JPH0547529Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a ridge leveling machine, and in particular, in a ridge leveling machine that digs up muddy soil, mounds it up, and compacts the raised soil with a ridge pounding board, the present invention is applied to It relates to things that are made to prevent soil from adhering to them.

BACKGROUND TECHNOLOGY Ridges are built in rice fields to store water by weiring them, to create borders with other people's fields, or to serve as footpaths for agricultural work. Such ridges are considered to be good if they do not leak water, do not collapse even when people walk on them, and are stable without changing in height or width.

In order to create such ridges, conventionally, a tiller is used to make soil at the edge of the ridge, then the weathered soil and grass on the surface of the ridge is removed with a hoe, and then the soil is poured into the remaining area. Another method is to place it on top and hit it with a hoe. This method is the best method because the clay has an oriented structure, so it hardens and hardens when it dries, but if you pile it too thickly at once, it will cause large cracks when it dries, causing water leakage. It took time and effort to make adjustments while proceeding with the work, and there were problems with labor saving in agricultural work.

Therefore, a ridge leveling machine was developed that mechanized the above-mentioned method of mounding the mixed soil with a hoe, but since this machine kneads soil and mud, it can only be used when there is a lot of water in the fields. For example, since it only lasts for a short period of time in early spring, it has the disadvantage of being limited in its usage period.In an attempt to improve this, a ridge straightening machine was developed that replenishes water with a pump, but it was labor-intensive and required manual operation. It was also a nuisance.

Next, a ridge adjustment machine was developed that improved these shortcomings and could be used throughout spring and autumn. This involves digging up soil with a rotor, mounding it up into ridges, and pounding the mounded soil with a roughly curved ridge pounding board to harden the top and one side of the ridge. The ridge beating plate of this ridge leveling machine is connected to a rod provided on the power output shaft of the tractor via a crank mechanism, and is also rotatably connected to two parallel links that are pivotally supported on the machine frame. It is operated by a so-called lever-crank mechanism, and operates according to a constant movement in which the forward and backward movement of the rod is restrained by the deformation movement of a parallelogram by two links, but the material is steel plate. Because the mound is pounded, sticky wet soil tends to stick to the surface where the mound is pounded.
Even if you pound the embankment with this adhered, you will not be able to obtain uniform and effective pounding pressure, and the shape of the ridge will be uneven.
Improvement was desired.

For example, Japanese Utility Model Application Publication No. 57-98706 discloses a structure in which a flexible buffer desilting board made of cloth, vinyl, rubber, etc. is attached to the inner surface of a ridge beating board.
These have a smooth surface, and when we actually tried them, we found that they did not have a good soil release effect on wet soil with a lot of moisture, and were problematic for use in wet fields.

As mentioned above, the present invention is based on the fact that because conventional ridge-beating boards are made of steel plates, wet soil with a high moisture content tends to adhere to them, so it is also effective to use cloth, vinyl, or rubber affixed to them. The present invention has been made in view of the fact that this is not a solution, and provides a ridge shaping machine in which a covering layer of animal fur is formed on the inner surface of a ridge beating board with the furry side facing up. .

Next, one embodiment of the present invention will be described based on FIGS. 1 and 2.

In Fig . 1, T is a tractor and A is a ridge straightening machine. Frame 1 is attached to a mounting frame a provided at the rear upper part of the tractor T via links b and c, and is rotatably attached to rotatable links d and e provided at both sides of the rear lower part of the tractor. The front upper part of the main engine frame 1 and the rear upper center of the tractor are connected by an adjustment link f whose length can be freely adjusted. It can be rotated downward via the mounting frame a, which is rotated by a hydraulic device (not shown), and can be returned to its original position by rotating the mounting frame a upward by this hydraulic device. ing.

In the above-mentioned ridge adjustment machine A , a speed reducer is connected to a power transmission shaft connected to a power take-off shaft g of a tractor T via a universal joint (not shown), a transmission shaft is connected to this speed reducer, and this transmission shaft A rotor R is attached to the rotor R, and the rotational force of the power transmission shaft is decelerated and direction-changed by the reduction gear to the transmission shaft, and further, the rotation direction thereof rotates in a direction opposite to the rotation direction corresponding to the traveling direction of the tractor. As a result, the axis of the rotor R is oriented substantially perpendicular to the direction of travel of the tractor and rotates in a direction opposite to the direction of rotation with respect to the direction of travel of the tractor.

Note that 1' is a cover plate that covers the top and both sides of the rotor.

Although not shown, the ridge adjustment machine A is connected to a plunger pump that operates hydraulically via a cam or crank to the reducer, and a flexible tube 2 made of rubber or the like is connected to the plunger pump. A piston device 3 (advancing and retracting mechanism section) is connected via the piston device 3.

The piston rod 3a of the piston device 3 is provided with a ridge striking plate 4 having a substantially square shape that can simultaneously strike the upper and side surfaces of the ridge. As shown in FIG. 1, this ridge beating plate 4 is in contact with the top and side surfaces of the ridge and is rotatable by the piston rod 3a provided in the direction toward the core of the ridge, that is, the intersection of the normal lines of the top and side surfaces. is attached to.

That is, this ridge beating board 4 has side plates 4b and 4c provided on both sides of the ridge beating surface 4a, and an intermediate plate 4d located between these side plates. The upper center of the piston rod 4d is supported by a shaft 4e on the piston rod 3a. The height of the side plate 4c is higher than that of the side plate 4b to prevent the soil from collapsing toward the pounding plate when the rotor R strikes the heaped soil. Then, fur is coated on the entire surface of the beating surface 4a of the ridge beating board 4, the entire surface of the side plate 4c, and the lower end of the side plate 4b so that the furry side surface thereof is exposed, and the ends of the fur are covered with fur. The portions are fixed to the side plates 4b, 4c with screws via padding pieces to form a covering layer 4f.

Here, the fur includes, for example, the fur of a wild cow, but the fur of other animals can also be used.

The piston device 3, as shown in FIG.
The cylinder 3b is rotatably supported by a support frame 5, and springs 6a and 6b (not shown) have one end attached to both sides of the support frame 5, and an arm piece protrudes from the upper end of the cylinder. 3
A ridge beating plate return mechanism 6 consisting of a contact piece 6c connected to c and 3'c via connecting rods 3d and 3'd limits its rotation range and allows it to return to its original position. ing.

Further, although not shown in the drawings, the piston device 3 is provided with a sleeve 3f that covers the cylinder so as to be movable back and forth together with a piston rod inserted into the cylinder, and a spring is provided between the sleeve and the cylinder. As a result, the spring is compressed by the sleeve 3f pushed down together with the piston rod by the action of the oil pressure, but when the oil pressure is released, its elastic force acts to push the sleeve 3f upward.

The piston device 3 is supported by a support frame 5 as shown in FIG . It is movably fitted to fixed shafts 9 and 10 provided. The slider 7 can be moved up and down by a screw rod 10 operated by a handle 9a, and the shafts 9, 1 can be moved up and down by bolts 11, 11' provided on the side thereof.
It can be fixed to the small diameter part of 0.

Reference numeral 12 denotes a tail wheel for guiding the movement of the ridge straightening machine.

Next, the operation of this embodiment will be explained.

First, as shown in FIG. 1, the ridge leveling machine A is connected to a tractor T, enters a rice field, drives the power output shaft g, and operates the rotor R and the ridge beating plate 4 . Then, the height of the entire ridge leveling machine is adjusted so that the rotating blades of the rotor R can penetrate the side surfaces of the ridge and the surface soil of the field. Next, the height of the ridge beating plate 4 is adjusted to the height of the ridge, and the direction of the tail wheel 12 is adjusted to be at an obtuse angle forward with respect to the ridge. In this state, when the tractor T is moved parallel to the ridge, the rotating blades of the rotor R scrape the sides of the ridge, dig up the surface soil of the rice field, and heap the scraped and dug up soil into the ridge. The soil thus piled up is pounded and compacted by a ridge pounding board 4 .

At this time, the ridge pounding plate 4 can be rotated freely even if the amount of soil piled up in the ridge differs between the top and side surfaces of the ridge, or if there is an obstacle in the ridge and uneven external force is applied, the ridge pounding plate 4 is able to rotate freely, so it is not forced on the piston rod. No significant bending load is applied, and the piston can move smoothly without abnormally increasing the friction between the piston head and the cylinder. Moreover, after the ridge beating plate 4 has been rotated, if the external force is removed, it will automatically return to its original state by a mechanism (not shown), so it can be rotated at any time while always facing the center of the ridge and striking the ridge. The ridge beating can be performed according to the specific shape of the ridge to be beaten.

At this time, since the ridge beating board is provided with a covering layer 4F of animal fur with the furry side facing up, it is difficult for soil to adhere, especially when the soil is wet and sticky. This has a great effect in preventing the soil from adhering when the mound is pounded and compacted.

Regarding the effect of animal fur on wet soil with high moisture content, its surface is hairy, and the nature of the hair not only makes it difficult for soil to adhere to it, but also makes it difficult for soil to adhere to it due to the voids between the fur. They are small and the hairs are easy to shake, making it easy to shake off the soil that has adhered to them.The hairs also have good air-holding properties, so air is interposed between them and the soil, suppressing soil adhesion, and further when pounding the soil. It is thought that soil release properties are good due to steric effects such as the air being compressed first and then expanding when trying to separate from the soil, making it easier for the soil to separate.

In addition, in the above, the shape of the ridge beating board 4 was formed in the shape of the letter ``to hit the upper surface and one side of the ridge, and the fur coating layer 4f was formed on the entire surface of the beating surface 4a and the side plate 4c. A fur covering layer may be formed on the surface of the ridge.Furthermore, the ridge beating board may be shaped to strike one side of the ridge, and may have a fur covering layer on at least the beating surface that contacts the mound. Of course.

In addition, in the above method, the ridge leveling machine was pulled by a tractor and the power was used to operate the ridge pounding board, but it is also possible to install a prime mover on the ridge leveling machine to make it self-propelled, and use that power to pound the ridge. Of course, the board may also be moved.

As explained above, according to the present invention, a covering layer of animal fur is provided on the ridge beating board with the furry side facing up, so that due to the three-dimensional effect of the hair on the surface, It is difficult for soil to adhere to this covering layer when pounding mounds during ridge leveling, and it has the great effect of being able to level the ridges without causing the soil to stick, especially when pounding sticky mounds that tend to stick with wet soil with a lot of moisture. It will be done. In this way, it is possible to make good ridges regardless of the type of soil, so it is possible to make good ridges not only in dry fields but also in wet fields, which are common in early spring. This is of great practical value, since the main rice-growing areas in Japan are snowy areas, and ridge preparation work must be done in wet fields in early spring.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a ridge setting machine according to an embodiment of the present invention in use, and FIG. 2 is an enlarged perspective view of a part of the ridge beating board. In the figure, A is the ridge straightening machine, R is the rotor, 1 is the main engine frame,
3 is a piston device as an advancing/retracting mechanism part, 4 is a ridge beating plate, and 4f is a coating layer.

Claims (1)

[Scope of utility model registration request] In a ridge shaping machine, the ridge shaping machine has an earth-raising rotor that digs up mud into a machine frame and heaps it up into old ridges, and a ridge-pounding plate that hammers and hardens the mud piled up by the earth-raising rotor, in which the ridge-pounding plate is moved back and forth in a reciprocating manner on the machine frame. The ridge beating plate is provided with an advancing/retracting mechanism part, the ridge beating plate is provided with a hitting surface that hits the top surface and one side of the ridge, and the ridge hitting surface has a covering layer of animal fur with the furry side facing up. A ridge adjustment machine.