JPH05112214A - Car heading changing device - Google Patents

Abstract

PURPOSE:To provide a car heading changing device, with which the heading can be changed with no use of the steering wheel on a road with minor width. CONSTITUTION:A car heading changing device is equipped with a leg device 3 possible to elongate and shrink and a motor to rotate a gear couple, one of which is mounted on a car body while the other gear is installed on the leg device, and therein a brake device 21 to control the relative rotation of a bearing 11, the car body, and the leg device is furnished between the car body and leg device, wherein the leg device is equipped with a hydraulic cylinder 6 and hydraulic motor. A revolving device is equipped at its body firmly with an upper revolving table 8 and a lower revolving table 9, and therefrom four rods are extended. As a result, the lower revolving table presses the road surface and puts the car body buoyant. The two tables are made possible to make relative rotation, and then rotation is transmitted in the sequence as the outer wheels 13 and then inner wheels 14 by a motor to put the ear body in rotating. When the desired rotational angle is attained, the rotation is stopped. The car body is fixed, and the four rods are retracted, and the tires of the car are grounded on the road surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle direction changing device used when a vehicle changes direction without using a steering wheel.

[0002]

2. Description of the Related Art Conventionally, a steering wheel is used to change the direction of an automobile as shown in FIG. The wheels that can be turned by the steering wheel may be front wheels or both front wheels and rear wheels may change tilt.

[0003]

However, when an automobile turns on a narrow road, the turning ability is determined by the minimum turning radius of the vehicle, so the road width is smaller than the road width determined by the minimum turning radius. If you can't turn. In addition, since the road width is narrow even on a tunnel, it is often impossible to change the direction. In this case, the car that entered from the entrance backs up and returns to the entrance again. Therefore, a high degree of skill was required to drive a car. Therefore, it is desired to develop a technology that enables the vehicle to change direction in a place narrower than the road width determined by the minimum turning radius of the vehicle.

The present invention has been made in view of the above circumstances, and an object thereof is to provide a direction changing device capable of changing the direction of a vehicle on a road having a narrow road width without using a steering wheel. It is what

[0005]

To this end, the vehicle turning device of the present invention comprises an extendable leg device having a turning device at the lower part of the vehicle body, the turning device comprising a turning gear pair. And a brake device for controlling the rotation of the turning device and a motor for rotating the turning gear pair, and the leg device is provided with a hydraulic cylinder and a hydraulic motor for driving the hydraulic cylinder.

[0006]

The main switch on the driver's seat of the turning device is turned on to fix the upper turning table and the lower turning table of the turning device body. When the other switches for raising and lowering are turned on, the four rods extend. As a result, the lower turning table presses the road surface and the vehicle body floats.
When the fixing drum and fixing shoe of the brake device are released from this state, both tables become rotatable relative to each other, and then the turning gear that meshes with the internal gear fixed to the lower turning table by the hydraulic motor. The vehicle body is rotated by rotating an external gear that is a gear. The rotation is stopped when the desired rotation angle is reached. Then, the vehicle body is fixed to the lower turning table, and then the rod of the hydraulic cylinder is pulled in to bring the tire of the vehicle into contact with the road surface.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, reference numeral 1 is a vehicle direction changing device. The direction changing device 1 has a leg device 3 and a turning device body 4. A leg device 3 is attached to a lower portion of a vehicle body 2 of an automobile, and a turning device body 4 is attached to a tip of the leg device 3. As shown in FIG. 3, the leg device 3 includes an inner cylinder 25 and an outer cylinder 26 that can be expanded and contracted by a hydraulic cylinder 6, and an upper end portion 7 of the outer cylinder 26 is fixed to a lower end portion of the vehicle body 2.

The turning device body 4 is attached to the tip of the inner cylinder 25. The turning device body 4 is provided with an upper turning table 8 and a lower turning table 9 which are positioned in parallel at regular intervals. The upper turning table 8 and the lower turning table 9 are relatively rotatable by bearings 11. Therefore, the upper turning table 8 and the lower turning table 9 can relatively rotate around the central axis 12 of the turning device body 4.

As shown in FIG. 4, the outer ring 13 of the bearing 11 is fixed to the upper turning table 8, and the inner ring 14 of the bearing 11 is fixed to the lower turning table 9. A large-diameter internal gear 15 is fixed to the inner surface of the inner ring 14 of the bearing 11. On the other hand, as shown in FIG. 6, an external gear 16 having a small diameter meshes with the internal gear 15.

On the other hand, a brake 21 is provided between the upper turning table 8 and the lower turning table 9 to control the relative rotation between the upper turning table 8 and the lower turning table 9. .. The brake 21 is provided with a fixing drum 23 and a fixing shoe 22 as shown in FIG. 5, and the fixing drum 23 is fixed to the lower turning table 9. The fixing shoe 22 is attached to the upper turning table 8. The fixing shoe 22 is opened and closed by a hydraulic cylinder 24.

The operation of changing the direction of the vehicle body 2 of an automobile using the direction changing device 1 thus constructed is as follows.

The vehicle is stopped at a location on the road where the vehicle should change direction. In this state, the turning device 1 is operated to change the direction of the vehicle body 2 of the automobile. In this case, first, the main switch of the driver's seat of the turning device 1 is turned on. As a result, the hydraulic pressure from the hydraulic pump is supplied to the hydraulic cylinder 24 of the brake 21 of the turning device 1, and the hydraulic cylinder 24
Is activated to spread the fixing shoe 22 and spread it, and the fixing drum 2
It is pressed against 3 to secure the fixing drum 23. As a result, the upper turning table 8 and the lower turning table 9 of the turning device body 4 are fixed.

In this state, when another switch for raising and lowering in the cab is turned on, pressure oil is supplied to the four hydraulic cylinders 6 and the leg device 3 including the inner cylinder 25 and the outer cylinder 26 extends. When the lower turning table 9 of the turning device main body 4 exceeds the outer circumference of the tire 17 as the leg device 3 including the inner cylinder 25 and the outer cylinder 26 extends, the lower turning table 9 moves on the road surface as shown in FIG. Is pressed to lift the tire 17 and the vehicle body 2.

When the hydraulic pressure of the hydraulic cylinder 24 of the brake 21 is discharged from this state and the fixing drum 23 and the fixing shoe 22 are opened, the upper turning table 8 and the lower turning table 9 face each other with respect to the center axis 12. It can be rotated. From this state, the hydraulic motor 5 is operated to rotate the external gear 16. Since the external gear 16 meshes with the internal gear 15, the rotation is transmitted to the internal gear 15. At this time, since the lower turning table 9 is fixed to the road surface 18 by being grounded, as a reaction, the upper turning table 8, the leg device 3 fixed to the upper turning table 8, and the vehicle body 2 of the automobile are bearings 11.
7 is rotated about the central axis 12 of FIG.

When the rotation angle reaches a desired angle, for example, 180 degrees, the external gear 16 is stopped again, so that the rotation of the vehicle body 2 of the automobile is stopped. From this state, hydraulic pressure is supplied to the hydraulic cylinder 24 again to operate the hydraulic cylinder 24 of the brake 21 to spread the fixing shoe 22 and fix the fixing drum 23, and thus the vehicle body of the vehicle with respect to the lower turning table 9 is fixed. Fix 2

From this state, the hydraulic pressure of the hydraulic cylinder 6 is discharged, the inner cylinder 25 is drawn, and the inner cylinder 25 is drawn into the outer cylinder 26. As a result, the leg device 3 is shortened and the automobile tire 1
7 contacts the road surface 18. This makes the car body 2
The turning motion of is ended.

When the vehicle body of an automobile is turned on a slope, if the external gear 16 is rotated with the brake 21 completely released, the vehicle body 2 of the automobile may be excessively rotated due to its own weight. Therefore, when turning on such a slope, the vehicle body of the automobile is turned while operating the brake 21.

[0018]

As described above, in the turning device of the present invention, the direction of the vehicle body is changed by rotating the vehicle body 2 of the automobile around the central axis 12 of the bearing 11. Therefore, it is necessary to use a steering wheel for changing the direction of the vehicle body. If the vehicle body 2 of the automobile does not have to be constrained by the minimum turning radius of the wheels and has a width that allows the vehicle body 2 to rotate about the central axis 12, the road or the narrow road having such a small road width can be obtained. The direction of the vehicle body in the car can be easily changed.

[Brief description of drawings]

FIG. 1 is an explanatory side view showing a state in which a tire of a vehicle body is grounded.

FIG. 2 is an explanatory side view showing a state in which the legs are extended and the tire is separated from the road surface.

FIG. 3 is an explanatory plan view of the turning device body.

FIG. 4 is a cross-sectional explanatory view taken along the line IV-IV in FIG.

FIG. 5 is an explanatory plan view of a brake.

FIG. 6 is an explanatory view showing a meshed state of an internal gear and an external gear.

FIG. 7 is an explanatory plan view showing a state in which the vehicle body is rotated 90 degrees.

FIG. 8 is an explanatory view showing a process of changing the direction of a vehicle body of an automobile using a conventional steering wheel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Direction changing device 2 Vehicle body 3 Leg device 4 Swing device body 5 Hydraulic motor 6 Hydraulic cylinder 7 Upper end 8 Upper turning table 9 Lower turning table 11 Bearing 12 Center shaft 13 Outer ring 14 Inner ring 15 Inner gear 16 Outer gear 17 Tire 18 road surface 21 brake 22 fixing shoe 23 fixing drum 24 hydraulic cylinder 25 inner cylinder 26 outer cylinder

Claims (1)

[Claims] 1. An extendable leg device having a turning device at a lower part of a vehicle body of an automobile, wherein the turning device controls a turning gear pair, a motor for rotating the turning gear pair, and rotation of the turning device. And a leg device that includes a hydraulic cylinder and a hydraulic motor that drives the hydraulic cylinder.