Circulating ball steering gear
133104422
Automotive circulating ball type electric steering gear
The invention discloses an automotive circulating ball type electric steering gear which comprises an input part, an output part, a shell and an assistance mechanism. The input part comprises an input shaft and a steering threaded rod connected to the output end of the input shaft. The output part comprises an output rack nut and an output shaft. The steering threaded rod is sleeved with the output rack nut to form a lead screw structure. A gear matched with the outer side of the output rack nut is arranged on the output shaft. The assistance mechanism comprises an angle sensor, a controller and an assistance driver. The angle sensor is installed on the input part and collects input information. The controller is connected with the angle sensor and the assistance driver respectively and controls the assistance driver according to the input information. The output of the assistance driver is connected with the output rack nut or the output shaft. Loads on all parts of the input part of the steering gear are greatly reduced, the sizes of all parts of the input part of the steering gear are greatly decreased, the parts are integrated with the steering gear, and the automotive circulating ball type electric steering gear is not limited by space of cabs and is high in transmission efficiency and high in adaptability.
117581355
Ball circulating type electric power steering gear for electric passenger car
A ball circulating type electric power steering gear for an electric passenger car belongs to the technical field of steering gears, and particularly relates to a ball circulating type electric power steering gear for pure electric passenger cars or large tonnage vehicles. The left side of a steering gear casing is fixedly connected with the right side of a speed reducer casing (2) the input end of a ball circulating type mechanical steering gear penetrates into a speed reducer from the right side; the output end of a steering transmission shaft (7) penetrates into the speed reducer from the left side and is mechanically connected with the input end of the ball circulating type mechanical steering gear. The ball circulating type electric power steering gear is characterized in that a sensor is a BI torque sensor capable of simultaneously outputting torque signals and turning angle signals, and is fixedly mounted at the joint of the output end of the steering transmission shaft (7) and the input end of the ball circulating type mechanical steering gear in a sleeving manner; a motor (17) is a brushless DC motor. The ball circulating type electric power steering gear has the advantages of flexible steering, light weight and portability, low energy consumption and the like, meets requirements of large tonnage vehicles, and is stable in dynamic performance.
113668071
Reliability Calculation for Steering Screw of Circulating Ball and Nut Steering Gear
Analyses the two basic failure modes of the steering screw of circulating ball and nut steering gear,and explicates the functional functions.The computing formula of failure mode related correlation coefficient and reliability is given on the basis of the theory of O.Ditlevsen.Resolves the problem of steering screw's reliability calculation in multi failure mode.
Fang Shi-jie
111954206
An analysis on the design parameters for the seetors in the circulating ball type steering gear of minicars
A theoretical analysis on the transverse pressure angle and taper angle of three kinds of toothed sector in the circulating ball type steering gear of minicars is presented. It provides a reference for the optimization design of this kind of products.
Wang Yu-mei
150077354
A 5 ton class circulating ball type dual mode electric power steering device
The invention relates to the field of electromechanical systems and motor vehicle application, and in particularly relates to a 5 ton class circulating ball type dual mode electric power steering device. The electric power steering device comprises a steering device housing assembly, an input shaft and screw assembly, a sector shaft assembly, a supporting base assembly, a turbine, a worm, an inner end cap assembly, a rotating angle and torque sensor, an outer end cap assembly, a plum connecting sleeve assembly and a motor assembly. A motor serves as a power source; power is transmitted to the input shaft and screw assembly via a worm gear and the worm, and the input shaft and screw assembly outputs torque and angle displacement via a sector shaft. The 5 ton class circulating ball type dual mode electric power steering device has two control modes of angle (position) and torque (assisting power)
116806711
Integral circulating ball type electric steering device
The utility model provides an integral circulating ball type electric steering device. A worm engaged with a worm gear is provided in the decelerator casing. The worm is connected with an electrical motor arranged on the outer side of the casing. The worm gear is provided on a rotation shaft. A torsion bar is provided between the rotation shaft and a steering screw on which a steel ball and a steering nut are provided. A sensor and the electrical motor are respectively provided on the casing. The fan shaped teeth on one side of a rocker shaft are engaged with the gear rack on the steering nut. The other end of the rocker shaft outputs the steering force through the rocker shaft. The utility model combines the electric turning booster unit with the primary structure of the circulating ball type mechanical steering device in a whole. The circulating ball type electric steering device has the advantages of convenient turning of the automobile, better control stability, safety, power saving and no pollution.
134820318
Recirculating ball gear
An endless ball gear, in particular a steering system for motor vehicles circulating ball gear, comprising means of bearings (20) bearing a nut (21) in the housing, wherein the bearing (20) on each end side in the bearing (20) disposed between the housing and the at least one spring element (24) Recirculating ball gear unit in the axial direction to withstand impact during operation, whereby the gap over time might result in damage to the bearing recirculating ball gearing and cause rattling sound interfering. Thus, operating within the range progressive characteristic curve according to the present invention, the spring element (24)
114144797
A study on mesh theory of gear sector pair steering gear with variable ratio
The possibility and way to make re circulating ball steering gear with variable ratio from dynamics and structure is analyzed in the article.Based on the theory of gear engagement,the equations of contact line between rack and gear sector and tooth profile of gear sector for automobile steering gear with variable ratio are derived.The calculation formulas of modification coefficient for the sector gear teeth tooth to avoid undercutting at the small end and pointing at the big end and the geometric dimensions of sector gear are given.Finally,a computation example is given,which proves the correctness of the theory.
Qin Jian-xu
116672258
Electric hydraulic power steering system for fully electric bus
The utility model discloses an electric hydraulic power steering system for a fully electric bus. The electric hydraulic power steering system for the fully electric bus is good in energy saving effect and comprises a steering wheel, a steering oil tank, a flow control valve and overflow valve assembly, a steering hydraulic pump, a steering driving three phase asynchronous motor, a frequency converter, a combined power supply, a rotation speed sensor of a steering driving motor, a rotation speed sensor of a whole vehicle driving motor, a front axle load sensor, a vehicle speed sensor and a circulating ball integrated power steering gear, wherein the circulating ball integrated power steering gear is composed of a steering screw rod, a steering control valve, a steering power cylinder, a steering nut and a steering gear sector. The electric hydraulic power steering system for the fully electric bus has the advantages that through changing of the method for controlling front axle load multi driving working conditions, rotation speed of the steering driving motor is controlled, steering energy saving performance is improved, and the requirements for portability, hand feeling, stability and fast response performance can be met.
125212286
MacPherson independent suspension front axle assembly with circulating ball steering mechanism
A MacPherson independent suspension front axle assembly with a circulating ball steering mechanism comprises a circulating ball power assisted steering device, a steering driving mechanism, a MacPherson independent suspension and a hydraulic disc brake system. The circulating ball power assisted steering device is arranged on a frame and connected with the MacPherson independent suspension through the steering drive mechanism which is a broken type steering trapezium mechanism. The MacPherson independent suspension comprises a transverse stabilization system. The hydraulic disc brake system is provided with an ABS device. The front axle assembly fills in the blank of adopting the MacPherson independent suspension system and the circulating ball power assisted steering device steering system which are matched for domestic light commercial vehicles, the front steering trapezium is large in steering power assistance, and ride comfort and controllability of vehicles are improved.