Bed structure

Abstract

To provide a floor structure that can reduce noise and vibration during vehicle operation. [Solution] A floor structure for which an AGV travels, provided on an existing floor 1, comprising a floor mat 10 in which a plurality of blocks 11 are connected by flexible connecting parts 12, and gaps 13 are provided between adjacent blocks 11, and the part on the side on which the AGV travels where the gaps 13 are located is provided with a restraining part 14 to prevent the wheels of the AGV from falling in. Each of the blocks 11 has a shape in which the upper side is shorter than the lower side, the gap 13 has a shape in which the upper side is wider than the lower side, and the restraining part 14 is composed of protruding pieces 15 that protrude from the side wall parts 11a of the opposing blocks 11.

Description

Technical Field

[0001] The present disclosure relates to a floor structure on which a vehicle travels.

Background Art

[0002] Patent Document 1 and the like describe a traveling system for an automated guided vehicle (hereinafter referred to as "AGV") that automatically travels inside a building such as a logistics warehouse. Since factories, logistics warehouses, etc. are often rental facilities, a floor structure is provided on the existing floor for protecting the existing floor, in which floor materials having the strength required for the travel of the AGV are arranged.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In such a floor structure, noise and vibration occur when the AGV travels. Therefore, the floor structure is required to suppress noise and vibration during travel. Such problems are not limited to the travel of the AGV, but also apply to other vehicles such as a forklift for transportation and a cleaning vehicle.

Means for Solving the Problems

[0005] The present disclosure provides a floor structure. The floor structure is a floor structure provided on an existing floor on which a vehicle travels, and includes a floor material in which a plurality of blocks are connected by a flexible connecting portion and have a gap portion between adjacent blocks, and a suppressing portion for suppressing the drop of the wheels of the vehicle is provided at a portion where the gap portion is located and on the side where the vehicle travels.

Effects of the Invention

[0006] According to this disclosure, a floor structure can be provided that can reduce noise and vibration during vehicle operation. [Brief explanation of the drawing]

[0007] [Figure 1] This is a schematic diagram showing the floor structure of the first embodiment in a state where an AGV is traveling. [Figure 2] This is a schematic diagram illustrating the floor mat in the first embodiment. [Figure 3] This diagram illustrates the relationship between the wheel, the projection, and the gap. [Figure 4] This figure shows the relationship between the length a of the projection, the amount of deflection δ, and the amount of drop Δ. [Figure 5] This figure shows the relationship between the total drop Δ and the length a of the projection when the thickness t of the projection is changed. [Figure 6] This figure shows the relationship between the length a of the projection and the total drop amount Δ when L is set to L ≤ 10 mm and t ≥ 4 mm, for L between 2 mm and 15 mm. [Figure 7] This is a schematic diagram illustrating the floor mat in the second embodiment. [Figure 8] This is a schematic diagram illustrating the floor mat in the third embodiment. [Figure 9] This is a schematic diagram illustrating the floor mat in the fourth embodiment. [Figure 10] This is a schematic diagram illustrating the floor structure in the fifth embodiment. [Figure 11] This is a schematic diagram illustrating the floor mat used in the fifth embodiment. [Figure 12] This is a schematic diagram showing the sixth embodiment, where (a) is a side view and (b) is a top view. [Figure 13] This is a schematic diagram showing the seventh embodiment. [Figure 14] This is a schematic diagram showing the eighth embodiment. [Figure 15] This is a schematic diagram showing the ninth embodiment. [Figure 16] This is a schematic diagram of the tenth embodiment. [Figure 17] It is a schematic diagram showing the 11th embodiment. [Figure 18] It is a schematic diagram showing the 12th embodiment. [Figure 19] It is a schematic diagram showing the 13th embodiment. [Figure 20] It is a schematic diagram showing the 14th embodiment.

Mode for Carrying Out the Invention

[0008] Referring to FIGS. 1 to 20, an embodiment of the floor structure will be described. <The First Embodiment> As shown in FIG. 1, the floor structure in this embodiment is the floor structure of a building such as a logistics warehouse, and constitutes a floor on which an AGV 2 as a vehicle that travels autonomously at a constant speed travels. The floor structure includes a floor mat 10 as a floor material laid on an existing floor 1. Among the floor mat 10, a power feeding coil 3 for feeding power to the AGV 2 is provided in the portion where the AGV 2 travels. Specifically, the floor mat 10 is provided with an upper concave portion 4 and a lower concave portion 5 for arranging the power feeding coil 3 continuously in the thickness direction. The upper concave portion 4 is a larger recess than the lower concave portion 5. The power feeding coil 3 is arranged in the lower concave portion 5. The power feeding coil 3 is a printed circuit board in which a conductor wiring pattern is formed in a coil shape on an insulating substrate. A protective plate 6 such as a glass epoxy plate for protecting the power feeding coil 3 is arranged in the upper concave portion 4. And a protective sheet 7 is arranged on the surface of the floor mat 10 that comes into contact with the wheels of the AGV 2. Further, the floor mat 10 is arranged on the existing floor 1 with an anti-slip sheet 8 interposed therebetween.

[0009] As an example, the AGV 2 includes front wheels 2b and rear wheels 2c before and after the vehicle body 2a, and two intermediate wheels 2d arranged side by side in the width direction between the front wheels 2b and the rear wheels 2c. The front wheels 2b and the rear wheels 2c are small wheels located at the center in the width direction of the vehicle body 2a and are auxiliary wheels. The intermediate wheels 2d are large wheels located on the side surface of the vehicle body 2a and are drive wheels.

[0010] As shown in FIG. 2, specifically, the floor material mat 10 is formed by connecting a plurality of blocks 11. Each block 11 is connected by a connecting portion 12. A gap portion 13 is formed between adjacent blocks 11 and at the position of the connecting portion 12. Each block 11 has a trapezoidal shape in a longitudinal cross-sectional view. Each block 11 has a shape with the upper side being the short side and the lower side being the long side. A connecting portion 12 is formed at a position connecting the lower sides between adjacent blocks 11, and a gap portion 13 is formed above the connecting portion 12. A suppressing portion 14 is provided at a portion where the gap portion 13 is located and on the side where the AGV 2 travels to suppress the wheels 2b, 2c, 2d from falling into the gap portion 13. The suppressing portion 14 is composed of a protruding piece 15 protruding from the side wall portion 11a of the opposing block 11 so as to narrow the width of the gap portion 13 continuously with the upper side. Incidentally, the thickness t of the protruding piece 15 is, for example, 6 mm.

[0011] Specifically, each block 11 is formed by filling a filling material 17 into a formwork portion 16. The formwork portion 16 may be made of wood, metal, or synthetic resin. In the case of being made of synthetic resin, for example, it is a reinforced plastic. Further, the filling material 17 is preferably high-strength lightweight concrete. The upper side, which is the short side, of the formwork portion 16 is closed, and the lower side, which is the long side, is open. When filling the filling material 17, the formwork portion 16 is filled with the filling material 17 with the opening facing upward. After the filling material 17 is fixed to the formwork portion 16, it is turned upside down. The short side portion located on the upper side becomes the surface on which the AGV 2 travels, and the long side portion becomes the portion facing the existing floor 1.

[0012] The side wall portion 11a of block 11 is composed of an inclined surface that gradually slopes inward from the lower edge of the long side to the upper edge of the short side. Therefore, the gap portion 13 formed between the opposing side wall portions 11a of adjacent blocks 11 has a triangular shape such that the upper side is wider than the lower side. Adjacent blocks 11 are connected at the lower edge by a connecting portion 12. The connecting portion 12 is a part provided in series with the formwork portion 16 and is, for example, the same thickness as the formwork portion 16 or thinner. The connecting portion 12 is configured such that the other block 11 is flexible in the height direction relative to one block 11. As a result, the floor mat 10 can follow the unevenness of the existing floor 1 by allowing adjacent blocks 11 to flex at the connecting portion 12.

[0013] The projections 15 constituting the suppression portion 14 extend from the upper ends of the side walls 11a of adjacent blocks 11 in a direction that closes the gap 13. The tips of the projections 15 extending from both sides are spaced apart and, in the first embodiment, do not completely close the gap 13. The gap 18 formed between the tips of the projections 15 extending from both sides is preferably narrow from the viewpoint of suppressing the drop of the wheels 2b to 2d, but each projection 15 becomes more flexible as it extends from its base end. If the projections 15 bend downward due to the weight of the AGV 2, the noise and vibration suppression effect will be reduced. The gap 18 is preferably 5.0 mm to 5.5 mm as an example.

[0014] The gap 18 is set as follows. Here, the dimensions are defined as shown in Figure 3. L = Length of the open end of the gap 13 (length between the base ends of the projections 15) a = length of projection 15 b = length of the gap 18 R = radius of AGV2's wheels 2b to 2d t = thickness of projection 15 δ = amount of deflection of projection 15 Load by P=AGV2 EI = Bending stiffness Δ = Total drop of the wheel Equation 1 shows the amount of deflection δ of the projection 15.

[0015] Equation 1 shows that R(1-cosθ) represents the maximum amount of drop of wheels 2b-2d in the gap 18. That is, it represents the amount of drop just before the wheel is on one side of the restraining part 14 and makes contact with the other side of the restraining part 14. Figure 4 shows the relationship between the length a of the projection 15, the deflection amount δ of the projection 15, and the drop amount Δ. Line A shows the relationship between the deflection amount δ of the projection 15 and the length a of the projection 15. Line B shows the relationship between the length a of the projection 15 and the drop amount R(1-cosθ) of wheels 2b-2d in the gap 18. Line C shows the relationship between the length a of the projection 15 and the total drop amount Δ of wheels 2b-2d in the gap 18.

[0016] From line A, it can be confirmed that the amount of deflection δ of the projection 15 with respect to the length a of the projection 15 increases as the length a of the projection 15 increases, or as the load P by the AGV2 increases according to equation 2. From line B, it can be confirmed that the amount of drop R(1-cosθ) of the wheels 2b~2d in the gap 18 decreases as the length a of the projection 15 increases, because the gap 18 becomes smaller. From line C, the total amount of drop Δ decreases when the length a of the projection 15 is small (for example, up to about 3.5 mm). On the other hand, when the length a of the projection 15 becomes longer (for example, exceeding about 3.5 mm), the total amount of drop Δ increases.

[0017] Figure 5 shows the relationship between the total drop Δ and the length a of the projection 15 when the thickness t of the projection 15 is changed, for L=15mm. Line D shows the case where the thickness t of the projection 15 is 2mm, line E shows the case where the thickness t of the projection 15 is 4mm, and line F shows the case where the thickness t of the projection 15 is 6mm. From Figure 5, it can be confirmed that the total drop Δ decreases as the thickness of the projection 15 increases. Furthermore, for projection 15 thicknesses of 4mm and 6mm, the total drop Δ can be made significantly smaller compared to a thickness of t2mm. Note that Figure 5 shows the case where R is 38mm, but lines D to F show similar characteristics even when R is large.

[0018] Figure 6 shows the relationship between the length a of the projection 15 and the total drop Δ when L is set from 2 mm to 15 mm. If the actual usage conditions are L ≤ 10 mm (below line G) and t ≥ 4 mm (below line H), then the length a, thickness b, and gap 18 of the projection 15 should be designed to fit within the region R shown in the hatching. Note that although Figure 6 shows the case where R is 38 mm, lines G and H exhibit similar characteristics even when R is larger.

[0019] <Operation of the First Embodiment> As shown in Figure 1, the floor mat 10, configured as described above, is placed with the long side of each block 11 facing downwards after laying a non-slip sheet 8 on top of the existing floor 1. Upper recesses 4 and lower recesses 5 are provided at the positions where the power supply coil 3 will be placed, and the power supply coil 3 and protective plate 6 will be placed therein. After that, a protective sheet is laid on the surface of the floor mat 10.

[0020] In the floor structure configured as described above, the AGV2 travels on the floor mat 10. At this time, protruding pieces 15, which serve as restraining parts 14, are provided at the positions of the gaps 13, and the play area 18 is narrowed. Therefore, when the AGV2 travels, it is possible to prevent it from falling into the gaps 13 between the wheels 2b and 2d.

[0021] <Effects of the First Embodiment> The effects of the first embodiment will be described. (1-1) The floor mat 10 is constructed so that adjacent blocks 11 are connected by connecting parts 12 and gaps 13 are provided between them, so even if the existing floor 1 is uneven, the mat can be laid to conform to the unevenness.

[0022] (1-2) During operation, the projection 15 of the suppression part 14 can prevent the AGV2 from falling into the gap 13 between the wheels 2b and 2d. This reduces noise and vibration during operation of the AGV2. The projection 15 can be integrally molded during the manufacturing of the mold part 16.

[0023] (1-3) The surface on which the AGV2 travels is the closed bottom of the formwork section 16, and not the surface on which the filling material 17 is exposed. The surface of the filling material 17 faces the existing floor 1. Therefore, damage to the surface of the filling material 17 can be suppressed even by repeated travel of the AGV2.

[0024] <Second Embodiment> Figure 7 shows a floor mat 20 of the second embodiment. Unlike the floor mat 10 of the first embodiment, the floor mat 20 is composed of solid blocks 21 made of synthetic resin with a solid core. The solid blocks 21 are connected to adjacent solid blocks 21 at connecting portions 22 at the bottom edge. A gap portion 23 is formed above the connecting portion 22. With this configuration, the manufacturing process of filling the mold portion 16 with filler 17, as in the first embodiment, can be omitted, and the floor mat can be made from, for example, a molded product. Therefore, the manufacturing efficiency of the floor mat 20 can be improved.

[0025] <Third Embodiment> Figure 8 shows a modified example of the first embodiment. In the third embodiment, the floor mat 26 omits the projection 15 as the restraining portion 14, and instead places a filler material 27 in the gap portion 13. The filler material 27 is a member that closes the opening of the gap portion 13. The filler material 27 is, for example, a molded product after curing made of the same or a different synthetic resin as the formwork portion 16. Such a filler material 27 is fixed by press-fitting it into the gap portion 13. For example, the outer surface of the filler material 27 is inclined to correspond to, for example, the side wall of the block 11. The filler material 27 is fixed by adhesive, welding, or the like.

[0026] Furthermore, the gap filling material 27 may be an uncured material such as UV resin or a cement-based material used to fill the gap 13. In this case, the uncured gap filling material 27 will harden after filling. In this case, the gap filling material 27 may be used to fill the entire gap 13, or it may be used only on the upper part of the gap 13, leaving the gap 13 unfilled. Additionally, a protective sheet 7 may be placed on the surface of the floor mat 26 to protect the gap filling material 27 and the floor mat 26.

[0027] With this type of floor mat 26, since there is no integral projection 15 on the formwork portion 16, the structure can be simplified. The floor mat 26 may also be constructed from solid blocks 21, as in the second embodiment.

[0028] <Fourth Embodiment> Figure 9 shows the floor mat 30 in the fourth embodiment. The floor mat 30 is constructed by inverting the floor mat 10 of the first embodiment. That is, the floor mat 30 is also constructed by connecting multiple blocks 31 with connecting parts 32. A gap 33 is formed between adjacent blocks 31. Each block 31 has a shape in which the upper side is the longer side and the lower side is the shorter side. Adjacent blocks 31 are connected by connecting parts 32 at the upper side. A gap 33 is formed below the connecting parts 32. The gap 33 has a shape in which the lower side is wider than the upper side. The upper surface of the floor mat 30 is the surface on which the AGV 2 travels, and the connecting parts 32 at the upper side function as a restraining part that prevents the wheels 2b to 2d from falling into the gap 33. As a result, the floor mat 10 can follow the unevenness of the existing floor 1 by allowing adjacent blocks 11 to flex at the connecting parts 32. In addition, the connecting portion 32 can prevent the wheels 2b to 2d from falling into the gap portion 33.

[0029] Each block 31 is constructed by filling a formwork portion 36 with a filler material 37. The formwork portion 36 has a closed lower edge (short side) and an open upper edge (long side). When filling with the filler material 37, the formwork portion 36 is filled with the filler material 37 with the opening facing upwards. The long side located on the upper side becomes the surface on which the AGV 2 travels, and the short side becomes the part that faces the existing floor 1. The connecting portion 32 is a part provided in series with the formwork portion 36 and has, for example, the same thickness as the formwork portion 36. The connecting portion 32 is configured such that one block 31 is flexible in the height direction relative to the other block 31. As a result, the floor mat 30 can follow the unevenness of the existing floor 1 by allowing adjacent blocks 31 to flex at the connecting portion 32. In addition, the connecting portion 32 functions as a restraining portion 14, preventing the wheels 2b to 2d from falling into the gap portion 33.

[0030] The floor mat 30, configured as described above, is placed with its short side facing downwards after the anti-slip sheet 8 is laid on the existing floor 1. Subsequently, a protective sheet 7 may be laid on the surface of the floor mat 30. In this embodiment, the opening of the block 31 of the floor mat 30 becomes the running surface of the AGV 2, and the filler material 37 is visible from the opening. Therefore, it is preferable to lay a protective sheet 7 on the surface of the floor mat 30 to protect the surface of the exposed filler material 37.

[0031] With this type of floor mat 30, since there is no integral projection 15 on the formwork portion 36 as in the first embodiment, the structure can be simplified. The floor mat 30 may also be constructed from solid blocks 21, as in the second embodiment.

[0032] <Fifth Embodiment> Figures 10 and 11 show the floor structure in the fifth embodiment. This floor structure is constructed by stacking floor mats 40 of the same configuration vertically. As shown in Figure 11, each floor mat 40 is composed of multiple blocks 41 connected by connecting parts 42. A gap 43 is formed between adjacent blocks 41 and above the connecting parts 42. Each block 41 has a trapezoidal shape with one long side and the other short side. Adjacent blocks 41 are connected by connecting parts 42 at the long side. A gap 43 is formed above the connecting parts 42. The gap 43 has a concave shape into which a block 41 can be fitted. That is, the gap 43 has a trapezoidal shape with the block 41 upside down. Each block 41 is constructed by filling a formwork part 46 with a filler material 47. When filling with the filler material 47, the formwork section 46 is filled with the filler material 47 with the opening facing upwards.

[0033] To construct the floor structure of the fifth embodiment, first, the lower floor mat 40d is laid on the existing floor 1. At this time, a non-slip sheet 8 may be laid on the existing floor 1. The lower floor mat 40 is positioned so that the long side of the block 41 faces the existing floor 1. The block 41 protrudes from the existing floor 1, and a concave gap 43 corresponding to the shape of the block 41 is located between adjacent blocks 41. Next, the upper floor mat 40u is placed with the block 41 facing downwards, and the block 41 is fitted into the gap 43 of the lower floor mat 40. Since the connecting portion 42 of the floor mats 40d and 40u is flexible, the overlapping work is easy.

[0034] As a result, the gap 43 between the lower floor mats 40 is blocked by the block 41 of the upper floor mat 40. The block 41 of the upper floor mat 40 functions as a restraining part to prevent the wheels 2b to 2d of the moving AGV2 from falling in. When overlapping the two floor mats 40, they can simply be placed on top of each other, or they can be fixed in place using adhesive. The long side of the block of the upper floor mat 40 becomes the running surface for the AGV2. The filling material 47 is visible from the opening formed in the long side of the formwork section 46 of the upper floor mat 40. Therefore, a protective sheet 7 may be placed on top of the upper floor mat 40. This prevents damage to the filling material 47 visible from the opening of the block of the upper floor mat 40, even when the AGV2 repeatedly runs over it.

[0035] <Sixth Embodiment> Figures 12(a) and (b) are schematic diagrams showing the sixth embodiment, where (a) is a side view and (b) is a top view. Here, the floor mat used is the floor mat 10 from the first embodiment. For example, the width 49 of the wheels 2b to 2d of the AGV2 is set to 30 mm. Also, the gap 18 is set to 2 mm, and the width 48 of the top surface of the block 11 is set to 25 mm. In this way, even if the width 48 of the top surface of the block 11 is smaller than the width 49 of the wheels 2b to 2d, if the dimension of the gap 18 is smaller than the width 49 of the wheels 2b to 2d, the wheels 2b to 2d can be prevented from falling in.

[0036] <Seventh Embodiment> Figure 13 is a schematic diagram showing the seventh embodiment, and the floor mat 50 used is a modified version of the first embodiment. In the floor mat 50, each block 51 has a hexagonal shape in plan view. Adjacent blocks 51 are connected by connecting parts, and a gap is formed above the connecting parts. A restraining part 53 is formed above the part where the gap is located. The restraining part 53 is a projection that extends from the upper end of the side wall of adjacent blocks 51 in a direction that closes the gap. The tips of the projections extending from both sides are spaced apart, forming a gap 54. The gap 54 is a part where the wheels 2b to 2d will still fall to some extent, even though the projections restrain the wheels 2b to 2d from falling into the gap. Therefore, in the seventh embodiment, the gap 54 is provided so as not to be perpendicular to the X direction, which is the direction of travel of the AGV2. In other words, the gap portion 54 is provided so as to extend parallel or diagonally to the X direction, which is the main direction of travel for the AGV2.

[0037] In the floor mat 50 shown in Figure 13, the X direction is the direction of travel, and the Y direction, which is perpendicular to the X direction, is not considered a direction of travel. The first side 51a and the second side 51b of each block 51 are sides that intersect diagonally with respect to the X direction. The third side 51c and the fourth side 51d are sides that are parallel to the X direction. The fifth side 51e and the sixth side 51f are sides that intersect diagonally with respect to the X direction. In contrast, when the direction of travel of the AGV2 is the Y direction, the third side 51c and the fourth side 51d become perpendicular.

[0038] Therefore, when using the floor mat 50, the primary direction of travel for the AGV2 is the X direction. This prevents the wheels 2b to 2d of the AGV2 from falling into the gap 54.

[0039] <Eighth Embodiment> Figure 14 is a schematic diagram showing the eighth embodiment. The floor mat 56 has a parallelogram shape in each block 57 when viewed from above. Rows of blocks 57 arranged in the X direction are offset by half the width of the blocks 57 in the Y direction relative to adjacent rows of blocks 57 in the X direction. Adjacent blocks 57 are connected by connecting parts, and a gap is formed above the connecting parts. A restraining part 58 is formed in the area where the gap is located. The restraining part 58 has projections that extend from the upper ends of the side walls of adjacent blocks 57 in a direction that closes the gap. The tips of the projections extending from both sides are spaced apart, forming a gap 59. In the eighth embodiment as well, the gap 59 is provided so as not to be perpendicular to the X direction, which is the direction of travel of the AGV2, as much as possible. That is, the gap 59 is provided so that the main direction of travel of the AGV2 extends parallel to or diagonally to the X direction.

[0040] In the floor mat 56, the X direction is the direction of travel, and the Y direction, which is perpendicular to the X direction, is not considered the direction of travel. The first side 57a and the second side 57b of each block 57 are parallel to each other and intersect diagonally with respect to the X direction. The third side 57c and the fourth side 57d are also parallel to each other and are parallel to the X direction. The ends of the first side 57a and the second side 57b are located midway between the third side 57c and the fourth side 57d. In contrast, when the direction of travel of the AGV2 is the Y direction, the third side 57c and the fourth side 57d become perpendicular to each other.

[0041] Therefore, when using the floor mat 56, the primary direction of travel for the AGV2 is the X direction. This prevents the wheels 2b to 2d of the AGV2 from falling into the gap 59.

[0042] <Ninth Embodiment> Figure 15 is a schematic diagram showing the ninth embodiment. In the ninth embodiment, the rows of blocks 61 arranged in the X direction are not misaligned with the rows of blocks 61 adjacent to the rows of blocks 61 in the X direction in the Y direction, compared to the floor mat 56 in the eighth embodiment. In the ninth embodiment as well, the gap 62 is provided so as not to be perpendicular to the X direction, which is the direction of travel of the AGV2. That is, the gap 59 is provided so as to extend parallel or diagonally to the X direction, which is the main direction of travel of the AGV2. Therefore, even when using the floor mat 60, the main direction of travel of the AGV2 is the X direction. This makes it possible to prevent the wheels 2b to 2d of the AGV2 from falling into the gap 62.

[0043] <Tenth Embodiment> Figure 16 is a schematic diagram of the tenth embodiment. The floor mat 65 has a parallelogram shape in each block 66 when viewed from above. A row of blocks 66 extending in the X direction is offset by half a block 66 in the X direction relative to a row of blocks 57 adjacent to it in the Y direction. Also, rows of blocks 66 adjacent to each other in the Y direction have different inclination directions for the edges that intersect in the X direction. There is a gap between adjacent blocks 66, and a restraining portion 67 is formed in the gap. The restraining portion 67 is a projection that extends from the upper end of the side wall of adjacent blocks 57 in a direction that closes the gap, and the tips of the projections are spaced apart, forming a gap 68.

[0044] In the floor mat 56 shown in Figure 16, the X direction is the direction of travel, and the Y direction, which is perpendicular to the X direction, is not considered the direction of travel. The first side 66a and the second side 66b of each block 66 are sides that intersect diagonally with respect to the X direction. The third side 66c and the fourth side 66d are sides that are parallel to the X direction. In contrast, when the direction of travel of the AGV2 is the Y direction, the third side 66c and the fourth side 66d become perpendicular to each other.

[0045] Therefore, when using the floor mat 65, the primary direction of travel for the AGV2 is the X direction. This prevents the wheels 2b to 2d of the AGV2 from falling into the gap 68.

[0046] <Embodiment 11> Figure 17 is a schematic diagram showing the 11th embodiment. In the 11th embodiment, the rows of blocks 71 in the X direction of the floor mat 70 are not offset relative to the rows of blocks 61 in the X direction that are adjacent in the Y direction, compared to the floor mat 65 in the 10th embodiment. In the 11th embodiment as well, the gaps 72 are provided so as not to be perpendicular to the X direction, which is the direction of travel of the AGV2. That is, the gaps 72 are provided so as to extend parallel to or diagonally to the X direction, which is the main direction of travel of the AGV2. Therefore, even when using the floor mat 70, the main direction of travel of the AGV2 is the X direction. This makes it possible to prevent the wheels 2b to 2d of the AGV2 from falling into the gaps 72.

[0047] <Twelfth Embodiment> Figure 18 is a schematic diagram showing the twelfth embodiment. In the twelfth embodiment, the floor mat 75 has a curved projection 76a in each block 76 surrounded by four curved edges. The four curved projections 76a face in the same direction. Between adjacent curved projections 76a, there is a curved recess 76b into which the curved projection 76a fits. Between adjacent blocks 76, there is a gap, and a restraining portion 77 is provided, which is made up of a projection extending in the direction that closes the gap. The tips of the projections are spaced apart from each other, forming a gap 78.

[0048] In the floor mat 75 shown in Figure 18, whether the travel direction is in the X direction or the Y direction, most of the mat is not perpendicular to the travel direction of the AGV2. The portion perpendicular to the travel direction of the AGV2 is an extremely narrow area 76c, which is, for example, almost a point. Therefore, when using the floor mat 75, it is possible to prevent the wheels 2b to 2d of the AGV2 from falling into the gap 78, regardless of whether the travel direction is in the X direction or the Y direction.

[0049] <13th Embodiment> Figure 19 is a schematic diagram showing the 13th embodiment, illustrating the blocks 81 that constitute the floor mat. In plan view, each block 81 has a basic rectangular shape, with two adjacent sides being convex protruding arc edges 81a and the remaining two adjacent sides being concave arc edges 81b. Even in a floor mat where each block 81 has this shape, most of the area is not perpendicular to the direction of travel of the AGV2. The area perpendicular to the direction of travel of the AGV2 is an extremely narrow range 81c, for example, almost a point. Therefore, when using a floor mat composed of such blocks 81, it is possible to prevent the wheels 2b to 2d of the AGV2 from falling into the gap 78, regardless of whether the travel direction is the X or Y direction.

[0050] <14th Embodiment> Figure 20 is a schematic diagram showing the 14th embodiment. In the 14th embodiment, the floor mat consists of adjacent blocks, the first block 86 and the second block 87, and the basic shape is a rectangle of the same size and shape. The first block 86 is composed of a convex protruding arc edge 86a, and the second block 87 is composed of a concave arc edge 87a corresponding to the protruding arc edge 86a. Between the protruding arc edge 86a and the concave arc edge 87a, a restraining portion 88 composed of a protruding piece is formed, and a gap portion 89 is formed. Even in a floor mat in which the first block 86 and the second block 87 have such shapes, most of the area is not perpendicular to the direction of travel of the AGV2. The area perpendicular to the direction of travel of the AGV2 is an extremely narrow range 85, for example, almost a point. Therefore, when using a floor mat composed of such a first block 86 and second block 87, it is possible to prevent the wheels 2b to 2d of the AGV2 from falling into the gap 89, regardless of whether the direction of travel is the X direction or the Y direction.

[0051] <Variation> The first to fourteenth embodiments can be implemented with the following modifications. These embodiments and the following modifications can be combined with each other to the extent that they do not contradict each other technically.

[0052] The vehicles that travel are not limited to AGV2s that travel at a constant speed. For example, other vehicles such as transport forklifts or cleaning vehicles may be used. Furthermore, the vehicles that travel are not limited to vehicles whose travel speed is controlled to a constant speed. In addition, the vehicles may be manned vehicles or unmanned autonomous vehicles. The floor structure relating to this disclosure can be applied to the floor structure on which the vehicle travels.

[0053] The technical concepts that can be understood from the above embodiments and modified examples are described below. (Note 1) The suppression portion is composed of projections that extend from the side walls of the opposing block, continuous with the upper edge, so as to narrow the gap, with the tips spaced apart and the space between them being a gap. The width of the gap is smaller than the width of the vehicle's wheels. floor structure.

[0054] (Note 2) The aforementioned gap extends parallel or diagonally with respect to the direction of travel of the vehicle. floor structure. [Explanation of Symbols]

[0055] 1…Existing floor, 2…AGV, 3…Power supply coil, 4…Upper recess, 5…Lower recess, 6…Protective plate, 7…Protective sheet, 8…Anti-slip sheet, 10…Flooring mat, 11…Block, 11a…Side wall section, 12…Connecting section, 13…Gap section, 14…Restraining section, 15…Protruding piece, 16…Formwork section, 17…Filling material, 18…Gap section, 20…Flooring mat, 21…Solid block, 22…Connecting section, 23…Gap section, 26…Flooring mat 27...filling material, 30...flooring mat, 31...block, 32...connecting part, 33...gap part, 36...formwork part, 37...filling material, 40...flooring mat, 41...block, 42...connecting part, 43...gap part, 46...formwork part, 47...filling material, 48...width, 49...width, 50...flooring mat, 51...block, 51a...1st side, 51b...2nd side, 51c...3rd side, 51d...4th side, 51e...5th side, 51f...6th side Edge, 53...Restraining part, 54...Gap part, 56...Floor material mat, 57...Block, 57a...1st edge, 57b...2nd edge, 57c...3rd edge, 57d...4th edge, 58...Restraining part, 59...Gap part, 60...Floor material mat, 61...Block, 62...Gap part, 65...Floor material mat, 66...Block, 66a...1st edge, 66b...2nd edge, 66c...3rd edge, 66d...4th edge, 67...Restraining part, 68...Gap part, 70...Floor Material mat, 71...block, 72...gap section, 75...flooring material mat, 76...block, 76a...curved protrusion, 76b...curved recess, 76c...range, 77...restraining section, 78...gap section, 81...block, 81a...protruding arc edge, 81b...concave arc edge, 81c...range, 85...range, 86...first block, 86a...protruding arc edge, 87...second block, 87a...concave arc edge, 88...restraining section, 89...gap section.

Claims

1. A floor structure installed on an existing floor, on which vehicles run, The flooring material comprises multiple blocks connected by flexible connecting parts, with gaps between adjacent blocks. The portion of the gap located on the side on which the vehicle travels is provided with a restraining part that prevents the vehicle's wheels from falling in. floor structure.

2. Each of the aforementioned blocks has a shape in which the upper edge is shorter than the lower edge. The gap portion has a shape in which the upper side is wider than the lower side. Adjacent blocks are connected at the lower edge via the connecting portion. The suppression portion is composed of projections that extend from the side walls of the opposing blocks, continuous with the upper edge, so as to narrow the gap. The floor structure according to claim 1.

3. Each of the aforementioned blocks has a shape in which the upper edge is shorter than the lower edge. The gap portion has a shape in which the upper side is wider than the lower side. Adjacent blocks are connected at the lower edge via the connecting portion. The suppression portion is composed of a gap-filling material that seals the gap. The floor structure according to claim 1.

4. Each of the aforementioned blocks has a shape in which the upper side is longer than the lower side. The gap portion has a shape in which the lower side is wider than the upper side. Adjacent blocks are connected at the upper edge position via the connecting portion. The connecting portion is the restraining portion. The floor structure according to claim 1.

5. The gap portion has a shape into which the block can be fitted, The two upper and lower floor materials are stacked on top of each other such that the blocks of each piece fit into the gap between them. The upper block of the flooring material fitted into the gap serves as the restraining portion. The floor structure according to claim 1.

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