17results 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 disclosure provides a vehicle driving torque control method and system, a computer-readable storage medium, a computer device, and a vehicle. The method comprises: determining a total driving torque according to a stroke that a driver steps on an accelerator pedal, and dividing the total driving torque into a theoretical front-axle driving torque and a theoretical rear-axle driving torque; acquiring a minimum torque in a first torque set as a maximum front-axle driving torque, and acquiring a minimum torque in a second torque set as a maximum rear-axle driving torque; and limiting the theoretical front-axle driving torque according to the maximum front-axle driving torque, and limiting the theoretical rear-axle driving torque according to the maximum rear-axle driving torque, to obtain a final output actual front-axle driving torque and a final output actual rear-axle driving torque.

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 present invention discloses a high-power hydraulic starting motor device, including: a hydraulic motor, a conversion shaft assembly, a buffer spring, a torque clutch, a transmission shaft assembly, a gear, a connecting plate and an SAE flange shield, wherein the connecting plate is open at both ends and hollow inside, one end of the connecting plate is fixedly connected to the hydraulic motor, and the other end of the connecting plate is fixedly connected to the SAE flange shield, and the conversion shaft assembly, the buffer spring, the torque clutch and the transmission shaft assembly are sequentially combined and arranged in the connecting plate and the SAE flange shield. The present invention provides an axial buffer spring between the conversion shaft and the transmission shaft, which plays an axial buffering role through the expansion and contraction of the buffer spring; and the torque clutch working in a semi-clutch state plays a radial buffering role; a bearing is provided on the conversion shaft, which is used together with a needle bearing to ensure coaxiality; the bearing divides the internal cavity of the connecting plate into a first cavity and a second cavity, and plays a secondary seal for the hydraulic motor.

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 invention relates to the technical field of centrifugal casting, in particular to a high-temperature alloy part centrifugal casting device which comprises a base and a movable seat, a centrifugal barrel is rotatably arranged on the base, the movable seat is movably arranged on the base, and a feeding hopper is arranged on the movable seat; the connecting pipe is fixedly arranged at the bottom of the feeding hopper and used for conveying metal liquid; the guide pipe is fixedly connected with the bottom end of the connecting pipe and used for conveying the metal liquid into the centrifugal cylinder; according to the centrifugal casting device for the high-temperature alloy part, high-temperature gas is utilized to spray metal liquid through the spray head, the temperature of the metal liquid can be kept, the metal liquid is prevented from being solidified too early, the fluidity of the metal liquid can be enhanced, a complex structure in a mold can be better filled, the sprayed metal liquid has a certain initial speed, and the casting quality is improved. The speed difference between the metal liquid and the molding sand layer can be reduced, and damage to the molding sand layer caused by metal scouring is effectively avoided.

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 invention discloses a trailer brake control method and device based on a semitrailer and a trailer. The method comprises the steps that type information, operation state information and attitude information of the semitrailer are obtained, and the operation state information at least comprises steering angle information, vehicle speed information and retarder torque information; based on the type information, the operation state information and the attitude information, whether the semitrailer has the folding dynamic state of the semitrailer or not is judged; in a case where it is determined that the semitrailer has the folding dynamics of the trailer, a brake control strategy is generated for controlling the trailer valve to brake the trailer of the semitrailer. The technical problem that the trailer and the main vehicle are folded due to the fact that the trailer pushes the main vehicle is solved.

The invention provides an intelligent speed regulation system and method for entering and exiting a ramp, a computer storage medium and a vehicle. Comprising an acquisition module used for acquiring vehicle and road parameters, a ramp recommended speed calculation module used for calculating a ramp recommended speed, a first acceleration module used for obtaining a first acceleration recommended speed value based on the vehicle and road parameters and the ramp recommended speed, and a second acceleration module used for obtaining a second acceleration recommended speed value based on the first acceleration recommended speed value. The second acceleration module is used for obtaining a second acceleration recommended speed value based on the vehicle and road surface parameters and the first acceleration recommended speed value; and the control module is used for controlling the vehicle to accelerate. According to the method, a more reasonable speed regulation scheme is provided for a driver according to the road condition of the actual ramp, and in the process of driving out of the ramp, the vehicle is accelerated quickly for the first time, so that the speed difference between the vehicle and other vehicles is reduced, the safety of the vehicle is ensured, and the risk of traffic accidents is reduced; and carrying out second acceleration and freely driving by the driver.

The present application provides a method, device, vehicle and storage medium for controlling mode switching, which is applied to the field of vehicle technology, and includes: when it is determined that the vehicle needs to switch from a pure electric rear-drive mode to a pure electric four-wheel drive mode, controlling the second input shaft to engage in an even gear; if it is detected that the gear position of the second input shaft is neutral, determining that the even gear on the second input shaft is unavailable; when it is determined that the even gear on the second input shaft is unavailable, controlling the first input shaft to engage in an odd gear, controlling the second clutch and the first clutch to close, so that the vehicle switches to a pure electric four-wheel drive mode; when it is determined that the vehicle switches to a pure electric four-wheel drive mode, controlling the front drive motor of the vehicle to output torque to the front wheels of the vehicle through the second clutch, the first clutch and the first input shaft. This method can ensure that the vehicle can switch from a pure electric rear-drive mode to a pure electric four-wheel drive mode when the even gear is unavailable, thereby ensuring the power performance of the vehicle.

The utility model relates to the technical field of mine sewage treatment, in particular to an ultrafiltration device of a mine sewage treatment station. According to the technical scheme, the ultra-filtration device of the mine sewage treatment station comprises a shell, a barrel body, an ultra-filtration element and a water distributor, a water outlet hole is formed in the outer side of the barrel body, the shell is arranged at the position, below the water outlet hole, of the outer side of the barrel body, a temporary storage cavity and a containing cavity are formed in the shell, the ultra-filtration element is placed in the containing cavity, and the water distributor is arranged on the barrel body. The bottom end of the shell is provided with a water outlet pipe, the bottom end of the barrel body is connected with a water inlet pipe, the water inlet pipe is rotatably provided with a water distributor through a rotary seal, the water distributor is located in the barrel body, the periphery of the water distributor is provided with water outlets, and the water outlets are formed in the tangential direction of the water distributor. The mine sewage treatment device has the characteristics of high efficiency, uniformity and convenience when being used for treating mine sewage, and provides a reliable water treatment solution for a mine environment.

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.

The present invention belongs to the technical field of calcium phosphate preparation, in particular to a hydroxy calcium phosphate synthesis granulation device and process, comprising a reactor and a reactor cover, a heating component is arranged outside the reactor, a reaction chamber is arranged inside the reactor, a stirring component and a dosing component are arranged inside the reaction chamber, the dosing component comprises a second shaft sleeve and a rotating disk which are arranged on a stirring shaft and rotate synchronously and can move vertically, a fixed cover plate is slidably connected to the upper part of the second shaft sleeve and the rotating disk, the fixed cover plate is connected to the reactor cover through a telescopic rod, the fixed cover plate, the second shaft sleeve and the rotating disk form an annular dosing chamber, a drug solution is pumped into the dosing chamber through a first dosing pipe, and a second dosing pipe connected to the dosing chamber is arranged on the lower side of the rotating disk. The present application can effectively utilize the heat generated by the reaction, reduce the temperature difference between the slurry at the stirring shaft and the reactor wall, so that the grains generated by the reaction have a similar growth environment in the entire axial flow circulation process.

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 relates to a self-adaptive anti-pole-climbing anti-drag stirring shaft, which is suitable for stirring a polymer solution with a pole-climbing effect and comprises a stirring auxiliary shaft and a stirring shaft, the stirring shaft is rotatably connected with the stirring auxiliary shaft through a bearing arranged at the upper part of the stirring shaft, and a shearing structure is arranged at the lower part of the stirring shaft. And a driven stirring paddle is fixed on the outer side of the lower part of the stirring countershaft. According to the utility model, direct contact between the stirring shaft rotating at a high speed and the polymer fluid in the container is avoided through the stirring countershaft, and linear polymers in the polymer fluid cannot stretch on the stirring countershaft under the condition that the paddle of the driven stirring paddle and the fluid circulation in the container keep a lower rotating speed difference and the horizontal circulation is weakened; macromolecules only show weak elasticity, so that no power is generated to generate a pole climbing effect, the power of the passive stirring paddle comes from the horizontal circulation of the fluid, and meanwhile, the anti-climbing pole reduces the work of the stirring shaft on the macromolecule fluid, so that the aims of saving energy and reducing consumption are fulfilled according to the principle.

The invention relates to the technical field of vapor compressors, in particular to an air inlet anti-surge pipe of an MVR centrifugal vapor compressor. According to the technical scheme, the MVR centrifugal vapor compressor comprises an MVR centrifugal vapor compressor body, a shell, an air inlet pipe, a surge bin and a supporting ring, the air inlet pipe is arranged at one end of the MVR centrifugal vapor compressor body, the shell is connected to the outer side of the air inlet pipe in a sleeving mode, the surge bin is arranged at the center section of the air inlet pipe, and a rotating shaft is rotationally installed in the surge bin; blades distributed in an annular array mode are arranged on the outer wall of the rotating shaft, supporting rings are arranged on the front side and the rear side of the buffering bin correspondingly, second springs distributed in an annular array mode are arranged in the supporting rings, positioning blocks are arranged at one ends of the second springs, and balls are arranged at one ends of the positioning blocks. By arranging the surge bin, the problems that the air inlet pipe of the MVR centrifugal vapor compressor body does not have the anti-surge function, air flow is unstable, impact and vibration are generated, and the equipment operation efficiency is affected are solved.

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.