JPH0547537Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field The present invention relates to a ridge leveling machine, in particular, a ridge leveling machine that digs up muddy soil, mounds it up, and then pats and compacts the mounded soil. It relates to a device that prevents soil from adhering to the surface.

Conventional technology Ridges are built in rice fields to store water by weiring them, 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 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.However, 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 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 field. The drawback is that the period of use is limited because it only lasts for a short period of time in early spring, and in an attempt to improve this, a system was developed that used a pump to replenish water, but it was labor-intensive and the operation of the machine was cumbersome. It was hot.

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, and then pounding the mounded soil with a board. The tapping 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 rotatably connected to two parallel links rotatably connected to the machine frame. Therefore, the rod moves according to a constant movement in which the forward and backward movements are constrained by the deformation movement of the parallelogram by the two links.

However, when the ridge pounding plate of this ridge leveling machine is made of steel plate, sticky wet soil tends to adhere to the surface where the mound is pounded, and even if the mound is pounded as it is, it is not possible to obtain uniform and effective pounding pressure. The resulting ridges also had the disadvantage of being irregular in shape. In order to improve this drawback, it has been proposed to form a covering layer of cloth, vinyl, rubber, or porous plastic on the hitting surface, but these methods do not allow the ridges to be repeatedly pounded with violent impact. It is difficult to avoid wear and tear, and there are drawbacks such as the inconvenience of having to prepare spare parts and the time and effort required to replace them.

Problems to be Solved by the Invention As described above, conventional ridge leveling machines have problems with the durability of the covering material that prevents soil from adhering to the ridge beating boards, and improvements have been desired.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides an earth raising means for digging up mud in the machine frame and heaping it up on the old ridge, and pounding the mud raised by the earth raising means. In a ridge straightening machine having a ridge beating plate for hardening, a hydraulic pump consisting of a piston and a cylinder and a piston device consisting of a piston and cylinder are installed in the machine frame, the hydraulic pump and the piston device are connected by a flexible tube, and the above-mentioned A piston device moves the ridge beating plate back and forth in a reciprocating manner, and a first air supply piston device is provided, which includes a cylinder that reciprocates together with the piston of the piston device, and a fixed piston fixed to the machine frame, and the piston of the piston device A second air supply piston device consisting of a piston that reciprocates with the machine frame and a fixed cylinder fixed to the machine frame is provided, and a large number of gas blowing holes are provided on the ridge beating surface of the ridge beating plate, and the first air supply The present invention provides a ridge straightening machine characterized in that a second piston device for supplying air and a second piston device for supplying air communicate with the gas blowing hole to blow out air alternately.

Function: The ridge beating board is operated by a piston device, and an air supply piston device operated by this piston device is provided to blow air out from the gas blowing hole provided on the ridge beating surface of the ridge beating board, so that the ridge beating can be performed easily. It is possible to blow out high-pressure gas using a piston device that operates the plate, and when the ridge-beating surface comes into contact with the soil, air is interposed between them, reducing the contact pressure of the soil against the ridge-pounding surface. Adhering soil is also blown away by air pressure.

Embodiment 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 straightening 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 reducer is connected to a power transmission shaft which is connected to a power take-off shaft g of a tractor via a universal joint (not shown), a transmission shaft is connected to this reduction gear, and a transmission shaft is connected to this transmission shaft. A rotor R is attached, whereby the rotational force of the power transmission shaft is decelerated 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 shaft of the rotor R is oriented substantially perpendicular to the direction of travel of the tractor, and the rotation direction 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 upper part and both sides of the rotor, and 1'a is a vertical moving plate having wheels that run on the upper surface of the ridge.

Further, although not shown in the ridge adjustment machine A , a plunger pump like a water gun is connected to the speed reducer via a crank mechanism, 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.

As shown in FIG. 2, this piston device 3 includes a sleeve 3a having a square cross section that is fixed to a piston rod 3d of a piston 3c inserted into a cylinder 3b and moves forward and backward together, and an end of a closing plate attached to the cylinder 3b. A spring 3f is provided between the sleeve 3a and a square guide body 3e that slides and guides the inner surface of the sleeve 3a formed by enlarging the area and prevents rotation, and when the sleeve 3a is lowered by the action of hydraulic pressure. The spring 3f is compressed, and when the hydraulic pressure is released, the sleeper 3a is lifted up by the elastic force of the spring 3f.

As shown in FIG. 1, this piston device 3 is rotatably supported by a support frame 4, and its rotation range is limited by a ridge beating plate return mechanism 5 so that it can return to its original position. ing.

A rod 3g is attached to the bottom plate of the sleeve 3a to which the piston rod 3d is attached,
A ridge beating plate 6 is attached to this rod 3g. That is, the ridge beating plate 6 is positioned so that it can move forward and backward toward the core of the ridge, and is rotatably supported by the piston rod. As shown in FIG. 3, the shape of this ridge pounding board 6 includes a roughly square shaped pounding plate for pounding the soil piled up on the top and side surfaces of the ridge, and an upright wall at the front and back.
In addition, a gas circulation cavity 7 is formed, which is composed of a beating plate cavity 7a, a front standing wall cavity 7b, and a rear standing wall cavity 7c, each having a constant hollow thickness and corresponding to these shapes. A large number of gas blowing holes 8, 8, . . . are formed on the outer wall surface of the cavity. This gas distribution cavity 7 is provided with air distribution pipes 9 and 9' (note that the hole in 9' is provided on the opposite side) as shown in FIG. 4 so that air is distributed to each cavity. One end of these air distribution pipes penetrates the rear standing wall cavity 7c and projects outward.

10 is a first air supply piston device, and 11 is a second air supply piston device. The first air supply piston device 10 includes the sleeve 3a.
A piston 10b is fitted into a cylinder 10a fixed to the cylinder 10a, and the piston rod 10c is fixed to a support member which rotatably supports the piston device 3 on the support frame 4. Further, at the bottom of the cylinder 10a, an inverted conical valve cylinder 10a-1 is attached to a porous plate 10.
It is attached via a-2 (or a net), and a light valve ball 10a-3 like a ping-pong ball is provided thereto, so that it can communicate with the outside air or block it. Further, an air outlet pipe 10d is attached to the bottom of the cylinder 10a, into which a flexible pipe 10e is fitted, and this flexible pipe 10e is fitted into the end of the air distribution pipe 9'. . The second air supply piston device 11 also has the same shape as the first air supply piston device 10, and the cylinder 11 is fixed to the support member via an intermediate member.
A piston 11b is fitted into the cylinder 11a, and its piston rod 11c is fixed to the sleeve 3a, and the bottom of the cylinder 11a has a valve cylinder 11a-1, a porous plate 11a-2, and a valve ball 1 similar to those described above.
1a-3, and the air outlet pipe 11d provided at the bottom of the cylinder and the air distribution pipe 9 are connected to each other by a flexible pipe 11e.

In order to adjust the height of such a ridge beating board 6 to the height of the ridge when leveling the ridge, the slider 12 attached to the support frame 4 is moved up and down from the screw rod 13 along the fixed axis, as shown in FIG. To do this. These vertical movement mechanisms such as sliders are attached to a mounting plate 14, and this mounting plate is attached to a horizontal position adjustment plate 15. Note that 16 is a tail wheel that runs along the wall of the depression left by the rotor R.

Next, the operation of this embodiment will be explained.

First, as shown in Figure 1, the ridge leveling machine A is moved to the tractor T.
The rotor R and the ridge beating board 6 are operated by attaching it to a rice field and driving the power take-off shaft g. Then, the vertical position of the rotating blade of the rotor R is adjusted according to the height of the entire ridge straightening machine, and the position of the ridge beating plate 6 is also adjusted to the ridge beating state.

When the tractor T is moved parallel to the ridge in this state, the rotating blades of the rotor R dig up the side surfaces of the ridge and the surface soil of the rice field, send this soil to the tip side, and heap it up on the ridge. The soil thus piled up is pounded and compacted by the ridge pounding plate 6 which vibrates repeatedly.

At this time, the ridge beating plate 6 is repeatedly moved forward and backward as the sleeve 3a moves forward and backward by the hydraulic operation of the piston device 3 to perform the ridge beating operation. The piston 11b of the second air supply piston device 11 also advances and retreats together,
As a result, when the ridge beating plate 6 advances, the air in the cylinder 11a of the second air supply piston device 11 is compressed, causing the valve ball 11a-3 to cut off communication with the outside air, and thereby the compressed air is Gas distribution cavity 7 from air distribution pipe 9 through flexible pipe 11e
This air is supplied to the gas outlet holes 8, 8...
It is blown out from. On the other hand, the cylinder 10a of the first air supply piston device 10 also advances, but since the piston 10b is fixed, the outside air flows into the cylinder 10a while floating the light and easily movable valve ball 10a-3. To prevent soil from being sucked into the gas blowing holes 8, 8, . . . of the ridge beating board 6.

Also, when the ridge beating plate 6 retreats, the cylinder 10 of the first air supply piston device 10
As valve a moves backward, the valve ball 10a-3 blocks off the outside air, compressing the air and supplying it to the air distribution pipe 9', which in turn passes through the gas blowing holes 8, 8, . . .
On the other hand, when the piston 11b of the second air supply piston device 11 retreats, the valve ball 10a-3 floats and outside air is sucked in, thereby preventing soil from being sucked into the gas blowing holes 8, 8... .

In this way, the gas blowing hole 8 of the ridge beating plate,
As a result of the fact that air is constantly blown out from 8..., when the ridge-beating board hits the embankment of the ridge, the soil adhering to the ridge-beating board is blown away by this air as it retreats. Since the attached soil is removed in this way, even if the ridge pounding surface is made of a steel plate, the ridge can be pounded without soil adhering to it. In particular, since the pressure of the air supplied from the air supply piston device can be increased, the above-mentioned soil blowing effect can be increased.

Note that the number of air supply piston devices is not limited to two, and a large number may be provided so that high pressure air can be supplied to all the gas blowing holes of the ridge beating plate. Further, exhaust gas from the tractor engine may be supplied at the same time.

In the above, the air distribution pipes 9 are provided as shown in Fig. 4, but a plurality of branch pipes are also provided on both sides of these pipes, and a large number of gas blowing holes are provided in these branch pipes so that the air supplied to the tip side is You can make sure that you don't run out. The same applies to the air distribution pipe 9'.

In addition, the ridge beating board may have a plurality of steps on the front side of the beating surface, and on this beating surface, for example, holes are made using materials such as pure wool or leather that release soil easily so as not to obstruct air blowing. It may also be coated.

Furthermore, the above-mentioned rotor may be a rotor that digs only the ridges, or a plurality of rotors that dig only the field soil and pile it up in the ridges. Also, this rotor may be parallel to the ridges, or even a plow instead of a rotor. Of course, something like this would also be fine.

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 the ridge leveling machine was equipped with a prime mover to make it self-propelled, and the power was used to operate the ridge pounding board. It goes without saying that the ridge beating board may be operated in the same manner.

Effects of the Invention As explained above, according to the present invention, the piston device for operating the ridge beating plate is used to operate the air supply piston device, thereby causing the gas blowout provided on the ridge beating surface of the ridge beating plate to be operated. Since the air is blown out from the hole, there is no need to provide a special drive source for the air supply piston device, and all you need to do is attach a simple device, so the cost is low, and high-pressure air can be blown out. When the ridge pounding board separates from the embankment and retreats, the soil adhering to the ridge pounding surface can be blown away. In this way, the soil adhering to the ridge beating surface is removed, so even if the ridge beating plate is made of a steel plate, the ridges can be leveled using the surface to which soil does not adhere. This makes it possible to improve the quality of ridge preparation and work efficiency.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of one embodiment of the ridge adjustment machine of the present invention in use, Fig. 2 is a partially enlarged perspective view thereof, Fig. 3 is a perspective view of its ridge beating plate, and Fig. 4 is its air distribution pipe. FIG. In the figure, A is the ridge straightening machine, 1 is the main engine frame, R is the rotor,
3 is a piston device, 6 is a ridge beating plate, 8 is a gas blowing hole, 10 is a first air supply piston device,
11 is a second air supply piston device.

Claims (1)

[Scope of utility model registration request] A ridge leveling machine has a soil raising means for digging up mud in a machine frame and heaping it up into old ridges, and a ridge pounding plate for pounding and compacting the mud raised by the soil raising means, and a hydraulic pump consisting of a piston and a cylinder, and a piston. A piston device consisting of a cylinder is provided in the machine frame, the hydraulic pump and the piston device are connected through a flexible tube, and the piston device causes the ridge beating plate to move back and forth in a reciprocating manner, so that it moves back and forth together with the piston of the piston device. A first air supply piston device is provided, which includes a cylinder that moves, and a fixed piston fixed to the machine frame, and a second air supply device includes a piston that reciprocates together with the piston of the piston device, and a fixed cylinder fixed to the machine frame. a piston device for air supply, a large number of gas blow-off holes are provided on the ridge-beating surface of the ridge-beating plate, and the gas blow-off holes are communicated with the first air supply piston device and the second air supply piston device; A ridge shaping machine that is characterized by blowing out air alternately.