187results about How to "Achieve deflection" patented technology

The invention discloses a vector propulsion mechanism of an underwater robot. The vector propulsion mechanism is a novel spherical parallel connection mechanism and comprises a static platform and a movable platform. Four groups of kinematical branch chains are formed between the movable platform and the static platform, two groups of kinematical branch chains include a group of branch chains RP<C> and a group of branch chains RP<C>RU and are driving branch chains, each group of driving branch chains comprises a curved movement pair PC which is of an arc-shaped groove sliding structure, the other two groups of kinematical branch chains comprise branch chains RP<C> and branch chains RP<C>RU, are structurally identical to the former two groups of kinematical branch chains but are driven branch chains, the four groups of kinematical branch chains are symmetrically installed, and the four groups of kinematical branch chains, the movable platform and the static platform jointly form the spherical parallel connection mechanism with two degrees of freedom. A group of intermediate kinematical transfer branch chains RUC is additionally arranged between the static platform and the movable platform and is used for transferring torque and movement of a main propulsion motor to a propeller. The vector propulsion mechanism has the advantages of convenience in installation and control, good low-speed steering performance and the like.

The present invention provides a workpiece three-dimensional dimensions automatic detection system and method based on laser scanning. The system comprises a three-dimensional moving platform, a three-dimensional moving platform numerical control module, a laser scanning sensor, a laser scanning sensor numerical control module, a laser scanning sensor rotating mechanism, a power module and detection software, and belongs to the technical field of three-dimensional scanning and digital analysis. According to the system, the numerical control three-dimensional moving platform is used, so that total dynamic measurement is implemented, manual movement detection is replaced, and detection efficiency is improved; a pneumatic floating slideway is used, so that movement precision is improved; thelaser scanning sensor rotating mechanism is assembled on a Z-axis pneumatic floating slideway, so that deflexion of the laser scanning sensor can be implemented, and a workpiece is scanned from different angles; and a blue line sweeping laser scanning sensor is selected, so that anti-interference is strong, and measurement precision is high.

The invention discloses a double ducted-propeller electric manned aircraft capable of taking off and landing vertically, and belongs to the field of aviation products. The aircraft comprises an aircraft chamber, double ducted-propeller power systems and a control platform, wherein lateral wings with vertical planes are fixedly and integrally arranged on two sides of the aircraft chamber; the ducted-propeller power systems are arranged at the front end and the rear end of the aircraft chamber and are connected with the lateral wings respectively; a self-balancing mechanism is arranged on the lateral wing on one side; a duct rotating mechanism is arranged on the lateral wing on the other side; the self-balancing mechanism and the duct rotating mechanism are both connected with the ducted-propeller power systems; and the control platform and a battery pack are arranged in the aircraft chamber. The invention further provides a realization method for the aircraft, which adopts the rotation of propellers to generate pushing force, realizes left and right automatic balancing as well as forward and backward rotation of ducts by matching the self-balancing mechanism and the duct rotating mechanism, realizes the vertical taking off, landing and advancing of the aircraft by combining the wing-type streamline design of the aircraft chamber, makes full use of the efficiency of a motor, saves energy and is safer.

The invention discloses a phased array ultrasonic testing method for a butt weld of a TMCP steel plate, and belongs to the technical field of non-destructive testing of a quality control system. A testing system of the butt weld of a TMCP steel plate with a wall thickness below 25mm is formed by a phased array ultrasonic detector, a phased array operating system, a high frequency linear array shear wave probe and a calibration test block to realize detection of welding defects of the butt weld. Due to the anisotropic characteristics of TMCP steel, when phased array ultrasonic wave is used to detect the butt weld, a special method is needed to calibrate the testing system and correct test results to achieve accurate detection. The phased array ultrasonic testing method just overcomes the above shortcomings, and the phased array ultrasonic testing method is high in on-site detection efficiency and accurate in results, and has good implementability.

The invention discloses a laser phased array multi-beam forming system and method. The system specifically comprises a laser, a polarization splitting prism, a beam expander, a first liquid crystal optical phased array, a 4f optical system and a second liquid crystal optical phased array. An outgoing laser beam of the laser sequentially passes through the polarization splitting prism, the beam expander, the first liquid crystal optical phased array, the 4f optical system and the second liquid crystal optical phased array; the mode of cascading the two liquid crystal optical phased arrays is adopted for achieving forming and deflection of any multi-beam, one phased array is adopted as an amplitude modulator, the other phased array is adopted as a phase modulator, and the 4f system is used for precisely aligning phase shifting units of the two phased arrays. The mode of precise control over the amplitudes of the liquid crystal optical phased arrays and phase modulation is adopted, and forming and random pointing of any number of wave beams can be achieved.

The invention presents a recyclable airplane model experimental facility capable of changing an appearance and a parameter. The recyclable airplane model experimental facility comprises a bracket structure used for supporting an airplane model, a plane body structure with variable length, a plane body outer shell cowling, and a control box; the bracket structure used for supporting the airplane model comprises a lower bracket, an electric motor, a hydraulic actuator cylinder and an upper bracket; the plane body structure with the variable length comprises a middle grid trough beam, a front grid trough beam, a rear grid trough beam, a plane body balance and a spoiler grid trough beam. By adopting the airplane model experimental facility, length of the front plane body can be changed by adjusting an installing position of a card between the front grid trough beam and the middle grid trough beam; the length of the rear plane body can be changed by adjusting the position of installing the rear grid trough beam on the spoiler grid trough beam, thus the change of the plane body length of the airplane model can be realized. Through mounting the plane body cowlings with different appearances and layouts at the outer part, different airplane experimental models can be structured.

The invention discloses a lens for a linear light source (5) and an illuminating device capable of realizing asymmetrical light distribution and provided with the lens. The bottom of the lens comprises an incident surface (1) as well as a first supporting surface (41) and a second supporting surface (42) which are located on two sides of the incident surface (1) respectively; the top comprises an outgoing surface (2) and a total internal reflection surface (3); the total internal reflection surface (3) comprises a first total internal reflection surface (31) and a second total internal reflection surface (32); a first part of light rays of the linear light source (5) is emitted to the incident surface (1) and exits after being refracted by the outgoing surface (2), a second part of light rays of the linear light source (5) is emitted to the incident surface (1) and exits after being subjected to total internal reflection by the first total internal reflection surface (31) and then being refracted by the outgoing surface (2), and a third part of light rays of the linear light source (5) is emitted to the incident surface (1) and exits after being subjected to total internal reflection by the first and second total internal reflection surfaces (31 and 32) sequentially and then being refracted by the outgoing surface (2).

The invention discloses a high-frequency ultrasonic online monitoring method for internal defects of a metal movable molten pool. The high-frequency ultrasonic online monitoring method comprises the following steps: providing N focusing points of different depths along the center line of the molten pool, obtaining the emission angle thetas of an ultrasonic beam according to the relationship between the focusing points and an incident point in order to obtain N groups of fiber array delay rules corresponding to the focusing points of all angles; exciting a laser according to a delay rule corresponding a first focusing point F1 to realize the incidence of the ultrasonic beam focused at a point N1, and sampling; replacing the delay rule, and exciting the laser according to a delay rule corresponding to a next focusing point F2; repeating the previous steps to finally obtain signals of all focusing points Fi; when a spray nozzle moves to a next position, repeating the previous data acquisition and storage step; starting to analyze data of M positions collected on a straight line; performing drawing analysis on a two-dimension matrix, wherein one or more crescentic ultrasonic signals, namely, diffraction signals of slag inclusion or pores are found in an image rating range.

The invention relates to an optical beam deflecting and purifying device based on a random paralleling optimal algorithm. The device controls optical beam deflection and simultaneously achieves optical beam purification by utilizing a deformed reflecting mirror as an optical beam control device. In the random paralleling optimal algorithm, target light intensity distribution is taken as an evaluation function; optical beam positional information and optical beam quality information are taken as an identical criterion; and closed loop control is conducted to the deformed mirror according to a criterion provided in an optical beam quality evaluation system, so that the criterion of the optical beam positional information and the optical beam quality information achieves an extreme value, thereby simultaneously achieving the optical beam defection and the optical beam purification.

The invention relates to a vehicle lock possessing an adjusting element assembly, wherein, the adjusting element assembly(1) is equipped with a driving motor(2) and a pivotable or rotatable adjusting element(4) connected behind the driving motor(2); wherein, the adjusting element(4) is designed to be a control shaft which possesses at least one axial control part(5) used for leading out control movement and an operation part(6) which is equipped with at least one worm outline bodies(7, 8) and an operation element(9) and is used to operate the control shaft(4) manually. The operation element(9) is cooperated with the worm outline bodies(7, 8). The vehicle lock is characterized in that the operation element(9) guides lengthways on a geometrical axis(4a) of the control shaft(4) and is cooperated with the operation part(6), so that the lengthwise movement of the operation element(9) can be transformed into a pivotable or rotation movement of the control shaft(4) around the geometrical axis(4a).

The invention belongs to the technical field of wireless communication and discloses a multi-wave-beam antenna system which comprises a Butler matrix, a phase compensation circuit and at least first numerical value of multi-wave-beam antenna units. The Butler matrix comprises a first numerical value of output ends, the phase compensation circuit comprises a first numerical value of input ends and a first numerical value of output ends, each output end of the Butler matrix is connected with the corresponding input end of the phase compensation circuit, and each output end of the phase compensation circuit is connected with one multi-wave-beam antenna unit. The phase compensation circuit is added in the multi-wave-beam antenna system, and integral deflection of multiple wave beams formed by the Butler matrix can be realized, so that wave beams directing right ahead are formed.

The invention discloses a laser radar scanning galvanometer three-dimensional angle measuring device and method, and belongs to the field of angle measurement. The device comprises a laser, a collimating lens, a beam splitter prism, a scanning galvanometer, a focusing lens and a laser spot detector. The scanning galvanometer is a specially-made galvanometer with a special structure, the front surface of the scanning galvanometer is a coated reflector, and the rear surface of the scanning galvanometer is coated with a reflective diffraction grating. The collimated laser beam irradiates a reflective diffraction grating on the rear surface of the scanning galvanometer. The zero-order diffracted light beam and the positive-order diffracted light beam are reflected at different angles and transmitted through the light splitting prism and the focusing lens, and irradiating to the two laser spot detectors in parallel, and the displacements of the zero-order diffraction spots and the positive-order diffraction spots on the two laser spot detectors are calculated to obtain the deflection angles of the scanning galvanometer in three dimensions.

The invention discloses a pico-second laser combined machining SLM device. The pico-second laser combined machining SLM device comprises a bearing platform used for placing components and parts, a sealing cabin is arranged on the bearing platform, a galvanometer unit is arranged on the upper portion of the sealing cabin, and the galvanometer unit is connected with a pico-second laser and an ordinary laser through a laser beam processing unit. The invention further provides two laser rapid prototyping methods using the pico-second laser combined machining SLM device. The laser rapid prototyping methods comprise the steps that a three-diamensional model of a part is subjected to hierarchical slicing, and a two-dimensional model of each layer is subjected to main body sintering first and then contour sintering. The problems that the working process of a SLM device in the prior art is complex, the precision of the surface treatment of the part is not high, so that the later additional handling work of the part is tedious, and the labor is consumed are solved.

The invention discloses an automatic nursery stock cuttage device. The automatic nursery stock cuttage device comprises a movable vehicle body which stretches across a seeding bed, and a conveying mechanism, a discharge device and a cuttage device which are arranged on the vehicle body. The vehicle body comprises four supporting legs symmetrically arranged on the left side and the right side, andsupports for connecting the adjacent supporting legs. A rotatable gear is arranged between the two supporting legs on each side. The gears are meshed with racks on the two sides of the seedling bed and each connected with a driving motor. The conveying mechanism comprises material conveying cylinders, a conveying belt and material pushing cylinders in sequence from front to back. The material conveying cylinders are fixed to a supporting plate side by side. The discharge device is arranged above the conveying belt and comprises a discharge hopper and a vibrating motor. The automatic nursery stock cuttage device has the advantages of being complete in automation, high in efficiency, consistent in cuttage depth and capable of keeping the vertical state after cuttage.

The invention provides an all-optical solid streak camera which solves the technical problem that large measurable dynamic range and measurable time span are difficult to realize simultaneously in the prior art. The picosecond all-optical solid streak camera with large dynamic range comprises an optical coupling system, an optical deflector and a pump light system and a reading system, wherein the optical deflector comprises an optical waveguide, and if pump light goes into the optical waveguide along vertical direction, then signal light passes through the optical waveguide along horizontal direction and is collected and read by the reading system. A functional layer of the light waveguide is an AlGaAs/GaAs/AlGaAs sandwich structure, the middle core layer is a signal light channel, and a saw-toothed pump light mask used for processing the pump light to form a light prism array in the core layer is arranged on the pump light incidence end face of the covering layer. The invention breaks through the traditional image converter tube streak camera technology based on photoelectric conversion. Meanwhile, an important scientific basis and theoretical basis is also provided for developing and pluralizing the all-optical solid streak camera technology.

The invention discloses a satellite communication antenna test rotary table, and relates to the field of satellite communication equipment, the satellite communication antenna test rotary table comprises a test rotary table support assembly, and the test rotary table support assembly comprises a base, a rotary table, a deflection support and an antenna mounting plate. Under the transmission of the transmission assembly arranged in the driving box and the effect of the clutch assembly on power separation, deflection and rotation separation adjustment of the antenna mounting plate can be realized, the arrangement of a power source is saved, and the production cost is reduced; under the guidance of the deflection guide rail of the deflection bracket and the guide wheel of the guide wheel bracket, the antenna mounting plate fixed on the deflection bracket can perform pitching deflection of 0-60 degrees, and the deflection adjustment process of the antenna mounting plate is more stable.

The invention discloses a wall washing lens with the high utilization rate. The wall washing lens comprises a first refraction and reflection system, a refraction system and a second refraction and reflection system which are sequentially connected. According to the wall washing lens with the high utilization rate, deflection of light rays is achieved under the condition of not adding a lens material. By the adoption of the wall washing lens with the high utilization rate, the common bottom dark region in the wall washing effect can be eliminated, and the uniformity of illuminance is increased by 70% or above; the lens is designed according to the actual wall washing height, and the actual utilization rate of luminous flux reaches 80%; and by the adoption of the wall washing lens, the glare can be lowered, and the light pollution caused by unwanted light is reduced.

The invention relates to a welding torch (10) having a torch body (46) in which at least one device (32) for feeding a welding wire (13) and a contact tube (30) having a bore (33) and a guide bore (34), running concentrically thereto, for guiding the welding wire (13) in the direction of a workpiece (16) are arranged, wherein the welding wire (13) can be supplied with electrical energy via the contact tube (30), wherein one end of the feed device (32) is arranged in the guide bore (34) of the contact tube (30) and is provided with an electrically conductive end piece (36) having a bore (40) for the welding wire (13). To provide such a welding torch (10) in which the durability or the service life of the wearing parts, in particular of the contact tube (30), is prolonged, provision is made for the end piece (36) of the feed device (32) to be movably arranged in the guide bore (34) of the contact tube (30).