JP2544396Y2 - Steering mechanism for two-wheeled passenger management machine - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a steering and driving mechanism in a two-wheeled passenger management machine.

[0002]

2. Description of the Related Art Conventionally, a four-wheel or two-wheel passenger management machine has been known. For example, JP
No. 72834, Japanese Utility Model Publication No. 45-28261, and Japanese Utility Model Application Laid-Open No. 2-41893.

[0003]

However, the conventional passenger management machine has a large turning radius and requires a large headland as compared with a one-wheel type management machine or the like. In the case of the four-wheel type, a tread adjustment mechanism including an axle for running on a ridge is complicated. In the case of the two-wheel type, it is convenient for traveling on ridges, but the steering mechanism for reducing the turning radius is complicated, and there is a problem that the cost is increased accordingly. The present invention is intended to solve the above-mentioned problems by improving the two-wheeled passenger management machine and obtaining a passenger management machine having a small turning radius with a simple steering structure.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. Structure with two front and rear wheels and one or two auxiliary wheels
In a two-wheeled passenger management machine,
The front wheel is located just above the front wheel F at the top of the front wheel transmission case 8F.
Rear wheel transmission provided with a rotating plate 13F and erected on the side of the rear wheel R
In the upper part of the case 8R, right above the rear wheel R, the rear wheel rotating plate 13 is provided.
R fixed to the front wheel rotating plate 13F and the rear wheel rotating plate 13R.
However, when the steering wheel 11 is operated,
It is connected by an interlocking link 14 so as to rotate in the direction .

[0005]

Next, the operation of the present invention will be described. When the steering wheel 11 is turned, the front wheel rotating plate 13F is rotated via the steering wheel shaft 12. The front wheel rotating plate 13F is mounted on an upper part of a front wheel transmission case 8F provided vertically on the front wheel side surface, and is connected to the gear 7.
The rotation of the front wheel rotating plate 13F rotates the front wheel transmission case 8F, and rotates the front wheel F accordingly. A link 14 is provided from the front wheel rotating plate 13F to a rear wheel rotating plate 13R.
And the two rotating plates are simultaneously rotated in opposite directions. Similarly to the front wheel rotating plate 13F, the rear wheel rotating plate 13R is disposed on the vertical rear wheel transmission case 8R, and rotates the rear wheel R in the opposite direction to the front wheel F. Since the front wheel transmission case 8F and the rear wheel transmission case 8R are arranged vertically, the front wheel F and the rear wheel R can be turned to approximately 90 degrees left and right without being hindered by other components. . With such a configuration, both wheels can rotate and move on a circle C centered on the center of the vehicle body, thereby enabling a sharp turn on a headland or the like.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a first embodiment of the present invention; FIG. 1 is a side view of a state in which a working machine S is mounted on a rear portion of a two-wheeled riding management machine K using the present invention, FIG. 2 is a plan view of the same, FIG. It is a front view which shows a vehicle height adjustment mechanism.

The two-wheel passenger management machine K has a work machine S mounted at the rear, the front wheel F and the rear wheel R are driven by the power of an engine E, and the steering wheel 11 is operated by an operator sitting on a seat 23. , The front wheel F and the rear wheel R change direction, and auxiliary wheels H can be mounted on the left and right sides of the vehicle.

First, the power transmission structure of the passenger management machine K will be described with reference to FIG. In the riding management machine K, an engine E is arranged in a front hood, and its power is transmitted from a crank pulley 2 provided with a crankshaft 1 to a transmission case 5 from a pulley 4 via a belt 3 via a belt 3. From the transmission case 5, a transformer shaft is arranged in front and behind with several bevel gears interposed. The driving force rotates the gear 7 in the bevel gear cases 6F and 6R through the transformer shaft, and a chain 9 in the front wheel transmission case 8F and the rear wheel transmission case 8R vertically attached to the side surfaces of the front wheel F and the rear wheel R. The power is transmitted to the front wheel F and the rear wheel R through the gear 10.

Next, the steering structure of the passenger management machine K will be described with reference to FIG. A steering wheel shaft 12, a link, and the like from the steering wheel 11 are connected to a front wheel rotating plate 13F above the front wheel transmission case 8F. The front wheel rotating plate 13F is connected to the gear 7. The rotation of the rotating plate 13F rotates the front wheel transmission case 8F,
The front wheel F is rotated accordingly. A link 14 is connected to the rear wheel rotating plate 13R from the front wheel rotating plate 13F so that the two rotating plates rotate simultaneously in opposite directions.

The rear wheel rotating plate 13R is also connected to the front wheel rotating plate 13F.
Similarly, the rear wheel R is disposed on the vertical rear wheel transmission case 8R, and the rear wheel R is rotated in the opposite direction to the front wheel F. Front wheel transmission case 8
Since the F and rear wheel transmission cases 8R are arranged vertically, the front wheel F and the rear wheel R can rotate substantially 90 degrees left and right without being hindered by other components.
With such a configuration, both wheels can rotate and move on a circle C centered on the center of the vehicle body, thereby enabling a sharp turn on a headland or the like.

Next, referring to FIG. 1, FIG. 2 and FIG.
Will be described. The auxiliary wheel H has one end inserted into an arm case 15 protruding leftward or rightward from the main body frame and the other end protruding downward.
6 are attached to the tip of the housing 6 together with the casters 17. The main body frame side of the arm case 15 is connected to an auxiliary wheel bevel gear box 18 and an auxiliary wheel height adjusting shaft 19 and is controlled by an auxiliary wheel control device 20 provided near the seat 23.

At the time of tread adjustment, the auxiliary wheel control device 2
0, the bevel gear in the auxiliary wheel bevel gear box 18 is rotated, and the screw rod 21 protruding from the bevel gear in the arm case 15 is rotated.
The screw bar case 22 including the auxiliary wheel arm 16 and the auxiliary wheel arm 16 attached to one end thereof is moved left and right to adjust the tread, and the work according to the width between the ridges can be performed. Further, the height of the arm case 15 is adjusted by moving the auxiliary wheel height adjusting shaft 19 up and down by the auxiliary wheel control device 20, and it is possible to work without touching the crop by increasing the height. . As described above, the tread and the vehicle height of the auxiliary wheel H can be easily adjusted, and the structure is simple.

When it is necessary to work over a plurality of ridges, it is difficult to adjust the tread and height of the wheels with a four-wheel passenger management machine, and the structure tends to be complicated. As described above, in the wheel type, the tread and the vehicle height can be easily adjusted and the structure can be dealt with by mounting the auxiliary wheels having a simple structure.

[0014]

[Effects of the Invention] The present invention has the following effects due to the above configuration. That is, the link
14, the front wheel rotating plate 13F and the rear wheel rotating plate 13R
But linked together so that they rotate simultaneously in opposite directions
As a result, the steering wheel
The front and rear wheels at the same time
It can be turned to almost 90 degrees, and the body can be
It is possible to turn with minimum radius, and front and rear wheels
The steering structure can be simplified to reduce costs
It also leads to the transformation.

[Brief description of the drawings]

FIG. 1 is a side view of a state in which a work machine S is mounted on a rear part of a two-wheeled riding management machine K using the present invention.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view showing a tread of an auxiliary wheel H and a vehicle height adjusting mechanism in the passenger management machine K.

[Explanation of symbols]

 K Two-wheel passenger management machine S Work implement F Front wheel R Rear wheel H Auxiliary wheel 8F Front wheel transmission case 8R Rear wheel transmission case 13F Front wheel rotating plate 13R Rear wheel rotating plate 14 Link 15 Arm case 16 Auxiliary wheel arm

Claims (1)

(57) [Scope of request for utility model registration] 1. The vehicle has two front and rear wheels and one or two auxiliary wheels.
In the two-wheeled passenger management machine having the configuration shown in FIG.
Above the front wheel transmission case 8F, which is standing, right above the front wheel F
After the front wheel rotating plate 13F is provided on the side of the rear wheel R
The rear wheel rotates just above the rear wheel R above the wheel transmission case 8R.
A plate 13R is fixed, and the front wheel rotating plate 13F and the rear wheel rotating plate are fixed.
13R is operated by operating the steering wheel 11.
A steering mechanism for a two-wheel passenger management machine, wherein the steering mechanism is connected by an interlocking link 14 so as to sometimes rotate in the opposite direction .