7results about How to "Small frontal area" patented technology

The application discloses a longitudinally foldable water-air dual-purpose propeller, and belongs to the technical field of cross-medium aircraft propulsion, comprising a new-configuration hub, a longitudinal folding mechanism, a limiting structure and a down-bending propeller blade with a preset down-bending angle; the configuration of the propeller enables the down-bending propeller blade to be completely unfolded to form a first working configuration through centrifugal force in air, and the down-bending propeller blade to be passively folded and limited to form a second working configuration through hydrodynamic lift in water; the longitudinally foldable water-air dual-purpose propeller can automatically complete mode switching according to the difference between working media without any active control mechanism, and can maintain high efficient propulsion performance in both media.

The invention discloses a multi-blade fan which comprises a machine frame, a motor is arranged on the machine frame, the motor is provided with an output shaft capable of rotating, the output shaft is connected with a first blade, and the output shaft is further connected with a second blade capable of rotating relative to the output shaft. A clutch structure used for connecting or disconnecting power transmission between the second fan blade and the output shaft is arranged between the second fan blade and the output shaft, the multi-fan-blade fan is simple in structure and capable of achieving hierarchical control, the invention further provides a radiator, and the radiator adopts the multi-fan-blade fan to achieve the purpose of improving the radiating efficiency. The invention further provides a control system applied to the radiator, and the control system can flexibly adjust strategies according to different working conditions, has good self-adaptive capacity and meets the heat dissipation requirement changes in different use scenes.

A rocker arm type floating dock pump station capable of preventing water flow impact comprises a shoreside main buttress, a shoreside mooring bollard buttress and a water conveying device, the water conveying device comprises a rocker arm connector, a safety handrail, a pedestrian path, a water conveying pipeline and a reverse opening reinforcing structure, an anchoring facility and a pump station mooring facility are arranged on the floating dock pump station, a shoreside mooring facility is arranged on the shoreside mooring bollard buttress, and a water outlet is formed in the shoreside mooring facility. A steel cable is connected between the pump station mooring facility and the shoreside mooring facility, the upstream faces, close to the two sides of the upstream, of the floating dock pump station are made into streamlines, water flow is divided into two parts, and the impact of the water flow and upstream garbage on the floating dock is reduced; the rigidity and the structural strength of the water conveying device are improved through the reverse opening reinforcing structure; a rotary joint in the horizontal direction in the rocker arm joint can rotate up and down, and a rotary joint in the vertical direction in the rocker arm joint can rotate left and right, so that the water delivery device floats along with the floating of the floating dock pump station; the splayed anchoring structure of the Hall anchor and the anchor chain and the triangular structure of the steel cable, the floating dock pump station and the water delivery device can resist wind wave impact.

The invention relates to the field of semiconductor substrate processing, and provides a liquid collecting device, a liquid processing system and a liquid collecting method, and the device comprises an upper collecting cup which is provided with a shell, an adjusting ring and a plurality of blades; the first ends of the blades are movably connected with the adjusting ring, and the second ends of the blades are movably connected with the shell; when the adjusting ring rotates relative to the shell, the blades rotate synchronously. The plurality of blades are distributed around the base plate, the base plate rotates during liquid treatment, and the blades are used for providing a liquid drop attachment surface when the base plate rotates; the lower collecting cup is provided with a side wall and a bottom wall which are connected; the bottom wall is used for receiving liquid; the side wall is arranged on the outer side of the shell; the side wall is movably connected with the shell; and the middle collecting cup is provided with an upper flow guide surface positioned on the bottom side of the base plate and is used for guiding the liquid drops to the bottom wall. The device is used for reducing the phenomenon that liquid drops hit against the inner wall of the collecting cup and are splashed back to a base plate.

The invention discloses a sea lion front fin simulating device capable of actively deforming, which belongs to the technical field of underwater navigation equipment and comprises N joint skeleton mechanisms, a driving connecting rod, a supporting shell, a bionic flexible outer skin and a driving unit. The joint framework mechanism comprises a shin rod, a supporting rod, a crank, a first fixing pin shaft, a second fixing pin shaft and a sliding pin shaft, and a plane connecting rod mechanism is formed. One end of the shank rod is connected with the supporting rod through a first fixing pin shaft, the other end of the supporting rod is connected with the crank through a second fixing pin shaft, and the other end of the crank is connected with a sliding pin shaft and can slide along the shank rod. And a driving connecting rod is connected between the sliding pin shafts of the adjacent joint framework mechanisms. The supporting shell is fixed to the shin rod to form supporting face bodies located on the two sides of the first fixing pin shaft, and the bionic flexible outer skin is installed on the supporting face bodies to form a fin-shaped surface. The driving unit is connected to the shin rod and drives the shin rod to swing around the first fixing pin shaft. Through spanwise active deformation, flexible skin hydrodynamic characteristics, a multi-joint bionic structure and rigid-flexible combined design, the propulsion efficiency and adaptability of the underwater robot are remarkably improved.

The invention relates to the technical field of underwater intelligent robots, in particular to an ocean structure cleaning robot based on a bionic octopus and a control method, and the ocean structure cleaning robot comprises a head variable fairing system, a mechanical arm telescopic adsorption system, a mechanical arm telescopic cleaning system, a head electromagnetic adsorption track mechanism and a bionic octopus mechanism; the head variable fairing system is fixed to a head vector control cabin shell of the bionic octopus mechanism through a rigid connecting piece, the mechanical arm telescopic adsorption system is connected to an upper body of the bionic octopus mechanism through a universal spherical hinge, and a lower body of the bionic octopus mechanism is connected with the mechanical arm telescopic cleaning system. The problems that a traditional single adsorption mode is poor in adaptability to materials, and complex curved surfaces are not tightly attached are solved, it is guaranteed that the robot is stably attached to the surface of a vertical or inclined or high-curvature structure, and the falling risk in the operation process is avoided.

The present invention belongs to the technical field of underwater robots, and particularly relates to a folding antenna device for an autonomous underwater robot. The device includes an antenna folding mechanism, a driving mechanism, and a pressure-resistant cabin, wherein an antenna accommodating groove is provided on the top of the pressure-resistant cabin, and the antenna folding mechanism is arranged in the antenna accommodating groove; the driving mechanism is arranged in the pressure-resistant cabin, and passes through the cabin of the pressure-resistant cabin to be transmission-connected with the antenna folding mechanism, thereby driving the antenna folding mechanism to unfold or fold. The present invention has a simple and compact structure. When the autonomous underwater robot needs to communicate or locate on the water surface, the antenna folding mechanism is in an unfolded state. Since the antenna length is not limited by the cabin diameter and cabin section length of the pressure-resistant cabin, it can be selected according to actual needs, so the signal strength of the antenna can be guaranteed; when the autonomous underwater robot is sailing underwater, the antenna folding mechanism is in a folded state, which reduces the frontal flow area of ​​the antenna component, thereby reducing the underwater navigation resistance of the autonomous underwater robot and increasing the endurance time.