12results about How to "High steering precision" patented technology

The application discloses a control method, an electronic device, a vehicle, a storage medium and a program product, and the control method is applied to a vehicle and comprises the following steps: obtaining a set turning radius input by a target object; and adjusting the rotating speed of at least one target wheel of the vehicle, so that the turning radius of the vehicle reaches the set turning radius. By obtaining the set turning radius input by the target object, and then adjusting the rotating speed of the at least one target wheel of the vehicle, so that the turning radius of the vehicle reaches the set turning radius, the effect that the vehicle can be controlled to flexibly turn at an arbitrary turning radius is achieved without adding hardware, the effect that the rotation center of the vehicle can be at a wheel, a certain point in the vehicle or a certain point outside the vehicle is realized, the control is simple and easy to realize, and problems, such as unnecessary collision or occupying too many lanes due to too large turning radius, can be avoided, the steering precision is improved, and the flexibility and maneuverability of the vehicle are improved.

This utility model provides a front suspension for racing vehicles, belonging to the field of suspension technology. The front suspension includes a rocker arm, an upper wishbone, and a lower wishbone. One end of the upper and lower wishbone is rotatably connected to the front subframe. The rocker arm is rotatably connected to the front subframe via a shock absorber. A steering pushrod is located below the rocker arm and is connected to the rocker arm via a connecting rod. The rocker arm is connected to the lower wishbone via the pushrod. This device, through the design of a multi-directional ball joint structure, enables each hinge point to have multi-dimensional swing capability, improving the device's motion adaptability during multi-state switching. When using this device, the device can match the amount of wheel bounce by controlling the travel of the shock absorber in different states: extending to the upper limit of travel when the wheel is suspended, contracting to the middle travel when fully loaded, and compressing to the lower limit of travel during extreme bounce.

The invention discloses a double-front-axle steering point position sensitivity analysis and joint optimization method and system, and relates to the technical field of steering point position optimization. Comprising the following steps: S1, acquiring data of each corner, and preprocessing the data; s2, performing frequency domain analysis on the turning angle of the front axle steering drop arm, judging the non-constant-speed disturbance intensity of a universal joint, and analyzing and removing a periodic disturbance component in the turning angle of a wheel to obtain a turning angle trend of the wheel; s3, an ideal steering relation is established, the deviation between the wheel steering angle trend and the ideal steering relation is evaluated, and the steering geometric error degree is recognized; carrying out single-axis step length adjustment on the coordinates of the key structure points, and analyzing and screening out optimized candidate positions; and S4, constructing a joint optimization target, and performing iterative updating in combination with the non-constant-speed disturbance intensity of the universal joint to obtain optimized key structure point coordinates. The problem that structure point position adjustment is misjudged due to the fact that universal joint non-constant-speed disturbance and steering geometric deviation are difficult to distinguish in the point position optimization process of the double-front-axle steering system is solved.

The utility model relates to the technical field of lifting equipment, in particular to a trolley chassis with a boom type steering structure. A trolley chassis with a boom type steering structure comprises steering wheels used for controlling and driving a trolley to move and steer, power wheels used for controlling and driving the trolley to move and brake, a frame used for installing the steering wheels, the power wheels and a control system assembly of the power wheels, and the steering wheels are controlled to swing through a swing oil cylinder and achieve steering control. The two ends of the swing oil cylinder are connected with the steering wheels on the two sides of the vehicle frame in a control mode and are synchronously controlled in a telescopic mode. The two ends of the two-way oil cylinder are connected with the steering wheels on the two sides of the frame respectively, synchronous stretching and retracting and same-angle steering of the steering wheels on the two sides are achieved through driving of the hydraulic system, the problem that steering is not synchronous due to mechanical gaps, response lag and the like in a traditional multi-motor or multi-steering-engine system is effectively solved, the advancing track of the trolley is more accurate, and the stability is higher. And the stability and the safety during steering are obviously improved.

The invention relates to the technical field of articulated vehicle steering, aims to solve the problems that an existing hydraulic steering system is high in energy consumption, low in precision, slow in response, insufficient in transverse rigidity, prone to causing vehicle body oscillation and the like, and discloses drive-by-wire electromechanical steering equipment and method for an articulated mining vehicle. The required torque is calculated by the data processing terminal and then is transmitted to the inverter through the CAN bus so as to drive the servo motor; the servo motor drives the enveloping worm through the planetary reduction gear, so that the turbine set is driven, and steering of the rear vehicle body of the hinged type mining vehicle relative to the front vehicle body of the hinged type mining vehicle is achieved. The system has the advantages of energy conservation, high efficiency, accurate response, high stability, fault redundancy capability, simplified structure and low maintenance cost, and the steering performance and reliability of the articulated mining vehicle under severe working conditions are remarkably improved.

This invention discloses a vehicle corner module device and a vehicle, relating to the field of vehicle technology. The vehicle corner module device includes: a wheel hub assembly and a steering knuckle, with the steering knuckle disposed on the wheel hub assembly; a steering assembly, including: a steering drive component and a tie rod, the tie rod being connected to the steering knuckle, the steering drive component being configured to drive the tie rod to move and drive the wheel hub assembly to steer; and a steering angle sensor, disposed on the steering knuckle. Thus, the steering of each wheel hub assembly can be driven by the corresponding steering drive component, achieving decoupling of wheel steering control, improving chassis dynamic performance, and increasing the wheel steering angle range to achieve large-angle steering. Furthermore, by placing the steering angle sensor on the steering knuckle, the steering knuckle rotation angle can be directly and in real-time acquired to directly and in real-time obtain the wheel hub assembly steering angle without complex calculations, and is unaffected by wear or deformation of components such as the tie rod, resulting in high steering accuracy and fast response speed.

The utility model provides a kind of servo steering rudder wheel, it is related to steering rudder wheel technical field, comprising: support assembly, the support assembly includes mounting plate, bottom plate and slewing bearing, the slewing bearing includes inner ring and outer ring with outer gear, the outer ring is rotatably connected with the inner ring, the outer ring of the slewing bearing is connected with the bottom plate, and the inner ring is connected with the mounting plate;Wheel structure is connected with the bottom plate.The utility model has the beneficial effects: through the vertical connection arrangement of support assembly, wheel structure and drive component, the rudder wheel rotation radius is smaller compared with traditional driving mode, while the installation height of the rudder wheel on vehicle body can be reduced;Secondly, the double-wheel layout of wheel in wheel structure and the stable connection mode of mandrel assembly ensure the stability of wheel in the process of rotation, avoid loose phenomenon, effectively prolong the service life of rudder wheel, solve the problem of poor wheel installation stability in multi-wheel rudder wheel system.

This utility model belongs to the field of agricultural machinery technology and discloses a high-performance drive front axle for high-horsepower wheeled tractors. It includes an axle housing, with a Torsen differential connected to the inner end of the central part of the axle housing. Steering knuckle assemblies are connected to both ends of the axle housing, with wheel hub assemblies connected to the outer ends of the steering knuckle assemblies. A hydraulic cylinder assembly is connected to the outer end of the central part of the axle housing, and each pair of steering knuckle assemblies is connected to the hydraulic cylinder assembly. This solution achieves a comprehensive improvement in the load-bearing capacity, torque distribution efficiency, steering accuracy, and sealing reliability of the drive front axle by integrating a Torsen differential inside the axle housing, optimizing the high-strength structural design of the axle housing and steering knuckle assemblies, using an integrated forged tie rod and an extra-large ball joint hydraulic cylinder assembly, and configuring high-temperature resistant seals at the connection points. This effectively meets the heavy-load operation requirements of high-horsepower wheeled tractors under complex working conditions, significantly extends the service life of the front axle, reduces the failure rate, and improves the stability and operating efficiency of the entire machine's power system.

This application provides a method, apparatus, and electronic device for determining steering ratio, relating to the field of vehicle technology. The method includes: acquiring the vehicle speed; if the vehicle speed is within a preset low-speed range, determining a first steering ratio linearly positively correlated with the vehicle speed based on a preset linear function; if the vehicle speed is within a preset medium-speed range, determining a second steering ratio satisfying the target yaw rate gain based on a preset target yaw rate gain and the vehicle speed; if the vehicle speed is within a preset high-speed range, determining a third steering ratio nonlinearly positively correlated with the vehicle speed based on a preset nonlinear function; wherein the nonlinear growth rate corresponding to the nonlinear function is negatively correlated with the vehicle speed. This application employs different steering ratio determination logics for different speed ranges, which is beneficial for meeting the actual steering requirements corresponding to different speed ranges.

This utility model discloses a hub motor connection flange, comprising an integrally formed stepped flange body, consisting of a disc-shaped first part and an inner convex ring-shaped second part. A polygonal shaft connection hole is provided in the center for insertion and mating with the stator shaft of the hub motor, and is secured by a locking screw to ensure high-precision circumferential positioning and prevent loosening and angular backlash. The flange body has a host connection hole and a locking hole on its side, supporting rapid assembly and maintenance. The inner convex ring has a connection island, optimizing structural strength and weight. The flange is made of aluminum alloy, titanium alloy, or magnesium alloy, combining lightweight and high strength. This solution effectively solves the problems of loose connection, inaccurate positioning, and excessive weight in existing technologies, and is suitable for scenarios with high precision and reliability requirements, such as robotic vacuum cleaners.

The utility model discloses a steering limiter, a steering system and a road marking machine, the steering limiter is connected with the steering system of the road marking machine, the steering limiter is used for limiting the rotation angle of the steering system, and the steering limiter comprises a shell, a limiting device and a driving device, the transmission shaft is movably connected with the shell in a sleeving mode in the first direction, and the transmission shaft is in transmission connection with the steering system; the limiting shaft is movably connected with the shell in a sleeving mode in the second direction, the limiting shaft is in meshing transmission with the transmission shaft, and the first direction is perpendicular to the second direction; and the limiting part is arranged on the side, in the second direction, of the shell, the limiting part is connected with the limiting shaft in a sleeving mode, and the limiting part is used for limiting the rotation angle of the limiting shaft. According to the steering limiter, the steering system and the road marking machine, the steering precision and stability of the road marking machine can be effectively improved, and the operability of technicians is synchronously improved.

The utility model relates to a kind of auxiliary positioning tool for flange valve, it includes workbench, connecting sleeve, rotary table and two groups of clamping arms, two groups of the clamping arms are on the rotary table and move towards, clamping assembly is provided on the clamping arm, the clamping assembly includes clamping block one, clamping block two and hydraulic cylinder, the clamping block one and hydraulic cylinder are all fixedly connected on the clamping arm, the output end of the hydraulic cylinder connects the clamping block two, clamping block one and hydraulic cylinder are all fixedly connected on clamping arm, the output end of hydraulic cylinder connects clamping block two, hydraulic cylinder is started and drives the clamping block two of output end to move, realize the adjustment of the distance between clamping block two and clamping block one, to adapt to the flange valve of different size length, this mode is simple in operation and higher practicality.