JP3200487B2 - Seeding removal structure of 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 seedling take-out port provided on a guide rail supporting a lower end of a seedling placing stand. The present invention relates to a structure of a seedling take-out portion of a rice transplanter configured as described above.

[0002]

2. Description of the Related Art In a rice transplanter, for example, an actual flatbed 1-7 is used.
As disclosed in Japanese Unexamined Patent Publication No. 9917, the seedling take-out opening of the guide rail (16 in FIG. 1 and FIG.
A pair of left and right lateral guide plates (17A in FIGS. 1 and 2 of the above-mentioned publication) are fixed in parallel in a downward cantilever manner on the left and right side portions at the lower part of A), and planted at the lower part of the seedling outlet. There is a nail in which a middle guide plate (17B in FIGS. 1 and 2 of the above-mentioned publication) is fixed in a downward cantilever shape at a tip side portion of the nail. As a result, the planting claws pass through the seedling outlet and pinch and take out the seedlings, and the tips of the planting claws and the seedlings pass between the left and right lateral guide plates and the middle guide plate, so that the seedlings are planted in the lower field. That is, during the period from the removal of the seedling to the planting, the falling of the seedling from the planting nail is prevented by the left and right lateral guide plates and the middle guide plate.

[0003]

With the structure described above,
Since the left and right lateral guide plates are in a substantially rigid state and arranged in parallel with each other, the left and right lateral guide plates will be arranged slightly outside with a gap from the passage locus of the tip of the planting claw. . As described above, when there is a gap between the passing locus of the tip of the planting nail and the lateral guide plate, and the lateral guide plate is laterally separated from the tip of the planting nail and the seedling, the seedling from the planting nail may be removed. There is room for improvement in preventing spills. In addition, if there is a gap between the passing locus of the tip of the planting claw and the lateral guide plate, mud may adhere to and accumulate on the inner surface of the lateral guide plate. If the mud falls as a lump as it passes between the horizontal guide plates, there is a possibility that the mud lump may develop into a situation where seedlings are dropped from the planting nails. It is an object of the present invention to provide a structure in which a lateral guide plate and a middle guide plate are provided at a lower portion of a seedling outlet so as to sufficiently prevent a seedling from falling from a planting claw.

[0004]

The feature of the present invention resides in the following structure in the above-mentioned structure for taking out a seedling of a rice transplanter. In other words, a pair of left and right horizontal guide plates made of a vertically long flat plate-like elastic body are arranged in a downward cantilever shape in such a manner that the left and right intervals thereof are tapered toward the lower left and right portions of the seedling outlet. At the tip side of the planting claw at the lower part of the seedling outlet, there is provided a downwardly cantilevered middle guide plate that is tapered downward in front view along side edges of the left and right lateral guide plates.

[0005]

When constructed as in the present invention, for example, FIGS.
In the configuration shown in FIG. 1, if the interval between the left and right lateral guide plates 19 is set to be slightly smaller than the left and right width of the planting nail 1a, the planting nail 1a passes through the seedling outlet 16a and removes the seedling. When passing between the lateral guide plates 19, the planting claws 1a
While pushing and expanding the left and right lateral guide plates 19 in the left and right sides,
It will move downward. Thereby, the planting nail 1
While a passes between the left and right lateral guide plates 19, the left and right lateral guide plates 19 are brought into contact with and pressed against the lateral portions of the planting claws 1a and the seedlings. Seedlings do not fall off.

When the planting claws 1a pass between the left and right lateral guide plates 19, the left and right lateral guide plates 19 are pressed against the planting claws 1a, so that the planting claws 1a can be used to plant seedlings. Each time it is performed, the planting claws 1a are in a state of scraping off the mud on the inner surfaces of the left and right lateral guide plates 19. This prevents mud from adhering and accumulating on the inner surface of the lateral guide plate 19. Also, when the planting claw 1a moves downward while pushing and spreading the left and right lateral guide plates 19 in the left and right lateral direction and falls downward from the lower end of the lateral guide plates 19, the lateral guide plates 19 return to their original posture due to their own elasticity. Return to Thereby, every time the planting claw 1a carries out planting of a seedling, the left and right lateral guide plates 19 are operated to be separated from the middle guide plate 20 to the left and right, so that the left and right lateral guide plates 19 and the middle guide plate 20 are interposed. Since a state in which a wedge-shaped gap is formed and the wedge-shaped gap is closed again is repeated, the mud accumulated between the left and right lateral guide plates 19 and the middle guide plate 20 is reliably removed by this operation.

[0007]

As described above, by arranging the left and right lateral guide plates so as to contact and press the planting nail and the seedling when the planting nail passes, it is possible to sufficiently prevent the seedling from falling off the planting nail. Can be prevented, and the reliability of planting seedlings can be increased. At the same time, it is possible to prevent the mud from staying on the inner surface of the lateral guide plate and between the lateral guide plate and the middle guide plate, and also prevent the seedlings from spilling from the planting claws due to the mud, The reliability of planting seedlings can be further increased.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a planting case 2 having a pair of planting arms 1 is rotatably supported at a rear portion of a planting transmission case 3, and a ground float 5 is supported at a lower portion of the planting transmission case 3. The seedling rest 4 is supported so as to be reciprocally traversable to the right and left with respect to the planting transmission case 3, and the seedling rest 4 is moved from the seedling rest 4 as the planting case 2 rotates.
So that they take out seedlings alternately and plant them in the field.
A seedling planting device of a riding type rice transplanter is configured.

As shown in FIG. 1, a fertilizer tank 6, a feeding device 7 for feeding the fertilizer in the fertilizer tank 6 by a set amount, a drug tank 8, and a drug in the drug tank 8 are set above the planting transmission case 3. A feeding device 9 for feeding by an amount is fixedly arranged. Grooving member 10 in ground float 5
And the groove generator 11 is fixed, and the feeding device 7 for fertilizer is used.
A hose 12 is connected from the feeding device 9 for medicine to the upper surface near the lower end of the hose 12 for fertilizer. ing. The pair of planting arms 1 and the feeding device 7 for fertilizer are linked and connected by a link rod 14, and the feeding device 7 for fertilizer and the feeding device 9 for medicine are linked and connected by a transmission belt 15. ing.

With the above structure, when the planting case 2 is rotated and driven to plant seedlings as described above, the feeding devices 7, 9 for fertilizers and chemicals are driven in conjunction with the planting, and The fertilizer and chemicals fed from the feeding devices 7 and 9 join through the hoses 12 and 13 to form a groove generator 11.
Are sent into the ditch created in the field. In this case, with respect to the flow of the fertilizer in the hose 12, the state is such that the drug rides on the flow of the fertilizer from the hose 13 from the upper side, and even the drug with small particles does not stay due to the fertilizer with large particles. It is forcibly sent into the ditch of the field.

Next, a description will be given of a structure for preventing the seedlings from spilling down from the planting claws 1a at the tip of the planting arm 1 until the planting arm 1 takes out the seedlings from the seedling placing stand 4 and plants them in the field. I do. As shown in FIGS. 2 and 3, the planting claw 1a at the tip of the planting arm 1 passes through the guide rail 16 which supports the seedling rest 4 so as to be able to reciprocate and reciprocate laterally with respect to the planting transmission case 3. The seedling take-out opening 16a is cut out and formed. And the seedling outlet 16a
A support plate 17 formed by bending a plate material into an L-shape is fixed to the back surface of the guide rail 16 at both left and right lateral portions of the plant. A flat L-shaped guide plate 18 (see FIG. 2) is attached to the seedling. The take-out opening 16a is fixed vertically to the support plate 17 at both left and right lateral portions.

As shown in FIGS. 3, 4, and 5, a pair of left and right lateral guide plates 19 and one middle guide plate 20 are provided.
The lateral guide plate 19 is formed in a vertically long flat plate shape by covering the entirety of a metal core member 19a (elastic body) made of a flat plate with a rubber material 19b (elastic body). Then, a pair of left and right lateral guide plates 19 are inclined so as to be located on both left and right sides of the lower part of the seedling outlet 16a so that the left and right intervals thereof are tapered downwardly to form a downward cantilever (FIG. 3). ), And are connected to the support plate 17 by bolts 21. As shown in FIGS. 4 and 5, in the core member 19a of the lateral guide plate 19, an elongated hole 19c is opened for a bolt 21 in a bent portion at an upper end thereof, and as shown in FIG. When the plate 19 is connected to the support plate 17 by bolts 21, the distance between the left and right lateral guide plates 19 can be changed and adjusted.

On the other hand, as shown in FIG.
Numeral 0 is formed by bending a metal flat plate to form a tapered shape when viewed from the front (see FIG. 3). As shown in FIGS. 2 and 3, the upper end 20 a is connected to the guide rail 16 by a bolt 22. Have been. As a result, the middle guide plate 20 is located at the tip of the planting claw 1a below the seedling outlet 16a (see FIG. 2).
It is supported in a downward cantilever shape in a tapered shape as viewed from the front so as to be along the side edge side of 9 (see FIG. 3).

As shown in FIGS. 6 and 1, a shutter 23 is fixed to a support shaft 24 in the groove generator 11, and the shutter 23 is supported together with the support shaft 24 so as to swing up and down freely. I have. An operation arm 25 is fixed to the end of the support shaft 24 outside the groove generator 11, and a spring 26 for urging the shutter 23 to the open side, and a resistance to the movement of the shutter 23 to the open side. Giving damper 2
7 is connected to the operation arm 25. Further, there is provided a solenoid 28 capable of pressing the operation arm 25 to close the shutter 23.

As a result, when the planting raising / lowering lever 29 is operated to the planting position where the planting device performs the planting operation, FIG.
, The shutter 23 is in the open state, and the fertilizer and the chemical from the feeding devices 7 and 9
It is sent into the groove made by 1. For example, when the machine reaches the ridge and the operator operates the planting elevating lever 29 from the planting position to the ascending position, the seedling planting device stops the planting operation and performs the ascending operation. At the same time, the operation of the planting elevating lever 29 is detected by the limit switch 30, and the signal from the control device 31 causes the solenoid 28 to push the operating arm 25 to quickly close the shutter 23, and the locking mechanism The support shaft 24 is fixed by 32, and the shutter 23 maintains the closed state. When the planting elevating lever 29 is operated to the planting position in order to finish the swiveling at the ridge and resume planting, the solenoid 28 pushes the operation arm 25 again by a signal from the control device 31. As a result, the fixing action of the lock mechanism 32 is released, and the spring 2
6 and the resistance of the damper 27, the shutter 2
3 is slowly opened.

[Alternative Embodiment] The structure shown in FIG. 6 may be configured as shown in FIG. The state shown in FIG. 7 is a state where the planting elevating lever 29 is being operated to the planting position, and a state where the shutter 23 is being opened. When the planting elevating lever 29 is operated to a position other than the planting position in this state, this operation is detected by the limit switch 30 and a signal from the control device 31 outputs a signal to the solenoid type stopper 3.
3, the shutter 23 is rapidly closed by the urging force of the spring 34 (the state shown by the two-dot chain line in FIG. 7). When the planting elevating lever 29 is operated to the planting position, the motor 35 is operated by a signal from the control device 31 to operate the operating arm 36 once at a low speed, and the balance arm 37 is changed from the state of the two-dot chain line to the solid line. Then, the shutter 23 is slowly opened by the operation rod 38, and the lower end of the balance arm 37 is engaged with the stopper 33, and the shutter 23 is held at the open position.

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 seedling planting apparatus.

FIG. 2 is a side view of the vicinity of a lateral guide plate and a middle guide plate.

FIG. 3 is a rear view of the vicinity of the lateral guide plate and the middle guide plate.

FIG. 4 is a plan view showing the vicinity of a lateral guide plate and a middle guide plate.

FIG. 5 is a perspective view of a lateral guide plate and a middle guide plate.

FIG. 6 is a side view showing a structure in the vicinity of a shutter in the groove generator.

FIG. 7 is a side view showing another structure near the shutter in the groove generator.

[Description of Signs] 1a Planting claw 4 Seedling stand 16 Guide rail 16a Seedling take-out port 19 Side guide plate 20 Middle guide plate

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroshi Takao 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References JP-A-63-233713 (JP, A) 9516 (JP, U) (58) Fields surveyed (Int. Cl. ⁷ , DB name) A01C 11/02

Claims (1)

(57) [Claims] 1. A seedling outlet (16a) provided on a guide rail (16) supporting a lower end of a seedling rest (4),
A seedling extracting portion structure of a rice transplanter configured to allow a planting claw (1a) to pass through to pinch and take out a seedling, and to plant the seedling in a lower field, comprising: a right and left lower part of the seedling outlet (16a). A pair of left and right lateral guide plates (19) made of a vertically long plate-like elastic body are disposed on both sides in a downward cantilever shape so as to be inclined so that the left and right intervals thereof are tapered. On the tip side of the planting claw (1a) at the lower part of (16a), a central guide plate (20) tapering downward in a front view along the side edges of the left and right lateral guide plates (19) is provided with a downward facing piece. The structure of a rice transplanter seedling take-out part that is provided for holding.