An unmanned aerial vehicle for guiding a guide rope to pass through a pulley device

By designing the drone deployment guide rope through the pulley device, the guide horns and guide rope connection bend plates provide flight direction, solving the collision risks and manual assistance needs of the drone during the pulley process, and improving construction efficiency and stability.

CN115459139BActive Publication Date: 2025-07-22HENAN POWER TRANSMISSION & TRANSFORMATION CONSTR CO LTD +2
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Patent Information

Application Number
CN202211025335.X
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-08-25
Publication Date
2025-07-22
Estimated Expiration
2042-08-25

AI Technical Summary

Technical Problem

Existing drones lack directional guidance during the release of the rig, which is prone to collision with the rig, and requires manual high-altitude assistance, resulting in inefficiency.

Method used

A drone deployment guide rope crossing tackle device is designed, including the first and second structural frames and three sets of crossing mechanisms, and uses guide horns and guide rope connection bend plates to provide flight direction reference, and connect with the drone through the connecting component to ensure device stability and center of gravity balance.

Benefits of technology

Effectively prevent drones from colliding with tackles, reduce the demand for artificial high-altitude assistance, and improve construction efficiency and device stability.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention discloses a device for a drone to deploy a guiding rope through a pulley, which comprises a drone, a first structural frame and a second structural frame. There are three sets of crossing mechanisms arranged between the first structural frame and the second structural frame. A connecting component is provided at the bottom of the drone, and it is connected to the first structural frame through the connecting component. A first guiding mechanism is provided at the front end of the first structural frame, a second guiding mechanism is provided at the front end of the second structural frame, and a guiding rope connecting mechanism is provided at the rear end of the second structural frame. Through the settings of the first structural frame, the second structural frame and the crossing mechanisms, the present invention prevents the drone from colliding with the drone's straight-through frame when drilling through the wire-pulling pulley, and also prevents the problem that the frame of the wire-pulling pulley is easily stuck between the rotor structures of the drone. At the same time, the whole device does not require manual high-altitude assistance, thereby reducing the workload of construction personnel and improving work efficiency.
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Description

Technical Field

[0001] The present invention relates to the technical field of pulling sheaves, and particularly relates to a device for a drone to lay a guiding rope through a sheave. Background Art

[0002] In the construction of overhead conductor pulling, after the construction section, the tension field is selected, and the sheave is suspended, it is necessary to suspend a guiding rope on the sheave. Generally, the guiding rope is segmented at 800m - 1200m, with plug-in end loops made at both ends, and coiled on a special guiding rope reel. The primary guiding rope is generally laid in the air, that is, using an aircraft or other equipment (launcher, etc.) to lay the primary guiding rope. According to the capabilities of the aircraft or launcher, the line is divided into laying sections for laying. The primary guiding rope is gradually lowered to the top of the tower, and then manually moved and transitioned into the pulling sheave of the required phase (pole). Each section is connected to make it continuously connected within the construction section. Currently, most construction units use drones to suspend the guiding rope, use the drones to pull the guiding rope to near the sheave, and manually open the side plate of the sheave to put the guiding rope into the sheave. However, when using this method, the efficiency is slow, and manual assistance on the tower is required. At the same time, the device cannot accurately guide the flight direction of the drone during the crossing process, and the center of gravity of one end of the guiding rope installed on the device is not stable enough.

[0003] In the Chinese patent document CN207442331U, "A direct-through type pulling sheave for primary guiding rope in the stage of laying primary guiding rope", although this solution uses the pulling sheave to lay the primary guiding rope without the cooperation of high-altitude personnel, saving manpower and avoiding potential safety hazards. However, due to the limited space of the drone direct-through frame in the solution, if not careful, the drone will collide with the drone direct-through frame when drilling through the pulling sheave. Moreover, the frame of the pulling sheave is easily stuck between the rotor structures of the drone, and there is still no reference when the drone drills through the pulling sheave, and the flight direction of the drone cannot be accurately controlled, which is prone to collisions, damaging the propellers or the fuselage, etc., causing economic losses. Summary of the Invention

[0004] In view of the problems existing in the prior art, the present invention provides a device for a drone to lay a guiding rope through a sheave, which can solve the problem of no direction guidance for the drone during the process of crossing the pulling sheave, reduce the risk of drone collision, and at the same time increase the overall stability of the device during use, and does not require the cooperation of high-altitude personnel, reducing labor costs and increasing work efficiency.

[0005] The technical solution adopted to achieve the above object is:

[0006] An unmanned aerial vehicle (UAV) device for guiding a guide rope through a pulley, comprising a UAV, a first structural frame and a second structural frame. There are three sets of crossing mechanisms arranged between the first structural frame and the second structural frame. A connecting component is provided at the bottom of the UAV, and it is connected to the first structural frame through the connecting component. A first guiding mechanism is provided at the front end of the first structural frame, a second guiding mechanism is provided at the front end of the second structural frame, and a guide rope connecting mechanism is provided at the rear end of the second structural frame.

[0007] Further, the crossing mechanism includes a first reset rod, a second reset rod and a limiting component. One end of the first reset rod is rotatably arranged inside the first structural frame, and the other end is located inside the second structural frame. A first reset mechanism is provided at one end of the first reset rod located in the first structural frame, and the other end of the first reset mechanism is located on the first structural frame, used for resetting and rebounding the first reset rod. The second reset rod is rotatably arranged on the second structural frame and has no contact with the first structural frame. A second reset mechanism is provided at one end of the second reset rod close to the second structural frame, and the other end of the second reset mechanism is arranged on the second structural frame. A dial block is rotatably connected to the middle part of the second reset rod. A chute is provided on the dial block. The limiting component is arranged on the second structural frame and limits the first reset rod. The limiting end of the limiting component is slidably connected with the chute. The dial block can move along with the second reset rod, so that the limiting end of the limiting component moves relative to the chute.

[0008] Further, the connecting component includes a connecting rod fixedly arranged at the bottom of the UAV. The other end of the connecting rod is fixedly connected with a connecting soft rope, and the connection part is the middle part of the connecting soft rope. The two ends of the connecting soft rope are respectively fixedly connected with the two ends of the first structural frame.

[0009] Further, both the first guiding mechanism and the second guiding mechanism are guiding horns. The guide rope connecting mechanism is a guide rope connecting bent plate, and the other end of the guide rope connecting mechanism is connected with a guide rope.

[0010] Further, the limiting component includes a U-shaped baffle and a pin. The U-shaped baffle is arranged on the second structural frame. The pin is slidably arranged vertically inside the U-shaped baffle, and the bottom end of the pin is slidably connected with the chute on the dial block. A pressing plate is fixedly arranged on the pin, and the pressing plate is located on the dial block. A compression spring is fixedly connected between the pressing plate and the top plate of the U-shaped baffle, and the compression spring is sleeved on the outer surface of the pin.

[0011] Further, there is a bend between the upper surface of the dial block close to the first reset rod and the upper surface close to the second reset rod, and the upper surface close to the first reset rod is lower than the upper surface close to the second reset rod. The height difference at the bend of the dial block is greater than the thickness of the first reset rod.

[0012] Further, a limiting groove is provided at one end of the second structural frame for the first reset rod, and the lower end of the insertion pin is inserted into the limiting groove. A slope is provided on the first reset rod on one side of the limiting groove and close to the second reset rod, and the slope cooperates with the insertion pin.

[0013] Further, the first reset rod is L-shaped, with the long side of the first reset rod located between the first structural frame and the second structural frame, and the short side of the first reset rod located outside the first structural frame.

[0014] Further, the first reset mechanism includes a first upright post and a first reset spring. There are two first upright posts in total, which are respectively located on the short side of the first reset rod and on the first structural frame, and the first reset spring is fixedly connected between the two first upright posts.

[0015] Further, the second reset mechanism includes a second upright post and a second reset spring. There are two second upright posts in total, which are respectively located on one end of the second reset rod close to the second structural frame and on the second structural frame, and the second reset spring is fixedly connected between the two second upright posts.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. Through the settings of the first structural frame, the second structural frame and the traversing mechanism, and by respectively providing a first guiding horn and a second guiding horn at the front ends of the first structural frame and the second structural frame, the device of the present invention can provide a reference in the flight direction when the unmanned aerial vehicle drives the device to move. By driving the device to pass through from the side rod position of the wire-pulling pulley by the unmanned aerial vehicle, it prevents the problem that the unmanned aerial vehicle will collide with the straight-through frame of the unmanned aerial vehicle when drilling through the wire-pulling pulley, and the frame of the wire-pulling pulley is easily stuck between the rotor structures of the unmanned aerial vehicle. At the same time, the whole device does not require manual high-altitude assistance, thereby reducing the workload of construction personnel and improving work efficiency.

[0018] 2. Through the settings of the three groups of traversing mechanisms, when one group of traversing structures passes through the side rod of the pulley, the other two groups of traversing mechanisms can still ensure the stability of the whole device during the working process.

[0019] 3. A guiding rope connecting bent plate is provided at the rear end of the second structural frame of the device of the present invention. The guiding rope connecting bent plate can not only play the role of connecting the guiding rope, but also adjust the center of gravity of the whole device, making the overall structure more stable and reliable. Description of the Drawings

[0020] Figure 1 It is a schematic diagram of the initial state of the device of the present invention;

[0021] Figure 2Schematic diagram of the state where the first traversing mechanism in the device of the present invention passes through the side rod of the pulley;

[0022] Figure 3 Schematic diagram of the state where the second traversing mechanism in the device of the present invention is about to pass through the side rod of the pulley;

[0023] Figure 4 Schematic diagram of the state where the device of the present invention completely passes through the side rod of the pulley;

[0024] Figure 5 Stereogram of the structure of the device of the present invention;

[0025] Figure 6 Side view of the structure of the device of the present invention;

[0026] Figure 7 For the present invention Figure 5 Enlarged schematic diagram of part A in;

[0027] Figure 8 For the present invention Figure 5 Enlarged schematic diagram of part B in;

[0028] Figure 9 For the present invention Figure 6 Enlarged schematic diagram of part C in;

[0029] Figure 10 Schematic diagram of the structure of the first reset rod in the present invention.

[0030] Wherein, 1 - first structural frame, 2 - second structural frame, 3 - traversing mechanism, 4 - unmanned aerial vehicle, 5 - connecting rod, 6 - first guiding horn, 7 - second guiding horn, 8 - guiding rope connecting bent plate, 9 - first reset rod, 10 - second reset rod, 11 - first reset mechanism, 12 - second reset mechanism, 13 - dial block, 14 - sliding groove, 15 - limiting component, 16 - U-shaped baffle, 17 - pin, 18 - pressing plate, 19 - compression spring, 20 - limiting groove, 21 - slope, 22 - connecting soft rope.

[0031] The attached drawings are only for illustrative purposes and should not be construed as a limitation of this patent; for better illustrating this embodiment, some components in the attached drawings are omitted, enlarged or reduced, and do not represent the dimensions of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the attached drawings may be omitted. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the attached drawings in the embodiments of the present invention.

[0033] Such as Figure 1-10As shown in the figure, this embodiment discloses a device for a drone to deploy a guiding rope through a pulley, which includes a drone 4, a first structural frame 1, and a second structural frame 2. There are three sets of traversing mechanisms 3 between the first structural frame 1 and the second structural frame 2. A connecting rod 5 is fixedly installed at the bottom of the drone. The other end of the connecting rod 5 is fixedly provided with a connecting soft rope 22, and the connection between the connecting rod 5 and the connecting soft rope 22 is the middle of the connecting soft rope 22. The two ends of the connecting soft rope 22 are respectively fixedly connected to the two ends of the first structural frame 1. The device composed of the first structural frame 1, the second structural frame 2, and the traversing mechanism 3 can move under the drive of the drone 4.

[0034] As Figure 1-10 shown, a first guiding mechanism is fixedly provided at the front end of the first structural frame 1, and a second guiding mechanism is provided at the front end of the second structural frame 2. In this embodiment, the first guiding mechanism is a first guiding horn 6, and the second guiding mechanism is a second guiding horn 7. When the device does not contact the wire-pulling pulley, under the influence of gravity, the first structural frame 1 is located above the second structural frame 2, and the traversing mechanism 3 is in a vertical state. At this time, with the cooperation of the first guiding horn 6 and the second guiding horn 7, when looking from top to bottom, the two guiding horns form a "person" character, which is convenient for the side rod of the subsequent wire-pulling pulley to better pass through the traversing mechanism 3. A guiding rope connecting mechanism is fixedly provided at the tail end of the second structural frame 2. In this embodiment, the guiding rope connecting mechanism is a guiding rope connecting bent plate 8. The other end of the guiding rope connecting bent plate 8 is connected to a guiding rope. The guiding rope connecting bent plate 8 not only plays a role in connecting the guiding rope, but also can adjust the center of gravity of the entire device body, making the overall device run more smoothly.

[0035] As Figure 5-10As shown in the figure, the traversing mechanism 3 includes a first reset rod 9, a second reset rod 10, and a limiting component 15. One end of the first reset rod 9 is rotatably arranged in the first structural frame 1, and the other end is located in the second structural frame 2. A first reset mechanism 11 is provided at one end of the first reset rod 9 located in the first structural frame 1, and the other end of the first reset mechanism 11 is located on the first structural frame 1 for resetting the first reset rod 9. One end of the second reset rod 10 is rotatably arranged on the second structural frame 2, and the other end of the second reset rod 10 does not contact the first structural frame 1. A second reset mechanism 12 is provided at one end of the second reset rod 10 located on the second structural frame 2, and the other end of the second reset mechanism 12 is arranged on the second structural frame 2 for resetting the second reset rod 10. The limiting component 15 includes a U-shaped baffle 16 and a pin 17. The U-shaped baffle 16 is fixedly arranged on the second structural frame 2 and is located on one side of the first reset rod 9 close to the second structural frame 2. The pin 17 is inserted through the U-shaped baffle 16 from top to bottom, and the bottom end of the pin 17 is inserted into a limiting groove 20 opened at one end of the first reset rod 9 located in the second structural frame 2. A pressing plate 18 is fixedly arranged on the pin 17, and a compression spring 19 is fixedly connected between the upper surface of the pressing plate 18 and the top of the U-shaped baffle 16, and the compression spring 19 is sleeved on the pin 17. A dial block 13 is connected between the second reset rod 10 and the pin 17. One end of the dial block 13 is rotatably connected to the middle of the second reset rod 10. A chute 14 is opened on the dial block 13, and the pin 17 is arranged in the chute 14. The upper surface of the pressing plate 18 is attached to the upper surface of the dial block 13. There is a bend on the upper surface of the dial block 13, and the end close to the pin 17 is lower than the end close to the second reset rod 10. When the second reset rod 10 is forced to rotate backward, it drives the dial block 13 to move, so that the pin 17 and the pressing plate 18 move relative to the dial block 13 along the chute 14. When the pressing plate 18 moves to the bend on the dial block 13, the pressing plate 18 is lifted and drives the pin 17 to move upward, so that the pin 17 withdraws from the limiting groove 20 on the first reset rod 9.

[0036] As Figure 5-10 shown, the first reset rod 9 is L-shaped, and the long side of the first reset rod 9 is located between the first structural frame 1 and the second structural frame 2, and the short side of the first reset rod 9 is located outside the first structural frame 1. A first reset mechanism 11 is provided between the short side of the first reset rod 9 and the first structural frame 1. The first reset mechanism 11 includes first columns respectively located on the first reset rod 9 and the first structural frame 1, and a first reset spring connected between the two first columns for resetting the first reset rod 9 after the side rod of the wire-releasing pulley passes through the first reset rod 9.

[0037] As Figure 5-10As shown, there is no contact between the other end of the second reset rod 10 and the first structural frame 1. A second reset mechanism 12 is provided between the end of the second reset rod 10 close to the second structural frame 2 and the second structural frame 2. The second reset mechanism includes second columns respectively located on the second reset rod 10 and the second structural frame 2, and a second reset spring connected between the two second columns. After the trolley side rod passes through the second reset rod 10, the second reset rod 10 is reset by the second reset spring.

[0038] As Figure 5-10 shown, the first reset rod 9 is located on one side of the limit groove 20 and a slope 21 is provided facing the second reset rod 10. The bottom end of the slope 21 protrudes forward and is flush with the lower surface of the first reset rod 9. After the trolley side rod completely passes through the first reset rod 9, the first reset rod 9 rebounds under the drive of the first reset mechanism 11. When the insertion pin 17 contacts the slope 21, the insertion pin 17 will move upward along the slope 21 under the action of the resilience of the first reset rod 9 until it moves into the limit groove 20, thereby limiting the first reset rod 9 again.

[0039] When the present invention is in use:

[0040] Control the drone 4 to drive the overall device to move. Under the action of gravity, the second structural frame 2 droops downward, causing the first guiding horn 6 and the second guiding horn 7 to respectively deviate to both sides of the side rod of the wire laying pulley. At the same time, control the "person" shape formed by the first guiding horn 6 and the second guiding horn 7 to pass through the side rod of the wire laying pulley, and continue to control the drone 4 to move forward. As the device gradually moves along the side rod of the wire laying pulley, the first structural frame 1 and the second structural frame 2 gradually turn and are located on the same horizontal plane. When the side rod of the wire laying pulley contacts the first set of passing mechanisms 3, the side rod of the wire laying pulley first contacts the second reset rod 10 and drives the second reset rod 10 to rotate. At the same time, while the second reset rod 10 rotates, it drives the slider 13 to move. When the bend on the slider 13 contacts the pressing plate 18, it gradually drives the pressing plate 18 to move upward. The upward movement of the pressing plate 18 drives the insertion pin 17 to move upward accordingly, so that the insertion pin 17 withdraws from the limit groove 20 on the first reset rod 9, releasing the limit on the first reset rod 9. Subsequently, the side rod of the wire laying pulley contacts the first reset rod 9 and drives the first reset rod 9 to rotate. At this time, the first reset rod 9 completely disengages from the contact with the second structural frame 2. Due to the existence of the subsequent two sets of passing mechanisms 3, the overall device remains stable. When the side rod of the wire laying pulley completely passes through the second reset rod 10 but has not completely passed through the first reset rod 9, the second reset rod 10 is driven by the second reset mechanism 12 to perform a reset rebound, and at the same time drives the slider 13 to move, causing the pressing plate 18 to gradually move downward and driving the insertion pin 17 to move downward. After the side rod of the wire laying pulley completely passes through the first reset rod 9, the first reset rod 9 rebounds under the drive of the first reset mechanism 11. When the slope 21 on the first reset rod 9 contacts the insertion pin 17, the insertion pin 17 moves along the slope 21 under the action of the resilience of the first reset rod 9 until the insertion pin 17 moves into the limit groove 20. At this time, the first reset rod 9 is reset, and the insertion pin 17 completes the limit on the first reset rod 9;

[0041] Subsequently, driven by the drone, the side rod of the wire laying pulley passes through the second set and the third set of passing mechanisms 3 in sequence. When passing through the second set of passing mechanisms 3, the first and third passing mechanisms 3 provide stability for the device. When passing through the third set of passing mechanisms 3, the first and second passing mechanisms 3 provide stability for the device, ensuring that the overall mechanism does not disperse when the device passes through each set of passing mechanisms. When the side rod of the wire laying pulley completely passes through the three sets of passing mechanisms 3, control the drone to drive the overall device to adjust the direction, thereby adjusting the position of the guiding rope on the guiding rope connecting bent plate 8, and completing the work of guiding the guiding rope through the wire laying pulley.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the protected content of the present invention.

[0043] If terms such as "first" and "second" are used in this article to define components, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying the description. Without additional declaration, the above terms have no special meaning.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An unmanned aerial vehicle (UAV) device for guiding a guide rope to pass through a pulley, characterized in that, It includes a drone, a first structural frame and a second structural frame. There are three sets of crossing mechanisms between the first structural frame and the second structural frame. A connection component is provided at the bottom of the drone, and it is connected to the first structural frame through the connection component. A first guiding mechanism is provided at the front end of the first structural frame, a second guiding mechanism is provided at the front end of the second structural frame, and a guiding rope connection mechanism is provided at the rear end of the second structural frame; The crossing mechanism includes a first reset rod, a second reset rod and a limiting component. One end of the first reset rod is rotatably arranged in the first structural frame, and the other end is located in the second structural frame. A first reset mechanism is provided at one end of the first reset rod located in the first structural frame, and the other end of the first reset mechanism is located on the first structural frame for resetting and rebounding the first reset rod. The second reset rod is rotatably arranged on the second structural frame and has no contact with the first structural frame. A second reset mechanism is provided at one end of the second reset rod close to the second structural frame, and the other end of the second reset mechanism is arranged on the second structural frame. A slider is rotatably connected to the middle of the second reset rod. A chute is provided on the slider. The limiting component is arranged on the second structural frame and limits the first reset rod. The limiting end of the limiting component is slidably connected with the chute on the slider. The slider can move along with the second reset rod, so that the limiting end of the limiting component moves relative to the chute; The connection component includes a connecting rod fixedly arranged at the bottom of the drone. The other end of the connecting rod is fixedly connected with a connecting soft rope, and the connection part is the middle of the connecting soft rope. The two ends of the connecting soft rope are respectively fixedly connected with the two ends of the first structural frame; Both the first guiding mechanism and the second guiding mechanism are guiding horns. The guiding rope connection mechanism is a guiding rope connection bent plate, and the other end of the guiding rope connection mechanism is connected with a guiding rope.

2. The device for a drone to deploy a guiding rope through a pulley according to claim 1, wherein, The limiting component includes a U-shaped baffle and a pin. The U-shaped baffle is arranged on the second structural frame. The pin is slidably arranged vertically in the U-shaped baffle, and the bottom end of the pin is slidably connected with the chute on the slider. A pressing plate is fixedly arranged on the pin, and the pressing plate is located on the slider. A compression spring is fixedly connected between the pressing plate and the upper top plate of the U-shaped baffle, and the compression spring is sleeved on the outer surface of the pin.

3. The device for a drone to deploy a guiding rope to pass through a pulley according to claim 2, characterized in that, There is a bend between the upper surface of the slider close to the first reset rod and the upper surface close to the second reset rod, and the upper surface close to the first reset rod is lower than the upper surface close to the second reset rod. The height difference at the bend of the slider is greater than the thickness of the first reset rod.

4. The device for a drone to deploy a guiding rope through a pulley according to claim 3, wherein, A limiting groove is opened at one end of the first reset rod located in the second structural frame. The lower end of the pin is inserted into the limiting groove. A slope is provided on the first reset rod on one side of the limiting groove and close to the second reset rod, and the slope cooperates with the pin.

5. The drone-launched guide rope passing-through pulley device according to claim 4, characterized in that, The first reset rod is L-shaped. The long side of the first reset rod is between the first structural frame and the second structural frame, and the short side of the first reset rod is outside the first structural frame.

6. The device for a drone to deploy a guiding rope through a pulley according to claim 5, wherein The first reset mechanism includes a first upright post and a first reset spring. There are two first upright posts in total, which are respectively located on the short sides of the first reset rod and on the first structural frame, and the first reset spring is fixedly connected between the two first upright posts.

7. The device for a drone to deploy a guiding rope through a pulley according to claim 6, wherein, The second reset mechanism includes a second upright post and a second reset spring. There are two second upright posts in total, which are respectively located at one end of the second reset rod close to the second structural frame and on the second structural frame, and the second reset spring is fixedly connected between the two second upright posts.

Citation Information

Patent Citations

  • Elementary guide rope directly passes through formula unwrapping wire coaster

    CN207442331U

  • Device for unmanned aerial vehicle to unfold guide rope to pass through tackle

    CN218352014U