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77results about How to "Reduce line spacing" patented technology

Bicycle assisting force system adopting middle-axis torque sensor

The invention discloses a bicycle assisting force system adopting a middle-axis torque sensor. With the adoption of the system, a torsion moment, a rotary speed and a direction of a middle axis are measured by adopting the middle-axis torque sensor; after code table treatment, a voltage signal, which is the same as that of an electronic rotary handle of an electric vehicle, is output to a motor driver; and corresponding power is output by a wheel hub motor, and the power and a treading torque form a proportional assisting force. A torque input end with a first type of structure is a tapered semi-axis and a spline semi-axis is a torque output end; and a limiting ring and a semi-axis spherical bearing are further included. A second type of structure adopts two ends of the tapered middle axis to input torques; a torque output end is a thread semi-axis; and a rolling needle bearing and sprocket wheel four jaws are further included. The assisting force system disclosed by the invention is strong in stability and is suitable for various types of bicycle types; and the assisting force can be effectively provided for the bicycle, and an assisting force gear is set by reversely treading for a pre-set angle by a foot or pressing a key of a code table by a hand in a riding process.
Owner:钟德斌

New method for wide and narrow row and compact planting of kiwi fruits by adopting tilting trellises

The invention relates to a new method for wide and narrow row and compact planting of kiwi fruits by adopting tilting trellises. The kiwi fruits are planted in wide and narrow rows, and tilting trellises are built along the rows; in each wide row, a plurality of column units are arranged; each column unit consists of two vertical columns with the same length; the two columns tilt towards each other between the wide rows, and the upper ends of the two vertical columns intersect to form a herringbone; the column units in two adjacent rows are equidistantly arranged in a staggered way; four iron wires are equidistantly arranged vertically on the tilting vertical columns in each row for the kiwi fruits to climb; only trunks of the kiwi fruits climb onto the trellises, and a single-arm four-layer or two-arm four-layer shaping technology is adopted; through herringbone intersections at the upper ends of the column units, an intersect parallel iron wire mesh is formed in vertical and horizontal directions, and the iron wire mesh is covered by a wind-proof and sunlight-shading net or a brightening and cold-proof film. Compared with the prior art, the new method has the advantages as follows: the planting density is more reasonably increased, the population structure is more scientifically improved, the utilization rate of light energy is more effectively improved, ecological resources are more fully utilized, and production targets of high yield, high quality and high efficiency are achieved.
Owner:张恩祥

Electromagnetic ultrasonic detection method for plane residual stress

The invention relates to an electromagnetic ultrasonic detection method for plane residual stress, belongs to the technical field of ultrasonic detection, and relates to an electromagnetic ultrasonicdetection system and detection method for plane residual stress. The method comprises the steps of: firstly, assembling the electromagnetic ultrasonic detection system, and measuring stress detectionultrasonic signal waveforms in three directions by using ultrasonic coils in an electromagnetic ultrasonic surface wave probe so as to calibrate an acoustic elastic coefficient of a material. The surface wave signals in three directions of a point to be measured are collected, and the magnitude and direction of plane stress are calculated by using an ultrasonic detection theoretical formula. In the method, one-time positioning of the two principal stresses in the plane stress state and the included angle between the two principal stresses, and simultaneous measurement of multiple parameters are realized by using the surface wave probe with the function of three-transmitting and three-receiving. The distance between receiving and transmitting probes is reduced and the spatial resolution ofthe probe are improved by reducing the turns per coil, the line width and the line distance of ultrasonic transmitting and receiving coils. A circuit board and an impedance matching network are connected by using a radio frequency connector, thereby facilitating the installation and repeated use for multiple times, the detection method is simple, and the efficiency is high.
Owner:DALIAN UNIV OF TECH

Shaping and pruning method for plum trees and apricot trees

The invention relates to the technical field of fruit farming, in particular to a shaping and pruning method for plum trees and apricot trees. According to the shaping and pruning method for plum trees and apricot trees, the first year growth period: seedlings are planted in autumn or early spring, and primary main branches are cultivated; the first year dormancy period: secondary main branches are cultivated; the second year growth period: the secondary main branches are established; the second year dormancy period: lateral branches are cultivated; the third year growth period: the lateral branches are established; the third year dormancy period: fruiting branches are cultivated; overdense weak branches of the primary main branches, the secondary main branches and the lateral branches aresparsely separated from the base, leaving a short cut of 2-5 cm when over 1/2 of the thickness of a raw branch; in the fourth year of growth, potassium dihydrogen phosphate and sugar alcohol boron are sprayed once in June and July respectively to ensure flower buds differentiation in summer and fruit bearing in the next year; and in the fourth year of dormancy, tree shape is kept, and excessive branches and overdense branches disturbing the tree shape are removed to ensure that the thickness of branches is progressively reduced. The shaping and pruning method can make full use of cubical space, save land resources and prone to managing.
Owner:SICHUAN AAS HORTICULTURE RES INST

No-tillage no-hole farming method for directly seeding broad bean in rice stubble

InactiveCN102090260ASave labor to fight for the seasonFavorable stable and high yieldHorticultureFertilizerHorticulture
The invention discloses a no-tillage no-hole farming method for directly seeding broad bean in rice stubble, comprising the following steps: (A) earthing up broad bean ridges: lofting, ditching and earthing up the ridges on a rice stubble soil-compaction field, wherein the width of each ridge surface is 100cm, and the width of each ridge ditch is 40cm; (B) directly seeding broad beans: sowing two rows of broad beans on each ridge along with a rib strip, wherein the inter plant distance is 30cm, the row space is 60cm, the inter plant distance between the ridges is 80cm, 3170 holes are dug per acre, two broad beans are planted in each hole, and 6340 broad beans are planted per acre; (C) carrying out base fertilizer furrow application: carrying out fertilizer furrow application along with the inner sides of ribs; (D) deep digging furrows: ploughing ditch soil below an opposite ridge by a farmer standing on the ridge surfaces, deep ploughing the furrows to be 20cm below a field surface, and evenly putting upturned soils on the ridge surface; and (E) carrying out field management. The no-tillage no-hole farming method has the advantages that all types of field can be ploughed under any weather, no-tillage no-hole rice stubble row planting can be carried out, the row space is enlarged, the inter plant distance is reduced, double-row strip seeds are performed with reasonable close planting, soil is heaped in zanjon for logging and preserving soil moisture, manual striving seasons are saved, and the method is favourable for the high and stable yield of the broad beans.
Owner:狄正兴

Economical and efficient production method of tobacco male sterile first generation hybrid seed

The invention provides an economical and efficient production method of a tobacco male sterile first generation hybrid seed. The method includes: at an altitude of less than 700 meters, under the climate conditions meeting the requirements of early vegetative growth and later reproductive growth of tobacco plants, conducting seedling culture on a maternal tobacco plant and a paternal tobacco plant separately, then employing isolation planting, performing topping on the maternal tobacco plant, then collecting paternal pollen and preparing pollination, during pollination, adding starch and blending them, adopting an artificial pollination pen or pollination gun to perform pollination, carrying out deblossoming on the maternal tobacco plant both before and after pollination, and when the capsule pericarp browning reaches more than 80%, conducting single fruit harvesting in batches and performing drying, then conducting threshing processing to obtain the male sterile first generation hybrid seed. The method provided in the invention has the advantages of reasonable design, low production investment, and high seed yield. On the basis of ensuring a variety purity (99%) and a seed germination rate (95%), maximization of a high-quality germplasm propagation coefficient is realized, the seed yield is greatly improved, and the seed production cost is decreased significantly.
Owner:TOBACCO RES INST OF HUBEI PROVINCE

Inner layer manufacturing method of multilayer thick copper plate

ActiveCN111050495ASmall slot widthReduce line spacingCircuit metal processingMultilayer circuit manufactureCopper foilEtching
The invention provides an inner layer manufacturing method of a multilayer thick copper plate, which comprises the steps of obtaining a copper foil plate, and carrying out surface treatment on the copper foil plate; carrying out pattern processing on the copper foil plate by adopting a laser cutting method to form a pre-compiled pattern; adding prepreg between two copper foil plates, and laminating the prepreg and the copper foil plates in sequence; and carrying out vacuum heating and press-fitting to form a laminated plate. According to the invention, the copper foil is cut by laser, and thekerf width is small, i.e., the line spacing between lines is small; chemical etching is not needed in laser cutting, and the whole process is environmentally friendly and free of pollution; meanwhile,the edges of the kerfs are smooth, the side etching phenomenon of chemical etching is avoided, the instantaneous current impact resistance of the coil is further enhanced, and the consistency of products is improved at the same time. In the copper foil cutting process, gaps are filled with resin for the kerfs, so that the local pattern can be prevented from falling off, and the stability of the pattern is enhanced on the one hand; and on the other hand, the gaps of the pattern are filled with resin in advance, the number of layers of prepreg in the press-fitting process can be reduced, and the plate thickness of a finished product is reduced.
Owner:QINGSHENG AUTOMATION TECH SHANGHAI

Transversely-moving type small-line-center-distance single-crossover monorail turnout

The invention discloses a transversely-moving type small-line-center-distance single-crossover monorail turnout which comprises a turnout base (14) and turnout beam fixing components. Multiple guide rails (12) are arranged between the turnout beam fixing components and provided with a crossover turnout component and a linear turnout component. The crossover turnout component comprises a first crossover turnout transversely-moving beam (5) and a second crossover turnout transversely-moving beam (6). The linear turnout component comprises a first linear turnout transversely-moving beam (7), a third linear turnout transversely-moving beam (9), a second linear turnout transversely-moving beam (8) and a fourth linear turnout transversely-moving beam (10). By the adoption of the transversely-moving type small-line-center-distance single-crossover monorail turnout, multiple sets of transversely-moving turnout beam components are arranged between the turnout beam fixing components, the guide rails and sliding blocks are arranged between the transversely-moving turnout beam components and the turnout base, a gear and a rack are driven through a drive motor, so that the different transversely-moving turnout beam components are driven to move, and quick change and removal under different working conditions are achieved.
Owner:CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP

Repairing method for laser marking-off anomaly of solar cell panel and solar cell panel

InactiveCN108899382ASolve the problem of risk of obsolescenceReduce line spacingPhotovoltaic energy generationSemiconductor devicesSolar powerSolar cell
The invention relates to the technical field of solar power generation and in particular relates to a repairing method for laser marking-off anomaly of a solar cell panel and the solar cell panel, aiming at solving the problems in the prior art that single cells are short-circuited due to the laser marking-off anomaly, even the solar cell panel is confronted with scraping. According to the repairing method for the laser marking-off anomaly of the solar cell panel, the solar cell panel is divided into a plurality of the single cells which are connected in series along a first direction throughlaser marking-off; the method comprises the following steps: determining a marking-off position of a first short-edge insulation line again according to a position of a region with the laser marking-off anomaly; marking off the insulation line again at the marking-off position of the first short-edge insulation line, which is determined again, so as to obtain a second short-edge insulation line toisolate the region with the laser marking-off anomaly from a region enclosed by the second short-edge insulation line and other original insulation lines except the first short-edge insulation line,wherein the first short-edge insulation line is any one short-edge insulation line parallel to a first direction in the original insulation lines.
Owner:GUANGDONG HANERGY THIN FILM SOLAR CO LTD
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