JPH038725B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a rotation device for a mobile agricultural machine such as a single-wheel rice transplanter, fertilizer, or seeding machine.

(b) Prior Art Conventionally, when moving a single-wheeled mobile agricultural machine around, the machine was kept tilted toward the center of rotation by grasping the handle with both hands.

(c) Problems to be Solved by the Invention In the known mobile agricultural machine, the heavy and unstable body must be kept tilted toward the center of rotation during the machine rotation operation. Furthermore, the operator had to repeat the rotation operation every time he completed work in one direction, which caused considerable fatigue.

(d) Means for Solving the Problems The present invention provides a mobile agricultural machine in which wheels are provided in the center of the machine body and floats are arranged on both sides of the machine, each of the floats is supported so as to be movable up and down, and the floats are operated. By linking the device so that the outer float descends when the aircraft is turning, the aircraft can be kept in a stable state by the wheels, the float on the center of rotation (inner side), and the lowered outer float when the aircraft is turning. The above-mentioned problems were solved in a supportive manner.

(E) Effect When the machine is turned along the ridge where one stroke of work is completed in order to move on to the next stroke, when the outer float is lowered by the operating device, the machine tilts toward the center of rotation, Even in this state, the aircraft, whose center is supported by wheels, is supported on both sides by left and right floats, making it extremely easy to maneuver without having to hold the aircraft in an inclined position with both hands. .

(F) Embodiment To explain an embodiment of the present invention regarding a one-wheel type rice transplanter shown in the drawings, a transmission case 2 to which an engine 1 is attached, a rear planting transmission case 3, and handles 4 are connected to a transmission cylinder frame. 5 and the left and right frame rods 6, 6 are connected to form an integral frame body, and the wheels 7
is located at the center of the width of the machine and is pivotally supported by a chain case 8 that swings up and down about the output shaft of the transmission case 2, and the wheels 7
The floats 10, 10 arranged on both sides of the frame are pivoted at the rear to planting depth adjusting levers 11, 11 so as to be tiltable up and down, and the front parts are connected to the frame rod by links 12, 12 connected in a dogleg shape. It is connected to 6,6.

Further, an arm 13 erected at the front part of the chain case 8 is connected to a hydraulic cylinder 15, and a pump 16 connected to the hydraulic cylinder 15 has a valve, and an operating arm 14 of this valve is located at the center of the front part of the fuselage. Sensing float 17 attached so that it can swing up and down
As the machine body rises and falls due to the height of the plowing platform, the sensing float 17 swings up and down to follow this movement, the valve is switched and the hydraulic cylinder 15 is operated, which causes the wheels to move up and down. 7
raises and lowers to maintain the aircraft at a substantially constant height.

A lever panel 20 is fixed between the left and right handles 4, 4, and has locking portions in the middle and on the left and right, and at the bottom of the lever panel 20, an intermediate portion of a balance rod 22 is pivotally supported by a fulcrum shaft 21. The operating lever 23, which is pivoted to the center of the balance rod 22 so that it can only be tilted back and forth, is inserted into the guide groove of the lever panel 20, and the left and right float wires 24a, 24b connected to both sides are connected to the connecting pins of the links 12, 12. 12a, 12a
are connected to each other via metal fittings 25, 25 with elongated holes.

Further, as shown in FIG. 6, a pin 26 protrudes from the middle part of the operating arm 14 of the valve to both sides, and this pin 26 has an elongated ring 27 and an elongated hole 2.
Two plates 28, 28 having a diameter of 8a are loosely fitted, and the locking portions at the lower ends of the valve wires 30, 31 connected to both ends of the balance rod 22 are connected to the plates 28, 28.
8 is connected to the upper elongated holes 28b, 28b,
A knob 33 at the rear end of the rod 32 whose front end is connected to the ring 27 is locked to a receiving plate 35 erected in front of a seedling stand 34 that reciprocates from side to side.

In the above-mentioned rice transplanter, when the planting clutch is engaged to drive the seedling platform 34 and the planting rods 36, 36, and the traveling clutch is engaged to rotate the wheels 7, the planting levers 36, 36 are moved to the seedling platform. 3. Scrape off one pine seedling from above and plant it on the rice field.

When one stroke of planting is completed, the planting device is stopped by grasping the planting stop lever 37, and the operating lever 23 is tilted in the rotating direction, for example, to the left as shown in FIG. As the outer float wire 24a is pulled by the tilting of the balance rod 22, the outer connecting pin 12a, which was in the automatic state as shown in FIG. 1, is pulled rearward as shown in FIG. extends, and the float 10 on that side rotates downward around the rear, causing the aircraft to tilt as shown in Figure 11. In this state, push the handles 4, 4 laterally to easily and easily tilt the aircraft. Rotate quickly.

At this time, since the fuselage is supported by the wheels 7 in the center and the floats 10, 10 on both sides, there is no need to maintain the fuselage in an inclined position, and it is sufficient to simply rotate the fuselage.

Furthermore, when the operating lever 23 is tilted, the balance rod 22 pulls the outer valve wire 30, so that
The plate 28 at the lower end tilts the operating arm 14 upward via the pin 26, the valve is switched to the upward side, the hydraulic cylinder 15 is extended and the wheels 7 are pushed down, and the aircraft rises.

Therefore, when the operating lever 23 is tilted in the rotating direction when the aircraft is rotating, the aircraft will tilt toward the center of tilting and rise, and after completing the rotation, the operating lever 2
3 is returned to the central neutral position, the float 10 that had been lowered rises and becomes free, and the action of tilting the aircraft disappears, and the actuating arm 14 also becomes free, so that it is linked to the rise and fall of the sensing float 17. become.

Furthermore, during the planting work, the operating lever 23, which is constantly tensioned and biased rearward by the spring 38, is engaged with the intermediate locking part, so the balance rod 22 is approximately as shown in FIG. Since the hydraulic cylinder 15 is in a horizontal position, the float wires 24a, 24b and the valve wires 30, 31 are not pulled, and the knob 33 is set to the automatic position (lowered position), the hydraulic cylinder 15 detects the sensing float 17. Based on the results, the system is controlled so that the aircraft is at a substantially constant height above the ground.

Further, when traveling on the road, when the knob 33 is pulled rearward, the ring 27 rotates the actuating arm 14 to the upward side, so that the wheels 7 are lowered and the body is raised.

Furthermore, the floats 10, 10 may be tilted up and down centering on the front part, or may be raised and lowered as a whole, in short, when a part or all of them descends,
It is fine as long as the aircraft tilts to the opposite side.

FIG. 10 shows another embodiment, in which dog-shaped operating rods 39, 39 are pivotally attached to the front parts of the frame rods 6, 6, and the float wires 24a, 2
Connect the lower parts of 4a and bend the lower ends 39a, 39.
a is suspended from the front part of the links 12, 12, and when the float wire 24a or 24b is pulled by the tilting of the operating lever 23, the bent part 39a of one of the operating rods 39 is suspended in front of the float 10. As the lower part is pushed down, the fuselage tilts to the opposite side, similar to the previous embodiment.

(G) Effects of the Invention The present invention provides a mobile agricultural machine in which the wheels 7 are provided at the center of the machine body and the floats 10 are arranged on both sides of the machine as described above, and the floats 10 and 10 are supported so as to be movable up and down, respectively. , their float 1
0 and 10 are linked to the operating device so that the outer float will descend when the aircraft rotates, so when the operating device is operated when the aircraft is rotating after completing one stroke and moving on to the next stroke. , outer float 1
0 descends and pushes up that side of the aircraft, tilting the aircraft in the turning direction and moving the aircraft onto the left and right floats 10,
10, which eliminates the need for the operator to maintain the tilted attitude of the aircraft while holding the handles with both hands as in the past, making it extremely easy to turn the aircraft and allowing long hours of work to be carried out. It can significantly reduce fatigue when

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention and a wheel lifting device, in which FIG. 1 shows an interlocking mechanism between an operating device and a float, and FIG. 2 shows an action diagram of the same.
Fig. 3a is a side view of the rice transplanter, b is a plan view of the same as above, Fig. 4 is a plan view of the operating lever section, Fig. 5 is a side view of the same as above, Fig. 6 is a perspective view of the valve operating device, Fig. 7 8 is a side view of the valve operating device with the operating lever set in the neutral position, FIG. 9 is a side view of the same as above with the operating lever tilted to the side, and FIG. 10 is a hydraulic circuit diagram of the wheel lifting device. The figure is a side view showing another example of a device for raising and lowering the float, and FIG. 11 is a rear view showing the operation of the float when the aircraft is rotating. 4...Handle, 7...Wheel, 10...Float, 2
2... Balance rod, 23... Operation lever, 24a, 24b
...Float wire.

Claims (1)

[Claims] 1. A mobile agricultural machine in which a wheel 7 is provided in the center of the machine body and floats 10, 10 are arranged on both sides of the machine, in which the floats 10, 10 are each supported so as to be movable up and down, and the floats 10, 10 are connected to the operating device of the machine body. A traveling device for a mobile agricultural machine, characterized in that an outer float is linked so as to descend during traveling.