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 provides a device for carrying out a pigging dynamic response experiment of a natural gas pipeline suspension cable across a structure, wherein a transparent tempered glass tube and a seamless steel tube are connected through a flange, and a main cable is connected to a tower as a main load-bearing component. The fixed bracket can fix the seamless steel pipe and place it on the flat plate. The rotation of the cam under the flat plate can drive the connecting rod to move up and down, which makes the flat plate move up and down, so as to realize the vertical vibration of the pipe. The signal test device acceleration sensor and displacement sensor can be installed in the corresponding position of the seamless steel pipe according to the test requirements. The device is mainly designed to study the dynamic response of the natural gas pipeline suspension cable spanning structure and its influence on the pigging two-phase flow, and can obtain the vibration acceleration and vibration displacement of the pipeline suspension cable spanning structure under different pigging conditions etc., and simulate the influence of the pipeline on the pigging two-phase flow pattern under different vibration conditions.

The invention relates to the technical field of machine tool processing, and discloses a machine tool fixture structure that can adjust the feeding speed, including a shell, the right side of the shell is movably connected with a clamp body, and the top of the clamp body is fixedly connected with a gear The inside of the housing is provided with a feeding track, the top of the feeding track is provided with a pulley, the back side of the pulley is keyed to a power column, and the top of the power column is provided with a rotating shaft, and the rotating shaft The outer side of the rotating shaft is movably connected with a running wheel, the right side of the rotating shaft is provided with a transmission shaft, the outside of the transmission shaft is movably connected with a bracket, the back side of the transmission shaft is fixedly connected with a handle, and the upper side of the rotating wheel engages There is a transmission column, the back side key of the transmission column is connected with a motor, and the front key of the transmission column is connected with a gear. By turning the handle to change the position of the bracket, the bracket drives the runner to move left and right, and by adjusting the position of the runner on the power column and transmission column on the upper and lower sides, the effect of changing the running speed of the feeding track is achieved.

The invention relates to the technical field of oil extraction machinery, in particular to an automatic speed-changing wide-swing-angle oil pumping machine. The automatic speed-changing wide-swing-angle oil pumping machine comprises an electric motor, a speed changing mechanism, a swing arm support, a swing arm arranged on the swing arm support, a support provided with a fixed pulley and a wellhead oil pumping device, wherein the speed changing mechanism is connected with a driving crankshaft wheel, the driving crankshaft wheel is meshed with a driven crankshaft wheel, the driving crankshaft wheel is connected with a connecting piece through a bearing, one end of the connecting piece is connected with the driven crankshaft wheel, the other end of the connecting piece is connected with the swing arm through a connecting rod, a sliding chute is arranged on the connecting piece of which one end is connected with the driven crankshaft wheel, and a bearing on the driven crankshaft wheel is sleeved in the sliding chute. The automatic speed-changing wide-swing-angle oil pumping machine disclosed by the invention has the advantages that when the two crankshaft wheels are in rotation, since the position of the bearing of a driven pulley is changed, the position of the connecting piece can be also correspondingly changed, a motion trail of the connecting rod is affected by the motion of the connecting piece, the speed of the wellhead oil pumping device in the up-stroke is higher than that in the down-stroke, the oil leakage problem existing in an oil pumping process is avoided, and the oil pumping efficiency is increased.

The invention discloses a symmetrical permanent-magnet linear synchronous motor. The motor comprises a rotor and a plurality of stator guide rails symmetrically arranged on both sides of the rotor, wherein the plurality of stator guide rails forms a movement track where the rotor moves; both sides of the bottom of the rotor are symmetrically provided with three groups of array permanent magnets respectively, each stator guide rail includes an U-shaped structure, and open ends of the U-shaped structures of the stator guide rails on both sides are oppositely arranged; the upper and lower positions of the open ends of the U-shaped structures are respectively fixed with a traction force coil, and a suspension force coil is fixedly installed inside the bottom of the U-shaped structure; the suspension force coil inside the bottom of the U-shaped structure interacts with the array permanent magnet at the corresponding position of the bottom of the rotor, and the traction force for upwardly suspending the rotor and the normal force are simultaneously generated; the suspension force coils on the stator guide rails symmetrically arranged on two sides of the rotor interact with the normal force generated by the array permanent magnet, so that the rotor of the linear motor always moves at the center of the guide rail.

The invention discloses a special crane for production of an aluminum profile. The special crane comprises a main lifting machine, a bridge frame, a lifting frame, a sliding trolley, a balancing weight and a cab, wherein the main lifting machine is fixed on main beams of the bridge frame via a base; the bridge frame is formed by means of connecting two end beams and two main beams via bolts; the lifting frame is connected with the main beams of the bridge frame via bolts; the sliding trolley is arranged on a vertical fixing track of the lifting frame and is connected with one end of a lifting chain; the balancing weight is connected with the sliding trolley via the lifting chain; and the cab is fixed on the lifting frame at one end of the crane. In actual work, since the sliding trolley is provided with a hook and a lug and the hook has a certain movement range, the aluminum profile can be drained rapidly, the work time is saved and the production efficiency is enhanced; and meanwhile, the balancing weight connected with the sliding trolley is capable of lowering the temperature of the main lifting machine in movement, and the actual work requirement of a factory is satisfied.

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 is applicable to the field of financial devices, in particular to a control method and system for a deposit device. The control method for the deposit device comprises the steps of judging whether or not a currency note rejecting rate is greater than a preset threshold through detecting the currency note rejecting rate in a preset period, and enabling the system to determine whether or not a current financial device is running normally; if the currency note rejecting rate is greater than the preset threshold, changing the running speed of the physical component of the deposit device, and / or changing the registration time of a virtual sensor so as to make the system have adequate time to judge and allocate currency notes and improve the accuracy of currency note detection.