JPH10215705A - Multi-working device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a multi-working device to spread a sheet without destroying ridges in a farm land where ridges are previously formed. SOLUTION: This multi-working device is provided with a sheet spreading mechanism spreading the wide sheet S along with advance on a previously formed ridge A, a fetching mechanism 7 fetching soil between cropped places at the ridge A and soil supplying mechanisms 16 and 19 placing the fetched soil on a part between the cropped places at the sheet S spread on the ridge A from an upper side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-working apparatus for laying a wide sheet on a ridge formed in advance as the sheet progresses.

[0002]

2. Description of the Related Art An example of a multi-working device is the Japanese Utility Model Publication No. 61-4.
No. 0124. In this multi-working device, a plurality of ridges are formed by a compact (5 in FIGS. 1 and 3 of the above publication) while cultivating a field by a rotary tilling device (2 in FIG. 1 of the above publication). Is formed, and a wide sheet (8 in FIGS. 1 and 2 of the above-mentioned publication) is spread over the formed plurality of ridges. In this case, a part of the soil that is flipped up with the tillage by the rotary tillage device is placed from above on the portion between the ridges and both ends of the sheet laid on the ridge, and the laid sheet is exposed to wind or the like. It is held down so that it does not move.

[0003]

As described above, in a multi-working apparatus for laying a sheet while forming a ridge by tilling by a rotary tilling apparatus as described above, the ridge must be provided after the multi-work for laying the sheet is completed. Crop planting cannot be performed (a hole is made in a part of the sheet with heat or the like, and planting is performed in this part).

On the other hand, in the case of potato crops such as potatoes, for example, as shown in FIG. A groove is formed, and a seed potato T is planted in the groove.
Next, for example, as shown in FIG. 5 (b), the soil between the planted potatoes T is plowed left and right while plowing the portion between the planted potatoes T with a walking tiller (not shown) or the like. There is a case where an operation of covering the soil from the upper side to form the ridge A is performed. As described above, it is impossible to use a multi-tasking device having a wide range of rotary tilling devices as described in [Prior Art] in a state where crops are already planted in the ridges (rotary tilling). The equipment breaks the ridges and potatoes).

In the multi-working device described in [Prior Art], the rotary tilling device is configured to be able to be lifted greatly, and the rotary tilling device is used to plow only the upper part of the ridge to fly the soil. It is also conceivable that the ridges are placed on the portions between the ridges and both ends of the ridged sheet from above, so that the crop in the ridges is not damaged by the rotary tillage device. However, even if it can be constituted in this way, since the soil at the top of the ridge will be collapsed and the ridge will be lowered, it is not preferable for crops in the ridge and growth of the crop may be hindered. . An object of the present invention is to provide a multi-tasking device that can lay sheets without hindrance in a field where ridges are already formed.

[0006]

[Means for Solving the Problems]

[I] According to the feature of claim 1, a wide sheet is laid on a ridge formed in advance with progress, and soil (or crops) between cropping points where crops are planted in the ridges. The soil between the cropping locations scheduled to be cropped is taken out. As a result, the taken-out soil is placed from above on the portion between the cropping locations where the crop is planted on the sheet (or the portion between the cropping locations where the crop is to be planted), and the sheet is pressed down. .

[0007] As described above, by using the soil between the planting locations where the crops are planted in the ridge (or the soil between the planned planting locations where the crops are to be planted) for holding the sheet, the ridges are used. Even if crops are already planted in the ridge (or even if no crop is planted on the ridges), the crops on the ridges and the tops of the ridges will not be destroyed. It is possible to spread the sheet and hold the sheet with the soil.

[0008] According to the second aspect of the present invention, a wide sheet is laid on a plurality of ridges formed in advance with progress, soil between the ridges is taken out, and ridges on the sheet are taken out. The soil taken out is placed from above on the portion between and the sheet is pressed. As described above, by using the soil between the ridges to hold the sheet, even when the crops are already planted in the ridges, the sheets are laid without crushing the ridges and the crops. Can hold down the sheet. In this case, since the soil between the ridges is taken out by the take-out mechanism, the ridges are hardly disintegrated, only a little deeper between the ridges.

[III] According to the feature of claim 3, similar to the case of claim 1 or 2, the "action" described in the above [I] or [II] is provided. It has various “actions”. According to the feature of claim 3, in a wide sheet (a sheet straddling a plurality of ridges), a portion between cropping locations where a crop is planted (or a portion between cropping locations where a crop is to be cropped). In addition to (the part between the ridges), soil is also placed on the edge of the sheet from above. In this way, by pressing the end of the sheet with the soil, the entire sheet is reliably pressed.

[IV] According to the feature of claim 4, a wide sheet is laid on a plurality of ridges formed in advance as the traveling proceeds, soil between the ridges is taken out, and the ridges on the sheet are taken out. The taken-out soil is placed from above on the portion between and the ends of the sheet, and the sheet is pressed. As described above, by using the soil between the ridges to hold the sheet, even when the crops are already planted in the ridges, the sheets are laid without crushing the ridges and the crops. Can hold down the sheet. In this case, since the soil between the ridges is taken out by the take-out mechanism, the ridges are hardly disintegrated, only a little deeper between the ridges.

According to a fourth aspect of the present invention, there is provided a soil collecting mechanism for bringing soil from the field to the end of the sheet laid on the ridge and placing the soil from above. Thereby, the soil taken out from between the ridges is placed on the portion between the ridges of the sheet and one end of the sheet from above, and the soil taken out from between the ridges is supplied to the other end of the sheet. Instead, it is possible to configure so that the soil by the soil collecting mechanism is placed from above. With this configuration, without dispersing a large amount of soil taken out from between the ridges, a portion between the ridges in the sheet,
In addition, the sheet can be concentrated on one end of the sheet and placed from above.

Conversely, the soil taken out between the ridges is placed on the sheet between the ridges and on both ends of the sheet from above, and the soil brought by the soil collecting mechanism is also placed on the ends of the sheet from above. It is also possible to configure so that it is mounted. With this configuration, a large amount of soil is placed on the end of the sheet from above. Claim 4 as described above.
According to the feature, a large amount of soil can be placed on the portion between the ridges and on both ends of the sheet extending over the plurality of ridges, so that the entire sheet can be reliably held down.

[V] According to the feature of claim 5, claim 3
Or, similarly to the case of 4, it has the “action” described in the preceding section [III] or [IV], and in addition to this, has the following “action”. According to the feature of claim 5, the end of the sheet laid on the ridge is pressed by the pressing mechanism,
With the wrinkles of the sheet extended, the soil is placed on the end of the sheet from above. In this case, since the soil is placed from above on the sheet in the vicinity of the portion of the sheet to be pressed by the pressing mechanism, the soil is placed on the sheet edge from above without delay with the wrinkles of the sheet extended by the pressing mechanism. Thus, after the wrinkles extended by the pressing mechanism away from the end of the sheet are regenerated, a state in which the soil is placed on the end of the sheet from above does not occur.

[VI] According to the feature of claim 6, as in any one of claims 1 to 5, the above [I]
To [V], and has the following “action” in addition to the “action”. According to the feature of claim 6, when the soil taken out by the take-out mechanism is supplied to the sheet side by the soil supply mechanism, the soil is supplied to the sheet side while applying vibration to the soil supply mechanism. As a result, even when soil is stagnating in the soil supply mechanism, the soil is supplied to the sheet side without stagnating due to vibration.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, a transmission case 1 is provided with one traveling wheel 2 at a lower portion, an engine 3 at a front portion of the transmission case 1, a steering wheel 4 at an upper portion of the transmission case 1, and a transmission. A walking type working machine is provided with a hitch 5 at the rear of the case 1.

A transparent sheet S straddling two ridges A
Is connected to the hitch 5, and the multi-working device will be described next. As shown in FIGS. 1 and 2, a support case 6 connected to the hitch 5
A support frame 9 having a width equal to the width of the two ridges A is fixed, and an arm 10 is fixed to both ends of the support frame 9 downward, and a support wheel 11 is provided on the arm 10. The arm 10 is configured to be extendable and retractable and can be fixed at a desired length, so that the height of the support wheel 11 can be adjusted. A support frame 12 extends laterally outward from the arm 10, and the roll body S <b> 1 of the sheet S is rotatably supported over the ends of the left and right support frames 12.

In the arm 10, an arm 13 is supported around the horizontal axis P1 so as to be vertically swingable. The arm 13 is provided with a tread wheel 14, and the arm 13 is urged downward by a toggle spring 15. Accordingly, as the sheet S is spread as described later, the left and right tread wheels 14 press the ends of the sheet S. When the work is not performed, the arm 13 is lifted and lifted by the toggle spring 15. Keep it in a state.

As shown in FIG. 1 and FIG.
A pair of rotary claws 7 for scraping the soil is provided on both left and right sides of the lower part of the vehicle. Power from the transmission case 1 is transmitted to the input shaft 6 a of the support case 6 via the transmission belt 8 and transmitted to the rotary claws 7. Is done. As shown in FIG. 2, the interval between the left and right rotating claws 7 is set to be as narrow as the width B1 between adjacent ridges A, and the rotating claws 7 are driven to rotate clockwise in FIG.

As shown in FIGS. 1, 2, and 4, an earth guide plate 16 slightly wider than the interval between the right and left rotary claws 7 is fixed to the support case 6. The soil guide plate 16 is formed in a U-shaped cross section with the lower side opened, and is set obliquely rearward and upward. A support plate 17 having a U-shaped cross section having an open upper side is fixed to an upper portion of the earth guide plate 16, and a support plate 18 having a U-shaped cross section having an open upper side is vertically moved around a horizontal axis P2 of the support plate 17. A pair of left and right soil supply members 19, which are swingably supported and made of hard rubber and are made of rain gutter, are fixed to the support plate 18.

As shown in FIG. 4, an arm 18a fixed to the support plate 18 extends toward the support case 6, and the arm 6b is fixed to the input shaft 6a of the support case 6, and the arms 18a and 6b It is connected via the link 20. With the above structure, the support plate 18 and the soil supply member 19 are driven to swing up and down around the horizontal axis P2 by the rotation of the arm 6b.

Next, a multi-work in which the sheet S is spread over two ridges A will be described. In the case of potato crops such as potatoes, for example, as shown in FIG. 5A, in a field C where a ridge A has not yet been formed, a groove is formed at a place where the ridge A is to be formed, and this groove is formed. Seed potato T is planted. Next, for example, as shown in FIG. 5B, the portion between the planted potatoes T planted as shown in FIG. The ridge A is formed by covering the soil from above.

Next, as shown in FIG. 2 and FIG. 3, the wheel 2 of the walk-behind work machine is positioned between the two ridges A B1, and the support wheels 11 of the multi-working device are placed between the ridges A at B2 and B3. 1 and 2, the worker holds the steering handle 4 of the walking-type working machine by hand, stands on the front side of the walking-type working machine (the left side of the paper of FIGS. 1 and 2), and proceeds to the left of the papers of FIGS. 1 and 2. I will do it.

As a result, the roll body S1 of the sheet S rotates counterclockwise in FIG. 1 as the sheet S advances, and both ends of the sheet S are moved by the treading wheel 14 between the ridges B2 and B3.
The sheet S is spread over the two ridges A while being pressed. At the same time, two ridges A are formed by the rotating claw 7.
During the period, the soil of B1 is scraped up, passes through the left and right soil supply members 19 from the support plate 18 along the ceiling surface of the soil guide plate 16,
Soil is supplied to B2 and B3 during ridge A, and soil is placed on both ends of sheet S from above.

When the soil of B1 is scraped up between the two ridges A by the rotary claw 7, soil other than the soil entering the left and right soil supply members 19 is removed from the upper side of the support plate 18 between the left and right soil supply members 19. In addition, the sheet passes between the lower side of the support plate 18 and the roll body S1 of the sheet S, is supplied to the space B1 between the two ridges A, and the soil is loaded from above the sheet S in the space B1 between the two ridges A.

When the support plate 18 and the soil supply member 19 are
Since the soil is driven to swing upward and downward around the soil 2, the soil is supplied to the spaces B2 and B3 between the ridges A through the support plate 18 and the left and right soil supply members 19 without stagnation.
As shown in FIGS. 2 and 3, the exit of the soil supply member 19 is located near the portion of the sheet S pressed by the tread wheel 14, and the soil is placed on the sheet S from above.

When the sheet S is laid over the two ridges A as described above (see the state shown in FIG. 5C), then, as shown in FIG.
As shown in (d), the sheet S is spread over the two adjacent ridges A. In this case, in the space B3 between the ridges A, the end of the sheet S is already spread and the soil is placed from above. As a result, as shown in FIG. 5 (d), the wheel 2 of the walk-behind work machine is moved between the two adjacent ridges A B4 and travels. While the part is pressed by B3 and B5 between ridges A (in B3 between ridges A while being pressed by the end of the already laid sheet S and the soil), the sheet S is pressed by two adjacent ridges A. It is straddled and spread. At the same time, as described above, the soil in the space B4 between the two ridges A is scraped up by the rotating claw 7 and supplied to the space B4 between the two ridges A and the spaces B3 and B5 between the ridges A. Soil is loaded from.

As described above, between the two ridges A, B1,
The sheet S is laid every two ridges A while using the soil of B4 for holding the sheet S. In the adjacent portion of the sheet S (between the ridges A B3), the sheet S is laid from below. The edge, the soil, the edge of the sheet S, and the soil are in a state where the edge of the adjacent sheet S and the soil are overlapped. When the buds grow from the seed tuber T and come out of the ridge A after the sheet S is laid, the buds in the sheet S are opened with a knife or the like.

[First Embodiment of the Invention] The multi working device may be configured as shown in FIGS. 6 and 7. As shown in FIGS. 6 and 7, a soil supply member 19 corresponding to B1 and B4 between two ridges A is fixed to a support plate 18, and a total of three soil supply members 19 are provided. 19 is configured to be driven to swing up and down. An arm closing disk 21 that can be switched between a ground contact position and a lifting position is provided on the arm 13 of the left and right tread wheels 14. Inside the upper part of the soil guide plate 16, the soil from the rotating claw 7 is supplied to the right and center soil supply members 1.
A switching mechanism (not shown) is provided which can be selectively operated to supply the soil from the rotating claw 7 to the soil supply member 19 on the left and the center.

As shown in FIGS. 7 and 8 (a), when there is a sheet S laid in the previous step on the left side, the left porcelain disc 21 is set to the lifting posture, and the right porcelain disc is set. 21 is set to the ground contact posture, and the switching mechanism is set to a state in which the soil is supplied to the left and center soil supply members 19. As a result, the soil from the rotating claw 7 is applied to the center of the sheet S (between the two ridges A B1) and the left end portion (between the ridges A B2) via the left and center soil supply members 19 from above. Put on. Soil is not supplied to the right end portion (between the ridges B3) of the sheet S from the right soil supply member 19, but the soil of the ridges A between the ridges B3 is brought close by the ground contacting disk 21 on the right side. Then, the sheet S is placed on the right end of the sheet S from above.

After the process shown in FIGS. 7 and 8 (a), as shown in FIG. 8 (b), when there is a sheet S laid in the previous process on the right side, the right porcelain disc 21 is removed. The switching mechanism is set to a state in which the soil is supplied to the right and center soil supply members 19 by setting the left-side earth approaching disk 21 to the grounding attitude, setting the soiling disk 21 on the left side to the grounding attitude. Thereby, the sheet S
At the center (between the two ridges A4) and the right end (between the ridges A3), the soil from the rotary claw 7 is placed from above via the right and center soil supply members 19. The soil is not supplied to the left end portion (between the ridges B5) of the sheet S from the left soil supply member 19, but the soil in the ridges A between the ridges B5 is gathered by the left soil contact disk 21 in the ground contact state. Then, the sheet S is placed on the left end of the sheet S from above. In the multi-working device shown in FIGS. 6 and 7, the soil from the rotary claw 7 may be supplied to the three soil supply members 19 at the center, right and left simultaneously without the switching mechanism.

[Second Alternative Embodiment of the Invention] FIGS. 1 and 2
In the multi-operation device shown in FIG.
The arm 13 extends from the support frame 9 as shown in FIG. 9 and the tread wheel 14 corresponding to B1 and B4 between the two ridges A is provided.
, A total of three tread wheels 14 may be provided.

Similarly, the multi-working device shown in FIGS. 6 and 7 may be provided with the tread wheels 14 corresponding to the spaces B1 and B4 between the two ridges A. In the walking type working machine in which the multi-working device shown in FIGS. 1, 2, 6, 7, and 9 is connected to the hitch 5, a pair of left and right wheels 2 is provided at a lower portion of a transmission case 1, and the left and right wheels 2 are shown in FIG. Between ridge A shown in B2, B3
, The distance between the left and right wheels 2 may be set to be wide.

[Third Alternative Embodiment of the Invention] The multi working device may be configured as shown in FIG. As shown in FIG. 10, the rotary claw 7 extends from the support case 6 to the left and right to the drive shaft 22, and the rotary claw 7 similar to FIGS. 1 and 2 is fixed to the drive shaft 22 on the support case 6 side. A rotary claw 23 having a slightly wide rake face of soil is fixed to the end of the drive shaft 22, and the partition disk 24 is freely rotatably supported on the end of the drive shaft 22. Soil guide plates 16 and 26 for rotating claws 7 and 23
And support plates 17, 18, as shown in FIGS.
It does not include the soil supply member 19 and the switching mechanism shown in [First Alternative Embodiment of the Invention].

As a result, as shown in FIG.
Is located at B1 between the two ridges A, and the rotary claw 23 is located at B2 and B3 between the ridges A.
1 is lifted by the rotating claw 7 and the soil guide plate 16
Is supplied to the space B1 between the two ridges A along the ceiling surface of the sheet S, and the soil is placed from above the sheet S. The soil in B3 between the ridges A is scraped up by the rotating claws 23, is supplied to the B3 between the ridges A along the ceiling surface of the soil guide plate 26, and is placed from above the sheet S.

In the space B2 between the ridges A, the end of the sheet S laid in the previous step is lifted by a lifting member 25 provided at the front end of one of the soil guide plates 26. The end and the rotary claw 23 are partitioned by a partition disk 24. As a result, the rotating claw 23 can be used without touching the end of the sheet S laid in the previous process.
Rakes up the soil, and the soil is supplied to the space B2 between the ridges A along the ceiling surface of the soil guide plate 26 and is placed from above the sheet S.

[Fourth Embodiment of the Invention] FIGS. 6 and 7
In the multi-operation device shown in (1), the sheet S may be laid in the following field. Instead of the semicircular ridge A shown in FIG. 3, a wide flat ridge A is formed as shown in FIG. Thereby, in the multi-operation device shown in FIGS.
1 is set to the ground contact state, the wheel 2 and the rotating pawl 7 of the walking type work machine are located at the left and right central portions of the ridge A, and the earth approaching disc 21 is grounded at both ends of the ridge A.

As a result, the soil is scraped up from the left and right central portions of the ridge A by the rotating claw 7, and the scraped up soil is supplied to the left and right central portions and both ends of the sheet S and placed on the sheet S from above. The soil in the field brought by the disk 21 is placed on both ends of the sheet S from above. After laying the sheet S on the ridge A as described above, FIG.
As shown in (c), a hole is formed in the sheet S by heat or the like to plant the crop D.

[0038]

According to the first aspect of the present invention, in a field in which ridges have already been formed, soil between cultivation sites where crops are cultivated in the ridges (or between soils where crops are to be cultivated). By using the soil) for holding the sheet, it is possible to obtain a multi-working device capable of laying the sheet and holding the sheet with the soil without breaking the crop or the upper part of the ridge that is being planted on the ridge. I was able to. In this way, crops planted on the ridges and the upper portion of the ridges are not broken, so that poor growth of the crops can be prevented.

According to the feature of the second aspect, in a field where ridges have already been formed, the soil between the ridges is used for holding the sheet, so that the crops and ridges formed on the ridges are not broken. Thus, a multi-operation device capable of laying a sheet and holding the sheet with soil was obtained. Since the crops and the ridges formed on the ridges are not destroyed in this way, poor growth of the crops can be prevented beforehand. In this case, since the soil between the ridges is taken out by the take-out mechanism, the ridges are hardly disintegrated to the extent that the ridges are slightly deepened, so that poor growth of the crop can be further prevented.

According to the features of claim 3, claim 1 or 2
"Effects of the Invention" of Claim 1 or 2 as in the case of
It has. According to the feature of claim 3, in a wide sheet (a sheet straddling a plurality of ridges), a portion between cropping locations where a crop is planted (or a portion between cropping locations where a crop is to be cropped). In addition to (the part between the ridges), soil is also placed on the edge of the sheet from above,
The entire sheet can be reliably held down. As a result, the state in which the sheet moves due to the wind or the like can be further suppressed, and poor growth of the crop can be further prevented.

According to the feature of the fourth aspect, in a field where ridges have already been formed, the soil between the ridges is used for holding the sheet, so that the crops and ridges formed on the ridges are not broken. Thus, a multi-operation device capable of laying a sheet and holding the sheet with soil was obtained. Since the crops and the ridges formed on the ridges are not destroyed in this way, poor growth of the crops can be prevented beforehand. In this case, since the soil between the ridges is taken out by the take-out mechanism, the ridges are hardly disintegrated to the extent that the ridges are slightly deepened, so that poor growth of the crop can be further prevented. Claim 4
By equipping the soil of the field to the end of the sheet laid on the ridge like the feature of
As a lot of soil can be put on the part between the ridges and on both ends in the sheet spanning multiple ridges,
The entire sheet can be reliably held down. As a result, the state in which the sheet moves due to the wind or the like can be further suppressed, and poor growth of the crop can be further prevented.

According to the feature of claim 5, claim 3 or 4
The effect of the invention according to claim 3 or 4 as in the case of
It has. According to the feature of claim 5, the sheet can be spread well with the finish extended without wrinkles, so that the wrinkled portion of the sheet is broken by the wind and the rainwater stays in the wrinkled portion beforehand. Can be prevented.

According to the feature of the sixth aspect, the "effect of the invention" of any one of the first to fifth aspects is provided similarly to the case of any one of the first to fifth aspects. According to the feature of claim 6, since the soil is supplied to the sheet side while the vibration is applied to the soil supply mechanism, it is possible to prevent the stagnation and clogging of the soil in the soil supply mechanism beforehand, and the operation of the multi-working device can be prevented. Performance could be improved.

[Brief description of the drawings]

FIG. 1 is an overall side view of a walking-type working machine and a multi-working device.

FIG. 2 is a plan view showing a state in which a sheet is laid by a multi-operation device.

FIG. 3 is a rear view in a state where a sheet is laid by the multi-tasking device.

FIG. 4 is a side view showing a structure for applying vibration to the soil supply member.

FIG. 5 is a cross-sectional view showing a state from planting of a seed potato to completion of laying a sheet.

FIG. 6 is an overall side view of a walking-type working machine and a multi-working device according to a first different embodiment of the present invention.

FIG. 7 is a plan view showing a state in which a sheet is laid by the multi-operation device according to the first alternative embodiment of the present invention;

FIG. 8 is a plan view showing the state of the step of laying one sheet and the step of laying the next sheet by the multi working device in the first alternative embodiment of the present invention.

FIG. 9 is a plan view showing a state in which a sheet is laid by the multi-task device in the second alternative embodiment of the present invention.

FIG. 10 is a plan view showing a state in which a sheet is laid by a multi-operation device according to a third alternative embodiment of the present invention.

FIG. 11 is a sectional view showing a state from laying of sheets to planting of crops in a fourth alternative embodiment of the present invention.

[Explanation of symbols]

 7, 23 Take-out mechanism 14 Pressing mechanism 16, 19, 26 Soil supply mechanism 18, 18a Vibration mechanism 21 Soil closing mechanism A ridge B1, B2, B3, B4 Between ridges S Sheet T, D crop

Claims (6)

[Claims] 1. A sheet laying mechanism for laying a wide sheet as it progresses on a ridge formed in advance, and a soil between cropping sites where crops are cultivated in the ridge.
Or a take-out mechanism for taking out soil between the cropping locations where the crops are to be planted, and a portion between the cropping locations where the crops are being planted on the ridged sheet, or the cropping schedule where the crops are to be planted A multi-operation device comprising: a soil supply mechanism for placing the soil taken out by the take-out mechanism from above on a portion between the locations. 2. A sheet laying mechanism for laying a sheet as it straddles a plurality of ridges formed in advance, a takeout mechanism for taking out soil between ridges, and the sheet laid on the ridges And a soil supply mechanism for placing the soil taken out by the take-out mechanism from above on a portion between the ridges. 3. The multi-working device according to claim 1, wherein the soil supply mechanism is configured so that the soil taken out by the take-out mechanism is also placed on an end of the sheet laid on the ridge from above. . 4. A sheet laying mechanism for straddling a plurality of ridges formed in advance and laying a sheet with progress, a takeout mechanism for taking out soil between ridges, and the sheet laid on the ridges A soil supply mechanism for placing the soil taken out by the take-out mechanism from above on the portion between the ridges and the end of the sheet, and putting the soil from the field onto the end of the sheet laid on the ridge from above. A multi-working device equipped with a mulling mechanism. 5. A pressing mechanism for pressing an end of the sheet laid on the ridge from above, and soil from the soil supply mechanism is placed from above on a portion of the sheet pressed by the pressing mechanism. The multi working device according to claim 3 or 4, wherein the multi working device is configured as follows. 6. The multi-operation device according to claim 1, further comprising a vibration mechanism that applies vibration to the soil supply mechanism.