JP4231487B2 - Ground vehicle wheels - Google Patents

Description

  The present invention relates to a ground vehicle wheel used for a ground vehicle represented by Danjiri.

  Many traditional Japanese festivals, such as danjiri, yam, hiyama, yamakasa and taikodai, run on wheels by being pulled by human power. Among them, ground cars represented by Danjiri are traditionally made using wood (such as zelkova) as the main material, and their wheels are also wooden (such as pine).

  The wheel is referred to as a “top” in the dangling, and as shown in FIG. 5A, a solid material 35 having a diameter capable of cutting out the top 30 having a predetermined diameter is processed into a cylindrical shape, and then required. The frame 30 is rounded and finished in a top 30 as shown in FIG. The diameter of the top 30 is, for example, 66 cm in the danji that appears in the “Danjiri Festival” in Kishiwada City, Osaka Prefecture. The solid wood 35 for cutting it out is required to have a diameter of 66 cm or more. The

  However, it has become increasingly difficult to secure a large material having a diameter exceeding 66 cm after drying. In addition, the material for large pine trees with a diameter of 66 cm or more has a tree age of 400 years or more, so even if the appearance is good material, the probability of cracking or decay in the inside increases, and it can be used as a wheel. Procurement of solid wood that can be done is becoming increasingly difficult.

  In addition, as seen in the typical example of the “Danjiri Festival” mentioned above, it is characterized by a courageous route such as a sudden change of direction called “turning around” and running at a high speed. In Danjiri, a heavy superstructure carrying a person is supported by four wooden wheels and traveled more violently, so a heavy load is applied to the wheels that do not have a steering structure. Damage is likely to occur. Therefore, it is necessary to repair or replace the wheel when it is damaged from a good quality material, but it is extremely difficult to repair the solid material. To replace it, it is necessary to obtain a material suitable for the wheel as described above. Have difficulty.

  In addition, a wheel with a material having a required diameter cut into a ring has a low load-bearing strength, and if the heavy load from the upper structure is continued during storage of the ground vehicle, the wheel is likely to be deformed. there were. For this reason, during storage other than the annual festival day, deformation occurs if the load of the superstructure exceeding 4t is supported by the wheel. I support it.

  It is desired to develop a ground vehicle wheel as an alternative from the situation where it is becoming increasingly difficult to continue to use a solid material having a large diameter as a ground vehicle wheel. The purpose is to provide wheels for ground vehicles that have solved the problem.

In order to achieve the above-mentioned object, the ground vehicle wheel according to the present invention assembles a single board having a rectangular cross section made of lumber into a combination form in a required vertical and horizontal width and applies an adhesive. In addition, by pressing and pressing together, it is formed into a laminated material, and this laminated material is cut into a wheel shape with a predetermined diameter and width to constitute the entire wheel or the main part of the wheel, and the outer peripheral surface in contact with the road surface of the wheel. The exposed surface of each veneer is a non-cutted surface.

  According to the above configuration, the veneer to be laminated and bonded is not to choose the diameter of the timber from large diameter wood to small / medium diameter wood, but to select a high strength part or a part free from cracks, decay, knots, etc. As a result, it is possible to obtain a laminated material that becomes a homogeneous wheel material by bonding them together. Therefore, it is possible to replace the solid large-diameter wood, which is easy to obtain and more difficult to obtain. In addition, the strength is higher than that of solid wood, and a homogeneous material can be stably supplied.

  In the above configuration, the side surface of the wheel can be finished to the appearance that matches the appearance of the ground vehicle by joining the side plate with a plurality of plate materials bonded to both side surfaces of the wheel main portion. It is possible to increase the coupling between the constituting single plates.

  According to the present invention, a wheel for a ground vehicle can be manufactured by using a laminated material obtained by laminating and bonding a plurality of wood single plates made of lumber. It is possible to solve the current problem that it is difficult to obtain a solid material of a diameter, and to provide a high strength ground vehicle wheel instead.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the accompanying drawings. The present embodiment shows a ground vehicle wheel applied to a dashiri piece, which is an example of a ground vehicle. As for the danjiri shown here, the structure of the wheels (frames) will be described by taking as an example a kishiwada type danjiri that is coasted at the Danjiri Festival in Kishiwada City, Osaka, as shown in FIG.

  As shown in FIG. 4, the Kishiwada type danjiri is configured in the form of “inner sesame” in which the wheels 1 are arranged on the inner side of the base 11, and the dolly main body 10 having a weight of about 4 t is formed by the four wooden wheels 1. I support it. When coasting, the two ropes of 100-200m travel by being pulled by many pullers. The load applied to the wheel 1 is the weight of the carpenter body and the lever that adds to the weight of the main body 10, and the wheel 1 is only rotatably fitted to the axle 12 that is pivotally supported by the base 11. There is no rudder function, and the direction is changed by a pulling direction by a puller or an operation by a front lever and a rear lever, so that a large deformation load is applied to the wheel 1. Therefore, although the wheel 1 is required to have high strength, since a solid material has been used as the material of the wheel 1, the wheel 1 having a diameter of 66 cm, for example, having a diameter of 66 cm, can be applied to the above-mentioned dashi. As described above, it is not easy to procure a solid material, and it is not easy to obtain a solid material having a uniform strength that can withstand a heavy load and rough handling.

  The ground vehicle wheel according to the present embodiment can provide a wheel 1 that can replace a solid wheel that can be expected to become increasingly difficult to obtain in the future. FIG. 1 shows a configuration of a ground vehicle wheel 1 according to the present embodiment, and a wheel body formed by a laminated material obtained by laminating and bonding a plurality of single plates (grinding plates) 4 made of pine wood. (Wheel main part) It is comprised by joining the side plate 3 to both surfaces of 2. As shown in FIG.

  As shown in FIG. 2, the wheel body 2 is shown in FIG. 3 from a laminated material 9 in which a plurality of single plates 4 having a rectangular cross section are laminated and bonded to required vertical and horizontal widths H and D corresponding to the diameter of the wheel body 2. The wheel body 2 is cut out. Here, the wheel main body 2 has the same thickness as a single plate and the length of the wood cutting direction 4 is cut to the width W of the wheel main body 2 so that the wood direction is parallel and the wheel main body 2 Stacked into vertical and horizontal dimensions H and D that can be cut out, coated with adhesive on the surfaces of each of the saw plates 4 that are in contact with each other, and pressed into a wheel shape as shown in FIG. ing. The ground plate 4 is made of wood by avoiding a core portion of a material having low strength and avoiding a portion free from knots, cracks, and rot, so that it is easy to collect a homogeneous material.

  As shown in FIG. 3, the wheel body 2 cut out from the laminated material 9 into a wheel shape is formed by assembling and bonding the homogeneous ground plates 4, so that the entire strength distribution becomes uniform, and the solid material is made of It is possible to make the wheel 1 having a higher strength than when it is used. The circumferential surface of the wheel main body 2 serves as a ground contact surface for running the dangling, but the ground contact surface of the wheel main body 2 is a non-top end surface because the wooden front surface of the saw plate 4 is configured to be the side surface of the wheel. ing. The reason for this configuration is that, in the trial production process, when the wheel was configured by combining the grinders 4 so that a part of the ground contact surface of the wheel became a mouth end surface, the ground contact surface of the wheel was missing. This is because there is a problem in durability. In addition, in this embodiment, although it has comprised so that the wooden end surface of all the board | plates (single board) 4 which comprises the wheel main body 2 may turn into a wheel side surface, from a viewpoint that a grounding surface should just be a non-top surface. As long as the front end of each wheel plate (single plate) 4 on the outer periphery of the wheel is a wheel side surface, each wheel plate (single plate) 4 at the wheel center is not limited to this. In addition, the end of the wood means a surface cut in a direction intersecting with the wood direction of the wood (longitudinal direction of the raw wood), and it is cut not only on the surface cut at right angles to the wood filling direction but also obliquely. Includes faces. Further, the non-muzzle surface refers to a surface (a wood surface and a wood back surface) that is not a mouth end surface, and a mesh surface and a plate surface are typical examples.

  In order to improve the appearance of the wheel 1, side plates 3 are joined to both side surfaces of the wheel body 2 as shown in FIG. 1. The side plate 3 may be joined by a single plate having a wood direction in the direction intersecting the wood direction of the wheel body 2, but a single plate having a width of 66 cm or more is expensive and difficult to obtain. Therefore, as shown in FIG. 1B, it is desirable to join the wheel body 2 with a plate material in which a plurality of plate materials having the same thickness are assembled and bonded to each other at the cross-sectional portion. The side plate 3 is joined to the wheel body 2 by bonding with an adhesive and driving the wooden wedge 6 from a plurality of locations toward the wheel body 2 from the side plate 3 side, so that the wheel body 2 and the side plate 3 are integrated. Making it more reliable. Further, the peripheral edge portion of the side plate 3 joined to the wheel body 2 is chamfered at a predetermined angle as shown in FIG. 1 (a), and the circumferential angle is such that the wheel 1 is in contact with the ground in an inclined state. The part is in contact with the ground so that chipping and cracking are unlikely to occur.

  A shaft hole 5 is bored in the center of the wheel 1 with a diameter that fits the axle 12. When the wheel 1 is pivotally supported by the axle 12, the sliding friction is large and the wear becomes intense when the wooden parts are fitted to each other. It is configured to be in sliding contact with a sliding member inserted and lubricated with the axle 12.

  In the wheel 1 configured as described above, the laminated material 9 for cutting out the wheel main body 2 is formed by collecting the saw plates 4 cut to a length corresponding to the width of the wheel main body 2. 2) can be cut into the width of the wheel body 2 to form a laminated material 9 as shown in FIG. In the structural laminated material defined by the JAS, not only the ground plate but also small-corner materials are included if the thickness is the same, and those having various lengths are laminated and bonded in the thickness, width and length directions. Although it is formed, a product that is not inferior in strength is obtained.

  Moreover, the laminated material 9 does not necessarily have to be a single plate having the same thickness, and if the single plates having different thicknesses can be brought into close contact with each other, the selection range of the single plate can be expanded. it can. In addition, each single plate to be assembled is generally sawn in the wood direction by rotary lace or slicer, so the wood direction of the single plate to be assembled is inevitably almost parallel, but depending on the sawing method Since some of them have been sawed obliquely from the grain direction, they do not necessarily need to be parallel, and there is no reduction in strength even if they are mixed.

  As described above, the laminated material 9 obtained by laminating and bonding the plurality of single plates 4 is an aggregate of materials produced by using the drying material as the single plate 4, so that the moisture content is made uniform and the low-quality material is removed. Therefore, it can be set as the material of the wheel 1 with high dimensional stability and accuracy. Further, the use of the dry veneer 4, the dispersion of the joint portions, the dispersion of the defects inherent to the material due to the lamination, and the like, there is little variation in mechanical properties, and a high strength state can be stably obtained. Furthermore, since additional treatments such as antiseptic, insecticidal, and flame retardant can be carried out in the state of the veneer 4 as compared with the solid material, the penetrability of the medicine is high and the additional treatment can be carried out easily and reliably. In addition, it is possible to save the trouble of changing to a “place frame” when storing the ground vehicle in combination with a high-strength wheel structure.

  In the configuration of the embodiment described above, the side plates 3 are joined to both side surfaces of the wheel body 2, but by forming the wheel body 2 in a width including the thickness of the side plates 3 on both sides, 2 itself can be used as the wheel 1.

  As described above, the ground vehicle wheel according to the present invention can cut out the entire wheel or the main part of the wheel from the laminated material obtained by assembling and bonding the single plate which is easily available and a homogeneous material can be easily selected. Ground vehicle wheels can be obtained. Therefore, the present invention can solve the present problem that it is increasingly difficult to obtain a solid material that has a large diameter and is free of cracks and decay as a material for wheels of ground vehicles, and is extremely effective in maintaining a traditional culture. It is.

BRIEF DESCRIPTION OF THE DRAWINGS (a) which shows the structure of the ground vehicle wheel which concerns on embodiment is a front view, (b) is a side view. The perspective view which shows the laminated material for carving out a wheel main body. The side view which shows the structure of a wheel main body. (A) which shows the structural example of a dumpling, (b) is a side view. (A) which makes the wheel for ground vehicles based on a prior art is a top view explaining cutting out from a solid material, (b) is a perspective view of the wheel for ground vehicles cut out.

Explanation of symbols

1 wheel 2 wheel body (wheel main part)
3 Side plate 4 Ground plate (single plate)
9 Glulam

Claims (2)

A single piece of wood and rectangular cross-section made from sawing is assembled into a combined form in the required vertical and horizontal widths, and adhesive is applied and pressed to form a laminated product by pressing and pressing. What is obtained by cutting the material into a wheel shape having a predetermined diameter and width constitutes the entire wheel or the main part of the wheel, and the exposed surface of each single plate on the outer peripheral surface in contact with the road surface of the wheel is a non-top surface. Ground vehicle wheels. The wheel for ground vehicles of Claim 1 by which the side plate which adhere | attached the several board | plate material was joined to the both sides | surfaces of the wheel main part.

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