50results about How to "Quick maneuver" patented technology

The invention relates to a duct type multi-rotor tethered drone and a control system thereof, belongs to the field of drones, and aims to solve the problems that existing drones are short in flight duration and prone to crash due to the fact that the rotors of the drones are exposed. The duct type multi-rotor tethered drone is characterized in that the an inner central pipe is connected with an outer duct pipe through a group of guide vanes, a group of carbon fiber pipes is fixedly mounted on the outer wall of the lateral side of a block formed by central plates, the middle section of each carbon fiber pipe is fixed with the wall of the duct pipe, and an auxiliary rotor is mounted at the tail end of each carbon fiber pipe through an auxiliary motor; a hardware control system is mounted onthe upper surface of the central plate block, a main motor is coaxially mounted on the lower surface of the central plate block, the main motor drives a main rotor, and a power supply system is arranged beside the main motor; the hardware control system is connected with the main motor, a group of auxiliary motors, the power supply system, a video collecting unit and an automatic pilot, and a tether is connected with the hardware control system, the main motor, the group of auxiliary motors and the video collecting unit through the power supply system. The duct type multi-rotor tethered dronecan constantly work around the clock.

The invention relates to the field of flood prevention and rescue, and in particular relates to a bank-off advancing method for a dam breach. According to the method, firstly a portable steel chisel pile bridge pier module, an insertion board module and a trap plate are assembled quickly for bank-off advancing of the dam break to finally form a rescue temporary bridge, and then a tossing operationis carried out. By adopting the trap plate and modularized equipment, the equipment is quickly assembled on site and advanced quickly, so that a quick and safe rush repair operation on the dam breakcan be carried out.

The invention relates to the field of flood prevention and rescue of the Yellow river, in particular to a rescue and relief work device after dike breaching. The rescue and relief work device comprises inserting plate modules, steel chisel column bridge pile modules and locking modules. The steel chisel column bridge pile modules are formed by steel chisel units in a connected mode through connecting threads. The inserting plate modules and the steel chisel column bridge pile modules are fixed and connected through the locking modules. Inserting plate units are connected and fixed in the modethat the steel chisel units are inserted into overlapped different-diameter hole combinations. All the unit modules are rapidly assembled on site, and thus a cage leg auxiliary bridge is built at thebreaching position. The rescue and relief work device can repair the dike breaching position effectively at the first time, and is light and rapid in transport, simple in construction step and wide inapplication range.

A mobile cooling system comprises a refrigeration system, a heat exchange system, a pipeline system, a pipe diameter transition system, a power system, a conveying system, an auxiliary system and a command system; all the systems adopt modular design, different systems can be integrated into one module or divided into a plurality of modules, and all or part of the systems can be selected to be integrated into a heat exchange vehicle, a pipeline vehicle, a powered vehicle, a pump vehicle, an auxiliary tool vehicle, a command vehicle and the like or integrated into some vehicles of the heat exchange vehicle, the pipeline vehicle, the powered vehicle, the pump vehicle, the auxiliary tool vehicle, the command vehicle and the like. After a combustible liquid storage tank fire happens, the mobile cooling system is connected into an original conveying pipeline, heated combustible liquid in the fired storage tank is subjected to heat exchanged and cooling and then safely guided out, the practical effect of a valve opening flow guiding method for fire fighting is improved, and economic looses, environmental pollution, secondary accident damage and the social influence which are caused by the fire are reduced.

The invention belongs to the technical field of designing and manufacturing of agricultural mechanical equipment, and particularly relates to a novel multifunctional weeding machine. The novel multifunctional weeding machine comprises a machine wheel and a main rack, wherein the main rack is composed of two transverse rods, the machine wheel is arranged at the front end of the main rack, a pedal is fixedly connected to the rear end of the main rack, part of the pedal protrudes out of the main rack, and a main bent rod is arranged below the protruding part and connected with blades; an auxiliary rack is a frame formed by two longitudinal rods, the lower end of the auxiliary rack is arranged outside the transverse rods of the main rack in a wrapping and clamping mode, and two symmetrical auxiliary bent rods are arranged at the upper end of the auxiliary rack and connected with blades; the lower end and the upper end of an inclined rod are connected with the main rack and the auxiliary rack; a push rod is connected between the two transverse rods and wrapped and clamped by the upper end of the inclined rod, and the lower end of the inclined rod is connected with the transverse rods. By means of the novel multifunctional weeding machine, in use, an operator can turn the weeding machine by 180 degrees with the machine wheel as the axis at any time, in other words, tool bits on the main rack or tool bits on the auxiliary rack can be used for weeding, and fast moving is achieved; when plowing is needed, the tool bits can be changed, and the weeding machine is fast and convenient to use.

The invention relates to the field of Yellow River flood control and emergency equipment, in particular to a bridge leg depth limiter used for preventing settlement and instability of emergency bridges, and the IPC classification number is E02B1 / 00. The limiter Includes fixing block, spring, movable block, Fastening nut, upper disk, Center turntable, fastening nails and pivot pin, The movable block and the middle turntable are arranged in the groove corresponding to the lower plate, the front inclined surface of the limit short arm of the middle turntable and the front inclined surface of themovable block are matched, so that the bridge leg depth limiter is in a waiting-to-be-locked state, the upper plate is arranged on the lower plate, the upper plate is connected with the lower plate through a rotating shaft pin, and the movable block is limited between the upper plate and the lower plate through fastening nails. When the free bridge leg is installed, the leg depth limiter of the invention can be directly stuck at the reserved position of the bridge leg as a unit accessory, and can be used for emergency rescue and disaster relief operations at levee and dam crevices, thereby solving the problems of low load bearing capacity and inclined instability of the free bridge quickly built during the emergency rescue and disaster relief.

The invention relates to the field of flood control and emergency rescue, in particular to a dam emergency rescue method, which utilizes a modular portable bridge cage emergency rescue device and an anti-settling plate to build an emergency bridge, wherein the anti-settling plate is directly inserted on a bridge leg support beam of the portable bridge cage emergency rescue device, and then the convenient bridge is used for throwing operation. The anti-subsidence type convenient bridge adopted by the invention can be quickly assembled on the spot, a cage leg convenient bridge is established atthe crevasse, the problems of low load bearing force and inclined instability of the quick-built convenient bridge are solved by utilizing the anti-subsidence plate, the dam crevasse can be effectively repaired in the first time, the transportation is light and quick, the construction step is simple, and the application scope is wide.

A novel mast mechanical equipment vertical assembling foundation is a regular polygon prism, cylinder or polygon prism concrete independent foundation structure which is obtained by vertically assembling the concrete prefabricated part. The invention is widely suitable for the mast mechanical equipment which periodically moves or is fixedly used in fields of building, electric power, information, geological industry and military industry. The invention is mainly characterized in that the horizontal side pressure and the friction of the foundation soil are fully utilized for increasing the dumping resistance of the foundation. The invention has the advantages of small accommodation area, high installing and detaching velocity, no water operation on the construction side, providing new condition for the foundation installing at the high-cold and dry areas, predominant resource-saving and energy-saving and environment-protecting benefits, and evident economic benefit.

The invention belongs to the technical field of bionic underwater propellers, in particular to a high-speed swinging two-joint bionic fishtail device. The present invention comprises fish tail front part, fish tail middle part and fish tail caudal fin; Fish tail front part is provided with driving device installation frame, drive shaft, first crankshaft and second crankshaft; The front end of fish tail middle part is provided with first joint from A moving shaft; the front end of the fish tail tail fin is provided with a second joint driven shaft. When the present invention operates, the drive shaft rotates under the drive of the motor to drive the first crankshaft and the second crankshaft to rotate through the gears, and the first crankshaft and the second crankshaft respectively drive the first joint driven drive through the belt sleeved on the connecting rod journal. The shaft and the second joint driven shaft rotate to realize the bionic fishtail swing. The invention can realize the high-speed swing of the double-joint bionic fish tail only relying on a single motor, and realizes the rapid maneuvering of the robotic fish.

The invention discloses a saturated sliding mode variable structure control method for rapidly maneuvering attitudes of satellites. The saturated sliding mode variable structure control method includes steps of 1, acquiring current attitudes of the satellites and acquiring attitude errors of the current attitudes of the satellites relative to target attitudes; 2, determining bandwidths, damping coefficients, the maximum torque of actuating mechanisms, torque regulation coefficients and fundamental frequencies of flexible accessories, and computing control parameters for rapidly maneuvering the attitudes of the satellites; 3, computing saturated sliding mode surfaces of the satellites in rolling directions and computing linear sliding mode surfaces of the satellites in pitching and yawing directions; 4, acquiring control torque by means of computation; 5, acquiring corresponding control instructions for the actuating mechanisms by the aid of the control torque acquired in the step 4, transmitting the instructions to the corresponding actuating mechanisms and controlling the actuating mechanisms to rapidly maneuver the attitudes of the satellites. The saturated sliding mode variable structure control method has the advantages that the method is simple and reliable and is low in computational complexity, the satellites can be rapidly maneuvered and stabilized by the aid of the saturated sliding mode variable structure control method, accordingly, the attitude maneuvering time can be shortened, and the saturated sliding mode variable structure control method is obviously superior to other methods.