JPH0536324Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a puddling leveling device that is connected to the rear of a tractor and has an improved support structure for an apron for puddling rice fields, etc.

(Prior art) Conventionally, as shown in Japanese Patent Publication No. 18643/1983, a plowing leveling device for paddy field paddy field rolling is performed by a tractor swinging from side to side (rolling). Following this, a system has been developed in which the apron (leveling plate) can always be in contact with the rice field in a nearly horizontal state even when rolling.

This is done by making the left and right side covers of the rotor cover protrude rearward, forming a long hole-shaped slit here, passing both ends of the support rod attached to the upper end of the apron through this slit, and allowing free movement within the range of the slit. It moves up and down, and uses the weight of the apron to plow horizontally.

However, in recent years, tractors have been developed in which the hitch part is supported horizontally with respect to the work machine using sensors, and when using such tractors, the apron must be supported within the slit so that it can move up and down. With the conventional structure, the apron touches the ground along the slope of the rice field and slopes, making it impossible to plow horizontally.

Also, when moving the mounds of soil around the ridges to the center, the apron is tilted and fixed, but this is done by connecting a wire to one end of the support rod.
This is connected to the control lever, which is operated from the driver's seat side of the tractor, and the control lever is locked into any locking hole on the control panel, thereby regulating the left and right tilting angle of the apron. .

However, although this type of earth-filling work is performed relatively infrequently, the structure of the control levers and control panels for this purpose becomes complicated, which increases costs.In addition, since the support rods are supported by wires, the bending of the wires This resulted in drawbacks such as the inability to fix the left and right tilting angle of the apron at a constant level.

(Problems to be solved by the invention) The present invention eliminates these conventional drawbacks, has an extremely simple and inexpensive structure, and is capable of plowing the rice field horizontally, as well as performing earth-harvesting work, and is compatible with a variety of tractors. The purpose of the present invention is to provide a scraping leveling device that can perform the following steps.

(Means for solving the problem) In this invention, planar U-shaped guide grooves are installed on the left and right rear sides of the rotor cover that covers the rotor in the vertical direction so that the openings face each other. A plurality of pin insertion holes are drilled at intervals in the direction, and both ends of the support rod attached to the upper end of the apron are inserted into the guide grooves, and the pins passed through the pin insertion holes are used to move the apron. The feature is that the range is regulated.

(Function) In the scraping leveling device of the present invention, both ends of the support rod attached to the upper part of the apron are inserted into the U-shaped planar guide groove, and the vertical movement of the apron is controlled by the pin passed through the guide groove. It can be regulated as desired to perform any work such as leveling the rice field by free vertical movement or horizontal fixation, or grooving by fixing the slope.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

1 to 4 show an embodiment of the present invention. In the figures, 1 is a pipe frame, and a gear box 2 is provided in the middle of the pipe frame 1, and a transmission mechanism (not shown) is used to connect the gear box 2 from the tractor side. The rotational force of the rotor is transmitted to the rotor.

3 is a rotor cover that covers the top of the rotor, and there is an apron (leveling plate) behind this rotor cover 3.
4 is rotatably attached.

A support rod 5 formed of a pipe is fixed to the upper side of the apron 4, and collars 6 are attached to both left and right ends of the apron 4, as shown in FIG.

In addition, a guide groove 8 is formed in the left and right side covers 7 that make up the side surface of the rotor cover 3 so as to protrude toward the rear side of the rotor cover 3. The grooves 8, 8 are attached so that their openings face each other.

2 and 3 on the side surface of this guide groove 8.
As shown in the figure, a plurality of pin insertion holes 9 are opened at intervals along the vertical direction, and stepped pins 10 pass through the holes.

In addition, the support rod 5 fixed to the top of the apron 4 is
The center portion thereof is supported by the rotor cover 3 so as to be tiltable left and right.

As shown in FIG. 4, this support mechanism consists of support rods 5
A bracket 11 is attached to the center of the bracket 11, a rotating shaft 12 is protruded from the center of the front side of the bracket 11, and two insertion holes 13 are formed on both sides of the rotating shaft 12. On the other hand, three insertion holes 14A, 14B, and 14B are opened in the center of the rotor cover 3, and a bearing bracket 15 is fixed inside these holes.

This bearing bracket 15 has a bearing 16 formed in the center, and two support shafts 17, 17 protruding from both sides of the bearing 16.

The rotating shaft 12 protruding from the bracket 11 is inserted into the bearing 16, and the two support shafts 17, 17 on the side of the bearing bracket 15 are inserted into the insertion holes 14B, 14B of the rotor cover 3 and the insertion holes of the bracket 11. 1
3 and 13 and is fixed with a spring washer 18 and a nut 19. The insertion holes 13, 13 are connected to the support shaft 1.
7, the apron 4 tilts left and right within a predetermined range around the rotation axis 12.
Further, since the rotating shaft 12 is inserted into a bearing 16 whose outer diameter is slightly larger than this, the apron 4 can be rotated back and forth.

Reference numeral 20 denotes a presser rod attached to the apron 4, which functions to constantly press the apron 4 downward by means of a coil spring 21.

A finishing plate 22 is rotatably connected to the rear of the apron 4, and is pressed downward by a finishing plate holding rod 23.

In the figure, reference numeral 24 indicates a fixing pin for fixing the stepped pin 10.

Therefore, when plowing the rice field with the above-mentioned plowing leveling device, it is connected to the tractor with a three-point hitch, the stepped pin 10 is passed through the pin insertion hole 9 at the bottom of the guide groove 8, and the fixing pin 24 is inserted. Fix it with.

When paddy field plowing work is performed in this state, even if the tractor swings left and right and the plow leveling device tilts left and right, both ends of the support rod 5 can move vertically within the guide grooves 8, 8. Since it is supported, the apron 4 is in contact with the rice field in a horizontal state about the rotating shaft 12, and can plow evenly.

In addition, when raking with a tractor equipped with a sensor that horizontally controls the posture of the hitch part, for example, as shown in FIGS. 2 and 3, a stepped pin 10 is passed through the second stage pin insertion hole 9. By supporting the collars 6 at both ends of the support rod 5 from below, the apron 4 is fixed horizontally.

In addition, when soil on the ridges is to be brought to the center, if the stepped pins 10, 10 of the left and right guide grooves 8, 8 are installed at different levels, the apron 4 is supported at an angle, and the soil gathering work can be carried out.

FIG. 5 shows another embodiment of the present invention, in which the rear end of the side cover 7 is made to protrude from the rotor cover 3, and is bent inward into an L-shape so that it is connected to the rotor cover 3. There is a planar U-shaped guide groove 8 in between.
was formed. In this case, a nut 19 is welded to the pin insertion hole 9 inside the rotor cover 3, and a pin 25 with a threaded end is passed through from the apron 4 side and fixed with the nut 19 to support the collar 6 of the support rod 5. It is.

In addition, the apron 4 has a simple structure in which the rotating shaft 12 is not attached to the center of the support rod 5, as shown in FIG.
The apron 4 is made to pass through the support rod 5 to restrict the vertical movement distance of both ends of the support rod 5 within a certain range, and the apron 4 can freely move up and down and tilt within this range.

In addition, when the apron 4 is tilted and the work is carried out upwardly, as shown in FIG. Good (Effect of the invention) As explained above, the scraping leveling device according to the present invention is composed of a guide groove having a U-shape in plan and a pin penetrating the guide groove at an arbitrary height. Due to its simple structure, the apron can be moved up and down and tilted horizontally as desired, so it can be used with all types of tractors, such as horizontal plowing of rice fields and mulching.

[Brief explanation of the drawing]

Figures 1 to 4 show an embodiment of the present invention, in which Figure 1 is a perspective view of a scraping leveling device, Figure 2 is a perspective view showing the main part of the guide groove, and Figure 3 is a perspective view of the puddling leveling device. FIG. 2 is a sectional view, FIG. 4 is an exploded perspective view of the apron center support mechanism, FIG. 5 is a horizontal sectional view of a guide groove according to another embodiment, and FIGS. FIG. 2 is a sectional view showing a support structure of a simple apron that is not supported. 3...Rotor cover, 4...Apron, 5...
...Support rod, 8...Guide groove, 9...Pin insertion hole,
10...Stepped pin, 12...Rotary shaft, 16...
Bearing, 22... Finishing plate, 25... Threaded pin.

Claims (1)

[Scope of utility model registration request] A planar U-shaped guide groove is installed vertically on the left and right rear sides of the rotor cover that covers the rotor, with the openings facing each other, and multiple pin insertion holes are inserted into this guide groove at intervals in the vertical direction. A hole is opened, and both ends of a support rod attached to the upper end of the apron are inserted into the guide groove, and the movable range of the apron is regulated by a pin passed through the pin insertion hole. Scraping leveling device.