JPH0338975Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a frame for a mobile agricultural machine such as a single-wheel rice transplanter, seeder, or fertilizer spreader.

(b) Prior Art Conventionally, the frame of a single-wheel mobile agricultural machine, for example, the frame of a rice transplanter, is connected to a working machine consisting of an engine and a transmission case at the front, and a planting device at the rear, using side frames on both sides of the wheel. One side frame is used as a transmission case, and a transmission shaft that distributes power to the planting parts on both sides is made to cross the width of the machine from left to right, and the arrangement configuration of the transmission shaft is a. One that is installed in front of the rearward tilted seedling stand and above the wheels, and the other that is installed at the rear of the seedling stand as in Japanese Utility Model Publication No. 55-56514 or Japanese Unexamined Patent Publication No. 60-41407. Are known.

(c) Problems to be solved by the invention The one-wheel mobile agricultural machine of type a mentioned above has a power transmission shaft between the working machine and the wheels, so the longitudinal length of the machine body can be shortened, but the power transmission shaft and its Because the internal cylinder frame was raised to a higher position and the transmission case rose, single-wheel mobile agricultural machines were more unstable than two-wheeled agricultural machines, and the center of gravity of the machine became higher, making them even more unstable.

In addition, the mobile agricultural machinery of type b has a long body and has poor maneuverability, and in rice transplanters that have a planting section at the front, the left and right transmission cases extend from the back of the seedling stand to the front. The weight of the aircraft increased because it had to be taken out.

(d) Means for solving the problem The present invention is a one-wheel vehicle in which the engine and transmission case at the front and the working machine at the rear are connected by side frames on both sides of the wheel, with one side frame serving as a transmission case. In a mobile agricultural machine, a lateral transmission shaft for driving left and right operating parts of the working machine is housed in a cylindrical frame, and the cylindrical frame is placed at a low height close to the field and close to the rear surface of the wheels. By providing this, the fore-aft length of the fuselage can be shortened and the center of gravity can be lowered while being lightweight, thereby solving the above-mentioned problems.

(E) Function The power transmission shaft that crosses the left and right sides of the work equipment is at a low height close to the field and close to the rear of the wheels, so the length of the machine from the front engine to the work equipment is shortened. In addition, the transmission shaft, the cylinder frame housing it, and the accompanying transmission case are set at a lower position, lowering the center of gravity of the aircraft.

(F) Embodiment To explain a single-flowered rice transplanter, which is an embodiment of the present invention, as shown in the drawing, the engine 1 installed at the front of the machine.
and the planting device 3 installed at the rear of the transmission case 2.
The transmission case 4 is connected to the transmission case 4 by side frames 6 and 7 on both sides of the wheel 5. The side frame 6 on the transmission case 2 side is constituted by the transmission case 4, and the rear side frame 7 on the other side is connected to the transmission case 4. It is bent downward and screwed onto the upper surface of a side case 11, which will be described later, and the wheels 5 are pivotally supported by the rear part of a chain case 8 extending rearward from the rear part of the transmission case 2.

Further, the transmission case 4 of the planting device 3 has an upper part connected to the side frame 6, and has an L length when viewed from the side.
A side case 10 having a character shape, and the side case 10
A side case 11 extends rearward from a portion corresponding to the bent portion of the planting device 3 until it passes the lower end of the rearwardly tilted seedling platform 12, and further rises along the back surface of the seedling platform 12. The transmission shaft 13 is installed inside the rear part of the side case 10 and the side case 1 on the other side.
1 is located in front of the lower end of the seedling stand 12,
It is constructed by connecting a cylindrical frame 15 at a low height close to the field and close to the rear of the wheels 5, and the rear of the side case 11 is connected to a seedling stand 12.
It extends rearward to the bottom of the seedling stand 12 and then rises diagonally upward along the rear surface of the seedling stand 12. A drive arm 16 is supported by a shaft 17 in the middle of this rising part, and its upper and side parts are supported by a shaft 17. A screw shaft 20 is installed on the upper part of the connecting frame 18 extending from the case 10. A screw shaft 20 is screwed onto a guide piece 19 for reciprocating the seedling stand 12 from side to side.

Further, on both outer sides of the side cases 10 and 11, a planting depth adjustment lever 22 whose rear part is pivoted on a connecting frame 18 and a support shaft 21 protruding outward from the side case 11 is provided, and the planting depth adjustment lever 22 can be tilted up and down. Floats 23, 23 are provided which are freely pivoted and whose front parts are connected to the side frames 6, 7 by expandable/contractable links, and handles 24, 24 are provided at the rear ends of the connecting frame 18 and the side case 11. and side case 1
0 and the front end of the side case 11 on the other side are the side cases 10, 11 and the floats 23, 23.
a drive shaft 26 of the planting rods 25, 25 operating between;
It supports 26.

Furthermore, the output shaft at the rear of the transmission case 2 drives the axle 5 through a chain case 8, and the output shaft at the front drives the input shaft at the top of the side case 10 through a chain 27, as shown in FIG. driving the shaft 28;
The input shaft 28 is connected to the drive shaft 26 and the chain 2 on that side.
9, one end of the transmission shaft 13 is driven, and the other end drives the front drive shaft 26, rear shaft 17, and screw shaft 20 through chains 30, 31, and the chain 31 is stretched. Sprocket 3
By replacing 2 and 33, the rotation speed of the screw shaft 20, that is, the moving speed of the seedling platform 12 can be adjusted. When it reaches this point, it comes into contact with the arm of the seedling sending body 34 and rotates, thereby rotating the seedling sending body 34 and sending out the pine seedlings.

In the above-mentioned one-wheel rice transplanter, when each part of the planting device 3 is driven while moving the machine forward, the planting rod 2
5 and 25, the seedlings on the seedling stand 12 are scraped off one by one and planted on the rice field.

The cylindrical frame 15 housing the transmission shaft 13 connects the left and right side cases 10 and 11 at a low height close to the field and close to the rear of the wheel 5, as described above. Therefore, the length of the fuselage is shortened, improving maneuverability, and the center of gravity at the rear of the fuselage is lowered, and one side case 10 only needs to drive the planting rod 25 on that side, so it is smaller. , the weight of the aircraft can be reduced.

In the above-mentioned embodiment, a one-wheel rice transplanter was explained, but when the mobile agricultural machine is used as a seeding machine or a fertilizer application machine, the transmission shaft 13 drives the shaft of a feeding wheel that scrapes out seeds or fertilizer.

(g) Effect of the invention As mentioned above, the invention connects the engine 1 and transmission case 2 at the front and the working machine at the rear with the side frames 6 and 7 on both sides of the wheel 5, and In a single-wheel mobile agricultural machine with a transmission case, a transverse transmission shaft 13 for driving the left and right operating parts of the working machine is housed in a cylindrical frame 15, and the cylindrical frame 15 is installed at a low height close to the field. Since the wheel 5 is large and is provided close to the rear surface of the wheel 5, it is possible to shorten the front and rear length of the machine body and improve maneuverability, and also to lower the center of gravity, which improves the stability of single-wheel mobile agricultural machines that tend to become unstable. Maneuverability can be improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a partially omitted plan view of the single-flower rice transplanter, FIG. 2 is a side view of the same, and FIG. 3 is a developed plan view of the transmission device. 3... Planting device, 4... Transmission device, 5... Wheels, 6, 7... Side frame, 10, 11...
Side case, 13...Transmission shaft, 14...Axle, 1
5...Tubular frame.

Claims (1)

[Scope of utility model registration request] Front engine 1 and transmission case 2,
In a single-wheel mobile agricultural machine in which the rear working machine is connected to the working machine by side frames 6 and 7 on both sides of the wheel 5, and one side frame 6 is used as a transmission case, a lateral transmission drive that drives the left and right operating parts of the working machine is used. The shaft 13 is installed inside the cylindrical frame 15, and the cylindrical frame 15
A frame for a single-wheel mobile agricultural machine, characterized in that the frame is provided at a low height close to the field and close to the rear surface of the wheel 5.