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683 results about "Oblique line" patented technology

Definition Of Oblique. The lines that are drawn at an angle (not 900) to the horizon are called Oblique Lines. Oblique lines are neither vertical nor horizontal.

Method for designing few-leaf oblique line type variable-section main springs in gaps between oblique line segments and auxiliary spring

The invention relates to a method for designing few-leaf oblique line type variable-section main springs in the gaps between oblique line segments and an auxiliary spring, and belongs to the technical field of suspension steel plate springs. According to the structural sizes and the elasticity moduli of the oblique line type variable-section main springs, the endpoint deformation coefficient Gx-Di of each main spring and the deformation coefficient Gx-BC of the Nth main spring at the contact point of the corresponding oblique line segment and the auxiliary spring are determined first; then, according to the required auxiliary spring acting load design value and the endpoint deformation coefficient Gx-Di of each main spring, endpoint force FN of the Nth main spring is obtained; then, according to the thickness h of the root straight section of the Nth main spring, the Gx-BC and the FN, main spring and auxiliary spring gaps between the oblique line segment of the main springs and the contact point of the auxiliary spring are designed. Through simulation verification, it can be known that the main and auxiliary spring gap design value meeting the auxiliary spring acting load requirement can be obtained by means of the method, and the product design level, product performance and vehicle smoothness are improved. Meanwhile, design and testing cost is reduced, and product development speed is increased.
Owner:JIANGSU HAIHONG MACHINERY MFG

Method for checking useful load of auxiliary springs of non-end contact diagonal main and auxiliary spring

The invention relates to a method for checking a useful load of auxiliary springs of a non-end contact diagonal primary and auxiliary spring, and belongs to the technical field of suspension steel plate springs. The method comprises the following steps: firstly, determining an endpoint deformation coefficient and the half rigidity of each main spring, as well as a deformation coefficient Gx-CB of the contact point between an Nth main spring and the auxiliary spring at an oblique line segment according to a structural dimension and an elastic modulus of the diagonal variable cross-section main spring with non-isostructural end parts; then, checking the useful load of the auxiliary springs of the non-end contact few-leaf diagonal variable cross-section main and auxiliary spring according to the thicknesses of root straight sections of the main springs, Gx-CB of the Nth main spring, the half rigidity of each main spring and a design value of the clearance Delta between the main springs and the auxiliary springs. The simulated verification shows that an accurate checking value of the useful load of the auxiliary springs of the non-end contact diagonal main and auxiliary spring can be obtained by using the method, the design level and performance of products are improved, the vehicle running smoothness is improved, meanwhile, the design, manufacturing and test costs are reduced, and the product development speed is increased.
Owner:平邑经济开发区投资发展有限公司

Design method for end part- and root-reinforced few-leaf variable-section steel plate springs

The invention relates to a design method for end part- and root-reinforced few-leaf variable-section steel plate springs, and belongs to the technical field of suspension steel plate springs. The design method disclosed by the invention comprises the following steps: determining the toot thickness he of an equivalent single leaf according to the structure of each steel plate spring, a design rigidity, the thickness ratio of oblique line segments on the root and the end parts, and the thickness ratio of primarily-selected parabolic segments, and determining the maximum allowable thickness [h2] of the root according to an allowable pressure at first; then designing the number N and the root thickness h2 of the few-leaf variable-section steel plate springs according to he and [h2]; and then designing the thicknesses and the lengths of straight segments on the end parts of each leaf separately according to the end part thickness beta he of the equivalent single leaf. Through ANSYS simulation and verification, the accurate parameter design values of the end part- and root-reinforced few-leaf variable-section steel plate springs can be obtained by virtue of the method, the design level and the performance of products are improved, the weights of the springs are reduced, and the running smoothness of vehicles are improved; and meanwhile, the design and test expenses are reduced, and the development speed of the products is increased.
Owner:山东恒日悬架弹簧股份有限公司

Method for producing nutritive soil for practical and highly efficient soilless flower growth

ActiveCN102696462ASolve the problems of unfavorable growth and high production costRetain nutrientsAgriculture gas emission reductionCultivating equipmentsRare-earth elementAdditive ingredient
The invention discloses a method for producing nutritive soil for practical and highly efficient soilless flower growth, belonging to the agriculture flower cultivation technology field, which is characterized by taking zeolite powder, medical stone powder and perlite powder as main nutritive components, taking river sand and sawdust as auxiliary raw materials, after scientifically biological fermentation of the sawdust, producing the soil which can maintain much nutritive ingredient. A method for producing the soil includes: selecting an oblique lining grey green zeolite powder which mainly comprises silicon dioxide, aluminium oxide or the like, crushing and preparing stock with grain size of 0.2-1mm, and the pH value of 5.5-7.0; selecting the medical stone which mainly comprises the silicon dioxide, aluminium oxide, potassium oxide, sodium oxide, magnesium oxide or the like, mainly using trace elements and thirteen rare earth elements and anti-solidification effect, and crushing and preparing the stock with the grain size of 0.2-1mm and the pH value of 5.5-7.0; selecting large grain gardening perlite containing 100% pure inorganic cultivation medium and having stable physicochemical index, crushing and preparing the stock with the grain size of 0.2-1mm; selecting the sawdust after scientifically biological fermentation; selecting high quality of river sand, exposing under the sun for 1-2 days in a high temperature and preparing the stock; and fully stirring and mixing the stocks of zeolite powder, the medical stone powder, the perlite powder, the sawdust, and the river sand according to a preparation ratio of 20%, performing spray and sterilization treatment, and packaging into a product.
Owner:郭茂青

Road speed-buffering fault vision line-marking method

The invention relates to a road deceleration interlaced vision marked line method, which comprises at least two lane road marked lines which are regarded as parallel lines along a traffic direction on a road, two oblique lines which are symmetrically arranged are respectively crossed with acute angles of the two parallel lines, ends which are arranged on the middle portions of the two parallel lines are connected by a transverse line which is perpendicular to the parallel lines, a section of an interlaced vision marked line are formed by an oblique line which is crossed by the two acute angles and the connecting parallel lines between the parallel lines, and a plurality of groups of equi-spaced interlaced vision marked line sections are arranged on the interval of the road with a certain length to form the road deceleration interlaced vision marked line. The road deceleration interlaced vision marked line has important roles at the aspects of increasing the visibility, reducing the vehicle speed and reducing the accident rate and the like, is capable of increasing the highlighting of road dangerous sections (intersections) and increasing the alertness of drivers, the conscious deceleration effect of the drivers is obvious, and the road deceleration interlaced vision marked line method has the practical value of preventing and reducing the happen of traffic accidents. The deceleration interlaced vision marked line method is capable of being used for the safe design and improvement of a road intersection, a traffic accident black-spot or a road section.
Owner:TONGJI UNIV

Dual-use visible-light/infrared image pickup device

A shift in focal point due to longitudinal chromatic aberration of a photographing lens is properly corrected in accordance with various photographing conditions, by means of controlling the thickness of a variable-thickness optical filter interposed between an image pickup lens system and a solid-state image pickup element, on the basis of a correlation table defining the correlation between photographing conditions and the thickness of the variable-thickness optical filter that can correct a shift in focal point. A variable-thickness optical filter is interposed between a photographing lens system and a CCD having sensitivity ranging from the visible-light range to the infrared range. The thickness of the optical filter is changed, by means of controlling an actuator on the basis of a correlation table defining the correlation between the photographing conditions and the thickness of the variable-thickness optical filter which can correct the shift in optical focal point. The variable-thickness optical filter is formed from two wedge-shaped prisms combined together to form a parallel-plane plate, and the overall thickness of the variable-thickness optical filter can be changed, by means of moving the prisms in opposite directions while oblique lines of the prisms remain in contact with each other.
Owner:FUJI PHOTO OPTICAL CO LTD

Optical distortion correction method for line-scan camera

The invention discloses an optical distortion correction method for a line-scan camera. The method includes steps: step one, manufacturing a calibration board with an X-Y coordinate system, a plurality of oblique lines and a plurality of straight lines; step two, aligning the line-scan camera to the calibration board, and defining intersection points of a sight line of the line-scan camera and the straight lines and the oblique lines on the calibration board as feature points; step three, taking pictures of the calibration to obtain one-dimensional information of the feature points on an image plane of the line-scan camera, and calculating position information of each feature point; step four, subjecting camera data to one-dimensional and two-dimensional matching to adapt to a line-scan camera calibration method; step five, establishing a relationship between a world coordinate system and an image plane coordinate system to obtain intrinsic parameters and extrinsic parameters of the camera; step six, correcting camera distortion after distortion coefficients are obtained. The calibration board is simple and convenient to prepare and easy to operate; conversion from one-dimensional image data to two-dimensional image data is realized, and line-scan camera image distortion correction can be realized through coordinate transformation.
Owner:HARBIN INST OF TECH

Three-dimensional geological structure model angular point grid dissection method considering folds

ActiveCN105513131AImplement local encryptionFinely divided3D modellingAngular pointDissection
The invention provides a three-dimensional geological structure model angular point grid dissection method considering folds. The spatial morphological characteristics of the folds and the regulation of isoclinal lines in Ramsey fold classification are fully considered on the basis of a three-dimensional geological structure model, and angular point grid dissection of the geological structure model is performed with an angular point grid acting as a spatial metadata model and a stratigraphic structure model acting as layer control. Planar grid dissection is performed through the projection range of trend lines and the geological structure model in an XOY plane. Spatial rotation is performed on the multivalued surface stratums of the folds included in the geological model. Vertical grid dissection is obtained through growth of projection points on a curved surface along an inclination angle and other isoclinal line directions according to certain step length, and resetting is performed through inverse matrix transformation after completion of dissection. The spatial coordinates of the corresponding points are calculated through transverse and vertical grid dissection, and the spatial metal-model is constructed according to the coordinates and topological information and visually displayed so that transformation from the three-dimensional geological structure model to the angular point grid meta-model considering the folds is realized.
Owner:CHINA UNIV OF GEOSCIENCES (WUHAN)

Skew line tooth surface gear transmission pair and tooth width geometric design method

The invention discloses a skew line tooth surface gear transmission pair and a tooth width geometric design method. The skew line tooth surface gear transmission pair adopts an alternating axis transmission form composed of involute spur gears and skew line tooth surface gears. Each skew line tooth surface gear is formed by spreading straight tooth involute slotting cutters in a staggered mode; the skew line tooth surface gears can only mesh with the straight tooth cylindrical gears and can not mesh with the skewed tooth cylindrical gears with helix angle; and the tooth trace is approximate to a skew line and forms an oblique angle with the radius direction, thereby being very suitable for the demands of design diversification for aviation compact space. The method illuminates the gear shaping principle of the skew line gear and skew line tooth surface gear, and deduces the tooth surface equation of the skew line tooth surface gear. The margin line of the involute slotting cutters is utilized to calculate the position of the tangent point of the internal end tooth root. The condition that the outer end tooth top tooth thickness is equal to zero is utilized to obtain the sharpening condition. The condition of avoiding secondary cutting of the tooth root is combined with determine the cutter top fillet radius, thereby finally obtaining the tooth width of the skew line tooth surface gear.
Owner:CHANGAN UNIV

Abrasive machining method for cuneiform aspheric surface

The invention discloses a method for grinding a wedge-shaped aspheric surface, relates to an aspheric surface process and provides the method for grinding the wedge-shaped aspheric surface. The method is characterized in that a circular arc diamond emery wheel is selected as the processing tool; according to the characteristic of the machine tool for realizing the three-axis linkage, the method adopts the processing way of fixing work pieces and three-axis linkage of the tool; installation and position of the work pieces; division of the numerical controlling interpolation points; and the track planning and design of the numerical controlling process. The adaptability of the processing tool for the work pieces is analyzed, and the processing is performed by adopting the circular arc diamond emery wheel; the adaptability of the processing and detection means is analyzed, and the method adopts the processing way of fixing the work pieces and three-linear axis linkage of the tool; the shape types of the work pieces are analyzed, the method poses the surface points measuring and processing track planning method suitable for processing the wedge-shaped aspheric surface, which includes the methods such as the linear optical grating type processing, the oblique line envelope processing and the like. The method has the advantages of convenience, stability, high precision and the like, therefore, the method is suitable for popularization and application.
Owner:XIAMEN UNIV
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