31results about How to "Has a dual role" patented technology

The invention discloses a post-poured hidden coping construction method for converting simply supported beam into continuous beam. Plate girders are precast in a plant, are then connected with precast plate girders at two sides thereof via cast-in-situ copings so as to convert the precast plate girders into continuous beams, wherein the method of combining supports is adopted to carry out construction, in the method, a temporary support for installing the precast plate girders and a formwork support for installing the post-poured hidden copings are combined to be one, thus obtaining excellent effect.

The invention discloses a method and an apparatus for laser shock processing of a weldment at an ultralow temperature and aims to improve mechanical properties and corrosion resistance of a weldment through laser shock processing of the weldment at an ultralow temperature. According to the invention, the weldment is disposed in liquid nitrogen at an ultralow temperature, and the colorless transparent liquid nitrogen is used as a low temperature auxiliary environment and as a restraint layer for laser shock processing; thus, on the one hand, the apparatus for laser shock processing at an ultralow temperature is simplified, and on the other hand, laser shock processing of the weldment at an ultralow temperature is realized and the weldment serves at a same temperature, which guarantees consistency of the processing environment and the service environment of the weldment and thus enabling toughness, corrosion resistance and other mechanical performances of the weldment at an ultralow temperature to be improved.

The invention discloses an adjustable lifting cloth storage rack, which comprises a cloth storage rack upper frame, a cloth storage rack lower frame, a telescopic cylinder and sliding rods. Four corners of the cloth storage rack upper frame and four corners of the cloth storage rack lower frame are provided with supports; the sliding rods are vertically arranged on the supports and support the cloth storage rack upper frame and the cloth storage rack lower frame; upper guide roller groups are parallelly arranged on the cloth storage rack upper frame; lower guide roller groups are parallelly arranged on the cloth storage rack lower frame; and the adjustable lifting cloth storage rack is provided with an adjusting mechanism which comprises a driving steel roller, a driving device in drive connection with the driving steel roller, and a pinch rubber roller matched with the driving steel roller; the lower parts of the lower guide roller groups of the cloth storage rack lower frame are provided with at least two guide rollers; the lower part of the cloth storage rack upper frame is provided with a connecting piece; and the cloth storage rack lower frame is detachably connected with the connecting piece. Therefore, the positions of the cloth storage rack upper frame and the cloth storage rack lower frame can be adjusted, so that thin films are stressed uniformly and extended flatly.

The invention discloses a smart Internet of Things cloud monitoring service system for a roller shutter door. The system comprises a monitoring detector which monitors state information of a roller shutter door in real time. The monitoring detector is connected with a roller shutter door monitoring server. The roller shutter door monitoring server is in communication connection with a network monitoring server, a cell phone intelligent network device monitoring server and a roller shutter door network monitoring center server through a wireless transmission module. The system has real-time monitoring and early-warning functions, and can give an alarm in time, and a terminal is simple in structure and small in size, and can be taken along, thereby facilitating monitoring. Monitored information can be transmitted to a monitoring service center, and the monitoring center performs cloud storage on relevant information so as to evaluate risks of normal operation of the roller shutter door. According to the system, through network technology and communication facilities, the alarm has dual functions, and alarm reliability is improved.

The invention discloses a mold for manufacturing an obstructing and explosion suppression ball. The mold comprises a first seat plate, a second seat plate, a fixed mold mechanism, a movable mold mechanism, an ejecting mechanism, a cooling mechanism, a filling mechanism, a limiting mechanism, a resetting mechanism, an exhaust mechanism and a fixing mechanism; the fixed mold mechanism and the movable mold mechanism are arranged between the first seat plate and the second seat plate, an explosion suppression ball space for injection molding arranged in the inner part is of a thin-walled frameworkstructure, the ejecting mechanism ejects the explosion suppression ball, a sleeve barrel with magnetorheological fluid is additionally arranged on the resetting mechanism to actively control the displacement of a movable mold, the impact of vibration on an injection molding workpiece is reduced, the problems of complex structure, difficult manufacturing, low efficiency and high replacement rate of an explosion suppression filler are solved, and the advantages that the surface quality of the produced explosion suppression ball is smooth, shrinkage defects are eliminated, the wall surface can be thinner, the mass is less, the volume is small, and output is stable are achieved.

The invention discloses an adjustable lifting cloth storage rack, which comprises a cloth storage rack upper frame, a cloth storage rack lower frame, a telescopic cylinder and sliding rods. Four corners of the cloth storage rack upper frame and four corners of the cloth storage rack lower frame are provided with supports; the sliding rods are vertically arranged on the supports and support the cloth storage rack upper frame and the cloth storage rack lower frame; upper guide roller groups are parallelly arranged on the cloth storage rack upper frame; lower guide roller groups are parallelly arranged on the cloth storage rack lower frame; and the adjustable lifting cloth storage rack is provided with an adjusting mechanism which comprises a driving steel roller, a driving device in drive connection with the driving steel roller, and a pinch rubber roller matched with the driving steel roller; the lower parts of the lower guide roller groups of the cloth storage rack lower frame are provided with at least two guide rollers; the lower part of the cloth storage rack upper frame is provided with a connecting piece; and the cloth storage rack lower frame is detachably connected with theconnecting piece. Therefore, the positions of the cloth storage rack upper frame and the cloth storage rack lower frame can be adjusted, so that thin films are stressed uniformly and extended flatly.

The present invention relates to a kind of preparation method of α-azide aryl ketone derivative, this method is by adding substituted styrene, azidotrimethylsilane and oxidizing agent in Schlenk reaction bottle, then add water as solvent again, at a certain temperature , stirring and reacting under an oxygen atmosphere to obtain the azidation / oxidation product α-azide aryl ketone derivative.

The invention discloses a channel type and static heating combined fuel oil heating structure. The channel type and static heating combined fuel oil heating structure comprises a middle vertical platewith an arc-shaped horizontal section, wherein the surface of the side, facing the circle center of the fuel oil heating structure, of the middle vertical plate serves as the inner surface, and the surface of the other side serves as the outer surface; an inner heat dissipation plate and an outer heat dissipation plate are fixedly connected to the inner surface and the outer surface of the middlevertical plate in an attached mode, an upper support plate is connected to the top end of the middle vertical plate, a lower support plate is connected to the lower end of the middle vertical plate,and the upper support plate and the lower support plate are used for being connected with the inner surface of a shell of the fuel filter in a pressing mode, so that a gap is formed between the outerheat dissipation plate and the inner wall of the shell of the fuel filter, the shell is prevented from being heated directly, heat dissipated to the outside is reduced, and the fuel oil heating efficiency is improved. After the channel type and static heating combined fuel oil heating structure is adopted, a heating mode of combining channel type heating and static heating is realized, the heatingefficiency is higher, the energy loss is little, fuel oil at a channel is heated more uniformly, the fuel oil at the channel and static fuel oil are both heated, and the filter resistance when the fuel oil passes through a filter layer is reduced to the maximum extent while the energy is saved.

The invention discloses a method for synthesizing a 1,3-dimethyl-3-hydroxymethylindolin-2-one compound. The method is that N-methyl-N-aryl-acrylamide and potassium hydrogen monopersulfate are carried out in acetonitrile medium to carry out epoxidation-intramolecular Friedel-Crafts alkylation series reaction to generate 1,3-dimethyl-3 -Hydroxymethylindoline-2-one compound; the method has the advantages of mild conditions, simple operation, green environmental protection, easy availability of raw materials, excellent compatibility of substrate functional groups, and high reaction yield.

The invention discloses a toothpaste composition with effects of promoting discharge of heavy metal and improving immunity. The toothpaste composition comprises the following raw material components in percentages by mass: 0.1-3% of vitamin C magnesium ascorbyl phosphate, 0.1-3% of calcium glycerophosphate, 0.1-3% of licorzinc, 0.1-3% of selenium carrageenan and the balance of toothpaste substrate. The toothpaste has a certain discharge promoting effect on heavy metal accumulated in human bodies due to environmental pollution, and further can improve immunity, and people can be away from harmcaused by heavy metal pollution while oral cleaning and nursing are implemented.

The invention discloses a preparation method of 3-hydroxymethyl-4-phenyl-3,4-dihydroquinolinone compound. The method uses acetonitrile as the reaction medium, and potassium monopersulfate promotes the epoxidation of N-methyl-N-aryl-2-phenylacrylamide-intramolecular Friedel-Crafts alkylation series reaction to generate 3-hydroxymethyl ‑4‑phenyl‑3,4‑dihydroquinolinone compound; the method has the advantages of mild conditions, simple operation, environmental protection, easy access to raw materials, excellent compatibility of substrate functional groups, and high reaction yield.

The invention discloses a post-poured hidden coping construction method for converting simply supported beam into continuous beam. Plate girders are precast in a plant, are then connected with precast plate girders at two sides thereof via cast-in-situ copings so as to convert the precast plate girders into continuous beams, wherein the method of combining supports is adopted to carry out construction, in the method, a temporary support for installing the precast plate girders and a formwork support for installing the post-poured hidden copings are combined to be one, thus obtaining excellenteffect.

The invention discloses a side-entering type force increasing mud cutting mechanism. Before the side-entering type force increasing mud cutting mechanism works, the position of suspension is adjusted,and then the suspension is fixed with a fixing screw. A mud cutting cylinder acts, a piston rod of the mud cutting cylinder retreats, a sliding block moves upwards, a knife rack is pulled up by a pulling rod, a stop block presses downwards a force increasing spring, energy is stored, then a conveying belt is started, a combination of a support plate and a mud column is put onto the conveying belt, and the conveying belt drives the mud column to move forwards. When meeting with a position sensor, the conveying belt stops moving, the mud cutting cylinder acts to move the knife rack downwards till a mud cutting knife cuts off the mud column, at the moment, the stop block increases mud cutting force under the action of the force increasing spring, after the mud column is cut off, the knife rack retreats, and the force increasing spring stores energy and waits for the next time of work order. Through the side-entering type force increasing mud cutting mechanism, the problems that traditional mud cutting equipment is low in efficiency and low in automation degree, and cutting-off length cannot be adjusted are solved, meanwhile an automatic production line can be formed conveniently, andthe advantages of simple operation and good cut-off quality are achieved.

The invention belongs to the field of two-dimensional material preparation, and in particular relates to a method for preparing large-size single-crystal two-dimensional materials based on chemical vapor deposition. The method is as follows: using a mixture of carrier gas A and carrier gas B as the carrier gas, first constructing a nearly flat and slightly convex temperature field by setting the ratio of carrier gas A and carrier gas B, and then adjusting the ratio of the two to construct a flat and flat temperature field. A large-size single-crystal two-dimensional material is obtained through chemical vapor deposition; the carrier gas A is an inert gas, and the carrier gas B is a gas with different thermal conductivity from the carrier gas A. By introducing into the reaction chamber gas that does not participate in the chemical reaction of two-dimensional materials and has different thermal conductivity, the invention can effectively regulate the temperature field in the reaction chamber while strengthening the interaction between substances, and design and realize the two-dimensional material in the reaction chamber. The transition from the convex temperature field to the flat temperature field in the material growth region fully provides the temperature driving force, which in turn promotes the lateral growth of the core of the two-dimensional material, and finally obtains a high-quality large-size single-crystal two-dimensional material.

The present invention relates to a kind of preparation technology of 3-peroxy-2-indolone compound, this method takes 2-indolinone derivative as raw material, water is reaction solvent, and peroxide tert-butanol at a certain temperature and Under air conditions, the 3-peroxy-2-indolinone compounds were prepared in high yield. The inventive method does not use any additive, realizes C (sp in green solvent) 3 The peroxidation reaction of )-H bond has the advantages of simple synthesis and post-treatment process, low cost and environmental friendliness.

The invention discloses a dendritic graphene and a preparation method thereof, and relates to the field of graphene material preparation. The present invention utilizes copper salt and reducing agent to react under alkaline conditions, and self-assembles to form a dendritic three-dimensional copper substrate; through chemical vapor deposition technology, graphene is deposited on the dendritic three-dimensional copper substrate; adding corrosion solution to remove the copper substrate, namely Dendritic three-dimensional graphene was obtained. The dendritic three-dimensional graphene of the present invention has a good dispersion type, and effectively prevents problems such as stacking, porosity, and unstable configuration. The preparation process of the invention is simple, the conditions are mild, and the source of raw materials is wide, which is suitable for mass production and has broad application prospects.