134results about How to "Reduce moment of inertia" patented technology

The invention relates to an aircraft (1), preferably an unmanned aircraft (UAV), drone, or unmanned aerial system (UAS), comprising a rigid wing (2), which enables aerodynamic horizontal flight, and at least four rotors (4, 4'), which are driven by means of controllable electric motors (5) and which can be pivoted between a vertical starting position and a horizontal flight position by means of a pivoting mechanism (7), wherein all electric motors (5) and rotors (4) are arranged on the wing (2).

The invention discloses a double-stator magnetic field modulation permanent magnet motor comprising an inner stator, an outer stator, and a rotor. Air gaps are formed between the rotor and the inner and outer stators. The rotor is formed by magnetic conductors and non-magnetic conductors which are arranged alternately. The outer stator is formed by outer stator teeth, radial magnetizing permanent magnets, and an armature winding. The radial magnetizing permanent magnets adhere to the inner surfaces of the outer stator teeth. Adjacent permanent magnets on the same outer stator tooth have opposite magnetizing directions. The inner stator is just formed by inner stator teeth equipped with grooves along the circumferential direction and an armature winding in the grooves while not being provided with any permanent magnet. According to the double-stator magnetic field modulation permanent magnet motor, the two armature windings are used while the amount of the permanent magnets is not increased. Thus, an armature magnetic field is fully utilized and a power factor and the power density are increased. Compared with a product in the prior art, the double-stator magnetic field modulation permanent magnet motor is not provided with a rotor magnetic conductive yoke portion, decreased in rotor size and iron loss, and increased in the power density and efficiency, and can be used in power systems such as electric automobile, wind power generation or the like.

The invention relates to a bionic mechanical eyeball based on a spherical ultrasonic motor. The bionic mechanical eyeball consists of an eyeball, three stator mechanisms and a base plate, wherein a mini-sized CMOS (Complementary Metal Oxide Semiconductor) camera and an attitude sensor are loaded in the eyeball, each stator mechanism consists of a tooth-shaped annular elastomer and a compressing mechanism, and a piezoelectric ceramic piece is attached to the tooth-shaped annular elastomer and the compressing mechanism is used for generating a pressing force; the eyeball is contacted with internal tooth circles of the tooth-shaped annular elastomers of the three stator mechanisms respectively in a tangential manner and is subjected to compressing and centering by each compressing mechanism; and meanwhile, the three stator mechanisms are vertically fixed on the base plate and symmetrically distributed by rotating around a center shaft for 120 degrees, and an included angle between the plane where the eyeball and a contact circle of each stator mechanism are located and the base plate surface is 65 degrees. According to the bionic mechanical eyeball based on the spherical ultrasonic motor, the structure is simple and compact, the response speed is quick, the control precision is high, and the visual angle of the mechanical eyeball reaches 50 degrees; and the bionic mechanical eyeball based on the spherical ultrasonic motor can be applied to various complex visual systems.

The invention discloses a smart quadruped robot with a flexible waist. The smart quadruped robot with the flexible waist comprises a front body, a rear body, a waist mechanism, crotch mechanisms and leg mechanisms. The front body and the rear body are connected through a split Hooke joint, so that relative deflection and pitching of the front body and the rear body are realized. The front body and the rear body are respectively provided with two crotch mechanisms, wherein output shafts of the crotch mechanisms are made to face the outer side of the bodies so that the leg mechanisms can be installed; the output shafts are meshed with bevel gears between transmission shafts for transmission, so that the output shafts are driven through rotation. A fixed shaft is fixed to each crotch mechanism, and the fixed shafts are driven to rotate to rotate a gearbox; in this way, the leg mechanisms can swing front and back as well as up and down. Each leg mechanism comprises a thigh part and a calf part, wherein each thigh part and each calf part are connected through a knee joint; transmission of the knee joints is realized through two bevel gears, so that the calf part made to swing front and back relative to the thigh part. The smart quadruped robot with the flexible waist has the advantages that the capability of passing through a mountain environment of the robot can be improved, the turning radius in the advancing process is reduced, rotational inertia of legs of the robot is reduced, and the energy utilization rate is increased.

The invention provides a leg configuration for a rotatably driven three-dimensional walking robot. The leg configuration comprises a rack, a leg telescoping mechanism, a parallel drive mechanism, and a rotatably driven mechanism. The rotatably driven mechanism is connected with the parallel drive mechanism in a driving manner. The parallel drive mechanism is connected with the leg telescoping mechanism in a driving manner. The leg telescoping mechanism is connected with the rack. The leg configuration for a rotatably driven three-dimensional walking robot has special dead point postures, and under the postures, ground impact force stressed by toes cannot be transmitted to a driver, so the robot has very good impact resistance and load resistance capability. The leg configuration solves problems of impact resistance for a robot to work in complex terrain and poor environment operating conditions.

The object is to provide an injection molding machine driving device capable of generating a large thrust and of continuous drive with a short cycle. It comprises a casing body (11), a cylindrical linear motor (14) provided with a mover (12) disposed in the casing body (11) for advance and retraction and a stator (13) attached to the casing body (11), the linear motor (14) constituting a first drive section, a driven body (15) advanced and retracted together with the mover (12), and a second drive section attached to the casing body (11) and disposed so as to axially overlap the linear motor (14) at least partially. A slight axial increase in the radial dimension makes it possible to sufficiently increase the area of a permanent magnet (23) for the mover (12), thus increasing the capacity of the linear motor (14).

The invention relates to a cantilever mechanism for piezoelectric power generation. The cantilever mechanism comprises a base (1), an elastic substrate (2), a piezoelectric material thin sheet (3), mass blocks (4) and a wire, wherein one end of the elastic substrate (2) is connected with the base (1), the piezoelectric material thin sheet (3) is laminated with the elastic substrate (2), the mass blocks (4) are arranged at one end, far away from the base (1), of the elastic substrate (2), an electrode (31) and an electrode (32) are arranged on the surface of the piezoelectric material thin sheet (3), an electrode cutting line (33) is arranged between the electrode (31) and the electrode (32), the electrode cutting line (33) is formed in an area in a middle line in the direction from the base (1) to the mass blocks (4), wherein the electrodes are not arranged in the area. The mass blocks (4) are symmetrically distributed and arranged relative to the electrode cutting line (33), and the cantilever mechanism for piezoelectric power generation has multi-mode characteristics and broadband characteristics.

The invention relates to a wet clutch, comprising a first sub-clutch, a second sub-clutch and a clutch cover. The first sub-clutch and the second sub-clutch are respectively provided with an inner sheet bearing member and an outer sheet bearing member, the inner sheet bearing member is connected with a rotor without relative rotation, the outer sheet bearing member is respectively connected with a second transmission input shaft, the axial exterior of the first outer sheet bearing member of the first sub-clutch is enclosed by the seond outer sheet bearing member of the second sub-clutch, the outer sheets are respectively connected with the corresponding outer sheet bearing members without relative rotation and in an axial movable manner, the outer sheet bearing members are respectively provided with tooth areas, thereby the outer radius of the second outer sheet bearing member is larger than the inner radius of the first outer sheet bearing member.

The invention discloses a centrifuge used in a multi-parameter complex test environment. The centrifuge comprises a stand, a driving motor, an arm, a transmission mechanism and a dynamic balance executing mechanism, wherein the arm is provided with a web plate; the transmission mechanism comprises a belt transmission mechanism and a gear mechanism; the gear mechanism comprises a pinion which is coaxial with a driven pulley and a bull gear which is fixedly connected with the arm; the upper surface of the bull gear is contacted with the bottom surface of the arm; the lower surface of the bull gear is provided with an annular groove for accommodating a thrust ball bearing capable of providing axial support for the bull gear; the bull gear is connected with the stand through the thrust ball bearing; a gap is reserved between the lower surface of the bull gear and the stand; the bull gear is provided with a through hole; the bottom of the through hole is extended inwards to form a step for arranging an angular contact ball bearing; a cover plate which is fixedly connected with the stand to compress the angular contact ball bearing is arranged above the angular contact ball bearing; and the driving motor and the transmission mechanism are arranged in the stand. The centrifuge has the advantages of small space occupied by the body, high capacity of the arm and capability of carrying various environmental chambers and realizing adaptive dynamic balance of the arm.

The invention discloses a force feedback main manipulator for minimally invasive surgery. The force feedback main manipulator comprises a first parallelogram structure, a second parallelogram structure, an attitude adjusting mechanism and a clamping mechanism; the first parallelogram structure and the second parallelogram structure are both formed by a plurality of rod pieces which are sequentially hinged end to end; a first hinging point of the first parallelogram structure is coaxial with a first hinging point of the second parallelogram structure; a second hinging point of the first parallelogram structure is connected with a second hinging point of the second parallelogram structure through a connecting rod; the tail end of the second parallelogram structure is a wrist part, wherein the wrist part can be keep horizontal under connection of the first parallelogram structure and the second parallelogram structure; the wrist part is hinged with the attitude adjusting mechanism; and the attitude adjusting mechanism is hinged with the clamping mechanism. The force feedback main manipulator provided by the invention can meet the requirements of minimally invasive surgery, conforms toergonomics, has a force feedback function and is low in cost.

The invention discloses a direct molding process for a hot-extruded hollow axle. The process comprises pipe inspection and processing, gradient heating treatment, mold loading, horizontal and radial loading, integral heating after demolding, mold reloading and reloading, wherein direct variable-diameter hot extrusion forming of the hollow axle is effectively finished after repeating the steps are repeated and the inspection treatment is performed. The direct molding process has the advantages of reasonable process design, simple mold structure, high upsetting speed, high yield, good use effect and low cost, and is particularly suitable for large-scale industrial production of high-speed train axles. The weight of the axle is reduced greatly, and the strength and torque force of the hollow axle are effectively enhanced and ensured.

The invention discloses a light detection machine foreign matter detection device, which comprises a light detection plate for holding bottle bodies, wherein the light detection plate is provided with more than one detection station; each detection station is provided with more than two groups of light detection camera groups near the bottle bodies on the light detection plate; and each light detection camera group respectively corresponds to one group of bottle bodies arranged at intervals. The invention also discloses a light detection machine foreign matter detection method, which comprises the following steps: dividing a plurality of detection stations along the light detection plate; on each detection station, shooting and detecting all bottle bodies which pass through the detection station once; arranging more than two groups of light detection camera groups near the bottle bodies on each detection station; and respectively shooting and detecting one group of bottle bodies distributed at intervals by each light detection camera group. The light detection machine foreign matter detection device has the advantages of simple and compact structure, long service life, low noise and the like.

The invention relates to a die cushion device (50) for a forming press (51) for generating a blank retaining force (F53) between a bottom die (5) and a top die (3). Said die cushion device (50) comprises at least one hybrid drive unit (52) which acts upon at least one blank holder (4) of the bottom die (5) and is formed by at least one first drive unit and at least one second drive unit. The first drive unit and the second drive unit form a die cushion module (9) that encompasses a part, by means of which the blank holder (4) can be moved upward and downward by at least one of the drive units. A downward pressure that can be transmitted from the top die (3) to said part and causes a descending movement can be blocked or decelerated only by the first drive unit in order to prevent the second drive unit from being overloaded, the part being disconnectable from the second drive unit during the descending movement.

A drive train (10) for a motor vehicle (11), with a first electric machine (12) for providing driving power, wherein the first electric machine (12) is connected to an electric power accumulator (32); a differential (16) which can distribute driving power to two driven wheels (18L, 18R) or axles of the motor vehicle (11); a first transmission arrangement (14) which connects the first electric machine (12) to the differential (16); an internal combustion engine (20); a second electric machine (24) which is coupled to the internal combustion engine (20) in order to charge the electric power accumulator (32) in a generator mode; and a second transmission arrangement (22) which connects the internal combustion engine (20) to the differential (16); wherein the second transmission arrangement (22) has a first gear stage (G1) and a second gear stage (G2) which are alternatively switchable by means of a clutch arrangement (60) for transmitting driving power from the internal combustion engine (20) to the differential (16).

The invention relates to an automobile braking device, in particular to an eddy current retarder with a torsional vibration reduction function. The eddy current retarder with the torsional vibration reduction function comprises a stator, an upstream rotor and a downstream rotor, wherein the upstream rotor is used for being connected with an automobile gear box, the downstream rotor is used for being connected with a transmission shaft on the front end of a rear axle, and a vibration reduction buffering device used for being connected with the transmission shaft on the front end of the rear axle is arranged on the downstream rotor. During operation, a torsional countermoment which is instantaneously generated acts on the vibration reduction buffering device, so as to reduce torque impact which is instantaneously generated through the buffering and damping effects of the vibration reduction buffering device, thereby achieving the purpose of reducing impact and vibration; in addition, when the retarder is not braked, the vibration reduction buffering device is connected into a transmission system in series, so as to be favorable for reducing torque fluctuation which is generated by an engine and a shafting space angle and improving the NVH (Noise, Vibration and Harshness) performance of the transmission system. In conclusion, by using the eddy current retarder, vibration and noise caused by the retarder to an automobile can be reduced.

The vane for a wind energy installation is equipped with collecting devices and comprises at least two parts so that a hollow space is formed, in which devices are placed for collection of dust, particles or loose objects. The collecting dvices consist of a container with a funnel-shaped opening, with a valve or adhesive surfaces on the inside. The devices may also be a kind of filter positioned between chambers inside the vane.

An electric straddled vehicle which has, despite the fact that the vehicle is a lightweight and inexpensive vehicle using a small-sized, highly versatile motor, the balance of weight in the left-right in the width direction of the vehicle relative to the vehicle body centerline is optimized. An electric motor (250) is disposed within a cantilever swing arm (214) at a position at which, when viewed from a side of the vehicle body, the electric motor is superposed on the region in which a rear wheel (WR) is projected. A motor driver (216) is disposed within the swing arm (214) so as to straddlethe vehicle body centerline (C) at a position in front of the rear wheel (WR) relative to the vehicle body. The motor driver (216) is disposed in such a manner that the position (G2) of the center ofgravity thereof is offset to the side opposite to the side to which the electric motor (250) is offset from the vehicle body centerline (C). The motor driver (216) is provided behind a rocking shaft (215) relative to the vehicle body at a position close to the rocking shaft (215) and is inserted and mounted to a recess (308) open to the upper surface side of the swing arm (214). An FET (316) for conducting and interrupting an electric current to the motor is at least supported on the lower surface of a lid member (264) of the motor driver (216).

The invention provides a driving and brake integration system based on a wheel hub motor. The driving and brake integration system based on the wheel hub motor comprises a wheel hub motor driving system, an electromagnetism and friction braking system and a finished automobile control system, wherein the wheel hub motor driving system comprises a car axle, a motor stator, a wheel hub, a motor rotor and a brake disc, the motor stator is coaxially welded with the car axle, and the wheel hub is connected with the motor stator via a bearing; the shell of the motor rotor is fixedly connected with the wheel hub; the motor rotor is fixedly connected with the brake disc. According to the driving and brake integration system, the motor rotor is adopted to directly drive the wheel hub, the driving and brake integration system has the advantages of simple structure and high transmission efficiency, the rotation moment and the rotation inertia of an automobile are reduced, the comfort and the safety of the automobile are improved, meanwhile, since an electromagnetic brake system is increased, the use ratio of car energy is effectively improved, braking action time is shortened, and the brake performance and the traffic safety of the finished automobile are improved.

The invention discloses a permanent magnet generator rotor which comprises a barrel-shaped magnet yoke, a magnet yoke table, tegular permanent magnets, a wheel spoke and a rotating shaft, wherein thepermanent magnets and the magnet yoke are fastened on the barrel-shaped magnet yoke by non-magnetic stainless steel bolts, the permanent magnets are arranged at the outermost edge of the rotor, and the polarities of the permanent magnets are alternatively arranged along the circumference. The magnet yoke table reduces the magnetic-flux leakage between the adjacent magnets and improves the utilization ratio of the permanent magnets. The rotor has reasonable magnetic circuit design, simple structure, convenient installation and less permanent magnet consumption, and is especially suitable for large-size wind-driven generators with low rotating speeds.