318results about How to "Guaranteed normal transportation" patented technology

The invention discloses a preparation method of gradient porous bioceramic scaffold. The method adopts the steps of preparing three-dimensional shells, pouring bioceramic slurry, freeze-drying and sintering to prepare porous bioceramic scaffold with relatively dense structure in the exterior and directional layered porous structure in the interior. The average flexural strength of the shell material reaches 28.5-35.6MPa; in addition, the porous bioceramic scaffold prepared by the method of the invention can be customized according to the individual differences of patients without relying on moulds for shaping and the invention is characterized by fast production; and the gradient porous bioceramic scaffold can be used in the field that artificial bone is used to repair pathological or injured bone tissues.

The present invention relates to a cantilever calculation and installation method of electrified contact line of high-speed railway, which comprises calculating the length of the flat cantilever, the length of the inclined cantilever pipe, the position of the positioning ring on the inclined cantilever and the cantilevers, preparing the cantilevers, and installing the cantilevers. The method belongs to the electromechanical field of rail traffic, in particular to the construction method of installing the flat cantilever and the inclined cantilever on the contact line of the high-speed railway. The method solves the problem that a large amount of line time is consumed in the construction because of the complex positioning of the flat cantilever and the inclined cantilever in the installation process. The construction method has high efficiency, makes full use of the time of non-closed points, accurately calculates and prepares the cantilevers, reduces a large amount of on-site adjusting time and railway holding time, and greatly improves the economic benefits.

The invention discloses bioactive glass-modified gelatin composite hydrogel as well as a preparation method thereof, and belongs to the field of biomedical materials. The bioactive glass-modified gelatin composite hydrogel is prepared by the following steps: the bioactive glass powder is added into a solution of modified gelatin containing a photoinitiator, ultrasonic treatment and stirring are carried out, uniformly dispersed materials are poured into a die, and after UV-irradiation is carried out for a period of time, the bioactive glass-modified gelatin composite hydrogel is obtained. The bioactive glass-modified gelatin composite hydrogel has good biological activity, osteoinductivity and high water content (which is 80% or above), and the product is used for the fields of non-bearing bone defect repair, slow release of medicament, bone tissue engineering, and the like.

A tissue-engineered bionic bone scaffold with high biocompatibility, bioactivity, degradability and osteoplastic induction has a three-layer structure composed of external degradable compact biofilm layer, central porous layer with less pore diameter for high mechanical strength, and internal porous layer with big pore diameter for transferring nutrients. Said central and internal layers are a composition consisting of in-situ formed nano-phase Ca-P salt and degradable biologic material.

The invention relates to a folding conveyor belt. The folding conveyor belt comprises rollers, side wheels, ejecting pillars, columns, universal wheels, folding arms, fixed shafts, telescopic rods, side shafts, bolts, cross shafts and cross shaft holes. The universal wheels are arranged at the bottoms of the columns, the telescopic rods are mounted in the middle positions of the columns, the topsof the columns are separately connected to the upper and lower cross shafts, the rollers are mounted on the cross shafts in a sleeving mode, ejecting pillars are separately mounted on two sides of therollers, the side shafts are arranged on the tops of the ejecting pillars, the side shafts and the side wheels are in interference fitting connection, the cross shaft holes are formed in the two endsand the middle positions of the folding arms, two ends of the cross shafts penetrate the cross shaft holes, separately, the folding arms are separately mounted on the outer sides of the ejecting pillars, and the folding arms are connected to the upper and lower cross shafts in a staggered mode. The folding conveyor belt designed by the invention is convenient to operate, convenient to fold and store and high in practicality.

The invention discloses a four-leg shield-type sublevel caving hydraulic support, which comprises four supporting hydraulic extension legs equipped on a pedestal. The top ends of the four supporting hydraulic extension legs are respectively hinged with a top beam; a forward extension beam is hinged at the front end of the top beam; a sprag is hinged at the front end of the forward extension beam, a sprag lifting jack is equipped on the forward extension beam, an ejector rod of the sprag lifting jack is hinged with the back part of the sprag; the back part of the top beam is hinged with the upper part of a shield beam; the lower part of the shield beam is hinged with the pedestal via the a four-bar linkage mechanism; a tail beam with box-shaped construction is hinged with the lower end of the shield beam, a tail beam lifting jack is equipped between the lower part of the tail beam and the lower part of the shied beam; and a slide track, an inserting plate equipped in the slide track and a inserting plate lifting jack for driving the inserting plate to carry out reciprocating movement along the slide track are equipped in the box of the tail beam. The invention is especially suitable for caving integrated mining working face under pitching coal bed, flat-pitching half hard coal bed and 'three-soft' coal bed conditions.

The invention provides a juice and dreg separation method. According to the method, a first upper press roller and a first lower press roller are arranged from up to down with a preset interval; and the first upper press roller and the first lower press roller are connected through a first synchronizer, so that the first upper press roller and the first lower press roller can rotate with the same rotating speed. A juice and dreg separation device provided by the invention can extract the juice of straw fragments according to the function of dregs after the juice of the straw fragments is extracted, so that straw can be fully utilized.

The present invention relates to the field of nucleic acid extraction, particularly to a nucleic acid extraction method and a kit. The kit comprises a nucleic acid chemical cracking solution and an inhibition component removing solution, wherein the nucleic acid chemical cracking solution comprises guanidinium isothiocyanate, N-lauroyl sarcosine sodium salt and PBS; and the inhibiting component removing solution comprises a mixed solution of an aluminum ammonium sulfate dodecahydrate solution and cross-linked polyvinylpyrrolidone (PVPP) and ammonium acetate. The nucleic acid extraction methodcomprises the following steps of chemically cracking a sample by adopting the nucleic acid chemical cracking solution, removing impurities, adsorbing the nucleic acid, and performing washing, eluting,and collecting to obtain the nucleic acid. According to the method, comprehensiveness and unbiased property in nucleic acid extraction are fully considered, purity and integrity of nucleic acid are also considered, loss in the process is reduced to ensure concentration, nesting can be formed for different types of biological or environmental samples, and broad-spectrum applicability of the extraction method is guaranteed.

The invention relates to a process for rapidly moving the equipment of large-mining-height ordered mining working surfaces. According to the present invention, the working surface to be retracted andthe working surface to be mined are the adjacent ordered mining working surfaces; the working surface to be retracted performs the terminal mining by combining the pre-excavation retracting channel and the net finishing so as to create the conditions for the retracting of the large-volume and large-tonnage comprehensive equipment; and during the installation of the working surface to be mined, thehydraulic bracket and the scraper conveyor are installed after the open-off cut working surface side coal wall is widened to 4 m.

Provided are a modular subgrade box, a steel trestle platform structure and a construction method thereof. The modular subgrade box comprises a subgrade box steel beam, a bottom plate, a top plate, astiffening rib plate and an end seal plate. The steel trestle platform structure comprises a modular subgrade box, a foundation pit structure and a supporting structure of each stage. The steel trestle platform structure comprises a steel beam, a bottom plate, a top plate, a stiffening rib plate and an end seal plate. The construction method is divided into stages. The invention breaks through thetransportation lifeline inside and outside the building, ensures the on-site material transportation, becomes the prerequisite for the smooth construction of the structure on schedule, and verifies the rationality of the temporary construction steel trestle road. Modular components are used to greatly reduce the workload of the site, the temporary construction steel trestle road is set up, and the transportation channel of the structure is opened. Modular components can be reused, practical maneuverability and reference value is greater, in line with the promotion and application of architectural assembly in China, for the future similar projects to provide new construction ideas, with the value of promotion and application.

The invention relates to new type air cooling multifunctional air conditioning refrigeration preserving system. It is made up of single screw no oil air compressor, tube ceramics ozone producer, freezing water ozone dissolving groove, ammonia refrigerating machine, ozone de-sorption groove, air cooling machine, cistern, water pump, spray head, preserving bank, pressure regulating water purifier, hot cold air generator. It has the advantages of no Freon air refrigerating, no pollution, no green house effect, and saving energy. It can fully replace the existing preserving technique, and makes people can enjoy secure meet, grain, fruit, and vegetable.

The invention provides a temporary fixing device and a construction method thereof. The device is used for being arranged between an upper buoyancy tank and a lower buoyancy tank in wet towing transportation of a novel semi-submersible type oil production platform. The device is characterized by comprising a plurality of base structures arranged above a deckhead of the lower buoyancy tank, plug pin structures which are in one-to-one correspondence to the base structures and arranged below an underdeck of the upper buoyancy tank and above the base structures, lower internal thread components fixed to the side faces of the base structures, upper internal thread components fixed to the side face of the upper buoyancy tank and located over the lower internal thread components, and studs with two ends fixedly connected with the lower internal thread components and the upper internal thread components respectively, wherein an opening is formed in the middle of each base structure, and each plug pin structure is inserted into the corresponding opening.

The invention belongs to drying equipment for removing liquids from solid materials or products and discloses a rotating drying cylinder. The rotating drying cylinder comprises an outer cylinder and an inner cylinder, the inner cylinder is built in the outer cylinder, a heating channel is formed between the outer cylinder and the inner cylinder, the outer cylinder is connected with a combustor, rolling rings and teeth rings are fixed on an outer circle of the outer cylinder, protruded vibrating bands are arranged on the outer wall of the inner cylinder along an axial direction, inner cavities are mounted on the vibrating bands, and steel balls are placed at positions of the inner cavities. The rotating drying cylinder has the advantages that the structure is simple, material bonding can be effectively prevented, and normal conveying of materials can be guaranteed.

The invention relates to the technical field of warehouse management, in particular to an intelligent warehouse cooperative robot and an application system and method thereof.The intelligent warehousecooperative robot comprises a main controller, a communication module, a positioning module, a navigation module, and a cargo label identification module,wherein the communication module, the positioning module, the navigation module, and the cargo label identification module are connected with the main controller. According to theintelligent warehouse cooperative robot and the application systemand method thereof, the problems that in the existing warehouse management, by adopting manual cargo classification and transportation, storage efficiency is low, and inaccurate classification due tohuman erroraresolved.

The invention provides a voltage regulating transformer which comprises a main transformer body and a string transformer body. The main transformer body comprises a main transformer public coil, a main transformer series-connection coil and a main transformer voltage regulating coil, wherein the main transformer public coil and the main transformer series-connection coil are in series connection with a wire inlet end, and the main transformer voltage regulating coil is in electromagnetic coupling with the main transformer public coil and the main transformer series-connection coil. The string transformer body comprises a string transformer primary coil and a string transformer secondary coil, wherein the string transformer primary coil and the string transformer secondary coil are mutually in electromagnetic coupling, the string transformer primary coil is in series connection with a main transformer voltage regulating coil, and the string transformer secondary coil in series connection with the main transformer series-connection coil is connected with a wire outlet end. A rank difference voltage regulating method of the voltage regulating transformer includes the following steps that transmission voltage in the string transformer secondary coil is changed through regulating of the number of turns of the connected main transformer series-connection coil; the number of turns of the connected main transformer voltage regulating coil is regulated, so that sensing voltage in the string transformer secondary coil is changed, the sensing voltage and / or the transmission voltage are / is regulated, so that voltage of the wire outlet end of the voltage regulating transformer is changed, wherein the voltage of the wire outlet end is equal to the algebraic sum of the transmission voltage and the sensing voltage.