Anti-falling quick self-locking mechanism for tower climbing of unmanned aerial vehicle

Abstract

The utility model discloses an unmanned aerial vehicle tower climbing anti-falling quick self-locking mechanism, which belongs to the technical field of power transmission line iron towers, and comprises a first clamping piece and a second clamping piece, the first clamping piece and the second clamping piece are arranged in an inverted U shape, a connecting block is fixed at the top between the first clamping piece and the second clamping piece, and a supporting column is fixed at the top of the connecting block. A hanging ring is fixed to the top of the supporting column, a pressure switch is installed at the top end in the hanging ring and connected with a driving motor sequentially through a relay and a contactor, the driving motor is arranged on the outer side face of the second clamping piece, an output shaft of the driving motor is connected with a locking device, and the power phase sequence of the driving motor is controlled through the pressure switch. The locking and unlocking of the locking device are further controlled; through the combination of the pressure switch, the motor and the lock hook, when the unmanned aerial vehicle is hung on the hanging ring, the lock hook can be opened and closed through forward rotation and reverse rotation of the pressure switch and the trigger motor, and when the lock hook is closed, rapid self-locking can be directly carried out.

Description

Technical Field

[0001] This utility model relates to the field of power transmission line tower technology, specifically to a rapid self-locking mechanism for preventing drones from falling from towers. Background Technology

[0002] Drone operations and tower maintenance are typically conducted at high altitudes, posing a fall risk to workers. Therefore, ensuring safety during high-altitude operations and preventing falls is crucial. Currently, there are two main types of fall protection devices for tower climbing: one is the use of double extension ropes, double hook fall arrestors, and safety rings. However, these fall protection tools alter existing tower climbing habits, significantly increasing the physical exertion of workers and thus raising the risk of falls. Frontline teams are not keen on using them. The second type involves adding fall-prevention ladders, fall-prevention rails, and fall-prevention steel strands. These devices require power outages for installation, are costly, involve significant investment, and are difficult to maintain, hindering widespread adoption. Therefore, a self-locking fall protection device for drone tower climbing has emerged.

[0003] Traditional fall arrestor fast self-locking mechanisms have significant limitations. Specifically, the fall arrestor is usually suspended and locked directly to the horizontal support steel structure at the top of the tower. However, this locking strategy does not effectively limit the space between the fall arrestor and the steel structure, causing the fall arrestor to be easily affected by external forces during operation, resulting in unnecessary swinging, which may interfere with or even endanger the safety of personnel working on the tower.

[0004] Furthermore, the aforementioned self-locking strategy relies on the tight fit and clamping force of complex structural components to achieve the locking function. However, this reliance has two major drawbacks: first, the clamping force may gradually weaken due to material fatigue, wear, or environmental factors, making it insufficient to ensure a long-term stable locking state; second, it requires all structural components involved in self-locking to be precisely aligned, which is often difficult to achieve in practical applications and is easily affected by maintenance conditions. Once these structural components deform due to long-term use or accidental impact, it will directly lead to the failure of the self-locking function, thereby significantly increasing the safety risks during operation and potentially causing serious accidents. Therefore, for UAV tower climbing operations, there is an urgent need to develop a more stable, reliable, and easy-to-maintain fall-prevention rapid self-locking mechanism to overcome the shortcomings of traditional designs and ensure the safety of operators. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of the aforementioned technologies by proposing a rapid self-locking mechanism for preventing drones from falling from towers, aiming to solve the technical problems of existing self-locking mechanisms for preventing falls being difficult to maintain and unstable.

[0006] This utility model provides a rapid self-locking mechanism for preventing drones from falling from towers, comprising: a first latching component and a second latching component, the first latching component and the second latching component being arranged in an inverted U-shape, a connecting block being fixed at the top between the first latching component and the second latching component, a support column being fixed at the top of the connecting block, a hanging ring being fixed at the top of the support column, a pressure switch being installed at the top of the hanging ring, the pressure switch being connected to a drive motor in sequence via a relay and a contactor, the drive motor being disposed on the outer side of the second latching component, and a locking device being connected to the output shaft of the drive motor, the power phase sequence of the drive motor being controlled by the pressure switch, thereby controlling the locking and unlocking of the locking device.

[0007] Optionally, the locking device includes a locking hook disposed between the bottom of the first latching member and the bottom of the second latching member, a rotating rod disposed in the middle of the locking hook, one end of the rotating rod passing through the locking hook and connecting to the bottom of the inner side of the first latching member, the rotating rod being fixedly connected to the locking hook, and the other end of the rotating rod passing through the locking hook and through the second latching member and connecting to the output shaft of the drive motor.

[0008] Optionally, the inner sidewalls of the first and second snap-fit ​​members are provided with square grooves, and a connecting member is provided on the outer side of the square groove, and the connecting member is located inside the first and second snap-fit ​​members.

[0009] Optionally, the linkage includes a mounting groove disposed outside the square groove, and the mounting groove is located inside the first snap-fit ​​member and the second snap-fit ​​member. A telescopic hydraulic cylinder is disposed inside the mounting groove, and a clamping plate is fixedly connected to one side of the telescopic hydraulic cylinder. The clamping plate is located inside the square groove, and the clamping plate fits around the square groove.

[0010] Optionally, a connecting rod is fixedly provided between the bottom of the first snap-fit ​​member and the second snap-fit ​​member, and a sleeve is rotatably connected to the outside of the connecting rod, and a traction rope is wound around the outside of the sleeve.

[0011] Optionally, an arc-shaped solar panel is installed on the rear side of the first and second connectors, and a storage battery is disposed at the bottom of the back of the first and second connectors. The solar panel is connected to the storage battery through a photovoltaic converter.

[0012] Compared with existing technologies, it has the following beneficial effects:

[0013] 1. This utility model combines a pressure switch, a motor, and a locking hook. When a drone is hooked onto a hanging ring, the pressure switch triggers the motor to rotate forward and backward, thereby opening and closing the locking hook. When the locking hook is closed, it can directly and quickly self-lock, achieving a highly efficient and safe self-locking method. This eliminates the need for complex mechanical self-locking structures, improving the safety and clamping force of the self-locking mechanism. This allows the drone's rapid self-locking mechanism for tower climbing and fall prevention to self-lock and clamp angle steel of different tower types and sizes. It is applicable to different tower types and different angle steels, solving the problem that clamping force may gradually weaken due to material fatigue, wear, or environmental factors, which is insufficient to ensure a long-term stable locking state. It also solves the technical problem of requiring all structural components involved in self-locking to be precisely aligned, which is often difficult to achieve in practical applications and is easily affected by maintenance conditions. Once these structural components are deformed due to long-term use or accidental impact, it will directly lead to the failure of the self-locking function, thus significantly increasing the safety risks during operation and potentially causing serious accidents.

[0014] 2. This utility model, through the combination of a telescopic hydraulic cylinder and a clamping plate, allows the clamping plate to be driven from both sides to abut against the tower top crossarm steel frame of different tower types and angle steel sizes when the first and second clamping components are engaged at the top crossarm steel frame of the tower. This achieves the limiting and fixing of the first and second clamping components, enabling the rapid self-locking mechanism for UAV tower climbing fall prevention to be applicable to different tower types and angle steels. It avoids the swaying and displacement of the first and second clamping components when they are hung on the surface of the tower top crossarm steel frame. This solves the technical problem that the current lack of effective spatial limiting measures between the fall arrestor and the steel structure makes the fall arrestor susceptible to unnecessary swaying during operation due to external forces, which may interfere with or even endanger the safety of personnel working on the tower. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only preferred embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 A structural schematic diagram of a rapid self-locking mechanism for preventing drones from falling from towers, provided by this utility model;

[0017] Figure 2 A schematic diagram of the internal structure of the square groove and mounting groove provided by this utility model.

[0018] In the diagram, 1 is the first card connector; 2 is the second card connector.

[0019] 31. Connecting block; 32. Support column; 33. Hanging ring; 34. Pressure switch;

[0020] 41. Drive motor; 42. Locking hook; 43. Rotating rod;

[0021] 51. Square groove; 52. Clamping plate; 53. Mounting groove; 54. Telescopic hydraulic cylinder;

[0022] 61. Connecting rod; 62. Sleeve; 63. Traction rope;

[0023] 71. Solar panel; 72. Storage battery. Detailed Implementation

[0024] To better understand the structure, functional features, and advantages of this utility model, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings:

[0025] Example:

[0026] like Figure 1 As shown, this utility model provides a rapid self-locking mechanism for preventing drones from falling from towers, including: a first locking member 1 and a second locking member 2. The first locking member 1 and the second locking member 2 are arranged in an inverted U-shape. A connecting block 31 is fixed at the top between the first locking member 1 and the second locking member 2. A support column 32 is fixed at the top of the connecting block 31. A hanging ring 33 is fixed at the top of the support column 32. A pressure switch 34 is installed at the top of the hanging ring 33. The pressure switch 34 is connected to a drive motor 41 in sequence through a relay and a contactor. The drive motor 41 is located on the outer side of the second locking member 2. The output shaft of the drive motor 41 is connected to a locking device. The power phase sequence of the drive motor 41 is controlled by the pressure switch 34, thereby controlling the locking and unlocking of the locking device.

[0027] Specifically, the drone tower climbing anti-fall rapid self-locking mechanism is mainly used in high-altitude operations such as power, communication, and wind power generation. In specific applications, a horizontal slide rail is first set at the top of the tower to provide track support for the operator to move left and right. This increases protection for the operator during left and right movement at the top of the tower after climbing. It is used in conjunction with the drone tower climbing anti-fall rapid self-locking mechanism provided by this utility model. When used together with the self-locking mechanism, it fully ensures the safety of the operator during the operation.

[0028] During self-locking, a combination of relays and contactors is used to switch the power supply phase sequence of the motor, thereby changing the motor's rotation direction. Specifically: the relay includes normally closed and normally open contacts. After receiving an electrical signal from the pressure switch 34, the relay changes the state of its contacts. Through the closing and opening of the contacts, the relay can control the contactor's coil to be energized or de-energized. Then, the contactor operates according to the relay's instructions. The contactor's main contacts are responsible for connecting or disconnecting the motor's main power supply. By swapping the wiring of two phases of the motor's power supply, the combination of contactors can change the power supply phase sequence of the motor, thereby controlling the motor's forward or reverse rotation. Finally, after the power supply phase sequence is changed, the motor's rotation direction will also change accordingly.

[0029] When the drone is attached to the mounting ring 33, it will contact the pressure switch 34. The pressure switch 34 can monitor pressure changes in real time. When the pressure reaches the preset threshold of the pressure switch 34, the pressure switch 34 will send an electrical signal, the relay contacts will close, and the coil power of the forward contactor will be connected. The main contacts of the forward contactor will close, and the power of the drive motor 41 will be connected in the positive phase sequence, and the drive motor 41 will rotate forward. When the drive motor 41 rotates forward, it will drive the locking device to rotate forward. At this time, the locking device is not locked.

[0030] When the drone hangs the first connector 1 and the second connector 2 on the surface of the crossarm steel frame at the top of the tower and leaves the hanging ring 33, the pressure switch 34 resets, and the relay changes state again, causing the relay contacts to switch and connect the coil power supply of the reverse contactor. The main contacts of the reverse contactor close, changing the two-phase wiring of the power supply of the drive motor 41, thereby changing the power phase sequence and causing the drive motor 41 to reverse. This reverse rotation of the drive motor 41 drives the locking device to automatically and quickly clamp and lock, achieving a highly efficient and safe self-locking method. This eliminates the need for complex mechanical self-locking structures, improves the safety and clamping force of the self-locking, and solves the problem that the clamping force may gradually weaken due to material fatigue, wear, or environmental factors, which is insufficient to ensure a long-term stable locking state. It also solves the problem of requiring all structural components involved in self-locking to be precisely aligned. This is often difficult to achieve in practical applications and is easily affected by maintenance conditions. Once these structural components are deformed due to long-term use or accidental impact, it will directly lead to the failure of the self-locking function, thereby significantly increasing the safety risks during operation and potentially causing serious accidents.

[0031] As an optional implementation, the locking device includes a locking hook 42 disposed between the bottom of the first latching member 1 and the second latching member 2. A rotating rod 43 is disposed in the middle of the locking hook 42. One end of the rotating rod 43 passes through the locking hook 42 and is connected to the bottom of the inner side of the first latching member 1. The rotating rod 43 is fixedly connected to the locking hook 42. The other end of the rotating rod 43 passes through the locking hook 42 and through the second latching member 2 and is connected to the output shaft of the drive motor 41.

[0032] Specifically, when the drone attaches the hanging ring 33, it will contact the pressure switch 34, drive the motor 41 to rotate forward, which will drive the rotating rod 43 to rotate, thereby causing the locking hook 42 connected to the rotating rod 43 to rotate outward in the forward direction. At this time, the locking device is released. When the drone hangs the first snap-fit ​​1 and the second snap-fit ​​2 on the surface of the crossbeam steel frame at the top of the tower, after leaving the hanging ring 33, the pressure switch 34 resets, the drive motor 41 reverses, drives the rotating rod 43 to rotate in the opposite direction, thereby causing the locking hook 42 connected to the rotating rod 43 to rotate in the opposite direction, thus completing the self-locking of the device.

[0033] As an optional implementation method, such as Figure 2 As shown, the inner sidewalls of the first snap-fit ​​member 1 and the second snap-fit ​​member 2 are provided with square grooves 51, and the outer side of the square grooves 51 is provided with a connecting member, which is located inside the first snap-fit ​​member 1 and the second snap-fit ​​member 2.

[0034] The linkage includes a mounting groove 53 disposed outside the square groove 51, and the mounting groove 53 is located inside the first snap-fit ​​member 1 and the second snap-fit ​​member 2. A telescopic hydraulic cylinder 54 is disposed inside the mounting groove 53, and a clamping plate 52 is fixedly connected to one side of the telescopic hydraulic cylinder 54. The clamping plate 52 is located inside the square groove 51, and the clamping plate 52 fits around the square groove 51.

[0035] Specifically, after the first locking member 1 and the second locking member 2 have completed their self-locking, the telescopic hydraulic cylinder 54 is opened. The telescopic hydraulic cylinder 54 will drive the locking plate 52 to move, and the locking plates 52 on both sides will abut against the steel frame of the tower top crossarm, thereby realizing the limiting and fixing of the first locking member 1 and the second locking member 2. This avoids the situation of swaying and displacement when the first locking member 1 and the second locking member 2 are hung on the surface of the steel frame of the tower top crossarm. This solves the technical problem that the current lack of effective spatial limiting measures between the fall arrestor and the steel structure makes the fall arrestor susceptible to external forces during operation, causing unnecessary swinging, which may interfere with or even endanger the safety of personnel working on the tower.

[0036] As an optional implementation, a connecting rod 61 is fixedly installed between the bottom of the first snap-fit ​​1 and the second snap-fit ​​2. A sleeve 62 is rotatably connected to the outside of the connecting rod 61. A traction rope 63 is wound around the outside of the sleeve 62. When installing the fall arrest device in front of the power tower, the traction rope 4 is wound around the surface of the sleeve 62. The traction rope 63 is installed on the top of the power tower together with the fall arrest device by taking off by a drone. At this time, the ground staff can tie a safety rope to one end of the traction rope 63 and pull the other end of the traction rope 63 to pull the safety rope upward and finally install the safety rope on the fall arrest mechanism.

[0037] As an optional implementation, an arc-shaped solar panel 71 is installed on the rear side of the first snap-fit ​​1 and the second snap-fit ​​2, and a storage battery 72 is provided at the bottom of the back of the first snap-fit ​​1 and the second snap-fit ​​2. The solar panel 71 is connected to the storage battery 72 through a photovoltaic converter.

[0038] Specifically, the curved solar panel 71 absorbs solar energy and converts the absorbed solar energy into electrical energy. The battery 72 can store the electrical energy generated by the solar panel 71 to power the load and avoid power outages when used at high altitudes.

[0039] It should be noted that the drive motors and other components used in this application are all existing electronic components in the field. Those skilled in the art can understand the circuit structure of drive motors and other electronic components and their interconnection structure based on existing publicly available technical knowledge and technical information. This application will not elaborate on this in detail, and those skilled in the art can freely select the corresponding models as needed. This embodiment does not impose any specific restrictions here.

[0040] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any person skilled in the art can make many possible variations and modifications to the technical solution of this utility model, or modify it into equivalent embodiments, without departing from the scope of the technical solution of this utility model. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technology of this utility model without departing from the scope of the technical solution of this utility model shall fall within the protection scope of this technical solution.

Claims

1. A tower climbing anti-falling quick self-locking mechanism of a UAV, characterized in that The device includes: a first snap-fit ​​component (1) and a second snap-fit ​​component (2). The first snap-fit ​​component (1) and the second snap-fit ​​component (2) are arranged in an inverted U-shape. A connecting block (31) is fixed at the top between the first snap-fit ​​component (1) and the second snap-fit ​​component (2). A support column (32) is fixed at the top of the connecting block (31). A hanging ring (33) is fixed at the top of the support column (32). A pressure switch (34) is installed at the top inside the hanging ring (33). The pressure switch (34) is connected to a drive motor (41) in sequence through a relay and a contactor. The drive motor (41) is located on the outer side of the second snap-fit ​​component (2). The output shaft of the drive motor (41) is connected to a locking device. The power phase sequence of the drive motor (41) is controlled by the pressure switch (34), thereby controlling the locking and unlocking of the locking device.

2. The unmanned aerial vehicle tower climbing anti-falling quick self-locking mechanism according to claim 1, characterized in that, The locking device includes a locking hook (42) disposed between the bottom of the first snap-fit ​​member (1) and the second snap-fit ​​member (2). A rotating rod (43) is disposed in the middle of the locking hook (42). One end of the rotating rod (43) passes through the locking hook (42) and is connected to the bottom of the inner side of the first snap-fit ​​member (1). The rotating rod (43) is fixedly connected to the locking hook (42). The other end of the rotating rod (43) passes through the locking hook (42) and through the second snap-fit ​​member (2) and is connected to the output shaft of the drive motor (41).

3. The unmanned aerial vehicle tower climbing anti-falling quick self-locking mechanism according to claim 1, characterized in that, The inner sidewalls of the first snap-fit ​​member (1) and the second snap-fit ​​member (2) are provided with square grooves (51), and a connecting member is provided on the outer side of the square grooves (51), and the connecting member is located inside the first snap-fit ​​member (1) and the second snap-fit ​​member (2).

4. The unmanned aerial vehicle tower climbing anti-falling quick self-locking mechanism according to claim 3, characterized in that, The linkage includes a mounting groove (53) disposed outside the square groove (51), and the mounting groove (53) is located inside the first snap-fit ​​member (1) and the second snap-fit ​​member (2). A telescopic hydraulic cylinder (54) is disposed inside the mounting groove (53). A clamping plate (52) is fixedly connected to one side of the telescopic hydraulic cylinder (54). The clamping plate (52) is located inside the square groove (51), and the clamping plate (52) fits around the square groove (51).

5. The unmanned aerial vehicle tower climbing anti-falling quick self-locking mechanism according to any one of claims 1-4, characterized in that, A connecting rod (61) is fixedly provided between the bottom of the first snap-fit ​​member (1) and the second snap-fit ​​member (2). A sleeve (62) is rotatably connected to the outside of the connecting rod (61), and a traction rope (63) is wound around the outside of the sleeve (62).

6. A rapid self-locking mechanism for preventing drone falls from towers according to claim 5, characterized in that, An arc-shaped solar panel (71) is installed on the rear side of the first connector (1) and the second connector (2). A storage battery (72) is provided at the bottom of the back of the first connector (1) and the second connector (2). The solar panel (71) is connected to the storage battery (72) through a photovoltaic converter.

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