Multi-level protection method of intelligent safety rope for power aerial work

Abstract

Specifically, the application discloses a multi-stage protection method for an intelligent safety rope for power aerial work, and belongs to the field of intelligent safety, and comprises the following steps: S1. Assembling a main bearing rope body, a companion constraint rope body, an anchor point assembly, a sliding modulation assembly, a segmented locking assembly, a human body connecting assembly and a distributed sensing unit along the rope before work, and establishing an initial stress configuration; S2. Collecting state parameters of the main bearing rope body, the anchor point assembly and the human body connecting assembly during work, and forming a three-level state set; S3. Adjusting a stress path of the main bearing rope body, a state of the companion constraint rope body and a stress center of the human body connecting assembly before a critical load is applied; S4. Sequentially performing segmented locking, sliding energy dissipation, shunt bearing and rigid limiting in an impact stage; and S5. Generating a load history after impact and completing review and retirement. The method has the beneficial effects of improving the protection reliability and impact control capability in power aerial work.

Description

Technical Field

[0001] This invention relates to the field of intelligent safety, and more specifically, to a multi-level protection method for intelligent safety ropes for high-altitude power operations. Background Technology

[0002] Early safety protection for high-altitude power operations relied primarily on ordinary safety ropes, anchor points, and standardized manual operation. These simple, widely used systems laid the foundation for fall protection. Subsequently, with the increasing demands for power pole maintenance, live-line work, and complex cross-structure operations, safety rope technology gradually evolved towards high-strength fibers, energy-absorbing cushioning, and specialized connectors, continuously improving load-bearing capacity, weather resistance, and basic protection reliability in high-altitude operations. Furthermore, with the development of sensing, condition monitoring, and smart wearable technologies, existing safety rope systems have begun to possess load identification, attitude perception, and risk warning capabilities, driving the evolution of high-altitude power operation protection from simple static protection to proactive sensing protection.

[0003] However, existing technologies are still mainly focused on passive interception after a fall, and generally suffer from problems such as delayed intervention, fixed force path of the rope, concentrated transmission of impact load, single path bearing, and crude determination of decommissioning after being loaded. They are difficult to take into account the complex detour paths, lateral swing risks, and multi-stage impact modulation requirements in high-altitude power operations. Summary of the Invention

[0004] The purpose of this invention is to provide a multi-level protection method for intelligent safety ropes for high-altitude power operations, in order to solve the problems mentioned in the background: the existing technology is still mainly focused on passive interception after a fall, and generally suffers from problems such as delayed intervention, fixed force path of the rope, concentrated transmission of impact load, single path bearing, and crude determination of decommissioning after being loaded. It is difficult to take into account the complex detour paths, lateral swing risks, and multi-stage impact modulation requirements in high-altitude power operations.

[0005] Technical solution: The intelligent safety rope multi-level protection method for high-altitude power operations includes the following steps: S1. Before the commencement of high-altitude power operations, the main load-bearing rope, accompanying restraint rope, anchor point assembly, sliding modulation assembly, segmented locking assembly, human body connection assembly, and distributed sensing unit along the rope are assembled into an integrated intelligent safety rope system. The initial force configuration of the intelligent safety rope system under the current high-altitude power operation conditions is established by presetting the column position, crossarm position, initial anchoring path of the insulated load-bearing rope, initial length of the accompanying restraint rope, installation posture of the anchor point assembly, and initial force position of the human body connection assembly. S2. During high-altitude power operations, the distributed sensing unit along the rope continuously collects the axial micro-strain, local bending curvature, transient tension gradient, slip displacement, and changes in the pressure contact area of ​​the main load-bearing rope along its length. Simultaneously, it collects the deflection angle, swing direction, and attitude hysteresis of the anchor point assembly. Combined with the spatial displacement trajectory of the human body connection assembly, the load migration relationship between the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly is divided into zones to form a three-level state set of early warning load zone, critical load zone, and impact load zone. S3. When the three-level state set shows that the load state is shifting from the warning load area to the critical load area, before the human body undergoes substantial fall displacement, the sliding modulation component is driven to change the wrapping path, direction reversal number, contact length and friction interface pressure of the main load-bearing rope inside the anchor point component, and simultaneously shorten the effective working length of the accompanying constraint rope and adjust the force center position of the human body connection assembly, so that the intelligent safety rope system switches from a free following configuration to a limited release configuration, so as to complete the rope configuration remodeling before the fall impact peak is formed; S4. When the three-level state set shows that the load state has entered the impact load zone, segmented locking, quantitative sliding energy dissipation, dual-path diversion bearing and final rigid limit are executed in a preset order, so that the main bearing rope body is switched from a single continuous force path to a multi-node time-displaced force path, and the impact load is transmitted segmentally along the axial direction of the main bearing rope body, dissipated along the multiple interfaces inside the anchor point assembly, and diverted along the bypass of the accompanying constraint rope body, thereby transforming the single-peak impact process into a multi-peak displaced impact process. S5. After the impact response ends, based on the residual elongation of the main load-bearing rope, the difference in strain rebound along the line, the residual amount of local bending, the cumulative value of slip displacement, the hysteresis of the anchor point assembly deflection angle, the action sequence of the segmented locking assembly, and the load transfer amount of the accompanying constraint rope, a rope load history for this power high-altitude operation is generated. Based on the rope load history, the main load-bearing rope, the accompanying constraint rope, the slip modulation assembly, and the segmented locking assembly are divided into resettable sections, limited-use sections, and forced decommissioning sections to complete the structural review and decommissioning determination after the power high-altitude operation.

[0006] Preferably, the load migration relationship partitioning determination in S2 further includes the following steps: S2-1. Divide the main load-bearing rope into an anchor point adjacent section, an intermediate transition section, a human body connection section and an end response section along the length direction, and establish axial micro-strain sampling sequences, local bending curvature sampling sequences and slip displacement sampling sequences for the anchor point adjacent section, the intermediate transition section, the human body connection section and the end response section respectively; S2-2. Perform time synchronization and phase registration on the axial micro-strain sampling sequence to obtain the strain change rate, strain abrupt change point location, and strain propagation time difference of the anchor point adjacent segment, the intermediate transition segment, the human body connection segment, and the end response segment; S2-3. Superimpose and register the local bending curvature sampling sequence with the slip displacement sampling sequence to identify local geometric abrupt change areas at the contact positions of the main load-bearing rope with the tower corners, crossarm edges, insulator string hardware, and anchor point components; S2-4. Synchronously map the deflection angle, swing direction, and attitude backlash of the anchor point assembly with the spatial displacement trajectory of the human body connection assembly to determine the outward swing direction, downward direction, and rotation direction of the human body connection assembly relative to the anchor point assembly; S2-5. Calculate the current load migration direction and load migration rate based on the forward movement of the strain abrupt change point of the adjacent segment of the anchor point, the increase of the tensile gradient of the human body connection segment, the increase of the sliding displacement of the intermediate transition segment, and the change of the deflection angle of the anchor point assembly. S2-6. When the increase in tensile gradient of the human body connection segment increases synchronously with the forward movement of the strain mutation point of the segment adjacent to the anchor point, and the spatial displacement trajectory of the human body connection assembly deviates from the preset safe trajectory, the current load state is determined as the critical load zone; when the increase in sliding displacement of the intermediate transition segment exceeds the preset energy dissipation starting displacement, and the change in deflection angle of the anchor point component corresponds synchronously with the falling direction of the human body connection assembly, the current load state is determined as the impact load zone.

[0007] Preferably, in step S3, the sliding modulation assembly adopts a combined configuration of a multi-folding path cavity, a radial clamping ring, a stepped friction lining, and a path switching guide. The main load-bearing rope changes from an initial straight path to a multi-directional reversal path inside the anchor point assembly. The accompanying constraint rope changes from a relaxed following state to a pre-tensioned limiting state at the human body connection assembly. The force center of the human body connection assembly shifts from a position away from the center of the human torso to a position close to the center of the human torso. This allows the main load-bearing rope, the accompanying constraint rope, and the human body connection assembly to complete pre-load rebalancing before the human body undergoes continuous downward displacement, and simultaneously reduces the swing inertia and free fall stroke during the initial instability process of the human body.

[0008] Preferably, the step S3, where the main load-bearing rope is switched from a free-following configuration to a limited-release configuration, further includes the following steps: S3-1. The main load-bearing rope is switched from the straight guide channel of the anchor point assembly and introduced into the first return groove, the second return groove and the third return groove, so that the main load-bearing rope forms at least two directional reversals and at least three contact and covering paths inside the anchor point assembly; S3-2. By changing the incident angle and exit angle of the main bearing rope entering the first turnaround groove, the second turnaround groove and the third turnaround groove through the path switching guide, the main bearing rope forms a path distribution with a steep turn at the front, a gentle turn in the middle and a suppressed turn at the end inside the anchor point assembly; S3-3. Different contact pressures are applied to the main bearing rope at the inlet position of the first turnaround groove, the outlet position of the second turnaround groove, and the middle position of the third turnaround groove by the radial clamping ring, so that the main bearing rope forms a progressive friction resistance distribution along the direction of movement; S3-4. After the main load-bearing rope completes the multiple directional reversals and establishes the progressive frictional resistance distribution, the effective working length of the accompanying constraint rope is simultaneously shortened, so that the accompanying constraint rope switches from the human body following state to the swinging constraint state. S3-5. After the accompanying constraint rope switches to the swing constraint state, adjust the force ratio of the human body connection assembly relative to the waist and back connection position and the shoulder connection position of the worker, so that the force center of the human body connection assembly shifts to the center position of the human torso.

[0009] Preferably, the establishment of the progressive frictional resistance distribution in S3-3 further includes the following steps: S3-3-1. A first friction liner is provided at the position corresponding to the first return groove, a second friction liner is provided at the position corresponding to the second return groove, and a third friction liner is provided at the position corresponding to the third return groove, and the first friction liner, the second friction liner and the third friction liner are arranged to form an initial movement limiting zone, a stable energy dissipation zone and an end suppression zone in sequence along the movement direction of the main bearing rope. S3-3-2. The main bearing rope is made to generate initial slack slip in the initial limiting zone, quantitative slip in the stable energy dissipation zone, and final stage inhibited slip in the end inhibition zone; S3-3-3. The difference between the contact pressure corresponding to the first friction lining, the contact pressure corresponding to the second friction lining, and the contact pressure corresponding to the third friction lining is adjusted by the axial displacement of the radial clamping ring, so that the main bearing rope undergoes continuous resistance switching of initial movement restriction, stable slippage, and end suppression in the same loading process. S3-3-4. During the process of the main bearing rope passing through the initial movement limiting zone, the stable energy dissipation zone and the end suppression zone, the pressure contact area between the main bearing rope and the first friction lining, the second friction lining and the third friction lining are moved sequentially along the direction of movement; S3-3-5. During the migration of the pressure contact area along the direction of movement, the location of local heat accumulation generated by the main bearing rope inside the anchor point assembly is restricted to the preset heat dissipation area of ​​the anchor point assembly.

[0010] Preferably, in step S4, the segmented locking assembly adopts a series-triggered configuration of a first axial micro-segment locking body, a second axial micro-segment locking body, a shear release plate, a bypass load switching component, and a travel limit stop. After the main load-bearing rope enters the impact load zone, it is first initially limited by the first axial micro-segment locking body, then delayed by the second axial micro-segment locking body, then controlled by the shear release plate to control the quantitative sliding length of the main load-bearing rope, then transferred part of the impact load to the accompanying constraint rope by the bypass load switching component, and finally terminated by the travel limit stop to stop the remaining displacement of the main load-bearing rope. This allows the peak impact load to be divided into multiple sequentially occurring local load peaks along the time axis, and the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly to jointly form an impact peak transmission path.

[0011] Preferably, step S4, which sequentially executes segmented locking, quantitative sliding energy dissipation, dual-path diversion bearing, and final-stage rigid limiting in a preset order, further includes the following steps: S4-1. After the main load-bearing rope enters the impact load zone, the first axial micro-segment locking body is first brought into contact with the outer surface of the main load-bearing rope to limit the initial impact displacement of the main load-bearing rope. S4-2. After the first axial micro-segment locking body restricts the initial impact displacement of the main bearing rope, the second axial micro-segment locking body makes delayed contact with the outer surface of the main bearing rope to form a secondary local clamping sequence that operates at different times from the first axial micro-segment locking body. S4-3. After the first axial micro-segment locking body and the second axial micro-segment locking body complete the secondary local clamping with staggered action, the shear release piece is broken, and the controlled sliding displacement of the main bearing rope within the preset length range is released. S4-4. After the main load-bearing rope completes the controlled sliding displacement within the preset length range, the bypass load switching component transfers part of the impact load of the main load-bearing rope to the accompanying constraint rope to form a dual-path diversion load of the main load-bearing rope and the accompanying constraint rope. S4-5. After the dual-path diversion bearing is formed, the stroke limit block is brought into contact with the end limit member of the main bearing rope to terminate the remaining displacement of the main bearing rope; S4-6. After the travel limit stop terminates the remaining displacement of the main load-bearing rope, the anchor point assembly maintains the end-loaded posture and keeps the main load-bearing rope and the accompanying constraint rope in a force diversion state until the impact response ends.

[0012] Preferably, the initial limiting of the main load-bearing rope by the first axial micro-segment locking body in S4-1 further includes the following steps: S4-1-1. Divide the first axial micro-segment locking body into a front locking tooth, a middle locking tooth and a rear locking tooth along the axial direction of the main bearing rope, and make the front locking tooth contact the outer surface of the main bearing rope before the middle locking tooth, and the middle locking tooth contact the outer surface of the main bearing rope before the rear locking tooth. S4-1-2. After the front locking teeth contact the outer surface of the main load-bearing rope, a shallow embedded clamping is first formed; after the middle locking teeth contact the outer surface of the main load-bearing rope, an enhanced clamping is formed; after the rear locking teeth contact the outer surface of the main load-bearing rope, an end-suppressing clamping is formed. S4-1-3. The contact depth of the front locking tooth, the middle locking tooth and the rear locking tooth increases along the axial direction of the main load-bearing rope, so that the initial impact displacement of the main load-bearing rope is decomposed into multiple short-stroke micro-displacements; S4-1-4. During the sequential release of the multiple short-stroke micro-displacements, the pressure zone of the surface fiber and the tension zone of the core fiber of the main bearing rope are alternately migrated along the axial direction. S4-1-5. During the alternating axial migration of the tension zone, an intermittent axial blocking sequence is formed between the first axial micro-segment locking body and the main load-bearing rope.

[0013] Preferably, in step S5, the load history of the rope is generated using a combined determination method based on the difference in strain rebound along the path, the residual amount of local bending, the residual elongation before and after impact, the cumulative value of slip displacement, the backlash of the anchor point assembly deflection angle, the action time sequence of the segmented locking assembly, and the load transfer amount of the accompanying constraint rope. Based on the determination result of the combined determination method, the main load-bearing rope is divided into a resettable section, a limited-use section, and a mandatory decommissioning section. Specifically, tension adjustment and configuration reset are performed on the resettable section, local cutting and re-weaving, end reconstruction and calibration verification are performed on the limited-use section, and the entire section is sealed and dismantled on the mandatory decommissioning section. Simultaneously, the accompanying constraint rope, slip modulation assembly and segmented locking assembly are checked, replaced and decommissioned according to their respective sections.

[0014] Compared with the prior art, the advantages of this invention are: (1) The protection time point is shifted from the passive response after the fall to before the actual fall displacement of the human body. By identifying the load migration relationship in advance and completing the main load rope configuration remodeling in advance, the free fall journey is shortened and the peak impact is reduced.

[0015] (2) The traditional fixed path force method is improved to a reconfigurable path force method of the main bearing rope inside the anchor point component. By changing the wrapping path, the number of direction reversals, the contact length and the friction interface pressure, the graded resistance modulation under different loading stages can be achieved.

[0016] (3) The traditional single-peak impact interception method is improved into a multi-peak misaligned impact modulation method that is executed sequentially by segmented locking, quantitative sliding energy consumption and final rigid limit, so that the impact load is changed from a single centralized transmission to a phased release and transmission.

[0017] (4) Improve the traditional single-path bearing method to a dual-path diversion bearing method in which the main bearing rope and the accompanying constraint rope work together, so that the main bearing rope undertakes the initial impact control and the accompanying constraint rope undertakes the subsequent impact diversion and swing constraint.

[0018] (5) The traditional judgment method based on single-point tension or single threshold triggering is improved into a joint judgment method along the rope based on axial micro-strain, local bending curvature, transient tension gradient, slip displacement and anchor point component attitude change, thereby improving the ability to identify the critical instability stage in advance.

[0019] (6) Improve the traditional disposal method of one-time overall scrapping or empirical reuse to a zoned decommissioning method based on the load history of the rope. By jointly judging the residual elongation, strain rebound difference and cumulative slip displacement of the main load-bearing rope after loading, the fine division of resettable section, limited reuse section and forced decommissioning section can be achieved. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall process of the intelligent safety rope multi-level protection method for high-altitude power operations according to the present invention. Detailed Implementation For examples, please refer to Figure 1 The intelligent safety rope multi-level protection method for high-altitude power operations includes the following steps: S1. Before the start of high-altitude power operations, the main load-bearing rope, accompanying restraint rope, anchor point assembly, sliding modulation assembly, segmented locking assembly, human body connection assembly, and distributed sensing unit along the rope are assembled into an integrated intelligent safety rope system. The initial force configuration of the intelligent safety rope system under the current high-altitude power operation conditions is established based on the column position, crossarm position, initial anchoring path of the insulated load-bearing rope, initial length of the accompanying restraint rope, installation posture of the anchor point assembly, and initial force position of the human body connection assembly. Specifically, before commencing high-altitude power operations, a work path model must be established based on the actual structure of the tower or frame being worked on. The work path model should include at least: the location of the tower support column; the location of the crossarm; the location of the insulator string; the location of the insulator string hardware; the location of the adjacent section of the conductor; the planned movement path of the workers; permitted anchoring locations; prohibited contact locations; and the permitted swing envelope.

[0021] Specifically, before climbing, the workers first fix the anchor point components to the predetermined anchoring positions. The anchor point components can adopt clamp-type, snap-on, plug-in, or hanging installation structures; in the case of power transmission tower operations, clamp-type or snap-on installation structures that can be quickly disassembled are preferred to accommodate tower components of different specifications.

[0022] Specifically, after installation, the main load-bearing rope is threaded through the anchor point assembly along a predetermined path, initially passing through the straight guide channel within the anchor point assembly. At this point, the main load-bearing rope does not enter the first, second, or third turnaround grooves, but maintains a free-following path with low resistance, ensuring minimal drag resistance for workers during normal movement.

[0023] Specifically, the accompanying restraint rope is connected to the human body connection assembly, and the accompanying restraint rope is initially in a relaxed following state. The initial length of the accompanying restraint rope is preset according to the working height, human standing position, and allowable swing envelope range, so that it does not actively bear load during normal standing, slight turning, and small-range lateral movement.

[0024] Specifically, the human body connection assembly is worn on the worker's body, and the position of the central connecting member is adjusted by the length adjustment connecting strap, so that the force center of the human body connection assembly in the initial state is located in the preset initial position between the waist and back connection and the shoulder connection, preferably in the lower part of the middle of the torso, so as to take into account both normal movement comfort and subsequent force transfer space.

[0025] Through the above settings, the initial force configuration of the intelligent safety rope system under the current power high-altitude operation conditions is established, which corresponds to the free following configuration in claim 1.

[0026] S2. During high-altitude power operations, the distributed sensing unit along the rope continuously collects the axial micro-strain, local bending curvature, transient tension gradient, slip displacement, and changes in the pressure contact area of ​​the main load-bearing rope along its length. Simultaneously, the deflection angle, swing direction, and attitude hysteresis of the anchor point assembly are collected. Combined with the spatial displacement trajectory of the human body connection assembly, the load migration relationship between the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly is divided into zones to form a three-level state set of early warning load zone, critical load zone, and impact load zone. Specifically, the distributed sensing units along the rope are deployed along the length of the main supporting rope. Preferably, the distributed sensing units along the rope adopt one of the following two methods: Implementation Method 1: Specifically, at least one distributed sensing optical fiber is embedded along the length direction between the outer wear-resistant braided sheath of the main load-bearing rope and the intermediate constraint braided layer to sense the axial strain change of the main load-bearing rope along the length; at the same time, curvature-sensitive optical fibers or bending-sensitive conductors are set on the local outer periphery of the main load-bearing rope to obtain the local bending curvature change.

[0027] Implementation Method 2: Specifically, multiple sensing nodes are spaced apart along the length of the main load-bearing rope. Each sensing node includes a micro-strain sensitive element, a micro-displacement sensitive element, and a local bending sensitive element. The multiple sensing nodes are arranged sequentially along the length to establish a sampling sequence along the main load-bearing rope.

[0028] In a preferred embodiment, the distributed sensing unit along the rope adopts a composite deployment method that combines fiber optic embedding with segmented node sensing to simultaneously ensure continuity and local response accuracy.

[0029] S3. When the three-level state set shows that the load state is shifting from the warning load area to the critical load area, before the human body undergoes substantial fall displacement, the sliding modulation component is driven to change the wrapping path, direction reversal number, contact length and friction interface pressure of the main load-bearing rope inside the anchor point component, and simultaneously shorten the effective working length of the accompanying constraint rope and adjust the force center position of the human body connection assembly, so that the intelligent safety rope system switches from the free following configuration to the limit release configuration, so as to complete the rope configuration remodeling before the fall impact peak is formed; S4. When the three-level state set shows that the load state has entered the impact load zone, the segmented locking, quantitative sliding energy dissipation, dual-path diversion load bearing and final rigid limit are executed in the preset order, so that the main load-bearing rope body is switched from a single continuous force path to a multi-node time-displaced force path, and the impact load is transmitted in segments along the axial direction of the main load-bearing rope body, dissipated along multiple interfaces inside the anchor point assembly, and diverted along the bypass of the accompanying constraint rope body, thereby transforming the single-peak impact process into a multi-peak displaced impact process. S5. After the impact response ends, based on the residual elongation of the main load-bearing rope, the difference in strain rebound along the line, the residual amount of local bending, the cumulative value of slip displacement, the hysteresis of the anchor point assembly deflection angle, the action sequence of the segmented locking assembly, and the load transfer amount of the accompanying constraint rope, the rope load history of this power high-altitude operation is generated. Based on the rope load history, the main load-bearing rope, the accompanying constraint rope, the slip modulation assembly, and the segmented locking assembly are divided into resettable sections, limited-use sections, and forced decommissioning sections to complete the structural verification and decommissioning determination after the power high-altitude operation.

[0030] Specifically, the integrated intelligent safety rope system includes: The main load-bearing rope is used to bear the main fall protection load for workers. Accompanying constraint ropes are used to bear swing restraint and impact diversion loads after the main load-bearing ropes enter the critical load state. Anchor point components are used to fix to tower columns, crossarm connection nodes, special anchoring components, or structural attachment points after insulation and isolation treatment, and are used to form the basic structure for path switching of the main load-bearing rope. The sliding modulation component is located inside the anchor point component or is fixedly connected to the anchor point component, and is used to change the force path and friction state of the main load-bearing rope during the load migration phase. The segmented locking component is installed on the downstream load-bearing path of the anchor point component to restrict the displacement of the main load-bearing rope in a time-sequential manner during the impact loading stage. Human body connection assembly, used to connect to the main body of the power high-altitude work safety belt worn by the worker; Distributed sensing units along the rope are deployed along the length of the main load-bearing rope to continuously sense changes in the load on the main load-bearing rope along its length.

[0031] Specifically, the main load-bearing rope preferably adopts a composite rope structure consisting of an outer wear-resistant braided sheath, an intermediate restraining braided layer, and an inner high-strength load-bearing fiber bundle. The outer wear-resistant braided sheath resists friction and wear at the tower corners, crossarm edges, and hardware contact areas. The intermediate restraining braided layer stabilizes the rope's cross-sectional shape, and the inner high-strength load-bearing fiber bundle bears the main axial tensile load. The inner high-strength load-bearing fiber bundle can be made of aramid fiber bundles, ultra-high molecular weight polyethylene fiber bundles, liquid crystal polymer fiber bundles, or combinations thereof.

[0032] Specifically, the accompanying restraint rope preferably adopts a restraint rope structure with a smaller diameter, lower elongation, and higher resilience consistency compared to the main load-bearing rope. One end of the rope is connected to the human body connection assembly, and the other end is connected to the anchor point assembly or bypass load switching component, so as to quickly enter the stress state during subsequent load transfer.

[0033] Specifically, the human body connection assembly includes a lumbar and back connection, a shoulder connection, a central convergence connector, and a length-adjustable connecting strap. The lumbar and back connection is used to connect with the worker's lumbar and back safety belt, the shoulder connection is used to connect with the worker's shoulder strap structure, the central convergence connector is located near the front of the worker's torso or the upper middle part of the torso, and the length-adjustable connecting strap is used to change the force ratio between the lumbar and back connection and the shoulder connection, thereby shifting the position of the force center of the human body connection assembly.

[0034] The determination of the loaded migration relationship partition in S2 further includes the following steps: S2-1. Divide the main load-bearing rope into the anchor point adjacent section, intermediate transition section, human body connection section and end response section along the length direction, and establish axial micro-strain sampling sequence, local bending curvature sampling sequence and slip displacement sampling sequence for the anchor point adjacent section, intermediate transition section, human body connection section and end response section respectively. S2-2. Time synchronization and phase registration are performed on the axial micro-strain sampling sequence to obtain the strain change rate, strain abrupt change point location and strain propagation time difference of the anchor point adjacent segment, intermediate transition segment, human body connection segment and end response segment; S2-3. Superimpose and register the local bending curvature sampling sequence and the slip displacement sampling sequence to identify local geometric abrupt change areas at the contact points between the main load-bearing rope and the tower corners, crossarm edges, insulator string hardware and anchor point components; S2-4. Synchronously map the deflection angle, swing direction, and attitude backlash of the anchor point assembly with the spatial displacement trajectory of the human body connection assembly to determine the outward swing direction, downward direction, and rotation direction of the human body connection assembly relative to the anchor point assembly. S2-5. Calculate the current load migration direction and load migration rate based on the forward movement of the strain abrupt change point in the section adjacent to the anchor point, the increase in the tensile gradient of the human body connection section, the increase in the sliding displacement of the intermediate transition section, and the change in the deflection angle of the anchor point assembly. S2-6. When the increase in tensile gradient of the human body connection segment increases synchronously with the forward movement of the strain mutation point of the adjacent segment, and the spatial displacement trajectory of the human body connection assembly deviates from the preset safe trajectory, the current load state is determined to be the critical load zone; when the increase in sliding displacement of the intermediate transition segment exceeds the preset energy dissipation starting displacement, and the change in deflection angle of the anchor component corresponds synchronously with the falling direction of the human body connection assembly, the current load state is determined to be the impact load zone.

[0035] Specifically, as in claim 2, the main load-bearing rope is divided along its length into: Anchor point proximity segment: Located near the anchor point assembly, used to focus on sensing load changes at the anchor point input end; Intermediate transition section: The intermediate rope section located between the anchor point assembly and the human body connection assembly, used to sense slippage and strain propagation along the path; Human body connection segment: The rope segment located near the human body connection assembly is used to sense the direct tensile force change when the human body becomes unstable; End response segment: Located at the end of the system or the end region of the displacement buffer, it is used to sense the end displacement response and the state of the impact tail segment.

[0036] Specifically, within each segment, the following are established: axial micro-strain sampling sequence; local bending curvature sampling sequence; and slip displacement sampling sequence.

[0037] Specifically, axial micro-strain is obtained through strain-sensitive units in the rope-distributed sensing unit; Local bending curvature is obtained through the attitude difference, displacement difference, or curvature-sensitive unit output between adjacent sampling points; The transient tensile force gradient is obtained by converting the rate of change of axial micro-strain per unit time. Sliding displacement is obtained through rope displacement marker segments, roller displacement encoders, or displacement triggers set inside the anchor point assembly; The change in the pressure-bearing contact area is calculated by the change in the contact pressure-sensitive sheet, contact conductive array, or contact length in the contact area within the anchor point assembly.

[0038] Specifically, the deflection angle, swing direction, and attitude backlash of the anchor point assembly can be obtained by a miniature attitude measurement unit installed on the anchor point assembly, and the spatial displacement trajectory of the human body connection assembly can be obtained by a pose measurement unit installed on the human body connection assembly or by back-calculation of the combined displacement of the main load-bearing rope and the accompanying constraint rope.

[0039] Specifically, time synchronization and phase registration are performed on the axial micro-strain sampling sequence to obtain: the strain change rate of the segment near the anchor point; the strain change rate of the intermediate transition segment; the strain change rate of the human body connection segment; the strain change rate of the end response segment; the location of the strain abrupt change point in each segment; and the strain propagation time difference between each segment.

[0040] Specifically, the sampling sequences of local bending curvature and sliding displacement are superimposed and registered to identify local geometric abrupt change areas at the contact points between the main load-bearing rope and the corners of the tower, the edges of the crossarm, the insulator string hardware, and the anchor point assembly.

[0041] When the main load-bearing rope experiences a sudden increase in bending curvature and a simultaneous change in slip displacement in a local geometric abrupt change zone, it is determined that there is a tendency for load path transfer or dangerous frictional contact at that location.

[0042] Specifically, the deflection angle, swing direction, and attitude backlash of the anchor point assembly are synchronously mapped with the spatial displacement trajectory of the human body connection assembly to obtain the following: Outward swing direction; downward swing direction; swing rotation direction.

[0043] Furthermore, based on: the forward shift of the strain abrupt change point in the adjacent section of the anchor point; the increase in the tensile gradient of the human body connection section; the incremental sliding displacement of the intermediate transition section; and the change in the deflection angle of the anchor point assembly, the current load migration direction and load migration rate are calculated.

[0044] In a preferred embodiment, the following determination logic is set: When the increase in tensile gradient of the human body connection segment increases synchronously with the forward movement of the strain mutation point of the segment adjacent to the anchor point, and the spatial displacement trajectory of the human body connection assembly deviates from the preset safety trajectory, the current load state is determined to be the critical load zone. When the incremental sliding displacement of the intermediate transition section exceeds the preset energy consumption starting displacement, and the change in the deflection angle of the anchor point component corresponds synchronously with the falling direction of the human body connection assembly, the current load state is determined to be the impact load zone. If any of the above conditions are not met, the current load status will be determined as a warning load zone.

[0045] Specifically, the preset safety trajectory is pre-set based on the structural position of the working tower, the installation position of the anchor components, and the allowable swing envelope range of the human body, in order to distinguish between normal working displacement and dangerous unstable displacement.

[0046] In S3, the sliding modulation component adopts a combination configuration of multi-folding path cavity, radial clamping ring, stepped friction lining and path switching guide. The main load-bearing rope changes from an initial straight path to a path with multiple directional reversals inside the anchor point component. The accompanying constraint rope changes from a relaxed following state to a pre-tensioned limiting state at the human body connection assembly. The force center of the human body connection assembly moves from a position away from the center of the human torso to a position close to the center of the human torso. This allows the main load-bearing rope, the accompanying constraint rope and the human body connection assembly to complete pre-load rebalancing before the human body undergoes continuous downward displacement, and simultaneously reduces the swing inertia and free fall stroke during the initial instability process of the human body.

[0047] The switching of the main load-bearing rope from a free-following configuration to a restrained and slow-release configuration in S3 further includes the following steps: S3-1. The main load-bearing rope is switched from the straight guide channel of the anchor point assembly and introduced into the first return groove, the second return groove and the third return groove, so that the main load-bearing rope forms at least two directional reversals and at least three contact and covering paths inside the anchor point assembly; S3-2. By changing the incident and exit angles of the main load-bearing rope as it enters the first, second, and third turnaround grooves through the path switching guide, the main load-bearing rope forms a path distribution within the anchor point assembly that features a steep turn at the front, a gentle turn in the middle, and a final section that suppresses turning. S3-3. Different contact pressures are applied to the main load-bearing rope at the inlet of the first turnaround groove, the outlet of the second turnaround groove, and the middle section of the third turnaround groove by radial clamping rings, so that the main load-bearing rope forms a progressive frictional resistance distribution along the direction of motion. S3-4. After the main load-bearing rope completes multiple directional reversals and establishes a progressive frictional resistance distribution, the effective working length of the accompanying constraint rope is simultaneously shortened, so that the accompanying constraint rope switches from a human-following state to a swinging constraint state. S3-5. After the constraint rope switches to the swing constraint state, adjust the force ratio of the human body connection assembly relative to the waist and back connection position and the shoulder connection position of the worker, so that the force center of the human body connection assembly shifts to the center of the human torso.

[0048] The establishment of the progressive frictional resistance distribution in S3-3 further includes the following steps: S3-3-1. A first friction lining is set at the position corresponding to the first turnaround groove, a second friction lining is set at the position corresponding to the second turnaround groove, and a third friction lining is set at the position corresponding to the third turnaround groove. The first friction lining, the second friction lining, and the third friction lining are arranged to form an initial movement limiting zone, a stable energy dissipation zone, and an end suppression zone in sequence along the movement direction of the main bearing rope. S3-3-2. To cause the main load-bearing rope to generate initial slack slip in the initial limiting zone, quantitative slip in the stable energy dissipation zone, and final stage suppression slip in the end suppression zone; S3-3-3. By adjusting the axial displacement of the radial clamping ring, the difference between the contact pressure corresponding to the first friction lining, the contact pressure corresponding to the second friction lining, and the contact pressure corresponding to the third friction lining is adjusted, so that the main bearing rope body experiences continuous resistance switching of initial movement restriction, stable slippage, and end suppression in the same loading process. S3-3-4. During the process of the main bearing rope passing through the initial movement restriction zone, the stable energy dissipation zone and the end suppression zone, the pressure contact zone between the main bearing rope and the first friction lining, the second friction lining and the third friction lining are moved sequentially along the direction of motion. S3-3-5. During the migration of the pressure contact area along the direction of movement, the location of local heat accumulation generated by the main load-bearing rope inside the anchor point assembly is limited to the preset heat dissipation area of ​​the anchor point assembly.

[0049] Specifically, the sliding modulation assembly includes: a multi-foldback path cavity; a path switching guide; a radial clamping ring; a first friction liner; a second friction liner; and a third friction liner.

[0050] Specifically, the multi-reversal path cavity is located inside the anchor point assembly and is a closed or semi-closed guide cavity, which sequentially forms: a straight guide channel; a first reversal groove; a second reversal groove; and a third reversal groove.

[0051] Specifically, the first, second, and third reversal grooves are arranged sequentially along the potential movement direction of the main load-bearing rope, wherein: the first reversal groove is used to establish the initial direction reversal; the second reversal groove is used to establish a stable slip path in the middle section; and the third reversal groove is used to establish a slip-suppressing path in the final section.

[0052] Specifically, in the free-following configuration, the main load-bearing rope maintains a low-resistance straight or near-straight force path through a straight guide channel.

[0053] When the load condition shifts from the warning load area to the critical load area, the path switching guide is activated, causing the main load-bearing rope to switch from the straight guide channel to the first turnaround groove, the second turnaround groove, and the third turnaround groove.

[0054] In a preferred embodiment, the path switching guide adopts a swing arm guide structure. Specifically, the swing arm guide is initially located in the bypass position. When the load migration rate exceeds a preset threshold, the swing arm guide rotates and guides the main load-bearing rope into the inlet position of the first turnaround groove.

[0055] In another embodiment, the path switching guide adopts a slider-fork type guide structure. Specifically, after receiving a trigger signal, the slider-fork type guide moves laterally, pushing the main load-bearing rope from the straight guide channel into the first return groove.

[0056] Specifically, after the main load-bearing rope enters the first, second, and third turnaround grooves, it forms at least two directional reversals and at least three contact wrapping paths inside the anchor point assembly.

[0057] Specifically, the path switching guide component changes the incident and exit angles of the main load-bearing rope as it enters the first, second, and third turnaround slots.

[0058] In a preferred embodiment: When the main load-bearing rope enters the first turning groove, it forms a large turning angle to create a steep turn at the front. When the main load-bearing rope enters the second turnaround groove, it forms a gentler turning angle to create a gentler turn in the middle section; When the main load-bearing rope enters the third turnaround groove, it forms a controlled and suppressed angle to create a final suppressed steering.

[0059] The above settings enable the main load-bearing rope to have different path resistance and different force steering characteristics in different path segments.

[0060] Specifically, the first friction lining is disposed at the corresponding position of the first folding groove, the second friction lining is disposed at the corresponding position of the second folding groove, and the third friction lining is disposed at the corresponding position of the third folding groove.

[0061] In a preferred embodiment: The first friction liner uses a surface with a high static friction coefficient to establish the initial movement-limiting zone; The second friction liner uses a surface with a relatively stable dynamic friction coefficient to establish a stable energy dissipation zone; The third friction liner uses a high-damping composite friction surface to establish an end-suppression zone.

[0062] Specifically, the radial clamping rings act on: the inlet position of the first return groove; the outlet position of the second return groove; and the middle section position of the third return groove.

[0063] The radial clamping ring preferably adopts a screw-driven clamping structure or an eccentric cam clamping structure.

[0064] In a preferred embodiment, the radial clamping ring is pressed radially toward the main bearing rope by a screw drive, so that a difference is formed between the contact pressure corresponding to the first friction lining, the contact pressure corresponding to the second friction lining, and the contact pressure corresponding to the third friction lining, thereby establishing a progressive friction resistance distribution.

[0065] Specifically, the main load-bearing rope is made to: generate initial slippage in the initial limiting zone; generate quantitative slippage in the stable energy dissipation zone; and generate final stage suppression slippage in the end suppression zone.

[0066] During the loading process, the pressure contact area between the main load-bearing rope and the first, second and third friction linings migrates sequentially along the direction of motion, so that the location of friction energy dissipation moves backward segment by segment as the impact propagates, rather than being concentrated at a single contact point.

[0067] Specifically, the anchor point assembly has a preset heat dissipation area located near the second and third foldback slots.

[0068] The pre-designed heat dissipation zone can adopt at least one of the following structures: thermally conductive metal insert, heat dissipation fins, thermally conductive liner, or ventilation channel, so as to concentrate and discharge the local heat accumulation generated by the main load-bearing rope in the stable energy dissipation zone and the end suppression zone, thereby avoiding the random diffusion of local thermal damage along the rope.

[0069] Specifically, after the main load-bearing rope completes multiple directional reversals and establishes a progressive frictional resistance distribution, the effective working length of the accompanying constraint rope is shortened simultaneously, so that the accompanying constraint rope switches from a relaxed following state to a pre-tensioned limiting state or a swinging constraint state.

[0070] In a preferred embodiment, the effective working length of the accompanying restraint rope is shortened by a releasable length adjuster; the releasable length adjuster may be a slip-lock type, ratchet type, or limit buckle type length adjustment structure.

[0071] Furthermore, after the constraint rope switches to a swing constraint state, the force ratio of the human body connection assembly relative to the waist and back connection position and the shoulder connection position of the worker is adjusted, so that the position of the central converging connector is moved up or forward, thereby shifting the force center of the human body connection assembly from a position away from the center of the human torso to a position close to the center of the human torso.

[0072] The above settings reduce the following for workers during the initial instability phase: free fall distance, outward swing amplitude, and moment of inertia.

[0073] In S4, the segmented locking assembly adopts a series trigger configuration of a first axial micro-segment locking body, a second axial micro-segment locking body, a shear release plate, a bypass load switching component, and a travel limit stop. After the main load-bearing rope enters the impact load zone, it is first initially limited by the first axial micro-segment locking body, then delayed by the second axial micro-segment locking body. Subsequently, the shear release plate controls the quantitative sliding length of the main load-bearing rope, and the bypass load switching component transfers part of the impact load to the accompanying constraint rope. Finally, the travel limit stop terminates the remaining displacement of the main load-bearing rope, so that the peak impact load is divided into multiple sequential local load peaks along the time axis, and the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly together form an impact peak transmission path.

[0074] S4, which executes segmented locking, quantitative sliding energy dissipation, dual-path diversion bearing, and final-stage rigid limit in a preset order, further includes the following steps: S4-1. After the main load-bearing rope enters the impact load zone, the first axial micro-segment locking body is first brought into contact with the outer surface of the main load-bearing rope to limit the initial impact displacement of the main load-bearing rope. S4-2. After the first axial micro-segment locking body restricts the initial impact displacement of the main load-bearing rope, the second axial micro-segment locking body makes delayed contact with the outer surface of the main load-bearing rope to form a secondary local clamping sequence that is staggered with the action of the first axial micro-segment locking body. S4-3. After the first axial micro-segment locking body and the second axial micro-segment locking body complete the secondary local clamping with staggered action, the shear release plate breaks and the main bearing rope is released within the preset length range of controlled sliding displacement. S4-4. After the main load-bearing rope completes the controlled sliding displacement within the preset length range, the bypass load switching component transfers part of the impact load of the main load-bearing rope to the accompanying constraint rope, so as to form a dual-path diversion load of the main load-bearing rope and the accompanying constraint rope. S4-5. After forming a dual-path diversion load, make the stroke limit stop block contact the end limit piece of the main load rope to terminate the remaining displacement of the main load rope. S4-6. After the travel limit stop stops the remaining displacement of the main load-bearing rope, the anchor point assembly maintains the end-loaded posture and keeps the force diversion state between the main load-bearing rope and the accompanying constraint rope until the impact response ends.

[0075] The initial limiting of the main load-bearing rope by the first axial micro-segment locking body in S4-1 also includes the following steps: S4-1-1. Divide the first axial micro-segment locking body into a front locking tooth, a middle locking tooth and a rear locking tooth along the axial direction of the main bearing rope, and make the front locking tooth contact the outer surface of the main bearing rope before the middle locking tooth, and the middle locking tooth contact the outer surface of the main bearing rope before the rear locking tooth. S4-1-2. After the front locking teeth contact the outer surface of the main load-bearing rope, a shallow embedded clamping is formed first; after the middle locking teeth contact the outer surface of the main load-bearing rope, an enhanced clamping is formed; after the rear locking teeth contact the outer surface of the main load-bearing rope, an end-suppressing clamping is formed. S4-1-3. Make the contact depth of the front locking teeth, middle locking teeth and rear locking teeth increase along the axial direction of the main load-bearing rope, so that the initial impact displacement of the main load-bearing rope is decomposed into multiple short-stroke micro-displacements. S4-1-4. During the sequential release of multiple short-stroke micro-displacements, the compression zone of the surface fiber and the tension zone of the core fiber of the main bearing rope alternately migrate along the axial direction. S4-1-5. During the alternating migration of the tension zone along the axial direction, an intermittent axial blocking sequence is formed between the first axial micro-segment locking body and the main load-bearing rope.

[0076] Specifically, when the three-level state set indicates that the load condition has entered the impact load zone, the system enters the impact peak protection stage.

[0077] Specifically, the segmented locking assembly includes: a first axial micro-segment locking body; a second axial micro-segment locking body; a shear release plate; a bypass load switching component; a travel limit stop; and a main load rope end limit component.

[0078] Specifically, the first axial micro-segment locking body and the second axial micro-segment locking body are arranged sequentially back and forth along the axial direction of the main load-bearing rope. The shear release plate is set at the quantitative sliding trigger position behind the two, the bypass load switching component is set downstream of the shear release plate, and the travel limit block is set on the end limit path of the main load-bearing rope.

[0079] Specifically, when the main load-bearing rope enters the impact load zone, the first axial micro-segment locking body first contacts the outer surface of the main load-bearing rope to limit the initial impact displacement of the main load-bearing rope.

[0080] Specifically, the first axial micro-segment locking body is divided along the axial direction of the main load-bearing rope into: front locking teeth; middle locking teeth; and rear locking teeth.

[0081] Among them, the front locking teeth contact the outer surface of the main load-bearing rope before the middle locking teeth, and the middle locking teeth contact the outer surface of the main load-bearing rope before the rear locking teeth.

[0082] Specifically: after the first section of the locking teeth contacts the outer surface of the main load-bearing rope, a shallow embedded clamping is formed; after the second section of the locking teeth contacts the outer surface of the main load-bearing rope, an enhanced clamping is formed; and after the third section of the locking teeth contacts the outer surface of the main load-bearing rope, an end-suppressing clamping is formed.

[0083] In a preferred embodiment, the contact depths of the front locking teeth, the middle locking teeth, and the rear locking teeth increase axially along the main load-bearing rope, thereby decomposing the initial impact displacement of the main load-bearing rope into multiple short-stroke micro-displacements.

[0084] During the sequential release of the aforementioned multiple short-stroke micro-displacements, the pressure zone of the surface fiber and the tension zone of the core fiber of the main load-bearing rope alternately migrate along the axial direction, thereby forming an intermittent axial retardation sequence between the first axial micro-segment locking body and the main load-bearing rope.

[0085] Specifically, after the first axial micro-segment locking body restricts the initial impact displacement of the main load-bearing rope, the second axial micro-segment locking body makes delayed contact with the outer surface of the main load-bearing rope to form a secondary local clamping sequence that operates at different times than the first axial micro-segment locking body.

[0086] In a preferred embodiment, the second axial micro-segment locking body achieves delayed contact through a higher trigger stroke or a lower operating speed; In another embodiment, the second axial micro-segment locking body achieves delayed action through the threshold difference of the independently pre-tightened elastic element.

[0087] With the above configuration, the first axial micro-segment locking body and the second axial micro-segment locking body act on the main load-bearing rope at different times, thereby decomposing the original single centralized locking process into two time-displaced local locking processes.

[0088] Specifically, after the first axial micro-segment locking body and the second axial micro-segment locking body complete the secondary local clamping with staggered action, the shear release plate breaks and releases the controlled sliding displacement of the main bearing rope within a preset length range.

[0089] Specifically, the shear release plate is fixedly connected between the displacement constraint mechanism of the main load-bearing rope and the load-bearing frame. Its shear cross-sectional shape, thickness and material selection are preset so that it will break when the preset shear load is reached.

[0090] When the shear release plate breaks, the main load-bearing rope will produce a quantitative slip displacement within a preset length range. This displacement range is jointly limited by: the release stroke after the shear release plate breaks; the allowable slip length of the main load-bearing rope within the stable energy dissipation zone; and the final stop position of the stroke limit block.

[0091] With the above settings, the impact displacement release process of the main load-bearing rope is changed from random slippage to controlled quantitative slippage.

[0092] Specifically, after the main load-bearing rope completes the controlled sliding displacement within a preset length range, the bypass load switching component transfers part of the impact load of the main load-bearing rope to the accompanying constraint rope, thereby forming a dual-path diversion load of the main load-bearing rope and the accompanying constraint rope.

[0093] In a preferred embodiment, the bypass load switching component adopts a swing-arm type load switching structure. Specifically, when the main load rope displacement reaches the preset switching position, the swing-arm type load switching structure rotates and pulls the accompanying constraint rope into the force path, causing the accompanying constraint rope to switch from a swing constraint state to a secondary load state.

[0094] In another embodiment, the bypass load switching component adopts a double-groove guide switching structure, which allows the accompanying constraint rope to gradually bear part of the impact load through path switching.

[0095] With the above setup, the main load-bearing rope is responsible for initial impact control, while the accompanying constraint rope is responsible for subsequent impact diversion and attitude stabilization.

[0096] Specifically, after the dual-path diversion load is formed, the travel limit block is brought into contact with the end limit component of the main load rope to terminate the remaining displacement of the main load rope.

[0097] Specifically, the travel limit stop can be a stepped stop, a wedge stop, or a surface contact stop structure; the end limit component of the main load-bearing rope can be a sleeve limit component, an end crimping limit component, or an enlarged diameter limit head structure.

[0098] When the travel limit stop comes into contact with the end limit component of the main load-bearing rope, the remaining displacement of the main load-bearing rope is terminated, the anchor point assembly maintains the end-loaded posture, and maintains the force diversion state between the main load-bearing rope and the accompanying constraint rope until the impact response ends.

[0099] Through the above series of actions, the original single-peak impact process is transformed into: The first local load peak formed by the first axial micro-segment locking body; The second local load peak is formed by the second axial micro-segment locking body; The third local load peak formed during the quantitative slip phase after the shear release plate fractures; The final load peak formed when the travel limit stop terminates the displacement; This results in a multi-peaked dislocation impact process distributed along the time axis.

[0100] In S5, the load history of the rope is generated by a joint determination method based on the difference in strain rebound along the path, the residual amount of local bending, the residual elongation before and after impact, the cumulative value of slip displacement, the backlash of the anchor point component deflection angle, the action time sequence of the segmented locking component, and the load transfer amount of the accompanying constraint rope. Based on the determination results of the joint determination method, the main load-bearing rope is divided into resettable sections, limited-use sections, and mandatory decommissioning sections. Among them, tension adjustment and configuration reset are implemented for resettable sections, partial cutting and re-weaving, end reconstruction and calibration verification are implemented for limited-use sections, and the entire section is sealed and dismantled for mandatory decommissioning sections. At the same time, the accompanying constraint rope, slip modulation component and segmented locking component are checked, replaced and decommissioned in the corresponding sections.

[0101] Specifically, after the impact response ends, the system enters the load history generation and decommissioning determination phase.

[0102] Specifically, the system summarizes the following parameters during this loading process: strain rebound difference along the path; residual amount of local bending; residual elongation before and after impact; cumulative value of sliding displacement; hysteresis of anchor point assembly deflection angle; time sequence of segmented locking assembly action; and load transfer amount of the accompanying constraint rope.

[0103] Among them, the strain-rebound difference along the friction is used to reflect the degree of inconsistency in the elastic recovery of different sections of the main load-bearing rope after being loaded; Local bending residual amount is used to reflect the degree of permanent deformation of the main load-bearing rope at the corners of the tower, the edges of the crossarm, the contact points of the insulator string hardware and the anchor assembly; The residual elongation before and after impact is used to reflect the overall axial plastic elongation of the main load-bearing rope. The cumulative slip displacement value is used to reflect the total energy released by the main load-bearing rope during this impact. The anchor point assembly deflection angle hysteresis is used to reflect the structural return deviation of the anchor point assembly after impact. The segmented locking component action time sequence is used to reflect the sequence and duration of each level of protective action; The load transfer of the accompanying restraint rope is used to reflect the actual load ratio of the accompanying restraint rope during the impact diversion process.

[0104] Based on the above parameters, the load history of the rope for this high-altitude power operation is generated.

[0105] Specifically, based on the load history of the rope, the main load-bearing rope is divided into: resettable sections; limited-use sections; and mandatory decommissioning sections.

[0106] Among them: when the difference in strain rebound, local bending residue and residual elongation of a certain section are all lower than the first preset threshold, the section is determined to be a resettable section; When at least one parameter of a certain segment is higher than the first preset threshold and lower than the second preset threshold, the segment is determined to be a limited reuse segment. When at least one parameter of a certain segment reaches or exceeds the second preset threshold, the segment is determined to be a mandatory retirement segment.

[0107] Specifically, for the resettable section, the following procedures are performed: tension adjustment; configuration reset; surface inspection.

[0108] Specifically, for sections with limited reuse, the following measures are implemented: partial removal and re-editing; end reconstruction; calibration verification; and re-identification of the number of uses.

[0109] Specifically, the following measures will be implemented for the mandatory decommissioning sections: complete sealing and dismantling; independent marking; and prohibition from re-enlisting for high-altitude load-bearing use.

[0110] At the same time, the accompanying restraint rope, sliding modulation component and segmented locking component are checked, replaced and decommissioned in corresponding sections to ensure the protection consistency of the entire system before the next high-altitude power operation.

[0111] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and modifications can be made to the present invention without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-level protection method for intelligent safety ropes in high-altitude power operations, characterized in that: The intelligent safety rope multi-level protection method for high-altitude power operations includes the following steps: S1. Before the commencement of high-altitude power operations, the main load-bearing rope, accompanying restraint rope, anchor point assembly, sliding modulation assembly, segmented locking assembly, human body connection assembly, and distributed sensing unit along the rope are assembled into an integrated intelligent safety rope system. The initial force configuration of the intelligent safety rope system under the current high-altitude power operation conditions is established by presetting the column position, crossarm position, initial anchoring path of the insulated load-bearing rope, initial length of the accompanying restraint rope, installation posture of the anchor point assembly, and initial force position of the human body connection assembly. S2. During high-altitude power operations, the distributed sensing unit along the rope continuously collects the axial micro-strain, local bending curvature, transient tension gradient, slip displacement, and changes in the pressure contact area of ​​the main load-bearing rope along its length. Simultaneously, it collects the deflection angle, swing direction, and attitude hysteresis of the anchor point assembly. Combined with the spatial displacement trajectory of the human body connection assembly, the load migration relationship between the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly is divided into zones to form a three-level state set of early warning load zone, critical load zone, and impact load zone. S3. When the three-level state set shows that the load state is shifting from the warning load area to the critical load area, before the human body undergoes substantial fall displacement, the sliding modulation component is driven to change the wrapping path, direction reversal number, contact length and friction interface pressure of the main load-bearing rope inside the anchor point component, and simultaneously shorten the effective working length of the accompanying constraint rope and adjust the force center position of the human body connection assembly, so that the intelligent safety rope system switches from a free following configuration to a limited release configuration, so as to complete the rope configuration remodeling before the fall impact peak is formed; S4. When the three-level state set shows that the load state has entered the impact load zone, segmented locking, quantitative sliding energy dissipation, dual-path diversion bearing and final rigid limit are executed in a preset order, so that the main bearing rope body is switched from a single continuous force path to a multi-node time-displaced force path, and the impact load is transmitted segmentally along the axial direction of the main bearing rope body, dissipated along the multiple interfaces inside the anchor point assembly, and diverted along the bypass of the accompanying constraint rope body, thereby transforming the single-peak impact process into a multi-peak displaced impact process. S5. After the impact response ends, based on the residual elongation of the main load-bearing rope, the difference in strain rebound along the line, the residual amount of local bending, the cumulative value of slip displacement, the hysteresis of the anchor point assembly deflection angle, the action sequence of the segmented locking assembly, and the load transfer amount of the accompanying constraint rope, a rope load history for this power high-altitude operation is generated. Based on the rope load history, the main load-bearing rope, the accompanying constraint rope, the slip modulation assembly, and the segmented locking assembly are divided into resettable sections, limited-use sections, and forced decommissioning sections to complete the structural review and decommissioning determination after the power high-altitude operation.

2. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 1, characterized in that, The load migration relationship partition determination in S2 further includes the following steps: S2-1. Divide the main load-bearing rope into an anchor point adjacent section, an intermediate transition section, a human body connection section and an end response section along the length direction, and establish axial micro-strain sampling sequences, local bending curvature sampling sequences and slip displacement sampling sequences for the anchor point adjacent section, the intermediate transition section, the human body connection section and the end response section respectively; S2-2. Perform time synchronization and phase registration on the axial micro-strain sampling sequence to obtain the strain change rate, strain abrupt change point location, and strain propagation time difference of the anchor point adjacent segment, the intermediate transition segment, the human body connection segment, and the end response segment; S2-3. Superimpose and register the local bending curvature sampling sequence with the slip displacement sampling sequence to identify local geometric abrupt change areas at the contact positions of the main load-bearing rope with the tower corners, crossarm edges, insulator string hardware, and anchor point components; S2-4. Synchronously map the deflection angle, swing direction, and attitude backlash of the anchor point assembly with the spatial displacement trajectory of the human body connection assembly to determine the outward swing direction, downward direction, and rotation direction of the human body connection assembly relative to the anchor point assembly; S2-5. Calculate the current load migration direction and load migration rate based on the forward movement of the strain abrupt change point of the adjacent segment of the anchor point, the increase of the tensile gradient of the human body connection segment, the increase of the sliding displacement of the intermediate transition segment, and the change of the deflection angle of the anchor point assembly. S2-6. When the increase in tensile gradient of the human body connection segment increases synchronously with the forward movement of the strain mutation point of the segment adjacent to the anchor point, and the spatial displacement trajectory of the human body connection assembly deviates from the preset safe trajectory, the current load state is determined as the critical load zone; when the increase in sliding displacement of the intermediate transition segment exceeds the preset energy dissipation starting displacement, and the change in deflection angle of the anchor point component corresponds synchronously with the falling direction of the human body connection assembly, the current load state is determined as the impact load zone.

3. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 1, characterized in that, In S3, the sliding modulation assembly adopts a combination configuration of multi-folding path cavity, radial clamping ring, stepped friction lining and path switching guide. The main load-bearing rope changes from an initial straight path to a multiple-direction reversal path inside the anchor point assembly. The accompanying constraint rope changes from a relaxed following state to a pre-tensioned limiting state at the human body connection assembly. The force center of the human body connection assembly moves from a position away from the center of the human torso to a position close to the center of the human torso. This allows the main load-bearing rope, the accompanying constraint rope and the human body connection assembly to complete pre-load rebalancing before the human body undergoes continuous downward displacement, and simultaneously reduces the swing inertia and free fall stroke during the initial instability process of the human body.

4. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 3, characterized in that, The switching of the main load-bearing rope from a free-following configuration to a limited-release configuration in step S3 further includes the following steps: S3-1. The main load-bearing rope is switched from the straight guide channel of the anchor point assembly and introduced into the first return groove, the second return groove and the third return groove, so that the main load-bearing rope forms at least two directional reversals and at least three contact wrapping paths inside the anchor point assembly; S3-2. By changing the incident angle and exit angle of the main bearing rope entering the first turnaround groove, the second turnaround groove and the third turnaround groove through the path switching guide, the main bearing rope forms a path distribution with a steep turn at the front, a gentle turn in the middle and a suppressed turn at the end inside the anchor point assembly; S3-3. Different contact pressures are applied to the main bearing rope at the inlet position of the first turnaround groove, the outlet position of the second turnaround groove, and the middle position of the third turnaround groove by the radial clamping ring, so that the main bearing rope forms a progressive friction resistance distribution along the direction of movement; S3-4. After the main load-bearing rope completes the multiple directional reversals and establishes the progressive frictional resistance distribution, the effective working length of the accompanying constraint rope is simultaneously shortened, so that the accompanying constraint rope switches from the human body following state to the swinging constraint state. S3-5. After the accompanying constraint rope switches to the swing constraint state, adjust the force ratio of the human body connection assembly relative to the waist and back connection position and the shoulder connection position of the worker, so that the force center of the human body connection assembly shifts to the center position of the human torso.

5. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 4, characterized in that, The establishment of the progressive frictional resistance distribution in S3-3 further includes the following steps: S3-3-1. A first friction liner is provided at the position corresponding to the first return groove, a second friction liner is provided at the position corresponding to the second return groove, and a third friction liner is provided at the position corresponding to the third return groove, and the first friction liner, the second friction liner and the third friction liner are arranged to form an initial movement limiting zone, a stable energy dissipation zone and an end suppression zone in sequence along the movement direction of the main bearing rope. S3-3-2. The main bearing rope is made to generate initial slack slip in the initial limiting zone, quantitative slip in the stable energy dissipation zone, and final stage inhibited slip in the end inhibition zone; S3-3-3. The difference between the contact pressure corresponding to the first friction lining, the contact pressure corresponding to the second friction lining, and the contact pressure corresponding to the third friction lining is adjusted by the axial displacement of the radial clamping ring, so that the main bearing rope undergoes continuous resistance switching of initial movement restriction, stable slippage, and end suppression in the same loading process. S3-3-4. During the process of the main bearing rope passing through the initial movement limiting zone, the stable energy dissipation zone and the end suppression zone, the pressure contact area between the main bearing rope and the first friction lining, the second friction lining and the third friction lining are moved sequentially along the direction of movement; S3-3-5. During the migration of the pressure contact area along the direction of movement, the location of local heat accumulation generated by the main bearing rope inside the anchor point assembly is restricted to the preset heat dissipation area of ​​the anchor point assembly.

6. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 1, characterized in that, In step S4, the segmented locking assembly adopts a series-triggered configuration of a first axial micro-segment locking body, a second axial micro-segment locking body, a shear release plate, a bypass load switching component, and a travel limit stop. After the main load-bearing rope enters the impact load zone, it is first initially limited by the first axial micro-segment locking body, then delayed by the second axial micro-segment locking body. Subsequently, the shear release plate controls the quantitative sliding length of the main load-bearing rope, and the bypass load switching component transfers part of the impact load to the accompanying constraint rope. Finally, the travel limit stop terminates the remaining displacement of the main load-bearing rope, so that the peak impact load is divided into multiple sequential local load peaks along the time axis, and the main load-bearing rope, the accompanying constraint rope, and the anchor point assembly together form an impact peak transmission path.

7. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 6, characterized in that, S4, which sequentially executes segmented locking, quantitative sliding energy dissipation, dual-path diversion bearing, and final-stage rigid limit according to a preset order, further includes the following steps: S4-1. After the main load-bearing rope enters the impact load zone, the first axial micro-segment locking body is first brought into contact with the outer surface of the main load-bearing rope to limit the initial impact displacement of the main load-bearing rope. S4-2. After the first axial micro-segment locking body restricts the initial impact displacement of the main bearing rope, the second axial micro-segment locking body makes delayed contact with the outer surface of the main bearing rope to form a secondary local clamping sequence that operates at different times from the first axial micro-segment locking body. S4-3. After the first axial micro-segment locking body and the second axial micro-segment locking body complete the secondary local clamping with staggered action, the shear release piece is broken, and the controlled sliding displacement of the main bearing rope within the preset length range is released. S4-4. After the main load-bearing rope completes the controlled sliding displacement within the preset length range, the bypass load switching component transfers part of the impact load of the main load-bearing rope to the accompanying constraint rope to form a dual-path diversion load of the main load-bearing rope and the accompanying constraint rope. S4-5. After the dual-path diversion bearing is formed, the stroke limit block is brought into contact with the end limit member of the main bearing rope to terminate the remaining displacement of the main bearing rope; S4-6. After the travel limit stop terminates the remaining displacement of the main load-bearing rope, the anchor point assembly maintains the end-loaded posture and keeps the main load-bearing rope and the accompanying constraint rope in a force diversion state until the impact response ends.

8. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 7, characterized in that, The initial limiting of the main load-bearing rope by the first axial micro-segment locking body in S4-1 also includes the following steps: S4-1-1. Divide the first axial micro-segment locking body into a front locking tooth, a middle locking tooth and a rear locking tooth along the axial direction of the main bearing rope, and make the front locking tooth contact the outer surface of the main bearing rope before the middle locking tooth, and the middle locking tooth contact the outer surface of the main bearing rope before the rear locking tooth. S4-1-2. After the front locking teeth contact the outer surface of the main load-bearing rope, a shallow embedded clamping is first formed; after the middle locking teeth contact the outer surface of the main load-bearing rope, an enhanced clamping is formed; after the rear locking teeth contact the outer surface of the main load-bearing rope, an end-suppressing clamping is formed. S4-1-3. The contact depth of the front locking tooth, the middle locking tooth and the rear locking tooth increases along the axial direction of the main load-bearing rope, so that the initial impact displacement of the main load-bearing rope is decomposed into multiple short-stroke micro-displacements; S4-1-4. During the sequential release of the multiple short-stroke micro-displacements, the pressure zone of the surface fiber and the tension zone of the core fiber of the main bearing rope are alternately migrated along the axial direction. S4-1-5. During the alternating axial migration of the tension zone, an intermittent axial blocking sequence is formed between the first axial micro-segment locking body and the main load-bearing rope.

9. The intelligent safety rope multi-level protection method for high-altitude power operations according to claim 1, characterized in that, In step S5, the load history of the rope is generated using a combined determination method based on the difference in strain rebound along the rope, the residual amount of local bending, the residual elongation before and after impact, the cumulative value of slip displacement, the backlash of the anchor point assembly deflection angle, the action time sequence of the segmented locking assembly, and the load transfer amount of the accompanying constraint rope. Based on the determination result of the combined determination method, the main load-bearing rope is divided into resettable sections, limited-use sections, and mandatory decommissioning sections. Among them, tension adjustment and configuration reset are implemented for the resettable sections, partial cutting and re-weaving, end reconstruction and calibration verification are implemented for the limited-use sections, and the entire section is sealed and dismantled for the mandatory decommissioning sections. At the same time, the accompanying constraint rope, slip modulation assembly and segmented locking assembly are checked, replaced and decommissioned according to their respective sections.

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