Self-locking ground line pulley based on unmanned aerial vehicle delivery

Abstract

This invention discloses a self-locking ground wire trolley based on drone deployment, relating to the field of self-locking ground wire trolley technology. The invention includes a gravity-linked locking module whose top is connected to a hook guide module whose bottom is hinged to a load-bearing pulley module. Through gravity torque balance, it achieves lifting unlocking and releasing locking, and includes a limiting structure to restrict its rotational stroke. This invention, through the hook guide module, gravity-linked locking module, and load-bearing pulley module, adapts to drone hoisting operations via the hook guide module. It eliminates the need for manual high-altitude operation; the trolley can be unlocked, locked, and attached / detached solely through the drone's lifting and releasing actions, thus avoiding high-altitude operations by personnel and improving the trolley's adaptability.

Description

Technical Field

[0001] This invention relates to the field of self-locking ground wire pulley technology, specifically a self-locking ground wire pulley based on UAV deployment. Background Technology

[0002] Transmission lines are an important part of the power system. They are exposed to complex outdoor environments for a long time and are prone to problems such as insulator aging, hardware damage, and conductor and ground wire wear. Regular inspection and maintenance work is required. Conductor and ground wire pulleys are core tools in transmission line inspection and stringing construction. They are mainly used to hang on the conductor and ground wire to provide load-bearing and guidance for the working ropes and are key supports for ground pulling and lifting operations.

[0003] Traditional maintenance requires manual climbing of poles or rope ladders to hang pulleys, which poses a risk of falling from heights. Manually carrying equipment up the tower consumes a lot of physical strength and time, and is greatly restricted by terrain. At the same time, ordinary pulleys cannot be adapted to drone operation, lack an automatic locking mechanism, and are prone to derailment in wind or rope swing. Therefore, it is necessary to set up a self-locking ground wire pulley based on drone deployment.

[0004] To address the aforementioned problems, the inventors proposed a self-locking ground wire trolley based on drone deployment to solve these issues. Summary of the Invention

[0005] To address the lack of an automatic locking mechanism in existing conventional pulleys, the present invention aims to provide a self-locking ground wire pulley based on drone deployment.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a self-locking ground wire trolley based on UAV deployment, comprising a hook guide module, a gravity linkage locking module and a load-bearing pulley module connected in sequence, and each module together constitutes an integrated main frame;

[0007] The hook guide module is used to guide the ground wire to slide into the mounting position;

[0008] The top of the gravity linkage locking module is connected to the bottom of the hook guide module, and the bottom of the gravity linkage locking module is hinged to the load-bearing pulley module. Through the balance of gravity torque, the lifting unlocking and releasing locking are realized, and a limiting structure is provided to limit its rotation stroke.

[0009] The load-bearing pulley module includes a deep-groove pulley with closed-loop protection, used to support and guide the working rope;

[0010] The trolley is made of lightweight, high-strength materials and is suitable for the loads of drones and wires.

[0011] Preferably, the hook guide module includes a guide frame and a frame, the guide frame is configured as V-shaped, and the guide frame is fixedly connected to the top of the frame to form a V-shaped guide groove.

[0012] Preferably, the gravity-linked locking module includes a connecting rod and a locking frame, the top end of the connecting rod is fixedly connected to the bottom of the frame, and a roller is rotatably connected to the outer wall of the connecting rod;

[0013] The bottom of the connecting rod is rotatably connected to a locking frame, and the bottom of the locking frame is rotatably connected to a rotating shaft.

[0014] Preferably, the load-bearing pulley module includes a U-shaped frame, the middle side wall of the U-shaped frame is provided with a triangle, the top of the side wall of the triangle is provided with a groove, and the roller is slidably connected to the inner wall of the groove.

[0015] A shaft hole is provided at the bottom of the triangular sidewall, and the locking frame is rotatably connected to the inner wall of the shaft hole via a rotating shaft;

[0016] The top of the U-shaped frame extends into a hook, and the opening width of the hook is 1.5 times the maximum diameter of the cable.

[0017] Preferably, the U-shaped frame is provided with a U-shaped notch, and the top of the locking frame is deflected at the top of the U-shaped notch;

[0018] The limiting structure is composed of arc-shaped protrusions, which are fixedly connected to the outer wall of the U-shaped notch to prevent the lifting ring from rotating excessively and to ensure that the top of the locking frame stays at the sealing position of the U-shaped notch.

[0019] Preferably, one end of the U-shaped frame is provided with an arc-shaped extension plate to facilitate the cable to enter the interior of the U-shaped opening along the arc surface.

[0020] Preferably, a pulley is rotatably connected to the bottom of the U-shaped frame, and a pin is connected between the pulley and the bottom of the U-shaped frame. A groove is provided on the outer wall of the pulley, and the groove is designed as a deep groove waist shape.

[0021] The outer edge of the pulley is flush with the bottom side wall of the U-shaped frame, forming a closed-loop protection.

[0022] Preferably, the roller is made of a self-lubricating copper bushing or a sealed deep groove ball bearing, with a Teflon coating.

[0023] Preferably, the hook guide module, gravity linkage locking module, and load-bearing pulley module are all made of aviation aluminum.

[0024] Preferably, the roller and pin are made of 304 stainless steel or 40Cr alloy steel.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. This invention is designed with a hook guide module, a gravity linkage locking module and a load-bearing pulley module. The hook guide module is adapted to the hoisting operation of drones, eliminating the need for manual high-altitude operation. The trolley can be unlocked, locked and attached / detached simply by the lifting and releasing actions of the drone, thereby avoiding high-altitude operation by workers and improving the adaptability of the trolley.

[0027] 2. The pulley of the present invention adopts a deep groove waist-shaped structure. The outer edge of the pulley is flush with the bottom side wall of the U-shaped frame to form a closed loop protection, which can effectively prevent the rope from jumping out of the groove during operation and avoid operation interruption caused by rope falling off. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0030] Figure 2 This is a schematic diagram of the hook guide module and gravity linkage locking module of the present invention.

[0031] Figure 3 This is a schematic diagram of the load-bearing pulley module of the present invention.

[0032] Figure 4 This is a disassembly diagram of the load-bearing pulley module of the present invention.

[0033] In the diagram: 1. Hook guide module; 11. Guide frame; 12. Frame; 2. Gravity linkage locking module; 21. Connecting rod; 22. Roller; 23. Locking frame; 24. Rotary shaft; 3. Load-bearing pulley module; 31. U-shaped skeleton; 310. Slide groove; 311. Shaft hole; 312. Arc-shaped protrusion; 313. Arc-shaped extension plate; 32. Pulley; 33. Pin. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0035] like Figure 1 - Figure 4 As shown, the present invention provides a self-locking ground wire trolley based on UAV deployment, including a hook guide module 1, a gravity linkage locking module 2 and a load-bearing pulley module 3 connected in sequence, and the modules together constitute an integrated main frame;

[0036] Hook guide module 1 is used to guide the ground wire to slide into the mounting position;

[0037] The top of the gravity linkage locking module 2 is connected to the bottom of the hook guide module 1, and the bottom of the gravity linkage locking module 2 is hinged to the load-bearing pulley module 3. Through the balance of gravity torque, the lifting unlocking and releasing locking are realized, and a limit structure is provided to limit its rotation stroke.

[0038] The load-bearing pulley module 3 includes a deep groove pulley 32 with closed-loop protection, which is used to carry and guide the working rope;

[0039] The trolley is made of lightweight, high-strength materials and is suitable for the loads of drones and wires.

[0040] The hook guide module 1 includes a guide frame 11 and a frame 12. The guide frame 11 is set in a V shape and is fixedly connected to the top of the frame 12 to form a V-shaped guide groove.

[0041] The purpose of this design is to allow the V-shaped guide groove to guide the cable into the mounting point.

[0042] The gravity linkage locking module 2 includes a connecting rod 21 and a locking frame 23. The top end of the connecting rod 21 is fixedly connected to the bottom of the frame 12, and a roller shaft 22 is rotatably connected to the outer wall of the connecting rod 21.

[0043] A locking frame 23 is rotatably connected to the bottom of the connecting rod 21, and a rotating shaft 24 is rotatably connected to the bottom of the locking frame 23;

[0044] The purpose of this setup is that when the drone performs an elevation operation, the connecting rod 21 drives the roller 22 to move upward, and the connecting rod 21 and the locking frame 23 rotate and deflect each other. The top of the locking frame 23 swings towards the roller 22, thereby opening the cable to enter.

[0045] The load-bearing pulley module 3 includes a U-shaped frame 31, with a triangle on the middle side wall of the U-shaped frame 31 and a groove 310 on the top of the triangular side wall. The roller shaft 22 is slidably connected to the inner wall of the groove 310.

[0046] A shaft hole 311 is provided at the bottom of the triangular sidewall, and the locking frame 23 is rotatably connected to the inner wall of the shaft hole 311 via a rotating shaft 24;

[0047] The top of the U-shaped frame 31 extends into a hook, and the opening width of the hook is 1.5 times the maximum diameter of the cable;

[0048] The purpose of this design is that the triangular shape allows the U-shaped frame 31 to form a slanted U-shaped opening, facilitating cable entry and exit. The chute 310 is used to slide and limit the roller 22. When the roller 22 slides on the inner wall of the chute 310, it generates friction. The roller 22 rolls on the outer wall of the connecting rod 21, making the structure easy to move. The opening width of the hook is 1.5 times the maximum diameter of the cable, ensuring that the drone is easy to align.

[0049] The U-shaped frame 31 is provided with a U-shaped notch, and the top of the locking frame 23 is deflected at the top of the U-shaped notch;

[0050] The limiting structure is composed of an arc-shaped protrusion 312, which is fixedly connected to the outer wall of the U-shaped notch to prevent the lifting ring from rotating excessively and to ensure that the top of the locking frame 23 stays at the sealing position of the U-shaped notch.

[0051] The purpose of this design is to allow the U-shaped notch to work in conjunction with the locking bracket 23 to lift the cable inside the U-shaped notch.

[0052] One end of the U-shaped frame 31 is provided with an arc-shaped extension plate 313, which facilitates the cable to enter the interior of the U-shaped notch along the arc surface;

[0053] The purpose of this design is to allow external cables to move in and out easily along the arc of the curved extension plate 313 extending outwards.

[0054] The bottom of the U-shaped frame 31 is rotatably connected to a pulley 32, and a pin 33 is connected between the pulley 32 and the bottom of the U-shaped frame 31. The outer wall of the pulley 32 is provided with a groove, which is a deep groove waist shape.

[0055] The outer edge of the pulley 32 is flush with the bottom side wall of the U-shaped frame 31, forming a closed-loop protection.

[0056] The purpose of this design is to prevent the lifting rope from slipping off the groove with the deep groove waist-shaped pulley 32.

[0057] Roller 22 uses a self-lubricating copper bushing or a sealed deep groove ball bearing, with a Teflon coating.

[0058] The purpose of this design is to ensure that the roller 22 can still rotate flexibly in a light breeze or under slight tilt.

[0059] The hook guide module 1, gravity linkage locking module 2, and load-bearing pulley module 3 are all made of aviation aluminum.

[0060] The purpose of this design is to use aviation-grade aluminum material 2A12-T4. 2A12 is a high-strength hard aluminum with a tensile strength ≥410MPa and a density only 1 / 3 that of steel (approximately 2.78g / cm³). Under the premise of meeting the lifting load of 5kN-10kN, the weight of the whole machine can be controlled between 1.5kg-2.5kg, making it compatible with mainstream industrial drones (such as DJI M300 / M350RTK).

[0061] The roller 22 and pin 33 are made of 304 stainless steel or 40Cr alloy steel to ensure the shear strength of the pulley 32.

[0062] Working principle: Through the cooperation of hook guide module 1, gravity linkage locking module 2, and load-bearing pulley module 3, combined with the principle of gravity torque balance, fully automatic operation with drones is achieved;

[0063] Connect the drone lifting hook to the lifting end of connecting rod 21, and gently lift the drone upwards:

[0064] Combination Figure 1 As shown, state A (lifting and unlocking): When the drone is lifted, the connecting rod 21 drives the roller 22 to move upward, and the connecting rod 21 and the locking frame 23 rotate and deflect. The top of the locking frame 23 swings towards the roller 22, thereby opening and allowing the cable to enter.

[0065] State B (Release Lock): When the UAV performs the release operation, the connecting rod 21 drives the roller 22 to move downward, and the connecting rod 21 and the locking frame 23 rotate and deflect. The top of the locking frame 23 swings in the opposite direction to the roller 22, thereby sealing the hook.

[0066] In addition, based on the above scheme, set the performance indicators for this scheme in practical applications:

[0067] The rated load of this trolley is 500 kg (5 kN), the breaking load is 1500 kg (15 kN), the safety factor is 3:1, and the operating temperature is -20°C to +50°C.

[0068] The performance indicators of the trolley in the above-mentioned scheme, in actual functional testing, are as follows:

[0069] Simulated mounting / unmounting test: Use a drone or simulator to perform 100 mounting / unmounting cycles, with a 100% success rate and no jamming.

[0070] Anti-detachment test: In the locked state, simulate severe cable vibration (amplitude ±20cm, frequency 2Hz) to confirm that the cable cannot break through the locked end.

[0071] In the static load test: 1.5 times the rated load (750kg) was applied and held for 5 minutes, and no permanent deformation was observed after unloading.

[0072] In destructive testing: samples are extracted and loaded until fracture to verify whether the design safety factor has been achieved.

[0073] The design standard for this pulley is in accordance with the provisions of DL / T 875-2016 "Preventive Test Procedures for Power Transmission and Transformation Construction Tools" regarding lifting pulleys. The metal materials conform to GB / T 3190 "Chemical Composition of Wrought Aluminum and Aluminum Alloys".

[0074] The trolley requires safety markings during use: the equipment must be labeled with its rated load, applicable wire diameter range, and a "Do Not Overload" warning.

[0075] All standard mechanical parts used in this invention can be purchased commercially, and irregularly shaped parts can be custom-made according to the description and drawings. The specific mechanical connection methods of each part can adopt conventional methods such as bolts, rivets, and welding that are already mature in the prior art.

[0076] The standard mechanical parts used in this invention, including but not limited to fasteners, bearings, and drones that require their use, are all commercially available standard products known in the relevant technical field and can be directly purchased from market channels. Irregularly shaped parts can be custom-made according to the structural descriptions in this specification and accompanying drawings.

[0077] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A self-locking ground line trolley based on unmanned aerial vehicle delivery, characterized in that: It includes a hook guide module (1), a gravity linkage locking module (2) and a load-bearing pulley module (3) connected in sequence, and the modules together form an integrated main frame; The hook guide module (1) is used to guide the ground wire to slide into the mounting position; The top of the gravity linkage locking module (2) is connected to the bottom of the hook guide module (1), and the bottom of the gravity linkage locking module (2) is hinged to the load-bearing pulley module (3). Through the balance of gravity torque, the lifting unlocking and releasing locking are realized, and a limiting structure is provided to limit its rotation stroke. The load-bearing pulley module (3) includes a deep groove pulley (32) with closed-loop protection, which is used to carry and guide the working rope; The trolley is made of lightweight, high-strength materials and is suitable for the loads of drones and wires.

2. The self-locking ground wire trolley based on UAV deployment as described in claim 1, characterized in that, The hook guide module (1) includes a guide frame (11) and a frame (12). The guide frame (11) is set in a V shape and is fixedly connected to the top of the frame (12) to form a V-shaped guide groove.

3. The self-locking ground wire trolley based on UAV deployment as described in claim 2, characterized in that, The gravity linkage locking module (2) includes a connecting rod (21) and a locking frame (23). The top end of the connecting rod (21) is fixedly connected to the bottom of the frame (12), and a roller (22) is rotatably connected to the outer wall of the connecting rod (21). The bottom of the connecting rod (21) is rotatably connected to a locking frame (23), and the bottom of the locking frame (23) is rotatably connected to a rotating shaft (24).

4. The self-locking ground wire trolley based on UAV deployment as described in claim 3, characterized in that, The load-bearing pulley module (3) includes a U-shaped frame (31), the middle side wall of the U-shaped frame (31) is provided with a triangle, the top of the side wall of the triangle is provided with a groove (310), and the roller (22) is slidably connected to the inner wall of the groove (310). The bottom of the triangular sidewall is provided with a shaft hole (311), and the locking frame (23) is rotatably connected to the inner wall of the shaft hole (311) via a rotating shaft (24); The top of the U-shaped frame (31) extends into a hook, the opening width of which is 1.5 times the maximum diameter of the cable.

5. The self-locking ground wire trolley based on UAV deployment as described in claim 4, characterized in that, The U-shaped frame (31) is provided with a U-shaped notch, and the top of the locking frame (23) is deflected at the top of the U-shaped notch; The limiting structure is composed of an arc-shaped protrusion (312), which is fixedly connected to the outer wall of the U-shaped notch to prevent the lifting ring from rotating excessively and to ensure that the top of the locking frame (23) stays at the sealing position of the U-shaped notch.

6. The self-locking ground wire trolley based on UAV deployment as described in claim 5, characterized in that, One end of the U-shaped frame (31) is provided with an arc-shaped extension plate (313) to facilitate the cable to enter the interior of the U-shaped opening along the arc surface.

7. The self-locking ground wire trolley based on UAV deployment as described in claim 5, characterized in that, The bottom of the U-shaped frame (31) is rotatably connected to a pulley (32), and a pin (33) is connected between the pulley (32) and the bottom of the U-shaped frame (31). A groove is provided on the outer wall of the pulley (32), and the groove is designed as a deep groove waist shape. The outer edge of the pulley (32) is flush with the bottom side wall of the U-shaped frame (31) to form a closed-loop protection.

8. The self-locking ground wire trolley based on UAV deployment as described in claim 3, characterized in that, The roller (22) is made of self-lubricating copper bushing or sealed deep groove ball bearing, with Teflon coating.

9. The self-locking ground wire trolley based on UAV deployment as described in claim 1, characterized in that, The hook guide module (1), gravity linkage locking module (2) and load-bearing pulley module (3) are all made of aviation aluminum.

10. The self-locking ground wire trolley based on UAV deployment as described in any one of claims 3 or 7, characterized in that, The roller (22) and pin (33) are made of 304 stainless steel or 40Cr alloy steel.

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