JP6367034B2 - Ground maintenance equipment - Google Patents

Description

  The present invention relates to a ground maintenance device.

  Various maintenance devices have been proposed in the past for preparing school grounds such as school grounds, nursery schools and kindergartens, as well as stadiums for various sports such as baseball, soccer, and athletics (for example, Patent Document 1 and Patents). Reference 2). In this specification, school grounds such as school grounds, nursery schools, and kindergartens, and stadiums that perform various competitions such as baseball, soccer, and athletics are referred to as “ground” in a broad sense. For this reason, the maintenance device for maintaining the ground is referred to as a “ground maintenance device”.

  FIG. 9 is a view for explaining a ground maintenance device 800 described in Patent Document 1. In FIG. As shown in FIG. 9, a ground maintenance instrument 800 described in Patent Document 1 includes a rectangular mesh plate 810 and a scooping plate extending obliquely downward from the front long side of the mesh plate 810, for example. 820, a wheel 830 that is rotatably provided further to the front side of the scooping plate 820, a brush roller 840 that is provided on the rear side of the rear long side of the mesh plate 810, and a maintenance person to hold. The holding rod 850 is provided. Note that the gripping rod 850 can be attached to a vehicle or the like.

  In the ground maintenance instrument 800 described in Patent Document 1, the maintenance staff pulls the gripping rod 850 on the ground, so that the scooping plate 820 scrapes the soil on the surface of the ground, and the scraped soil is on the mesh plate 810. It is accumulated in. Although the shaved soil may contain pebbles, these pebbles stay on the mesh plate 810, and the soil and sand pass through the mesh plate 810 and are returned to the ground surface. The soil or sand returned to the ground surface is leveled by the brush roller 840.

  In Patent Document 1, a brush roller can also be provided on the front side of the scooping plate 820, and the rear side of the mesh plate 810 is not a brush roller but a roller that can press the ground (equalizing). The roller plate 820 can be provided, and the scooping plate 820 can be a large number of thin bar-shaped scooping rods.

  FIG. 10 is a diagram for explaining a gland maintenance tool 900 described in Patent Document 2. In FIG. In addition, FIG. 10 is the figure which looked at the ground maintenance instrument 900 described in patent document 2 from the back surface (surface on the side which touches a ground).

  As shown in FIG. 10, the ground maintenance tool 900 described in Patent Document 2 has a frame body 910 whose outer shape is rectangular, and the frame plate 910 is provided with a plurality of beams 920. Yes. A large number of protrusions 930 are provided on the back surface of the beam 920. The ground maintenance tool 900 configured as described above is pulled by the vehicle (not shown) and drawn around the ground, so that the protrusion 930 causes the ground soil to be scraped, and the scraped soil is lifted by the beam 920. It is to go even.

  In addition, it is described in the said patent document 2 that the ground maintenance instrument 900 described in the patent document 2 has a weight of 200 kg. For this reason, it is considered that the ground maintenance tool 900 described in Patent Document 2 is assumed to be pulled by a vehicle or the like instead of human power.

Japanese Patent No. 3668384 JP 2003-105714 A

  Although the ground maintenance device 800 described in Patent Document 1 is described that it can be pulled by a vehicle or the like, mainly, it is assumed that the ground maintenance device is routed by human power. The ground maintenance device 800 described in Patent Document 1 is considered to have a weight that can be drawn by human power. For this reason, it is thought that the ground maintenance instrument 800 described in Patent Document 1 is relatively suitable for maintenance of a soft ground.

  However, depending on the ground, the soil may be too hard, and the ground maintenance instrument 800 described in Patent Document 1 may not be able to cope with the ground where the soil is too hard. That is, if the weight is such that it can be drawn by human power, the ground cannot be scratched by the scooping plate 820 in the ground where the soil is too hard, and the surface of the ground is simply boiled. It may end up. Even if the ground soil that has become too hard can be scraped up, the ground maintenance device 800 described in Patent Document 1 has a scooping plate 820 when the ground maintenance device 800 advances forward. Will scrape the soil so as to pierce the soil obliquely in the traveling direction, and a large load is applied to the scooping plate 820. For this reason, the scooping plate 820 is liable to be bent or the like, and there is a problem in terms of durability.

  On the other hand, since the ground maintenance device 900 described in Patent Document 2 has a weight (self-weight) of 200 kg as heavy as the ground maintenance device 900, even if the ground is too hard, the protrusion 930 bites into the soil. It is thought that the soil can be stirred up. However, since the ground maintenance tool 900 described in Patent Document 2 is heavy, it is not easy to store it in a storage place such as a warehouse or take it out of the storage place, and a vehicle such as a truck. It is not easy to put on or take off from the loading platform. Thus, the ground maintenance tool 900 described in Patent Document 2 has a problem in not being easy to carry but easy to handle.

  The present invention has been made in view of the above circumstances, and can surely scratch the ground even when the ground is too hard, and the weight (self-weight) of the ground maintenance tool itself is so heavy. It is an object of the present invention to provide a ground maintenance device that is easy to carry and easy to handle.

  [1] The ground maintenance device of the present invention has an opening at the top, a bottom at the bottom, and a space in which a weight can be stored. A steel maintenance tool main body that forms a box shape with the side in the left-right direction when it is long, and the surface of the maintenance tool body facing the traveling direction is the front surface, and the surface opposite to the front surface is the rear surface. An iron base plate attached along the long side of the maintenance tool main body to the bottom surface side of the rear surface, and a plurality of iron scraping teeth fixed to the base plate by welding and scratching the soil Each of the plurality of scraped teeth has a sawtooth-like arrangement in which a portion protruding downward from the base plate has a triangular shape. Characterized in that it is fixed by welding to the base plate along the long side.

  In the ground maintenance tool of the present invention, the maintenance tool body has a box shape in which a space capable of storing the weight is formed. Therefore, when performing maintenance, the weight is appropriately stored in the maintenance tool body. And can be used in a state of weight necessary for maintenance. Further, each of the raised teeth is fixed to the base plate by welding along the long side of the maintenance tool main body in a saw-tooth arrangement in which a portion protruding downward from the base plate forms a triangular shape. Therefore, according to the ground maintenance tool of the present invention, by pulling the maintenance tool body with a weight necessary for maintenance by a vehicle or the like, even if the ground is too hard, each scratch is caused. Soil can be surely agitated by teeth.

  Further, according to the ground maintenance tool of the present invention, the maintenance tool body has a box shape in which a space capable of storing the weight is formed. The weight of the device itself (self-weight) does not increase that much. For this reason, the ground maintenance tool of the present invention is easy to store the ground maintenance tool in a storage place such as a warehouse, or to take it out of the storage place. It is easy to unload from the loading platform. Thus, the ground maintenance tool of the present invention can be a ground maintenance tool that is easy to carry and handle.

  [2] In the ground maintenance device of the present invention, it is preferable that each of the raised teeth is made of SN490C standard steel material.

  Thus, since the steel material of SN490C standard is used as the scraped teeth, the scraped teeth have excellent durability, and the ground maintenance device of the present invention has excellent durability. . That is, the SN490C standard steel material is said to be a steel material having a higher tensile stress and excellent weldability than a general steel material (for example, a SS400 standard steel material). For this reason, since the steel material of SN490C standard is used as the scraped teeth, the scraped teeth have excellent durability. The scraped teeth preferably have a SN490C standard thickness of 9 mm.

  [3] In the ground maintenance tool of the present invention, it is preferable that each of the raised teeth has a rhombus shape.

  As described above, each of the raised teeth has a rhombus shape, so that the raised teeth are arranged on the base plate so that the corners of the raised teeth protrude downward (toward the ground). When welded to the base plate, each of the scraped teeth arranged on the base plate has a serrated arrangement. In addition, since the scraped teeth have a rhombus shape, the welding work when welding the scraped teeth to the base plate is facilitated. That is, if the scraped teeth have a rhombus shape, a large space is formed between the adjacent scraped teeth and the sides to be welded, which facilitates the welding operation.

  [4] In the ground maintenance tool of the present invention, it is preferable that the scratching mechanism is attached to the rear surface of the maintenance tool body with a bolt and a nut.

  In this way, the rake mechanism is attached to the maintenance tool main body with bolts and nuts, so that if the rake teeth need to be replaced, the rake mechanism can be replaced for each rake mechanism. is there. As a result, the ground maintenance device of the present invention can be used for a long period of time, and even if the scraped teeth are deteriorated or damaged, it is not necessary to replace the entire ground maintenance device. It becomes an economical ground maintenance tool.

  [5] In the ground maintenance tool of the present invention, the bolt penetrates the scraped teeth, the base plate, and the rear surface of the maintenance tool main body from the surface side of the scratched teeth, so that the maintenance is performed. It is preferable that the nut is fixed on the inner wall surface on the rear surface side of the instrument body by the nut.

  In this way, the bolt passes through each of the raised teeth, the base plate, and the rear surface of the maintenance tool body, and is fixed by the nut on the inner wall surface on the rear surface side of the maintenance tool body. In addition to the joining by welding, since it is joined to the base plate by bolts, the joining with the base plate becomes stronger.

  [6] In the ground maintenance tool of the present invention, the maintenance tool body is preferably provided with a partition plate for partitioning the space inside the maintenance tool body.

  By providing such a partition plate, it is possible to prevent the weight stored in the maintenance tool body from moving unnecessarily in the maintenance tool body due to the presence of the partition plate, and the maintenance tool body when the weight is stored. The weight balance can be maintained appropriately.

  [7] In the ground maintenance tool of the present invention, when the bottom surface of the maintenance tool body is placed on the ground so that the front and rear surfaces of the maintenance tool body are perpendicular to the surface of the ground, the ground It is preferable that the angle formed with the surface is set in the range of 10 to 30 degrees.

  Since the bottom surface of the maintenance tool body has such an inclined surface, the maintenance tool body advances due to the resistance of the scraped teeth when the scraped teeth perform the action of scratching the soil. Even if the maintenance tool body is tilted to some extent, a space is formed between the bottom surface of the maintenance tool body and the horizontal plane (the surface of the ground) unless the maintenance tool body is tilted so much in the traveling direction. As described above, the maintenance tool main body advances in a state in which a space is formed between the bottom surface of the maintenance tool main body and the surface of the ground, so that the soil can be smoothly scraped and scraped. Soil is less likely to accumulate between the bottom surface of the maintenance tool body and the ground surface, and the soil can be efficiently scraped.

  [8] In the ground maintenance tool of the present invention, the front surface of the maintenance tool body is provided with a front-side wire attachment portion capable of attaching a wire when the maintenance tool body is pulled by a vehicle. Is preferred.

  By providing such a front-side wire attachment portion, the ground maintenance tool of the present invention can be pulled by the vehicle.

  [9] In the ground maintenance instrument of the present invention, the rear surface of the maintenance instrument main body is provided with a rear surface side wire attachment portion capable of attaching a wire when the maintenance instrument main body pulls the auxiliary maintenance instrument. Preferably it is.

  By providing such a rear surface side wire attachment portion, the ground maintenance tool of the present invention can pull the auxiliary maintenance tool.

  [10] In the ground maintenance instrument of the present invention, the auxiliary maintenance instrument is a pebble collecting instrument for collecting pebbles mixed in the soil that has been scraped by the scraped teeth, and the pebble collecting instrument is The cross section when viewed in the direction along the surface of the ground is perpendicular to the traveling direction when the ground is maintained, and the length of the side in the left-right direction is the long side of the maintenance tool body. An iron L-shaped plate having substantially the same length, a vertical plate that forms the L-shape of the L-shaped plate, and a horizontal plate of the vertical plate along the left and right sides. It is preferable to have a net for collecting pebbles that is attached and prevents passage of the pebbles and allows passage of the soil.

  By carrying out ground maintenance while towing such a pebble collecting device, not only the soil on the surface of the ground is scratched, but also the scraped soil can be leveled and the pebbles are dug up by scratching. In this case, the excavated pebbles are deposited on the pebbles collection net of the pebbles collection device. For this reason, by performing the ground maintenance while pulling the pebble collecting device, the ground soil is moderately loosened and leveled, and pebbles and the like are removed.

  [11] In the ground maintenance tool of the present invention, the wire for pulling the auxiliary maintenance tool is provided with a wire length adjuster for adjusting the distance between the maintenance tool body and the pebble collecting tool. It is preferable that

  By providing such a wire length adjuster, it is possible to adjust the adjustment of the length of the wire (the distance between the maintenance tool body and the pebble collecting tool), and thereby, The tilt angle toward the rear side can be adjusted to be an appropriate tilt angle. In addition, the adjustment of the length of the wire by the wire length adjuster is performed in the process of performing the work, whether or not the leveling is properly performed (leveling) and the pebbles are properly collected. It is preferable to carry out appropriately while observing whether or not (pebbles collection condition).

It is a figure shown in order to demonstrate the ground maintenance tool 10A which concerns on Embodiment 1. FIG. It is a figure which shows the case where the ground maintenance instrument 10A shown in FIG. 1 is seen from a side surface and a plane. It is a figure which expands and shows the principal part of FIG.1 and FIG.2. It is a figure which shows a mode that the ground maintenance is performed using the ground maintenance tool 10A which concerns on Embodiment 1. FIG. It is a figure which expands and shows the principal part of FIG. It is a figure shown in order to demonstrate the ground maintenance instrument 10B which concerns on Embodiment 2. FIG. It is a figure which shows a mode that the ground maintenance is performed using the ground maintenance tool 10B which concerns on Embodiment 2. FIG. It is a figure which expands and shows the principal part of FIG. It is a figure shown in order to demonstrate the ground maintenance instrument 800 described in patent document 1. FIG. It is a figure shown in order to demonstrate the ground maintenance instrument 900 described in patent document 2. FIG.

  Hereinafter, embodiments of the present invention will be described.

[Embodiment 1]
FIG. 1 is a view for explaining a ground maintenance tool 10A according to the first embodiment.
FIG. 2 is a diagram illustrating a case where the ground maintenance device 10 </ b> A illustrated in FIG. 1 is viewed from a side surface and a plane. 2A is a side view showing the case where the side surface side is viewed along the y axis, and FIG. 2B is a plan view showing the case where the upper opening surface side is viewed along the z axis. is there.
FIG. 3 is an enlarged view showing a main part (the scratching mechanism part 200 and a part of the periphery thereof) of FIGS. 1 and 2. FIG. 3A is a diagram illustrating a case where the side surface side is viewed along the arrow y, and FIG. 3B is a diagram illustrating a case where the rear surface side is viewed along the arrow x.

  A ground maintenance device 10A according to the first embodiment will be described with reference to FIGS. As shown in FIG. 1, the ground maintenance device 10A according to the first embodiment has a traveling direction (in the direction of the arrow x ′ along the x axis) when the ground is maintained using the ground maintenance device 10A according to the first embodiment. And the maintenance direction of the maintenance tool main body 100, which is a box-shaped iron maintenance tool main body 100 in which the side 111 (along the y-axis) becomes a long side. And a scraping mechanism 200 provided at the lower end of a surface (referred to as the rear surface) 110b opposite to the facing surface (referred to as the front surface) 110a.

  The front surface 110a of the maintenance device main body 100 is provided with a front-side wire attachment portion 120 (see FIG. 2) for attaching a pulling wire when the vehicle pulls the ground maintenance device 10A according to the first embodiment. On the side surfaces 110c and 110d of the maintenance device main body 100, there are carrying handles 130 for carrying the ground maintenance device 10A according to the first embodiment on a vehicle (such as a light four-wheel truck) by hand or carrying it manually. Is provided. The rear surface 110b of the maintenance device main body 100 is provided with a rear surface side wire attachment portion 140 for attaching a wire when pulling an auxiliary maintenance device (described later).

  The maintenance tool main body 100 has an opening at the top. In addition, the lower part of the maintenance instrument main body 100 has a bottom surface 110e, and the bottom surface 110e is an inclined surface that descends from the front surface 110a side to the rear surface 110b side, and has a weight (weight) inside. ) Can be stored.

  In addition, an iron partition plate 150 is provided in a space formed inside the maintenance tool main body 100. In the ground maintenance tool 10A according to the first embodiment, three partition plates 150 are provided at equal intervals. For this reason, the space part of the maintenance tool main body 100 is divided | segmented into four in the ground maintenance tool 10A which concerns on Embodiment 1, and four rooms R1-R4 are formed. These four rooms R1 to R4 can be used to store weights (construction weights, sand bags, etc.). Hereinafter, the four rooms R1 to R4 may be referred to as weight storage rooms R1 to R4.

  By providing such a partition plate 150, when the weight is stored in the weight storage chambers R1 to R4, it is possible to prevent the weight from moving unnecessarily in the maintenance tool main body 100, and maintenance when the weight is stored. The balance of the weight of the instrument body 100 can be appropriately maintained.

  The maintenance tool main body 100 configured as described above uses a steel material of “SS400 standard”, and the steel material having a thickness t1 of 4.5 mm is used. In addition, the dimensions of each part of the maintenance tool main body 100 are such that the length L1 of the side 111 (also referred to as the long side 111) orthogonal to the traveling direction is about 1800 mm, the height H1 of the front surface 110a is about 200 mm, and the height of the rear surface 110b. H2 is about 280 mm, and the width W1 between the front surface 110a and the rear surface 110b is about 300 mm.

In addition, the inclination angle θ1 of the bottom surface 110e (represented by the inclination angle with respect to the surface of the ground G (see FIGS. 4 and 5)) is the front surface 110a and the rear surface 110b of the maintenance instrument main body 100. When placed on the ground so as to be perpendicular to the angle, the angle formed with the surface of the ground is set to 15 degrees. If the inclination angle θ1 of the bottom surface 110e is 15 degrees, the angle formed by the rear surface 110b and the bottom surface 110e (referred to as θ2) is θ2 = 75 degrees.
These dimensions are not limited to the values described above, and can be changed as appropriate. However, the inclination angle θ1 of the bottom surface 110e is preferably within a range of 10 degrees to 30 degrees.

  Further, the front side wire attaching portion 120, the carrying handle 130, the rear side wire attaching portion 140 and the partition plate 150 are made of steel materials of “SS400 standard”, respectively, like the maintenance instrument main body 100. The wire attachment part 120, the carrying handle 130, the rear surface side wire attachment part 140, and the partition plate 150 are attached to the maintenance tool main body 100 by welding. The plate thickness t2 of the partition plate 150 is 4.5 mm as in the maintenance tool main body 100.

  Next, the scratching mechanism unit 200 will be described. As shown in FIGS. 1 to 3, the scraping mechanism 200 includes a base plate 210 having the same length as the long side 111 of the maintenance tool main body 100 and a plurality of scraping teeth 220 for scratching the soil. Have. Note that the base plate 210 is made of SS400 standard steel as in the case of the maintenance tool main body 100, but has a plate thickness t3 of 9 mm.

  Further, each of the raised teeth 220 of the plurality of raised teeth 220 is made of “SN490C standard” steel material having a tensile stress higher than that of the SS400 standard, and has a thickness t4 of about 9 mm. . The SN490C standard steel is not only high in tensile stress but also excellent in weldability compared to the SS400 standard steel.

  Each scraping tooth 220 is welded to the base plate 210 along the long side 111 of the maintenance tool main body 100 in a sawtooth-like arrangement in which the end on the side contacting the ground G (see FIGS. 4 and 5) forms a triangle. It is fixed. Specifically, each of the scraped teeth 220 has a rhombus shape, and is joined to the base plate 210 by welding so that one corner of the rhombus protrudes downward (a direction toward the ground G). In FIG. 3, a portion C painted in gray is a welded portion. In the following description, “each” of “raised tooth 220” may be omitted and expressed as “raised tooth 220”.

  In this way, each of the scraping teeth 220 is welded to the base plate 210 so as to have a rhombus shape and one corner of the rhombus protrudes downward (a direction toward the ground G). The toothed teeth 220 have a sawtooth arrangement in which a portion protruding downward from the base plate 210 forms a triangular shape. Further, since the scraped teeth 220 have a rhombus shape, the welding operation when welding the scraped teeth 220 to the base plate 210 is facilitated. That is, if the scraped teeth 220 have a rhombus shape, the adjacent scraped teeth 220 have a large gap between the respective welding target sides (for example, the side corresponding to the portion C painted in gray in FIG. 3B). Since the space is formed, the welding operation is facilitated.

  In the ground maintenance device 10A according to the first embodiment, the scraped teeth 220 have lengths D1 and D2 between diagonals of about 110 mm, respectively. For this reason, in the ground maintenance tool 10A according to the first embodiment, the scraped teeth 220 are square. The scraping teeth 220 are attached to the base plate 210 so that a length D3 (D3≈50 mm) slightly shorter than ½ of the length between the diagonals protrudes downward from the base plate 210. Yes.

  As described above, the scraped teeth 220 using a steel material called the SN490C standard are joined to the base plate 210 by welding, and thus have higher strength due to hardening by welding. For this reason, it is excellent in durability against a ground whose soil has become too hard, and can withstand long-term use. Incidentally, the steel plate of SN490C standard is used for the base plate 210, and the strength is higher than that in which the teeth 220 are formed by scratching the base plate 210 itself, and the durability is further improved.

  By the way, the scraping mechanism 200 including the base plate 210 and the scraping teeth 220 is attached to the maintenance instrument main body 100 by bolts 230 and nuts 240. In the ground maintenance device 10A according to the first embodiment, as shown in FIG. 3, the bolt 230 passes through each of the scraped teeth 220, the base plate 210, and the rear surface 110b of the maintenance device body 100, and It is fixed by a nut 240 on the inner wall surface on the rear surface 110b side (see FIG. 3). As a result, each of the scraped teeth 220 is not only joined to the base plate 210 by welding, but is also joined to the base plate 210 by the bolt 230, so that the joint with the base plate 210 becomes stronger.

  The weight of the ground maintenance tool 10A according to the first embodiment configured as described above (the weight of the maintenance tool main body 100 and the scratching mechanism 200 combined) is about 50 kg. For this reason, the ground maintenance instrument 10A according to the first embodiment can be easily carried by the two adults having the carrying handle 130, respectively. For this reason, the ground maintenance tool 10A according to the first embodiment is easy to store the ground maintenance tool 10A in a storage place such as a warehouse or take it out of the storage place. It is easy to put on or take off from the loading platform. Thus, the ground maintenance tool of the present invention can be a ground maintenance tool that is easy to carry and handle.

  FIG. 4 is a diagram illustrating a state in which ground maintenance is performed using the ground maintenance tool 10A according to the first embodiment. As shown in FIG. 4, the ground maintenance device 10 </ b> A according to the first embodiment ties one end side of the wire 160 to the front surface side wire attachment portion 120 provided on the front surface 110 a of the maintenance device body 100, and The other end side is used in a state of being connected to a hook 510 or the like of a loading platform of a vehicle (a light four-wheel truck) 500. At this time, the weights are appropriately stored in the weight storage chambers R1 to R4 of the maintenance tool main body 100 according to the hardness of the ground soil. In FIG. 4, the weight is not shown.

  For example, as a weight, a work weight having a weight of about 10 kg is accommodated as a weight (work weight) by storing several weights in four weight storage chambers R1 to R4 as evenly as possible. The total weight with the instrument main body 100 can be about 200 kg. Of course, if the number of weights is increased, the total weight of the weight and the maintenance tool main body 100 can be increased. Various types of construction weights are known. For example, concrete weights or iron weights for supporting the legs of the fences and signs so that the fences and signs do not fall down. One.

  As described above, the light four-wheel truck 500 is caused to travel in a state where the weights are appropriately stored in the weight storage chambers R1 to R4 of the maintenance tool main body 100 according to the hardness of the ground soil. The ground maintenance device 10 </ b> A according to the above is pulled by the light four-wheel truck 500 and proceeds with the light four-wheel truck 500. At this time, weights are stored in the respective weight storage chambers R1 to R4 of the maintenance tool main body 100, and the total weight of the weight and the maintenance tool main body 100 is, for example, about 200 kg. For this reason, the ground maintenance device 10A according to the first embodiment proceeds in the direction of the arrow x ′ together with the light four-wheel truck 500 in a state where the scraped teeth 220 of the scraping mechanism section 200 have digged into the ground of the ground G. .

  FIG. 5 is an enlarged view showing a main part (a part of the ground maintenance instrument 10A) of FIG. As shown in FIG. 5, when the maintenance tool main body 100 of the ground maintenance tool 10A according to the first embodiment travels in the direction of the arrow x ′ together with the light four-wheel truck 500, the scraping teeth 220 of the scratching mechanism 200 are connected to the ground G. In the state of being bitten into the soil, it proceeds in the direction of the arrow x ′. As a result, the ground of the ground G is scraped by the scraped teeth 220.

  When the ground maintenance tool 10A according to the first embodiment travels with the light four-wheel truck 500, the front 110a and the rear surface 110b of the maintenance tool main body 100 are wired so that they are substantially perpendicular to the surface of the ground G. It is preferable to adjust the length of 160 and the mounting height of the wire 160 in the vehicle.

  By doing so, the scraped teeth 220 of the scraping mechanism 200 are bitten in a direction substantially perpendicular to the surface of the ground G, and the surface of the ground G on the bottom surface 110e (xy) of the maintenance tool main body 100 (xy). The inclination angle θ1 with respect to the plane is an inclined surface having a predetermined angle (about 15 degrees in this case). In this state, when the maintenance tool main body 100 travels with the light four-wheel truck 500, the maintenance tool main body 100 is in a state where a space is formed between the bottom surface 110e of the maintenance tool main body 100 and the main surface of the ground G. Progresses.

  That is, when the scraping teeth 220 perform the action of scraping the soil, even if the scraping teeth 220 are subjected to the resistance of the soil and the maintenance tool body 100 is tilted to some extent in the traveling direction, Since the bottom surface 110e is an inclined surface, the space formed between the bottom surface 110e of the maintenance device main body 100 and the surface of the ground G is maintained unless the maintenance device main body 100 is significantly inclined in the traveling direction. The Rukoto.

  In this way, when the maintenance tool body 100 advances in a state where the space formed between the bottom surface 110e of the maintenance tool body 100 and the surface of the ground G is maintained, the soil can be scraped smoothly. In addition, it has been experimentally found that the soil that has been scraped is less likely to accumulate between the bottom surface 110e of the maintenance tool body 100 and the surface of the ground G, and the soil can be efficiently scraped.

  By performing such an operation on the entire ground or the desired range where the soil is too hard, the entire ground or the desired range becomes a state in which the soil on the ground surface is agitated, If the ground becomes too hard, the soil is moderately loosened.

  In addition, after the soil is agitated by the ground maintenance device 10A according to the first embodiment, the soil is leveled using a ground maintenance roller or the like prepared separately from the ground maintenance device 10A, if necessary. You may make it. Further, any auxiliary maintenance tool (equipment that can be connected to the maintenance instrument main body 100 and can be leveled) is attached to the rear surface side wire attaching portion 140 provided on the rear surface 110b of the maintenance instrument main body 100 in the ground maintenance instrument 10A. Etc.) may be performed in a state where they are connected. Thereby, the operation | movement which the soil of the ground G surface scratches, and the operation | movement equalizing can be performed at once.

  As described above, according to the ground maintenance tool 10A according to the first embodiment, the maintenance tool body 100 has a box shape with an opening at the top, and accordingly, depending on the hardness of the ground, A weight can be accommodated and it can respond to grounds of various hardness.

  Further, according to the ground maintenance instrument 10A according to the first embodiment, the scratching mechanism unit 200 includes the base plate 210 and the scraped teeth 220, and the scraped teeth 220 have a higher tensile stress than the steel material of the SS400 standard. “SN490C standard” steel is used, and is joined to the base plate 210 by welding. For this reason, the scraped teeth 220 are hardened by welding and have higher strength. For this reason, the soil can be surely scraped against the ground where the soil is too hard, and it has excellent durability and can withstand long-term use.

  Further, according to the ground maintenance device 10A according to the first embodiment, the inclination angle θ1 of the bottom surface 110e of the maintenance device main body 100 (inclination angle θ1 with respect to the surface of the ground G) is about 15 degrees. The ground maintenance device 10 </ b> A travels together with the light four-wheel truck 500 in a state in which the scraped teeth 220 have bitten in a direction substantially perpendicular to the ground surface. Thus, the soil can be smoothly scraped, and the scraped soil is less likely to accumulate between the bottom surface 110e of the maintenance tool main body 100 and the surface of the ground G, and the soil can be efficiently scraped.

  Further, according to the ground maintenance tool 10A according to the first embodiment, the total weight of the maintenance tool main body 100 and the scratching mechanism portion 200 (weight without a weight) is about 50 kg. Such a ground maintenance device 10A can be easily carried by having two adults each having a carrying handle 130. For this reason, the ground maintenance tool 10A according to the first embodiment is easy to store the ground maintenance tool 10A in a storage place such as a warehouse or take it out of the storage place. It is easy to put on or take off from the loading platform. Thus, the ground maintenance tool 10A according to the first embodiment can be a ground maintenance tool that is easy to carry and easy to handle.

  Further, according to the ground maintenance device 10 </ b> A according to the first embodiment, the scraping mechanism portion 200 including the base plate 210 and the scraping teeth 220 is attached to the maintenance device main body 100 by the bolt 230 and the nut 240. For this reason, when the use frequency of the ground maintenance tool 10A according to the first embodiment is high, and it is necessary to replace the scraped teeth 220 due to severe use, it is possible to replace the scraping mechanism 200 for each. is there. As a result, the ground maintenance device 10A according to the first embodiment can be used for a long period of time, and even if the scraped teeth 220 are deteriorated or damaged, the entire ground maintenance device 10A is replaced by a new one. Since it is not necessary, it becomes an economical ground maintenance tool.

[Embodiment 2]
FIG. 6 is a view for explaining the ground maintenance tool 10B according to the second embodiment. The ground maintenance device 10B according to the second embodiment is different from the ground maintenance device 10A according to the first embodiment in that it assists the pebble collecting device 300 for efficiently collecting pebbles and the like that come out when the soil is scratched. It is a point provided as a maintenance tool. In addition, since the structure of the maintenance instrument main body 100 and the raising mechanism part 200 is fundamentally the same as that of the ground maintenance instrument 10A which concerns on Embodiment 1, description is abbreviate | omitted.

  As shown in FIG. 6, the pebble collecting device 300 is a cross section when viewed in a direction perpendicular to the traveling direction (arrow x ′ direction) and along the surface of the ground G (see FIG. 7), that is, y. It has an iron L-shaped plate 310 whose section when viewed along the axis is L-shaped, and a pebble collecting net plate 320 attached to the L-shaped plate 310.

  The L-shaped plate 310 is formed by bending an SS400-standard steel material (plate thickness t5 is 6 mm) into an L-shape, like the maintenance tool body 100, and extends in a direction along the z-axis. It consists of a vertical plate 311 and a horizontal plate 312 extending in the direction along the x-axis. The length L4 in the vertical direction (z-axis direction) of the vertical plate 311 and the length L5 in the horizontal direction (x-axis direction) of the horizontal plate 312 in the L-shaped plate 310 are respectively set. 75 mm. Further, the length in the left-right direction (the length in the direction along the y-axis) L6 of the L-shaped plate 310 is substantially the same as the length L1 (about 1800 mm) of the long side 111 in the maintenance tool main body 100. .

  In addition, two wires 341 and 342 are attached to the vertical plate 311 of the L-shaped plate 310 at a predetermined interval. A hook-shaped hook 351, 352 is attached to each tip of these two wires 341, 342. For this reason, the pebble collecting tool 300 can be easily connected to the maintenance tool main body 100 by hooking the hooks 351 and 352 on the rear surface side wire attachment part 140 provided on the rear surface of the maintenance tool main body 100. Further, the pebble collecting device 300 can be easily detached from the maintenance device main body 100 by removing the hooks 351 and 352.

  In addition, in the middle part of each of the wires 341 and 342, in order to be able to adjust the space | interval of the maintenance instrument main body 100 and the pebble collection instrument 300, the wire length adjustment part (for example, the length of the wire 160 can be adjusted) , Turnbuckles) 361, 362 are provided.

  As the pebble collecting net plate 320, an iron net plate called expanded metal can be preferably used. In this expanded metal, each mesh has a diamond shape and is commercially available as a construction material. There are various mesh roughnesses, but it is preferable that the pebbles can be collected efficiently and the soil can be returned to the ground G through the individual meshes. In consideration of this point, the ground maintenance instrument 10B according to the second embodiment uses an expanded metal of XS31 standard. The expanded metal of the XS31 standard has a diagonal length a1 of about 30 mm and a diagonal length a2 of about 12 mm in each mesh forming a rhombus (inside the broken line frame 320a in FIG. 6). See).

  Such a pebble collecting net plate (expanded metal) 320 is fixed to the vertical plate 311 of the L-shaped plate 310 by welding. The length L7 along the y-axis of the pebble collecting net 320 is the same as the length L6 of the L-shaped plate 310 in the direction along the y-axis. Further, the protruding length (height) H3 along the z-axis of the pebble collecting net plate 320 is 175 mm in the ground maintenance tool according to the second embodiment. Note that the length L7 along the y-axis and the protruding length (height) H3 along the z-axis of the pebble collecting net plate 320 are not limited to these values.

  FIG. 7 is a diagram illustrating a state in which ground maintenance is performed using the ground maintenance tool 10B according to the second embodiment. As shown in FIG. 7, the ground maintenance tool 10 </ b> B according to the second embodiment is in a state where the maintenance tool main body 100 pulls the pebble collecting tool 300. In order to achieve such a state, the hooks 351 and 352 of the wires 341 and 342 connected to the pebble collecting device 300 are hooked on the rear surface side wire attaching portion 140 provided on the rear surface 110b of the maintenance device main body 100. Good.

  Then, the maintenance tool main body 100 is connected to the loading platform of the light four-wheel truck 500 by a wire 160. At this time, similarly to the ground maintenance tool 10A according to the first embodiment, the weights are appropriately stored in the weight storage chambers R1 to R4 of the maintenance tool body 100 according to the hardness of the ground soil. In this state, by running the light four-wheel truck 500, the ground maintenance device 10 </ b> B advances while being pulled by the light four-wheel truck 500.

  FIG. 8 is an enlarged view of a main part (a part of the ground maintenance instrument 10B) of FIG. As shown in FIG. 8, when the ground maintenance device 10 </ b> B according to the second embodiment is pulled by the light four-wheel truck 500 (see FIG. 7) and travels in the direction of the arrow x ′, the scraped teeth 220 of the scraping mechanism 200. Will proceed in the direction of the arrow x ′ in a state where it has digged into the ground of the ground G. For this reason, the ground of the ground G is scraped by the scraped teeth 220.

  Further, in the ground maintenance tool 10B according to the second embodiment, the pebble collecting tool 300 follows the progress of the maintenance tool main body 100 since the pebble collecting tool 300 is connected to the maintenance tool main body 100. At this time, the pebble collecting device 300 is arranged so that the pebble collecting net plate 320 is inclined with a predetermined inclination angle θ3 on the rear side with respect to the normal V to the ground G as shown in FIG. It is preferable to adjust the length of the wire 341. The “inclination angle θ3” is preferably about 30 to 80 degrees.

  The length of the wires 341 and 342 for connecting the pebble collecting tool 300 to the maintenance tool main body 100 (interval between the maintenance tool main body 100 and the pebble collecting tool 300) is adjusted by a wire length adjuster (turn buckle). 361, 362 can be easily performed. In addition, adjustment of the length (interval of the maintenance tool main body 100 and the pebble collecting tool 300) of the wires 341 and 342 is performed in the process of performing work, and whether or not leveling is appropriately performed (the degree of smoothing). ) And whether or not pebbles are collected appropriately (pebbles collection condition) is preferably performed appropriately.

  Thus, when the ground maintenance device 10B according to the second embodiment is pulled by the light four-wheel truck 500 (see FIG. 7) and proceeds in the direction of the arrow x ′, the soil scraped by the scraping teeth 220 is The L-shaped plate 310 of the pebble collecting device 300 is leveled while being gathered together. In addition, the part shown by the arrow A in FIG. 8 shows a mode that the soil is gathered together.

  Further, when the ground maintenance device 10B according to the second embodiment is pulled by the light four-wheel truck 500 (see FIG. 7) and travels in the direction of the arrow x ′, pebbles S and the like are mixed with the soil that has been agitated. Then, the pebbles S are bounced up by the L-shaped plate 310 in the pebbles collection device 300 and are deposited on the pebbles collection net plate (expanded metal) 320. Part of the soil is also bounced up and deposited on the pebble collecting net 320, but the accumulated soil passes through the mesh of the pebble collecting net 320 and returns to the ground G. When a certain amount of pebbles accumulated on the pebbles collection net 320 is accumulated, the pebbles may be removed from the pebbles collection net 320.

  The work shown in FIGS. 7 and 8 is performed on the entire ground or the desired range where the soil has become too hard, so that the entire ground or the desired range is the soil on the surface of the ground G. As a result, the pebbles digged up by the rake are accumulated on the pebbles collecting net 320. For this reason, the ground G after the ground maintenance device 10B according to the second embodiment passes is in a state where the soil is moderately loosened and leveled, and is a comfortable ground from which pebbles and the like are removed.

  In the ground maintenance instrument 10B according to the second embodiment, as in the case of the ground maintenance instrument 10A according to the first embodiment, when the maintenance instrument main body 100 travels with the light four-wheel truck 500, the front surface of the maintenance instrument main body 100 is used. It is preferable to adjust the length of the wire 160 so that the 110a and the rear surface 110b are substantially perpendicular to the surface of the ground G.

  According to the ground maintenance tool 10B according to the second embodiment, the same effect as that obtained with the ground maintenance tool 10A according to the first embodiment can be obtained. In the ground maintenance tool 10B according to the second embodiment, the pebble collecting tool is used. The effect of performing ground maintenance while pulling 300 is obtained. That is, according to the ground maintenance tool 10B according to the second embodiment, the soil on the surface of the ground is scraped and leveled, and the pebbles and the like dug up by scratching are the pebbles collecting tool. Goes piled up on a pebbles collection net. For this reason, by carrying out the ground maintenance while towing the pebbles collecting device, the soil is moderately loosened and leveled, and a comfortable ground from which pebbles are removed can be obtained. Is obtained.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the following modifications are possible.

  (1) The numerical values indicating the dimensions and the like of the respective parts shown in the above embodiments are merely examples, and are not limited to such numerical values, and have a size suitable for the size of the ground to be maintained. It can also be a ground maintenance device.

  (2) In each of the above embodiments, the scraped teeth 220 are rhombuses (squares) having the same length between the diagonals, but need not be squares, and may be rhombuses having different lengths between the diagonals. Good.

(3) In each of the above embodiments, the maintenance tool body is exemplified by the case where a weight for construction is used as the weight, but a sand bag may be used instead of the weight for construction. The weight for use may be used in combination. When sand bags are used, depending on the size of the sand bags, they may not be stored in the weight storage chambers R1 to R4. In this case, the sand bags are placed over the partition plates 150. May be. The weight is not limited to construction weights and sand bags, and various weights can be used as long as they are heavy and can be placed on the maintenance tool main body 100.
Further, the partition plate 150 may be detachable. As described above, by making the partition plate 150 detachable, it is possible to form a space having a size corresponding to the size of the weight, the type of the weight, and the like.

  10A, 10B ... Ground maintenance device, 100 ... Maintenance device main body, 110a ... front, 110b ... rear surface, 110c, 110d ... side, 111 ... long side, 120 ... front side Wire attaching part, 130 ... Transport handle, 140 ... Rear side wire attaching part, 150 ... Partition plate, 160, 341, 342 ... Wire, 200 ... Scratching mechanism part, 210 ..Base plate, 220 ... Raised teeth, 300 ... Pebble collecting device, 310 ... L-shaped plate, 320 ... Net plate for pebble collecting net

Claims (11)

The upper part has an opening, the lower part has a bottom surface, and a space that can store a weight is formed inside, and the side in the left-right direction when facing the traveling direction when maintaining the ground is the long side A box-shaped iron maintenance device body,
When the surface of the maintenance instrument body facing the traveling direction is a front surface and the surface opposite to the front surface is a rear surface, the rear surface is attached to the bottom surface side along the long side of the maintenance instrument body. A scraping mechanism having an iron base plate and a plurality of iron scraping teeth fixed to the base plate by welding and scratching the soil;
With
The raised teeth of the plurality of raised teeth are fixed to the base plate by welding along the long side of the maintenance tool main body in a sawtooth arrangement in which a portion protruding downward from the base plate has a triangular shape. Ground maintenance equipment, characterized by In the ground maintenance tool according to claim 1,
Each of the raised teeth is made of SN490C standard steel. In the ground maintenance tool according to claim 1 or 2,
Each of the raised teeth has a rhombus shape. In the ground maintenance instrument in any one of Claims 1-3,
The ground maintenance device, wherein the scraping mechanism portion is attached to a rear surface of the maintenance device main body by a bolt and a nut. In the ground maintenance implement of Claim 4,
The bolt passes from the side of the surface of each of the raised teeth, passes through each of the raised teeth, the base plate, and the rear surface of the maintenance tool body, and is fixed by the nut on the inner wall surface on the rear surface side of the maintenance tool body. Ground maintenance equipment characterized by being. In the ground maintenance tool in any one of Claims 1-5,
The ground maintenance tool, wherein the maintenance tool body is provided with an iron partition plate for partitioning a space inside the maintenance tool body. In the ground maintenance instrument in any one of Claims 1-6,
When the bottom surface of the maintenance tool body is placed on the ground so that the front and rear surfaces of the maintenance tool body are perpendicular to the surface of the ground, the angle formed with the surface of the ground is 10 degrees to 30 degrees. Ground maintenance equipment that is set to a range of degrees. In the ground maintenance instrument in any one of Claims 1-7,
A ground servicing device, characterized in that a front-side wire attaching portion is provided on the front surface of the servicing device main body, to which a wire can be attached when the servicing device main body is pulled by a vehicle. In the ground maintenance tool in any one of Claims 1-8,
A ground maintenance device, wherein a rear-side wire attachment portion is provided on the rear surface of the maintenance device body, to which a wire can be attached when the maintenance device body pulls the auxiliary maintenance device. In the gland maintenance device according to claim 9,
The auxiliary maintenance device is a pebble collecting device that collects pebbles mixed in the soil that has been raked by the rake teeth,
The pebble collecting device is
The cross section when viewed in the direction along the surface of the ground is perpendicular to the traveling direction when the ground is maintained, and the length of the lateral side is the long side of the maintenance tool body. An iron L-shaped plate having substantially the same length as
It is attached along the left and right sides of the longitudinal plate body among the longitudinal plate body and the lateral plate body forming the L-shape of the L-shaped plate, and prevents the passage of the pebbles, A pebble collecting net that allows the passage of soil,
A ground maintenance device characterized by comprising: The ground maintenance implement according to claim 10 ,
The ground maintenance tool is characterized in that a wire length adjuster for adjusting a distance between the maintenance tool main body and the pebble collecting tool is provided on the wire when pulling the auxiliary maintenance tool. .