JPH041795Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention covers the field where crops such as lettuce, Chinese cabbage, and cabbage are sown and grown with a sheet material, and at the same time, the covered sheet material is submerged into the soil using a string. This invention relates to a seat fixing device that is pushed into and fixed to the seat.

(Conventional technology and problems) Fields are covered with vinyl sheets, etc. for the purpose of improving the heat retention of the field to improve seed germination and seedling establishment, as well as to eliminate weeds and reduce the effort of weeding. It is often done. However, in the past, after the sheet was covered, soil was poured over the top of the edge of the sheet using a scoop or the like to secure the sheet in place, which not only required extra manpower to cover the soil, but also reduced efficiency. Moreover, the sheet often came off due to insufficient soil volume, and it took time and effort to remove the covered soil when collecting the sheet.

(Means for Solving the Problems) Therefore, the present invention provides a sheet feeding mechanism that covers the field while wrapping the side end of a sheet member such as a vinyl sheet, and a guide pulley that can freely rotate the lap portion of the sheet member. a string feeding mechanism that presses the lap part of the sheet member into the soil from above with a string pulled out from a string bundle holder provided above the sheet feeding mechanism by being pressed by a guide pulley; By being equipped with a compression mechanism that compresses the lap portion of the sheet member pressed down by the string of the string feeding mechanism from above, the sheet member can be fixed with the string at the same time as covering the field area with the sheet member. , it eliminates the need for soil covering work for fixing sheet members as in the past, and eliminates the inconvenience of sheets coming off due to insufficient soil volume, and
When collecting the sheet, simply pull the string upwards, and as the string moves upward, the soil that was previously clamped and fixed will be separated and removed to the left and right, releasing the fixation of the lap section, making it easy to remove the sheet. The present invention aims to provide a sheet fixing device that can be recovered.

(Embodiment) To explain the configuration of the present invention with reference to an embodiment shown in the drawings, 1 is a rotary tilling device mounted on the rear of an agricultural tractor A so as to be movable up and down via a three-point link mechanism 2; A pair of left and right cylindrical support arms 4, 4' project from the transmission frame 3, and a ridge forming tool B is connected and supported by the support arms 4, 4' via a connector 5. This ridge shaping tool B
These are forming plates 6, 6' having a V-shaped front surface for guiding the fine soil tilled by the rotary tiller 1 to the ridge shaping position and shaping the left and right side walls of the ridge, and rollers 7 for leveling the upper surface of the ridge. , 7...

C is a sheet fixing device connected to the rear of the ridge forming tool B, and this sheet fixing device C includes a sheet feeding mechanism 10 that covers the field while wrapping the side edge of a sheet member such as a vinyl sheet, and the above-mentioned sheet fixing device C. A string feeding mechanism 20 that presses down the wrap portion of the sheet member from above with a string, and a pressing mechanism 30 that presses the wrap portion of the sheet member held down with the string from above.
It is equipped with the following. The sheet feeding mechanism 10 includes roll-shaped vinyl sheets 11, 11, .
2, 12a, and a sheet tension rod 13 horizontally attached above the guide rollers 12, 12a. In addition, the above vinyl sheets 11, 11,
A plurality of ... are arranged vertically alternately in the width direction of the machine, and the ends of each sheet are inserted into each other, and the first and third sheets are attached to the sheet tension rod 13 as shown in Fig. 5. and guide rollers 12, 12a
It passes between the guide pulley and the groove plate, which will be described later, and is pulled out to the rear and lower part of the pressure ring.
The fourth sheet is located between the sheet tension rod 13 and the rear guide roller 12 and between the front and
The sheet passes between the guide rollers 12 and 12a at the rear, and then between the guide pulley and the groove plate, and is pulled out rearward with the side edges of the sheet wrapped around the adjacent sheet.

Next, the string feeding mechanism 20 is a structure that is integrally fixed to the string bundle holder 21 disposed above the sheet feeding mechanism 10 and above the front of the frame a, and the lower rear end of the shaping plates 6, 6'. The guide pulley 23 is rotatably supported directly behind the groove plate 22, and the tip of the string 24 stored in the string bundle holder 21 is connected to a guide pulley 23 mounted on the frame a. ring 2
5 and the intermediate pulley 26 via the guide pulley 23, the vinyl sheets 11, 11 drawn out by the sheet feeding mechanism 10 are fed out with the upper surfaces of the lap portions facing rearward, and the vinyl sheets 1
The lap parts 1 and 11 are pressed down from above.

Further, the press mechanism 30 includes a holder 31 connected to the rear part of the frame a, a press ring 32 and a press ring 32 that are vertically adjustable with respect to the holder 31 and supported immediately behind the guide pulley 23. The ground pressure of the pressure ring 32 can be changed by operating the handle 34 of the pressure spring 33. Numeral 35 is a connecting bolt for the holder 31, and by adjusting the bolt 35, the connecting angle of the holder 31 can be freely changed.

(Function) In the above-described configuration, when starting the sheet fixing work, the vinyl sheets 11, 11, ... and the free end side of the string 24 that have been fed out backward are fixed to one end of the field by an appropriate method. , move the aircraft forward and begin work. As the machine moves forward, the fine soil tilled by the rotary tilling device 1 is guided to the shaping plates 6, 6' and shaped into ridges, while at the same time being moved by the rollers 7,
7. The upper surface of the ridge is automatically leveled to an appropriate hardness. The vinyl sheets 11, 11, ... pulled out rearward as the aircraft moves forward simultaneously cover the upper surface of the ridge in multiple strips (four strips in the embodiment), and also fill the grooves b made by the groove plate 22. 11,
While pushing the lap part of sheet 11 with the guide pulley 23, the lap part of sheets 11, 11 is pushed in with the string 2 from above.
4, and then the subsequent pressing wheel 32 presses the upper part of groove b together with the sheets 11, 11, so the soil on both the left and right molded parts of groove b is broken down, and groove b is backfilled. . Therefore, the wrap part and the string 24
The sheets 11, 11 and the string 24, which are securely clamped and fixed in the soil together by the earth pressure of the collapsed earth, are pressed and buried in the groove b. In this way, the sheets 11, 11... are covered and fixed at the same time as the ridge shaping. In addition, after one stroke is completed, the sheets 11, 11, . . . and the string 24 are cut off and fixed in the soil.

By the way, in the above embodiment, vinyl sheet 1
Two guide rollers 12, 12a for passing sheets 1, 11, . Sheets 11, 11...
It has become possible to easily overlap sheets, and to cover multiple sheets (three or more) in one process.

On the other hand, when collecting the sheet, by pulling the string 24 upward, the soil that had been clamping and fixing the lap part is separated and removed to the left and right at the same time as the string 24 moves upward, and the groove b is restored. 11 can be easily collected.

(Effects) As described above, the present invention has a sheet feeding mechanism that covers the field while wrapping the side edges of a sheet member such as a vinyl sheet, and a rotatable guide pulley that covers the lap portion of the sheet member with soil from above. a string feeding mechanism that presses the lap portion of the sheet member into the soil with a string pulled out from a string bundle holder provided above the sheet feeding mechanism by being pressed by a guide pulley, and the string feeding mechanism; Since it is equipped with a pressure mechanism that presses the lap part of the sheet member held down by the string of the mechanism from above, it is possible to cover the field with the sheet member and fix the sheet member with the string at the same time. , it is possible to completely eliminate the need for soil covering work for fixing sheet members as in the past, greatly improving work efficiency, and eliminating the inconvenience of sheets coming off due to insufficient soil volume, and the cord can be pulled upwards. The soil above the string can be separated and removed to the left and right, and the lap part is released from fixation, making it easy to collect the sheet.Furthermore, since the lap part is press-fitted into the soil, the inside of the sheet can be removed after being covered. Heat retention can be improved by preventing heat from escaping. Furthermore, since there are no obstructions such as soil covering between the furrows, drainage performance can be greatly improved, and since the sheet members are stacked one on top of the other, it is possible to cover multiple strips at the same time.

[Brief explanation of the drawing]

FIG. 1 is an overall perspective view showing the present invention attached to a ridge forming tool connected to a rotary tillage device;
Figure 2 is a perspective view of the ridge shaping tool, Figure 3 is a side view of the main parts, Figure 4 is an explanatory diagram of the operation, Figure 5 is how to pass the sheet for the 1st and 3rd rows, and the diagrams are for the 2nd and 4th rows. 6 is a side view showing how to pass the sheet through the strips, 6 is a perspective view showing the state in which the side edges of the sheet are wrapped.
The figure is a sectional view showing a state in which the sheet is fixed with a string. In the figure, 10 is a sheet feeding mechanism, 11, 11...
... is a vinyl sheet, 20 is a string feeding mechanism, 30
is a pressure mechanism.

Claims (1)

[Scope of utility model registration request] a sheet feeding mechanism that covers a field area while wrapping the side edge of a sheet member such as a vinyl sheet;
At the same time, the lap part of the sheet member is pressed into the soil from above by a rotatable guide pulley, and at the same time, the sheet member is pulled out by a string pulled out from a string bundle holder provided above the sheet feeding mechanism by being pressed by the guide pulley. This sheet fixing device is equipped with a string feeding mechanism that presses the wrap portion into the soil, and a pressing mechanism that suppresses the wrap portion of the sheet member held down by the string of the string feeding mechanism from above.