 42, thereby completing the laying of the corridor wire 44 with intermittently distributed fulcrums. Finally, the operator pulls the pull wire 43 to pull the conductor 210 and ground wire 220 to slide along the corridor wire 44, thereby paying out the conductor 210 and ground wire 220 across the spanned line 100.

It will be appreciated that the middle of the corridor line 44 is erected between two portal towers 3, while both ends of the corridor line 44 are fixed to the ground by ground anchors or other fixing means having similar functions, so that the corridor line 44 can be used under tension after being erected.

In this embodiment, the bridge wire 41, the guide wire 42, the pull wire 43, and the corridor wire 44 are all made of light insulating materials, so that the load of the unmanned aerial vehicle set can be prevented from being too large under the condition of ensuring the use safety.

In this embodiment, as shown in fig. 4 and 5, a plurality of full circumferential pulleys 7 are uniformly installed on the corridor line 44, so that the traction line 43 slides along the corridor line 44 when the traction lead 210 and the ground line 220 are drawn, the full circumferential pulleys 7 can support and slide the lead 210 and the ground line 220, and the lead 210 and the ground line 220 can be conveniently crossed over the crossed line 100 for paying off and laying.

In this embodiment, as shown in fig. 2, the unmanned aerial vehicle group includes at least two unmanned aerial vehicles 5. When carrying out the erection of rigging 4, can connect the both ends of bridgewire 41 through two unmanned aerial vehicle 5, and then drive the both ends of bridgewire 41 and erect the top crossbeam in door type tower 3. Adopt the new technology that unmanned aerial vehicle flight was towed, the device of design is novel unique reliable, can ensure to cross over the obstacle and stride across the smooth implementation of unwrapping wire.

In this embodiment, two unmanned framves 5 are gap bridge unmanned aerial vehicle. To the crossing unwrapping wire of short distance, generally only need two bridge unmanned aerial vehicle can. And to long distance's crossing unwrapping wire, because the length of crossing the bridge wire 41 increases the back, its weight will greatly increased, thereby can't satisfy through two crossing bridge unmanned aerial vehicles, still need an at least support heavy unmanned aerial vehicle this moment, and then when carrying out long distance crossing unwrapping wire, can pull the both ends of crossing the bridge wire 41 through two crossing bridge unmanned aerial vehicles, pull the middle part of crossing the bridge wire 41 through an at least support heavy unmanned aerial vehicle simultaneously, in order to guarantee that the bridge wire 41 can be by stable the support.

One embodiment of the present application is shown in fig. 6. The corridor line 44 may be used in a set of three lines. The all-circumferential pulley 7 comprises three hanging plates 71 and three pulleys 72, wherein the hanging plates 71 are V-shaped, the included angle of the V-shaped is 120 degrees, meanwhile, the three hanging plates 71 are arranged along the circumferential direction, so that an installation area can be formed between every two adjacent hanging plates 71, and each installation area can be connected with three corresponding lane lines 44 of each group through an installation cavity 710 arranged in each installation area. Each pulley 72 is rotatably mounted in each mounting area correspondingly, each pulley 72 is in a shape of an inward concave waist drum, so that a circular sliding cavity 700 is formed in the center of the three pulleys 72 in the whole circumferential pulley 7, and further the traction wire 43 can pull the lead wire 210 and the ground wire 220 to slide along the sliding cavity 700, and in the process that the lead wire 210 and the ground wire 220 slide along the sliding cavity 700, the pulley 72 can be driven to rotate through the contact between the lead wire 210 and the ground wire 220 and the pulley 72, so that the sliding friction between the pulley 72 and the lead wire 210 and the ground wire 220 is changed into rolling friction, and the traction force required by the movement of the lead wire 210 and the ground wire 220 is reduced.

In this embodiment, as shown in fig. 6, two of the mounting regions are provided with a pair of rotating shafts 73, and the other mounting region is provided with a pair of pins 74. Wherein, the rotating shaft 73 and the pin 74 close to the center of the full circumferential pulley 7 are rotatably provided with the pulleys 72, so that the three pulleys 72 form a sliding cavity 700 at the center of the full circumferential pulley 7; and a mounting cavity 710 for connecting the lane line 44 is formed between the rotating shaft 73 and the pin 74 far away from the full circumferential pulley 7 and the corresponding pulley 72.

In the present embodiment, the pulley 72 is connected to the rotating shaft 73 or the pin 74 via a rolling bearing in order to reduce friction when the pulley 72 rotates.

In this embodiment, as shown in fig. 7, the pin 74 and the hanging plate 71 are connected by a detachable elastic clamping assembly. A pair of pin seats 711 are arranged on the side wall of the hanging plate 71 between one end parts of the two pin shafts 74 at intervals; the elastic clamping assembly comprises a pair of pin rods 81 and a locking spring 82, wherein the two pin rods 81 are correspondingly matched with the two pin bases 711 and the two pin shafts 74. One end of each pin rod 81 is provided with a locking pin 811, the other end of each pin rod 81 is provided with a positioning block 813, the extension directions of the locking pins 811 of the two pin rods 81 are opposite, and the extension directions of the positioning blocks 813 on the two pin rods 81 are opposite; the side wall of the pin rod 81 is also provided with a pressing block 812; locking holes 740 are provided at the ends of both pins 74. When the pin rod 81 locks the pin shaft 74, the pin rod 81 passes through the pin seat 711 and is clamped with the locking hole 740 on the pin shaft 74 through the locking pin 811, at this time, the locking spring 82 is sleeved on the two positioning blocks 813, and two ends of the locking spring 82 respectively abut against the end parts of the two pin rods 81, so that the pin rod 81 and the pin seat 711 are ensured to be stably connected under the elastic force of the locking spring 82. When the locking of the pin 74 needs to be released, the pressing block 812 is pressed to move the two pin levers 81 relative to each other, so that the locking pin 811 can be disconnected from the locking hole 740. The pin 74 can be easily removed from the hanging plate 71 to open the sliding cavity 700, thereby facilitating the pull wire 43, the lead wire 210 and the ground wire 220 to be placed in or separated from the sliding cavity 700.

Another aspect of the present application provides a working method of a crossing pay-off system for a power transmission line, which specifically includes the following steps:

s100: a gate tower 3 higher than the spanned line 100 is erected on both sides of the spanned line 100.

S200: the gap bridge wire 41 is laid on the gate tower 3 by at least one pair of the drones 5 using the skylight time of the line 100 being crossed.

S300: the gap bridge wire 41 is dragged, and the guide wire 42 and the traction wire 43 connected with the gap bridge wire 41 are dragged to be arranged on the portal tower 3 through the tension of the gap bridge wire 41.

S400: by supporting the traction wire 43 and pulling the guide wire 42, the corridor wire 44 connected to the guide wire 42 is laid on the gantry tower 3, and the tension of the corridor wire 44 is adjusted, so that a stable wire passing space is formed in the corridor wire 44.

S500: through the support of the lane wire 44 and the traction of the traction wire 43, the conductive wire 210 and the ground wire 220 connected with the traction wire 43 pass over the spanned line 100 along the wire passing space, and the tightness of the conductive wire 210 and the ground wire 220 is adjusted; the porch line 44 is then relieved of force and recovered.

The application provides a new method for line obstacle-crossing paying-off, changes the traditional tension paying-off or crossing frame paying-off mode, and also eliminates the paying-off defects.

The foregoing has described the general principles, essential features, and advantages of the application. It will be understood by those skilled in the art that the present application is not limited to the embodiments described above, which are merely illustrative of the principles of the application, but that various changes and modifications may be made without departing from the spirit and scope of the application, and these changes and modifications are intended to be within the scope of the application as claimed. The scope of protection claimed by this application is defined by the following claims and their equivalents.

Claims (10)

1. A power transmission line crossing pay-off system is characterized by comprising:

the gate towers are correspondingly erected on two sides of the crossed line, and are higher than the crossed line;

a rigging adapted to connect a wire and a ground between adjacent spanning towers; and

the unmanned unit is suitable for driving the rigging to cross the crossed line and is arranged at the top of the gantry tower, and further the rigging is dragged to cross the crossed line by a guide line and a ground line and is arranged at an adjacent crossing tower.

2. The power transmission line crossing pay-off system of claim 1, wherein: the unmanned aerial vehicle set is suitable for being connected with the rigging through an electromagnetic buckle; the upper part of the electromagnetic buckle is suitable for being connected with the unmanned aerial vehicle set through an upper hanging point, and the lower part of the electromagnetic buckle is suitable for being magnetically connected with the rigging through an electromagnetic fixture; the electromagnetic buckle is internally provided with a remote control receiver, and the remote control receiver is suitable for controlling the electromagnetic clamp to be powered on or powered off according to received signals.

3. The power transmission line crossing pay-off system of claim 2, wherein: the electromagnetic buckle is characterized in that a power supply interface is further arranged inside the electromagnetic buckle and connected with a power supply of the unmanned aerial vehicle set, so that the electromagnetic clamp is powered by the power supply of the unmanned aerial vehicle set.

4. The power transmission line crossing pay-off system of claim 2, wherein: the upper hanging point is connected with the unmanned aerial vehicle set through a spherical hinge or a flexible wire.

5. The line crossing de-line system according to any one of claims 1-4, characterized in that: the rigging includes:

a bridge wire adapted to span a spanned line under traction of the unmanned aerial vehicle unit and arranged at the top of the gantry tower;

the guide wire and the traction wire are uniformly connected at multiple points through waist rings, and one ends of the guide wire and the traction wire are connected with the gap bridge wire, so that the gap bridge wire is dragged to lead the guide wire and the traction wire to synchronously move and be distributed at the top of the portal frame; and

the corridor wire is connected with the other end of the guide wire, so that the corridor wire is pulled to be erected on the top of the door-shaped tower along the pulling wire by pulling the guide wire;

the other end of the traction wire is connected with the lead wire and the ground wire, so that the lead wire and the ground wire are paid out along the spanned line by dragging the traction wire to draw the lead wire and the ground wire.

6. The line crossing de-line system of claim 5, wherein: a plurality of full circumferential pulleys are uniformly arranged on the gallery line, so that the traction line pulls the lead and the ground wire to slide along the full circumferential pulleys in a supporting mode, and the lead and the ground wire can be crossed by the crossed line to be laid out in a paying-off mode.

7. The line crossing de-line system of claim 5, wherein: unmanned aerial vehicle group includes two at least unmanned aerial vehicle, unmanned aerial vehicle is suitable for to pull the both ends of gap bridge line are in order to drive gap bridge line erects in door type tower top.

8. The power transmission line crossing pay-off system of claim 6, wherein: the corridor line is a group of three lines; the all-circumferential pulley includes:

the hanging plates are in a V shape of 120 degrees, the three hanging plates are arranged in a circumferential mode, so that an installation area is formed between every two adjacent hanging plates, and each installation area is connected with the corresponding lane line of each group through an installation cavity; and

the three pulleys are correspondingly and rotatably arranged in the mounting area; the pulleys are in a concave waist drum shape, so that a circular sliding cavity for supporting and drawing the conducting wire and the ground wire is formed in the centers of the three pulleys.

9. The power transmission line crossing pay-off system of claim 8, wherein: the two mounting areas are respectively provided with a pair of rotating shafts, and the other mounting area is provided with a pair of pin shafts; the pulleys are rotatably mounted on the rotating shaft and the pin shaft which are close to the center of the all-circumferential pulley, and the mounting cavities are formed between the rotating shaft and the pin shaft which are far away from the center of the all-circumferential pulley and the corresponding pulleys; the pin shaft is connected with the hanging plate through a detachable elastic clamping assembly, so that the pin shaft is detached to open the sliding cavity.

10. A working method of a power transmission line crossing pay-off system is characterized by comprising the following steps: the method comprises the following steps:

s100: erecting gate-shaped towers higher than the crossed line on both sides of the crossed line;

s200: arranging a bridge crossing line on a portal tower through at least one pair of unmanned aerial vehicles by utilizing the skylight time of the crossed line;

s300: dragging the gap bridge wire, and dragging the guide wire and the traction wire connected with the gap bridge wire to be distributed on the portal tower through the tension of the gap bridge wire;

s400: the corridor lines connected with the guide lines are laid on the portal tower through the support of the traction lines and the traction of the guide lines, and the tension degree of the corridor lines is adjusted, so that a stable line passing space is formed in the corridor lines;

s500: the wire and the ground wire connected with the traction wire cross the crossed line along the wire passing space through the support of the corridor wire and the traction of the traction wire, and the tension degree of the wire and the ground wire is adjusted; and then the stress state of the corridor line is relieved and the corridor line is recovered.

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