49 results about "Maintenance engineering" patented technology

The invention discloses a systematic monitoring method for the electrical safety performance of a cable, and relates to the field of electrical safety, and the method comprises the steps: collecting sensor data to an edge calculation node, preprocessing the data, and outputting the data as real-time calculation temperature data, local discharge point data, resistance and capacitance data and vibration data; the data are sent to a hidden danger classification model and a fault positioning model in the cloud, and the models output early warning information to an operation and maintenance project for processing; the sensor data sending process is judged according to the data frequency, when it is judged that the frequency is larger than 1 kHz, a 1D-CNN electric arc detection model is loaded, when it is judged that the frequency is smaller than 1 kHz, a Light GBM feature classification model is loaded, and 24-hour sensor data smaller than 1 kHz are periodically loaded into an LSTM-Attention gradient analysis model; and related data of partial discharge generated by judgment of the 1D-CNN arc detection model is sent to an LSTM-Attention gradient analysis model for evaluating the partial discharge trend of the global cable. Classification model output is used as prior knowledge of a positioning model, and the positioning accuracy can be improved.

The invention belongs to the technical field of nuclear power station nuclear-grade rotating equipment maintenance engineering, and particularly relates to a large nuclear-grade vertical pump mechanical seal pressing device. Dynamic and static ring sealing rings are mounted in sealing grooves of the static ring seat and the dynamic ring seat; a dynamic ring and a static ring are correspondingly mounted at the upper parts of the sealing grooves respectively; the whole static ring seat is installed in the static ring shell, axial sealing is achieved through the static ring seat sealing ring and the teflon gasket, and the static ring seat and the static ring shell are axially and fixedly provided with the radial pin. A water outlet is formed in the lower part of the pressurizing shell, a sealing plug is mounted at the water outlet in the pressurizing process, and meanwhile, a pressure gauge is arranged; the sealing body is installed on the upper portion of the pressing shell for sealing, the pump shaft is connected with the pressing sealing body, the sealing shaft sleeve is installed on the pump shaft, the shaft sleeve gland is arranged on the upper portion of the sealing shaft sleeve, the sealing shaft sleeve is pressed through the shaft sleeve pressing bolt, the pump shaft sealing ring is arranged on the lower portion of the sealing shaft sleeve, and two-stage sealing is installed in a sealing cavity formed by the pump shaft and the sealing body. Sealing pressure can be continuously and stably provided, and the sealing performance of the mechanical seal is effectively verified.

The invention discloses a geometric irregularity state deterioration characterization method for a longitudinally-connected ballastless track on a high-speed railway bridge under a transverse earthquake, and the method comprises the steps: building a refined finite element model of a longitudinally-connected ballastless track-bridge system, and analyzing the damage characteristics and distribution rules of key components of the earthquake-caused track-bridge system; the characteristic of damage state degradation of key components of the earthquake-induced track-bridge system and a mapping mechanism are disclosed; then, based on the second theorem of Castlliano and the superposition principle, a geometric irregularity state deterioration characterization model of the longitudinally-connected ballastless track on the high-speed railway bridge under the action of the transverse earthquake is constructed, the geometric irregularity state of the longitudinally-connected ballastless track on the simply-supported / continuous beam bridge is mapped based on the deterioration characterization model, deformation data of the steel rail under the action of the earthquake are accurately quantified, and the accuracy of the deformation of the steel rail under the action of the transverse earthquake is improved. The method provides a theoretical basis for quickly judging the post-earthquake traffic capacity and maintenance engineering of a track-bridge system, ensures the operation safety of a high-speed railway, provides a theoretical basis for the design of a high-speed railway track-bridge, is beneficial to post-earthquake track repair and train operation recovery, and has a good practical value and a good popularization prospect.

The invention discloses a bridge maintenance dynamic decision-making method and system based on multiple dimensions and maintenance standards, and belongs to the technical field of bridge intelligent maintenance, and the method comprises the steps: collecting static basic data and dynamic basic data of a to-be-maintained bridge, and evaluating and determining key parts / components, key diseases, four-stage maintenance standards and three-dimensional indexes; a maintenance scheme library formed by different maintenance schemes is determined, and a to-be-maintained bridge and a maintenance project demand analysis library of the maintenance project amount are screened and determined; analyzing and generating a cost benefit model; and according to the cost-benefit model, calculating the maintenance cost required by the to-be-maintained bridge corresponding to different maintenance standards in the maintenance project demand analysis library and the maintenance benefit generated by maintenance, determining a maintenance project plan library and making a maintenance plan. The bridge maintenance dynamic decision-making method and system disclosed by the invention are helpful to grasp the development trend of bridge technical conditions, standardize maintenance decision-making behaviors, improve the scientific decision-making level and effectively carry out preventive maintenance.

The invention discloses a mechanical product overhaul life determination method based on preventive maintenance, and relates to the technical field of mechanical product reliability and maintenance engineering, and the method comprises the following steps: S1, constructing a mechanical product disciplinary cross equation; s3, constructing a mechanical product performance degradation model based on preventive maintenance, and estimating unknown parameters by adopting a maximum likelihood estimation method so as to determine a relationship between a performance degradation amount and time; and S4, estimating parameters of the performance degradation model and finally determining the overhaul life of the mechanical product. According to the method, the influence of preventive maintenance on the mechanical product performance is comprehensively considered, the performance fluctuation and degradation process caused by the maintenance activity is described by constructing the segmented performance degradation function, and the relationship between the performance degradation amount and the time is determined by using the maximum likelihood estimation method; and the finally determined overhaul life of the mechanical product is more accurately applied to an actual engineering scene.

The invention relates to an AI-based highway greening engineering disease intelligent identification and maintenance management system, which mainly comprises a central control system, AI intelligent identification software, machine learning algorithm software, mobile equipment, a digital camera, maintenance construction equipment and an engineering acceptance system, intelligent management and control of the whole process of highway greening engineering from disease discovery to maintenance construction acceptance are achieved, and the maintenance construction efficiency and the maintenance engineering quality are improved. The central control system is used for controlling expressway greening engineering image acquisition, greening engineering disease AI identification software to determine the type and area of the expressway greening engineering, and generating a maintenance task notice; the maintenance construction unit receives the task book and then carries out maintenance construction, and the supervision unit accepts the maintenance project quality and the project number. AI identification software and machine learning algorithm software for various diseases of the highway greening engineering are researched and developed, and the functions of automatically determining the types and areas of the diseases in the greening engineering, automatically generating the maintenance engineering amount and the engineering cost and the like are achieved.

This application belongs to the technical field of maintenance engineering for rotating equipment of a station, and specifically relates to a test bench for the thrust bearing of a nuclear power plant main pump and its assembly method. The test bench for the thrust bearing of the nuclear power plant main pump includes: a base, a loader, a lower torque meter, a motor support seat, a radial thrust bearing, an upper torque meter, a motor bracket, and a motor; the loader is fixed on the base, and the upper end is fixed to the lower end of the lower torque meter and is provided with a first positioning pin; the upper end of the lower torque meter passes through the first through hole and is fixed to the lower end of the radial thrust bearing and is provided with a second positioning pin; the lower end of the upper torque meter is fixed to the upper end of the radial thrust bearing and is provided with a third positioning pin, and the upper end of the upper torque meter passes through the second through hole and is connected to the motor through a coupling and is provided with a fourth positioning pin, solving the problems of difficult assembly and alignment of the multi-segment shaft combined rotor in the prior art and ensuring the assembly quality.

The utility model relates to the technical field of railway maintenance engineering, and discloses a steel rail corrugation removing trolley which comprises a driving trolley and a driven trolley which are connected with each other, the driving trolley pulls the driven trolley to move forwards or backwards in a reciprocating mode, and the driven trolley is used for bearing a water jet cutter device and an identification system and removing steel rail corrugation. The driving trolley and the driven trolley are both provided with wheel sets which clamp the steel rail upwards from the lower jaw of the steel rail. The movable trolley is used for carrying the water jet cutter device and the recognition device, meanwhile, the contact surfaces of the auxiliary wheels of the driving trolley and the driven wheels of the driven trolley and the steel rail are lower jaws of the steel rail, and the steel rail is clamped up and down, so that vibration and instability caused by the uneven surface of the steel rail are effectively avoided, and the service life of the steel rail is prolonged. The processing accuracy of the water jet device and the recognition device can be improved.

The invention relates to the technical field of data processing and engineering project process management, in particular to a full-process intelligent management method and system for bridge and tunnel maintenance engineering. The method comprises the following steps: extracting a disease geometric contour based on bridge and tunnel inner wall three-dimensional point cloud data, and calculating a centroid coordinate, a volume and a surface contour area; constructing a space retrieval sphere by using a target disease centroid, screening an adjacent disease set, and calculating a local aggregation density by combining the volume and the centroid distance; calculating the average depth of the target disease, and deducing the overlapping sharing rate of the working plane; constructing a group topology consumption equivalent through linear analysis; and inputting the extreme gradient lifting model to output an optimal repair material dosage table and a material distribution operation instruction book. According to the method, the disease space distribution and aggregation degree can be accurately evaluated, the construction loss surface overlapping probability and the material sharing potential are scientifically evaluated, the material preparation accuracy is improved, waste and cost are reduced, and the whole-process intelligent management of bridge and tunnel maintenance engineering is realized.

The utility model discloses a banknote digging separation gap detection tool. A banknote digging separation gap detection tool is daily carried by a maintenance engineer, is operated according to instructions during equipment maintenance, is installed at a specific position of a banknote feeding and stripping structure, and can visually indicate the embedding depth between an F wheel and a G wheel. Meanwhile, when the embedding depth of the G wheel and the F wheel is finely adjusted, the tool indicates the position change of the G wheel through amplification, so that a maintenance engineer can more finely determine an adjustment result.

The utility model relates to the technical field of railway maintenance engineering, and discloses a movable ballastless track bed concrete crushing device which comprises a steel rail walking frame, a transverse moving trolley, a rotating frame, a hydraulic power station, a lever mechanism and a hydraulic crusher, the steel rail walking frame can move in the longitudinal direction of the steel rail. The transverse moving trolley can transversely move perpendicular to the steel rails. The rotating frame is connected with the transverse moving trolley through a universal mechanism capable of horizontally rotating and pitching up and down; the hydraulic power station is installed on one side of the rotating frame, and the lever mechanism is installed on the other side of the rotating frame. The hydraulic crusher is vertically arranged and connected to the end, away from the rotating frame, of the lever mechanism through a universal hinge mounting frame. According to the utility model, the hydraulic crusher can be conveniently and quickly moved to a construction position to crush the concrete of the ballast bed slab of the ballastless track, and meanwhile, a hydraulic power technology is adopted, so that the working intensity of constructors can be greatly reduced, and the improvement efficiency is improved.

The present invention belongs to the technical field of devices for bridge maintenance engineering, and in particular relates to a modularly assembled steel pipe intersecting node drilling device and a method for using the same. The present invention provides a modularly assembled steel pipe intersecting node drilling device, which can be configured by arranging a U-shaped rotating block unit, a gear unit, an electric drill mounting unit, a blocking block unit, and a labor-saving drive rod on a slotted disc unit, so that: 1. the electric drill's jacking and punching action is powered by the labor-saving drive rod, so the punching operation is relatively more labor-saving and efficient; 2. the electric drill's lifting and punching action has an angle adjustment function at the U-shaped rotating block unit and an anti-drop function at the blocking block unit, so the entire steel pipe intersecting node drilling and crack prevention operation is more accurate and safe.

The present invention belongs to the technical field of maintenance engineering for rotating equipment in nuclear power plants, and particularly relates to an assembly tool for the static ring seat of the mechanical seal of the main pump in a nuclear power plant. It is equipped with a lifting plate, which can ensure uniform force during the disassembly and assembly of the static ring seat of the mechanical seal, smoothly rise and fall, avoid the skew of the static ring seat, avoid the risk of damage to equipment and personnel caused by using a hammer, is simple to operate, time-saving and labor-saving, reduces personnel radiation, eliminates the crane operation steps, and saves the construction period.

The application belongs to the technical field of nuclear power plant rotating equipment maintenance engineering, and particularly relates to a device for fixing a motor rotor in a circulating seawater pump of a nuclear power plant. The device is tightly attached to a bearing fastening bolt through a locking assembly, so as to reduce the shaking of the fastening bolt and effectively solve the problem of motor vibration caused by the loosening of the bearing fastening bolt, thereby ensuring the normal operation of the seawater circulating pump.

The utility model discloses a special board for power transformation operation and maintenance, and belongs to the technical field of power operation and maintenance engineering. Comprising a touch panel and a recording board rotationally hinged to the touch panel, a front camera and a rear camera are fixedly arranged on the touch panel, a storage card is detachably installed on the side face of the touch panel, and the special board for power transformation operation and maintenance is formed by rotationally hinging the touch panel and the recording board, so that the touch panel displays a power diagram of a power transformation system. Environment information of an operation and maintenance power transformation system can be obtained through photographing, verification work of a fault point physical picture and an electric power diagram is achieved, operation and maintenance personnel are assisted to confirm an operation and maintenance fault point more accurately, the multiple operation and maintenance recording tables installed on the recording board can achieve one-chasing page turning processing according to the installation sequence, the operation and maintenance recording function of a paper table is achieved, and the operation and maintenance efficiency is improved. And in addition, the hand is inserted between the supporting belt and the recording plate for use, so that the phenomenon that the hand slips out of the hand can be effectively avoided.

The invention discloses a power grid technical improvement and maintenance project investment estimation control method and system, and the method comprises the steps: dividing the cost into a fixed cost and a variable cost during project cost budgeting, carrying out the rolling adjustment of the total cost of a project according to the impact of variable factors in the variable cost, and guaranteeing the accuracy of project cost budgeting, meanwhile, the project is divided into a plurality of stages, the cost of the project in different stages is estimated respectively, in the construction process, the project can be managed in stages, the cost can be controlled in stages, and the problem that the cost is difficult to control and adjust in time due to the fact that the total cost is large and the total project amount is large is solved. And the control effect of the investment cost of the power grid technical improvement and maintenance engineering project is improved.

The utility model discloses a quick reloading device for road maintenance engineering, which comprises a maintenance platform, the upper end face of the maintenance platform is obliquely arranged, the lower end face of the maintenance platform is provided with a plurality of groups of outer frames, the plurality of groups of outer frames are symmetrically arranged in pairs, and the plurality of groups of outer frames are internally connected with sliding blocks in a sliding manner; and the two sets of sliding blocks located on one side are jointly and fixedly connected with a side plate, the outer wall of the side plate is rotationally connected with two sets of cleaning rollers, and a sliding mechanism for driving the sliding blocks to slide is installed in the outer frame. Through the design of the threaded rod and the sliding block, adjustment of the height and the position of the cleaning roller is achieved, when bristles of the cleaning roller are abraded, an operator can drive the sliding block to slide by adjusting the threaded rod, so that the position of the cleaning roller is adjusted up and down, the bristles continue to make full contact with the ground, and the requirement for frequent replacement after the bristles are abraded is avoided; the service life of the bristles is prolonged, and the maintenance cost of equipment is remarkably reduced.

The invention belongs to the technical field of nuclear power station rotating equipment maintenance engineering, and particularly relates to a multi-stage horizontal centrifugal pump core pulling device. The core bag supporting frame is fixed on the pump shell; the two ends of the roller are connected with the roller frame through the sliding bearings, and the clamping springs A are clamped in grooves in the two ends of the roller and used for fixing the sliding bearings. The roller frame is connected with the core package supporting frame through a bolt A, and a nut A is in threaded connection with the bolt A and used for locking the roller frame and adjusting the height of the roller frame; the dummy shaft A is in threaded connection with the pump shaft; the guide cylinder is fixed on the dummy shaft A; the bearing is in interference fit connection with the bearing shaft, the bearing is placed in a groove of the roller frame, the bearing shaft penetrates through a hole of the support below the guide cylinder, and the clamping spring B is clamped in the groove of the bearing shaft and used for limiting axial movement of the bearing shaft; the driving end supporting frame is fixed to the pump shell. And the center of the rotor core in the pump shell can be accurately adjusted, so that stable movement in the axial direction is realized, the labor intensity of maintenance personnel is reduced, the working efficiency is improved, and the risk caused by hoisting machinery is reduced.

The invention discloses a management method for an IDC operation and maintenance knowledge graph, and relates to the technical field of data center operation and maintenance engineering, and the method comprises the steps: collecting and processing operation and maintenance distribution parameters, operation and maintenance graph construction parameters and operation and maintenance management correlation coefficients of a data center, and obtaining operation and maintenance management features of the data center; constructing a multi-modal operation and maintenance management model by using the features and a corresponding operation and maintenance management method, receiving data center to-be-operated and to-be-managed features to be processed by the data center, and constructing the model to process the data center to-be-operated and to-be-managed features to generate a real-time operation and maintenance management method for operation and maintenance; according to the method, the improvement proportion parameters are set after operation and maintenance of the data center by adopting the feature correction knowledge graph method and the data center, and the operation and maintenance management method is carried out on the graph network model constructed by the operation and maintenance knowledge keywords and the constructed knowledge graph parameters, so that unique data processing of operation and maintenance of the data center is realized, operation and maintenance management is more automatic, and the operation and maintenance efficiency is improved. Operation and maintenance resources are saved, operation and maintenance risks are reduced, and operation and maintenance management rationality is enhanced.

The invention relates to the technical field of bridge demolition and maintenance engineering, and discloses bridge demolition waste treatment equipment and a method thereof.The bridge demolition waste treatment equipment comprises a rack and a magnetic roller, a rotating shaft is fixedly connected to the outer wall of the magnetic roller, a reinforcing strip is fixedly connected to the bottom of the rack, and an adjusting mechanism is arranged on the outer side of the rotating shaft; an adjusting mechanism is arranged on the rack and used for adjusting the intensity of a magnetic field of the magnetic roller, a cleaning mechanism is arranged on the outer side of the rack and used for cleaning scraps remaining on the magnetic roller, an auxiliary mechanism is arranged at the bottom of the rack and used for assisting the device in moving, and the adjusting mechanism comprises a matrix plate. According to the invention, the intensity of the generated magnetic field can be flexibly controlled by adjusting the current to the electromagnetic block, and the magnetic field can drive the phase column to generate displacement so as to change the distance between the magnetic system and the magnetic roller, so that the continuous adjustment of the magnetic field intensity on the surface of the magnetic roller is realized, and a basis is provided for efficiently sorting materials with different magnetisms.

The invention provides a turboshaft engine accessory disassembly and assembly time prediction method based on maintenance process attributes, which belongs to the technical field of maintenance engineering prediction, and comprises the following steps: carrying out maintenance task decomposition in combination with maintenance guidance information and kinematic decomposition of a time measurement method to obtain a maintenance task; obtaining a plurality of maintenance operation units and a plurality of basic maintenance actions in the maintenance operation units; performing six-dimensional maintenance attribute evaluation based on a language evaluation set on each basic maintenance action to obtain a corresponding six-dimensional time correction coefficient set; determining maintenance time of the plurality of basic maintenance actions by using a time measurement method; correcting the maintenance time of each basic maintenance action through the maintenance time correction model and the six-dimensional time correction coefficient set; and the corrected maintenance time of all the basic maintenance actions in all the maintenance operation units is calculated in an accumulated mode, and the turboshaft engine accessory disassembly and assembly time based on the maintenance process attributes is obtained. According to the method, the accuracy and practicability of the disassembly and assembly time estimation of the turboshaft engine accessory can be improved.

The invention discloses a fuselage maintenance task pool generation method and device, equipment, a medium and a program product, and belongs to the technical field of aviation maintenance engineering. The method comprises the following steps: acquiring planned maintenance requirement data of a target fleet, and analyzing the planned maintenance requirement data to obtain an analysis result; determining a fuselage maintenance task based on the analysis result, and obtaining an MRS number, an applicability definition and an interval definition of the fuselage maintenance task; obtaining a target work card number according to the mapping relation table and the MRS number; performing matching according to the applicability definition to obtain a target aircraft, and obtaining an aircraft sampling type and a tail number of the target aircraft; generating a task interval type based on the historical task processing state, the aircraft sampling type and the interval definition; calculating a task expiration date of the body maintenance task according to the task interval type; and constructing a fuselage maintenance task pool. According to the embodiment of the invention, the accuracy and efficiency of calculating the expiration date can be improved, so that the efficiency of generating the fuselage maintenance task pool is improved.

The invention relates to the technical field of railway engineering, and discloses a reinforced steel rail connecting device capable of reducing track irregularity, which comprises a steel rail body, a plurality of fixing screw holes formed in the side wall of the steel rail body, two long clamping plates symmetrically placed in the two side walls of the steel rail body, a plurality of positioning holes formed in the side walls of the long clamping plates, and a reinforcing seat, the reinforcing seats are arranged on the two sides of the long clamping plates and the lower portions of the steel rail bodies, a plurality of transversely-arranged limiting holes and bolts are symmetrically formed in the two sides of the reinforcing seats, the bolts are used for connecting the steel rail bodies, the long clamping plates and the reinforcing seats, the bolts sequentially penetrate through the fixing screw holes, the positioning holes and the limiting holes, then nuts are connected with the bolts, and therefore the two sections of steel rail bodies are connected. The device is suitable for a heavy haul railway or a coal mining subsidence area railway, the bending rigidity of the steel rail connecting position can be improved, the rail irregularity of the steel rail connecting position is reduced, the maintenance work amount of the steel rail connecting position is reduced, vibration generated when a train passes through can be reduced through the stable connector, and the operation safety is improved.

The invention discloses a high-precision robot for treating tunnel water leakage, and belongs to the technical field of tunnel maintenance engineering machinery. The robot comprises a track moving vehicle, an active anti-tipping mechanism, a six-degree-of-freedom mechanical arm, a drilling device, a grouting system, a quick mounting structure and a visual scanning system. The track moving trolley moves on the tunnel track to achieve moving positioning. The active anti-rollover mechanism is used for upwards jacking a tunnel segment through an adjustable supporting leg driven by a worm gear and a worm so as to provide anti-rollover stable support; the visual scanning system performs global scanning and modeling through a first visual scanning unit, and performs accurate positioning of a working point by using a second visual positioning unit; the six-degree-of-freedom mechanical arm can quickly change and mount a drilling device or a grouting head through a quick mounting structure, and precise drilling and quantitative grouting operation are sequentially executed; full-automatic, high-precision, continuous and efficient operation of tunnel leakage water treatment is achieved, and the defects of manual treatment and existing equipment in the aspects of stability, precision and efficiency are effectively overcome.

The utility model discloses a power transformation maintenance engineering ladder which comprises two groups of vertical rods, a plurality of groups of cross rods are fixed between the vertical rods at equal intervals, rubber sleeves are sleeved at the bottom ends of the vertical rods, supports are mounted on one side walls of the vertical rods, a bearing shaft is arranged between the supports, a rotating block is sleeved in the middle of the bearing shaft, and the rotating block is fixedly connected with the vertical rods. Limiting rings are arranged at the two ends of the rotating block correspondingly, and a fastening bolt is installed on one side wall of the rotating block. The tool box has the beneficial effects that by arranging the bearing shaft, the rotating block, the rotating shaft and the tool box body, in the using process, a worker can rotate around the bearing shaft through the rotating block to turn over the tool box body, and then the tool box body is adjusted to the horizontal position under the action of the rotating shaft; and therefore, temporary placement positions are provided for parts disassembled in the maintenance process through the tool box, the situation that workers are not changed is avoided, and the maintenance efficiency and the using effect of the device are improved.

The invention belongs to the technical field of water supply and drainage, and particularly relates to a water supply and drainage integrated system which comprises a data integration module used for integrating data; the pipe network leakage management module is used for managing leakage in the pipe network; the big data analysis module is used for carrying out real-time query and efficient analysis on mass data; the patrol maintenance management module is used for realizing networking and intellectualization of a pipe network maintenance and management system process; and the maintenance engineering management module is used for enhancing field management and paperless examination and approval in the implementation process of the water supply network engineering project, optimizing the project management process, providing decision support for the engineering project, promoting the remarkable improvement of the management level and efficiency, and meanwhile, supervising and examining a project construction unit. The problem that an existing water supply service line and an existing water drainage service line are separated all the time can be solved, and the performance, cost, efficiency and the like can be remarkably improved.

The utility model discloses a concrete spraying and curing device, and belongs to the technical field of bridge curing equipment manufacturing. The concrete spraying and curing device comprises a water storage bin, a spraying mechanism and a moving trolley, wherein the water storage bin and the spraying mechanism are both fixed on the moving trolley. The device is suitable for concrete bridge maintenance engineering, is especially suitable for occasions with insufficient field power supply and special requirements on spraying distance and height, saves the cost, and improves the spraying efficiency of the concrete maintenance engineering.

The application discloses a fastener for a spaceflight sealing device and belongs to the technical field of spaceflight fastening structures. When a locking piece after sealing glue solidification is disassembled, a special-shaped sink is first inserted, a rotating disc is quickly rotated, the rotating disc drives a friction shaft to rotate, the friction shaft generates heat in the sink hole, the heat is conducted to a stud, the temperature of friction heats the solidified sealing glue, after the sealing glue is melted, the special-shaped through groove on the screw head is rotated through a hexagonal screw cutter, and the whole fastener can be taken out. The fastener can be non-destructively removed in the state of being hit by the sealing glue without relying on other heating tools, the disassembly integrity of the workpiece is guaranteed, damage to the threads of the structural parts is not easy, the whole locking piece structure is compact without gaps, has the physical characteristics of high strength and deformation resistance, the fastener is convenient to disassemble, the part damage rate is reduced, and the part cost is saved for the maintenance engineering in the spaceflight field.

This invention relates to the field of computer technology and discloses a method for optimizing equipment maintenance personnel configuration based on multi-factor dynamic coupling. The method includes acquiring status characteristic information such as equipment age, technical complexity, and average daily utilization time; determining corresponding influence coefficients; calculating the maintenance requirements for a single unit based on baseline maintenance workload; and summarizing the total maintenance requirements for the equipment group. Further, correction factors such as personnel capability equivalent coefficient, cross-site collaboration coefficient, on-duty availability coefficient, and resource balance coefficient are determined. The total maintenance requirements are then corrected item by item in the order of capability conversion, collaboration adjustment, on-duty correction, and resource balance compensation, outputting the required number of maintenance engineers. This invention enables refined and optimized equipment maintenance personnel configuration, improves the accuracy and adaptability of personnel allocation, and reduces operation and maintenance costs.

The utility model discloses a modularized sun gear disengagement device of a walking speed reducer for engineering machinery, relates to the technical field of transmission of engineering machinery, is used for solving the technical problem of tire locking caused by damage of internal parts in traditional maintenance engineering, and can realize quick decoupling and separation of a sun gear assembly when the walking speed reducer breaks down. According to the modularized sun gear disengaging device of the walking speed reducer for the engineering machinery, a spiral sleeve of a spiral sleeve locking module is matched with an end cover through trapezoidal threads, and the threads are fine threads; the anti-loosening system is provided with a clamp spring groove at the end cover, and a check ring for a hole is assembled in the clamp spring groove; the dynamic sealing assembly adopts an O-shaped sealing ring at the end cover and the spiral sleeve, and the O-shaped sealing ring is used for preventing oil leakage of a gear box in the speed reducer.