KR101043147B1 - Apparatus for all wheel steering for 6x6 wheels typed vehicle - Google Patents

Abstract

The present invention discloses a front wheel steering device for a 6x6 wheeled vehicle. The disclosed invention includes a T-type meter box that receives a rotational force from a steering wheel and distributes the rotational force to the first and second output shafts; An L-type meter box for changing a transmission direction of the rotational force distributed to the second output shaft of the T-type meter box; A first shaft and a third shaft steering gear box for decelerating the rotational force distributed to the first output shaft and the rotational force whose direction is changed by the L-shaped meter box at a predetermined ratio, respectively; First and third axis motion conversion mechanisms for receiving the decelerated rotational force from the first and third axis steering gear boxes, respectively, and converting the rotational force into linear motion force; First and third axis steering guide assemblies that respectively linearly move by forces converted by the first and third axis motion conversion mechanisms; The first and third axis steering guide assembly in pairs and branched in conjunction with the linear movement of the first and third axis steering guide assembly to the direction of the first and third axis wheel connected to each end First and third shaft tie rods for changing; A second shaft tie rod mounting bracket disposed independently between the first and third shaft steering guide assemblies; And a second shaft tie rod branched from the second shaft tie rod mounting bracket to support a second shaft wheel connected to each end thereof, and by the transmitted force when the steering wheel rotates. The first and third axle tire pairs are substantially identical but are steered at opposite steering angles with respect to each other. According to the present invention of such a configuration, by applying the ALL WHEEL STEERING system to a 6x6 wheeled vehicle, it is possible to steer by a minimum steering radius in a harsh environment or a special road condition that requires the minimum steering conditions. This has the effect of reducing steering time and improving maneuverability.

Description

Front wheel steering device for 6 × 6 wheeled vehicles {APPARATUS FOR ALL WHEEL STEERING FOR 6X6 WHEELS TYPED VEHICLE}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front wheel steering apparatus of a 6x6 wheeled vehicle. More particularly, the front wheel and the rear wheel of a 6x6 wheeled vehicle have substantially the same steering angle and are in opposite directions. A front wheel steering apparatus of a 6x6 wheeled vehicle which minimizes the total steering radius by steering.

In general, a 6x6 wheeled vehicle employs a front-wheel steering system that ensures that only the front wheels are steered during steering, which results in a relatively large draw radius. This fact is more apparent with reference to the conceptual diagram of FIG. 1, which shows the steering radius of a conventional 6x6 wheeled vehicle employing a front wheel steering system. Referring to FIG. 1, the steering radius of a 6x6 wheeled vehicle is determined by the angle formed by the axes of the front wheels 11W and 12w and the rear wheels 21W and 22w. (Iii) When the 21W, 22w maintains the forward direction, the steering radius depends solely on the steering angles of the front wheels 11W, 12w, and the steering radius becomes very large.

However, in recent years, the maneuvering operation of a 6x6 wheeled vehicle is often required even in a harsh environment or road conditions where a minimum steering radius is required, and above all, steering conditions required for export to a foreign country with various terrain and road conditions. And even in order to satisfy the maneuverability, improvement of the front wheel steering system for the conventional 6x6 wheeled vehicle has been requested | required.

Accordingly, the present invention has been made to solve the above problems of the prior art, the object of the present invention is to apply a ALL WHEEL STEERING system to a 6x6 wheeled vehicle, the minimum steering conditions The present invention provides a front wheel steering apparatus for a 6x6 wheeled vehicle that can steer with a minimum steering radius in such a harsh environment or in a special road condition to shorten steering time and improve maneuverability. .

In addition, an object of the present invention is to satisfy the steering conditions and maneuverability required for export to a foreign country with a variety of terrain and road conditions to facilitate the exploration of export to a variety of countries to the front wheel of a 6x6 wheeled vehicle ( It is to provide a steering apparatus.

According to an aspect of the present invention, there is provided a front wheel steering apparatus for a 6x6 wheeled vehicle, including: a T-type meter box configured to receive rotational force from a steering wheel and to distribute rotational force to first and second output shafts; An L-type meter box for changing a transmission direction of the rotational force distributed to the second output shaft of the T-type meter box; A first shaft and a third shaft steering gear box for decelerating the rotational force distributed to the first output shaft and the rotational force whose direction is changed by the L-shaped meter box at a predetermined ratio, respectively; First and third axis motion conversion mechanisms for receiving the decelerated rotational force from the first and third shaft steering gear boxes, respectively, and converting the rotational force into linear motion force; First and third axis steering guide assemblies that respectively linearly move by forces converted by the first and third axis motion conversion mechanisms; The first and third axis steering guide assembly in pairs and branched in conjunction with the linear movement of the first and third axis steering guide assembly to the direction of the first and third axis wheel connected to each end First and third shaft tie rods for changing; A second shaft tie rod mounting bracket disposed independently between the first and third shaft steering guide assemblies; And a second shaft tie rod branched from the second shaft tie rod mounting bracket to support a second shaft wheel connected to each end thereof, and by the transmitted force when the steering wheel rotates. The first and third axle tire pairs are configured to be substantially the same but steer at opposite steering angles with respect to each other.

In addition, in the present invention, the respective motion conversion mechanism, Pitman arm is coupled to the rotation of the output shaft of each gear box; And a drag link coupled to one side of the Pitman arm to linearly move according to the rotational movement of the Pitman arm.

In addition, a knuckle arm is coupled between each of the tie rods and the wheel of the present invention, and the knuckle arm is preferably configured to steer the wheel relative to its kingpin centerline in conjunction with the linear movement of the tie rod.

As described above, according to the all-wheel steering apparatus of the 6x6 wheeled vehicle according to the present invention, the minimum steering condition is required by applying the ALL WHEEL STEERING system to the 6x6 wheeled vehicle. In a harsh environment or a special road condition, the steering can be performed by a minimum steering radius, thereby reducing the steering time and improving maneuverability.

In addition, the front wheel steering apparatus of the 6x6 wheeled vehicle according to the present invention has an effect of easily satisfying the steering conditions and maneuverability required for export to a foreign country having various terrain and road conditions. .

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2A is a top view of a platform of a 6x6 wheeled vehicle equipped with an all-wheel steering device according to an embodiment of the present invention, and FIG. 2B is a perspective view thereof. 3 is a block diagram of an all-wheel steering apparatus of a 6x6 wheeled vehicle according to an embodiment of the present invention.

2A and 2B, a front wheel steering apparatus 1000 according to an embodiment of the present invention may include a steering assembly 1100 controlled by a driver and a steering assembly 1100 controlled by the steering assembly 1100. A first shaft steering assembly 1200, a second shaft steering assembly 1300, and a third shaft steering assembly that steer the front wheel, the middle wheel, and the rear wheel by force, respectively; 1400).

Referring to FIG. 3, the steering assembly 1100 is connected to a steering wheel 1110 directly operated by a driver and the steering wheel 1110 to stably support the steering wheel 1110 while receiving the input rotational force. It consists of a steering column 1120 that transmits to an input shaft 1130 of the T-shaped meter box 1210.

The first shaft steering assembly 1200 includes a T-shaped meter box 1210 having one input shaft 1130 and two output shafts 1211 and 1212, and a first output shaft 1211 of the two output shafts. A first shaft steering gear box 1220 for reducing the distributed rotational force at a predetermined ratio and a first shaft movement converting mechanism 1230 for converting the rotational force decelerated in the first shaft steering gear box 1220 into linear movement force. And branched from the first axis steering guide assembly 1240 and the first axis steering guide assembly 1240 which are linearly moved by the linear kinetic force converted by the first axis motion converting mechanism 1230, respectively. First shaft tie rods 1241 and 1242 and a pair of first shaft knuckle arms 1241n and 1242n coupled to the ends of the first shaft tie rods 1241 and 1242, respectively. A pair of first shaft wheels 1241w and 1242w are respectively coupled to ends of the pair of first shaft knuckle arms 1241n and 1242n to form a steering angle by the force transmitted from the steering wheel 1110. In this case, the pair of first shaft wheels 1241w and 1242w are collectively referred to as front wheels according to their positional characteristics.

The second shaft steering assembly 1300 may include a second shaft tie rod mounting bracket 1310 disposed independently between the first shaft and the third shaft steering assembly 1400, and the second shaft tie rod mounting bracket ( Second shaft tie rods 1311 and 1312 branched from 1310 and a pair of second shaft knuckle arms 1311n and 1312n respectively coupled to ends of the second shaft tie rods 1311 and 1312. It is provided. A pair of second shaft wheels 1311w and 1312w are coupled to the ends of the pair of second shaft knuckle arms 1311n and 1312n, respectively. In this case, the pair of second shaft wheels 1311w and 1312w are collectively referred to as middle wheels according to their positional characteristics.

The third axis steering assembly 1400 is an L-type meter box for changing a transmission direction of the rotational force distributed to the second output shaft 1212 of the two output shafts of the T-shaped meter box 1210 by about 90 °. 1410, a third shaft steering gear box 1420 for decelerating a rotational force whose direction is changed by the L-shaped meter box 1410, and a rotation force decelerated in the third shaft steering gear box 1420. A third axis motion conversion mechanism 1430 for converting the linear motion into linear motion force, a third axis steering guide assembly 1440 for linear motion by the linear motion force converted by the third axis motion conversion mechanism 1430, and Third shaft tie rods 1441 and 1442 branched and paired from the third shaft steering guide assembly 1440 and a pair of third couples respectively coupled to ends of the third shaft tie rods 1441 and 1442. And axial knuckle arms 1441n and 1442n. A pair of third axle wheels 1441w and 1442w are respectively coupled to ends of the pair of third axis knuckle arms 1441n and 1442n to form a steering angle by the force transmitted from the steering wheel 1110. At this time, the pair of third shaft wheels (1441w, 1442w) are collectively referred to as the rear wheel (後輪) according to the positional characteristics.

Meanwhile, referring to FIG. 4, the first shaft motion converting mechanism 1230 may include a first shaft Pitman arm 1231 coupled to the output shaft 1221 of the first shaft steering gear box 1220 and rotating. And a first axis drag link 1232 coupled to one side of the first axis Pitman arm 1231 to linearly move according to the rotational movement of the first axis Pitman arm 1231. However, the configuration of the above-described first axis motion conversion mechanism 1230 is only by the preferred embodiment of the present invention can be applied in any form as long as the mechanism can convert the rotational motion to linear motion in the present invention. Another example is a combination of pinion-rack gears. In addition, the third axis motion conversion mechanism 1430 is preferably of the same configuration as the first axis motion conversion mechanism 1230 described above, and therefore, its description and illustration will be omitted.

Hereinafter, the operation of the present invention will be described in detail with reference to the accompanying drawings.

4 is an operation diagram showing an operation principle of the front wheel steering apparatus of the 6x6 wheeled vehicle of FIG. 5A is an operation diagram showing the front wheel steering principle of the front wheel steering apparatus of the 6x6 wheeled vehicle of FIG. 3, and FIG. 5B is the front wheel steering of the 6x6 wheeled vehicle of FIG. This is an operation diagram showing the rear wheel steering principle of the device. Figure 6 is a front wheel steering state diagram of a 6x6 wheeled vehicle equipped with a front wheel steering apparatus according to an embodiment of the present invention, Figure 7 is a front wheel (all wheels) according to an embodiment of the present invention Iii) A conceptual diagram showing the steering radius of a 6x6 wheeled vehicle equipped with a steering device.

3 and 4, when the driver manipulates the steering wheel 1110, the generated rotational force is transmitted to the input shaft 1130 of the T-type meter box 1210 through the steering column 1120. The rotational force input through the input shaft 1130 is distributed to two output shafts through the T-type meter box 1210. Among them, the rotational force outputted to the first output shaft 1211 is inputted to the first shaft steering gear box 1220 by changing the force transmission direction by 90 °, and the remaining second output shaft 1212 transmits the rotational force to the relay link. The force transmission direction is changed by 90 ° via the L-shaped meter box 1410 to the first axis steering gear box 1220 and the third axis steering gear box 1420 symmetrically disposed on the platform. Will be entered.

Hereinafter, only the operation of the first shaft steering assembly 1200 will be described with reference to FIG. 4 for convenience of description.

Referring to FIG. 4, the rotational force input to the first shaft steering gear box 1220 as described above is decelerated and multiplied at a constant rate by a static gear ratio in the first shaft steering gear box 1220. The decelerated and boosted rotational force rotates the first shaft Pitman arm 1231 connected to the output shaft 1221 of the first shaft steering gear box 1220, and thus is connected to the first shaft Pitman arm 1231. The first axis drag link 1232 linearly moves to the right or left side of the drawing. The first axis drag link 1232, which linearly moves, linearly moves the first axis cradle assembly 1243 embedded in the first axis steering guide assembly 1240 connected thereto. This causes the pair of first shaft tie rods 1241 and 1242 connected to the first shaft cradle assembly 1243 to be pushed or pulled as an arrow. The movement of the first shaft tie rods 1241 and 1242 pushes or pulls the pair of first shaft knuckle arms 1241n and 1242n coupled to the ends thereof, and the first shaft knuckle arms 1241n and 1242n A pair of front wheels 1241w and 1242w coupled to the end are steered at a predetermined angle with respect to the hinge points of the first shaft knuckle arms 1241n and 1242n.

The steering operation principle of the first shaft steering assembly 1200 is equally applied to the third shaft steering assembly 1400 having substantially the same configuration to achieve the same steering angle. However, the steering direction of the first shaft steering assembly and the third shaft steering assembly are reversed due to the difference in the branched directions of the tie rods. This difference will be described with reference to FIGS. 5A and 5B.

Referring to FIG. 5A, when the first shaft steering guide assembly 1240 moves to the left, the left tie rod 1242 of the pair of first shaft tie rods moves the left front wheel 1242w to the kingpin centerline. Push to the reference so that the steering direction rotates clockwise. In addition, the right tie rod 1241 pulls the right front wheel 1241w with respect to the kingpin center line so that the steering direction rotates in a clockwise direction.

Referring to FIG. 5B, when the third shaft steering guide assembly 1440 moves to the left, the left tie rod 1442 of the pair of third shaft tie rods moves the left rear wheel 1442w to the kingpin centerline. Rotate the steering wheel to rotate counterclockwise. Further, the right tie rod 1442 pulls the right rear wheel 1441w with respect to the kingpin center line so that the steering direction rotates in a counterclockwise direction.

That is, the first and third shaft steering guide assemblies 1240 and 1440 have the same movement direction but the first and third shaft tie rods 1241, 1242; 1441 and 1442 branch in opposite directions, respectively. A position where the first and third shaft tie rods 1241, 1242; 1441, 1442 are coupled to the front and rear wheels 1241w, 1242w; 1441w, 1442w relative to the kingpin centerline. In the present invention, the front wheels and the rear wheels 1241w, 1242w; 1441w, 1442w rotate simultaneously by the same angle in the opposite direction by the same distributed torque. The front wheel steering state of the present invention is as shown in FIG.

Due to the above configuration and operation characteristics, the 6x6 wheeled vehicle equipped with the front wheel steering apparatus 1000 of the present invention has a front wheel 1241w and a rear wheel 1242w as shown in FIG. (Iv) The intersection of the axes of 1441w and 1442w becomes shorter from the vehicle. Accordingly, the present invention has a relatively very short steering radius compared to the prior art (see FIG. 1) in which only the front wheel is steered. 8A and 8B show a comparison of the steering radius of the prior art with the steering radius of the present invention. As shown in Figs. 7 to 8B, according to the all-wheel steering apparatus of the 6x6 wheeled vehicle of the present invention, the steer radius of the 6x6 wheeled vehicle is shorter than in the prior art so that a minimum steering condition is required. Maneuverable steering is possible in a short time under environmental or road conditions.

On the other hand, the present invention has been described with reference to the embodiment shown in the drawings, but this is only exemplary, those skilled in the art will understand that various modifications and equivalent embodiments are possible from this. However, the true technical protection scope of the present invention should be defined by the appended claims.

1 is a conceptual diagram showing a steering radius of a conventional 6x6 wheeled vehicle.

FIG. 2A is a top view of a platform of a 6x6 wheeled vehicle equipped with a front wheel steering apparatus according to an embodiment of the present invention, and FIG. 2B is a perspective view thereof;

3 is a block diagram of a front wheel steering apparatus for a 6x6 wheeled vehicle according to an embodiment of the present invention.

4 is an operation diagram showing an operation principle of the front wheel steering apparatus of the 6x6 wheeled vehicle of FIG.

5A is an operation diagram showing the front wheel steering principle of the front wheel steering apparatus of the 6x6 wheeled vehicle of FIG. 3, and FIG. 5B is the front wheel steering of the 6x6 wheeled vehicle of FIG. Operational diagram showing the rear-wheel steering principle of the device.

6 is a front wheel steering state diagram of a 6x6 wheeled vehicle equipped with a front wheel steering apparatus according to an embodiment of the present invention.

7 is a conceptual diagram showing a steering radius of a 6x6 wheeled vehicle equipped with a front wheel steering apparatus according to an embodiment of the present invention.

8A and 8B are comparison diagrams showing differences in actual steering radii of a 6x6 wheeled vehicle equipped with a front wheel steering apparatus according to an embodiment of the present invention.

 <Description of the symbols for the main parts of the drawings>

1000: Front Wheel Steering System

1110: Steering Wheel

1210: T-type meter box 1410: L-type meter box

1220: first axis steering gear box 1420: third axis steering gear box

1230: 1st axis motion conversion mechanism 1430: 3rd axis motion conversion mechanism

1240: first axis steering guide assembly 1440: third axis steering guide assembly

1241, 1242: 1st axis tie rod 1441, 1442: 3rd axis tie rod

1241n, 1242n: 1st axis knuckle arm 1441n, 1442n: 3rd axis knuckle arm

1241w, 1242w: 1st axis wheel (front wheel) 1441w, 1442w: 3rd axis wheel (rear wheel)

1310: 2nd axis tie rod mounting bracket

1311, 1312: 2nd axis tie rod

1311w, 1312w: 2nd axis wheel

Claims (3)

In the front wheel steering apparatus (1000) of a 6x6 wheeled vehicle, the steering apparatus (1000), A T-shaped meter box 1210 receiving a rotational force from the steering wheel 1110 and distributing the rotational force to the first and second output shafts 1211 and 1212; An L-shaped meter box 1410 for changing a transmission direction of the rotational force distributed to the second output shaft 1212 of the T-shaped meter box 1210; First and third shaft steering gear boxes 1220 and 1420 for decelerating the rotational force distributed to the first output shaft 1211 and the rotational force whose direction is changed by the L-shaped meter box 1410, respectively; First and third axis motion converting mechanisms 1230 and 1430 for receiving the decelerated rotational force from the first and third axis steering gear boxes 1220 and 1420, respectively, and converting the rotational force into linear motion force; First and third axis steering guide assemblies (1240, 1440) linearly moving by the forces converted by the first and third axis motion conversion mechanisms (1230, 1430), respectively; Branched in pairs from the first and third axis steering guide assemblies 1240 and 1440 and connected to one end of each of the first and third axis steering guide assemblies 1240 and 1440 in a linear motion. First and third axis tie rods 1241, 1242; 1441, 1442 that change the direction of the single and third axis wheels 1241w, 1242w; 1441w, 1442w; A second shaft tie rod mounting bracket 1310 disposed independently between the first and third shaft steering guide assemblies 1240 and 1440; And Second shaft tie rods 1311 and 1312 supporting the second shaft wheels 1311w and 1312w which are branched and branched from the second shaft tie rod mounting bracket 1310 to each end thereof. Including, When the steering wheel 1110 rotates, the first and third shaft wheels 1241w, 1242w; 1441w, 1442w are steered in substantially opposite directions with respect to each other by the transmitted force. Front wheel steering device 1000 for a 6x6 wheeled vehicle. The method of claim 1, The first and third axis motion conversion mechanisms 1230 and 1430 are respectively First and third shaft Pitman arms 1231 (not shown) coupled to the output shafts 1221 and 1421 of the first and third shaft steering gear boxes 1220 and 1420 to rotate; And A first axis coupled to one side of the first and third axis Pitman arms 1231 (not shown) to linearly move according to rotational movements of the first and third axis Pitman arms 1231 (not shown) And third axis drag link 1232 (not shown) A front wheel steering apparatus (1000) of a 6x6 wheeled vehicle comprising a. The method according to claim 1 or 2, First and third axis knuckle arms between the first and third shaft tie rods 1241, 1242; 1441, 1442 and the first and third shaft wheels 1241w, 1242w; 1441w, 1442w. 1241n, 1242n; 1441n, 1442n, respectively, and the first and third axis knuckle arms 1241n, 1242n; 1441n, 1442n are the first and third axis tie rods 1241, 1242; 1441, All-wheel steering device 1000 of a 6x6 wheeled vehicle that causes the first and third axle wheels 1241w, 1242w; 1441w, 1442w to steer relative to the kingpin centerline in conjunction with the linear motion of 1442. ).

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