JPH06141702A - Sheet-supporting apparatus for mulching transplanter - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To provide a seat support device for a multi-transplanter that allows a smooth and reliable sheet feeding action at the time of entering planting in the next step after traveling the machine. With the goal. [Composition] A planting section is connected to the rear of the traveling machine so as to be able to move up and down, and a roll-shaped sheet member b laid horizontally on a roll supporting section is sequentially fed out rearward to cover a field scene and cover seedlings with a planting rod. In the multi-transplanter adapted to be planted from above the sheet member b, when the roll support part is located at the lower part of the front side of the planting part and attached to the planting part, and the planting part is in a raised state. A plurality of sheet receivers 43 for receiving and supporting the sheet member b from below are provided in the planting width direction and extended backward from the front side of the planting part, bypassing the bottom of the planting part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet supporting device for a multi-transplanter.

[0002]

2. Description of the Related Art In the field of rice cultivation, by raising only seedlings and covering the rice field with a sheet member such as vinyl film, weeds are prevented from growing and the problem of environmental pollution caused by herbicides is solved. Moreover, since the cultivation management after planting can be simplified and labor saving can be achieved, recently, the multi-paddy rice cultivation method has been attracting attention.

In the field of field crops, particularly in the cultivation of fresh vegetables such as lettuce, Chinese cabbage, cabbage, etc., the heat retention of the field is enhanced to improve the germination and survival of seeds, and the soil jumps during rainfall. In order to prevent the generation of weeds, mulch cultivation in which the soil surface is covered with a sheet member is widely used.

The transplanter for multi-cultivation as described above (multi-transplanter) is generally a roll-shaped sheet in which a planting part is connected to a rear part of a traveling machine body so that the planting part can be moved up and down, and which is horizontally stretched on a roll supporting part. The members are sequentially fed out rearward and the seedlings are planted from above the covered sheet member by a planting rod while covering the field scene.

By the way, in the above-mentioned multi-transplanter, when the machine body is circulated in a headland or the like so as to finish one step and enter the next step during the work in the field, the sheet member is used each time. It is necessary to cut and separate the existing laying sheet part from the machine so that it does not accompany, but in the conventional multi-transplanter, without installing a dedicated cutter for cutting such sheet members on the machine, In many cases, a sheet member is cut using a sickle or knife. Some proposals have been made with a special cutter, but in both cases, the pressing action on the field scene by the float, pressing wheel, etc. is located above the position where the sheet member is in contact with the field scene. It is designed to cut ahead of the position.

However, if the sheet member is cut at a position above and in front of the position in contact with the field scene, the operator descends to the field each time before the next step after descending the grounding part of the planting section after the aircraft travels. It is necessary to manually pull out (feed out) the leading end side of the sheet member to at least the pressing action position of the sheet member by the float, the pressure wheel, etc., and reset it so that the positional relationship with respect to the float, the pressure wheel, etc. becomes appropriate. However, there is a problem that the work is troublesome and the work efficiency is lowered. Therefore, in order to eliminate the need for pulling out the sheet member in the next step, it is conceivable to cut the sheet member in advance with at least a step margin such as a float or a pressing ring.

[0007]

By the way, when the sheet member is cut to a longer length, the free end side of the cut sheet member hangs down and drags in the mud, and the sheet member is biased or twisted to one side when the aircraft is traveling. Or, depending on the material of the sheet member (for example, paper, etc.), if it hangs down and goes around, the entire structure will become twisted, which will hinder the planting work in the next step.

[0008]

A seat supporting device for a multi-transplanter according to the present invention was devised to solve the above-mentioned problems, and a planting portion is lifted up and down behind a traveling machine body. A multi-transplanting system in which the roll-shaped sheet members that are freely connected to each other and are horizontally stretched on the roll supporting portion are sequentially forwarded to cover the field scene and the seedlings are planted from above the coated sheet members by the planting rod. In the machine, the roll supporting portion is positioned at the lower part of the front side of the planting portion and mounted on the planting portion, and when the planting portion is in the raised state, the sheet receiving member for receiving and supporting the sheet member from below is planted. The gist is that a plurality of them are arranged in the width direction and extend backward from the front side of the planting part, bypassing the lower part of the planting part.

[0009]

[Function] During planting work, when the aircraft is traveling on a headland, etc., the cutter attachment arm is operated at the driver's seat position before the planting part is raised to move the seat member to the rear position of the planting part. Cut while still covered in the field scene. After cutting the sheet member, when raising the planting part to rotate the aircraft, the sheet receiver also rises integrally with the planting part, so the free end side of the sheet member is developed substantially horizontally by the sheet receiver. It is received and supported as it is.
After the aircraft has traveled, the planting part is again lowered and grounded for the next step of planting.When the planting part is grounded, the sheet receiver returns to the planting work position submerged in the mud and the sheet The free end side of the member is pressed against the rice field by the roller float.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described with reference to an embodiment shown in the drawings. In the drawings, a riding rice transplanter (multi transplanter) A equipped with a multi device as a multi transplanter is illustrated. 1 has a front wheel 2 and a rear wheel 3 and has an engine 4 at the front.
Is a traveling machine body (the main machine of a rice transplanter) equipped with a driver's seat S near the rear part, and the rear side of the machine body is planted with a lift link 7 with a hitch H composed of an upper link 5 and a lower link 6 and an extension frame 8. The part P is connected so as to be able to move up and down and detachably. The extension frame 8 is integrally connected to the planting portion P as shown in FIGS. 1 and 2, and the extension frame 8 is interposed so that the planting portion P is a normal riding paddy plant. It moves rearward of the machine, and a space portion a is formed in a lower portion of the rear end of the elevating link 7, and a roll support portion described later is arranged in this space portion a. . The planting section P is rotatably connected to the extension frame 8 via a fulcrum shaft 9 so that the planting section P can follow the farm scene (field surface) regardless of the inclination of the machine.
Reference numeral 10 denotes a universal joint shaft that connects the PTO shaft 1a on the main unit 1 side and the input shaft 11a of the drive case 11 on the planting section P side,
The universal joint shaft 10 is not a straight rod-shaped one in order to gain a height above ground in the middle part, but a bending shaft divided in the middle part is adopted, and the front and rear shafts 10a and 10b are located on the upper side of the space part a. Is connected to a holder 10 'fixed to the extension frame 8 via an intermediate shaft 10c rotatably supported,
The universal joint shaft 10 does not reduce the space for arranging the roll support portion, which will be described later.

By the way, the multi-transplanter A has a fertilizer tank 1 in which liquid fertilizers for shallow layer and deep layer are separately stored.
2, 13, fertilizer pumps 14, 15, suction hose 16, discharge hose 17 and soil fertilizer part (fertilizer nozzle) in upper and lower two stages
It is equipped with a fertilizer applicator B consisting of 18, 19 and the like, so that lateral fertilization can be carried out simultaneously with planting of seedlings. Of the fertilizer application nozzles 18 and 19, 18 is a shallow-layer fertilizer application nozzle, and 19 is a deep-layer fertilizer application nozzle.
In the embodiment, 8 and 19 are fixed to a roll supporting portion 30 described later via brackets 18a and 19a, respectively. The fertilizer application nozzles 18 and 19 can also be configured to be vertically adjustable and fixed.

The planting part P includes, in addition to the drive case 11, a front and rear lower seedling mounting table 20, a rotary type planting rod 21, and a plurality of roller floats 22 horizontally rotatably mounted on the front and rear respectively. (In the embodiment, two long rollers extending over the entire width of the planting are arranged at the front and rear, but the roller float 22 may be divided into left and right, or three or more rollers may be arranged at the front and rear). The multi-device is integrated in the planting section P. The roller float 22
Is a triangular bearing 27 that is vertically swingably connected to a tip of a frame 25 pivotally connected to a bracket 23 fixed to the lower surface of the drive case 11 through a pin shaft 24 in a predetermined range. Is rotatably supported by the shaft 22a. The front side of the frame 25 is connected to the fixed side of the planting section P via a bending / extending mechanism D with an ammunition C. Therefore, the frame 25 responds to changes in the ground pressure received by the roller float 22. The shaft 26 functions as a sled float of a known practice, and the shaft 26 serves as an equalizer fulcrum of the front and rear roller floats 22 and a hydraulic pressure sensing shaft of the planting part elevation automatic control mechanism. Further, the roller float 22 also serves as a pressing roller against a field scene of a sheet which will be described later.
In order to sufficiently exert buoyancy, a sealing material is provided at a sliding portion or the like with respect to the shaft 22a so that muddy water does not enter inside. Fertilizer application section 1 of the fertilizer applicator B
Nos. 8 and 19 are arranged in front of the roller float 22, and are applied to the soil prior to covering the rice field surface with the sheet member. Although not shown, the hydraulic pressure sensing may be performed by a sled-shaped dedicated member. 28
Is a sensitivity adjusting lever, 29 is a planting depth adjusting lever, and G is a connecting tool connected to a hydraulic valve (not shown).

In this embodiment, the width of the sheet member b is wider than the planting width as shown in FIG.
As the roller float 22, there is shown a structure in which two long rollers extending over the entire width of the sheet member b are arranged in the front and rear, but the roller float 22 may be divided into a plurality of left and right, or in the front-rear direction. It is also possible to arrange three or more (see FIG. 13). Further, the number, size, material and the like of the roller floats 22 can be changed as appropriate during implementation. Further, the roller float 22 can be configured to be replaceable or increase / decrease according to the field conditions or the like.

Reference numeral 30 denotes a roll supporting portion for accommodating and supporting a sheet member (hereinafter also simply referred to as a roll) b wound in a roll shape, and is located in the lower part of the front side of the planting portion P by utilizing the space portion a. It is attached to the part P. That is, the left and right roll holders 32 fixed to the pipe frame 31 which is laterally mounted on the planting portion P are extended to the vicinity of the rear wheel 3, and the sheet feeding port 33 is provided on the rear surface side on the extended end side. Further, a duct-shaped roll storage case 34 having both left and right ends opened is fixed, and the left and right open portions of the case 34 are covered with an openable roll storage opening lid 36 having a rear side as a fulcrum 35. Loading of the sheet member b into the sheet (replenishment at the start of planting work and replenishment during work) can be performed from either the left or right side of the machine body. A roll supporting shaft 37 having a sheet feeding photographing portion 37a is manually rotatably supported on the roll storage port lid 36 outwardly, and the roll b is between the left and right roll supporting shafts 37 via a core shaft b '. It is designed to be pinched elastically.

In the embodiment, the roll b is a wide one in order to cover the entire planting width in one step at the same time, and the case 34 for accommodating and supporting the roll b also corresponds to a substantially machine width. Although formed wide, the roll b and the case 3
4 may be divided into a plurality of lines. In the case of the split type, the roll storage case 34 is arranged in a stepped manner or shifted in the front and rear. Note that the sheet member b may be a normal resin film used for mulching cultivation,
In the present invention, as the sheet member b, recycled paper (for example, a cardboard or the like dissolved in water and added with starch paste is used in the range of 40 to 50).
It dissolves in the muddy water of the rice field over time).

On the other hand, a pair of front and rear guide rollers 40 are provided on the lower part of the case 34 in order to facilitate the work of storing the roll b.
Is provided so as to be switchable between an operating position protruding into the case 34 and a non-operating position retracted downward. The switching operation is performed by rotating the cam 42 with the lever 41. Reference numeral 38 denotes an arm which is supported between the left and right holders 32 so as to be vertically swingable via a support shaft 38a. A U-shaped frame 39 having an open lower surface is fixed to the swing tip side of the arm 38. On the roller shaft 4 of the guide roller 40
0a is supported and the driven roller 42 of the cam 42 is supported.
a is rotatably supported by a roller shaft 42b and a bearing 42c.

Reference numeral 43 denotes a sheet receiver that receives and supports the sheet member b from below when the planting portion P is in a raised state (when the vehicle is traveling, etc.), from the front side of the planting portion P ( In the embodiment, the lower part of the planting part P is detoured from the lower side of the roll support part 30 and extended rearward. This sheet receiver 43
Is composed of a rod-shaped body or a plate-shaped body having an inverted V shape in a side view, and a plurality of sheets are arranged at appropriate intervals in the planting width direction. It is configured so that it can be switched between an operating posture in which the side is a fulcrum and a substantially horizontal posture is maintained, and an inclined posture in which it is inclined downward. That is,
The base end of the lever 41 is fixed to a cam shaft 44 which is rotatably provided horizontally between the left and right holders 32, and the cam shaft 44 has a scraper 45 composed of a cam 42 for vertically operating the guide roller 40 and a leaf spring. The pressing cam 46 is fixed, and the arm 44a is fixed to the end portion side of the cam shaft 44. On the other hand, the horizontal shaft 4 is located at the rear of the cam shaft 44, and the base end side of each sheet receiver 43 is fixed between the left and right holders 32.
7 is rotatably supported, and an L-shaped plate 48 is provided on the free end side of an arm 47a fixed to the end of the horizontal shaft 47.
And the bent portion 48a of the plate 48
The rod 4 pivotally connected to the free end side of the arm 44a.
9, the rod 49 and the plate 48 are elastically urged in the shortening direction by the compression spring f, and the fulcrum of the compression spring f is in the planting action posture in which the seat receiver 43 is in a substantially horizontal posture. When the sheet receiver 43 is moved over, the lowering of the sheet receiver 43 is controlled, and the upper limit stopper d controls the upward movement of the sheet receiver 43 (see FIGS. 9 and 10). In this state, the cam 46 presses the end side of the scraper 45, and the tip side of the scraper facing the sheet delivery port 33 is pressed against the front surface of the roll b with a moderate force, so that the sheet member b is smoothly delivered. It is like this. e is a lower limit stopper of the sheet receiver 43. Note that the switching operation lever of the sheet receiver 43 may be separately provided.

Reference numeral 50 denotes a cutter for seat cutting which is attached to the planting portion P so as to be vertically movable around a support shaft 51. The cutter 50 has a base end operating portion 52a facing the driver's seat S. The arm 52 is fixed to the rear end of the arm 52, which has an inverted V shape in a side view and a U shape in a plan view, over the entire width of the laying of the sheet member b. Then, the proximal end operation portion 52a of the arm 52
By pushing up, the cutter 50 portion at the rear end of the arm 52 rotates downward about the support shaft 51 as a fulcrum, and thereby the sheet member b covered with the rice field is cut while being grounded to the rice field. It has become. Also, the cutter 50
Is not a single piece, but is made up of a large number of blades (8 blades in the embodiment) arranged in a row in a row in the lateral direction. Partial replacement is possible by removing the mounting bolt 50a of each blade. There is. The arm 52 is held at the position shown by the solid line in FIGS. 1 and 2 through a positioning mechanism such as a spring or a stopper (not shown) so as to position the cutter 50 at the upper retracted position except when the cutter is cut.

In the embodiment, the cutter 50 is attached to the planting portion P.
The sheet member b is cut at a position near the rear of the planting portion P, but if the sheet member b is cut while being grounded on the rice field, The location and the cutting position need not necessarily be behind the planting part P. However, it is preferable that the cutting action is performed at least at the rear position of the roller float 22. This is because in the next step after the machine travels, planting is started with the free end side of the sheet member b being pressed against the rice field by the roller float 22.

Seat members b are provided on both left and right sides of the traveling body 1.
The spare roll support portions 61 for supporting the spare rolls 60 are arranged in the front-rear direction along the traveling machine body, and the left and right spare roll support portions 61 are each configured to be rotatable outward. That is, the support frames 62 are fixed to the rear sides of the driver's seat S in a C shape in plan view with the tip side slightly bulged laterally of the machine body.
To receive and support the spare roll 60 from the front, rear, left and right, and to fulfill the guide function when the spare roll 60 is taken in and out.
A spare roll support portion 61 that rotatably supports individual guide rollers 63 is rotatably connected to the outside via a support shaft 64, and the spare roll support portion is raised with the planting portion P raised. When the roll 61 is rotated outward by about 90 degrees, the spare roll 60 supported by the spare roll support 61 is stored in the roll storage case 34 of the roll support 30 which is laterally extended to the planting part P side. It fits the mouth, and the loading work (replenishing work) of the spare roll 60 onto the roll supporting portion 30 can be easily performed by pushing the spare roll 60 from one side of the machine body. Although not shown, the preliminary roll support portion 61 is appropriately positioned by a stopper mechanism at a set position along the machine body or a roll replenishment position rotated outward.

By the way, one spare roll 60 can also be supported on the front side of the bumper 65. That is, a spare roll support portion 67 is also provided on the bumper 65 via a bracket 66, and the spare roll 60 is laterally held by a band 68 on the support portion 67. It also serves as a balance weight.

In the above embodiment, the multi-transplanter A for paddy fields (rice cultivation) has been described as an example, but the present invention can also be used for multi-cultivation in fields for transplanting seedlings of field crops into fields.
Therefore, the present invention can be applied not only to paddy fields but also to general multi-transplanters including those for field operation.

In the above structure, when starting the planting work, first, the planting part P is lifted up and the roll support part 30 and the preliminary roll support parts 61 and 67 are placed.
The sheet member (roll) b wound in a roll shape and the spare roll 60 are loaded respectively. Then, the sheet feeding camera 37a is rotated to pull out the feeding end portion side of the roll b loaded in the roll supporting portion 30 from the sheet feeding port 33 to the rear position of the roller float 22. At this time, the sheet receiving member 43 can be easily pulled out by rotating the sheet receiving body 43 downward. Next, when the sheet receiving body 43 is returned to rotate upward and the planting portion P is lowered and grounded, the sheet receiving body 43 is immersed in the mud and the roll supporting portion 30 is
The sheet member b pulled out from is pressed against the rice field by the roller float 22.

When the planting part P and the fertilizer application device B are started in this state and the work is started, the sheet members b are successively fed out from the roll supporting part 30 as the machine body 1 advances and cover the rice field (full-face mulch). The seedlings are planted from above the covered sheet member b with the planting rods 21 and the soil fertilizer 1
8 and 19 side fertilization is applied to the upper and lower two steps of the shallow and deep layers in the soil.

When the machine body is to be rotated during the above-mentioned planting work, the arm 52 can be pushed upward while holding the base end operation portion 52a of the arm 52 from the position of the driver's seat S, and the arm 52 can be centered on the support shaft 51 and the rear portion. Since the side of the cutter 50 rotates downward, the sheet member b laid on the rice field is cut by the cutter 50 over the entire width of the sheet member b laid on the rice field at a position behind the planting portion P while being in contact with the rice field. At this time, the flat surface leveled by the roller float 22 through the sheet member b serves as a cradle for the sheet member b at the time of cutting, so that the sheet member b made of recycled paper is in a wet state. Together, the cutting action is performed accurately.

After the sheet member b is cut, when the planting portion P is raised to rotate the machine body, the sheet receiver 43 also rises integrally with the planting portion P, so that the free end side of the sheet member b is The sheet receiving member 43 receives and supports the sheet receiving member 43 in a substantially horizontal expanded state (see FIGS. 2 and 5). Therefore, while the sheet member b is cut behind the planting portion P (or behind the roller float 22), the free end side of the sheet member b does not hang down and drag in the mud when the machine body travels. Therefore, the sheet member b will not be biased or twisted to one side and will not hinder the planting work in the next step.

After the aircraft has traveled, the planting portion P is again lowered and grounded to carry out the planting in the next step. When the planting portion P is grounded, the sheet receiver 43 is moved as shown in FIGS. 1 and 4. Since the free end side of the sheet member b is pressed against the rice field by the roller float 22 while returning to the planting work position submerged in the mud,
There is no need to manually pull out the sheet member b to a predetermined position (a position pressed by a float or the like) and set the sheet member b each time the next process is performed, unlike the conventional one, and the planting operation of the next process can be directly performed.

By the way, in the present invention, since the recycled paper is used as the sheet member b, the recycled paper dissolves and dissolves in the mud 40 to 50 days after the transplantation, so that the conventional cultivation technique can be used. In addition, the troublesome work of collecting sheet members is not required, and labor saving in multi-cultivation and reuse of natural resources can be achieved.

[0029]

Since the present invention is constructed as described above,
After the cutting of the sheet member, when the aircraft travels by raising the planting part, the free end side of the sheet member is received and supported by the sheet receiver, so that the free end side of the sheet member hangs down on the field scene and becomes covered with mud. The inconvenience of being bent, biased to the left or right side, or being twisted is eliminated, so that the feeding operation of the sheet member in the next step can be performed smoothly and reliably.

Further, since the free end side of the sheet member is received and supported by the sheet receiver in a non-grounded state during traveling of the machine body, the cutting point of the sheet member can be set to the rearmost position as compared with the conventional one, so that the machine body is rotated. After the operation, the troublesome work of manually pulling out the sheet member and setting the feeding end side of the sheet member at a predetermined position of the planting part when entering the next process is unnecessary, and the workability can be significantly improved. it can.

Further, in the structure in which the sheet receiver can be switched between a substantially horizontal planting action posture and a rearward downward sheet withdrawal action posture with the front end side as a fulcrum, the sheet receiver is switched rearward and downward. This makes it possible to easily pull out the sheet member by hand and fix it to the field on the pull-out end side, which is necessary when the planting (covering) work is started.

[Brief description of drawings]

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

FIG. 2 is a side view showing a state in which a planting part is lifted up.

FIG. 3 is a plan view of the multi-transplanter.

FIG. 4 is an enlarged side view of a main part.

FIG. 5 is an enlarged side view showing the actions of the sheet member and the sheet receiver when the planting part is raised.

FIG. 6 is an enlarged plan view of a preliminary roll support portion.

FIG. 7 is a plan view showing a mounting structure of a cutter.

FIG. 8 is an enlarged side view of a preliminary roll support portion.

FIG. 9 is a perspective view showing the action of the roller float.

FIG. 10 is a side view of a roller float attachment portion.

FIG. 11 is a perspective view of a roller float mounting portion and a hydraulic pressure sensing portion.

FIG. 12 is an exploded perspective view of a hydraulic pressure sensor.

FIG. 13 is a plan view showing another embodiment of the roller float.

FIG. 14 is a perspective view of an operating mechanism of a guide roller, a sheet receiver, and a scraper.

FIG. 15 is an exploded perspective view of an operating mechanism of a guide roller, a sheet receiver, and a scraper.

FIG. 16 is an operation explanatory view showing a guide roller descending state, a sheet receiving body raising state, and a scraper operating state.

17 is an explanatory view of the action of the compression spring in FIG.

FIG. 18 is an operation explanatory diagram showing a guide roller descending state, a sheet receiving body descending state, and a scraper operating state.

19 is an explanatory view of the action of the compression spring in FIG.

FIG. 20 is an operation explanatory view showing a guide roller rising state, a sheet receiving body lowering state, and a scraper retracted state.

21 is an explanatory view of the action of the compression spring in FIG.

[Explanation of symbols]

 1 Traveling Aircraft 11 Drive Case for Planting Section 21 Planting Rod 22 Roller Float 30 Roll Support Section 41 Switching Control Lever 43 Sheet Receiver 50 Cutter 52 Cutter Mounting Arm 60 Spare Roll 61 Spare Roll Support A Multi Transplanter B Fertilization Device P Planting part b Sheet member (roll)

Claims (2)

[Claims] 1. A planting part is connected to a rear part of a traveling machine body so as to be able to move up and down, and a roll-shaped sheet member horizontally stretched on a roll supporting part is sequentially fed out rearward to cover a field scene and seedlings are planted by a planting rod. In a multi-transplanter adapted to be planted from above the covered sheet member, when the roll support part is located at the lower front part of the planting part and mounted on the planting part, and the planting part is in a raised state A plurality of sheet receivers that receive and support the sheet member from below are provided in the planting width direction, and extend backward from the front side of the planting part, bypassing the bottom of the planting part. Seat support device for transplanter. 2. The seat receiving member is configured to be switchable between a substantially horizontal planting action posture and a rearward descending sheet pullout action posture with the front end side being a fulcrum. Seat support device for multi-transplanter.