JPH0524256Y2 - - Google Patents

Description

[Detailed explanation of the invention] (a) Industrial application field This invention is a walk-behind rice transplanter equipped with other working equipment such as a fertilization device or a chemical spraying device, and these working equipment are connected to the transmission device of the rice transplanter. The present invention relates to a power extraction device for a walking rice transplanter that extracts and drives power.

(b) Prior art Conventionally, a drive case with the rear end rising diagonally backward is connected to the rear of the aircraft, which also serves as a transmission case, and a first shaft, which also serves as an input shaft, is connected to the drive case in order from the front. , a walking rice transplanter that supports an array of a second shaft serving as an intermediate shaft, a third shaft that drives a seedling delivery device at the lateral moving end of the seedling platform, and a spiral shaft that reciprocates the seedling platform in the horizontal direction. A walking type rice transplanter in which a working machine such as a fertilization device or a chemical spraying device attached thereto is driven by the third shaft is already known. In addition, a blower is mounted on the transmission case in front of the wheels, and this blower is driven by the input shaft of the transmission case or the output shaft of the engine, and the blower's discharge port is placed behind the wheels. A device connected to a machine with a hose is also already known.

(c) Problems to be solved by the invention The power take-off device in the known walk-behind rice transplanter drives the working machine at the center of the front of the seedling platform using a power transmission path that detours from behind the seedling platform to below it. As a result, the transmission device became complicated and it was necessary to install the transmission device in a narrow space at the back of the seedling stand.
The distance between the seedling stand and the rising part of the drive case has to be widened, which increases the size of the machine, and also causes problems such as the transmission mechanism inside the drive case being loaded with the driving force for other work equipment. There was a problem. In addition, the system in which the blower on the transmission case at the front of the wheel is driven by the input shaft of the transmission case or the output shaft of the engine has too high a rotational speed, making it difficult to use it as a fertilizer spreader. In order to achieve proper rotation, an expensive speed reducer is required, and if the blower is connected to a chemical applicator near the planting device with a hose, the hose becomes abnormally long. Driving other working machines in the vicinity requires a long transmission mechanism, which increases costs and reduces air blowing efficiency or transmission efficiency.

(d) Means for solving the problem This invention connects the transmission case to the front part of the machine body that also serves as the transmission case, connects the drive case of the planting device to the rear part, and transmits the transmission to the drive case. In the walk-behind rice transplanter equipped with a planting device having a planting body driven by the power of The above-mentioned problems have been solved by configuring the PTO rotating body to be mounted on a portion of the first shaft facing the opening, and a power take-off device to be attached to the opening.

(E) Function: When only planting is performed, the power extraction attachment is not installed; when planting and other work, such as fertilization, are performed at the same time, a fertilizer tank and a pump or delivery device for delivering fertilizer are used. A fertilizing pipe and the like are attached to the machine body, and a power extraction device is attached to the opening at the front end of the drive case and interlocked with the first shaft.

In this state, when the machine moves forward while driving each part, the planting body scrapes off the seedlings on the seedling stand one by one and plants them in the field, and the fertilization device is connected to the first fertilizer via the power extraction device and the transmission device. Driven by a shaft.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a machine body equipped with an engine 2 and a transmission case 2a at the front, each of which has a cylindrical shape that also serves as a transmission case, and output shafts 3, 3 protruding left and right from the transmission case 2a. A planting device 7, which supports and drives left and right wheels 6, 6 via chain cases 4, 4 and swing transmission cases 5, 5, and is attached to the rear of the machine body 1, is connected to the rear of the machine body 1. A drive case 8 whose rear part rises diagonally backward, and a seedling stand 10 that runs along the front of the rising part of the drive case 8 and reciprocates from side to side.
, a planting body 11..., a center float 12, side floats 13, 13, etc.

The drive case 8 has a first shaft at the front which serves as an input shaft and also serves as a planter shaft.
A shaft 15 and a second shaft 16 at the rear of the shaft 15 serve as an intermediate shaft.
The rear rising portion supports a third shaft 17 consisting of a sending shaft and a spiral shaft 18 for reciprocating the seedling carrier 10 to the left and right. An input sprocket 20 with a planting clutch 20a attached to the first shaft 15 is driven by a sprocket of the transmission case 2a via a chain 21, and another sprocket 22 of the first shaft 15 is driven by a sprocket 2 of the second shaft 16.
3, 24 and the third shaft 1 through the chains 25, 26
7 drives sprocket 27.

The body 1 is connected to the front end surface of the drive case 8 that is closer to one side than the center in the lateral direction, and an opening 28 is provided in the front surface of the drive case 8 that is closer to the other side, and a portion of the first shaft 15 that faces the opening 28 is provided. is PTO gear 3
0 is fixed, and a lid 31 is removably attached to the opening 28 with bolts 32 when only planting is performed.

Further, as shown in FIG. 3, the power extraction device 33 supports transmission shafts 37 and 38 on the drive case 8 side and outside of the mounting plate 36 of the gear case 35, and the inner transmission shaft 37 is connected to the PTO gear 30. A meshing gear 39 is attached, and the gear 39 is attached to the outer transmission shaft 38.
9, and an output sprocket 41 is attached to the protrusion of the upper transmission shaft 38.

Further, a fertilizer tank 45 is attached to a portion of the body 1 corresponding to the wheels 6, 6, and the fertilizer tank 4
The input sprocket 48 of the pump 47 connected to the lower part of the discharge pipe 46 of No. 5 and mounted on the mounting plate 54 is driven by the output sprocket 41 via the transmission 50 and chains 51, 52.
The paste-like fertilizer sucked in and discharged from the fertilizer tank 45 by the pump 47 is pumped through the hose 53 to the fertilization pipe 55, so that it is fertilized into the muddy soil on the side of the seedlings to be planted.

The pump 47 serves as a feeding device when the working machine is a granular fertilizer application device or a chemical spraying device.

In the drawing, 56 is an apron, and 57 is a delivery belt with projections.

In the rice transplanter described above, when planting seedlings and fertilizing at the same time, the power take-off device 33 is screwed into the opening 28 of the drive case 8, and the power take-off device 33 is connected to the pump 47.
are interlocked as described above.

At that time, the transmission devices 5 arranged in a row in the front-rear direction
0, the pump 47 can be driven by connecting the pump 47 and the output sprocket 41 of the power extraction device 33 through chains 51 and 52, and the engine 2 drives the wheels 6 through the transmission case 2a and the following transmission devices. , 6. When the seedling stand 10, the planting body 11..., and the pump 47 are driven, the planting body 11... scrapes off the seedlings in the seedling stand 10 one by one and plants them on the field surface, and the seedlings in the fertilizer tank 45. The paste-like fertilizer is pumped by the pump 47 and applied through the fertilization pipe 55 into the mud.

(G) Effect of the invention In this invention, a transmission case 2a is connected to the front part of the machine body 1 which also serves as a transmission case, a drive case 8 of a planting device 7 is connected to the rear part, and the transmission is transmitted to the drive case 8. In a walk-behind rice transplanter equipped with a planting device 7 having a planting body 11 driven by power generated by supporting the first shaft 15, and the opening 2 of the first shaft 15;
Since the PTO rotating body is attached to the part facing the rice transplanter 8 and the power take-off device 33 is attached to the opening 28, other working machines attached to the rice transplanter can be driven by the third shaft as in the conventional case. There is no need to forcefully insert a transmission mechanism to transmit power to the working machine in the narrow space between the seedling platform and the drive case, or to bypass the lower part of the seedling platform. The power transmission path does not become long as in the case where other working machines are driven by the input shaft of the transmission case at the front of the machine body or the output shaft of the engine.

Furthermore, since the opening 28 of the drive case to which the power take-off device 33 is attached is provided on one side of the front part of the drive case 33, even if another work machine is installed in the center of the width of the machine in the vicinity, the input shaft of the drive case is By protruding toward the opening 28 side, the fuselage 1 does not become an obstacle and transmission can be easily performed through a short transmission path.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the main parts of the rice transplanter, Figure 2 is a side view of the power take-off part, Figure 3 is an exploded sectional view of the transmission part of the rice transplanter, and Figure 4 shows a part of the rice transplanter. It is a broken side view. 1... Aircraft, 8... Drive case, 10...
Seedling stand, 11... Planting body, 15... First axis, 16
... second axis, 17 ... third axis, 28 ... opening,
30...PTO gear, 33...power take-off device.

Claims (1)

[Scope of utility model claims] A transmission case 2a is connected to the front part of the machine body 1 which also serves as a transmission case, and a drive case 8 of a planting device 7 is connected to the rear part, and the planting body is driven by the power transmitted to the drive case 8. 11, an opening 28 is provided on one side of the front end of the drive case 8, the first shaft 15 is supported in the front part of the drive case 8, and the first shaft 15 is A power extraction device for a walk-behind rice transplanter, characterized in that a PTO rotating body is attached to a portion of one shaft 15 facing the opening 28, and a power extraction device 33 is attached to the opening 28.