JP3133650B2 - Rice transplanter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice transplanter configured to cultivate a seedling in a cultivated portion while partially cultivating a portion to be planted in a field not subjected to a scraping treatment with a small width.

[0002]

2. Description of the Related Art Conventionally, as a rice transplanter that performs planting while partially tilling, a structure in which a partial tilling mechanism is mounted on an elevating link mechanism of a traveling vehicle body and a seedling planting device is connected to a rear portion thereof has been proposed. .

[0003]

According to the above configuration, it is necessary to make a special specification so that the partial tilling mechanism and the seedling planting device can be connected to each other, and the seedling planting device is directly connected to the lifting link mechanism. When ordinary rice planting is performed in a field that has been subjected to the scraping treatment, the connection structure of the seedling planting apparatus must be modified. It is also conceivable to attach the seedling planting device to the lifting link mechanism and attach a partial tilling mechanism to the seedling planting device. However, it is expected that the installation of the partial tilling mechanism will cause the seedling planting device to become insufficient in strength. In addition, it is necessary to reinforce the seedling planting device with various reinforcing members for mounting the partial tilling mechanism, and the seedling planting device itself may have a complicated structure. The present invention has been made in view of such a point, and the mounting of the partial tilling mechanism can be reliably and easily performed, and the specification can be easily changed to a normal planting operation after removing the partial tilling mechanism. The purpose is to provide rice transplanters.

[0004]

In order to achieve the above object, the present invention has the following arrangement. The partial cultivated rice planting machine according to the first aspect of the present invention is provided with a main frame extending laterally to a seedling planting device connected to a rear portion of a traveling vehicle body via an elevating link mechanism. A partial tilling mechanism in which a planting case is attached, and a tilling claw is attached to a horizontally-rotated drive shaft at an interval of planting strips is provided at a front portion of a seedling planting device, and a support member that connects the rotary drive shaft to the main frame. It is characterized by being rotatably supported on the

[0005] According to this configuration, the seedling planting apparatus itself has a high strength provided with a dedicated main frame, and there is no need to particularly consider reinforcement due to insufficient strength, and the partial tilling mechanism is utilized using this main frame. It can be easily supported. Also, the partial tilling mechanism can be easily removed, and the specifications for ordinary rice planting work without partial tilling can be easily obtained.

A rice transplanter according to a second aspect of the present invention is the rice transplanter according to the first aspect, wherein the planting case and the supporting member are connected and supported at the same portion in the horizontal direction of the main frame. Features.

[0007] According to this structure, by reinforcing a predetermined portion in the horizontal direction of the main frame, it is possible to reinforce the mounting of both the planting case and the support member. In this case, the number of places where the main frame is reinforced is reduced as compared with the case where the parts are attached to different parts and the respective parts are reinforced.

[0008]

Therefore, according to the first aspect of the present invention, the partial tilling mechanism can be easily mounted, and the specification can be easily changed to a normal planting operation after the partial tilling mechanism is removed. A rice transplanter could be configured.

Further, according to the invention of claim 2, according to claim 1,
In addition to the effects of the invention, the number of places where the main frame is reinforced can be reduced, which is effective in reducing the weight of the main frame and, in turn, the weight of the entire seedling planting apparatus.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a rice transplanter according to the present invention will be described below with reference to the drawings. As shown in FIG.
In this rice transplanter, an eight-row seedling planting device 4 is connected to a rear portion of a riding-type traveling vehicle body 1 via a lifting link mechanism 3 driven by a hydraulic cylinder 2. A fertilizer device 5 for burying granular fertilizer beside the planted seedlings for each row is installed, and a partial tilling mechanism 6 for partially cultivating a portion to be planted in advance is provided in front of the seedling planting device 4. It has a structure.

The seedling planting device 4 comprises a seedling rest 7 and a seedling rest 7 which are reciprocally moved sideways at a constant stroke and have a forwardly inclined posture.
A vertical feed belt 8 that feeds the seedlings placed downwards and a seedling that is cut out by a single line from an outlet formed in a sliding rail 9 that guides the lower end of a seedling rest 7 and is planted in a field. , A center float 11a for leveling a planting field scene for two central lines, a pair of left and right side floats 11b for leveling a planting field scene for three horizontal lines, and the like.

More specifically, a main frame 13 made of a sheet metal, which is formed in a rectangular cylindrical shape, is horizontally and horizontally connected to a lower portion of a connection frame 12 connected to a rear end of the lifting link mechanism 3. A planting mission case 14 is connected and fixed to the center of the right and left direction of 13, and four planting cases 15 having a pair of left and right planting mechanisms 10 are connected to the main frame 13 in a cantilevered manner.

As shown in FIG. 3 and FIG.
At the rear of the mission case 16 deployed at the rear of
A first power take-off shaft 17 for planting that rotates at a speed synchronized with the running speed, and a second power take-out shaft 18 that rotates at a constant speed without being synchronized with the running speed are provided up and down. The power taken out from the plant 17 is transmitted to the planting mission case 14 via the first transmission shaft 19, and this power is transmitted to the lateral feed mechanism and the vertical feed belt 8 of the seedling rest 7 and the planting mission case 14. The power taken out of the plant is transmitted to each planting case 15 via the lateral transmission shaft 20.

As shown in FIGS. 4 to 6, the partial tilling mechanism 6 is configured such that a tilling claw 22 is arranged on a rotary drive shaft 21 disposed horizontally and horizontally so as to be located in front of each planting mechanism 10. The rotation drive shaft 21 is connected to the center bevel case 23 in an interlocking manner, and an input shaft 23 a protruding rearward from the bevel case 23 is connected via a chain 24 and a transmission shaft 25. And is connected to the auxiliary power take-out shaft 18 in an interlocked manner.

The rotary drive shaft 21 is rotatably supported at the front end of a supporting member 26 extending forward from the main frame 11 at both ends and an intermediate portion thereof. 11 and is supported. Here, the two intermediate support members 26 are connected to the main frame 11 at the front side of the portion where the two center planting cases 14 are connected. In the connection portion of the planting case 14, the main frame 11
A reinforcing member 27 is attached to the inside, and the support member 26 at the center is connected with high strength by using the reinforced portion, and the rotation drive shaft 21 is driven by the driving of the tilling claw 22. The support member 26 at the center at two places can sufficiently withstand a load whose center is to be bent upward. A guard member 28 for protecting the end of the slide rail 9 extends from the end of the main frame 11, and the base reinforcing member 2 of the guard member 28.
9 are connected to the support members 26 at both ends.

Tilling claw 22 in the partial tillage mechanism 6
Is connected to the side surface of the disk 30 attached to the rotary drive shaft 21 via the bracket 31, and the tilling depth is adjusted by changing the attachment position in the claw longitudinal direction and adjusting the claw protrusion amount. Is available.
In addition, a large-diameter drum 32 is concentrically interposed between the respective tillage claw attachment portions to prevent the straw, weeds, and the like existing in the field scene from winding around. As shown in FIGS. 7 and 8, the end of the drum 32 is engaged with the unevenness formed on the periphery of the disk 30, and the drum 32 is
It is configured to rotate integrally with the drum and to eliminate the gap between the drums.

FIG. 3 schematically shows a transmission structure in the transmission case 16. Power from an engine 40 mounted on the front part of the traveling vehicle body 1 is input to a pump shaft 42 of a hydrostatic continuously variable transmission (HST) 41, a speed change output of which is taken out from a motor shaft 43, and an auxiliary gear transmission mechanism 44.
The transmission is transmitted to the differential device 46 of the rear wheel 45 after shifting to two high and low stages (low speed is for planting and high speed is for traveling). The power branched from the transmission system to the rear wheels 45 is transmitted from the lower front part of the transmission case 16 via the transmission shaft 47 to the front wheels 4.
8.

The output from the motor shaft 43 is shifted to six speeds by the inter-stock transmission mechanism 49, and then the torque limiter 5
0, and the first power take-off shaft 1 via the clutch 51
7 is transmitted to the seedling planting device 4 via the first transmission shaft 19. A part of the power input to the pump shaft 42 is transmitted to the second power take-out shaft 18 via the clutch 52 after the gear speed is reduced, and the engine is driven regardless of the speed of the hydrostatic continuously variable transmission 41. Power at a constant rotation speed determined by the rotation speed is transmitted to the partial tillage mechanism 6 via the second transmission shaft 25.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view of a rice transplanter.

FIG. 2 is a side view of the seedling planting apparatus.

FIG. 3 is a schematic view showing the internal structure of a mission case.

FIG. 4 is a plan view showing a seedling planting apparatus and a partial tillage mechanism;

FIG. 5 is a side view showing an input unit of the partial tilling mechanism.

FIG. 6 is a plan view showing a support portion of the partial tillage mechanism.

FIG. 7 is an exploded perspective view showing a tilling claw attachment portion of the partial tilling mechanism.

FIG. 8 is a plan view showing a part of a partial tillage mechanism.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Running vehicle body 3 Elevating link mechanism 4 Seedling planting device 6 Partial tilling mechanism 13 Main frame 14 Planting mission case 15 Planting case 21 Rotating drive shaft 22 Tilling claw 26 Supporting member

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-344808 (JP, A) JP-A-7-79621 (JP, A) JP-A-7-107820 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) A01C 11/02 A01B 49/04

Claims (2)

(57) [Claims] A seedling planting device (4) connected to a rear portion of a traveling vehicle body (1) via an elevating link mechanism (3) is provided with a main frame (13) extending in a lateral direction of the body, and the main frame (13). A partial tilling mechanism (6) having a transmission mission case (14) and a plurality of planting cases (15) attached thereto, and a tilling claw (22) attached to a horizontally mounted rotary drive shaft (21) at planting strip intervals is planted. A rice transplanter disposed at the front of the device (4), wherein the rotary drive shaft (21) is rotatably supported on a support member (26) connected to the main frame (13). 2. The rice transplanter according to claim 1, wherein the planting case and the support member are connected and supported at the same position in the lateral direction of the main frame. .