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Fixing device for bridge group anchor and construction method
ActiveCN119615761Aeasy to controlSimple structureBridge erection/assemblyBuilding material handlingArchitectural engineeringStructural engineering
The invention relates to a fixing device for bridge group anchors and a construction method, the fixing device for bridge group anchors comprises a plurality of steel strands and anchor bearing plates, and further comprises a mounting frame, the mounting frame comprises a back plate and a plurality of partition plates, the partition plates are fixedly mounted on the back face of the back plate, the partition plates divide the back plate into a plurality of compartments, and round holes are formed in the portions, in the middles of the compartments, of the back plate; and the anchor boxes are fixedly installed in the compartments, and installation parts of the anchor boxes penetrate through the round holes, are located on the front face of the back plate and are suitable for steel strands to penetrate through. According to the fixing device, an installation pipe is fixedly installed on a fixing plate, a steel strand penetrates through the installation pipe, and a pipeline installation hole is formed in an installation part of an anchor box and used for installing the installation pipe in a penetrating mode; the angle of the anchor box is adjusted and fixed when the anchor box is mounted, then the mounting pipe and the steel strand are positioned and fixed, the influence on the mounting angle of the steel strand in the subsequent construction process is avoided, the incident angle of the steel strand can be accurately controlled, and firmness and reliability are achieved.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
Gearbox high-speed switch valve
PendingCN121932419Asave spaceEasy and quick to makeOperating means/releasing devices for valvesServomotor componentsPole pieceVALVE PORT
Owner:BEIJING SHAOSHI TECH CO LTD
A manufacturing process for an integrated non-invasive oxygen mask
The application relates to a manufacturing process of an integrated non-invasive oxygen mask, which comprises the following steps: S1, cutting first raw materials and second raw materials required for manufacturing the oxygen mask; S2, opening air inlet holes and air outlet holes; S3, assembling and fixing a gas connecting piece; S4, manufacturing a neck warmer fabric; S5, manufacturing a neck warmer; S6, welding a neck warmer air nozzle; S7, integrally fixing the neck warmer; S8, manufacturing a barrel-shaped side wall; S9, welding an air leakage prevention barrier sheet; S10, manufacturing a containing body for containing a patient's head; and S11, assembling a gas charging and discharging device. The application has the advantages of simple and fast manufacturing, low cost, high efficiency, integration after complete manufacturing, no need for the patient to assemble by himself / herself, immediate wearing after taking out when the patient needs to use, manual pressing of the gas bag to charge the neck warmer with gas, close contact of the air leakage prevention barrier sheet on the neck of the patient by the convex part of the gas bag, formation of a closed space in the oxygen mask, good airtightness, simple and fast wearing and taking off.
Owner:DONGGUAN JUNYE PLASTIC PROD CO LTD
Method for preparing gold nanoparticle coated with yolk-shell structure silica
This invention discloses a method for preparing gold-coated silica nanoparticles with an egg yolk shell structure. The method involves adding trisodium citrate solution, tannic acid solution, and sodium carbonate solution to a flask and stirring. After heating, chloroauric acid solution is added, and stirring continues while maintaining a certain temperature to obtain a gold nanoparticle solution. The gold nanoparticle solution, anhydrous ethanol, ammonia, and hexadecyltrimethylammonium bromide are then added to the flask, stirred, and resorcinol is added, with continued stirring. After the reaction, formaldehyde is added dropwise, followed by tetraethyl orthosilicate. The reaction product is washed multiple times with deionized water by centrifugation, dried overnight in an oven, calcined, and then washed multiple times with deionized water by centrifugation and dried in an oven to obtain gold-coated silica nanoparticles with an egg yolk shell structure. This one-pot sol-gel method is low-cost, simple, and rapid, producing gold particles with uniform morphology, a uniform silica shell thickness, and a large internal space within the egg yolk shell.
Owner:JIANGSU XFNANO MATERIALS TECH CO LTD
Preparation method of test paper type sample cell for liquid terahertz spectrum detection
PendingCN119595547Aeasy to uselow signal lossMaterial analysis by optical meansChemical modificationMaterials science
A preparation method of a test paper type sample cell for liquid terahertz spectrum detection comprises the following steps: step 1, carrying out surface microstructuring treatment on a substrate, generating a micron structure on the surface of the substrate, and carrying out chemical modification, natural airing or low-temperature thermal separation blow-drying on the substrate with the micron structure, so as to form a super-hydrophobic region and a region which is not soaked by a solution; the non-modified area has no super-hydrophobicity; step 2, setting an area for adsorbing liquid to be detected in the super-hydrophobic area, ablating to remove a chemical modification layer on the surface of the microstructure on the area by using a laser precision selective scanning method, and changing the area into a super-hydrophilic area to form a super-hydrophobic-super-hydrophilic patterned mixed surface, the test paper type sample cell is a test paper type sample cell with a super-hydrophilic surface and a super-hydrophobic-super-hydrophilic patterned mixed surface. The device is low in manufacturing cost and can be used as a disposable consumable; cleaning is not needed, and replacement can be carried out immediately after use; the operation is simple; and the signal loss is low.
Owner:XIDIAN UNIV
Porous laser-induced graphene electrode, preparation method, product and application
PendingCN119591094Aeasy transferEasy and quick to makeGrapheneMaterial electrochemical variablesGraphiteGraphene electrode
The invention provides a porous laser-induced graphene electrode, a preparation method, a product and application, and belongs to the technical field of environmental protection. The preparation method of the graphene electrode based on porous laser induction comprises the following steps: carrying out laser direct writing on the surface of an organic polymer film, and collecting a black material when the surface of the organic polymer film becomes black; and dispersing the black material in a solution, then coating the surface of a substrate electrode with the obtained dispersion liquid, and drying to obtain the porous laser-induced graphene electrode. According to the present invention, the porous laser-induced graphene electrode is adopted as the working electrode, and the porous laser-induced graphene electrode is adopted as the electrochemical sensor so as to be applied to detection of BPA in the actual environmental sample, such that the wide detection range, the low detection limit, the high sensitivity, and the good repeatability and the good stability are provided;
Owner:CHINA GEOLOGICAL SURVEY HAIKOU MARINE GEOLOGICAL SURVEY CENT
A special safety component for reinforcing installation of a building first floor sewage pipe
The utility model discloses a special safety component for building first floor sewage pipe installation reinforcement, include: sewage pipe support piece (1), sewage pipe support piece (1) is used for supporting sewage pipe (4), sewage pipe limiting piece (2), sewage pipe limiting piece (2) is connected to the both sides of sewage pipe support piece (1) symmetry or asymmetry, wherein, one end of each sewage pipe limiting piece (2) is connected with the outer wall of sewage pipe support piece (1), and the other end of each sewage pipe limiting piece (2) is connected with the steel mesh (7) on reinforced terrace (6) through limiting rope (5) and is connected as a whole or is directly anchored into plain concrete terrace. The utility model simple structure, novel and reasonable design can effectively reduce the risk of sewage pipe settlement cracking or joint drop due to backfill soil settlement during the use of sewage pipe, and when installing, it is simple and quick, and can be directly installed on the construction site without the aid of other tools, saving time and being efficient.
Owner:YUNNAN CONSTR INVESTMENT HLDG GRP CO LTD
Novel preparation method of pyrazoloquinoline compound
PendingCN121930229Aefficient synthesisEasy to manufactureOrganic chemistryHydrazine compoundQuinolizine
The invention provides a novel preparation method of a pyrazoloquinoline compound, which comprises the following step: reacting a 1, 6-eneyne compound with a hydrazine compound under the condition of normal-pressure air to generate the pyrazoloquinoline compound. The synthesis method is simple and rapid in preparation process, and does not need inert gas protection and use of a catalyst, so that the synthesis method is expected to be used for industrial production.
Owner:HUNAN UNIV OF SCI & TECH