51results about How to "Improve swing performance" patented technology

The present invention is one kind of fish-shaped nacelle propeller and belongs to the field of ship propelling technology. The fish-shaped nacelle propeller of the present invention includes nacelle body, support, motor bearings, shaft coupling, screw propeller, screw propeller bearing, propelling motor stator, propelling motor rotor, tail fin and two side fins. The nacelle body is connected with the support; the screw propeller has one end fixed via the screw propeller bearing inside the nacelle body; the propelling motor stator is set via the motor bearings and the support inside the nacelle body; the propelling motor rotor shaft is connected to the shaft of the screw propeller via shaft coupling; and the tail fin and the side fins are connected to the nacelle body smoothly. The present invention has optimized streamline outer shape, effectively improved tail flow field, improved hydrodynamic performance, and raised propeller efficiency.

The invention relates to a water spray propulsion unit for a ship, consisting of a case, a motor, a liquid inlet tube, a gas inlet tube, a rotation type volume pump and six nozzles. The six nozzles are respectively a left forward nozzle, a left backward nozzle, a left lateral nozzle, a right forward nozzle, a right backward nozzle and a right lateral nozzle, wherein the left forward nozzle and the left backward nozzle are installed at the left side of the tail part of the ship body; the right forward nozzle and the right backward nozzle are installed at the right side of the tail part of the ship body; the left lateral nozzle is installed at the left side of the front part of the ship body; and the right lateral nozzle is installed at the right side of the front part of the ship body. A dynamic shaft of the motor is connected with a central shaft of the rotation type volume pump through a decelerating mechanism, the liquid inlet tube is connected with a liquid inlet tube connector of the rotation type volume pump, and the gas inlet tube is connected with a gas inlet tube connector of the rotation type volume pump. By taking the rotation type volume pump as a core part, the water spray propulsion unit for the ship has the advantages of small volume, light weight, high flow, high lift and great suction, and the problems of cavitation and cavitation erosion of a vane pump are effectively solved. According to the water spray propulsion unit, gas-liquid two-phase propulsion is adopted so that the propulsion efficiency is high.

The invention discloses a composite triple-hulled vessel with aid-to-navigation hydrofoils. The composite triple-hulled vessel comprises a deck, a main vessel body and two side vessel bodies, wherein the main vessel body and the two side vessel bodies are fixedly connected to the lower surface of the deck; the two side vessel bodies are located at the left and right sides of the main vessel body, and a deep-immersed aid-to-navigation hydrofoil is arranged at the tail portion of each side vessel body. According to the composite triple-hulled vessel with the aid-to-navigation hydrofoils, the design ideas of two high-performance vessels which are added with hydrofoils and side bodies correspondingly to be propelled are combined together, while the advantages of a triple-hulled vessel is ensured, the aid-to-navigation hydrofoils added with propelling devices assist the side vessel bodies to propel, so that the turning ability and the maneuverability of the triple-hulled vessel are enhanced, and the lengths of the deep-immersed aid-to-navigation hydrofoils and wave energy recycling hydrofoils are adjusted to change the areas of the hydrofoils, so that the flotation of the triple-hulled vessel in the sailing process is controlled.

The invention discloses a vibrating diaphragm which comprises a flat-plate-shaped vibrating part and a folded ring part which is bent and extends from the periphery of the vibrating part and surroundsthe vibrating part, the cross section of the folded ring part is arc-shaped, the folded ring part comprises an upper surface and a lower surface which are oppositely arranged, and the thicknesses ofpart of positions of the folded ring part are different. The invention further provides a field sound generating device applying the vibrating diaphragm. Compared with the prior art, the vibrating diaphragm and the sounding device are good in acoustic performance and reliability.

The invention discloses a superstructure rotary hydraulic control system, which comprises a first direction control valve and a variable backpressure element, wherein the direction control valve is arranged between a rotating motor and system pressure and system oil return oil circuits, the variable backpressure element is arranged between an oil return port of the first direction control valve and the system oil return oil circuit, and the first direction control valve is in one-way communication with the variable backpressure element. Compared with the prior art, the superstructure rotary hydraulic control system has the advantages that when the moment of resistance is higher in rate of change under the operating conditions of rotation starting and stopping, oil return pressure of the variable backpressure element can be increased by adjusting the variable backpressure element, and accordingly system rigidity can be improved to overcome pressure impact under the operating conditions of starting and stopping, and improvement of rotating performance and overall stability is guaranteed reliably. Meanwhile, since the system oil return oil circuit is provided with a fixed backpressure constantly, system rigidity is improved correspondingly, and high impact resistance can be achieved in the whole superstructure rotation process. The invention further provides a crane with the superstructure rotating hydraulic control system.

The invention relates to a shilling rudder used for an icebreaker. The shilling rudder comprises a rudder heel (3) installed on a stem (1), an ice blade (2) and a rudder blade (7) located below the rudder heel (3). A rectification tail (12) of the rudder blade (7) is in a fishtail shape. An upper flow generating plate (9) and a lower flow generating plate (11) are installed at the upper end and the lower end of the rudder blade (7). The rotating angle of the shilling rudder ranges from -70 degrees to +70 degrees. A middle reinforcing rib (10) is installed in the middle of the rudder blade (7). The distance between the edges of the middle reinforcing rib (10) and the edges of the rudder blade (7) ranges from 100 mm to 150 mm. The ratio of the width of the rectification tail (12) to the chord length of the rudder is 0.07. The distance between the edges of the upper flow generating plate (9) and the edges of the rudder blade (7) and the distance between the edges of the lower flow generating plate (10) and the edges of the rudder blade (7) range from 150 mm to 200 mm. By means of the shilling rudder, the shipping direction stability and the rotation performance of a ship can be effectively improved; meanwhile, the ice block impacting resisting capacity of the rudder during ice navigation can be improved, a flow field at the tail can be improved, and the propelling performance of a propeller can be improved. Compared with a shilling rudder in the prior art, the shilling rudder has the advantages of being higher in rudder efficiency, better in strength and more suitable for working in frozen sea areas.

A material-conveying system comprises a main conveyor for conveying material, a swing conveyor for conveying the material to the main conveyor and a processor for controlling a speed of the swing conveyor based on a feedback signal. The feedback signal may be indicative of a speed of the swing conveyor and / or a speed of a main conveyor. The feedback signal may be indicative of material level, belt slippage, flow rate, belt angle and / or material rollback.

The invention relates to a high-efficiency and environmentally-friendly shilling rudder body, which comprises a rudder stock, wherein one end of the rudder stock is provided with rudder blade bodies; each rudder blade body comprises a rudder blade side plate; the front end of the rudder blade side plate is provided with a bow transom plate; the other side of the rudder blade side plate corresponding to the bow transom plate is provided with a stern transom plate; the end parts of the two ends of the rudder blade side plate are respectively provided with a swash plate; the upper end of the rudder blade side plate is provided with an upper swash plate, and the lower end of the rudder blade side plate is provided with a lower swash plate; and the rudder blade side plate is provided with a plate body reinforcing mechanism. The shilling rudder body has a simple structure manufacturing process and low manufacturing cost and is easy to generalize; due to the stern transom plate, the tail part of the rudder blade body forms circular flow, the lift coefficient of the rudder blade body is increased, and the moment of turning a ship is increased; since the upper swash plate and the lower swash plate are designed, transverse circular flow on the end part of the rudder blade body is suppressed, the longitudinal circular flow speed is increased, the revolving performance and the sideslip capacity of the ship are improved; the shilling rudder body has a simple and compact structure, low manufacturing cost and large lift coefficient; the rudder efficiency is increased; the course avoidance and the course keeping quality of the conventional rudder at a small rudder angle are improved; and a wide application range is guaranteed.

An upper arm (4b), which constitutes a suspension device for a vehicle, is configured from: a casing (12) which is supported in a manner so as to be able to oscillate relative to a vehicle body; a pair of screw shafts (20) which are supported by the casing (12) in a manner so as to be able to move only in the axial direction; a pair of screw nuts (21) which engage with the perimeters of the screw shafts (20), and which are supported by the casing (12) in a manner so as to be only able to rotate; a worm reduction gear (14) which rotates the screw nuts (21); and a pair of link arms (29a), the base-end sections of which are connected to the tip sections of the screw shafts (20), the tip end sections of which are connected to a knuckle (3), in a manner so as to be able to rotate around the vertical axis of the vehicle. The screw shafts (20) are moved in opposite directions from one another in the axial direction, the angle by which the pair of link arms (29a) are open is altered, and the entire length of the upper arm (4b) relative to the width-wise direction of the vehicle body is altered.

A golf swing training system, including a paddle suitable for hitting with a palm in training to improve one's golf swing, a swing arm attached to the paddle, a base that provides stability, and a spring attached to the swing arm and to the base. Preferably, the spring is removably and / or adjustably attached to the swing arm and / or to the base. Also, methods of using the system.

The invention relates to a cable which comprises conductive core wires and is characterized in that the conductive core wires are made of conductive fibers. The conductive fibers have higher flexibility, so that the flexibility of the cable is improved, and the swinging performance of the cable is improved.

The invention provides a biological incubator, and relates to the field of biology, the biological incubator comprises a box body, the front end of the box body is provided with an isolation door, the inner side of the box body is provided with a motor, the inner side of the box body is provided with a temperature controller, the bottom end of the motor is provided with a bending rod, and the bottom end of the inner side of the box body is provided with a placing table; a culture bottle is installed at the top end of the placing table, a double-layer protruding block is installed on the inner side of the culture bottle, the outer side of the double-layer protruding block is oval, a sliding groove is formed in the top end of the culture bottle, the bent rod is located on the inner side of the sliding groove, a spiral disc is installed on one side of the double-layer protruding block, and the spiral disc is rotationally connected with the inner side of the double-layer protruding block. A plurality of sets of connecting ropes are mounted outside the spiral disc. The device effectively solves the problems that the mixing effect of a medicament and a culture solution is too low, and meanwhile, a stirring rod is likely to collide with cells in a traditional stirring method, so that the cells are damaged.

The invention discloses a crane anti-swing control method based on a frequency converter and the frequency converter. The crane anti-swing control method based on the frequency converter comprises the steps that a speed giving module of the frequency converter receives an issued crane operational order, a crane operational order comprises a target speed Va, and the target speed Va serves as an initial given speed Vb to be sent to an anti-swing module of the frequency converter; the anti-swing module obtains a real-time swing angle theta of hoisting, based on the real-time swing angle theta and the feedback current If obtained by an electric current acquiring module of the frequency converter, the given speed Vb is subjected to real-time amending, and a real-time amended result is output to a motor control module of the frequency converter; and the motor control module drives a motor to operate according to the real-time amended result. According to the crane anti-swing control method based on the frequency converter, the anti-swing function of the crane is directly integrated into the frequency converter, compared with mechanical anti-swing, the cost is low, and maintenance is easy; and compared with a peripheral option type electronic anti-swing scheme, the peripheral electrical design is simple, the cost is low, fault points are less, and meanwhile the effect of controlling weights to swing is better.

Disclosed is a running vehicle comprising a straight drive transmission (53) for transmitting the power of an engine (17) to the left and right running sections (2) and a turning transmission (54) for transmitting the engine power to the left and right running sections while reversing rotation, a straight drive manual operation tool (13) of the straight drive transmission (53), and a turning manual operation tool (10) of the turning transmission, wherein the turning operation mechanism is simplified while turning operation performance is enhanced. A control body (131) rotatable about two axes (P, S) intersecting perpendicularly is provided, and the control body controls the turning transmission to perform turning operation through a turning interlock mechanism (180) by forward / reverse rotation about the first axis (P) caused by the turning operation of the turning manual operation tool, and controls the straight drive transmission to perform a speed change operation by forward / reverse rotation about the second axis (S) caused by the speed change operation of the straight drive manual operation tool, wherein the turning interlock mechanism is equipped with a hydraulic cylinder (193) for operating the turning transmission to turn.