42results about How to "Protect the motor" patented technology

A positioning ring structure for a motor includes an axial tube, a bearing mounted in the axial tube, and a positioning ring mounted in the axial tube for retaining the bearing in place. The positioning ring includes a central hole extended through by a shaft. The positioning ring includes at least one circulating hole facing an inner circumferential wall of the axial tube. The circulating hole is a through-hole. The lubricating oil that has flowed outward via the central hole of the positioning ring flows back into the axial tube via the circulating hole. Thus, the circulating hole provides a circulating path for the lubricating oil, prevents outflow and loss of the lubricating oil, protects the motor by preventing wear to the shaft and the bearing, and prolongs the life of the motor.

The present invention relates to provide an air-guiding cover, comprising: an inner ring; an outer ring being arranged around the inner ring and defining a windward plane between the outer ring and the inner ring; and a plurality of air-guiding fins being arranged in the inner ring. The air-guiding fins have an inclination with respect to a normal axis of the windward plane, and the inclination increases progressively as the air-guiding fins extend from the inner ring toward the outer ring.

The invention discloses a cash outlet control device for preventing clamping injury and self-service equipment. The cash outlet control device comprises a supporting base, and the supporting base is provided with a strobe, a transmission shaft and a power source; the transmission shaft is connected with the strobe in a transmission mode to enable the strobe to generate displacement relative to the supporting base along with the rotation of the transmission shaft to close or open a cash outlet; the transmission shaft is provided with transmission components used for conveying power source driving force, and the transmission components can drive the transmission shaft to rotate in a whole. When external force impedes the strobe to close the cash outlet, relative rotation occurs between the transmission components and the transmission shaft to keep the transmission shaft still. According to the cash outlet control device for preventing clamping injury and the self-service equipment, the situation of clamping injury is effectively avoided in the case of not impeding the normal cash output. The cash outlet control device for preventing clamping injury and the self-service equipment are safe and reliable, can protect a motor, and are simple in structure and easy in practical application, and the service life of the device is prolonged.

The invention provides wide-voltage electric vehicle anti-theft apparatus with a short-circuit protection and a working method, and relates to anti-theft apparatus and a working method thereof. A coil of a relay of a conventional anti-theft apparatus, which is controlled in a voltage reducing manner through a high power transistor and a large resistor, consumes electricity, has a small operating voltage range, and requires high cost; and the anti-theft apparatus cannot judge short circuit, so that once an electric vehicle is short circuited, the electric vehicle anti-theft apparatus is burnt out when electric start is conducted or an alarm is given, and fire is caused in severe cases. The electric vehicle anti-theft apparatus comprises a detection device, an anti-theft device and a control device, wherein, the control device comprises a relay. The electric vehicle anti-theft apparatus is characterized in that the control device comprises a relay control unit; the relay control unit comprises a single chip computer, a power source voltage detection circuit connected with an input port of the single chip computer, and a relay control circuit connected with a pulse width modulation signal output port of the single chip computer; and the single chip computer is provided with a pulse width computation module and a pulse width signal output module. The relay has a wide working voltage and consumes little energy; and as the anti-theft apparatus can detect short circuit, the safety performance is high.

The invention relates to a servo main punching head structure for a numerical control turret punch press and specifically relates to a small eccentric crank connecting-rod transmission mechanism with variable length of a punching head. The small eccentric crank connecting-rod transmission mechanism comprises a crankshaft and a striking rod; a motor for driving the crankshaft to rotate is arranged on an end part of the crankshaft; a connecting rod is arranged on an eccentric section of the crankshaft; a plunger is arranged on the end part of the connecting rod; a thread is arranged on the outer surface of the middle section of the plunger; a non-cylinder part is arranged on the lower section of the plunger; a nut is arranged on the outer surface of the plunger with a threaded section; the nut is in threaded connection with the plunger; a worm gear is arranged on the periphery of the plunger; and the plunger and the nut are axially encircled by the worm gear. The small eccentric crank connecting-rod transmission mechanism is reasonably designed. According to the design, an eccentric distance of a main eccentric section of the crankshaft is reduced, the crankshaft can rotate for a whole circle and the punching processing is not dependent on the frequently accelerating, decelerating and reversing of the motor, so that the property of a main driver and the frequency of the punch press are promoted, the motor and the driver are protected, the rotational inertia of a driving system is reduced and the energy consumption is reduced.