380 results about "Damage repair" patented technology

A method of repairing a thermoplastic composite material is disclosed herein. The method includes placing the thermoplastic composite material on a supporting anvil, placing an energy transmission material on top of the thermoplastic composite material, and applying an ultrasonic welder to the thermoplastic composite material to consolidate and repair the thermoplastic composite material. Another method of repairing a thermoplastic composite material is disclosed herein. The method includes placing an energy transmission material on a supporting anvil, placing the thermoplastic composite material on top of the energy transmission material, and applying an ultrasonic welder to the energy transmission material to consolidate and repair the thermoplastic composite material.

The invention discloses a cable conductor damage repairing device and a repairing method thereof, and relates to the technical field of cable maintaining.The cable conductor damage repairing device comprises a base, a vertical plate is fixed to the top of the base, a cable base is fixed to one side of the vertical plate, a placing groove is formed in the top of the cable base, and a cable is placed in the placing groove; one side of the vertical plate is provided with an automatic glue spraying mechanism for automatically spraying glue to repair the damaged part of the cable; the invention relates to the technical field of cable maintenance. According to the cable conductor damage repair device and the repair method thereof, through the arrangement of the automatic glue spraying mechanism, the repair glue solution is automatically sprayed to the damaged part of the cable conductor, the damaged part is covered with the repair glue solution, manual glue coating repair is not needed, the automation degree is high, the glue spraying repair efficiency is greatly improved, and the labor intensity of workers is reduced. The glue spraying gun is driven to perform repeated glue spraying in a reciprocating manner in the horizontal direction through the arrangement of the driving reciprocating assembly, so that the repair glue solution can cover the damaged part in a large area, and further damage repair treatment of cables with different damage conditions is facilitated.

The invention belongs to the technical field of laser manufacturing and green manufacturing, and discloses an ultrahigh-power laser low-loss repair method for deep defects of a thick plate, which comprises the following steps: identifying the positions, types and three-dimensional shapes of the surface and deep defects (pores and cracks) of the thick plate through a phased array ultrasonic detection module (PAUT); on the basis, a laser space energy distribution repairing path for specific defects is automatically planned; carrying out an ultra-high power laser defect remelting process; finally, whether the surface and the deep part of the thick plate have defects or not is recognized again through the ultrasonic detection module, low-damage repair of the deep part defects of the thick plate is achieved, and the use efficiency and the service life of a repaired part are improved.

The invention belongs to the technical field of steel structure damage repair. The invention provides a large steel structure corrosion damage integrated repairing robot and a control method. The robot comprises a robot body, and a force control servo motor, an automatic polishing module, a damage identification camera, an air compression pump, a paint storage box, a control terminal, a magnetic adsorption module, a pipeline climbing module, a paint film thickness measuring module and an automatic paint spraying module which are arranged on the robot body. A robot compliance control strategy integrating force feedback, visual guidance and other modes is provided, dynamic parameter adjustment is combined, efficient and compliance control over the rust removal and spraying process of the repairing robot is achieved, the high efficiency and stability of the corrosion damage repairing process are ensured, and the corrosion damage repairing efficiency is improved. And flexible movement and efficient operation of the integrated repairing robot in a complex space structure are achieved.

The invention discloses a grinding device and a grinding method for curved surface component damage repair, and belongs to the technical field of machining equipment. The polishing method for curved surface component damage repair comprises the following steps that S1, hand-eye calibration and tool calibration are conducted, specifically, a transformation matrix of a 3D visual system coordinate system relative to a mechanical arm tail end center coordinate system is obtained, and a transformation matrix of a tool coordinate system relative to the mechanical arm tail end center coordinate system is obtained; s2, setting a polishing initial state: setting the polishing initial state of the mechanical arm by utilizing a dragging teaching function; s3, polishing path planning, wherein a point cloud model of the surface of the workpiece is obtained, and polishing path point information is obtained; s4, a mechanical arm grinding program is generated, specifically, a mechanical arm grinding motion control program is generated; and S5, a polishing procedure. According to the grinding device and the grinding method for damage repair of the curved-surface component, constant-force grinding can be conducted on the irregular surface of the curved-surface component, and it is guaranteed that the surface of the curved-surface component is ground more evenly.

The invention relates to the technical field of bio-based epoxy resin, and provides a three-functionality bio-based epoxy resin monomer, bio-based epoxy resin, a preparation method and a remodeling method. The bio-based epoxy resin monomer provided by the invention has a rigid benzene ring structure, is beneficial to improving the thermal stability and mechanical properties of the epoxy resin, and also contains a dynamic covalent bond Schiff base bond, so that the epoxy resin has a good surface damage repair function and a good remodeling function; in addition, the bio-based epoxy resin monomer provided by the invention has three degrees of functionality, so that the crosslinking density of epoxy resin can be improved. The bio-based epoxy resin monomer provided by the invention is prepared on the basis of protocatechuic aldehyde, compared with commercial epoxy resin, the bio-based epoxy resin monomer has the advantages of greenness, no toxicity and simple synthesis method, and consumption and dependence on petrochemical products can be reduced.

The invention discloses a cellulose insulation paper damage repairing method based on a mechanical enhanced microcapsule, and relates to the technical field of high voltage and insulation. According to the repairing method, damage repairing is conducted on cellulose insulation paper based on a mechanical enhanced microcapsule, the mechanical enhanced microcapsule is mainly prepared from a capsule wall and a core material, the capsule wall comprises polyurethane and nano-silica, and the core material comprises DCPD and a Hoveyda-Grubbs catalyst. The problems that a repairing agent leaks too early and the repairing efficiency is low due to the fact that microcapsules in traditional insulation paper are prone to being broken in advance under external stress are solved, damage repairing is conducted through the insulation paper containing the microcapsules, and the efficiency and accuracy in the repairing process can be improved.

The invention relates to the technical field of building maintenance management, and discloses a building use process maintenance management system and method based on artificial intelligence, and the system comprises a building maintenance control module, a building maintenance problem recognition processing module, and a building maintenance problem output module. An unmanned aerial vehicle carries a cloud lens to accurately collect an outer wall state image of a real-time inspection position of a building outer wall, and intelligent identification of a damage problem type of the building outer wall is carried out by combining an intelligent search algorithm and scientifically preset image information of different building outer wall damage types; based on an artificial intelligence algorithm, building outer wall damage type identification information and standard stored different building outer wall damage type repair process information are combined to carry out intelligent assessment on a damage repair scheme of the building outer wall, and meanwhile, building outer wall damage position coordinates are searched autonomously; intelligent data analysis of a building outer wall damage repair scheme and a damage position is realized, and intelligence and reliability of building maintenance operation are improved.

The invention discloses an old drainage pipe channel detection method and a damage repair method, and belongs to the technical field of construction, and the method comprises the steps: carrying out the data collection of an old drainage pipe channel, building a model according to the data, carrying out the regional detection of the model, surveying the surrounding environment of a first region, and finding the cause of a pipe channel problem. Summarizing data, deducing a second area, performing next step or data correction according to a deducing result, summarizing rules and causes of problems by comparing causes of the same problems of the pipe ducts at different positions, and performing simulated damage repair on the places with the problems; when repairing is carried out, the lining hose is arranged on the tubular frame in a sleeving mode, the lining hose is expanded through air pressure, the lining hose is cured through irradiation of an ultraviolet lamp tube, a detection method finds reasons from the surrounding environment and a pipe channel of the lining hose, so that problems are found more easily and solved from the source, waste of materials is reduced through the repairing method and the pipeline frame structure, and the repairing cost is reduced. And an integrated structure is adopted, so that construction is simple and quick.

The invention discloses a metal plastic deformation damage repair method based on high-frequency electric pulse, which comprises the following steps: S1, carrying out flaw detection on early damage of a damaged metal component, and determining a plastic deformation damage position in the metal component; s2, the damaged metal component is fixed to a pulse current processing device, and the damaged metal component and the exciting electrode are fastened through a clamp; s3, compressing the exciting electrode and the damaged metal component by using a high-temperature-resistant mica plate; and S4, pulse current signals are applied to the two ends of the damaged part, pulse current processing parameters are determined according to the size of the damaged metal component, and the damaged part is repaired through the determined pulse current parameters. According to the method, the problems of plasticity and toughness reduction, stress concentration, mechanical property reduction and the like caused by generation and accumulation of tiny plastic deformation of the material are effectively solved through pulse current repair, and meanwhile, the mechanical properties such as tensile strength of the material can be improved. And in-situ operation can be directly carried out by utilizing the electric pulse device, so that the material damage repair efficiency is improved.

The invention relates to the technical field of composite material damage repair, in particular to a method for repairing a composite material laminated plate with a fiber guiding characteristic. The repairing method comprises the following steps of pneumatic grinding, patch preparation, surface treatment, cleaning, adhesive film cutting, pasting, adhesive film curing, finishing and the like. According to the method, the adaptive patch is prepared by pneumatically polishing the rectangular cut hole of the stepped surface, the adhesive film is used for curing in the middle, and the adhesive layer is combined with the matched patch, so that a fiber-guided repairing structure is realized; under the condition that the structure repairing strength is guaranteed, the area for removing healthy mother board materials is reduced to the maximum extent, the probability of local stress concentration of a repairing bonding face is reduced, the machining difficulty is lowered, and the universality of repairing design application is improved. And by setting different step lengths, the stress load of the cementing repair surface is more uniform instead of being excessively concentrated on the 0-degree laying layer, so that the repair setting is more reasonable, and the service life of the repaired structure is prolonged.

The invention provides an underground tunnel local damage repairing device which comprises a drill rod, the drill rod is of a hollow structure, a spiral blade is arranged on the drill rod, and a first liquid conveying pipeline and a second liquid conveying pipeline which are used for conveying rapid hardening liquid are arranged in the drill rod; the liquid outlet end of the first liquid conveying pipeline extends to the position close to the drill bit and is fixedly connected with the side wall of the drill rod, a one-way valve is arranged on the first liquid conveying pipeline, and rapid hardening liquid can be conveyed out of the drill rod in a one-way mode through the first liquid conveying pipeline; the drill rod comprises a hot melting section, the side wall, distributed on the hot melting section, of the drill rod is made of a hot melting material and connected with a hot melting cable, a bag folded into multiple layers is arranged in the hot melting section of the drill rod, the liquid outlet end of the second liquid conveying pipeline is communicated with the bag, and rapid hardening liquid can be conveyed into the bag through the second liquid conveying pipeline. According to the device, the quick-setting liquid can be output from the top of the drill rod, underground water is prevented from entering a pipeline to generate sudden surging, the quick-setting liquid is secondarily conveyed to enable the bag to abut against the damaged position of the tunnel, and the damaged position can be permanently plugged after solidification and hardening.

The invention discloses a preparation method of a wave-absorbing adhesive for repairing a wave-absorbing honeycomb and a repairing method of the wave-absorbing honeycomb. The method belongs to electromagnetic wave-absorbing structure damage repair. The wave-absorbing honeycomb is used for preparing the wave-absorbing adhesive, and the preparation convenience can be improved while the complexity of a wave-absorbing honeycomb damage repair material system is reduced. In addition, by means of the repairing method, the influence of a repairing interface on the wave absorbing performance can be effectively reduced, and the original wave absorbing performance of the wave absorbing honeycomb can be better recovered.

The present invention relates to the technical field of aircraft absorbing honeycomb structure damage repair, specifically a method for repairing the electrical properties of damaged absorbing honeycomb cores, comprising the following steps: identifying and marking the outline of the damaged area of ​​the absorbing honeycomb core using nondestructive testing equipment; determining the material system, core cell dimensions, and electrical performance range based on the absorbing honeycomb core structural information; calculating the absorbing honeycomb core skeleton and the absorbing layer duty cycle based on the honeycomb core unit cell margins, wall thickness, and absorbing layer thickness; preparing a new absorbing honeycomb core corresponding to the size of the damaged area of ​​the absorbing honeycomb core, and using a cutting knife to cut along the periphery of the damaged area of ​​the absorbing honeycomb core to remove the damaged absorbing honeycomb core. The present invention selects a small, wave-transparent aramid paper honeycomb core as the skeleton, ensuring consistency with the absorbing honeycomb core material system and facilitating the restoration of mechanical properties. MATLAB mathematical calculation software can be used to calculate the target electrical properties of the adhesive under different small core structural parameters, enhancing the designability of the repair solution.

The invention provides a preparation method and application of dynamic crosslinked polyethylene for electrical damage repair, and belongs to the field of polyethylene cable insulating materials. The method comprises the following steps: carrying out rotary evaporation on polyethylene particles and peroxide to obtain semi-finished particles of mixed peroxide, and carrying out post-absorption to obtain a crosslinkable insulating material; adding a grafting monomer and a reaction monomer into the crosslinkable insulating material, and reacting in a molten state to obtain a mixed block material; and carrying out hot pressing treatment on the mixed block material to obtain the dynamic crosslinked polyethylene material. The dynamic crosslinked polyethylene material can repair a damaged area of an insulating layer through transformation and recombination inside the material after electrical damage is generated, so that the electrical performance of the cable insulating material is recovered. The dynamic crosslinked polyethylene material has relatively high mechanical properties and electrical properties, has self-repairing and recoverable characteristics, and can improve the reliability and prolong the service life of the cable.

The invention relates to the technical field of cable surface repairing, and discloses a cable damage repairing device which is composed of a rack, a rotary cleaning module and an injection system. The rotary cleaning modules are symmetrically distributed on the two sides of the center line of the rack, a cleaning wheel capable of rotating automatically is arranged in a main shell of each rotary cleaning module, a swing arm and a push-pull piece are arranged on the periphery in the circumferential direction, the main shell and a push-pull piece lug plate are hinged to the two ends of each swing arm respectively, and the push-pull pieces can move in the radial direction of the rack. The power mechanism is assembled on the peripheral side of the main shell to drive the cleaning wheel to rotate; a variable-pressure box body of the injection system is nested with a piston push rod, the piston push rod is rigidly linked with a push-pull piece through a connecting piece, and a nozzle regulator is arranged at the exposed end; when the push-pull piece is centripetally gathered, the included angle of the swing arm is reduced to push the cleaning module to be separated backwards to generate linear cleaning force; synchronously, the piston push rod is pulled to compress the repairing agent liquid cavity, and the pressure kinetic energy is increased along with the displacement gradient of the push-pull piece; in the whole process, collaborative operation of cleaning and repairing is achieved through mechanical linkage.

The invention discloses a fiber composite material based on hydrogen bond self-repairing and conductive self-diagnosis and a preparation method of the fiber composite material, and belongs to the technical field of intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials and preparation of the intelligent diagnosis and self-repairing fiber reinforced resin-based composite materials. According to the method, the problem that the self-healing effect cannot be timely obtained on the internal damage of the material due to the fact that the damage area cannot be accurately positioned and identified before the damage of the existing fiber composite material is repaired is solved. According to the invention, a quantum tunnel effect and a three-dimensional conductive skeleton are constructed by using a micro-nano multi-stage conductive filler composed of a nano carbon nanotube, micron flake graphite powder and unidirectional short carbon fiber, a damage occurrence position is realized based on an electro-mechanical corresponding relation, a self-sensing function is given, and accurate positioning of the damage is realized (the error is less than 1mm). A multiple reversible hydrogen bond system formed by acrylamide, polyethyleneimine and epoxy resin is further utilized, the self-repairing effect of the composite fiber material is achieved, and the test result shows that the self-repairing efficiency of at least 90% or above is achieved at the normal temperature.

The invention discloses an underwater stabilization and posture regulation and control system and method for underwater maintenance equipment, and belongs to the field of underwater concrete damage repair of hydraulic structures. The invention aims to solve the problem that the attitude is unstable due to the influence of water flow and waves when equipment moves in an underwater environment. According to the technical scheme, the device comprises a lower supporting module, a hydraulic rod, an oil pressure system, an annular mass block, a suspension steel cable and a posture regulation and control system composed of various sensors, namely an accelerometer, a gyroscope, an inclination angle observation instrument, a distance measuring sensor and the like; the core lies in that a PID controller receives sensor data and controls an oil pressure system to drive a hydraulic rod to adjust the position of an annular mass block so as to absorb and reduce adverse effects of an underwater dynamic environment, underwater stabilization and posture regulation and control are achieved, the posture of equipment is monitored and adjusted in real time, and the operation precision is ensured; stability and safety of the underwater maintenance equipment are improved, the underwater maintenance equipment is suitable for maintenance tasks in various complex underwater environments, applicability is wide, practicability is high, and maintenance and upgrading are convenient due to the modular design.

A degradable biomedical magnesium alloy drug-eluting vascular stent and a preparation method. With the total weight of a magnesium alloy being 100% for calculation, the magnesium alloy comprises the following components in percentage by weight: 3.0-6.0% of Gd, 2.5-5.5% of Y, 1.0-3.0% of Li, 0.3-1.0% of Zn, 0.2-1.0% of Zr, and the balance being Mg. The stent has good radial support strength and strain dispersion capability by means of finite element design. After a protective coating is used, the corrosion resistance of the magnesium alloy stent is greatly improved. An arsenic trioxide / rapamycin and tacrolimus composite drug sustained-release system is used to fully adapt to the damage repair process of blood vessels. An implantation result of large animals shows that the vascular stent system has a good anti-restenosis treatment effect.

The utility model discloses a high-pressure mechanical sealing surface damage repairing device which comprises a machine base, a gear motor is arranged on the upper portion of the machine base, a transmission shaft of the gear motor penetrates through the machine base, the lower portion of the transmission shaft is connected with an automatic feeding tool table, and a turning tool is arranged on the lower portion of the automatic feeding tool table. Fastening bolts are further arranged on the lower portion of the machine base, when the repairing device is installed, the machine base is fixedly installed on the overflowing part needing to be repaired, and it is ensured that fixation is compact. The device can be used for repairing a rotten and damaged sealing surface in an ore pulp pipeline system, so that field equipment can be put into use as soon as possible to recover production, and the production efficiency is improved.

The invention discloses a heterogeneous cultural relic fragment restoration method and system, a terminal and a storage medium, and the method comprises the steps: obtaining a plurality of to-be-restored cultural relic fragment images of a to-be-restored cultural relic, and carrying out the fragment source division processing of the plurality of to-be-restored cultural relic fragment images, and obtaining a plurality of source division compression packages; performing damage repair processing on the plurality of sub-source compressed packages to obtain a plurality of initial damage repair cultural relic images; and performing fragment splicing processing on the plurality of initial damaged and repaired cultural relic images to obtain a target damaged and repaired cultural relic image. According to the method, the to-be-repaired cultural relic fragment image is subjected to fragment source division processing, so that the cultural relic repairing accuracy and repairing efficiency can be effectively improved, further, the cultural relic after fragment source division processing is subjected to damage repairing processing and fragment splicing processing, repairing and reconstruction of the cultural relic fragments can be quickly realized, and the repairing efficiency of the cultural relic is improved. And the repairing effect of the cultural relic fragments is effectively improved.

The use of a divalent metal lactate in products for promoting tissue regeneration, growth, healing and damage repair, belonging to the technical field of biological medicines. Preferably, the divalent metal lactate comprises one or a combination of calcium lactate, magnesium lactate, zinc lactate and ferrous lactate. Provided is a new manner of treatment for tissue damage and repair, and prevention and treatment of tissue fibrosis and / or scar tissue generation, said manner of treatment having wide prospects of application in terms of damage treatment and repair of tissue such as skin, connective tissue, tendons and fascia.

Computer software and computer-implemented method for preparing an electronic data package in connection with a damaged vehicle for submission to the vehicle owner's insurance company for settlement of a claim or for use by an Original Equipment Manufacturer to determine compliance with established repair requirements. A computer-readable medium for storing executable software for preparing the package for a damaged vehicle, a computer system including the executable computer software stored in the computer-readable medium for preparing the package for a damaged vehicle damage are also disclosed. An electronic date package for vehicle damage repair is prepared by the computer-implemented method by executing the computer software stored in the computer-readable medium of a computer system.

The invention relates to the technical field of wind power blade maintenance and discloses wind power blade paint surface damage maintenance equipment and method.The wind power blade paint surface damage maintenance equipment comprises a moving trolley, a rotating disc frame is arranged on the moving trolley, and a grinding mechanism, a putty scraping mechanism and a spraying mechanism are arranged on the circumference of the rotating disc frame; a switching mechanism, a linkage mechanism, a reciprocating mechanism and an adjusting mechanism are further arranged on the moving trolley. The switching mechanism comprises a switching rack and a switching gear, and the switching rack is arranged on the mobile vehicle; the linkage mechanism comprises a driving assembly, a rotating assembly, a downward moving assembly, a rubber suction cup and a transverse rod. The effects of automatic polishing, putty scraping and spraying on the damaged part of the paint surface are achieved, so that the problem that manual repairing is needed is avoided, the position of a moving vehicle can be fixed while the moving vehicle can be automatically supported, and the working efficiency is improved. And the polishing mechanism, the putty scraping mechanism and the spraying mechanism can be automatically driven to move to the optimal working position.

The invention belongs to the technical field of biological medicines, and particularly relates to application of divalent metal lactate in a product for promoting tissue regeneration, growth, healing and damage repair. Preferably, the divalent metal lactate comprises one or a combination of more of calcium lactate, magnesium lactate, zinc lactate and ferrous lactate. The invention provides a new treatment mode for tissue injury and repair, and prevention and treatment of tissue fibrosis and / or scar tissue generation, and has wide application prospects in the aspects of injury treatment and repair of tissues such as skin, connective tissues, tendons, fascia and the like.

The invention discloses a preparation and application method of a super-lubricating coating based on a two-dimensional material. According to the invention, the charge density wave dynamic regulation and control mechanism of the fluorinated graphene and transition metal chalcogenide heterostructure is combined with the stress buffer characteristic of boron nitride, so that a slip interface with a low shear barrier is constructed on the atomic scale, and the energy dissipation in the friction process is remarkably reduced. A three-dimensional interpenetrating network of the helical carbon nanotubes and the hyperbranched polymer not only effectively inhibits stacking of two-dimensional materials, but also forms a multi-dimensional damage repair mechanism through solid-liquid phase change self-adaptive filling of the liquid metal and a boundary lubrication effect of the nano-diamond. Through the synergistic effect of the material system, the coating keeps the ultralow friction characteristic under the wide-range working condition, meanwhile, the coating has the composite protection capacity of abrasion resistance, high temperature resistance and corrosion resistance, and the intrinsic lubrication characteristic of the two-dimensional material is reserved while the compactness of the coating is guaranteed through the gradient cross-linking technology of ultraviolet curing and heat treatment.

The invention provides an irradiation bubble defect repairing method and system, electronic equipment and a storage medium, and relates to the technical field of irradiation damage repairing. The repairing method comprises the following steps: applying a pulse current with a preset current parameter to a to-be-repaired area of a target substrate so as to activate a target atom in an irradiation bubble defect in the to-be-repaired area; applying an ultrasonic stress field with preset ultrasonic parameters to the to-be-repaired area within a first preset time after the application of the pulse current is ended; within a second preset time after the ultrasonic stress field is applied, the temperature of the to-be-repaired area is reduced to a target temperature interval; and performing laser shock on the to-be-repaired area based on the pulse laser with the preset laser parameters so as to repair the irradiation bubble defect. According to the method, the irradiation bubble defect can be repaired through cooperative treatment of three stages (an activation stage, an ultrasonic stress field stage and a laser shock stage).

The invention discloses self-healing microorganism full-recycled concrete and a preparation method thereof, and belongs to the technical field of concrete materials. Modified microorganism-loaded ceramsite is adopted to load different microorganisms through a vacuum adsorption method and a soaking method; the concrete is composed of the high-alumina fly ash-slag cement, the microbe reinforced recycled fine aggregate, the microbe reinforced recycled coarse aggregate, water and the modified supported microbe ceramsite. When tiny damage is generated in the concrete, metabolism can be carried out through microorganisms attached to the recycled aggregate, then calcium carbonate is generated for damage repair, and when the concrete is greatly damaged, the modified microorganism-loaded ceramsite is damaged, and the microorganisms loaded in the ceramsite play a role to repair the concrete damage. Therefore, full-stage self-repairing of concrete damage is realized. Meanwhile, the materials adopt high-alumina fly ash, slag and recycled aggregate, so that the comprehensive utilization rate of industrial solid wastes and building solid wastes can be increased, and the environmental problems caused by the industrial solid wastes and the building solid wastes are relieved.

The invention relates to the technical field of slab joint construction methods, and discloses a construction method for prefabricated sandwich heat preservation shear wall external wall slab joints. Comprising the steps of external wall panel hoisting, external wall panel grouting, slab joint base surface treatment, component base layer damage repairing, slab joint width repairing, backing material filling, masking paper pasting, primer coating liquid brushing, sealant construction, drainage pipe placing, glue surface repairing, masking paper removing, slab joint part plastering and net hanging and external wall coating construction. The construction method includes the steps of external wall panel hoisting, external wall panel grouting, slab joint base surface treatment, component base layer damage repairing, slab joint width repairing, backing material filling, masking paper pasting, primer coating liquid brushing, sealant construction, drainage pipe placing, sealant surface repairing and external wall coating construction. According to the construction method of the prefabricated sandwich heat preservation shear wall external wall panel joint, through multiple procedures of cleaning of the inner side of the reinforcing panel joint and control and repair of the width of the reinforcing panel joint, the sealant construction requirement is met, effective bonding of the sealant and a peripheral concrete base layer is facilitated, and the construction efficiency is improved. The sealant at the slab joint part is effectively prevented from being separated from a concrete base layer, a glue joint is prevented from cracking, and a facing layer is prevented from cracking and falling off, so that the beneficial effects of meticulous and normative effects are achieved in the aspects of cleaning the inner side of the slab joint, controlling the width of the slab joint and controlling the filling depth of a backing material.