CN201457465U - Handle-type mechanical steering mechanism - Google Patents

Abstract

The utility model discloses a handle type mechanical steering mechanism. It includes steering handle, upper bracket, lower bracket, steering shaft, steering column tube, steering column tube support, universal joint, rack and pinion steering gear, tie rod, steering knuckle, steering handle through upper bracket The frame and the lower bracket are connected with the steering shaft. The steering shaft is connected with the rack and pinion steering gear through a universal joint. Steering column tube support, one end of the rack and pinion steering gear is connected to the steering knuckle through a tie rod, the other end of the rack and pinion steering gear is connected to the steering knuckle through a tie rod, the steering column tube support, the rack and pinion steering gear and the Frame connection. The utility model effectively solves the spatial layout problem of the center of the steering handle and the symmetrical output at both ends of the steering rack, and at the same time can realize a wider range of wheel rotation angles and reasonable inner and outer deflection angles of the wheels, and has the advantages of reasonable structure and simple operation And the advantages of easy installation.

Description

Handle-type mechanical steering mechanism

technical field

The utility model relates to a steering mechanism, in particular to a handle-type mechanical steering mechanism.

Background technique

All-terrain vehicles usually run on uneven roads such as dirt roads, snow, swamps, beaches, etc., requiring good power, passability, and convenient maneuverability. The steering system of the existing all-terrain vehicles mostly adopts the handlebar-tie rod type steering control mechanism, and the deflection of the wheel steering knuckle in the longitudinal direction is driven by the steering tie rod to realize the steering of the whole vehicle. However, due to the inclined arrangement of the steering shaft, the connection points of the tie rod and the wheel knuckle are all on the inner side of the wheel. This mechanism easily leads to an excessively large difference in deflection angle between the inner and outer wheels when turning, and only a limited turning angle can be realized.

Unreasonable steering mechanism parameters increase the additional resistance of driving and accelerate tire wear. Therefore, although the structure of the steering mechanism is simple, the determination of the spatial positions of key points such as the ball stud becomes particularly important, which makes the design improvement process very complicated.

Contents of the invention

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a handle-type mechanical steering mechanism with reasonable structure, simple operation and convenient installation.

Handle-type mechanical steering mechanism includes steering handle, upper bracket, lower bracket, steering shaft, steering column tube, steering column tube support, universal joint, rack and pinion steering gear, tie rod, steering knuckle, steering The handle is connected to the steering shaft through the upper bracket and the lower bracket, and the steering shaft is connected to the rack and pinion steering gear through a universal joint. There is a steering column tube support outside the column tube. One end of the rack and pinion steering gear is connected to the steering knuckle through a tie rod, and the other end of the rack and pinion steering gear is connected to the steering knuckle through a tie rod. The steering column tube support, gear teeth The bar steering gear is connected with the vehicle frame.

A spherical hinge is used between the two ends of the tie rod, the rack and pinion steering gear and the steering knuckle.

The utility model effectively solves the spatial layout problem of the center of the steering handle and the symmetrical output at both ends of the steering rack, and at the same time can realize a wider range of wheel rotation angles and reasonable inner and outer deflection angles of the wheels, and has the advantages of reasonable structure and simple operation And the advantages of easy installation.

Description of drawings

Fig. 1 is a structural schematic diagram of a handle-type mechanical steering mechanism;

Fig. 2 (a) is the front view of the metal joint of tie rod of the present utility model;

Fig. 2 (b) is the left side view of the metal joint of tie rod of the present utility model;

Fig. 2 (c) is the top view of the metal joint of tie rod of the present utility model;

In the figure: steering handle 1, upper bracket 2, lower bracket 3, steering shaft 4, steering column tube 5, steering column tube support 6, universal joint 7, rack and pinion steering gear 8, tie rod 9 , Steering knuckle 10.

Detailed ways

As shown in Figure 1, the handle-type mechanical steering mechanism includes a steering handle 1, an upper bracket 2, a lower bracket 3, a steering shaft 4, a steering column tube 5, a steering column tube support 6, a universal joint 7, a gear Rack steering gear 8, tie rod 9, steering knuckle 10, steering handle 1 is connected to steering shaft 4 through upper bracket 2, lower bracket 3, steering shaft 4 is connected to rack and pinion steering gear through universal joint 7 8 connections, the steering shaft 4 is provided with a steering column tube 5 and is connected by a steering bush and a tapered roller, the steering column tube 5 is provided with a steering column tube support 6, and one end of the rack and pinion steering gear 8 is connected through a tie rod 9 It is connected with the steering knuckle 10, the other end of the rack and pinion steering gear 8 is connected with the steering knuckle 10 through the tie rod 9, and the steering column tube support 6 and the rack and pinion steering gear 8 are connected with the vehicle frame.

As shown in FIG. 2 , spherical hinges are used between the two ends of the tie rod 9 and the rack and pinion steering gear 8 and the steering knuckle 10 . The metal joints provided at both ends of the tie rod 9, the right end is processed with internal thread, which is used to connect with the external thread at the end of the rod in the middle of the tie rod 9, and at the same time, the space position during installation can be adjusted; the left end is processed with an inner arc surface to realize the spherical joint connection between the tie rod 9 and the rack and pinion steering gear 8 and steering knuckle 10 .

The working process of the present utility model is as follows:

The steering handle 1 and the steering shaft are connected as a whole through the upper bracket 2 and the lower bracket 3 . The steering shaft 4 passes through the steering column tube 5, the upper end is supported by a steering bushing (not shown in Figure 1), and the lower end is supported on a tapered roller bearing in the steering column tube support 6 (not shown in Figure 1) . The steering column tube 5 is fixed on the vehicle frame through the steering column tube support 6 . The lower end of the steering shaft 4 is connected to the rack and pinion steering gear 8 through the universal joint 7, so as to adjust the installation positions of the steering shaft 4 and the rack and pinion steering gear 8.

The rack and pinion steering gear 8 is fixedly installed on the vehicle frame, and the two sides of the steering rack are respectively connected with the left and right tie rods 9 through ball hinges.

The front ends of the left and right tie rods 9 are connected with the steering rack of the rack-and-pinion steering gear 8 through ball joints, and the rear ends are connected with the wheel steering knuckle 10 through ball joints. Since the front suspension adopts McPherson independent suspension, the front and rear ends of the tie rods adopt ball hinges to realize the up and down swing of the wheels on the same side relative to the frame in the transverse plane.

After the steering handle 1 turns leftward (or rightward) by a certain angle θ, the steering shaft 4 transmits θ to the steering gear of the rack and pinion steering gear 8 at a constant speed through the universal joint 7 . Due to the meshing effect of the steering rack and the steering gear, the steering rack drives the front end of the tie rod 9 to generate a corresponding horizontal displacement S to the right (or to the left). The lower end of the tie rod 9 pulls the left and right wheel steering knuckles 10 to deflect them at a certain angle, thereby realizing the steering of the whole vehicle.

Claims (2)

1. 1.A kind of handle type mechanical steering gear, it is characterized in that comprising and turn to handgrip (1), bracket (2), bottom bracket (3), steering shaft (4), steering-column tube (5), steering-column tube bearing (6), universal-joint (7), rack and pinion steering gear (8), intermediate rod (9), steering swivel (10), turn to handgrip (1) by bracket (2), bottom bracket (3) is connected with steering shaft (4), steering shaft (4) is connected with rack and pinion steering gear (8) by universal-joint (7), steering shaft (4) is outer to be provided with steering-column tube (5) and by turning to lining to be connected with taper roller, the outer steering-column tube bearing (6) that is provided with of steering-column tube (5), rack and pinion steering gear (8) one ends are connected with steering swivel (10) through intermediate rod (9), rack and pinion steering gear (8) other end is connected with steering swivel (10) through intermediate rod (9), steering-column tube bearing (6), rack and pinion steering gear (8) connects to ground.

2. a kind of handle type mechanical steering gear according to claim 1 is characterized in that described intermediate rod (9) two ends and rack and pinion steering gear (8), steering swivel adopt spherical linkage between (10).