46results about How to "Small slip" patented technology

A louvre system is disclosed which includes a frame having spaced apart side frame members (13, 14). A plurality of louvre blades are disposed between, and mounted to the side frame members (13, 14) so as to be rotatable about an axis of rotation. One of the frame members (14) includes a drive arrangement (21) which includes a plurality of gears (28) mounted on a subframe and connected to respective louvre blades. The gears are driven by a timing belt under the drive of a manual or electric actuator, to impart synchronised movement to the louvre blades.

The invention discloses a printing head for 3D printing. The printing head comprises a machine shell, a screw extruding system, an installation seat, barrels, valve needles and spray nozzles. A drive system is arranged at one end of the machine shell. The screw extruding system is arranged in the machine shell and is composed of at least two screws which are embedded internally and externally, and at least one screw is driven by the drive system. The installation seat is mounted below the screw extruding system. One or more inner holes are distributed in the installation seat in the axial direction, and a discharge outlet is formed in the top or the side face of each inner hole. The barrels are mounted in all the inner holes of the installation seat correspondingly, the barrels extend out from one end of the installation seat, and barrel feeding openings are formed in the top ends of the barrels. Valve cavities are formed in the barrels. The valve needles penetrate through all the valve cavities of the barrels to be mounted on the installation seat, and the gaps between the valve needles and the valve cavities form discharging channels communicating with the feeding openings of the barrels. The spray nozzles are arranged at the tail ends of all the barrels. The printing head for 3D printing is light in weight, small in size, capable of achieving high printing precision and printing speed, novel in design, high in practicability and high in economic value.

An earth nail method for protecting the soft-earth slope includes measuring and drawing lines, vertically driving the anchor tubes with grouting hole into earth, grouting, vertically digging down along the internal side of each anchor tube, arranging net, spraying cement, slurry, driving earth nails in the earth, grouting, rigidly fixing the earth nails, net ribs and anchor tubes, and spraying concrete. Said steps are repeated layer by layer undtil foundation. The drain ditch is dug on the foundation.

The invention relates to a planetary rolled thread drive. Planetary roller gear drive with a spindle nut (2) that is arranged on a threaded spindle (1) and is divided into nut parts (6, 7) that can be adjusted relative to each other in the axial direction, and with a plurality of planets (3) that are arranged distributed around a periphery and are in roller engagement with the spindle nut (2) and the threaded spindle (1). An adjustment part (20) set in the axial direction against the one nut part (6) that can be adjusted in the axial direction is provided and the one nut part (6) that can be adjusted in the axial direction is arranged between this adjustment part and the other nut part (7).

A method for controlling dual clutch transmission with at least two partial drive trains, each arranged to be coupled with an engine by means of a clutch, in that, a first clutch of an actively operated partial drive train currently transmitting torque is opened, whereas a second clutch of the partial drive train not actively operated is closed in the already engaged gear and determining a reduction of a maximum possible lateral guiding force of at least one drive wheel and determining torque transmitted by the clutches, wherein, in the case of reduction of the maximally possible lateral guiding force below a default value and in the case that torque is transmitted by both clutches, the torque of one of the clutches is reduced.

A spirally-wound electrode assembly for a rechargeable lithium battery includes a positive electrode, a negative electrode and a separator between the positive electrode and the negative electrode, wherein the separator includes a porous film and an adhesive layer on at least one side of the porous film, and the adhesive layer includes a fluorine-based polymer-containing particulate and a binder. A rechargeable lithium battery includes the spirally-wound electrode assembly.

The invention discloses a control method of a frequency converter and a control device. The control method of the frequency converter comprises the following steps of when an output frequency of the frequency converter is higher than a preset minimum frequency, beginning to detect an output current of the frequency converter; if the output current of the frequency converter is detected to be greater than a preset current, beginning to carry out timekeeping; when timing time is greater than preset overcurrent delay time, reducing the output frequency of the frequency converter. The invention also provides a corresponding control device of the frequency converter. When the output current of the frequency converter is too large, the output frequency of the frequency converter is reduced to a reference frequency. A slip frequency of the frequency converter and a motor is reduced so as to decrease the output current of the frequency converter. A circuit fault phenomenon caused by an overcurrent is prevented. Therefore, shutdown times of the device because of the overcurrent can be reduced and problems of resource and time wastes caused by repeated shutdown are solved.

A paper conveyance device for a printing device is disclosed that includes a detector and first, second, and third conveyance mechanisms. The first conveyance mechanism includes a tractor that conveys continuous paper along a paper feed direction. The second conveyance mechanism is disposed between the first conveyance mechanism and a print head and includes feed and pressure rollers. The third conveyance mechanism is disposed downstream from the print head and includes feed and pressure rollers. The detector detects the paper feed distance of the first conveyance mechanism and the rotation of the feed roller of the second conveyance mechanism, and adjusts the paper feed distance of the first conveyance mechanism based on the detected paper feed distance. A paper feed distance per unit time of each of the second and third conveyance mechanisms is greater than a paper feed distance per unit time of the first conveyance mechanism.

The invention discloses a wet gas flow measurement device based on an exempted radioactive source, which is characterized in that it comprises a section of cylindrical pipe (1) and a conical throttle (2) located in and coaxially arranged with it, The conical throttle (2) comprises a head cone section (22) and a tail cone section (23) arranged on a common bottom surface, wherein the head cone section (22) faces the wetness of the cylindrical pipe (1). Air inlet, an annular gap (3) is defined between the inner wall of the cylindrical pipe (1) and the largest diameter of the conical throttle (2) for the passage of moisture; in the conical throttle (2) The largest diameter (21) of (2) is provided with an exempt-grade radioactive source block (4), which is arranged in such a way that the gamma rays emitted by it can penetrate the annular gap (3) in the radial direction to the cylindrical pipe (3). 1) External gamma ray detector (5). The present invention enables the use of exempt-grade radioactive sources, which is a revolutionary breakthrough in the field of multiphase flow metering equipment.

The invention discloses novel cylindrical electromagnetic drive equipment, which mainly comprises a metal cylinder. The novel cylindrical electromagnetic drive equipment is characterized in that: a drive shaft is arranged outside the metal cylinder; a magnetic coil winding is arranged on the drive shaft; and each group of magnetic coils corresponds to an outer magnet steel. The invention discloses the manufacturing and installation of an electromagnetic driver, realizes the normal running of the novel cylindrical electromagnetic drive equipment and fulfils the aims of improving driving efficiency, and reducing noise, abrasion and slip frequency. The cylindrical electromagnetic drive equipment has the characteristics of low cost, excellent performances and the like, improves the running efficiency of a centrifuge, reduces the noise of a production environment, and has great popularization value.

The invention discloses an engine torque control method suitable for a sliding friction fault of a clutch. When a slip fault occurs in the clutch, the slip frequency of the clutch is reduced by limiting the output torque of an engine, specifically, PI control based on the slip frequency of the clutch is added on the basis of fixed gear torque limitation, if the clutch does not slip under a feedforward limiting torque value based on a gear, the PI limiting torque does not to work, and if the clutch still slips under the feedforward limiting torque value based on the gear, the PI limiting torqueis used for continuing to reduce the limiting torque. According to the above control method, it is ensured that the slip frequency is reduced to a safe range when the slip fault occurs in the clutchin the process that a vehicle runs at the fixed gear, and the problem that the clutch possibly continue to slip in an existing method is solved; and a PI controller is adopted, the slip frequency of the clutch can be rapidly reduced after the slip fault occurs, the fault duration and adverse effects caused by the fault are reduced, and it is ensured that a transmission transmits power with the maximum capacity.

The invention relates to a rolling mill, in particular, a cold strip tandem rolling mill (1), for producing a metal strip (100), with a number of stands (220, 260; 230; 240;...; 250) arranged in a tanThe invention relates to a rolling mill, in particular, a cold strip tandem rolling mill (1), for producing a metal strip (100), with a number of stands (220, 260; 230; 240;...; 250) arranged in a tandem path (20), wherein, in a direction of production (P) of the metal strip (100), a first stand (220) is designed as driving stand (220, 260) and serves as inlet for a section (25) of the tandem pathdem path (20), wherein, in a direction of production (P) of the metal strip (100), a first stand (220) is designed as driving stand (220, 260) and serves as inlet for a section (25) of the tandem path (20), in which a primary thickness reduction of the metal strip (100) occurs, and by corresponding control of the driving stand (220, 260), an increase in the mechanical inlet tension of the metal st(20), in which a primary thickness reduction of the metal strip (100) occurs, and by corresponding control of the driving stand (220, 260), an increase in the mechanical inlet tension of the metal strip (100) can be achieved. The invention further relates to a method for controlling a rolling mill, in particular, a cold strip tandem rolling mill (1), for producing a metal strip (100), wherein, inrip (100) can be achieved. The invention further relates to a method for controlling a rolling mill, in particular, a cold strip tandem rolling mill (1), for producing a metal strip (100), wherein, in a production direction (P) of the metal strip (100), a first stand (220) is controlled as driving stand (220, 260), said driving stand (220, 260) achieving a significant increase in the mechanical ina production direction (P) of the metal strip (100), a first stand (220) is controlled as driving stand (220, 260), said driving stand (220, 260) achieving a significant increase in the mechanical inlet tension on the metal strip (100) and a significant thickness reduction of the metal strip (100).let tension on the metal strip (100) and a significant thickness reduction of the metal strip (100).

The invention discloses a wet double-clutch automatic transmission torque following control method. The wet double-clutch automatic transmission torque following control method comprises the steps that initialization control is started when the following conditions are simultaneously satisfied, wherein the conditions include the non-creep state, the non-starting state, the non-shifting state, not-opening of a clutch and the non-fault mode; it is determined whether any one of the following conditions is satisfied, wherein the conditions include the creep state, the starting state, the shiftingstate, clutch opening, entering of the fault mode; if any one of the following conditions is not satisfied, it is determined whether the following torque is not equal to the corrected partial torque of a previous sample or not; if the following torque is not equal to the corrected partial torque of the previous sample, skip control is started; and if the following torque is equal to the correctedpartial torque of the previous sample, maintenance control is started. According to the wet double-clutch automatic transmission torque following control method, through torque following control, according to the actual running condition of a whole vehicle, torque precise control is achieved, and therefore the driving property of the whole vehicle is improved; if the slip frequency is too large, the pressure of the clutch is quickly increased to reduce the slip frequency as quickly as possible, and if the slip frequency is very small, the pressure can be appropriately reduced, and the drivingperformance of the whole vehicle is improved.