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439 results about "Leveling effect" patented technology

Leveling effect or solvent leveling refers to the effect of solvent on the properties of acids and bases. The strength of a strong acid is limited ("leveled") by the basicity of the solvent. Similarly the strength of a strong base is leveled by the acidity of the solvent. When a strong acid is dissolved in water, it reacts with it to form hydronium ion (H₃O⁺). An example of this would be the following reaction, where "HA" is the strong acid...

Crosscut production line for metal sheet materials

The invention relates to the technical field of crosscut production equipment for metal sheet materials, in particular to a full set of crosscut production line for the metal sheet materials. The production line comprises an uncoiling unit, a levelling unit, a numerical control cut-to-length unit, a crosscut unit and an overlapping unit. The full set of crosscut production line for the metal sheet materials improves the automatic in uncoiling, levelling, cut-to-length, crosscut, overlapping and the like substantially, and is quick in production speed and high in efficiency; a sixfold levelling mechanism is adopted to perform the leveling on the metal sheet materials, and the leveling effect is good; a numerical control cut-to-length mechanism and a passive correction mechanism are adopted to perform size positioning, so that the cutting precision is improved greatly; and the overlapping unit is adopted, so that the cut metal sheet materials neatly stack up automatically and are favorable for accelerated packaging and transportation. In addition, the invention also designs measures for protecting surfaces of the metal sheet materials at multiple positions, so that the surfaces of the metal sheet materials are not scratched or damaged in the process of cutting.
Owner:东莞市金峥机械有限公司

Closed cycloid precision gear reducer

The invention discloses a closed cycloid precision gear reducer. The closed cycloid precision gear reducer comprises an input part, a pin wheel housing, an output part and a small-tooth-difference inside-gear reducing mechanism. Wheel pins used for being meshed with a cycloidal gear of the small-tooth-difference inside-gear reducing mechanism are arranged on the inner ring of the pin wheel housing in the circumferential direction. The inner ring of the pin wheel housing is provided with containing grooves which correspond to the wheel pins in a one-to-one mode and are used for containing the wheel pins. The wheel pins make double-line contact with the inner walls of the corresponding containing grooves. According to the closed cycloid precision gear reducer, the double-line contact characteristic exists between the wheel pins and the containing grooves in the pin wheel housing; as the wheel pins make double-line contact with the corresponding containing grooves in the tooth width direction, the bending strength is enhanced, and carrying capacity is improved; meanwhile, due to the increase of the number of contact lines, the achievement of the error leveling effect is facilitated, transmission accuracy can be improved, and then the requirements for machining errors and assembly errors can be lowered. Compared with an existing RV gear reducer, the return difference of the closed cycloid precision gear reducer is smaller; besides, the closed cycloid precision gear reducer is compact in structure, long in service life, simple in machining process and low in manufacturing cost.
Owner:CHONGQING UNIV

Wind and solar storage combining power generation system smooth control method based on power generation power curves

The invention discloses a wind and solar storage combining power generation system smooth control method based on power generation power curves. Based on the predication power information of a wind power plant and a photovoltaic power station, a system power prediction curve is subjected to optimization, a system power generation power curve is obtained, according to the total power generation power value in the system power generation power curve, corresponding prediction values in a wind power plant power prediction curve and a photovoltaic power predication curve are processed, a wind power generation power curve, a photovoltaic power generation power curve and an energy storage charging-discharging power curve are obtained, subsystems are controlled to work according to the power curves, and under the premise that an energy storage charging state is kept at a reasonable level, power fluctuation is effectively output through a smooth system. The schedulability of the wind power plant and the photovoltaic power station is fully used, under the premise that fluctuation leveling effect is guaranteed, charging-discharging frequency of energy storage equipment is reduced, and the service life of the energy storage equipment is prolonged.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Production method of tipping base cigarette paper with high natural air permeability

The invention relates to a production method of tipping base paper with high natural air permeability as well as cigarette paper. The production method of the tipping base cigarette paper with the high natural air permeability comprises a pulping step, a papermaking step and a calendaring step; in the pulping step, softwood pulp, eucalyptus pulp and Spain straw pulp are respectively pulped, the softwood pulp has the pulping concentration of 3.4-3.6 percent, the beating degree/ wet weight of 66-680 SR/8-11g, the eucalyptus pulp has the pulping concentration of 3.6-3.8 percent and the beating degree of 20-220 SR, the Spain straw pulp has the beating degree of 18-220 SR; and 40-60 percent of softwood pulp, 30-40 percent of eucalyptus pulp and 10-20 percent of Spain straw pulp which are well-pulped are proportioned. The invention has higher air permeability and obvious action of diluting mainstream smoke, can greatly decrease the production cost and improve the production efficiency without static electricity or laser printing, the favorable combination strength can satisfy the requirement of a high-speed printer, the base paper is smooth and fine, has good oil print leveling effect and is fully suitable for the production requirement of a gravure printing machine.
Owner:MUDANJIANG HENGFENG PAPER CO LTD

Leather stretching and leveling device for leather product production

The invention discloses a leather stretching and leveling device for leather product production and relates to the technical field of leather processing. The leather stretching and leveling device comprises a supporting rack, a leveling table for supporting leather is fixedly mounted on the supporting rack, two clamping mechanisms for clamping leather are symmetrically arranged on two sides of theleveling table, a lead screw I and a lead screw II which are coaxially fixed, opposite in thread rotating direction, are horizontally arranged in the supporting rack, thread bushing blocks in transmission connection to the clamping mechanisms are arranged on the lead screw I and the lead screw II in a threaded connecting sleeving manner, and the lower end of a leaning rod is higher than the bottom surface of a pressure plate. The pressure plate moves downward to compress the leather to the leveling table and the clamping mechanisms are driven by a lifting rack to pull the leather downward, sothat the leather supported by the leveling table is stretched and leveled effectively. A compression roller rolls the leather toward two sides in the process that the pressure plate moves downward, so that the leveling effect of the surface of the leather is improved greatly and the leather leveling efficiency is high.
Owner:温州天炽包装有限公司

Automatic leveling control system of fire-fighting truck working platform, fire-fighting truck and leveling method

ActiveCN103550893AImprove the effect of automatic levelingFire rescueLeveling effectControl system
The invention discloses an automatic leveling control system of a fire-fighting truck working platform, a fire-fighting truck and a leveling method. The automatic leveling control system comprises a control device, a horizontal angle sensor, an angle acceleration sensor and a leveling execution mechanism, wherein the horizontal angle sensor collects the inclination angle of the fire-fighting truck working platform relative to a horizontal plane and sends the inclination angle to the control device; the angle acceleration sensor collects the rotary angle acceleration of a crank arm and sends the rotary angle acceleration to the control device; the control device generates control signals according to the inclination angle of the fire-fighting truck working platform relative to the horizontal plane and the rotary angle acceleration of the crank arm and controls the leveling execution mechanism to finish the leveling operation of the fire-fighting truck working platform. According to the automatic leveling control system, the fire-fighting truck and the leveling method, the feedback of the angle acceleration is introduced, the feedback component of the angle acceleration is utilized for restraining a chattering phenomenon, two different control models are utilized for respectively controlling the automatic leveling of the working platform during lifting and falling processes, and a leveling cut-off region is arranged, so that the automatic leveling effect is enhanced.
Owner:XCMG FIRE FIGHTING SAFETY EQUIP CO LTD

Stored energy power station optimizing control method with power prediction considered

InactiveCN103928938AReduce the number of charge and discharge transitionsGive full play to the characteristics of the mediumAc network load balancingStored energyLeveling effect
The invention discloses a stored energy power station optimizing control method with power prediction considered. The method includes the steps that the control step length of the progressive charge and discharge of a stored energy power station is determined, and a stored energy power station charge and discharge model is built based on the main control strategy and the auxiliary control strategy; a wind power plant stored energy system capacity optimizing target function is built with the optimized operation state of the stored energy power station state of charge (SOC) as the goal, and the charge and discharge power constraint condition and the SOC constraint condition are built; on the condition of meeting the control strategies of the stored energy power station charge and discharge model, solving and computing are conducted on the stored energy system capacity optimizing target function through the PSO algorithm, and the optimized charge and discharge power of the stored energy power station is acquired. The stored energy power station optimizing control method with power prediction considered has the advantages that the charge and discharge converting times of LiB can be reduced effectively on the premise of guaranteeing the operation state of SOC and the leveling effect of all media, the medium features of VRB can be fully played, and the control method is highly efficient and reliable, and certain theoretical value and actual application value are achieved.
Owner:STATE GRID CORP OF CHINA +2

Two-dimensional optical phased array

The invention discloses a two-dimensional optical phased array. The two-dimensional optical phased array can be applied to multiple technical fields, such as laser radar, biomedical imaging, holographic imaging and ultra-high data rate communication. Array elements of the two-dimensional optical phased array are a set of point light sources with the same frequency, the phased array takes one of the array elements as the center of the circle, and the other array elements are evenly divided into a plurality of groups; each group of array elements and the center of the circle form a radial linear array, and the linear arrays have the same structures and are distributed at equiangular intervals in the circumferential direction. The structure of the two-dimensional optical phased array has the characteristics of a circular shape, equiangular intervals, high symmetry, compact spatial distribution of the array elements and the like, and therefore, the two-dimensional optical phased array has the advantages of low in processing difficulty, strong in inhibitive capability of grating lobes, large in two-dimensional scanning range and the like; besides, based on a non-uniform array element distribution grating lobe inhibiting technique, the phases of the array elements of the phased array are controlled so as to achieve beam formation and imaging, and the grating lobes and a multi-level effect can be effectively inhibited; in addition, single beam formation is achieved, and meanwhile the beam scanning resolution is high.
Owner:NANJING UNIV OF AERONAUTICS & ASTRONAUTICS

Heavy-duty isothermal forging hydraulic press

The invention relates to a heavy-duty isothermal forging hydraulic press, which comprises an upper transverse beam, a lower transverse beam, upright posts, a main cylinder, side cylinders and a slide block, wherein an upper baseplate is fixed on the lower plane of the slide block; and a movable workbench is arranged on the lower transverse beam. The heavy-duty isothermal forging hydraulic press is characterized in that the upper transverse beam and the lower transverse beam form a combined beam body structure; leveling cylinders are fixed on the four corners of the upper end of the upper transverse beam and the upper end of the lower transverse beam; each leveling cylinder is provided with an independent leveling control system; an upper knock-out device is arranged on the slide block; movable workbench positioning mechanisms are arranged on the lower part of the movable workbench body and in the lower transverse beam; and the movable workbench body is further provided with a movable workbench clamping device. The heavy-duty isothermal forging hydraulic press is characterized in that a combined transverse beam is light in weight and is convenient to transport and produce, and the manufacturing cost can be reduced; a leveling effect is achieved via the leveling cylinders, the leveling response time is shortened, and energy is saved greatly; through the upper knock-out device, successful demolding of workpieces can be realized, and the workpiece forging and pressing quality is ensured; and accurate positioning and stable running of a press workbench can be realized, and the production requirement of forging equipment for heavy-duty aviation forgings is met.
Owner:TIANJIN TIANDUAN PRESS CO LTD

Ground leveling vehicle for municipal construction

The invention discloses a ground leveling vehicle for municipal construction. The ground leveling vehicle comprises a vehicle body. An upper limit plate and a lower limit plate are fixedly horizontally installed in the vehicle body. A water collection sleeve and a water tank communicating with the water collection sleeve are fixedly vertically installed on the vehicle body. A check valve II is installed on a water inlet tube. Lower connecting rods are fixedly installed on the lower sides of shaft sleeves. Push rods are hinged to the lower ends of the lower connecting rods. Stamping boards arehorizontally fixedly installed at the lower ends of the push rods. The side wall of the vehicle body is horizontally rotationally provided with a driving shaft. Walking wheels are sleeved and fixed onthe surface of the driving shaft. According to the invention, when a vehicle body walks, a crankshaft is driven to rotate to realize the upward and downward reciprocating motion of the stamping boards, thereby achieving repeated stamping on the ground, the ground leveling effect is good, the leveling area is easy to adjust, a piston head reciprocates in the water collection sleeve, so that waterspray discs intermittently spray water, the effects of dust reduction and dust removal are achieved, and a wide range of dust spread in the ground leveling process is avoided.
Owner:李翠仙
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