Multi-split power transmission line maintenance platform and locking method thereof on line

Abstract

The invention discloses a multi-split power transmission line maintenance platform and a locking method thereof on a line, and relates to the technical field of wire maintenance, the locking method is a method for locking the maintenance platform on a multi-split power transmission line, the maintenance platform comprises a platform body and a walking module, the locking method is realized based on a locking module fixed on a platform body, and the locking method comprises the following steps: the locking module is based on a clamping opening formed by a clamping plate, the width direction of the clamping opening is positioned in the width direction of a multi-split power transmission line, and the clamping opening is closed to clamp a wire so as to fix the platform body on the power transmission line; in the clamping opening closing process, the clamping plates on the two sides of the clamping opening synchronously move in opposite directions; in the clamping opening closing process, the clamping plates, making contact with the top-layer wire firstly, on the two sides of the clamping opening push the platform body to move horizontally in the width direction of the power transmission line. According to the scheme, self-adaptive position adjustment of the maintenance platform in the transverse direction of the power transmission line is achieved through the locking module, and locking of the maintenance platform on the power transmission line can be reliably achieved.

Description

Technical Field

[0001] This invention relates to the field of conductor maintenance technology, and in particular to a maintenance platform for multi-split transmission lines and a locking method for the line. Background Technology

[0002] As a crucial component of the power system, the safe and stable operation of transmission lines directly impacts the reliability of the power grid. With the continuous expansion of the power grid, the workload of transmission line maintenance is increasing daily. Multi-split transmission lines, due to their advantages such as large transmission capacity and low energy loss, are widely used in high-voltage and ultra-high-voltage transmission projects. However, multi-split transmission lines are typically erected at high altitudes and often located in complex terrain areas. Traditional methods of manual tower climbing and line-walking maintenance present problems such as high operational risks, high labor intensity, and low maintenance efficiency.

[0003] In recent years, drone technology has seen rapid development in the field of power transmission line maintenance. Specifically, its application in power transmission line maintenance includes using drones to transport maintenance platforms onto transmission lines. These platforms, supported by wheels, roll along the transmission lines, effectively avoiding direct tower climbing and conductor climbing by personnel, thus significantly improving the safety of maintenance operations. For example, the technical solution with patent application number CN202411982820.5 incorporates a clamping block into the walking component of the X-ray inspection device to lock the device onto the transmission line. This solution locks the inspection device onto the transmission line after it reaches the designated maintenance position, preventing accidental slippage during maintenance.

[0004] However, the existing locking technology has certain limitations: the locking scheme relies heavily on the transmission line having a fixed position on the axis of the traveling wheel. That is, the premise for the pressing block to achieve the locking function is that the transmission line must be precisely located in the center of the traveling wheel (engaged in the groove of the traveling wheel). Therefore, in practical applications, a traveling wheel that can achieve axial positioning of the transmission line and the traveling wheel needs to be used, and the traveling wheel needs to be configured so that the transmission line is embedded in the annular groove on it. However, this implementation method will increase the difficulty of positioning the traveling wheel and the transmission line. At the same time, when the spacing between the transmission lines in the direction of the transmission line extension fluctuates greatly, it may cause the traveling wheel to have excessive travel resistance.

[0005] With the development of intelligent operation and maintenance technology for transmission lines, maintenance platforms need to undertake various inspection and operation tasks. Specifically, in addition to X-ray-based non-destructive testing of transmission fittings (such as internal defect detection of tension clamps and compression fittings), maintenance scenarios also include: repairing missing R-type pins on tension clamps or suspension clamps, zero-value detection of insulator strings, repair of broken strands and wear on transmission conductors, replacement of spacers, installation and maintenance of vibration dampers, and line clearing operations. When these maintenance operations are all carried out on the maintenance platform, all of the above operations require the maintenance platform to maintain a stable and reliable locked state with the line at a specific location to ensure inspection accuracy, operation quality, and personnel safety.

[0006] In the prior art, locking the maintenance platform on the power transmission line is based on the conductor having a fixed support position on the axle of the traveling wheel. For maintenance platforms where the support position on the axle of the traveling wheel is uncertain, how to reliably fix the maintenance platform on the power transmission line is a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0007] In response to the aforementioned issue of the support position of the conductor on the axle of the traveling wheel, and for maintenance platforms where the support position on the axle of the traveling wheel is uncertain, this invention provides a maintenance platform for multi-split transmission lines and a locking method thereon. This solution uses a locking module to achieve adaptive adjustment of the maintenance platform's position in the lateral direction of the multi-split transmission line, thus reliably locking the maintenance platform on the transmission line.

[0008] To address the aforementioned problems, the present invention provides a multi-split transmission line maintenance platform and its locking method on the line, which solves the problems through the following technical points: The multi-split transmission line maintenance platform and its locking method on the line, wherein the maintenance platform includes a platform body and a walking module installed on the platform body, the walking module being configured to support and move the platform body on the top conductor of the multi-split transmission line, and the locking method is based on a locking module fixed to the platform body, wherein the locking method is as follows: The locking module is based on the clamp formed by the clamp plate on its upper part, which is located in the width direction of the multi-split transmission line. The platform body is fixed on the multi-split transmission line by clamping the top conductor after the clamp is closed. During the closing process of the clamps, the clamping plates on both sides of the clamps move synchronously towards each other; During the clamping process, the clamping plates on both sides of the clamp first come into contact with the top conductor, which push the platform body to translate in the width direction of the multi-split transmission line.

[0009] In practical application, the maintenance platform is supported on the top conductor of the multi-split transmission line by the walking module. In this supported state, the locking module is in the following state: the width direction of the clamp formed by the two clamping plates is parallel to the width direction of the multi-split transmission line (the transverse direction of the multi-split transmission line). When the maintenance platform moves along the multi-split transmission line to the predetermined maintenance position by the wheels on it, the locking module performs a clamping action to fix the maintenance platform on the multi-split transmission line.

[0010] The technical approach adopted in this solution aims to address the following issues: Existing technologies use grooves on the wheel body to precisely constrain the conductor at the center of the wheel body to prevent lateral slippage. However, this wheel-conductor coupling method presents challenges in positioning the maintenance platform on multi-branch transmission lines. Specifically, factors such as the accuracy of UAV position control (connecting the maintenance platform to the UAV via a bracket on the platform body, and the UAV lifting and releasing the maintenance platform onto the top conductor of the multi-branch transmission line), the installation accuracy of the multi-branch transmission line, and the conductor's lateral swaying under airflow disturbances make alignment between the groove and the top conductor of the multi-branch transmission line difficult. Furthermore, the above wheel-conductor coupling method also presents increased resistance during the maintenance platform's movement. Specifically, although spacers are installed along the conductor of the multi-branch transmission line, the conductor's lateral swaying under airflow disturbances still results in different lateral distances at different positions. In this situation, during the movement of the maintenance platform, there is a possibility that the wheels may push or pull the conductors on both sides in the width direction of the multi-split transmission line, thereby increasing the resistance of the maintenance platform and even causing it to stop moving. In this context, a better application method for the maintenance platform is to set the wheel surface as a cylindrical surface of equal diameter, so that the actual support position of the conductor on the wheel can be any position between the two ends of the wheel surface, and to configure a limiting structure on the wheel. The limiting structure is located at the end of the wheel and is used to prevent the conductor supporting the wheel from sliding off the end of the wheel. In this application, the problem of difficulty in positioning the wheel and the conductor is solved by taking advantage of the characteristic that the wheel surface can be supported on the conductor at any position on the wheel axis. At the same time, the problem of increased resistance caused by the lateral pushing and pulling of the conductor during the movement of the wheel is solved. However, furthermore, because the contact position between the conductor and the wheel surface changes on the axis of the wheel, the traditional locking module may not be able to effectively act on the conductor, causing the maintenance platform to fail to fix its position.

[0011] In this scheme, a locking method is adopted in which the clamping plates on both sides of the clamp move synchronously in opposite directions during the clamping process. When the support position of the conductor on the wheel body shifts (for example, it deviates towards one end of the wheel body), the clamping plates will achieve adaptive adjustment of the maintenance platform in the width direction of the multi-split transmission line through the following mechanism during the clamping process: In the initial stage of clamping, the clamping plate that first contacts the conductor will push the maintenance platform to translate in the width direction of the multi-split transmission line (the locking module pushes the maintenance platform to translate when it is fixed to the maintenance platform; if the locking module is slidably installed on the maintenance platform, the object being pushed can be the locking module itself, but the slidable cooperation between the locking module and the maintenance platform may cause lateral sliding during the maintenance process), until both clamping plates are fully closed. By reliably contacting and clamping the conductor on both sides, this solution eliminates the reliance on precise matching of the conductor and wheel positions during locking, significantly reducing the difficulty of positioning the maintenance platform by hoisting and clamping the conductor. It also avoids increased resistance on multi-branch transmission lines caused by lateral pushing and pulling of the conductor. In practical use, it is only necessary to ensure that the conductor to be clamped is within the clamping opening formed by the clamping plate when preparing to clamp it. Therefore, this solution uses a locking module to achieve adaptive adjustment of the maintenance platform's lateral position on multi-branch transmission lines. This effectively ensures reliable locking of the maintenance platform on the transmission line, even when using cylindrical wheels or wheels that can slide laterally relative to the platform body, thus improving the reliability and adaptability of the maintenance platform in practical engineering applications.

[0012] This solution employs a method where the clamps move synchronously in opposite directions during the closing process. This not only aims to avoid the problem that the clamp on the side where the conductor is located cannot push the platform body, but also to ensure that the locking module has a stable trajectory during the clamp closing process. Therefore, this solution is beneficial for achieving reliable locking of the maintenance platform in the limited space between multiple split transmission lines. Compared with adjusting the relative position of the clamp and the platform body based on the robotic arm, it can avoid interference between the locking module and adjacent conductors during the locking process.

[0013] A further technical solution to the above locking method is: The platform body translates in the width direction of the multi-split transmission line based on the lateral sliding of the wheels on the walking module relative to the top conductor. The wheels serve as the walking wheels that support the walking module along the top conductor and facilitate its movement.

[0014] The above provides a specific support scheme for the platform body on the conductor. Specifically, the wheels on the walking module are fixed to the platform body. The sliding of the platform body in the width direction of the multi-split transmission line is achieved by the conductor sliding relative to the axis of the wheel. In this way, the use of wide-body wheels with cylindrical surfaces can adapt to the support of the conductor on the maintenance platform, while avoiding the problem of precise position matching between the wheel and the conductor that would also be faced if the wheel itself could slide relative to the platform body. Specifically, in this solution, the translation of the platform body in the width direction of the multi-split transmission line caused by the clamping action of the locking module is achieved by the lateral sliding of the wheels on the walking module relative to the top conductor. The wheels serve as the walking wheels that support and move along the top conductor of the walking module. Their structure is configured to allow the conductor to be supported at any position between the two ends of the wheel surface in a way that allows the conductor to slide relative to the wheel axis. Based on this structural characteristic, when one side of the clamping plate contacts the conductor first and applies a lateral thrust to the platform body during the clamping process, the translation of the platform body in the width direction of the multi-split transmission line relies on the relative sliding of the wheel and the conductor in the direction of the wheel axis to achieve adaptive adjustment of the position between the platform body and the conductor until the clamping plates can no longer close further due to the rigid conductor being clamped between them. The key features of this solution include: during the translation of the maintenance platform, the conductor and wheels undergo low-resistance lateral relative sliding, and the clamping plate, driven pneumatically, effectively meets the lateral movement requirements of the maintenance platform; furthermore, since the wheels allow the conductor to be supported at any position along its axis, the lateral translation of the platform body does not disrupt the support stability between the wheels and the conductor, and the traveling module can still reliably support the platform body on the top conductor, ensuring the stability of the platform's posture during locking. In summary, this solution integrates the axial relative sliding of the wheels to the conductor with the adaptive clamping of the locking module, enabling the maintenance platform to automatically correct its lateral position through locking even when there is a deviation in the lateral support position. This achieves lateral correction of the maintenance platform on multi-split transmission lines while ensuring that the locking module can reliably clamp the conductor through the clamping plate.

[0015] The locking module is fixed to the walking module; Both the front and back ends of the platform body have locking modules on both sides of the walking modules. The locking process of the locking method is as follows: After the platform moves to the maintenance position of the multi-segment transmission line, the locking module on one of the walking modules is controlled to move, and the top conductor is clamped based on the locking module. After the locking module completes the clamping, the other locking modules perform clamping actions or keep the clamps in the open state.

[0016] The above scheme, which uses a locking module fixed to the traveling module, aims to address the following: when the maintenance platform is used on multi-branch transmission lines with varying top conductor distances, it may be necessary to adjust the wheel spacing on both sides of the maintenance platform to accommodate the different wheel spacing requirements. This method allows the locking module's position adjustment on the maintenance platform to be synchronized with the wheel position adjustment. The configuration of the locking module on the front and rear traveling modules ensures that at least one end of the platform body has locking modules on both sides. Specifically, this means that at least two locking modules work together to lock the maintenance platform's position, ensuring a secure locking effect; and that a smaller lateral movement distance is used to achieve locking of the maintenance platform on multi-branch transmission lines.

[0017] The above locking process aims to address the following: When the number of locking modules configured on the maintenance platform is greater than one, the wire clamping actions performed by each locking module independently of other locking modules may cause mutual interference between the locking modules, ultimately leading to locking failure. For example, when the left clamp of the left locking module on the left side of the maintenance platform is in contact with the wire, the right clamp of the right locking module on the right side of the maintenance platform is in contact with the wire, and the clamps of the locking modules on both sides of the maintenance platform are closed, there is no state in which a particular locking module can reliably clamp the wire. To avoid simultaneous operation of all locking modules and interference from the lateral movement of the maintenance platform that could cause false locking, this solution adopts the action of a locking module on only one walking module. Once a reliable lock is achieved based on the lateral movement of the maintenance platform determined by that locking module, other locking modules will then perform clamping actions or continue to maintain the clamps open, thus avoiding interference that may be caused by simultaneous operation of locking modules on different sides of the maintenance platform.

[0018] After locking is completed, in order to achieve a rigid connection between the maintenance platform and the conductor, the preferred application is to fix the position of the locking module on the walking module, and have other locking modules perform clamping actions to provide further assistance in locking the maintenance platform to the conductor: under the influence of the locking module that has completed conductor clamping, other locking modules may be unable to perform further clamping actions when one of their clamping plates contacts the conductor, due to the obstruction of the conductor. In this state, the contact force between the clamping plates of other locking modules and the side of the conductor provides further locking assistance for locking the maintenance platform to the conductor.

[0019] The locking module is fixed to the walking module; Both the front and back ends of the platform body have locking modules on both sides of the walking modules. The locking process of the locking method is as follows: After the platform body moves to the maintenance position of the multi-segment transmission line, the locking modules on each walking module act synchronously. For each locking module, when the clamp on the locking module comes into contact with the top wire and it is determined that the locking module is not the last locking module to come into contact with the top wire, the clamp on the locking module is restored to the open state. The locking module that makes the last contact with the top conductor is used to clamp the top conductor. After the locking module completes the clamping, the other locking modules perform clamping actions or keep the clamping plates in the open state.

[0020] The above provides another implementation of the locking method, which differs from the previous locking process. In this solution, during the locking process, the locking modules of each walking module perform locking actions synchronously. For the locking module that contacts the conductor first through the clamp, it means that the conductor in the clamp of the locking module is further away from the center of the clamp. If this locking module is used to lock the maintenance platform on the conductor, the maintenance platform needs to move a greater distance laterally. Therefore, in this solution, by judging the order in which the clamps of each locking module contact the conductor, only the locking module that contacts the top conductor last is used to complete the locking on the top conductor. This can effectively reduce the amount of lateral movement of the maintenance platform in the width direction of the multi-split transmission line caused by the locking process. This solution can effectively reduce the energy consumption of the locking module during operation and eliminate the instability factors that may be caused by the large lateral movement of the maintenance platform. It is easy to understand that for the locking module that contacts the conductor first through the clamp, the state of its clamp is restored to the open state. This aims to prevent the clamps of these locking modules from interfering with the locking quality of the locking module that contacts the top conductor last due to contact with the conductor. In practical applications, the contact status detection between the clamps and the top wire can be achieved based on vibration sensors installed on each clamp: the vibration sensors detect the contact status by picking up the collision vibration signal generated when the clamps are flipped to contact the wire.

[0021] During the clamping action of other locking modules, the contact force between the upper clamping plate of the locking module and the top wire is determined. When the contact force is greater than a set threshold, the locking module is determined to be in a clamping state and the clamping state is maintained.

[0022] The above solution aims to address the following issue: As mentioned above, for other locking modules, the clamping action may not necessarily allow the clamping plates on both sides of the clamp to simultaneously clamp the wire in the clamp. In this solution, a set threshold is used as the criterion for determining the clamping state of these locking modules. In specific applications, a cylinder-driven device is used to drive the clamping plates. When the air pressure inside the cylinder reaches the set air pressure threshold, even if the piston inside has not moved to a position where the clamping plates on both sides of the clamp can simultaneously clamp the wire, it is determined that the contact force between the clamp and the top wire has reached the set threshold. Alternatively, a pressure sensor can be installed on the clamping surface of the clamp. Based on the magnitude of the contact force between the clamp and the wire detected by the pressure sensor, it is determined whether to use the driving device to further force the clamp to close. When the pressure sensor's detection result reaches the set threshold, it is determined that the locking module is in a clamping state, and this clamping state is maintained during subsequent locking processes.

[0023] This solution also relates to a multi-split transmission line maintenance platform, including a platform body and a walking module and a locking module installed on the platform body. The locking module is used to implement the locking method described in any of the above.

[0024] As is easily understood, the above maintenance platform forms the physical structural basis for implementing the locking method.

[0025] The further technical solution for the above-mentioned multi-split transmission line maintenance platform is as follows: The locking module includes a module frame, a drive device mounted on the module frame, and clamping plates. There are two clamping plates. The drive device is connected to each clamping plate. The drive device is used to drive the two clamping plates to open and close synchronously. The module frame is fixed on the maintenance platform. It also includes a return spring, which is used to: when the driving device applies a constraint to the clamping plates, the two clamping plates close together and the return spring is elastically compressed; when the driving device removes the constraint applied to the clamping plates, the return spring pushes the two clamping plates open by rebounding.

[0026] In this solution, the return spring provides the unlocking driving force, enabling the locking module to unlock without the need for reverse drive from the drive device. This simplifies the control logic of the drive device and reduces its complexity and energy consumption. The return spring also prevents drive device failure: in the event of a drive device failure (such as power outage or air supply interruption), the return spring automatically drives the clamping plate to open, releasing the maintenance platform from the locked state. This prevents the platform from remaining on the conductor for an extended period due to the inability to unlock, providing a safety redundancy for emergency recovery operations. Compared to traditional methods where the drive device relies on a linkage to drive the clamping plate, this design reduces friction pairs and improves the long-term reliability of the locking module.

[0027] In summary, the use of the above-mentioned reset springs gives the locking module advantages such as simple control logic, low energy consumption, simple structure, and fault safety function. It is particularly suitable for application scenarios where the UAV hoisting and maintenance platform supports the platform on multi-split transmission lines. The structural design provided by this solution can provide reliable technical support for intelligent maintenance operations of transmission lines.

[0028] The drive device is installed at one end of the module frame, and a flip shaft is provided at the other end of the module frame. Each clamping plate is hinged to the flip shaft. Each clamp is equipped with a return spring; Each clamp is equipped with a drive arm that is fixedly connected to the clamp. The clamp and the drive arm form a bent structure, and a roller is provided on the free end of the drive arm. It also includes a pressure plate connected to the actuating end of the drive device, the drive device being used to drive the pressure plate to move linearly; The rollers on the drive arm are all supported on the pressure plate by the return spring.

[0029] The above provides a specific implementation of a locking module. In this implementation, if the driving device is positioned at the upper end of the module frame, the flipping shaft and clamping plate are positioned at the lower end of the module frame. When the return spring is in a free state, the clamping plate remains open, and the pressure plate is located away from the flipping shaft. When the driving device drives the pressure plate to move towards the flipping shaft, the pressure plate forces the upper end of the driving arm to flip outward through the rollers, and the clamping plate swings inward synchronously with the driving arm, with the clamping end flipping inward. During this process, the return spring stores force, and finally, through the movement distance control of the pressure plate, the clamping plate is forced to flip around the flipping shaft to the state of clamping the wire. When the locking module needs to release the wire, the force of the driving device on the pressure plate is removed, and the clamping plate flips around the flipping shaft to the open state under the force of the return spring to release the wire. In this implementation, the rollers are used to realize the position change of the driving arm on the pressure plate based on the rollers rolling along the pressure plate. If the driving arm and the pressure plate are engaged through a sliding surface, this implementation not only facilitates the smooth operation of the locking module but also effectively ensures that the pressure plate and the driving arm have a long-term stable engagement quality.

[0030] The reset spring is a torsion spring. The annular part of the torsion spring is sleeved on the flipping shaft. One free end of the torsion spring is fixedly connected to the drive arm of one of the clamping plates, and the other free end of the torsion spring is fixedly connected to the drive arm of another clamping plate. When the torsion spring is in its natural state, the clamp is in the open state; When the pressure plate provides a thrust to the rollers toward the tilting shaft, each clamping plate swings around the tilting shaft under this thrust, and the rollers roll along the end face of the pressure plate toward the tilting shaft.

[0031] In the above implementation, the torsion spring's natural state is used to keep the clamping plate in an open state. During the process of the pressure plate pushing the roller, the free end of the torsion spring swings synchronously with each swing arm to achieve torsional force storage. After the driving device releases the pressure plate, the torsion spring drives the clamping plate to open during the process of restoring its deformation. The above implementation method of using a torsion spring as a reset spring not only makes the locking module have a compact structure, but also has the characteristics of simple assembly of the reset spring on the locking module, easy to ensure that the reset spring does not interfere with other components under different deformations, and the reset spring's force changes smoothly during the rotation of the driving arm.

[0032] It also includes a guide wheel assembly fixedly connected to the pressure plate, the guide wheel assembly being supported on the module frame; During the linear reciprocating motion of the pressure plate, the guide wheel assembly guides the direction of the pressure plate's movement through its cooperation with the module frame; The guide wheel assembly is equipped with guide wheels on a pair of opposite sides of the module frame. During the linear reciprocating motion of the pressure plate, each guide wheel rolls along the module frame.

[0033] In the above implementation, during the movement of the pressure plate, the guide wheel assembly moves synchronously with the pressure plate. The guide wheels roll along the support surface on the module frame. Therefore, this solution achieves the guiding of the pressure plate movement through the mutual support between the guide wheels and the module frame, thereby stabilizing the movement trajectory of the pressure plate and optimizing the force on the drive device. The above provides a specific implementation of the guide wheel assembly, specifically by using a pair of guide wheels on opposite sides to clamp the module frame, preventing the pressure plate from tilting to either side of the module frame.

[0034] The present invention has the following beneficial effects: This solution eliminates the need for precise matching of the conductor and wheel position during locking operations, significantly reducing the difficulty of positioning the maintenance platform by hoisting and positioning the conductor. It also avoids increased resistance to movement of the maintenance platform on multi-split transmission lines due to lateral pushing and pulling of the conductor.

[0035] This solution uses a locking module to enable the maintenance platform to adaptively adjust its position laterally on multi-split transmission lines. This effectively ensures that the maintenance platform can be reliably locked on the transmission line when using cylindrical wheels or wheels that can slide laterally relative to the platform body, thereby improving the reliability and adaptability of the maintenance platform in actual engineering projects.

[0036] This solution facilitates reliable locking of the maintenance platform within the limited space between multiple split transmission lines. Compared to adjusting the relative position of the clamp and the platform body based on the robotic arm, it avoids interference between the locking module and adjacent conductors during the locking process. Attached Figure Description

[0037] Figure 1This is a schematic diagram of a specific embodiment of the maintenance platform described in this solution; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 1 The front view of the structure shown; Figure 4 for Figure 1 The diagram shown is a structural illustration of the structure in other viewport positions. Figure 5 for Figure 4 A magnified view of part B in the middle.

[0038] The reference numerals in the attached drawings are as follows: 1. Hanger; 2. Platform body; 3. Locking module; 31. Drive device; 32. Module frame; 33. Guide wheel assembly; 34. Drive arm; 35. Clamping plate; 36. Return spring; 37. Tilting shaft; 38. Roller; 39. Pressure plate; 310. Flexible pad; 4. Walking module; 41. Connecting frame; 42. Wheel body; 43. Support wheel; 44. Wheel frame; 45. Connecting arm. Detailed Implementation

[0039] The present invention will be further described in detail below with reference to the embodiments, but the present invention is not limited to the following embodiments: Example 1: like Figures 1 to 5 As shown, a locking method for a multi-split transmission line maintenance platform on the line is described. The maintenance platform includes a platform body 2 and a walking module 4 installed on the platform body 2. The walking module 4 is configured to support and move the platform body 2 on the top conductor of the multi-split transmission line. The locking method is based on a locking module 3 fixed to the platform body 2. The locking method is as follows: The locking module 3 is based on the clamp formed by the clamp plate 35 on its upper part, which is located in the width direction of the multi-split transmission line. The platform body 2 is fixed on the multi-split transmission line by clamping the top conductor after the clamp is closed. During the closing process of the clamps, the clamping plates 35 on both sides of the clamps move synchronously towards each other; During the clamping process, the clamping plates 35 on both sides of the clamp first come into contact with the top conductor, pushing the platform body 2 to translate in the width direction of the multi-split transmission line.

[0040] In practical application, the maintenance platform is supported on the top conductor of the multi-split transmission line by the walking module 4. In this supported state, the locking module 3 is in the following state: the width direction of the clamp formed by the two clamping plates 35 is parallel to the width direction of the multi-split transmission line (the transverse direction of the multi-split transmission line). When the maintenance platform moves along the multi-split transmission line to the predetermined maintenance position by the wheels 42 on it, the locking module 3 performs a clamping action to fix the maintenance platform on the multi-split transmission line.

[0041] The technical approach adopted in this solution aims to address the following issues: In existing technologies, a groove is created on the wheel body 42, and a conductor is embedded in the groove to precisely constrain the conductor at the center of the wheel body 42 to prevent lateral slippage of the wheel body 42 relative to the conductor. However, this method of engaging the wheel body 42 and the conductor presents challenges in positioning the maintenance platform on multi-branch transmission lines. Specifically, due to factors such as the accuracy of UAV position control (connecting the maintenance platform and the UAV via a hanger 1 mounted on the platform body 2, and the UAV lifting and releasing the maintenance platform onto the top conductor of the multi-branch transmission line), the installation accuracy of the multi-branch transmission line, and the left-right swaying of the conductor under airflow disturbances, alignment between the groove and the top conductor of the multi-branch transmission line becomes difficult. Furthermore, the above method of engaging the wheel body 42 and the conductor also presents challenges in increasing resistance during the movement of the maintenance platform. Specifically, although spacers are installed along the conductor of the multi-branch transmission line, the left-right swaying of the conductor under airflow disturbances still results in different lateral distances between conductors at different positions. During the movement of the maintenance platform, there is a possibility that the wheel 42 may push or pull the conductors on both sides in the width direction of the multi-split transmission line, which will increase the resistance of the maintenance platform and even cause the maintenance platform to stop. In this context, a better application method for the maintenance platform is to set the wheel surface of the wheel 42 as a cylindrical surface of equal diameter, so that the actual support position of the conductor on the wheel 42 can be any position between the two ends of the wheel surface. A limiting structure is configured for the wheel 42, which is located at the end of the wheel 42. The limiting structure is used to prevent the conductor supporting the wheel 42 from sliding out of the end of the wheel 42. In this application, the problem of difficulty in positioning the wheel 42 and the conductor is solved by taking advantage of the characteristic that the wheel surface can be supported on the conductor at any position on the axis of the wheel 42. At the same time, the problem of increased resistance caused by the lateral pushing and pulling of the conductor during the movement of the wheel 42 is solved. However, furthermore, since the contact position between the conductor and the wheel surface changes on the axis of the wheel 42, the traditional locking module 3 may not be able to effectively act on the conductor, causing the maintenance platform to fail to fix its position.

[0042] In this scheme, a locking method is adopted in which the clamping plates 35 on both sides of the clamp move synchronously towards each other during the clamping process. When the support position of the conductor on the wheel 42 shifts (for example, it deviates towards one end of the wheel 42), the clamping plates 35 will achieve adaptive adjustment of the maintenance platform in the width direction of the multi-split transmission line through the following mechanism during the clamping process: In the initial stage of clamping, the clamping plate 35 that first contacts the conductor will push the maintenance platform to translate in the width direction of the multi-split transmission line (the locking module 3 pushes the maintenance platform to translate when it is fixed to the maintenance platform; if the locking module 3 is slidably installed on the maintenance platform, the object being pushed can be the locking module 3 itself, but the slidable cooperation between the locking module 3 and the maintenance platform may cause lateral sliding during the maintenance process), until the two clamping plates... Plate 35 reliably contacts both sides of the conductor and ultimately clamps it. Therefore, this solution eliminates the need for precise position matching between the conductor and wheel 42 during locking, significantly reducing the difficulty of positioning the maintenance platform by hoisting and positioning the conductor. It also avoids increased resistance to movement of the maintenance platform on multi-split transmission lines due to lateral pushing and pulling of the conductor. In practical use, it is only necessary to ensure that the conductor to be clamped is located in the clamping opening formed by the clamping plate 35 when preparing to clamp the conductor. Therefore, this solution achieves adaptive adjustment of the maintenance platform's lateral position on multi-split transmission lines through the locking module 3. It can effectively ensure reliable locking of the maintenance platform on the transmission line when the cylindrical wheel 42 or the wheel 42 can slide laterally relative to the platform body 2, thereby improving the reliability and adaptability of the maintenance platform in actual engineering.

[0043] This solution employs a method where the clamping plates 35 move synchronously in opposite directions during the closing process. This not only aims to avoid the problem that the clamping plate 35 on the side where the conductor is located cannot push the platform body 2, but also aims to ensure that the locking module 3 has a stable trajectory during the closing process of the clamping plates 35. Therefore, this solution is beneficial for achieving reliable locking of the maintenance platform in the limited space between multiple split transmission lines. Compared with adjusting the relative position of the clamp and the platform body 2 based on the robotic arm, it can avoid interference between the locking module 3 and adjacent conductors during the locking process.

[0044] Example 2: This embodiment is a further refinement of embodiment 1: The platform body 2 translates in the width direction of the multi-split transmission line based on the lateral sliding of the wheel body 42 on the walking module 4 relative to the top conductor. The wheel body 42 serves as the walking wheel for the walking module 4 to support and move along the top conductor.

[0045] The above provides a specific support scheme for the platform body 2 on the conductor. Specifically, the wheel 42 on the walking module 4 is fixed to the platform body 2. The sliding of the platform body 2 in the width direction of the multi-split transmission line is achieved by the conductor sliding relative to the axis of the wheel 42. In this way, the use of wide-body wheels with cylindrical surfaces can adapt to the support of the conductor on the maintenance platform, while avoiding the problem of precise position matching between the wheel 42 and the conductor that would also be faced if the wheel 42 itself could slide relative to the platform body 2. Specifically, in this scheme, the translation of the platform body 2 in the width direction of the multi-split transmission line caused by the clamping action of the locking module 3 is achieved by the lateral sliding of the wheel 42 on the walking module 4 relative to the top conductor. The wheel 42 serves as the walking wheel for the walking module 4 to support and move along the top conductor. Its structure is configured to allow the conductor to be supported at any position between the two ends of the wheel surface in a way that allows the conductor to slide axially relative to the wheel 42. Based on this structural characteristic, when one side of the clamping plate 35 contacts the conductor first and applies a lateral thrust to the platform body 2 during the clamping process, the translation of the platform body 2 in the width direction of the multi-split transmission line relies on the relative sliding of the wheel 42 and the conductor in the axial direction of the wheel 42 to achieve adaptive adjustment of the position between the platform body 2 and the conductor until the clamping plates 35 can no longer close further due to the rigid conductor being clamped between them. The features of this solution include: during the translation of the maintenance platform, the conductor and wheel 42 undergo low-resistance lateral relative sliding, and the clamping plate 35, driven pneumatically, can adequately meet the lateral movement requirements of the maintenance platform; on the other hand, since the wheel 42 allows the conductor to be supported at any position along its axis, the lateral translation of the platform body 2 will not disrupt the support stability between the wheel 42 and the conductor, and the walking module 4 can still reliably support the platform body 2 on the top conductor, ensuring the stability of the platform's posture during the locking process. In summary, this solution integrates the relative sliding of the wheel 42 with the conductor along the wheel 42 axis with the adaptive clamping of the locking module 3, enabling the maintenance platform to automatically correct its lateral position through the locking operation even when there is a deviation in the lateral support position. This achieves lateral correction of the maintenance platform on multi-split transmission lines while ensuring that the locking module 3 can reliably clamp the conductor through the clamping plate 35.

[0046] In this embodiment, the wheel 42 is fixed to the platform body 2 via a connecting frame 41. The connecting frame 41 includes connecting arms 45 that are rotatably connected to both ends of the wheel 42. A support wheel 43 is positioned at the end of the wheel 42 located on the outer end of the maintenance platform. When the wheel 42 is supported on the conductor, the upper end of the support wheel 43 is connected to the end of the wheel 42. The support wheel 43 is mounted on a wheel frame 44 fixed to the connecting frame 41. The support wheel 43 provides anti-slip support for the conductor, preventing the conductor from slipping off the outer end of the wheel 42. 3. By rolling along the side of the conductor after contacting it, the resistance of the maintenance platform during the movement of the conductor is reduced. Furthermore, the support wheel 43 is equipped with a sensor to detect its rotation. When the sensor detects that the support wheel 43 is rolling, it means that the conductor has slid to the end of the wheel body 42 for maintenance. At this time, the driver configured on each walking module 4 drives the wheel body 42 on each walking module 4 to rotate differentially / in reverse, thereby correcting the support position of the conductor on the wheel body 42 and shifting the support position towards the middle position of the wheel body 42 axis.

[0047] Example 3: This embodiment is a further refinement of embodiment 1: The locking module 3 is fixed to the walking module 4; At least one of the front and back ends of the platform body 2 is equipped with a locking module 3 on both sides of the walking module 4. The locking process of the locking method is as follows: After the platform body 2 moves to the maintenance position of the multi-split transmission line, the locking module 3 on one walking module 4 is controlled to move, and the top conductor is clamped based on the locking module 3. After the locking module 3 completes the clamping, the other locking modules 3 perform clamping actions or keep the clamping plate 35 in the open state.

[0048] In the above scheme, the locking module 3 is fixed to the walking module 4. This is intended to address the issue that when the maintenance platform is used on multi-split transmission lines with different top conductor distances, it may be necessary to adjust the spacing between the wheels 42 on both sides of the maintenance platform to adapt to the different top conductor distances. This method allows the position adjustment of the locking module 3 on the maintenance platform to be synchronized with the position adjustment of the wheels 42. The above configuration of the locking module 3 on the front and rear walking modules 4 aims to ensure that the platform body 2 has locking modules 3 on both sides at at least one end. Specifically, at least two locking modules 3 work together to lock the position of the maintenance platform to ensure the locking effect; and a smaller lateral movement distance of the maintenance platform is used to achieve locking of the maintenance platform on multi-split transmission lines.

[0049] The above locking process aims to achieve the following: When the number of locking modules 3 configured on the maintenance platform is greater than 1, the wire clamping action performed by each locking module 3 independently of other locking modules 3 may cause mutual interference between the locking modules 3, ultimately leading to locking failure. For example, when the left clamping plate 35 on the left locking module 3 of the maintenance platform is in contact with the wire, the right clamping plate 35 on the right locking module 3 of the maintenance platform is in contact with the wire, and the clamping openings of the locking modules 3 on both sides of the maintenance platform are closed, there is no state in which a certain locking module 3 can reliably clamp the wire. In order to avoid the simultaneous operation of each locking module 3 and the interference caused by the lateral movement of the maintenance platform, resulting in false locking, this solution adopts the action of only the locking module 3 on the walking module 4. After a reliable lock is achieved based on the lateral movement of the maintenance platform determined by the locking module 3, other locking modules 3 then perform clamping actions or continue to maintain the clamping plate 35 in the open state, avoiding interference that may be caused by the simultaneous operation of locking modules 3 on different sides of the maintenance platform.

[0050] After locking is completed, in order to achieve a rigid connection between the maintenance platform and the conductor, the preferred application is that the position of the locking module 3 on the walking module 4 is fixed, and the other locking modules 3 perform clamping actions to provide further assistance in locking the maintenance platform to the conductor: under the influence of the locking module 3 that has completed conductor clamping, the other locking modules 3 may be unable to perform further clamping actions when one of their clamping plates 35 contacts the conductor. In this state, the contact force between the clamping plate 35 on the other locking modules 3 and the side of the conductor provides further locking assistance for locking the maintenance platform to the conductor.

[0051] Example 4: This embodiment is a further refinement of embodiment 1: The locking module 3 is fixed to the walking module 4; At least one of the front and back ends of the platform body 2 is equipped with a locking module 3 on both sides of the walking module 4. The locking process of the locking method is as follows: After the platform body 2 moves to the maintenance position of the multi-splitting transmission line, the locking modules 3 on each walking module 4 act synchronously. For each locking module 3, when the clamp 35 on the locking module 3 comes into contact with the top wire and it is determined that the locking module 3 is not the last locking module 3 to come into contact with the top wire, the clamp 35 of the locking module 3 is restored to the open state. The locking module 3, which is the last to contact the top conductor, is used to clamp the top conductor. After the locking module 3 completes the clamping, the other locking modules 3 perform clamping actions or keep the clamping plate 35 in the open state.

[0052] The above provides another implementation of the locking method, which differs from the locking process provided in Embodiment 3. In this solution, during the locking process, the locking modules 3 of each walking module 4 synchronously perform the locking action. For the locking module 3 that first contacts the wire through the clamp 35, it means that the wire in the clamp of the locking module 3 is further away from the center of the clamp. If the locking module 3 is used to lock the maintenance platform on the wire, the maintenance platform needs to move a greater distance laterally. Therefore, in this solution, by judging the order in which the clamp 35 of each locking module 3 contacts the wire, only the last contact with the top guide is used. The locking module 3, which establishes line contact, locks onto the top conductor. This effectively reduces the lateral movement of the maintenance platform across the width of the multi-split transmission line caused by the locking process. This solution effectively reduces the energy consumption of the locking module 3 during operation and eliminates potential instability caused by large lateral movements of the maintenance platform. To put it simply, for the locking modules 3 that first contact the conductor via the clamps 35, restoring the clamps 35 to their open state prevents them from interfering with the locking quality of the last locking module 3 to contact the top conductor. In practical applications, the contact state between the clamps 35 and the top conductor can be detected using vibration sensors installed on each clamp 35: the vibration sensors detect the contact state by picking up the collision vibration signal generated when the clamps 35 flip to contact the conductor.

[0053] Example 5: This embodiment is a further refinement of embodiment 3 or 4: During the clamping action of other locking modules 3, the contact force between the upper clamping plate 35 of the locking module 3 and the top wire is determined. When the contact force is greater than a set threshold, the locking module 3 is determined to be in a clamping state and the clamping state is maintained.

[0054] The above solution aims to solve the following problem: As mentioned above, for other locking modules 3, their clamping action may not necessarily be able to simultaneously clamp the wire in the clamping jaw through the clamping plates 35 on both sides of the jaw. In this solution, the set threshold is used as the basis for judging the clamping state of these locking modules 3. In specific applications, a cylinder-driven device 31 is used to drive the clamping plate 35 to move. When the air pressure in the cylinder reaches the set air pressure threshold, even if the piston inside does not move to a position that can simultaneously achieve clamping of the wire by the clamping plates 35 on both sides of the jaw, it is determined that the contact force between the clamping plate 35 and the top wire has reached the set threshold. Alternatively, a pressure sensor can be set on the clamping surface of the clamping plate 35. Based on the magnitude of the contact force between the clamping plate 35 and the wire detected by the pressure sensor, it is determined whether to use the driving device 31 to continue to force the clamping plate 35 to close further. When the detection result of the pressure sensor reaches the set threshold, it is determined that the locking module 3 is in a clamping state, and this clamping state is maintained in the subsequent locking process.

[0055] Example 6: Based on Embodiment 1, this embodiment provides a multi-split transmission line maintenance platform, including a platform body 2 and a walking module 4 and a locking module 3 installed on the platform body 2. The locking module 3 is used to implement the locking method described in Embodiment 1.

[0056] As is easily understood, the above maintenance platform forms the physical structural basis for implementing the locking method.

[0057] Example 7: This embodiment is a further refinement of embodiment 6: The locking module 3 includes a module frame 32, a drive device 31 mounted on the module frame 32, and clamping plates 35. There are two clamping plates 35. The drive device 31 is connected to each clamping plate 35 in a transmission manner. The drive device 31 is used to drive the two clamping plates 35 to open and close synchronously. The module frame 32 is fixed on the maintenance platform. It also includes a return spring 36, which is used to: when the driving device 31 applies a constraint to the clamping plate 35, the two clamping plates 35 close together, and the return spring 36 generates elastic compression; when the driving device 31 removes the constraint applied to the clamping plate 35, the return spring 36 drives the two clamping plates 35 to open together by rebounding.

[0058] In this design, the reset spring 36 provides the unlocking driving force, enabling the locking module 3 to unlock without the need for reverse drive from the drive device 31. This simplifies the control logic of the drive device 31 and reduces its complexity and energy consumption. Furthermore, the reset spring 36 prevents drive device 31 from failing: in case of drive device 31 failure (e.g., power outage, gas supply interruption), the reset spring 36 automatically drives the clamping plate 35 to open, releasing the maintenance platform from the locked state and preventing it from remaining on the conductor for an extended period due to the inability to unlock, thus providing safety redundancy for emergency recovery operations. Compared to traditional designs where the drive device 31 is based on a linkage to drive the clamping plate 35, this design reduces friction pairs and improves the long-term reliability of the locking module 3.

[0059] In summary, the use of the reset spring 36 gives the locking module 3 advantages such as simple control logic, low energy consumption, simple structure, and fault safety function. It is particularly suitable for application scenarios where the UAV hoisting and maintenance platform supports the platform on multi-split transmission lines. The structural design provided by this solution can provide reliable technical support for intelligent maintenance operations of transmission lines.

[0060] In this embodiment, a flexible pad 310 is fixed on the clamping surface of the clamping plate 35. The flexible pad 310 is a structure on the clamping plate 35 that directly contacts the wire. When the clamping plate 35 is clamping the wire, it not only avoids local damage to the wire through flexible deformation, but also increases the clamping reliability of the clamping plate 35 on the wire.

[0061] Example 8: This embodiment is a further refinement of embodiment 7: The drive device 31 is installed at one end of the module frame 32, and a flip shaft 37 is provided on the other end of the module frame 32. Each clamping plate 35 is hinged to the flip shaft 37. Each clamping plate 35 is equipped with a return spring 36; Each clamping plate 35 is equipped with a drive arm 34 fixedly connected to the clamping plate 35. The clamping plate 35 and the drive arm 34 form a bent structure. A roller 38 is provided on the free end of the drive arm 34. It also includes a pressure plate 39 connected to the actuating end of the drive device 31, the drive device 31 being used to drive the pressure plate 39 to linear motion; The rollers 38 on the drive arm 34 are all supported on the pressure plate 39 under the action of the return spring 36.

[0062] The above provides a specific implementation of the locking module 3. In this implementation, if the driving device 31 is positioned at the upper end of the module frame 32, then the flipping shaft 37, clamping plate 35, etc., are positioned at the lower end of the module frame 32. When the return spring 36 is in a free state, the clamping plate 35 remains open, and the pressure plate 39 is located away from the flipping shaft 37. When the driving device 31 drives the pressure plate 39 to move towards the flipping shaft 37, the pressure plate 39 forces the upper end of the driving arm 34 to flip outward through the roller 38. The clamping plate 35 simultaneously swings inward with the driving arm 34, clamping the end inward. During this process, the return spring 36 stores force, and finally, through the movement distance of the pressure plate 39... The control forces the clamping plate 35 to rotate around the flip axis 37 to clamp the wire. When the locking module 3 needs to release the wire, the force of the driving device 31 on the pressure plate 39 is removed. Under the force of the return spring 36, the clamping plate 35 rotates around the flip axis 37 to the open state to release the wire. In this implementation, the roller 38 is used to realize the position change of the driving arm 34 on the pressure plate 39 based on the roller 38 rolling along the pressure plate 39. If the driving arm 34 and the pressure plate 39 are engaged by a sliding surface, this implementation not only benefits the smooth operation of the locking module 3, but also effectively ensures that the pressure plate 39 and the driving arm 34 have a long-term stable engagement quality.

[0063] Example 9: This embodiment is a further refinement of embodiment 8: The reset spring 36 is a torsion spring. The annular part of the torsion spring is sleeved on the flip shaft 37. One free end of the torsion spring is fixedly connected to the drive arm 34 of one of the clamping plates 35, and the other free end of the torsion spring is fixedly connected to the drive arm 34 of the other clamping plate 35. When the torsion spring is in its natural state, the clamp 35 is in the open state; When the pressure plate 39 provides a thrust to the roller 38 toward the flip shaft 37, each clamping plate 35 swings around the flip shaft 37 under the thrust, and the roller 38 rolls along the end face of the pressure plate 39 toward the flip shaft 37.

[0064] In the above implementation, the natural state of the torsion spring is used to keep the clamping plate 35 in the open state. During the process of the pressure plate 39 pushing the roller 38, the free end of the torsion spring swings synchronously with each swing arm to achieve torsional force storage. After the driving device 31 releases the pressure plate 39, the torsion spring drives the clamping plate 35 to open during the process of restoring deformation. The above implementation of using the torsion spring as the return spring 36 not only makes the locking module 3 have the characteristics of compact structure, but also has the characteristics of simple assembly of the return spring 36 on the locking module 3, easy to realize that the return spring 36 does not interfere with other components under different deformations, and the force stored by the return spring 36 changes smoothly during the rotation of the driving arm 34.

[0065] Example 10: This embodiment is a further refinement of embodiment 9: It also includes a guide wheel assembly 33 fixedly connected to the pressure plate 39, the guide wheel assembly 33 being supported on the module frame 32; During the linear reciprocating motion of the pressure plate 39, the guide wheel assembly 33 guides the movement direction of the pressure plate 39 through its cooperation with the module frame 32; The guide wheel assembly 33 is equipped with guide wheels on a pair of opposite sides of the module frame 32. During the linear reciprocating motion of the pressure plate 39, each guide wheel rolls along the module frame 32.

[0066] In the above implementation, when the pressure plate 39 moves, the guide wheel assembly 33 moves synchronously with the pressure plate 39. The guide wheels roll along the support surface on the module frame 32. Therefore, this solution achieves the guiding of the pressure plate 39 through the mutual support between the guide wheels and the module frame 32, thereby stabilizing the movement trajectory of the pressure plate 39 and optimizing the force on the drive device 31. The above provides a specific implementation of the guide wheel assembly 33, which specifically uses a pair of guide wheels on opposite sides to clamp the module frame 32, preventing the pressure plate 39 from tilting to either side of the module frame 32.

[0067] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific embodiments of the present invention are limited to these descriptions. For those skilled in the art, other embodiments derived without departing from the technical solution of the present invention should be included within the scope of protection of the present invention.

Claims

1. A locking method for a maintenance platform on a multi-split transmission line, the maintenance platform comprising a platform body (2) and a walking module (4) mounted on the platform body (2), the walking module (4) being configured to support and move the platform body (2) on the top conductor of the multi-split transmission line, the locking method being based on a locking module (3) fixed on the platform body (2), characterized in that, The locking method is as follows: The locking module (3) is based on the clamp formed by the clamp plate (35) on its upper part, which is located in the width direction of the multi-split transmission line, and clamps the top conductor after the clamp is closed to fix the platform body (2) on the multi-split transmission line. During the closing process of the clamp, the clamp plates (35) on both sides of the clamp move synchronously towards each other; During the clamping process, the clamps (35) on both sides of the clamp first come into contact with the top conductor, pushing the platform body (2) to translate in the width direction of the multi-split transmission line.

2. The locking method on the line of the multi-split transmission line maintenance platform according to claim 1, characterized in that, The platform body (2) translates in the width direction of the multi-split transmission line based on the lateral sliding of the wheel body (42) on the walking module (4) relative to the top conductor. The wheel body (42) serves as the walking wheel for the walking module (4) to support and move along the top conductor.

3. The locking method on the line of the multi-split transmission line maintenance platform according to claim 1, characterized in that, The locking module (3) is fixed on the walking module (4); At least one of the front and back ends of the platform body (2) is equipped with a locking module (3) on both sides of the walking module (4). The locking process of the locking method is as follows: After the platform body (2) moves to the maintenance position of the multi-split transmission line, the locking module (3) on one walking module (4) is controlled to move, and the top conductor is clamped based on the locking module (3). After the locking module completes the clamping, other locking modules (3) perform clamping actions or keep the clamping plate (35) in the open state.

4. The locking method on the line of the multi-split transmission line maintenance platform according to claim 1, characterized in that, The locking module (3) is fixed on the walking module (4); At least one of the front and back ends of the platform body (2) is equipped with a locking module (3) on both sides of the walking module (4). The locking process of the locking method is as follows: After the platform body (2) moves to the maintenance position of the multi-split transmission line, the locking modules (3) on each walking module (4) act synchronously; For each locking module (3), when the clamp (35) on the locking module (3) is in contact with the top wire and it is determined that the locking module (3) is not the last locking module (3) to be in contact with the top wire, the clamp (35) of the locking module (3) is restored to the open state. The top conductor is clamped by the locking module (3) that makes the last contact with the top conductor. After the locking module completes the clamping, the other locking modules (3) perform clamping actions or keep the clamping plate (35) in the open state.

5. The locking method for the multi-split transmission line maintenance platform on the line according to claim 3 or 4, characterized in that, During the clamping action of other locking modules (3), the contact force between the upper clamping plate (35) of the locking module (3) and the top wire is determined. When the contact force is greater than the set threshold, the locking module (3) is determined to be in a clamping state and the clamping state is maintained.

6. A maintenance platform for multi-segment transmission lines, comprising a platform body (2) and a walking module (4) and a locking module (3) installed on the platform body (2), characterized in that, The locking module (3) is used to implement the locking method according to any one of claims 1 to 5.

7. The maintenance platform for multi-split transmission lines according to claim 6, characterized in that, The locking module (3) includes a module frame (32), a drive device (31) mounted on the module frame (32), and clamps (35). There are two clamps (35). The drive device (31) is connected to each clamp (35) in a transmission manner. The drive device (31) is used to drive the two clamps (35) to open and close synchronously. The module frame (32) is fixed on the maintenance platform. It also includes a return spring (36), which is used to: when the driving device (31) applies a constraint to the clamp (35), the two clamps (35) close together and the return spring (36) generates elastic compression; when the driving device (31) removes the constraint applied to the clamp (35), the return spring (36) drives the two clamps (35) to open together by rebound.

8. The maintenance platform for multi-split transmission lines according to claim 7, characterized in that, The drive device (31) is installed at one end of the module frame (32), and a flip shaft (37) is provided on the other end of the module frame (32). Each clamping plate (35) is hinged to the flip shaft (37). Each clamp (35) is equipped with a return spring (36); Each clamp (35) is equipped with a drive arm (34) fixedly connected to the clamp (35). The clamp (35) and the drive arm (34) form a bent structure. A roller (38) is provided on the free end of the drive arm (34). It also includes a pressure plate (39) connected to the actuating end of the drive device (31), the drive device (31) being used to drive the pressure plate (39) to move linearly; The rollers (38) on the drive arm (34) are all supported on the pressure plate (39) under the action of the return spring (36).

9. The maintenance platform for multi-split transmission lines according to claim 8, characterized in that, The reset spring (36) is a torsion spring. The annular part of the torsion spring is sleeved on the flip shaft (37). One free end of the torsion spring is fixedly connected to the drive arm (34) of one of the clamps (35), and the other free end of the torsion spring is fixedly connected to the drive arm (34) of another clamp (35). When the torsion spring is in its natural state, the clamp (35) is in the open state; When the pressure plate (39) provides a thrust to the roller (38) toward the flip shaft (37), each clamp (35) swings around the flip shaft (37) under the thrust, and the roller (38) rolls along the end face of the pressure plate (39) toward the flip shaft (37).

10. The multi-split transmission line maintenance platform according to claim 9, characterized in that, It also includes a guide wheel assembly (33) fixedly connected to the pressure plate (39), the guide wheel assembly (33) being supported on the module frame (32); During the linear reciprocating motion of the pressure plate (39), the guide wheel assembly (33) guides the movement direction of the pressure plate (39) through its cooperation with the module frame (32); The guide wheel group (33) is equipped with guide wheels on a pair of opposite sides of the module frame (32). During the linear reciprocating motion of the pressure plate (39), each guide wheel rolls along the module frame (32).

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