JPH0442964Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a ridge leveling machine, and in particular, to a ridge leveling machine that excavates muddy soil, mounds it up in an old ridge, and pats and compacts this raised soil, the present invention is applied to the surface layer of the old ridge before heaping up this soil. Grass and weathered soil are mainly scraped away from the ridge, and then the blades at the tip of the shaft of the rotor, which is almost perpendicular to the ridge, are used to scrape the sides of the ridge into a flat shape.Then, the rotor excavates the soil and heaps it up into the ridge. It relates to things that are hit with a beating board.

Ridges are built in rice fields to store water by weiring them, to create boundaries with other people's fields, or to provide 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. there were.

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 a ridge, and then pounding the raised soil with a roughly curved beating board to harden the top and sides of the ridge. The beating plate of this ridge leveling machine is rotatably connected to two parallel links that are connected to a rod installed on the power output shaft of the tractor via a crank mechanism and supported on the machine frame. ,
The rod's forward and backward movement is constrained by the deformation movement of a parallelogram by two links, so it operates in a fixed direction, and its workability is improved over previous machines.

However, all of these conventional ridge leveling machines do not remove weathered soil and grass from the surface layer of the old ridges, as would be the case with manual hoeing, but instead pile up soil directly onto the old ridges to level the ridges. Because it is a thing,
The mounded soil does not adhere well to the old ridge, and because this adhesion is not good, when the mound is pounded in the next process, the mound is lifted up while still attached to the ridge pounding board, and the benefit of creating a new ridge is not achieved. Not only that, but the shape and hardness of the ridges after ridge adjustment were uneven, and the appearance was not good.

In order to solve these problems,
Publication No. 37906 discloses a ridge leveling machine that is equipped with a crushing rotor 23 and crushes the upper surface of the ridge before leveling the ridges, but since this ridge leveling machine has a rotor installed parallel to the ridges, The old ridge is cut into an arcuate cross-section and the middle part of the base bone of the old ridge is hollowed out, and then earth is filled and pounded, so even if the top surface of the ridge is well compacted, the ridge is still weak. Not only do they not withstand the pounding pressure and may collapse, but the ridges are so weak that people cannot stand on them when the ridges are first leveled.

As described above, the present invention is based on the conventional ridge leveling machine, which crushes the surface layer of weathered soil and grass in the old ridge and then mounds up the soil, and even if this mound is pounded with a ridge pounding board, the mound is not built up. In order to improve the problem that the strength of the ridge was weakened because the rotor was installed parallel to the ridge and the side surface of the old ridge was hollowed out in an arc-shaped cross section, a rotary blade scraper was developed to scrape off the upper surface of the old ridge. The present invention provides a ridge straightening machine in which a rotor is provided in a direction substantially perpendicular to the ridge.

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 leveling machine.The machine frame 1 of the ridge leveling machine A is attached to a mounting frame a provided at the rear upper part of the tractor T via links b and c. It is rotatably connected to rotatable links d and e provided on both sides of the rear lower part of the tractor, and furthermore, the length of the front upper part of this machine frame 1 and the center of the rear upper part of the tractor can be adjusted freely. connected by adjustment link f. As a result, the ridge straightening machine A, which is held at a predetermined angle by the adjustment link f, can be rotated downward via the mounting frame a, which is rotated by a hydraulic device (not shown). It can be returned to its original position by rotating upward.

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 so that the rotational force of the power transmission shaft is decelerated and directed by the reduction gear to the transmission shaft, and the rotational direction is opposite to the rotational direction corresponding to the traveling direction of the tractor. This causes the axis of the rotor R to rotate in a direction substantially perpendicular to the direction of travel of the tractor and in a direction opposite to the direction of rotation with respect to the direction of travel of the tractor. A plurality of rotating blades are attached to the rotor R, and the length of the blades becomes shorter toward the tip of the rotor shaft, and the blades at the tip mainly scrape off the sides of the ridges, and the blades at the tip gradually become longer. The soil from the rice fields dug up by the blade is now raised up into ridges. 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, in which a plunger operates in a cylinder through a cam and a crank to the reducer, and repeats suction and discharge of oil like a water gun, for example. A piston device 3 is connected to this plunger pump via a flexible tube 2 made of rubber or the like, so that the piston is operated by the hydraulic pressure generated by the plunger pump.

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 top and side surfaces of the ridge as a ridge alignment plate. 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. Then, pure wool or wild cow fur is pasted on the beating surface of this ridge-beating board.
In particular, it is designed to release soil easily from sticky soil.

In the ridge shaping machine having such a main configuration, as shown in FIG. 2, a spiral blade shaving body 5 as a rotary blade shaving body shaves the upper surface layer of the old ridge during ridge shaping work in front of the rotor R. It is set up so that it can be taken. That is, in this spiral blade sharpening body 5, a spiral blade 5a is attached to a shaft 5b, this shaft 5b is supported through a bearing 6, and pulleys 7a and 7b capable of changing in two steps are attached to the tips of the shaft 5b, and these pulleys are connected to a belt or the like. It is connected to the transmission shaft of the rotor R (not shown) by a transmission body.

The spiral blade sharpener 5 having such a configuration has its bearing 6 fitted into the long groove 8a of the spiral blade sharpener holding piece 8 supported by the machine frame 1 so as to be vertically movable. Cut grooves 8 formed on both sides of 8
Bolts 9a and 9b are inserted into bolts b and 8c such that their tips can move vertically, and are fastened to the side surface of the helical blade sharpener holding piece 8 by nuts 9c and 9d. In this way, the vertical position of the spiral blade sharpener 5 can be easily adjusted. The longitudinal position of the shaft can be adjusted, for example, by providing movable flanges so as to sandwich the bearing 6 therebetween.

In addition, 10 is a tail wheel, and 11 is a soil leak prevention plate that can be moved up and down.

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 4 are operated by attaching it to a rice field and driving the power take-off shaft g. 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.
Further, the position of the spiral blade scraping body 5 is determined so that the spiral blade 5a is in contact with the upper surface of the old ridge, and then the height of the ridge beating plate 4 is adjusted to the height of the ridge, and the tail wheel 10
Adjust the orientation to be at an obtuse angle forward with respect to the ridge. In this state, when the tractor is moved parallel to the ridge, the spiral blade 5a scrapes the surface layer of the upper surface of the old ridge and drops the scraped soil, grass, etc. to one side of the ridge. Then, the rotating blades of the subsequent rotor R scrape or dig up the side surfaces of the ridge and the surface soil of the rice field, and heap this soil into the ridge. The soil thus piled up is pounded and compacted by a ridge pounding board 4.

In this way, the upper surface of the old ridge is scraped off by the rotary blade scraper and the side surfaces are scraped off by the rotor. The weathered soil and grass on the surface of the sides have been removed and new soil has been exposed, allowing the soil to adhere better to the mound. Therefore, when pounding this mound with a ridge pounding board, the soil does not stick to the ridge pounding board. Because its adhesion strength is superior to its adhesion strength, the raised soil is well compacted into the ridges without being lifted up by the ridge pounding board. On this occasion,
Since the sides of the old ridge are carved into a flat shape by the rotor, the base bone at the core of the old ridge remains in a trapezoidal shape.
The rotor is provided parallel to the ridge, and the old ridge is cut into an arcuate cross section, making it possible to maintain greater strength of the ridge than when the center of the ridge is hollowed out.

Although the spiral blade sharpening body has been described above, instead of this spiral blade sharpening body, as shown in FIG. Individual cutting blades 12, 12... having a shape almost similar to are provided spirally spaced apart,
Further, a rotary blade sharpener 13 having discontinuous blades with shafts 12b, 12b provided at both ends may be supported in the same manner as the spiral blade sharpener described above, and may be used so as to be rotatable.
Even if this discontinuous rotary blade scraper is used, soil and grass on the upper surface of the old ridge can be scraped off similarly to the spiral blade scraper described above.

As explained above, according to the present invention, a rotary blade scraper is provided to scrape off the surface layer on the upper surface of the old ridge, and a rotor is provided in a direction substantially perpendicular to the ridge to flatten the surface layer on the side surface of the ridge. Since the soil is scraped away, the soil adheres well when leveling the ridge, and when the embankment is pounded, the soil is less likely to be lifted up by the ridge pounding board, and the pounding pressure of the ridge pounding plate is faithfully transmitted to the embankment without omission. be done.

In addition, since the sides of the old ridge are only cut into a flat shape, and the core remains trapezoidal, the strength of the new ridge created by pounding the soil piled up on this ridge is similar to that of the old ridge. Can be held large.

In this way, the strong foundation bones of the old ridge remain as they are, and the top and one side of the ridge are well pounded with new soil, so the synergistic effect of the rotor, which is almost perpendicular to the ridge, and the rotary blade scraper, It is possible to create ridges that are stronger than ever before, are uniform in shape, hardness, etc., and have a good appearance.Furthermore, the number of defects in the ridges is reduced, which improves the workability of ridge alignment.

[Brief explanation of the drawing]

Fig. 1 is a perspective view from the rear of the ridge straightening machine of the present invention in use; Fig. 2 is a perspective view from the front;
FIG. 3 is a perspective view of a rotary blade shaving body of a ridge straightening machine according to another embodiment. In the figure, T is a tractor, A is a ridge leveling machine, R is a rotor, g is a power take-off shaft, 1 is a machine frame, 4 is a ridge beating plate,
5, 13 are rotary blade sharpeners, and 5 is a spiral blade sharpener.

Claims (1)

[Scope of utility model registration request] In a ridge adjustment machine that has an earth raising rotor that excavates mud into the machine frame and heaps it up into old ridges, and a ridge pounding plate that beats and hardens the mud raised by this earth raising rotor, the shaft of the earth raising rotor is placed in the ridge. The earth raising rotor is installed in a direction substantially perpendicular to the rotor, and the plurality of rotating blades of this earth raising rotor are installed so that they become shorter toward the tip of the rotor shaft, and the surface layer of the upper surface of the old ridge before this earth raising rotor heaps up mud. A ridge shaping machine equipped with a rotary blade scraper that scrapes away the ridges with a rotating blade.