221 results about "Archimedean spiral" patented technology

The invention discloses a rubber belt type energy accumulator and aims to provide a novel rubber belt type energy accumulator which is high in energy transformation ratio, high in energy density, light in weight and simple in structure. The rubber belt type energy accumulator comprises an end cover, a casing, a rubber belt, a rotary drum, multiple guiding rolling shafts, a power transmission shaft, a brake shaft and a brake device, wherein the rubber belt is supported by the multiple guiding rolling shafts to extend along an approximate Archimedes spiral. The rubber belt type energy accumulator can be used for storing and transforming kinetic energy; in the energy accumulation process, the kinetic energy inputted to the energy accumulator can be stored in the form of rubber belt elastic potential energy; and in the energy releasing process, the elastic potential energy stored in the rubber belt is transformed into kinetic energy which is outputted to the external environment. The rubber belt type energy accumulator is suitable for recycling braking energy of equipments such as vehicles and elevators.

The invention relates to a robot capable of synchronously climbing stairs. The robot comprises a tray component, a first walking component, a second walking component and a rotation driving device, wherein the tray component comprises a first support member, a second support member and a third support member, of which the mutual distance and height can be adjusted according to stair steps, the first walking component and the second walking component are respectively connected to the lower ends of the first and third support members and are the same in structure, each walking component comprises an axle, a left wheel member and a right wheel member which are located at the two ends of the axle, the two wheel members are symmetric and identical in structure, shape curves of each wheel rim consist of end-to-end-connected Archimedean spirals and arcs, then, the distance from the wheel rims to the axes of the axles is changed along with rotation, and the rotation driving device is mounted at the lower end of the second support member, is in transmission connection with the first walking component and the second walking component respectively and drives the first walking component and the second walking component. The robot can bear a heavy load, keep horizontal, stably and automatically climb the stairs and walk on flat ground.

The invention relates to a centrifugal disc for producing glass wool. The centrifugal disc is characterized in that a curved slot for guiding the flowing direction of glass metal is formed in the bottom surface of the centrifugal disc, and the curve is in the shape of an Archimedean spiral; a main shaft installing hole in the bottom surface of the centrifugal disc is used as the starting end of the curved slot, a lower terminated line of a hole in the inner wall of the centrifugal disc is used as the ending end of the curved slot, and the curved slot is arranged in the same direction as the rotating direction of the centrifugal disc. The curved slot in the shape of the Archimedean spiral is formed in the bottom of the centrifugal disc, and is arranged in the same direction as the rotating direction of the centrifugal disc, therefore, the centrifugal disc has the characteristic of guiding the glass metal to adhere on the lateral wall of the centrifugal disc continuously and evenly so as to prevent the glass metal from generating turbulence in a centrifugal process; the centrifugal fiber-forming effect of the glass wool is significantly improved. The centrifugal disc can be widely applied to the field of preparing the glass wool in different levels, and can provide references for other fields of preparing materials in a centrifugal method.

The invention discloses a tooth cutting method for a bevel gear with spherical involute toothed archimedes spiral teeth and a machine tool thereof. The method overcomes the disadvantages that the current tooth cutting method forms principle errors, has complex revision calculation, trial cutting and adjustment of a machine tool, and the like. The tooth cutting method adopts a machine tool with double stations and a single cutter head, which can continuously tooth dividing. When teeth are cut, the I station at one side of the cutter head completes the rough cutting of tooth sockets and the finishing cutting of the concave tooth surfaces of teeth; then the II station at the other side of the cutter head completes the finishing cutting of the convex tooth surfaces of the teeth, each cutter tooth straight edge on a cutting tooth cutter head envelopes and cuts out the side surfaces of the teeth, the circular arc edge of tooth top cuts out the tooth root, and the rough cutting concave edge cuts off the margins of the tooth sockets; and when the teeth are cut, a cutter head shaft and the tooth blank shaft are in a spatial cross position, the rotating end surface of the cutter head is perpendicular to the tangent plane of the gear blank base cone, the cutter head, the gear blank and the big circular plane of an imaginary spherical surface rotate in an uniform speed, the cutter head is in the rotary feed when cutting the teeth, and the continuous hobbling base cone toothed portion is the spiral bevel gear of Archimedes. The invention provides a machine tool, a cutter head and a cutter tooth for realizing the tooth cutting method.

A photo-curing 3D (three dimensional) printer based on helical scanning and a flexible interface comprises a stepper motor in the middle of the bottom of the printer, the output of the stepper motor is connected with an electric slip ring, a linear feed movement platform is arranged on the electrical slip ring, an integrated LED (light-emitting diode) camera lens is connected to the linear feed movement platform, a film supporting glass holder is arranged outside the integrated LED (light-emitting diode) camera lens, the integrated LED (light-emitting diode) camera lens supports film supporting glass, the film supporting glass is contacted directly with a nonstick film thereon, the nonstick film is fixed on the integrated LED camera lens by a resin groove and a resin groove film fixing cover, the nonstick film supports photosensitive resin, a solidified resin layer is attached onto a lifting head, the lifting head is connected with a lifting system, the LED camera lens is driven to perform Archimedes helical path scanning on the surface of the resin by use of planar helical motion combining rotary motion with linear motion, so that the oscillation can be effectively avoided, the scanning speed and accuracy are improved, the tearing process is more efficient and economic, and the work efficiency of the printer is improved.

A broadband antenna constructed according to the present invention for use with an RFID tag device is formed with a three dimensional (3D) structure. The 3D structure of the antenna enables the antenna to be constructed with a size smaller than that of conventional two-dimensional antennas, consequently reducing the size of the overall tag device, but without any loss of efficiency. The 3D antennas are formed with Archimedean spiral sections and can be tuned to a specific frequency in a particular frequency band, enabling many more unique RFID devices to be defined and operate within that band in conjunction with a reader utilizing a frequency-hopping method without interfering with one another. Additionally, the antenna can receive signals from a higher frequency band than the band in which the antenna resonates to enable those higher power signals to supply power to the device without interfering with the resonant frequency signals received by and transmitted from the RFID device.

The invention discloses a 24-hour intraocular pressure monitoring sensor based on fiber gratings. The 24-hour intraocular pressure monitoring sensor based on the fiber gratings comprises a soft corneal contact lens, an optical fiber and a plurality of fiber gratings, wherein the corneal contact lens is spherical crown-shaped and used for fitting with the eyeball of a patient in a shape matching mode when wearing; the optical fiber is embedded in the lens layer of the corneal contact lens, the body is arrayed in an Achimedean spiral mode around the center of the contact lens, and the tail end thereof is led out to serve as an interaction port; the fiber gratings are arranged on the optical fiber at intervals, when the eyeball is deformed due to intraocular pressure undulation, the fiber gratings bear the corresponding stress change, and corresponding feedback optical wave signals are output through the tail port of the optical fiber. The 24-hour intraocular pressure monitoring sensor based on the fiber gratings is capable of realizing real-time high-precision measurement for the pressure of multiple sites according to the reflection wavelength change, and meanwhile, the 24-hour intraocular pressure monitoring sensor based on the fiber gratings has advantages of high sensitivity, large dynamic range, good stability, comfortable use, small volume, light weight and the like.

The present invention is a unit for eliminating the fluctuation of luminous energy reduction by keeping the response time of a shading mechanism constant even if a diaphragm opening degree differs when reading every pixel by setting a shading period. This unit is provided with a shading mask having a quadrangular or V-shaped opening and moves a shading shutter in the horizontal direction perpendicular to the vertically moving direction of a diaphragm plate. Therefore, a shading period is set in accordance with the constant response time of the shading shutter and the rate of luminous energy reduction becomes constant. Moreover, a high-quality static image having a stable brightness can be obtained by reading the signal of every pixel obtained by a CCD through one-time exposure while using the shading period and then pixel-mixing signals. Furthermore, it is possible to use the Archimedean spiral for the outer periphery of the diaphragm plate or the shading shutter.

The invention discloses a volute of a centrifugal fan. The volute comprises a volute body, a diffusion cavity and a centrifugal blade impeller. The volute body is in an Archimedean spiral design or a logarithmic spiral design, the diffusion cavity is connected with the volute body, the centrifugal blade impeller is arranged inside the volute body, and a profile drawing center O of the volute body is deviated relative to the central axis of the centrifugal blade impeller, so that the distance D1 from the centrifugal blade impeller to the inner wall of the diffusion cavity is increased. The invention further discloses a method for manufacturing the volute of the centrifugal fan. The volute and the method have the advantages that airflow diffusion space can be reasonably arranged according to the distribution condition of the air speed of an outlet of the centrifugal fan, and main airflow can be smoothly accelerated from the centrifugal blade impeller, and then flows through the volute body to be transmitted to a diffusion opening of the diffusion cavity; obstacles to the main airflow are reduced, and accordingly integral flow resistance of an air channel of the fan and friction-induced noise of the air channel of the fan are reduced; purposes of preventing the airflow from being collided with the inner wall surface of the volute, increasing the quantity of air and reducing the noise are achieved; the quantity of the air generated by the fan is increased.

The invention aims to provide an Archimedes spiral wheel and double-rocker mechanism for a stair climbing trolley, which reflects brand new concepts on automation up and down stairs and has stable and continuous motion. The Archimedes spiral wheel and double-rocker mechanism consists of Archimedes spiral trilobed wheels and a double-rocker mechanism, which are connected. The Archimedes spiral wheel and double-rocker mechanism for the stair climbing trolley is applied to a stair cleaning robot which is provided with two sets of transmission mechanisms, a main motor is meshed with a driving centre shaft through a gear, and then four chain wheels on the centre shaft drive four Archimedes spiral trilobed wheels to move respectively. The Archimedes spiral wheel and double-rocker mechanism for the stair climbing trolley has the advantages of stable and continuous motion, strong bearing capacity and running on the flat ground. The invention provides a movable working platform for climbing the stairs, which is convenient to convey up and down the stairs. The mechanism is applied to cleaning the stairs.

The invention relates to a soft and elastic joint based on Achimedean spiral elastomers. The soft and elastic joint comprises an input shaft, a first one-way bearing, the elastomers, a second one-way bearing, long pins, a sleeve, an output shaft and a flange plate. The soft and elastic joint is applied to a joint of a rehabilitation robot, so that softness and elasticity are achieved in the positive rotation process and negative rotation process of the joint of the rehabilitation robot; the problem that rigid shock is generated to the rehabilitation robot and a person due to external load is solved, and the risks that the robot is damaged and the human body is injured are avoided. Meanwhile, the problems that a joint of a traditional robot is large in occupied space, loose in structure and the like are solved. By means of the soft and elastic joint based on the Achimedean spiral elastomers, the joint mode of the traditional robot is changed, and the soft and elastic joint is suitable for updating the existing rehabilitation robot and a robotic arm joint and beneficial for the upgrading of robots.

The present invention belongs to the field of precise machining technology, and is especially diamond turning method and apparatus for Archimedean spiral type Fresnel lens. The present invention has X axis ram on guide track on bed for X axis motion, Z axis ram on guide track on the X axis ram for Z axis motion, arced direct driving motor on Z axis ram for B axis motion, precise linear motor on the mover of the arced direct driving motor, and diamond cutter on the precise linear motor for W axis motion. During machining, the diamond cutter has the motion path as the synthesis of the X axis motion, the B axis motion and the W axis motion, and the work piece on the bench rotates around C axis, so that the diamond cutter moves along Archimedean spiral in the surface of the work piece. The present invention has continuous cutting, less damage of the cutter, short machining period and raised machining precision of Fresnel lens.

The invention provides a high-energy-efficiency cooperative area detection method for an unmanned ship. The method comprises the steps that an advancing mode based on an Archimedes spiral is adopted for the unmanned ship to serve as a main body movement mode in an area; regular hexagon-based sub-region division is carried out on the to-be-detected region, and an obstacle region and a free region are divided; and task area distribution is carried out on each unmanned ship, and respective advancing routes are planned. According to the invention, an advancing mode based on an Archimedes spiral isadopted, so that the unmanned ship always advances at a constant speed in a subarea detection process. According to the invention, regular hexagon-based sub-region division is carried out on the to-be-detected region, so that the unmanned ship has a relatively high coverage rate on the basis of Archimedes spiral advancing. The invention provides a task area distribution mode based on energy consumption balance, so that the task area size of each unmanned ship is equivalent to the greatest extent, and the energy consumption of the unmanned ship is ensured to be balanced as much as possible.

The invention discloses a motion track research device of points, comprising a transparent thin drawing board (1), a drawing pen clamp (2), a drawing pen (3), a relative rotating rod (4), an adjustable sliding chute (5), an adjustable motor (6), an absolute rotating rod (7), an adjustable sliding chute (8), an adjustable motor (9), a fixed bracket (10), a sliding block (11), a guide rod (12) and a linear displacement sensor (13). The motion tracks of straight lines, parabolas, circles (ellipses), folium, twisted-pair lines, cycloids, Achimedean spirals, cardioids and three-(four and five) leaf rose lines can be drawn by adjusting the positions of the adjustable motor (6) on the absolute rotating rod (7) and the relative rotating rod (4) and adjusting the rotating speed ratio of the adjustable motor (9) to the adjustable motor (6). The invention can be used for the demonstration and the experiment of the motion tracks of the points in the kinematic teaching.

A hybrid spiral waveguide geometry is proposed that exhibits essentially zero curvature (i.e., infinite bend radius) at the center of the spiral (similar to a Fermat spiral), with the curvature then increasing in value as the spiral moves outward. Advantageously, as the spiral moves away from the center, the spacing between adjacent waveguides quickly approaches a constant value (similar to an Archimedean spiral). This hybrid spiral structure has been found to allow for a high density waveguide to be created with lower loss and requiring a smaller size than many conventional spiral configurations and finds use in optical delay lines, amplifiers and arrayed waveguide gratings.

The invention discloses a manual pipe clamp, comprising a housing, clamping devices, a compass and a rocking bar, wherein the housing is composed of an upper shell and a lower shell; the upper shell is arranged on the lower shell; the compass is fixed on the lower shell; the upper shell is provided with three or more clamping tracks; the clamping devices are arranged on the clamping tracks; the clamping tracks are arranged on the upper shell in a radial manner; the upper surface of the compass is provided with a spiral track which is in the shape of an Archimedean spiral; a convex position is arranged at the lower end of each clamping device, and is clamped in the corresponding spiral track; gear lines are arranged on the lower surface of the compass; the rocking bar is arranged on the lower shell; and a bevel gear is arranged at one end of the rocking bar, and is meshed with the gear lines of the compass. The manual pipe clamp is provided with power by a manual operation, and gets rid of limits of power and an air compressor pump. Therefore, the manual pipe clamp is high in operability, and is less prone to a risk, the safety is greatly improved, an energy source is saved, and the manual pipe clamp is very suitable for small enterprises or processing workshops.

The invention relates to a negative magnetic permeability metamaterial comprising a dielectric substrate and a plurality of artificial micro-structures fixed on the dielectric substrate. The plurality of artificial micro-structures are formed by four Achimedean spirals embedded with a same spacing from inside to outside. Single artificial micro-structure being rotated by 90 degrees, 180 degrees and 270 degrees around a symmetric center coincides with the artificial micro-structure before rotation. In the negative magnetic permeability metamaterial, a frequency point of the negative magnetic permeability of the metamaterial can be changed by adjusting the turn number of a winding or scaling the size of the artificial micro-structure. Meanwhile, the artificial micro-structures of the metamaterial are symmetrical so that the response of the metamaterial to an electromagnetic wave in every direction is equal, and the negative magnetic permeability metamaterial is of significance in the development of a metamaterial industry and has good development prospects.

A 3D (three dimensional) printing process with laser beam scanning in archimedes spiral way comprises a laser and optical system, a turntable and guide rail guide frame system, a spindle motor and guide frame shift servo motor system, and a computer control system. A laser is mounted on a turntable laser disc or a turntable guide frame, or is mounted independently from a turntable, a laser beam is focused onto a printer working plane by a stationary reflector of turntable optical system and a reflector and a lens on the guide frame, or, a laser beam of a laser on the guide frame is focused onto the printer working plane by the lens; when the turntable is driven by a spindle motor to rotate in local constant angular velocity or constant angular velocity, and the guide frame is driven by a servo motor to move horizontally in constant velocity, omission-free and no-repeat archimedes spiral scanning of the laser beam on SLA, SLS, SLM and LOM printing working planes can be completed, and after layer-by-layer processing, a workpiece body is obtained. The printing process can realize no-distortion and high quality scanning of ultra large working planes and processing of ultra large workpieces, has the advantages of simple structure, low cost and excellent quality, is especially suitable for printing aerospace, aviation, electric power, marine, construction and other large complex workpieces.

Timepiece movement including a module fitted with a first wheel set meshing with a second wheel set, which pivots on a base on which the module is mounted. The movement includes a means of positioning the module formed by a cam, at least most of the periphery of which forms an Archimedes' spiral. The cam is arranged so as to allow the distance of centres between the first and second wheel sets to be adjusted, when the cam is rotated on itself about the centre of the Archimedes' spiral. The cam is preferably calibrated. The invention also concerns a method of adjusting the distance of centres between the two wheel sets using said cam to optimise the gearing efficiency of the two wheel sets.

The invention provides an Archimedes spiral-disc type expansion shaft capable of adapting to the inner diameter of diaphragm drum with different diameter in a large range. A shaft-diameter adjustmentknob, sliders and an expanding piece are arranged on an expanding-piece seat of the expansion shaft. The expansion shaft is characterized in that a spiral disc with a plurality of Archimedes spirals is adopted to replace a general typical structure of combining helices with inclined planes in the prior art to promote the movement of the expanding piece and realize the change of shaft diameter; asdiaphragms of each type have certain width, two sliders (5) in a front position and a back position are adopted to drive the expanding piece (6) together; the expanding piece (6) is allowed to move inparallel along the width of a diaphragm (8); and in order to guarantee the synchronous movement of the front and back sliders (5), the structure with double Archimedes spiral discs (2) is adopted.

The linear-to-rotary actuator includes an elongated drive member constrained to linear movement, and a rotary member constrained to rotary movement. The elongated drive member has a coupling end and an engaging member that projects from the coupling end. The rotary member has a track defining an Archimedean spiral. The track is adapted to receive the engaging member. The engaging member is constrained to slide in the track such that linear movement of the elongated member effects rotation of the rotary member. The track may be a slot, a groove, or other guide. Alternatively, instead of a track defined directly in the rotary member, the actuator may include a linking member (such as a disk or rectangular bracket) attached to the rotary member, the linking member having a track defining an Archimedean spiral defined therein, the engaging member being slidable in the track to convert linear motion into rotary motion.

The invention discloses a device for adjusting the diameter of a detector ring of a PET (positron emission tomography) system and solves the problem of complex structure and high cost of existing similar devices. The device comprises a fixed plate and a rotating plate, N slide grooves in radial spoke distribution are distributed around a center round hole of the fixed plate, and the surface of the rotating plate is provided with planar thread grooves which form the Archimedean spiral on the surface of the rotating plate. The rotating plate is fixedly suspended on the bottom surface of the fixed plate through a supporting wheel, and moving parts are mounted in the slide grooves of the fixed plate respectively and capable of radically moving along the slide grooves under the rotation action of the planar thread grooves. A connection plate is mounted on the surface of each slide groove of the fixed plate and connected with the corresponding moving part. When the device is in operation, a detector is mounted on each connection plate, and all detectors jointly form the detector ring. A motor drives the rotating plate to rotate so as to drive the detectors to move radically, and accordingly the diameter of the detector ring is changed. Compared with the existing similar devices, the device has the advantages of great structural simplification and cost reduction.

The invention relates to a valveless piezoelectric pump of an Archimedes helical flow pipe, and the valveless piezoelectric pump provided by the invention a pump body, a pump cavity, a piezoelectric vibrator, a first Archimedes helical flow pipe and a first communication groove, wherein the pump body consists of an upper cover and a lower cover; the pump cavity is arranged between the lower coverand the upper cover; the piezoelectric vibrator is contained in the pump cavity; the first Archimedes helical flow pipe and the first communication groove are arranged between the lower cover and theupper cover; one end of the first Archimedes helical flow pipe is connected with a fluid inlet arranged on the pump body, and the other end of the of the first Archimedes helical flow pipe is connected with the pump cavity; one end of the first communication groove is connected with the pump cavity; and the other end of the first communication groove is connected with a fluid outlet. The valveless piezoelectric pump disclosed by the invention has the advantages of simple structure and small flow resistance, is simple and convenient to install, can be produced in batches, is favourable for flow supply control and is especially suitable for transporting the fluid under the environment sensitive to a magnetic field.

The invention discloses an air returning type fan filter unit (FFU) below a ceiling. The air returning type FFU below the ceiling comprises a box body and a controller; an air returning opening is formed in the middle of the bottom surface of the box body; air outlets are respectively formed in the box body bottom surfaces at two sides of the air returning opening; material filtering units are mounted at the air returning openings through connecting structures; a centrifugal fan is mounted in the box body above each material filtering unit and is connected with a motor, wherein the motor is connected with the controller; a pair of volutes which is oppositely mounted on any group of diagonal angles of a rectangular area surrounding the centrifugal fan; the projection of the sidewalls of the volutes, opposite to the centrifugal fan on the level is in a form of a spiral of Archimedes. With the adoption of the air returning type FFU below the ceiling, the air returning structure is adopted, so that the applicable scope of FFU is expanded to some extent, and the limitation from the ceiling is avoided; the air flowing structure in the FFU is reasonable; the flowing resistance of liquid in the device is reduced, and thus the energy consumption is decreased.

The invention discloses an Archimedes spiral plate spring. The Archimedes spiral plate spring comprises a circular plate with a set base circle, and four vortex arms and four vortex grooves which arearranged on the plate around the base circle, and is characterized in that the four vortex grooves are symmetrically distributed at an angle of 90 degrees around the base circle; moulded lines of thevortex grooves are of closed structures; the central line of the moulded lines of the vortex grooves is determined by an Archimedes spiral equation, namely, r=a+b theta, wherein a and b are constants;a is used for regulating vortex line pole deviating distance; b is used for regulating moulded line expanding speed; r is a polar diameter; and theta is a polar angle. According to the Archimedes spiral plate spring, a novel Archimedes spiral line is constructed, the vortex grooves are distributed symmetrically, closed ends are of smooth transition, and the stress is dispersed by utilizing two arms of the plate spring, so that the stress is distributed on spring arms more uniformly; the spring reliability is improved; the radial rigidity is high and the axial rigidity is proper; and the moulded lines of the Archimedes spiral plate spring are easy to express and design, and are easy to machine.