120results about How to "Improve load stability" patented technology

A simple, strong handle for use as a grip for holding articles comprising a carabiner-like snap hook provided with a gripping surface of the proper size and shape to be comfortably held by a human hand. The snap hook has a generally C-shaped back portion on which the gripping surface is disposed, and a gate selectively attached to the back portion, forming a closed loop. Articles such as shopping bags and animal leashes received by the snap hook and secured by the gate may be held comfortably by the grip. The snap hook may be made of a variety of materials and shapes depending on the application and requirements of the user.

The invention relates to a data allocation strategy in a hadoop heterogeneous cluster. The data allocation strategy is characterized by comprising the following steps of: step S01, testing and storing execution time for each node to treat data with different scales, and transforming the execution time into a static performance reference index; step S02, monitoring and storing storage load of each node and network transmission speed between the nodes, and transforming the storage load and the network transmission speed into dynamic performance reference indexes; and step S03, calculating the quantity of data blocks to be allocated to each node by utilizing a calculating module according to preset weight of each performance factor, and performing data block-node mapping and carrying out allocation transmission by using a data allocation server. Through flexible configuration of each performance factor of the static and dynamic performance reference indexes, the data allocation strategy disclosed by the invention enhances the adaptability, ensures the effectiveness, effectively increases the data locality, reduces the operation response time and network transmission, improves the load stability of the system, and optimizes the cluster resources.

A fully moveable and totally contained fluid supply unit useful in supplying fluid such as water to a site in need of such fluid for drilling, fire control, clean up, and the like is provided comprising a skid or a trailer having mounted thereon a fluid reservoir for holding the fluid; a fluid pumping system for pumping fluids to said site; and an engine for providing prime power to operate the fluid pumping system.

An article carrier worn around the waist and setting on the back and hips having side entry compartments that are accessible to the person wearing the article carrier while wearing the carrier and a compression system that provides stability of the load being carried.

The invention discloses a vanadium manganese sodium phosphate @ 3D porous graphene composite material, a preparation method thereof, and applications of the vanadium manganese sodium phosphate @ 3D porous graphene composite material in sodium-ion batteries. The vanadium manganese sodium phosphate @ 3D porous graphene composite material is formed via in-suit growth of flaky vanadium manganese sodium phosphate on a 3D porous graphene skeleton. The preparation method comprises following steps: oxidized graphene is added into an aqueous solution containing a phosphorus source, a sodium source, a manganese source, and a vanadium source; ultrasonic dispersion is adopted, stirring reaction is carried out at room temperature, an obtained product is delivered into a reaction kettle for hydro-thermal reaction so as to obtain a hydrogel precursor; the hydrogel precursor is subjected to freeze drying so as to obtain an aerogel; and the aerogel is subjected to calcining so as to obtain a finished product. The vanadium manganese sodium phosphate @ 3D porous graphene composite material possesses excellent electrochemical performance as a sodium-ion battery cathode material. Operation of the preparation method is simple; cost is low; and commercial application prospect is promising.

A simple, strong handle for use as a grip for holding articles is disclosed comprising a carabiner-like snap hook provided with a gripping surface of the proper size and shape to be comfortably held by a human hand. The snap hook has a generally C-shaped back portion on which the gripping surface is disposed, and a gate selectively attached to the back portion, forming a closed loop. Articles such as shopping bags and animal leashes received by the snap hook and secured by the gate may be held comfortably by the grip. The snap hook may be made of a variety of materials and shapes depending on the application and requirements of the user.

A power supply apparatus is provided. The power supply apparatus includes a first power pin, a second power pin, a DC output regulator, a current sensing circuit, and a compensation circuit. The first and second power pins are coupled to an external load through a first wire and a second wire respectively. The DC output regulator receives an input voltage and a feedback voltage and generates an output voltage and an output current. The current sensing circuit senses the output current and generates a sensing voltage. The compensation circuit generates a compensation voltage responding to the sensing voltage. The compensation voltage is a sum of a voltage drop on the first wire and a voltage drop on the second wire. The compensation circuit compensates the output voltage according to the compensation voltage, such that a load voltage of the external load is kept at a stable voltage value.

The invention relates to a method for anchoring a load (26) to an anchorage (30) utilising at least one unitary anchoring tendon (10) including a plurality of tensile elements (12) each having a free length (14) and a bond length (18). The tendon is located lengthwise in a bore (34) formed through the load into the anchorage, and different groups (G1, G2, G3) of the strands of the tendon are tensioned in a predetermined sequence to a respective initial displacement length prior to the different groups being collectively tensioned to a respective final displacement length to anchor the load.

The invention relates to a multifunctional air purifying device. The device comprises a dust particle charging area (4), a prefilter screen (2), a strong parallel electric field dust-collecting part (1) and a photocatalytic decomposition layer (3) which are in sequential arrangement, wherein the dust particle charging area (4) is composed of corona electrodes (5) and a metal plate (8) with pore channels; the strong parallel electric field dust-collecting part (1) is a parallel strong electric field composed of electrode layers (7) and grid plastic plates (6) in alternate permutation distribution; and the photocatalytic decomposition layer (3) is arranged at the rear of the strong parallel electric field dust-collecting part (1). Compared with the prior art, the device provided by the invention is small, exquisite and compact, and has high efficiency of removing dust and bacteria; a graphene aerogel layer has strong adsorption capacity, is easy to functionalize, and can effectively absorb organic pollutants like formaldehyde; meanwhile, graphene aerogel has large pore specific surface area, high photocatalyst loading capacity and higher photocatalyst loading stability in air flow, and also can eliminate ozone generated in the process of electrostatic dust collection.

The invention relates to a three-dimensional graphene and nanometer titania composite photocatalyst and a preparation method thereof. The method comprises the following steps that 1, a 1.0 mg / mL-10.0 mg / mL aqueous graphene oxide solution is prepared; 2, nickel foam is taken and soaked in the aqueous graphene oxide solution, ultrasonic treatment is conducted, a nickel foam material loaded with graphene oxide is prepared, the material is dried, and a three-dimensional graphene oxide material is obtained; 3, haloid acid and titanium tetrachloride are sequentially dissolved in absolute ethyl alcohol, the three-dimensional graphene oxide material obtained in the second step is soaked in the solution, a reaction is conducted under the condition of 100 DEG C to 200 DEG C, heat preservation is conducted for 1 h to 6 h, cooling, separating, cleaning and drying are conducted, and the three-dimensional graphene and nanometer titania composite photocatalyst is obtained. The method inhibits lamination and irreversible agglomeration of graphene in the preparation process and greatly increases the specific surface area of graphene and the electron transmission rate, the size and morphology of obtained nanometer titania are controllable, and the photocatalytic effect of the photocatalyst is improved.

The invention discloses an anti-buckling low-frequency vibration isolation rubber support comprising a rubber support body and anti-seismic casing pipes arranged in the rubber support body. Laminatedrubber is adopted for the rubber support body. The low rigidity required by low-frequency vibration isolation is achieved by increasing the thickness of the rubber. The anti-seismic casing pipes are embedded in the support in the vertical direction and sequentially penetrate through the rubber support body from top to bottom, a restraining effect is achieved for the high-flexibility rubber supportbody in the horizontal direction, an anti-buckling function is provided for the rubber support body under the vertical large-load effect, and a horizontal earthquake resistance function is also provided for the support. Rubber layers or isolation gaps are arranged between the anti-seismic casing pipes and the rubber support body or between the anti-seismic casing pipes to avoid rigid contact, andthe environment vibration spreading route achieved through a rigid contact face is isolated. By means of the anti-buckling low-frequency vibration isolation rubber support, low-frequency vibration isolation of environment vibration can be achieved, high bearing stability and anti-seismic capacity can also be ensured, and the anti-buckling low-frequency vibration isolation rubber support can be used for vibration isolation of civil engineering structures and all types of instruments and equipment.

A system and a method for an automated guided vehicle for transporting one or more objects, the automated guided vehicle including a chassis; a suspension system, the suspension system including a first arm coupled to the chassis via a first coupling and a second arm coupled to the chassis via a second coupling; the first arm pivotable relative to the chassis and about a first pivot axis; the second arm pivotable relative to the chassis and about a second pivot axis; one or more first movement structures associated with the first arm; one or more second movement structures associated with the second arm; the second arm arranged transverse relative to the first arm, the first pivot axis and second pivot axis are transverse to each other.

A switching power supply circuit includes: an error amplifier for amplifying a deviation between a reference voltage and a feedback voltage; a comparator for comparing the reference voltage with an output voltage of the error amplifier, and outputting a predetermined set signal; an ON-time control circuit for defining a period during which a switching element is ON; a flip-flop circuit which is set by the set signal to bring the switching element into an ON- or OFF-state, and is reset by an output signal of the ON-time control circuit to bring the switching element into an OFF- or ON-state; a ripple voltage detection circuit for connecting an integration circuit in parallel to an inductance coil, thereby detecting a ripple voltage contained in the output voltage; and a capacitor connected between the output side of the error amplifier and a junction of a resistor and a capacitor of the integration circuit.

The invention discloses a three-way tensile pressure-high hydraulic gradient action concrete corrosion test device and method. The method comprises applying constant compressive stress to a specimen through forward preload, applying reverse preload to a tensile steel plate bonded to the surface of the specimen and tensile bolts through a seal chamber steel plate in the tension side as a reverse force structure to realize constant tensile stress loading, applying axial compressive stress to a loading bar with a protection shell along a longitudinal direction, monitoring the stress state of the specimen in the corrosion process through tension and pressure sensors and supplying preload and axial pressure in good time. Through combination of sealing of the specimen tension side with the structure glue and a high elastic rubber tube, the pressure solution flows into the specimen from the top and flows out of the specimen from the bottom so that hydraulic gradient action is formed, and a water pressure sensor monitors corrosion solution pressure in the solution chamber in the corrosion process and supplies the solution in good time to keep stable pressure. In the solution chamber, one or more osmotic corrosion environments such as sulfate and chloride environments are provided. The device has a string structure and can carry out three groups of tests simultaneously.

The invention relates to a preparation method of epoxy resin-based polymer monolithic column; a given quantity of the epoxy resin and firming agents and a low molecular weight polymer mixture with a good compatibility used as pore-forming agents are added in an empty tube column; solidification temperature is controlled so as to regulate the speed of polymerization reaction; after the solidification is finished, the pore-forming agents are removed by washing so as to get the polymer monolithic column. The preparation process of the invention is simple and environmental friendly. The invention also discloses a dedicated mould. The monolithic column can be made into various specifications and forms as required and has the advantages of evenly distributed aperture, adjustable size, strong hydrophilic property, acid and alkali resistance, solvent resistance and good thermostabilization; and a large number of reactive functional groups are contained in the chemical constitution of the material of the monolithic column, which is suitable for performing a plurality of chemical modifications to an inner surface of a pore canal so as to further functionalize. The preparation method of the epoxy resin-based polymer monolithic column can be applied extensively to the fields such as the extraction and recovery of solid phase, the preparation of chromatogram, the separation of biological medicines, the environmental protection and the catalysis etc.

The invention discloses a preparation method of a silver-based catalyst for degrading VOCs. The preparation method comprises the following steps: soaking an activated carbon fiber plate into a methanol solution, carrying out washing and drying, then, soaking the activated carbon fiber plate into a NaOH solution, and drying the activated carbon fiber plate; placing the obtained activated carbon fiber plate into a mixed solution of (NH4)2C2O4.H2O and KMnO4, adding hydrochloric acid to regulate the pH of a mixed system, then, placing the mixed system into a constant-temperature oil bath pan, carrying out stirring for a reaction, then, taking out the activated carbon fiber plate, and carrying out washing and drying; adding an ammonia solution into an AgNO3 solution, and carrying out stirring until the solution becomes transparent; soaking the obtained activated carbon fiber plate into the transparent solution, adding an H2O2 solution, and carrying out stirring; and finally, taking out theactivated carbon fiber plate, and carrying out washing, drying and calcining to obtain an Ag / MnO2-ACF catalyst. By using the method, the relatively strong VOCs adsorption is realized, meanwhile, the degradation rate and mineralization rate of VOCs are greatly increased, and the stability is also improved.

The invention discloses a catalyst for preparing iso-octanal through selective hydrogenation of iso-octenal, and a preparation method and application thereof. The catalyst is a metal-polymer compositecatalyst and comprises a polybasic acid cross-linked polymer matrix and a metal active component, and the polybasic acid cross-linked polymer matrix is obtained under the coordination cross-linking action of a polybasic acid cross-linking agent. The method is mild in reaction condition and high in iso-octanal selectivity, and the composite catalyst has the advantages of simple preparation process, high metal dispersity, and good stability.

The invention discloses a vibration isolator adjustable in damping and rigidity. The vibration isolator comprises damping adjusting systems, a rigidity adjusting system, an upper vibration isolation plate and a lower vibration isolation plate; the two ends of the damping adjusting systems are connected with the ends of the upper vibration isolation plate and the lower vibration isolation plate; one end of the rigidity adjusting system is embedded in the middle of the upper vibration isolation plate, and the other end of the damping adjusting system is fixed to the middle of the lower vibrationisolation plate; and the damping characteristic of the damping adjusting systems and the rigidity of the rigidity adjusting system can be adjusted between the upper vibration isolation plate and thelower vibration isolation plate. The vibration isolator adjustable in damping and rigidity has the advantages of being simple and compact in structure, high in adjusting flexibility and carrying capacity and excellent in vibration isolation.

The invention discloses a multi-stage structure electrode for electrolyzing water, and a preparation method of the multi-stage structure electrode. The preparation method comprises the following steps: carrying out electrochemical etching to obtain a primary-structure rough nickel net, depositing iron-based bimetal and alloy thereof on the surface of the rough nickel net according to different application purposes, and carrying out electrochemical oxidation in an alkaline electrolyte to form an iron-based bimetallic oxyhydroxide on the surface to obtain a tertiary structure. According to the method, the roughness of the surface of the nickel net is increased, anchoring sites are increased, and through the synergistic effect between the multi-stage structures, efficient catalytic activity is achieved while lasting durability is kept, and the performance is better than that of a loaded single-stage structure or a loaded double-stage structure; when the decomposition voltage reaches 2.0 V, the maximum current density can reach 10000 A / m<2> or above; the stability test after activation is that the performance remains basically unchanged after continuous hydrogen production for more than 100 hours at the current density of 6000 A / m<2>, and the electrode material prepared by the method shows excellent catalytic activity and stability, and is very suitable for industrial application of an electrolytic bath for electrolyzing water.

The invention discloses a hand-push movable photographic car which comprises a carrying plate, wheels and chassis, wherein the chassis are arranged below the carrying plate in parallel; the wheels comprise two groups of front wheels and two groups of rear wheels, which are respectively connected on the chassis through extending arms; the rotating shafts of the wheels are vertically equipped with connecting shafts for the wheels in an upward direction; the connecting shafts for the wheels are rotatablely connected on the ends of the corresponding extending arms; and the other ends of the extending arms are pivoted with the chassis through pivots which are vertically arranged. When in use, the hand-push movable photographic car is not limited by a guide rail, thus obtaining broader movable shooting range; when a shooting location is broader, the four extending arms can be stretched to load a small-sized rocker arm for shooting, thus enabling the wheels to support a car body more stably and obtaining broader shooting range; and while shooting in narrow sites such as an alley and the like, the four extending arms can be drawn back towards the middle part so as to adapt to various shooting locations, thus having the advantage of wide application scope.

The invention discloses a coconut fiber composite nanometer iron oxide heavy metal stabilizer and a preparation method thereof. The coconut fiber composite nanometer iron oxide heavy metal stabilizeris prepared from raw materials like coconut shell, chitosan, sodium carbonate, iron chloride and fly ash. According to the invention, homogeneous purified plant cellulose is obtained through multi-step processes of acid pickling, caustic washing and water washing of the coconut shell, and nanometer iron oxide is synthesized by utilizing a water phase, so adsorption varieties of pollutants are expanded; the efficiency of adsorption to heavy metals is improved; meanwhile, the coconut fiber composite nanometer iron oxide heavy metal stabilizer has good biological compatibility and can be appliedto treatment of heavy metal pollution and organic matter pollution in the environment. The heavy metal stabilizer provided by the invention is environment-friendly, has high adsorption efficiency, andis applicable to application in various environmental treatment projects.

The invention discloses a magnetic sewage treatment agent and a preparation method thereof. The magnetic sewage treatment agent is prepared from 2 to 3 percent of sodium alginate, 32 to 38 percent ofacrylic amide, 11 to 13 percent of acrylic acid, 10 to 15 percent of loaded nanometer TiO2 type fly ash, 3 to 13 percent of cyclodextrin and 14 to 20 percent of functional magnetic particles. The magnetic treatment agent uses sodium alginate and polyacrylamide high polymer materials to coat the fly ash and the magnetic materials in a chemical bonding form; the advantages of flocculating agents, adsorption agents, photocatalysts and magnetic separation technology are combined; the high separation recovery rate is realized and reaches 99 percent; a good clearing effect is achieved on organic contaminants and heavy metal contaminants in sewage; the contents of COD, SS, lead, cadmium, copper, mercury, chromium (VI) and arsenic in the treated riverway sewage reach the specification in NationalStandard For Surface Water Environmental Quality in the People's Republic of China GB3838-2002; the magnetic sewage treatment agent has wide application prospects in the sewage treatment field.

The invention provides a preparation method of high-strength self-compacting concrete. The preparation method comprises the following steps: (1), weighing the following raw materials, by weight: 290-320 parts of cement, 70-85 parts of fly ash, 65-75 parts of silica fume, 650-750 parts of quartz sand, 700-800 parts of gravels, 25-35 parts of glass beads, 12-15 parts of a nano titanium dioxide / basalt stone powder composite material, 1.5-2 parts of redispersible polymer rubber powder, 1-1.2 parts of an epoxy silane coupling agent and 10-15 parts of an additive; and (2), uniformly mixing glass beads, redispersible polymer rubber powder and an epoxy silane coupling agent to obtain a pre-mixture; pouring cement, fly ash, silica fume and the nano titanium dioxide / basalt stone powder composite material into a stirrer, uniformly performing stirring, adding the pre-mixture, water and quartz sand, performing stirring for 120-150 seconds, then adding crushed stone and the additive, continuously performing stirring for 120-150 seconds, and uniformly performing stirring, so as to obtain the self-compacting concrete. The concrete prepared in the invention has the advantages of high strength, goodworking performances and excellent durability.

The invention relates to a stable-type cloth trolley for spinning. The stable-type cloth trolley comprises a horizontally-extending trolley plate, pulleys arranged at the bottom of the trolley plate, and a strip-shaped handle extending upwards from the trolley plate. The stable-type cloth trolley is characterized in that multiple columnar grooves which are transversely arranged parallelly are arranged on the surface of the trolley plate, axes of the columnar grooves are parallel to one another and in the horizontal direction, cross section of the groove wall of each columnar groove is in the shape of a circular arc, and central angle of the circular arc of the cross section of the groove wall of each columnar groove is smaller than 180 degrees. Due to arrangement of the columnar grooves, bearing stability of cloth coils is greatly improved, dropping of the cloth coils in the process of transporting is prevented, the cloth coils are protected, increasing of reloading time due to dropping is avoided, and working efficiency is improved.

The invention discloses a modified zeolite-iron oxide mixed soil in-situ repairing agent and preparation method thereof. The modified zeolite-iron oxide mixed soil in-situ repairing agent is made of zeolite, organic matters, ferric chlorides, coal ashes and other raw materials and mixes with water to form nano-iron oxides, and further mixes with a mixed system of organic matters and zeolite whichare low in price and easy to get on this basis to shape multi-polymers; and interior microcellular structure can be retained to improve absorbability to soil pollutants, through cooperative combination of the interior microcellular structure and the absorbability, specific surface area is greatly increased, pollutant-absorbing species are enlarged, and the absorbing efficiency for heavy metals isimproved. The modified zeolite-iron oxide mixed soil in-situ repairing agent uses raw materials which are rich in reserves and cheap in price, finished products are high in reliability and has a goodgeneralizing potential at home and abroad, and particularly has a wide application prospect to composite type soil pollution of the heavy metals and the organics.

The invention provides a combustion supplementing type waste heat boiler. The combustion supplementing type waste heat boiler can solve the problem that no high-temperature smoke is supplied to upstream equipment of an existing waste heat boiler or high-temperature smoke supply to the upstream equipment of the existing waste heat boiler is not stable, and consequently the heat supply requirement cannot be met. The combustion supplementing type waste heat boiler comprises a boiler barrel and a waste heat boiler flue. The waste heat boiler flue is horizontally arranged. A smoke inlet is formed in one end of the waste heat boiler flue, and a smoke outlet is formed in the other end of the waste heat boiler flue. The smoke inlet is connected with a high-temperature smoke discharge port of the upstream equipment. A heated face assembly is arranged in the waste heat boiler flue in the direction from the smoke inlet to the smoke outlet. The boiler barrel is connected with the heated face assembly through a circulation pipeline. The combustion supplementing type waste heat boiler is characterized by further comprising a combustion supplementing chamber composed of a film type water cooling wall, and the combustion supplementing chamber is provided with a combustion supplementing combustor; and the smoke outlet end of the combustion supplementing chamber communicates with the waste heat boiler flue through an adapter flue, the end, connected with the waste heat boiler flue, of the adapter flue is provided with a first flue gate valve plate, and a second flue gate valve plate is arranged at the smoke inlet position of the waste heat boiler flue.