57results about How to "Large corner range" patented technology

The present invention discloses a low-speed wind tunnel virtual flying experimental support device which comprises a base, an airfoil support seat, a pre-bent support rod and a three-degree-of-freedom joint. The base is fixedly installed at the center position of a wind tunnel test section basic platform. The bottom end of the airfoil support seat is vertical and is fixedly installed on the base. The cross section of the airfoil support seat is parallel to a wind tunnel flow coming direction. One end of the pre-bent support rod is connected to the top end of the airfoil support seat, the other end of the pre-bent support rod is connected to the three-degree-of-freedom joint, and the cross section of the pre-bent support rod is parallel to the wind tunnel flow coming direction. The rotation center of the three-degree-of-freedom joint is in an axis in a wind tunnel and is hinged to an aircraft model. The hinged position is provided with a fine burning device which allows the mass center of the aircraft model coincides with the rotation center of the three-degree-of-freedom joint. According to the invention, the large range three-axis attitude free support of the aircraft model in a virtual flying experiment can be realized, the structure is simple, the interference is small, the accuracy is high, and the installation and adjustment methods are simple.

The invention discloses a wind tunnel model supporting device which comprises a movable platform, a clamping device, a first driving unit and a second driving unit, wherein the movable platform has three translational freedom degrees and at least one rotation freedom degree. The clamping device is connected with the movable platform and is used for fixing and supporting the model. The first driving unit and the second driving unit are arranged on the movable platform and used for driving the clamping device, and therefore, the clamping device obtains the freedom degrees of rotation in horizontal and transversal directions. The first driving unit comprises a first driving motor and a first rope traction mechanism. The second driving unit comprises a second driving motor and a second rope traction mechanism. The wind tunnel model supporting device with simple and reliable structure can realize six freedom degrees of the model in the wind tunnel test, effectively expand the model pitch and the roll amplitude capable of being realized by model supporting, and decrease the acceleration, the motion speed and the motion travel of the driving units through the first driving unit and second driving unit which are connected in parallel.

The invention discloses a bionic snake-like robot and a method, and belongs to the field of bionic robots. The snake-like robot comprises two parts including a drive box (1) and a multi-joint snake-like arm (2), wherein the drive box (1) is composed of drive motors, winches and supporting plates, and the multi-joint snake-like arm (2) is composed of joint units, universal joins and steel wire ropes. The series-connection structure design of the universal joints (9) is adopted in various joint units (8) of the bionic snake-like robot, and the joint units (8) are driven through the steel wire ropes (10) evenly distributed along the circumference; and the structure design that steel wire rope through holes are evenly distributed in a parse manner in the sector direction along the circumference, and wiring is conducted is adopted in the joint units (8). The bionic snake-like robot has the characteristics that the structure is simple, the redundancy freedom degree is high, flexibility is good, and the narrow space obstacle avoiding capability is high.

The invention discloses a two-dimensional moving magnet type rapid reflector device which comprises a reflector, a rigid supporting assembly, a reflector support, a voice coil motor, a displacement measurement sensor and a shell. The reflector is supported at the front end of the base of the shell by the reflector support; the rigid supporting assembly connects the reflector support to the front end of the base of the shell; the voice coil motor is fixed between the reflector support and the base of the shell; and the displacement measurement sensor is fixed on a base of the shell. According to the invention, the moving magnet type rapid reflector device is adopted, a large rotation angle range is realized, the technical problems of thermal deformation of the reflector and the like causedby cable dragging and coil heating of a moving-coil type design are avoided, and the structure is reasonable and compact in arrangement and convenient to install.

The invention discloses a spiral cross flexible bearing based on a reed. The bearing comprises an upper end cover, a lower end cover, an upper reed, a middle reed, a lower reed and taper dowels, wherein the upper end cover and the lower end cover are assembled so as to form a spiral gap, and the upper reed, the middle reed and the lower reed are installed on a cavity formed in the upper end cover and the lower end cover. The bearing provided by the invention utilizes the three reeds with same structure to sequentially spirally cross and combine in space so as to match with the upper and lower bearing end covers, the flexible bearing which has the advantages of large stroke, large radial direction and very compact axial rigidity structure is formed, and meanwhile, the flexible bearing has higher movement resolution and precision. The bearing provided by the invention based on the upper and lower bearing end covers is matched to install reeds with different structural styles so as to deploy the flexible bearing with different properties, and the bearing meets different application fields.

The invention discloses a rear-mounted grinding wheel main shaft motor of a plane grinding machine, which is characterized by comprising a shell, a main shaft, a permanent magnet rotor assembly, a stator assembly, an encoder, a front end cover and a rear end cover, wherein the main shaft is arranged in the shell through a bearing I and a bearing II; the stator assembly is arranged in the shell and is located at the rear end of the shell; the permanent magnet rotor assembly is arranged on the main shaft; the front end cover is arranged at the front end of the shell; the rear end cover is arranged at the rear end of the shell; the encoder is arranged at the rear end of the main shaft and is connected with an external driver; the main shaft extends from the front end cover; the part of the main shaft is a conical surface, which extends from the front end cover; and the conical surface of the main shaft is provided with a grinding wheel grinding head. The rear-mounted grinding wheel main shaft motor of the plane grinding machine is capable of expanding the rotation angle of the grinding head and expanding the application range of the plane grinding machine.

The invention provides a noncontact steering angle sensor comprising a shell, and a sun wheel shaft, a fixed internal tooth ring, a planet wheel set, a driving wheel set, a measuring gear, a magnet and a magnetic induction element which are arranged in the shell. The noncontact steering angle sensor is high in integration and small in radial dimension. The sensor is enabled to directly output a steering angle position measurement signal through detection of the steering angle of the measuring gear and simple conversion of driving ratio, the driving ratio of the steering angle of the sun wheel shaft to the steering angle of the measuring gear is high, and the range of the detectable steering angle is large.

The invention discloses a straight line and rotation coupling-out type piezoelectric driving device which comprises a pile mounting seat, straight pins, a piezoelectric pile, strain foils, an invar sheet, a steel ball, a coupling-out component and an output shaft, wherein the strain foils are attached to the side surfaces of the piezoelectric pile, the bottom surface of the piezoelectric pile is adhered to the pile mounting seat, and the top surface of the piezoelectric pile is adhered to the invar sheet and is contacted with the steel ball inside an output shaft ball socket; the top of the coupling-out component is in interference nesting with the output shaft, and the bottom of the coupling-out component and the pile mounting seat are positioned with the straight pins and fixed with holding screws; after the piezoelectric pile applies voltage, the output shaft and the top of the coupling-out component are pushed to extend together along the axial direction; and because of the deformation coupling characteristics of the coupling-out component, the top of the coupling-out component and the output shaft rotate with a certain angle around the axial direction at the same time, and the angle is in direct proportion to the axial elongation. Output of straight line and rotary motion can be carried out in the axial direction at the same time, and the device has the advantages of being simple in structure, easy to control, large in angle rotation range, and high in displacement and angle rotation precision.

The invention discloses a dual-bearing galvanometer and laser radar. The dual-bearing galvanometer comprises a fixed seat, a galvanometer driving rack and a reflection lens, wherein the galvanometer driving rack comprises a fixed support, a fast-axis frame and a slow-axis frame, the reflection lens is arranged in the fast-axis frame, the fast-axis frame is rotatably connected to an inner side of the fixed support, the slow-axis frame is fixedly connected to an outer side of the fixed support, the galvanometer driving rack is rotatably connected to the fixed seat, the fast-axis frame twists around a first direction, the slow-axis frame twists around a second direction, and the first direction is perpendicular to the second direction. Therefore, the reliability of an MEMS galvanometer can beimproved, the vibration and impact resistant capability of the galvanometer is improved, so that the lifetime of the laser radar is favorably prolonged.

The invention discloses an automatic capping device for an outer wall coating barrel, and belongs to the field of capping devices. The automatic cover sealing device for the outer wall coating barrelcomprises a conveying table, a supporting frame and a press-fitting mechanism, wherein the supporting frame is attached to the conveying table, a cylinder body is vertically installed on the support frame, and a press-fitting mechanism is connected to a cylinder body piston shaft. A pressing claw in the press-fitting mechanism are formed by sequentially connecting an upper claw arm, a lower claw arm and a pressure sealing head, a sliding groove is formed in the upper claw arm, and a pin shaft connected with a transmission arm can slide in the sliding groove, so that the pressing claw is drivento rotate around a hinge shaft on the lower claw arm, and the sealing of a sealing and pressing head for a barrel cover is achieved. The hinged connection between the transmission arm and the pressing claw is changed into a connecting relationship capable of sliding and rotating simultaneously, so that the radial size of a circle where the sealing pressure head is disposed can be shortened, the pressure is conveniently applied, and the sealing performance of the coating barrel is improved.

The invention provides a river channel dredging grab bucket device. The device comprises an adjusting mechanism, a supporting rod, bucket piece mechanisms and a pressing disc mechanism. The adjustingmechanism is a planar six-rod mechanism composed of a bucket rod, a grab bucket hydraulic cylinder, a rocker, a connecting rod and a connecting seat through hinging, wherein the grab bucket hydrauliccylinder is a driving part; the upper end of the supporting rod is fixed to the connecting seat of the adjusting mechanism; and the side wall of the supporting rod is provided with the bucket piece mechanisms uniformly distributed in the circumferential direction. Each bucket piece mechanism comprises a bucket piece hydraulic cylinder and a bucket piece. The lower end of the supporting rod is provided with the pressing disc mechanism, and the pressing disc mechanism comprises a pressure disc hydraulic cylinder fixedly connected with the lower end of the supporting rod, and a pressing disc fixedly connected with a piston rod of the pressure disc hydraulic cylinder. The side wall of each bucket piece is provided with a drainage groove. The river channel dredging grab bucket device takes theplace of a hydraulic excavator bucket mechanism to achieve grabbing, squeezing and removing of river channel sludge, and has the advantages of high convenience flexibility, high efficiency and low cost.

The invention discloses a tire burst safety guaranteeing auxiliary device applicable to a four-driven unmanned mine truck, and aims to improve the safety of the unmanned mine truck after tire burst of a wheel and ensure the working efficiency of the mine truck. The auxiliary device consists of a driving mechanism, a transmission mechanism, a connecting structure and an auxiliary wheel, wherein the driving mechanism adopts an auxiliary motor as a power source of the safety guaranteeing auxiliary device; the transmission mechanism adopts a rod system, and comprises a plurality of transmission rods working together; the connecting structure adopts a hinged structure, and is used for fixing the safety guaranteeing auxiliary device and connecting the mechanisms; the auxiliary wheel is equipped with a wheel hub driving motor, is mounted on a fork-shaped mechanism, and provides a part of a braking force for the unmanned mine truck after the tire burst. The tire burst safety guaranteeing auxiliary device has the characteristics of convenience in mounting and dismounting, convenience in maintenance, suitability for working in a harsh working condition and the like; during working, the tire burst safety guaranteeing auxiliary device has a self-locking function so as to improve the working reliability thereof.