48results about How to "High power density ratio" patented technology

The invention relates to the motor technology field, more particularly to an integrated driving motor without a position sensor. The driving motor is provided with a motor; and the motor is composed of a stator, an external rotor, a rotor spindle, and an end cover. The driving motor is characterized in that: a driver is arranged in the motor and is fixedly connected with the end cover; the end cover and the stator of the motor are mutually connected to form an integral body so as to strengthen heat radiation capability of a module; the driver is composed of a power plate and a control plate; the power plate is provided with a major loop, an inlet wire open-phase detection circuit, a bus current detection circuit, an under-voltage and over-voltage detection circuit, a counter-electromotive force detection circuit and a switch power supply circuit; and the control plate is provided with a DSP control system circuit and a communication module circuit. According to the invention, on the basis of the above-mentioned structure, the driving motor has advantages of compact structure, high-density power, high efficiency, low noise, high integrated level, and low cost and the like.

The invention provides a charging and discharging type DC-DC conversion circuit. When an energy storing device is charged, alternate switching-on control is performed on a first switching tube and a second switching tube, the energy storing device is charged by a synchronous ratification BUCK circuit which is composed of a first semi-conductor switching tube, the first switching tube, the second switching tube, a coupled inductor L and a capacitor C2, and meanwhile, a load is powered by a first winding, a second semi-conductor switch and a capacitor C3 of the magnetically integrated coupled inductor L; when the energy storing device is discharged, the anode of the energy storing device outputs DC to supply power to the load through a high-step-up-ratio BOOST circuit which is composed of the coupled inductor L, the second switching tube, the second semi-conductor switch and the capacitor C3, active clamping is performed on the voltage peak produced by the input end of the second switching tube through the first switching tube and the capacitor C1, and electric energy in the capacitor C1 is fed back to the energy storing device for charging when the voltage of the capacitor C1 reaches a preset voltage value, so that the conversion efficiency, the utilization rate and the power density ration of DC are improved, and costs are reduced.

The invention relates to the technical field of engines, and particularly relates to a high-integration fuel cell engine system which solves a problem of poor integration of the engine system becausefuel cells are restricted by various finished products with a fixed shape in the prior art. The high-integration fuel cell engine system comprises an engine integrated frame shell and an air system, ahydrogen system, a hydrothermal circulation system, an electrical system, an electric pile and a fluid distribution manifold which are installed in the engine integrated frame shell, wherein the airsystem includes an air intake filter assembly, an air compressor assembly, an intercooler assembly, an air humidification assembly, an intake and exhaust control valve assembly and an air tail exhaustassembly. The fuel cell engine system has the advantages of high integrated design reliability, good stability, compact system structure, high power density ratio and high space utilization ratio ofcomponents, is convenient for matching the engine system with different vehicle models, can satisfy the space layout of various types of vehicles, facilitates the space allocation of finished vehiclesand brings benefits to the replacement and maintenance of components.

The invention discloses a negative-pressure contraction elastomer driven flexible knee-joint exoskeleton. The negative-pressure contraction elastomer driven flexible knee-joint exoskeleton comprises an exoskeleton controller, a left leg knee-joint flexible actuator, a right leg knee-joint flexible actuator and the like. The flexible knee-joint exoskeleton mainly takes one micro vacuum pump as a pneumatic power source, a DSP embedded control system processes data such as muscle strength, knee joint angle and man-machine interaction force which are detected by a sensing system in real time and estimates the man-machine synergy state, switch of negative pressure flow and an air channel of the micro vacuum pump is controlled in real time, and on the basis of the man-machine synergy state, pressure control is conducted on corresponding negative-pressure contraction elastomer drives on the left leg knee-joint flexible actuator and the right leg knee-joint flexible actuator; in the walking process, torque assisting knee-joint bending and stretching is provided for the left leg and the right leg in real time, and the purpose of providing flexible walking assist for old people who suffer from knee-joint sports injury and have weak walking ability is achieved.

The invention discloses a wearable flexible lower limb exoskeleton based on negative pressure rotation pneumatic artificial muscle. The wearable flexible lower limb exoskeleton comprises a portable control and power system and a wearable flexible assistance system; the wearable flexible lower limb exoskeleton mainly adopts the negative pressure rotation pneumatic artificial muscle as a core driving component, rotational motion is generated under the negative pressure effect, rotating bending torque is supplied, after negative pressure disappears, stretching restoring force is generated, and stretching torque is supplied. The portable control and power system processes user gait data in real time and controls gas circuit switching and gas pressure between the negative pressure rotation pneumatic artificial muscle in the wearable flexible assistance system and a negative pressure power source in real time, wherein the user gait data is collected and fed back by an inertia measuring unit,real-time pressure control is performed on a corresponding negative pressure rotating pneumatic artificial muscle driver on the wearable flexible assistance system, in the walking process, torque helping shanks to swing relative to thighs is supplied to left and right legs in real time, and the purposes of walking assistance and lower limb rehabilitation training are achieved.

The invention discloses a flexible exoskeleton robot for assisting motion of hip joints and knee joints. The robot comprises a pneumatic control system, a left leg hip joint flexible assistance assembly, a right leg hip joint flexible assistance assembly, a left leg knee joint flexible assistance assembly, a right leg knee joint flexible assistance assembly and the like. Negative-pressure contraction elastomer drivers are adopted as driving elements of the left leg hip joint flexible assistance assembly and the right leg hip joint flexible assistance assembly and form linear displacement and elastic application force under a negative pressure effect; negative-pressure rotation elastomers are adopted as driving elements of the left leg knee joint flexible assistance assembly and the right leg knee joint flexible assistance assembly and generate rotation torque under the negative pressure effect. The pneumatic control system processes user gait data collected and fed back by a detectionand information sending module in real time, controls the negative-pressure loading and unloading process of the negative-pressure contraction elastomer drivers and the negative-pressure rotation elastomers in real time and provides assistance for the hip joints and the knee joints according to a gait rule in the walking process.

The invention provides a bender hydraulic system which has simple structure, reliable control and back pressure being capable of being adjusted at will, aiming at solving the problems that an unloading circuit of the traditional bender hydraulic control system is more complex, back pressure control stability is low, a valve group is troublesome to mount, a product is heavy and power density ratio is low. The bender hydraulic system provided by the invention comprises an oil pump, an oil tank, a three-position three-way reversing valve, wherein a charging valve is connected between the oil tank and the upper cavity of a cylinder; the oil outlet of the oil pump is connected with the oil tank by virtue of a two-way cartridge valve; the port P of the three-position four-way reversing valve 30 is connected with the oil outlet of the oil pump, the port B of the three-position four-way reversing valve 30 is connected with the lower cavity of the cylinder by virtue of a first electromagnetic directional valve 40; the port B is also connected with the control port of the charging valve; the port A of the three-position four-way reversing valve 30 is connected with the upper cavity of the cylinder by virtue of a throttling check valve 20; and the port B is also connected with the lower cavity of the cylinder by virtue of a second electromagnetic directional valve 50 and a throttling valve 60.

A cartridge type two-dimensional servo valve with a temperature compensation type damping piston comprises a valve body module, an electric-mechanical converter module and a position sensor module. The valve body module comprises a two-dimensional valve composed of a valve element and a valve sleeve, and the valve element is rotatably placed in a hole in the valve sleeve in an axially sliding mode. The valve element 30 is provided with five shoulders, the right end of the valve sleeve is connected with the electric-mechanical converter module through a connecting plate, the valve element is fixedly connected with an armature, and the right end of the valve element is connected with the electric-mechanical converter module through the armature. The damping piston is arranged on the right surface of the fourth shoulder, and a damping cavity f is organically formed by the left side of the damping piston, the valve sleeve and the valve element in an enclosed mode. The right side of the damping piston is exposed to a high pressure hole b. A gap is formed between the damping piston and the valve sleeve. A torque motor is adopted for the electric-mechanical converter module, one end of aspring is connected with a spring rod, and the other end of the spring is connected with a spring seat fixed to an outer shell. The displacement sensor module comprises an LVDT connecting rod and an LVDT sensor.

The invention relates to a hydrostatic drive high-speed transplanter chassis. An engine provides a power source for a two-way plunger variable pump and an auxiliary gear pump. The two-way plunger variable pump is connected with a two-stage variable traveling transplant motor through a closed circuit and provides power for a parking brake control valve. An output shaft of the two-stage variable traveling transplant motor is connected with a mechanical transfer case, and the mechanical transfer case transmits power to an inter-axle differential and transplant mechanism speed change and power separation boxes. The transplant mechanism speed change and power separation boxes are connected with a transplant drive mechanism, the power separation box determines whether a transplant mechanism works or not, and the transplant mechanism speed change box adjusts the transplant plant spacing according to different transmission ratios. The output end of the auxiliary gear pump is connected with a flow distribution valve. The flow distribution valve distributes oil liquid to a high-speed electromagnetic reversing valve and a profiling mechanism control valve, the high-speed electromagnetic reversing valve and a steering gear control a steering oil cylinder, the profiling mechanism control valve controls a profiling mechanism oil cylinder, and a transplant mechanism lifting oil cylinder is controlled by a transplant mechanism lifting control valve.

The invention relates to a flexible rotor of an ultrahigh-rotating-speed liquid hydrogen turbine pump. The flexible rotor comprises a screw (1), an inducer (2), a compression nut (3), a shaft (4), a primary centrifugal wheel (5), a metal rubber damper (6), a squirrel-cage elastic support (7), a bearing pair (8), an interstage shaft sleeve (9), a secondary centrifugal wheel (10), a balance piston (11), a metal rubber damper baffle (12), a first shaft sleeve (13), a turbine disc (14), a large nut (15), a preloaded disc spring (16) and a second shaft sleeve (17). The shaft system of the flexiblerotor extends outwards in two directions, connection and torque transmission structures are optimized, the mass of the rotor is reduced, cantilevers on the two sides and the supporting span are shortened, supercritical work is achieved, the rated rotating speed reaches 80000 rpm, the critical rotating speed margin is 20% or above, and meanwhile the flexible rotor has 60%-100% variable working condition and axial force self-adaptive balance capacity.

The invention relates to a vertical-mill gearbox with a pure-sliding bearing configuration structure. The vertical-mill gearbox comprises a box body, an input-stage bevel gear pair, a second-stage parallel-axis cylindrical gear pair, an output-stage planetary gear and an output flange; the output flange is supported through a set of tilting-pad thrust sliding bearings; other motion parts are supported by sliding bearings. The vertical-mill gearbox has the advantages that all stages of driving gear parts and driving parts of the gearbox adopt the sliding bearing configuration support structure, and sliding bearing support is high in bearing capacity, long in service life, high in cost performance, short in delivery time, good in maintenance performance and the like; lubricating oil films of the sliding bearings feature in providing damping for rotating parts and restricting vibration, running steadiness and bearing capacity of the gearbox can be improved, all the sliding bearings adopt forced lubrication, and an entire machine is higher in reliability; the entire structure can be more compact by the aid of the sliding bearing configuration support structure, the entire machine is downsized and reduced in weight, and power density ratio of the gearbox is increased.

The invention discloses a torque motor directly controlled cartridge two-dimensional electro-hydraulic proportional reversal valve. The torque motor directly controlled cartridge two-dimensional electro-hydraulic proportional reversal valve comprises a valve sleeve, a valve core, a corrugated pipe coupler, a rectangular alignment magnetic stripe, a partition plate and a torque motor; a two-dimensional valve and a cartridge valve are combined together, through the characteristic that the two-dimensional valve enables the pilot stage and the power stage to be integrated with two movement freedomdegrees of a single two-dimensional valve core, the design including a two-section valve core and a two-section valve sleeve is adopted, and the cartridge two-dimensional valve is higher in application integration level, power density ratio and pollution resistance compared with a traditional cartridge valve; and the torque is transmitted through the corrugated pipe coupler, alignment resetting is conducted through the alignment magnetic stripe, the complexity of a transmission mechanism of the traditional two-dimensional valve is made up, and the structure is more simple.

The invention discloses a compact high-pressure plunger variable double pump, which comprises a shell, a rear cover, a cylinder body, a plunger piston shoe assembly, a swash plate and a thrust plate which are fixedly matched with one another, wherein a positioning pin is arranged at one end of the outer ring edge of the thrust plate, and the other end of the positioning pin is inserted into and matched with the rear cover; an oil suction ring groove is formed on one side of the inner surface of the thrust plate, and is oppositely matched with an oil suction on the valving surface of the cylinder body; and two oil outlet ring grooves with equal oil outlet apertures are formed on the other side of the inner surface of the thrust plate, and the two oil outlet ring grooves are oppositely matched with an oil outlet on the valving surface of the cylinder body. When an oil pump is used in engineering machinery, the compact structure and highly-integrated function of the oil pump is increasingly perfected. Through the structure of the invention, the function of the double pump is realized by a single cylinder body, and the integral structure is suitable for the application to the engineering machinery, realizes the output function of oil sources with the same flow rate, can meet the requirement of the synchronism of an external actuating mechanism effectively, and improves the using efficiency; and the compact structure of one pump for dual oil output is favorable for improving the actual using effect and prolonging the actual service life, and has higher reliability.

The invention provides an integrated electro-hydraulic servo rotary actuator which is characterized in that a hydraulic execution element, a hydraulic control element, a hydraulic power element, a sensor, a motor and a control system are modularly and integrally arranged, so that the power density ratio and the power volume ratio can be greatly improved, the system can be simplified, and system installation control, online real-time monitoring and intelligent protection are facilitated. The integrated electro-hydraulic servo rotary actuator comprises a spiral oscillating cylinder, an integrated motor pump, an integrated valve block, an energy accumulator, a controller and an RVDT angle sensor, the spiral oscillating cylinder comprises a cylinder body, an output shaft and a piston, the piston and the output shaft are arranged in an inner cavity of the cylinder body, the piston is connected with corresponding first meshing inner teeth of the inner cavity of the cylinder body in a meshing manner through outer spiral teeth, the outer cylindrical surface of the piston is in clearance fit with the annular surface of the inner wall of the inner cavity of the cylinder body, and the connecting end of the output shaft is meshed with inner spiral left teeth of a positioning cavity of the piston through outer spiral left teeth.

The invention discloses a fan-out-shaped packaging structure of a large power MOSFET. The structure comprises a ceramic double-sided copper-clad substrate, a gold-plated layer, a single MOSFET chip formed after carrying out scribing on a large power MOSFET wafer and solder balls which are successively arranged from bottom to top. The ceramic double-sided copper-clad substrate is provided with a lower embedded groove used for internally placing the single MOSFET chip. The single MOSFET chip is provided with a grid electrode, a source electrode and a drain electrode. The solder balls comprise first solder balls, a second solder ball, a third solder ball and a fourth solder ball. The first solder balls are located on two sides outside the lower embedded groove and are contacted with the gold-plated layer so as to lead out the drain electrode of a finished product. The second solder ball is located on the grid electrode and is used for leading out the grid electrode of the finished product. The third solder ball and the fourth solder ball are located on the source electrode and are used for leading out the source electrode of the finished product. The invention also discloses a manufacturing technology of the fan-out-shaped packaging structure of the large power MOSFET. In the invention, a lower internal resistance, a smaller stray parameter, better cooling performance and a largerpower density ratio of the MOSFET can be realized, simultaneously the structure and the technology are suitable for large scale mass production, and production cost is reduced.

The invention discloses a flexible hip joint assistance exoskeleton. The flexible hip joint assistance exoskeleton comprises a negative pressure control system, a hip joint flexible assistance assembly and an inertia measuring unit assembly. The hip joint flexible assistance assembly adopts a negative pressure retraction elastomer driver as a hip joint assistance actuator; the negative pressure retraction elastomer driver can receive negative pressure input and unloading of the negative pressure control system; when negative pressure is input, linear displacement becomes shorter, and tension is obtained; when negative pressure is unloaded, in the process when the self-reaction state is recovered to the self-natural state, reverse linear displacement and restoring force are obtained. The negative pressure control system processes user gait data in real time, wherein the data is collected and fed back by the inertia measuring unit assembly, the negative pressure input and unloading process of the negative pressure retraction elastomer driver in the hip joint flexible assistance assembly is controlled in real time, assistance is provided for the hip joint of a user according to the gait rule in the walking process, and the walking assistance purpose is achieved.

The invention provides a power module capacitor layout method. The power module capacitor layout method comprises the following steps: S1, selecting a capacitor core group, a driver and an MOSFET device, wherein the MOSFET device is an SIC MOSFET device; S2, setting the MOSFET device, the driver and the capacitor core group from bottom to top in sequence, wherein a gap is formed between the capacitor core group and the driver, the capacitor core group is electrically connected with the MOSFET device and is arranged above the MOSFET device, and the driver is installed and fixed through auxiliary terminals welded to the MOSFET device; and S3, filling the SIC MOSFET device, the driver and the capacitor core group. Through the technical scheme, an epoxy resin integral filling mode is adopted,due to the fact that the structure that capacitor cores and the power device are connected in layout is optimized, the stray inductance is reduced, and the application condition of the SIC MOSFET power device with higher switching speed is met.

A cartridge type two-dimensional servo valve with a temperature compensation type damping piston comprises a valve body module, an electric-mechanical converter module and a position sensor module. The valve body module comprises a two-dimensional valve composed of a valve element and a valve sleeve, and the valve element is rotatably placed in a hole in the valve sleeve in an axially sliding mode. The valve element 30 is provided with five shoulders, the right end of the valve sleeve is connected with the electric-mechanical converter module through a connecting plate, the valve element is fixedly connected with an armature, and the right end of the valve element is connected with the electric-mechanical converter module through the armature. The damping piston is arranged on the right surface of the fourth shoulder, and a damping cavity f is organically formed by the left side of the damping piston, the valve sleeve and the valve element in an enclosed mode. The right side of the damping piston is exposed to a high pressure hole b. A gap is formed between the damping piston and the valve sleeve. A torque motor is adopted for the electric-mechanical converter module, one end of aspring is connected with a spring rod, and the other end of the spring is connected with a spring seat fixed to an outer shell. The displacement sensor module comprises an LVDT connecting rod and an LVDT sensor.

The invention belongs to the technical field of hydraulic pumps, and particularly relates to an inclined shaft plunger type hydraulic motor pump which comprises an inclined shaft pump assembly, the inclined shaft pump assembly comprises an inclined shell and a straight shell which are connected, a cylinder body is rotationally assembled in the inclined shell, a driven bevel gear is arranged on the cylinder body, a plunger is assembled in the cylinder body in a sliding mode, and the plunger is connected with a plunger connecting rod; and the inclined shaft plunger type hydraulic motor pump further comprises a motor, the motor comprises a motor shaft and motor end covers located outside the two ends of the motor shaft, and the straight shell is connected with one motor end cover. The inclined shaft pump assembly further comprises a transmission shaft, one end of the transmission shaft is inserted and fixed from the end face of one end of the motor shaft, the other end of the transmission shaft is provided with spherical hinge seats corresponding to the plunger connecting rods, the corresponding ends of the plunger connecting rods are assembled in the corresponding spherical hinge seats, and the transmission shaft is further provided with a driving bevel gear meshed with the driven bevel gear. And a sealing structure is arranged between the transmission shaft and the straight shell and / or the motor end cover to prevent liquid from entering the motor.

The invention discloses a torque motor directly controlled cartridge two-dimensional electro-hydraulic proportional reversal valve. The torque motor directly controlled cartridge two-dimensional electro-hydraulic proportional reversal valve comprises a valve sleeve, a valve core, a corrugated pipe coupler, a rectangular alignment magnetic stripe, a partition plate and a torque motor; a two-dimensional valve and a cartridge valve are combined together, through the characteristic that the two-dimensional valve enables the pilot stage and the power stage to be integrated with two movement freedomdegrees of a single two-dimensional valve core, the design including a two-section valve core and a two-section valve sleeve is adopted, and the cartridge two-dimensional valve is higher in application integration level, power density ratio and pollution resistance compared with a traditional cartridge valve; and the torque is transmitted through the corrugated pipe coupler, alignment resetting is conducted through the alignment magnetic stripe, the complexity of a transmission mechanism of the traditional two-dimensional valve is made up, and the structure is more simple.

The invention discloses a flexible upper-limb assistance exoskeleton. The flexible upper-limb assistance exoskeleton comprises an exoskeleton flexible execution part and a control system. The flexibleupper-limb assistance exoskeleton mainly uses the negative pressure rotating pneumatic artificial muscle as a flexible driving element and a miniature vacuum air pump as a negative pressure source. The control system measures the muscle force, elbow joint angle and human-machine interaction force according to a force sensor, a surface myoelectricity sensor and an inertia measurement unit, processes the feedback of upper-limb force, position and motion information in real time, estimates a man-machine cooperation state, and controls the negative pressure flow rate and the air passage switchingof the miniature vacuum pump in real time. The control system further controls the pressure of the corresponding negative pressure rotating pneumatic artificial muscle on the exoskeleton flexible execution part worn by a left arm and a right arm based on the man-machine cooperation state, and provides real-time torque for the left and right arms to assist elbow joint bending and stretching duringthe upper-limb movement so as to achieve the purpose of helping elbow joint and rehabilitation training of elbow joint movement injury.

The invention discloses a flexible exoskeleton robot for assisting motion of hip joints and knee joints. The robot comprises a pneumatic control system, a left leg hip joint flexible assistance assembly, a right leg hip joint flexible assistance assembly, a left leg knee joint flexible assistance assembly, a right leg knee joint flexible assistance assembly and the like. Negative-pressure contraction elastomer drivers are adopted as driving elements of the left leg hip joint flexible assistance assembly and the right leg hip joint flexible assistance assembly and form linear displacement and elastic application force under a negative pressure effect; negative-pressure rotation elastomers are adopted as driving elements of the left leg knee joint flexible assistance assembly and the right leg knee joint flexible assistance assembly and generate rotation torque under the negative pressure effect. The pneumatic control system processes user gait data collected and fed back by a detectionand information sending module in real time, controls the negative-pressure loading and unloading process of the negative-pressure contraction elastomer drivers and the negative-pressure rotation elastomers in real time and provides assistance for the hip joints and the knee joints according to a gait rule in the walking process.

The invention relates to a vehicle full-hydraulic steering drive axle, which includes an axle housing, and steering knuckles are hinged at both ends of the axle housing. The steering knuckle is connected with a hydraulic motor, and a service brake and a parking brake are installed on the hydraulic motor. , which is characterized in that the two ends of the axle housing are hinged with the steering knuckle through the upper and lower hinge seats, wherein the upper hinge seat is hinged with the steering knuckle by installing a high-pressure rotary joint, and a double Piston rod hydraulic cylinder, the cylinder body of the double piston rod hydraulic cylinder is fixedly connected with the axle housing, the two piston rod ends of the double piston rod hydraulic cylinder are hinged with the steering rocker arms at the left and right ends, and the other end of the steering rocker arm One end is respectively hinged with the steering knuckles at both ends, and the steering knuckle is driven to swing left and right around the upper and lower hinge seats of the axle housing. The invention has the advantages of simple and reasonable structural arrangement, high power density ratio, large starting torque, stable low-speed operation, small turning radius and good performance; the connection of hydraulic pipelines is more reliable, and the use and sealing performance are better.

The invention discloses a multivariable feedback linearization control method for a variable frequency pump controlled motor speed adjustment system. Based on comprehensive analysis over operating characteristics of a permanent magnet synchronous motor, a multivariable feedback linearization control strategy for the variable frequency pump controlled motor speed adjustment system is put forward from a decoupling control angle; a mathematical model is built, an original nonlinear system is mapped to a simple linear system via accurate feedback linearization after system feedback linearization conditions are determined, and therefore system decoupling control is realized; poles of the system can be configured on a complex plane according to requirements, and static and dynamic performance of the system can be improved. The control strategy put forward in the invention is high in robustness against load disturbance and has control effects of short response time and high speed tracking precision; the control strategy is suitable for the variable frequency pump controlled motor speed adjustment system.

The invention discloses a humanoid robotic arm based on mixed driving of multiple artificial muscles. It includes a motor-driven gimbal, a pneumatic muscle (PAM) bionic elbow joint, a shape memory alloy (SMA) bionic wrist joint, and an IPMC bionic hand. The shoulder joint has 2 degrees of freedom in rotation; the elbow joint has 3 degrees of freedom in rotation; the wrist joint has 2 degrees of freedom in rotation; the bionic hand contains 4 fingers and 11 degrees of freedom, so the robotic arm has a total of 18 degrees of freedom. The gimbal and the elbow joint are connected through a shaft, the elbow joint and the wrist joint are connected through three bolts, and the wrist joint and the bionic hand are connected through threads. Compared with motor-driven robotic arms of the same specifications, this robotic arm has the advantages of simple structure, high power density ratio, good safety, and strong flexibility. By imitating the skeletal-muscular system of the human upper limb, the robotic arm has better flexibility and Biomimetic features. The invention can be widely used in fields such as home services, rehabilitation medical care, disaster relief and rescue, and material transportation.

The invention discloses a swash plate of a novel hydrostatic supporting structure. The swash plate is rotationally fixed into a closed pump through a DU bearing. The closed pump is internally providedwith a plunger sliding shoe assembly arranged around a rotation shaft of the closed pump in the circumferential direction. The swash plate is provided with a swash plate work face making contact withthe plunger sliding shoe assembly and a swash plate runway making contact with the DU bearing. An oil inlet hole is formed in the swash plate work face, and an oil outlet hole is formed in the swashplate runway. The oil inlet hole communicates with the oil outlet hole through an oil way pipeline. The lubricating oil enters from the oil inlet hole to the oil outlet and overflows, and accordinglyoil film lubrication can be formed on the swash plate runway, making contact with the DU bearing, of the swash plate. According to the swash plate, through the arrangement of the oil inlet hole, the oil outlet hole and the arrangement of a pressure one-way valve in the oil way pipeline communicating with the oil inlet hole and the oil outlet hole, and the problem about oil film lubrication betweenthe closed pump swash plate and the DU bearing is solved; and meanwhile, the swash plate runway is provided with a texturing area so that establishing of a lubricating oil film can be facilitated, and the problems of friction losses and swash plate runway abrasion are further solved.

The invention provides a power transmission integrated electric wheel. The power transmission integrated electric wheel comprises an outer rotor hub motor (1), a planetary reduction gear, a reducer shell body, an elastic component (36), a steering stand column (7), a disc brake and a vehicle wheel; and power is generated through the outer rotor hub motor (1), the power is input into the planetary reduction gear through a sun wheel (27) connected with the outer rotor hub motor (1), a gear ring (16) maintains a braking state, the power is output to a rim (10) through planetary wheels (26) and a first planetary carrier (19), and drives the vehicle wheel. The elastic component (36) is arranged between the shell body (11) and the steering stand column (7) and used for shock adsorption treatment on the outer rotor hub motor (1) and the planetary reduction gear integrally; and a matching surface is designed between the shell body (11) and the steering stand column (7), and the degree of freedom of the motion of the outer rotor hub motor (1) and the planetary reduction gear is limited to the vertical direction. The power transmission integrated electric wheel is high in integration degree and good in shock absorption effect, and shock absorption of the integrated electric wheel is achieved.

The invention provides a gear box for a wind power jigger and the jigger. The gear box for the wind power jigger comprises a first shell, a second shell, a first false planetary transmission mechanism and a second planetary transmission mechanism. The first housing has an input end assembly. The second housing has an output end assembly. The first false planetary transmission mechanism is arranged in the input end assembly and used for being in transmission connection with a motor capable of inputting torque. The second planetary transmission mechanism is arranged in the output end assembly, the first false planetary transmission mechanism is in transmission connection with the second planetary transmission mechanism, and the second planetary transmission mechanism is used for being connected with a wind power main gear box, so that torque input by the motor is transmitted to the wind power main gear box. On the premise that high power and large torque are met, the structure is compact, the size is small, the weight is light, disassembly and assembly are convenient, the operation difficulty is low, fan installation and overhaul operation is facilitated, efficiency is improved, and operation cost is reduced.

The invention discloses an SMA (shape memory alloy) driven two-degree freedom human eye simulation mechanism. The SMA driven two-degree freedom human eye simulation mechanism mainly comprises two left-and-right driving mechanisms, an upper-and-lower driving mechanism and two middle connecting pieces, wherein simulated human eyeballs are installed on the middle connecting pieces, the left-and-rightdriving mechanisms drive the corresponding middle connecting pieces to rotate leftwards and rightwards respectively, and the upper-and-lower driving mechanism drives the two middle connecting piecesto rotate up and down simultaneously. The two left-and-right driving mechanisms and the upper-and-lower driving mechanism adopt three pairs of SMA driving springs for driving, SMAs are high in power density ratio, low in driving voltage, small in volume and low in noise, and the requirements of reducing the volume and simulating the head of human can be satisfied under the situation that driving force / torque is met. Through transmission of transmission devices in two directions, up-and-down and left-and-right movement of the eyeballs can be realized, and two-degree freedom motion is completed. The SMA driven two-degree freedom human eye simulation mechanism can be applied to occasions and scenes of man-machine interaction such as facial expression robots, human head simulation robots andservice robots.

A multi-rotor motor or generator, including a first rotor, a connecting rod, a second rotor, and an eccentric member, the eccentric member is arranged on a frame, the first rotor is rotatably arranged on the frame, and the connecting rod One end of the connecting rod is rotatably set on the first rotor, the other end of the connecting rod is rotatably set on the second rotor, the second rotor is rotatably set on the eccentric member, and a magnetic pole is set on the second rotor . The multi-rotor motor or generator of the present invention relates to the field of motor or generator equipment, and is different from the existing motor or generator in which the magnetic poles are respectively arranged on the stator and the rotor. The magnetic poles of the present invention are all arranged on the rotor. The present invention The advantages of the motor or generator are light weight, small size, wide range of high-efficiency working range, high electromechanical conversion efficiency, and large power density ratio.