JPH07147846A - Apparatus for cutting mulch sheet of mulch rice transplanter - Google Patents

Abstract

PURPOSE:To smooth planting operations near a levee and a butt by installing a cutting mechanism for a mulch sheet such as paper laid on a paddy field surface in the front of a mulch rice transplanter for planting seedlings while laying the mulch sheet. CONSTITUTION:This apparatus for cutting a mulch sheet is provided by installing a cutting mechanism (C) for a mulch sheet (S) laid in the former step of planting operations in the front of a mobile machine body (A) and a holding mechanism capable of lifting of lowering the cutting mechanism (C) interlocking with the lifting and lowering of a planting part (B) and holding the cutting mechanism (C) at a lifted position. Thereby, the cutting mechanism is made to lightly perform the lifting operation thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-rice transplanter for planting seedlings while laying a multi-sheet such as paper on the rice field.

[0002]

2. Description of the Related Art Conventionally, as a multi-rice transplanter, Japanese Patent Laid-Open No. 5-2 is known.
Japanese Patent No. 76839 is known.

[0003]

When the above-mentioned planting work is performed, the number of planting lines of the rice transplanter does not match the number of remaining planting work when transplanting the final planting process on the ridge. At the time, an operation generally called ridge treatment is performed, that is, the planting of several rows is stopped and the number of planting rows is adjusted in the previous process, but it is difficult to adjust the ridge treatment for paper sheets. A surplus will result as a result of the entire number of lines being laid. Therefore, when the final planting process is transplanted, the traveling wheels step on the remaining portion of the paper sheet laid in the previous step, and in particular, the front wheel causes the harmful effect of dragging the paper sheet into the paddy field. There was a risk that the paper sheet containing the planted seedlings in the process was pulled and moved, disturbing the planted seedlings.

Further, in the headland portion, it is very difficult to align the positions of the end portions of the paper sheet at the planting start portion and the planting end portion in a horizontal line, and the paper sheet end portion is inevitably inevitable. . Therefore, when planting the headland, the same problem as described above occurs, and there is a problem that the running wheels may drag the paper and disturb the seedlings that have already been planted.

[0005]

In order to solve the above-mentioned problems, the present invention is a cutting for cutting a multi-seat laid on a rice field in front of a traveling machine body or on a planned passage line of traveling wheels or outside thereof. A mechanism is provided, an interlocking mechanism is provided for moving the cutting mechanism up and down in conjunction with the elevation of the planting section, and a holding mechanism for holding the cutting mechanism in the raised position.

[0006]

The cutting device is held in the raised position during normal planting work. Then, as described above, during the final planting process or headland planting process, when there is a risk of stepping on the paper sheet laid in the previous process with wheels, the cutting device descends and touches the paddy field to cut the paper sheet. To Then,
The paper sheet is divided into left and right by the cutting device at the front part of the traveling wheel as the traveling body advances, so the traveling wheel passes through the dividing position, and the traveling wheel does not drag the sheet of paper in the previous stroke. Planting work can be done without disturbing the planted seedlings. Further, since the cutting mechanism can be raised and retracted and held at the raised position by the holding mechanism in association with the raising of the planting portion during traveling, the raising operation of the cutting mechanism can be performed lightly and normal planting work can be performed smoothly.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference numeral A is a traveling machine body having traveling wheels such as front wheels 1 and rear wheels 2, a steering handlebar 3 and a driver's seat 4 are provided on the upper part of the traveling machine body A, and a hydraulic cylinder mechanism is provided behind the traveling machine body A. The planting part B is attached via an elevating link mechanism 6 which is vertically driven by 5. The planting section B is equipped with a seedling placing table 7 and a planting mechanism 8, and below the seedling placing table 7 a roll case 9 for accommodating a multi-sheet roll SR of paper, vinyl or the like and a fed multi. A front roller 10, a rear roller 11, and an edge pressing roller 12 that lay the sheet S by pressing it against the rice field are provided. Reference numeral 13 is a rod-shaped multi-seat supporting member that prevents the multi-sheet S from hanging down when the planting part B is raised during traveling of the airframe,
It is mounted on the roll case 9 side, is located between the seedling planting strips, extends rearward, and is provided in a plurality in the lateral direction of the planting part B. Reference numeral 14 denotes a cutter mechanism which is attached to the side of the planting section B and cuts the multi-sheet S at the end of planting. The cutter mechanism 14 is normally held in standby at the raised position indicated by the solid line and the driver's seat at the time of cutting action. The multi-sheet S is cut by being moved to the descending position shown by the chain line by appropriately remote-controlling from 4.

A cutting mechanism C for cutting a surplus portion of the multi-sheet S laid on the rice field in the front process in the front part of the traveling machine body A.
Is provided. The cutting mechanism C is supported so as to be able to roll left and right around a longitudinal axis 15-1 pivotally supported on the front part of the traveling body A, and is also supported so as to be vertically rotatable around the axis of the horizontal shaft 15. There is. Arms 1 on both sides of the horizontal shaft 15
6 is attached, and a rotary shaft 17 is rotatably mounted on the tip ends of the left and right arms 16, 16. Reference numerals 18 and 18 denote cutting blades mounted on both sides of the rotary shaft 17, and the cutting blades 18 are formed in a circular saw shape, and are arranged to pass through traveling wheels such as front wheels 1 and rear wheels 2 in plan view. The multi-seat support member 13 located outside of this is located in front of the expected passage position line. 19 and 19 are the rotary shaft 1
A sled body is supported on both sides of the slidable body 7, and the cutting blade 18 is projected downward through a long hole 20 formed in the sled body 19. Therefore, the cutting blade 18 is guided by the sled body 19 which slides on the upper surface of the laid multi-sheet S, and the multi-sheet S is reliably pressed by the sled body 19 without any slack, so that the cutting blade 18 ensures the multi-sheet S. Cut and separated.

Reference numeral 21 denotes a spring stretched between the base end of the arm 16 and the side of the traveling body A. The spring 21 elastically presses the cutting blade 18 and the sled body 19 toward the paddy field to raise and lower the paddy field. It conforms and moves up and down to ensure the cutting action of the multi-sheet S. One end of the wire 22 is locked to the intermediate portion of the arm 16, and the other end of the wire 22 is connected to the hydraulic cylinder mechanism 5. With this connection configuration, when the hydraulic cylinder mechanism 5 extends in the direction of raising the planting part B, the wire 22 is pulled, the arm 16 is pulled up against the elastic force of the spring 21, and the cutting blade 18 and the sled body 19 are pulled from the field. Ascend to the elevated position.
On the contrary, when the hydraulic cylinder mechanism 5 is contracted in the direction of lowering the planting portion B, the wire 22 is loosened, and the arm 16 is lowered by the elasticity of the spring 21 and the own weight of the arm 16, the cutting blade 18, the sled body 19 and the like. The sled body 19 contacts the upper surface of the multi-sheet S laid in the previous step and is prevented from descending, and at the same time, the multi-sheet S is cut by the cutting blade 18. Thus, the cutting mechanism C including the cutting blade 18 and the like is configured to move up and down in association with the elevation of the planting section B.

Next, the holding mechanism D for holding the cutting mechanism C in the raised position will be described. 23 is the arm 16
Is a lock pin capable of supporting the lower part of the lock pin 23. The lock pin 23 is constantly urged in a protruding direction by a spring 24, and is connected to an operation lever 26 via an operation wire 25. The operation lever 26 is configured to be switchable between a lock operation position X and a release operation position Y of the operation guide 24. Then, when the operation lever 26 is set to the lock operation position X, the locking pin 23 is biased by the spring 24 and comes into the ascending / descending operation locus of the arm 16 to support the lower part of the arm 16 so that the disconnection can be achieved. It becomes possible to hold the mechanism C in the raised position. Further, when the operation lever 26 is set to the release operation position Y, the locking pin 2
3 compresses the spring 24 and is pulled by the operating wire 25 to be pulled out of the ascending / descending operation locus of the arm 16, allowing the arm 16 to descend, and bringing the cutting mechanism C to the cutting action position in the lowered state. Will be possible.

During normal planting work, the operating lever 26 is used.
Is set to the lock operation position X and the cutting mechanism C is held in the raised position. As the traveling machine body A advances, the multi-sheet roll SR housed in the roll case 9 includes the front and rear rollers 10, 11 and the end pressing roller 12 and the sheet supporting rod 1.
3 which is fed out through the space above and below 3 and is laid on the rice field, and the seedlings on the seedling stand 7 are scraped off by the planting mechanism 8 one by one to break through the laid multi-sheet S to be planted on the rice field. Is. When reaching the headland, the traveling machine body A is stopped from running and planting work, and then the cutter mechanism 14 is moved downward to cut out the multi-sheet S fed out. Then, when the planting portion B is raised, the multi-sheet S fed below the front and rear rollers 10, 11 and the end pressing roller 12 is supported by the multi-sheet supporting member 13 and is prevented from hanging down. Supported by. However, when the traveling aircraft body A is swiveled to the headland while the planting section is raised and the planting section B is lowered to the ground at the planting restart position, the unwound multi-seat S is grounded to the rice field and Since the rollers 10 and 11 and the end pressing roller 12 are pressed, the traveling machine body A can be moved forward and the planting work can be restarted. In this way, with the cutting mechanism C held in the raised position, the same planting work as in the conventional case is performed.

When the surplus portion of the multi-sheet S laid in the previous step is left on the paddy field in the step of planting the edge or headland (for example, in the embodiment of FIG. At the time of planting work in front of the ridge, it shows the case of ridge treatment where only two rows are planted and three rows are stopped to stop the row, so that the unplanted portion for three rows is left in the previous step. The final stroke is adjusted so that 5 rows can be planted.Therefore, the multi-sheet S is laid in a state where there is a remaining portion on the paddy field corresponding to 3 rows planting.) The cutting mechanism C is set to the operating position Y, and the cutting mechanism C is switched to the lowered cutting action position to start the planting work. Then, the surplus portion of the multi-sheet S laid on the rice field is cut and separated by the cutting blade 18 of the cutting mechanism C on the planned passage line of the traveling wheels such as the front wheels 1 and the rear wheels 2, so that the traveling wheels thereafter pass. Even if it is done, the planting work can be performed without dragging the multi-sheet S on the planted seedling side to the paddy field and without damaging the planted seedlings. Further, when the multi-sheet S is cut by the cutting blade 18, the portions of the multi-sheet S on both sides of the cutting blade 18 are pressed by the sled body 19, so that the cutting action can be surely performed.

When the multi-sheet S is cut by the cutting blade 18, the portions of the multi-sheet S on both sides of the cutting blade 18 are slid.
Since it is pressed by 9, the cutting action can be surely performed. Further, since the cutting mechanism C can freely roll around the axis 15-1 in the front-rear direction, even if the traveling machine body A rolls left and right due to the unevenness of the tiller, the multi-seat S smoothly follows the left and right upper surfaces of the multi-seat S. Can be disconnected. Although the cutting blades 18, 18 ... Are provided on the single rotary shaft 17 in the embodiment of the present invention, the rotary shaft 17 is divided into the left and right, and the left and right cutting blades 18, 18 are mounted respectively. Alternatively, the cutting mechanisms may be independently provided on the left and right sides so that each of the cutting mechanisms can be independently moved up and down and held in the raised position. In that case, depending on the width of the remaining portion of the multi-seat S. The cutting mechanism on only one side can be used, and the planting work can be performed efficiently.

[0014]

As described above, according to the present invention, the multi-work and the planting work can be performed at the same time, and the cutting mechanism is used to smoothly plant the planted seedlings even at the ridge and the headland portion. Can be attached. Further, the vertical movement of the cutting mechanism is interlocked with the raising and lowering of the planting part to make the raising operation of the cutting mechanism light, and the holding of the cutting mechanism at the raised position also enables smooth normal planting work.

[Brief description of drawings]

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

FIG. 2 is an enlarged side view of a main part of a multi-rice transplanter.

FIG. 3 is a schematic plan view of a multi-rice transplanter.

FIG. 4 is a schematic explanatory view of a holding mechanism that holds the cutting mechanism in a raised position.

[Explanation of symbols]

 A traveling machine body 5 hydraulic cylinder mechanism B planting section 9 roll case S multi-sheet C cutting mechanism 18 cutting blade 19 sled body D holding mechanism 26 operation lever

Claims (1)

[Claims] 1. A rice transplanter in which a planting section provided with a multi-sheet feeding and laying mechanism and a seedling planting mechanism is connected to the rear of a traveling machine having front and rear traveling wheels so as to be vertically movable, and in front of the traveling machine. A cutting mechanism for cutting the multi-sheet laid on the rice field located on or outside the planned passage line of the traveling wheels is provided, and an interlocking mechanism for moving the cutting mechanism up and down in conjunction with the elevation of the planting section is provided. A multi-sheet cutting device for a multi-rice transplanter, which is provided with a holding mechanism for holding the cutting mechanism in a raised position.