Slope unit

Abstract

To provide a fixation guide to be attached on a slope unit applicable to various steps by aligning and stacking blocks, which prevents derailment while preventing displacement of the blocks.SOLUTION: A slope unit of the present invention allows a continuous slope and passage to be formed through: arranging front-rear and right-left to each other a plurality of parallelepiped blocks and a plurality of inclined blocks with the same width and the same length viewed from the above, such that those end surfaces are aligned; and stacking them vertically. Each of the parallelepiped block and the inclined block has a through-hole passing from side to side, which connects to each other fixation guards to right / left ends of the uppermost step of the formed slope and passage with connectors penetrating through through-holes of the uppermost step or other steps of the parallelepiped block and the inclined block. The fixation guard prevents the parallelepiped block or the inclined block from separating through being fastened by the connectors from right / left directions and functions as a guard for derail prevention.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a slope unit that is temporarily installed on steps in buildings and passageways, particularly at construction sites. [Background technology]

[0002] Temporary ramps used to overcome steps in buildings and passageways may be equipped with side guards to prevent vehicles from slipping off the ramps.

[0003] Patent Document 1 discloses a temporary slope that is easy to handle and prevents loaded carts from slipping, and that can easily be constructed to a slope of any desired height. Inclined blocks and extension blocks can be placed adjacent to each other to form a continuous slope.

[0004] Patent Document 2 discloses a combination slope that is configured to accommodate various heights and is used to enable wheelchairs and the like to get over steps at the entrance to bathrooms and rooms. A terminal slope member is combined with one or more intermediate slope members, and various heights can be accommodated by changing the number of intermediate slope members.

[0005] Patent Document 3 discloses a portable ramp equipped with selectable reinforcing members that can be used across uneven surfaces. It is said that multiple types of reinforcing channels are fabricated and selectively attached depending on the usage environment to improve the overall strength and impact resistance of the ramp. This portable ramp is configured to improve the overall strength of the ramp by selectively attaching multiple types of reinforcing channels, each with recesses corresponding to the shapes of the left and right edge portions of the basic ramp plate, to the side edges of the ramp plate. The reinforcing channels include standard U-shaped channels, U-shaped channels with guide pieces that extend upward on the end faces to form guide pieces to prevent wheels from running off, and multiple types of reinforcing channels with different plate materials, shapes, and / or thicknesses. The optimal channel suited to the usage environment is selected and attached to the side edges of the ramp plate to improve the overall function and / or strength of the ramp. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Laid-Open No. 2008-248477 [Patent Document 2] Japanese Patent Application Publication No. 9-195483 [Patent Document 3] Patent Publication No. 2018-089085 Summary of the Invention [Problem to be solved by the invention]

[0007] The temporary slope described in Patent Document 1 can be constructed at various heights by combining inclined blocks and extension blocks and arranging them adjacent to one another. However, to prevent misalignment between the inclined blocks and extension blocks, or between the extension blocks themselves, a connecting mechanism is provided to fit the blocks together and restrict lateral movement. The connecting mechanism is realized by combining a hammerhead-shaped protrusion with a recess that fits into it (Figures 4-5 in the same document). For this reason, manufacturing each block out of metal requires a cutting process, which increases manufacturing costs.

[0008] In the slope described in Patent Document 2, components such as terminal slope components and intermediate slope components are connected by fitting them together using connecting and fixing means to prevent misalignment in the front-to-rear direction. By configuring each component, including the connecting and fixing means, with only dovetail grooves and convex shapes that have the same cross section in the left-to-right direction, it becomes possible to form each component with the same cross-sectional shape in the left-to-right direction, and they can be manufactured by extrusion molding, which is inexpensive to manufacture even when made of metal. However, when manufactured by extrusion molding, the same cross-sectional shape in the left-to-right direction makes it impossible, in principle, to prevent misalignment in the left-to-right direction.

[0009] The ramp described in Patent Document 3 is not block-shaped as described above, but plate-shaped, and reinforces and prevents wheels from slipping off by attaching U-shaped channels with guide pieces, whose end faces are extended upward to form guide pieces, to both sides of the ramp plate. This technology is based on plate-shaped ramps and does not assume that they will be lined up front, back, left, or right, so it cannot be used as a technology to prevent block displacement.

[0010] The object of the present invention is to provide a fixed guard that also has the function of preventing misalignment in the left-right direction when the inclined and rectangular blocks are manufactured by extrusion molding so that they each have the same cross section in the left-right direction in a slope unit in which inclined blocks and rectangular blocks are stacked side by side to form a slope.

[0011] The means for solving these problems will be described below, but other problems and novel features will become apparent from the description of this specification and the accompanying drawings. [Means for solving the problem]

[0012] The slope unit of the present invention is a slope unit having a plurality of rectangular parallelepiped blocks, a plurality of inclined blocks, and a fixed guard, and is configured as follows.

[0013] The rectangular parallelepiped blocks have engaging portions that engage with each other when placed adjacent to each other in the front-to-rear direction, and locking portions that interlock with each other when stacked vertically to prevent them from coming apart upward.

[0014] The inclined block has the same width and length as the rectangular parallelepiped block, and has an engaging portion that engages with the engaging portion of the rectangular parallelepiped block when placed adjacent to the front side of the rectangular parallelepiped block, and a locking portion that engages with the locking portion of the rectangular parallelepiped block when stacked on top of the rectangular parallelepiped block to prevent it from coming off upward.

[0015] The fixed guards are attached to the left side of the left end and the right side of the right end of the top row of multiple rectangular blocks or multiple inclined blocks arranged adjacent to each other on the left and right sides and stacked in one or more rows, and prevent the multiple rectangular blocks or multiple inclined blocks arranged in the top row from moving apart in the left-right direction. [Effects of the Invention]

[0016] The advantages of the present invention can be briefly explained as follows: In a slope unit in which inclined blocks and rectangular parallelepiped blocks are stacked side by side to form a slope, when the inclined and rectangular parallelepiped blocks are manufactured by extrusion molding so that they have the same cross section in the left and right directions, a fixed guard can be provided that also has the function of preventing misalignment in the left and right direction. [Brief explanation of the drawings]

[0017] [Figure 1] FIG. 1 is a schematic perspective view showing an example of the configuration of a slope unit of the present invention. [Figure 2] FIG. 2 is a schematic perspective view showing one embodiment of the slope unit of the present invention. [Figure 3] FIG. 3 is an explanatory view showing a top perspective view of a portion where a connector is attached in one embodiment of the slope unit of the present invention. [Figure 4] FIG. 4 is an explanatory diagram showing a schematic top view of another configuration example of a connector of an embodiment of the slope unit of the present invention. [Figure 5] FIG. 5 is a schematic perspective view showing another embodiment of the slope unit of the present invention. [Figure 6] FIG. 6 is an explanatory view showing, in perspective from above, the mounting portion of a fixture in another embodiment of the slope unit of the present invention. [Figure 7] FIG. 7 is a schematic perspective view showing an example of the configuration of the fixed guard of the present invention. [Figure 8] FIG. 8 is a side view showing an example of the configuration of the inclined block and the rectangular parallelepiped block of the slope unit. [Figure 9] FIG. 9 is a schematic perspective view showing a first modified example of the fixed guard. [Figure 10] FIG. 10 is a schematic perspective view showing a second modified example of the fixed guard. [Figure 11] FIG. 11 is a schematic perspective view showing a third modified example of the fixed guard. DETAILED DESCRIPTION OF THE INVENTION

[0018] 1. Overview of the embodiment First, an outline of the exemplary embodiments disclosed in the present application will be described. In the outline of the exemplary embodiments, reference numerals in parentheses in the drawings merely illustrate components included in the concept of the components to which the reference numerals are attached.

[0019] [1] Slope unit with fixed guards that prevent left and right misalignment (Figs. 1 to 3, 8) A representative embodiment disclosed in this application is a slope unit (100) having a plurality of rectangular parallelepiped blocks (1), a plurality of inclined blocks (2), and a fixed guard (3), and is configured as follows.

[0020] The rectangular parallelepiped blocks (1) have engaging parts (11) that mesh with each other when placed adjacent to each other in the front-rear direction to prevent them from coming off in the front-rear direction, and locking parts (12) that mesh with each other when stacked vertically to prevent them from coming off in the upward direction.

[0021] The inclined block (2) has the same width and length as the rectangular parallelepiped block, and has an engaging portion (21) that engages with the engaging portion (11) of the rectangular parallelepiped block when placed adjacent to the front side of the rectangular parallelepiped block to prevent it from coming off in the front-to-rear direction, and a locking portion (22) that engages with the locking portion (12) of the rectangular parallelepiped block when stacked on top of the rectangular parallelepiped block to prevent it from coming off in the upward direction.

[0022] The fixed guards (3) are attached to the left side of the left end and the right side of the right end of the top tier of multiple rectangular blocks or multiple inclined blocks arranged adjacent to each other on the left and right sides and stacked in one or more tiers, and prevent the multiple rectangular blocks or multiple inclined blocks arranged in the top tier from moving apart in the left-right direction.

[0023] This allows for the provision of a fixed guard (3) that also functions to prevent left-right misalignment in a slope unit (100) in which inclined blocks (2) and rectangular blocks (1) are stacked side-to-side to form a slope. When the inclined and rectangular blocks are extrusion-molded to have the same cross section in the left-right direction, a separate component connecting all of the inclined blocks (2) and the rectangular blocks (1) in the left-right direction is not required. In many practical applications, pins or other connecting components are attached to all of the inclined blocks (2) and the rectangular blocks (1) to prevent left-right misalignment. However, there is a significant risk of forgetting to install the pins. Furthermore, it is difficult to confirm whether or not the pins have been installed from the exterior once the slope unit is assembled. Since the present invention simultaneously prevents left-right misalignment by attaching the fixed guard (3), the presence or absence of the fixed guard (3) can be confirmed at a glance, significantly reducing the risk of forgetting to install it.

[0024] [2] Connect the left and right fixed guards through the through holes in the block (Figures 2 to 4). In the slope unit (100) of [1], the slope unit further includes a connector (4). Each of the rectangular parallelepiped blocks and the inclined blocks is formed by extrusion molding in the left-right direction and has through-holes (13, 23) that penetrate in the left-right direction (Fig. 8). The connector connects the fixed guard (3) attached to the left side of the left end and the fixed guard (3) attached to the right side of the right end through the through-holes (13, 23) of the rectangular parallelepiped blocks (1) or inclined blocks (2) arranged in the top row or another row.

[0025] This allows the fixed guard, which also has the function of preventing the rectangular parallelepiped block and the inclined block from shifting left and right, to be attached with a simple operation.

[0026] [3] Connector for fastening the fixed guard with a wing nut (Figures 2 to 4) In the slope unit [2], the connector has a left-side bolt portion (43) that protrudes through the fixed guard attached to the left side of the left end when connecting the left and right fixed guards, and a right-side bolt portion (43) that protrudes through the fixed guard attached to the right side of the right end, and further has wing nuts (44) that tighten the left and right bolt portions, respectively.

[0027] This makes it possible to provide a connector that is easy to install. In the connector (4) of the slope unit [2], the left and right fixed guards (3) can be connected by any method, such as tightening with bolts and nuts or tightening with a ratchet belt, but by using bolts and wing nuts (44), installation can be easily performed without the need for tools.

[0028] [4] Fixed guard structure (Fig. 7) In the slope unit of [2] or [3], the fixed guard has a plate-like member (30) that contacts the side wall of the rectangular parallelepiped block or inclined block when attached to the top tier or a tiered rectangular parallelepiped block or inclined block, a stabilizing portion (32) that contacts the top surface of the rectangular parallelepiped block or inclined block, and a guard portion (31) that protrudes upward from the top surface of the rectangular parallelepiped block or inclined block.

[0029] This makes it possible to strengthen the resistance of the fixed guard (3) to impacts.

[0030] [5] It contacts the bottom block to prevent misalignment in the left-right direction (Figures 5 and 6). In the slope unit of [1], the rectangular parallelepiped blocks and the inclined blocks are each formed by extrusion molding in the left-right direction and have through holes (13, 23) passing through in the left-right direction. The fixed guard (3) attached to the left side of the left end has a fastener (5) inserted into the through hole of the left-end rectangular parallelepiped block or inclined block to fix the fixed guard, and when fixed, the fixed guard abuts against the left side of the lowest rectangular parallelepiped block or inclined block in the stack. The fixed guard attached to the right side of the right end has a fastener (5) inserted into the through hole of the right-end rectangular parallelepiped block or inclined block to fix the fixed guard, and when fixed, the fixed guard abuts against the right side of the lowest rectangular parallelepiped block or inclined block in the stack.

[0031] This allows the fixed guards (3) to be fixed in contact with both sides of the bottom rectangular or inclined block, preventing the top rectangular or inclined block from shifting left or right. The fixed guards do not have to be attached to both sides of the bottom rectangular or inclined block. When multiple rectangular or inclined blocks are stacked, the fixed guards need only be attached to the right side of the right-most block and the left side of the left-most block in each row, from the bottom to the top, and the attachment point can be any row from the bottom to the top.

[0032] [6] Example of fixture configuration (Figure 6) In the slope unit [5], the fixing device has a bolt (50) that is inserted through the outside of the fixed guard and two blocks (51, 52) that can change their width by contacting each other on their inclined surfaces, and the two blocks are widened by being tightened with the bolt, and abut against the walls (14, 24) of the through hole in the rectangular block or inclined block, thereby fixing the fixed guard.

[0033] This makes it possible to prevent the rectangular blocks or inclined blocks arranged in a row on each level from shifting left and right simply by fixing the left and right fixed guards to at least one rectangular block or inclined block on each side.

[0034] 2. Details of the embodiment The embodiment will be described in further detail.

[0035] [Embodiment 1] FIG. 1 is a schematic perspective view of an example of the configuration of a slope unit 100 of the present invention. FIG. 8 is a side view of an example of the configuration of an inclined block 2 and a rectangular parallelepiped block 1. The inclined block 2 is shown on the upper side (a), and the rectangular parallelepiped block 1 is shown on the lower side (b). For convenience, the description will be given assuming that the slope in FIG. 1 is viewed from the front to the back, ascending. In FIG. 1, the diagonally downward left direction is referred to as the front side, the diagonally upward right direction is referred to as the rear side, the upper left to lower right direction is referred to as the left-right direction, and the top and bottom of the page are referred to as the up-down direction. Therefore, FIG. 8 is a side view viewed from the right side, and the left side of FIG. 8 will be referred to as the front side, and the right side is referred to as the rear side. The inclined block 2 and rectangular parallelepiped block 1 illustrated in FIG. 8 are illustrated as being manufactured by extrusion molding so that they each have the same cross section in the left-right direction (the front-to-back direction on the page).

[0036] The rectangular parallelepiped blocks 1 have engaging portions 11 that interlock with each other when placed adjacent to each other in the front-to-rear direction (left-to-right direction in the figure) to prevent them from coming apart in the front-to-rear direction, and locking portions 12 that interlock with each other when stacked vertically to prevent them from coming apart upward. The inclined blocks 2 have the same width and length as the rectangular parallelepiped block 1. That is, the inclined blocks 2 fit snugly on top of the rectangular parallelepiped block 1. The inclined blocks 2 have engaging portions 21 that interlock with the engaging portions 11 of the rectangular parallelepiped block 1 when placed adjacent to the front side of the rectangular parallelepiped block 1 to prevent them from coming apart in the front-to-rear direction, and locking portions 22 that interlock with the locking portions 12 of the rectangular parallelepiped block 1 to prevent them from coming apart upward when stacked on top of the rectangular parallelepiped block 1.

[0037] The engaging portions 11 and 21 will now be described. The engaging portions 11 of the rectangular parallelepiped block 1 are formed on the front surface (left side of FIG. 8(b)) and rear surface (right side of FIG. 8(b)). When lining up rectangular parallelepiped blocks 1 front to back, if the side surfaces are rubbed together and slid from above to line up at the same height, the engaging portions 11 will engage and prevent them from coming apart front to back. The same is true when lining up the inclined block 2 in front of the rectangular parallelepiped block 1. If the rear surface of the inclined block 2 is rubbed against the front surface of the rectangular parallelepiped block 1 and slid from above to line up at the same height, the engaging portions 11 on the front of the rectangular parallelepiped block 1 and the engaging portions 21 on the rear surface of the inclined block 2 will engage and prevent them from coming apart front to back.

[0038] The locking portions 12 and 22 will now be described. When rectangular blocks 1 are stacked one on top of the other, the locking portion 12 on the top surface of the lower rectangular block 1 engages with the locking portion 12 on the bottom surface of the upper rectangular block 1, preventing the blocks from coming apart in the vertical direction. More specifically, by sliding the upper rectangular block 1 forward from a slight rearward position, the locking portion 12 protruding forward engages with the portion of the locking portion 12 on the top surface of the lower rectangular block 1 that protrudes rearward, preventing the blocks from coming apart in the vertical direction. While the terms "will not come apart" and "difficult to come apart" are used interchangeably here, "difficult to come apart" simply means "will not come apart" unless the blocks are slid in the opposite direction to the direction in which they were inserted, and there is no substantial difference between the two terms. The same applies when stacking an inclined block 2 on top of a rectangular block 1. The locking portion 12 on the top surface of the lower rectangular block 1 engages with the locking portion 22 on the bottom surface of the upper inclined block 2, preventing the blocks from coming apart in the vertical direction.

[0039] The fixed guards 3 are attached to the left side of the left end and the right side of the right end of the top tier of a stack of multiple rectangular blocks 1 or multiple inclined blocks 2 arranged adjacent to each other on the left and right sides, respectively, and prevent the multiple rectangular blocks 1 or multiple inclined blocks 2 arranged on the top tier from moving apart in the left-right direction.

[0040] This allows for the provision of fixed guards 3 that also function to prevent left-right misalignment in a slope unit 100 formed by stacking inclined blocks 2 and rectangular blocks 1 side-by-side in a front-to-back fashion. When the inclined blocks 2 and rectangular blocks 1 are manufactured by extrusion molding so that they each have the same cross section in the left-to-right direction, the fixed guards 3 also function to prevent left-to-right misalignment. The inclined blocks 2 and rectangular blocks 1 can be prevented from misaligning in the front-to-back direction by locking portions 11, 21 and from misaligning in the up-to-down direction by engaging portions 12, 22. However, when extrusion molding is used to reduce costs, the blocks each have the same cross section in the left-to-right direction, so misalignment in the left-to-right direction, which is the direction of extrusion, cannot be prevented in principle. By attaching the fixed guards 3 of the present invention to the left and right sides, not only is the risk of vehicles (e.g., transport carts, forklifts, hand trucks, wheelbarrows, etc.) traveling along the slope unit 100 reduced, but the inclined blocks 2 and rectangular blocks 1 that make up the slope unit 100 can also be prevented from misaligning in the left-to-right direction.

[0041] It is more preferable that the fixed guard 3 is colored in a conspicuous color. This improves the visibility of the end of the slope unit 100, thereby improving pedestrian safety. Furthermore, if the fixed guard 3 is painted with fluorescent or luminous paint, it can improve visibility in dark places, thereby improving pedestrian safety.

[0042] [Embodiment 2] FIG. 2 is a schematic perspective view of one embodiment of the slope unit of the present invention. The slope unit 100 of this embodiment has a connector 4. The rectangular parallelepiped block 1 and the inclined block 2 are each formed by extrusion molding in the left-right direction, and have through-holes 13 and 23 penetrating in the left-right direction, as illustrated in FIG. 8. The through-holes 13 and 23 are spaces surrounded by the top surface and side walls 14 and 24, and the bottom surface may be closed as shown, or may be open. The through-holes 13 and 23 are formed by extrusion molding to reduce the weight of the rectangular parallelepiped block 1 and the inclined block 2 while maintaining their strength.

[0043] The connector 4 passes through the through holes 23 of the inclined blocks 2 arranged on the top row to connect the fixed guard 3 attached to the left side of the left end with the fixed guard 3 attached to the right side of the right end. When the top row consists of multiple rectangular parallelepiped blocks 1, the connector 4 passes through the through holes 13 to connect the fixed guard 3 attached to the left side of the left end with the fixed guard 3 attached to the right side of the right end. This makes it possible to easily attach fixed guards that also have the function of preventing left-right misalignment of the rectangular parallelepiped blocks 1 and inclined blocks 2.

[0044] It is not necessary to connect the blocks through the through holes 23, 13 of the top inclined block 2 or rectangular parallelepiped block 1. The same effect can be achieved by connecting the blocks through the through holes 13 of the second and third rectangular parallelepiped blocks 1 and extending the fixed guard 3 to the topmost block.

[0045] A more detailed configuration example of the connector 4 will be described. FIG. 3 is an explanatory diagram showing a perspective view from above of the mounting portion of the connector 4 of one embodiment of the slope unit 100. FIG. 3 shows two inclined blocks 2 arranged in the left-right direction (also in the left-right direction in FIG. 3 ) from a top view, with fixed guards 3 attached to the left and right ends. An enlarged view of the mounting portion on the left side is circled. When connecting the left and right fixed guards 3, the connector 4 has a left bolt portion 43 that protrudes through the fixed guard 3 attached to the left side of the left end and a right bolt portion 43 that protrudes through the fixed guard 3 attached to the right side of the right end. The left and right bolt portions 43 are each tightened with a wing nut 44. The left and right bolt portions 43 are connected by a connecting portion 40. More specifically, the bolt portions 43 can be formed by forming threads on both ends of a single long rod or tube.

[0046] This makes it possible to provide a connector 4 that is easy to install. Specifically, after lining up the inclined block 2 and the rectangular parallelepiped block 1 to form a slope, the connector 4 is passed through the through holes 23, 13, and the bolt portion 43 protrudes from holes provided in the left and right fixed guards 3 and is tightened with a wing nut 44. This allows the work to be done by one person without tools. As a specific configuration for connecting the left and right fixed guards 3, in addition to the wing nut 44 introduced here, various configurations can be used, such as tightening with a bolt and nut or tightening with a ratchet belt.

[0047] The connector 4 can have various configurations. FIG. 4 is an explanatory diagram showing a schematic top view of another example of the connector 4. The connector 4 has left and right shafts 41 with bolts 43 formed at the ends, and the middle section is connected by a wire 42 (FIG. 4a). The length of the shaft 41 is approximately the same as the width of the inclined blocks 2. When the bolts 43 are pinched and the shaft 41 is inserted into the through-hole 23 from one end, the shaft 41 is pushed out to the other end of the first inclined block 2, allowing the other sections of the connector 4 to be easily pulled out. The middle section may be adjusted to the required length by connecting one or more relay shafts 45 with high nuts 46 (FIG. 4b). Alternatively, the middle section may be made of a flexible material, such as a wire 42 or other belt, that can be easily rolled or folded and bundled (FIG. 4c). Even when the slope unit 100 has a wide width and multiple inclined blocks 2 or rectangular parallelepiped blocks 1 are lined up in a row in the left-right direction, the connector 4 is not bulky and can be easily carried and stored.

[0048] A more detailed configuration example of the fixed guard 3 will be described. FIG. 7 is a schematic perspective view of one configuration example of the fixed guard 3. FIG. 7 illustrates the fixed guard 3 attached to the right end of two stacked rectangular parallelepiped blocks 1. When attached to the topmost rectangular parallelepiped block 1, the fixed guard 3 preferably has a plate-like member 30 that contacts the side wall of the rectangular parallelepiped block 1, a stabilizing portion 32 that contacts the top surface of the rectangular parallelepiped block 1, and a guard portion 31 that protrudes upward from the top surface of the rectangular parallelepiped block 1. The same applies when the topmost block is an inclined block 2. This fixed guard 3 is also attached using the bolt portion 43 and wing nut 44 of the connector 4, as described above. This enhances the impact resistance of the fixed guard 3. When the wheels of a vehicle traveling over the top surface of the rectangular parallelepiped block 1 collide with the guard portion 31, the force that tries to tilt the guard portion 31 outward is dispersed to the top surface of the rectangular parallelepiped block 1 by the stabilizing portion 32. If the guard portion 31 were formed by simply extending the plate-shaped member 30, the force tending to tilt the guard portion 31 outward due to a wheel collision would be absorbed solely by the fixed guard 3, potentially concentrating stress on the bolt portion 43 of the connector 4. Thus, providing the stabilizing portion 32 enhances impact resistance. The example shown in FIG. 7 also has the advantage of being manufactured at low cost because it can be formed by simply bending a steel plate twice. Meanwhile, the fixed guard 3 can adopt various other shapes. For example, the plate-shaped member 30 can be stabilized by attaching a member shaped to fit into the through-holes 23, 13 of the inclined block 2 or rectangular block 1. Alternatively, the guard portion 31 and stabilizing portion 32 can be formed into a box shape. This can further enhance impact resistance.

[0049] Various modified examples can be adopted for the fixed guard 3. Figures 9 to 11 are schematic perspective views showing various modified examples of the fixed guard 3. From the front, the inclined block 2 only, the inclined block 2 on top of the rectangular parallelepiped block 1, the inclined block 2 on top of the two-tiered rectangular parallelepiped block 1, the three-tiered rectangular parallelepiped block 1, and the three-tiered rectangular parallelepiped block 1 are arranged in several rows to the left, and the three stacks on the right side (the inclined block 2 on top of the two-tiered rectangular parallelepiped block 1, the three-tiered rectangular parallelepiped block 1, and the three-tiered rectangular parallelepiped block 1) are depicted.

[0050] Figure 9 shows an example in which the fixed guard 3 is attached only to the topmost inclined block 2 or rectangular parallelepiped block 1. This allows the fixed guard 3 itself to be made smaller. The inclined blocks 2 or rectangular parallelepiped blocks 1 arranged in the left-right direction on the top tier are fastened from both ends by connectors 4 to prevent left-right misalignment, but there is no mechanism to directly prevent left-right misalignment in relation to the rectangular parallelepiped block 1 below them. However, because the top tier is fastened from both ends by connectors 4 and integrated, friction with the tier below is large and left-right misalignment does not easily occur.

[0051] 10 shows an example in which three tiers of rectangular parallelepiped blocks 1 are stacked, with the plate-like members 31 of the fixed guard 3 extending from the flat part of the top tier to both ends of the bottom tier, and the bottom tier also being fastened and fixed from the left and right with connectors 4. This significantly improves the impact resistance of the fixed guard 3. It is possible to simply extend the plate-like members 31 of the fixed guard 3, or to fasten the tiers other than the bottom tier with connectors 4 in addition to the top tier, or to fasten all tiers with connectors 4.

[0052] FIG. 11 shows a modified example in which the length of the fixed guard 3 is extended to approximately twice the length of the rectangular parallelepiped block 1 in the front-to-rear direction, and two rectangular parallelepiped blocks 2 lined up in the front-to-rear direction are connected. Connecting them in the front-to-rear direction also improves impact resistance. Furthermore, it reduces the risk of the top rectangular parallelepiped block 1 being displaced in the vertical direction. The rectangular parallelepiped blocks 1 lined up in the front-to-rear direction have their engaging portions 11 meshed with each other to prevent displacement in the front-to-rear direction. However, when a heavy object passes over the slope unit 100 at high speed, an impact can cause the top rectangular parallelepiped block 1 (or inclined block 2) to bounce up, potentially disengaging the engaging portion 11. Connecting them in the front-to-rear direction reduces this risk.

[0053] The various modified examples described above can be used individually, or can be combined with each other or with other modified examples. While Figures 9 to 11 mainly describe an example in which the top layer is a rectangular parallelepiped block 1, the present invention can also be applied to an inclined block 2. Furthermore, the present invention can also be applied to the third embodiment described below.

[0054] [Embodiment 3] The slope unit 100 of the present invention utilizes the feature that the lowest inclined block 2 and rectangular parallelepiped block 1 are unlikely to shift relative to the floor surface, thereby preventing the upper inclined block 2 and rectangular parallelepiped block 1 from shifting left and right.

[0055] FIG. 5 is a schematic perspective view of a slope unit 100 according to this embodiment. The slope unit 100 is configured by stacking two inclined blocks 2 and two rectangular parallelepiped blocks 1 in the left-right direction and three in the front-to-back direction, with the rearmost row being composed of an inclined block 2 and two rectangular parallelepiped blocks 1 stacked from the top. The inclined blocks 2 and the rectangular parallelepiped blocks 1 are formed by extrusion molding in the left-right direction, and each has through-holes 23 and 13 penetrating in the left-right direction. Fixed guards 3 attached to the left side of the left end and the right side of the right end are fixed with fasteners 5, respectively. The fasteners 5 are inserted into the through-holes 23 and 13 of the attached inclined block 2 or rectangular parallelepiped block 1 to fix the fixed guards 3. When fixed, the left fixed guard 3 abuts the left side of the lowest rectangular parallelepiped block 1 (or inclined block) in the stack, and the right fixed guard 3 abuts the right side of the lowest rectangular parallelepiped block 1 (or inclined block) in the stack.

[0056] This allows the fixed guards 3 to be fixed in contact with both sides of the bottom rectangular parallelepiped block 1 or inclined block 2, preventing the top rectangular parallelepiped block or inclined block from shifting left or right. The fixed guards do not have to be attached to both sides of the bottom rectangular parallelepiped block 1 or inclined block 2. When multiple rectangular parallelepiped blocks 1 and inclined blocks 2 are stacked, the fixed guards 3 need only be attached to the right side of the right-most block and the left side of the left-most block in each row, from the bottom to the top, and may be attached to any row from the bottom to the top. Note that this embodiment assumes that the bottom rectangular parallelepiped block or inclined block has high friction when in contact with the ground or floor, making it difficult to move forward, backward, left, or right.

[0057] A specific configuration example of the fixing device 5 will be described. Fig. 6 is an explanatory diagram showing the mounting portion of the fixing device 5 from above in a see-through manner. The fixing device 5 has a bolt 50 that is inserted through the fixed guard 3 from the outside, and two blocks 51, 52 whose width can be adjusted by contacting each other at their inclined surfaces. The two blocks 51, 52 are widened by tightening the bolt 50, and come into contact with the walls 14, 24 of the through hole in the rectangular block 1 or inclined block 2, thereby fixing the fixed guard 3. In this way, simply by fixing the left and right fixed guards to one rectangular block or inclined block on each side, it is possible to prevent the rectangular blocks or inclined blocks arranged in a row in each stage from shifting left and right.

[0058] FIG. 6(a) shows the blocks 51 and 52 fastened and secured by bolt 50 and nut 55, while FIG. 6(b) shows the blocks 51 and 52 loosened and released. Blocks 51 and 52 each have through-holes 53 and 54 through which bolt 50 passes. Block 51 on the fixed guard 3 side has its flat surface facing the fixed guard 3, while block 52 on the nut 55 side has its flat surface facing the nut 55, so that their inclined surfaces are in contact with each other. Through-holes 53 and 54 are larger than the thread diameter of bolt 50. When bolt 50 and nut 55 are fastened, blocks 51 and 52 move apart vertically in FIG. 6(a) due to their inclined surfaces. Their end faces are pressed against the side walls 14 of the through-holes 13 of the rectangular parallelepiped block 1 to which they are attached, thereby securing them in place. Tightening bolt 50 acts to press the fixed guard 30 against the side of the rectangular parallelepiped block 1, securing the fixed guard 30 to the rectangular parallelepiped block 1. Even if the object of attachment is an inclined block 2 instead of a rectangular parallelepiped block 1, the fixed guard 30 can be fixed in the same manner.

[0059] Although the nuts 55 are shown in FIG. 6, the inner block 52 may be provided with tapped holes instead of through holes 54 into which the bolts 50 can be screwed.

[0060] The invention made by the inventor has been specifically described above based on an embodiment, but it goes without saying that the invention is not limited thereto and can be modified in various ways without departing from the spirit of the invention. [Explanation of symbols]

[0061] 1 rectangular block 2 Inclined Blocks 3 Fixed Guard 4 Connectors 5 Fixtures 11, 21 Engagement part 12,22 Locking part 13.23 Through holes 14,24 Side wall of through hole 30 Plate-shaped member 31 Guard section 32 Stable part 40 Connection part 41 Shaft 42 wires 43 Bolt section 44 Wing nut 45 Relay shaft 46 High Nut 50 volts 51 Outer tilt block 52 Inner tilt block 53,54 Through holes 55 Nut

Claims

1. A slope unit having a plurality of rectangular parallelepiped blocks, a plurality of inclined blocks, a fixed guard, and a connector, The plurality of rectangular parallelepiped blocks and the plurality of inclined blocks have the same width, length, and height when viewed from above, and through holes that communicate in the left-right direction, and can be arranged adjacent to each other in the front and back with their left and right end faces aligned, or can be arranged adjacent to each other in the front and back with their left and right end faces aligned, or can be arranged adjacent to each other up and down with their front, back, left, and right end faces aligned, The fixed guards are attached to the left and right ends of the topmost tier of a plurality of rectangular parallelepiped blocks or a plurality of inclined blocks arranged adjacent to each other on the left and right sides and stacked in one or more tiers, The connector connects the fixed guard attached to the left end and the fixed guard attached to the right end through through holes communicating in the left-right direction of the plurality of rectangular parallelepiped blocks or inclined blocks arranged in the top row or other rows. Slope unit.

2. In claim 1, The connector has a left bolt portion that penetrates and projects through the fixed guard attached to the left end when connecting the left and right fixed guards, and a right bolt portion that penetrates and projects through the fixed guard attached to the right end, and further has wing nuts that tighten the left and right bolt portions, respectively. Slope unit.

3. In claim 1 or claim 2, When the fixed guard is attached to a rectangular parallelepiped block or an inclined block arranged on the top tier or another tier, the fixed guard has a plate-like member that contacts the side wall of the rectangular parallelepiped block or the inclined block, a stabilizing portion that contacts the top surface of the rectangular parallelepiped block or the inclined block, and a guard portion that protrudes upward from the top surface of the rectangular parallelepiped block or the inclined block. Slope unit.

4. In claim 1, The fixed guard attached to the left end has a fixture that is inserted into a through-hole of the leftmost rectangular parallelepiped block or inclined block to fix the fixed guard, and when the fixed guard is fixed, it abuts against the left side of the lowest rectangular parallelepiped block or inclined block in the stack, The fixed guard attached to the right end has a fixture that is inserted into a through-hole in the right-end rectangular parallelepiped block or inclined block to fix the fixed guard, and when the fixed guard is fixed, it abuts against the right side of the lowest rectangular parallelepiped block or inclined block in the stack. Slope unit.

5. In claim 4, The fixing device has a bolt inserted through the fixed guard from the outside and two blocks whose width can be changed by contacting each other at their inclined surfaces, and the width of the two blocks is increased by tightening the bolt, and the blocks abut against the side walls of the through-hole of the rectangular parallelepiped block or the inclined block, thereby fixing the fixed guard. Slope unit.

Images