43 results about "Wind stress" patented technology

The invention discloses a triangular warning board. The triangular warning board comprises three board bodies which are connected with one another and define a triangle, a reflecting coating is arranged on each board body, connecting blocks are arranged in all positions where the board bodies are connected, rotating structures are arranged between two ends of each board body and the connecting blocks, the rotating structures at the two ends of the same board body are coaxial, the connecting blocks are connected with support bars, and fixing blocks are connected below the support bars. After the triangular warning board in the structure is blown by the wind, the board bodies forming the triangular warning board can rotate, and the stressed area of the triangular warning board is reduced through rotation, so that the wind stress on the triangular warning board is reduced, and the possibility that the triangular warning board is broken by the wind is decreased.

An inner stator of a motor comprises a plurality of iron core stamped sheets which are mutually pressed and superimposed, and take on round shapes. The inner stator is characterized in that the iron core stamped sheets are formed by winding straight line type banded stamped sheets and turning excircle, and comprise a plurality of unit tooth blocks which are connected with each other; wherein, the adjacent two unit tooth blocks are connected with each other by a connecting part, and the inner edge of which is provided with a notch which can reduce the winding stress; each of the unit tooth blocks comprises a tooth crown, a tooth body and a tooth root, a winding groove which is provided with an opening at the position of the tooth root and is communicated with the notch is arranged between every two adjacent unit tooth blocks, the tooth roots of the adjacent unit tooth blocks are abut against each other after the banded stamped sheets are wound and molded, and the winding groove forms a closed slotted hole, through which a coil can pass. Compared with the prior art, the invention improves the utilization rate of the blanking material and winding efficiency, and reduces the difficulty for designing the winding groove; as the molded iron core winding groove is closed, the tooth space torque can be eliminated, and the vibration and noise caused by overlarge torque pulsation of the motor can be avoided. The invention discloses the inner stator of the motor and a manufacturing method thereof.

The present invention belongs to the technical field of optic fiber gyroscopes, and in particular relates to a preparation method of an optic fiber sensing ring capable of releasing internal winding stress force. The method comprises: filling a half cylinder into the concave groove on the outer circumference of the ring skeleton; adopting winding tool equipment to fix the ring skeleton, wherein the hole opening portion of the winding tool equipment and the concave groove of the ring skeleton are arranged in a staggered form; carrying out a dehumidifying treatment on the polarization maintaining optical fiber and the ring skeleton; adopting a quadrupole symmetry method to closely wind the polarization maintaining optical fiber on the ring skeleton in a side-by-side manner so as to form the optic fiber ring; curing the optic fiber ring, and under the semi-solidification state, pulling out the half cylinder; carrying out secondary curing on the optic fiber ring; and disassembling the winding tool equipment to complete the production of the optic fiber sensing ring. According to the present invention, the adverse effects of the winding stress force on the gyroscope performance are eliminated, and the work stability and the precision of the gyroscope under the temperature change environment are improved.

The invention discloses a square lithium battery lamination machine and a lamination technology used for solving the problem of a poor lamination effect in the prior art. The square lithium battery lamination machine comprises a first diaphragm release mechanism, a first positive plate release part, a second diaphragm release mechanism, a first negative plate release part, a third diaphragm release mechanism, a positive plate heat sealing part, a folding part, a second negative plate release part, a second positive plate release part and an arrangement part which are sequentially arranged from an initializing end to a terminating end, wherein main plates of positive plates and negative plates superpose and electrode parts do not superpose, and the positive plates and the negative plates are fixed between three diaphragms and discontinuously and uniformly distributed to form a diaphragm strip; and a laminated sheet is finally formed through folding. By adopting a Z-shaped folding mode, the winding stress is avoided, the product uniformity is good, an assembly operation mode is better in uniformity than a traditional lamination mode, and by adopting double-layer heat sealing, the efficiency is high.

The invention relates to the technical field of wire winding and discloses an automatic cable twisting and winding production line which comprises a driving paying out machine, wherein an untwisting paying out machine, a cable collecting device, a material coating device, a belt storage device and a winding machine are sequentially arranged at the output end of the driving paying out machine; the driving paying out machine and the untwisting paying out machine unwind cable, the cable penetrates through the cable collecting device to form a cable harness, the winding machine rotates to twist, wind and form the cable harness, the twisted and winded cable harness penetrate through the material coating device, the material coating device coats the twisted and winded cable harness, and the finished cable enters the winding machine to be taken up; and the untwisting paying out machine unwinds the cable and rotates a paying out shaft for storing the cable to release twisting and winding stress transmitted by the winding machine through the cable. The automatic cable twisting and winding production line prevents the finished cable from the bump phenomenon due to stress accumulation, the cable is high in quality, and the advantage of manual work saving; and an accurate pitch control method, provided by the invention, can ensure that output of the twisting and winding stress is more stable and can manufacture the cable with high precision requirement for pitch.

The invention discloses a winding stress assessment method based on a three-dimensional electromagnetic coupling model of a transformer. The method is characterized by comprising: establishing the three-dimensional electromagnetic coupling model of the transformer and solving the model; calculating a leakage magnetic field of the transformer based on a vector magnetic potential node finite element method; and by simulating magnetic field distribution in the transformer, performing calculation and analysis on a stress on a winding. After the winding deforms, a geometric structure of the winding is no longer regular and a magnetic structure coupling model programmed by utilizing a current loading principle is not applicable, so a winding stress value is calculated from a two-dimensional model corresponding to a three-dimensional model and then the stress value is loaded into the corresponding three-dimensional model through a related program to calculate the stress on the winding. The deformation of the winding is reflected through a difference of the sunken degrees of the winding between two supporting strips, so that the conditions of stresses on the model in different accumulation situations are observed. The method provides a basis for judging the structural stability of the winding of the transformer, and has the advantages of being scientific, reasonable, real, effective, high in practical value and the like.

The invention discloses a terminal electric tape automatic winding apparatus, and belongs to the field of engineering daily tools. A handheld base frame is connected with a sliding rail, a controlleris installed on the handheld base frame, and a friction wheel is installed on a motor. A rotating ring is arranged in the sliding rail, and an insulating tape roll is fixed on an anti-slip ball. A fixed screw rod is installed on the two sides of a damping wheel, an anti-skid ball is arranged at one end of the fixed screw rod, a damping shaft is installed below one end of a third support, and an electromagnet is installed above a second support. The friction wheel is driven to rotate through rotation of the motor, so that the friction wheel drives the rotating ring to rotate, and the process ofmanual winding of workers is replaced. Damping rotation is carried out through the damping wheel and the damping shaft, so that the insulation adhesive tape wound on the wire core is ensured to havethe same elastic deformation degree, and the winding stress of the adhesive tape is uniform. The work of workers is replaced, and the winding quality and efficiency of the adhesive tape are improved.

The invention relates to a joined wing structure-form wind load measurement method. The method is characterized in that a joined wing structure wing load measurement strain meter arrangement and loadcalibration experiment process is formulated according to joined wing structure-form wind stress characteristics, coupled loads at joined wind structure wing connections are identified, and wind loadmodeling influences caused by connection forms are eliminated, so as to form a joined wing structure form-oriented wind load measurement method. According to the method, influences, on wing measurement load profile strain bridge strain output, of coupled loads caused by the joined wing structure form can be eliminated, so that precision of a joined wing structure-form wing load equation is improved, flight loads of joined wing structure-form wings can be correctly measured, and reliability of flight load measurement results can be improved.

The invention provides a simultaneous calibration method for multiple ocean model parameters, which comprises the following steps: constructing a ground wave radar observation system, and obtaining surface flow field observation data; Acquiring seawater stratification and water depth of the research sea area, and deriving a flow field with average depth from a surface flow field; Constructing a two-dimensional positive pressure ocean accompanying assimilation model considering wind stress and sea surface air pressure under a spherical coordinate system; Giving an empirical formula of the windstress drag coefficient and the bottom friction coefficient in the two-dimensional positive pressure ocean accompanying assimilation model, and giving an empirical coefficient adjustment strategy in the empirical formula; Based on a two-dimensional positive pressure ocean accompanying assimilation model, assimilating flow field data with average depth, and meanwhile, carrying out optimization adjustment on the wind stress drag coefficient and an empirical coefficient in a bottom friction coefficient empirical formula, so that simultaneous calibration of the wind stress drag coefficient and thebottom friction coefficient is realized. According to the method, the model parameters are ensured to have certain physical significance, and a plurality of model parameters are efficiently determined at the same time.

The invention discloses a typhoon center positioning method based on wind stress disturbance, and relates to the technical field of ocean remote sensing. The method comprises the following steps: selecting a remote sensing image waveband as typhoon center positioning input data; selecting and generating sea-land mask data with corresponding resolution; calculating gradients of the infrared image along the longitude direction and the latitude direction respectively; calculating a sea surface wind field disturbance factor; taking the maximum disturbance factor position of the sea surface wind field as a circle center, taking a set threshold value as a radius, and determining the minimum disturbance factor position in the range as the typhoon center position. Aiming at the problem of sea surface typhoon center positioning, the invention provides a sea surface typhoon center positioning method based on a wind stress disturbance theory, and the position of a typhoon center can be determinedby utilizing a far infrared remote sensing image and combining with the approximate position of a forecast typhoon.

The present invention relates to a caterpillar track wheel with division of work between track and chain, methods for fitting unit track with flexible chain ring, methods for buffering prestress, and an open-dose type axle housing. Since a structure that each unit track is separated from a flexible chain ring is adopted, the thickness of the unit tracks does not influence the winding stress of the flexible chain ring and the unit tracks without thickness limitation can effectively disperse stress from the ground to more supporting wheels. Since the thinner flexible chain ring is only responsible for serially connecting the unit tracks and transmitting power, the winding stress and the tension change are reduced.

The invention belongs to the field of stress control of a PCCP (Prestressed Concrete Cylinder Pipe) winder and particularly relates to a steelwire winder stress fluctuation control method. Two stress fluctuation controllers are arranged between a stress wheel and a guide wheel of the steelwire winder to adjust and control the winding stress twice. The invention also relates to a stress fluctuation control device employing the method. The device comprises two stress fluctuation controllers which are sequentially arranged between the stress wheel and the guide wheel of the steelwire winder, a shock-absorbing guide wheel is arranged between the two controllers, and the second stress fluctuation controller is provided with a tension sensor. According to the invention, unstable stress of the traditional steelwire winder is overcome, stress fluctuation amplitude is reduced, product quality is ensured, and steelwire winding speed and winding efficiency are improved.

A paint dipping device for windings of a power transformer consists of an upper pressing plate, a lower pressing plate and three pull screws, wherein three groups of round paint spilling holes and square paint spilling holes are formed on the upper pressing plate, as well as the lower pressing plate. The paint dipping device overcomes the shortcoming that a traditional single or single group of winding has to be fixed by a steel plate for paint dipping and vacuum drying, has a reasonable structure, is uniform in winding stress and good in paint dipping effect and can complete paint dipping ofthree windings of one power transformer at one time. By adopting the paint dipping device provided by the invention, a plurality of windings can be subjected to vacuum drying in each tank, so that the electricity-saving and insulating paint utilization effects are remarkable, the operating efficiency is high and the cost is lowered.

The invention discloses a charged winding stress release device which resolves the problems that an engine works abnormally or even shuts down when the charging is subjected to winding stress in the winding process. The charged winding stress release device is composed of a mould core, a front check ring, a rear check ring, a front clamping groove, a rear clamping groove, a front positioning ring, a rear positioning ring and throat hoops, wherein the front positioning ring and the rear positioning ring are arranged in the front clamping groove and the rear clamping groove respectively to form two independent positioning tools and hooped tightly through the throat hoops, the front and rear positioning tools are arranged at the two ends of the charging respectively, and the mould core is inserted and positioned through the front and rear check rings. The charged winding stress release device is suitable for releasing the stress generated in the charged winding process of a screwing star hole.

The invention relates to the technical field of artificial plants and particularly relates to a simulated movable comb-shaped branch/leaf skeleton and a manufacturing method thereof. The branch/leaf skeleton comprises a branch rod and a plurality of leaf rods, wherein the branch rod comprises a plurality of round spring steel bars, the numbers of the spring steel bars are gradually increased in the direction from the tail to the root of the branch rod, a plurality of steel wire hoops are bound outside the spring steel bars, and the steel wire hoops are distributed in sequence with a certain distance in the direction from the tail to the root of the branch rod. The branch rod is formed by binding the round spring steel bars, has a good elastic deformation property, can automatically recover after deformation, can swing along with wind under the wind action, has simulation and movable effects, can effectively eliminate wind stress fatigue, and has strong resistance to plastic deformation. Besides, the numbers of the spring steel bars are gradually increased from the tail to the root of the branch rod according to different loads on individual parts of the branch rod, so that the mechanical strengths of the branch rod are gradually increased from the tail to the root of the branch rod and the load-carrying capacity and the wind resistance are enhanced, as a result, the outdoor service life of the branch/leaf skeleton is greatly increased.

The invention relates to an automatic-winding-device-based rotary transformer winding method. According to the technical scheme of the method, an insulation treatment manner of electrostatic coating on an iron core is carried out for replacing the insulation treatment manner of padding 6050 polyimide films and pasting 3240 epoxy glass fiber end pieces on the conventional iron core; research and smooth clamping of the rotary transformer iron core are realized according to the difference of winding manners and slot fullness rates, the parameters of winding span and winding tension are adjusted, and an automatic winding program is set and programmed to finish winding automatically; winding parameters and programs are optimized according to the rotary transformer test data after winding to wind qualified products. By virtue of the automatic-winding-device-based rotary transformer winding method, the rotary transformer processing period is shortened; meanwhile, the machine winding stress is uniform; the consistency is good; the survival rate of the rotary transformer is increased.

The invention discloses a wind stress coefficient expression method and system comprehensively considering wind speed, blowing range and water depth influences, and belongs to the field of wind-wave-flow numerical simulation research. The method is based on a wind-wave-flow coupling action mechanism of water areas such as lakes and oceans. Two dimensionless numbers, namely a blowing range Froude number and a blowing range Reynolds number, capable of representing wind-wave-flow action intensity are constructed, a wind stress coefficient expression form containing an undetermined coefficient isestablished, then the undetermined coefficient is obtained by adopting a nonlinear regression method in combination with experiment and actual measurement data, and a final wind stress coefficient expression is obtained. According to the method, the defect that a traditional wind stress coefficient expression only considers the influence of a single wind speed factor is overcome, the limitation that the traditional wind stress coefficient expression is difficult to adapt to lake numerical simulation is broken through, and a Taihu lake water level verification result shows that the constructedwind stress coefficient expression has good rationality and great superiority. The method can be widely popularized in the field of wind-wave-flow numerical simulation research of water areas such aslakes and oceans.

The invention provides a well drilling exploration guide rope which comprises a rope core and a guide rope protection layer wrapping the rope core. A lubricating material is coated between the rope core and the guide rope protection layer. Compared with the prior art, the well drilling exploration guide rope has the advantages that the outer layer guide rope protection layer is made of austenitic stainless steel, Vaseline is filled between the guide rope protection layer and the rope core, the rope core is not prone to being broken by winding stress in a guide rope winding process when the submergence depth of the exploration guide rope increases, and the service life of the guide rope is prolonged.

The invention relates to a honeysuckle cultivation method comprising the specific steps of field preparation, seed selection, field planting, fertilization and water delivery, field management, tree body trimming and pruning, and pest control and disease control. In the field preparation step, wide line spacing and narrow line spacing are arranged alternately, wherein the width of a wide line is 150-200cm and the width of a narrow line is 50-70cm, and water pipes are laid in the middle of the narrow lines. Vigorous seedlings of improved varieties are selected, wherein the heights of the seedlings are higher than 0.35m and the base diameters of the seedling are larger than 0.015m. A taproot retention length is higher than 0.155m, and a lateral root number is larger than 16. In the field planting step, a sowing pit spacing is 30-40cm, and one plant is planted in one pit. According to the method, a narrow line is arranged between every two lines, such that a plant border line dominance is artificially created, light transmittance between honeysuckle plants is increased, and photosynthetic efficiency is improved. The method facilitates honeysuckle plant top dressing, water delivery and harvesting, and facilitates nutrient balanced application and absorption. Wind stress on the plants is reduced, and honeysuckle yield is improved.

The invention relates to a sand fixation agent spraying trailer adopting a solar battery as a power supply, which belongs to the technical field of environmental protection application. A solar battery is connected with a photovoltaic controller through a conducting wire, the photovoltaic controller is connected with an energy storage battery through a conducting wire, the energy storage battery is connected with a control device through a conducting wire, and the control device is connected with a push bucket adjusting device, a pressure device, an electric heat conversion device, a sand stop wall outlet pipe adjusting device and a sand stirring auger power device through a conducting wire. The sand fixation agent is adequately mixed with sand particles to be squeezed into a sand wall, the sand wall is discharged onto the desert sand surface to form a sand stop wall, and the sand stop wall is firmer since the sand particles and the sand fixation agent are adequately mixed and squeezed; and when the sand fixation agent to be heated is utilized, the mixture of the sand fixation agent and the sand particles are heated. A sand stop wall system is built on the desert sand surface according to the requirement on control and prevention of desertification, the influence of hot expansion and cold shrinkage on the sand stop wall is small, and the intersected sand stop wall can defuse the wind stress and is free from being easily covered by drift sand.

The invention relates to a walnut cultivation method comprising the specific steps of field preparation, seed selection, field planting, fertilization and water delivery, field management, tree body trimming and pruning, and pest control and disease control. In the field preparation step, wide line spacing and narrow line spacing are arranged alternately, wherein the width of a wide line is 100-120cm and the width of a narrow line is 29-33cm, and water pipes are laid in the middle of the narrow lines. Vigorous seedlings of improved varieties are selected, wherein the seedlings are juglans sigillata dode or XiXiang walnut seedlings with heights higher than 0.35m and base diameter larger than 0.015m are selected. A taproot retention length is higher than 0.155m, and a lateral root number is larger than 16. In the field management step, with the water delivery pipe, soil water content is maintained at 70-85% of a maximal field water capacity, and fertilizer is delivered during water delivery. According to the method, a narrow line is arranged between every two lines, such that a plant border line dominance is artificially created, light transmittance between walnut plants is increased, and photosynthetic efficiency is improved. The method facilitates walnut plant top dressing, water delivery and harvesting, and facilitates nutrient balanced application and absorption. Wind stress on the plants is reduced, and walnut yield is improved.

The invention discloses a bladeless fan with a mirror, wherein the bladeless fan with the mirror comprises a fan body; a base of the fan body is internally provided with a turbine fan; the turbine fan extracts air beside the base and blows the air out at a circular ring air outlet above; the rear side of the circular ring air outlet of the bladeless fan is provided with a wind blocking mirror; and the wind blocking mirror is arranged at the air outlet at the rear side. The air blown out by the fan provided by the invention can be collected to one surface, the wind stress is intensified, also the bladeless fan part of the fan is provided with the mirror, and convenience is provided for making up and looking into the mirror for people.

The invention provides a test device for rapidly evaluating atmospheric wind stress corrosion and a test method of the test device. The test device comprises a test box body, an atmosphere cavity assembly is arranged in the test box body, the atmosphere cavity assembly is respectively connected with a temperature and humidity control module and a wind flow control module, and one side of the atmosphere cavity assembly is provided with a sample bracket. The device is small in size and convenient to move and assemble, and the flow velocity of air flow can be adjusted at will; meanwhile, two windand air flow generation modes can be adopted, namely point-shaped wind and air flow and line-shaped wind and air flow, so that the problem that only a single point-shaped wind and air flow impact effect is generated is solved; in addition, the device is provided with a sample bracket with a rotatable angle, so that the problem of evaluating the wind stress erosion effect at different angles can be solved.