149results about How to "Reduce the difficulty of repair" patented technology

The invention discloses an environment-friendly converter bedding-face repairing material and a preparation method thereof. The repairing material comprises the following ingredients by weight percent: 30 to 65 percent of sintering magnesium sand, 10 to 45 percent of waste magnesite-chrome bricks, 1 to 10 percent of asphalt powder, 5 to 15 percent of tar, 1 to 5 percent of ethanol, 1 to 5 percent of N-methyl-2-pyrrolidinone and 0 to 5 percent of o-xylene. The preparation method comprises the following steps: 1) pre-crushing the sorted sintering magnesium sand and recycled waste magnesite-chrome bricks; 2) uniformly mixing the pre-crushed sintering magnesium sand and waste magnesite-chrome bricks to obtain a mixed coarse material; 3) finely crushing the mixed coarse material to obtain a mixed fine material; 4) uniformly mixing the mixed fine material and asphalt powder in a stirring machine; 5) adding tar, ethernol, N-methyl-2-pyrrolidinone and o-xylene, and stirring the mixture for 10 to 25 minutes. The practices prove that the converter repairing material has good mobility, can be sintered easily, has long service life and generates little smoke when sintered.

The invention discloses an assembling multi-section beam center support steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part ofthe full bolts without the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, a precast concrete-profiled steel plate composite slab or a poured concrete slab is assembled to form an assembling multi-section beam center support steel frame structure system capable of self-centering afterthe earthquake.

The invention relates to the technical field of heavy metal remediation of farmland, in particular to a foliar fertilizer, a preparation method and a method for reducing cadmium pollution of crops andaims to reduce the content of heavy metal cadmium in edible parts of crops. The foliar fertilizer is prepared from the following raw materials: 5-10 parts of soluble selenium, 60-80 parts of solublesilicon, 5-10 parts of chitosan, 20-30 parts of ascorbic acid, 140-160 parts of deionized water and 2-5 parts of absolute ethanol. According to the foliar fertilizer, a new idea that the inhibitor issprayed to foliage of crops for inhibiting transfer of heavy metals from the crop section of a soil-plant system to edible parts so as to remedy heavy metal pollution of cultivated land is provided.

The invention belongs to the technical field of bridge engineering and relates to a connector-free steel and ultrahigh-performance concrete combined bridge deck structure and a construction method thereof. The bridge deck structure comprises a steel bridge deck slab, a bridge deck pavement layer is paved on an ultrahigh-performance concrete layer which is paved on the steel bridge deck slab; the upper surface of the steel bridge deck slab is provided with protruding lines, and the lower portion of the steel bridge slab is provided with longitudinal stiffening ribs and transverse stiffening ribs. Compared with a steel and ultrahigh-performance concrete combined bridge deck structure with welding stud connectors, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantages that welding of a great quantity of shear connectors is avoided, and construction and repair difficulty of bridge decks can be lowered. Compared with a traditional orthotropic steel bridge deck structure, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantage that technical problems of fatigue rupture of steel structures and proneness to damages of the pavement layers can be effectively solved according to the scheme. Moreover, the connector-free steel and ultrahigh-performance concrete combined bridge deck structure has the advantages of convenience in material acquisition, structural simplicity, quickness in construction, force reasonability and high technical and economical benefits.

The invention discloses a fracture plate metal inert-gas (MIG) arc welding additive remanufacturing method. The fracture plate MIG arc welding additive remanufacturing method comprises the first stepof measuring the geometrical defect size of a component/part, specifically, the defect size of the fracture part is measured, and the three-dimensional defect size of the fracture part is obtained; the second step of total planning of piling, specifically, by combining the three-dimensional defect size of the fracture part, according to piling heights and widths under different welding piling rates, the number of single-layer weld passes and the number of layers are determined; the third step of optimizing a single pass welding process, specifically, the welding piling rate at the arc startingposition is reduced, and the welding piling rate and welding gun inverse motion at the arc quenching position are improved; the fourth step of optimizing an interlayer path, specifically, the pilingpaths of every two adjacent layers are opposite in moving direction; and the fifth step of cooling, specifically, in the whole welding process, water cooling and/or air cooling are/is carried out on the fracture piece in real time. By means of the method, rapid recovery of the geometric size of size damage of the fracture is achieved, the heat accumulation effect is reduced, the remanufacturing size precision and service performance are improved, the repairing difficulty is lowered, and maneuverability is high.

The invention discloses a submarine optical cable with an optical unit longitudinally-wrapped copper strip structure and a preparation method thereof, and the submarine optical cable comprises an optical unit, a copper strip, a sheath, an outer armored steel wire, a first PP rope, an asphalt spacing layer and a second PP rope, the surface of the optical unit is longitudinally wrapped by the copperstrip, and the sheath is arranged on the outer surface of the copper strip;the inner surface of the copper strip is partially or completely covered with an adhesive film. glue is arranged between theouter surface of the optical unit and the inner surface of the copper strip or the glue film for bonding, and the edges of the copper strip are partially overlapped for lap joint and fixation. By means of the mode, the sea optical cable of the optical unit longitudinally-wrapped copper strip structure and the preparation method thereof optimize a traditional feed type submarine optical cable structure, reduce self-weight and material cost without argon arc welding, achieve longitudinally-wrapped fixing and sealing of the copper strip on the surface of the optical unit through matching of theadhesive film and glue, ensures the strength and the sealing performance of the lap joint position, and reduces the copper strip repairing difficulty and the construction risk.

The invention discloses a cold region abandoned sand yard amphibian degraded habitat restoring method. The method comprises the following steps of 1 restoring scheme design, 2 geomorphic type modification, 3 rapid vegetation restoring and 4 ecological habitat building. The habitat quality of amphibians can be rapidly and effectively improved, then, the biological diversity of the water ecosystem is improved, the ecosystem functions are restored, and the method is low in cost, good in ecological benefits, and suitable for being used and popularized in regions seriously and physically disturbedby cold region rivers.

The invention relates to an orthogonal plywood shear wall-concrete core tube mixed lateral-load-resistance system. The system includes an orthogonal plywood shear wall, a concrete core tube, replaceable energy-dissipation connectors, a concrete foundation, prestressing swing supports, a first post-tensioned unbonded prestressing bar, a second post-tensioned unbonded prestressing bar, a first steelshim and a second steel shim. The orthogonal plywood shear wall is connected with the concrete core tube through the several replaceable energy-dissipation connectors, the concrete core tube is connected with the concrete foundation through the first steel shim, the second steel shim and the several prestressing swing support, the first post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device, and the first post-tensioned unbonded prestressing bar runs through the orthogonal plywood shear wall longitudinally and is fixed by an anchorage device and the second post-tensioned unbonded prestressing bar runs through the concrete core tube longitudinally and is fixed by an anchorage device. Compared with the prior art, the system can effectively reduce the damage of orthogonal plywood wallboards and concrete shear walls in an earthquake, energy-dissipation components are easily replaced, and the difficulty and cost of post-earthquake repair can be reduced.

The invention discloses an assembling multi-section beam steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part of the full boltswithout the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, a precast concrete-profiled steel plate composite slab or a poured concrete slab is assembled to form an assembling multi-section beam steel frame structure system capable of self-centering after the earthquake.

The invention provides a GOA circuit repairing method. Through a repairing signal line (L1), Repair signals are connected into an <N>th-level and <N + 1>th-level GOA unit circuits and are used as output signals of the <N>th-level GOA unit circuit and scanning control signals of the <N + 1>th-level GOA unit circuit respectively to achieve repairing of the <N>th-level GOA unit circuit, or through a starting signal line (L5), starting signals (STV) are connected into the <N + 1>th-level GOA unit circuit and an <N + 2>th-level GOA unit circuit and are used as output signals of the <N + 1>th-level GOA unit circuit and scanning control signals of the <N + 2>th-level GOA unit circuit respectively to achieve repairing of the <N + 1>th-level GOA unit circuit respectively, meanwhile, through the repairing signal line (L1), Repair signals are connected into the <N + 2>th-level and <N + 3>th-level GOA unit circuits and are used as output signals of the <N + 2>th-level GOA unit circuit and scanning control signals of the <N + 3>th-level GOA unit circuit respectively to achieve repairing of the <N + 2>th-level GOA unit circuit, the repairing difficulty of the GOA circuits can be lowered, the yield of GOA products can be improved, and production cost is lowered.

The invention discloses a post-earthquake self-resetting assembled multi-section beam shear wall steel frame, which is characterized in that a I-shaped steel beam is connected with different forms ofspecial-shaped columns through web angle steel and flange angle steel to form a weldless full-bolt connection mode; a middle I-shaped beam is connected with end I-shaped beams through web connecting plates and high-strength silicone rubber plates to form a weldless full-bolt connection mode with good ductility and strong energy dissipation ability; prestressed steel cables are applied to the junction of the weldless full-bolt middle I-shaped beam and the end I-shaped beams to form prestressed post-earthquake self-resetting nodes, and prefabricated concrete-profiled steel plate composite floorslabs or poured concrete floor slabs are assembled after the nodes are sequentially connected to form a post-earthquake self-resetting assembled multi-section beam shear wall steel frame structure system.

The invention relates to a repair method for a steel storage tank corrosion pit and belongs to the technical field of welding. A pit after repair comprises three parts, including aluminum for filling up the pit, an aluminum-sprayed erosion resistant coating on the inner surface and a carbon fiber sheet back-up coat on the outer surface. In the repair method, the aluminum for filling up the pit plays the roles of smoothing tank wall and facilitating construction of the erosion resistant coating in later period and delaying of tank wall corrosion because the erosion resistant coating is used as a positive pole after corrosion perforation; the aluminum-sprayed erosion resistant coating on the inner surface can isolate direct contact between stored matter and steel of the tank wall and play the roles of delaying or even stopping further erosion and protecting the tank wall; the carbon fiber sheet back-up coat on the outer surface plays the roles of solidifying the tank body and shearing internal pressure so as to prevent discarding of the storage tank caused by the fact that the tank wall is thinned and cannot bear internal pressure. The combined use of the three parts can lastingly and effectively protect and solidify the storage tank.

The invention discloses a local corrosion-resistant scanning type micro-arc oxidation treatment process for a shipboard aircraft. The process comprises the following steps: polishing and completely washing a to-be-repaired area of a part; setting an insulating layer on the edge of the to-be-repaired area and setting a flow guide glue strip in the to-be-repaired area; starting a scanning type micro-arc oxidation treatment device, uniformly spraying electrolyte in the to-be-repaired area to perform micro-arc oxidation reaction on the to-be-repaired area, generating a micro-arc oxidation ceramiclayer in the to-be-repaired area and turning off the scanning type micro-arc oxidation treatment device; cleaning the micro-arc oxidation ceramic layer and blow-drying with hot air. The process and the device are suitable for repairing the to-be-repaired part on site, the parts do not need to be disassembled, the repairing efficiency is improved, and the repairing difficulty is reduced.

The invention discloses an assembling multi-section beam center prestress support steel frame capable of self-centering after earthquake. An I-beam is connected with special-shaped columns of different forms through a web angle steel and a flange angle steel to form a connecting form of full bolts without weld seams; a middle I-beam is connected with an end I-beam through a web connecting plate and a high-strength silicone rubber plate to form a connecting form of full bolts without weld seams with good ductility and high energy consumption; a prestressed steel cable is applied at the connecting part of the full bolts without the weld seams of the middle I-beam and the end I-beam to form self-centering nodes after the prestressed earthquake, and after the nodes are connected in sequence, aprecast concrete-profiled steel plate composite slab or a poured concrete slab assembling prestress center support member is assembled to form an assembling multi-section beam center prestress support steel frame structure system capable of self-centering after the earthquake.

The invention discloses a casing damage well thin walled pipe patching device, and belongs to the technical field of casing pipe repair. The casing damage well thin walled pipe patching device comprises a patching pipe, an expansion cone of which the lower end is arranged inside the patching pipe, an upper sealing ring arranged at the upper end of the outer wall of the patching pipe and a lower sealing ring arranged at the lower end of the outer wall of the patching pipe, wherein a middle conical section of the expansion cone and a first conical section are matched with each other, high-pressure power liquid is injected into an inner cavity between the expansion cone and the patching pipe through a through hole formed in the center of the expansion cone, under driving of pressure difference force, the expansion cone moves to the upper portion of the patching pipe from the lower portion, the patching pipe continuously expands in the process that the expansion cone moves inside the patching pipe till the patching pipe is attached to the casing pipe, the patching pipe is permanently deformed under the effect of the expansion cone, and reinforcement of the thin walled pipe of a casing damage well and repair of loopholes are achieved. By the adoption of the upper sealing ring and the lower sealing ring, the sealing effect after the casing damage well is repaired is guaranteed, the repair cost and the repair difficulty of the casing damage well are lowered, and the well drilling cost is very obviously lowered.

The invention provides a repairing method of an inner heat insulating layer. By trimming the damaged portion of the inner heat insulating layer, machining the to-be-repaired contact face of the innerheat insulating layer, machining the inner heat insulating layer for repairing and filling, performing surface treatment, using a gap heat insulation material to perform gap filling, adhering a sealing heat insulation pad to the joint position of the to-be-repaired surface, and adhering two-side polytetrafluoroethylene to treat varnished glass cloth and the like to achieve repairing of the inner heat insulation layer. According to the repairing method of the inner heat insulating layer, repairing is convenient, repairing can be performed just trimming the inner heat insulation layer at the damaged position, it is not needed to disassemble and replace a whole heat insulating module, and therefore influences by devices in equipment are avoided, and the repairing difficulty and the repairingworkload are reduced.

The invention discloses a double-support flange machining machine. The machine is used for machining a flange on equipment on site, and the main shaft of the double-support flange machining machine issequentially provided with an inner supporting plate, a knife rest and a shaft sleeve, plurality of screw holes are formed in the outer edge surface of the inner supporting plate, screw rods are arranged in the screw holes, supporting legs are arranged at the outer ends of the screw rods, a rotating arm is arranged on the knife rest, a feeding screw and a feeding motor are arranged on the rotating arm, a feeding screw is arranged on the feeding screw, a sliding knife holder is arranged on the feeding nut, an organic frame is arranged on the shaft sleeve, an outer supporting plate is fixedly arranged on the machine frame, the rotating motor, a plurality of pull rods are uniformly distributed on the periphery of the outer support plate, a pull rod nut is arranged at the outer end of each pull rod, the rotary motor drives the shaft sleeve to rotate, the longitudinal pushing motor is provided with a longitudinal pushing screw, a longitudinal pushing nut on the longitudinal pushing screw is provided with a connecting plate, the connecting plate is fixedly connected with the main shaft, the inner supporting plate is arranged in the flange hole, the pull rod is connected with the flangebolt hole, and therefore the rack is fixed on the flange plate, high-precision machining and repairing can be carried out on the butt joint surface of the flange on site, the repairing difficulty andthe repairing cost are reduced, the repairing efficiency is improved, and the working time is saved.

The invention provides an assembled pier using mixed reinforcements of ordinary steel bars and screw-thread steel bars. The assembled pier using the mixed reinforcement of the ordinary steel bar and the screw-thread steel bar comprises a concrete pile cap (1), assembled pier bodies (2), a through longitudinal bars (6) and an unbonded prestressing tendon (7) and is characterized in that the throughlongitudinal bars (6) are obtained by mixing the ordinary steel bars and the screw-thread steel bars; and the through longitudinal bars (6) and the unbonded prestressing tendon (7) connect the concrete pile cap (1) with each assembled pier body (2) to form a complete pier system.

The invention provides a fixture for solder paste printing, and the fixture is used for fixing a chip during solder paste printing. The fixture comprises a support plate, wherein, the front face of the support plate is equipped with a plurality of chip accommodating grooves, and the bottoms of the chip accommodating grooves are equipped with pin holes which are corresponding to the pins of the accommodated chips and penetrate through the rear face of the support plate. The fixture for solder paste printing has the advantages of lowering the repair difficulty and the repair cost, solving the difficulty in solder paste printing on a repair circuit board, and reducing the local damage degree of products caused by repair.

The invention discloses an in-situ remediation method for organic matter polluted soil. Firstly, organic matter polluted soil is simply pretreated; then, solubilizer/TiO2/CdS bentonite magnetic hydrogel microspheres are sprayed on the surface layer of the soil; organic pollutants are photo-catalytically decomposed under the irradiation of sunlight; the used solubilizer/TiO2/CdS bentonite magnetichydrogel microspheres are simple to prepare, can be separated and recycled under the action of an external magnetic field, and can be repeatedly used according to the organic matter pollution degree of soil; the soil remediation difficulty is greatly reduced, and the manpower and equipment are saved. In-situ remediation is carried out on the soil surface, the photocatalytic reaction speed is high,there is no pollutant selectivity, the remediation time is short, the soil remediation can be repeatedly carried out, the remediation method is suitable for soil with different pollution degrees, nopost-treatment is needed, no chemical reagent is used, no secondary pollution is generated, sowing can be directly carried out after remediation, and economic benefits are good.

The invention, which relates to the technical field of display, discloses a display panel and a display device. The display panel comprises an array substrate and a color film substrate which are oppositely arranged. A plurality of support columns are arranged between the array substrate and the color film substrate. The array substrate includes a substrate body, a plurality of data lines, a plurality of repairing lines and a plurality of pixel units arranged in an array, wherein the plurality of data lines, the plurality of repairing lines and the plurality of pixel units are arranged on thesubstrate body. Each pixel unit includes at least two sub-pixels arranged in a first direction; and each sub-pixel includes a thin film transistor. The support columns and the thin film transistors are at least stacked partially in a direction perpendicular to the array substrate; and the film thickness of the repairing line is d1 and the total film thickness of the source electrode of the thin film transistor and the semiconductor part of the thin film transistor is d2, wherein the d1 is smaller than or equal to the d2, the d1 is larger than 0, and the d2 is larger than 0. Therefore, the difficulty of repairing the data lines in the display panel is effectively reduced; meanwhile, the supporting performance of the supporting column in the display panel is not affected.

The invention discloses a box lunch vending machine, and belongs to the technical field of vending machines. The box lunch vending machine comprises a frame, a control system, a refrigeration system,a delivery system, and a heating system, wherein the refrigeration system is used for storing a box lunch to be sold, the delivery system comprises an internal delivery module which is used for movingthe box lunch to the heating system and an external delivery module which is used for pushing the box lunch out of the heating system, and the heating system is used for heating the box lunch. The box lunch vending machine in the invention separates the refrigeration system from the heating system and modularizes the refrigerating and heating functions, as a result of which if one function fails,all that is needed is to repair or replace the broken parts instead of inspecting and repairing the whole machine, thereby reducing the difficulty and cost in maintenance and repair.