7results about How to "Reduce speed difference" patented technology

This invention provides a device and method for simulating sediment resuspension under hydrodynamic action, relating to the field of sediment simulation. Addressing the problem that current wave-generating simulations of dynamic disturbances easily lead to the breakage of suspended particles, this invention simulates the action of water flow in a natural river by installing baffles within the water tank cavity to form multiple flow channels. The segmented circulation of water flow simulates the sediment resuspension process. When the grid blades agitate the water, the grid structure divides the water flow into multiple smaller streams, thus dispersing the force of the water flow. The originally concentrated impact force is dispersed to various parts of the grid, and when it is transmitted to the suspended particles, the magnitude and concentration of the force are significantly reduced, preventing the particles from breaking due to excessive external force.

The application discloses a transmission knock noise suppression method and device of a hybrid power system. The method comprises the following steps: obtaining an engine torque of an engine in the hybrid power system; determining a current operating condition of the hybrid power system under the engine torque; determining whether the current operating condition belongs to a predetermined operating condition to obtain an operating condition determination result; in the case that the operating condition determination result is that the current operating condition belongs to the predetermined operating condition, determining a rotational speed difference of a clutch; and suppressing the knock noise of the transmission by controlling the rotational speed difference of the clutch within a predetermined range. The application solves the technical problem that the knock noise of the transmission caused by the large torsional vibration transmitted from the engine to the transmission cannot be effectively suppressed in the prior art.

The utility model belongs to the technical field of kitchen appliances, and discloses a food processor which comprises a stirring cup and a cutter assembly detachably installed in the stirring cup, the cutter assembly comprises an upper shell, a lower shell and a shaft sleeve, the upper shell and the lower shell define an installation cavity, the shaft sleeve is located in the installation cavity, and a bearing is installed in the shaft sleeve. The cutter assembly further comprises a transmission shaft, a metal magnetic isolation disc fixed to the lower end of the transmission shaft into a whole and a permanent magnet fixed to the lower surface of the magnetic isolation disc, the permanent magnet is located in the installation cavity, and the transmission shaft is provided with an upper limiting part and a lower limiting part in a protruding mode and installed on the bearing from bottom to top in a penetrating mode. The upper limiting part detachably sleeves the periphery of the transmission shaft and abuts against the upper end of the bearing, and the upper end of the transmission shaft extends out of the upper shell and is connected with a blade. The working stability of the transmission shaft is improved, noise is reduced, the cutter assembly structure is simplified, the acting force between the driving magnetic disc and the permanent magnet is enhanced, synchronous rotation of the driven magnetic disc and the driving magnetic disc is achieved, and the transmission efficiency is improved.

The application discloses a trailer brake control method and device based on a semitrailer and the semitrailer. The method comprises the following steps: acquiring type information, running state information and posture information of the semitrailer, wherein the running state information at least comprises steering angle information, vehicle speed information and retarder torque information; judging whether the semitrailer has a folding dynamic of the trailer based on the type information, the running state information and the posture information; and generating a brake control strategy for controlling the trailer valve to brake the trailer of the semitrailer in the case that it is determined that the semitrailer has the folding dynamic of the trailer. The application solves the technical problem of folding of the trailer and the main vehicle caused by the trailer pushing the main vehicle.

The application relates to the electric drive technology field of new energy vehicles, in particular to a differential protection method and device, an electric vehicle and a storage medium, wherein the method comprises the following steps: acquiring the output torque of a driving motor in the electric vehicle; if the output torque is in a preset torque interval, activating the differential protection function of the differential and / or the gravity control system of the electric vehicle, wherein the execution priorities of the gravity control system and the differential protection function are different; reducing the output torque of the driving motor by using the differential protection function and / or the gravity control system, so as to reduce the speed difference between the half shafts in the differential, until the speed difference is less than a first preset value. Thus, the problem that the differential is prone to failure and the vehicle is prone to failure due to long-time wear and tear of the differential exceeding the design boundary in the prior art is solved, the service life of the electric vehicle is reduced, and the user experience is poor.

This application discloses a vibration synchronization adjustment transmission mechanism for a biaxial elliptical screen, relating to the field of vibrating screening machine technology. The application includes a support frame, on which a screen box is connected via a side spring damping device. Two vibrating shafts are rotatably mounted on the screen box. It also includes a synchronization transmission mechanism comprising two rotating shafts coaxially mounted on the support frame. This application utilizes two rotatable linkage shafts and two rotating shafts. A motor drives the two rotating shafts to rotate synchronously in opposite directions. The two rotating shafts, through the cooperation of a first pulley, a second pulley, and a transmission belt, first drive the two linkage shafts to rotate synchronously in opposite directions. The two linkage shafts then drive the two vibrating shafts to rotate synchronously in opposite directions via a flexible rubber belt connection. This not only reduces the speed difference between the two vibrating shafts but also prevents the vibration stress generated by the rotation of the two vibrating shafts from being transmitted and affecting the motor, thus making the transmission smoother, ensuring a stable vibration trajectory, and ensuring screening efficiency.

The utility model discloses a tension control device of a carbon fiber spreading and warping machine, which comprises a spool, a raddle, a shaking device, a traction device and a winding device, a first roller and a second roller are arranged between the raddle and the shaking device, the first roller and the second roller are vertically arranged at intervals, the first roller is driven by a third motor, and the second roller is driven by a fourth motor. The second roller is driven by a fourth motor, a first guide roller is arranged between the shaking device and the traction device, a first pressure sensor is installed at one end or two ends of the first guide roller, a second guide roller is arranged between the traction device and the winding device, and a second pressure sensor is installed at one end or two ends of the second guide roller. The first roller, the second roller, the first guide roller and the second guide roller are arranged in the width direction of the carbon fiber yarn, and the third motor, the fourth motor, the first pressure sensor and the second pressure sensor are connected with a central processing unit. The constant tension control device ensures that the tension of the carbon fiber yarns on the wind-up roller is constant and uniform, and realizes constant tension control of the yarns.