5results about How to "Increase propulsion" patented technology

This invention provides an angle-of-attack control device and a passive angle-of-attack airfoil sailboat, belonging to the field of passive angle-of-attack control for rigid sails. The angle-of-attack control device includes an airfoil sail and a rotating mechanism. The airfoil sail includes an airfoil sail surface, a mast, and a base matching the mast. The mast is perpendicular to the base and rotatably connected to the base. The mast is fixedly connected to the bottom of the airfoil sail surface. The rotating mechanism is located at the top of the airfoil sail surface. The rotating mechanism includes a motor and a rotating drum. The motor includes a rotation drive component, a speed-changing component, and an output shaft. The motor is located at the top of the airfoil sail surface, and the output shaft is parallel to the mast and fixedly connected to the rotating drum. This passive angle-of-attack airfoil sailboat includes a double hull and multiple angle-of-attack control devices, which are arranged in an array on the double hull. Using the angle-of-attack control device and passive angle-of-attack airfoil sailboat provided by this invention can solve the problems of excessively large airfoil sail structures, insufficient mainsail area, and insufficient propulsion in existing technologies.

A sole (10) has a sole main body and a plate (50) which are provided continuously from a front foot portion to a rear foot portion. A base part (30) of the sole main body comprises a high-hardness part (33) with specified hardness and a low-hardness part (36) with hardness lower than that of the high-hardness part (33). The upper surface (31) of the base part (30) includes a high-hardness region (33a) defined by a high-hardness part (33) and a low-hardness region (36a) defined by a low-hardness part (36), and the plate (50) is disposed on the upper surface (31) so as to straddle the high-hardness part and the low-hardness part, thereby including a first region (51) overlapping the high-hardness region (33a) and a second region (52) overlapping the low-hardness region (36a). The plate (50) includes a front foot side plate (50a) located on the front foot side and a rear foot side plate (50b) located on the rear foot side. The proportion of the second region (52) in the front foot side panel (50a) is higher than the proportion of the second region (52) in the rear foot side panel (50b).

The application discloses a feed mechanical pipeline conveying device and relates to the field of feed production and conveying, which comprises a conveying pipeline and a conveying auger. The conveying pipeline comprises fixed pipes and movable pipes. The fixed pipes and the movable pipes are alternately distributed and coaxially arranged. At least one movable pipe is arranged. Two adjacent fixed pipes are connected through a connecting piece and coaxially arranged. Both ends of the conveying pipeline are fixed pipes, which are connected with a feeding bin and a discharging bin of the conveying pipeline, respectively. The movable pipe is connected with a rotating piece. When the conveying auger rotates, the conveying speed of materials at the movable pipe is changed through the rotation of the movable pipe. Through the arrangement of the movable pipe, the rotation speed of the main auger does not need to be changed. The material flow speed is accelerated or slowed down at the fixed pipes and the movable pipes. The movable pipe is arranged at the easy-blocking point and reversely rotates, the material advancing force of the area is enhanced, the blockage is effectively dredged or prevented, the movable pipe is arranged at the area needing buffering and rotates with the auger in the same direction, the material flow speed of the area is reduced, the buffering effect is achieved, and energy consumption is further reduced.

The application discloses an ultrasonic driving nanorobot and a preparation method and application thereof, and the preparation method comprises the following steps: reacting Pd NPs, 4-mercapto phenylacetic acid and polyacrylic acid, adding tetraethyl orthosilicate and ammonia, and stirring to obtain PdSiO2; reacting titanium chloride solution, sodium bicarbonate solution and PdSiO2, and performing amino modification to obtain NH2-TiO2-Pd-SiO2; connecting COOH-PEG-TPP and COOH-PEG-RGD to the surface of NH2-TiO2-Pd-SiO2, and removing SiO2; the nanorobot can penetrate the dense extracellular matrix in a tumor microenvironment and precisely target a diffuse lesion, and further has the functions of catalytically generating active oxygen free radicals and regulating a tumor microenvironment, so that the oxidation-reduction / metabolic balance of the TME is changed, immunogenic cell death is induced, and the anti-tumor immune response is further enhanced.

The utility model provides an underwater brushless motor. The underwater brushless motor comprises a stator assembly and a rotor assembly. The motor is characterized in that the stator assembly comprises a shell and a stator winding arranged on the inner side of the shell, and sealant wrapping the stator winding in a sealed mode is arranged in the shell; the rotor assembly comprises a rotor cylinder and a magnetic ring arranged on the side wall of the rotor cylinder in a sealed mode. A plurality of integrally formed paddles are arranged on the inner side of the rotor cylinder; at least two ceramic bearings are connected between the stator assembly and the rotor assembly, and the rotor assembly is rotatably connected with the stator assembly through the ceramic bearings. The motor adopts a non-central-spindle and non-support design, and the blades and the rotor cylinder are directly integrally formed, so that water flow and sundries can freely pass through the interior of the motor and are not easily wound by foreign matters such as silk threads, motor faults caused by jamming are reduced, and the system stability is improved.