CN105438261A - Steering system - Google Patents

Abstract

The invention provides a steering system. The steering system comprises a steering control mechanism (8), a steering transmission mechanism (9), a left steering knuckle (10) and a steering axle (11), wherein the steering transmission mechanism (9) is connected with the steering control mechanism (8); the left steering knuckle (10) is connected with the steering transmission mechanism (9); the steering axle (11) is hinged with the left steering knuckle (10); the left steering knuckle (10) comprises a steering knuckle main body (1); a pin hole (5) is formed in the steering knuckle main body (1); a pin shaft (6) is mounted in the pin hole (5); a bushing (7) is mounted between the pin hole (5) and the pin shaft (6); the pin hole (5) is elliptic; and the short axis diameter of the elliptic pin hole (5) is larger than the diameter of the bushing (7). Through the adoption of the steering system provided by the invention, good assembling precision and strength can be achieved.

Description

A kind of steering swivel system

Technical field

The present invention relates to a kind of steering swivel system.

Background technology

In the steering swivel system of existing vehicle, steering swivel plays vital important in the steering system as requisite vitals, existing steering swivel is connected with the steeraxle of vehicle by bearing pin, and connects the wheel flutter of vehicle by axle journal.When needs turn to, navigating mate steering wheel rotation, drives steering control mechanism to rotate, and then drives steering gear to rotate; And steering gear is connected with steering swivel, drive steering swivel is produced an angular turn relative to steeraxle by the rotation of steering gear, and the rotation of steering swivel has driven the rotation of vehicle tyre, thus achieves turning to of vehicle.

Existing steering swivel comprises steering swivel body, ear and lower ear on steering swivel body is also provided with, upper ear and lower ear are provided with the pin-and-hole hinged with steeraxle, described upper ear is connected with described steering swivel body by welding with described lower ear, again the pin-and-hole on upper ear and lower ear is processed after having welded, such way can affect welding effect, makes the intensity step-down of steering swivel; Also have and first pin-and-hole processing is carried out to upper ear and lower ear, after completion of processing, upper ear and lower ear are being welded on steering swivel body, are adopting the pin-and-hole disalignment that can make in such a way on ear and lower ear, thus producing assembly error with turning to during strong ties.

Summary of the invention

The object of the present invention is to provide the steering swivel system that a kind of assembly precision is high.

To achieve these goals, the present invention is a kind of steering swivel system realized like this, comprise steering control mechanism, the steering gear be connected with described steering control mechanism, the left steering that is connected with described steering gear save, save hinged steeraxle with described left steering and the right steering hinged with described steeraxle save, described left steering is connected by steering trapezoidal arm between saving and saving with described right steering; Wherein said steering control mechanism comprises steering handwheel, the steering shaft be connected with described steering handwheel, described steering shaft connect deflector by universal-joint connection for transmission axle, described transmission shaft by universal-joint; Described steering gear comprises the pitman arm be connected with described deflector and the steering drag link be connected with described pitman arm; Wherein said left steering joint/right steering joint comprises steering swivel body, and described steering swivel body is provided with ear, lower ear and axle journal; Described left steering joint is also provided with the spindle arm be connected with described steering drag link, ear and described lower ear are provided with coaxial pin-and-hole on described, the bearing pin hinged with described steeraxle is installed in described pin-and-hole, between described pin-and-hole and described bearing pin, lining is installed, pin-and-hole ovalize on described upper ear and/or lower ear, and the minor axis dimension of the pin-and-hole of described ellipse is greater than the diameter of described lining.Adopt and can to make up the pin-and-hole of upper ear and lower ear the punctual error produced in such a way, improve assembly precision when steeraxle and steering swivel being assembled, avoiding assembly error.

In order to improve assembly precision further, the pin-and-hole on the pin-and-hole on described upper ear and described lower ear is oval and measure-alike.

In order to improve the comformability of assembling further, described lining and axially there is opening.Such setting can make described lining have retractility in a small amount in the circumferential, can make there is higher comformability when described bearing pin and described peg in hole operation.

In order to improve the comformability of assembling further, the axis of described opening and described lining has angle.

Preferably, described angle is 10-30 °.

Preferably, described angle is 15 °

Adopt steering swivel system of the present invention, there is following beneficial effect: 1 improve pin-and-hole on steering swivel to plus effect; 2. assembly precision can be improved; Pin-and-hole on described steering swivel is arranged to ellipse, bearing pin can be made to be more prone to when fitting into the pin-and-hole on steering swivel and the pin-and-hole on steeraxle, improve assembly precision; 3. can improve the comformability of assembling; Described lining is provided with opening, described lining can be made to have circumferential shrinkage in a small amount, improve the assembling comformability of bearing pin in pin-and-hole.

Accompanying drawing explanation

The steering swivel system schematic diagram of Fig. 1 the present embodiment;

Fig. 2 be embodiment the front elevation of steering swivel;

Fig. 3 is the birds-eye view of Fig. 2;

Fig. 4 is the lining schematic diagram of the present embodiment.

Reference numeral: 1. steering swivel body; 2. go up ear; 3. descend ear; 4. axle journal; 5. pin-and-hole; 6. bearing pin; 7. lining; 71. openings; 72. angle α; 8. steering control mechanism; 81. steering handwheels; 82. steering shafts; 83. universal-joints; 84. transmission shafts; 85. deflectors; 9. steer drive; 91. pitman arms; 92. steering drag links; 10. left steering joint; 11. steeraxles; 12. right steering wheels; 13. steering trapezoidal arms; 14. spindle arms.

Detailed description of the invention

Introduce the present invention by by the embodiment shown in accompanying drawing below, but the present invention is not limited to introduced embodiment, any improvement or alternative on the present embodiment essence spirit, still belongs to the claims in the present invention scope required for protection:

Embodiment: as shown in Figures 1 to 4, a kind of steering swivel system, comprise steering control mechanism 8, the steering gear 9 be connected with described steering control mechanism 8, the left steering that is connected with described steering gear 9 save 10, save 10 hinged steeraxles 11 with described left steering and the right steering hinged with described steeraxle 11 save 12, described left steering save 10 save 12 with described right steering between be connected by steering trapezoidal arm 13; Wherein said steering control mechanism 8 comprises steering handwheel 81, the steering shaft 82 be connected with described steering handwheel 81, described steering shaft 82 connect deflector 85 by universal-joint 83 connection for transmission axle 84, described transmission shaft 84 by universal-joint 83; Described steering gear 9 comprises the pitman arm 92 be connected with described deflector 91 and the steering drag link 93 be connected with described pitman arm 92; Wherein said left steering saves 10/ right steering joint 12 and comprises steering swivel body 1, and described steering swivel body 1 is provided with ear 2, lower ear 3 and axle journal 4; Described left steering joint 10 is also provided with and is connected spindle arm 14 with described steering drag link 92, ear 2 and described lower ear 3 are provided with coaxial pin-and-hole 5 on described, the bearing pin 6 hinged with described steeraxle 11 is installed in described pin-and-hole 5, between described pin-and-hole 5 and described bearing pin 6, lining 7 is installed.

Wherein be arranged on pin-and-hole 5 ovalize on described upper ear 2 and described lower ear 3, and the pin-and-hole 5 on described upper ear 2 and the pin-and-hole 5 on described lower ear 3 measure-alike, and the minor axis dimension of the pin-and-hole 5 of described ellipse is greater than the diameter of described lining 7.

In addition, described lining 7 is axially provided with opening 71 along it, and described opening 71 has angle α 72 with the axis of described lining 7, described angle α 72 can be 10 °, also can be 30 °, in the present embodiment, and described angle α 72 is 15 °.

Weld the left steering in the present embodiment save 10/ right steering save 12 time, first on upper ear 2 and lower ear 3, process the oval pin-and-hole 5 of same size, again described upper ear 2 and lower ear 3 are welded on described steering swivel body 1, make in welding process as far as possible described on the pin-and-hole 5 on ear 2 and the pin-and-hole 5 on described lower ear 3 coaxial; After welding, utilize bearing pin 6 and steeraxle 11 hinged described left steering being saved 10/ right steering joint 12.Adopt and first ensure that left steering saves the welding effect of 10/ right steering joint 12 in such a way, make left steering save 10/ right steering joint 12 and there is high strength; In addition the pin-and-hole 5 on described upper ear 2 and described lower ear 3 is arranged to ellipse, even if produce error when welding, also bearing pin 6 can be made to fit into described left steering smoothly save in the upper ear 2 of 10/ right steering joint 12 and the pin-and-hole 5 of lower ear 3, improve assembly precision.In addition, it is the axially open 71 of 15 ° of angle α 72 that the lining 7 be arranged between described pin-and-hole 5 and described bearing pin 6 has with its axis, described lining 7 can be made to have shrinkage in a small amount in its circumferential direction, improve bearing pin 6 and pin-and-hole 5 turns of comformabilitys of joining.

In the process travelled, when needing the steering swivel system of vehicle to turn to, the steering handwheel 1 of chaufeur manual rotation steering control mechanism 8, the amplification by deflector 5 of the steering torque of described steering control mechanism 8 is delivered to steering gear 9 later, steering torque is delivered to described left steering and saves 10 by the connection that steering gear 9 saves the track arm 14 of 10 by its steering drag link 7 and described left steering again, make left steering save 10 to produce relative rotation relative to described steeraxle 11, steering torque is passed to right steering joint 12 by the steering trapezoidal arm 13 that rotates through of described left steering joint 10, make right steering save 12 also to produce relative rotation relative to described steeraxle 11, the rotation of 10/ right steering joint 12 is saved by left steering, drive and be transferred on the rotation that described left steering saves the left steering wheel/right steering wheel on 10/ right steering joint 12, thus reach turning to of vehicle.

In the present embodiment, described steering trapezoidal arm 13 is existing steering trapezoidal arm 13, comprises saving with described left steering and right steering saves the tie rod arm be connected respectively, and connects the tierod of two tie rod arms.

Claims (6)

1. a steering swivel system, comprise steering control mechanism (8), the steering gear (9) be connected with described steering control mechanism (8), the left steering that is connected with described steering gear (9) save (10), save (10) hinged steeraxle (11) with described left steering and the right steering hinged with described steeraxle save (12), described left steering saves (10) and saves with described right steering and pass through steering trapezoidal arm (13) between (12) and be connected;

Wherein said steering control mechanism (8) comprises steering handwheel (81), the steering shaft (82) be connected with described steering handwheel (81), described steering shaft (82) connect deflector (85) by universal-joint (83) connection for transmission axle (84), described transmission shaft (84) by universal-joint (83); Described steering gear (9) comprises the pitman arm (91) be connected with described deflector (85) and the steering drag link (92) be connected with described pitman arm (91);

Wherein said left steering joint (10)/right steering joint (12) comprises steering swivel body (1), and described steering swivel body (1) is provided with upper ear (2), lower ear (3) and axle journal (4), described left steering joint (14) is also provided with the spindle arm (14) be connected with described steering drag link (92), ear (2) and described lower ear (3) are provided with coaxial pin-and-hole (5) on described, the bearing pin (6) hinged with described steeraxle is installed in described pin-and-hole (5), lining (7) is installed between described pin-and-hole (5) and described bearing pin (6), it is characterized in that: pin-and-hole (5) ovalize on described upper ear (2) and/or lower ear (3), and the minor axis dimension of the pin-and-hole of described ellipse (5) is greater than the diameter of described lining (7).

2. steering swivel system as claimed in claim 1, is characterized in that: the pin-and-hole (5) on described upper ear (2) and the pin-and-hole (5) on described lower ear (3) are oval and measure-alike.

3. steering swivel system as claimed in claim 1 or 2, is characterized in that: described lining (7) has opening (71) in its axial direction.

4. steering swivel system as claimed in claim 3, is characterized in that: described opening (71) has angle α (72) with the axis of described lining.

5. steering swivel system as claimed in claim 4, is characterized in that: described angle α (72) is 10-30 °.

6. steering swivel system as claimed in claim 5, is characterized in that: described angle α (72) is 15 °.