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84results about How to "Change space" patented technology

Aza cyclic carbine rear earth catalyst for crystallinity 3,4-polyisoprene

The present invention relates to a nitrogen heterocyclic carbene rare earth complex, a catalyst system which consists of the present invention, aluminum alkyl and an organoboron salt can catalyse the isoprene to carry out the solution polymerization, so as to prepare the polyisoprene with the crystallization property, high 3, 4-structure and high glass transition temperature (Tg). The molar ratio of aluminum alkyl and the rare earth complex is within the scope of 1 to 100, the molar ratio of the organoboron salt and the rare earth complex is within the scope of 0.5 to 2.0; the solvent which is used for polymerization can be toluene, bromobenzene, n-hexane, dichloromethane or chlorobenzene; the polymerization temperature range is -20 DEG C to 80 DEG C, the reaction time of polymerization at minus 20 DEG C is 36 hours, the reaction time of polymerization at 80 DEG C is 1 hour, and the monomer conversion rate can be up to 100 percent. The reaction is characterized by active polymerization, the molecular weight of the product can be controlled by the molar ratio of the monomer and the catalyst, the molecular weight of the polyisoprene can achieve 360,000 at most, and the glass transition temperature Tg is equal to 5 DEG C to 50 DEG C. The content of the 3, 4 structure of the polyisoprene is affected by the spatial effect and the electronic effect of the rare earth complex, the solvent type for polymerization reaction and the polymerization reaction temperature and so on, which is changed between 76 percent and 99 percent.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Storage rack for auto parts

The invention discloses a storage rack for auto parts, belonging to the field of storage of auto production parts. The storage rack comprises an outer frame, inner frame boards arranged in the outer frame and a top frame arranged on the top end of the outer frame, wherein L-shaped reinforcing plates are obliquely arranged on vertical frames of the outer frame; multiple fixing pin holes are formed in the vertical frames of the outer frame; the inner frame boards are fixedly arranged on the vertical frames of the outer frame through fixing pins; screw holes are uniformly distributed in the frame board of the top frame; cylindrical partition posts are arranged in the screw holes; only the ends, which are arranged in the screw holes, of the partition posts are provided with screw threads; and the partition posts are fastened through bolts. The storage rack has the advantages that the inner frame boards can be moved to different positions to be fixedly arranged; the spaces for storing the parts can be changed, so that the storage rack is suitable for storing the parts of different sizes; and the space on the top end of the storage rack for the parts is fully utilized due to the arrangement of the partition posts, so that the utilization rate of the storage rack for the parts is improved, and the situation that excessive production field is occupied is avoided.
Owner:CHUZHOU DASHI AUTO PARTS

Asymmetric alpha-diimine nickel catalysts as well as preparation method and application thereof

The invention relates to asymmetric alpha-diimine nickel catalysts as well as a preparation method and application thereof, and belongs to the technical field of catalysts. On the basis of ensuring the thermal stability of the catalysts and the catalytic performance of the catalysts capable of obtaining a polymer with a high molecular weight through catslysis, the catalysts solve the technical problem of a low degree of branching of a polymer obtained by catalyst-catalyzed ethylene polymerization in the prior art. The asymmetric alpha-diimine nickel catalysts have a structural formula represented by a formula (I) shown in the specification, on one hand, the catalysts adopt large steric hindrance skeletons of 2,6-bis(diphenylmethyl)phenyl and derivatives of the 2,6-bis(diphenylmethyl)phenylwhich can rotate freely, the electronic and steric effects of the large steric hindrance are changed, on the other hand, the catalysts adopt skeletons of pentiptycene and derivatives of the pentiptycene which can limit geometric rotation, and the electronic and steric effects of the pentiptycene are changed, so that the target that the polymer with the high molecular weight and a branching degreecapable of being regulated and controlled in a large scale is obtained at high temperature can be realized.
Owner:CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI

Method for recycling naproxen resolution solvent, resolving agent and by-product by overgravitational field

The invention discloses a method for recycling naproxen resolution solvent, resolving agent and by-product by the overgravitational field. A solution containing a resolution solvent, a resolving agent such as N-n-octylglucamine, and by-product such as L-naproxen and L-naproxen N-n-octylglucamine salt after the separation of D- naproxen N-n-octylglucamine salt is firstly added in a overgravitational revolving bed for recycling resolution solvent, then the residual solution is diluted by water, the pH value is adjusted to 7 to 12, the resolving agent is recycled, the mother liquor is concentrated, the alkali C is added, the D,L- naproxen salt is obtained by the racemization reaction. The method adopts the overgravitational revolving bed to recycle the resolution solvent, the process is simple, the whole process is safe, steady and reliable, the operation and the maintenance are simple, the runing cost is greatly reduced, at the same time the production efficiency is improved; the obtained methanol is uniform, the recovery rate of the resolving agent and the D,L- naproxen salt is high, the obtained resolution solvent, resolving agent and D,L- naproxen salt can be directly reused, thus being resource-saving and having obvious environment benefit and social benefit.
Owner:ZHEJIANG CHARIOTEER PHARMA

Construction method of adjustable capping beam formwork

The invention discloses a construction method of an adjustable capping beam formwork. The construction method includes the steps of 1, adjusting width of a capping beam bottom form, to be specific, designing the left and right ends respectively as moving portions on the same side of the capping beam bottom form and fixed portions on the same side of the capping beam bottom form, moving the movingportions on the same side, forming gaps between the moving portions and the fixed portions, filling the gaps with insert plates, and adaptively adjusting the width of a grouting sleeve positioning mechanism according to the adjusted widths of the left and right ends; 2, adjusting the height of capping beam side forms, to be specific, adjusting the height of the capping beam side forms through height adjusting mechanisms arranged at the lower portions of the capping beam side forms to assemble different types of capping beam side forms; 3, adjusting the position of capping beam end forms, to bespecific, setting the capping beam end forms at the two ends of the capping beam bottom form through adjusting devices, and adjusting the actual service height of the capping beam end forms and actual length of the capping beam bottom form through vertical and side-to-side movements of the adjusting mechanisms, so that casting of different types of capping beam formworks is satisfied.
Owner:SHANGHAI CONSTR BUILDING MATERIALS TECH GRP CO LTD

Box body structure with intelligent storing and taking function

The invention relates to a box body structure with an intelligent storing and taking function. An upper cover plate, three side plates which are arranged on the two sides and the back side, and a bottom plate are correspondingly connected to form a box body of which the opening is outward and the interior is hollow; a middle sealing plate is vertically arranged on the middle part of the plane where the opening position of the box body is arranged; middle clapboards vertical to the middle sealing plate are vertically arranged in the direction of the planes where the two side walls of the middle sealing plate are arranged respectively; the middle clapboards, the two side plates on the corresponding sides and the side plate on the back side respectively form two storing spaces; a plurality of clapboard supports are correspondingly arranged on the two inner side walls of each storing space; every two corresponding clapboard supports are matched with corresponding clapboards; the clapboards divide the storing spaces into a plurality of storing cabinets with cabinet doors. According to the box body structure, by adjusting the positions of the clapboard supports, the space of each storing cabinet is changed, and the requirement of express delivery parcels with different sizes is met; the cabinet doors of the storing cabinets are controlled by electromagnetic locks to be opened and closed, so that the operation is safer and more convenient.
Owner:NINGBO BENFU MACHINERY

Single-face double-point welding process for automobile

The invention aims at providing a single-face double-point welding process for an automobile. The process is characterized in that the process involves a special welding machine, automobile welding special clamps, a transformer, single-face double-point welding tongs, single-face double-point welding mechanisms, a gantry steel structure, gantry sliding-out mechanisms, gantry bases, a welding tong welding plane moving structure, upper electrodes, lower electrode islands, conductive bridges and locating connection parts; the transformer and the single-face double-point welding tongs are carried on the special welding machine, single-side double-electrode welding is adopted by the special welding machine, and the transformer is mounted on the top of the special welding machine. The process has the beneficial effects that full manual operation for welding can be achieved, only two workers are needed, and large heavy welding tongs are not used; the welding tongs are fixed to the special welding machine and are light, easy to operate and good in welding effect; on the basis that the functional requirement is met, the investment cost is lowered to a great extent, the operation difficulty of the workers is lowered, and the stability and multi-vehicle-type adapting capacity of equipment are greatly improved.
Owner:天津七所高科技有限公司

Rear suspension system of automobile longitudinal power assembly

The invention discloses a rear suspension system of an automobile longitudinal power assembly, which comprises an upper bracket, a lower bracket and an elastic element, wherein the upper bracket and the lower bracket are arranged on a lower beam of the transmission case and obliquely extend upwards from both sides of the transmission case; and the elastic element is arranged between the upper bracket and the lower bracket arranged on both sides of the transmission case. On the premise of not changing the prior automobile power assembly and the vertical space relationship of the transmission case beam, the cushion room is increased and the action center of the elastic element is changed. The upper and lower brackets obliquely extend upwards from both sides of the transmission case, and the elastic element is arranged between the upper and lower brackets on both sides of the transmission case, so that the upward and downward arrangement of the elastic element is not restricted by the transmission case and the volume and amount of compression of the elastic element can be obviously increased as compared with those in the original design. Meanwhile, since the space permits, the elastic element and the horizontal surface can form an included angle, thereby optimizing the arrangement of the suspension system.
Owner:郑州日产汽车有限公司

P-phenyl substituted alpha-diimine palladium catalyst and preparation method thereof

The invention discloses a p-phenyl substituted alpha-diimine palladium catalyst and a preparation method thereof. The preparation method comprises the following steps: adding a p-phenyl substituted aniline derivative and 2,3-butanedione into a dry flask, carrying out a reflux reaction by taking absolute methanol as a solvent and formic acid as a catalyst to obtain a precipitate, recrystallizing the obtained crude product through a mixed solvent, carrying out filtering, carrying out washing with cold ethanol, and carrying out vacuum drying to obtain a p-phenyl substituted alpha-diimine ligand;and under protection of N2, mixing the p-phenyl substituted alpha-diimine ligand with PdCl2(MeCN)2, adding CH2Cl2, carrying out stirring for reacting, filtering the mixed solution, removing the solvent of the obtained liquid by rotary evaporation, washing the obtained solid with diethyl ether, and finally carrying out vacuum drying to obtain the catalyst. The catalyst disclosed by the invention isapplied to an alpha-olefin polymerization reaction, and polyalpha-olefin (PAO) lubricating oil base oil obtained through a polymer has the advantages of low pour point, high viscosity index and the like, so that the use effect of PAO lubricating oil is greatly improved, and use requirements on the market are met.
Owner:JIANGSU ZHONGSHENG GAOKE ENVIRONMENTAL CO LTD

Organic vegetable planting device

The invention relates to the field of vegetable planting, in particular to an organic vegetable planting device. The organic vegetable planting device comprises a main frame mechanism, a transmissionmechanism, an air pump, a plurality of branch frame mechanisms, seed box mechanisms, sowing mechanisms, seed grain carrying mechanisms, seed grain adjusting mechanisms, stirring mechanisms and axis mechanisms. The multiple branch frame mechanisms are all fixedly connected with the main frame structure; the seed box mechanisms are fixedly connected to all the multiple branch frame mechanisms; the sowing mechanisms are rotationally connected into the multiple seed box mechanisms; the multiple seed grain carrying mechanisms are slidably connected into each sowing mechanism; the seed grain adjusting mechanisms are rotationally connected to the multiple sowing mechanisms, and each seed grain adjusting mechanism is slidably connected with the multiple seed grain carrying mechanisms; the stirringmechanisms are rotationally connected in the plurality of seed box mechanisms; and a plurality of axis mechanisms are arranged, and the plurality of axis mechanisms are rotationally connected in thesowing mechanism respectively, so that seeds can be greatly prevented from rolling after falling to the ground, and good growth of vegetables is facilitated.
Owner:建始县慧民农业科技有限公司

Efficient automobile fuel high-pressure pump

The invention discloses an efficient automobile fuel high-pressure pump. The efficient automobile fuel high-pressure pump comprises a conveying adjusting oil tank, a filter box, a transmission box andan oil conveying channel, oil inlets are formed in the two ends of one side of the bottom of the transmission box, the oil conveying channel is formed in one side of the transmission box, a driving gear and a driven gear are arranged on one side of the transmission box, the filter box is installed at the top of the transmission box, the conveying adjusting oil tank is mounted at the top of the filter tank, and an oil conveying opening is formed in the top of the conveying adjusting oil tank. The automobile fuel high-pressure pump is simple in structure, the automatic gasoline conveying process can be completed only through cooperation of a first worm, a second worm, a third worm and a fourth worm, and the automobile fuel high-pressure pump has the advantages of being low in manufacturingcost and high in conveying efficiency; a filter plate is mounted in the filter box, so that the situation that impurities block an oil supply pipe and an automobile oil nozzle, and consequently an automobile breaks down is avoided; and a piston plate moves in an inner cavity of the conveying adjusting oil tank, the speed of gasoline output from the oil conveying opening is changed, and the gasoline output amount becomes controllable.
Owner:安徽高坚机械科技有限公司

Physiological helmet

The invention discloses a physiological helmet. The physiological helmet comprises an outer shell, an inner fixing mechanism and an adjusting mechanism, wherein the adjusting mechanism comprises a plurality of electric push rods, a controller, a battery, a switch and a plurality of pressure sensors; the inner fixing mechanism comprises an inner shell and a buffer pad arranged on the inner side ofthe inner shell, and the inner shell is arranged on the inner side of the outer shell; the fixed end of the electric push rod is connected with the inner side of the outer shell, and the movable end of the electric push rod is connected with the outer side of the inner shell; the controller is arranged on the inner side of the outer shell; the switch is arranged on the outer side of the outer shell; the pressure sensors are arranged on the buffer pad; and the electric push rod and the pressure sensors are electrically connected with the controller. The battery supplies electricity for the electric push rod, the controller and the pressure sensors. The switch is used for controlling the battery to supply electricity. The positions of the inner shell and the buffer pad can be adjusted, and the internal space of the helmet can be gradually changed according to physiological changes of children.
Owner:XIN HUA HOSPITAL AFFILIATED TO SHANGHAI JIAO TONG UNIV SCHOOL OF MEDICINE

Nectarine planting greenhouse capable of conveniently adjusting sunlight irradiation

InactiveCN109964701ATo achieve the purpose of protectionThe beneficial effect achieved is: the invention can achieve the purpose of protection by placing the arc-shaped support frame on the auxiliary of the hydraulic columnClimate change adaptationGreenhouse cultivationGreenhouseEngineering
The invention discloses a nectarine planting greenhouse capable of conveniently adjusting sunlight irradiation. The greenhouse comprises a transparent plastic shell, pull rods, a stretching plastic film, an arc-shaped supporting frame, buckles, sprinkling irrigation components, first telescopic rods, inserting cylinders, a stretching spring, a swinging rod and a servo motor. The arc-shaped supporting frame can ascend and descend with the assistance of a hydraulic column so that the space of the greenhouse can be changed with the growth of nectarines, growth requirements of nectarine trees canbe met, and mass pruning is avoided; a semi-transparent shading cloth or non-transparent shading cloth with a covering function is arranged outside the transparent plastic shell, so that the irradiation intensity of sunlight on the nectarine trees is changed, and a comfortable illumination environment can be better provided for the nectarine trees; an exhaust pipe and a drainage pipe are pre-arranged on a foundation, and sprinkling irrigation and exhaust of the nectarine trees can be realized by sliding vertical rods easily and conveniently without pulling pipes, and the nectarine trees are protected.
Owner:盐城紫燕农业科技有限公司

Plate rolling machine capable of machining bent pipe

The invention discloses a plate rolling machine capable of bending pipes, which comprises a tilting frame and a base which are vertically arranged up and down, lower rollers are arranged on the left and right ends of the base, and the junction of the tipping frame and the base runs through There is an upper roller, the upper roller is located in the middle above the two lower rollers, the end of the upper roller is connected with the upper roller positioning shaft, the upper roller positioning shaft is threaded with a pinch wheel, and the outer end of the pinch wheel is adjusted by the upper roller The nut is fixed on the positioning shaft of the upper roller, the positioning shaft of the lower roller is set inside the ends of the two lower rollers, and the supporting wheels are sleeved on the positioning shafts of the two lower rollers, and the outer ends of the two supporting wheels are connected to the limit of the lower roller. The hex nut is fixed on the lower roller positioning shaft. The pressing wheel and supporting wheel of the present invention are tightened and fixed by the upper roller adjusting nut and the lower roller limit hexagonal nut, which is convenient for loading and unloading; the upper roller and the lower roller adopt pressing wheels and supporting wheels of different diameters to change the The space through which the tube blanks to be processed passes through is suitable for bending tube blanks of different specifications at different angles.
Owner:宝鸡欧亚金属科技有限公司

Adjustable resonance chamber for musical instrument

InactiveCN103137107AChange toneChange sound qualityStringed musical instrumentsEngineeringIdler-wheel
The invention provides an adjustable resonance chamber for a musical instrument, and relates to a component used for amplifying sound in the musical instrument. The resonance chamber comprises a top plate, a bottom plate, side plates, a spring clamp, magnets, a movable partition board and a tone tuning module. The top plate, the bottom plate and the side plates are connected together through the magnets to constitute a chamber body. The bottom plate is sleeved within a space between the side plates and can slide up and down to change an internal space of the chamber body. A long hole is formed in the top plate, and the magnets are arranged on the half front portion of the top plate. The movable partition board is arranged between the top plate and the bottom plate, a handle is arranged on the movable partition board and penetrates out from the long hole in the top plate, the movable partition board is composed of two boards, upper sides of the two boards are connected by hinges to form a herringbone shape, the handle is arranged at the top end of the movable partition board, the top of the movable partition board is further provided with the spring clamp, and bottom edges of the two boards are provided with idler wheels. The tone tuning module is arranged on the lower portion of the front of the top plate and is a wedge-shaped solid-core plate, wherein a fracture surface of the wedge-shaped solid-core plate gradually thickens. By means of changes of the thickness of the tone tuning module and moving of the partition board and the bottom plate, the resonance chamber can conveniently and flexibly change timbres and tones.
Owner:张树岩
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