44 results about "Spherical polyhedron" patented technology

A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising spherical dimples having a first, spherical chord depth and the second dimples comprising truncated spherical dimples having a second, truncated chord depth, and the second dimples are of larger radius than the first dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples.

The invention discloses a method for quickly establishing a spherical antenna cover with a metal latticed shell structure and belongs to the crossing field of civil engineering metal latticed shell mechanics and electronic engineering. The method comprises the steps of firstly establishing a 32-face body and a variant of the 32-face body, selecting pentagonal synchronous rotation random element and establishing planer variation elements through pentagonal rotation angle control; adopting a geodesic projection method on the new planer variation elements to perform topological mapping transformation towards the external spherical surface of the variant of the 32-face body through the center of a variation element plane, a boundary center and a pentagonal center and performing random triangular spherical polyhedral main body establishment; finally giving spherical antenna cover whole topological structure design. The whole antenna cover is composed of shed face film plates and node base assembling members, the film plates with polyester film opening structures and the triangular metal frame structure design are combined with the antenna cover whole topological structure design, so that the metal antenna cover has good mechanical property and electromagnetic property and has very high wind and snow resisting capacity and a small radiation loss characteristic.

The invention discloses a method for compounding YAG single crystal nanometer powder, wherein routine inorganic salt is used as raw material to obtain a solid precursor material by a coprecipitation; supercritical water and sub-critical water are used as reaction media; the YAG single crystal nanometer powder material is compounded under the pressure of 8-30MPa and the temperature of 300 - 420 DEG C. The YAG nanometer powder material compounded by the method of the invention has the advantages that the phase is pure; the feature of the grain is a regular approximate spherical polyhedron; the distribution of the grain size is appropriate; foundation is established for preparing YAG transparent pottery laser material or device and promoting the study and development of novel laser material.

The invention discloses a ceramic reinforced steel-based wear-resisting composite and a preparation method thereof, and relates to the technical field of wear-resisting composites. The ceramic reinforced steel-based wear-resisting composite is prepared and obtained by pouring alloy steel molten metal to carry out casting infiltration on a ceramic prefabricated body through a casting infiltration method. The ceramic prefabricated body comprises, by weight percent, 40%-55% of spherical ceramic particles, 40%-55% of non-spherical polyhedral ceramic particles and 2%-5% of a binding agent, wherein0.5 mm<=the particle size of the spherical ceramic particles<the particle size of the non-spherical polyhedral ceramic particles<=1.5 mm. In the ceramic reinforced steel-based wear-resisting compositeand the preparation method thereof, the spherical ceramic particles cooperate with the non-spherical polyhedral ceramic particles, the particle sizes of the spherical ceramic particles and the non-spherical polyhedral ceramic particles are controlled, a unique toughening function is formed among the spherical ceramic particles, the non-spherical polyhedral ceramic particles and an alloy steel matrix, the prepared composite shows good impact resistance and wear resistance, and the functions of cutting and furrowing of grinding materials can be effectively resisted; and the preparation method is simple, and the prepared composite is suitable for being used for manufacturing hammer heads, liner plates, grinding rollers, millstones and other wear-resisting work components.

The invention discloses a method for constructing a spherical grid structure, which comprises the steps that an icosidodecahedron and a variant of the icosidodecahedron are constructed and combined; new hexagonal planar primitives are established; regular polygon configuration and subdivision are performed on the new hexagonal planar primitives; planar topology expansion primitives are formed; a Hanaor method is replaced by a planar primitive topology expansion and node chord plane angle sum mapping transformation method for performing spherical mapping transformation and constructing a spherical polyhedron structure; and the spherical grid structure is constructed based on the spherical polyhedron. Compared with the current Hanaor geodesic projection method for designing and constructing a spherical polyhedron grid structure, the spherical polyhedron constructed with the method is simplified obviously in hexagon configuration category, the number of node types and the number of rod length categories; relative relationship among nodes, polygonal surfaces and side lengths of the obtained spherical polyhedron grid structure is simpler and fixed; all polygons meet the planar no-distortion condition; and mounting and implementation are further facilitated.

Disclosed are manufacturing of a golf ball. A golf ball has a plurality of circular dimples in its spherical outer surface, dividing into the faces of a spherical polyhedron by a plurality of division lines, wherein border lines are formed at the position of ±1˜2 latitudinal degrees to the division lines, the circular dimples are arranged by using the border lines as an occupation limit line of the circular dimples positioned opposite to the division lines, and the golf ball has no dimple on the pole in the center of the spherical polyhedron is provided, thereby increasing the performance such as a carry distance by raising the proper amount of area ratio of dimples, obtaining the uniformity thickness cover molding without the inferior product due to the balanced gates with uniform size.

The invention belongs to the field of mobile robots, and particularly discloses a sphere-like robot. The sphere-like robot comprises a sphere-like shell, a driving unit and a control unit, wherein thesphere-like shell is a sphere-like polyhedron composed of a hexagonal supporting surface and a pentagonal driving surface; the driving unit comprises a preset number of driving assemblies, and each driving assembly is installed on the corresponding pentagonal driving face; and the control unit is arranged in the sphere-like shell and used for controlling the driving assembly to stretch out and draw back so as to drive the sphere-like robot to move. According to the spherical-like robot, the control unit is used for controlling the driving unit to stretch out and draw back to drive the spherical-like robot to turn over, linear contact is kept between the spherical-like robot and a motion plane in the motion process, motion is controllable, motion resistance is small, surface contact is kept between the spherical-like robot and the motion plane in the static process, and high static stability is achieved.

The invention discloses a 30-rod spherical tension whole movable structure. A main structure is an outer frame in a tensegrity manner, and composed of 30 pressing rods, 90 inhaul cables and 60 hinge joints, each joint is connected with three inhaul cables and one pressing rod, each joint is equivalent, the structure has the good spatial symmetry, after the main structure exerts prestress, self balance can be achieved, stress can be kept free of losing without external force effect, a similarly-spherical polyhedron space is supported, according to the 30-rod spherical tension whole movable structure, through adjusting the length of a pulling and pressing part of the main structure, the opposite position of the ground projection of the whole center mass of the structure and the bottom contact ground can be changed, and the advancing motion of the structure is achieved.

The invention discloses a polyhedral hemispheroidal rapid assembling and disassembling modular house, which belongs to the technical field of buildings. The modular house is in the basic shape of a geometric dodecahedral hemispheroidal polyhedron, and can derive various series of products. The hemispheroidal polyhedron is composed of 12 same thin plate units; each thin plate unit is in the shape of an irregular quadrilateral, the two long edges of the quadrilateral are equal, and the two short edges of the quadrilateral are also equal; and the bottom surface of the formed polyhedron is in the shape of a regular octangle, the edge length of the regular octangle is equal to the length of the long edge of the quadrilateral, the diameter of the excircle of the regular octangle is 2.614 times as large as the edge length of the regular octangle, and the diameter of the incircle of the regular octangle is 2.415 times as large as the edge length of the regular octangle. A unique thin-shelled space of the house disclosed by the invention is high in structural strength, so that the house can resist loads in all directions in an optimum mode, and the house has a high space utilization rate; and the houses can be combined in various combination modes so as to form different architectural layout forms, so that the house can meet the complicated and rapidly changing function demands of the modern society.

The invention discloses a preparation method for phosphor powder of lanthanum, cerium, and terbium oxide, and is characterized in that the invention includes the following steps: confecting oxalic acid solution and taking the solution of lanthanum, cerium, and terbium oxide according to the proportion that the ratio of the mass of oxalic acid crystal to the mass of lanthanum, cerium, and terbium oxide equals to 1.2 to 1; adding distilled water or the composite liquid of the distilled water and ethanol into a reaction bottle is heated up to the preset value of 40 to 80 DEG C, and adding a surface additive and then adding acid to the reaction bottle to be stirred in the bottle; using two constant-pressure droppers respectively to add the solution of lanthanum, cerium, and terbium oxide and the oxalic acid solution with the mass proportion at the same time, and the solution of lanthanum, cerium, and terbium oxide and the oxalic acid solution can be dropped at the same time, and then stirring and ageing are went on to carry out; the sediment is separated from the mother liquid, and sucking filtration, washing and drying are carried out after the sediment mother liquid is cleared and cooled to the room temperature; putting the drying matter onto a resistance furnace and the temperature quickly raises to 920 to 980 DEG C and cooling the drying matter after the temperature is kept for 3 to 4 hours. As the surface additive and the acid are added in the crystal reaction process, the lanthanum, cerium, and terbium oxide in polyhedron that is similar to the sphericity is finally obtained.

A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, the first dimples comprising truncated spherical dimples having a first, truncated chord depth and the second dimples comprising spherical dimples having a second, spherical chord depth, the first dimples are of larger radius than the second dimples and have a truncated chord depth which is less than the spherical chord depth of the first dimples, and the total surface area of all first areas being less than the total surface area of all second areas.

The invention relates to a graph data Web3D visualization method and system and a medium, and the method comprises the steps: obtaining a preset number of visual nodes and visual edges from a preset graph database; calculating the pre-layout and the in-out degree of the graph data according to the visual nodes and the visual edges, and carrying out the configuration of the force-oriented graph; whether the number of the visual nodes is larger than a preset threshold value or not is judged, if yes, point fragment rendering is carried out on the visual nodes and the visual edges, and if not, spherical polyhedron instantiation rendering is carried out on the visual nodes and the visual edges. Through the method and the device, the problem of low efficiency in large-scale visualization of the graph data is solved. And high-efficiency visualization of large-scale graph data based on Web3D is realized.

A photogrammetry system includes a photogrammetry rig and a plurality of cameras. The photogrammetry rig includes a support frame and a plurality of support arms. The support frame includes a plurality of joint members and a plurality of struts each extending between two of the plurality of joint members to collectively form a spherical polyhedron shape having a center focal point. Each of the plurality of support arms extends through a different one of the plurality of joint members in a direction following a different radial ray from the center focal point. Each of the plurality of support arms is selectively, linearly slidable and securable relative to the different one of the joint members along the different radial ray between a position closest to the center focal point and a different position farthest away from the center focal point. Each camera of the plurality of cameras is secured to an end of a different one of the plurality of support arms nearest the center focal point within the spherical polyhedron shape.

An assembling type spherical cabin includes a bracket and panels, the bracket is in a hemispherical shape, and the panels are mounted on the bracket; the bracket includes a main bracket, the main bracket includes a plurality of keels and connecting pieces, wherein the keels are divided into short keels and long keels, and the ratio of the length of the short keels to the long keels is 1:1.618; theconnecting pieces includes five-claw connecting pieces and six-claw connecting pieces, and each of the five-claw connecting pieces and the six-claw connecting pieces includes a circular basal disc and a plurality of claw portions; and the claw portions centering on the center of the basal disc are evenly distributed on the peripheral surface of the basal disc, the claw portions are integrally formed with the basal disc and both are bent toward one side of the basal disc, and the bending angle is 18 degrees. According to the assembling type spherical cabin, the long keels and the short keels are connected through the five-claw connection pieces and the six-claw connection pieces to form an approximately spherical polyhedron, and greater elastic stress is not generated, so that the structural strength of the bracket of the spherical cabin is ensured; and meanwhile, the spherical cabin is assembled in a splicing mode to be easy to build, so that the effects of being easy to build and firm in structure are achieved at the same time.

Provided is a spherical polyhedron division structure of a golf ball where dimples are arranged to have a well-defined symmetry and a dimple pattern. In the spherical polyhedron division structure, wherein an arbitrary point on a surface of a spherical body constituting a golf ball is defined as a pole, a great circle dividing the spherical body into a northern hemisphere and a southern hemisphere with respect to the pole as a reference point is defined as an equator, the surface of the spherical body is divided into six areas formed by segments connecting the pole and points obtained by dividing the equator in units of 60°, each area is divided into spherical polygons formed by four spherical rectangles and two spherical triangles having sides with different lengths, and the spherical polygons arranged in different adjacent areas are symmetric with each other.

A photogrammetry system includes a photogrammetry rig and a plurality of cameras. The photogrammetry rig includes a support frame and a plurality of support arms. The support frame includes a plurality of joint members and a plurality of struts each extending between two of the plurality of joint members to collectively form a spherical polyhedron shape having a center focal point. Each of the plurality of support arms extends through a different one of the plurality of joint members in a direction following a different radial ray from the center focal point. Each of the plurality of support arms is selectively, linearly slidable and securable relative to the different one of the joint members along the different radial ray between a position closest to the center focal point and a different position farthest away from the center focal point. Each camera of the plurality of cameras is secured to an end of a different one of the plurality of support arms nearest the center focal point within the spherical polyhedron shape.

A panoramic sensing apparatus, comprising: a Fresnel lens system (110) and a light sensing device (120). The Fresnel lens system (110) comprises a composite Fresnel lens (111) in a shape of a frustum, at least one of an inner surface and an outer surface of a sidewall of the frustum being a tooth surface; at least two Fresnel units are distributed on said tooth surface. The light sensing device (120) is used for sensing light rays converged by the Fresnel lens system (110). As the composite Fresnel lens in the shape of a frustum is employed for sensing boundaries of a detection range, in the case where lens areas are the same as a whole, a larger detection range may be obtained, or light energy from each direction may be collected. Further, compared with a composite Fresnel refraction surface arranged on a spherical surface or on a spherical polyhedron, the composite Fresnel refraction surface which is arranged on a sidewall of a frustum involves lowered processing difficulty, and accordingly improved precision and defect-free rate.

In a golf ball having a surface divided by triangular concave sectors, an area of a surface of a sphere is divided into a plurality of areas forming spherical polyhedron and a plurality of dimples are formed for each of the plurality of areas. A triangular concave sector is formed by continuously forming a plurality of triangular concaves on each arc along great circles dividing the surface of the sphere into the plurality of areas. A planar shape of each of the plurality of triangular concaves is a triangle and the bases of the triangular concaves are arranged on the arc along the great circles. Peaks of adjacent triangular concaves are located at opposite sides with respect to the arc along the great circles.

A surface of a sphere is divided by using not only great circles but also small circles, forming a spherical polyhedron. The spherical polyhedron includes two spherical regular pentagons, each having a center at the pole, ten spherical isosceles triangles near the pole, ten spherical pentagons near the equator, and ten other spherical isosceles triangles near the equator. Compared to a related art, dimples are accurately arranged in spherical polygons. Thus, a dimple area ratio is improved and the number of dimples is appropriately maintained.

The invention discloses a construction method of a reticulated shell structure of wide-span pseudo-random metal radome, belongs to the crossing field of civil engineering rack structure and electronic engineering electromagnetic radiation. The construction method comprises that an icosidodecahedron and a variant thereof are constructed, a pseudo-random planar variation motif is established via synchronous rotation and rotation angle control of pentagons; pseudo random points between the surface and the boundary of the variation motif side are established; triangular configuration is subdivided via central points of the variation motif side, central triangular points, boundary central points and random points; and thus, nodes of the motif are expanded in the planar topology. A geodesic projection method is used, topology mapping and transformation are carried out on an external sphere of the variant of the icosidodecahedron via all the nodes of the variation motif, and thus, the main reticulated shell of the spherical polyhedron is established. The metal radome is compact in structure, the product processing, preparation and engineering practicality is high, processing and insulation are rapid and simple, and the metal radome can be used for national electronic, meteorological and heavenly body observation radars.

In a golf ball having a surface divided by triangular concave sectors, an area of a surface of a sphere is divided into a plurality of areas forming spherical polyhedron and a plurality of dimples are formed for each of the plurality of areas. A triangular concave sector is formed by continuously forming a plurality of triangular concave on each arc along great circles dividing the surface of the sphere into the plurality of areas. A planar shape of each of the plurality of triangular concave is a triangle and the bases of the triangular concaves are arranged on the arc along the great circles. Peaks of adjacent triangular concaves are located at opposite sides with respect to the arc along the great circles.

The invention discloses a method for constructing a spherical grid structure, which comprises the steps that an icosidodecahedron and a variant of the icosidodecahedron are constructed and combined; new hexagonal planar primitives are established; regular polygon configuration and subdivision are performed on the new hexagonal planar primitives; planar topology expansion primitives are formed; a Hanaor method is replaced by a planar primitive topology expansion and node chord plane angle sum mapping transformation method for performing spherical mapping transformation and constructing a spherical polyhedron structure; and the spherical grid structure is constructed based on the spherical polyhedron. Compared with the current Hanaor geodesic projection method for designing and constructing a spherical polyhedron grid structure, the spherical polyhedron constructed with the method is simplified obviously in hexagon configuration category, the number of node types and the number of rod length categories; relative relationship among nodes, polygonal surfaces and side lengths of the obtained spherical polyhedron grid structure is simpler and fixed; all polygons meet the planar no-distortion condition; and mounting and implementation are further facilitated.

Disclosed are manufacturing of a golf ball. A golf ball has a plurality of circular dimples in its spherical outer surface, dividing into the faces of a spherical polyhedron by a plurality of division lines, wherein border lines are formed at the position of ±1˜2 latitudinal degrees to the division lines, the circular dimples are arranged by using the border lines as an occupation limit line of the circular dimples positioned opposite to the division lines, and the golf ball has no dimple on the pole in the center of the spherical polyhedron is provided, thereby increasing the performance such as a carry distance by raising the proper amount of area ratio of dimples, obtaining the uniformity thickness cover molding without the inferior product due to the balanced gates with uniform size.

A golf ball having a plurality of dimples formed on its outer surface, the outer surface of the golf ball being divided into plural areas comprising at least first areas containing a plurality of first dimples and second areas containing a plurality of second dimples, the areas together forming a spherical polyhedron shape, wherein the first dimples are spherical truncated dimples and the second dimples are spherical dimples, and the second dimples are of larger radius and larger chord depth than the first dimples.

The invention discloses a grid structure based on a spherical polyhedron, which comprises nodes and connecting rods, wherein the spherical polyhedron is a 272-surface spherical polyhedron; the south pole and the north pole of the 272-surface spherical polyhedron are regular pentagonal surface; a primitive of the 272-surface spherical polyhedron is formed by three regular pentagonal surfaces, a regular hexagonal surface, three I-shaped hexagonal surfaces, six II-shaped hexagonal surfaces and six III-shaped hexagonal surfaces. The grid structure is designed according to planar primitive topology subdivision and equichordal face angle method, and adopts a connection method of rigid node construction and rod piece screw jointing, so that the grid structure is few in member category, and light in weight; members are convenient and quick to connect; the construction of the single-layer long-span space grid structure can be accomplished quickly without heavy complicated engineering machinery equipment; and the grid structure is suitable for quick construction of emergency long-span temporary buildings for rescue, relief and medical aid, and suitable for construction support of an underground large-space reinforced concrete shell dome, and large exhibitions or leisure and sports places.

The invention belongs to the field of mobile robots, and specifically discloses a spherical robot. This type of spherical robot includes a spherical shell, a drive unit and a control unit, wherein: the spherical shell is a spherical polyhedron composed of a hexagonal support surface and a pentagonal drive surface; the drive unit includes a preset number of drive components, each The two driving components are respectively installed on their corresponding pentagonal driving surfaces; the control unit is arranged inside the spherical shell for controlling the expansion and contraction of the driving components to drive the spherical robot to move. This type of spherical robot uses the control unit to control the expansion and contraction of the drive unit to drive the spherical robot to turn over. During the movement, it maintains a line contact with the movement plane. Not only the movement is controllable, but also the movement resistance is small. The planes are in surface contact and have high static stability.