37results about How to "Increase output thrust" patented technology

A motor which uses a permanent magnet is provided in which output thrust is improved by increasing a magnetic saturation limit and preventing reduction in magnetic flux and generation of heat is reduced by inhibiting generation of an eddy current in a magnetic pole. An N magnetic pole is formed such that its width increases as the distance from a stator increases on a side of an N pole magnetic yoke and an S magnetic pole is formed such that its width increases as the distance from the stator increases on a side of an S pole magnetic yoke. With this structure, a saturation limit of magnetic flux at an entrance of yoke which is a connection section between the N magnetic pole and the N pole magnetic yoke is increased and motor thrust is improved.

A cylindrical linear magnetic resistance motor of horizontal magnetic flow relates to the motor field, which overcomes uneven distribution of exciter field in the prior cylindrical mixed horizontal magnetic motor structure and eddy current loss caused by the parallel of the part of flux path and the motor axial direction. The invention includes a casing (6), an armature core (1), an armature winding (2), a rotor tooth (3), a spaced ring (4) and a shaft (5), wherein each phase of armature core (1) is fixed closely to an internal wall of the casing (6), the rotor tooth (3) and the spaced ring (4) are fixed and jacketed in sequence on the shaft (5) in an alternative arrangement way, 2n numbers of teeth are set on each armature core (1), n is a natural number, each phase of armature core (1) is staggered by an angle of 360degrees / 2mn in the peripheral direction, m is a phase number of the motor, the coil winding direction of the armature winding (2) on adjacent tooth of each phase of armature core (1) is reverse, and all coils on the same phase armature winding (2) are series-connected together. The invention can replace the prior cylindrical mixed horizontal resistance motor.

Disclosed is an electromagnetic suspension vibration isolation and energy feedback coordinating control method. The working mode of a cylindrical linear permanent magnet motor is selected according to the relationship between the sprung mass velocity and the double-stator asymmetric cylindrical linear permanent magnet fault-tolerant cursor motor rotor velocity, a skyhook-groundhook combined control strategy is designed, and the thrust or braking force needed by motor output is determined. The motor feeds energy back to a storage battery in an electricity generation mode, and absorbs electric energy from the storage battery in an electric mode. By the adoption of the strategy, vibration in the vehicle running process is effectively absorbed, the driving and taking comfort, the running comfort and the control stability of a vehicle are improved, the absorbed vibration energy is stored in the storage battery, the energy consumption of an electromagnetic suspension system is greatly reduced, and the method has good application prospects.

The invention provides a stator split moving iron core type permanent magnet linear oscillating motor, which belongs to the field of linear oscillating motors, wherein the outer stator iron cores are symmetrically distributed on both sides of the inner stator permanent magnets; the movable iron cores are symmetrically distributed at equal intervals Between the outer stator core and the inner stator permanent magnet; the resonant spring is sleeved on the movement shaft; the movement shaft is connected to the geometric center of the side end of the mover iron core support; the armature winding includes two sets of coils, which are connected by a sinusoidal AC source; the inner stator permanent magnet includes several sub-permanent magnets of equal size, and the magnetization directions are all vertical directions, and the magnetization directions of adjacent sub-permanent magnets on the horizontal side are different; when the magnetization directions of adjacent sub-permanent magnets on the vertical side are opposite When the inner stator core is added between the permanent magnets of the two poles, the two sets of coils are connected in reverse series or reverse parallel; otherwise, the two sets of coils are connected in series or parallel in the same direction; the present invention prolongs the service life of the permanent magnets, and at the same time The output thrust density is improved, and the noise and vibration of the motor operation are reduced.

The invention relates to the technical field of electronic equipment, in particular to an elevating rotating device and electronic equipment using the elevating rotating device. In the lifting rotating device of the present invention, the driving mechanism includes a driving shaft and a lifting cylinder sleeved on the driving shaft; the transmission mechanism includes a linear transmission assembly and a rotating shaft; the linear transmission assembly includes a limit cylinder sleeved outside the upper end of the lifting cylinder And the elastic member connected between the limiting cylinder and the lifting cylinder; one end of the rotating shaft is sleeved in the upper end of the lifting cylinder, and the other end of the rotating shaft protrudes from the top of the limiting cylinder to connect with the electronic mechanism, and the rotating shaft is connected to the The top of the limiting cylinder can be rotatably connected; through the above method, the drive shaft for linear lifting motion and the lifting cylinder and the rotating shaft for rotating motion are coaxially arranged, which reduces the volume of the entire device and is conducive to the miniaturization of the device. At the same time, the coaxial setting of the drive shaft, the lifting cylinder and the rotating shaft is conducive to optimizing the force on the device and increasing the output thrust of the device.

The invention provides a short primary DC (direct current) linear motor, relating to a DC linear motor, aiming at solving the problems that the traditional DC linear motor is long in magnetic circuit, low in air gap flux density and large in flux density fluctuation, and when a movable secondary level is needed, as the rotor is large in mass, the dynamical property of the motor is bad. An air gapis preserved between a primary level and a secondary level; the secondary level consists of a plurality of permanent-magnet units of the same structure, an upper magnetic yoke and a lower magnetic yoke; the polarities of two adjacent permanent-magnet units are opposite; the plurality of permanent-magnet units are arranged between the upper magnetic yoke and the lower magnetic yoke at intervals along the movement direction; the primary level is an armature winding of a single-phase coil; the primary level is mounted at the hollow cavity of the primary permanent-magnet unit; and the two effective sides of the primary coil are respectively located between two main permanent magnets in the two adjacent permanent-magnet units. The short primary DC linear motor is high in air gap flux density, less in flux density fluctuation and less in thrust fluctuation, and can be widely suitable for various DC linear motor systems.

The invention relates to a mechanical thrust device, particularly to a thrust augmentation device. The thrust augmentation device comprises a support, at least one group of transmission devices, a driving device and a conveying belt connected with the driving device. According to the thrust augmentation device, on the premise that the driving device drives the conveying belt to operate to produce the thrust, a rocking bar connected with the conveying belt swings according to the trajectory of the conveying belt and drives a third transmission bar fixedly connected with the rocking bar to swing. The third transmission bar drives the transmission devices, the transmission devices augment the output thrust according to a lever principle, the augmented thrust is output by sixth ejection bars of the transmission devices, and different augmented thrust can be produced by the aid of the ejection bars with different lengths as required, so that the thrust strength is guaranteed effectively while the consumed energy is reduced.

The invention discloses a composite flexural vibration sandwich type double-foot linear ultrasonic motor vibrator, and belongs to the technical field of piezoelectric ultrasonic motors. The vibrator solves the problem that the output thrust of a motor is affected by inconsistent vibration properties of two driving feet of the conventional flexural vibration modal beam type linear ultrasonic motor vibrator. Eight flexural vibration piezoelectric ceramic chips are sleeved on a stud of the vibrator, two end covers are respectively screwed at two ends of the stud to compact the eight flexural vibration piezoelectric ceramic chips, an electrode plate is respectively arranged between the adjacent flexural vibration piezoelectric ceramic chips and between the contact faces of the flexural vibration piezoelectric ceramic chip and the big end face of the end cover, insulating bushes are arranged between the contact faces of all the flexural vibration piezoelectric ceramic chips and the stud and between the contact faces of all the electrode plates and the stud, two thin-wall beams are symmetrically arranged at two sides of the big end face of each end cover, a mounting seat is fixed at the outer side of each thin-wall beam, a driving foot is arranged on the small end face of each end cover, and the driving feet are blocks, the sections of which are in the same shape as the small end faces. The vibrator is suitable for an ultrasonic motor.

The invention discloses a large thrust thread type linear ultrasonic motor and a working method thereof. The motor comprises a casing, a piezoelectric driving module first linear bearing, a second linear bearing and an output shaft. The two ends of the output shaft are light columns, and the middle is a stud; the piezoelectric driving module is arranged in the casing, and includes two bearing plates, two nuts, a flexible coupling, and four piezoelectric stacks. The through hole controls the movement sequence of the four piezoelectric stacks, so that the two nuts generate periodic movement in a fixed step sequence, which in turn makes the output shaft generate positive and negative linear motion, so as to realize the forward and reverse motion of the device. The invention has high reliability, large output thrust, high versatility, is easy to popularize, and has good economic benefits.

The invention provides an electromagnetic propulsion system and a maglev train for high-speed maglev traffic. The system includes a linear motor and an electric suspension assembly. The linear motor is used to realize the acceleration and guidance of the vehicle body. The linear motor includes first and second stators Coil groups, third and fourth stator coil groups, first and second superconducting mover coil groups, the first superconducting mover coil group is located between the first stator coil group and the second stator coil group and is fixedly arranged On one side of the car body, the second superconducting mover coil group is located between the third stator coil group and the fourth stator coil group and is fixed on the other side of the car body. The electric suspension assembly is used to realize the automatic movement of the car body. Suspension, the electric suspension component includes a permanent magnet array unit and a suspension induction plate, and the permanent magnet array unit interacts with the suspension induction plate to generate suspension force. The technical solution of the invention is applied to solve the technical problems of low thrust and poor stability of the electromagnetic propulsion system in the prior art.

The invention discloses a clamp-type inertial piezoelectric linear motor, which comprises a stator fixed frame and an output rod. The stator fixed frame is a hollow structure. An upper clamp block and a lower clamp block are arranged horizontally at the ends respectively, and a wedge is placed between the two lower clamp blocks; a ring-shaped laminated piezoelectric ceramic is arranged in the fixed frame of the stator, and the upper end of the ring-shaped laminated piezoelectric ceramic is against Lean against the inner surface of the upper end of the stator fixed frame, the lower end of the annular laminated piezoelectric ceramics is against the upper end of the wedge, the output rod passes through the stator fixed frame, annular laminated piezoelectric ceramics, and the wedge in turn, and the lower end of the output rod extends Wedge out. The stator in the inertial piezoelectric linear motor of the present invention adopts a clamp-type structure, and the left and right levers can be adjusted to meet different precision requirements; at the same time, the clamp-type structure can achieve high precision by increasing the clamp and output during work. The positive pressure and friction between the rods increase the output thrust.

The invention discloses a linear motor. The motor includes an iron core, a coil, a first magnetic conducting plate and a first permanent magnet; the iron core includes an iron core body and a core tooth arranged on at least one outer side of the iron core body and protruding from the iron core body; At least one of the outer sides of the iron core with the core teeth is provided with a first magnetic conductive plate, and a first permanent magnet is provided on the side of the first magnetic conductive plate facing the core teeth, and one of the first permanent magnets is provided with a first permanent magnet. One magnetic pole is adjacent to the core tooth, and the magnetic poles of the first permanent magnet adjacent to the core tooth are alternately arranged with N pole and S pole or S pole and N pole; The protruding directions of the teeth are parallel; the magnetic poles of the magnetic field generated by the energization in the coil interact with the magnetic poles of the corresponding first permanent magnets adjacent to the core teeth to generate thrust in the length direction of the iron core body to push the iron core or the first magnetic conducting plate to move. The winding process of the coil in this embodiment is very simple, and the utilization rate of the coil can be improved.

The invention belongs to the precise mechanical power source technical field and relates to a novel large-thrust servo electric cylinder. With the novel large-thrust servo electric cylinder adopted, technical problems in the prior art such as low thrust and poor practicability can be solved. The novel large-thrust servo electric cylinder of the invention comprise a cylinder body with a chamber; the cylinder body is provided with a plurality of inner screw rods which extend into the chamber and are distributed uniformly and circumferentially so as to form one circle through surrounding; outer screw rods which are distributed uniformly and circumferentially so as to form at least one circle through surrounding are arranged at the outer periphery of the inner screw rods which form one circle through surrounding; the inner screw rods and the outer screw rods respectively pass through a push plate in the chamber; the inner screw rods are in threaded connection with the push plate; the outer screw rods are also in threaded connection with the push plate; the push plate is provided with at least one push rod which can move relative to the cylinder body; and the cylinder body is provided with a driving mechanism which can drive the inner screw rods and the outer screw rods to rotate synchronously. Compared with the prior art, the novel large-thrust servo electric cylinder of the invention has the advantages of large thrust and high practicability.