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 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.

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.

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.

A memory unit is proposed. The memory unit includes a Si substrate, a trapping layer formed on the Si substrate, a first and a second doping regions formed in the Si substrate on either side of the trapping layer, a gate formed on the trapping layer, a first oxide layer formed between the gate and the trapping layer, a high-Dit material layer formed between the Si substrate and the trapping layer, and a second oxide layer formed between the high-Dit material layer and the trapping layer, wherein an interface trap density (Dit) between the high-Dit material layer and the Si substrate is in a rang from 1011 cm−2eV−1 to 1013 cm−2eV−1.

The invention discloses a tower crane, and a method, a device and a system for controlling a slewing mechanism of the tower crane. The system comprises a controller, a frequency converter, an intelligent eddy current control module, an eddy current device and a motor, wherein the motor is used for driving a slewing mechanism of the tower crane to act; the frequency converter is used for feeding back moment current parameters of the load moment of the motor to the controller; the controller is used for determining actual output eddy current parameters according to the moment current parameters; the intelligent eddy current control module is used for regulating eddy current applied to the motor by the eddy current device according to the actual output eddy current parameters. According to the system for controlling the slewing mechanism of the tower crane, provided by the invention, the abnormal situations such as jittering and slewing difficulty caused by influence on a slewing dragging system of the tower crane due to factors such as wind force and friction force can be eliminated.

The invention discloses a positioning control method, device and system for an under-activated marine crane within finite time. The method comprises the steps of (1) constructing a two-order sliding mode surface based on a kinetic model of a drivable portion of a marine crane system, and introducing a nonlinear bounded function relevant to a positioning error signal to construct a nonlinear controller; (2) receiving physical parameters of the set marine crane system; (3) receiving boom pitching angle, rope length, load tilt angle and hull roll angle due to sea wave interferences, which are acquired in real time; (4) inputting the received data to the nonlinear controller, and calculating and controlling boom pitching and rope length input force and torque; (5) driving a boom and a rope tomove to a target position within finite time, thereby eliminating residual rocking of a load.

The invention discloses an intelligent control system and control method of liquid tank sloshing control. The intelligent control system of the liquid tank sloshing control is mainly composed of a liquid level detector, a sloshing control plate, a pressure sensor, a controller and a plurality of hydraulic adjusting rods, wherein the sloshing control plate is driven by the hydraulic adjusting rodsto move up and down in a liquid tank, and the controller controls the hydraulic adjusting rods in real time mainly according to data detected by the liquid level detector and the pressure sensor to drive the sloshing control plate to be at an appropriate position in the liquid tank so as to lower the liquid tank sloshing to the lowest position. In the control method, the situation of the liquid level is detected in real time, the position, where the sloshing control plate is located, in the liquid tank is controlled according to the detected situation of the liquid level, and the sloshing control effect can be greatly improved. The intelligent control system of the liquid tank sloshing control has the advantages that the structure is simple, the design is reasonable, using is convenient, the sloshing control effect is good, and the cost is low.

The invention discloses a differential chain production assembly line for double speed converting regulation of a separation distance chain wheel for lamp transportation. The differential chain production assembly line structurally comprises a chain wheel correcting case, a bottom frame plate seat, a transverse stay bar, a differential chain belt, a worktable bracket, a shaft driving motor and a baffle plate shell rack. The differential chain production assembly line achieves ring-by-ring adjusting and correcting effect by matching the chain wheel correcting case with the differential chain belt, and front and back pressing double speed of a double roller bearing are formed to improve a rotating effect, so that an elastic stretching effect of teasing to prevent uptightness is obtained by means of bottom side single-sided displacement chain movement, the friction property of a cotton cover is avoided, an effect that a rod end is pressed out of a smooth end cap is achieved, and the chainbelt deviating a track can be corrected ring by ring to reset the track as a low position obtained by a vertical diameter theorem of a disc is knocked by a hammer head cap of a roller ball, so that transportation of the integral lamp is not intervened and a separation distance chain wheel double speed small box body regulating effect is achieved. An effect that a potential magnetic plate pushes abearing roller to accelerate and rotate is achieved, the integral tensile force of the differential chain is improved, and chain wheel maintenance is enhanced.

The invention provides a tracking control method and system for a two-stage swing type tower crane system, relates to the technical field of tower crane control, and aims to obtain the current positions and rotation angles of a cantilever and a trolley of the two-stage swing type tower crane system. The method is characterized in that disturbance effect indexes of a load and a lifting hook are obtained according to the current positions and rotation angles of a cantilever and a trolley and a power equation of a two-stage swing type tower crane system; when the disturbance effect index is larger than a preset threshold value, transient control over the cantilever and the trolley is conducted jointly according to the disturbance quantity estimated value and a preset tracking control model; otherwise, transient control over the cantilever and the trolley is conducted according to a preset tracking control model. The method is advantaged in that the method guarantees precise tracking control performance of the trolley and the cantilever, guarantees quick inhibition and elimination of a swing of the lifting hook and the load, judges whether the designed robust tracking control method eliminates or reserves disturbance or not according to the introduced interference effect index, and effectively improves transient control performance of a system.

The invention discloses a rotary cushion valve device, a speed reducer and a use method of the speed reducer. The speed reducer and the rotary cushion valve device each comprises a first oil way, a second oil way, an adjustable one-way throttle valve, a shuttle valve and a one-way throttle valve, wherein the first oil way comprises a first two-way balance valve and a first cushion type overflow valve which are connected; the second oil way comprises a second two-way balance valve and a second buffer type overflow valve which are connected with each other; two ends of the shuttle valve are connected with oil ports of the first two-way balance valve and the second two-way balance valve, and are connected with an oil port of the adjustable one-way throttle valve; and the one-way throttle valve is connected with the oil ports of the first two-way balance valve, the second two-way balance valve and the shuttle valve. The whole rotation process is more stable, rotation impact of the rotationspeed reducer at the moment of starting and stopping of rotation operation is reduced, shaking is slowed down, and the operation hand feeling is improved.

The invention belongs to the technical field of civil engineering structures, and relates to a reinforced concrete swing wall component with bolt type connection. A reinforced concrete swing wall is connected with a main body frame structure through a bolt by ductile connecting pieces, replacement after an earthquake is convenient, and an energy-dissipating capacity of the structure under a major earthquake is facilitated to strengthen; a rubber pad is adopted between a swing wall and a foundation beam, so that the swing performance of a wall body is effectively promoted, and the replacement is convenient. The reinforced concrete swing wall component with the bolt type connection is simple and convenient to construct, the cost is low, the structure repairing after the major earthquake is convenient, and the reinforced concrete swing wall component with the bolt type connection can be used for the seismic reinforcement of the existing structure and also applied to earthquake resistance and shock absorption of newly-built buildings.

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.

The invention discloses a disposable hemoperfusion device swinging device. The disposable hemoperfusion device swinging device comprises a base, a driving motor, an eccentric wheel, a positioning block and a hemoperfusion device clamping mechanism, wherein the driving motor is fixedly installed on the base; a rotating shaft is arranged at the output end of the upper end of the driving motor; and the eccentric wheel is arranged at the upper end of the rotating shaft. The driving motor, the eccentric wheel, the swing rod and the hemoperfusion device clamping mechanism are arranged and used in cooperation, the driving motor is started, the motor is started to drive the eccentric wheel to rotate, and the hemoperfusion device clamping mechanism located at one end of the swing rod swings up and down; by means of a first spring at the lower end of the hemoperfusion device clamping mechanism, the first spring drives the hemoperfusion device clamping mechanism to transversely swing while the hemoperfusion device clamping mechanism swings up and down, and the blood swinging effect in the hemoperfusion device can be effectively improved; and by arranging the variable-speed motor, the medical staff can adjust the variable-speed motor according to the required swinging speed so as to meet different swinging requirements.

A ship line of a kilo-tonnage bulk carrier comprises a bulk carrier hull, wherein the bulk carrier hull comprises a hull front part (1), a hull middle part (2) and a hull rear part (3); the hull frontpart (1) is a vertical bow of which the cross-section is of flaring side structure and of a medium U-shape; the hull middle part (2) is a parallel middle body which is smoothly connected with the hull front part (1); the hull rear part (3) is a square stern which comprises an outflow section (31) and a stern transition section (32); and the outflow section (31), the stern transition section (32)and the parallel middle body are smoothly connected. The technical scheme provided by the invention enables the kilo-tonnage bulk carrier to have a lower resistance under the condition of same tonnageand load capacity, so as to increase the speed of the bulk carrier and improve the economical efficiency of the bulk carrier.

The invention relates to a welding centering device for a tower crane swing mechanism. The welding centering device comprises a central rotating shaft, tensioning sleeve discs connected with the central rotating shaft in a sleeving manner, and at least three tensioning connecting rod assemblies connected with the tensioning sleeve discs, and the tensioning connecting rod assemblies are uniformly distributed along the circumferential direction of the tensioning sleeve discs. The tensioning connecting rod assemblies comprise rotatable eccentric tensioning wheels, and the outer edges of the eccentric tensioning wheels make contact with an inner ring of a swing supporting seat on the tower crane swing mechanism. The invention provides a welding fixture, and the welding centering device for thetower crane swing mechanism is applied to the welding fixture. According to the welding centering device for the tower crane swing mechanism and the welding fixture, the swing supporting seat can beself-centered in the welding process and always coincides with the design center of the tower crane swing mechanism, then the swing error of the tower crane swing mechanism is reduced, and the swing performance of a tower crane is improved.

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 provides a reinforced type aligning roller bearing rotary repairing tool and method. The tool comprises an upper pressing die, an upper guide column, a lower supporting die, a lower guide column and a fastening screw, wherein the upper pressing die is in a ladder shaft shape and is provided with a blind hole which is the same as a reinforced type aligning roller bearing to be repaired in inner diameter size; the upper guide column is cylindrical and the diameter of the upper guide column is the same as the inner diameter of the reinforced type aligning roller bearing to be repaired; the upper guide column is in clearance fit with the reinforced type aligning roller bearing to be repaired; the diameter of the upper guide column is the same as that of the first blind hole, and the upper guide column is in transition match with the first blind hole; the lower supporting die is cylindrical and the lower guide column is in a ladder shaft shape; the large-diameter cylindrical surface is in interference fit with the inner diameter of the blind hole of the lower supporting die; and the small-diameter cylindrical surface is in clearance fit with the inner diameter of the reinforced type aligning roller bearing to be repaired. The invention discloses the repairing method. The repairing efficiency is high and the reinforced type aligning roller bearing to be repaired is arranged on the repairing tool; and after an iron hammer or a small-size pressure machine is used for applying force, repairing can be finished in one step, so that the repairing efficiency is improved and the rotary consistency of the repaired bearing is good.

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.

The invention belongs to the technical field of bearing equipment manufacturing, and particularly relates to a plastic retainer for a double-row deep groove ball bearing and a bearing thereof, the plastic retainer comprises a retainer body, the retainer body is provided with pockets for placing steel balls, the pockets are opened towards one side, a connecting section is arranged between every two adjacent pockets, and the connecting section is connected with the retainer body. A weight reduction groove is formed in the side, away from an opening of the pocket, of the connecting section, and the two ends of the weight reduction groove are in fillet transition with the end face of the retainer body. According to the retainer, the overall rotation performance of the bearing can be improved under the condition that the center of the bearing is guaranteed.

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.