89 results about "Helix" patented technology

The invention discloses a coil structure-based length self-sensing method for high polymer twisted artificial muscle, which comprises the following steps of: firstly, enabling the artificial muscle to be equivalent to N equidistant circular current loops, establishing an inductance calculation formula by combining a Biot-Savart law and a magnetic field superposition principle, and breaking through the limitation of a traditional solenoid model on a helical angle; then through MATLAB numerical simulation and iterative computation, fitting to obtain a power function describing the relation between inductance and length; and finally, proposing a parameter dynamic correction mode based on single-time initial inductance measurement according to complex factors such as actual magnetic flux leakage and skin effect, and realizing rapid adaptive calibration by adjusting a parameter b. In a word, the method creatively combines theoretical modeling with experimental correction, the sensing precision in a dynamic stretching scene is remarkably improved while the inductance-length macroscopic trend prediction capability is ensured, dependence on a large amount of experimental data is not needed, and the method has good engineering applicability and is worthy of popularization.

The invention relates to a nano groove array and a manufacturing method and application thereof, and the manufacturing method of the nano groove array comprises the following steps: taking single-stranded DNA (ssDNA) as a DNA brick, and carrying out self-assembly by adopting a complementary pairing principle of the ssDNA to obtain the nano groove array with a base and a side wall; wherein the width and the height of the nano groove array are fixed, the number of grooves is determined, and the nano groove array extends along a single direction; in the nano groove array, the width of the side wall and the width of the groove are equivalent to the diameter of two double-helix DNA (dsDNA). Compared with the prior art, the number of the grooves of the nano groove array is controllable, the width of the grooves is 4 nm, the period of the groove array is 8 nm, and the self-assembly defect can be greatly reduced.

Drilling bits for removing material from a formation are provided. One such bit includes a bit body including a first gauge pad and a second gauge pad. The bit further includes a first blade including a leading portion and a trailing portion, where the leading portion is disposed on the first gauge pad with a negative helix angle and the trailing portion is disposed on the second gauge pad with a positive helix angle.

The invention discloses an insulator surface potential scanning method and system, and relates to the field of insulator potential measurement, and the method comprises the steps: controlling a first probe to move to a starting point of a to-be-scanned insulator, and keeping a first preset distance from the surface of the insulator; wherein the insulator is fixed on the insulator fixing mechanism; the starting point is any point on the edge of a central conductor of the insulator; controlling the insulator fixing mechanism to rotate so as to drive the insulator to synchronously rotate, and controlling the first probe to linearly move from the starting point to the outer edge of the insulator; wherein the first probe scans the surface potential of the insulator when doing linear motion; a path formed by the rotary motion and the linear motion is a three-dimensional spiral line; and when the first probe moves to the outer edge of the insulator, the insulator fixing mechanism and the first probe are controlled to stop moving so as to complete scanning of the surface potential of the insulator. The scanning precision and efficiency of the surface potential of the insulator can be improved.

A magnetic component is disclosed and includes a first magnetic core, a second magnetic core and a coil. The first magnetic core includes a first magnetic cover and a first guiding portion. The second magnetic core includes a second magnetic cover and a second guiding portion. The first magnetic core and the second magnetic core are butted along an axial direction to form a winding column. The first guiding portion is located on the first magnetic cover, and increases a depth embedded into the first magnetic cover. The second guiding portion is located on the second magnetic cover, and increases a depth embedded into the second magnetic cover. The coil is wound on the winding column at a helical angle α relative to the winding column, and includes a first outlet terminal and a second outlet terminal led out along the first guiding portion and the second guiding portion, respectively.

The invention discloses an integrated rectifier diode module of a three-dimensional spiral structure, and relates to the technical field of power semiconductor devices, the integrated rectifier diode module of the three-dimensional spiral structure comprises an electrical function unit and a thermal management unit which are integrated in a monolithic mode, and the electrical function unit and the thermal management unit are coaxially arranged to achieve electric-thermal collaborative optimization. The specific structure is as follows: the electrical function unit comprises a substrate layer, an N + GaN conduction layer, an N-GaN drift layer and a three-dimensional spiral super-junction structure embedded in the N-GaN drift layer, the substrate layer, the N + GaN conduction layer, the N-GaN drift layer and the three-dimensional spiral super-junction structure are sequentially stacked from bottom to top, the three-dimensional spiral super-junction structure is formed by alternately and spirally arranging P-NiO regions and N-GaN regions, and charge balance is achieved; the electrical function unit further comprises an anode electrode and a cathode electrode, the anode electrode is arranged at the top of the three-dimensional spiral super-junction structure, and the cathode electrode is arranged on the surface of the N + GaN conduction layer; according to the invention, the power density is improved, the high-power application requirement is met, the device is suitable for the high-power-density field, the environmental adaptability is high, and the stable performance can be kept at different working temperatures.

Device (1) for generating electromagnetic radiation, comprising a wire helix (3) consisting of a wire, which is arranged in a tube (5) with a wall (7) transparent to electromagnetic radiation of a predetermined wavelength, wherein the tube (5) is closed at the ends (5a, 5b) and forms a closed space (5c) in which the wire helix (3) is arranged and which is filled with a noble gas or a noble gas mixture, wherein the wire helix (3) is formed at least over a predetermined section (11) as two mutually rotating, interlocking helices with a common central axis (12).

Apparatus and associated methods relate to measuring position and displacement of a 2D surface magnet array of at least three adjacent magnetic north and south tracks with an acute angle versus its motion displacement relative to a magnetic field sensor (e.g., magnetic sensing probe). In an illustrative example, the geometry of the 2D surface magnet array may be planar with adjacent and alternating north and south pole regions. In some embodiments, the 2D surface magnet array geometry may take the form of (1) an axial cylindrical helical multipole magnet array having individually magnetized layers that are oriented in helical shape, or (2) a radial disk spiral multipole magnet array with at least three adjacent north and south tracks oriented as a spiral shape.

The invention relates to a light-induced thermoelastic spectrum tuning fork with a double-helix structure and a preparation method thereof, a pair of vibration arms of the tuning fork are wound to form the double-helix structure, the tuning fork is installed on a base, the radius of a spiral curve of each vibration arm is gradually reduced from the vibration end of the tuning fork to the installation end of the base according to the Fibonacci sequence R = 0.168 n mm, n represents the number of turns of the spiral curve of the vibrating arm relative to the vibrating end of the tuning fork. Compared with the prior art, the tuning fork quality factor is remarkably improved, and the detection sensitivity and the system stability are enhanced.

A spin current magnetization rotating element includes: a first ferromagnetic layer having a variable magnetization direction; and a spin orbit moment wiring layer adjacent to the first ferromagnetic layer. At least one element in the spin-orbit moment wiring layer has a crystal structure in which when dimensions of lattice constants of the crystal structure are represented by a, b, and c: atoms occupy internal coordinates: (0, 0, 0), (0.5, 0.5, 0), (0.25, 0.75, 0.25), (0.75, 0.25, 0.25), (0, 0.5, 0.5), (0.5, 0, 0.5), (0.75, 0.75, 0.75), and (0.25, 0.25, 0.75); the ab planes are laminated to have a quadruple helix structure along the c-axis; the angle (gamma) between the a-axis and the b-axis is in the range of 60 DEG < = gamma < = 120 DEG, and the ratio of b to a (b / a) is in the range of 0.2 < = b / a < = 1.0.

The present invention discloses a method for solving the dispersion curve of ultrasonic guided waves of a multilayer helical structure, comprising establishing a 3D model of a multilayer helical structure in which each helical line has a single pitch length; meshing the cross section; calculating the mesh size in the mesh sweep direction; mesh sweeping each helical line; solving the unit stiffness matrix and unit mass matrix of each node, using a rectangular coordinate system for straight lines and a spiral coordinate system for spiral lines; assembling the cross-sectional overall stiffness matrix and cross-sectional overall mass matrix of each line, and assembling the pitch overall stiffness matrix and pitch overall mass matrix; periodically replicating and expanding the pitch overall stiffness matrix and pitch overall mass matrix of each line to assemble the overall stiffness matrix and overall mass matrix of the multilayer helical structure; solving the wave number, group velocity, and phase velocity; and matching the guided wave eigenvectors based on orthogonality. The present invention can achieve a fast and accurate solution to the dispersion curve of a multilayer helical structure composed of different pitches, handedness, sizes, or materials.

Device for producing a double-walled tube from a sheet (2) comprising: at least one first pair of profile rolls (4a, 4b, 5a, 5b) for producing a Z-profile with a middle leg having a length and two outer legs in the sheet (2), wherein a pair of profile rolls (4a, 4b, 5a, 5b) has an upper profile roll (4a, 5a) and an opposing lower profile roll (4b, 5b), and at least one bending upper roll (7a) and one bending lower roll (8b) for producing a circular bend in the sheet (2), wherein the bending upper roll (7a) and the bending lower roll (8b) are arranged to simultaneously produce a helix in the sheet (2), such that adjacent turns of the helix partially overlap, a device for connecting a first passage of the helix with an adjacent second passage of the helix wherein the middle leg of the Z-profile has a length such that the overlapping outer legs of the Z-profile are spaced apart from each other in the direction of the diameter of the helix when they are coiled into a helix and rounded.

The present disclosure provides a method of extending the path of a biological sample flow in a lateral flow assay on a test strip including a membrane. The method includes arranging the membrane in a helical shape in a test strip. The helical shape extends the flow path increasing interaction time between the biological sample and binding reagents on the membrane as the sample flows through multiple turns of the helix. Further, a lateral flow assay on the test strip including a membrane disposed on a surface of the test strip in a helical shape is provided. The helical shape extends a path of a biological sample flow through the membrane.

coil component (10) which has the following features: a core (10C) comprising a winding core section (11) with a central axis, a first flange section (12) connected to a first end of the winding core section (11) in a direction along the central axis and projecting outwards from a circumferential surface of the winding core section in a radial direction centered on the central axis, and a second flange section (13) connected to a second end of the winding core section (11), the second end being arranged on a side opposite the first end and projecting outwards from the circumferential surface of the winding core section (11) in a radial direction centered on the central axis; a wire (30) having a section that extends spirally along the circumferential surface of the winding core section (11) with respect to the central axis as a spiral axis; and an upper plate (40) which is longer in one direction along the central axis than the winding core section (11), and which is attached to the first flange section (12) and the second flange section (13) via an adhesive (50), wherein the adhesive (50) is not in contact with the winding core section (11) and if a first area is an area in which the adhesive (50) is present on a surface of the upper plate, and a second area is a combined area comprising an area in which the adhesive (50) is present on a surface of the first flange section (12) and an area in which the adhesive (50) is present on a surface of the second flange section (13), the first area is larger than the second area, whereby a section of the first area faces the winding core section (11), wherein in the first area the adhesive (50) comprises a thick film section and a thin film section, The thick film section is a section with a thickness that exceeds the thickness from the surface of the upper plate to peak points on the surface of the upper plate. The thin-film section is a section with a thickness that is less than the thickness from the surface of the upper plate to the peak points on the surface of the upper plate, and the thin film section faces the winding core section (11).

An apparatus is proposed for separation of dry granular mixture into fractions with different content of particles of high density, where the spatial inhomogeneity of the concentration of dense particles in the volume of the mixture is created by rotating the dry granular mixture inside the channel curved along the spiral.

This invention discloses a method, system, and storage medium for calculating the self-torque of a bitter coil, relating to the field of water-cooled magnet technology. The method includes obtaining the basic parameters of each coil in a water-cooled magnet; dividing the conductors in the upper or lower half of the coil into several annular grids; determining the coordinates of the grid center points based on the basic parameters; calculating the total radial magnetic field component at each grid center point; using the integral of the current density distribution of each grid over the single-turn cross-sectional area of ​​the coil, which equals the target current flowing through the coil, to solve for the current density distribution at each grid location; calculating the helix angle sine of the current helix path within the grid based on the helix path plane of the grid; calculating the axial current density component of each grid based on the current density distribution at each grid location and the corresponding helix angle sine; and calculating the electromagnetic torque of the coil when the target current flows through it based on the total radial magnetic field component and the axial current density component of each grid.

The present application relates to the technical field of tool edge type design, and specifically discloses a tool optimal edge type design method for chatter suppression under specific working conditions, comprising the following steps: S1, setting the helix angle and initial pitch of the tool as the optimization parameters; S2, calculating the critical stable axial depth of cut under specific working conditions through a critical depth of cut calculation function based on the optimization parameters; and S3, finding the local optimal edge type through a particle swarm algorithm with the critical axial depth of cut as the adaptive function. The tool optimal edge type design method for chatter suppression under specific working conditions has the advantages that it does not need to draw a complete SLD under global rotational speed, greatly improves the calculation efficiency, and can comprehensively consider the influence of the helix angle and pitch on chatter suppression, optimize the tool edge type in a wider edge type space, and accurately match the chatter suppression requirements of specific working conditions.

Methods for forming wellbore systems include drilling a helical injection portion of the wellbore system through a formation, the helical injection portion defining a helix centerline, drilling a production portion of the wellbore system through the formation along the helix centerline, and performing a fracturing operation to form a fracture network within the formation and define a fluid connection between the injection portion and the production portion through the fracture network.

A coil component (100), comprising: a substrate (101) and a planar spiral coil pattern (CP1, CP2) arranged on a surface of the substrate (101), wherein the coil pattern (CP1, CP2) has a higher roundness in its inner shape (ID) than in its outer shape (OD), wherein the outer shape (OD) of the coil pattern (CP1, CP2) has a first and a second section (311, 312) extending in a first direction, a third section (313) extending in a second direction perpendicular to the first direction, a fourth section (314) arranged between the first and the second section (311, 312) extending straight and obliquely to the first direction, and a fifth section (315) arranged between the second and the third section (312, 313) being curved such that its direction of extension changes from the first direction to the second direction, where the first, fourth, second, fifth and third sections (311, 314, 312, 315, 313) follow one another in this order, wherein the inner shape (ID) of the coil pattern (CP1, CP2) has a sixth section (316) corresponding to the first section (311) and extending in the first direction, a seventh section (317) corresponding to the third section (313) and extending in the second direction (312), an eighth section (318) corresponding to the fourth section (314) and extending straight and obliquely to the first direction, and a ninth section (319) corresponding to the fifth section (315) and curved such that its direction of extension changes from the first direction to the second direction, where the sixth, eighth, ninth and seventh sections (316, 318, 319, 317) follow one another in this order and where the ninth section (319) is not connected to the eighth section (318) by a section extending in the first direction.

An automated installation system, constructed to install tangless helically coiled inserts, includes an installation tool, a track, and an insert separator device. The tool includes a nozzle body defining a through-bore extending along an insertion axis, and a mandrel adapted to reciprocate and rotate within the bore. The track defines a channel extending along a first centerline for the travel of inserts disposed in the channel and to the installation tool. The device is mounted to the track and includes a shuttle adapted to intersect and move in the channel. The shuttle defines a through-bore having an axis aligned to the first centerline when in a first position for acceptance of an insert from the channel, and is aligned to a second centerline for expulsion of the insert from the track and into the installation tool. The second centerline is offset from the first centerline, and intersects the insertion axis.

The invention relates to the technical field of metamaterials, and particularly discloses a recoverable bionic spiral metamaterial structure with a variable stiffness characteristic, which comprises an upper pressing plate, a lower pressing plate, a plurality of S-shaped spring units and a single-layer frame for fixing the S-shaped spring units, and is characterized in that four S-shaped spring unit structures are connected through the single-layer frame to form a single-layer structure; the single-layer structures are connected layer by layer at a set interlayer spiral angle to form the recoverable bionic metamaterial structure; based on the spiral Bouligand structure and the S-shaped spring, the structure has rigidity transformation of two dimensions, and wide rigidity adjustment can be performed by changing the rotation angle of the unit structure and the interlayer spiral angle between the single-layer structures, so that the engineering application range of the metamaterial junction is expanded, and the metamaterial junction has wide application prospects in impact resistance, energy absorption and stress bearing.

1. The name of the design product: the gradual spiral angle wave milling cutter. 2. The use of the design product: for milling metal materials. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

A reactor includes: a first flow passage through which liquid and gas that reacts with the liquid flow; and a second flow passage provided adjacent to the first flow passage and through which a heat medium flows. Each of the first flow passage and the second flow passage is formed in a belt shape so as to extend in a length direction and a width direction orthogonal to the length direction, and is formed in a helical shape or a spiral shape around a vertical axis parallel to the width direction. The liquid is supplied to the first flow passage so as to flow in the length direction. The gas is supplied to the first flow passage so as to flow in the width direction.

[Technical Problem] Further improvement of a photosensitive member unit is provided. [Technical Means] The present disclosure provides a photosensitive member unit, an imaging device including a first main component side helical gear portion and a second main component side helical gear portion that can rotate coaxially, the photosensitive member unit including: a photosensitive member that can rotate about its rotation axis; a first unit side helical gear portion; and a second unit side helical gear portion, wherein the torsion direction of the teeth of the second unit side helical gear portion is the same as the torsion direction of the teeth of the first unit side helical gear portion, wherein the helix angle of the teeth of the second unit side helical gear portion is greater than the helix angle of the teeth of the first unit side helical gear portion, and wherein the first unit side helical gear portion and the second unit side helical gear portion are rotatable in a state in which the first unit side helical gear portion is meshedly engaged with the first main component side helical gear portion and the second unit side helical gear portion is meshedly engaged with the second main component side helical gear portion.

The invention discloses a self-expansion type single-channel spiral flow deflector which comprises a flow guide part which is of a continuous spiral sheet structure and can be compressed when pressure is applied to the outer side of the flow guide part; the outer side of the flow guide part is sleeved with a sleeving part, and the sleeving part can limit the compressed flow guide part; through mechanical constraint shaping, elastic recovery expansion of the flow deflectors within 15 seconds is achieved, and interference fit with the casing pipe under the attaching pressure larger than or equal to 3 MPa is formed; by means of the optimized design of shape memory alloy pre-compression, a mechanical constraint release activation mechanism, an interference fit fixing mode with a sleeve, a reserved center cavity with the diameter larger than or equal to 0.5 D, a compatible ignition device with the diameter smaller than or equal to 300 mm, the spiral angle ranging from 25 degrees to 40 degrees and the screw pitch ranging from 0.6 D to 1.0 D, airflow is guided to form a 5-8 m / s rotating flow field, the gas-solid contact time is prolonged by 25%-35%, and the carbon conversion rate is increased by 10%-15%; the yield of synthesis gas (H + CO) is increased by 8-12%; and ash accumulation is inhibited by centrifugal force.

The invention discloses a theoretical model for spiral self-feeding shape correction of a pipe, which comprises the following steps of: establishing a theoretical formula of total kinetic energy T of the pipe on the basis of a thin-wall hypothesis under the conditions that a rotating shaft of the pipe is assumed to coincide with a bent plane and axial rolling of the pipe is ignored; establishing a simplified theoretical formula of potential energy V of the pipe on the basis of a reciprocating bending unified curvature theorem and a bidirectional effect under the condition of neglecting plastic dissipation of the pipe; modeling is conducted on the movement track of the pipe on the basis of the Lagrange equation so as to obtain a movement track equation set, and the movement track equation set comprises a coupling relational expression among the circumferential bending angle of the pipe, the spiral azimuth angle of the pipe and the axial self-feeding displacement s; wherein the Lagrange equation is as follows: Qq is the generalized force applied to the pipe, L is the Lagrange quantity, and q is the generalized coordinate system and is a first derivative of q.