Micro-clamping cycling ball crank stud steering gear assembly

Abstract

The invention discloses a micro-clamping cycling ball crank stud steering gear assembly which is composed of two-stage transmission pairs. A first-stage cycling ball screw nut rolling transmission pair is composed of a screw rod (3), a nut (9), a steel ball (8), a pipe (16) and a pipe screw (17), wherein the screw rod (3) and the nut (9) are arranged between two angular contact thrust ball bearings supported on a steering casing (1) and arranged in an upper cover (11). A second-stage sliding transmission pair is composed of a conical stud on the nut (9), a radial dovetail groove on a crank of a steering rocking arm shaft (5) and a guide wheel (10), wherein the conical stud is matched with the radial dovetail groove in a gapless mode under the effect of the pressure of a compression spring device (15), and the guide wheel rolls in a linear guiding groove fastened on the inner side of a lateral cover (4) on the steering casing (1) through a screw (7). During use, conversion between input and output is achieved through the two-stage transmission pairs. A steering gear is simple in structure and low in manufacture cost and has good transmission specific characteristics and operation stability.

Description

technical field [0001] The invention relates to a micro-card recirculating ball crank finger type steering gear assembly, which belongs to the technical field of automobile steering gears. Background technique [0002] At present, most of the models such as micro trucks and tricycles are used in rural areas. Due to the poor road conditions in most rural areas, the road conditions are not good, and most of the steering gears of micro trucks and tricycles use recirculating ball steering gears, spherical worm steering gears and rack and pinion steering gears. , the reverse transmission efficiency of these types of steering gears is very high, that is, the self-returning property is very good, so when the vehicle is driving on a bad road surface and the road conditions are poor, the steering wheel is subjected to a large impact force from the ground, which is transmitted back to the steering wheel , There will be a "beater" phenomenon. Although the steering is flexible, its tran...

AI Technical Summary

Problems solved by technology

[0002] At present, most of the models such as micro trucks and tricycles are used in rural areas. Due to the poor road conditions in most rural areas, the road conditions are not good, and most of the steering gears of micro trucks and tricycles use recirculating ball steering gears, spherical worm steering gears and rack and pinion steering gears. , the reverse transmission efficiency of these types of steering gears is very high, that is, the self-returning property is very good, so when the vehicle is driving on a bad road surface and the road conditions are poor, the steering wheel is subjected to a large impact force from the ground, which is transmitted back to the steering wheel , there will be a "beater" phenomenon. Although the steering is flexible, its transmission ratio and handling stability are very poor. Driving for a long time will easily make the driver feel tired, thereby reducing the road feel and causing accidents.

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