Hanging and unhooking device

Abstract

The hooking and unhooking device comprises a base, a tensioning assembly, a driving assembly and a top block, the base is connected with the tensioning assembly, the tensioning assembly comprises a connecting rod hook and two tensioning blocks, the connecting rod hook is detachably connected with the base so as to define a moving area for the top block to move, and the two tensioning blocks are detachably connected with the base. The connecting rod hook is connected with the connecting rod, the two tensioning blocks are oppositely arranged at the two ends of the connecting rod hook and movably connected with the connecting rod hook so as to rotate relative to the connecting rod hook, buckling holes matched with the tensioning blocks are formed in the two ends of the base, and the driving assembly is installed on the base and connected with the top block. And the jacking block is driven to do lifting motion in the movable area and the tensioning block is driven to be buckled with or released from the buckling hole. The problems that a traditional unhooking and hooking mechanism is low in reliability, complex in operation and the like are solved, and the practicability of the unmanned aerial vehicle in the scenes of inspection and maintenance in the power industry and the like is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hooking and unhooking, and in particular to a hooking and unhooking device. Background Art

[0002] In the power industry, the installation and regular maintenance of high-voltage transmission lines is a critical task. These lines are often located in remote or difficult-to-reach locations, which poses a great challenge to traditional manual operations. In recent years, with the development of drone technology, the use of drones for transmission line-related operations has become a new trend. Drones can carry the necessary inspection or maintenance equipment to the target area, which significantly improves work efficiency and reduces human resource requirements.

[0003] Given that the drone operation environment is usually in suburban areas far from the city center, the auxiliary tools available on site are very limited; in addition, considering that workers rarely carry tools specifically for equipment installation and removal in order to reduce their burden, this requires that the equipment carried by the drone and its fixings must be extremely easy to use, that is, they can be installed with the least number of operating steps. In actual applications, once the drone arrives at the predetermined operation point, it is necessary to accurately release the equipment it carries to the designated location. The unhooking mechanism used in this process must be extremely reliable, but the existing unhooking mechanism has low structural reliability and is complex to operate, which can easily cause the drone to lose balance or even crash, and may also cause irreversible damage to expensive professional equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is that the existing unhooking mechanism has low structural reliability and is complicated to operate, which can easily cause the drone to lose balance or even crash, and may also cause irreversible damage to expensive professional equipment.

[0005] In order to solve the above technical problems, the present invention provides a hooking and unhooking device, which is installed on a connecting rod of a drone, and includes a base, a tensioning assembly, a driving assembly and a top block. The base is connected to the tensioning assembly, and the tensioning assembly includes a connecting rod hook and two tensioning blocks. The connecting rod hook is detachably connected to the base to define an active area for the top block to move. The connecting rod hook is connected to the connecting rod, and the two tensioning blocks are relatively arranged at the two ends of the connecting rod hook, and the tensioning block is movably connected to the connecting rod hook to rotate relative to the connecting rod hook. Buckle holes matching the tensioning blocks are provided at both ends of the base, and the driving assembly is installed on the base, and the driving assembly is connected to the top block to drive the top block to perform lifting and lowering movements in the active area and drive the tensioning blocks to engage or disengage with the buckle holes.

[0006] Furthermore, the driving assembly includes a driving member, a screw rod and a guide column, the driving member is installed on the base, one end of the screw rod is connected to the driving member, and the other end passes through the base and extends into the active area, the guide column is installed on the base and is spaced apart from the screw rod, and the top block is sleeved on the guide column and the screw rod and is cooperatively connected with the screw rod.

[0007] Furthermore, there are at least two guide pillars, and the two guide pillars are installed on the base at an interval.

[0008] Furthermore, the driving member is a reduction motor.

[0009] Furthermore, it also includes a sensing sheet and a travel switch group, wherein the sensing sheet is installed on the top block, and the travel switch group is installed on the base to detect the position of the top block.

[0010] Furthermore, the travel switch group has two travel switches, and the two travel switches are arranged at intervals along the moving direction of the top block.

[0011] Furthermore, the tensioning assembly also includes a connecting piece and a retaining spring, and the tensioning block is movably connected to the connecting rod hook through the connecting piece. The retaining spring is sleeved on the circumference of the connecting piece, and one end of the retaining spring abuts against the tensioning block, and the other end abuts against the connecting rod hook.

[0012] Furthermore, the tension block includes a connecting portion and a wedge portion connected to the connecting portion, and the connecting portion is movably connected to the connecting rod hook.

[0013] Furthermore, the portion where the top block abuts against the tension block has a sloped edge.

[0014] Furthermore, the base includes a bottom plate and two side plates, the two side plates are arranged on the bottom plate opposite to each other, and the buckle holes are provided on the side plates.

[0015] Compared with the prior art, the hook-and-unhook device according to the embodiment of the present invention has the following beneficial effects:

[0016] During the tightening operation, the embodiment of the present invention starts the driving assembly to make the top block rise, and pushes the tension block to rotate into the buckle hole on the base. At this time, the tension block is tightly buckled with the buckle hole, so that it is firmly fixed under the action of the top block. When unhooking is required, the driving assembly reverses the direction and makes the top block descend, which causes the tension block to be disengaged from the buckle hole under the action of gravity, thereby loosening the hook of the connecting rod and realizing the unhooking operation. This embodiment uses the driving assembly to automatically complete the buckling and unhooking process of the tension block, reducing the need for manual intervention, and has a simple structure. It solves the problems of low reliability and complex operation of the traditional unhooking mechanism, and improves the practicality of the drone in scenarios such as inspection and maintenance in the power industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the tightening state of the hooking and unhooking device provided in an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the unhooking state of the hooking and unhooking device provided in an embodiment of the present invention;

[0019] Figure 3 is a structural schematic diagram of a tensioning assembly provided by an embodiment of the present invention;

[0020] Figure 4 is a schematic structural diagram of a top block provided by an embodiment of the present invention;

[0021] Figure 5 It is a structural schematic diagram of a base and a travel switch group provided by an embodiment of the present invention;

[0022] In the figure, 1. base; 11. buckle hole; 12. bottom plate; 13. side plate; 2. tensioning assembly; 21. connecting rod hook; 22. tensioning block; 221. connecting part; 222. wedge block part; 23. connecting piece; 3. driving assembly; 31. driving piece; 32. screw rod; 33. guide column; 4. top block; 41. slope edge; 5. movable area; 6. induction plate; 7. travel switch group; 71. travel switch. DETAILED DESCRIPTION

[0023] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0024] like Figure 1 and Figure 2As shown, the present invention provides a hooking and unhooking device, which is installed on a connecting rod of an unmanned aerial vehicle, and includes a base 1, a tensioning assembly 2, a driving assembly 3 and a top block 4. The base 1 is connected to the tensioning assembly 2, and the tensioning assembly 2 includes a connecting rod hook 21 and two tensioning blocks 22. The connecting rod hook 21 is detachably connected to the base 1 to define an active area 5 for the top block 4 to move. The connecting rod hook 21 is connected to the connecting rod, and the two tensioning blocks 22 are relatively arranged at the two ends of the connecting rod hook 21, and the tensioning blocks 22 are movably connected to the connecting rod hook 21 to rotate relative to the connecting rod hook 21. Buckle holes 11 adapted to the tensioning blocks 22 are opened at both ends of the base 1, and the driving assembly 3 is installed on the base 1, and the driving assembly 3 is connected to the top block 4 to drive the top block 4 to perform lifting and lowering movements in the active area 5 and drive the tensioning blocks 22 to engage or disengage with the buckle holes 11.

[0025] Based on the above structure, during the tightening operation, the drive assembly 3 is started to make the top block 4 rise, and the tension block 22 is pushed to rotate into the buckle hole 11 on the base 1. At this time, the tension block 22 is tightly buckled with the buckle hole 11, so that it is firmly fixed under the action of the top block 4. When unhooking is required, the drive assembly 3 reverses the direction and makes the top block 4 fall, which will cause the tension block 22 to be separated from the buckle hole 11 under the action of gravity, thereby loosening the connecting rod hook 21 and realizing the unhooking operation. This embodiment uses the drive assembly 3 to automatically complete the buckling and unhooking process of the tension block 22, reducing the need for manual intervention, and has a simple structure, which solves the problems of low reliability and complex operation of the traditional unhooking mechanism, and improves the practicality of the drone in scenes such as inspection and maintenance in the power industry.

[0026] Furthermore, the driving assembly 3 includes a driving member 31, a screw rod 32 and a guide column 33. The driving member 31 is installed on the base 1. One end of the screw rod 32 is connected to the driving member 31 to generate a rotational motion through the driving member 31 to drive the screw rod 32 to rotate, and the other end passes through the base 1 and extends into the active area 5. The guide column 33 is installed on the base 1 and is spaced apart from the screw rod 32. The top block 4 is sleeved on the guide column 33 and the screw rod 32. The guide column 33 provides a guiding function to ensure that the top block 4 maintains a linear motion during the rising or falling process to avoid deviation or tilting, and the top block 4 is cooperatively connected with the screw rod 32. The screw rod 32 is used to convert the rotational motion into a linear motion, thereby pushing the top block 4 to move up and down along the guide column 33.

[0027] Based on the above structure, when the top block 4 needs to rise, the driving member 31 starts to work, driving the screw rod 32 to rotate clockwise or counterclockwise, and the rotation of the screw rod 32 causes the top block 4 to move upward along the screw rod 32. Since the top block 4 is also sleeved on the guide column 33, the guide column 33 limits the lateral movement of the top block 4, ensuring that it only moves in the vertical direction. When the top block 4 needs to descend, the driving member 31 rotates in the opposite direction, driving the screw rod 32 to rotate in the opposite direction, and the top block 4 moves downward accordingly. This embodiment directly controls the action of the tensioning block 22 through the up and down movement of the top block 4, and then controls the engagement or separation between the hook and the buckle hole 11, so as to achieve the fixing or release of the connecting rod hook 21 and the base 1.

[0028] It should be noted that the driving member 31 may be a motor (such as a stepper motor or a servo motor), or other forms of actuators. Preferably, the driving member 31 is a reduction motor.

[0029] Furthermore, there are at least two guide pillars 33 , and the two guide pillars 33 are installed on the base 1 at an interval.

[0030] It can be understood that the guide column 33 ensures that the top block 4 maintains linear motion during the lifting process. When the top block 4 moves along the screw rod 32, the guide column 33 limits the lateral movement of the top block 4 to prevent it from deviating from the correct motion trajectory. This helps to maintain the stability of the entire device. In addition, additional support is provided to help disperse the weight of the top block 4 and its load, reduce the pressure on the screw rod 32 alone, and thus extend the service life of the screw rod 32 and other related components. Therefore, the use of two or more guide columns 33 in this embodiment can better prevent the top block 4 from twisting or deflecting during movement, and two or more guide columns 33 can provide better lateral stability and reduce the vibration and shaking of the top block 4 during movement, which is very important for maintaining the balance of the entire system and preventing the drone from becoming unstable.

[0031] Furthermore, it also includes a sensing piece 6 and a travel switch group 7. The sensing piece 6 is installed on the top block 4 and moves with the top block 4. The travel switch group 7 is installed on the base 1 and arranged at a key position of the moving path of the top block 4 to detect the position of the top block 4.

[0032] The induction sheet 6 of this embodiment can be a magnetic induction sheet 6, a photoelectric induction sheet 6 or other types of induction elements, depending on the type of the travel switch group 7. The travel switch group 7 can be a limit switch, a proximity switch (such as a Hall effect sensor), a photoelectric switch, etc., and the appropriate switch type is selected according to the type of the induction sheet 6. When the top block 4 moves, the induction sheet 6 mounted thereon also moves. When the induction sheet 6 moves to a specific position and aligns with the travel switch group 7, the travel switch 71 will be triggered. For example, if a magnetic induction sheet 6 and a Hall effect sensor are used, when the magnetic induction sheet 6 is close to the Hall effect sensor, the sensor will detect the change in the magnetic field and send a signal. After the travel switch 71 is triggered, an electrical signal will be generated, and this signal will be transmitted to the control unit (such as a microcontroller or PLC). After receiving the signal, the control unit can determine the current position of the top block 4 according to the preset logic. According to the position information of the top block 4, the control system can make corresponding decisions, such as stopping the movement of the top block 4, changing the moving direction or speed, etc., to ensure that the top block 4 acts at the right time and position, such as stopping the movement when the top block 4 reaches the highest or lowest position to prevent overshoot or collision.

[0033] Furthermore, the travel switch group 7 has two travel switches 71 , and the two travel switches 71 are arranged at intervals along the moving direction of the top block 4 .

[0034] The two travel switches 71 of this embodiment are both mounted on the base 1 and positioned according to the movement path of the top block 4, and the two travel switches 71 usually correspond to the upper limit position and the lower limit position of the top block 4, respectively. When the top block 4 moves, the induction sheet 6 mounted on the top block 4 moves with the top block 4. When the induction sheet 6 moves to the position of the first travel switch 71 (for example, the top block 4 rises to the upper limit position), the first travel switch 71 is triggered. Similarly, when the induction sheet 6 moves to the position of the second travel switch 71 (for example, the top block 4 drops to the lower limit position), the second travel switch 71 is also triggered. Each travel switch 71 generates an electrical signal when it is triggered, and these signals are transmitted to the control unit (such as a microcontroller or PLC). The control unit determines whether the top block 4 has reached the preset upper limit or lower limit position based on the received signal. Once the top block 4 reaches the preset position, the control unit immediately issues an instruction to stop the action of the drive member 31 to prevent the top block 4 from continuing to move. If the top block 4 needs to stay at a certain specific position, the control system can also achieve this by keeping the drive member 31 in a stationary state.

[0035] Furthermore, the tensioning assembly 2 also includes a connecting piece 23 and a retaining spring. The tensioning block 22 is movably connected to the connecting rod hook 21 through the connecting piece 23 so that the tensioning block 22 can rotate relative to the connecting rod hook 21. The retaining spring is sleeved on the side of the connecting piece 23 to provide a preload and maintain a certain pressure between the tensioning block 22 and the connecting rod hook 21. One end of the retaining spring abuts against the tensioning block 22, and the other end abuts against the connecting rod hook 21.

[0036] The tension block 22 of this embodiment is connected to the connecting rod hook 21 through the connecting piece 23. The tension block 22 can rotate around the connecting rod hook 21. The rotating connection allows the tension block 22 to move freely within a certain range so that it can be engaged or separated with the buckle hole 11 on the base 1 under the drive of the top block 4. The retaining spring is set around the connecting piece 23, and its two ends are respectively in contact with the tension block 22 and the connecting rod hook 21, exerting an outward thrust on the tension block 22. This thrust keeps the tension block 22 in a certain tension state. When the top block 4 rises and pushes the tension block 22 to rotate into the buckle hole 11, the elastic force of the retaining spring cooperates with the top block 4 to help the tension block 22 to be tightly pressed into the buckle hole 11, forming a firm connection. When the top block 4 descends, the elastic force of the retaining spring also helps the tension block 22 to quickly disengage from the buckle hole 11 to complete the unhooking action. It should be noted that the connecting piece 23 of this embodiment can be a pin, a shaft or other similar rotating connecting piece 23.

[0037] like Figure 3 As shown, the tension block 22 includes a connecting portion 221 and a wedge portion 222 connected to the connecting portion 221 , and the connecting portion 221 is movably connected to the connecting rod hook 21 .

[0038] The wedge block 222 of this embodiment is wedge-shaped and matches the buckle hole 11, so that it can smoothly enter the buckle hole 11 on the base 1 under the drive of the top block 4, and can fit tightly when buckled, providing sufficient friction and stability, thereby forming a firm connection. When the top block 4 rises, it pushes the wedge block 222 of the tensioning block 22 to rotate into the buckle hole 11 on the base 1. In addition, the outer dimension of the wedge block 222 is larger than the inner dimension of the buckle hole 11 of the base 1, and the wedge block 222 is clamped in the buckle hole 11 of the mounting base 1. When the top block 4 descends, the wedge block 222 loses the support of the top block 4, and the wedge block 222 swings inward. When the outer expansion dimension of the wedge block 222 is smaller than the inner dimension of the groove, the wedge block 222 is separated from the buckle hole 11 of the base 1.

[0039] like Figure 4 As shown, the portion of the top block 4 that abuts against the tension block 22 has a sloped edge 41 .

[0040] In this embodiment, when the top block 4 rises, the sloped edge 41 gradually pushes the tensioning block 22 to rotate and enter the buckle hole 11. The structure of the sloped edge 41 makes the pushing process progressive and smoother, reducing the resistance and impact when the tensioning block 22 enters the buckle hole 11, making the whole process smoother and reducing the driving force required for the drive assembly 3. In addition, the sloped edge 41 can play a guiding role, helping the tensioning block 22 to accurately align with the buckle hole 11, ensuring that the tensioning block 22 can enter and buckle smoothly.

[0041] When the top block 4 descends, the structure of the sloped edge 41 also helps the tensioning block 22 to smoothly withdraw from the buckle hole 11, reducing the friction and resistance during the unhooking process.

[0042] like Figure 5 As shown, the base 1 includes a bottom plate 12 and two side plates 13. The bottom plate 12 provides a flat and solid foundation for installing other components, such as the drive component 3, the guide column 33, etc. The two side plates 13 are relatively arranged on the bottom plate 12, which not only provides additional structural support, but also defines the activity space of the tensioning block 22. The side plates 13 are provided with buckle holes 11 for cooperating with the wedge block portion 222 of the tensioning block 22 to form a buckling connection.

[0043] In summary, the embodiment of the present invention provides a hooking and unhooking device, which starts the driving component 3 to make the top block 4 rise during the tightening operation, and pushes the tensioning block 22 to rotate into the buckle hole 11 on the base 1. At this time, the tensioning block 22 is tightly buckled with the buckle hole 11, so that it is firmly fixed under the action of the top block 4. When unhooking is required, the driving component 3 reverses the direction and makes the top block 4 descend, which causes the tensioning block 22 to be disengaged from the buckle hole 11 under the action of gravity, thereby loosening the connecting rod hook 21 and realizing the unhooking operation. This embodiment uses the driving component 3 to automatically complete the buckling and unhooking process of the tensioning block 22, reducing the need for manual intervention, and has a simple structure, which solves the problems of low reliability and complex operation of the traditional unhooking mechanism, and improves the practicality of the drone in the inspection and maintenance of the power industry.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A hook-and-unhook device, mounted on a connecting rod of a drone, characterized in that: The invention comprises a base, a tensioning assembly, a driving assembly and a top block, wherein the base is connected to the tensioning assembly, the tensioning assembly comprises a connecting rod hook and two tensioning blocks, the connecting rod hook is detachably connected to the base to define an active area for the top block to move, the connecting rod hook is connected to the connecting rod, the two tensioning blocks are relatively arranged at the two ends of the connecting rod hook, and the tensioning block is movably connected to the connecting rod hook to rotate relative to the connecting rod hook, buckle holes matching the tensioning blocks are provided at both ends of the base, the driving assembly is installed on the base, and the driving assembly is connected to the top block to drive the top block to perform lifting movement in the active area and drive the tensioning block to buckle or disengage with the buckle hole.

2. The hook-and-unhook device according to claim 1, characterized in that: The driving assembly includes a driving member, a screw rod and a guide column. The driving member is installed on the base. One end of the screw rod is connected to the driving member, and the other end passes through the base and extends into the active area. The guide column is installed on the base and is spaced apart from the screw rod. The top block is sleeved on the guide column and the screw rod and is connected with the screw rod.

3. The hook-and-unhook device according to claim 2, characterized in that: There are at least two guide pillars, and the two guide pillars are installed on the base at intervals.

4. The hooking and unhooking device according to claim 2, characterized in that: The driving member is a reduction motor.

5. The hooking and unhooking device according to claim 1, characterized in that: It also includes a sensing sheet and a travel switch group. The sensing sheet is installed on the top block, and the travel switch group is installed on the base to detect the position of the top block.

6. The hooking and unhooking device according to claim 5, characterized in that: The travel switch group comprises two travel switches, and the two travel switches are arranged at intervals along the moving direction of the top block.

7. The hooking and unhooking device according to claim 1, characterized in that: The tensioning assembly also includes a connecting piece and a retaining spring, and the tensioning block is movably connected to the connecting rod hook through the connecting piece. The retaining spring is sleeved on the peripheral side of the connecting piece, and one end of the retaining spring abuts against the tensioning block, and the other end abuts against the connecting rod hook.

8. The hooking and unhooking device according to claim 1 or 7, characterized in that: The tension block comprises a connecting portion and a wedge portion connected to the connecting portion, and the connecting portion is movably connected to the connecting rod hook.

9. The hooking and unhooking device according to claim 1, characterized in that: The portion where the top block abuts against the tension block has a sloped edge.

10. The hooking and unhooking device according to claim 1, characterized in that: The base comprises a bottom plate and two side plates. The two side plates are arranged on the bottom plate opposite to each other, and the buckle holes are arranged on the side plates.

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