32results about How to "Avoid motor damage" patented technology

The invention relates to an automatic sealing machine and a program-controlled method. A transmission bracket driven through a gear rack and a motor is installed in an overall bracket, and a compression spring, a sealing handle and a stamp connected through a thread through-hole are installed in the transmission bracket. The sealing handle is pressed between the compression spring and a transmission bracket bottom board. The automatic sealing saves the manual trouble, is time-saving and labor-saving. The arrangement of the compression spring ensures that the descending process of the stamp becomes the optimal sealing process, avoids the damage to the motor, and provides a transient time from the stamp pressing to the stamp lifting. After the sealing handle is taken out, the stamp oil is very convenient to be refilled from the through-hole. A single-chip microcomputer is arranged and controlled through a program; a DC motor two-way drive circuit including a field effect pipe, the loss is low, the directional change is quick and the control is convenient. A photoelectric detector can be used for detecting whether the paper is in place, then the motor is controlled to rotate in the forward direction, the stamp descends; the motor is stopped; when the motor rotates in the reverse direction, the stamp ascends; the run-down time is controlled through the program, thereby the sealing is standard, and the effect is good. The automatic sealing machine can be separately used, and can also be matched with any program control system requiring automatic sealing, such as the printing, the separating and the feeding systems of an automatic paying and invoicing terminal.

The invention discloses a cutting device for an aerated block. The cutting device comprises a shell. A protective cover is fixedly connected to the bottom of the shell. A motor is fixedly connected tothe bottom of an inner cavity of the protective cover. An output shaft of the motor penetrates through the inner cavity of the shell and is fixedly connected with a first bevel gear. Second bevel gears are meshed with two sides of the first bevel gear. A rotating rod is fixedly connected to one side, far from the first bevel gear, of each second bevel gear. Through the arrangement of the protective cover, the motor, the first bevel gear, the second bevel gears, the rotating rods, fixing plates, bearings, first belt pulleys, belts, second belt pulleys, threaded rods, fixed blocks, threaded pipes, clamping plates, the aerated block, a cutting body and supporting legs, the aerated block is fixed in the process of cutting by the cutting device for the aerated block, and can be clamped, so that the problem that unstable cutting causes deviation and poor cutting effect and low cutting efficiency is solved, and convenience is brought to users.

The invention discloses a grinding device for valve pipe fittings, comprising a base, a motor is fixedly connected to the left side of the base, the output shaft of the motor penetrates into the inner cavity of the base and is fixedly connected with a first threaded rod, the first The surface of the threaded rod is provided with external threads, and the end of the first threaded rod away from the motor is movably connected with a bearing. The present invention sets the base, motor, threaded rod, bearing, threaded sleeve, movable rod, groove, sliding rod, sliding sleeve, first fixed block, movable rod, first fixed block, support plate, electric telescopic rod, threaded tube , threaded rod and splint can make the valve and pipe fitting grinding device convenient to use, and the height of the valve and pipe fitting grinding device can be adjusted reasonably according to the height of the user, and it has a clamping function to avoid dangerous situations caused by hand-held valve and pipe fittings. The safety of the device improves the working efficiency of the user.

In order to solve the technical problems that an existing manual trimming mode is time-consuming and difficult to guarantee trimming precision, and trimming realized by adopting three-dimensional modeling is difficult to meet practical requirements of real engineering, the invention provides a precise static balance trimming method for a pitch axis of a large-size photoelectric theodolite. The method comprises the following steps: 1) establishing a coordinate system; 2) horizontally leveling the photoelectric theodolite; 3) installing a simulation load on the pitch axis of the photoelectric theodolite, adjusting the installation position until the rotary motion of the pitch axis of the photoelectric theodolite reaches static balance, and measuring the friction torque Td of the shafting; 4)calculating a pitch axis motor torque coefficient KT; 5) measuring a real load eccentric position; 6) performing counterweight mass and position optimization calculation; 7) trimming; and (8) optimizing, rechecking and confirming counterweight mass and position.

The present invention discloses layered sewage treatment equipment which comprises a pretreatment box, a purification box, a water storage tank, a lifting pump box, an isolation screen plate, a first motor, a knife rest, a dragon shaft, a spiral conveying blade, a water pressure sensor, an impeller, a second motor, a lifting pipe, a filter box, a controller, a base, an ozone generator and an arc-shaped scraper. The arc-shaped scraper is matched with the torsion spring so that the scraper head of the arc-shaped scraper can extend into meshes of the isolation screen plate, compared with a traditional scraper, the impurity scraping effect is improved, meanwhile, the loss of the arc-shaped scraper is reduced, and energy conservation and environmental protection are achieved by adopting a timed opening scraping mode; and the controller receives a water pressure signal of the water pressure sensor to adjust starting, stopping and the rotating speed of the second motor, the phenomenon that the motor is damaged due to idling is avoided, meanwhile, a good energy-saving effect is achieved, the sewage filtering efficiency is improved through the bottom-to-top filtering mode of sewage in the filtering box, meanwhile, sludge discharging is facilitated, design is reasonable, and the management cost is reduced.

The invention discloses a mold polishing device. The device comprises a housing, wherein a first box body is fixedly connected to the bottom part of the housing; supporting legs are fixedly connectedto two sides of the bottom part of the housing and are positioned at two sides of the first box body; two motors are fixedly connected to the bottom part of an inner cavity of the first box body; output shafts of the motors pass through the housing and the first box body and extend into the inner cavity of the housing, and the output shafts of the motors are connected to polishing barrels; bearings are fixedly connected to the top part of the housing. According to the mold polishing device, supporting plates, air blowers, air inlet pipes, ventilating pipes, dust collecting ports, air outlet pipes, a second box body, a dust storing box, roller racks and rollers are arranged, so that the wastes produced by polishing can be timely removed and are prevented from flying everywhere to pollute surrounding environment, and the circumstance that a user inhales harmful wastes leading to influence on the body can be avoided; the working efficiency of the user is improved; and the mold apparent mass and the maintaining efficiency can be improved.

The invention discloses a low-rpm drilling fixture with a safety protection function. The low-rpm drilling fixture with the safety protection function comprises an outer tooth shaft sleeve and an inner tooth shaft sleeve. The outer circumferential surface of the front end of the inner tooth shaft sleeve is connected with an adjusting nut. The front end of the outer tooth shaft sleeve is provided with a chuck. Outer teeth are arranged on the outer circumference of the rear end of the outer tooth shaft sleeve. The outer tooth shaft sleeve is sleeved with inner tooth friction plates. Inner teeth are arranged in the inner tooth shaft sleeve and are sleeved with outer tooth friction plates. The outer tooth friction plates and the inner tooth friction plates are located between a limiting end face of the outer tooth shaft sleeve and a limiting end face of the inner tooth shaft sleeve. When the outer tooth shaft sleeve and the inner tooth shaft sleeve squeeze each other, the outer tooth friction plates and the inner tooth friction plates are axially pressed tightly on the two limiting end faces. Through the structure, the inner tooth shaft sleeve is driven to press tightly or loosen the friction plates through the adjusting nut so that the friction moment between the outer tooth shaft sleeve and the inner tooth shaft sleeve can be increased or decreased, and the low-rpm drilling fixture can play roles in transmitting moment and carrying out overload safety protection. Consequently, current surges are completely avoided, and the phenomenon that a motor or a drill bit is damaged is prevented completely.

The invention provides a motor driver verification device, which comprises a human-computer interaction interface, a sensor unit and a processing unit, wherein the human-computer interaction interface is configured to receive a verification instruction of a user on the motor driver, and the verification instruction comprises a series of operation which needs to be executed by the motor driver and a motor driven by the motor driver; the sensor unit is configured to acquire information, and the information is related to the working states of the motor driver and the motor during a period of executing the series of operation; and the processing unit is configured to verify the performance of the motor driver based on the information acquired by the sensor unit.

The invention discloses an automatic valve closing device for leakage of a tap water pipeline, and relates to an article of daily use, in particular to an alarm device for safety closing of a valve in case of tap water pipeline leakage. The automatic valve closing device comprises a fixed shell, a motor and a control circuit, and is characterized in that the fixed shell is mounted on the tap water pipeline, the motor is mounted inside the fixed shell, a shifting fork is mounted on a shaft of the moor, the front end of the shifting fork is inserted into a rotating switch of the valve, the control circuit is mounted on a sidewall of the fixed shell, a control switch on the control circuit is disposed outside the fixed shell, the control circuit is connected with an alarm lamp, a receiver and the motor via conducting wires to form a loop, the alarm lamp and the receiver are mounted outside the fixed shell, the control circuit is further connected with an external power source, a plurality of tap water pipeline flow detecting and signal projecting machines are disposed on various sections of the tap water pipeline, and an anti-rust coating layer coats an inner wall of the valve. The automatic valve closing device has the advantages of novel structure, simplicity in processing, low cost, convenience in use, safety, reliability and the like.

The invention relates to a using method for a movable riverway sludge dredging device. According to the technical scheme, a movable hull and the sludge dredging device are included, a sludge agitator and a double-capacity mixer are used to fully mix the sludge at the bottom of a river with the river water to make the mixture into sewage, a suspending hammer at the front half part of the double-capacity mixer crushes the bulk material which is stirred out at the bottom of the river, and then a soft material such as a plastic bag or a rope is cut by a suspending slicing piece at the rear half part of the double-capacity mixer, so that the generated small-particle sewage is transported to a sewage storage tank in the form of fluid and then is pumped into the sludge treatment tank on the movable hull under the pumping action of a sewage pump for treatment, and the circulating water is sprayed to an inlet of the double-capacity mixer to drive the sludge into the double-capacity mixer to form a circulation. The using method has the beneficial effects that the riverway can be smoothly cleaned, the ecological impact on the riverway is very small, a lot of man-hours can be saved, and the serious influence on the use of the riverway and the traffic is unlikely; and in addition, compared to an existing dredging device, by the adoption of the using method, the efficiency is higher and the cleaning is thorough.

The invention provides an external-rotor brushless motor system which comprises an external-rotor brushless motor unit and a driver. The external-rotor brushless motor unit comprises: a center shaft, housing, bearings, a permanent magnet, a stator armature, a rear cover, a fixed plate and a power line which is connected with the stator armature. The driver comprises: an integrated power module, a microprocessor unit, a rotor position sensing circuit, a power supply processing circuit, an input/output interface circuit and a current sensing circuit. When the external-rotor brushless motor provided in the invention is working, the center shaft is immovable and the housing is rotated. Machinery equipment is directly arranged on the housing, and rotation of the machinery equipment is driven by the rotation of the housing. In the prior art, the center shaft is regarded not only as a connection between the machinery equipment but also as an output of moment. The rotation can be affected when the machinery equipment is not concentric or there is an external force so that functions of the motor can be decreased. In the invention, the above situations can be avoided.

The invention relates to a charging gun locking device for charging equipment, which comprises an electronic lock unit and a processing unit used for detecting the start and end of charging, wherein the electronic lock unit comprises a motor. The locking device further comprises a motor forward rotation control circuit used for locking a charging gun and a motor reverse rotation control circuit used for unlocking the charging gun. The processing unit is connected with the motor forward rotation control circuit and the motor reverse rotation control circuit. The charging gun locking device effectively avoids the occurrence of an arcing phenomenon caused by mistakenly pulling the charging gun in the charging process of the charging gun, and ensures the personal safety of the charging personnel.

The invention relates to a bootstrap capacitor charging control device for a permanent-magnet synchronous motor, wherein the bootstrap capacitor charging control device is applied to a direct-currentmotor or a three-phase inverter power supply. The bootstrap capacitor charging control device comprises a direct-current power source and a three-phase bridge arm driving circuit. The three-phase bridge arm driving circuit includes U-phase, V-phase, and W-phase driving circuits connected in parallel and a current sampling circuit. A sampling resistor detects a bus current during the bootstrap capacitor charging process by each phase; a bus current for charging each phase is determined; the bus current for charging each phase is compared with a set current for starting each phase; first switchelements and second switch elements in the driving circuits are controlled to be in conduction one by one according to a U-phase, V-phase, and a W-phase sequence; and thus respective bootstrap capacitors are charged to drive the motor to work. According to the control device, the hardware resources are simplified; the working reliability of the bootstrap capacitor is guaranteed; the normal operation of the motor is ensured; and time wasting during the bootstrap capacitor charging process and motor damages caused by too heavy charging currents are avoided.

The application discloses an automobile sunroof opener, which comprises an outer casing, the outer casing includes a box body and a cover plate covering the box body; a driving mechanism built in the box body; a gear transmission mechanism driven by the driving mechanism; and connecting gears The transmission chain mechanism of the speed change mechanism, a support partition is set between the transmission chain mechanism and the gear transmission mechanism, and the chain of the transmission chain mechanism is exposed to the outer shell; wherein, the drive mechanism drives the gear transmission mechanism to drive the transmission chain mechanism, so that the chain is retracted Outer casing or release outer casing. The invention uses the chain of the transmission chain mechanism to open and close the sunroof of the car, so as to avoid the problem that the sunroof will only be lifted abruptly when it is stuck by foreign matter, and the sunroof is easily broken or the motor is damaged.

The invention discloses a new energy automobile driving motor protection shell which comprises a shell mechanism, a damping mechanism, a heat dissipation mechanism and a waterproof mechanism, wherein the damping mechanism is located in the shell mechanism, the heat dissipation mechanism is located in the shell mechanism and on the outer wall of the shell mechanism, and the waterproof mechanism is located in the heat dissipation mechanism. When the protection shell is impacted, under the action of inertia, the inner shell is slidably connected to the outer surface of the motor in a sleeving mode, a second layer of protection is provided for the motor, meanwhile, during normal running, the inner shell slides back to the original position, the inner shell is slidably arranged, the flexibility of the device is improved, in the normal running process of the motor, the inner shell does not provide secondary protection for the motor, and heat dissipation of the motor and normal operation of the motor are facilitated. The device can provide double-layer protection for the motor, the outer shell protects the motor, the inner shell reduces impact force generated by collision, the motor is buffered, damage to the motor is prevented, and the device is suitable for various motors of different sizes.

The invention provides a robot power joint with a turbulent flow heat dissipation structure and a robot. The power joint comprises a motor, a joint shell and an end packaging part, the motor is installed in a hollow cavity formed by the joint shell, the end packaging part is located at the end of the motor, a first gap is formed between a rotor and a stator, and a first end gap is formed between afirst end of the rotor and the end packaging part; a plurality of axial airflow channels are formed in the middle of the rotor through spacers; a second gap is formed between the circumferential surface of the stator and the joint shell, a second end gap is formed between the first end of the stator and the end packaging part, and the first end of the stator and the first end of the rotor are thesame end of the motor; the axial airflow channels, the first end gap and the first gap form a communicated first air duct; an axial airflow air duct, the second end gap and the second gap form a communicated second air duct; one end, far away from the first end gap, of the joint shell is provided with a heat dissipation flow channel for communicating the first air duct and the second air duct with the outside.

The present invention discloses an environmental carbon gold horizontal battery assembling line. The environmental carbon gold horizontal battery assembling line comprises an assembling body, the bottom portion of the assembling body is fixedly connected with fourth fixed mounts, the bottom portions of the fixed mounts are fixedly connected with a base, the top portion of the base is provided witha conveyor belt, the bottom portion of the base is provided with a box body, and the top portion of the inner cavity of the box body is fixedly connected with a motor. Through arrangement of the motor, a first bevel gear, a second bevel gear, a rotation rod, a first tape reel, a belt, a turbine, a second belt disc, a panel, a first fixing block, a second fixing block and a screw, the height of the environmental carbon gold horizontal battery assembling line can be regulated to facilitate production operation by production workers and avoid generation of physical complaints of the production workers because the production workers stoop or stand for a long time so as to greatly improve the production efficiency, facilitate improvement of the product quality and bring huge economic benefitsfor enterprises or the individual.

The invention discloses a self-adaptive control method and device for a food waste disposer, and relates to the field of food waste disposers. The self-adaptive control device comprises a machine body, the upper portion of the outer surface of the machine body is sleeved with a sound insulation cover, a water tank connector penetrates through the top of the machine body, a first flange plate is installed at the top end of the water tank connector, a sewer pipe connector penetrates through one side of the machine body, and a second flange plate is mounted at one end of the sewer pipe connector.Through the arrangement of a drying agent storage box and a heater, in the use process of the food waste disposer, a drying agent in the drying agent storage box in a fixed frame can continuously emit smell through a filter screen to dry the interior of the food waste disposer, a PLC board can control the heater to be turned on after the food waste disposer is dried, the food waste disposer is dried, so that a motor in the food waste disposer is prevented from being affected with damp, the device is safer and more durable, and damp damage to the food waste disposer is avoided.

The invention discloses a raw material stirring device for chemical production. The raw material stirring device comprises a shell and a shell cover, wherein a stirring cavity and a closed cavity are formed in the shell; the stirring cavity and the closed cavity are separated through a partition plate; a stirring device is arranged in the stirring cavity; the stirring device comprises a driving motor, a rotating shaft and a stirring rod; a feeding port, a feeding pipe and a cleaning device are arranged at the top of the shell cover; the cleaning device comprises a hydraulic pump, a telescopic rod, a cleaning brush and a water tank; the cleaning brush comprises a fixed plate and bristles fixed to the fixed plate; limiting grooves are formed in the inner walls of the two sides of the stirring cavity; limiting rods are fixedly installed in the limiting grooves; a discharging port is formed in one side of the shell; and a control device is arranged on one side of the shell. According to the invention, the used shell is rapidly and efficiently cleaned through the cleaning device, and raw materials in the shell are stirred and mixed through the stirring device, so stirring efficiency is improved, and great convenience is brought to a user.