A torsion spring equipotential structure

Abstract

The utility model discloses a torsion spring equipotential structure, its characterized in that, including fixed frame, the fixed frame includes cross bar, fixed frame and contact foot, the fixed frame is used for with detection robot fixed connection, fixed frame and contact foot install respectively on cross bar, the both sides of cross bar are equipped with walking mechanism respectively, the walking mechanism is used for under motor drive to make detection robot walk on overhead line, install contact piece on contact foot, contact piece installs on contact foot and is away from fixed frame one end, contact piece is linked with contact foot through elastic connecting piece, contact piece is located below walking mechanism, the utility model has simplified the structure, has reduced the risk of component loosening or damage, has improved the reliability of whole, and contact piece installs on contact foot and is away from detection robot, makes the electric arc discharge of contact piece and overhead line contact away from detection robot, to better protection detection robot.

Description

Technical Field

[0001] This utility model relates to the technical field of overhead line testing equipment, specifically to a torsion spring equipotential structure. Background Technology

[0002] With the continuous development of power systems, the inspection and maintenance of overhead lines have become increasingly important. To ensure the safe and stable operation of power systems, overhead line inspections need to be conducted regularly. Traditional overhead line inspections mainly rely on manual inspections or observations using ground-based auxiliary equipment. Manual inspections are inefficient, requiring significant manpower, time, and resources. Inspectors must walk along the overhead lines, and due to terrain and environmental limitations, rapid and comprehensive inspections are difficult, especially in remote mountainous areas or in inclement weather, resulting in high workload and significantly reduced efficiency. Simultaneously, manual inspections are highly dangerous; inspectors face the risk of electric shock when approaching or touching high-voltage energized overhead lines, and there is a risk of falls due to equipment failure or operational errors while working at heights. Furthermore, manual inspections and ground observations are conducted at considerable distances from the lines, limiting visibility and making it difficult to accurately identify minor damage, internal defects, and hidden faults. Insufficient inspection accuracy easily leads to missed detections and misjudgments, posing hidden dangers to the safe operation of the power system. Therefore, overhead line inspection robots have emerged.

[0003] However, when the robot is about to land on the overhead power line, the potential difference between the robot and the overhead power line can easily cause arc discharge, which can damage the robot's electronic structure. Utility Model Content

[0004] To overcome the shortcomings of the above-mentioned related technologies, a torsion spring equipotential structure is provided, which simplifies the structure, reduces the risk of component loosening or damage, and improves the overall reliability. The contact is installed on the contact foot away from the robot, so that the arc discharge generated when the contact comes into contact with the overhead line is kept away from the robot, thus better protecting the robot.

[0005] This invention provides a torsion spring equipotential structure, including a fixed frame comprising a crossbar, a fixed frame, and contact feet. The fixed frame is used for fixed connection with a detection robot. The fixed frame and contact feet are respectively mounted on the crossbar. Walking mechanisms are mounted on both sides of the crossbar, and the wheels of the walking mechanisms are used to propel the detection robot along an overhead power line under motor drive. Contact elements are mounted on the contact feet, located at the end of the contact feet away from the fixed frame. The contact elements are connected to the contact feet via elastic connectors and are located below the walking mechanisms. When the robot prepares to land on the overhead power line, the contact elements contact the overhead power line. Under this relative motion, the elastic connector undergoes elastic deformation, generating torque. This torque allows the contact elements to fit tightly against the overhead power line, ensuring good contact between the contact elements and the overhead power line. Simultaneously, the conductivity of the contact elements creates a potential connection channel between the robot body and the overhead power line, achieving equipotential connection, ensuring potential balance, and eliminating safety hazards caused by potential differences. When the distance between the robot and the overhead power line decreases to a certain extent, the torsion spring leaves the working range and automatically resets.

[0006] Preferably, the contact element and the elastic connector are manufactured as a single unit, making the structure simpler and the installation more convenient.

[0007] Preferably, the traveling mechanism includes traveling wheels and guide pulleys. Two traveling wheels are respectively mounted on a crossbar via guide pulleys. The guide pulleys can slide on the crossbar. A traveling wheel bracket is installed between the two traveling wheels. An electric actuator is mounted on the crossbar and fixedly connected to a fixed frame. The telescopic rod of the electric actuator is fixedly connected to the traveling wheel bracket. The contact foot is mounted on the guide pulley. When wheelbase adjustment is required, the electric actuator begins to extend or retract after receiving a command from the control system. Its extension and retraction movement is transmitted to the traveling wheel bracket via a mechanical connection, thereby driving the traveling wheels and guide pulleys to move along the trajectory set on the crossbar, achieving precise wheelbase adjustment. The guide pulley, mounted on the fixed frame, provides guidance and limit for the movement of the traveling wheels, ensuring the stability and accuracy of the movement. The contact foot, mounted on the guide pulley, can move with the traveling wheels on the crossbar, thereby driving the contact element to move, keeping the contact element located below the traveling wheels.

[0008] Preferably, the walking wheel bracket includes a first connecting member, a connecting rod, and a second connecting member. The first connecting member is fixedly connected to the walking wheel, and one end of the first connecting member is hinged to the connecting rod, while the other end of the connecting rod is hinged to the second connecting member.

[0009] Preferably, the crossbar is square, and the guide pulley is provided with 4 sets of rollers. Each set of rollers contacts one side of the square crossbar, providing guidance and limiting for the movement of the traveling wheels, and ensuring the stability and accuracy of the movement.

[0010] Preferably, the traveling wheel is provided with an internal ring gear, the motor is mounted on the traveling wheel bracket, the motor is connected to a transmission gear, the transmission gear meshes with the internal ring gear, and the transmission gear is an external gear. The motor drives the transmission gear to rotate, the transmission gear drives the internal ring gear to rotate, and the internal ring gear drives the traveling wheel to rotate, thereby driving the traveling wheel to travel on the overhead line.

[0011] Preferably, a metal brush is provided in front of the traveling wheel in the direction of travel. The metal brush includes metal bristles, a clamp, and a connecting frame. Multiple metal bristles are fixedly mounted on the clamp, and the connecting frame is mounted on the clamp. The connecting frame is fixedly connected to the guide pulley. When the traveling mechanism travels on the overhead line, the metal bristles come into contact with the overhead line. The metal bristles maintain constant contact with the overhead line, further ensuring that the robot is in an equipotential state, further reducing the risk of arc discharge due to potential difference, and ensuring the safe operation of the robot in a high-voltage environment.

[0012] Compared with related technologies, this invention has the following advantages: the conductivity of the contact element and the elastic deformation characteristics of the elastic connector ensure a good potential connection between the robot and the overhead line at all times, enabling timely release of potential differences and ensuring the safety of the inspection operation. This compact design saves space, allowing the robot to better adapt to the overhead line inspection environment and improving its mobility and flexibility.

[0013] The integrated design of the contact and flexible connector reduces the use of multiple components in traditional equipotential structures, simplifies the structure, reduces the risk of component loosening or damage, and improves overall reliability. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of Example 1; Figure 2 This is a schematic diagram of the structure of the contact element and the elastic connector in Embodiment 1; Figure 3 yes Figure 1 Explosion diagram; Figure 4 This is a schematic diagram of the walking wheel bracket in Embodiment 1; Figure 5 This is a schematic diagram of the guide pulley in Embodiment 1; Figure 6 This is a schematic diagram of the walking wheel structure in Example 1; Figure 7 This is a schematic diagram of the structure of the metal brush in Example 1.

[0015] In the diagram: Fixed frame 1, crossbar 11, fixed frame 12, contact foot 13, contact element 14, elastic connector 15, electric push rod 2, telescopic rod 21, traveling wheel bracket 3, first connector 31, connecting rod 32, second connector 33, guide pulley 4, roller 41, traveling wheel 5, motor 51, ring internal gear 52, transmission gear 53, metal brush 6, metal brush bristles 61, clamp 62, connecting frame 63. Detailed Implementation

[0016] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0018] Example 1 like Figures 1-7 As shown, a torsion spring equipotential structure includes a fixed frame 1, an electric actuator 2, a walking wheel bracket 3, guide pulleys 4, and walking wheels 5. The fixed frame 1 includes a crossbar 11, a fixed frame 12, and contact feet 13. Two guide pulleys 4 are respectively installed on both sides of the crossbar 11 and can slide on the crossbar 11. The fixed frame 12 is fixedly connected to the inspection robot. Two contact feet 13 are respectively located at both ends of the crossbar 11. The crossbar 11 is square, and four sets of rollers 41 are provided on the guide pulleys 4, with each set of rollers 41 contacting one side of the square crossbar. Each guide pulley 4 is equipped with a walking wheel 5, which is used to make the inspection robot move on the overhead line under the drive of the motor 51. A walking wheel bracket 3 is installed between two walking wheels. The electric actuator 2 is fixedly connected to the fixed frame 1, and the telescopic rod 21 of the electric actuator 2 is fixedly connected to the walking wheel bracket 3. Two contact feet 13 are equipped with contact elements 14, which are mounted on the ends of the contact feet 13 away from the fixed frame. The contact elements 14 are connected to the contact feet 13 via elastic connectors 15, and are located below the traveling mechanism. Preferably, the contact elements 14 and the elastic connectors 15 are manufactured as a single piece. Specifically, the contact elements 14 and the elastic connectors 15 are torsion springs formed by bending a single steel wire.

[0019] When the robot prepares to land on the overhead power line, contact member 14 makes contact with the line. The elastic connector 15 undergoes elastic deformation under this relative motion, generating torque. This torque ensures the contact member fits tightly against the overhead power line, guaranteeing good contact. Simultaneously, the conductivity of the contact member creates a potential connection channel between the robot body and the overhead power line, achieving equipotential bonding, ensuring potential balance, and eliminating safety hazards caused by potential differences. When the distance between the robot and the overhead power line decreases to a certain extent, the torsion spring moves out of the working range and automatically resets.

[0020] When wheelbase adjustment is required, the electric actuator 2 extends and retracts upon receiving a command from the control system. This extension / retraction is transmitted mechanically to the wheel support 3, which in turn drives the wheel 5 and guide pulley 4 to move along the trajectory set by the guide pulley, achieving precise wheelbase adjustment. The guide pulley 4 is mounted on the fixed frame 1, providing guidance and limiting for the movement of the wheel 5, ensuring stability and accuracy. The contact foot 13 is mounted on the guide pulley 4 and moves with the wheel on the crossbar 11, thereby moving the contact element 14 and keeping it positioned below the wheel.

[0021] Specifically, the walking wheel bracket 3 includes two first connecting members 31, two connecting rods 32, and a second connecting member 33. Each first connecting member 31 is fixedly connected to the walking wheel 5, and each first connecting member 31 is hinged to one end of one of the connecting rods 32. The other ends of the two connecting rods 32 are respectively hinged to both ends of the second connecting member 33. When the two walking wheels 5 slide on the fixed frame 1, the movement distance of the two walking wheels 5 remains consistent.

[0022] Specifically, the traveling wheel 5 is equipped with an internal ring gear 52, and the motor 51 is mounted on the traveling wheel bracket 3. The motor 51 is connected to the transmission gear 53, which meshes with the internal ring gear. The transmission gear 53 is an external gear. The motor 51 drives the transmission gear 53 to rotate, which in turn drives the internal ring gear 52 to rotate. The internal ring gear 52 then drives the traveling wheel 5 to rotate, thus propelling the traveling wheel 5 to travel on the overhead line.

[0023] In another embodiment, a metal brush 6 is positioned in front of the traveling wheel 5 in the direction of travel. The metal brush 6 includes metal bristles 61, a clamp 62, and a connecting frame 63. Multiple metal bristles 61 are fixedly mounted on the clamp 62, which is fixedly connected to the connecting frame 63. The connecting frame 63 is fixedly connected to the guide pulley 4. When the walking mechanism travels on the overhead line, the metal bristles 61 come into contact with the overhead line. The metal bristles 61 maintain constant contact with the overhead line, further ensuring that the robot is in an equipotential state, further reducing the risk of arc discharge due to potential difference, and ensuring the safe operation of the robot in a high-voltage environment.

[0024] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A torsion spring equipotential structure, characterized in that, The system includes a fixed frame, which comprises a crossbar, a fixed frame, and contact feet. The fixed frame is used to fix the inspection robot to the system. The fixed frame and contact feet are respectively mounted on the crossbar. Walking mechanisms are respectively mounted on both sides of the crossbar. The walking mechanisms are used to make the inspection robot move on the overhead line under the drive of a motor. Contact elements are mounted on the contact feet. The contact elements are mounted on the contact feet at the end away from the fixed frame. The contact elements are connected to the contact feet through elastic connectors. The contact elements are located below the walking mechanisms.

2. The torsion spring equipotential structure according to claim 1, characterized in that, The contact element and the elastic connector are manufactured as a single unit.

3. The torsion spring equipotential structure according to claim 1, characterized in that, The walking mechanism includes walking wheels and guide pulleys. The two walking wheels are respectively mounted on the crossbar via guide pulleys. The guide pulleys can slide on the crossbar. A walking wheel bracket is installed between the two walking wheels. An electric actuator is installed on the crossbar. The electric actuator is fixedly connected to the fixed frame. The telescopic rod of the electric actuator is fixedly connected to the walking wheel bracket. The contact foot is installed on the guide pulley.

4. The torsion spring equipotential structure according to claim 3, characterized in that, The walking wheel bracket includes a first connector, a connecting rod, and a second connector. The first connector is fixedly connected to the walking wheel, and one end of the first connector is hinged to the connecting rod, while the other end of the connecting rod is hinged to the second connector.

5. The torsion spring equipotential structure according to claim 3, characterized in that, The crossbar is square, and the guide pulley is equipped with four sets of rollers, each set of rollers contacting one side of the square crossbar.

6. The torsion spring equipotential structure according to claim 3, characterized in that, The walking wheel is equipped with an internal ring gear, the motor is mounted on the walking wheel bracket, the motor is connected to the transmission gear, the transmission gear meshes with the internal ring gear, and the transmission gear is an external gear.

7. The torsion spring equipotential structure according to claim 3, characterized in that, A metal brush is provided in front of the traveling wheel in the direction of travel. The metal brush includes metal bristles, a clamp, and a connecting frame. Multiple metal bristles are fixedly installed on the clamp. The clamp is connected to the connecting frame, and the connecting frame is connected to the guide pulley. When the traveling mechanism travels on the overhead line, the metal bristles come into contact with the overhead line.

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