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

The invention relates to a full-automatic washing machine foam removing system which comprises an inner drum and an outer drum. An outer drum cover is arranged on the outer drum, a nozzle is arranged on the outer drum cover, the nozzle is connected with a water inlet valve through a water inlet pipeline, the spraying direction of the at least one nozzle points to the position between the inner drum and the outer drum, and the water inlet valve is connected with a controller. When washing is finished and dewatering is conducted, the controller sends a command, the water inlet valve is opened, water flow is guided to the nozzle through the water inlet pipeline, the nozzle sprays water to foam formed by detergent rinsed from the inside of clothes between the inner drum and the outer drum, the foam can not be accumulated massively, the inner drum can achieve normal dewatering rotation speed, and a motor is protected.

The invention relates to a shear type pulverizing cutter structure of a food processor. The shear type pulverizing cutter structure of the food processor comprises at least one main shearing cutter and at least one assistant shearing cutter, wherein the main shearing cutter and the assistant shearing cutter are provided with at least one shear knife body respectively; each shear knife body is at least provided with one cutting edge; a cutting edge rotary surface of the main shearing cutter body is opposite to the cutting edge of the assistant shearing cutter body; the distance L between the cutting edge rotary surface of the main shearing cutter body and the cutting edge of the assistant shearing cutter body is more than or equal to 0 mm and less than or equal to 6 mm; the main shearing cutter is connected with a power shaft of the food processor; and the power shaft is a motor shaft or other power shafts of a food processor main body. The shear type pulverizing cutter structure of the food processor has the characteristics of simple structure, low cost and obvious pulverization, and capability of shearing and pulverizing food materials into very small powder.

The invention discloses a method for judging a locked-rotor state of a position-sensorless vector control permanent magnet synchronous motor. The method comprises the steps of A, calculating input power Pin and output power Pout of the motor; B, calculating an error value ERR, wherein ERR=abs(Pin-K1*Pout), and K1 is a coefficient; C, judging whether ERR is greater than or equal to a certain presetvalue P0 or not, if so, returning to the step A, and if not, judging that the motor is in a locked-rotor state, namely, an abnormal steady-state closed-loop state, and entering a step D; and D, blocking the pulse signal output to the inverter by a motor microprocessor. According to the invention, the locked-rotor state of the motor can be accurately judged, the motor is prevented from still entering the steady-state closed-loop state when being changed into the locked-rotor state, the motor is enabled to be in a high-frequency small-amplitude oscillation state, a protection strategy is perfected, the motor is effectively protected, the judgment problem of the locked-rotor state is fundamentally solved, modification is not needed after load replacement, and great convenience is brought tousers.

The invention discloses a tubular motor reduction gearbox with a protection mechanism. The tubular motor reduction gearbox comprises a motor and a reduction gearbox body, the reduction box body comprises an internal gear sleeve, a pressure sensor is arranged on the internal gear sleeve, and the pressure sensor is connected with a control switch; a connection sleeve with a positioning hole is arranged on a rotary shaft of the motor, a connection shaft is arranged in the reduction gearbox body, the interior of the connection shaft is provided with an internal cavity, a guiding block is arrangedin the internal cavity, and an elastic piece is arranged on the guiding block; the connection shaft is provided with a communication hole with a locking rod arranged in, the interior of the connectionshaft is provided with a cavity, the side wall of the locking rod is provided with a limiting block, and sleeved with a driving spring; and the side wall of the connection shaft is provided with a sliding groove communicated with the internal cavity, a sliding block is slidably connected with the interior of the sliding groove, the connection shaft is wound with a coil, and the two ends of the coil are connected with a control switch. The tubular motor reduction gearbox has the following advantages and effects that the effect of protecting the motor can be achieved by adopting the pressure sensor and the motor protection mechanism; the locking device has the effect of being convenient to mount and labor saving; and the stability is high, and the tubular motor reduction gearbox has the effect of noise reduction.

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 winding-lock preventing roller paint brush device, which comprises a main roller paint brush, which is provided with a parallel-mounted front roller paint brush on the front portion, the main roller paint brush drives the front roller paint brush rotate through a friction wheel fixed on the front roller paint brush, the front roller paint brush is provided with a flip lid on the casing, the flip lid is equipped with an inside pressure roller, the pressure roller is supported onto the front roller paint brush. The brush can prevent the main roller paint brush from being fastened by hair or other long fiber.

The invention discloses a granule agitator for processing a building material. The granule agitator comprises a bracket and a rack, wherein the top end of the bracket is fixedly provided with a reciprocating motor; the top part of the bracket is provided with a rotating shaft; one side of the bracket is provided with the rack; the reciprocating motor is connected with the rotating shaft through a conveying belt; two ends of the rotating shaft are symmetrically provided with pulleys; the pulleys are fixedly connected with a hopper through steel wire ropes and fasteners arranged at certain ends of the steel wire ropes; one end of the hopper is connected with an agitation box through a clamping groove; one side of the rack is provided with a motor mounting rack; the rack is fixedly connected with the motor through the motor mounting rack; one side, which approaches the motor, of the rock is provided with a motor protecting cover; the rock is fixedly connected with the motor protecting cover through a sliding chute; the bottom end of the rock is provided with walking wheels. The granule agitator is convenient in feeding, saves much manpower, and is more convenient to use, easy to combine and disassemble, easy to carry, simple in overall structure, low in manufacturing cost, high in practicability and easy to popularize.

The invention discloses a glass lifting control device with a maximum stroke protection function, and relates to the technical field of control. The glass lifting control device comprises an output shaft, wherein the inner wall of the output shaft is fixedly connected with elastic sheets which are uniformly distributed; the inner wall of the output shaft is fixedly connected with springs; the outer sides of the springs are fixedly connected with movable blocks; and the outer sides of the movable blocks are rotatably connected with rollers. According to the glass lifting control device with the maximum stroke protection function disclosed by the invention, blocking blocks are matched with gears for use, so that when a motor works, the output shaft drives the gears to rotate, and the gears do not rotate when a car window moves to the maximum stroke, and therefore, the output shaft continuously rotates through action of the motor; moreover, the blocking blocks are extruded into a mounting base while the output shaft drives the mounting base to idle on the middle parts of the gears, so that an overload operation condition of the motor is avoided, and therefore, the effect of protecting the motor is achieved, the motor is prevented from being burnt as a result of over-load operation, and the service life of the motor is prolonged.

The invention discloses an elastically-clamped bi-directionally-useable protection device for a motor and belongs to the technical field of motors. The device includes a housing; the inner wall of theleft side of the housing is movably connected with a gear; a sliding block meshed with the right side of the gear is movably connected to the inner wall of the right side of the housing; a connectingblock slidably connected with the inner wall of the housing is fixedly connected to the middle of the sliding block; first springs distributed evenly are fixedly connected to the top and the bottom of the connecting block; piston rods are fixedly connected to the outer sides of the first springs; and fixing rods are movably connected to the outer sides of the piston rods. The elastically-clampedbi-directionally-useable protection device for the motor of the invention, a movable electric column is matched with a fixed seat so as to be used; and when glass is lifted to a limit state, the sliding block can also move to the top or the bottom under the transmission action of the gear, and the corresponding movable electric column can be separated from the electric contact of the fixed seat todisconnect the circuit of the motor, so that the motor stops working, the motor is effectively protected, and the service life of the motor is prolonged.

A motor overcurrent protection device connectable to a motor. The motor has a rotary shaft and a controlling port. The motor overcurrent protection device includes a sensing unit, a driving unit and a controlling unit. The sensing unit includes a magnetic block arranged on a circumference of the rotary shaft and a Hall device positioned beside the rotary shaft. The magnetic block is rotatable along with the rotary shaft to be instantaneously aligned with the Hall device. The driving unit is electrically connected with the controlling port of the motor. The controlling unit is electrically connected with the sensing unit and the driving unit. When the motor operates, each time the magnetic block is aligned with the Hall device, the Hall device outputs a pulse signal which is stored in the controller of the controlling unit. All the pulse signals are summed up in a preset sensing time of the controller. In the case that the sum does not exceed a standard rotational speed value, the controlling unit via the driving unit will stop the motor from operating so as to protect the motor from malfunctioning due to rising of current.

The invention relates to an automotive sun-shading curtain, belongs to the field of automotive accessories, and discloses a control device for an automotive sun-shading curtain, which is used for controlling the sun-shading curtain. The control device for the automotive sun-shading curtain is characterized by comprising a control key, a control panel provided with control loops, and a motor for pulling the sun-shading curtain, wherein the control key is electrically connected with a signal input interface of the control panel; an output interface of the control panel is electrically connected with the motor; a current sensor is arranged on the loop of the motor for pulling the sun-shading curtain; the control loop comprises an input signal analysis module of the control key, a motor state judgement module, a signal processing module and a signal output module; the current sensor is electrically connected with the motor state judgement module of the control loop; the input signal analysis module analyses control signals conveyed by the control key; and the signal processing module judges and processes all the signals to obtain action signals, and outputs the action signals to the electrically-connected motor via the signal output module, so as to control the movement of the motor, thus controlling states of the sun-shading curtain.

The invention provides a flywheel energy storage device. The flywheel energy storage device comprises a shell; a mandrel; a first radial electromagnetic bearing; a second radial electromagnetic bearing; a first protection bearing; a second protection bearing; a motor; a flywheel; and a friction limiting piece; wherein a radial gap between a stator and a rotor of the second radial electromagnetic bearing is b; the radial clearance between the inner ring of the second protection bearing and the mandrel is a, and a is less than b; the radial gap between the stator and the rotor of the motor is c, and c is greater than b; the motor comprises a wheel body and a hub, and an annular space is formed by the inner ring wall and the outer ring wall of the hub, the friction limiting piece comprises an extending part extending into the annular space, the radial gap between the extending part and the inner and outer ring walls is d, and d is smaller than b. By arranging the friction limiting piece, radial vibration displacement of the mandrel is forcibly limited, the motor rotor is protected against friction with the motor stator, the bearing rotor of the radial electromagnetic bearing is protected against friction with the bearing stator in cooperation with the protection bearing, and the electromagnetic bearing and the motor are better protected; and the use safety and the service life of the flywheel energy storage device are ensured.

The invention discloses a ventilation device which comprises a cylindrical shell. The shell is embedded into a wall. A supporting frame connected with the wall is arranged at the lower end of the shell. The shell comprises a motor and a filter bin. The motor is fixed to the right side of the middle portion of the shell through a fixing frame. An iron net is hinged to the right end of the shell. Fan blades are arranged at the right end of the motor. A filter layer with the two sides chamfered is arranged between the fan blades and the iron net. A bin door is arranged on the shell and communicated with the filter bin. The filter bin comprises a filter core and a plurality of filter core layers. The filter core is wrapped with the filter core layers. A switch box and a power line are further arranged on the shell and connected with the motor. A ventilation pipeline is arranged at the left end of the shell and connected with the filter bin. The ventilation device is reasonable in structure and convenient to clean and replace, has a filtering function and enables air to be fresher.

The invention provides an over-current protection self-locking circuit and an air conditioner. By arranging a voltage changing unit, a first comparator can be enabled to maintain the relative state ofthe level of a same-phase input terminal and the level of an anti-phase input terminal after becoming a first level signal through over-current protection by high-current trigger, so that the level state of an output terminal of the first comparator is maintained, and a processor can detect an overvoltage or over-current protection signal in time so as to implement protection to protect a motor.The over-current protection self-locking circuit avoids the situation that repeated loss of a power module is prone to occurring in a traditional over-current protection circuit, and the motor can beeffectively protected, and the service life of the motor and the service life of the air conditioner are prolonged.

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 discloses a high-efficiency heat dissipation motor, which comprises a motor casing, a heat dissipation casing, a front end cover, a stator, a rotor, a rear end cover, a heat dissipation fan and a wind cover. The stator is installed on the inner side of the motor casing, and both ends of the motor casing have grooves, the front end cover and the rear end cover are stuck in the groove of the motor casing, and the front end cover is stuck on the front end of the motor casing, so The rear end cover is stuck on the rear end of the motor casing, the rear end cover has a vent, the rotor is installed on the front end cover and the rear end cover, the heat dissipation fan is installed on the shaft of the rotor, and the wind cover is installed on the rear end cap. The heat dissipation fan of the high-efficiency heat dissipation motor blows towards the inside of the motor. The air flows through the inside of the motor and the heat dissipation shell to take away the heat from the inside of the motor and the heat dissipation shell. This heat dissipation method can efficiently dissipate the heat generated by the motor. , well protected the motor.

The invention provides a motor tight-hanging device of a horizontal type wood splitting machine. The motor tight-hanging device comprises a machine body, a motor, a motor front cover and a motor connecting bracket, wherein the motor front cover of the moor is provided with the motor connecting bracket; opened holes of the machine body are provided with cover-shaped nuts; and the motor connecting bracket is fixed on the machine body by connection of bolts and the cover-shaped nuts. The motor tight-hanging device is simple and firm, the cost is low and the safety of the connecting mode of the motor is greatly improved.

The invention discloses a water treatment device convenient to move. The water treatment device comprises a box body, protection boxes are fixedly connected to the two sides of the bottom of the box body, wheel outlets are formed in the bottoms of the protection boxes, a fixing plate is fixedly connected to the bottom of an inner cavity of the box body, a motor is arranged on the back face of thefixing plate, and a rotating rod is fixedly connected to an output shaft of the motor. According to the invention, the wheel outlets, the fixing plate, the motor, the rotating rod, a driving gear, a first driven wheel, a second driven wheel, a telescopic rod, a steel cable buckle, a sliding sleeve, a sliding rod, pulleys, a support plate, support legs, universal wheels, a compression spring, a support plate, a block plate and a water treatment device are arranged; in equipment using process, the universal wheels can be popped out, so that the effect of convenient movement is achieved, and meanwhile, the problems that a traditional water treatment device is inconvenient to move, the working intensity of installation workers is increased, and installation and popularization of the water treatment device are influenced are solved.

The invention discloses an overload buffering mechanism for a paper shredder. The overload buffering mechanism for the paper shredder comprises a motor and a driving paper-shredding rotating shaft driven by the motor, wherein the driving paper-shredding rotating shaft is provided with a driving paper-shredding gear, a buffering block which is coaxial with the driving paper-shredding gear, a buffering gear sleeved outside the buffering block and a rolling element arranged between the buffering block and the buffering gear; the center of the buffering gear is provided with an accommodation hole limited by a first inner circumferential wall; the periphery of the buffering block forms a first outer circumferential wall which is provided with at least one buffering groove consisting of a bottom wall and side walls formed at both ends of the bottom wall; and the buffering block is accommodated in the accommodation hole of the buffering gear, and the rolling element is arranged in the buffering groove and closely clamped between the bottom wall and the first inner circumferential wall. The mechanism can effectively protect mechanical components and motors of paper shredders when the overload condition appears, so that faults such as gear slippage and/or motor burnout and the like are avoided; therefore, the overload protection of the paper shredders is further realized.

The invention discloses a load-based speed control method and device, a robot and a storage medium. The method comprises the steps that according to the relation between the movable speed of the robotand the preset load weight, the movable speed is planned into multiple speed intervals, and the preset load weight is planned into multiple preset weight intervals, wherein the multiple speed intervals correspond to the multiple preset weight intervals; the load weight of the robot is obtained, and the preset weight interval corresponding to the load weight is determined; a target speed intervalof robot movement is determined on the basis of the speed interval corresponding to the preset weight interval; and the robot is controlled to move according to the speed value in the target speed interval. The weight interval of the robot is determined through the load weight of the robot, the moving speed of the robot is determined according to the weight interval, the robot is controlled to move at the moving speed, it is guaranteed that the robot outputs stable power, thus a robot motor is protected, and the service life of the robot is prolonged.

The invention discloses a special transmission apparatus for an agitator. The special transmission apparatus comprises a motor, a reducer, a coupling, a frame and a shaft seal apparatus, wherein the upper end of the frame is equipped with the reducer, the upper end of the reducer is equipped with the motor, the coupling is connected with the lower end of the reducer, the frame is made of steel products, the interior of the frame is equipped with the coupling, the shaft seal apparatus is arranged at the lower end of the coupling, and the lower end of the shaft seal apparatus is provided with abase. According to the special transmission apparatus, the connection between a power apparatus and a stirring shaft is realized by the coupling, so that force conditions of the stirring shaft and a support bearing of the stirring shaft are in good condition. The rotation speed is reduced to a required rotation speed by the motor and the reducer, and then the stirring shaft is driven to rotate bythe coupling. The frame is arranged under the reducer, and the base is welded on a sealing head in order to protect the coaxiality of the transmission apparatus and the shaft seal apparatus and be convenient to assembly and disassembly, and the whole transmission apparatus and the shaft seal apparatus are both installed on the base together. The apparatus has reasonable structure, few and simple links, reliable transmission, and easy installation, maintenance and transport.