39results about How to "Change running speed" patented technology

To provide a semiconductor device that has a novel structure and achieves a higher degree of convenience, the semiconductor device is configured to include a memory cell that stores binary data or multilevel data, and a reading circuit that reads the data stored in the memory cell and transfers the data to the outside. The reading circuit includes a first reading circuit for reading binary data and a second reading circuit for reading multilevel data.

The invention relates to an automatic-rise-fall computer display device bracket which comprises a support unit, a lifting device, a control unit and a power supply unit, wherein the lifting device is arranged in the support unit; the control unit comprises a position detection circuit and a singlechip for controlling the lifting device to rise and fall; the power supply unit is connected with the control unit and lifting device; the position detection circuit comprises a U-shaped resistor and two position sensing elastic needles; the U-shaped resistor is fixed to the support unit; the position sensing elastic needles are fixed to the lifting device; and the two position sensing elastic needles communicate with each other and are movably connected with both ends of the U-shaped resistor. By adopting the singlechip and position detection circuit to control the rise and fall process, the rise and fall distance can be accurately controlled, and the rise and fall stop time can be accurately controlled; and the rise or fall speed can be accurately changed by changing the transmission ratio of the worm and gear.

The invention provides an infrared servo bridge type cutter control system. The system comprises a main control circuit, a power control circuit and a PLC control circuit; the main control circuit is connected with the power control circuit; the power control circuit is connected with the PLC control circuit; the main control circuit comprises a power supply circuit which is of a three-phase four-wire system power supply mode, a main power supply switch, an ampere meter, a voltage meter and a motor driving device; the main power supply switch, the ampere meter, the voltage meter and the motor driving device are arranged on the power supply circuit; the main power supply switch is arranged at the input end of the power supply circuit; two ends of the voltage meter are respectively connected to two of three phase lines, and the rest phase line is connected in series with the ampere meter; the motor driving device comprises a main cutter circuit, a servo motor circuit and an oil pump motor circuit. According to the system, the PLC controller and the servo drive are adopted to control a travelling motor and a slicing motor, so that the control precision is high, the electricity energy loss is reduced, and the production efficiency is increased; the utilization efficiency of a water source can be improved through a water valve switch.

The invention relates to an automatic carbon cloth tension controlling device in a carbon cloth low-temperature carbide furnace system used by a fuel battery in the automatic control field. The device comprises a potentiometer, an inlet frequency variation controller, an inlet driving roller, a tension controller, a tension roller, an outlet frequency variation controller and an outlet driving roller. The inlet driving roller is positioned in front of a low-temperature carbide furnace; the inlet frequency variation controller, the potentiometer and the inlet driving roller form a closed loop feedback chain; the tension roller and the outlet driving roller are sequentially positioned behind the low-temperature carbide furnace; the tension controller is respectively connected with the tension roller and the outlet frequency variation controller; and the outlet frequency variation controller is connected with the outlet driving roller to output the carbon cloth. A tension sensor in the invention measures and obtains an instant tension value of the carbon cloth and is controlled by a feedback closed loop so that the carbon cloth tension control achieves high accuracy, satisfactory stability and fast response. Manual adjustment of the potentiometer can stabilize the invention in a new and balanced feedback loop so as to perform fine adjustment to the carbon cloth of different materials and to facilitate technical operations.

The invention discloses a wood cutting machine with the adjustable cutting thickness. The wood cutting machine with the adjustable cutting thickness includes a machine body, one end of the machine body is provided with a feeding port, the other end of the machine body is provided with a discharge port, and the bottom end of the machine body is provided with a plurality of uniformly-distributed landing legs. The wood cutting machine is characterized in that one side of the machine body is provided with a clutch mechanism having two-gear rotating speeds, one end of the clutch mechanism is provided with a transport mechanism for transporting wood, one side of the machine body is provided with a power mechanism, the power mechanism is provided with a plurality of uniformly-distributed cuttingmechanisms capable of moving, and the two ends of the machine body are each provided with a fixing mechanism for fixing the wood. The wood cutting machine has the beneficial effects that the wood withthe larger diameter can be cut, meanwhile, the wood cutting thickness can be adjusted according to the processing requirements, the adjustment method is simple, the wood diameter application scope ofthe wood cutting machine is increased, and the practicability of the wood cutting machine is improved.

The invention discloses an asphalt and recycled concrete pavement testing apparatus which comprises an asphalt and recycled concrete pavement module, a loading traction device, a dip angle adjusting device, a measurement device and a rainwater device. The asphalt and recycled concrete pavement module includes an asphalt and recycled concrete layer, a recycled concrete type rubble layer, a cushion layer and an earth filling layer which are arranged from top to bottom. The loading traction device comprise a roller, a weight-bearing supporting plate, a connecting piece, a traction rope, an anti-collision plate, a guiding wheel and a variable-frequency and variable-speed motor. The dip angle adjusting device comprises a scale rotating wheel, an extensible support and a working platform. The measurement device comprises a thermometer, a flowmeter, a pressure meter, a horizontal displacement meter, a vertical displacement meter, a shake sensor and a rate meter. The rainwater device comprises a water guiding frame and a water distributor. The water distributor is arranged on the earth filling layer, and the earth filling layer is arranged on the working platform. Different situations are systematically researched, a corresponding relation between the situations and pressure, displacement and shake is established, technical support is provided for road project application of building waste, and meanwhile the utilization rate of the testing apparatus is improved.

The present invention relates to a wire traveling control method. A wire is wrapped on the multislot roller between a supply roller and a recovery roller, at start of operation, the three rollers are normally rotated and a wire is traveled at a low speed. A correlative speed ratio is calculated at a time when traveling of the wire is stabilized. The respective driving motors are simultaneously started at a high speed on the basis of the speed ratio. Next, the speed ratio of the supply roller driving motor and the recovery roller driving motor with respect to the multislot roller driving motor at the high speed traveling is stored. The respective driving motors are controlled to reversely rotate with the stored speed ratio at returning traveling of the wire, which is repeated at reciprocating traveling of the wire thereafter, thereby to realize the control to a metal wire. The structure of the application device of the present invention is simple and wire additional tension is steady.

The invention discloses a self-adaptive control incremental forming method. According to the method, machining parameters are changed according to local strain, change of the machining parameters comprises the steps of changing the diameter of a tool head, the running speed of the tool head and the layer-by-layer feeding amount in real time, the forming precision and forming quality of machined parts are improved within the shortest machining time, and the flexibility and operability of an incremental forming machining process are fully utilized; and according to the method, different self-adaptive incremental forming machining schemes are formulated by referring to different forming materials, and basic parameters of the schemes comprise the tensile strength and the shear strength of thematerials.

The invention discloses a novel traction power supply system based on a rail traffic sand table model. The two traction power supply modes of an overhead contact line and a contact rail are adopted, wherein according to the power supply mode of the overhead contact line, a semi-compensation suspending device and a full-compensation suspending device are adopted, the combination of soft and hard crossing is adopted by a station, soft crossing is adopted by a vehicle section, the line is provided with equipment like a segmented insulator, an anchoring section joint, a center anchoring section, afeeder line, an electric connector and a return line and various lines, and the signal marks are complete, and are completely identical to those in the actual operating situations. The basic principle and the working operating scene of a rail traffic or railway power supply system can be truly restored to achieve the purpose of educating and teaching students of relevant universities and majors of railway and rail traffic, the purpose of training staff by rail traffic and railway construction and operation units can also be achieved, and the original intention of the design of a sand table istruly embodied.

The invention relates to a door without a sill. The door comprises an outer door panel and an inner door panel. The bottom end of the door is installed on the ground or the floor surface, and the topend is suspended on a horizontal frame. Fixed guide wheels are arranged on the ground or the floor surface. A guide wheel mounting plate with moving guide wheels is disposed on the outer door panel. An outer door track and an inner door track are disposed on the horizontal frame, and the outer door panel and the inner door panel respectively slide on the outer door track and the inner door track through a door panel hanging pulley block. An inner driving motor, a driving wheel assembly, an inner door belt pulley, an outer door belt pulley, an inner belt and an outer belt are also disposed on the horizontal frame. An inner lower belt connecting frame and an outer lower belt connecting frame are respectively disposed on down sections of the inner belt and the outer belt and connected with the door panel hanging pulley block. A stereo garage using the door is further disclosed. The door has the advantages of door opening and closing quick response, high operation efficiency and low maintenance cost.

The invention relates to a cigarette bar conveying speed adjusting device and an adjusting method thereof. The cigarette bar conveying speed adjusting device comprises a motor, a power source and a cloth belt wheel used for conveying cigarette bars. The power source is connected with the motor through a wireless power supply module or a wired electric connector, and the motor can drive the cloth belt wheel to change the rotating speed through a connecting device. The device has the advantages that in the cigarette bar moving process, a cigarette bar can deviate front and back possibly, patterns on the cigarette can not be located at the set position, at the moment, the motor is started to change the running speed of the cloth belt wheel, and the patterns of the cigarette are adjusted to the set position.

The invention discloses a drying and ventilating device for an ocean engineering living cabin, and belongs to the technical field of ocean engineering. The drying and ventilating device for the ocean engineering living cabin comprises a fixing device, an air inducing device, a blocking device, a conversion device, a drying device and a sound reducing device, the fixing device is vertically arranged on a living cabin, and the air inducing device is horizontally arranged on the side wall of the fixing device; the blocking device is horizontally arranged on the side wall of the fixing device, the conversion device is horizontally arranged on the inner side wall of the fixing device, the drying device is vertically arranged on the side wall of the fixing device, and the sound reduction device is vertically arranged on the inner side wall of the fixing device. The air speed entering the living cabin is controlled through the blocking device, and air entering the living cabin is dried through the drying device.

The invention discloses a multifunctional automatic sesame seed cake roasting furnace, and the stove has the characteristics of heat-insulating protection, semi-enclosed furnace chamber, constant furnace temperature, continuous operation without manual intervention, environmental protection, and energy and labor saving, thus the roasted sesame seed cake is steady in quality, excellent in uniformity and high in efficiency. According to specific conditions of each user, the heater power and the conveyer belt running speed are changed, and the production capacity and the efficiency can be also changed. The multifunctional automatic sesame seed cake roasting furnace is used to roast different-type and different-taste sesame seed cakes by different-scale sesame seed cake roasting merchants. The roasting furnace is a novel roasting machine which isn't specially nursed by a person, the sesame seed cake no less than that roasted by the traditional way can be roasted by the furnace, and the roasting furnace has the advantages of energy saving, high efficiency, quickness, cleanness and easy operation. The roasting furnace can roast large batches of sesame seed cakes by one person, and the roasted sesame seed cakes are very steady in color.