Land preparation equipment

Abstract

To provide a land leveling device that can efficiently level materials. [Solution] The system consists of a blade section 2, a leveling body 3, a blade section height adjustment section 4 for adjusting the height of the blade section, and a leveling body height adjustment section 5 for adjusting the height of the leveling body 3. The blade section consists of a blade 21, blade section side plates 22 provided on both sides of the blade's direction of travel, and a scraper 23 provided at the lower end of the blade. A roller 6 that contacts the work surface W is rotatably mounted and attached to a mounting plate 36 that coaxially rotatably mounts the blade section side plates and the leveling body side plates, so that it is located inside the blade section side plates and outside the leveling body side plates 35. Large pile-shaped materials M are roughly leveled by cutting and moving them with the blade section. Then, the leveling body located behind the blade section precisely levels the parts that could not be leveled in the primary leveling, so that the leveled surface S of the materials M is leveled.

Description

Technical Field

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[0001] The present invention relates to a leveling device for leveling materials laid on a working surface, such as large sawdust and rice husks.

Background Art

[0002] In barns and chicken coops, etc., it is necessary to lay materials such as large sawdust and rice husks as thinly and evenly as possible for the following reasons. For example, in the case of chickens, chicks and young chickens may have difficulty getting over large uneven parts on the materials and may even become unable to walk. Also, when the thickness of the materials increases, their leg tips may get caught in the materials, making it impossible for them to walk. It is said that when birds are stressed in this way, the taste of the meat deteriorates. Therefore, it is necessary to lay materials such as large sawdust and rice husks as thinly and evenly as possible.

[0003] Conventionally, since there is no suitable dedicated device, for example, a snowplow has been diverted for laying.

[0004] However, in the diverted machine, since the surface shape and properties of the materials have fibrous or fine uneven protrusions, the materials are likely to get entangled with each other.

[0005] For this reason, in order to thinly spread the materials on the floor, if the gap between the floor surface and the lower end of the blade is small, it may not be possible to spread them evenly.

[0006] In such a case, as a countermeasure, it is possible to increase the gap between the floor surface and the lower end of the blade part and lay the materials thicker, but then, an unnecessarily large amount of materials will be consumed, which is not economical.

Prior Art Documents

Patent Documents

[0007]

Patent Document 1

[0008] Based on the above background, the present invention aims to provide a ground leveling device capable of efficiently leveling materials. Another objective is to make the materials as thin and even as possible. [Means for solving the problem]

[0009] To solve the above problems, the ground leveling device according to the present invention is a ground leveling device comprising a blade section provided in front of the vehicle in the direction of travel for pushing out materials and a ground leveling body provided behind the blade section for leveling the materials, wherein the blade section is formed in an arc shape that is curved inward in the opposite direction of travel, and the ground leveling body is provided with a grid of multiple main reinforcing bars provided in the width direction of the blade section and multiple connecting reinforcing bars connecting the main reinforcing bars, with multiple openings formed between each main reinforcing bar and each connecting reinforcing bar, and further comprising a blade section height adjustment section and a ground leveling body height adjustment section for adjusting the heights of the blade section and the ground leveling body, respectively. Furthermore, the ground leveling device according to claim 2 is characterized in that, in the ground leveling device according to claim 1, the blade height adjustment part consists of a first elongated hole provided in the side plate of the blade and a first fixing member movably fixed to the first elongated hole, the ground leveling body height adjustment part consists of a second elongated hole provided in the mounting plate of the ground leveling body and a second fixing member movably fixed to the second elongated hole, the blade side plate, the mounting plate and the ground leveling body side plate are provided coaxially, and a plate-shaped roller that contacts the work surface is attached to the ground leveling body side plate. Furthermore, the ground leveling device according to claim 3 is characterized in that, in the ground leveling device according to claim 2, the roller is provided so as to be located inside the side plate of the blade section and outside the side plate of the ground leveling body. Furthermore, the ground leveling device according to claim 4 is characterized in that, in the ground leveling device according to claim 3, at least the outer surface of the roller that comes into contact with the ground is made of resin. Furthermore, the ground leveling device according to claim 5 is a ground leveling device according to any one of claims 2 to 4, characterized in that the first elongated hole and the second elongated hole are provided with a plurality of enlarged diameter holes and narrowed diameter holes in the middle of the holes, the first fixing member is detachably fitted into the first elongated hole, and the second fixing member is detachably fitted into the second elongated hole. Furthermore, the ground leveling device according to claim 6 is characterized in that, in the ground leveling device according to claim 1, each of the main reinforcements and each of the connecting reinforcements are made of rod material, and each of the openings is formed surrounded by the main reinforcements and connecting reinforcements. Furthermore, the ground leveling device according to claim 7 is characterized in that, in the ground leveling device according to claim 6, the connecting reinforcement is connected to the main reinforcement in a cross shape. Furthermore, the ground leveling device according to claim 8 is characterized in that, in the ground leveling device according to claim 7, the connecting reinforcement is perpendicular to the main reinforcement. Furthermore, the ground leveling device according to claim 9 is characterized in that, in the ground leveling device according to claim 7, the connecting reinforcement is installed at an angle to the main reinforcement. Furthermore, the ground leveling device according to claim 10 is characterized in that, in the ground leveling device according to any one of claims 1 to 9, the ground leveling body is connected to the rear of the blade portion, and the ground leveling body and the blade portion are provided on the vehicle body. Furthermore, the land leveling device according to claim 11 is characterized in that, in the land leveling device according to any one of claims 1 to 9, extended land leveling bodies formed in a grid pattern are provided on both sides of the land leveling body. Furthermore, the ground leveling device according to claim 12 is characterized in that the extended ground leveling body is foldable, in the ground leveling device according to claim 11. Furthermore, the ground leveling device according to claim 13 is characterized in that, in the ground leveling device according to any one of claims 1 to 9, the ground leveling body is connected to the rear of the vehicle body. Furthermore, the ground leveling device according to claim 14 is characterized in that, in the ground leveling device according to any one of claims 1 to 9, the ground leveling body is connected to the rear of the blade portion. [Effects of the Invention]

[0010] For convenience, the same reference numerals used in the section on embodiments will be used for explanation. In the present invention, first, a large pile of material M is roughly leveled by cutting and moving it with the blade section 2. Next, the leveling body 3 located behind the blade section 2 precisely levels the parts that could not be leveled in the primary leveling, so that the leveled surface S of the material M is made level.

[0011] The blade section 2 roughly levels the ground, and the leveling body 3 gradually levels it in stages. Because they work together to level the ground, even materials M that tend to stick together can be gradually broken down and leveled.

[0012] Furthermore, since the leveling body 3 is constructed in a grid pattern, and the constituent rods are arranged in the front, back, left, and right directions relative to the direction of travel as multiple main reinforcements 31 and multiple connecting reinforcements 32, there is no formation of lumps caused by forcibly pressing the material M downwards, and there are no poor leveling issues. As a result, the material M is leveled gradually and in stages, making it possible to level the ground evenly.

[0013] During the initial leveling process, a roller 6 is provided at the lower end of the blade section 2 to restrict its downward rotation, allowing the material M to pass through without difficulty. This ensures that the gap height does not change during the leveling work.

[0014] Therefore, the material M can be extruded and leveled efficiently. [Brief explanation of the drawing]

[0015] [Figure 1] This is a perspective view showing a first embodiment of the land leveling device according to the present invention. [Figure 2] This is an exploded perspective view showing the main parts of Figure 1 disassembled and enlarged. [Figure 3] This is a side cross-sectional view of the main part of Figure 1, showing the case where the blade is in a low position. [Figure 4] This is a side cross-sectional view of the main part of Figure 1, showing the case where the blade is in a high position. [Figure 5] This is a bottom view of Figure 1. [Figure 6] It is a right side view of FIG. 1. [Figure 7] (A) shows the fixed state of each fixing part of FIG. 1, and (B) shows the released state of each fixing part of FIG. 1. [Figure 8] It is a front view of FIG. 2, showing the state just before the land leveling operation. [Figure 9] It is a front view of FIG. 2, showing the state during the land leveling operation. [Figure 10] It is a perspective view showing a second embodiment of the land leveling device according to the present invention. [Figure 11] It is a perspective view showing a third embodiment of the land leveling device according to the present invention. [Figure 12] It is a perspective view showing a main part of a fourth embodiment of the land leveling device according to the present invention. [Figure 13] It is a side view showing a main part of a fifth embodiment of the land leveling device according to the present invention. [Figure 14] It is a plan view showing a main part of a sixth embodiment of the land leveling device according to the present invention.

Best Mode for Carrying Out the Invention

[0016] Next, based on the drawings showing the embodiments, the land leveling device according to the present invention will be described in more detail. For the sake of convenience, parts having the same function are denoted by the same reference numerals and their descriptions are omitted.

[0017] The ground leveling device 1 according to the present invention comprises a blade section 2, a ground leveling body 3, a blade section height adjustment section 4 for adjusting the height of the blade section 2, a ground leveling body height adjustment section 5 for adjusting the height of the ground leveling body 3, a running section 7, and a handle section 8. The blade section 2 comprises a blade 21, blade section side plates 22 provided on both sides of the blade 21 in the direction of travel, and a scraper 23 provided at the lower end of the blade 21. The blade 21 is formed in an arc shape that is curved inward in the direction opposite to travel. In the illustrated example, the upper part 21a of the blade 21 is formed in an arc shape that is curved inward in the direction opposite to travel as described above, and the lower part 21b is formed in a substantially straight shape. 24 is a connector for the blade 21, and 25 is a connector for the blade section side plates 22. 36 is a mounting plate, which is rotatably mounted coaxially with the ground leveling body side plate 35, which is arranged on the inside, by a connecting shaft 26 protruding from the blade section side plate 22, which is arranged on the outside. The mounting plate 36 is also formed to be as thin as possible. The blade portion 2 is integrally connected to the handle 81 and can be raised and lowered by raising and lowering the handle 81, starting from the rear of the travel portion 7. In this embodiment, the handle 81 is raised when the gripping portion 82 is pushed down.

[0018] The leveling body 3 consists of multiple (five in this embodiment) main reinforcement bars 31 in the horizontal direction. Each main reinforcement bar 31 is spaced apart in the width direction of the blade 21. Multiple (fifteen in this embodiment) connecting reinforcement bars 32 are arranged horizontally on top of each main reinforcement bar 31 and perpendicular to the main reinforcement bar 31, and connected. Each main reinforcement bar 31 and each connecting reinforcement bar 32 are connected in a grid pattern to form a grid net 33, and a total of 56 openings 34 are formed between each main reinforcement bar 31 and each connecting reinforcement bar 32, with four rows in the front-to-back direction and fourteen rows in the left-to-right direction. 35 is a side plate of the leveling body, and is provided on both sides in the width direction of the leveling body 3. The leveling body 3 is provided behind the lower end 23a of the blade section 2, and its lower surface is positioned lower than the lower end 23a of the blade section 2, as shown in Figure 9. Also, the lower surface of the leveling body 3 is provided approximately parallel to the lower end of the blade section 2 when viewed from the direction of travel. Furthermore, during the leveling work, the lower surface of the leveling body 3 is set to be approximately parallel to the side view work surface W, as shown in Figure 9.

[0019] 4 is the blade height adjustment section, which, as best shown in Figure 2, consists of a first elongated hole 41 provided at the rear of the blade side plate 22 and a first fixing member 42 that is movably fitted into the first elongated hole 41. The first elongated hole 41 is formed in an arc shape and includes a plurality of enlarged diameter holes 41a (five in the illustrated example) and a plurality of narrowed diameter holes 41b. The first fixing member 42, as best shown in Figure 7, consists of a threaded portion 42a, with a stepped portion 42b having a larger diameter than the threaded portion 42a continuing outward, and a head portion 42c having a larger diameter than the stepped portion 42b continuing outward.

[0020] 5 is a leveling body height adjustment section, consisting of a second elongated hole 51 provided at the rear of the mounting plate and a second fixing member 52 that is movably fitted into the second elongated hole 51. The second elongated hole 51 is formed in an arc shape and is provided with a plurality of enlarged diameter holes 51a (five in the illustrated example) and a plurality of narrowed diameter holes 51b in the middle of the hole. The second fixing member 52 consists of a threaded portion 52a, with a stepped portion 52b having a larger diameter than the threaded portion 52a continuing outwards, and a head portion 52c having a larger diameter than the stepped portion 52b continuing thereafter.

[0021] The threaded portion 42a of the first fixing member 42, which adjusts the height of the blade portion 2, has a smaller diameter than the enlarged hole 41a and the reduced diameter hole 41b of the first elongated hole 41, as is best shown in Figure 7, and is relatively free to move within the first elongated hole 41. The stepped portion 42b is larger than the threaded portion 42a, has a larger diameter than the reduced diameter hole 41b, and has a smaller diameter than the enlarged diameter hole 41a. Therefore, it cannot move within the first elongated hole 41 when tightened (Figure 7(A)). On the other hand, when the tightening is released (Figure 7(B)) and the stepped portion 42b is positioned outside the reduced diameter hole 41b and the enlarged diameter hole 41a, it can move relatively within the first elongated hole 41. The head portion 42c is formed to be large so that it is easy for the operator to grip, and has a larger diameter than the reduced diameter hole 41b and the enlarged diameter hole 41a. The second fixing member 52 for adjusting the height of the leveling body 3 has the same structure as the first fixing member 42, and has a threaded portion 52a, a stepped portion 52b, and a head 52c, and moves movably within the second elongated hole 51 and is fitted into the appropriate position. In the case of the leveling body height adjustment section 5, the second fixing member 52 has a mounting plate 36 provided with the second elongated hole 51 which is movably fitted to the leveling body side plate 35 of the leveling body 3.

[0022] The leveling body side plate 35 and the mounting plate 36 described above are pivotally attached coaxially to the blade section 21 by a connecting shaft 26 protruding from the rear of the blade section side plate 22.

[0023] The rollers 6 are rotatably mounted and, as best shown in Figure 5, are attached in pairs to the lower part of the mounting plate 36, on the left and right sides, so as to be located inside the blade side plate 22 and outside the leveling body side plate 35. The rollers 6 are in contact with the work surface (floor surface) W and, in conjunction with the leveling body 3 equipped with a grid net 33, as well as the first fixing member 42, the second fixing member 52, and the first and second elongated holes 41 and 51, play a role in maintaining and regulating the height of the leveled surface. At least the surface of the rollers 6 is resin-coated. In the illustrated example, the entire roller 6 is made of resin. The rollers 6 are formed to be as thin as possible.

[0024] The leveling device 1 has a vehicle frame 9 aligned with the direction of travel, with running sections 7 on both sides, and a battery (not shown) mounted on the vehicle frame 9. The running section 7 has drive wheels 71 at the front and driven wheels 72 at the rear, with a crawler belt 73 stretched between the two wheels. A drive motor 74 is mounted on the drive wheel 71. In the illustrated example, the lugs on the outer circumference of the crawler belt 73 are omitted.

[0025] The handle section 8 consists of a handle 81 provided on the vehicle body and connected to the blade 21, a pair of left and right gripping sections 82 formed at the tip of the handle 81, and an operating section 83 provided on the gripping sections 82 for controlling the travel section 7 and the motor output. By moving the gripping sections 82 up and down, the blade section 2 also moves up and down in conjunction with the gripping section 82.

[0026] 9 represents the vehicle's frame. The arrows in the diagram indicate the vehicle's body.

[0027] Looking at the dimensions of each part, the contact length of the crawler belt 73 with the running surface is 29 cm in length and 8 cm in width, and the total contact pressure on both sides is 0.0151 MPa. The machine weight is 70 kg. In the walking type embodiment described later, the contact pressure of a 70 kg human foot is 0.028 MPa. The set laying thickness of material M is 1 to 5 cm and can be adjusted in 1 cm increments. In this embodiment, the diameter of the rods constituting the main reinforcement 31 and connecting reinforcement 32 is 4 mm, and the opening 34 is approximately 50 mm square.

[0028] <Method for adjusting the position of the blade section 2 and the leveling body 3>

[0029] First, the height of the lower end of the blade section 2 is determined. The height of the lower end of the blade section 2 is adjusted by the contact of the roller 6 with the ground and the rotation of the mounting plate 36. Specifically, the mounting plate 36 is rotated until the roller 6 touches the ground, and the blade section side plate 22 and the mounting plate 36 are fitted onto the leveling body side plate 35.

[0030] The height of the lower end of the blade section 2 should be such that the material M can pass through. Even if the material M has irregularities, lumps, or uneven areas due to fibers, the height should be adjusted so that it does not get stuck at the lower end of the blade section 2.

[0031] The operation to fix the rotation of the blade side plate 22 is performed by fitting the first fixing member 42, which is movably fitted into the first elongated hole 41, into an enlarged diameter hole 41a at an appropriate position via the mounting plate 36.

[0032] Next, the leveling body 3 is rotated relative to the mounting plate 36 and the blade side plate 22 to adjust it so that the lower surface of the leveling body 3 is parallel to the floor surface W.

[0033] Once the height position of the leveling body 3 is determined, the mounting plate 36 and the second fixing member 52 are fixed to the side plate 35 of the leveling body.

[0034] The operation to fix the rotation of the leveling body 3 is performed by fitting the second fixing member 52, which is movably fitted into the second elongated hole 51, into the enlarged diameter hole 51a at an appropriate position.

[0035] As a result of the above operation, the first fixing member 42 and the second fixing member 52 are fitted into the first elongated hole 41 and the second elongated hole 51, respectively, so that the height of the lower end of the blade portion 2 does not move below the height at which the roller 6 makes contact with the ground.

[0036] Since the first elongated hole 41 of the blade side plate 22 is provided with multiple enlarged holes 41a and reduced diameter holes 41b, the uneven surface of the material M can be adjusted in stages. Furthermore, since the mounting plate 36 fixed to the leveling body side plate 35 has a second elongated hole 51, the inclination position of the lower surface of the leveling body 3 can be changed to any position. Since the second elongated hole 51 is also provided with multiple enlarged holes 51a and reduced diameter holes 51b, the uneven surface of the material M can be adjusted in stages.

[0037] <How to use> Let's assume that the materials M are scattered in a pile-like pattern on the floor surface W.

[0038] First, the operator pushes up the gripping portion 82 of the handle 81, lowering the blade portion 2 until the roller 6 touches the ground. At this time, the height from the floor surface W to the lower end of the blade portion 2 is greater than the height from the floor surface W to the lower surface of the leveling body 3. In other words, the gap G1 between the lower end of the blade portion 2 and the floor surface W is greater than the gap G2 between the lower surface of the leveling body 3 and the floor surface W.

[0039] The operator drives the travel unit 7 to move the leveling device 1 forward. As the leveling device 1 moves forward, the blade unit 2 catches the piled-up material M in front of it, and the leveling device 1 continues to move forward. A portion of the piled-up material M is broken down by the blade unit 2 and moves forward.

[0040] The material M, pushed forward by the blade section 2, is gradually supplied to the lower end of the blade section 2 as the leveling device 1 moves forward. The material M passes through the gap G1 between the lower end 23a of the blade section 2 and the floor surface W, moving relatively to the rearward side relative to the blade section 2.

[0041] In the illustrated embodiment, a large gap G1 is formed between the lower end of the blade portion 2 and the floor surface W, so that the material M can pass through without getting stuck at the lower end of the blade portion 2. Thus, the primary leveling is performed as the material M passes over the lower end of the blade portion 2.

[0042] As the vehicle continues to move forward, the material M after the initial leveling reaches the leveling body 3. Since the leveling body 3 is lower than the material M after the initial leveling, it is divided vertically by the front part of the leveling body 3, i.e., the first main reinforcement 31a. Furthermore, the material M located on the front side of the grid net 33 of the leveling body 3 is pushed forward by the advancing leveling body 3.

[0043] The material M after the initial leveling is not necessarily leveled uniformly. Due to the unevenness and fibers of the material M, it may be partially dragged by the scraper 23 at the lower end of the blade, resulting in partial depressions M2 on the leveled surface S. In the illustrated example, depressions M2 are located behind the lower end of the blade section 2, i.e., in front of the first main reinforcement bar 31a, the second main reinforcement bar 31b, and the third main reinforcement bar 31c of the leveled body 3, with protrusions M1 remaining in front of them. Note that the protrusions M1 and depressions M2 are not necessarily located in the example locations, and their position and number may vary depending on the leveling conditions.

[0044] Since only a small amount of material M is extruded from the front, it is possible to fill the recessed area M2 while suppressing drag caused by the unevenness and fibers of material M.

[0045] The material M, which has been cut vertically by the main reinforcement bars 31 located in front of the leveling body 3, is cut vertically again when it reaches the main reinforcement bars 31 located behind it, and is pushed forward by the front end of these main reinforcement bars 31. The pushed-out material M moves forward while filling the depressions M2. By repeating this process sequentially, the secondary leveling is completed while filling the depressions M2.

[0046] Thus, the multiple main reinforcements 31 fill the recesses M2 and move the materials M, which are positioned higher than the main reinforcements 31, relatively backward. As a result, after the leveling body 3 passes over the materials M are at the same height as the underside of the leveling body 3, and uniform leveling is completed.

[0047] Referring to Figure 9, the mechanism of equalization described above can be seen in more detail as follows. First, the material M pushed out by the blade section has large irregularities, as shown in Figure 9. The protruding parts of this material M first hit the first main reinforcement 31a of the leveling body 3, but they go over the first main reinforcement 31a and fall into the first opening 34a. The fallen protruding material M then hits the next second main reinforcement 31b, but it goes over the second main reinforcement 31b and falls into the second opening 34b. Next, the fallen protruding material M hits the next third main reinforcement 31c, but it goes over the third main reinforcement 31c and falls into the third opening 34c. Next, the fallen protruding material M hits the next fourth main reinforcement 31d, but it goes over the fourth main reinforcement 31d and falls into the fourth opening 34d. Thus, the slightly raised material M that falls into the fourth opening 34d hits the last fifth main reinforcement 31e and is uniformly leveled as shown in the figure. Thus, because the leveling body 3 has numerous main reinforcements 31, connecting reinforcements 32, and openings 34, the leveling work is carried out in stages, resulting in the effect of achieving uniform leveling overall.

[0048] The above embodiment has the following effects.

[0049] First, the large, pile-shaped material M is cut and moved by the blade section 2, thereby performing a rough primary leveling. Next, the leveling body 3, located behind the blade section 2, precisely levels the parts that could not be leveled in the primary leveling, so that the leveled surface S of the material M is made level.

[0050] The blade section 2 roughly levels the ground, and the leveling body 3 gradually levels it in stages. Because they work together to level the ground, even materials M that tend to stick together can be gradually broken down and leveled.

[0051] Furthermore, since the leveling body 3 is constructed in a grid pattern, and the constituent rods are arranged in the front, back, left, and right directions relative to the direction of travel as multiple main reinforcements 31 and multiple connecting reinforcements 32, there is no formation of lumps caused by forcibly pressing the material M downwards, and there are no poor leveling issues. As a result, the material M is leveled gradually and in stages, making it possible to level the ground evenly.

[0052] During the initial leveling process, a roller 6 is provided at the lower end of the blade section 2 to restrict its downward rotation, allowing the material M to pass through without difficulty. This ensures that the gap height does not change during the leveling work.

[0053] The width of the roller 6 is made as narrow as possible so that it does not ride up on the materials M after leveling. Therefore, the roller 6 can push aside the materials M minimally and make contact with the floor surface W, making it possible to maintain an appropriate leveling height.

[0054] The height of the roller 6 and the height of the leveling body 3 can be adjusted by connecting shafts 26 provided on the side plates 22 of the blade section. Since these connecting shafts 26 are common fulcrums for the blade section 2 and the leveling body 3, the leveling body 3 can be made parallel to the floor surface W by adjusting the height of the blade section 2. Therefore, the lower surface of the grid net 33 of the leveling body 3 can be brought into contact with the material M to be leveled at the appropriate position with simple operation. In other words, the longitudinal sides of the multiple main reinforcement bars 31 that make up the leveling body 3 are perpendicular to the direction of travel, and five of them are arranged in overlapping positions, so the leveling can be repeated at the same height by each main reinforcement bar 31.

[0055] Furthermore, since the height of the roller 6 and the height of the leveling body 3 can be changed in stages in a concentric arc shape, even if the leveling height differs from one work area to another, the material M can be leveled to the same height, thereby reducing variations in leveling height.

[0056] Since the mounting width of the grid net 33 and roller 6 of the leveling body 3 is less than or equal to the width of the blade, the leveling performance is not reduced even when working near walls or in corners of the floor.

[0057] As the roller 6 travels on the floor surface W, it is possible to prevent the roller 6 from riding up onto the material M that has been laid out on the floor. Therefore, the height of the leveled surface S from the work surface W can be kept constant, and the material M can be uniformly leveled by the leveling body 3. In addition, since the roller 6 is located inside the side plate 22 of the blade section and outside in the width direction of the leveling body 3, it can travel by moving aside the parts that have been leveled to some extent by the blade section 2 without traveling over the material M that has been leveled by the leveling body 3. Because the main reinforcement acts in a continuous sequence, the moving material M is continuously cut and leveled, resulting in a more uniform leveling.

[0058] Furthermore, the leveling body 3 is positioned behind the lower end 23a of the blade section 2, and its lower surface is positioned lower than the lower end of the blade section 2, as shown in Figure 9. The lower surface of the leveling body 3 is positioned approximately parallel to the lower end of the blade section 2 when viewed from the direction of travel. Also, during leveling work, the lower surface of the leveling body 3 is positioned approximately parallel to the work surface W in a side view, as shown in Figure 9.

[0059] The leveling body 3 forming the grid net 33 can divide the material M moving relatively from the front into upper and lower sections using the main reinforcement bars 31 and connecting bars 32, and can also push out the material M that is in front of the main reinforcement bars 31. Furthermore, it is possible to drop the divided material M that has gotten onto the main reinforcement bars 31 and connecting bars 32 through the opening 34 located at the rear. Because the leveling body 3 is formed as a grid net 33, it is possible to level the material M moving relatively from the front in stages.

[0060] Since the main reinforcement bars 31 and connecting reinforcement bars 32 are arranged in a grid pattern in the front-to-back direction, it is possible to suppress the movement of the material M on the grid net 33 in the left-to-right direction during ground leveling. Therefore, it is possible to prevent the material M from moving excessively in the left-to-right direction during ground leveling and to prevent the material M from becoming unevenly distributed after ground leveling.

[0061] The side ends of the leveling body 3 are fixed to the leveling body side plates 35, and their position is adjusted and fixed relative to the blade section 2. The leveling body 3 is pivotally attached to the blade section side plates 22, which protrude from the side ends of the blade section 2 toward the rear, at the front end of the leveling body side plates 35, and is therefore rotatable relative to the blade section 2. By rotating the leveling body side plates 35 relative to the blade section 2, the positional relationship between the leveling height by the blade section 2 and the leveling height by the leveling body 3 can be easily adjusted. The leveling body 3 prevents the materials M being leveled from moving laterally from the top surface of the lattice net 33 because the upper end of the leveling body side plates 35 is located above the top surface of the lattice net 33.

[0062] Since the outer surface of the roller 6 that comes into contact with the ground is made of resin, the risk of insect damage is lower compared to metal or painted rollers. In the case of metal rollers, there is a risk of damage to the body due to fragments from continuous use, hard wear particles, and corrosion (rust, etc.). In the case of painted rollers, there is a risk of harm from chemical substances contained in the paint film. On the other hand, in the case of resin rollers, even if ingested by livestock, the above risks are low, so the burden on the body is relatively low, and the risk of quality deterioration can be suppressed. Therefore, regarding the material of the roller 6, considering the quality of livestock eggs and meat, it is preferable that at least the outer surface that comes into contact with the ground is made of a resin material with some plant material mixed in, and most preferably, the material of the outer surface of the roller that comes into contact with the ground is made of only plant material, such as wood, at least on the outer surface that comes into contact with the ground.

[0063] According to this embodiment, birds can walk without difficulty and without causing them stress. Therefore, a decline in the taste of the meat is prevented. Furthermore, even if livestock consume it, the risk of quality deterioration can be suppressed.

[0064] Since the blade section side plate 22, which is fixed by the mounting plate 36, is provided with a first elongated hole 41, the position of the height limit of the blade 21 can be easily changed by fixing the first fixing member 42 at any position within the first elongated hole 41. The mounting plates 36 are provided on both sides of the leveling body 3, and the left and right mounting plates 36 are not fixed at different heights from each other, so that the lower end of the blade section 2 in the direction of travel can be made parallel to the floor surface W. In other words, the lower end of the blade section 2 can maintain parallelism with respect to the floor surface W.

[0065] Furthermore, since the mounting plate 36 fixed to the leveling body side plate 35 has a second elongated hole 51, the inclination position of the lower surface of the leveling body 3 can be changed to any position. As a result, the side plates 35 on both sides of the leveling body 3 are not fixed at different heights, and the lower end of the blade section 2 and the lower surface of the leveling body 3 can be made parallel to each other in the direction of travel. In other words, since the floor surface W and the lower surface of the leveling body 3 are parallel to each other, the leveling height can be kept constant.

[0066] Since the blade height adjustment section 4 and the leveling body height adjustment section 5 have the structure described above, it is essential to fix them in the enlarged diameter holes 41a, 51a in the middle of the elongated holes 41, 51 when tightening, so the height of the roller 6 and the leveling body 3 can be easily adjusted to the same height on both sides. In addition, because there are reduced diameter holes 41b, 51b, even if one or both of the fixing members 42, 52 loosen, the height of the roller 6 and the leveling body 3 can be maintained without changing.

[0067] Furthermore, since the height of the roller 6 and the height of the leveling body 3 can be changed in stages in a concentric arc shape, even if the leveling height differs from one work area to another, the material M can be leveled to the same height, thereby reducing variations in leveling height.

[0068] The present invention is not limited to the above embodiments. Figure 10 shows a case in which an extended leveling body 37 is provided on the outside in the width direction of the leveling body 3. The extended leveling body 37, like the grid net 33 that constitutes the leveling body 3, consists of a plurality of main reinforcements 31 and a plurality of connecting reinforcements 32, with each rod being formed in a grid pattern and a plurality of openings 34 formed between each rod. In this case, even if there is material M leaking out from the left and right sides of the front blade section 2, it is possible to level it. Furthermore, the extended leveling body 37 makes it possible to level the ground even near a wall. When there are no obstacles on the left and right sides in the direction of travel, the leveling performance is further improved by deploying the extended leveling body 37. Furthermore, the extended leveling body 37 can be made foldable so that it can be freely deployed and stored.

[0069] Figure 11 shows a case where a leveling body 3 is provided behind the running section 7 of the vehicle body. In this embodiment, rollers 6a, 6b, 6c, and 6d are provided at the four corners of the leveling body 3 to maintain the height and inclination relative to the floor surface W at all times, thereby maintaining parallelism with the floor surface W. A roller 61 is also provided on the blade section 2 to restrict downward rotation. In the figure, 36a is another mounting plate for attaching rollers 6a to 6d. The leveling body 3 is towed by two towing members 38. It is desirable to make the roller width of these rollers 6a to 6d and 61 as narrow as possible. By configuring it in this way, it is possible to suppress the trail left on the material M.

[0070] Figure 12 shows a case where the travel unit 7 is omitted and the handle 81 is directly attached to the blade unit 2. In this case, the operator grasps the gripping part 82 at the rear end of the handle 81 and pushes it forward, enabling the blade unit 2 and the leveling body 3 to level the ground. This makes it possible to provide the leveling device 1 according to the present invention in a simpler manner.

[0071] Figure 13 shows the case where the diameter of the main reinforcement bars 31' is progressively larger on the front side in the direction of travel relative to the rear side, in the order of 1st main reinforcement bar 31a' > 2nd main reinforcement bar 31b' > 3rd main reinforcement bar 31c' > 4th main reinforcement bar 31d' > 5th main reinforcement bar 31e'. In this case, the main reinforcement bars 31' with larger diameters have a relatively higher pushing effect on the front, while the main reinforcement bars 31' with smaller diameters have a relatively higher effect of cutting the material M vertically. Therefore, it is possible to adjust as appropriate depending on the nature of the material M to be pushed out. Thus, by progressively increasing the diameter of the main reinforcement bars 31' on the front side in the direction of travel relative to the diameter of the main reinforcement bars 31' on the rear side, depending on the material M, the extrusion efficiency and leveling of the material M can be further improved.

[0072] Figure 14 shows a case where the main reinforcement bars 31 constituting the leveling body 3 are inclined in the front-to-back and left-to-right directions and arranged to intersect each other. In this case, the front of the diagonally arranged main reinforcement bars allows the material M to be leveled while moving in the left-to-right direction. Therefore, the connecting bars that intersect with the main reinforcement bars that move the material M further prevent the material M from spreading in the left-to-right direction in the direction of travel, and it is also possible to cut the material M vertically again.

[0073] Furthermore, for example, the running section 7 may not have four wheels arranged in pairs (front, rear, left, and right), but rather two wheels, one on each side. The presence or absence and number of crawler belts 73 on the running section 7 are also arbitrary. The power source may be an engine. The drive wheels 71 and the motor may be connected via a transmission mechanism. The output of the motor that controls the running section 7 and the raising and lowering of the blade can be controlled remotely, in which case the handle section 8 can be omitted.

[0074] The diameter, cross-sectional shape, and dimensions of the openings of the rods that make up the leveling body 3 are arbitrary and can be changed according to the nature of the work. For example, by increasing the number of rods used and making the grid holes smaller, materials M smaller than the openings will fall through, while foreign objects larger than the openings will not fall through. Therefore, the inclusion of foreign objects in the materials M can be suppressed.

[0075] The cross-section of the rod material does not necessarily have to be circular; it can be elliptical, rectangular, or polygonal. If the rod material is made of wire, it is preferable to install it so that it does not sag between the side plates 35 of the leveling body. Furthermore, if the leveling body 3 is made of resin, it can be made lighter, and the operator who grips the gripping part 82 of the handle 81 will be able to raise and lower themselves more easily.

[0076] While materials M are given as examples such as sawdust and rice husks, the invention is not limited to these. Any material M that can be laid and leveled at a uniform height on the surface to be laid is eligible for application of the present invention. [Industrial applicability]

[0077] The present invention can be used for leveling materials such as sawdust and rice husks, and can be utilized in feed supply, poultry farming, and other applications. [Explanation of symbols]

[0078] 1 Ground leveling device 2 Blade section 21 Blades 21a upper part 21b bottom 22 Blade section side plate 23 Scraper 23a Bottom end 24 Connectors 25 Connectors 26 Connecting shaft 3 Ground leveling body 31 Main reinforcement 31´ main bar 31a 1st main reinforcement 31b 2nd main bar 31c 3rd main bar 31d 4th main reinforcement 31e 5th main reinforcement 31a´ 1st main reinforcement 31b´ 2nd main reinforcement 31c´ 3rd main reinforcement 31d´ 4th main reinforcement 31e´ 5th main reinforcement 32 connecting muscles 33 Grid Net 34 Aperture 34a 1st opening 34b 2nd opening 34c 3rd opening 34d 4th opening 35 Earth leveling body side plate 36 Mounting plate 37 Extended grade structure 38. Traction Member 4. Blade height adjustment section 41 1st long hole 41a Expanded hole 41b Diameter reduction hole 42 First fixing member 42a Threaded part 42b Stepped section 42c head 5. Ground leveling height adjustment section 51 2nd long hole 51a Expanded hole 51b Diameter reduction hole 52 Second fixing member 52a Threaded part 52b Stepped section 52c head 6 Laura 6a Laura 6b Laura 6c Laura 6d Laura 61 Laura 7. Running section 71 Drive wheels 72 Driven wheels 73 Crawler Belt 74 Drive motor 8. Handle section 81 Handle 82 Gripping part 83 Operation section 9. Vehicle frame M Materials S Leveled surface W work surface

Claims

1. A leveling device comprising a blade section for pushing out materials located in the forward direction of travel of the vehicle body and a leveling body for leveling the materials located behind the blade section, The blade portion described above is formed in an arc shape that is curved inward in the opposite direction of travel. The above-mentioned leveling body has multiple main reinforcing bars arranged in a grid pattern in the width direction of the blade portion and multiple connecting reinforcing bars connecting the main reinforcing bars, with multiple openings formed between each main reinforcing bar and each connecting reinforcing bar. The ground leveling device is further characterized by being provided with a blade height adjustment unit and a ground leveling unit height adjustment unit for adjusting the heights of the blade unit and the ground leveling unit, respectively.

2. In the leveling device according to claim 1, the blade height adjustment part comprises a first elongated hole provided in the side plate of the blade and a first fixing member movably fixed to the first elongated hole. The above-mentioned leveling body height adjustment section consists of a second elongated hole provided in the mounting plate of the leveling body and a second fixing member that is movably fixed to the second elongated hole. The blade section side plate, the mounting plate, and the leveling body side plate are provided coaxially. A leveling device characterized in that a plate-shaped roller that contacts the work surface is attached to the side plate of the leveling body.

3. A land leveling device according to claim 2, characterized in that the roller is provided so as to be located inside the side plate of the blade portion and outside the side plate of the land leveling body.

4. A ground leveling device according to claim 3, characterized in that at least the outer surface of the roller that comes into contact with the ground is made of resin.

5. A ground leveling device according to any one of claims 2 to 4, wherein the first elongated hole and the second elongated hole are provided with a plurality of enlarged diameter holes and narrowed diameter holes in the middle of the holes, the first fixing member is detachably fitted into the first elongated hole, and the second fixing member is detachably fitted into the second elongated hole.

6. A ground leveling device according to claim 1, characterized in that each of the main reinforcements and each of the connecting reinforcements are made of rod material, and each of the openings is formed surrounded by the main reinforcements and connecting reinforcements.

7. A ground leveling device according to claim 6, characterized in that the connecting reinforcement is connected to the main reinforcement in a cross shape.

8. A ground leveling device according to claim 7, characterized in that the connecting reinforcement is perpendicular to the main reinforcement.

9. A ground leveling device according to claim 7, characterized in that the connecting reinforcement is installed at an angle to the main reinforcement.

10. A leveling device according to any one of claims 1 to 9, characterized in that the leveling body is connected to the rear of the blade portion, and the leveling body and the blade portion are provided on the vehicle body.

11. A land leveling device according to any one of claims 1 to 9, characterized in that extended land leveling bodies formed in a grid pattern are provided on both sides of the land leveling body.

12. A land leveling device according to claim 11, characterized in that the extended land leveling body is foldable.

13. A leveling device according to any one of claims 1 to 9, characterized in that the leveling body is connected to the rear of the vehicle body.

14. A land leveling device according to any one of claims 1 to 9, characterized in that the land leveling body is connected to the rear of the blade portion.

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