40results about How to "Change geometry" patented technology

The invention discloses a truss structure with a high-order curve shape, comprising a connecting bar mechanism and an inhaul cable, wherein the connecting bar mechanism is obtained by interconnection of n four-connecting bar mechanisms by n-1 joints; the four-connecting bar mechanism is obtained by rotary connection of a first connecting bar, a second connecting bar, a third connecting bar and a fourth connecting bar; lengths of the first connecting bar and the fourth connecting bar are the same; lengths of the second connecting bar and the third connecting bar are the same; and lengths of the first connecting bar and the fourth connecting bar are longer than those of the second connecting bar and the third connecting bar. Because lengths of the first connecting bar and the second connecting bar in the connecting bar mechanism are different, in the movable truss, the joint of each sub connecting bar mechanism becomes arc during deformation; the corresponding geometrical shape is arc; and curvatures of the arcs change during the movement of the truss, so that the movable truss can form a geometrical shape with high-order curve.

The invention relates to a supercharger with exhaust gas recirculation. An engine, methods and systems are provided for supercharging charge air for internal combustion engines. The engine having an intake, and a blower with at least one impeller in the intake mounted on a rotatable shaft. An EGR line opens into the intake system upstream of the at least one impeller to form a junction point. A flap, pivotable about an axis running transversely with respect to the intake air flow, has: a first position which blocks the intake by way of a front side, and which opens up the EGR line; and a second position to cover the EGR line and open intake system wherein the flap is not planar, and has, at least on the front side thereof, at least one deformation as an unevenness.

The invention relates to a novel dimeric cationic surfactant. The structural formula of the surfactant is indicated as formula (A). The dimeric cationic surfactant introduces groups at a polar head to reach chemical bonding, restrain separating force among the original single-chain single heads and improve appetency among carbon chains, thereby improving surface activity and opening a brand new pathway for practical application. The surfactant has good water solubility. Compared with the general single-head surfactant, the surfactant has low surface tension and a cmc value and is a novel surfactant with a wide application prospect. As shown in the specification, wherein, n=18, 16, 14 or 12.

The invention relates to a hydraulic plant (I) that defines a path (4, 5, 6) for a forced water flow (E), and comprises at least one machine (1) of the turbine, pump or turbine-pump type, a member (8) provided with at least one deformable wall (81) and defining at least one closed volume (V8) with variable dimensions. The plant also includes means (9, 91) for supplying (Fg) the closed volume with a pressurised fluid. The member with a deformable wall (81) is mounted in a hydraulic duct (6) located downstream from a rotary portion (2) of the machine (1). The deformable wall defines, locally and downstream from the rotary portion (2), a modular section (S63) for the flow (E) passage in the hydraulic duct (6). According to the method of the invention, a pressurised fluid is injected (F9) into a closed volume having variable dimensions (V8) and defined by a member (8) provided in a hydraulic duct (6) located downstream from the rotary portion (2), in order to modulate the passage section (S63).

The invention discloses a flexible transmission mechanism of a non-closed type annular rotator and an application method of the flexible transmission mechanism. The flexible transmission mechanism comprises the non-closed type annular rotator, three pinch rollers, six tensioning wheels, a toothed belt, a housing and a gear, wherein the pinch rollers, the tensioning wheels and a central spindle of the gear are fixed on a base plate of the housing; the gear, the second tensioning wheel, the first tensioning wheel, the third tensioning wheel, the fourth tensioning wheel, the sixth tensioning wheel and the fifth tensioning wheel are arranged clockwise; the inner side of the toothed belt is fitted with the outer sides of the five tensioning wheels to form a closed ring; the outer side of the toothed belt is meshed with the gear and the outer tooth shape of the non-closed type annular rotator; the three pinch rollers are fitted with the inner side of the non-closed type annular rotator. The flexible transmission mechanism of the non-closed type annular rotator and the application method of the flexible transmission mechanism, disclosed by the invention, can enlarge the meshing area of the flexible transmission mechanism, the gear and the non-closed type annular rotator, so as to increase the meshing force, and meanwhile avoid interference and clamping between the flexible transmission mechanism, the gear and the rigid tooth shape of the non-closed type annular rotator.

The invention relates to a detachable two-bladed artificial mechanical cardiac valve, which consists of a circular valve support and two symmetrical semilunar valve blades, wherein the circular valve support is divided into two symmetrical semilunar valve supports; each valve support has a pair of shaft journals and chock blocks; the upper part and the lower part of each of the two symmetrical semilunar valve blades are respectively provided with two valve axes; the two pairs of valve axes are corresponding to the two pairs of shaft journals and can be conveniently inserted in and pulled out; and the two pairs of chock blocks respectively control the maximum opening angle of the two symmetrical semilunar valve blades. The two-bladed artificial mechanical cardiac valve is detachable and can conveniently change the geometrical shapes of certain parts of the mechanical cardiac valve according to design requirements while keeping other design structures unchanged, thereby ensuring lower cost and research data with more comparability.

The invention relates to the technical field of material lightening, in particular to a three-dimensional smooth curved surface dot matrix cell element, a design method, a dot matrix structure and a part. According to the design method, an original lattice cell curved surface is discretized and deviated to obtain an equidistant deviation curved surface corresponding to each grid unit curved surface, new lattice cell elements in different shapes are formed through the equidistant deviation curved surfaces, the smooth and continuous characteristics of the equidistant deviation curved surfaces are guaranteed, and a non-dimensional deviation parameter is introduced to achieve the design of the lattice cell elements in different shapes. The geometric configuration of the curved surface dot matrix cell element can be conveniently changed, so that the mechanical property is regulated and controlled, the dot matrix cell element meeting the requirement is obtained, and the application of the three-dimensional smooth curved surface dot matrix cell element is wider. According to the dot matrix structure formed by distributing the multiple three-dimensional smooth curved surface dot matrix cell element arrays, dot matrix cell element configurations of different shapes can be selected according to needs, and the dot matrix structure meeting the needs is obtained. At least one part of the parts is of a lattice structure, and the parts have the mechanical property meeting the requirement.

The present invention relates to a refrigeration device having an evaporator (103) for evaporating a refrigerant, which evaporator comprises an inlet pipe (105) for the admission of the refrigerant, in which inlet pipe there is formed a pipe region (107), which has a first flow cross section, and a constriction region (109), which has a second flow cross section smaller than the first flow cross section, and to a method for producing an evaporator of said type.

The invention relates to a Cu@Ru/MCM-41 nanocatalyst, and a preparation method and an application thereof, and belongs to the field of nanocatalyst studies. A full-silicon MCM-41 mesoporous molecular sieve and nano-Cu particles are synthesized, and the Cu@Ru/MCM-41 nanocatalyst is prepared in the presence of an organic modifier. The surface of large-grain nano-Cu is wrapped with nano-Ru to form a heterojunction type Cu@Ru shell-core structure, and the Cu@Ru shell-core structure is loaded on a porous component MCM-41, so the dispersiveness of the active component Ru is greatly increased, thereby the active component Ru exposes many active sites, and the catalyst has a good hydrogenation performance; the Cu@Ru/MCM-41 nanocatalyst prepared in the invention has high catalytic activity and stability when catalyzing the hydrogenation of 1-nitroanthraquinone to produce 1-aminoanthraquinone; and the preparation method has the advantages of simple process route, small dosage of the catalyst, greenness and environmental friendliness, and meets industrialization requirements.

The invention relates to an ultrasound sensor for sending and/or receiving ultrasound signals, comprising a diaphragm cup (3) having a transducer (11) and a housing (7), wherein the diaphragm cup (3) is releasably connected to the housing (7), a decoupling ring (13) is accommodated between the membrane cup (3) and the housing (7), and the membrane cup (3) is filled with a filling material (15). The decoupling ring (13) comprises a lip (27) that is designed in such a way that a gap (31) is formed between the lip (27) and the housing inner wall and the filling material (15) is accommodated in a space at the decoupling ring (13), which space is enclosed by the membrane cup (3) and the lip (27). The invention further relates to a use of the ultrasound sensor.

The present application relates to a laser cutting head (1), which comprises a body (2), a laser light source (3) located at a first end (4) of the body (5), a nozzle (6) located at a other end (7) ofthe body (5), an optical system (8) located inside the body (5) between the laser light source (3) and the nozzle (6). The body (2) comprises at least two parts (10, 11), which are slidable relativeto each other in such a way that, due to their reciprocal displacement, the mutual position of the laser light source (3) and/or the nozzle (6) and/or the optical system (12) can be changed, so that the geometry of the laser beam (9) inside the body (2) can be changed during use to achieve the desired parameters of the focus of the laser beam (9) on the surface of the workpiece (27).

The invention discloses a liquid double lens set construction method based on a micro fluidic chip, relating to the optical device technology field and solving the problem that the regulation range of the prior art is small. The liquid double lens set construction method comprises steps of choosing two fluids which have two different refractive indexes and are not dissolved with each other, enabling the two fluids to pass through one lens cavity in a laminar flow, enabling the two fluids to form a three-layer structure, in which a high refractive fluid is clamped between two low refractive fluids in the cavity of the lens and enabling the three-layer structure to commonly constitute a lens assembly. The invention can control the curvature of the interface of the high refractive fluid and the low refractive fluid through controlling the speed rate of the two fluids and enables the lens assembly to take on the working form. The method disclosed by the invention can perform convergence, collimation and divergence continuous adjustment.