JPH0433687Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a seedling soil leveling device for leveling the seedling soil before rice planting.

[Conventional technology]

BACKGROUND ART Conventionally, before rice planting, a soil leveling device is connected to the rear of a tractor or the like to level the soil for seedlings.

The purpose of this leveling of the land for seedlings is mainly to prevent weeds, wheat straw, etc. from interfering with the rice transplanting process, and to prevent seedlings from missing. For this reason,
Conventional soil leveling equipment is equipped with a leveling plate that forces weeds and wheat straw into the soil and at the same time flattens the soil surface.

[The problem that the idea aims to solve]

This leveling board comes in various shapes, but
Since it merely presses down on the soil surface, weeds, wheat straw, etc. tend to accumulate on the soil surface, making it impossible to completely bury them in the soil. Therefore, although it is possible to make the field flat, there is a drawback that it is difficult to plant seedlings.

Furthermore, in the case of a structure in which the leveling plate of the soil leveling device is fixed, this leveling plate is located at the rear end, so when the tractor is turned over at the edge of the field or when the tractor is driven on the road, the leveling plate is located at the rear end. Easy to get in the way. For this reason, not only does it become a hindrance to soil leveling work, but it is also necessary to remove the soil leveling device from the tractor each time the tractor is driven on a road.

Furthermore, with a structure in which the leveling plate is fixed, the attitude of the field relative to the soil cannot be changed, and there is also the problem that appropriate leveling work cannot be performed in accordance with the soil quality of the field and its hardness and softness.

The problem to be solved with this invention is to not only suppress weeds and wheat straw, but also to ensure that they are buried in the soil and level the land, and to perform optimal land leveling work according to the soil conditions of the field. It is to make it.

[Means to solve the problem]

The nursery ground leveling device of the present invention has a bracket that connects the base end to the tractor, a first frame that is rotatably attached to the tip of the bracket in a vertical plane, and a base end that is pivotally attached to the first frame. a connecting rod whose tip side is rotatable in the vertical direction; a second machine frame pivotally attached to the tip of the connecting rod so as to be rotatable in a vertical plane; a turnbuckle connected between the frame and the second machine frame and having connecting ends pivoted to these machine frames, and a turnbuckle rotatably attached to the first machine frame and threaded in a direction vertically penetrating the connecting rod. a screw rod that rotates the connecting rod up and down around a pivot point with the first machine frame; an arm that is fixed to the lower end of the second machine frame and extends in the width direction; a plurality of disks arranged so as to be able to roll around a supported main shaft; a connecting plate rotatably attached around the arm; and a leveling plate provided at the rear end of the connecting plate and arranged behind the disks. It is characterized by consisting of.

[Effect]

Since the disk and the leveling plate are connected to the first frame provided on the bracket and rotatable in a vertical plane by the connecting rod and the second frame, the first frame is rotatable in a vertical plane.
By rotating the machine frame, the disk and leveling plate are set to a position away from the ground. Therefore, when changing the direction of the tractor in the field or driving the tractor on the road after work, it is not necessary to remove the disks and leveling plates one by one.

In addition, the screw rod installed on the first machine frame penetrates the connecting rod from above and is screwed into it, so if the screw rod is rotated, the connecting rod will rotate up and down around the pivot point with the first machine frame. do. Therefore, as the connecting rod rotates, the second machine frame rotates up and down, and the disk supported by the arm fixed to the second machine frame also moves up and down, changing its level. Therefore, the depth at which the disk penetrates into the soil surface can be changed, making it possible to perform work that corresponds to field conditions such as soil quality.

Furthermore, when the turnbuckle is extended or contracted, the second machine frame rotates around the pivot point with the connecting rod, and the position of the arm fixed to the second machine frame changes accordingly. Therefore, since the position of the connecting point of the connecting plate with the arm changes, the attitude of the ground leveling plate connected to the connecting plate can also be changed.

〔Example〕

The present invention will be explained below based on embodiments shown in the drawings.

FIG. 1 is a side view showing a state in which a nursery ground leveling device A according to the present invention is connected to a tractor T, and FIG. 2 is a perspective view of the same nursery ground leveling device A.

In the figure, 1 is a bracket fixed to the rear of the tractor T, 2 is a first machine frame rotatably attached to the tip of the bracket 1, and 3 is connected to the first machine frame 2 by a four-bar link mechanism. 2nd machine slot, 4
5 is a disk for burying weeds, wheat straw, etc. in the soil, and 5 is a ground leveling plate placed on the rear side of the disk 4. Both ends of the ground leveling plate 5 are bendable.

FIG. 3 is an exploded perspective view of the bracket 1 and the first and second machine frames 2, 3, and the following description will include this figure.

Reference numeral 6 denotes a gate frame which is rotatably attached to the first machine frame 2 by a first pivot 7, and second and third pivots 8 and 9 are connected to the upper and lower sides of the first pivot 7. . Reference numeral 10 denotes two connecting rods, one end of which is rotatably connected to the second pivot 8, and the other end of which is pivotally connected to the upper end of the first machine frame 3, and has a horizontal rod 11 in the middle that connects each rod. There is. This horizontal rod 11 is attached to a connecting rod 10 so as to be able to rotate around its axis, and a screw rod 14 is inserted through a mounting hole 12 of the gate frame 6 and has an operating handle 13 attached to its upper end.
are screwed together by passing through them in the radial direction. As shown in FIG. 3, the member with the mounting hole 12 is a rod-shaped member that is perpendicular to the opening axis of the mounting hole 12.
This member is attached to the gate frame 6 so as to be rotatable about its axis. Therefore, when the screw rod 14 is rotated, the connecting rod 10 is moved to the second pivot 8 with respect to the first machine frame 2 which is in the fixed state in FIG.
It can be rotated around.

A turnbuckle 15 has one end rotatably connected to the third pivot 9 of the gate frame 6 and the other end rotatably connected to the lower end of the second machine frame 3. This turnbuckle 15 is provided with two bolt rods as is generally used, and by moving these bolt rods in different directions, the entire axial length of the turnbuckle 15 is changed.

Numeral 16 is a lock lever for fixing the position of the first machine frame 2 with respect to the bracket 1. By pulling this lock lever 16 left and right using a spring (not shown), the first machine frame 2 can be engaged and released. can be done. The first machine frame 2 has a first engagement hole 1 into which the tip of the lock lever 16 is fitted.
8 and a second engagement hole 19 are provided, and the first engagement hole 1
8 is used when leveling the ground, and the other second engagement hole is used when the ground leveling mechanism is rotated upward and stored.

Reference numeral 20 denotes an arm fixed to the lower end of the second machine frame 3, and auxiliary arms 21 are provided at both ends of the arm, and a main shaft 22 on which a disk 4 is rotatably mounted is fixed to the tip side of these auxiliary arms 21. There is. In addition, 2
Reference numeral 3 denotes a lifting handle connected to the tips of both auxiliary arms 21 and arranged so as to surround each disk 4. Further, in this example, each disk 4 has a wavy shape on its outer periphery, so that weeds and wheat straw can be efficiently caught and buried in the soil.

Reference numeral 24 designates a leveling plate mounting plate fixed to the arm 20, and reference numeral 25 designates a connecting plate rotatably attached around the arm 20. A pair of connecting plates 25 are arranged in the width direction as shown in FIGS. 2 and 3, and two connecting rods 25a are attached to each pair, and the leveling plates 5 are connected by a total of four connecting rods 25a. . Each of these connecting rods 25a has one end pivotally connected to the connecting plate 25 so as to be freely rotatable within a certain angular range in the vertical direction, and the other end pivotally connected to the ground leveling plate 5 so as to be similarly freely rotatable vertically. Further, first and second clamps 26, 27 are attached to the leveling plate mounting plate 24, and when the leveling plate 5 is rolled upward and stored, the first clamp 26, 27 is attached.
When using the clamps 26 to level the ground in the state shown in FIG. 1, they are each fixed with a second clamp 27.

In the seedbed leveling device A of the above configuration, as shown in Figure 1, the disk 4 rotates as the tractor T travels, gradually burying weeds and straw S on the soil surface G into the soil, and the soil surface made uneven by the disk 4 is pressed down by the leveling plate 5 to make a flat surface, thereby leveling the land.

Here, when the screw rod 14 is rotated by the handle 13, the connecting rod 10 rotates about the pivot point with the first machine frame 2. That is, when the screw rod 14 is rotated in one direction and operated so that the screw rod 14 faces upward from the horizontal rod 11, the screw rod 14 is restrained by the gate frame 6 and does not move upward. The rod 11 is pushed down, and the rear end side of the connecting rod 10 moves downward. For this reason, connecting rod 1
The entire second machine frame 3 to which the 0 is pivoted also lowers, and as a result, the level of the disk 4 is also set to the lower side. Note that when setting the ground leveling plate 5 downward, the leveling plate 5 is supported by the connecting plate 25 and the connecting rod 25a rotatably attached to the arm 20, so the leveling plate 25 is always placed on the soil surface G. maintain contact. Therefore, by such level adjustment, disk 4
is embedded deeply into the soil surface G, and the leveling plate 5
The ground can always be leveled in contact with the soil surface G.

Also, if you turn the screw rod 14 in the opposite direction, the connecting rod 10
is drawn toward the gate frame 6 side, the disk 4 moves upward, and the ground leveling plate 5 always maintains a state in contact with the soil surface G because the connecting plate 25 is free to rotate with respect to the arm 20.

In this way, the level of the disc 4 can be changed by the operating handle 13, and the depth of the disc 4 can be adjusted. Therefore, the pushing depth can be adjusted appropriately depending on the soil condition of the field, the amount of weeds and straw, etc., and since the leveling plate 5 also moves while always being in contact with the soil surface G, the level of the disk 4 can be changed. Land leveling is also done well regardless of the conditions.

Also, when the turnbuckle 15 is expanded and contracted, the second
The machine frame 3 rotates around the pivot point with the connecting rod 10. That is, when the length of the turnbuckle 15 is extended, the second machine frame 3 is pushed to the right in FIG. 1 and rotates counterclockwise around the pivot point with the connecting rod 10. Therefore, the position of the pivot point of the connecting plate 25 rotatably attached to the arm 20 also changes, and the lower surface of the ground leveling plate 5 changes its orientation from the inclined one shown in FIG. 1 to the horizontal one. In addition, since the lower end side of the second machine frame 3 rotates to the right in FIG. 1, the arm 20 fixed to the second machine frame 3 also rotates to the right. As a result, the level of disk 4 is set to the lower side.

On the other hand, when the length of the turnbuckle 15 is shortened, the third machine frame 3 rotates clockwise in FIG. 1, and the slope of the lower surface of the ground leveling plate 5 becomes more upright than that shown in the figure. At this time, since the arm 20 rotates clockwise in FIG. 1, the level of the disk 4 is set upward.

In this way, by operating the turnbuckles 15, the angle at which the ground leveling plate 5 contacts the soil surface G can be changed, making it possible to level the ground appropriately depending on conditions such as soil quality.

Note that when the inclination of the ground leveling plate 5 is adjusted by the turnbuckle 15, the attitude of the second machine frame 3 changes and the level of the pivot point of the arm 20 also changes.
For this reason, the level of the disk 4 also changes in the same way as when operating the operating handle 13.
By setting the level of the disk 4 and the slope of the leveling plate 5 to an appropriate combination according to the field conditions, it is possible to level the soil for seedlings without any problems.

Further, when the ground leveling plate 5 is not required, the second clamp 27 is released and rotated upward as shown in FIG. 4, and the first clamp 26 is held in the state shown in the figure. This allows work to be performed using only the disk 4.

Furthermore, when carrying out the tractor T from the field after leveling the land, when the tractor T is pulled up from the state shown in FIG. The ground leveling plate 5 can be set in an upright position. Then, by engaging the lock lever 6 with the second engagement hole 19, the disk 4 and the ground leveling plate 5 can be held at a position away from the soil surface G. Therefore, when moving to another work place or reversing the running direction of the tractor T, the work can be done without removing the nursery ground leveling device A from the tractor T.

As mentioned above, in addition to being able to change the leveling depth by adjusting the level of the disc 4, the leveling depth of the leveling plate 5 can be changed.
Since the angle of the ground leveling can also be adjusted, by appropriately combining these leveling depths and angles, it is possible to perform the optimum leveling work depending on the site. Further, since the disk 4 and the ground leveling plate 5 can be inverted and held at a position away from the soil surface, the seedling generation leveling device A can be moved without being removed from the tractor T.

〔effect〕

In the present invention, wheat straw or the like is buried in the soil surface by making a disc indentation into the soil surface, and then the field can be leveled using a leveling board. For this reason,
Compared to the work of simply pressing the soil surface, it is possible to create seedlings more efficiently without the accumulation of wheat straw, weeds, etc. on the soil surface. Furthermore, since the level of the disk and the posture of the leveling plate can be changed, it is possible to level the ground according to the soil quality of the field. Furthermore, since the disc and leveling plate can be rotated upward and held in a position away from the soil surface, the leveling device can be moved without having to be removed from the tractor each time, allowing for efficient work that takes advantage of its mobility. Become.

[Brief description of the drawings]

Fig. 1 is a side view showing the Naesiro ground leveling device according to the present invention connected to a tractor, Fig. 2 is a perspective view of the device, Fig. 3 is an exploded perspective view of the first and second machine frames,
FIG. 4 is a side view showing the ground leveling plate inverted and stored, and FIG. 5 is a side view showing both the ground leveling plate and the disk inverted and stored. 1... Bracket, 2... First machine frame, 3... Second machine frame, 4... Disc, 5... Leveling plate, 10...
...Connecting rod, 14...Screw rod, 15...Turnbuckle, 20...Arm, 22...Main shaft, 25...Connecting plate, T...Tractor.

Claims (1)

[Claims for Utility Model Registration] A bracket that connects a base end to a tractor, a first machine frame that is rotatably attached to the tip of the bracket in a vertical plane, and a base end that is pivotally attached to the first machine frame. a connecting rod whose tip side is rotatable in the vertical direction; a second machine frame pivotally attached to the tip of the connecting rod so as to be rotatable in a vertical plane; and a second machine frame located below the connecting rod. frame and second
a turnbuckle which is connected between the machine frames and whose connecting ends are pivotally connected to the machine frames; and a turnbuckle which is rotatably attached to the first machine frame and is screwed in a direction vertically penetrating the connecting rod and which is connected to the machine frame; a screw rod that rotates the connecting rod up and down around a pivot point with the first machine frame; an arm that is fixed to the lower end of the second machine frame and extends in the width direction; and a main shaft that is supported at both ends by the arm. comprising a plurality of disks arranged so as to be freely rollable; a connecting plate rotatably attached around the arm; and a leveling plate provided at the rear end of the connecting plate and arranged behind the disks. A Naesiro land leveling device featuring: