43results about How to "Increase motor power" patented technology

A high power low RPM direct current electric motor is disclosed whereby the high power output is achieved in one of two ways or both. In the first case, the need for cooling is reduced simultaneously along with an increase in the utilization of the magnetic field present in the motor permanent magnets. This is achieved by wrapping the electromagnet core with windings that are capable of demagnetizing the rotor permanent magnets under stall conditions. Interlocking motor circuitry is provided which prevents the full activation of these motor windings until motor RPM values reach a safe level. This increases motor power while decreasing resistive losses in electromagnet windings. In the second case, the rotary portion consists of a large diameter relatively flat rotor containing permanent magnets and having built in vanes for moving air over the electromagnet stator windings providing forced air cooling.

In a portable cutting tool configured to perform a cutting operation through movement along the upper surface of a workpiece, when an ordinary inner rotor type motor is used as the drive source, the motor is rotated at high speed to obtain a high output, which is reduced in speed by a speed reduction device to thereby secure an appropriate rotational speed for a rotary cutter. Since the electric motor is rotated at high speed in this construction, there have been problems of noise, vibration, etc. The present invention aims to achieve a reduction in the noise and vibration of the cutting tool.

A direct drive system is incorporated with an outer rotor type electric motor (11) used as the drive source and with a rotary cutter (12) directly mounted to an output shaft (11d) of the motor, and the electric motor (11) is rotated at an appropriate rotational speed for the rotary cutter (12), for example, at approximately 6,000 RPM, whereby it is possible to achieve a reduction in the noise and vibration of the cutting tool 1.

The invention relates to a magnesium alloy processing method, in particular to a method for rolling high-ductility and high-scalability Mg-Al series magnesium alloy plates. The method comprises the steps of milling, heating and heat preservation of a plate, heating and heat preservation of a roller, rolling and cooling, wherein the rolling speed is 10-100 m/min; the rolling reduction of each time of rolling is 45%-80%. As the high-speed single-pass big-dependent-variable rolling is adopted for inducing obvious dynamic recrystallization, fully fine equiaxed grains are generated, and accordingly, the magnesium alloy plates of which the ductility and the scalability are greatly improved are acquired. Besides, as the annealing process is omitted, the manufacturing cost is greatly lowered, and the method is more suitable for large-scale industrial production.

A control system for hybrid vehicles that ensures high motor power while limiting damage on a planetary gear unit is provided. In a planetary gear unit, a sun gear is connected to a first motor, a ring gear is connected to a second motor, and a carrier is connected to an engine. An operating mode of the hybrid vehicle can be selected from a hybrid mode, a single-motor mode, and a dual-motor mode. The control system is configured to shift the operating mode to the hybrid mode if an estimated temperature of the pinion gear is higher than a threshold temperature (step S5), and to the single-motor mode if the estimated temperature of the pinion gear is lower than a threshold temperature (step S7).

A wireless battery snap without any leading out electrical wires and which has at least one button with exposed metal for use in an electrical device for connecting the battery which is safer in use. The spring comprises an insulating support, conductive eyelets, cylindrical socket and plug electrode, spring, contact plate, insulating sheet and insulating cover. At least two electrode holes and protruded base, posts and side walls are provided in the insulating support for securing the contact plate, spring, conductive eyelets and insulating cover. The socket and plug electrodes are held by two conductive eyelets on the insulating support and fastened together with the spring and contact plate. Two button electrodes of the battery disposed on the socket and plug electrodes respectively are connected to the contact plate on the insulating support and spring or two contact poles. In use, it is necessary for the invention to have a set of displaceable electrodes of contact detrudes with two independent poles in the electrical device. The spring permanently contacts and depresses on one of the electrodes of the device, when the electrode is displaced, the contact plate connects with the other electrode or disconnects apart therefrom, causing electrical current to flow or stop.

The present invention relates to a method and an apparatus for controlling the drive system for mobile equipment, when the operator's drive commander is kept constant, electric traction motors are controlled by a torque controller to provide uniform torque, deviations in speeds of the electric traction motors are determined and electric motor power of at least one is varied relatively to the electric motor power of the other in response to a determined deviation in speed to keep the torques uniform. The power control balancing compensates for the torque differences previously encountered when the speeds of the traction motors differ at equal power supplied to the traction motors.

An assemblage of rim and motor casing for electric motorcycle is composed of steel rim and web consisting of several web units and fixed to the casing of motor. Its manufacture includes such steps as rolling steel plate to form steel rim, punching on steel plate to obtain web units, welding the web units to steel rim, and connecting the flange of motor casing with web via screw bolts.

The invention relates to synchronization equipment of a ring-shaped crane double trolley and relates to a ring-shaped crane used in a nuclear power station. The synchronization equipment comprises a travelling trolley containing a driving mechanism, an installation trolley, and a joint operating device connecting the traveling trolley and the installation trolley, and is characterized in that the installation trolley is not provided with the driving mechanism. As only the travelling trolley of the synchronization equipment is provided with the driving mechanism, the driving mechanism of the installation trolley is canceled, the motor power running the driving mechanism is correspondingly added, and the traveling trolley drags the installation trolley by the joint operating device. In this way, the desynchronized problem during the parallel operation of the two trolleys is completely solved, and a set of running driving mechanism is reduced, thus reducing the cost of the product.

An awning adjustment device with variable speed and direction control serves to automatically open and close eclectic types of awnings by way of an elongated rod terminating at a hook. The hook detachably couples to an awning handle or crank mechanism. A motor powers the rod, so as to rotate the rod in variable speeds, directions, and durations. The rotational speed of the rod is either controlled by a user, or controlled by a rotation counter to variably increase or decrease the rotation of the rod, so as to prevent damaging the awning by rotating too fast. The control portion comprises a power on switch, a power off switch, a pause switch, a directional switch, and a speed switch. The motor operatively couples to at least one electrical power source through a power cord, or a battery to receive electrical power for operating the device.

The invention relates to an annular electric propeller driven by an axial magnetic flux motor. The annular electric propeller comprises a shell, the axial magnetic flux motor, a propeller and a bearing assembly. According to the annular electric propeller, the axial magnetic flux motor arranged in water is adopted to directly drive the propeller to rotate, intermediate transmission equipment is eliminated, and the rotor and the propeller assembly are supported by the bearing arranged in water and transmit thrust to the motor and a ship body; intermediate transmission loss between the motor andthe propeller is reduced, efficiency is improved, the structure of a propulsion system is simplified, and noise, vibration and the like are reduced.

Method to shear a strip during the casting step, wherein the casting speed is increased, with respect to a speed of a stationary regime, maintaining the thickness of said cast strip constant to the value corresponding to the speed of a stationary regime, in order to determine the formation of a |liquid core which determines the re-melting of the adjacent skin and the breakage of the strip due to the weight of the part of the strip located under the liquid core.

The invention relates to a mechanical servo main transmission device of a large-tonnage high-speed fine blanking machine. The mechanical servo main transmission device comprises a main slide block, an auxiliary slide block and a drive mechanism, wherein the main slide block and the auxiliary slide block can only linearly move, and the drive mechanism can drive the main slide block and the auxiliary slide block to move at the same time. The drive mechanism comprises a servo motor, a lead screw connected with an output shaft of the servo motor, a slide block arranged on the lead screw in a sleeving manner and can only linearly move, a connection rod L1, a connection rod L2, a connection rod L3, a connection rod L4 and a connection rod L5. One end of the connection rod L1, one end of the connection rod L2 and one end of the connection rod L3 are hinged to the same point. The other end of the connection rod L1 and the other end of the connection rod L3 are hinged to the slide block and the main slide block correspondingly. The other end of the connection rod L2 is a fixed hinge point. One end of the connection rod L4 and the connection rod L2 are fixed into a whole, and the other end of the connection rod L4 is hinged to one end of the connection rod L5, and the other end of the connection rod L5 is hinged to the auxiliary slide block. The movement directions of the main slide block and the auxiliary slide block are opposite all the time. The device is good in dynamic characteristic, reasonable in arrangement, small in vibration, high in machining precision and capable of balancing inertia force.

In a linear motor and the linear compressor having the same according to the present disclosure, a plurality of magnets are coupled to a stator equipped with a winding coil, and a mover core made of magnetic material instead of a permanent magnet is provided on the mover, and by the magnetizing plurality of magnets in the same direction, the motor output can increase by increasing thrust instead of decreasing the centering force for the mover core. In addition, as it is applied to a two-pore motor, it is possible to easily control the mover core and to easily perform an assembly operation and a magnetization operation for the magnet. In addition, as the stator is made of a grain-oriented core, core loss may be reduced and the motor efficiency may be improved.

A method produces a rotor which can rotate about a rotation axis, in particular for an electrical machine of a motor vehicle. At least two rotor body elements are each provided with a number of receiving pockets which are made in an axial direction. Magnet bodies are in each case pressed into the receiving pockets in the rotor body elements with an axial press-in direction. The rotor body elements are joined to one another in such a way that the press-in directions of the magnet bodies point away from one another. Additionally, an electrical machine has a rotor which is produced in this manner.