JPH056U - Work machine mounting mechanism for two-wheeled passenger management machine - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to improve the structure of the working machine mounting mechanism of a two-wheeled riding management machine so that the rear wheels can swing freely and to obtain a riding management machine with a small turning radius. [Composition] In a passenger management machine of a type having two front and rear wheels and one or two auxiliary wheels, a lower link and a lower link, which are work machine connecting links and are formed in a mountain shape, are provided with a transmission case and a rear wheel in a rear wheel. It is arranged at a position deviating from the outer periphery swing locus.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement in the arrangement structure of working machine connecting links in a two-wheeled passenger management machine.

[0002]

[Prior Art]

 Conventionally, a four-wheel type or two-wheel type passenger management machine is 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. In order to obtain a riding management machine capable of turning with a minimum turning radius in a two-wheel riding management machine, both the front and rear wheels need to be able to rotate 90 degrees to the left and right. It must be constructed so that no other parts are placed in the trajectory. The present invention is to improve the arrangement of the working machine mounting device in a two-wheeled riding management machine to obtain a riding management machine in which the rear wheels can swing.

[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. In a passenger management machine of a type having two front and rear wheels and one or two auxiliary wheels, a lift arm 24, a lift link 32, and a lower link 33 are arranged in a mountain shape in a side view, and a rear wheel in a plan view. It is configured to be split right and left in a position that avoids the outer periphery swing locus of the steering rotation of the.

[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 rear wheel rotary plate 13R from the front wheel rotary plate 13F so that the two rotary plates simultaneously rotate in opposite directions. Like the rotary plate 13F, the rotary plate 13R is also arranged on the vertical transmission case 8R to rotate the rear wheel R in the direction opposite to the front wheel F. Since the transmission cases 8F and 8R are arranged vertically, rotation cannot be obstructed by other parts.

Further, since the lift arm 24, the lower link 33, the lift link 32, the lift cylinder 30 and the like are formed in a mountain shape and are arranged together with the lower link fulcrum 33a and are laterally distributed, the outer periphery of the rear wheel R is Since the rear wheel R is arranged at a position deviating from the swing locus, the rear wheel R can be rotated by about 90 degrees left and right. With such a configuration, both wheels can rotate and move on a circle C centered on the center of the vehicle body, and can make a sharp turn on a headland or the like.

[0007]

【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 passenger 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 11. As a result, the front wheels F and the rear wheels R change directions, and auxiliary wheels H 1 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. From the transmission case 5, a transformer shaft is arranged at the front and rear with a few bevel gears interposed, and the driving force rotates the gear 7 in the bevel gear cases 6F, 6R through the transformer shaft and the front wheel F. , Is transmitted to the front wheel F and the rear wheel R through the chain 9 and the gear 10 in the transmission cases 8F and 8R vertically attached to the side surface of the rear wheel R.

Next, the steering structure of the passenger management machine K will be described with reference to FIG. A steering wheel shaft 12 and links 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, which causes the front wheel F 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.

Like the rotary shaft 13F, the rotary shaft 13R is also arranged on the vertical transmission case 8R, 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.

Next, the configuration of the lower link 33, the lift arm 24, the lift cylinder 30, the lower link fulcrum 33a, the top link 31, and the lift link 32, which are working machine connecting links, will be described with reference to FIG. The lower link 33 and the top link 31 for mounting the work implement S are members located at the position closest to the rear wheel R. The link fulcrum 33a is provided further forward than the front part of the transmission case 8R on the side surface of the rear wheel R, the front end of the lift arm 24 is pivotally fixed to the lift arm fulcrum 25, and the intermediate rotation point 24a is made a peak. The lift arm 24 and the lift link 32 are formed in a shape.

The front end of the lower link 33 is pivotally supported by the lower link fulcrum 33a. A lift cylinder 30 for rotating the lift arm 24 up and down is disposed below the lower link 33. The lift cylinder 30 is attached to one side of the lift arm 24 in an overlapping manner, and the other lift arm 24 has the left and right lift arms 24 integrated by the axis of the left arm fulcrum 25. , Both rotate up and down. With this configuration, the lift arm 24 and the lower link 33 are always located above the rear wheel R, and the transmission case 8R is vertical, so that the lift arm 24, the lower link 33, and the lift cylinder. By rotating inside the front and rear ends of the rear wheel 30, the rear wheel R can freely swing without hindering its outer periphery swing locus.

As described above, the transmission cases 8F, 8R are made vertical and can be rotated right above the front wheels F, rear wheels R, and the lift arm 24, the lower link 33, and the lift cylinder 30 are configured as described above. Therefore, the front and rear wheels can be freely rotated to the left and right approximately 90 degrees, and the front and rear wheels are linked by the link 14 to enable the passenger management machine K to turn with the minimum turning radius.

Further, since the lift arm 24, the lower link 33, and the lift cylinder 30 are formed in a mountain shape, the minimum ground clearance of the work implement S becomes high, and it becomes possible to work without touching the crop. Finally, the structure 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 fitted and 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 the 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 to rotate the screw rod 21 projecting from the bevel gear into the arm case 15. The tread adjustment is performed by laterally moving the screw rod case 22 including the screw rod 21 and having the auxiliary wheel arm 16 attached at one end, so that the work can be performed 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. is there.

[0017]

[Effect of the device]

 The present invention has the following effects by being configured as described above. With the structure as claimed, the rear wheel R can be swung, and with the link 14 to connect the front and rear wheels as in the embodiment, in the two-wheeled passenger management machine, the front and rear wheels can be simultaneously moved in the opposite directions. It is possible to turn to the left and right by almost 90 degrees, and it is possible to turn the vehicle body at a minimum radius on a headland.

Further, since the lift arm 24, the lower link 33, the lift cylinder 30, the top link 31, etc. are formed in a mountain shape, the minimum ground clearance of the working machine S is increased, and work is performed without touching the work. It is possible.

[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 24 Lift arm 25 Lift arm fulcrum 30 Lift cylinder 31 Top link 32 Lift link 33 Lower link

Claims (1)

[Claims for utility model registration] 1. In a passenger management machine having two front and rear wheels and one or two auxiliary wheels, the lift arm 24, the lift link 32, and the lower link 33 are viewed in a side view. The two-wheel riding management machine of the two-wheel riding management machine is characterized in that the two-wheel riding management machine is arranged in a shape, and in a plan view, it is divided into left and right positions at positions avoiding the outer periphery swing locus of the steering rotation of the rear wheels. Working machine mounting mechanism of the machine.