34results about How to "Change pitch" patented technology

The invention discloses a photosensitive dopant, a preparation method thereof, a self-assembly system and a photoresponse device. The chemical structure of molecules of the photosensitive dopant is characterized in that 3,5-bi-(4-hydroxyphenylazo) benzoic acid is adopted as a base framework, a carboxyl terminal is connected with a chirality group, and a hydroxyl terminal is connected with a flexible chain. Under stimulation of external light, a photosensitive group- di-azobenzene with high ultraviolet absorption capability can achieve quick response and can be isomerized, quick isomerization of the chirality group in the structure and even the entire molecules is further induced, and the deformation index of the molecules is higher and quicker. In the self-assembly system of the molecules, rearrangement of the molecules in the system can be triggered more obviously, and physicochemical characteristics, like optimal and electrical characteristics, of the system are regulated.

The invention relates to a device for spiral superfinishing of a raceway of a bearing inner race. According to the device for the spiral superfinishing of the raceway of the bearing inner race, the output end of an oscillating shaft of a spatial connecting rod vibration oscillator is fixedly connected with a spline housing, a spline shaft which is matched with the spline housing is movably connected in the spline housing, the front end of the spline shaft is fixedly connected with an oilstone swinging head, the oilstone swinging head is connected with the spline housing through a tension spring, a push rod is arranged in the oscillating shaft in a penetrating mode, the front end of the push rod penetrates out of the front end of the oscillating shaft to be in contact connection with the spline shaft, and the rear end of the push rod penetrates out of the rear end of the oscillating shaft to be connected with a pushing device with the stroke and speed adjustable. According to the device for the spiral superfinishing of the raceway of the bearing inner race, the lead angle and screw pitch of spiral motion can be changed by adjusting the oscillating angle of the oscillating shaft and the eccentricity of an eccentric cam or the movement amount of the electric push rod; the speed and oscillating frequency of the spiral motion can be changed by adjusting the rotating speed of a driving device of a speed regulating motor of the spatial connecting rod vibration oscillator and a speed regulating motor of the pushing device with the stroke and speed adjustable or the pushing speed of the electric push rod, superfinishing surface roughness of raceways of different bearing inner races is improved, and waviness is reduced.

The invention discloses a composition, a color film basal plate, a display panel, a display device and a production method of the color film basal plate. The composition disclosed by the invention comprises the following components in parts by weight: 30-65 parts of a nematic liquid crystal, 6-35 parts of a chiral additive, 5-34 parts of a photopolymerization monomer and 0.01-0.1 part of a photoinitiator. The production method of the color film basal plate, disclosed by the invention, comprises the following steps of forming a composition layer, forming a filter region and performing ultra-violet curing. The invention further discloses the color film basal plate produced by the production method disclosed by the invention, the display panel comprising the color film basal plate, and the display device comprising the display panel.

The invention discloses a driving device for domesticated sheep. The device comprises an external supporting mechanism used for external throwing out, an airflow whistle blowing mechanism used for airflow flowing whistle blowing, a magnetic whistle blowing mechanism used for changing whistle sounds through magnetic movement and an electrostatic generation mechanism used for electrostatic generation. A shell is mounted in the external supporting mechanism, the airflow whistle blowing mechanism is arranged in the external supporting mechanism through the arranged shell, the outer wall of the airflow whistle blowing mechanism is fixedly connected with the electrostatic generation mechanism, and the magnetic whistle blowing mechanism is arranged at the end, away from the airflow whistle blowing mechanism, of the inner wall of the shell. Through the arrangement of a spiral telescopic rod, the shell can be suddenly thrown out, when the shell is closer to the sheep, a strong frightening effect is achieved, sheep driving is ensured, an arc-shaped rod moves on an arc-shaped rolling wheel, a first blocking plate can stretch out and draw back, the made sound is changed, the sheep is preventedfrom having the habit to sound, and sheep driving is ensured.

The invention discloses a mount telephone and method for downloading bell or music from internet. The invention includes a primary control unit, a MIDI chip, a memory unit, a voicing device, an interface unit, a dialing unit, a hanger, bell measuring unit, a communication control unit, a system state indicating lamp. The invention can download music and bell form the internet to mount telephone device through the editing and playing function of MIDI chip to music data. The invention also discloses the method.

The invention discloses a foldable variable-pitch propeller for a fixed-wing unmanned aerial vehicle, and relates to the technical field of unmanned aerial vehicles. The foldable variable-pitch propeller comprises a shell, a cavity is formed in the shell, bearings are embedded in the two sides of the shell, the bearings are symmetrically distributed relative to the shell, and the bearings are parallel to each other; propeller clamps are installed on the two sides of the shell in a matched mode, and the two sets of propeller clamps are coaxial; the two ends, close to each other, of the two setsof propeller clamps penetrate through the bearing and extend into the cavity, and clamping grooves are formed in the two ends, away from each other, of the two sets of propeller clamps in the axial direction; and blades are hinged into the clamping grooves in a matched mode. The foldable variable-pitch propeller is novel in structure and simple and reliable in structure, and the problem that thefixed-pitch blades have adverse effects on the flight performance of the fixed-wing unmanned aerial vehicle is effectively solved.

The invention relates to a photoisomeric chiral molecule and application thereof in realizing patterning of a color liquid crystal film, and relates to the technical field of liquid crystal films. The preparation method of the photoisomeric liquid crystal film comprises the following steps: heating a liquid crystal monomer and a chiral dopant in a solvent under the action of a photoinitiator to react completely, coating the surface of the film with the reaction product, drying the film, and illuminating the film to obtain the photoisomeric liquid crystal film, the chiral dopant is a photoisomerization chiral molecule. The preparation method of the photoisomerization liquid crystal film is simple, convenient to operate and low in raw material consumption, and the prepared photoisomerization liquid crystal film is stable in performance.

The invention discloses a kind of fixed telephone device which can uploads music or bell. It includes: a primary control unit, a voice interface unit, a voicing device, the device further includes a wireless interface unit; it can receive the wireless signal from the mobile communication terminals according to the interface protocol and carries on modulation conversion; a memory unit which can carry on data access under control of primary controller; a MIDI chip, which can reads music data from the memory unit under control of the primary controller and edit the data, the edited data are transmitted to the voicing device to be played; by using the device, the user can receive the music file transmitted from the mobile communication terminal of wireless interface, and uses it as the call music of fixed telephone; the invention also discloses the method.

The invention discloses a signal auxiliary enhancement device for an information system, which comprises a protective shell, a small helical antenna and a large helical antenna, one side of the protective shell is connected with a support plate, a turntable assembly is mounted at the center of the support plate, a telescopic sleeve is mounted in the protective shell, and the telescopic sleeve is sleeved with the large helical antenna. The telescopic sleeve is internally connected with a telescopic rod, the end part of the telescopic rod is provided with a small helical antenna connecting plate, and the telescopic rod is sleeved with a small helical antenna; the small helical antenna and the large helical antenna have the capability of receiving two groups of electromagnetic waves, so that the screw pitches of the small helical antenna and the large helical antenna can be changed when the telescopic rod and the telescopic sleeve are retracted, and the helical antennas have the capability of receiving multiple electromagnetic waves during miniaturization design; and the signal auxiliary enhancement equipment can be adjusted to a proper electromagnetic wave receiving elevation angle.

The invention provides a preparation method of a nano cellulose composite film capable of responding to humidity and an obtained product. The preparation method comprises the following steps: (1) preparing nanocellulose crystals and water into a suspension according to a ratio of 1: (50-80), mixing the suspension with 1, 3-butanediol BG according to a ratio of 1: (8-12), uniformly stirring the mixed suspension, and performing ultrasonic treatment; and (2) putting the suspension treated in the step (1) into a drying container, and naturally standing, evaporating and drying at the temperature of 20-30 DEG C and the humidity of 30-40%. According to the nanocellulose composite film provided by the invention, due to the addition of exogenous additives, the film becomes smoother, the thermal stability is higher, and the film has humidity response performance.

A variable pitch system for a water or wind turbine includes a hydraulic system that includes a first hydraulic system (90) and a second, redundant hydraulic system (92) that are completely contained in a nose region of the turbine. The first and second hydraulic systems (90, 92) can each be used during operation on a predetermined operating schedule. In addition, each of the first and second hydraulic systems (90, 92) can also include a pressure relief valve to limit back pressure on the hydraulic system from dynamic loads on the turbine blades. The pitch of all the blades (34) are changed simultaneously using a common linear to rotary actuating mechanism. To aid in cooling, the hydraulic reservoirs (100) for the first and second hydraulic systems (90, 92) can be attached to the front wall of the nose housing (40), and fins (120) can be provided on the exterior of the nose housing (40) at the front end to enhance heat extraction.