JPH0547527Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ridge leveling machine, in particular, a ridge leveling machine that digs up muddy soil, mounds it up in old ridges, and pounds the raised soil with a ridge pounding plate, which can freely adjust the vertical position of the ridge pounding plate. Concerning what has been done.

Ridges are built in rice fields to dam and store water, to create boundaries 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 beat it with a hoe. This method is the best method because the mixed soil has an oriented structure, so it hardens and hardens when it dries, but if you pile it too thick at once, it will cause large cracks when it dries, causing water leakage, so you can only pile it up by about 3 cm. , it was time-consuming to make adjustments while proceeding with the work, which posed a problem in saving labor 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 leveling machine that replenishes water with a pump was developed, but it was labor-intensive and required less machinery. The operation was also cumbersome.

Next, a ridge adjustment machine was developed that improved these shortcomings and could be used throughout spring and autumn. This method involves digging up soil with a rotor and mounding it up into ridges, and pounding the raised 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 is operated 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.

In this ridge leveling machine, the lengths of the rods and links are constant and cannot be changed, so the amplitude of the advance and retreat of the ridge pounding board is also constant, and the pounding pressure of the ridge pounding board is determined by the specific shape of the ridge and the soil to be heaped. It is done at a fixed size regardless of the hardness or softness of the rice and the water content, and because it cannot be adjusted, when an abnormally large pressure is applied to the ridge, the problem arises that the ridge is buried in the rice field. This is particularly likely to happen because a large amount of pounding pressure is applied to harden dry field soil into an oriented structure and form ridges.

Also, for example, when the height of the ridge is 300 mm at the entrance or exit of a rice field, and the height of the ridge between the fields is 250 mm, if the ridge beating board is placed in the same position, the former In the latter case, the ridges are struck with high striking pressure, and in the latter case, the ridges are struck with low striking pressure, so there is a difference in the hardness and softness of the created ridges.

In order to avoid these problems, it is necessary to adjust the height of the ridge leveling machine itself, but this is difficult because the degree of penetration of the rotor into the soil cannot be changed arbitrarily.

Therefore, it has been desired to develop a ridge shaping machine that can adjust the vertical position of the ridge beating plate and adjust the beating pressure as appropriate in accordance with the specific circumstances of the ridge to be leveled.

As described above, the present invention solves the problem that in conventional ridge leveling machines, it is not easy to adjust the vertical position of the ridge beating plate, and for example, it is not possible to adjust the beating pressure when the height of the ridges is different. In order to improve this, the present invention provides a ridge straightening machine in which the piston device and the ridge beating plate can be vertically adjusted using a slider provided movably along a fixed axis in the vertical direction.

Next, an 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 leveling machine.
The main engine frame 1 is attached to a mounting frame a provided on the rear upper part of the tractor T via links b and c, and is rotatable to rotatable links d and e provided on both sides of the rear lower part of the tractor. connected to
Furthermore, 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, and the ridge straightening machine A, which is held at a predetermined angle by the adjustment link f, is not shown. It can be rotated downward via the mounting frame a which is rotated by a hydraulic device, and can be returned to its original position by rotating the mounting frame a upward by this hydraulic device.

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, whereby the rotational force of the power transmission shaft is reduced and directed by the reduction gear to the transmission shaft, and further, the rotation direction is opposite to the rotation direction corresponding to the traveling direction of the tractor. The rotor R is transmitted so as to rotate, so that the axis of the rotor R is oriented substantially perpendicular to the direction of travel of the tractor, and the direction of rotation thereof is 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.

Further, although not shown in the ridge adjustment machine A, a plunger pump is connected to the speed reducer via a cam or a crank, and a flexible tube 2 made of rubber or the like is connected to the plunger pump. A piston device 3 is connected to this.

This piston device 3, as shown in FIG.
The inlet body 3a of the cylinder is rotatably supported on the support frame 4 by shafts 3c, 3'c (not shown) passing through the collar 3b, and one end is attached to both sides of the support frame 4. springs 6a, 6b (not shown), and arm pieces 3d, 3'd attached to the other ends of these springs via length adjusting rods 6c, 6d (not shown) and protruding from the collar 3b. The ridge beating plate return mechanism 6, which is composed of a contact piece 6e connected via connecting rods 3e and 3'e, limits its rotational range so that it can return to its original position.

The piston device 3 is provided with a sleeve 3f which is movable back and forth together with a piston rod inserted into the cylinder, and a spring is provided between the sleeve and the cylinder, although the details are omitted from the drawings.
As a result, the spring is compressed by the sleeve 3f which is 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 and the sleeve 3f is pushed up.

A ridge beating plate 8 is attached to the piston rod so as to be rotatable in a direction perpendicular to the ridge at the time of leveling the ridge. That is, this ridge striking plate 8 has a substantially curved striking surface 8a, and a rectangular cylindrical mounting cylinder 3g fixed to the piston rod is inserted into a fitting cylinder part 8b provided between the side plates. The above-mentioned hitting surface is pivoted so as to be rotatable toward the ridge, and buffer bodies 8c and 8'c made of rubber or the like having a semicircular cross section are sandwiched on both sides of the mounting tube in the direction toward the ridge. has been done.
Note that the hitting surface 8a is covered with a blanket 8e, so that it is particularly effective in removing wet soil.

In this way, the ridge beating plate 8 is rotated together with the piston device 3, and is also rotatably provided toward the ridge. However, in order to adjust the ridge beating plate 8 to the height of the ridge during ridge alignment, it is necessary to A shaft fixing plate 9a is provided at the lower end of the mounting plate 9 supported by the main engine frame 1, a shaft fixing body 9b is provided above,
9c, and a pair of left and right vertical fixed shafts 1 are provided on these.
0 and 11, and the slider 12, which is integrally welded with the support frame 4, is slidably inserted into these fixed shafts through its insertion hole, and the slider 1
A screw hole is formed in the middle of 2, and the screw rod 13 is screwed into the hole.
This screw rod is inserted into the through hole of the shaft fixing body mounting plate 9d to which the shaft fixing bodies 9b and 9c are attached, and its upper part is inserted into the screw rod support plate 9e provided at the upper end of the mounting plate 9, so that it can be rotated freely on this support plate. support. A handle 13a is provided at the upper end of this screw rod, and by operating this handle, the slider 12 is moved up and down, and the support frame 4 is moved up and down.
The slider 12 is fixed to the small diameter portion formed at the location using bolts 14, 14' provided on the sides thereof.
Thereby, the vertical position of the ridge beating plate 8 can be adjusted according to the height of the ridge. 15 is a tail wheel.

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 8.

Adjust the height of the entire ridge leveling machine so that the rotating blades of rotor R can penetrate one side of the ridge and the surface soil of the field.

Next, the height of the ridge beating plate 8 is adjusted by operating the handle 13a to move the slider 12 up or down along the fixed shafts 10, 11, and tighten the bolts 14, 14' in accordance with the height of the ridge. Then, the direction of the tail wheel 15 is adjusted to an acute angle rearward 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 one side 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 piled up in this way is repeatedly vibrated by the ridge beating plate 8.
It is pounded and hardened.

At this time, for example, in the case of a high ridge at the entrance or exit of a rice field, the slider 12 is moved upward,
For other low ridges, move the slider 12 downward and fix it at an appropriate position. At this time, the flexible tube 2
is flexible so it does not hinder its movement. These things apply to the case where the embankment is soft and the ridges are leveled with a low pounding pressure, and conversely, when hard soil is pounded with a high pounding pressure. You can adjust the stroke after the board comes into contact with the soil, and this allows you to adjust the pounding pressure.

In addition, since the piston device 3 is rotatable,
When the ridge leveling machine advances and a thrust load is applied to the ridge beating plate 8, the ridge beating plate 8 is moved by this piston device 3.
At the same time, it is rotated rearward, and this thrust load is released. Then, the piston device 3 is returned to its original position by the ridge beating plate return mechanism 6, and the ridge can be leveled again by the ridge beating plate 8. As a result, the piston rod of the piston device 3 is not subjected to excessive force, and the piston can operate smoothly, and the ridge beating plate can also operate smoothly.

According to the present invention, the piston device is supported on a slider that can freely slide on a fixed shaft in the vertical direction, and a screw rod is screwed into the screw hole of this slider, so that the piston device can be moved up and down by operating the screw rod. The ridge beating plate supported on the piston rod of this piston device can be freely adjusted up and down along with the piston device. For example, when the ridges have different heights, the ridges can be adjusted flexibly. You can pound the embankment by installing a ridge pounding board at the optimal position for the height. As a result, the range of application of the ridge pounding work is widened, and the utility value of the ridge leveling machine can be further increased. Moreover, since the slider can be operated by operating the screw rod, it is easy to handle. In this way, the utility value of the ridge adjustment machine can be further increased.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the ridge adjustment machine of the present invention in use, and FIG. 2 is an enlarged perspective view of a portion thereof. In the figure, A is the ridge straightening machine, 1 is the main engine frame, R is the rotor,
2 is a flexible tube, 3 is a piston device, 8 is a ridge beating plate, 9 is a mounting plate, 10 and 11 are fixed shafts, 12 is a slider, and 13 is a screw rod.

Claims (1)

[Scope of utility model registration request] In a ridge adjustment machine that has an earth raising rotor that digs up mud into the machine frame and heaps it up into old ridges, and a ridge pounding plate that pounds and hardens the mud raised by the earth raising rotor, a hydraulic pump consisting of a piston and a cylinder, and a piston and cylinder are used. A piston device is provided in each of the machine frames, the hydraulic pump and the piston device are connected by a flexible tube, the ridge beating plate is supported on the piston rod of the piston device, and the piston device is provided in the main machine frame of the machine frame. A mounting plate is provided with a vertical fixed shaft, a slider is provided on the fixed shaft so as to be freely slidable, a threaded rod is rotatably supported on the mounting plate and is screwed into a threaded hole formed in the slider, and the slider A ridge straightening machine characterized in that the above-mentioned piston device is supported.