CN204651782U - Phase connection device in one - Google Patents

Phase connection device in one Download PDF

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Publication number
CN204651782U
CN204651782U CN201520382424.9U CN201520382424U CN204651782U CN 204651782 U CN204651782 U CN 204651782U CN 201520382424 U CN201520382424 U CN 201520382424U CN 204651782 U CN204651782 U CN 204651782U
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CN
China
Prior art keywords
connection device
rope
middle phase
guide
phase connection
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CN201520382424.9U
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Chinese (zh)
Inventor
夏拥军
邹玉英
郝玉靖
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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State Grid Corp of China SGCC
China Electric Power Research Institute Co Ltd CEPRI
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Priority to CN201520382424.9U priority Critical patent/CN204651782U/en
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Publication of CN204651782U publication Critical patent/CN204651782U/en
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Abstract

The utility model provides phase connection device in one, and in this, phase connection device is arranged on steel tower cross-arm top, for connecting guide wire rope and preset guide rope; Guide wire rope is tracted by helicopter, preset guide rope is arranged in the middle phase releasing pulley bottom steel tower cross-arm, its improvements are, middle phase connection device comprises the wiring mechanism that is connected with preset guide rope end of incoming cables and preset guide rope leading-out terminal respectively and picks up mechanism, wiring mechanism, pick up mechanism and middle phase releasing pulley and be arranged in same base steel tower and go up mutually, guide wire end head is connected as one by wiring mechanism and preset guide rope end of incoming cables.Compared with the prior art, the middle phase connection device that the utility model provides, need not stop for a long time through the coaster spreading guiding steel wire rope closing iron tower structure at helicopter, not only can rapid removal guide wire rope one end pick up the other end and continue flight, and guide wire rope can be realized be connected with preset the quick of guide rope two ends in middle phase releasing pulley.

Description

Phase connection device in one
Technical field
The utility model relates to a kind of automatics for phase coaster in helicopter spreading guiding steel wire penetrating, specifically relates to phase connection device in one.
Background technology
Transmission of electricity is after boosting with the electric energy that generator sends by transformer, then realizes through control appliance access transmission lines such as circuit breakers.By version, transmission line is divided into overhead transmission line and cable line.The formation such as overhead transmission line route overhead line structures, wire, insulator, line hardware, bracing wire, pole and tower foundation, earthing device, is erected on ground.
The middle phase releasing pulley of V-type, wine glass-shaped, cathead steel tower, is in the steel construction of face closure under steel tower cross-arm.For to spreading guiding rope in this releasing pulley, and then spreading conducting wire, when not cutting off guide rope, the first step first unfolds the one-level guide rope of a diameter 2-4mm with aircraft, then leads with it and puts second level 3-5 root guide rope.Often leading and be put into a Ji Ta, need manually to climb up high tower, by being parked in the guide rope termination on the adapter plate of cross-arm side wait, moving on in the releasing pulley below cross-arm, fag end, through after coaster, is hung back adapter plate above the cross-arm of opposite side.Afterwards, one-level guide rope just can affect adapter plate to go to next Ji Ta with secondary guide rope.Because threading is artificial work high above the ground, not only threading is consuming time, and secondary guide rope also can only adopt the nylon rope of 10-12mm, also will draw seizing wire through the nylon rope of 2-3 time, seizing wire draws switching of coarse-wire rope, could start to draw wire.
Because middle phase coaster is positioned at the steel construction of face closure under steel tower cross-arm, and distance cross-arm is very near, and aircraft can not fly over from the narrow space between coaster and cross-arm.Therefore, automatic inlet wire cannot be realized for phase coaster in V-type, wine glass-shaped, cathead steel tower.
At present, the mode of helicopter unwrapping wire is adopted also to be in the exploratory experiment stage.The limit phase coaster of inlet wire automatically can have preproduction and come out, and through the test of " dry font " steel tower flight unwrapping wire.This sections tower does not have middle phase, is the tower that all coasters are all suspended on both sides.But, for the automatic inlet wire having phase releasing pulley in the V-type of middle phase, wine glass-shaped, cathead steel tower, also there is no desirable implementation method.
Therefore, need for phase unwrapping wire feature in iron tower of power transmission line, provide a kind of technical scheme by phase coaster in helicopter spreading guiding steel wire penetrating to solve Problems existing in iron tower of power transmission line engineering construction.
Utility model content
In order to solve the problem, the utility model provides phase connection device in one, need not stop for a long time through the coaster spreading guiding steel wire rope closing iron tower structure at helicopter, not only can rapid removal guide wire rope one end pick up the other end and continue flight, and guide wire rope can be realized be connected with preset the quick of guide rope two ends in middle phase releasing pulley.
The purpose of this utility model adopts following technical proposals to realize:
Phase connection device in the one that the utility model provides, described middle phase connection device is arranged on steel tower cross-arm 7 top, for connecting guide wire rope 2 and preset guide rope 9; Described guide wire rope 2 is tracted by helicopter 1, and described preset guide rope 9 is arranged in the middle phase releasing pulley 8 bottom described steel tower cross-arm 7; Its improvements are: described middle phase connection device comprises the wiring mechanism 3 that is connected with preset guide rope end of incoming cables 4 and preset guide rope leading-out terminal 5 respectively and picks up mechanism 6, described wiring mechanism 3, pick up mechanism 6 and middle phase releasing pulley 8 and be arranged in same base steel tower and go up mutually, guide wire end head 368 is connected as one with preset guide rope end of incoming cables 4 by described wiring mechanism 3.
First optimal technical scheme provided by the invention is, described guide wire rope 2 and preset guide rope 9 are the anti-steel wire rope of turning round of four directions or six sides; Described guide wire end head 368, guide rope end of incoming cables 4 and preset guide rope leading-out terminal 5 are the cylinder that filling lead or filling zinc are made.
Second optimal technical scheme provided by the invention is, described wiring mechanism 3 comprises guide plate 31, steel wire rope end head wiring mechanism 36 and supporting mechanism 37; Described guide plate 31 and supporting mechanism 37 are arranged on link 32, and described steel wire rope end head wiring mechanism 36 is arranged on supporting mechanism 37 top; Main body 365 cross section of described steel wire rope end head wiring mechanism 36 is U-shaped, the two side of described main body 365 one end arranges pawl axis 362 along its axis direction correspondence, described pawl axis 362 arranges ratchet 363, described main body 365 other end its axis direction vertical arranges screw 366, described main body 365 two ends arrange shrouding 361 respectively, arrange torsion spring 364 between described pawl axis 362 and ratchet 363, described screw 366 arranges screw cover 367.
3rd optimal technical scheme provided by the invention is, main body 365 inside be positioned at below described ratchet 363 arranges guide wire end head 368; Main body 365 inside be positioned at below described screw 366 arranges preset guide rope end of incoming cables 4.
4th optimal technical scheme provided by the invention is, described guide plate 31 cross section is V-arrangement, top signalization reflector 34, bottom signalization switch 35.
5th optimal technical scheme provided by the invention is, arranges the bracing frame 33 be connected with steel tower cross-arm 7 and column 38 respectively bottom horizontally disposed described link 32 two ends.
6th optimal technical scheme provided by the invention is, described supporting mechanism 37 cross section Wei “ Door " type; comprise along the symmetrically arranged supporter 371 of its axis direction; described supporter 371 top correspondence arranges the horizontal through hole of its axis direction vertical, described through hole sets gradually steel ball 374, Compress Spring 373 and spring adjusting screw 372 from inside to outside.
7th optimal technical scheme provided by the invention is, the described mechanism 6 that picks up is included in grasping mechanism 65 and block 66 that support plate 63 is arranged, the cross section of described grasping mechanism 65 and block 66 is U-shaped, preset guide rope leading-out terminal 5 is set in described U-lag, described support plate 63 is horizontally set on the top of connecting plate 62 one end by supporting bracket 64, the bottom of described connecting plate 62 other end arranges the fixed head 61 be connected with steel tower cross-arm 7.
8th optimal technical scheme provided by the invention is, described middle phase releasing pulley 8 is provided with wire jumping prevention mechanism 81, described wire jumping prevention mechanism 81 comprises axle bed 811 and divider 812, described axle bed 811 is separately positioned on the yoke plate 82 above the intermediate pulley both sides being arranged in phase releasing pulley 8, and described axle bed 811 is connected by bearing pin 813 with divider 812.
9th optimal technical scheme provided by the invention is, horizontally disposed described bearing pin 813 is vertical with the trend of preset guide rope 9.
Compared with immediate prior art, the utility model reaches following beneficial effect:
1, the middle phase connection device that provides of the utility model, need not stop for a long time through the coaster spreading guiding steel wire rope closing iron tower structure at helicopter, not only can rapid removal guide wire rope one end pick up the other end and continue flight, and guide wire rope can be realized be connected with preset the quick of guide rope two ends in middle phase releasing pulley.
2, the middle phase connection device that provides of the utility model, achieves being connected fast and automatically of guide wire end head and preset guide rope end of incoming cables by steel wire rope end head wiring mechanism.
3, the middle phase connection device that provides of the utility model, the disengaging being achieved guide wire rope and the preset guide rope be connected by supporting mechanism is supported, is connected into guide rope.
4, the middle phase connection device that provides of the utility model, by arranging wire jumping prevention mechanism in middle phase releasing pulley, avoiding the breast wheel of guide wire rope from coaster in helicopter distraction procedure and jumping out.
5, the middle phase connection device that provides of the utility model, eliminates artificial work high above the ground when helicopter is arrived in by plane, decreases the number of times that guide rope cord leads hawser, drastically increase efficiency of construction and operational security.
Accompanying drawing explanation
Fig. 1: the front elevational schematic of the middle phase connection device course of work that the utility model provides;
Fig. 2: schematic diagram is looked on a left side for the middle phase connection device course of work that the utility model provides;
Fig. 3: the wiring mechanism that the utility model provides face structural representation;
Fig. 4: the right TV structure schematic diagram of the wiring mechanism that the utility model provides;
Fig. 5: the steel wire rope end head wiring mechanism that the utility model provides face structural representation;
Fig. 6: the right TV structure schematic diagram of the steel wire rope end head wiring mechanism that the utility model provides;
Fig. 7: the side-looking A-A sectional structure schematic diagram of the steel wire rope end head wiring mechanism that the utility model provides;
Fig. 8: the guide wire end head that the utility model provides face structural representation;
Fig. 9: the left TV structure schematic diagram of the guide wire end head that the utility model provides;
Figure 10: the supporting mechanism that the utility model provides face structural representation;
Figure 11: the side-looking B-B sectional structure schematic diagram of the supporting mechanism that the utility model provides;
Figure 12: the steel wire rope end head wiring mechanism that the utility model provides and the front elevational schematic that supporting mechanism is installed together;
Figure 13: the steel wire rope end head wiring mechanism that the utility model provides and the diagrammatic side-view cross-sectional schematic diagram that supporting mechanism is installed together;
Figure 14: what the utility model provided pick up mechanism faces structural representation;
Figure 15: the left TV structure schematic diagram of what the utility model provided pick up mechanism;
Figure 16: the middle phase connection device that the utility model provides pick up the front elevational schematic that mechanism and wiring mechanism be set together;
Figure 17: schematic diagram is looked on the left side that mechanism and wiring mechanism be set together of picking up of the middle phase connection device that the utility model provides;
Figure 18: the structural representation of the middle phase releasing pulley that the utility model provides;
Wherein: 1, helicopter; 2, guide wire rope; 3, wiring mechanism; 4, preset guide rope end of incoming cables; 5, preset guide rope leading-out terminal; 6, mechanism is picked up; 7, steel tower cross-arm; 8, middle phase releasing pulley; 9, preset guide rope; 10, the helicopter picking up mechanism position is in; 31, guide plate; 32, link; 33, bracing frame; 34, signal projector; 35, signaling switch; 36, steel wire rope end head wiring mechanism; 37, supporting mechanism; 38, column; 61, fixed head; 62, connecting plate; 63, support plate; 64, supporting bracket; 65, grasping mechanism; 66, block; 361, shrouding; 362, pawl axis; 363, ratchet; 364, torsion spring; 365, main body; 366, screw; 367, screw cover; 368, guide wire end head; 371, supporter; 372, spring adjusting screw; 373, Compress Spring; 374, steel ball; 81, wire jumping prevention mechanism; 82, yoke plate; 811, axle bed; 812, divider; 813, bearing pin.
Embodiment
For enabling above-mentioned purpose of the present utility model, feature and advantage become apparent more, are described in further detail embodiment of the present utility model below in conjunction with accompanying drawing.
The middle phase connection device that the present embodiment provides, as shown in Fig. 1 to 2, middle phase connection device comprises the wiring mechanism 3 that is arranged on steel tower cross-arm 7 top and picks up mechanism 6, wiring mechanism 3, pick up mechanism 6 and the phase releasing pulley 8 be arranged in bottom steel tower cross-arm 7 to be arranged in same base steel tower and to go up mutually, in middle phase releasing pulley 8, preset guide rope 9 is set, preset guide rope end of incoming cables 4 and preset guide rope leading-out terminal 5 are respectively with wiring mechanism 3 with pick up mechanism 6 and be connected, spreading guiding steel wire rope 2 when wiring mechanism 3 arrived in by plane by helicopter 1, guide wire rope 2 is connected as one by wiring mechanism 3 and preset guide rope end of incoming cables 4, after helicopter 1 unloads guide wire rope 2, need not be paused wait, directly fly to steel tower cross-arm 7 outgoing line side, be in the helicopter 10 picking up mechanism position and pick up the preset guide rope leading-out terminal 5 being positioned at and picking up mechanism 6, continue to fly to next Ji Ta.Now, this preset guide rope 9 has accessed helicopter 1 and has drawn in the guide wire rope 2 come, and installs wire jumping prevention mechanism 81 guide wire rope 2 can be avoided to jump out from the breast wheel of coaster in helicopter 1 distraction procedure at middle phase releasing pulley 8.
Wherein, as shown in Figs. 3-4, wiring mechanism 3 comprises guide plate 31, steel wire rope end head wiring mechanism 36 and supporting mechanism 37; Guide plate 31 and supporting mechanism 37 are arranged on link 32, and steel wire rope end head wiring mechanism 36 is arranged on supporting mechanism 37 top; Guide plate 31 cross section is V-arrangement, top signalization reflector 34, bottom signalization switch 35, and signaling switch 35 can be arranged on guide plate 31 bottom front (on axis), also all can arrange in its front, side; Bottom horizontally disposed link 32 two ends, the bracing frame 33 be connected with steel tower cross-arm 7 and column 38 are set respectively.Helicopter 1 draws guide wire rope 2 when arriving above wiring mechanism 3, guide wire rope 2 is slowly fallen along guide plate 31, when guide wire end head 368 triggers the signaling switch 35 bottom guide plate 31, signal projector 34 sends the signal such as sound, light, after pilot receives signal, after unloading the guide wire rope 2 of traction, continue flight.
Wherein, as shown in Figs. 5 to 7, main body 365 cross section of steel wire rope end head wiring mechanism 36 is U-shaped, the two side of main body 365 one end arranges pawl axis 362 along its axis direction correspondence, pawl axis 362 arranges ratchet 363, main body 365 other end its axis direction vertical arranges screw 366, and main body 365 inside be positioned at below ratchet 363 arranges guide wire end head 368; Main body 365 inside be positioned at below described screw 366 arranges preset guide rope end of incoming cables 4; Main body 365 two ends arrange shrouding 361 respectively, arrange torsion spring 364 between pawl axis 362 and ratchet 363, and screw 366 arranges screw cover 367.When helicopter 1 unloads the guide wire rope 2 of traction, guide wire end head 368 depresses ratchet 363, fall in U-shaped main body 365, ratchet 363 rebounds under the effect of torsion spring 364, prevents the guide wire end head 368 when steel wire rope end head wiring mechanism 36 reverses therefrom to drop out.Screw 366 and screw cover 367 have blocked dropping out of prepositioned preset guide rope end of incoming cables 4, and can increase the rigidity of hatch frame.Shrouding 361 prevents guide wire end head 368 and preset guide rope end of incoming cables 4 to deviate from from two ends.Two fag ends are connected as a single entity by steel wire rope end head wiring mechanism 36 fast, and can by the upper space of coaster breast wheel.
Wherein, as shown in Figure 8-9, guide wire rope 2 and preset guide rope 9 are the anti-steel wire rope of turning round of four directions or six sides, and guide wire end head 368, guide rope end of incoming cables 4 and preset guide rope leading-out terminal 5 are the cylinder that filling lead or filling zinc etc. are made.
Wherein, as shown in Figure 10 to 13, supporting mechanism 37 cross section Wei “ Door " type; comprise along the symmetrically arranged supporter 371 of its axis direction; supporter 371 top correspondence arranges the horizontal through hole of its axis direction vertical, through hole sets gradually steel ball 374, Compress Spring 373 and spring adjusting screw 372 from inside to outside.As long as select suitable Compress Spring 373 and adjust elastic force by spring adjusting screw 372, just can ensure that steel ball 374 supports the steel wire rope end head wiring mechanism 36 only installing preset guide rope end of incoming cables 4; After falling into again guide wire end head 368 in steel wire rope end head wiring mechanism 36, steel ball 374 is stressed, and Compress Spring 373 shrinks, and steel wire rope end head wiring mechanism 36 falls in the middle of supporter 371, is connected into guide wire rope 2 subsequently, and is drawn by helicopter 1 together.
Wherein, as shown in Figure 14 to 15, pick up mechanism 6 and be included in grasping mechanism 65 and block 66 that support plate 63 is arranged, the cross section of grasping mechanism 65 and block 66 is U-shaped, arranges preset guide rope leading-out terminal 5 in U-lag; Support plate 63 is horizontally set on the top of connecting plate 62 one end by supporting bracket 64, and the bottom of connecting plate 62 other end arranges the fixed head 61 be connected with steel tower cross-arm 7.When helicopter 1 flies to time herein, pick up the preset guide rope leading-out terminal 5 in support plate 63, with the guide rope be connected, fly to next base steel tower.
Wherein, as shown in Figure 16 to 17, pick up the side that mechanism 6 also can need to be arranged on according to actual conditions wiring mechanism 3, namely helicopter 1 picks up preset guide rope leading-out terminal 5 after unloading the guide wire rope 2 of traction, and flies to next Ji Ta.Now the length of preset guide rope 9 needs to lengthen, until can leave surplus around steel tower cross-arm 7 one weeks
Wherein, as shown in figure 18, the wire jumping prevention mechanism 81 of middle phase releasing pulley 8 comprises axle bed 811 and divider 812, and axle bed 811 is welded on the yoke plate 82 above the intermediate pulley both sides being arranged in phase releasing pulley 8 respectively, and axle bed 811 is connected by bearing pin 813 with divider 812; Horizontally disposed bearing pin 813 is vertical with the trend of preset guide rope 9, prevents guide wire rope 2 from jumping out from breast wheel in helicopter 1 distraction procedure.Because divider 812 and bearing pin 813 are hinged, make divider 812 keep sagging under Gravitative Loads, divider 812 is by horizontal just like counterweight during jack-up.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; those of ordinary skill in the field are to be understood that; can modify to embodiment of the present utility model with reference to above-described embodiment or equivalent to replace, these do not depart from any amendment of the utility model spirit and scope or equivalently to replace within the claims that all awaits the reply in application.

Claims (10)

1. a phase connection device in, described middle phase connection device is arranged on steel tower cross-arm (7) top, for connecting guide wire rope (2) and preset guide rope (9); Described guide wire rope (2) is tracted by helicopter (1), and described preset guide rope (9) is arranged in the middle phase releasing pulley (8) of described steel tower cross-arm (7) bottom;
It is characterized in that: described middle phase connection device comprises the wiring mechanism (3) that is connected with preset guide rope end of incoming cables (4) and preset guide rope leading-out terminal (5) respectively and picks up mechanism (6), described wiring mechanism (3), pick up mechanism (6) and middle phase releasing pulley (8) and be arranged in same base steel tower and go up mutually, guide wire end head (368) is connected as one by described wiring mechanism (3) and preset guide rope end of incoming cables (4).
2. middle phase connection device as claimed in claim 1, is characterized in that, described guide wire rope (2) and preset guide rope (9) are the anti-steel wire ropes of turning round of four directions or six sides; Described guide wire end head (368), guide rope end of incoming cables (4) and preset guide rope leading-out terminal (5) are the cylinder that filling lead or filling zinc are made.
3. middle phase connection device as claimed in claim 2, it is characterized in that, described wiring mechanism (3) comprises guide plate (31), steel wire rope end head wiring mechanism (36) and supporting mechanism (37), described guide plate (31) and supporting mechanism (37) are arranged on link (32), and described steel wire rope end head wiring mechanism (36) is arranged on supporting mechanism (37) top, main body (365) cross section of described steel wire rope end head wiring mechanism (36) is U-shaped, the two side of described main body (365) one end arranges pawl axis (362) along its axis direction correspondence, described pawl axis (362) arranges ratchet (363), described main body (365) other end its axis direction vertical arranges screw (366), described main body (365) two ends arrange shrouding (361) respectively, torsion spring (364) is set between described pawl axis (362) and ratchet (363), described screw (366) arranges screw cover (367).
4. middle phase connection device as claimed in claim 3, is characterized in that, main body (365) inside being positioned at described ratchet (363) below arranges guide wire end head (368); Main body (365) inside being positioned at described screw (366) below arranges preset guide rope end of incoming cables (4).
5. middle phase connection device as claimed in claim 4, it is characterized in that, described guide plate (31) cross section is V-arrangement, top signalization reflector (34), bottom signalization switch (35).
6. middle phase connection device as claimed in claim 5, is characterized in that, arranges the bracing frame (33) be connected with steel tower cross-arm (7) and column (38) respectively bottom horizontally disposed described link (32) two ends.
7. middle phase connection device as claimed in claim 6, it is characterized in that, described supporting mechanism (37) cross section Wei “ Door " type; comprise along the symmetrically arranged supporter of its axis direction (371); described supporter (371) top correspondence arranges the horizontal through hole of its axis direction vertical, described through hole sets gradually steel ball (374), Compress Spring (373) and spring adjusting screw (372) from inside to outside.
8. middle phase connection device as claimed in claim 2, it is characterized in that, the described mechanism (6) that picks up is included in grasping mechanism (65) and block (66) that support plate (63) is arranged, the cross section of described grasping mechanism (65) and block (66) is U-shaped, preset guide rope leading-out terminal (5) is set in described U-lag, described support plate (63) is horizontally set on the top of connecting plate (62) one end by supporting bracket (64), the bottom of described connecting plate (62) other end arranges the fixed head (61) be connected with steel tower cross-arm (7).
9. middle phase connection device as claimed in claim 1, it is characterized in that, described middle phase releasing pulley (8) is provided with wire jumping prevention mechanism (81), described wire jumping prevention mechanism (81) comprises axle bed (811) and divider (812), described axle bed (811) is separately positioned on the yoke plate (82) above the intermediate pulley both sides being arranged in phase releasing pulley (8), and described axle bed (811) is connected by bearing pin (813) with divider (812).
10. middle phase connection device as claimed in claim 9, it is characterized in that, horizontally disposed described bearing pin (813) is vertical with the trend of preset guide rope (9).
CN201520382424.9U 2015-06-04 2015-06-04 Phase connection device in one Active CN204651782U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520382424.9U CN204651782U (en) 2015-06-04 2015-06-04 Phase connection device in one

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520382424.9U CN204651782U (en) 2015-06-04 2015-06-04 Phase connection device in one

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104852330A (en) * 2015-06-04 2015-08-19 中国电力科学研究院 Middle-phase wire connector
CN110289571A (en) * 2019-04-01 2019-09-27 中国电力科学研究院有限公司 A kind of releasing pulley and application method for unmanned plane spreading guiding rope
CN113270817A (en) * 2021-06-16 2021-08-17 常熟市电力机具有限公司 Pulley structure for stringing unmanned aerial vehicle with guiding rope side entering function

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104852330A (en) * 2015-06-04 2015-08-19 中国电力科学研究院 Middle-phase wire connector
CN110289571A (en) * 2019-04-01 2019-09-27 中国电力科学研究院有限公司 A kind of releasing pulley and application method for unmanned plane spreading guiding rope
CN110289571B (en) * 2019-04-01 2023-09-08 中国电力科学研究院有限公司 Paying-off pulley for spreading and paying-off guide rope of unmanned aerial vehicle and use method
CN113270817A (en) * 2021-06-16 2021-08-17 常熟市电力机具有限公司 Pulley structure for stringing unmanned aerial vehicle with guiding rope side entering function

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