275 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 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 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 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 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 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 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.

The invention provides a carrier rocket storage tank weld joint repairing method which comprises the following steps: aiming at a carrier rocket storage tank weld joint, firstly, filling a weld joint defect or damaged part in a friction stir additive mode; carrying out stirring friction treatment on the interface; and finally, laser shock or ultrasonic shock is adopted to further regulate and control residues of the repaired part, and therefore high-reliability repairing is achieved. Friction-stir additive filling repair and friction-stir treatment strengthening are conducted on the weak link of current storage tank weld defect or damage repair, a repair structure nearly free of metallurgical defects is obtained, meanwhile, the surface stress state of a repair layer is improved, the fatigue performance of a welded joint is remarkably improved, and the welding quality is improved. And therefore, the requirement of repeated use of the carrier rocket storage tank welding structure is met.

The invention discloses a prestressed concrete box girder bottom damage repairing and reinforcing structure and a construction method, and relates to the field of bridge reinforcing, the prestressed concrete box girder bottom damage repairing and reinforcing structure comprises an external prestressing tendon, a micro-expansion UHPC and a supporting steel plate, the external prestressing tendon is used for being connected with the micro-expansion UHPC in the girder length direction of a damaged concrete box girder, and the supporting steel plate is used for supporting the damaged concrete box girder. Tensioning and fixing at the top of a bottom plate of the damaged concrete box girder; the micro-expansion UHPC is used for filling a damaged area of a bottom plate of a damaged concrete box girder through a filling pipeline which is pre-buried on the bottom plate of the damaged concrete box girder in advance, and the filling pipeline comprises a mud jacking pipe and an exhaust pipe; the supporting steel plate is used for being anchored to the bottom of a damaged area of a damaged concrete box girder bottom plate in the beam length direction of the damaged concrete box girder. The external prestressing tendons, the micro-expansion UHPC and the supporting steel plates jointly form a stress system, and the bearing capacity of the damaged concrete box girder is remarkably improved.

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 aims to provide the high-performance subsea tunnel damage repairing material, and the repairing material has excellent bonding strength, erosion resistance, water resistance, mechanical property and durability, and can effectively repair damage and cracks generated in a tunnel. Comprising the following components in parts by weight: 60-73 parts of superfine cement, 5-8 parts of sulphoaluminate cement, 6-8 parts of a CSA expanding agent, 8-12 parts of mineral powder, 8-12 parts of fly ash microspheres, 40 parts of 20-40-mesh quartz sand, 10 parts of 40-70-mesh quartz sand, 30 parts of 70-110-mesh quartz sand, 0.1-0.2 part of a defoaming agent, 25-27 parts of water, 1.5 parts of a water reducing agent, 1-3 parts of nano silicon dioxide, 8-12 parts of PTB emulsion and 1-2 parts of butadiene-styrene rubber powder. When tunnel cracks and damaged parts to be repaired are filled with the crack repairing material, the operation time does not exceed 30 min, the curing time is about 12 h, and the crack repairing material is suitable for operation in a humid environment.

The utility model, which relates to the technical field of circuit board repairing, discloses a folding and pressing damage repairing device comprising a machine table provided with a material carrying table, a fixing mechanism, a conveying mechanism, a repairing mechanism and an adjusting mechanism. When the material repairing device is used, a material to be repaired is placed on the material carrying table and fixed through the fixing mechanism, then the position of the repairing pressing head is adjusted through the adjusting mechanism, the bottom of the repairing pressing head is flush with the top face of the material, and then the conveying mechanism drives the material carrying table to move under the repairing pressing head. And when passing through the repairing pressure head, warped edges or bumps on the material are flattened by the repairing pressure head, so that the material is repaired by folding and pressing damage, manual repairing is not needed, and the repairing efficiency is improved.

This invention discloses a tunnel segment damage repair device, comprising a base plate, clamping devices on both sides of the base plate, and a supporting excavation device on the upper side of the base plate. The supporting excavation device includes a support ring with stepped holes and anchor rods inside the stepped holes. A circular shaft is rotatably connected to the base plate, and the circular shaft is driven to rotate and move axially by a driving device. A disc is fixedly connected to the upper end of the circular shaft, and the disc has a slag discharge channel. A first blade is fixedly connected to the side wall of the slag discharge channel. A sliding groove is provided at the bottom of the disc, and a sliding plate is slidably connected within the sliding groove. A second blade is fixedly connected to the outer end of the sliding plate. A sliding block is slidably connected to the support ring, and a support rod is hinged between the sliding block and the sliding plate. This invention allows the support wheel to continue rolling onto a second arc block. Because the second arc block has the largest diameter, the outer contour of the second blade is the largest, exceeding the diameter of the segment rupture. This is suitable for excavation operations in confined spaces, facilitating the subsequent formation of stepped pouring blocks, and providing greater support strength than direct filling repair methods.

The invention discloses an evaluation device and method for the damage repair effect of an oil and gas well tubular column, and the device comprises a simulation tubular column which is provided with a containing cavity and a simulation leak; the pressure detection module is used for detecting the internal pressure of the simulation tubular column; the heating simulation assembly is used for heating the simulation tubular column; the pressurization simulation assembly is used for pressurizing the simulation tubular column; the spraying assembly comprises a pressure pump, a piston container, a connecting pipe and a spraying head which are sequentially communicated, the connecting pipe is provided with a shut-off valve used for controlling connection and disconnection of the connecting pipe, the spraying head stretches into the containing cavity through the connecting pipe, and the connecting pipe is configured to be capable of moving relative to the simulation pipe column so as to adjust the position of the spraying head relative to the simulation leak. By applying the method and the device, the actual repairing process of the pipe column in actual application can be more accurately simulated, and the accuracy of repairing effect evaluation is improved. And the repairing effect of the nozzle at different positions can be simulated, and the repairing process can be optimized.

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 local damage repair process and material based on a power plant concrete member. According to the intelligent curing agent disclosed by the invention, due to the unique components, multiple beneficial effects are brought to local damage repair of the concrete member of the power plant. A layer of compact protective film is formed through polymer latex, moisture is effectively locked, moisture evaporation is reduced, and it is ensured that the repairing material is fully cured in the initial curing stage. Due to the addition of the nano silicate, the infiltration capacity of the curing agent is further enhanced, so that the curing agent can penetrate into a concrete microstructure and react with a cement hydration product to form firmer silicate hydration gel, and the compactness and strength of the repairing material are improved. By adding the antibacterial agent, the growth of microorganisms on the surface and in the repairing material is effectively inhibited, biological erosion is prevented, and the long-term stability of the repairing material is ensured. The anti-aging agent effectively resists the aging effect of environmental factors such as ultraviolet rays and oxygen on the repairing material, and the service life of the repairing material is prolonged.

The invention discloses application of a stenotrophomonas maltophilia metabolite and a product of the stenotrophomonas maltophilia metabolite. The invention identifies a skin symbiotic bacterium, namely stenotrophomonas maltophilia, and provides an application of a metabolite of the stenotrophomonas maltophilia in anti-aging. The metabolite can regulate the balance of oxidized glutathione and glutathione in cells, improve the oxidation-reduction state in the cells, and regulate the internal oxidation-reduction balance and damage repair from the cellular level. The anti-aging scheme can fundamentally adjust the essential process of aging, and is high in effectiveness and good in persistence. The bacterial strain is a skin symbiotic bacterium, the metabolite of the bacterial strain is naturally compatible with the skin microecology, the adverse reaction can be reduced, the safety is good, and the affinity is high. The anti-aging effect of the stenotrophomonas maltophilia metabolite provided by the invention is verified by multi-dimensional experiments with quantitative indexes, and the stenotrophomonas maltophilia metabolite has strong scientificity and high reliability. The application scheme also provides another thought for developing more safe, effective and lasting anti-aging products, and the application potential is huge.

The utility model provides a ballast bed damage repairing structure. The ballast bed damage repairing structure comprises a ballast bed, a sleeper and a supporting piece. The track bed is provided with a pull rod groove. The ballast bed is provided with a pull rod groove for containing the connecting rod mechanism. And the ballast bed is also provided with a mounting groove for mounting a sleeper. The mounting grooves are positioned on two sides of the pull rod groove. The supporting piece comprises two side plates. The two side plates are vertically fixed in the pull rod groove and attached to the sleeper. According to the ballast bed damage repairing structure, the side plates are used for positioning the sleepers. And the side plates are fixedly connected to the interiors of the pull rod grooves, so that the side plates can stably limit the sleepers, and the sleepers are prevented from shaking. Meanwhile, the side plates can be made of steel plates, have good toughness and cannot be easily broken due to vibration of the sleeper. And the durability of the repaired ballast bed is ensured.

The application discloses a reservoir dam trash holding device and belongs to the technical field of dam trash holding equipment. The application comprises a main body intercepting net and a linkage mechanism. The linkage mechanism for damage repair is arranged behind the main body intercepting net. The application has the advantages that the surface of the damaged intercepting fence can be automatically repaired, the rapid emergency interception can be completed, the accident expansion can be avoided, the damage event can be converted into temporary emergency coverage, the normal use of the trash holding device can be ensured, the damaged part of the intercepting fence can be maintained by the staff, the water filling curtain and the fence net are modularly arranged, the specific intercepting fence damage area can be repaired individually, the superfluous of large-scale repair can be reduced, the other areas can be repaired individually when damaged, the water filling curtain is filled with water and powered by the natural transformation of the water flow by the rotating impeller, and the advantages that the additional power supply equipment is reduced and the consumption of external energy is reduced are achieved.