JP3005601B2 - Field leveler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a field leveling machine used for leveling work in a field such as a rice field.

[0002]

2. Description of the Related Art Conventionally, this kind of field leveling machine has been disclosed in
No. 9-3607, Japanese Utility Model Publication No. 61-45245,
Japanese Patent Publication No. 56-55327 and the like are known.

In this conventional structure, a mounting frame is connected to a tractor so as to be able to move up and down, a soil carrier is provided on the mounting frame so as to be tiltable rearward, and a plow is held and raised on the mounting frame in a forward-downward manner. It is arranged so as to be rotatable.

Thus, the tractor is moved forward while holding the plow body in a forward-downward shape, and the soil at a high place in the field scene is scraped by the plow body, and the shaved soil is introduced into the soil carrier by the plow body. Then, the tractor is moved to a low place in the field, and the worker artificially releases the locking mechanism at that position, tilts the soil carrier backward by its own weight, and removes the soil in the soil carrier at a low place in the field scene. To perform the land preparation work in the field.

[0005]

However, in the case of the above-mentioned conventional structure, the plow is provided so as to be able to hold and pull up in a forward-downward shape, so that the mounting frame is lowered while moving the tractor forward to remove the plow from the field. When trying to penetrate the soil, the front end of the plow body rotates upward when the field soil is hard soil, etc.
The front end of the plow body is lifted, which causes a problem of poor penetration of the front end of the plow body, resulting in a decrease in efficiency of plowing operation.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to solve these inconveniences. The gist of the present invention is that a mounting frame is provided on a tractor so as to be movable up and down, and a soil carrier is mounted on the mounting frame in a rearward direction. In the one that is provided so as to be tiltable, the plow is disposed so as to be held forward and downward by a holding mechanism and is rotatable up and down, and two left and right reinforcing plates are fixed to the back surface of the plow,
A bridge plate is erected between the front portions of the reinforcing plates, and a field
A plate that immerses in the plane and rotates the front end of the plow downward
And a resistance receiving part comprising:

[0007]

When the mounting frame is lowered, the resistance receiving portion provided on the plow body is immersed in the field scene, and ground resistance is generated in the resistance receiving portion as the vehicle travels, and the front end of the plow body is turned downward by the resistance action. Be moved.

[0008]

1 to 10 show an embodiment of the present invention.
Is a tractor, and a connecting mechanism 2 is provided at the rear of the tractor 1.
Connect the mounting frames 3.

The connecting mechanism 2 includes a lower link 4 projecting from the lower left and right sides of the tractor, a swing arm 5 projecting from the upper left and right sides of the tractor, and the middle of the swing arm 5 and the lower link 4. And a top link 7 projecting above the tractor. The tip of the lower link 4 and the tip of the upper link 7 are connected to the mounting frame 3 by connecting pins 8. The mounting frame 3 is vertically movable by a swing arm 5 that swings by hydraulic pressure.

Reference numeral 9 denotes a holding mechanism, which holds the mounting frame 3 on the side face L.
Right and left vertical rods 3a of the mounting frame 3
A mounting body 10 having a triangular cross section is pivotally connected between the left and right pins 11 between the mounting body 10 and a plow 1
2 is attached to the lower surface of the plow body 12, two reinforcing plates 13 are fixed to the back surface of the plow body 12, a bridge plate 13a is erected at a front portion between the reinforcing plates 13, and a reinforcing plate is provided on the lower surface of the horizontal rod 3b of the mounting frame 3. A stopper 14 is provided at the rear of the stopper 13 so as to be able to hold and pull up the plow 12 in a forward-downward manner.

Reference numeral 15 denotes a soil carrier. The soil carrier 15 has left and right side plates 17 and front plates 1 on four sides of a rectangular bottom plate 16.
8. Plow body 1 of front plate 18 formed by standing rear plate 19
The soil introduction part 20 is formed in the position facing 2.

The front plate 18 and the bottom plate 16 of the earth carrier 15 are also provided.
, Two L-shaped reinforcing rods 21 are fixed to the outside of the base plate, the reinforcing rods 22 are fixed only to the bottom plate 16 at intervals, and the other reinforcing rods 23 are fixed to the left and right sides of the bottom plate 16 to reinforce. The horizontal rod 3b of the mounting frame 3 is located between the rods 21 and 22, the fulcrum shaft 24 is inserted through the horizontal rod 3b and the reinforcing rods 21 and 22, and the soil carrier 15 is mounted so as to be tiltable rearward about the fulcrum shaft 24. ing.

Reference numeral 25 denotes a guide member, which is a soil inlet 20.
Between the left and right vertical rods 3a at the lower part of the
The guide surface 25a is formed so as to conform to the inclination angle of.

Reference numeral 26 denotes a locking mechanism. The locking mechanism 26 pivotally connects a hook-shaped locking arm 27 to the horizontal rod 3c on the upper part of the mounting frame 3, and a locking part 28 on the upper part of the soil carrier 15. Is formed, and the locking arm 27 and the locking portion 28 are engaged with each other, and the engaged state is held by the spring member 29.

Reference numeral 30 denotes a lifting mechanism which pivotally connects an operating lever 32 to the horizontal rod 3c by a pivot shaft 31, pivotally connects a pulling arm 33 to the one pin 11, and connects the pulling arm 33 to a connecting wire. 34 to the operating lever 32,
An engaging projection 10a that can be brought into contact with the end 33a of the pull-up arm 33 is formed on one side of the arm, and a lock plate 35 is fixed to the other side of the mounting body 10. Holder 3
6, a lock pin 37 protruded and urged by a built-in spring is provided in a holder 36, a lock hole 38 is formed in the lock plate 35 through which the lock pin 37 is inserted, and the operation lever 32 is provided.
When the plunger 12 is pushed down as shown by the imaginary line in FIG. 6, the plow 12 is pulled up from the use position a in FIG. 7 to the non-use position b in FIG. The plunger 12 with its own weight is used in the forward descending position a
When the plow 12 alone is pulled up and rotated by hand, the lock pin 37 is inserted into a lock hole 38 provided in the lock plate 35 as shown in FIGS. It can be held at three positions: a use position a in the forward descending state during the plowing operation, an unused position b in the substantially horizontal state, and a non-plowing operation position c in the inverted state at the end of the operation.

Reference numeral 39 denotes a resistance receiving portion, in this case, FIG.
5, the rear portions of the two reinforcing plates 13 which are attached to the back surface of the plow body 12 and which can be immersed in the field scene W are formed to have a shape extending toward the rear side.

In this embodiment, the tractor 1 is moved forward while holding the plow body 12 at the forward-downward use position a, and the soil at a high place in the field scene W is scraped off by the plow body 12, Soil carrier 1 with plow 12 from the shaved soil
5, the tractor 1 is moved to a low place in the field, and the worker manually releases the locking mechanism 26 at that position, tilts the soil carrier 15 backward by its own weight, and moves the soil carrier 15
The inner soil is discharged to a lower part of the field scene W, whereby the field is leveled.

At the time of the plowing operation, the resistance receiving portion 39 provided on the plow body 12 is immersed in the field scene W and receives the resistance accompanying the traveling, and the resistance action causes the front end of the plow body 12 to center on the pin 11. The portion 12a is turned downward, so that the front end portion 12a of the plow body 12 can be satisfactorily pierced, the floating of the plow body 12 can be prevented, and the plowing work efficiency can be improved accordingly. Since the resistance receiving portion 39 can be immersed in the field scene W, the mounting frame 3 can be lowered to a position as low as possible so that the bottom portion of the mounting frame 3 comes into contact with the ground as shown in FIG. The protrusion of the plunger 12 determined in consideration of the turning locus of the plunger 12 including the inclination angle of the plunger 12 so that the tip of the plunger 12 does not collide with a part of the tractor 1 when the plunger 12 rotates. possible to reduce the length L ₁ Application can, Therefore can rapidly introduce soil soil carriage 15, and also to what the distance between the tractor 1 and the mounting frame 3 defined by the length of the lower link 4 can be shortened even horizontal projection length L ₂ is shorter Therefore, flexibility of the tractor 1 with respect to various standards can be increased.

The present invention is not limited to the above-described embodiment. For example, the resistance receiving portion 39 may include one reinforcing plate 1.
3 and may be designed with appropriate changes.

[0020]

According to the present invention, as described above , the left side
Fix the right two reinforcement plates, and install a bridge between the front of the reinforcement plates
Immersed in the field scene behind the reinforcing plate and the front end of the plow
No resistance receiving part made of a plate material for turning the
Therefore , the resistance receiving part is immersed in the field scene and receives the resistance caused by running, and the front end of the plow is rotated downward by this resistance action, so that the penetration of the front end of the plow can be performed well. Since the plow body can be prevented from floating, and the resistance receiving portion can be immersed in the field scene, the mounting frame can be lowered to a position as low as possible so that the bottom portion of the mounting frame comes into contact with the ground. Therefore, the projecting length of the plow can be shortened, the soil can be quickly introduced into the soil carrier, and the plowing operation efficiency can be improved accordingly.

As described above, the intended purpose can be sufficiently achieved.

[Brief description of the drawings]

FIG. 1 is an overall side view of an embodiment of the present invention.

FIG. 2 is a partial perspective view of the embodiment of the present invention shown in FIG.

FIG. 3 is a partial side view of the embodiment of the present invention shown in FIG. 1;

FIG. 4 is a partial sectional view of the embodiment of the present invention shown in FIG.

FIG. 5 is a partial bottom view of the embodiment of the present invention shown in FIG. 1;

FIG. 6 is a partial longitudinal sectional view of the embodiment of the present invention shown in FIG.

FIG. 7 is a partial longitudinal sectional view of the embodiment of the present invention shown in FIG.

FIG. 8 is a partial longitudinal sectional view of the embodiment of the present invention shown in FIG.

FIG. 9 is a partial longitudinal sectional view of the embodiment of the present invention shown in FIG.

FIG. 10 is a partial longitudinal sectional view of the embodiment of the present invention shown in FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Tractor 3 Mounting frame 9 Holding mechanism 12 Plow body 15 Earth carrier 13 Reinforcement plate 13a Passing plate 39 Resistance receiving part

Claims (1)

(57) [Claims] An installation frame is provided on a tractor so as to be vertically movable,
A soil carrier is provided on the mounting frame so as to be tiltable rearward, and the plow is disposed so as to be held forward and downward by a holding mechanism and can be turned up and down .
A reinforcing plate is fixed, and a bridge plate is erected between front portions of the reinforcing plate.
Immerse in the field scene behind the reinforcing plate and lower the front end of the plow
A field leveling machine characterized by comprising a resistance receiving portion made of a plate member to be turned in the direction .