JP2816519B2 - Multi-transplanter seat support device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet supporting apparatus for a multi-transplanter, which prevents the free end of a sheet from sagging when the body is rotated while the planted portion is lifted up.

[0002]

2. Description of the Related Art In the field of rice cultivation, by removing only seedlings and covering the rice field with a sheet of vinyl film or the like, weeds are prevented from growing and the problem of environmental pollution caused by herbicides is solved. Recently, the multi-paddy rice cultivation method has been attracting attention because simplification and labor saving of cultivation management after planting can be achieved.

[0003] In the field of upland cultivation, in particular, in the cultivation of fresh vegetables such as lettuce, Chinese cabbage, and cabbage, the heat retention of the field is enhanced to improve the germination and survival of the seeds, as well as to prevent the soil from jumping during rainfall. In order to prevent the occurrence of weeds, mulch cultivation in which the soil surface is covered with a sheet has become widespread.

[0004] In general, a transplanting machine for multi-cultivation (multi-transplanting machine) as described above generally has a planting section connected to the rear of a traveling machine so as to be able to move up and down, and a roll-shaped sheet suspended horizontally in a roll storage section. Are sequentially fed backward, and the seedlings are planted from the sheets covered with the planting rods while covering the field scene.

[0005] In such a multi-transplanter, the sheet is cut every time when the machine is rotated on a headland or the like to complete one stroke and to proceed to the next stroke during the transplanting operation in the field. It is necessary to separate the existing sheet part from the fuselage so that it does not accompany the sheet part.Therefore, it has been proposed to equip the planting part with a dedicated cutter for cutting the ground surface covering part of the sheet. Later, in order to prevent the free end of the sheet from sagging when the planting section is lifted and the body is rotated, a sheet receiving member that receives the free end of the sheet from below is being researched and developed.

[0006]

By the way, the sheet receiving member can reliably receive the cut free end of the sheet when the planting portion is lifted, and furthermore, does not interfere with the sheet laying operation in the planting operation state. It is necessary to set the position of the sheet receiving member at the lowest position of the planting portion in order to prevent the sheet receiving member from interfering with the planting. In the planting operation posture, the sheet receiving member travels under the ground simply by arranging it below the section, so that impurities such as straw waste and weeds are caught or accumulated on the sheet receiving member. It is feared that the planting operation will be adversely affected.

[0007]

SUMMARY OF THE INVENTION A seat supporting apparatus for a multi-transplanter according to the present invention is designed to solve the above-mentioned problems, and is capable of vertically moving a planting portion behind a traveling body. In a multi-transplanting machine, the seedlings are planted from the sheets covered by the planting rods while covering the field scene by sequentially feeding the roll-shaped sheets laid in the roll storage section rearward, When the planting section is in the up state, a sheet receiver that receives and supports the sheet feeding end side from below is disposed below the planting section, and the sheet receiver dives into the soil in the planting operation state. In addition, the gist of the present invention is that the tip end locus of the planting rod is located above the bottom dead center.

[0008]

According to the present invention, at the time of planting operation, the sheet receiver advances while sunk in the soil, but the sheet receiver is located above the bottom dead center of the tip turning locus of the planting rod. Because it has been made, the amount of sheet receiver sunk from the ground surface is reduced,
The accumulation and catching of foreign substances such as straw waste and weeds on the sheet receiver can be minimized. In addition, since the height of the sheet receiver above the ground when the planting section is lifted up is increased, it is advantageous in the case where the airplane circulates, crosses over ridges, and incorporates the volume into the transport vehicle.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The construction of the present invention will be described with reference to one embodiment shown in the drawings. In the drawings, a five-row rice transplanter (multi rice transplanter) A having a multi-device as a multi-transplanter is illustrated. I have. Reference numeral 1 denotes a traveling body (the main body of a riding rice transplanter) having a front wheel 2 and a rear wheel 3 and having an engine 4 at a front portion and a driver's seat S near a rear portion, and an upper link 5 and a lower link 6 at the rear thereof. The planting portion P is vertically and detachably connected via an elevating link 7 with a hitch H and an extension frame 8. The planting section P is rotatably connected to the extension frame 8 via a fulcrum shaft (not shown) so that the planting section P runs following a field scene (field surface) regardless of the inclination of the machine. Reference numeral 9 denotes a universal joint shaft that connects the PTO shaft on the machine 1 side and the input shaft of the drive case 10 on the planting portion P side.

In addition to the drive case 10, the planting portion P has a front-back-to-back low planting stand 11, a rotary planting rod 12, and a plurality of hollow shafts each of which is rotatably traversed back and forth. The planting part P is composed of a roller float 13 or the like made of a cylindrical body.
And a multi-device is integrally incorporated.

The roller float 13 rolls a sheet covered in a field scene, and is suspended at the planting portion P via a plurality of bogies so as to be vertically movable. That is, the roller float 13 has the rear end side of the drive case 1
Float support frame 14 pivotably connected to zero
Triangular bearing 16 pivotally supported by a horizontal shaft 15 at the tip of
Is rotatably supported via a shaft 17. The left and right sides of the front end of the frame 14 corresponding to the horizontal shaft 15 (the swing fulcrum of the bearing 16) are supported by the planting portion P via a spring 18 made of a coil spring so as to be vertically adjustable.

Reference numeral 19 denotes a locking lever. The locking lever 19 is located at the upper portion on the back side of the seedling mounting table 11 and has five planting rods 12 (right and left on both sides of the planter case 12a. Are arranged in the planter case 12a at an appropriate distance in the left and right directions, and each of the locking levers 19 is connected to the planting clutch portion K and the seedling intermittent feeding mechanism M via wires. .

Reference numeral 20 denotes a cylindrical duct-shaped roll storage portion for storing and supporting a sheet (hereinafter, also simply referred to as a roll) b wound in a roll shape from the side so as to be freely taken in and out, and positioned at the lower front side of the planting portion P. It is attached to the planting part P. The replacement (replenishment) of the roll b is performed by opening either the left or right lid 20a with the planting portion P raised. The roll b can be easily replaced with a plurality of rolls having different lengths in order to cope with the work of stopping the roll. The sheet b may be a normal resin film used for mulch cultivation.
Recycled paper (for example, cardboard or the like dissolved in water and added with starch paste and dissolved in muddy water on the rice field after 40 to 50 days) is used.

Reference numeral 21 denotes a sheet receiving member for receiving and supporting the sheet b from below when the planting portion P is in an elevated state (during machine rotation, etc.).
Is extended rearward, bypassing the lower part of the vehicle. The sheet receivers 21 are formed of rods or plates having an inverted letter shape in a side view, and a plurality of the sheet receivers 21 are arranged at appropriate intervals in the planting width direction.

Incidentally, the sheet receiver 21 is configured so as to be immersed in the soil in the planting operation state and to be positioned above the bottom dead center U of the tip turning locus Q of the planting rod 12. It is preferable that the sheet receiver 21 be brought as close as possible to the ground surface within a range that does not adversely affect the sheet pressure reducing action of the sheet pressure reducing roller 35.

Each of the sheet receivers 21 is configured to be switchable between an operating position in which a substantially horizontal position is held with the front portion as a fulcrum and an inclined position inclining downward by operating the lever 22. That is, the base end of the lever 22 is fixed to a cam shaft 24 which is rotatably suspended between left and right holders 23 for mounting the roll storage unit 20. A cam 26 is fixedly provided, and an arm 24 a is fixed to an end of the cam shaft 24. On the other hand, a horizontal shaft 2 which is located behind the cam shaft 24 and has the base end side of each sheet receiver 21 fixed between the left and right holders 23.
5 is rotatably supported, and an L-shaped plate 2 is attached to the free end of an arm 25a fixed to the end of the horizontal shaft 25.
6 'is pivotally connected, and a rod 27 pivotally connected to the free end side of the arm 24a is inserted into the bent portion 26'a of the plate 26' so as to be able to advance and retreat. In the planting action posture in which the sheet receiver 21 is in a substantially horizontal posture, the sheet receiver 21 is lowered by exceeding the fulcrum of the compression spring f, and the upper limit stopper d. The rise of the sheet receiver 21 is regulated. e is a lower limit stopper for the sheet receiver 21. The guide rollers 25, 25 are provided for facilitating the storing operation of the roll b, and are provided so as to be switchable between an operation position protruding into the roll storage portion 20 and a non-operation position retracted downward. Operation is performed by the lever 22 and the cam 26.
Is rotated.

Reference numeral 29 denotes a sheet cutting cutter which is movable up and down. The cutter 29 is fixed to the rear end of the arm 30 over the entire width of the sheet b laid, and is operated by an operation lever 31 provided near the driver's seat. Rotating downward with the support shaft 30a as a fulcrum, the sheet b covered on the rice field surface is cut while being grounded on the rice field surface.

On both the left and right sides of the traveling machine body 1, preliminary roll supporting portions 32 for the sheet b are arranged in the front-rear direction along the traveling machine body 1, and the left and right preliminary roll supporting portions 32 center on a support shaft 33, respectively. And is configured to be rotatable outward.

Reference numeral 34 denotes a sliding plate made of an elastic plate such as a synthetic resin or a rubber plate, and is supported on the lower part of the roll housing 20 so as to be rotatable vertically and detachably so as to cover the lower surface of the roller float 13. Thus, in a field where no multi is required, by mounting the sliding body 34, the ground surface can be leveled and the roller float 13 can be protected.

Reference numeral 35 denotes a pressure-reducing roller for relieving the side end of the sheet b coated on the field scene. The pressure-reducing roller is disposed near the outside of the outermost planting rod 12 and is disposed in a left-right distribution manner.

Numeral 36 denotes an arc-shaped rice field inclination detection sensor linked to a potentiometer 37. The rice field inclination detection sensor 36 and the potentiometer 37
And the right and left outermost planting rods 12, which are separately disposed one by one on the left and right respectively, thereby detecting the degree of inclination of the planting portion P in the left and right directions and through a control unit (not shown). Planting part P
Is controlled so as to have an appropriate planting posture.

In the above-described configuration, the planting operation is started in a state in which the sheet end is pulled out from the roll storage unit 20 backward, sandwiched between the roller float 13 and the pressure-reducing roller 35, and the sheet free end is fixed to the field. Then, as the machine body 1 advances, the sheet b is sequentially fed from the roll storage unit 34, is rolled by the roller float 13 and is brought into close contact with the rice field, and then the seedlings are placed on the sheet b by the subsequent planting rod 12. Planted.

When the body 1 is rotated during the planting operation, the cutter 29 is rotated downward by operating the lever 31 from the driver's seat S position. It is cut over the entire width while remaining in contact with the rice field at the rear position.

After cutting the sheet b, when the planting section P is raised to rotate the machine, the sheet receiving body 21 also rises integrally with the planting section P. Body 2
By 1, it is received and supported in a substantially horizontal deployment state. Therefore, while cutting the sheet b behind the planting portion P, the free end side of the sheet b does not hang down and drag in the mud when the aircraft circulates, so that the sheet b may be biased to one side. There is no possibility that it will be twisted and hinder the planting work in the next step.

After the aircraft has been circulated, the planting section P is again lowered and grounded to perform planting in the next step. However, when the planting section P is grounded, the sheet receiving member 21 is moved to the planting operation position where it has sunk in the mud. And the free end side of the sheet b is pressed against the rice paddle by the roller float 13, so that the sheet b is manually pulled out to a predetermined position (the position pressed by the float or the like) every time the next process is performed as in the conventional case. There is no need to bother and set, and the planting operation in the next process can be started as it is.

At the time of the planting operation, the sheet receiver 21 moves forward while sunk into the soil, but the sheet receiver 21 is moved above the bottom dead center U of the tip turning locus Q of the planting rod 12. Since the sheet receiver 21 is located, the amount of the sheet receiver 21 sneaking into the ground from the ground surface is reduced, and accumulation and catching of foreign substances such as straw chips and weeds on the sheet receiver 21 are suppressed as much as possible. In addition, since the height of the sheet receiver 21 above the ground when the planting section P is lifted up is increased, it is advantageous when the vehicle circulates, crosses over ridges, and incorporates the volume into a transport vehicle.

In the present invention, since recycled paper is used as the sheet b, the recycled paper dissolves and dissolves in mud 40 to 50 days after transplantation, so that the conventional cultivation technique can be used. Therefore, the troublesome work of sheet recovery is not required, and labor saving of mulch cultivation and reuse of natural resources are achieved.

[0028]

Since the present invention is configured as described above,
After the cutting of the sheet, the free end side of the sheet is received and supported by the sheet receiver when the machine circulates by raising the planting section, so that the free end side of the sheet hangs down on the field scene and becomes covered with mud or left and right. The inconvenience of being biased to one side or twisting is eliminated, and the sheet feeding operation in the next step can be performed smoothly and reliably. In addition, in the planting operation state, since the amount of the sheet receiver sunk from the ground surface is reduced, it is possible to minimize the trapping or accumulation of foreign substances such as straw waste and weeds on the sheet receiver, The height above the ground when the planting section is lifted up increases, which is advantageous when the airframe circulates, crosses over ridges, or is loaded onto a transport vehicle.

[Brief description of the drawings]

FIG. 1 is a side view of a multi-transplanter equipped with the present invention.

FIG. 2 is a plan view of a multi-transplanter equipped with the present invention.

FIG. 3 is a perspective view of a sheet receiver attaching portion.

FIG. 4 is a side view of a sheet receiver attaching portion.

FIG. 5 is a plan view of a cam portion for operating a sheet receiver.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Traveling body 12 Planting rod 13 Roller float 20 Roll storage part 21 Sheet receiver 29 Sheet cutting cutter 35 Sheet pressure reduction roller A Multi rice transplanter P Planting part Q Tip rotation locus of planting rod U Planting rod tip turning Bottom dead center of motion locus b Sheet (roll)

Claims (1)

(57) [Claims] 1. A planting section is connected to the rear of a traveling machine so as to be able to move up and down, and a roll-shaped sheet laid on a roll storage section is sequentially fed back to cover a field scene while covering a seedling with a planting rod. In the multi-transplanter configured to be implanted from above the sheet, a sheet receiver for receiving and supporting the feeding end side of the sheet from below when the implanted portion is in the raised state is disposed below the implanted portion. And a seat for a multi-transplanter, wherein the sheet receiver is submerged in the soil in the planting operation state, and is located above the bottom dead center of the tip of the planting rod. Support device.