8results about How to "Reduce mechanical friction" patented technology

The application discloses an active unloading type liquid static pressure spindle and relates to the technical field of liquid static pressure spindles.The active unloading type liquid static pressure spindle comprises a spindle, a tray is fixedly arranged at the upper end of the spindle, a conical roller bearing is fixedly arranged at the lower part of the spindle, a radial bearing is fixedly arranged between the tray and the conical roller bearing on the spindle, an inner shell is sleeved outside the radial bearing and the conical roller bearing, a ring-shaped groove is oppositely formed in the middle of the upper and lower end faces of the inner shell, and an upper cover plate and a lower cover plate are respectively fixedly installed in the ring-shaped groove.The radial bearing limits the spindle in the radial direction, the conical roller bearing limits the spindle in the radial direction and the axial direction, the spindle is prevented from being displaced in the axial direction and the radial direction during operation, the transmission efficiency of the spindle and the stability of operation are improved, the machining precision of the machined objects on the tray is prevented from being affected, the appearance of defective products caused by precision is reduced, and the machining quality is improved.

The application provides a wire SI performance test board for rapid docking, comprising a test mainboard, a plurality of test output interfaces are arranged on the front surface of the test mainboard, a first SMA interface is arranged on the upper side of the test output interface, a second SMA interface is arranged on the left side of the test output interface, a test input interface is arranged on the back surface of the test mainboard, the test input interface is provided with a first magnetic attraction assembly, the test mainboard further comprises a test input connector, the test input connector is provided with a second magnetic attraction assembly, one end of the test input connector is rapidly docked with the test input interface through the second magnetic attraction assembly and the first magnetic attraction assembly, and the other end of the test input connector is provided with a wire docking interface. The application can significantly improve the wire connection / detaching efficiency, is simple and reliable to operate, reduces interface abrasion, and has good adaptability.

The utility model discloses a millet harvesting thresher, including mobile car, be provided with the thresher subassembly on the mobile car, the thresher subassembly includes thresher cylinder, second motor, driving wheel, driven wheel and transmission belt, the thresher cylinder sets up on the mobile car, second motor fixed mounting is on the mobile car, the driving wheel is connected in the output of second motor, the driven wheel rotatoryly connects on the thresher cylinder, transmission belt transmission is connected on the driving wheel and driven wheel, one end of mobile car sets up in the filter component, the filter component includes fixed frame, mobile frame and filter plate, the fixed frame installs on the mobile car, mobile frame slidingly connects on the fixed frame, the filter plate installs on the mobile frame, to solve the operation of the thresher process in the background art not enough convenient technical problem.

The application discloses an AMT economic coasting control method and system, and relates to the technical field of vehicle transmission control, which comprises the following steps: obtaining vehicle operating state parameters to determine coasting entry conditions, and outputting an economic coasting condition satisfaction symbol when all the conditions are satisfied; obtaining the operating state of a mechanical automatic transmission, determining whether the state maintenance calibration condition is satisfied, and executing delay control, and activating the economic coasting state when the target delay time is reached; executing the neutral coasting process according to the operating state of the transmission, completing the decoupling of the transmission system, and entering the economic coasting; monitoring the exit trigger condition in the coasting period, and canceling the state when the condition is satisfied, calculating the target combination gear position, and restoring the on-gear operating state. The application prevents high-frequency switching of the system through multi-dimensional determination and delay mechanism, applies time alignment and speed regulation to reduce mechanical resistance during decoupling, and calculates the combination gear position based on the reference vehicle speed and synchronizes the speed during exit, so that the longitudinal impact of the vehicle during the recombination of the clutch is reduced.

The utility model relates to the technical field of display equipment, and discloses a magnetic suspension type lifting display stand which comprises a display box, the inner side of the display box is fixedly connected with a fixing disc, the bottom of the fixing disc is fixedly connected with a servo motor, the top of the fixing disc is fixedly connected with a connecting rod, and the connecting rod is fixedly connected with a magnetic suspension device. A limiting disc is fixedly connected to the top of the connecting rod, a plurality of sliding rods are slidably connected to the outer portion of the limiting disc, a pushing disc is fixedly connected to the tops of the sliding rods, a first electromagnet is installed at the top of the pushing disc, a lead screw is installed at the top of the servo motor, and a lifting disc is in threaded connection to the outer portion of the lead screw; according to the magnetic suspension type lifting display stand, by achieving magnetic suspension lifting of the containing base and a car key, the science and technology feeling of display is enhanced, mechanical friction is reduced, and the lifting stability and speed are improved.

The invention relates to the related technical field of plastic waste recovery processing, in particular to screw extrusion equipment for recovering thermoplastic polyester processing chemical fiber materials, which comprises a screw extruder, the screw extruder comprises an operation table and an extrusion cylinder fixedly mounted on the operation table, a shaping plate is detachably mounted at an extrusion end formed by the extrusion cylinder, at least two groups of through holes are formed in the shaping plate, and an opening and closing mechanism is arranged between the shaping plate and the extrusion end; the cooling pipe is arranged on the operation table, and a moving space is formed at the front end of the cooling pipe; the cleaning mechanisms are symmetrically arranged in the moving space and are controlled by a reciprocating pushing piece mounted in the moving space; according to the device disclosed by the invention, the problems of adhesion and solidification of thermoplastic polyester which are extremely easy to generate under a shock cooling condition are effectively reduced on the premise of ensuring continuous production of the screw extruder through cooperative cooperation of intermittent switch switching and the cleaning mechanism.

The utility model discloses a traditional Chinese medicinal material active ingredient extraction device relates to traditional Chinese medicinal material extraction technical field, including broken grinder frame, broken grinding motor box, vibration frame, component extraction frame and stirring motor box, start stirring motor, heating element, temperature sensor and solenoid valve drive part, the output shaft of stirring motor drives stirring driving axle high -speed rotation through the shaft coupling, the component of first chain sprocket drive part is same with second chain sprocket drive part, the power of stirring driving axle is synchronous with stirring driven axle, and the ball bearing of driven axle is the friction resistance when reducing stirring driven axle rotation, ensures rotation steady, and the outer wall surface upside and downside of stirring driving axle and stirring driven axle are installed stirring piece, and stirring piece rotates with driven axle, simultaneously, the operator injects solvent mixture through the liquid injection pipe welding of component extraction frame left end upper side through -penetrating place, makes to medicine and solvent mixture and turns over, breaks partial concentration difference.

This invention provides a valve sleeve spiral positioning and guided electro-hydraulic proportional servo valve. The electro-hydraulic proportional servo valve includes a spool valve assembly, an oil port changing plate at the left end of the spool valve assembly, and an electric actuator at the right end of the spool valve assembly. A valve core that can slide in the axial direction is disposed inside the spool valve assembly, and the valve core portion is inserted into the electric actuator. A guide-stage valve sleeve is rotatably connected inside the electric actuator, and the guide-stage valve sleeve is connected to the valve core insertion portion. A guide structure is provided between the valve core insertion portion and the guide-stage valve sleeve. This invention successfully reduces the moment of inertia, enabling the motor to drive the valve core movement with lower torque output. Furthermore, this invention can also reduce the subsequent maintenance costs of the servo valve.