257results about How to "Reduce driving resistance" patented technology

The invention provides a vacuum pipeline docking technology and a high-speed permanent maglev train system. With the station-training docking technology, the door closing time of the maglev train inside the vacuum pipeline can be shortened for scores of seconds, so the rapid on-off can be realized. When a telescopic door and a separation cabin door are withdrawn to be close to the wall of the vacuum pipeline, the high-speed pass of the tray is free from being influenced. The telescopic door is locked by a permanent magnet suction disc, and the locking force is free from being controlled by the electric power, so the gas leakage and pressure relief caused by the invalid locking for sudden power down can be prevented. The energy can be remarkably saved, the energy can be saved by more than 97 percent compared with that of high-speed track train, and the energy can be saved by more than 99 percent compared with that of the airplane.

An optical image stabilizer for a camera lens assembly is disclosed and includes: a board having an image sensor on one surface thereof; a double actuator disposed at one side of the board for moving the board in a first direction and a second direction perpendicular to the first direction on a plane; and a guide means for guiding the movements of the board in the first and the second directions, while preventing the board from rotating about an optical axis of the camera lens assembly. The double actuator for moving the board in two directions is disposed at only one side of the board, so that the camera lens assembly including the optical image stabilizer can be downsized. Further, the guide means permits the board to move only linearly in the first direction and the second direction, thereby preventing the image sensor from rotating around an optical axis and thus improving the reliability of the camera lens assembly.

An elastic-bodied crawler, in which damages, such as local wear, coming-off of driven projections and the like in use, are prevented from being brought about, and frictional resistance is decreased at engaging portions to provide for durability, comprises a body with a reinforcement layer of reinforcement cables embedded therein circumferentially, driven projections provided in a predetermined pitch on an inner peripheral surface of the body, lug portions formed on an outer surface of the body, and reinforcement members (driven projection reinforcement cables) embedded to bridge the driven projections and the body.

The invention discloses an automatic water surface floating object cleaning boat which comprises a boat body, a fishing device, a horizontal conveying device, a saw cutting device, a broken material conveying device, a breaking device and a storing and discharging device. The fishing device is arranged on the head of the boat body is used for fishing floating objects, the storing and discharging device is arranged at the tail of the boat body is used for storing and discharging of materials, the saw cutting device is fixed above the storing and discharging device, the horizontal conveying device is horizontally fixed between the fishing device and the saw cutting device, the breaking device is fixed on the lower portion of the discharging end of the fishing device, the broken material conveying device is obliquely fixed onto the lower portion of the horizontal conveying device, the lower end of the broken material conveying device is positioned below the breaking device, and the high end of the broken material conveying device is positioned above the storing and discharging device. The boat can directly fish floating objects in different directions on the water surface.

The invention provides a rear spoiler which is capable of suppressing an increase in air resistance and applying a downforce to a vehicular rear portion during high-speed vehicle traveling. The rear spoiler (1) on the rear upside of a vehicle includes a main body (2) that is longer in a longitudinal direction than in a width direction. The main body (2) includes an air introduction opening (14) of air currents, and a wing (3) and an air outlet (17) communicating with the opening (14) at the rear. The air currents introduced from the opening (14) during traveling are blown off from the air outlet (17). Consequently, vortex flows generated at the rear is rectified, thus permitting travel resistance to be reduced. Further, the main body (2) is arranged in the vehicular lateral side and hence by rectifying the vortex flows generated by the air currents coming around the vehicular lateral side, the air resistance is restrained from increasing during high-speed traveling, permitting the travel resistance to be reduced.

A dolabriform bow high-speed boat model adhered with wave-elimination-damping wings comprises a dolabriform bow, wherein two symmetrically distributed wave-elimination-damping wings are installed below waterlines on two sides of the dolabriform bow. When a boat sails on the peaceful sea surface or in small storm waves, the wave-elimination-damping wings have a wave-elimination effect, and a lifting force is generated on the wave-elimination-damping wings to raise a boat body, reduce contact area of the boat body and water and reduce friction resistance. Simultaneously, waves generated by the wave-elimination-damping wings and boat-shaped waves can mutually generate favorable interference to reduce wave-making resistance. Effects of the two aspects enable traveling resistance of the boat to be remarkably reduced. When the boat sails in large storm waves, the wave-elimination-damping wings have a damping effect on vertical motion of the boat in waves, so that the boat with the dolabriform bow can have small vertical accelerated speed and small vertical motion amplitude, and seakeeping performance of the dolabriform bow boat model is further improved.

The invention belongs to the field of automobiles and particularly relates to the steering control of an automobile with two axles or more than two axles. A steering control strategy is characterized in that the distance D from a steering circle center to the first axle of the automobile, i.e. the virtual axle distance is taken as a control variable, the position of the steering circle center is determined on the basis in combination with the steering angle of a left front wheel, then the steering angles of remaining wheels are determined and therefore the control strategy of a steering system is simplified. By adopting the control strategy, all wheels are ensured to steer around the same circle center, the slippage of the wheels during automobile steering is reduced and the driving resistance is decreased. According to the steering need during automobile running, one steering control switch can be used for steering control to realize switching of multimode steering.

The invention discloses an electro-hydraulic hybrid power steering system of four-wheel walking machinery and a control method of the electro-hydraulic hybrid power steering system, and relates to thefield of walking machinery. The steering system comprises a steering wheel, a steering wheel deflection sensor, a steering gear, steering knuckles, steering wheel rotation angle sensors, a steering knuckle arm, a steering power-assisted oil cylinder, a front beam, a trapezoidal arm, an oil conveying pipe, an electric cylinder, a left and right transverse pulling rod, a solenoid reversing valve, asteering hydraulic pump, an oil storage tank, an overflow valve and a steering controller. The prototype of a steering mechanism of the steering system is an isosceles trapezoidal connecting rod steering mechanism, and the tail end of each steering knuckle is provided with the corresponding rotation angle sensor; a transverse pulling rod with the fixed length in a traditional steering mechanism is replaced with the electric cylinder; and the steering power-assisted oil cylinder is connected with a steering axle and a left steering arm. By means of the method, through a steering control unit,signal input from the steering wheel deflection sensor, the steering wheel rotation angle sensors and the electric cylinder is received, and the current state of the steering system is analyzed; and stretching and contracting of an electric push rod and a hydraulic cylinder are controlled synchronously, and rotation of a left steering wheel and a right steering wheel conforms to the angle of Ackermann steering geometry constraint.

A compact slider has a reduced area of bearing surfaces, thus substantially decreasing a lifting force obtained through an air bearing characteristic. In one embodiment, a shallowly grooved surface and air bearing surfaces are disposed on an inflow side of a bearing surface of a slider. The air bearing surfaces are connected to each other through a connection air bearing surface. Side shallowly grooved surfaces are respectively disposed rearward of the air bearing surfaces. The side shallowly grooved surface extends up to a point near an outflow end. A center air bearing surface is disposed on the outflow end of the slider. A magnetic head is mounted on the center air bearing surface. A center shallowly grooved surface is disposed on an inflow side of the center air bearing surface. A deeply grooved surface is disposed at a center of the bearing surface. No cutting margins are provided on both sides of the slider. The air bearing surfaces on the inflow side therefore reach end faces in a width direction of the slider.

The invention provides a centrifugal cutter. The centrifugal cutter comprises a cutter body, the top surface of the cutter body is provided with a plurality of blades, which are distributed around the central line of the cutter body in a radiating mode, and the cutter body and the blades are of an integrally formed structure. The invention also provides a grass trimmer. By integrating the blades on the upper portion of the centrifugal cutter, during grass trimming, the internal control circuit board and the motor of the grass trimmer can achieve the aims of air circulation and further cooling, meanwhile, meanwhile, pressure difference can be formed between the top and the bottom of a cutter rest and further micro circulation can be formed to exhaust grass clippings and dust, and further dustproof effects can be achieved.

The invention discloses a large-pipe-diameter manual jacking pipe for space-separated excavation and an excavation construction method applying the jacking pipe. The jacking pipe includes a tool pipeand a concrete pipe, the tool pipe includes a blade feet section and a rectification section, the internal space of the blade feet section is divided by partition plates, the partition plates are composed of a horizontal middle partition and a vertical middle partition plate, the internal space of a steel pipe of the blade feet section is divided into three parts by the partition plats, specifically, an upper first space, an upper second space and a lower third space, and a rectifying device is fixedly connected into the jacking pipe. Through the transformation of the tool pipe, the problems of difficult jacking, large settlement and being prone to collapsing of a traditional jacking pipe in a sand pebble stratum can be solved effectively; the problems that a conventional tool pipe is large in an excavation tunnel face, secondary disturbance is more frequent in the process of manual excavation, and reinforced soil collapses in a bulk mode and falls down together with ungrouted soil atthe same time are avoided; and the efficiency of continuous work in the process of manual pipe jacking can be improved greatly, and the construction period and cost are saved.

The invention discloses a motor train unit and an outer windshield thereof. The outer windshield is arranged on an end wall of a motor train unit body, the outer windshield is fully coated with rubber, is in contact with an outer windshield of an adjacent motor train unit body, is in a circle shape and is arranged around the end wall of the motor train unit body, the outer end surface of the outer windshield is in an arc shape, and two adjacent outer windshields are in linear contact. The outer windshield has the advantages that after the motor train unit bodies are hung, the outer windshields of the adjacent motor train unit bodies are in contact arrangement, the whole end wall is surrounded by the outer windshield, and the gap between the motor train unit bodies along the length and circumference directions of the motor train unit is none, so the connection of the end parts of the whole motor train unit is smooth, the driving drag of the motor train unit is reduced, and the aerodynamics property of the motor train unit is further improved; on this basis, the outer windshields are in linear contact, so the possible friction drag between the adjacent outer windshields is minimized.

The invention discloses a continuous sampling spiral undisturbed soil sampler. The sampler comprises an outer barrel comprising a barrel body and a screw blade arranged on the outer wall of the barrel body, the lower end opening of the barrel body is provided with a cutter; a sampling barrel coaxially arranged with the outer barrel, the sampling barrel relative to the outer barrel is capable of rotating freely, and the lower end opening of the sampling barrel is a soil sample inlet; a locking mechanism arranged on the outer barrel and used for locking the sampling barrel in the outer barrel; a compression bar arranged on the top of the sampling barrel, the compression bar and the sampling barrel rotate synchronously; a driving mechanism, the driving mechanism is used for driving the outer barrel to rotate, wherein when the outer barrel rotates, the cutter of the outer barrel is used for cutting clay to form a cylindrical soil sample, the sampling barrel is used for containing the cylindrical soil sample and when the outer barrel rotates, the screw blade excavates to deeper clay. The continuous sampling spiral undisturbed soil sampler is simple in structure, convenient to operate, capable of sampling continuously without disturbance and used for measuring a series of physicochemical properties and indexes of the physicochemical properties including the moisture content, the permeability coefficient, the coefficient of compressibility and the shear strength of the undisturbed soil sample by experiments.

The invention belongs to the field of automobiles, particularly provides an electric vehicle and a dual-motor planet gear power transmission system thereof and is intended to solve at least one of theproblems of the prior art that wheels of an electric vehicle driven by a single motor cannot output high torque through a reducer and wheels of the electric vehicle driven by the single motor are unsuitable for independent adjustment of driving torque. The dual-motor planet gear power transmission system mainly comprises two power transmission subsystems which are identical; each power transmission subsystem includes a motor and a reducer arranged on an auxiliary frame, and the motor is connected with an axle shaft of the electric vehicle through the reducer such that wheels can be driven torotate. Each reducer mainly includes a single-stage cylindrical gear reduction mechanism and a planet gear reduction mechanism which are in driving connection, the two mechanisms enable the reducer togain a high reduction ratio at the premise of compact layout space, and therefore, the electric vehicle can gain better low-speed performance.

The invention discloses an air boat which comprises a hull.An upper loading support is arranged in a cabin of the hull.A power device is installed on the upper loading support.A deck of the hull bends forward and is in a shape that the front is low and the rear is high.The power device is located at the one-third position of the rear portion of the hull.After the hull is in water, the deck is in a horizontal state naturally, and the axis of a rotating shaft of the power device is parallel to the plane of the hull bottom.Supra polymer PE plates are attached to the hull bottom and the two sides of the hull.The supra polymer PE plates and the hull are fixedly connected through countersunk head self-tapping screws and sealant.Power performance of the air boat is improved, the bearing ability of the hull is improved, and advancing resistance of the hull in the complex environment is reduced.

The invention relates to the technical field of engineering machinery and discloses backfilling equipment for a saline-alkali land closed conduit trench. The backfilling equipment comprises a pedestal. A power device is mounted on the right side of the top of the pedestal; two sets of rollers are mounted on the center position of the bottom of the pedestal; a top plate is installed on the top of a hydraulic rod; the left side of the top is provided with a damping device; the left side of the damping device is provided with a soil baffle plate; a soil pushing plate is arranged on the bottom of the soil baffle plate; an adjusting device is mounted on the bottom of a cavity of the power device; a scraping plate is arranged on the bottom of the adjusting device; the soil pushing plate can be controlled by a hydraulic device to move up and down, so soil can be backfilled once for all; a corrosion-resistant layer can prevent saline-alkali in the saline-alkali land corroding the soil pushing plate; with a wear-resistant layer, the soil pushing plate cannot shorten service life due to long time use; the backfilling equipment can be conveniently used; and backfilling can be achieved, the land can be flattened, and the backfilling equipment has long service life.

The invention discloses an integrated formula car diffuser with additional side wings. The diffuser adopting an integrated structure comprises a left-part side wing main wing, a right-part side wing main wing, a left-part side wing flap and a right-part side wing flap, wherein the left-part side wing main wing and the left-part side wing flap are in front-rear arrangement in a manner that an angle a and an angle b are respectively formed between the left-part side wing main wing and a level surface and between the left-right side wing flap and the level surface through a left-part left-end plate and a right-part right-end plate, the right-part side wing main wing and the right-part side wing flap are in front-rear arrangement in a manner that an angle a and an angle b are respectively formed between the right-part side wing main wing and the level surface and between the right-part side wing flap and the level surface through a right-part left-end plate and a right-part right-end plate, and two side wing components, of the diffuser, which are symmetrically arranged, are formed; a left flow deflector and a right flow deflector which are in V-shaped arrangement are arranged between the two side wing components, the left flow deflector and a left surface form a left guide groove, and the right flow deflector and a right surface form a right guide groove. According to the diffuser disclosed by the invention, the downward pressure of the car can be increased, and besides, the centre of gravity of the car is moved forwards, so that understeer of the car is avoided, besides, the impact of air currents on rear wheels of the car is avoided, and the running resistance of the car is reduced.

The invention discloses a turbofan-type double-blade horizontal axis axial torque balance wind turbine generator which comprises a spindle, an inner rotor impeller group, an outer rotor impeller group, a generator outer rotor shell, an armature collector ring, an electric brush, an electric brush wiring terminal, an excitation conductive sliding ring, an excitation sliding ring electric brush, an electric brush wiring terminal, a fixed single-side end cover and a base frame. According to the generator, the outer rotor impeller group and the inner rotor impeller group are not superposed along the wind direction, so the wind energy can be effectively captured; and moreover, the forward and backward impellers are utilized, so that the rotor and stator of the generator rotate simultaneously, the relative rotating speed is increased, and the power generation efficiency is improved.

The invention discloses an adjustable spoiler system of a formula car. The adjustable spoiler system mainly comprises a main wing rear wing, flap rear wings, end plates, four-rod mechanisms, steering engines, main wing inner supporting plates and flap inner supporting plates. Spoilers adopt an upper rear wing spoiler, a middle rear wing spoiler and a lower rear wing spoiler which are separately the main wing rear wing and the two flap rear wings. The two ends of all the rear wings are each provided with the corresponding end plate. The two ends of the three rear wings are each internally provided with the corresponding wing inner supporting plate which is formed through bonding. The steering engines are fixed to wing inner supporting plates in rear wings. The lower main wing rear wing and the middle flap rear wing as well as the middle flap rear wing and the upper flap rear wing are both connected through the four-rod mechanisms. During turning of the racing car, the steering engines are controlled through a steering wheel rotating angle signal to drive the four-rod mechanisms so as to change flap attach angle transformation, and down force is increased; and during linear travelling, the steering wheel rotating angle signal recovers to a zero state and controls the steering engines to recover to original states so as to the drive the four-rod mechanisms to recover the flap attach angles, and travelling resistance is decreased.

The invention relates to a suspension system for amphibious vehicles and belongs to the field of vehicle engineering. The suspension system comprises a suspension guide mechanism lower cross arm, a suspension guide mechanism upper cross arm, a spring, an electric cylinder, a steering knuckle, a wheel and a shock absorber, and a peripheral part comprises a vehicle body. The wheel is connected with the steering knuckle, the lower end of the steering knuckle is in hinged connection with the suspension guide mechanism lower cross arm, the upper end of the steering knuckle is in hinged connection with the suspension guide mechanism upper cross arm, the middle of the suspension guide mechanism lower cross arm is in hinged connection with the shock absorber, the right end of the suspension guide mechanism upper cross arm is in hinged connection with the vehicle body, the electric cylinder is used for providing power for retracting the wheel by means of retractable movement and is locked by means of reverse self locking, the spring and the shock absorber are parallelly connected on the lower portion of the electric cylinder, and a suspension guide mechanism and the electric cylinder are respectively in hinged connection with the vehicle body. Driving resistance of the amphibious vehicles in water can be fundamentally reduced, and driving speed of the amphibious vehicles in water can be increased.

The invention discloses a combined drop-driven biological rotating disk reactor which comprises a tank body (1), wherein the tank body (1) comprises a rotating disk region (2) and a drive region (3); a rotating disk (201) is arranged in the rotating disk region (2) through a rotating shaft (6); a drive disk (301) for driving the rotating disk (201) to rotate is arranged in the drive region (3); the liquid level of the drive region (3) is arranged below the drive disk (301); the bottom of the drive region (3) is provided with an auxiliary filler oxidation region (302) for degrading the sewage; and the front end of the auxiliary filler oxidation region (302) is provided with a water outlet tank (303) for controlling the liquid level of the drive region (3). By adopting the drive disk and rotating disk function division, the liquid level of the drive region is on the bottom of the drive disk, thereby eliminating the resistance of water to the drive unit, enhancing the rotation speed of the rotating disk, and obviously enhancing the oxygenation rate. The auxiliary oxidation filler region is utilized to reinforce the removal of organic substances in the sewage, thereby being beneficial to enhancing the nitrification properties of the reactor.

The invention discloses arid desert soil haloxylon ammodendron planting auxiliary apparatus based on water pressure slotting. The apparatus comprises a supporting carrier plate, wherein the right sideof the top of the supporting carrier plate is fixedly connected with a driving side frame, a limiting rail is fixedly connected with the middle of the front face of the driving side frame, a limitingsliding block is connected with a vertical position inside the limiting rail in a slide manner, a transmission connecting rod is fixedly connected with the outer side of the front face of the limiting sliding block, one end, away from the limiting sliding block, of the transmission connecting rod is fixedly connected with a supporting bearing, an auxiliary tunneling mechanism is rotationally connected with the inside of the supporting bearing in a penetration manner, a limiting pipe insertion mechanism is fixedly connected with the bottom of the transmission connecting rod, a storage arc groove is formed in the top of a supporting frame, and a force storage inclined plate is fixedly connected with the right side of the top of the supporting frame. The invention relates to the technical field of planting. According to the arid desert soil haloxylon ammodendron planting auxiliary apparatus based on water pressure slotting, the operation of workers is facilitated, dry sandy soil adheresand condenses together through water, and thereby the high-strength wrapping performance of soil and plant roots is guaranteed.

The invention discloses a reciprocating showing type advertisement player with a solar cell panel. The advertisement player comprises a box, a left motor, a left winding shaft, a right motor, a right winding shaft and an advertisement canvas. A vision window is arranged on the box. A transparent glass plate is arranged at the vision window. The left winding shaft and the right winding shaft are arranged inside the box and located on the left side and the right side of the vision window respectively. The two ends of the advertisement canvas are wound around the left winding shaft and the right winding shaft respectively. The left motor is used for driving the left winding shaft to rotate, and the right motor is used for driving the right winding shaft to rotate. The advertisement player further comprises a sun shield, wherein the sun shield is arranged on the top of the box. The advertisement player further comprises the solar cell panel. The solar cell panel is laid on the surface of the sun shield. Due to additional arrangement of the sun shield, the advertisement machine is shielded from the sun, and the advertisement player can also be a shelter for pedestrians from wind and rain; due to additional arrangement of the solar cell panel, all electrical appliances of the advertisement machine can be powered on.

The invention discloses an online shopping goods storage machine with an energy-saving type advertisement machine. The online shopping goods storage machine comprises a cabinet body, a two-dimensional code scan control device and an advertising machine, the advertising machine is arranged on the back of the cabinet body, multiple goods storage grids are distributed on the front side of the cabinet body from the bottom to the top, and the lowermost goods storage grid is the largest, the uppermost goods storage grid is the smallest, cabinet doors and cabinet door electronic locks are arranged on each goods storage grid; the advertising machine, comprises a box body, a left motor, a left winding shaft, a right motor, a right winding shaft and an advertising canvas, the left winding shaft and the right winding shaft are arranged in the box body and are respectively located on the left side and the right side of a viewing window; the online shopping goods storage machine further comprises a left coupling device and a right coupling device, the output shafts of the left and the right motors are respectively connected with one ends of the left and right coupling devices through a left unilateral shaft and a right unilateral shaft, when the left motor is started, the output shaft of the right motor is not turned, and when the right motor is started, the output shaft of the left motor is not turned. Thus the drive resistance is reduced, and electricity is saved.

The invention discloses a rapid ship mooring structure which comprises a set of mooring structure supports, a cleaning structure and a ship body, the ship body is located between the set of mooring structure supports, the mooring structure and the cleaning structure are arranged on the adjacent faces of the mooring structure supports, and the mooring structure is located on the upper side of the cleaning structure. According to the rapid ship mooring structure, the mooring structure and the cleaning structure are arranged, the mooring structure is used in cooperation with the multiple clamping plates through three sets of hydraulic telescopic devices, the moored ship can be rapidly berthed, the radian of the clamping plates can be adjusted to adapt to ships of different sizes, and the cleaning structure is convenient to use. Meanwhile, the ship body can be protected through buffer rubber, the ship body can be rapidly and safely berthed, the mooring speed is increased, the mooring reliability is improved, meanwhile, a cleaning plate of the cleaning structure makes contact with the ship body through a hydraulic telescopic device, a heating plate is embedded in the cleaning plate in order to remarkably improve the cleaning effect of the cleaning plate, and the heating plate and a cleaning ship brush act in a matched mode.