38results about How to "Precise control of rotation speed" patented technology

The invention discloses a full-automatic fire fighting lifesaving air cushion. The full-automatic fire fighting lifesaving air cushion comprises a framework, an air cushion body, a battery, an MCU, Doppler radar, rightwards and downwards inclined Mecanum wheels, rightwards and upwards inclined Mecanum wheels, wheel hub covers, motors and bolts. Motor shells are disposed at the four corners of the framework correspondingly, and the motors are arranged in the motor shells correspondingly; the battery, the MCU and the Doppler radar are arranged in the center of the framework in sequence from bottom to top; the air cushion body is located on the upper portion of the framework; the Doppler radar performs to-air scanning upwards and transmits impulse wave with fixed frequency through a center through hole of the air cushion body, and if the echo frequency is increased, the MCU judges that an object drops; from the angle of looking down, the Mecanum wheels include the rightwards and downwards inclined Mecanum wheels and the rightwards and upwards inclined Mecanum wheels in the axis directions of rollers on the Mecanum wheels; and the motors are used for driving the assembly of the four wheels so as to drive the framework and the air cushion body to move rapidly in all directions on a horizontal plane. By means of the full-automatic fire fighting lifesaving air cushion, the defects of traditional fire fighting lifesaving air cushions are overcome, full automation is achieved, and important significance to further guaranteeing of life and property security of people is achieved.

The invention provides a synchronous online symmetric stretching device. The synchronous online symmetric stretching device comprises a symmetric stretching mechanism, a transmission mechanism, a supporting frame and a programmable logic controller, wherein the symmetric stretching mechanism is mounted in the supporting frame, one end of the symmetric stretching mechanism is connected with the transmission mechanism, and the transmission mechanism is connected with the programmable logic controller. The symmetric stretching mechanism comprises two screw-nut pairs, sliders and press plates, the screw-nut pairs are mounted on one side in the supporting frame, each screw-nut pair comprises a screw with two threads opposite in screwing direction and two nuts fittingly in sleeving joint with the two threads, and the ends, on the same side, of the screws pass through the supporting frame to be positioned on the outer side thereof. The synchronous online symmetric stretching device can be disposed in a specific test instrument (such as an x-ray diffractometer and raman spectrometer) and is capable of achieving synchronous online symmetric stretching strictly so as to improve accuracy of detection results.

The invention discloses a circumferential seam single-pass electro-gas welding machine which is mainly composed of a walking track, a cantilever welding machine, an electro-gas welding head, a front side water-cooling slide block, a back-side forming device, a roller frame base, a driving roller frame and a driven roller frame. The cantilever welding machine is installed on the walking track; the electro-gas welding head and the front side water-cooling slide block are integrated to be installed on the cantilever welding machine; the driving roller frame and the driven roller frame are installed on the roller frame base; a barrel to be welded is placed on the roller frame; and the back-side forming device is installed in the barrel during welding. The circumferential seam single-pass electro-gas welding machine has the advantages that the problem of low efficiencies brought by a layer upon layer stacking welding process is solved so that efficiencies are improved; and simultaneously, welding qualities are high, welding control is accurate, and technological blank of the electro-gas welding machine is filled.

The invention provides a wafer positioning device and related method. The device comprises a wafer rotation mechanism, a mark detector and a control module, wherein the wafer rotation mechanism is provided with a rotation center and comprises driving wheels, the driving wheels are in contact with wafers and are used for driving the wafers to rotate around the rotation center, the mark detector is used for detecting positioning marks on the wafers and sending a detection result to the control module, and the control module is used for controlling the driving wheels according to the detection result of the mark detector so as to achieve wafer positioning. In the wafer positioning device, a traditional suction disc suction mode is substituted by employing the driving wheels to drive the wafers, the damage to the wafers can be prevented during positioning, multi-point detection and positioning can be achieved, multi-segment speed control is achieved, and the wafer positioning device is high in efficiency and accuracy, simple in structure and low in cost.

The invention discloses a multifunctional snow removal vehicle with an electric-door-type transmission function. The multifunctional snow removal vehicle comprises a door-type carrying chassis, lifting devices and a snow removal roller; the middle of the door-type carrying chassis is arched, and the two ends of the door-type carrying chassis are of a flat structure; the lifting devices are symmetrically arranged at the two sides of the middle of the door-type carrying chassis; the two ends of the snow removal roller are connected with the lifting devices; each lifting device comprises a firsthinge support base, a second hinge support base, a first connecting frame rod, a second connecting frame rod, a connecting rod and a lifting hydraulic cylinder; each first hinge support base and the corresponding second hinge support base are symmetrically hinged to the two arched ends of one side of the door-type carrying chassis; one end of each first connecting frame rod and one end of the corresponding second connecting frame rod are hinged to the corresponding first hinge support base and the corresponding second hinge support base respectively; one end of each connecting rod is hinged tothe other end of the corresponding first connecting frame rod; one end of each lifting hydraulic cylinder is hinged to the other end of the corresponding second connecting frame rod, and the other end of each lifting hydraulic cylinder is hinged to the other end of the corresponding connecting rod. The invention further provides a control method of the multifunctional snow removal vehicle with the electric-door-type transmission function. The rotation speed of the snow removal roller can be accurately controlled according to specific road conditions and environments, and the snow removal efficiency is improved.

The invention provides a novel three-position rotating workbench with a PLC. The novel three-position rotating workbench comprises a rotating workbench body, position bases, bearing platforms and the PLC, wherein the upper surface of the rotating workbench body is round, the position bases are evenly distributed on the upper surface of the rotating workbench body at the angle of 120 degrees, the bearing platforms are coaxially arranged on the position bases, an encoder is arranged at the position of the center axis of the rotating workbench body, and the encoder is connected with the PLC through a flat cable. By the adoption of the technical scheme, the novel three-position rotating workbench is compact in structure, small in size, light in weight, and strong in anti-jamming capability and load capacity.

The invention discloses a single-welding-gun intelligent welding system for multi-purpose welding and a control method, relates to the technical field of welding machines, and aims to solve the problems that in the prior art, a single-welding-gun automatic welder is not high in intelligent degree, does not have an electric-arc tracking technology, and cannot guarantee high quality and high reliability of welding. The single-welding-gun intelligent welding system comprises a welding trolley, a welding power supply, a power supply adapter, a wireless remote controller, an earth clamp, a protective gas supply system, a travelling rail, a wire feeding box and a controller. The single-welding-gun intelligent welding system has the advantages of achieving fully-automatic welding integrated withan electric-arc tracking technology, achieving multiple purposes, being suitable for welding of different workpieces, and being high in welding quality.

The invention belongs to the technical field of engine test assembly, and in particular relates to a device for quickly adjusting the fuel supply angle and gas distribution phase of an engine, which is used for quickly adjusting the fuel supply angle and gas distribution phase of the engine when the engine is installed. This solution realizes the docking between the reducer and the engine flywheel by installing long plates, connecting shafts and connecting brackets, uses the servo motor to drive the reducer to rotate the flywheel, and realizes precise control of the speed and rotation angle of the engine flywheel through signal feedback. The invention has the function of automatically and precisely controlling the rotation speed and angle of the flywheel. The device can replace manpower to adjust the oil supply angle and gas distribution phase, save working hours, improve labor efficiency and improve working conditions.

The invention provides an automatic aperture driving circuit and an electronic device. The automatic aperture driving circuit comprises a front-end processor, a first digital-to-analog conversion module, a first comparison module, a second digital-to-analog conversion module and a second comparison module, the first digital-to-analog conversion module receives the first digital code from the front-end processor and generates a first analog voltage, the non-inverting input end of the first comparison module receives the first analog voltage output by the first digital-to-analog conversion module, the inverting input end of the first comparison module receives the reference voltage value, the first comparison module compares the first analog voltage with the reference voltage value to control the aperture change speed, the second digital-to-analog conversion module receives the second digital code from the front-end processor and generates a second analog voltage, and the second comparison module compares the second analog voltage with the feedback voltage fed back by the second comparison module to control the opening size of the aperture. The circuit of the present invention can precisely control the opening size of the aperture and the aperture rotation speed.

The invention relates to a bottom driving mechanism of an oxygen inclined blown rotating converter, which comprises a transmission shaft, a pocket beam and a connecting shaft. the bottom driving mechanism is characterized by further comprising a hydraulic motor and a crown gear coupling, wherein the transmission shaft penetrates through the pocket beam and is fixed onto the pocket beam, one end of the transmission shaft is connected with the hydraulic motor, the other end of the transmission shaft is connected with the crown gear coupling, the crown gear coupling is connected with a converter body by the connecting shaft, and the hydraulic motor is externally connected with a hydraulic station. The bottom driving mechanism is modified, accordingly, energy consumption is reduced, work efficiency is improved, the service life of a spare part (a rotating wheel) is prolonged, and the purpose of precisely controlling the rotation speed of the converter body is realized.

The invention provides a stepping motor drive chip function verification system which comprises a man-machine interface, a control panel, a drive panel and a stepping motor. The drive panel is used for setting a slot of a stepping motor drive chip. The man-machine interface, the control panel, the drive panel and the stepping motor are sequentially connected. The stepping motor drive chip to be verified is inserted into a socket of the drive panel, and the stepping motor is driven so that the function of the stepping motor drive chip to be verified can be verified. According to the stepping motor drive chip function verification system, the basic function can be verified, and the accurate stepping function of the stepping motor drive chip can also be verified; by replacing the drive panel suitable for different types of stepping motor drive chips, the functions of the different types of the stepping motor drive chips can be verified; in the verifying process, connecting wires of the stepping motor drive chip do not need to be changed, the function of the stepping motor drive chip can be verified only by sending out a verifying order through the man-machine interface, and therefore the efficiency of verifying the function of the stepping motor drive chip is improved.

The invention discloses a powder feeding device used for manufacturing a three-dimensional object and a powder feeding method of the powder feeding device. The powder feeding device comprises a powderstorage trough, powder feeding hoppers, a powder feeding box, a powder feeding rotating shaft, a first gear, a second gear, a drive mechanism and a control system. The powder storage trough is sequentially provided with at least one first feeding station switch and at least one first discharging station switch from top to bottom. Butterfly valves are arranged at the bottoms of the powder feedinghoppers and are used for controlling whether powder falls to the powder storage trough or not under control of the control system. One end of the powder feeding rotating shaft is connected with the first gear, the second gear is connected with the drive mechanism, and the first gear and the second gear are engaged. When the second gear is driven by the drive mechanism to rotate, the first gear isdriven to rotate, and therefore the powder feeding rotating shaft is driven to rotate, so that powder of the powder storage trough falls to the powder feeding box under rotating of the powder feedingrotating shaft and falls to the powder feeding position through an outlet of the powder feeding box. According to the powder feeding device used for manufacturing the three-dimensional object and thepowder feeding method of the powder feeding device, the rotating speed is stable, the rotating powder discharging speed is stable and fluent, and gear transmission is stable.

The invention relates to the technical field of property management, and discloses a community intelligent bulletin board for property management and a using method thereof. The community intelligent bulletin board comprises a main body frame, an electronic display screen, a central controller, an atomizing pump and a dust collector. The electronic display screen is arranged on one side of the front surface of the main body frame, and the central controller and a circulating display device are arranged in the main body frame; and the circulating display device comprises two circulating driving mechanisms and a display belt, and a cleaner is arranged in the main body frame and located on the side, away from the central controller, of the circulating display device. The display belt is driven by the two circulation driving mechanisms to rotate slowly and circularly, all the content posted on the outer side of the display belt is displayed, all the content can be displayed in a transparent posting window on the front surface of the main body frame, and after one bulletin is displayed for a time longer than a set time of the central controller, the bulletin is cleared through the effect of the cleaner so that the timeliness of the bulletin of the community intelligent bulletin board is ensured, and the use efficiency of the bulletin board is improved.

The invention relates to an edge-driving top-blown converter. The edge-driving top-blown converter comprises a converter body and a rotation power source which are arranged on a machine frame. An axial riding wheel and top pillars are arranged in the axial direction of the machine frame, and radial riding wheels are arranged in the radial direction of the machine frame. In addition, the machine frame is flexibly connected with a converter body bracket ring. Rolling rings are arranged on the upper ring face and the lower ring face of the converter body bracket ring respectively. A tooth ring is arranged in the middle of the converter body bracket ring. One end of the tooth ring is engaged with a gear. The gear is connected with the rotation power source. A tipping supporting shaft is arranged in the machine frame. The two ends of the tipping supporting shaft are fixed to an equipment foundation through support seats, and one end of the tipping supporting shaft is connected with a tipping reduction box provided with a tipping power source. The edge-driving top-blown converter is compact in structure, safe and reliable, and the purpose for accurately controlling the rotation speed of a converter body is achieved.

The invention relates to a dome camera high-precision tracking system and method based on a PID algorithm. The system comprises a dome camera, an algorithm server and a logic control server. The method comprises the steps that the algorithm server carries out intelligent analysis on real-time video data collected by the dome camera and gives out identification result information and auxiliary information of a moving target; the logic control server performs proportion, integration, differentiation and proportion adjustment according to the moving target identification result information and the auxiliary information, and sends a control instruction to the dome camera according to the adjustment result; and the dome camera controls the camera to rotate and / or focus according to the controlinstruction so as to realize high-precision tracking of the moving target. According to the ball machine high-precision tracking system and method based on the PID algorithm, based on the PID algorithm, precise control over the rotating speed of the ball machine is achieved, and therefore high-precision stable tracking of the ball machine on a moving target is achieved.

The invention belongs to the technical field of geotechnical engineering and particularly relates to a dish type solar heat collecting single pile for thermal desorption treatment of soil organic pollutants. The device is composed of a thermal desorption pile body, an escape pile body, a vehicle track racing with the sun, a vehicle racing with the sun, a controller, a dish type mirror and other components. Each thermal desorption pile device is equipped with two escape piles which can be arranged in a hexagonal plum-blossom-shaped combination manner. The local sun track parameters are input into the controller in advance, the controller controls the vehicle racing with the sun to move along the circular-arc-shaped track racing with the sun, and meanwhile a telescopic rod is controlled so that the dish type mirror can be always facing the sun. The heat collecting plate reflects sunlight onto a heat collector, and the heat collector transfers heat to the thermal desorption pile body after being heated, so that the soil is heated, and low-boiling-point organic matter in the soil is heated to escape through the escape piles. The device can utilize solar energy to treat the organic pollutions in the polluted soil by the thermal desorption method, can be arranged in combination and serve together and is a novel polluted soil treatment device.

The invention relates to a sprayer of a dish washing machine. The sprayer comprises a water pipe assembly, a main spraying arm rotatably connected to the water pipe assembly, one or more sub sprayingarms rotatably installed at the end of the main spraying arm and an annular slideway arranged at the lower side of the main spraying arm and slidingly matched with the sub spraying arms. When the mainspraying arm rotates, the sub spraying arms slides along the annular slideway, and under the limit of the annular slideway, the sub spraying arms rotate relative to the main spraying arm. The invention further relates to the dish washing machine provided with the sprayer. Through cooperation of the sub spraying arms and the annular slideway, the water spraying range of the main spraying arm is enlarged, the sprayer has the advantages of being large in spraying covering range and particularly suitable for a rectangular liner of the dish washing machine, the cleaning dead corner can be reduced,and the working efficiency of the dish washing machine is improved.

The invention discloses a fluidized bed powder dipping manipulator, which includes a frame assembly, a hydraulic system, a fluidized bed, and a multistage oil cylinder to drive a mobile support so that the mobile support can move linearly on the track of the frame assembly, thereby driving the pendulum assembly and lifting The oil cylinder moves left and right. The telescopic movement of the lifting cylinder drives the swing frame assembly to swing up and down with the hinge fulcrum of the swing frame assembly hinged on the mobile bracket as the center of rotation. In this way, it is possible to move the parts to be coated from outside the fluidized bed to inside the fluidized bed. Effectively control the dipping time of the parts to be coated to ensure the thickness and uniformity of the coating. After the parts to be coated are dipped in powder, the rotation of the hydraulic motor drives the rotation of the parts to be coated and the vibration of the pneumatic vibrator quickly throws off the excess powder on the parts to be coated.

The invention discloses a hand-cranking pulse turning correction control system of a cold header, and belongs to the field of machining equipment so as to reduce wear to a pneumatic clutch, reduce turning correction noise and increase turning correction precision. Control equipment comprises a frequency converter, a hand-cranking encoder is connected with the frequency converter, and the control equipment is connected with a main motor. The main motor is connected with a flywheel through a belt. The pneumatic clutch is arranged on the flywheel. The flywheel is connected with a main transmission crankshaft through the pneumatic clutch. The main transmission crankshaft is connected with a transmission mechanism. The transmission mechanism comprises a main sliding table, and a mold is arranged on the main sliding table. The main motor operates and can drive the flywheel to operate. The pneumatic clutch arranged on the flywheel is connected with the main transmission crankshaft, the pneumatic clutch and the flywheel can be in two states including engagement and disengagement, and therefore the motion state of the main transmission crankshaft is controlled. The main transmission crankshaft can drive the main sliding table to move, and the main sliding table and the mold arranged on the main sliding table are subjected to turning correction. The hand-cranking pulse turning correctioncontrol system is mainly used for carrying out precise turning correction on the cold header.

The invention discloses an energy-saving operation monitoring system for a screw air compressor. The energy-saving operation monitoring system comprises a monitoring box and a transparent protective door installed on the front face of the monitoring box, wherein a connecting plate is arranged on the back face of the protective door, a sponge block is fixedly connected to the front face of the connecting plate, the side, away from the connecting plate, of the sponge block is in contact with the surface of the protective door, a transmission motor is fixedly connected to the top of the monitoring box, and a connecting rod is fixedly connected to the output end of the transmission motor. According to the energy-saving operation monitoring system, a winding wheel is driven to rotate through the transmission motor and the connecting rod, the winding wheel winds a steel cable and pulls the connecting plate to ascend, and the connecting plate wipes the protective door through the sponge block in the moving process, so that the effect of removing water mist is achieved, and the problems that in the use process of an existing operation monitoring device, water mist can be generated on the surface of the device due to temperature difference, a user is seriously affected in observing and recording operation numerical values, and the user is likely to get an electric shock in the process of wiping off the water mist are solved.

The invention discloses a novel electric injector. The novel electric injector comprises a shell, wherein a storage battery is fixedly connected to the left end of the bottom of an inner cavity of theshell, a voltage stabilizer is fixedly connected to the right end of the bottom of the inner cavity of the shell, a partition plate is fixedly connected to the lower end of the inner cavity of the shell, a liquid medicine box is fixedly connected to the top of the partition plate, and a stepping motor is fixedly mounted at the lower end of the left side of the liquid medicine box; and a peristaltic pump is connected to the driving end of the stepping motor, and a liquid medicine output hole is formed in the left side of the shell and located in the top of the partition plate. The stepping motor is driven by the storage battery, the output dosage and pressure of liquid are controlled by controlling the number of turns and the speed of the peristaltic pump driven by the stepping motor, andunder the condition that a special injection handle, a needle head and a needle head box are matched, one-man rapid batch injection operation can be achieved. The problem that an existing intensive farm needs frequent treatment and immunization is solved, and the effects of being easy to operate, saving time and labor, improving operation efficiency and reducing labor cost are achieved.

The invention discloses a safe pressure reducer. The safe pressure reducer comprises an air bottle; a pressure reducer is connected with the air bottle; an exhaust joint is arranged on the air bottle; an intake joint is arranged on the pressure reducer; a handle is arranged on the air bottle; a gear is fixedly connected below the handle; a rack is matched with the gear; bulbs are arranged at the end parts of the rack; the intake joint of the pressure reducer is provided with a guide rail; a stand column is arranged on the guide rail; two universal joint cup bowls are arranged at the end parts of the stand column; and the bulbs are wrapped in the universal joint cup bowls. The safe pressure reducer has the following beneficial effects: the precise control of the rotating speed of the air bottle is realized by using matching between the gear and the rack; the safety of the whole device is greatly improved; and the service life of the whole device is prolonged.