112results about How to "Large deflection angle" patented technology

There is disclosed a light deflector in which both ends of a movable plate is supported to a support substrate by an elastic support portion, a reflection surface is formed on one surface of the movable plate, and the movable plate is torsion-oscillated about a torsion axis of the elastic support portion as a center to deflect an incident light that enters the reflection surface, wherein a recessed portion is formed on at least one side surface of both sides, which is a surface on which the reflection surface is not formed, and between which the torsion axis of the elastic support portion is interposed.

The invention discloses a seven-degree-of-freedom transfer robot provided with a ball screw movable platform and belongs to the technical field of robots. The robot comprises a machine frame, an upper movable platform, a lower movable platform, a ball screw, a synchronous belt and three branches. Each branch comprises a large driving arm, a small driving arm, a driving arm connecting rod, a lining frame and a driven arm, wherein the upper end of the driven arm is connected with the lower end of the lining frame; the lower end of the driven arm is connected with the upper movable platform; a screw nut is fixedly connected to the upper movable platform; a synchronous pulley is installed at the upper end of a screw shaft; and the lower end of the screw shaft is connected with the lower movable platform. The robot is based on a six-axis transfer parallel robot, one degree of freedom is additionally added by transforming and upgrading the movable platforms, the lower movable platform deflects by a certain angle based on the upper movable platform, thus, the deflection angle of a tail end execution mechanism is increased, and the problem that the robot is limited in the actual motion process, and accordingly the deflection angle of the tail end execution mechanism is small is solved. The robot provided by the invention is larger in application range and better meets the practical requirements.

A portable temporary righting device for inclination of a power transmission line pole and tower comprises a rack, a line collecting reel is installed on one side of the rack, a rope is wound around the line collecting reel, a line clamping groove is formed in one end of the line collecting reel, and a ratchet wheel mechanism is arranged at the other end of the line collecting reel, wherein the ratchet wheel mechanism and the line collecting reel coaxially rotate. Pawls and reversing deflector rods are arranged on the rack. A guiding pulley is installed on the other side of the rack, a conical shaft and big gears are installed on the rack and rotate coaxially, and the big gears and a gear set are assembled in a meshed mode. A balance weight disc connected with the gear set is installed on the rack and connected with a pedal through a connecting rod, and the balance weight disc, the connecting rod and the pedal form a crank and rocker mechanism. The portable temporary righting device can temporarily right the pole and tower and prepare time for permanent reinforcement of the pole and tower; operation can be achieved only through manpower, and the portable temporary righting device is applied to finding inclination of the pole and tower in time and temporarily righting the pole and tower in time, and also suitable for pole and tower emergency maintenance engineering in remote mountain regions or pole and tower emergency maintenance engineering where the pole and tower in inclination can not be temporarily righted unless depending on labor.

The invention discloses a trapezoid spherical surface deflection lorentz force magnetic bearing composed of a rotor system and a stator system. The rotor system mainly comprises an outer flux sleeve, an outer magnetism isolation ring, outer upper trapezoid spherical surface magnetic steel, outer lower trapezoid spherical surface magnetic steel, an outer upper paramagnetic sleeve, an outer lower paramagnetic sleeve, an outer upper trapezoid spherical surface magnetic steel lock nut, an outer lower trapezoid spherical surface magnetic steel lock nut, a rotary disc, an outer assembly lock nut, an inner flux sleeve, an inner magnetism isolation ring, inner upper trapezoid spherical surface magnetic steel, inner lower trapezoid spherical surface magnetic steel, an inner upper paramagnetic sleeve, an inner lower paramagnetic sleeve, an inner upper trapezoid spherical surface magnetic steel lock nut, an inner lower trapezoid spherical surface magnetic steel lock nut and an inner assembly nut. The stator assembly mainly comprises a stator framework, an aluminum base plate, a winding and an epoxy resin adhesive. The trapezoid spherical surface structure is adopted in the magnetic steel, the fringe effect of the magnetic field is weakened, the magnetic flux density uniformity is improved, the strength of the magnetic field is improved, and large-angle deflection is facilitated; and in addition, the magnetic flux density fluctuation of the magnetic steel due to splicing gaps is eliminated through the paramagnetic sleeves, and high-precision torque control is facilitated.

The invention discloses a double-period composite liquid crystal polarization grating structure and a preparation method thereof, belongs to the technical field of non-mechanical optical beam deflection in an active electro-optical system, and mainly aims at problems of serious energy loss, complex structure and the like of a conventional liquid crystal polarization grating, which are caused by acase that incident light needs to be converted into circular polarized light. The double-period composite liquid crystal polarization grating is disclosed on the basis of in-depth understanding on a polarization state modulation type optical component and has excellent response to linearly polarized incident light, and an optical beam is deflected to the plus 1 level and the minus 1 level under the diffraction efficiency of nearly 100% only by controlling a polarization direction of the linearly polarized incident light. Compared to the conventional liquid crystal polarization grating implemented before, the double-period composite liquid crystal polarization grating structure is simpler in the aspects of system control and assembly and judgment and is obviously promoted in the aspects ofthe energy utilization rate and the like.

The embodiment of the invention discloses a display assembly and a display device, relates to the technical field of display, and aims to solve the problem that the liquid crystal efficiency in an auxiliary liquid crystal box is reduced. The display assembly comprises a first underlayer substrate, a second underlayer substrate and a second liquid crystal layer, wherein the first underlayer substrate and the second underlayer substrate are oppositely arranged, and the second liquid crystal layer is located between the first underlayer substrate and the second underlayer substrate; a third underlayer substrate located on the side, away from the second underlayer substrate, of the first underlayer substrate; a first liquid crystal layer located between the first underlayer substrate and the third underlayer substrate; a first pixel circuit layer arranged on one side, close to the first liquid crystal layer, of the first underlayer substrate; a second pixel circuit layer arranged on one side, close to the second liquid crystal layer, of the second underlayer substrate; a polarizing device arranged on one side, far away from the second liquid crystal layer, of the second pixel circuit layer; and a first metal wire grid polaroid arranged between the first substrate and the first pixel circuit layer.

The invention relates to a micro electromechanical device (1') for tilting a body (2) in two degrees of freedom comprising a carrier element (3) and a membrane (4), the body (2) being connected via the membrane (4) to the carrier element (3), wherein the body (2) and the carrier element (3) each comprise at least one electrode (5,6). The body (2) is tilted by means of electrostatic forces (7) between the at least one electrode (5) of the body (2) and the at least one electrode (6) of the carrier element (3) by an application of a voltage (V1,V2) to said electrodes (5,6) from a voltage source.

A rubber pad for coil springs in series comprises a metallic top plate, an elastic rubber body and a metallic base plate from top to bottom, wherein a metallic ring is fixed to the center of the top surface of the metallic top plate and is used for positioning the coil springs; the portion, connected to the elastic rubber body, of the bottom surface of the metallic top plate is an upper arc surface which is upwards concave; the portion, connected to the elastic rubber body, of the top surface of the metallic base plate is a lower arc surface which is upwards convex; the upper arc surface and the lower arc surface are coaxial arc surfaces arranged along the horizontal lengthwise direction of the rubber pad; the axial direction of the upper arc surface and the lower arc surface is in accordance with the horizontal widthwise direction of the rubber pad; and the perpendicular bisectors of the upper arc surface and the lower arc surface and the perpendicular bisector of the rubber pad coincide. The rubber pad for the coil springs in series of the invention is connected with the coil springs in series to form a composite spring system to meet the dynamics requirements of locomotive vehicles and prolong the service life of the coil springs. The invention also provides a method for adjusting the stiffness of the rubber pad for the coil springs in series.

Disclosed is ammunition with a head capable of deflecting and based on a smart material driver. The ammunition with the head capable of deflecting and based on the smart material driver comprises an ammunition head, an ammunition body, a smart material driver and a positioning system. The main body part of the ammunition is connected with a spherical protrusion of the surface on the upper end of the ammunition body through a spherical groove at the bottom of the ammunition head; four guide grooves are formed at the bottom of the ammunition head, wherein the guide grooves penetrate through the center of the circle of the ammunition head and are communicated with the spherical groove; sealing pins, springs and rolling balls are placed in the guide grooves to fasten connecting portions; under the impact of certain electrical signals, the smart material driver is deformed through information fed back by the positioning system to put the ammunition head to deflect, and therefore changing of motion locus of the ammunition is achieved. The ammunition with the head capable of deflecting and based on the smart material driver is large in deflection angle and is finally wide in attack ranges, reduces consumption of smart materials, saves space capable of placing a microprocessor and a small-size power supply, is compact in the whole structure, and therefore achieves microminiaturization, high accuracy and low energy consumption of independent and self-adaptation attack ammunition.

The invention discloses a displayer using ferroelectric liquid crystals. The displayer using ferroelectric liquid crystals comprises a backlight module, a first substrate, a plurality of long-strip-shaped first electrodes, a second substrate, a liquid crystal layer and a deflection layer. Light emitted by the backlight module deflect relative to the surface of the backlight module. The first substrate is arranged on the backlight module, and a first polarizing plate is arranged on the upper side face of the first substrate. The long-strip-shaped first electrodes are parallel with one another and arranged on the first substrate in a coplanar mode. The second substrate is arranged on the first substrate and the first electrodes, a second polarizing plate is arranged on the lower side face of the second substrate, and the absorption axis of the first polarizing plate and the absorption axis of the second polarizing plate are perpendicular to each other. The liquid crystal layer is composed of the ferroelectric liquid crystals and arranged between the first substrate and the second substrate, and the ferroelectric liquid crystals are perpendicularly arranged on the first substrate in a matched mode. The deflection layer is arranged on the second substrate and used for deflecting the light which is emitted by the backlight module and affected by the liquid crystal layer to the direction perpendicular to the surface of the second substrate.

The invention discloses a cutting knife guard plate assembly, an anastomat and a steering control method. The cutting knife guard plate assembly comprises two cutting knife guard plates which are positioned on two sides of a central axis and have two opposite arc-shaped structures with corresponding recessed inner surfaces to form space allowing a cutter handle of the cutting knife assembly to move along the central axis and/or deflect relative to the central axis; and the two cutting knife guard plates respectively deflect relative to the central axis when one cutting knife guard plate moves toward the near end of the anastomat and the other cutting knife guard plate moves toward the far end of the anastomat, the knife handle is bent, and the part, protruding toward one side due to bending, of the knife handle is attached to the inner surface of the cutting knife protection plate on the corresponding side. Compared with an existing anastomat, the anastomat provided by the invention has the advantages that the rotating angle is larger, and the anastomat is more stable during deflection.

The invention relates to the technical field of MEMS light modulators, in particular to an MEMS blazed grating light modulator and an array. The shutter type MEMS large-rotation-corner adjustable blazed grating light modulator comprises a silicon substrate, an insulating layer, a movable frame, flexible beams, a grating mirror plane, double-layer comb tooth drive structures, an elastic cantilever beam, a bias voltage exerting device and a plurality of columns, wherein the insulating layer, the movable frame, the flexible beams, the grating mirror plane, the double-layer comb tooth drive structures, the elastic cantilever beam, the bias voltage exerting device and the columns are arranged on the silicon substrate. One side of the grating mirror plane is fixed to the surface of the substrate through supporting beams and two of the columns, and the other side of the grating mirror plane is connected with the movable frame through a deformation beam and driven by the double-layer comb tooth drive structures. The bias voltage exerting device can exert drive voltages at different levels and different frequencies between movable teeth and fixed teeth, and therefore the movable teeth can deflect and move to drive the movable frame, and the movable frame pulls the grating mirror plane to defect through the deformation beam. Due to the structure, an MEMS blazed grating has the advantages of being large in rotation angle, adjustable in continuous analog, good in controllable capacity, high in diffraction efficiency, high in tuning efficiency and capable of preventing adhesion failure.

The invention provides a vertical support stress uniform distribution device for building reinforcement engineering, and relates to the technical field of building construction. The device comprises a lower mounting seat; wherein lower mounting seat is mounted on a base plane through expansion bolts; a supporting body which is connected to the upper end face of the lower mounting base in a fastened mode through an adjustable fastening assembly; a protection assembly which is installed at the top of the supporting body, and the protection assembly is located on the outer side of the stress uniform distribution core block; and an auxiliary supporting assembly which is arranged at the top of the supporting main body. The vertical support stress uniform distribution device can effectively protect a matching surface, guarantees good angle adjusting capacity, can observe and monitor the deflection condition of an upper mounting seat, has good supporting capacity and adjusting capacity, is convenient to use and simple to operate, has higher working stability and practicability, and solves the problems that a traditional supporting device cannot well protect the spherical matching surface, the deflection condition of the support is difficult to effectively observe and monitor, so that the deflection of the support is too large.

A microactuator arrangement for the deflection of electromagnetic radiation, with a mirror plate which is suspended on a drive frame in a movable manner about a first rotation axis via spring elements, wherein the drive frame is suspended on a chip frame in a movable manner about a second rotation axis via spring elements, wherein the drive frame is not closed and comprises a recess adjacent to the mirror plate and wherein the chip frame at least in the region of the recess of the drive frame is not closed, in a manner such that a deflected and/or incident beam is not inhibited by the drive frame and the chip frame.

The invention discloses a movable platform mechanism with a ball screw connected with a gear and a rack in series, and belongs to the technical field of robots. A motor support is arranged in the center of an upper movable platform. A driving device is installed on the motor support. One synchronous pulley is installed at the end of a motor shaft, and the other synchronous pulley is connected with the inner circle of a screw nut. The two synchronous pulleys are matched with a synchronous belt. The screw nut is fixed to the upper movable platform and matched with a screw. The lower end of the screw is fixedly connected with an end-effector. The lower end of the end-effector is connected with a screw connection rod through a first hooke joint. The lower end of the screw connection rod is connected with a gear and rack mechanism. The upper end of the rack is connected with the screw connection rod. The lower end of the rack is matched with the gear. According to the movable platform mechanism, a traditional single movable platform of a parallel robot is improved, accordingly, the deflection angle of the end-effector is increased, the problem that the deflection angle of the end-effector is small due to the fact that the parallel robot is limited in the actual moving process is solved, thus, the application range of the robot is widened, and the requirements of plants are better met.

The invention relates to the field of agricultural machinery, in particular to a lycium chinense picking vehicle, which comprises a picking vehicle body, a branch supporting device, a picking device, a collecting plate, a conveying system, a winnowing machine and a loading box. The branch supporting device is arranged at the head part of the picking vehicle body and used for guiding branches at the head part of the picking vehicle body in the driving process of the picking vehicle body. The picking device can continuously harvest fruit-bearing branches on one side of a row of plants at a time by arranging a vibration comb brush capable of continuously performing harvesting operation, and a vibration generator serves as a vibration source to provide excitation force, so that high-frequency vibration in the axial direction and the horizontal direction is generated. According to the lycium chinense picking vehicle, the full picking rate can be improved by reasonably controlling and adjusting the amplitude and frequency of the vibration comb brush device, the vibrating frequency is accurately controlled to adapt to picking of lycium chinense of different varieties or different maturity degrees, the damage rate and the impurity rate are reduced, the picking device can rotate after touching branches, and therefore, resistance generated by the branches is resolved, and continuous harvesting is achieved.