250results about How to "Axial space saving" patented technology

A voice coil motor of miniaturized type is featured as applying simple design on radial size of motion-carry base and new material for front and rear spring plates, using separation design on left and right branch plates of said rear spring plate and optimum design on shape as well as distribution of permanent magnetic unit, applying convex-concave fastening design on front-back cover of shell and between front covers for realizing miniatured- size of voice coil motor.

The invention discloses a bearing-free asynchronous motor RBF neural network self-adaptive inverse decoupling control and parameter identification method. An SVPWM module, a voltage inverter, a bearing-free asynchronous motor and a load of the bearing-free asynchronous motor form a whole serving as a composite controlled object. Two radial basis function neural networks are adopted to achieve inverse control and parameter identification conducted on the composite controlled object. A self-adaptive inverse controller is formed by using an RBF neural network through learning, and is serially connected in front of the composite controlled object, errors of a feedback signal and a given signal are input into an inverse controller, and accordingly closed-loop control is formed, then a self-adaptive parameter identifier is formed by using one RBF neural network through learning and identifies output quantity speed and displacement of the composite controlled object, speed-less and displacement-free sensor control is achieved, online learning of an estimation signal is aided by means of a learning algorithm, and non-linear dynamic decoupling control of the bearing-free asynchronous motor is achieved. The bearing-free asynchronous motor RBF neural network self-adaptive inverse decoupling control and parameter identification method is high in control speed and higher in identification accuracy, and a control system is excellent.

The invention relates to a dual-redundancy electro hydraulic servo actuator which comprises a double-outlet rod hydraulic cylinder and a single-outlet rod hydraulic cylinder which are connected in series, wherein one end of the double-outlet rod hydraulic cylinder extends outward, and is connected with load; the rodless cavity side of the single-outlet rod hydraulic cylinder is connected with a displacement sensor; and one end of the double-outlet rod hydraulic cylinder and the rodless cavity side of the single-outlet rod hydraulic cylinder are respectively controlled by a hydraulic control system. According to the invention, the double-outlet rod hydraulic cylinder and the single-outlet rod hydraulic cylinder are adopted to form the dual-redundancy electro hydraulic servo actuator, so that the defect of large occupied space for a dual-redundancy electro hydraulic servo actuator which is composed of two double-outlet rod hydraulic cylinders in series is overcome, thus the structure is more compact, because the control on a single-outlet rod return circuit has a cold and hot oil exchange process, the system working temperature is reduced, and the system works more stably.

The invention discloses an inner-channel vehicle suspension system magnetorheological damper, which comprises a cylinder barrel; a combined electromagnetic piston and a floating piston are arranged in the cylinder barrel in sequence from top to bottom; the combined electromagnetic piston divides the cavity chamber above the floating piston into an upper cavity chamber and a lower cavity chamber, which are filled with magnetorheological fluid; a bottom cover is arranged at the bottom end of the cylinder barrel; the bottom cover is respectively fixedly connected with an inflating and deflating valve and a lower lifting ring; a guide seat is arranged at the upper end of the cylinder barrel; the upper end of the guide seat tightly covers an upper end cover pressing the guide seat; the lower end of the guide seat is fixedly connected with a buffering block; the combined electromagnetic piston is fixedly connected with a piston rod penetrating through the guide seat and the upper end cover to extend outwards; the outer end of the piston rod is fixedly connected with an upper lifting ring of which the inside is provided with a wire outgoing groove. The inner-channel vehicle suspension system magnetorheological damper is simple in structure and low in manufacturing cost, can accurately adjust vehicle vibration generated by random excitation of a road face, and is high in work efficiency and work stability; the floating piston is enabled not to be clamped in the moving process up and down, and is stable when being used for pressure compensating; the liquid cannot easily leak in the work process.

The present invention discloses a novel permanent magnet speed regulator using a rotary salient pole to adjust magnetic flux. The novel permanent magnet speed regulator comprises a driving shaft and a driven shaft, the driving shaft is fixedly equipped with a cylindrical conductor rotor, and a permanent magnet rotor of which one end is fixed to the driven shaft is arranged in a chamber formed by the cylindrical conductor rotor. Moreover, a radial gap exists between the permanent magnet rotor and the cylindrical conductor rotor, a ratchet wheel sleeve rotating together with the driven shaft and a salient pole magnetic conductive magnet yoke capable of rotating relatively on the ratchet wheel sleeve are arranged at the lower part of the other end of the permanent magnet rotor, and a plurality of tangential permanent magnet magnetic steels are arranged in the permanent magnet rotor at equal intervals. According to the present invention, the problem that a conventional cylindrical permanent magnet speed regulator adjusts the relative positions of the permanent magnet rotor and the cylindrical conductor rotor in an axial direction to reduce the large the occupied space of an effective part of the coupling area of the permanent magnet rotor and the conductor rotor is avoided, an additional axial space is not needed, and an adjusting mechanism, such as an additional complicated cylinder is also not needed, so that the whole speed regulator is more compact and reasonable in structure, and a transmission torque under the same size is improved substantially.

The invention discloses a driving system of a hybrid vehicle, and belongs to the technical field of vehicle driving. The system involves an engine, a connecting and disconnecting device, a first motor, a first gear assembly, a second motor, and differential devices; one end of the connecting and disconnecting device is connected with the engine through a first transmission shaft; the first motor is connected with the other end of the connecting and disconnecting device through a second transmission shaft; the first gear assembly comprises a plurality of gear pairs; the first motor is connectedto one end of the second transmission shaft, and a third transmission shaft is rotatably connected with the second transmission shaft; the second motor is connected with a fourth transmission shaft arranged on the periphery of the third transmission shaft in a sleeving mode; the differential devices comprise a front differential device and a rear differential device, and the rear differential device is connected with the other end of the third transmission shaft and a rear driving shaft; and the engine, the connecting and disconnecting device, the first motor and the second motor are sequentially arranged at intervals in the direction of vehicle front wheels pointing to vehicle rear wheels. According to the system, the engine can participate in driving when the vehicle speed is high and does not participate in driving when the vehicle speed is low so that a vehicle can be in the most economical working mode, and the oil consumption of the vehicle is reduced.

The invention relates to a grid type control drum device of a small fast neutron reactor. The grid type control drum device comprises an inner reflecting layer, a grid type control drum and an outer reflecting layer which sequentially sleeve the periphery of a reactor core from inside to outside, and a driving motor for driving the grid type control drum; the inner reflecting layer is in a cylindrical grid shape and is fixed in position; the outer reflecting layer is in a complete cylinder shape and is fixed in position; and the grid type control drum is in a cylindrical grid shape and can bedriven by the driving motor to rotate by a certain angle so as to adjust the overlapping area between the absorption grids and the reflection grid of the inner reflecting layer and change the number of leaked neutrons reflected back to the reactor core, so reactivity control is achieved. The device disclosed by the invention is small in occupied axial space, and meets the miniaturization design requirement; the absorption grids have no axial displacement, so that uneven axial power distribution of the reactor core cannot be caused; and the absorption grids are in central symmetry about the central axis of the reactor core, have good adaptability to material expansion caused by radial temperature gradient, and are not easy to block due to deformation.

The invention discloses a collaborative robot modularized joint compact in structure. The modularized joint is composed of a joint shell, a joint output flange, a low-speed wire protection pipe, a harmonic reducer, a motor assembly, a motor shaft, a brake assembly, a motor end encoder assembly and a joint end encoder assembly which are sequentially connected. The low-speed wire protection pipe isconnected with the joint output flange. The harmonic reducer is connected with the joint output flange and the joint shell. The motor assembly comprises a stator and a rotor. The motor shaft is connected with the motor rotor. One end of the motor shaft is connected with the input end of the harmonic reducer. The brake assembly is of a magnetic attraction friction type, capable of achieving lockingwhen powered off, capable of achieving unlocking when powered on and connected to the motor shaft. Compared with a plug pin type brake, sudden stop is safe, and stop pins cannot be bent. A motor endencoder coded disc and a joint end encoder coded disc are concentrically arranged. A motor end encoder reading head and a joint end encoder reading head are integrated together, the axial space of thejoint can be compact, the integration level can be high, the wiring space is large, and operation is facilitated; and meanwhile the modularized joint further has the characteristics of being high inrigidity and large in load-dead weight ratio.

The invention provides a washing machine deceleration clutch and a washing machine. The washing machine deceleration clutch comprises an input shaft, a deceleration device, a clutch device, an output shaft and an output shaft sleeve, wherein the clutch device is formed by a clutch platen and a clutch shaft sleeve; the clutch shaft sleeve covers the circumferential periphery of the deceleration device; the clutch platen rotationally move surrounding the axis to drive the clutch shaft sleeve to axially move; a first position of the clutch shaft sleeve movement is connected with a fixing device; the fixing device and an external cylinder of the washing machine are relatively fixed, so a washing work condition can be achieved; a second position of the clutch shaft sleeve movement is connected with a rotor of a direct-drive motor, so a dehydrating work condition can be achieved. The clutch device is arranged on the circumferential periphery of the deceleration device, so overall height of the deceleration clutch can be reduced, washing machine size can be reduced with the same of the washing capacity or washing capacity can be increased with the same of the washing machine size.

A vehicle transaxle includes an input, a splitter gearset including a member connected to the input, a second member connected to a motor-generator and a first output, a traction gearset including a third member connected to a traction motor, a fourth non-rotating member and a second output, a chain drive connected to the first and second outputs, and a differential driven by the chain drive for transmitting power to vehicle wheels.

The invention discloses a tractor load reversing clutch device. The device mainly comprises a clutch shaft, a left input gear, a clutch hub, a clutch pressure plate, a clutch friction plate, a release spring, an antifriction block, a clutch piston, a clutch shell and a right input gear. The left input gear, the clutch hub and the clutch piston are sequentially arranged on the left half part of the clutch shaft to form a clutch F, wherein the left input gear and the clutch piston are sleeved by a clutch shaft sleeve; and the clutch hub is fixedly connected with the clutch shaft. The clutch piston, the clutch hub and the right input gear are sequentially arranged on the right half part of the clutch shaft to form a right clutch R, wherein the right input gear and the clutch piston are sleeved by the clutch shaft sleeve; and the clutch hub is fixedly connected with the clutch shaft. The device is a left clutch and a right clutch. Because pressure oil paths are differently controlled, the service life of the clutch is prolonged. Under the action of the release spring, two oblique planes of the clutch shaft and the piston are closely attached, so that the device is automatically sealed and the dragging moment of the clutch is reduced.

The invention discloses an automobile gas-electric hybrid power gearbox. The automobile gas-electric hybrid power gearbox comprises an engine, a hybrid power module and a gearbox body. The hybrid power module is composed of a motor and a single-planet-wheel planet row. A rotor of the motor is connected with a sun wheel of the planet row. An output shaft of the engine is connected with a gear ringof the planet row. An input shaft of the gearbox body is connected with a planet carrier of the planet row. A brake is arranged between the gear ring of the planet row and a shell of the hybrid powermodule. A first clutch is arranged between the sun wheel and the planet carrier and used for generating a pair of torque which is equal in magnitude and opposite in direction and acts on the sun wheeland the planet carrier correspondingly. The angular acceleration of an engine shaft and the angular acceleration of both the input shaft of the gearbox body and the planet carrier are selected reasonably, thus the engine can be accelerated to a preset rotational speed within the expected time and is ignited to be started, and smooth travelling of a vehicle is maintained. According to the automobile gas-electric hybrid power gearbox, the function of pure electric drive and the function of staring the engine in traveling are achieved, and the engine is started quickly and smoothly in a pure electric drive mode.

The present invention discloses a wind turbine gearbox and a sun gear and planet carrier spline pair connection structure thereof. The connection structure comprises a first stage sun gear, a second stage planet carrier, protruding plates and a rubber gasket; the second stage planet carrier has an internal spline segment; the first stage sun gear has an external spline segment; the external spline segment and the internal spline segment are engaged to form a spline pair; a plurality of bosses are arranged with certain intervals and are all positioned at an upwind direction end of the external spline segment; the bosses are also attached to an upwind direction end surface of the second stage planet carrier; the rubber gasket is disposed between the two half rings and a complete circular ring is formed; a first oil inlet circular groove is formed between the circular ring and a shaft body of the first stage sun gear; a second oil inlet circular groove is formed between the circular ring and the shaft body, the upwind direction end surface of the external spline segment, and the upwind direction end surface of the second stage planet carrier; the bosses of the first stage sun gear are positioned in the second oil inlet circular groove; and the wind turbine gearbox comprises a box body, a first stage planetary gear train and a second stage planetary gear train. Lubricating and cooling effects are good, axial space is effectively shortened, and strength is guaranteed.

The invention belongs to the technical field of power transmission, and particularly relates to a serial-parallel hybrid power transmission device. The passenger-car serial-parallel hybrid power transmission device comprises an electric generator and a motor which are not arranged coaxially. An engine input shaft is connected with an input shaft through a main clutch and a shock absorber, the input shaft is fixedly connected with a first gear, and on one hand, a second gear arranged on an intermediate shaft in an empty sleeving mode is engaged with the first gear and a seventh gear, and on the other hand, the second gear is fixedly connected with a clutch; the seventh gear is fixedly connected with an electric generator output shaft, a third gear and a fifth gear are fixedly connected with the intermediate shaft, and the third gear is engaged with a second gear; and the second gear is fixedly connected with a motor output shaft, the fifth gear is engaged with a sixth gear, and the sixth gear is fixedly connected with a differential mechanism on the output shaft. According to the serial-parallel hybrid power transmission device, the electric generator and the motor are not arranged coaxially so that the axial space of the transmission device can be shortened, and the serial-parallel hybrid power transmission device is suitable for passenger cars where A-grade to C-grade transverse engines are arranged.

The invention discloses a quasi-zero stiffness-based vibration isolator, and belongs to the field of ultra-precise vibration attenuation. The vibration isolator is characterized in that an magnetorheological elastomer relatively low in stiffness is connected in parallel on the basis of taking a slotting belleville spring having a negative stiffness displacement region as a main elastic component;stiffness of the magnetorheological elastomer is regulated by a stiffness regulating device, so that a whole vibration isolation system connected in parallel by the slotting belleville spring and themagnetorheological elastomer under a load meets the need of quasi-zero stiffness under a certain working displacement region, and a possibility is provided for realizing low inherent frequency, high load-carrying capacity and small deformation required by the precise vibration isolation system.

The invention discloses a brake cylinder comprising a cylinder body and a rear cover, wherein the cylinder body is internally provided with a cylinder core; the cylinder core comprises a piston and a piston rod and is of an integral structure; the cylinder body is in an integral structure which contains a front cover and is molded through casting; and the piston rod of the cylinder core is in a hollow structure in which a spring is arranged. The brake cylinder is a single-action introduced-in ultrathin cylinder, has the advantages of simple structure, beautiful appearance, safety, reliability and long service life.