247 results about "Cable tension" patented technology

The invention provides a stay cable tensioning process simulation optimization design method and system based on finite element analysis, and the method comprises the steps: building a finite element model of a tower beam structure of a target cable-stayed bridge; the target cable-stayed bridge is a cable-stayed bridge constructed by a support method and provided with asymmetric leaning towers; based on the finite element model, stay cable tension process simulation of the tower beam structure under different jump tension sequences is carried out, and time-varying mechanical response of the tower beam consolidation system is obtained; and according to the time-varying mechanical response, the cable force effectiveness and the tower beam deformation continuity are taken as targets, a tension sequence is optimized through a multi-point coincidence approximation strategy, and simulation design of automatic iterative optimization is carried out. According to the stay cable tensioning process simulation optimization design method and system based on finite element analysis, the optimal jump tension sequence is solved in the simulation model, the evolution amplitude of the stress behavior of the tower beam in the stay cable tensioning bridge forming process is reduced, the evolution smoothness of the stress behavior is improved, and the phenomena of hard sudden change, discontinuity and even internal damage are prevented.

An example cable tension device is provided. The cable tension device includes a bracket, an arm, and a spring. The arm is rotatably coupled to the bracket and comprises a roller bar to receive a cable of an overhead door. The spring is coupled to the arm. The spring is under a load to cause the arm to rotate away from the bracket to maintain a tension on the cable.

The utility model relates to the technical field of cable tension detection, in particular to a tension detection device for cold and hot shrinkage cable accessories, which comprises a detection table, a mounting box fixedly connected to the top of the detection table, through grooves formed in two sides of the mounting box, a worm rotatably connected to the inside of the mounting box, and a worm gear meshed with the outer wall of the worm. The worm wheel is rotatably connected to the inner wall of the mounting box, the outer wall of the shaft part of the worm wheel is fixedly connected with a gear, the bottom of the gear is engaged with a rack, the rack is slidably connected to the top of the detection table and penetrates through the through groove, and the top of the detection table is provided with a clamping mechanism for clamping a cable; sliding rods are fixedly connected to the side walls of the two fixing blocks, and two sets of sliding blocks are arranged at the top of the detection table. Compared with the prior art, the clamping area, the friction force and the firmness are increased, so that the condition that the cable slips or is broken due to infirm clamping or too small contact surface in the tension test process is prevented.

This invention discloses a cable laying device for power construction, belonging to the technical field of power construction equipment. Specifically, the cable laying device includes a roller component, a triggering component, and a locking component. This invention achieves adaptive and precise locking of the cable drum through the coordinated operation of the triggering and locking components, effectively solving the problems of severe cable wear caused by reliance on frictional transmission in existing devices and cable slack and entanglement due to the inertial rotation of the drum. Specifically, this invention does not rely on friction between the cable and the transmission component for locking control. Instead, the cable tension acts directly on the roller, driving the triggering component to move and release the lock. When the cable stops pulling or slacks, the spring force drives the locking component to automatically engage and lock. Throughout the process, the cable and roller experience rolling friction, resulting in minimal friction and minimizing wear on the cable sheath, thus ensuring the cable's insulation performance and service life.

The application discloses a kind of based on edge identification no target cable force identification method, the method includes: cable video acquisition and pre-processing: acquisition cable video, video frame is carried out image gray conversion and is adapted to the multi-scale Gaussian filtering operation of filter scale according to noise characteristics;Canny algorithm cable edge identification: using Canny edge detection algorithm to the video frame after pre-processing is carried out cable edge identification;Cable feature point screening and KLT optical flow method identification: from edge identification result screening cable feature point, and using KLT optical flow method in continuous video frame between tracking feature point dynamic displacement;Fundamental frequency identification and cable force calculation: displacement data is applied Fourier transform to identify cable fundamental frequency, and adopts XGBOOST regression model based on fundamental frequency and relevant parameter calculation cable tension.The application realizes the precise, efficient and non-contact monitoring of bridge cable stress state.

The invention relates to the field of engineering machinery, and discloses an engineering machinery cable double-reel cooperative control method and system, and the method comprises the steps: obtaining the position information of an excavator and a cable car in real time through a wireless carrier communication technology, collecting the cable state and the motion data of a main / auxiliary reel through a sensor on a cable, and uploading the data to a control center for preprocessing. The position deviation, the speed change rate, the cable tension fluctuation and the abrasion degree are analyzed, cable take-up and pay-off stages are accurately divided in combination with a standard working condition model, and the following distance of the cable car is dynamically adjusted to be matched with the speed and the acceleration of the excavator. Meanwhile, the torque of a motor is monitored to achieve limiting control, cable take-up and pay-off operation is accurately executed, an auxiliary reel is automatically switched to be released when a main reel cable reaches a threshold value, early warning is triggered when the auxiliary reel is released to the safety limit, dynamic cooperative control over the excavator and the cable car is achieved, cable take-up and pay-off stages are accurately divided, and the following distance is adjusted; the problems of distance deviation, out-of-control tension and safety response lag in a traditional method are solved.

The utility model relates to the technical field of power cable production, in particular to a tension control mechanism for power cable production, which comprises a base, a hollow side plate arranged at the top end of the base, a winding roller arranged on the inner side of the hollow side plate, a driving gear arranged on the inner side of the hollow side plate, and a driven gear arranged on the inner side of the hollow side plate. Arc-shaped through grooves are formed in the top ends of the hollow side plates, connecting rods are arranged on the outer sides of the driven gears, a connecting shaft is arranged between the two connecting rods, and a tension roller is arranged on the outer side of the connecting shaft; a hollow side plate on a base is rotationally connected with a winding roller, a produced cable is wound and unwound through the winding roller, the cable rotates through the surface of a tension roller on a connecting shaft to achieve winding and unwinding, a driving gear is rotated to drive a driven gear to rotate in an engaged mode, the driven gear is rotated to enable a connecting rod to rotate along an arc-shaped through groove, and the placing angle of the connecting rod is adjusted; by adjusting the winding and unwinding bending position, the cable winding and unwinding tension is flexibly regulated and controlled, and it is ensured that the cable tension is always kept within a proper range.

The invention provides a cable tension detection device, and relates to the technical field of cable detection, the cable tension detection device comprises a test machine, an upper fixing mechanism, a pull-down test mechanism, a pair of separation mechanisms and a pair of insulation layer test mechanisms, the upper fixing mechanism comprises a manual clamp, a top plate and a clamping block, and the pull-down test mechanism comprises a pull-down test mechanism and a pull-down test mechanism. The top plate is fixedly connected to the inner top end of the testing machine, the manual clamp is fixedly connected to the bottom of the top plate, the clamping block is fixedly connected to the front side of the manual clamp, and the clamping block is arranged beside the clamping end of the manual clamp. The pull-down testing mechanism comprises a first electric clamping jaw, a second electric clamping jaw and a pair of lower plates, the lower plates are fixedly connected to the two movable testing ends of the testing machine, and the first electric clamping jaw and the second electric clamping jaw are fixedly connected to the top ends of the lower plates respectively. And the mechanical performance test of the cable body, the copper wire and the insulating sheath is realized.

This invention discloses a three-coil traction winch, comprising a traction winch frame and a winch transmission system mounted on the frame. A driven winch, a small winch, and a driving winch are sequentially mounted on the shaft of the drive system. The cable passes through the driving winch end, and the driven and driving winches rotate synchronously in the same direction. Simultaneously, the small winch rotates synchronously in the opposite direction to both the driven and driving winches. The traction cable passes sequentially through the driving winch, the small winch, and the driven winch before exiting from the driven winch end. This three-coil traction winch reduces the cable tension at the exit end to half that of a two-coil traction winch, thus increasing the cable tension reduction capacity by nearly 100%. With the same cable tension reduction capacity, the number of winch slots can be reduced, thereby reducing the overall weight of the winch device and achieving weight reduction. The traction winch of this invention is smaller and more compact than a two-coil winch, and the number of winch slots can be reduced by nearly half.

The invention relates to the technical field of component damage identification, and provides a power transmission tower structure damage identification method, device and system based on an inhaul cable tension signal and a medium. According to the implementation scheme, based on frequency domain transformation, frequency feature extraction is conducted on inhaul cable tension monitoring information of all modal positions, and main peak frequency values of all the modal positions are obtained; based on the relative descending amplitude of the main peak frequency value of each modal position, determining a positioning identification result of the to-be-identified power transmission tower; based on the positioning identification result of the to-be-identified power transmission tower, determining the rigidity reduction coefficient of the to-be-identified power transmission tower through a mapping model between the stay cable tension frequency characteristics and the rigidity reduction coefficient of the power transmission tower; based on the rigidity reduction coefficient, calculating the static displacement ratio of the to-be-identified power transmission tower to obtain a quantitative identification result of the to-be-identified power transmission tower; and determining a damage identification result of the to-be-identified power transmission tower based on the positioning identification result and the quantitative identification result. According to the embodiment of the invention, the power transmission tower damage identification reliability and accuracy can be improved.

The application belongs to the technical field of stranding device, especially to the stranding device for high-temperature-resistant special cable, which comprises a stranding assembly, a ring-shaped cooling mechanism and a nickel plating assembly. The ring-shaped cooling mechanism is installed at the supporting end of the stranding assembly, and the side of the ring-shaped cooling mechanism is provided with the nickel plating assembly. The nickel plating assembly comprises a workbench, a nickel plating tank, a stirring assembly and a cleaning mechanism. The inside of the workbench is provided with the nickel plating tank, and the side of the nickel plating tank is provided with a heating assembly. The side of the stirring assembly is provided with the cleaning mechanism. The cleaning mechanism comprises a cleaning brush, a through hole and a collection bin. The cable tension is adjusted by the constraint roller sliding rod and the constraint plate. The four-way distribution of the stranding roller ensures uniform stranding. The cylindrical air duct cooperates with the stabilizing roller to realize ring-shaped air flow cooling. The nickel plating tank integrates the four-way stirring assembly to ensure uniform plating layer. The circumferentially distributed cleaning brush and the dust collection bin realize automatic cleaning. The dustproof shell and the heating assembly prolong the service life of the plating solution and realize continuous production.

The invention discloses a tension testing device for cable detection, and relates to the field of tension testing devices, the tension testing device comprises a testing rack, the testing rack is movably provided with a testing pull-up seat, and the testing pull-up seat is provided with a pull-up clamp; the device further comprises a cable position detection device, and the cable position detection device is installed on the test rack. It needs to be explained that in the embodiment of the invention, sudden stop is triggered through mechanical swing of the cable holder, the skew fault can be identified in the initial stage, the tension coaxiality deviation caused by skew cable clamping and deformation and sinking of the pull-up seat is avoided, and the major safety accident of cable collapse is effectively avoided; according to the cable tension test device, the test data distortion caused by such factors is eliminated, the accuracy and repeatability of a cable tension test result are ensured, meanwhile, through reverse mechanical triggering, real-time detection and sudden stop of tiny deformation and sinking of the pull-up seat are realized, and hidden safety hazards are eliminated in advance.

This utility model discloses a marine photovoltaic cable laying device, relating to the field of photovoltaic cable laying technology. It includes a laying mechanism comprising a float, at least two paddles symmetrically arranged at the bottom of the float, a cable-laying reel fixedly installed at the top of the float for cable laying, and a laying groove opened at the top of the float for cable laying; and an anti-loosening mechanism comprising a damping component for cable laying, a first tensioning component for cable tensioning, and a second tensioning component for double cable tensioning. This utility model, through the synergistic cooperation of the damping component, the first tensioning component, and the second tensioning component, can apply effective tension to the cable, solving the problem of cable loosening caused by insufficient tension in traditional laying devices, avoiding the impact of abnormal cable curvature changes on laying quality, improving cable tension stability, and thus ensuring an improved overall laying effect.

The utility model relates to the technical field of bridge detection, and particularly discloses a bridge cable tension detection device which comprises a first fixing plate, a plurality of second fixing plates fixedly connected to the outside of the first fixing plate, a detection assembly fixedly connected to the top of the first fixing plate, sliding grooves formed in the second fixing plates, and two sliding blocks slidably connected to the interiors of the sliding grooves. The close sides of the multiple sliding blocks are fixedly connected with a mounting plate, the top of the mounting plate is fixedly connected with a driving assembly, the top of the mounting plate is provided with a limiting groove, the interior of the limiting groove is slidably connected with a connecting plate, and the top of the mounting plate is fixedly connected with two supporting rods. And the bridge cables with different specifications are stably clamped, so that the potential safety hazard that the cable accidentally slips off in the detection process due to insufficient clamping force is eliminated, and the occurrence of safety accidents is effectively avoided.

This application relates to the technical field of ship charging, and in particular to a marine charging device with automatic tension adjustment. The device includes a telescopic arm with a cable mounted on it. The cable includes a charging head for connection to the ship. The telescopic arm comprises a main arm and a secondary arm, which are hinged together. A connecting frame is located at the end of the secondary arm, and the charging head is located within the connecting frame. A guide frame is located at the end of the main arm near the secondary arm. A support roller is rotatably connected to the guide frame. Several support wheels for supporting the cable are mounted on the support roller. A pressure roller is mounted on the guide frame, and a pressure wheel is coaxially connected to the pressure roller. The cable is clamped between the pressure wheel and the support wheel. A sensor for monitoring tension is installed on the cable. An adjusting motor is installed on the support roller, and the adjusting motor is electrically connected to the sensor via a controller. Through the sensor and adjusting motor, the cable tension is monitored in real time and adjusted by unwinding the support wheels to prevent excessive tension from affecting its service life.

The invention discloses a photovoltaic flexible support deformation rapid monitoring device, and relates to the technical field of support deformation monitoring, the photovoltaic flexible support deformation rapid monitoring device comprises a rigid support structure, a flexible support structure and a photovoltaic panel, and two ends of the bottom of the rigid support structure are provided with tension detection mechanisms used for monitoring structural tension and deformation conditions of the flexible support structure; the middle part of the bottom side of the rigid supporting structure is provided with a lifting angle adjusting mechanism used for adjusting the pitching angle of the photovoltaic panel. An elevation angle measuring mechanism is arranged on the side surface of the lifting angle adjusting mechanism; the tension detection mechanism comprises an arc-shaped steel sheet, the middle part of the arc-shaped steel sheet is fixedly connected with channel steel, and the top surface of the channel steel is fixedly connected with an upper hinge block, the tension of the sling and the working posture of the photovoltaic panel can be remotely monitored in real time, accurate data support is provided for tension adjustment, the subsequent maintenance and inspection process is also greatly simplified, and the working efficiency is improved. Therefore, comprehensive improvement of system safety, service life prolonging and operation and maintenance convenience is realized.

The invention discloses a capstan inhaul cable device with an overload protection breaking point, relates to the technical field of capstan overload protection devices, and aims to solve the technical problem that the capstan overload protection device is low in functionality, the capstan inhaul cable device comprises a capstan equipment body, and a breaking point auxiliary separation mechanism is arranged on an inhaul cable of the capstan equipment body. When the underwater survey instrument is clamped with a seabed rock bulge, the tension of the inhaul cable is gradually increased until the overload fracture module is fractured, the sliding ring seat slides upwards, the auxiliary separation arm radially expands and acts with the rock bulge, and the underwater survey instrument is assisted to escape; when an underwater survey instrument crosses a rock protrusion, under the elastic acting force of a spring A, the sliding ring base restores to the original position, the rotating end of the rotating module rotates to enable the other overload fracture module to be connected with the clamping module in a clamped mode, the overload fracture module does not need to be replaced on the water surface immediately, time and labor are saved, and the technical problem that the winch overload protection device is low in functionality is solved.

The invention relates to the field of unmanned aerial vehicle cables, in particular to a strip-shaped ultra-light photoelectric composite mooring unmanned aerial vehicle power supply cable which comprises power conductor units, a force bearing fiber structure, an optical fiber communication unit and an insulating outer protection layer. The power conductor unit is used for electric energy transmission, the optical fiber communication unit is used for data communication, and the force bearing fiber structure is used for bearing cable tension. The insulating outer protection layer is arranged on the outer layer of the cable, is made of an insulating material, and serves as an insulating layer and a protection layer of the cable at the same time. The cable adopting the structural design has the characteristics of simple structure, light weight, high tensile strength and small air resistance, realizes integration of power supply and communication, can meet the use requirement of long-time hovering operation of the mooring unmanned aerial vehicle, and adapts to the core demand of an unmanned aerial vehicle operation scene.

The utility model discloses an aluminum alloy cable tension testing device, which relates to the technical field of aluminum alloy cable processing and comprises a detection table, a fixed cylinder fixedly connected to the middle position of the left side of the upper surface of the detection table, a first limiting mechanism arranged in the top end of the fixed cylinder, and a moving mechanism arranged in the center position of the right side in the detection table. A tension detector is arranged at the top end of the moving mechanism, a movable cylinder is mounted on the left side of the tension detector, pull ropes are fixedly connected to opposite positions of the front end and the rear end of the movable cylinder, and a second limiting mechanism is arranged in the top end of the movable cylinder. The central position of the upper surface of the detection bench is fixedly connected with the fixed cover, the central position of the aluminum alloy cable tension test can be covered by the fixed cover, two sides of the movable cylinder are connected with the movable cover in the fixed cover through the pull ropes, and when the movable cylinder pulls the cable to move, the cable tension test can be completed. The pull ropes on the two sides of the movable cylinder can pull the movable cover to move synchronously, so that aluminum alloy cable tension test protection is effectively carried out.

This utility model discloses an intelligent elevator cable tension detection device, including a base, a side frame on one side of the top of the base, a control box on one side of the top of the side frame, a drum on the top of the base on one side of the side frame, a cable body wound on the outer wall of the drum, limiting rings fitted on the outer walls of both sides of the drum, a first side seat rotatably connected to the outer wall of one side of the drum, the bottom end of the first side seat being fixedly connected to the top of the base, a second side seat on the top of the base on the side of the drum away from the first side seat, a mounting frame on the top of the drum, a pressure roller rotatably connected to the inner wall of the mounting frame, the bottom end of the pressure roller contacting the outer wall of the cable body, and a distance sensor installed on the top of the side frame above the mounting frame. This utility model not only reduces the phenomenon of cable body loosening on the outer wall of the drum, but also facilitates the control of the drum's rotation speed to adjust the tension of the cable body as needed, and ensures the stability of the drum during transmission.

An automatic control cable reel device is primarily used in scenarios such as offshore wind power equipment inspection. The device consists of a base, a cable reel assembly, a guide, an encoder assembly, and a pulley system. The cable passes sequentially through the guide and encoder assembly before connecting to the pulley system. The encoder in the encoder assembly measures the number of rotations of the follower wheel to monitor the cable winding and unwinding length and speed. The cable reel bracket and guide can move or adjust along corresponding slide rails to accommodate different cable specifications. Its automatic control logic collects data from the encoder, uses a PID algorithm to control the start / stop and speed of the cable reel assembly, and determines the operating status based on cable tension. This device solves the problems of inconvenient cable winding, inaccurate measurement, and poor winding quality associated with traditional cable reels. It can automatically match control parameters, improve cable positioning accuracy and service life, and can also be integrated into sacrificial anode detection devices to achieve integrated corrosion prevention and winding / unwinding, optimizing cable management efficiency and safety.

The invention provides a cable tension detection device. The cable tension detection device comprises a fixed base, a rotary base, two clamping units, a driving assembly and two sensing components. The rotary base is constructed to form a containing groove, the rotary base is rotatably connected to the fixed base around a first horizontal axis between an installation position and a detection position, and an opening of the containing groove of the rotary base located at the detection position is arranged downwards. The two clamping units are both arranged on the rotating base and are movably arranged relative to the rotating base in the first horizontal direction, the two clamping units are used for clamping the two ends of a cable, and the two clamping units are provided with stress driving parts. The driving assembly is arranged on the fixed base and used for being matched with the stress driving part of the rotary base located at the detection position. The two sensing components are arranged on the stress driving parts of the two clamping units correspondingly and used for detecting the acting force transmitted to the clamping units by the driving assembly. The cable tension detection device is high in safety.

The invention discloses a cable tension testing device and detection method, and relates to the technical field of cable detection, the cable tension testing device comprises a rack and fixing assemblies located at two ends of the rack and used for fixing a cable, the end part of the rack is provided with a tension driving member facing one of the fixing assemblies, and the rack is provided with a placing groove for placing the cable along the length direction; the fixing assembly comprises a moving seat in sliding connection with the rack, the moving seat is provided with a connecting assembly connected with a connector at the end of the cable, sliding grooves corresponding to the moving seat are formed in the positions, located on the two sides of the containing groove, of the rack, and a limiting assembly for fixing the moving seat is arranged on the side wall, away from the tension driving piece, of the moving seat. The moving seat is matched with the placing groove to adapt to cables of different lengths, the limiting assembly fixes the moving seat far away from the tension driving part, it is guaranteed that tension effectively acts on the cables, the moving seat is guided to move along a straight line through the sliding groove, it is guaranteed that the tension direction is consistent with the axis of the cables, test errors caused by lateral force are prevented, and the test requirements of the cables of different specifications are rapidly met.

The present application relates to the technical field of bridge structure safety monitoring, and relates to a real-time monitoring system for bridge cable force. According to the vibration frequency signal of the bridge cable, the initial cable force is determined, the cable force compensation value of the environment temperature where the bridge is located is combined, the real-time cable force of the bridge cable is obtained, when the real-time cable force is in a safe state, the correlation coefficient between each cable and the cable on the same side is obtained based on the historical cable force time sequence vector of the cable, the corresponding cable on the same side of each cable is determined, the cable force time sequence synchronization degree between the cables on the same side and the cable force time sequence deviation value and deviation direction between the symmetric cables are obtained, whether each cable has the cable force cooperation on the same side and the symmetric cable force cooperation is judged, the overall safety performance of the bridge cable is diagnosed based on the judgment result, the reliability of the overall safety performance diagnosis of the bridge cable is improved by comprehensively evaluating the stress balance state of the bridge cable group, and data support is provided for the preventive operation and maintenance of the bridge.

The invention discloses a control method for a finger rehabilitation exoskeleton combining a metamorphic principle and a rope driving module. The control method comprises the following steps that kinematics data of the exoskeleton during flexion and extension movement are collected through a sensor system; performing filtering preprocessing on the data; the expected moment of force of each joint and the pulling force of the cable are calculated, and the final expected pulling force is obtained; the collected data and the calculated data are input into a PID controller optimized by a TD3 algorithm, optimized PID parameters are obtained through training and updating, and cable tension tracking is achieved accordingly; evaluating the advantages and disadvantages of the PID controller optimized by the TD3 algorithm, and measuring the error degree of the expected tension and the true value; and PID controller parameters optimized by the TD3 algorithm are adjusted, and the tension of each cable is controlled. The PID controller is optimized by adopting a TD3 algorithm, the PID parameter adjustment amount is dynamically output, the accuracy of a driving motor control signal and the tension tracking precision are remarkably improved, the man-machine interaction flexibility is improved, and the safety and effectiveness of rehabilitation training are guaranteed.

The invention belongs to the field of horizontal well multi-section hydraulic fracturing, and particularly discloses a horizontal well pumping bridge plug perforation parameter prediction method, system and device and a medium, and the method comprises the steps that horizontal well related parameters and corresponding site construction actual pumping displacement and cable tension are collected; dividing the well bore track into a plurality of infinitesimal sections, and constructing a training database by taking relevant parameters of the infinitesimal sections as basic learning units; establishing a neural network prediction model, and training and optimizing the neural network prediction model; dividing the well body track of the horizontal well to be predicted into a plurality of infinitesimal sections, taking the relevant parameters of the infinitesimal sections as input, outputting prediction results of the pumping displacement and the cable tension of all the infinitesimal sections, and integrating to generate prediction results of the pumping displacement and the cable tension of the whole well. According to the method, autonomous learning and continuous optimization of the prediction model are realized, the accuracy of simulation and prediction of construction parameters is guaranteed, and the construction success rate is improved. The method is suitable for predicting the pumping displacement and the cable tension.

The winch cable tension detection device includes a cable laying mechanism and a three-roller force measuring mechanism. The cable laying mechanism includes a bracket with a rotatably connected reciprocating screw and a slidably connected guide shaft. The force measuring mechanism includes a force measuring bracket and three rotatable rollers mounted on the force measuring bracket, one of which has a pin-type sensor on its spindle. A rotating bracket is rotatably connected to the bracket via two vertical shafts symmetrically positioned at the upper and lower ends of the rotating bracket and bracket. A swing link is rotatably connected to the middle of the rotating bracket via two horizontal shafts symmetrically positioned on both sides of the rotating bracket and swing link. The swing link is rotatably connected to the force measuring bracket in the force measuring mechanism via two connecting shafts symmetrically positioned on both sides of the swing link and force measuring bracket. The three-roller force measuring mechanism can detect the cable tension in real time during winch operation and shutdown, providing multiple functions and effectively avoiding safety hazards.

The invention discloses a large-diameter antenna cable net tension dynamic monitoring device and method, the large-diameter antenna cable net tension dynamic monitoring device comprises a first cylindrical fixing piece and a second cylindrical fixing piece, and a hollow pin is arranged between the first cylindrical fixing piece and the second cylindrical fixing piece; a sensitive core body is arranged in the hollow pin, and two ends of the sensitive core body are respectively fixed on the first cylindrical fixing piece and the second cylindrical fixing piece; the sensitive core body is provided with a cable, when the tension of a rope is transmitted to the resonator, the resonator can generate frequency change accurately corresponding to the tension, accurate capture of tiny tension change can be achieved, and compared with a traditional detection device, the detection device is high in measurement accuracy, can meet the scene requirement with the strict tension accuracy requirement, and is suitable for popularization and application. The technical problem that in the prior art, the mode of manually holding a force measuring instrument to test the main and auxiliary net ropes is not high in precision, and consequently the profile adjusting strategy is not accurate is solved.

The application discloses a special-shaped steel pipe concrete pipe section hoisting dynamic pose control method and relates to the technical field of underwater pipeline installation of marine engineering, and mainly solves the problems of insufficient dynamic response and low spatial pose control precision when the special-shaped pipe section is hoisted in a complex water flow environment. The method comprises the following steps: obtaining spatial pose design parameters of the pipe section, monitoring the pitch angle and roll angle of the pipe section in real time through an inclination sensor group, calculating the disturbance torque generated by real-time water flow force, generating a length compensation amount of a sling, independently adjusting the winding and unwinding speed of each hoisting point hand-operated hoist, controlling the horizontal turning angle of the pipe section through the adjustment cable ropes which are moored on both sides, and feeding back and adjusting the hook height and cable tension in cooperation with the floating crane positioning system, so that the pipe section is finally accurately positioned underwater to the predetermined position on the seabed. The application is mainly used for the hoisting and sinking operation of the special-shaped steel pipe concrete pipe section in the marine environment, can effectively resist the water flow interference, and guarantees the accurate butt joint and installation quality of the pipe section interface.

This invention belongs to the field of cable winch technology and discloses a self-buffered braking cable winch, including a control base, a tension-adaptive adjustment winding and unwinding mechanism, a follow-up cable laying mechanism, a follow-up pressing mechanism, and a bidirectional check mechanism. The tension-adaptive adjustment winding and unwinding mechanism includes a winding and unwinding assembly, a diameter-changing assembly, and a tension control assembly. The bidirectional check mechanism is installed on the front and rear sides of the control base and connected to the winding and unwinding assembly. Through this method, the diameter-changing assembly expands outward according to the number of turns of the cable winding and unwinding, providing outward tension to the inner coil of cable on the diameter-changing assembly. This ensures that the inner and outer coils of cable are tightly attached, preventing insufficient cable tension during winding and unwinding, which could cause the inner coil of cable to slip. Furthermore, the transverse pressing assembly provides pressing force to both the inner and outer coils of the cable roll, further improving the quality of cable winding and unwinding.