CN109795546A

CN109795546A - A recirculating ball diverter with a nut and supporting structure

Info

Publication number: CN109795546A
Application number: CN201910280807.8A
Authority: CN
Inventors: 花逸峰; 谢军; 高飞; 孙松; 王春宏; 谭国强
Original assignee: Jiangsu Gang Yang Steering System Co Ltd
Current assignee: Jiangsu Gang Yang Steering System Co Ltd; Jiangsu Gangyang Steering System Co Ltd
Priority date: 2019-04-09
Filing date: 2019-04-09
Publication date: 2019-05-24

Abstract

The invention discloses a recirculating ball steering gear with a nut with a supporting structure, comprising a casing, a steering screw rod and a rocker arm shaft are arranged in the casing, and a movable steering nut is arranged on the steering screw rod, The end of the steering screw is provided with a bearing and a cover plate, the housing is provided with a cylindrical rotating cavity, the steering nut includes a one-piece steering body, and the center of the steering body is set. There is a through steering screw barrel, the top of the steering main body is provided with an arc-shaped supporting arc surface, and the supporting arc surface is provided with a pair of arc-shaped supporting arc bars. Once the steering screw is subjected to bending moment and torque, since the supporting arc on the top of the steering nut is against the inner wall of the rotating cavity, the steering screw is effectively supported, which greatly increases the maximum input torque that the steering screw can bear, and can be equipped with a larger front Axle load models.

Description

A kind of ball-and-nut steering gear of the nut with support construction

Technical field

The present invention relates to a kind of ball-and-nut steering gears, more precisely, being a kind of circulating ball of the nut with support construction turn To device.

Background technique

The steering screw of existing ball-and-nut steering gear can be deformed under the action of bending moment and torque, lead to steel ball Discontinuity in raceway, therefore the input torque value that diverter can be born is smaller.As shown in figure 9, existing circulating ball There are gap K between steering nut 6S and shell 1S on the steering screw 3S of diverter, once steering screw 3S is deformed, Steering nut 6S cannot get any support.

Summary of the invention

The present invention mainly solves technical problem present in the prior art, to provide a kind of nut with support construction Ball-and-nut steering gear.

Above-mentioned technical problem of the invention is mainly to be addressed by following technical proposals:

A kind of ball-and-nut steering gear of the nut with support construction includes a shell, is equipped with one in the shell and turns to spiral shell Bar and a rocker arm shaft, the steering screw are equipped with a mobilizable steering nut, and the end of the steering screw is equipped with One bearing and a cover board, which is characterized in that a cylindric rotation chamber is equipped in the shell, the steering nut includes The center of one block-like steering main body, the steering main body is equipped with a perforative steering barrel, the top of the steering main body Portion is equipped with the support cambered surface of an arc, and the support cambered surface is equipped with the supporting arc item of a pair of of arc, the supporting arc item Arc radius and the arc radius of inner wall of the described rotation chamber be adapted, the two sides of the steering main body are respectively equipped with one Plane is turned to, described wherein one turns to plane equipped with several mounting holes, and the mounting hole is equipped with a dismountable steel Ball cannula member.

As preferred embodiments of the present invention, the steel ball cannula member includes a vessel clamp and a pair of of conduit, described Vessel clamp includes the arc groove and several fixing threaded holes of a pair of of arc, and the radius of the radian of the arc groove is led with described Pipe is adapted.

Nut of the invention had the advantage that with the ball-and-nut steering gear of support construction once steering screw bending moment and Torque, since the supporting arc item at the top of steering nut resists the inner wall of rotation chamber, steering screw is effectively supported, greatly The maximum input torque that steering screw can be born is improved greatly, the vehicle of bigger preceding thrust load can be carried.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the schematic perspective view of the ball-and-nut steering gear of nut of the invention with support construction；

Fig. 2 is the stereochemical structure decomposing schematic representation of ball-and-nut steering gear of the nut with support construction in Fig. 1；

Fig. 3 is the schematic perspective view of the shell of ball-and-nut steering gear of the nut with support construction in Fig. 2；

Fig. 4 is cross-sectional view of the shell in Fig. 3 along line A-A；

Fig. 5 is the further stereochemical structure decomposing schematic representation of the ball-and-nut steering gear in Fig. 2；

Fig. 6 is the schematic perspective view of the vessel clamp of the ball-and-nut steering gear in Fig. 1；

Fig. 7 is the schematic diagram of the section structure of the ball-and-nut steering gear in Fig. 1；

Fig. 8 is the schematic diagram of the section structure of the ball-and-nut steering gear in Fig. 1, is at this time another visual angle；

Fig. 9 is the schematic diagram of the section structure of ball-and-nut steering gear in the prior art.

Specific embodiment

The preferred embodiment of the present invention is described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.

As shown in Figures 1 to 6, ball-and-nut steering gear of the nut with support construction includes a shell 1, is set in the shell 1 There are a steering screw 3 and a rocker arm shaft 2, which is equipped with a mobilizable steering nut 6, the end of the steering screw 3 End is equipped with a bearing 4 and a cover board 5, and a cylindric rotation chamber 100 is equipped in the shell 1, which includes one blocky Steering main body 60, the center of the steering main body 60 is equipped with a perforative steering barrel 61, and the top of the steering main body 60 is equipped with The support cambered surface 62 of one arc, the support cambered surface 62 are equipped with the supporting arc item 621 of a pair of of arc, the arc of the supporting arc item 621 The arc radius of the inner wall of radius and the rotation chamber 100 is adapted, and it is flat that the two sides of the steering main body 60 are respectively equipped with a steering Face 63, wherein one turns to plane 63 equipped with several mounting holes 631 for this, which is equipped with a dismountable steel ball and leads Pipe fitting 7.

The steel ball cannula member 7 includes a vessel clamp 71 and a pair of of conduit 72, which includes the arc of a pair of of arc Groove 711 and several fixing threaded holes 712, the radius of the radian of the arc groove 711 and the conduit 72 are adapted.

As shown in Figure 7 and Figure 8, once 3 bending moment of steering screw and torque, due to the branch at the top of steering nut 6 Support arc item 621 resists the inner wall of rotation chamber 100, and steering screw 3 is effectively supported, and substantially increasing steering screw 3 can hold The maximum input torque received can carry the vehicle of bigger preceding thrust load.

In addition, avoiding steering nut 6 because of steering screw 3 since the side of steering nut 6 is arranged in steel ball cannula member 7 Deformation and cause to damage.And steering screw in the prior art, it is generally arranged at the top of steering nut, is easy to be squeezed And deformation occurs.

Not limited to this, any change or replacement expected without creative work should all be covered in guarantor of the invention Within the scope of shield.Therefore, protection scope of the present invention should be determined by the scope of protection defined in the claims.

Claims

1. A recirculating ball diverter with a nut belt support structure, comprising a housing (1), wherein a steering screw (3) and a rocker shaft (2) are provided in the housing (1), and the The steering screw (3) is provided with a movable steering nut (6), and the end of the steering screw (3) is provided with a bearing (4) and a cover plate (5). (1) A cylindrical rotating cavity (100) is provided inside, the steering nut (6) includes a one-piece steering body (60), and the center of the steering body (60) is provided with a penetrating steering The screw barrel (61), the top of the steering main body (60) is provided with an arc-shaped supporting arc surface (62), and the supporting arc surface (62) is provided with a pair of arc-shaped supporting arc bars (621) , the arc radius of the support arc (621) is adapted to the arc radius of the inner wall of the rotating cavity (100), and a steering plane (63) is respectively provided on both sides of the steering body (60). ), a plurality of mounting holes (631) are provided on one of the turning planes (63), and a detachable steel ball conduit piece (7) is provided on the mounting hole (631).

2. The recirculating ball diverter with a nut supporting structure according to claim 1, wherein the steel ball conduit member (7) comprises a conduit clamp (71) and a pair of conduits (72), the The conduit clamp (71) comprises a pair of arc-shaped arc grooves (711) and several fixing screw holes (712), and the arc radius of the arc-shaped groove (711) is the same as that of the conduit (72). adapt.