WO2022145411A1 - Work machine - Google Patents

Abstract

A work machine (1) comprises: a cultivating unit (18) that rotates about an axis (16) extending in the machine width direction (K2) and cultivates an agricultural field; a ridge forming device (A) that forms a ridge (UN) on the agricultural field cultivated by the cultivating unit; a multi-film laying unit (300B) that lays a multi-film (300F) on the ridge; and a soil collecting member (D) that collects soil onto the multi-film, wherein the soil collecting member comprises a soil covering member (DS) that covers the edge of the multi-film with soil and a blade (BL) that is disposed more inward than the soil covering member in the machine width direction and that leads, onto the multi-film laid on the top of the ridge, the soil with which the edge is covered, and the blade is formed separately from the soil covering member, disposed so as to be inclined with respect to the soil covering member in a plan view, and extends inward in the machine width direction.

Description

Working machine

The present invention relates to, for example, a working machine for cultivating a field and planting seedlings.

Conventionally, working machines disclosed in Patent Documents 1 and 2 are known.
The working machine disclosed in Patent Document 1 is capable of planting (transplanting) seedlings together with ground work (cultivation, etc.) while traveling. The working machine includes a tractor, a rotary cultivator mounted on the rear of the tractor, and a transplanter mounted on the rotary cultivator. The rotary tiller is provided with a cultivator for cultivating the field, and is equipped with a ridger for forming ridges in the cultivated field and a multi-film laying device for laying multi-film on the ridges. The multi-film laying device includes a film roll support shaft, a film presser, a soil covering member, and the like.

Japanese Patent Publication "Japanese Patent Laid-Open No. 2018-29" Japanese Patent Publication "Japanese Patent Laid-Open No. 2020-65520"

In the working machine described in Patent Document 1, the soil covering member can cover the edge of the multi-film with soil, but there is a problem that the multi-film covering the upper surface of the ridge cannot be covered with soil. Further, in the working machine described in Patent Document 1, the soil covering member can cover the edge of the multi-film with soil, but the multi-film covering the upper surface of the ridge cannot be covered with soil, so that the transplanting machine is planted. There is a problem that the mulch film may be peeled off due to wind entering from the planting hole made in the film by the device.

The working machine described in Patent Document 2 has a problem that it is difficult to attach and detach a heavy multi-film roll to a film roll support shaft.
Therefore, an object of the present invention is to provide a working machine in which soil is put on a mulch film covering the upper surface of a ridge.
Another object of the present invention is to provide a working machine capable of preventing peeling due to wind entering from a planting hole by covering a mulch film covering the upper surface of the ridge with soil prior to planting. do.
Another object of the present invention is to provide a working machine in which the multi-film roll can be easily attached and detached.

The working machine according to the first aspect of the present invention includes a cultivated portion that rotates around an axis extending in the machine width direction to cultivate a field, and a ridge forming device that forms ridges in the field cultivated in the cultivated portion. A multi-film laying portion for laying a multi-film on the ridges and a soil gathering member for gathering soil on the multi-film are provided. It has a blade which is arranged inside in the machine width direction from the soil covering member and guides the soil covered on the end portion onto a multi-film covering the upper surface of the ridge, and the blade is configured separately from the soil covering member. It is arranged so as to be inclined with respect to the soil covering member in a plan view and extends inward in the machine width direction.

Further, the inner end portion of the soil covering member in the machine width direction and the outer end portion of the blade in the machine width direction coincide with or overlap each other in the machine width direction.
Further, the soil covering member is arranged so as to be inclined in a plan view so as to be inward in the machine width direction toward the rear.
Further, it is provided with an angle adjusting mechanism capable of adjusting the angle of inclination of the soil covering member.

Further, the ridge forming apparatus includes a grooving member for forming a flat ridge by cutting a groove in the field and a ridger for forming a high ridge by erecting a ridge in the field, and is used together with the grooving member. It is provided with a mounting structure to which a flat ridge member and a high ridge member used together with the ridger can be selectively attached.
Further, the flat ridge member includes a first soil covering member that covers the widthwise end portion of the mulch film laid on the flat ridge with soil, and the high ridge member is a mulch film laid on the high ridge. The mounting structure includes a second soil covering member that covers the end portion in the width direction with soil, and the mounting structure includes a first mounting portion to which the first soil covering member can be mounted and a second mounting portion to which the second soil covering member can be mounted. And have.

Further, the flat ridge member includes a first film pressing roller that presses an end portion of the multi-film laid on the flat ridge in the width direction, and the high ridge member includes the width of the multi-film laid on the high ridge. The mounting structure includes a second film pressing roller that presses the end portion in the direction, and the mounting structure includes a third mounting portion to which the first film pressing roller can be attached and a fourth mounting portion to which the second film pressing roller can be attached. And have.

Further, the flat ridge member includes the blade, and the mounting structure has a fifth mounting portion to which the blade can be mounted.
The working machine according to the second aspect of the present invention includes a ridge forming device for forming ridges in a field, a multi-film laying device for laying a multi-film on the ridges, and a seedling planting on the ridge on which the multi-film is laid. The multi-film laying device includes a planting device, and the multi-film laying device is arranged in front of a soil covering member for covering the end portion of the multi-film with soil and the planting device, and is covered with the end portion by the soil covering member. It has a blade that guides the soil that has been removed onto a multi-film that covers the top of the ridge.

Further, the ridge forming apparatus is provided with a cultivated portion for cultivating the field, and the ridge forming device is a grooving member for cutting a groove in the field cultivated in the cultivated portion to form a ridge.
Further, the soil covering member is arranged behind the grooving member, and the blade is arranged behind the soil covering member.
Further, the soil covering member is arranged at a position overlapping with the grooving member in the width direction of the multi-film, and the blade extends from the end side to the center side of the multi-film.
Further, the soil covering member and the blade are formed separately.
Further, the soil covering member and the blade are integrally formed.

The working machine according to the third aspect of the present invention includes a multi-film laying device for laying a multi-film on a ridge formed in a field, and the multi-film laying device is a film roll on which the multi-film is wound. It has a roll support shaft that is penetrated to support the film roll over the entire length, one support portion that supports one end side of the roll support shaft, and the other support portion that supports the other end side of the roll support shaft. One end side of the roll support shaft is removable from the one support portion, and the other end side is swingable with the other support portion as a fulcrum.

Further, the other end side of the roll support shaft can swing in the vertical direction with the other end support portion as a fulcrum.
Further, the roll support shaft supports a first roll support shaft that supports a multi-film laid on the first ridge, and a second roll support shaft that supports the multi-film laid on the second ridge adjacent to the first ridge. A two-roll support shaft is included, and the first roll support shaft and the second roll support shaft can swing independently.

Further, the one-sided support portion includes a first one-sided support portion that supports one end side of the first roll support shaft and a second one-sided support portion that supports one end side of the second roll support shaft. The other support portion includes a first other support portion that supports the other end side of the first roll support shaft, and a second other support portion that supports the other end side of the second roll support shaft.
Further, the first other support portion supports the other end side of the first roll support shaft between the first ridge and the second ridge, and the second other support portion is the first. The other end side of the second roll support shaft is supported between the ridges and the second ridges.
Further, the one support portion and the other support portion can move in parallel with the axial direction of the roll support shaft.

Further, the roll support shaft is formed in a cylindrical shape, and the other support portion penetrates a support rod that is inserted into the other end side of the roll support shaft to support the other end side and the support rod. It has a through shaft and a holding member that rotatably holds the roll support shaft around the axis of the through shaft.
Further, the other support portion is movably arranged along the roll support shaft, and moves to an allowable position that allows rotation of the roll support shaft and a lock position that does not allow rotation of the roll support shaft. It has a possible locking member.

According to the working machine according to the first aspect, the soil covered on the end portion of the multi-film by the soil covering member can be guided inward in the machine width direction by the blade, so that the soil covering the upper surface of the ridge is on the multi-film. Can be covered with soil.
According to the working machine according to the second aspect, since the blade for guiding the soil is provided on the multi-film covering the upper surface of the ridge before the planting device, before the planting device is used to make a planting hole. Soil can be placed on the mulch film that covers the upper surface of the ridge, and the mulch film can be prevented from peeling off due to the wind entering from the planting hole.

According to the working machine according to the third aspect, the roll support shaft swings, which makes it easy to attach and detach the multi-film roll.

It is a side view of a working machine. It is a side view of the ground work apparatus. It is a top view of the ground work apparatus. It is a rear perspective view of a rotary tiller. It is a side view of a tillage part and a multi-film laying apparatus. It is a bottom view of FIG. It is a plan view of FIG. It is an enlarged view of the left part of FIG. 7. It is a perspective view of FIG. FIG. 7 is an enlarged view of the central portion in the machine width direction of FIG. 7. It is a perspective view of FIG. What is shown on the upper side is a plan view of "grooving member for flat ridges, film holding roller, soil covering member, blade, multi-film, etc.", and what is shown on the lower side is "formed flat ridges, seedlings, and so on. It is sectional drawing of the mulch film with a bent end, and the soil overlaid on the mulch film. It is a figure of "for high ridges" corresponding to FIG. It is a figure of "for high ridges" corresponding to FIG. 7. It is a figure of "for high ridges" corresponding to FIG. It is a figure of "for high ridges" corresponding to FIG. It is a figure of "for high ridges" corresponding to FIG. It is a figure of "for high ridges" corresponding to FIG. It is a figure of "for high ridges" corresponding to FIG. It is a perspective view which shows the "mounting structure" on the left side in the machine width direction as seen from the machine body side (right side). It is a perspective view which shows the "mounting structure" of FIG. 20 as seen from the outside side (left side) of the machine body. It is a perspective view which shows the "mounting structure" of the central part in the machine width direction as seen from the right side. It is a front view for demonstrating the multi-film mounting structure. It is an enlarged view of the left half (first roll support shaft) of FIG. 23. It is a top view of the other end side (the other support part) of the 1st roll support shaft and the 2nd roll support shaft. It is a perspective view of one end side (one side support part) of the 1st roll support shaft. It is a perspective view of the other end side (the other support part) of the 1st roll support shaft and the 2nd roll support shaft. In FIG. 27, the roll support shaft is a virtual line (dashed-dotted line), and the lock member is omitted. It is sectional drawing which shows the unlocked state of a lock member. It is sectional drawing which shows the locked state of a lock member. It is a figure for demonstrating that the planting part frame and the mulcher arm are connected by a chain, and the mulcher arm also rises as the planting part frame rises. It is a figure for demonstrating the mechanism which raises a planting part frame.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings as appropriate.
FIG. 1 shows a working machine 1 capable of planting (transplanting) seedlings together with ground work (cultivation, etc.) while traveling. The working machine 1 has a traveling body 1A and a ground working device 1B mounted on the rear portion of the traveling body 1A. The ground work device 1B includes a first ground work machine 2 mounted on the rear portion of the traveling body 1A so as to be able to move up and down, and a second ground work machine 3 mounted on the rear portion of the first ground work machine 2 so as to be liftable. ing.

In this embodiment, a tractor which is a traveling vehicle is exemplified as a traveling body 1A. Further, a rotary tiller is exemplified as the first ground work machine 2. Further, as the second ground working machine 3, a transplanting machine for planting seedlings in a field is exemplified. Hereinafter, the traveling body is referred to as a tractor 1A, the first ground working machine is referred to as a rotary tiller 2, and the second ground working machine is referred to as a transplanting machine 3.
The traveling body 1A is not limited to the tractor, and may be another traveling vehicle. Further, the first ground work machine 2 is not limited to the rotary tiller, and may be any machine that works on the field. Further, although the rotary cultivator 2 exemplifies a center drive type rotary cultivator, it may be a side drive type rotary cultivator.

FIG. 1 shows a side view of the working machine 1. Unless otherwise specified in the present embodiment, the front side (left side of FIG. 1) of the driver seated in the driver's seat 5 of the tractor 1A is the front, the rear side of the driver (right side of FIG. 1) is the rear, and the left side of the driver (the left side of FIG. 1). The front side of FIG. 1) will be described as the left side, and the right side of the driver (the back side of FIG. 1) will be described as the right side. Further, the horizontal direction K2 (see FIG. 3), which is a direction orthogonal to the front-rear direction K1 (see FIG. 1) of the tractor 1A, will be described as the machine width direction K2.

Further, the direction from the central portion of the tractor 1A in the machine width direction to the right side or the left side will be described as the outside of the machine width. In other words, the outside of the machine width is the direction K2 in the machine width direction and away from the central portion of the tractor 1A in the machine width direction. The right side of the tractor 1A in the machine width direction, or the direction from the left side to the center part will be described as the inside of the machine width. That is, the inside of the machine width is the direction opposite to the outside of the machine width direction. In other words, the inside of the machine width is the direction in which the machine width direction K2 approaches the central portion of the tractor 1A in the machine width direction.

As shown in FIG. 1, the tractor 1A has a vehicle body 6 and a traveling device 7 including a front wheel 7F mounted on the front portion of the vehicle body 6 and a rear wheel 7R mounted on the rear portion of the vehicle body 6. The vehicle body 6 has a motor (drive source) E1 and a power transmission case T1 connected to the rear of the motor E1. The prime mover E1 drives the traveling device 7.
The prime mover E1 is, for example, a diesel engine. Further, the prime mover E1 may be a gasoline engine, an LPG engine or an electric motor, or may be a hybrid type having an engine and an electric motor.

The power transmission case T1 is configured by directly connecting a clutch housing having a built-in clutch, a transmission case having a built-in transmission, a differential case having a built-in differential device, and the like.
A driver's seat 5 is mounted on the rear portion of the vehicle body 6, and a power take-off shaft (PTO shaft) 22 for taking out the power of the prime mover E1 is mounted so as to project rearward. That is, the traveling body 1A has a power take-out shaft 22 that takes out the power of the prime mover E1. A steering wheel 8 is provided in front of the driver's seat 5. Further, the tractor 1A has a battery (not shown) mounted on the front portion.

As shown in FIG. 1, the rotary tiller 2 is mounted on the rear part of the tractor 1A so as to be able to move up and down via a mounting mechanism such as a three-point link mechanism 9. The three-point link mechanism 9 has a top link 9A and a lower link 9B, and is mounted on the rear portion of the vehicle body 6. A lift link 10A capable of swinging up and down is provided at the rear portion of the vehicle body 6, and the lift link 10A is connected to the lower link 9B via a lift rod 10B. The lift link 10A is driven up and down by a hydraulic device 10C provided at the rear upper part of the vehicle body 6, and the lower link 9B is raised and lowered by moving the lift link 10A up and down. As a result, the rotary tiller 2 moves up and down.

The rotary tiller 2 has a transmission case 12 that receives the power of the PTO shaft 22 of the tractor 1A via a universal joint (not shown). The transmission case 12 is located at the center of the rotary tiller 2 in the width direction (the same direction as the machine width direction K2).
2 and 3 are detailed views of the ground work apparatus 1B. The ground work device 1B has a rotary tiller 2 and a transplanter 3.
The rotary tiller 2 has a rotary machine frame 11, and the transplanter 3 has a transplanter frame 37. The rotary machine frame 11 and the transplanting machine frame 37 are vertically and vertically connected by a connecting mechanism 41 composed of a parallel link mechanism. As a result, the rotary tiller 2 and the transplanter 3 are relatively movable in the vertical direction.

As shown in FIG. 3, the rotary tiller 2 is provided with the transmission case 12 at the center of the machine width direction K2. As shown in FIG. 2, a rotating shaft 16 is provided at the lower part of the transmission case 12. The rotary shaft 16 is provided so as to project from the lower part of the transmission case 12 on one side and the other side of the machine width direction K2. A large number of tilling claws 17 (see FIGS. 5 and 6) are fixed to the outer periphery of the rotating shaft 16 via brackets. As the rotating shaft 16 rotates around the axis, the tilling claw 17 cultivates (cultivates) the field and discharges the cultivated soil to the rear rear cover 19B. The rotating shaft 16 and the cultivating claw 17 constitute a cultivating portion 18 for cultivating the field.

As shown in FIGS. 2 and 3, soil gathering discs 56L and 56R are arranged in front of the rotary tiller 2. The soil gathering discs 56L and 56R are members for pulling soil inward in the width of the machine toward the tilling portion 18. The soil gathering disk 56L is arranged on one side (left side) in the machine width direction, and is located on the left front side of the rotary tiller 2. The soil gathering disk 56R is arranged on the other side (right side) in the machine width direction, and is located on the right front side of the rotary tiller 2. The soil gathering discs 56L and 56R are arranged diagonally so as to shift from the outside of the machine width to the inside of the machine width from the front to the rear in a plan view.

As shown in FIG. 2, a ridge forming device A is provided at the rear of the rotary tiller 2. The ridge forming device A forms a ridge UN (see FIG. 12) in the field cultivated by the cultivated portion 18. In this embodiment, two ridges UN1 and UN2 are formed as shown in FIG. 12, but the number of ridges formed in the present invention is not limited to two.
A multi-film laying device 300 is provided behind the ridge forming device A. The mulch film laying device 300 is provided at the rear of the rotary tiller 2 and is located at the front of the transplanter 3. The multi-film laying device 300 lays the multi-film 300F on the ridge UN (see FIG. 12).

As shown in FIG. 2, the transplanting machine 3 includes a seedling supply device 38, a planting device 39 provided below the seedling supply device 38, a soil covering device 40 provided behind the planting device 39, and a seedling. It has a seedling stand 190 provided above the feeder 38. The seedling stand 190 is provided in a plurality of stages and is used to place a seedling tray containing seedlings to be transplanted.
As shown in FIG. 3, the seedling supply device 38 includes a plurality of seedling supply devices (first seedling supply device 38A and second seedling supply device 38B) arranged in the machine width direction K2. A plurality of planting devices 39A and B and soil covering devices 40A and B are provided below the plurality of seedling supply devices 38A and B, respectively (see FIG. 7). The planting device 39 has a planting tool 64 (see FIG. 2) for holding and descending the seedlings from the seedling supply device 38 and plunging into the field to plant the seedlings.

The ridge forming device A forms the first ridge UN1 in the field below the first seedling supply device 38A, and forms the second ridge UN2 in the field below the second seedling supply device 38B (see FIG. 12). ).
In the first ridge UN1, seedlings supplied from the first seedling supply device 38A are planted in two rows by the planting device 39A. In the second ridge UN2, the seedlings supplied from the second seedling supply device 38B are planted in two rows by the transplanting device 39B.
As shown in FIG. 3, front chairs 187A, B and rear chairs 187C, D are provided in front of and behind each seedling supply device 38A, B.

The front chairs 187A and B are provided on the rotary machine frame 11 so as to be vertically movable via the connecting mechanism 41. The rear chairs 187C and D are provided on the seat frame 197 connected to the rotary machine frame 11 via the parallel link mechanism 200. The seat frame 197 is supported in the field by wheels 206.
As shown in FIG. 3, a seedling supply stand 188 is provided between each chair 187 and the seedling supply device 38. The seedling supply stand 188 is for placing the seedling tray of the seedling stand 190.
Further, above the rotary tiller 2, a spare seedling stand 280 for mounting a container for accommodating the seedling tray is provided.

<Bending structure at the end of the multi-film>
As shown in FIGS. 4 and 5, the working machine 1 according to the embodiment of the present invention cuts a groove in a cultivated portion 18 for cultivating a field and a field cultivated in the cultivated portion 18 to form ridges. It includes a grooving member Z. The tilling portion 18 can swing in the vertical direction with respect to the tilling claw 17 that rotates around the horizontal axis (rotating axis) 16, the rotary machine frame 11 that rotatably supports the horizontal axis 16, and the rotary machine frame 11. It has a rear cover 19B, which is attached and covers the rear of the tiller claw 17. The grooving member Z is attached to the rear cover 19B and can swing together with the rear cover 19B.

FIG. 4 is a rear perspective view of the rotary tiller 2. The rotary tiller 2 has a rotary machine frame 11. The rotary machine frame 11 includes a transmission case 12, a front support frame 13F, a rear support frame 13R, a left side frame 15L, and a right side frame 15R. The transmission case 12 is located at the center of the rotary tiller 2 in the width direction (the same direction as the machine width direction K2). The front support frame 13F is arranged in front of the transmission case 12 so as to extend in the machine width direction K2. The rear support frame 13R is arranged behind the transmission case 12 so as to extend in the machine width direction K2. The front support frame 13F and the rear support frame 13R are connected to the transmission case 12. The left side frame 15L connects the left ends of the front support frame 13F and the rear support frame 13R. The right side frame 15R connects the front support frame 13F and the right ends of the rear support frame 13R to each other.

A mounting portion 13R1 is provided at the center of the rear support frame 13R in the machine width direction. A central mounting body 196M (see FIGS. 7 and 10), which will be described later, is fixed to the mounting portion 13R1.
As shown in FIG. 4, the rotary cover 19 is provided on the rotary machine frame 11. The rotary cover 19 has an upper cover 19A, a rear cover 19B, and a side cover 19C. The upper part of the cultivated portion 18 is covered with the upper cover 19A. The rear part of the cultivated portion 18 is covered with the rear cover 19B. The side of the cultivated portion 18 is covered with the side cover 19C.

The upper end of the rear cover 19B is rotatably pivotally supported around the axis in the machine width direction K2 via the pivot 19D on the rotary machine frame 11 and can swing up and down (see FIG. 5). The rear cover 19B is urged downward by a pair of left and right repression devices 20. The repression device 20 is a device that urges the rear cover 19B downward by the force of a spring. The rear cover 19B moves up and down with respect to the rotary machine frame 11 following the height (undulations) of the surface of the field. The rear cover 19B swings in the vertical direction with respect to the rotary machine frame 11, and the lower end of the rear cover 19B is always in contact with the ground even if the tillage depth fluctuates.

The mounting frame X is mounted on the rear end of the rear cover 19B. The mounting frame X extends in the machine width direction K2. The mounting frame X is made of a long material, and its length is substantially the same as the length of the rear cover 19B in the machine width direction K2. Both ends of the mounting frame X are attached to the rear end of the rear cover 19B via the end bracket X1 and the intermediate portion via the intermediate bracket X2.

An irrigation tube guide KY is attached to the attachment frame X. The irrigation tube guide KY will be described later.
A grooving member Z is attached to the mounting frame X. The grooving member Z is attached to the mounting frame X by the bracket W and the bolt W1. The grooving member Z is detachably attached to the mounting frame X and the position in the machine width direction K2 can be adjusted (see the grooving member Z and the arrow shown by the virtual line in FIG. 6).

The grooving member Z cuts a groove in a field cultivated in the cultivated portion 18 to form a ridge UN (see FIG. 12). The grooving member Z is a ridge forming device A for forming a flat ridge UN (see FIG. 12) in a field.
In the case of the present embodiment, the grooving member Z forms the first ridge UN1 and the second ridge UN2 as shown in FIG. In order to form one ridge UN, at least a pair of left and right grooving members Z, Z are required. Therefore, the grooving member Z includes a pair of left and right grooving members Z and Z forming the groove of the first ridge UN1 and a pair of left and right grooving members Z and Z forming the second ridge UN2.

Since the grooving member Z is mounted on the mounting frame X and can move in the direction parallel to the horizontal axis (rotating axis) 16 (machine width direction) along the mounting frame X, the grooving member Z is formed by the grooving member Z. The width of the ridge UN can be changed. Further, by mounting the plurality of pairs of grooving members Z with respect to the mounting frame X at intervals in the direction parallel to the horizontal axis 16, a plurality of ridges UN can be formed at the same time.

As shown in FIGS. 4 to 6, the groove cutting member Z includes a bottom plate Z1 having a square shape in a plan view forming the bottom surface of the groove, a front plate Z2 rising diagonally forward and upward from the front edge of the bottom plate Z1, and a bottom plate Z1. It has a rear plate Z3 that rises upward from the trailing edge, and a side plate Z4 that rises upward from the side edge of the bottom plate Z1.
Since the bottom plate Z1 is a quadrangular plate (flat plate) in a plan view, the bottom surface of the groove formed by the grooving member Z becomes a flat surface. Since the front plate Z2 is inclined, the resistance when the grooving member Z moves (cuts the groove) is reduced, and the soil can be compacted downward by the movement. The rear plate Z3 prevents soil from entering the inside of the grooving member Z. Since the side plate Z4 stands up perpendicular to the bottom plate Z1, the side surface of the ridge formed by the side plate Z4 is vertical, and the width of the upper surface of the ridge can be wider than when the side surface is an inclined surface. can.

As shown in FIG. 5, the grooving member Z swings up and down together with the rear cover 19B with respect to the rotary machine frame 11 as shown by the solid line and the virtual line. Since the horizontal axis 16 is rotatably supported in the rotary machine frame 11 and the cultivated portion 18 for cultivating the field is configured by the cultivated claw 17 provided on the horizontal axis 16, the cultivated depth by the cultivated portion 18 is formed. When the size changes, the rotary machine frame 11 moves up and down with respect to the surface of the field. On the other hand, since the rear cover 19B covering the rear of the tilling claw 17 is vertically swingably attached to the rotary machine frame 11, even if the rotary machine frame 11 moves up and down, the rear cover 19B remains in the field. The surface is followed to form the surface of the ridge UN. Therefore, the grooving member Z attached to the rear cover 19B and swingable together with the rear cover 19B can form a groove at a constant depth from the field surface. Therefore, as shown in FIG. 12, the depth of the groove cut by the grooving member Z becomes a constant depth from the surface of the ridge UN even if the tilling depth fluctuates.

As shown in FIG. 5, the working machine 1 includes a multi-film laying device 300 for laying the multi-film 300F on the ridge UN. The multi-film laying device 300 has a film pressing roller C that presses the end portion of the laid multi-film 300F in the width direction. The film pressing roller C rolls along the groove cut by the grooving member Z and bends the end portion.

As shown in FIG. 5, the multi-film laying device 300 includes a multi-film laying portion 300B for mounting the multi-film roll 300R, a film pressing roller C for pressing the end of the multi-film 300F, and soil gathering for covering the multi-film 300F with soil. It has a member D.
The multi-film laying portion 300B has a roll support shaft 300J. The multi-film roll 300R is supported by the roll support shaft 300J. As shown in FIG. 6, the roll support shaft 300J includes a first roll support shaft 301 and a second roll support shaft 302. The multi-film roll 300R includes a first film roll 303 and a second film roll 304. The multi-film 300F drawn from the multi-film roll 300R is put on the ridge UN (see FIG. 12).

As shown in FIG. 5, the multi-film laying portion 300B, the film pressing roller C, and the soil gathering member D are provided in the mounting structure E.
As shown in FIGS. 6 and 7, the mounting structure E includes a left mounting structure EL, an intermediate mounting structure EM, and a right mounting structure ER.
The left mounting structure EL is provided on the mounting body 196 provided on the left side of the rotary machine frame 11 (see FIGS. 7, 8, and 9). The intermediate mounting structure EM is provided on the central mounting body 196M (see FIGS. 7, 10, and 11). The right mounting structure ER is mounted on the mounting body 196 provided on the right side of the rotary machine frame 11 (see FIG. 7).

The left and right mounting bodies 196 are arranged on both the left and right sides of the rotary tiller 2. The front portions of the left and right mounting bodies 196 are mounted on the left and right side frames 15L and R of the rotary machine frame 11. The central mounting body 196M is fixed to the mounting portion 13R1 (see FIGS. 4 and 5) of the rear support frame 13R of the rotary machine frame 11.
As shown in FIGS. 6 and 7, the film pressing roller C of the multi-film laying apparatus 300 includes a left film pressing roller 331, a middle left film pressing roller 332, a middle right film pressing roller 333, and a right film pressing roller 334. These film pressing rollers C are composed of, for example, wheels. In addition, these presser rollers C may be referred to as "first presser rollers" in order to distinguish them from the presser rollers for high ridges described later.

The left film presser roller 331 is supported by the left left mounting structure EL, the middle left film presser roller 332 and the middle right film presser roller 333 are supported by the intermediate mount structure EM, and the right film presser roller 334 is on the right side. It is supported by the right mounting structure ER.
As shown in FIG. 12, each film pressing roller C is attached to the mounting structure E so that the position in the machine width direction can be adjusted so as to be in the position of entering the groove MZ formed by the grooving member Z. ..

The left film pressing roller 331 and the middle left film pressing roller 332 are provided in an inclined shape so as to move forward toward the first ridge UN1 side. The middle right film pressing roller 333 and the right film pressing roller 334 are provided in an inclined shape so as to move forward toward the second ridge UN2 side.
The left film pressing roller 331 and the middle left film pressing roller 332 are arranged behind the first film roll 303. The left film pressing roller 331 and the middle left film pressing roller 332 press both ends of the multi-film F1 laid on the first ridge UN1.

The middle right film pressing roller 333 and the right film pressing roller 334 are arranged behind the second film roll 304. The middle right film pressing roller 333 and the right film pressing roller 334 press both ends of the multi-film F2 laid on the second ridge UN2.
As shown in FIGS. 6 and 7, the soil gathering member D of the multi-film laying device 300 has a soil covering member DS, and the soil covering member DS includes a left soil covering member 321 and a middle left soil covering member 322, and a middle right soil covering member 323. Includes right soil covering member 324. The soil covering member DS is composed of a disk-shaped soil covering disk. In addition, these soil covering members DS may be referred to as "first soil covering member" in order to distinguish them from the soil covering members for high ridges described later.

The left soil covering member 321 is provided on the left mounting structure EL on the left side (see FIGS. 6 to 9). The middle left soil covering member 322 and the middle right soil covering member 323 are provided in the intermediate mounting structure EM (see FIGS. 6, 7, 10 and 11). The right soil covering member 324 is provided on the right mounting structure ER on the right side (see FIGS. 6 and 7).
As shown in FIG. 12, the left soil covering member 321 and the middle left soil covering member 322 are provided in an inclined shape that approaches each other (shifts to the first ridge UN1 side) toward the rear. The middle right soil covering member 323 and the right soil covering member 324 are provided in an inclined shape that approaches each other (shifts to the second ridge UN2 side) toward the rear.

The left soil covering member 321 is arranged behind the left portion of the first film roll 303. The left soil covering member 321 covers the left end portion of the multi-film 300F1 unwound from the first film roll 303 and laid on the first ridge UN1 with soil TU. The middle left soil covering member 322 is arranged behind the right portion of the first film roll 303. The middle left soil covering member 322 covers the right end portion of the multi-film 300F1 unwound from the first film roll 303 and laid on the first ridge UN1 with soil TU.

The middle right soil covering member 323 is arranged behind the left portion of the second film roll 304. The middle right soil covering member 323 covers the left end portion of the multi-film 300F2 unwound from the second film roll 304 and laid on the second ridge UN2 with soil TU. The right soil covering member 324 is arranged behind the right portion of the second film roll 304. The right soil covering member 324 covers the right end portion of the multi-film 300F2 unwound from the second film roll 304 and laid on the second ridge UN2 with the soil TU.

As described above, the multi-film laying apparatus 300 has a film presser roller C that presses the end portion of the laid multi-film 300F in the width direction, and the film presser roller C has a groove cut by the groove cutting member Z. It rolls along the MZ and bends the end portion of the multi-film 300F in the width direction. Therefore, the end portion of the multi-film 300F laid on the ridge UN is bent by the film pressing roller C and is located in the groove MZ.

Further, since the multi-film laying device 300 has a soil covering member DS for covering the end portion of the multi-film F bent by the film pressing roller C with soil, the end portion of the multi-film F is covered with the soil covering member DS. It is held down by the soil that has been removed. Therefore, the multi-film F does not peel off due to wind or the like.
As shown in FIGS. 6 and 7, the soil gathering member D of the multi-film laying device 300 has a blade BL. The blade BL includes a first blade BL1, a second blade BL2, a third blade BL3, and a fourth blade BL4. Each blade BL1 to BL4 is composed of a flat plate. The lower edge of the blade BL is formed in a straight line. The lower edge of the blade BL is arranged parallel to the ground. As a result, the soil can be leveled by moving the blade BL.

The first blade BL1 is provided in the left mounting structure EL on the left side (see FIGS. 8 and 9), the second blade BL2 and the third blade BL3 are provided in the intermediate mounting structure EM (see FIGS. 10 and 11). The 4-blade BL4 is provided in the right mounting structure ER on the right side.
As shown in FIG. 12, the blades BL1 to BL4 are arranged behind the soil covering members 321 to 324, and the soil covered on the end portion of the multi-film F by the soil covering members 321 to 324 covers the upper surface of the ridge UN. It is guided on the multi-film F. In FIG. 12, the arrow YT indicates the direction in which the soil moves.

As shown in FIGS. 4, 7 and 9, the working machine 1 supplies water to the planting device 39 for planting seedlings in the ridge UN on which the multi-film 300F is laid and the seedlings planted by the planting device 39. The irrigation tube KY1 and the irrigation tube guide KY supporting the irrigation tube KY1 are provided. The irrigation tube guide KY is attached to the mounting frame X. As shown in FIG. 4, a pair of left and right irrigation tube guides KY are provided on the mounting frame X of the rear cover 19B. The position of the irrigation tube guide KY in the machine width direction can be adjusted along the mounting frame X.

As shown in FIGS. 7 and 9, the irrigation tube KY1 is supported by the irrigation tube guide KY. The irrigation tube KY1 sends water from a water tank (not shown) mounted on the traveling body 1A or the like to the vicinity of the planting tool 64 of the planting device 39 of the transplanting machine 3 via an irrigation pump (not shown). The end of the irrigation tube KY1 is located near the planter 64.
As a result, water can be stably supplied to the seedlings from the irrigation tube KY1. That is, since the mounting frame X is provided on the rear cover 19B that follows the surface of the field, the irrigation tube guide KY provided on the mounting frame X also follows the surface of the field, and this irrigation tube guide Since the irrigation tube KY1 supported by KY has better followability to the field surface, the water supply to the seedlings planted in the field is stable.

<Explanation of the combined structure of flat ridges and high ridges>
The working machine 1 shown in FIGS. 1 to 12 cuts a groove in a field to form a flat ridge UN. The working machine 1 shown in FIGS. 13 to 19 has ridges erected in the field to form high ridge UNH. The working machine 1 according to the embodiment of the present invention is designed so that it can be used for both flat ridge UN and high ridge UNH. Hereinafter, flat ridge UN and high ridge UNH may be collectively referred to as ridge UN.

<Structure for flat ridges>
The work machine 1 for flat ridges shown in FIGS. 1 to 12 has a cultivated portion 18 that rotates around an axis 16 extending in the machine width direction to cultivate the field, and a ridge UN in the field cultivated by the cultivated portion 18. The ridge forming apparatus A to be formed, the multi-film laying portion 300B for laying the multi-film 300F on the ridge UN, and the soil gathering member D for gathering soil on the multi-film F are provided. In the case of the working machine 1 for flat ridges, the ridge forming device A is a grooving member Z that cuts a groove in a field to form a flat ridge UN.

The soil gathering member D is a soil covering member DS that covers the end portion of the multi-film 300F with soil, and a multi-film 300F that is arranged inside in the machine width direction from the soil covering member DS and covers the upper surface of the ridge UN with the soil covered with the end portion. It has a blade BL that leads to the top. The blade BL is arranged so as to be inclined with respect to the soil covering member DS in a plan view and extends inward in the machine width direction K2. The blade BL is configured separately from the soil covering member DS.

The multi-film laying portion 300B lays the multi-film 300F on the ridge UN. The soil gathering member D has a soil covering member DS and a blade BL. The soil covering member DS covers the end portion of the multi-film 300F with soil. The blade BL guides the soil covered at the end onto the mulch film F covering the upper surface of the ridge UN.
As shown in FIGS. 6 and 7, the multi-film laying portion 300B has a roll support shaft 300J, and the roll support shaft 300J includes a first roll support shaft 301 and a second roll support shaft 302.

The first roll support shaft 301 supports the first film roll 303 around which the multi-film 300F1 laid on the first ridge UN1 is wound. The second roll support shaft 302 supports the second film roll 304 around which the multi-film 300F2 laid on the second ridge UN2 is wound. That is, the multi-film roll 300R supported by the roll support shaft 300J includes the first film roll 303 and the second film roll 304.

The first roll support shaft 301 and the second roll support shaft 302 extend in the width direction (machine width direction K2) of the tractor 1A. The axes of the first roll support shaft 301 and the second roll support shaft 302 are arranged so as to be in a straight line in the width direction of the tractor 1A (machine width direction K2). The end of the first roll support shaft 301 on the inner side of the machine width and the end of the second roll support shaft 302 on the inner side of the machine width are supported by the intermediate mounting structure EM (FIG. 10, FIG. 11). The left end of the first roll support shaft 301 (the end on the outer side of the machine width) is supported by the left mounting structure EL on the left side (see FIGS. 8 and 9).

As shown in FIGS. 8, 9 and 12, the soil gathering member D for gathering soil on the multi-film 300F includes a left soil covering member 321 which is a soil covering member DS for covering the end portion of the multi-film 300F with soil, and the multi-film 300F. It has a first blade BL1 which is a blade BL for guiding soil on the top.
The blade BL1 is arranged at an angle with respect to the soil covering member 321 in a plan view and extends inward in the machine width direction. The inner end portion of the soil covering member 321 in the machine width direction K2 and the outer end portion of the blade BL1 in the machine width direction coincide with or overlap each other in the machine width direction. The soil covering member 321 is arranged so as to be inclined in a plan view so as to be inward in the machine width direction K2 toward the rear. The soil covering member 321 is attached to the mounting structure E via an angle adjusting mechanism EL8 that can adjust the angle of inclination of the soil covering member 321.

In this embodiment, the blade BL1 is configured separately from the soil covering member 321 but the blade BL1 may be configured integrally with the soil covering member 321.
The central portion shown in FIGS. 10 and 11 and the one on the right side, which is not shown, are substantially the same as those on the left side of FIGS. 8 and 9, and thus the description thereof will be omitted.

<Structure for high ridges>
The working machine 1 shown in FIGS. 13 to 19 has ridges erected in the field to form high ridges. That is, the working machine 1 shown in FIGS. 13 to 19 is a working machine for high ridges.
The work machine 1 includes a cultivated portion 18 that rotates around an axis extending in the machine width direction to cultivate the field, a ridge forming device A that forms ridges UN in the field cultivated by the cultivated portion 18, and a high ridge UNH. It includes a multi-film laying portion 300B for laying the multi-film 300F, and a soil gathering member D for gathering soil on the multi-film 300F.
The soil gathering member D has a soil covering member DS that covers the end portion of the multi-film 300F with soil.

The ridge forming device A has a ridger 51 for forming high ridges by erecting ridges in a field. In the case of the working machine 1 for high ridges, the ridge forming device A is a ridge standing device 51 that raises ridges (forms high ridge UNH) in the field.
As shown in FIGS. 13 and 14, the ridger 51 is composed of, for example, a ridger. The ridger 51 has a shape in which the width (length in the machine width direction) expands from the front to the rear in a plan view.

As shown in FIG. 19, the ridger 51 includes a central first ridger 51M, a second ridger 51L on the left, and a third ridger 51R on the right. Therefore, two ridges UNH1 and UNH2 can be formed by forming grooves in the soil cultivated by the rotary tiller 2 with three ridgers. The upper surface of the high ridge UNH is formed by the rear cover 19B. In addition, 4 or more ridges 51 may be provided to form 3 or more ridges.

The second ridger 51L is arranged on one side (left side) in the width direction of the rotary tiller 2. The third ridger 51R is arranged on the other side (right side) of the rotary tiller 2 in the width direction. The first ridger 51M is arranged at the center of the rotary tiller 2 in the width direction.
The second ridger 51L forms the left side surface of the left ridge UNH1 out of the two ridges UNH1 and UNH2. The third ridger 51R forms the right side surface of the right ridge UNH2 out of the two ridges UNH1 and UNH2. The first ridger 51M forms a right side surface of the left ridge UNH1 and a left side surface of the right ridge UNH2.

The second ridger 51L is provided on the left mounting structure EL. The third ridger 51R is provided on the right mounting structure ER. The first ridger 51M is provided in the intermediate mounting structure EM.
As shown in FIGS. 13, 14 and 19, the multi-film laying portion 300B has a roll support shaft 300J. The multi-film roll 300R is supported by the roll support shaft 300J. The roll support shaft 300J includes a first roll support shaft 301 and a second roll support shaft 302. The multi-film roll 300R includes a first film roll 303 supported by the first roll support shaft 301 and a second film roll 304 supported by the second roll support shaft 302. The multi-film 300F drawn from the multi-film roll 300R is put on the high ridge UNH.

The first roll support shaft 301 and the second roll support shaft 302 extend in the width direction (machine width direction K2) of the tractor 1A. As shown in FIG. 19, the first roll support shaft 301 and the second roll support shaft 302 overlap each other in the width direction (machine width direction K2) of the tractor 1A. In other words, the portion 301a on the inner side of the machine width of the first roll support shaft 301 overlaps with the portion 302a on the inner side of the machine width of the second roll support shaft 302 in the machine width direction K2.

The right end of the first roll support shaft 301 (the end on the inner side of the machine width) is located to the right of the center of the multi-film laying device 300 in the machine width direction K2. Further, the right end portion of the first roll support shaft 301 is located to the right of the left end portion of the second roll support shaft 302 and the left end portion of the second film roll 304.
The left end of the second roll support shaft 302 (the end on the inner side of the machine width) is located to the left of the center of the multi-film laying device 300 in the machine width direction K2. Further, the left end portion of the second roll support shaft 302 is located to the left of the right end portion of the first roll support shaft 301 and the right end portion of the first film roll 303.

As shown in FIG. 14, the first roll support shaft 301 and the second roll support shaft 302 are arranged so as to be offset in the front-rear direction K1. As a result, the first film roll 303 and the second film roll 304 are arranged so as to be offset in the front-rear direction K1. In the case of the present embodiment, the first roll support shaft 301 is arranged in front of the second roll support shaft 302. However, the first roll support shaft 301 may be arranged behind the second roll support shaft 302. Further, although not shown, the first roll support shaft 301 and the second roll support shaft 302 may be arranged so as to be offset in the vertical direction.

The left end portion of the first roll support shaft 301 is supported by the left mounting structure EL. The right end of the first roll support shaft 301 is supported by the intermediate mounting structure EM. The left end of the second roll support shaft 302 is supported by the intermediate mounting structure EM. The right end of the second roll support shaft 302 is supported by the right mounting structure ER.
As shown in FIGS. 13 and 14, the film presser roller C of the multi-film laying apparatus 300 includes a left film presser roller 331H for high ridges, a middle left film presser roller 332H for high ridges, and a middle right film presser roller 333H for high ridges. , And the right film presser roller 334H for high ridges. These film pressing rollers C are composed of, for example, wheels.

The left film pressing roller 331H for high ridges is supported by the left mounting structure EL. The middle left film presser roller 332H for high ridges and the middle right film presser roller 333H for high ridges are supported by the intermediate mounting structure EM. The right film presser roller 334H for high ridges is supported by the right mounting structure ER.
The high ridge presser roller C may be referred to as a "second presser roller" in order to distinguish it from the "first presser roller" for flat ridges.

As shown in FIG. 19, each film pressing roller C is attached to the mounting structure E so that the position can be adjusted in the machine width direction so as to be in the position of entering the groove MZ formed by the ridger 51. ..
The high ridge left film presser roller 331H and the high ridge middle left film presser roller 332H are provided in an inclined shape that approaches each other (shifts to the first ridge UNH1 side) toward the front. The middle right film presser roller 333H for high ridges and the right film presser roller 334H for high ridges are provided in an inclined shape that approaches each other (shifts to the second ridge UNH2 side) toward the front.

The high ridge left film presser roller 331H and the high ridge middle left film presser roller 332H are arranged behind the first film roll 303. The high ridge left film presser roller 331H and the high ridge middle left film presser roller 332H press both ends of the multi-film 300F1 laid on the first ridge UNH1.
The middle right film presser roller 333H for high ridges and the right film presser roller 334H for high ridges are arranged behind the second film roll 304. The middle right film presser roller 333H for high ridges and the right film presser roller 334H for high ridges press both ends of the multi-film 300F2 laid on the second ridge UNH2.

The middle left film presser roller 332H for high ridges and the middle right film presser roller 333H for high ridges are arranged so as to be offset in the front-rear direction K1. In the case of the present embodiment, the middle left film pressing roller 332H for high ridges is arranged in front of the middle right film pressing roller 333H for high ridges. However, it is sufficient that the film pressing roller of either the middle left film pressing roller for high ridges 332H or the middle right film pressing roller for high ridges 333H is arranged behind the other film pressing roller. Which of the middle left film presser roller 332H for high ridges and the middle right film presser roller 333H for high ridges to be arranged rearward can be determined by the front-rear relationship between the first roll support shaft 301 and the second roll support shaft 302. can.

As shown in FIG. 19, the soil gathering member D has a soil covering member DS. The soil covering member DS includes a left soil covering member 321H for high ridges, a middle left soil covering member 322H for high ridges, a middle right soil covering member 323H for high ridges, and a right soil covering member 324H for high ridges. The soil covering member DS is composed of a disk-shaped soil covering disk.
In addition, these high ridge soil covering members DS may be referred to as "second soil covering member" in order to distinguish them from the "first soil covering member" for flat ridges.

The left soil covering member 321H for high ridges and the middle left soil covering member 322H for high ridges are provided in an inclined shape that approaches each other (shifts to the first ridge UNH1 side) toward the rear. The middle right soil covering member 323H for high ridges and the right soil covering member 324H for high ridges are provided in an inclined shape that approaches each other (shifts to the second ridge UNH2 side) toward the rear.
The left soil covering member 321H for high ridges is arranged behind the left portion of the first film roll 303. The left soil covering member 321H for high ridges is unwound from the first film roll 303 and covers the left end portion of the multi-film 300F1 laid on the first ridge UNH1 with soil. The middle left soil covering member 322H for high ridges is arranged behind the right portion of the first film roll 303. The middle left soil covering member 322H for high ridges covers the right end of the first ridge UNH1 of the multi-film 300F1 unwound from the first film roll 303 and laid on the first ridge UNH1.

The middle right soil covering member 323H for high ridges is arranged behind the left portion of the second film roll 304. The middle right soil covering member 323H for high ridges is unwound from the second film roll 304 and covers the left end portion of the multi-film 300F2 laid on the second ridge UNH2. The right soil covering member 324H for high ridges is arranged behind the right portion of the second film roll 304. The right soil covering member 324H for high ridges is unwound from the second film roll 304 and covers the right end portion of the multi-film 300F2 laid on the second ridge UNH2 with soil.

The middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges are arranged so as to be offset in the front-rear direction K1. In the case of this embodiment, the middle left soil covering member 322H for high ridges is arranged in front of the middle right soil covering member 323H for high ridges. However, it is sufficient that one of the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges is arranged behind the other soil covering member. Which of the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges is arranged rearward can be determined by the front-rear relationship between the first roll support shaft 301 and the second roll support shaft 302. Specifically, when the second roll support shaft 302 is arranged behind the first roll support shaft 301, the middle right soil covering member 323H for high ridges is arranged behind the middle left soil covering member 322H for high ridges. When the first roll support shaft 301 is arranged behind the second roll support shaft 302, the middle left soil covering member 322H for high ridges is arranged behind the middle right soil covering member 323H for high ridges.

Further, the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges are arranged so as to overlap each other in the width direction (machine width direction K2) of the tractor 1A (see FIG. 18). Further, the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges overlap each other in the front-rear direction K1 as well.
In FIG. 19, the direction in which the soil moves is indicated by an arrow YT.

As shown in FIG. 15, the left soil covering member 321H for high ridges is attached to the left attachment structure EL. As shown in FIG. 17, the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges are attached to the intermediate mounting structure EM. As shown in FIG. 14, the right soil covering member 324H for high ridges is attached to the right mounting structure ER.
In the working machine 1 according to the embodiment of the present invention, the flat ridge working machine shown in FIG. 12 and the like and the high ridge working machine shown in FIG. 19 and the like can be shared by one working machine 1.

That is, the ridge forming device A of the working machine 1 includes a grooving member Z that cuts a groove in the field to form a flat ridge UN, and a ridger 51 that raises a ridge in the field to form a high ridge UNH. The working machine 1 includes a mounting structure E to which a flat ridge member used together with the grooving member Z and a high ridge member used together with the ridger 51 can be selectively attached. ..
What is shown in FIGS. 20 to 22 is a "mounting structure E" for using both flat ridges and high ridges in one working machine 1. This "mounting structure E" includes "left mounting structure EL", "intermediate mounting structure EM", and "right mounting structure ER".

By attaching the "flat ridge member" to the mounting structure E and using the grooving member Z, the flat ridge working machine 1 for forming the flat ridge UN is configured (see FIG. 12 and the like). ). Further, instead of the flat ridge member, the "high ridge member" is attached to the mounting structure E, and the ridge holder 51 is used instead of the grooving member Z to form the high ridge UNH. A working machine 1 for high ridges is configured (see FIG. 19 and the like).

As shown in FIG. 12 and the like, the "flat ridge member" includes a "first soil covering member" which is a soil covering member DS for covering the widthwise end portion of the mulch film 300F laid on the flat ridge UN. The "first soil covering member" includes a left soil covering member 321, a middle left soil covering member 322, a middle right soil covering member 323, and a right soil covering member 324.
The "member for flat ridges" includes a "first film pressing roller" which is a film pressing roller C for pressing an end portion of the multi-film 300F laid on the flat ridge UN in the width direction. The "first film presser roller" includes a left film presser roller 331, a middle left film presser roller 332, a middle right film presser roller 333, and a right film presser roller 334.

The "flat ridge member" includes the blade BL. The blade BL guides the soil covered at the end by the soil covering member DS onto the multi-film 300F covering the upper surface of the ridge UN. The blade BL is arranged so as to be inclined with respect to the soil covering member DS in a plan view and extends inward in the machine width direction K2. The blade BL is configured separately or integrally with the soil covering member DS.
As shown in FIG. 19 and the like, the "high ridge member" includes a "second soil covering member" which is a soil covering member DS for covering the widthwise end portion of the mulch film 300F laid on the high ridge UNH. The "second soil covering member" includes a left soil covering member 321H for high ridges, a middle left soil covering member 322H for high ridges, a middle right soil covering member 323H for high ridges, and a right soil covering member 324H for high ridges.

The "high ridge member" includes a "second film pressing roller" which is a film pressing roller C for pressing the widthwise end portion of the multi-film 300F laid on the high ridge UNH. The "second film presser roller" includes a left film presser roller 331H for high ridges, a middle left film presser roller 332H for high ridges, a middle right film presser roller 333H for high ridges, and a right film presser roller 334H for high ridges. ..

As shown in FIGS. 20 and 21, the “left mounting structure EL” which is the mounting structure E has a base EL1 fixed to the mounting body 196 of the rotary machine frame 11. The base portion EL1 has a horizontal portion EL1H attached to the mounting body 196 and a vertical portion EL1V hanging from the center of the horizontal portion EL1H, and is formed in a T shape. A ridger 51 (51L) can be attached to the vertical portion EL1V (see FIG. 13).

The mounting arm EL2 is projected rearward from the vertical portion EL1V. The mounting arm EL2 is mounted on the bracket EL1a provided on the vertical portion EL1V so as to be swingable in the vertical direction via the pivot shaft EL1b. The vertical portion EL1V and the mounting arm EL2 are connected by a tension spring EL3, and the mounting arm EL2 is urged downward. A mounting block EL4 and a mounting plate EL5 are mounted on the tip of the mounting arm EL2. A chain mounting portion EL6 is provided on the upper surface of the mounting block EL4. A multi-film roll support portion EL7 is projected from the vertical portion EL1V toward the outside in the machine width direction.

The mounting plate EL5 is provided with a first mounting portion EL21 to which the "left soil covering member 321", which is the first soil covering member, can be mounted. The mounting block EL4 is provided with a second mounting portion EL22 to which the second soil covering member "left ridged left soil covering member 321H" can be mounted. On the base side of the mounting arm EL2, there is a third mounting portion EL23 to which the "left film pressing roller 331", which is the first film pressing roller, can be mounted. The mounting plate EL5 has a fourth mounting portion EL24 to which a second film pressing roller "left film pressing roller 331H for high ridges" can be attached. The mounting block EL4 has a fifth mounting portion EL25 to which the "first blade BL1", which is a blade BL, can be mounted.

As shown in FIGS. 8 and 9, the "left soil covering member 321", which is the first soil covering member, is attached to the "first mounting portion EL21" via the angle adjusting mechanism EL8.
The angle adjusting mechanism EL8 has an arm EL8b provided on the mounting plate EL5 so as to be rotatable in a horizontal plane via a support shaft EL8a. A long hole EL8c centered on a support shaft EL8a is formed in the arm EL8b, and the rotation angle of the arm EL8b can be adjusted by loosening the bolt EL8d inserted through the long hole EL8c. A left soil covering member 321 is attached to the tip of the arm EL8b.

As shown in FIGS. 15 and 16, the second soil covering member “left soil covering member 321H” is attached to the “second mounting portion EL22” via the second soil covering member mounting arm EL4a.
That is, the base of the second soil covering member mounting arm EL4a is fixed to the mounting block EL4, the plate portion EL4b is provided at the tip of the second soil covering member mounting arm EL4a, and the plate portion EL4b is covered with the left soil via the angle adjusting mechanism EL8. Member 321H is attached. Since the angle adjusting mechanism EL8 is the same as that shown in FIG. 8, the description thereof will be omitted.

As shown in FIGS. 8 and 9, the “left film pressing roller 331”, which is the first film pressing roller, is attached to the “third mounting portion EL23” via the roller mounting bar EL9.
That is, the roller mounting bar EL9 is mounted on the third mounting portion EL23 so as to project inward in the machine width direction, and the roller mounting bar EL9 is provided with the slider EL9a so as to be movable in the machine width direction. An L-shaped roller mounting arm EL9b is provided on the slider EL9a so as to be swingable in the vertical direction, and a left film pressing roller 331 is mounted on the lower end of the roller mounting arm EL9b. A tension spring EL9c is provided between the roller mounting arm EL9b and the slider EL9a, and the left film pressing roller 331 is urged in the grounding direction. The slider EL9a is fixed to the roller mounting bar EL9 by the lock bolt EL9d, and the position in the machine width direction is adjusted.

As shown in FIGS. 15 and 16, the “left film pressing roller 331H”, which is the second film pressing roller, is attached to the “fourth mounting portion EL24” via the roller mounting bar EL9.
That is, the roller mounting bar EL9 is mounted on the fourth mounting portion EL24 so as to project inward in the machine width direction, and the roller mounting bar EL9 is provided with the slider EL9a so as to be movable in the machine width direction. Other configurations are the same as in FIG.

As shown in FIGS. 8 and 9, the "first blade BL1", which is a blade BL, is attached to the "fifth mounting portion EL25" via the blade mounting arm EL4c.
That is, the base of the L-shaped blade mounting arm EL4c is fixed to the mounting block EL4. A mounting portion EL4d is provided at the tip of the blade mounting arm EL4c, and a plate-shaped first blade BL1 is fixed to the mounting portion EL4d by a mounting bolt EL4e. On the left soil covering member 321 side of the blade mounting arm EL4c, which is the upper part of the first blade BL1, a soil retaining plate PL is provided to prevent the soil from exceeding the first blade BL1. Similarly, on the right side of the soil covering member 324 of the blade mounting arm, which is the upper part of the fourth blade BL4, a soil retaining plate PL is provided to prevent the soil from exceeding the fourth blade BL4.

Since the "right mounting structure ER" which is the mounting structure E has a structure symmetrical to the "left mounting structure EL", the description thereof will be omitted.
FIG. 22 is a perspective view of the “intermediate mounting structure EM” which is the mounting structure E.
The intermediate mounting structure EM has a vertical portion EM1. The vertical portion EM1 is attached to the central mounting body 196M (see FIGS. 7, 10, 11, 14, 17, 17 and 18). A ridger 51 (51M) can be attached to the vertical portion EM1 (see FIG. 18). A mounting arm EM2 is projected rearward from the vertical portion EM1.

The mounting arm EM2 is composed of a pair of upper and lower parallel links. The base side of the parallel link is attached to the bracket EM1a provided on the vertical portion EM1 so as to be swingable in the vertical direction via the pivot shaft EM1b. A bracket EM3 is provided at the tip of the parallel link, and a pair of upper and lower parallel links are connected via a pivot shaft EM3a provided on the bracket EM3. A tension spring EM4 is interposed between a pair of upper and lower parallel links. A chain mounting portion EM5 is provided on the upper surface of the tip portion of the upper parallel link. At the lower part of the vertical portion EM1, the multi-film roll support portion EM6 is projected toward both sides in the machine width direction.

The first mounting portion EM21, the second mounting portion EM22, the fourth mounting portion EM24, and the fifth mounting portion EM25 are provided on the lower surface of the bracket EM3, and the third mounting portion EM23 is provided on the upper surface of the lower parallel link on the base side. There is.
As shown in FIGS. 10 and 11, the middle left soil covering member 322 and the middle right soil covering member 323, which are the first soil covering members, are attached to the “first mounting portion EM21”.

That is, the first mounting plate EM7 is mounted on the lower surface of the bracket EM3, the middle left soil covering member 322 is provided on the left side of the first mounting plate EM7, and the middle right soil covering member 323 is provided on the right side.
As shown in FIGS. 17 and 18, in the "second mounting portion EM22", the middle left soil covering member 322H for high ridges and the middle right soil covering member 323H for high ridges, which are the second soil covering members, are included in the second mounting plate EM8. It is attached via.

That is, the plate-shaped second mounting plate EM8 is attached to the lower surface of the bracket EM3, the stay EM8a hangs down from the rear end portion of the second mounting plate EM8, and the middle left soil covering member for high ridges is on the left side of the lower part of the stay EM8a. 322H is provided, and a middle right soil covering member 323H for high ridges is provided on the right side thereof (see FIG. 18). The middle left soil covering member 322H for high ridges is arranged on the front side in a plan view with respect to the middle right soil covering member 323H for high ridges.
As shown in FIGS. 10 and 11, the middle left film pressing roller 332 and the middle right film pressing roller 333, which are the first film pressing rollers, are attached to the "third mounting portion EM23" via the roller mounting bar EM9. ..

That is, the roller mounting bar EM9 is mounted on the third mounting portion EM23 so as to project in both the machine width directions. Sliders EM9a are provided on the roller mounting bars EM9 on both sides thereof so as to be movable in the machine width direction. An L-shaped roller mounting arm EM9b is provided on each slider EM9a so as to be swingable in the vertical direction. Rollers 333 are attached to each. A tension spring EM9c is provided between the roller mounting arm EM9b and the slider EM9a, and each roller 332 and 333 is urged in the ground contact direction. The slider EM9a is fixed to the roller mounting bar EM9 by the lock bolt EM9d, and the position in the machine width direction can be adjusted by loosening the lock bolt EM9d.

As shown in FIGS. 17 and 18, the "fourth mounting portion EM24" includes a middle left film pressing roller 332H for high ridges and a middle right film pressing roller 333H for high ridges, which are second film pressing rollers. It is mounted via the mounting bar EM9. The roller mounting bar EM9 is provided on the second mounting plate EM8 so as to project on both sides in the machine width direction.
That is, a roller mounting bar EM9 is provided on the lower surface of the plate-shaped second mounting plate EM8 mounted on the lower surface of the bracket EM3 so as to project in the left-right direction. The roller mounting bar EM9 on the left side is located on the front side in a plan view with respect to the roller mounting bar EM9 on the right side.

A slider EM9a is provided on each roller mounting bar EM9 so as to be movable in the machine width direction. An L-shaped roller mounting arm EM9b is provided on each slider EM9a so as to be swingable in the vertical direction. The middle right film presser roller 333H for ridges is attached to each. A tension spring EM9c is provided between the roller mounting arm EM9b and the slider EM9a, and the rollers 332H and 333H are urged in the grounding direction. The slider EM9a is fixed to the roller mounting bar EM9 by the lock bolt EM9d, and the position in the machine width direction is adjusted by loosening the lock bolt EM9d.

As shown in FIGS. 10 and 11, "second blade BL2 and third blade BL3", which are blade BLs, are attached to the "fifth mounting portion EM25" via the blade mounting member EM10.
That is, the blade mounting member EM10 is provided on the first mounting plate EM7 mounted on the lower surface of the bracket EM3. The blade mounting member EM10 has a vertical portion EM10a and a horizontal portion EM10b provided at the lower end of the vertical portion. The horizontal portion EM10b extends in the machine width direction. The second blade BL2 and the third blade BL3 are fixed to the horizontal portion EM10b by the bolt EM10c.

The second blade BL2 is arranged behind the middle left soil covering member 322. The inner side (left side) of the machine width of the second blade BL2 overlaps with the middle left soil covering member 322 in the machine width direction. The third blade BL3 is arranged behind the middle right soil covering member 323. The inner side (right side) of the machine width of the third blade BL3 overlaps with the middle right soil covering member 323 in the machine width direction.

The second blade BL2 and the third blade BL3 extend in the machine width direction and are arranged on the same straight line, but even if they are arranged so as to incline backward from the inside of the machine width to the outside of the machine width. good.
In the working machine 1 according to the embodiment of the present invention described above, the ridge forming apparatus A has a grooving member Z that cuts a groove in the field to form a flat ridge UN, and a high ridge UNH by raising ridges in the field. It includes a ridger 51 to be formed. Further, since the mounting structure E to which the flat ridge member used together with the grooving member Z and the high ridge member used together with the ridger 51 can be selectively attached is provided, one unit is provided. The work machine can be used for both flat ridges and high ridges.

<Arrangement structure of blades for flat ridges>
As shown in FIG. 12, the working machine 1 according to the embodiment of the present invention has a structure in which the multi-film 300F is covered with soil so that the multi-film 300F is not peeled off by wind or the like.
The working machine 1 shown in FIGS. 5 to 12 includes a ridge forming device A for forming a ridge UN in a field, a multi-film laying device 300 for laying a multi-film 300F on the ridge UN, and a ridge UN on which the multi-film 300F is laid. It is equipped with a planting device 39 for planting seedlings.

The multi-film laying device 300 includes a soil covering member DS that covers the end portion of the multi-film 300F with soil, and a soil covering member DS arranged in front of the planting device 39 and covering the end portion with the soil covering member DS on the upper surface of the ridge UN. It has a blade BL, which leads to a multi-film 300F covering the above.
As shown in FIG. 7, since the blades BL (BL1 to BL4) are arranged in front of the planting device 39, they are placed on the multi-film 300F before the seedling NE is planted in the ridge UN by the planting device 39. It will be covered with soil and leveled with the blade BL. A hole for planting is made in the multi-film 300F by the planting device 39, but when the wind blows, the wind enters from the hole and the multi-film 300F may be peeled off from the upper surface of the ridge UN. However, in the present embodiment, since the soil is put on the mulch film 300F before the hole for planting is opened, the peeling of the mulch film 300F due to the wind is eliminated.

The ridge forming apparatus A shown in FIGS. 4 and 5 is a grooving member Z that cuts a groove in a field cultivated by the cultivated portion 18 to form a ridge UN. Since the grooving member Z is provided on the rear cover 19B that moves up and down following the field surface, the depth of the groove formed by the grooving member Z even if the hilling depth by the hilling portion 18 fluctuates. Is constant from the surface of the ridge UN.
As shown in FIG. 12, the soil covering member DS is arranged behind the grooving member Z. The blade BL is arranged behind the soil covering member DS. According to this configuration, the end portion of the mulch film 300F on the groove formed by the grooving member Z can be efficiently covered with soil by the soil covering member DS. Further, the soil at the end thereof can be guided by the blade BL onto the multi-film 300F covering the upper surface of the ridge.

In the present invention, "rear" means "rear in the positional relationship in the front-rear direction", and the case of being displaced in the left-right direction is also included in "rear". Further, "rear" may be at least rearward by comparing the positions of the center positions in the front-rear direction. For example, the center of the blade BL in the front-rear direction may be arranged behind the center of the soil covering member DS in the front-rear direction. Further, the front end of the soil covering member DS may be located in front of the front end of the blade BL.

In the above configuration, the soil covering member DS and the blade BL are formed separately, but as described above, the soil covering member DS and the blade BL may be integrally formed.
Further, the positional relationship between the soil covering member DS and the grooving member Z in the left-right direction is adjusted (changed) by changing the position of the grooving member Z and / or the mounting structure E in the machine width direction (left-right direction). It is possible.
The arrangement relationship of the grooving member Z, the soil covering member DS and the blade BL will be described in more detail.

As shown in FIGS. 10 to 12, the soil covering member DS attached to the intermediate mounting structure EM is the middle left soil covering member 322 and the middle right soil covering member 323, and the blade BL is the second blade BL2 and the third blade BL3. Is.
On the left side of the intermediate mounting structure EM, a middle left film pressing roller 332 is arranged behind the grooving member Z so as to be located in the groove MZ cut by the grooving member Z. The middle left soil covering member 322 is arranged behind the middle left film pressing roller 332, and the second blade BL2 is further arranged behind the middle left soil covering member 322. The front end of the middle left soil covering member 322 is located closer to the inside of the machine than the groove MZ, and the rear end is located in the groove MZ. The right end of the second blade BL2 is in a position where it overlaps with the middle left soil covering member 322 in the machine width direction. The left end of the second blade BL2 reaches the planting position of the seedling NE on the upper surface of the first ridge UN1.

The middle left film pressing roller 332 bends and presses the end portion of the multi-film 300F1 laid on the first ridge UN1 along the side surface of the first ridge UN1 formed by the grooving member Z. The middle left soil covering member 322 arranged behind the middle left film pressing roller 332 covers the soil TU between the grooves on the bent end portion of the multi-film 300F1 and also covers the shoulder portion of the first ridge UN1. The second blade BL2 arranged behind the middle left soil covering member 322 was placed on the shoulder of the first ridge UN1 by moving above the multi-film 300F1 as shown by the arrow YT in FIG. The soil is guided to the upper surface of the first ridge UN1 and covered with the upper surface of the multi-film 300F1.

The middle right film pressing roller 333, the middle right soil covering member 323, and the third blade BL3 provided on the right side of the intermediate mounting structure EM sandwich the center of the transplanting machine in the machine width direction, and the middle left film pressing roller 332, It is arranged symmetrically with the middle left soil covering member 322 and the second blade BL2. Therefore, it has the same structure arrangement (positional relationship) and action (function) as the middle left film pressing roller 332, the middle left soil covering member 322, and the second blade BL2.

Further, the left film pressing roller 331 attached to the left mounting structure EL shown in FIGS. 8 and 9 is arranged so as to be located in the groove MZ formed by the grooving member Z (see FIG. 12). The left soil covering member 321 is arranged on the outer side (left side) of the machine body of the groove MZ. The end (left end) on the outer side of the machine body of the first blade BL1 is in a position where it overlaps with the end (right end) on the side of the machine body of the left soil covering member 321 in the machine width direction. The end (right end) of the first blade BL1 on the machine body side reaches the planting position of the seedling NE on the upper surface of the first ridge UN1.

The left film pressing roller 331 bends and presses the end portion of the multi-film 300F1 laid on the first ridge UN1 along the side surface of the first ridge UN1 formed by the grooving member Z. The left soil covering member 321 arranged behind the left film pressing roller 331 covers the soil TU between the grooves on the bent end portion of the multi-film 300F1 and also covers the shoulder portion of the first ridge UN1. The first blade BL1 arranged behind the left soil covering member 321 moves above the multi-film 300F1 to cover the shoulder of the first ridge UN1 as shown by the arrow YT in FIG. To the upper surface of the first ridge UN1 and cover the upper surface of the multi-film 300F1.

The right film pressing roller 334, the right soil covering member 324, and the fourth blade BL4 mounted on the right mounting structure ER sandwich the center in the machine width direction of the transplanter, and the left film pressing roller 331, the left soil covering member 321, and the left film pressing roller 331. It is arranged symmetrically with the first blade BL1. Therefore, it has the same arrangement (positional relationship) and action (function) as the left film pressing roller 331, the left soil covering member 321 and the first blade BL1.

<Multi-film mounting structure>
As shown in FIGS. 23 to 29B, the working machine 1 has a structure that facilitates attachment and detachment of the multi-film roll.
As shown in FIGS. 5, 6, 12, and 23, the multi-film laying apparatus 300 is a roll support shaft 300J in which the multi-film 300F is penetrated by a wound film roll 300R to support the film roll 300R over its entire length. And one support portion J1 that supports one end side of the roll support shaft 300J, and the other support portion J2 that supports the other end side of the roll support shaft 300J.

As shown in FIGS. 23 and 24, one end side (outside side of the machine body) of the roll support shaft 300J is removable from one support portion J1, and the other end side (side side inside the machine body) supports the other. It can swing with the portion J2 as a fulcrum. Specifically, the other end side of the roll support shaft 300J can swing in the vertical direction with the other support portion J2 as a fulcrum.
As shown in FIGS. 12 and 23, the roll support shaft 300J has a first roll support shaft 301 that supports the multi-film 300F1 laid on the first ridge UN1 and a second roll support shaft 301 adjacent to the first ridge UN1. It includes a second roll support shaft 302 that supports the multi-film 300F2 laid on the ridge UN2. The first roll support shaft 301 and the second roll support shaft 302 can swing independently.

As shown in FIG. 23, the one-sided support portion J1 has a first one-sided support portion J1a that supports one end side of the first roll support shaft 301 and a second one-sided support portion that supports one end side of the second roll support shaft 302. Includes J1b and. The other support portion J2 includes a first other support portion J2a that supports the other end side of the first roll support shaft 301, and a second other support portion J2b that supports the other end side of the second roll support shaft 302. ..

As shown in FIG. 12, the first other support portion J2a supports the other end side of the first roll support shaft 301 between the first ridge UN1 and the second ridge UN2. The second other support portion J2b supports the other end side of the second roll support shaft 302 between the first ridge UN1 and the second ridge UN2.
As shown by arrows Y2 in FIGS. 25 and 26, the one-side support portion J1 and the other support portion J2 can move in parallel with the axial direction of the roll support shaft 300J.

As shown in FIGS. 27 to 29B, the roll support shaft 300J is formed in a cylindrical shape. The other support portion J2 includes a support rod J3 that is inserted into the other end side of the roll support shaft 300J to support the other end side, a through shaft J3a that penetrates the support rod J3, and a through shaft J3a that penetrates the roll support shaft 300J. It has a holding member J3b that is rotatably held around the axis of the above.
On the other hand, the support portion J2 is movably arranged along the roll support shaft 300J, and can be moved to an allowable position that allows the roll support shaft 300J to rotate and a lock position that does not allow the roll support shaft 300J to rotate. It has a lock member J4.

This will be explained in more detail.
As shown in FIGS. 24 and 26, the first one-side support portion J1a supports one end side of the first roll support shaft 301. The first support portion J1a is provided on the left mounting structure EL. A multi-film roll support portion EL7 is provided on the vertical portion EL1V of the left mounting structure EL. The multi-film roll support portion EL7 is provided with a first support portion J1a.

The first one-side support portion J1a has a slider EL7a slidably provided on the multi-film roll support portion EL7 and an arm EL7b provided on the slider EL7a. The slider EL7a is fixed to the multi-film roll support portion EL7 by the lock bolt EL7c, and is positioned in the left-right direction.
A recess EL7d that opens upward to support one end side of the first roll support shaft 301 is provided at the tip of the arm EL7b. A lid material EL7e is provided to prevent the first roll support shaft 301 from detaching upward from the recess EL7d. One end of the lid material EL7e is rotatably attached to the tip of the arm EL7b by the pivot EL7f. The other end of the lid material EL7e is rotatably fixed to the tip of the arm EL7b by the lock bolt EL7g.

By loosening the lock bolt EL7g and opening the lid material EL7e upward, the first roll support shaft 301 can be freely attached to and detached from the recess EL7d on one end side (see arrow Y3 in FIG. 26).
As shown in FIG. 23, the second one-sided support portion J1b supports one end side of the second roll support shaft 302. The second one support portion J1b is provided in the right mounting structure ER. The second one-sided support portion J1b is symmetrical with the first one-sided support portion J1a with the center CL1 in the machine width direction of the transplanting machine interposed therebetween. The configuration of the second one-sided support portion J1b is the same as the configuration of the first one-sided support portion J1a.

As shown in FIGS. 24, 25, 27 to 29B, the first other support portion J2a supports the other end side of the first roll support shaft 301. The first other support portion J2a is provided in the intermediate mounting structure EM. A multi-film roll support portion EM6 is provided on the vertical portion EM1 of the intermediate mounting structure EM. The multi-film roll support portion EM6 is provided with a first other support portion J2a.

The first other support portion J2a has a slider EM6a slidably provided on the multi-film roll support portion EM6 and an arm EM6b provided on the slider EM6a. The slider EM6a is fixed to the multi-film roll support portion EM6 by the lock bolt EM6c, and is positioned in the left-right direction.
As shown in FIGS. 27 to 29B, the first roll support shaft 301 is formed in a cylindrical shape. The first other support portion J2a holds the support rod J3 at the tip of the arm EM6b, the penetrating shaft J3a penetrating the support rod J3, and the first roll support shaft 301 rotatably around the axis of the penetrating shaft J3a. It has a member J3b and.

That is, the support rod J3 has an axial center extending in the machine width direction K2, and is fixed to the tip end portion of the arm EM6b. The penetrating shaft J3a has an axial center extending in the front-rear direction K1, and penetrates the support rod J3 so that both ends thereof protrude from the support rod J3.
The front and rear ends of the through shaft J3a are inserted into holes provided in the cylindrical first roll support shaft 301 to support the first roll support shaft 301 on the support rod J3 so as to be rotatable in the vertical direction.
The holding member J3b is formed in a semicircular ring shape, one end thereof is swingably provided at one end of the through shaft J3a, and the other end is freely engaged with and detached from the other end of the through shaft J3a. A ring groove J3c is formed on the outer peripheral surface of the first roll support shaft 301 so as to accommodate the holding member J3b and prevent it from protruding from the outer peripheral surface of the first roll support shaft 301.

By disengaging the holding member J3b from the through shaft J3a and pulling out the through shaft J3a from the support rod J3, the other end of the first roll support shaft 301 can be attached to and detached from the support rod J3. The other end of the first roll support shaft 301 is inserted into the support rod J3, the through shaft J3a is inserted over the first roll support shaft 301 and the support rod J3, and the holding member J3b holds the first roll support shaft 301. The other end of the can be attached to the support rod J3. When the other end of the first roll support shaft 301 is attached to the support rod J3, the first roll support shaft 301 can be rotated (tilted) in the vertical direction around the axis of the through shaft J3a (FIG. 23, FIG. See the virtual line in FIG. 24). With this configuration, the multi-film roll 300R, which is a heavy object, can be easily attached to and detached from the film roll support shaft 300J.

As shown in FIGS. 25, 27, 29A, and 29B, the first other support portion J2a has a lock member J4. The lock member J4 is movably arranged along the first roll support shaft 301, and has an allowable position (see FIG. 29A) that allows rotation of the through shaft J3a of the first roll support shaft 301 around the axis, and a first. The roll support shaft 301 can be moved to a lock position (see FIG. 29B) that does not allow rotation around the through shaft J3a.

The lock member J4 is formed in a cylindrical body that is slidably fitted to the other end of the first roll support shaft 301. A lock bolt J4a is screwed into the lock member J4. An operation piece J4b is provided on the lock bolt J4a. By picking up the operation piece J4b and rotating the lock bolt J4a, it is possible to switch between a state in which the lock member J4 is fixed to the first roll support shaft 301 and a state in which the lock member J4 can be moved along the first roll support shaft 301. can.
As shown in FIG. 29A, by loosening the lock bolt J4a and placing the lock member J4 at a position where the end face thereof is away from the arm EM6b, the first roll support shaft 301 has a through shaft J3a as shown by a virtual line. It can be tilted downwards.

As shown in FIG. 29B, the lock member J4 is placed at a position where its end face contacts the arm EM6b, and the lock bolt J4a is tightened to fix the lock member J4 to the first roll support shaft 301. The roll support shaft 301 is prevented from tilting due to contact between the end surface of the lock member J4 and the arm EM6b.
The configuration of the second other support portion J2b that supports the other end side of the second roll support shaft 302 is the same as the configuration of the first other support portion J2a described above.
The high ridge working machine shown in FIGS. 13 to 19 also has the above-mentioned one support portion J1 and the other support portion J2.

<Suspension structure of mounting arm of multi-film laying device>
As shown in FIG. 2, the rotary tiller 2 has a rotary machine frame 11, and the transplanter 3 has a transplanter frame 37. The rotary machine frame 11 and the transplanting machine frame 37 are vertically and vertically connected by a connecting mechanism 41 composed of a parallel link mechanism. As a result, the rotary tiller 2 and the transplanter 3 are relatively movable in the vertical direction. That is, the transplanting machine 3 (transplanting machine frame 37) can move up and down with respect to the rotary tiller 2.

The front chairs 187A and 187 are provided on the rotary machine frame 11 so as to be vertically movable via the connecting mechanism 41. The rear chairs 187C and D are provided on the seat frame 197 connected to the rotary machine frame 11 via the parallel link mechanism 200. The seat frame 197 is supported in the field by wheels 206.
As shown in FIG. 30, the mounting arm EL2 of the multi-film laying device 300 is pivotally supported by the pivot shaft SZ so as to be vertically movable with respect to the rotary machine frame 11. The same applies to the mounting arms ER2 and EM2. The mounting arm EL2 and the transplanting machine frame 37 are connected via a chain CHN. This chain CHN is coupled to the chain mounting portion EL6 shown in FIG. 20 and the chain mounting portion EM5 shown in FIG. 22. As a result, the multi-film laying device 300 also rises as the transplanting machine frame 37 rises (see arrows Y4 and Y5 in FIG. 30).

FIG. 31 is an explanatory diagram of the vertical movement of the connecting mechanism 41.
The coupling mechanism 41 has a lower link 44A and an upper link 44C. The cylinder of the elevating drive device 42 is connected to the upper link 44C. When the lower link 44A swings up and down around the support shaft 161L by the drive of the elevating drive device 42, the upper link 44C swings up and down around the support shaft 161M. As a result, the chairs (first front chair 187A and second front chair 187B) supported by the chair support 150 and the transplanting machine 3 are integrally raised and lowered. Here, since the connecting link mechanism 44 is composed of the parallel link mechanism, the chairs 187A and 187B and the transplanting machine 3 move up and down in parallel with the ground.

The elevating drive device 42 has an elevating cylinder (hydraulic actuator) C1. The elevating cylinder C1 is composed of a hydraulic cylinder having a cylinder body C1a and a piston rod C1b. The tip of the piston rod C1b is pivotally supported by the upper support shaft 162. The upper support shaft 162 is attached to the middle portion of the upper link 44C in the front-rear direction. The bottom side of the cylinder body C1a is pivotally supported by the lower support shaft 163. The lower support shaft 163 is attached to the rotary machine frame 11.

When the elevating cylinder C1 is extended (the piston rod C1b is advanced from the cylinder body C1a), the upper link 44C and the lower link 44A swing upward, and the chair supported by the chair support 150 (first front chair 187A and). The second front chair 187B) and the transplanting machine 3 (machine frame 37) are raised. Further, when the elevating cylinder C1 is shortened (the piston rod C1b is retracted), the upper link 44C and the lower link 44A swing downward, and the chair supported by the chair support 150 (first front chair 187A and second). The front chair 187B) and the transplanting machine 3 (machine frame 37) are lowered. The elevating drive device 42 may be composed of an electric cylinder (electric actuator) or an electric hydraulic cylinder (electric hydraulic actuator).

The working machine 1 of the present embodiment has the effects described below.
Further, the working machine 1 includes a cultivated portion 18 that rotates around an axis 16 extending in the machine width direction to cultivate the field, a ridge forming device A that forms ridges UN in the field cultivated by the cultivated portion 18, and a ridge forming device A. A multi-film laying portion 300B for laying the multi-film 300F on the UN and a soil gathering member D for gathering soil on the multi-film 300F are provided, and the soil gathering member D includes a soil covering member DS for covering the end of the multi-film 300F with soil. It has a blade BL which is arranged inside in the machine width direction from the soil covering member DS and guides the soil covered at the end onto the multi-film 300F covering the upper surface of the ridge UN, and the blade BL is the soil covering member DS. It is configured as a separate body, is arranged at an angle with respect to the soil covering member DS in a plan view, and extends inward in the machine width direction.

According to this configuration, the soil gathered by the soil covering member DS can be guided on the multi-film 300F by the blade BL and covered with the soil.
Further, the inner end portion of the soil covering member DS in the machine width direction and the outer end portion of the blade BL in the machine width direction coincide with or overlap each other in the machine width direction.
According to this configuration, the soil gathered by the soil covering member DS can be efficiently guided onto the multi-film 300F by the blade BL and covered with the soil.

Further, the soil covering member DS is arranged so as to be inclined in a plan view so as to be inward in the machine width direction toward the rear.
According to this configuration, the soil covering member DS makes it easy to attract soil.
Further, it is provided with an angle adjusting mechanism EL8 capable of adjusting the angle of inclination of the soil covering member DS.
According to this configuration, the amount of soil to be gathered can be adjusted.

Further, the ridge forming device A includes a grooving member Z that cuts a groove in the field to form a flat ridge, and a ridger 51 that ridges the field to form a high ridge, and is used together with the grooving member Z. It is provided with a mounting structure E to which the flat ridge member to be formed and the high ridge member used together with the ridger 51 can be selectively attached.
According to this structure, by selectively attaching the flat ridge member and the high ridge member to the mounting structure E, one working machine can be used for both the flat ridge and the high ridge.

Further, the flat ridge member includes a first soil covering member that covers the end of the multi-film 300F laid on the flat ridge with soil in the width direction, and the high ridge member is the multi-film 300F laid on the high ridge. The mounting structure E includes a second soil covering member that covers the end portion in the width direction with soil, and the mounting structure E includes a first mounting portion EL21 to which the first soil covering member can be mounted and a second mounting portion EL22 to which the second soil covering member can be mounted. And have.

According to this configuration, one working machine has a first soil covering member that covers the end of the multi-film 300F laid on the flat ridge with soil in the width direction, and the multi-film 300F laid on the high ridge in the width direction. A second soil covering member for covering the end portion of the soil can be selectively attached.
Further, the flat ridge member includes a first film pressing roller that presses the end portion of the multi-film laid on the flat ridge in the width direction, and the high ridge member is a member for the high ridge in the width direction of the multi-film laid on the high ridge. The mounting structure E includes a second film pressing roller that presses the end portion, and the mounting structure E includes a third mounting portion EL23 to which the first film pressing roller can be attached, a fourth mounting portion EL24 to which the second film pressing roller can be attached, and the like. have.

According to this configuration, one working machine has a first film presser roller that presses the widthwise end of the multi-film laid on the flat ridge, and the widthwise end of the multi-film laid on the high ridge. A second film presser roller that presses the film can be selectively attached.
Further, the flat ridge member includes the blade BL, and the mounting structure E has a fifth mounting portion EL25 to which the blade BL can be mounted.

According to this configuration, the blade BL, which is a member for flat ridges, can be attached to the working machine as needed.
Further, the working machine 1 is a ridge forming device A for forming a ridge UN in a field, a multi-film laying device 300 for laying a multi-film 300F on the ridge UN, and a planting for planting seedlings on the ridge UN on which the multi-film 300F is laid. The multi-film laying device 300 includes a mounting device 39, and the multi-film laying device 300 is arranged in front of the soil covering member DS for covering the end portion of the multi-film 300F with soil and the planting device 39, and covers the end portion with the soil covering member DS. It has a blade BL that guides the collected soil onto a multi-film 300F that covers the upper surface of the ridge UN.

According to this configuration, the blade BL covers the mulch film 300F with soil before the planting device 39 makes a hole (planting hole) in the mulch film 300F, so that the mulch film 300F is prevented from peeling off due to strong wind or the like. can. Further, since the soil hung on the mulch film 300F is leveled by the blade BL, it is possible to prevent the seedlings from being buried in the soil.

Further, the ridge forming device A is provided with a cultivated portion 18 for cultivating the field, and the ridge forming device A is a grooving member Z for forming a ridge UN by cutting a groove in the field cultivated in the cultivated portion 18.
According to this configuration, the multi-film 300F is laid on the ridge UN (flat ridge) formed by cutting a groove in the field by the grooving member Z, and then the soil is covered on the multi-film 300F by the soil covering member DS and the blade BL. Therefore, it is possible to prevent the multi-film 300F from peeling off.

Further, the soil covering member DS is arranged behind the groove cutting member Z, and the blade BL is arranged behind the soil covering member DS.
According to this configuration, after the ridge UN (flat ridge) is formed by the groove cutting member Z, the soil is brought to the formed ridge UN (flat ridge) by the soil covering member DS, and the gathered soil is brought to the multi-film 300F by the blade BL. Can be put on top.

Further, the soil covering member DS is arranged at a position overlapping with the grooving member Z in the width direction of the multi-film 300F, and the blade BL extends from the end side to the center side of the multi-film 300F.
According to this configuration, the soil can be reliably attracted to the ridge UN (flat ridge) formed by the groove cutting member Z by the soil covering member DS, and the collected soil is centered from the end side of the multi-film 300F by the blade BL. It can be evenly covered toward the side.

Further, the soil covering member DS and the blade BL are formed separately.
According to this configuration, the soil covering member DS and the blade BL can be individually replaced at the time of maintenance or the like. The positional relationship between the soil covering member DS and the blade BL can be adjusted.
Further, the soil covering member DS and the blade BL are integrally formed.
According to this configuration, the soil covering member DS and the blade BL can be integrally attached and removed. The positional relationship between the soil covering member DS and the blade BL can be fixed.

Further, the working machine 1 includes a multi-film laying device 300 for laying a multi-film 300F on a ridge UN formed in a field, and the multi-film laying device 300 is penetrated by a film roll 300R around which the multi-film 300F is wound. It has a roll support shaft 300J that supports the film roll 300R over the entire length, a one-side support portion J1 that supports one end side of the roll support shaft 300J, and another support portion J2 that supports the other end side of the roll support shaft 300J. The roll support shaft 300J has one end detachable from the one support portion J1 and the other end side swingable with the other support portion J2 as a fulcrum.

According to this configuration, the roll support shaft 300J swings, so that the multi-film roll 300R, which is a heavy object, can be easily attached to and removed from the roll support shaft 300J.
Further, the other end side of the roll support shaft 300J can swing in the vertical direction with the other support portion J2 as a fulcrum.
According to this configuration, the roll support shaft 300J swings in the vertical direction, so that the heavy multi-film roll 300R can be easily attached to and detached from the roll support shaft 300J.

Further, the roll support shaft 300J includes a first roll support shaft 301 that supports the multi-film 300F laid on the first ridge UN1 and a multi-film laid on the second ridge UN2 adjacent to the first ridge UN1. The second roll support shaft 302 that supports the 300F is included, and the first roll support shaft 3011 and the second roll support shaft 302 can swing independently.
According to this configuration, the multi-film roll 300R can be easily attached to and detached from each of the support shafts 301 and 302 individually.

Further, the one-side support portion J1 includes a first one-side support portion J1a that supports one end side of the first roll support shaft 301, and a second one-side support portion J1b that supports one end side of the second roll support shaft 302. The other support portion J2 includes a first other support portion J2a that supports the other end side of the first roll support shaft 301, and a second other support portion J2b that supports the other end side of the second roll support shaft 302. include.
According to this configuration, the multi-film roll 300R can be easily attached to and detached from each of the support shafts 301 and 302 individually.

Further, the first other support portion J2a supports the other end side of the first roll support shaft 301 between the first ridge UN1 and the second ridge UN2, and the second other support portion J2b is the first. The other end side of the second roll support shaft 302 is supported between the ridge UN1 and the second ridge UN2.
According to this configuration, the multi-film roll 300R can be attached and detached from both sides in the machine width direction, so that it can be easily attached and detached.
Further, the one support portion J1 and the other support portion J2 can move in parallel with the axial direction of the roll support shaft 300J.

According to this configuration, the position and width of the multi-film roll 300R can be changed according to the position and width of the ridge UN.
Further, the roll support shaft 300J is formed in a cylindrical shape, and the other support portion J2 is a support rod J3 that is inserted into the other end side of the roll support shaft 300J to support the other end side, and a support rod J3. It has a penetrating shaft J3a and a holding member J3b that rotatably holds the roll support shaft 300J around the axis of the penetrating shaft J3a.

According to this configuration, the roll support shaft 300J can be easily and surely tilted.
On the other hand, the support portion J2 is movably arranged along the roll support shaft 300J, and moves to an allowable position that allows the roll support shaft 300J to rotate and a lock position that does not allow the roll support shaft 300J to rotate. It has a possible lock member J4.
According to this configuration, it is possible to prevent the roll support shaft 300J from tilting when the roll support shaft 300J does not need to be tilted.

Although one embodiment of the present invention has been described above, it should be considered that the embodiments disclosed this time are exemplary in all respects and are not restrictive. The scope of the present invention is shown by the scope of claims rather than the above description, and is intended to include all modifications within the meaning and scope of the claims.

1 Working machine 16 shaft 18 Tilling part 39 Planting device 51 Ridge device 300 Multi-film laying device 300B Multi-film laying part 300F Multi-film 300J Roll support shaft 300R Multi-film roll 301 1st roll support shaft 302 2nd roll support shaft 321 ~ 324 First soil covering member (member for flat ridge)
331 to 334 1st film presser roller (member for flat ridge)
BL blade (member for flat ridges)
321H-324H Second soil covering member (high ridge member)
331H to 334H 2nd film presser roller (high ridge member)
A Ridging device BL blade D Earth gathering member DS Earth covering member E Mounting structure EL8 Angle adjustment mechanism EL21 1st mounting part EL22 2nd mounting part EL23 3rd mounting part EL24 4th mounting part EL25 5th mounting part J1 One side support part J1a 1st one support part J1b 2nd one support part J2 other support part J2a 1st other support part J2b 2nd other support part J3 support rod J3a through shaft J3b holding member J4 lock member K2 machine width direction UN ridge UN1 1st ridge UN2 2nd ridge Z grooving member

Claims (22)

1. A cultivated part that rotates around an axis extending in the width direction to cultivate the field,
   A ridge forming device for forming ridges in a field cultivated in the cultivated area, and a ridge forming device.
   The multi-film laying part for laying the multi-film on the ridges,
   A soil gathering member that pulls soil onto the mulch film,
   Equipped with
   The soil gathering member is
   A soil covering member that covers the end of the mulch film with soil,
   It has a blade, which is arranged inside in the machine width direction from the soil covering member and guides the soil covered on the end portion onto a mulch film covering the upper surface of the ridge.
   The blade is a working machine that is configured separately from the soil covering member, is arranged at an angle with respect to the soil covering member in a plan view, and extends inward in the machine width direction.
2. The working machine according to claim 1, wherein the inner end portion of the soil covering member in the machine width direction and the outer end portion of the blade in the machine width direction coincide with or overlap each other in the machine width direction.
3. The working machine according to claim 1 or 2, wherein the soil covering member is arranged so as to be inclined in a plan view so as to go inward in the machine width direction toward the rear.
4. The working machine according to claim 3, further comprising an angle adjusting mechanism capable of adjusting the angle of inclination of the soil covering member.
5. The ridge forming apparatus includes a grooving member for cutting a groove in a field to form a flat ridge, and a ridger for forming a high ridge by erecting a ridge in the field.
   1. The working machine described in the section.
6. The flat ridge member includes a first soil covering member that covers the widthwise end of the mulch film laid on the flat ridge with soil.
   The high ridge member includes a second soil covering member that covers the widthwise end of the mulch film laid on the high ridge with soil.
   The working machine according to claim 5, wherein the mounting structure has a first mounting portion to which the first soil covering member can be mounted and a second mounting portion to which the second soil covering member can be mounted.
7. The flat ridge member includes a first film pressing roller that presses the widthwise end of the multi-film laid on the flat ridge.
   The high ridge member includes a second film pressing roller that presses the widthwise end of the multi-film laid on the high ridge.
   The attachment structure according to claim 5 or 6, wherein the attachment structure has a third attachment portion to which the first film presser roller can be attached and a fourth attachment portion to which the second film presser roller can be attached. Working machine.
8. The flat ridge member includes the blade.
   The working machine according to any one of claims 5 to 7, wherein the mounting structure has a fifth mounting portion to which the blade can be mounted.
9. A ridge forming device that forms ridges in the field,
   A multi-film laying device that lays multi-film on the ridges,
   A planting device for planting seedlings in the ridges on which the multi-film is laid, and
   Equipped with
   The multi-film laying device is
   A soil covering member that covers the end of the mulch film with soil,
   A working machine having a blade arranged in front of the planting device and guiding the soil covered on the end portion by the soil covering member onto a mulch film covering the upper surface of the ridge.
10. The working machine according to claim 9, further comprising a cultivated portion for cultivating the field, wherein the ridge forming device is a grooving member for cutting a groove in the field cultivated in the cultivated portion to form a ridge.
11. The soil covering member is arranged behind the grooving member.
    The working machine according to claim 10, wherein the blade is arranged behind the soil covering member.
12. The soil covering member is arranged at a position overlapping with the grooving member in the width direction of the multi-film.
    The working machine according to claim 11, wherein the blade extends from the end side to the center side of the multi-film.
13. The working machine according to any one of claims 9 to 12, wherein the soil covering member and the blade are formed separately.
14. The working machine according to any one of claims 10 to 12, wherein the soil covering member and the blade are integrally formed.
15. Equipped with a multi-film laying device that lays multi-film on the ridges formed in the field.
    The multi-film laying device is
    A roll support shaft through which the multi-film is wound and supports the film roll over the entire length,
    A one-sided support portion that supports one end side of the roll support shaft,
    The other support portion that supports the other end side of the roll support shaft, and the other support portion.
    Have,
    The roll support shaft is a work machine in which one end side is removable from the one support portion and the other end side is swingable with the other support portion as a fulcrum.
16. The working machine according to claim 15, wherein the roll support shaft can swing in the vertical direction with the other end side as a fulcrum with the other end support portion as a fulcrum.
17. The roll support shaft includes a first roll support shaft that supports the multi-film laid on the first ridge, and a second roll that supports the multi-film laid on the second ridge adjacent to the first ridge. Including the support shaft,
    The working machine according to claim 15 or 16, wherein the first roll support shaft and the second roll support shaft can swing independently.
18. The one-sided support portion includes a first one-sided support portion that supports one end side of the first roll support shaft and a second one-sided support portion that supports one end side of the second roll support shaft.
    The other claim includes a first other support portion that supports the other end side of the first roll support shaft, and a second other support portion that supports the other end side of the second roll support shaft. 17. The working machine according to 17.
19. The first other support portion supports the other end side of the first roll support shaft between the first ridge and the second ridge.
    The working machine according to claim 18, wherein the second other support portion supports the other end side of the second roll support shaft between the first ridge and the second ridge.
20. The working machine according to any one of claims 15 to 19, wherein the one support portion and the other support portion can move in parallel with the axial direction of the roll support shaft.
21. The roll support shaft is formed in a cylindrical shape and has a tubular shape.
    The other support portion includes a support rod inserted into the other end side of the roll support shaft to support the other end side, a penetrating shaft penetrating the support rod, and the roll support shaft around the axis of the penetrating shaft. The working machine according to any one of claims 15 to 20, further comprising a holding member that is rotatably held.
22. The other support portion is movably arranged along the roll support shaft, and can be moved to an allowable position that allows rotation of the roll support shaft and a lock position that does not allow rotation of the roll support shaft. The working machine according to claim 21, which has a lock member.

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