JPH058U - Steering mechanism for two-wheeled passenger management machine - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to improve a two-wheeled riding management machine to obtain a riding management machine having a small turning radius in a simple steering structure. [Structure] In a passenger management machine of a type having two front and rear wheels and one or two auxiliary wheels, a transmission case is lifted vertically and rotatable directly above the front and rear wheels.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to improvement of a steering and driving mechanism in a two-wheeled passenger management machine.

[0002]

[Prior Art]

 Conventionally, a four-wheel type or two-wheel type passenger management machine has been known. For example, it is as disclosed in JP-A-3-72834, JP-B-45-28261 and JP-A-2-41893.

[0003]

[Problems to be solved by the device]

 However, the conventional riding management machine has a larger turning radius and requires a wider headland than the one-wheel management machine. Further, in the case of the four-wheel type, the tread adjusting mechanism including the axle for traveling on the ridge becomes complicated. The two-wheeled type is convenient for running on ridges, but the steering mechanism for reducing the turning radius becomes complicated, and the cost is increased accordingly. The present invention is intended to solve the above problems by improving the two-wheeled riding management machine to obtain a riding management machine having a simple turning structure and a small turning radius.

[0004]

[Means for solving the problem]

 The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. This is a two-wheeled passenger management machine having two front and rear wheels and one or two auxiliary wheels, in which a transmission case is lifted vertically and rotatable just above the front and rear wheels.

[0005]

[Action]

 Next, the operation of the present invention will be described. When the steering wheel 11 is turned off, the rotary plate 13F is rotated via the steering wheel shaft 12. The rotary plate 13F is attached to an upper portion of a transmission case 8F provided vertically to the side surface of the front wheel and is connected to a gear 7. The rotation of the rotary plate 13F causes the transmission case 8F to rotate, and accordingly the front wheel F is rotated. Rotate. A link 14 is connected to the rotary plate 13R from the rotary plate 16F so that the two rotary plates simultaneously rotate in opposite directions. The rotary shaft 13R is also arranged on the vertical transmission case 8R like the rotary shaft 13F, and the rear wheel R is rotated in the direction opposite to the front wheel F. Since the transmission cases 8F and 8R are arranged vertically, the front wheels F and the rear wheels R can be rotated up to about 90 degrees left and right without being hindered from rotating by other parts. With this structure, both wheels can rotate on a circle C centered on the center of the vehicle body, and can make a sharp turn on a headland or the like.

[0006]

【Example】

 Next, a configuration of an embodiment according to the present invention will be described with reference to the accompanying drawings. FIG. 1 is a side view showing a state in which a working machine S is mounted on the rear portion of a two-wheeled riding management machine K using the present invention, FIG. 2 is a plan view of the same, and FIG. FIG. 3 is a front view showing a vehicle harmonic mechanism.

The two-wheeled riding management machine K is equipped with a working machine S at the rear part, and the front wheels F and the rear wheels R are driven by the power of the engine E, and the operator sitting on the seat 23 operates the steering wheel 12. As a result, the front wheels F and the rear wheels R change directions, and auxiliary wheels H can be mounted on the left and right sides of the vehicle body.

First, the structure of power transmission of the passenger management machine K will be described with reference to FIG. The passenger management machine K has an engine E arranged in a front bonnet, and the power of the engine E is transmitted from a crank pulley 2 attached to a crankshaft 1 via a belt 3 to a mission case 5 via a pulley 4. A transformer shaft is arranged in front of and behind the mission case 5 with several bevel gears interposed therebetween, and the driving force is to rotate the gear 7 in the bevel gear cases 6F and 6R through the transformer shaft to drive the front wheel F and the rear wheel. It is transmitted to the front wheels F and the rear wheels R through the chains 9 and the gears 10 in the transmission cases 8F and 8R vertically attached to the side surface of the R.

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 rotary plate 13F above the transmission case 8F. The rotary plate 13F is connected to the gear 7, and the rotation of the rotary plate 16F causes the transmission case 8F to rotate, and accordingly the front wheel F 1 to rotate. A link 14 is connected to the rotary plate 13R from the rotary plate 13F so that the two rotary plates simultaneously rotate in opposite directions.

The rotary shaft 13R is also arranged on the vertical transmission case 8R like the rotary shaft 13F, and the rear wheel R is rotated in the direction opposite to the front wheel F. Since the transmission cases 8F and 8R are vertically arranged, the front wheels F and the rear wheels R can be rotated up to about 90 degrees left and right without being hindered from being rotated by other parts. With this structure, both wheels can rotate on a circle C centered on the center of the vehicle body, and can make a sharp turn on a headland or the like.

Finally, the configuration of the auxiliary wheel H will be described with reference to FIGS. 1, 2, and 3. The auxiliary wheel H is mounted together with the caster 17 on the tip of an auxiliary wheel arm 16 having one end inserted in the arm case 15 protruding leftward or rightward from the main body frame and the other end protruding downward. The body frame side of the arm case 15 is connected to the auxiliary wheel bevel gear box 18 and the auxiliary wheel height adjusting shaft 19 and is controlled by an auxiliary wheel control device 20 provided near the seat 23.

When adjusting the tread, the auxiliary wheel control device 20 rotates the bevel gear in the auxiliary wheel bevel gear box 18, and the screw rod 21 protruding from the bevel gear in the arm case 15 is rotated. A screw rod case 22 that encloses the screw rod 21 and has the auxiliary wheel arm 16 attached to one end is moved left and right to adjust the tread, and it is possible to work according to the width between the ridges. 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 by raising it, it is possible to work without touching the crop. It is possible. In this way, the tread of the auxiliary wheel H and the vehicle height can be easily adjusted, and the structure is simple.

When it is necessary to work across a plurality of ridges, it is difficult to adjust the tread and height of the wheels with a four-wheeled passenger management machine, which tends to be structurally complicated, but two-wheeled As mentioned above, in the model, the tread and vehicle height can be easily adjusted, and auxiliary wheels with a simple structure can be used.

[0014]

[Effect of the device]

 The present invention has the following effects by being configured as described above. According to the present invention, the front and rear wheels are linked by the link 14 as in the embodiment, so that the front and rear wheels of the two-wheeled passenger management machine can be rotated in the opposite directions at the same time up to about 90 degrees left and right. In addition, the vehicle body can be turned with a minimum radius on a headland, and the steering structure for the front and rear wheels can be simplified, leading to cost reduction.

Further, since it is a two-wheel type, it is possible to cope with the work of straddling a plurality of ridges by installing auxiliary wheels which are easy in tread adjustment and vehicle height adjustment and have a simple structure.

[Brief description of drawings]

FIG. 1 is a side view showing a state where 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. 3 is a front view showing a tread of auxiliary wheels H and a vehicle height adjusting mechanism in a passenger management machine K.

[Explanation of symbols]

 K Two-wheel type passenger management machine S Working machine F Front wheel R Rear wheel H Auxiliary wheel 8F, 8R Transmission case 13F, 13R Rotating plate 14 Link 15 Arm case 16 Auxiliary wheel arm

Claims (1)

[Claims for utility model registration] 1. In a two-wheeled passenger management machine having two front and rear wheels and one or two auxiliary wheels, the transmission case is lifted vertically and the transmission case is moved forward and backward. A steering mechanism for a two-wheeled passenger management machine, which is characterized by being rotatable just above wheels.