CN201511997U

CN201511997U - Steering transmission device

Info

Publication number: CN201511997U
Application number: CN 200920313211
Authority: CN
Inventors: 李渭军
Original assignee: Shaanxi Euease Automobile Co Ltd
Current assignee: Shaanxi Euease Automobile Co Ltd
Priority date: 2009-10-24
Filing date: 2009-10-24
Publication date: 2010-06-23
Anticipated expiration: 2019-10-24

Abstract

The utility model relates to a steering transmission mechanism, particularly to a steering transmission device suitable for transmitting power of buses and tourism buses. The steering transmission device at least comprises a steering column, an angle steering gear, a telescopic angle steering transmission shaft, a steering rocking arm, a steering longitudinal drawbar, a steering gear bracket, a power steering gear and a steering knuckle arm; and is characterized in that the steering column is connected with the telescopic angle steering transmission shaft through the angle steering gear, the telescopic angle steering transmission shaft is connected with the power steering gear, the power steering gear is vertically/horizontally arranged and is fixed on the steering gear bracket through five M20 bolts, the steering gear bracket is welded in a position at a distance of 350 mm from the main longitudinal beam of a bus frame, and the steering rocking arm is connected with a steering knuckle arm of a front axle through the steering longitudinal drawbar with a button-head pin. The steering transmission device has the advantages of simple structure, high strength, easy disassembly, maintenance and detection of the steering gear, stable operation and easy operation, and effectively solves the slight swinging and jittering phenomena of a steering wheel.

Description

A kind of steering transmission linkage

Technical field

The utility model relates to steering gear, particularly is applicable to a kind of steering transmission linkage of bus, touring coach power.

Background technology

Because of the vehicle frame floor level is 507mm, belong to chassis, high floor, the design of steering gear is: the placement direction of power steering arranges that for the front and back vertical and horizontal its front end is connected angle deflector upper unit steering column by the two-way universal joint cross of steering inner articulated shaft with the angle deflector; The rear end is connected with the track arm ball pin of propons by steering track rod with pitman arm.

Because the chassis belongs to chassis, high floor, it is again the solder type vehicle frame, adopt the arrangement form of the upright mode that crouches of power steering the most suitable, its characteristics are: by being welded in the crossbeam stationary deflector support of vehicle frame, power steering is installed on it, when bearing circle is beaten direction to the right, pitman arm pendulum backward in perpendicular; During reversing sense pitman arm also in perpendicular to forward swing, drive track arm simultaneously backward or move forward.The centralized positioning of the deflector output shaft of advanced design is 895mm for being 162mm apart from plane on the frame beam apart from the front axle center line, and this mode is compact but bigger with leaf spring movement interference amount.

Summary of the invention

The phenomenon that bearing circle slightly shakes, shakes occurs when the upright layout deflector of crouching is driven a vehicle early stage in order to overcome, the utility model provides a kind of pattern simple, the intensity height, and deflector maintenance easy to assemble detects; Whole mechanism operates steadily, and handles light steering transmission linkage, so that solve the problem that bearing circle slightly shakes, shakes.

The technical scheme that its technical matters that solves the utility model adopts is: design a kind of bus, the steering transmission linkage of touristy coach, which comprises at least steering column, the angle deflector, scalable angle steering inner articulated shaft, pitman arm, steering side tube, steering gear bracket, power steering and track arm, it is characterized in that: steering column is by being connected scalable angle steering inner articulated shaft with the angle deflector, scalable angle steering inner articulated shaft is connected with power steering, power steering is arranged for upright crouching, by being bolted on the steering gear bracket of 5 M20, steering gear bracket is welded on the position apart from vehicle frame main longitudinal grider 350mm, and the steering side tube by the band ball end between the track arm of pitman arm and propons connects.

Described angle deflector transmission speed ratio is 1: 1.

The beneficial effects of the utility model are: because plane 203mm on the deflector output shaft centre distance frame beam, apart from front axle center line 935mm, structure is more simplified when making the layout deflector, makes structure and leaf spring movement interference amount less, more stable when making vehicle ', more nimble.And the determining positions of deflector the stationarity of car load when turning to, the positive sensitieness of turning back, and bearing circle have or not shake, jitter phenomenon.Under the situation of ground plate hight,, make things convenient for the maintenance of power steering to detect because the supporting structure of stationary deflector is simple, and satisfies the layout of advance angle easily.Steering gear is provided with flexibly, and it is light to make that operation becomes.Because the motor coordination high conformity of leaf spring and pull bar, bearing circle is controlled stable.

Description of drawings

Below in conjunction with embodiment the utility model is described further.

Fig. 1 is the steering gear front view.

Fig. 2 is a steering gear front view rear end pitman arm forward swing view.

Fig. 3 puts view behind the pitman arm of steering gear front view rear end.

Fig. 4 is the steering gear birds-eye view.

Fig. 5 is the front view of steering gear bracket.

Fig. 6 is pitman arm and steering side tube enlarged drawing.

Fig. 7 is steering hardware movement interference check figure.

Among the figure: 1, steering column; 2, angle deflector; 3, scalable angle steering inner articulated shaft; 4, pitman arm; 5, steering side tube; 6, steering gear bracket; 7, power steering; 8, tire; 9, track arm; 10, leaf spring.

The specific embodiment

As shown in Figure 1, which comprises at least steering column 1, angle deflector 2, scalable angle steering inner articulated shaft 3, pitman arm 4, steering side tube 5, steering gear bracket 6, power steering 7 and track arm 9.Steering column 1 is by being connected scalable angle steering inner articulated shaft 3 with angle deflector 2, scalable angle steering inner articulated shaft 3 is connected with power steering 7, the power that is applied on the bearing circle outputs on the power steering 7 by angle deflector 2 and scalable angle steering inner articulated shaft 3, power steering 7 is arranged for upright crouching, by being bolted on the steering gear bracket 6 of 5 M20, steering gear bracket 6 is welded on the position apart from vehicle frame main longitudinal grider 350mm, steering side tube 5 by the band ball end between the track arm 9 of pitman arm 4 and propons connects, and turns to the rear of whole tying rod 5 that leaf spring 10 is arranged.

According to the size among Fig. 1, be plane 203mm on the deflector output shaft centre distance crossbeam, during apart from front axle center line 935mm, the front and back amplitude of oscillation of pitman arm 4 just can require to reach desirable pendulum angle according to the deflection angle of propons, and the characteristics of this device operation just are equivalent to a three-dimensional four-bar linkage in the motion of the stationary point of perpendicular and horizontal plane.

As Fig. 2 and shown in Figure 6, when the vehicle straight-line travelling, pitman arm 4 is 15 ° backward of vertical directions, loops left several the time when bearing circle, and pitman arm 4 is swung forward.

In like manner, as Fig. 3 and shown in Figure 6, when bearing circle was beaten to the right, pitman arm 4 was swung backward.By calculating, when pitman arm 4 was swung 40 ° forward, bearing circle was played 2.5 circles left; When pitman arm 4 was swung 40 ° backward, dish was played 2.5 circles to the right.Steering side tube 5 is followed pitman arm 4 and is arrived O forward at this moment ₁Point, or arrive O backward ₂The point.

As shown in Figure 4, when pitman arm 4 drove steering side tubes 5 swings, the position of steering side tube 5 had been between leaf spring 10 and the tire 8 also the time, satisfied the leverage hands-off requirement of moving, and can well transmit moment.This moment, pitman arm 4 saw that Fig. 2, tire 8 turn left 42 ° when forward swing to 40 °; When putting 40 ° backward, sees pitman arm 4 Fig. 3,31.5 ° of tire 8 turning clockwises.

Steering gear bracket 6 as shown in Figure 5 is welding bodies of a plate and three gussets, and it is welded on the position apart from vehicle frame main longitudinal grider 350mm, and this structure welding back intensity is good, the clearance envelope degree is also very big, simple in structure.

As shown in Figure 7, the center of turn that the midway location by finding pitman arm 4 pivot angles and the main leaf spring of leaf spring 10 the are determined check figure that takes exercises, do upwards that to be parallel to main leaf spring line of centers dynamic deflection be the line of 60mm, in like manner make the line that natural bow is 80mm downwards, the ball end center by track arm 9 and the circular arc of ball end center under two diverse locations of steering track rod 5 intersect that to measure deviation upwards be 7.1mm, downward deviation is 9.4mm, meets in the desired 10mm of design.

The position analysis of this utility model by each structure, and done leaf spring 10 and the correction of motion that turns to interference, at the road condition analyzing that has passed through the runway experiment, confirm this steering transmission linkage in operational process relatively steadily, sensitivity, light during handling maneuver.And the key that realizes this utility model is exactly the status requirement of power steering output shaft, be plane 203mm on the output shaft centre distance crossbeam, apart from front axle center line 935mm, such location positioning makes propons, and pitman arm 4 can be with quite reasonable pivot angle swing when turning to by inside and outside corner requirement, moment on the bearing circle also is delivered on the propons very reposefully by this device, makes the driver that feel more be arranged.

Claims

1. steering transmission linkage, which comprises at least steering column (1), angle deflector (2), scalable angle steering inner articulated shaft (3), pitman arm (4), steering side tube (5), steering gear bracket (6), power steering (7) and track arm (9), it is characterized in that: steering column (1) is by being connected scalable angle steering inner articulated shaft (3) with angle deflector (2), scalable angle steering inner articulated shaft (3) is connected with power steering (7), power steering (7) is arranged for upright crouching, by being bolted on the steering gear bracket (6) of 5 M20, steering gear bracket (6) is welded on the position apart from vehicle frame main longitudinal grider 350mm, and the steering side tube (5) by the band ball end between the track arm (9) of pitman arm (4) and propons connects.

2. a kind of steering transmission linkage according to claim 1 is characterized in that: described angle deflector (2) transmission speed ratio is 1: 1.