49results about How to "Achieve direct drive" patented technology

The invention belongs to the field of electric control and particularly relates to a device and method for controlling a stepping motor. The device for controlling the stepping motor is composed of a computer, a single-chip microcomputer, a control signal optoelectronic isolation circuit, a linear non-stabilized-voltage supply, an output current control circuit, a driving circuit, a winding current acquisition circuit, a reference voltage comparison circuit and a feedback signal optoelectronic isolation circuit, wherein the computer is in communication with the single-chip microcomputer so that remote setting of parameters of the stepping motor can be achieved, the single-chip microcomputer controls the high-precision rotation, achieved through the stepping motor driving circuit, of the stepping motor according to the set parameters, current signals fed back by the winding current acquisition circuit and the number of actual walking pulses are acquired at the same time, and thus high-precision control over the high-power stepping motor is achieved.

The invention relates to the technical field of material testing and particularly relates to a high-frequency in-situ imaging fatigue tester. The tester comprises a tester body, a test sample clampingmechanism, a preset force loading mechanism and a voice coil motor, wherein the test sample clamping mechanism is used for clamping and fixing a test sample, and the test sample clamping mechanism comprises a first clamping assembly and a second clamping assembly which are arranged oppositely; the preset force loading mechanism is arranged at one side of the first clamping assembly of the test sample clamping mechanism and is used for applying preset tension and pressure to the test sample; and the voice coil motor is fixedly connected to the tester body, and a moving shaft of the voice coilmotor is connected to the second clamping assembly. The voice coil motor is utilized for realizing high-frequency actuation to perform high-frequency fatigue on the test sample, and high-energy X-raysare utilized for performing three-dimensional imaging on fatigue damage inside materials, thereby researching the high-cycle and even ultra-high-cycle fatigue failure mechanism of the materials.

The invention provides a vertical lifting device for a cassette. The vertical lifting device for the cassette comprises an installation flange, a lifting corrugated tube, a lifting sleeve, a connecting element and a vertically-installed linear motor, wherein the upper end of the lifting corrugated tube is connected with the cassette, and the lower end of the lifting corrugated tube is connected with the installation flange; the upper end of the lifting sleeve is connected with the lifting corrugated tube, the lower end of the lifting sleeve is connected with the connecting element, and the linear motor is connected with the connecting element; the linear motor is used for driving the connecting element to carry out a linear motion along a vertical direction, the connecting element is used for pushing the lifting sleeve to drive the lifting corrugated tube to move, and then drive the cassette to ascend or descend along the vertical direction. On one hand, the vertical lifting device for the cassette provided by the invention is capable of simplifying the mechanism of the drive portion of the whole lifting device, and convenient to detach, install and maintain; on the other hand, the vertical lifting device for the cassette provided by the invention is capable of eliminating various location errors brought by intermediate links, and improving the location accuracy thereof.

The invention relates to the technical field of specialized robots, in particular to a two-wheel-leg-caterpillar band compound type movement mechanism. The two-wheel-leg-caterpillar band compound typemovement mechanism comprises a movement seat body, walking wheels, swing leg drive mechanisms and swing leg assemblies. The two walking wheels are installed at the left end and the right end of the movement seat body. Walking wheel drive motors are arranged in the walking wheels. The swing leg assemblies are arranged on the front side and the rear side of the movement seat body. The two swing legdrive mechanisms are arranged on the movement seat body. The swing leg assemblies on the two sides of the movement seat body are driven by the different swing leg drive mechanisms to swing. The swingleg assemblies located on the same side of the movement seat body are connected through a swing leg drive shaft. The swing leg drive shafts are driven by the swing leg drive mechanisms to rotate anddrive the swing leg assemblies to swing. The swing leg assemblies are provided with caterpillar bands. When the walking wheels make contact with the ground to rotate, the caterpillar bands leave the ground, and when the caterpillar bands make contact with the ground to rotate, the walking wheels leave the ground. The problems that an existing robot movement mechanism is poor in maneuvering flexibility, low in movement efficiency and the like on a complex terrain are solved.

The invention discloses a centering type locking mechanism based on piezoelectric motor drive and relates to the technical field of automatic clamping mechanism equipment of machine tools or machining centers. The centering type locking mechanism aims at solving the problems that an existing electromagnetic motor drive type locking mechanism is complex in structure, and electromagnetic interference exists. According to the centering type locking mechanism, a clamp and clamping claws are hinged through bolts, limiting plates are connected with the top ends of side walls of the clamp, a wedge head driving shaft penetrates through two output shaft sleeves, one output shaft sleeve is connected with the center of the bottom surface of the clamp to be fixed, the other output shaft sleeve is connected with a motor fixing plate, a wedge head of the wedge head driving shaft is connected with the bottom ends of the four clamping claws, two driving feet of a piezoelectric motor are connected with the output shaft sleeves, forward voltage and backward voltage are applied to all piezoelectric ceramic pieces on the piezoelectric motor, reciprocating motion of the wedge head driving shaft is controlled by controlling the timing sequence of applying the voltage to the piezoelectric ceramic pieces, and thus the locking and unlocking functions of the locking mechanism are achieved. The centering type locking mechanism can be applied to manufacturing of automatic locking mechanism equipment of numerical control machine tools or machining centers.

The invention relates to a hybrid power driving system, comprising an engine, a planet gear mechanism, a generator and a motor, wherein the engine is provided with an output shaft, the planet gear mechanism comprises a gear ring, a planet frame and a sun gear, the gear ring is connected with the output shaft of the engine, the generator is provided with a generator rotor, the generator rotor is coaxially fixed with the sun gear, the motor is provided with a motor rotor, the motor rotor is connected with the planet frame by virtue of a middle shaft; and a clutch device is arranged between the gear ring and the planet frame. The invention solves the problems that transmission energy loss of the planet gear in an engine hybrid operating mode is high in the series-parallel hybrid power system and a vehicle which is frequently in low-speed traveling operating state is difficult to be located in an high-efficiency operation region in the prior art and further provides a series-parallel hybrid power system which is applicable to a vehicle frequently in low-speed traveling operating state and can cause the vehicle to be located in the high-efficiency operation region.

The invention provides a switch magnetic flux motor for a directly driven electric vehicle, and the motor comprises a switch magnetic flux motor, a rotary transformer, a main reducing gear, a differential mechanism, a semi-axis, an axle housing and driving wheels. The speed of the output power end of the switch magnetic flux motor is reduced by the main reducing gear, the differential operation among the driving wheels is realized through the differential mechanism and transmitted to the driving wheels by the semi-axis so as to realize the power transmission of the whole vehicle; the device is of an integral rotor structure without any coil winding or permanent magnet body and realizes the direct driving of the motor and a driving axle with the rotary transformer as the monitoring and feedback device of the output rotating speed of the motor and the phase of a rotor, with the driving gear shaft of the main reducing gear of the vehicle as a motor shaft, and with the main reducing gear shell of the vehicle as part of the outer shell of the motor. According to the device, the whole structure is compact, particularly a motor rotor has the advantages of simple structure, convenience in use and maintenance, good capability in resisting impact and vibration, low production cost, large output torque, high output rotating speed and the like, and the requirements on the running of the vehicle under various complicated working conditions are met.

The invention discloses a linear motor direct-driven wave power generation system. The system includes a mechanical energy extraction module, a linear generator set module and an electric energy postprocessing module. The mechanical energy extraction module drives a buoy to move by waves, and the buoy is connected with a linear motor rotor iron core through three link rods; the linear generator set module drives the linear motor rotor iron core to vertically move through a hinge connected with a second driven rod, a path that magnetic lines of force pass which are emitted by a permanent magnet inside the motor changes accordingly, so that through constant change of the magnetic flux of copper coils in motor outer stator slots, three phases of approximately sinusoidal counter potential waveforms with constantly changing frequency and amplitude are generated and output; and then rectification, filtering, energy storage and inversion are performed through the electric energy postprocessing module, and usable three-phase alternating current with fixed frequency and amplitude is finally output and is used for electric energy supply of an offshore area or grid-connection processing.

The invention discloses a multi-mode transmission special for hybrid power. The multi-mode transmission comprises an input shaft, a first planetary gear train, a second planetary gear train, an intermediate shaft, a differential mechanism, a first clutch, a second clutch, a first brake and a second brake. The input shaft is connected with an engine through a torque limiting shock absorber; the first planetary gear train comprises a sun gear A, a planet gear A, a planet carrier A and a gear ring A, the planet gear A is arranged between the sun gear A and the gear ring A and installed on the planet carrier A, and the planet gear A is meshed with the sun gear A and the gear ring A; the sun gear A is mounted on the input shaft; the second planetary gear train comprises a sun gear B, a planet gear B, a planet carrier B and a gear ring B. The invention has the beneficial effects that through the arrangement of the first clutch, the second clutch, the first brake and the second brake, the fixed connection mode of the first planetary gear train and the second planetary gear train is changed, static elements in the planetary gear trains are changed, and various transmission ratios are achieved under the condition that no extra gear pair is additionally arranged.

The invention provides a drum extrusion type washing machine improved based on a conventional washing machine, and through change of the washing mode, the washing capability is obviously improved, theabrasion rate is reduced, and the energy consumption is reduced. The drum extrusion type washing machine comprises a housing, a damping device, a water-containing tub, a dehydration tub, an extrusiondevice, an electric control device, a water supply and drainage device, and a driving device. Four corners of the housing are connected to the water-containing tub through the damping device, the dehydration tub is arranged in the water-containing tub, an inner wall of the dehydration tub is provided with two movable extrusion plates, the extrusion plates are rectangular meshed plates bent in a certain radian, the extrusion plates are folded during washing, the extrusion plates isolate the dehydration tub into two independent spaces, clothes can rotate in the water with the dehydration tub and extruded during rotation, the clothes roll over and absorb water when rotation is stopped, and extrusion washing of the clothes can be realized in a circulated and repeated manner. During drying, the two extrusion plates are attached to the inner wall of the dehydration tub under the effect of a centrifugal force due to the special shape of the extrusion plates, and centrifugal dehydration and drying of the clothes are not influenced.

The invention discloses a roller driver (10) for a fiber sheet machine, a sheath (2) of a roller (1) is rotated through shafts (3, 23), the shafts can be rotatably supported on a device support (F) through a bearing (4) arranged in a bearing housing (5); the roller driver is provided with a rotor housing (14) and a stator with a rotor winding, wherein the rotor (12) is arranged in the rotor housing (14); the roller driver comprises a rotor (11) rotatably acting on the shaft, the rotor is surrounded by the stator winding during operation so as to generate an air gap between the rotor and the stator. The rotor is permanently magnetized for achieving the large air gap; for fixing the rotor on the shaft, the rotor is designed that the shaft can support the mass of the rotor; for fixing the stator housing out of the bearing housing, the stator housing is designed for supporting the mass of the stator and the stator housing in a manner independent from the supporting manner of the rotor. The invention further relates to a roller equipped with the roller driver and a method for mounting the roller driver on the roller.

The invention provides a magnetic levitation motion stage provided with controllable excitation linear synchronous motors and used for a vertical machining center. The magnetic levitation motion stage is characterized in that the magnetic levitation motion stage comprises a motion stage, a base, the controllable excitation linear synchronous motors, a levitation control system and a motion control system. The magnetic levitation motion stage has the advantages and effects that the electromagnetic thrust force is changed by adjusting the current of armature windings; the magnetic levitation forces are the unilateral magnetic pull generated between excitation magnetic poles on stators and rotor iron cores of the linear synchronous motors and are adjusted by adjusting the exciting current; the motion stage depends on the magnetic levitation forces generated by the two motors to operate and has the capacity of direct automatic levitation.

The invention relates to a connecting device which is required for connecting a pile casing when a rotary drilling rig power head is in construction for stratum easy to collapse. A driving and connecting device provided by the invention consists of a power head connecting shaft, a connecting body, pin shafts, a stop pin, a split pin and a pile casing driver. The lower end of the power head connecting shaft is connected with the upper end of the connecting body through 8 pin shafts which are uniformly distributed along the periphery direction, and the stop pin and the split pin limit axial float of the 8 pin shafts. The lower end of the connecting body is connected with the pile casing driver through 2 pin shafts. The power head directly drive the pile casing through the connecting body and the pile casing driver when in rotation and pressurization. The connecting body in the device consists of two parts; the upper and lower parts of the connecting body are respectively welded on an intermediate ring plate; an external ring arranged at the upper part of the connecting body is a ring plate; an internal ring arranged at the upper part of the connecting body are 8 arc-shaped plates which are uniformly distributed along the periphery direction; the external plate and the internal plates are welded on the intermediate ring plate to form 8 grooves for connection with the power head connecting shaft; the lower part of the connecting body are two arc-shaped plates which are intermediately provided with a shaft sleeve in a welding way; and the two arc-shaped plates are symmetrically welded on the intermediate ring plate for connection with the pile casing driver. With the help of the connecting body, the pin shafts, the stop pin and the split pin, the connecting structure provided by the invention effectively realize the drive of the power head on the pile casing.

The invention discloses a gas compressor with a high-pressure ratio for a fuel cell system and an energy recycling turbine device. The gas compressor comprises a gas compressor body, a fuel cell, an electromotor, an energy recycling turbine and a hydrogen source, wherein an input end of the gas compressor body communicates with the atmosphere; an anode input end of the fuel cell is connected withthe hydrogen source through a pipeline; a cathode input end of the fuel cell is connected with the gas compressor body through a pipeline; a cathode output end of the fuel cell is connected with the energy recycling turbine through a pipeline; a transmission gear group is arranged in the energy recycling turbine; a driving gear of the transmission gear group is connected with an output end of theelectromotor through a first shaft; and a driven gear of the transmission gear group is connected with gas compressor impellers of the gas compressor body through a second shaft. According to the gascompressor with the high-pressure ratio for the fuel cell system and the energy recycling turbine device disclosed by the invention, the electromotor and the turbine are arranged aside the gas compressor, and energy discharged from an air exhaust system of the fuel cell is recycled by utilizing the turbine so as to drive the gas compressor, and therefore, power, consumed by driving the gas compressor, of the electromotor is effectively reduced, and the comprehensive efficiency of the fuel cell is effectively improved.

The invention provides a direct driving type rotary transverse moving device, which comprises a rotary moving part, a transverse moving part and a signal transmission control part, wherein a wireless electric power transmission unit is used for supplying electricity to a linear motor driving controller, and in addition, position feedback units of the transverse moving part are respectively positioned on a rotary table top and rotate along with the rotation of a rotary table, so the linear motor cannot be wound by a power supplying power supply wire in the rotating process of the rotary table or cannot be wound by a feedback data wire. In addition, the device adopts a wireless network for realizing the communication between the linear motor driving controller and a main control system, and the winding of various kinds of cables is further avoided, so the complete direct driving of the linear motor without any winding on the rotary table top is realized, and good application prospects are realized.

The invention provides a hub switching structure. The hub switching structure comprises a tire connecting piece, a rotating flange, a bearing assembly, a flange supporting shaft and a driving unit, wherein the flange supporting shaft is internally provided with an accommodating space, and the driving unit is installed in the accommodating space; an output shaft of the driving unit is fixedly connected with the rotating flange so as to drive the rotating flange to rotate around the flange supporting shaft; and the tire connecting piece is fixedly connected with the rotating flange. According tothe hub switching structure provided by the invention, the driving unit can directly drive wheels to rotate, and the hub switching structure can adapt to the wheels with different diameters.