Slope unit

Abstract

To provide a temporary slope that is height-adjustable to accommodate various steps, easy to install by one person, and has sufficient load resistance.SOLUTION: A slope unit is constructed by combining one or more rectangular parallelepiped blocks and a plurality of fixed inclination blocks. By arranging the rectangular parallelepiped blocks and the fixed inclination blocks adjacently to each other or stacking them, a continuous inclined surface can be formed to constitute a slope. By arranging and stacking the blocks in a predetermined order, locking or engaging portions formed integrally with each block can prevent the slope from shifting forward or backward without using other blocks. In addition, a step that is smaller than the height of the fixed inclination block can be accommodated by combining it with a variable inclination block that can accommodate a variable height.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a ramp 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 or 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 does not easily cause loaded carts to slip, and that can easily be constructed to a slope of a desired height. The inclined blocks and extension blocks can be arranged adjacent to each other so that a continuous inclined surface is formed.

[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 slope equipped with selectable reinforcing members and used by bridging a stepped area. It is said that multiple types of reinforcing channels are made and selectively attached according to the usage environment to improve the strength and impact resistance of the entire slope. This portable slope is configured to improve the strength of the entire slope by selectively attaching multiple types of reinforcing channels, each of which has a recess corresponding to the shape of both the left and right edge parts of the slope plate, which is the basic member, to the side edge parts of the slope plate. The reinforcing channels include a normal U-shaped channel, a U-shaped channel with a guide piece in which the end face part is extended upward to form a guide piece for preventing the wheel from running off, and multiple types of reinforcing channels with different materials, shapes and / or plate thicknesses of the constituent plate materials of each channel, and the optimal one suited to the usage environment is selected and attached to the side edge parts of the slope plate to improve the function and / or strength of the entire slope. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2008-248477 A [Patent Document 2] Japanese Patent Application Publication No. 9-195483 [Patent Document 3] JP2018-089085A Summary of the Invention [Problem to be solved by the invention]

[0007] The temporary slope described in Patent Document 1 can be formed into various heights by combining inclined blocks and extension blocks and arranging them adjacent to each other, but in order to prevent misalignment between the inclined blocks and the 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 and a recess that fits into it (Figures 4-5 in the same document). For this reason, manufacturing costs are high, as a cutting process is required to make each block out of metal.

[0008] In the slope described in Patent Document 2, components such as the terminal slope components and the intermediate slope components are connected by fitting them together using a connecting and fixing means to prevent misalignment in the front-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-right direction, it becomes possible to form each component with the same cross-sectional shape in the left-right direction, and they can be manufactured by extrusion molding, which is inexpensive to manufacture even when made of metal. On the other hand, when manufactured by extrusion molding, the cross-sectional shape is the same in the left-right direction, so in principle it is not possible to prevent misalignment in the left-right direction.

[0009] The slope described in Patent Document 3 is not block-shaped as described above, but plate-shaped, and a U-shaped channel with guide pieces, whose end faces are extended upward to form guide pieces, is attached to both sides of the slope plate to reinforce it and prevent it from running off. This technology is based on a plate-shaped slope, and does not assume that it will be arranged front to back, left to right, and so cannot be used as a technology to prevent block displacement.

[0010] The object of the present invention is to provide a fixed guard that 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 in a front-to-back and left-to-right order to form a slope.

[0011] 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 mesh with each other when stacked vertically to prevent the blocks from coming apart in the upward direction.

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

[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 tier in which multiple rectangular blocks or multiple inclined blocks are 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. Effect of the Invention

[0016] The effects obtained by the present invention can be briefly explained as follows: In a slope unit in which a slope block and a rectangular parallelepiped block are stacked side-to-side and aligned to form a slope, when the slope and rectangular parallelepiped blocks are manufactured by extrusion molding so that they have the same cross section in the left-right direction, a fixed guard can be provided that also has the function of preventing misalignment in the left-right direction. [Brief description 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. [Diagram 2] FIG. 2 is a schematic perspective view showing one embodiment of the slope unit of the present invention. [Diagram 3] FIG. 3 is an explanatory view showing a top perspective view of a mounting portion of a connector 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. [Diagram 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 a see-through manner 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 a configuration example 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 PREFERRED EMBODIMENTS

[0018] 1. Overview of the embodiment First, a summary of representative embodiments disclosed in the present application will be described. Reference numerals in parentheses in the summary of the representative embodiments refer only to components included in the concept of the components to which they are attached.

[0019] [1] A slope unit with a fixed guard that prevents 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 engagement parts (11) that mesh with each other to prevent them from coming off in the front-rear direction when they are placed adjacent to each other in the front-rear direction, and locking parts (12) that mesh with each other to prevent them from coming off in the upward direction when they are stacked vertically.

[0021] The inclined block (2) has the same width and length as the rectangular block, and has an engagement portion (21) that engages with the engagement portion (11) of the rectangular block when placed adjacent to the front side of the rectangular block to prevent the inclined block from coming off in the front-to-rear direction, and a locking portion (22) that engages with the locking portion (12) of the rectangular block when stacked on top of the rectangular block to prevent the inclined block 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 in which multiple rectangular blocks or multiple inclined blocks are arranged adjacent to each other on the left and right 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 makes it possible to provide a fixed guard (3) that has the function of preventing left-right misalignment when the slope and rectangular blocks (2) are extruded to have the same cross section in the left-right direction in a slope unit (100) in which the slope blocks (2) and the rectangular blocks (1) are stacked in a front-rear and left-right arrangement to form a slope. In other words, a separate member that connects all the slope blocks (2) and the rectangular blocks (1) in the left-right direction to prevent the above-mentioned left-right misalignment is not required. In many practical examples, a connecting member such as a pin is attached to all the slope blocks (2) and the rectangular blocks (1) to prevent left-right misalignment, but there is a problem that the risk of forgetting to attach the pin is not low. Furthermore, there is a problem that it is difficult to check from the outside whether the pin has been forgotten to be attached when the slope unit is assembled and completed. Since the present invention simultaneously prevents left-right misalignment by attaching the fixed guard 3, the presence or absence of the fixed guard 3 attached can be checked at a glance, and the risk of forgetting to attach the fixed guard can be significantly reduced.

[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 has 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) penetrating 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 multiple 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 left-right misalignment of the rectangular parallelepiped block and the inclined block, to be attached with a simple operation.

[0026] [3] Connector for fastening the fixed guard with a wing nut (Figs. 2 to 4) In the slope unit [2], the connector has a left 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 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 in [2], the left and right fixed guards (3) can be connected by any method, such as tightening with a bolt and nut or a ratchet belt, but by using a bolt and wing nut (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-shaped member (30) that contacts the side wall of the rectangular block or inclined block when attached to the top tier or a rectangular block arranged on another tier, a stabilizing portion (32) that contacts the upper surface of the rectangular block or inclined block, and a guard portion (31) that protrudes upward from the upper surface of the rectangular block or inclined block.

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

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

[0031] This allows the fixed guard (3) to be fixed in contact with both sides of the bottommost rectangular block or inclined block, preventing the topmost rectangular block or inclined block from shifting left or right. Here, the position where the fixed guard is attached is not limited to both sides of the bottommost rectangular block or inclined block. When multiple tiers of rectangular blocks and inclined blocks are stacked, the fixed guard only needs to be attached so that it contacts the right side of the rightmost block and the left side of the leftmost block in the row lined up in the left-right direction in each tier from the bottom to the top, and the attachment point may be any tier 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) whose width can be changed by contacting each other at their inclined surfaces, and the two blocks are expanded in width by tightening with the bolt, and abut against the walls (14, 24) of the through hole of 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 stage 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 now be described in further detail.

[0035] [Embodiment 1] FIG. 1 is a schematic diagram showing a configuration example of the slope unit 100 of the present invention in a perspective view. FIG. 8 is a side view showing a configuration example of the inclined block 2 and the rectangular parallelepiped block 1. The upper side (a) is the inclined block 2, and the lower side (b) is the rectangular parallelepiped block 1. Here, for convenience, the explanation will be given assuming that the slope is viewed from the front to the back in FIG. 1. In FIG. 1, the left diagonal downward direction is called the front side, the right diagonal upward direction is called the rear side, the upper left to lower right on the paper is called the left-right direction, and the top and bottom of the paper are called the up-down direction. Therefore, FIG. 8 is a side view seen from the right side, and the left direction of FIG. 8 is called the front side, and the right direction is called the rear side. In addition, the inclined block 2 and the 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 (front-back direction on the paper).

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

[0037] The engaging parts 11, 21 will now be described. The engaging parts 11 of the rectangular parallelepiped block 1 are formed on the front face (left side in FIG. 8(b)) and rear face (right side in FIG. 8(b)). When lining up the rectangular parallelepiped blocks 1 one behind the other, if the side faces are rubbed together and slid from above to line up at the same height, the engaging parts 11 will interlock and will not come off in the front or rear direction. The same is true when lining up the inclined block 2 in front of the rectangular parallelepiped block 1. If the rear face of the inclined block 2 is rubbed against the front face of the rectangular parallelepiped block 1 and slid from above to line up at the same height, the engaging part 11 on the front face of the rectangular parallelepiped block 1 and the engaging part 21 on the rear face of the inclined block 2 will interlock and will not come off in the front or rear direction.

[0038] The locking parts 12 and 22 will be described. When the rectangular parallelepiped blocks 1 are stacked one on top of the other, the locking part 12 provided on the upper surface of the lower rectangular parallelepiped block 1 and the locking part 12 provided on the lower surface of the upper rectangular parallelepiped block 1 engage with each other, preventing them from coming off in the vertical direction. More specifically, by sliding the upper rectangular parallelepiped block 1 forward from a little behind, the locking part 12 protruding forward engages with the part of the locking part 12 provided on the upper surface of the lower rectangular parallelepiped block 1 protruding backward, preventing them from coming off in the vertical direction. Here, the expressions "will not come off" and "difficult to come off" are used interchangeably, but "difficult to come off" simply means that "will not come off" unless it is slid in the opposite direction to the direction in which it was slid when it was fitted, and there is no substantial difference between them. The same applies when the inclined block 2 is stacked on the rectangular parallelepiped block 1. The locking part 12 provided on the upper surface of the lower rectangular parallelepiped block 1 and the locking part 22 provided on the lower surface of the upper inclined block 2 engage with each other, preventing them from coming off 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 in which multiple rectangular blocks 1 or multiple inclined blocks 2 are arranged adjacent to each other on the left and right sides and stacked in one or more tiers, and prevent the multiple rectangular blocks 1 or multiple inclined blocks 2 arranged in the top tier from moving apart in the left-right direction.

[0040] This provides a fixed guard 3 that also has the function of preventing left-right misalignment when the inclined blocks 2 and the rectangular parallelepiped blocks 1 are manufactured by extrusion molding so that they each have the same cross section in the left-right direction in the slope unit 100 in which the inclined blocks 2 and the rectangular parallelepiped blocks 1 are stacked side-to-side to form a slope. The inclined blocks 2 and the rectangular parallelepiped blocks 1 can be prevented from misaligning in the front-to-back direction by the locking parts 11, 21 and from misaligning in the up-down direction by the engaging parts 12, 22, but if extrusion molding is used to reduce costs, they each have the same cross-sectional shape in the left-right direction, so in principle it is not possible to prevent misalignment in the left-right direction, which is the direction of extrusion. By attaching the fixed guards 3 of the present invention to the left and right, not only is it possible to prevent the risk of a vehicle (e.g., a transport cart, a forklift, a handlift, a one-wheeled cart, etc.) passing through the slope unit 100 from running off the track, but it is also possible to prevent the inclined blocks 2 and the rectangular parallelepiped blocks 1 that constitute the slope unit 100 from misaligning in the left-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, and improves the safety of passage. Also, by painting it with fluorescent paint or luminous paint, it is possible to improve visibility in dark places and improve the safety of passage.

[0042] [Embodiment 2] FIG. 2 is a schematic perspective view of an 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, 23 penetrating in the left-right direction, as illustrated in FIG. 8. The through holes 13, 23 are spaces surrounded by the upper surface and side walls 14, 24, and the lower surface may be closed as shown in the figure, or may be open. The through holes 13, 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 connects 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 through the through holes 23 of the multiple inclined blocks 2 arranged in the top row. When multiple rectangular parallelepiped blocks 1 are arranged in the top row, the connector 4 connects 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 through the through holes 13. This makes it possible to attach the fixed guard, which also has the function of preventing left-right misalignment of the rectangular parallelepiped block 1 and the inclined block 2, with a simple operation.

[0044] It is not necessary to connect through the through holes 23, 13 of the topmost inclined block 2 or rectangular parallelepiped block 1. The same effect can be achieved by connecting 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 the mounting portion of the connector 4 of one embodiment of the slope unit 100 in a see-through manner from above. 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 shown in a circle. 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, and 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 is protruded from holes provided in the left and right fixed guards 3 and 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 adopted, such as tightening with a bolt and nut, tightening with a ratchet belt, etc.

[0047] The connector 4 can be configured in various ways. FIG. 4 is an explanatory diagram showing a schematic top view of another example of the connector 4. The connector 4 has a shaft 41 with a bolt portion 43 formed at the end on the left and right, and is configured, for example, by connecting the middle portion with a wire 42 (FIG. 4a). The length of the shaft 41 is approximately the same as the width of the inclined block 2, and when the bolt portion 43 is pinched and the shaft 41 is inserted from one end into the through hole 23, the shaft 41 is pushed out to the other end of the first inclined block 2, and the other parts of the connector 4 can be easily pulled out. The middle portion may be adjusted to the required length by connecting one or more relay shafts 45 to each other with a high nut 46 (FIG. 4b). Alternatively, the middle portion may be configured of a flexible member that can be easily rolled or folded and bundled, such as a wire 42 or other belt (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 diagram showing an oblique 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 the fixed guard 3 is attached to the rectangular parallelepiped block 1 arranged in the topmost tier, it is preferable that the fixed guard 3 has a plate-like member 30 that contacts the side wall of the rectangular parallelepiped block 1, a stabilizing portion 32 that contacts the upper surface of the rectangular parallelepiped block 1, and a guard portion 31 that protrudes upward from the upper surface of the rectangular parallelepiped block 1. The same applies when the topmost tier is an inclined block 2. This fixed guard 3 is also attached using the bolt portion 43 and the wing nut 44 of the connector 4 in the same manner as described above. This makes it possible to strengthen the resistance of the fixed guard 3 to impact. When the wheels of a vehicle traveling on 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 plate-like member 30 is extended as it is to form the guard portion 31, the force that tends to tilt the guard portion 31 outward due to the collision of the wheel will be absorbed only by the fixed guard 3, and stress may be concentrated on the bolt portion 43 of the connector 4. In this way, by providing the stabilizing portion 32, the impact resistance can be strengthened. In addition, the example shown in FIG. 7 has the advantage that it can be manufactured at low cost because it can be formed by simply bending an iron plate twice. On the other hand, the fixed guard 3 can adopt various other shapes. For example, the plate-like member 30 can be stabilized by attaching a member shaped to fit into the through holes 23, 13 of the inclined block 2 or the rectangular parallelepiped block 1. In addition, for example, the guard portion 31 and the stabilizing portion 32 can be formed into a box shape. These can further strengthen the 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, only the inclined block 2, the inclined block 2 on a rectangular block 1, the inclined block 2 on two levels of rectangular blocks 1, the rectangular block 1 in three levels, and the rectangular block 1 in three levels are arranged in several rows to the left, and the three stacks on the right side (the inclined block 2 on the two levels of rectangular blocks 1, the rectangular block 1 in three levels, and the rectangular block 1 in three levels) are drawn.

[0050] Figure 9 shows an example where the fixed guard 3 is attached only to the topmost inclined block 2 or rectangular parallelepiped block 1. The fixed guard 3 itself can be made smaller. The inclined blocks 2 or rectangular parallelepiped blocks 1 arranged in the left-right direction on the topmost 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. However, because the topmost tier is integrated by being fastened from both ends by connectors 4, 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 member 31 of the fixed guard 3 extended from the flat part of the top tier to both ends of the bottom tier, and the bottom tier is also 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 member 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 about twice the length of the rectangular parallelepiped block 1 in the front-rear direction, and two rectangular parallelepiped blocks 2 arranged side by side in the front-rear direction are connected. Connecting them in the front-rear direction also improves impact resistance. Furthermore, it is possible to reduce the risk of the rectangular parallelepiped block 1 arranged in the top row being displaced in the vertical direction. The rectangular parallelepiped blocks 1 arranged in the front-rear direction have their engagement parts 11 meshed with each other to prevent displacement in the front-rear direction, but when a heavy object passes through the slope unit 100 at high speed, there is a possibility that the top rectangular parallelepiped block 1 (or the inclined block 2) will be thrown up by an impact, causing the engagement part 11 to come off. Connecting them in the front-rear direction can reduce such a risk.

[0053] The above-mentioned various modified examples can be adopted individually, or can be adopted in combination with each other or in combination with other modified examples. Also, while Fig. 9 to Fig. 11 mainly explain an example in which the topmost stage 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 embodiment 3 described below.

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

[0055] FIG. 5 is a schematic diagram showing a perspective view of the slope unit 100 of this embodiment. The slope unit 100 is configured such that two inclined blocks 2 and rectangular parallelepiped blocks 1 are arranged in the left-right direction and three in the front-rear direction, and the rearmost row is configured such that the inclined blocks 2 and two rectangular parallelepiped blocks 1 are stacked from the top. The inclined blocks 2 and the rectangular parallelepiped blocks 1 are formed by extrusion molding extruded in the left-right direction, and each has through holes 23, 13 penetrating in the left-right direction. The fixed guards 3 attached to the left side of the left end and the right side of the right end are fixed by fixtures 5. The fixtures 5 are inserted into the through holes 23, 13 of the inclined block 2 or rectangular parallelepiped block 1 to be attached and fix the fixed guards 3. The left fixed guard 3 is configured to contact the left side of the lowest rectangular parallelepiped block 1 (or inclined block) in the stack when fixed, and the right fixed guard 3 is configured to contact the right side of the lowest rectangular parallelepiped block 1 (or inclined block) in the stack when fixed.

[0056] As a result, the fixed guard 3 is fixed in a state of abutting against both sides of the rectangular parallelepiped block 1 or inclined block 2 in the lowest stage, and the rectangular parallelepiped block or inclined block in the highest stage can be prevented from shifting left and right. Here, the position where the fixed guard is attached is not limited to both sides of the rectangular parallelepiped block 1 or inclined block 2 in the lowest stage. When a plurality of stages of rectangular parallelepiped blocks 1 and inclined blocks 2 are stacked, the fixed guard 3 only needs to be attached so as to be in contact with the right side of the rightmost block and the left side of the leftmost block in each stage arranged in the left-right direction from the bottommost stage to the topmost stage, and the attachment location may be any stage from the bottommost stage to the topmost stage. Note that in this embodiment, it is assumed that the rectangular parallelepiped block or inclined block in the lowest stage has a large friction when it comes into contact with the ground or floor surface and is difficult to move in the front-rear and left-right directions.

[0057] A specific configuration example of the fixing device 5 will be described. Fig. 6 is an explanatory view 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 changed by contacting each other at their inclined surfaces, and the two blocks 51 and 52 are widened by being tightened with the bolt 50, and come into contact with the walls 14, 24 of the through hole of the rectangular parallelepiped block 1 or the inclined block 2 to fix the fixed guard 3. In this way, simply by fixing the left and right fixed guards to one rectangular parallelepiped block or inclined block on each side, it is possible to prevent the rectangular parallelepiped blocks or inclined blocks arranged in a row in each stage from shifting in the left and right direction.

[0058] FIG. 6(a) shows a state where the blocks are fastened and fixed by the bolt 50 and nut 55, and FIG. 6(b) shows a state where the bolt 50 and nut 55 are loosened and released. The blocks 51 and 52 have through holes 53 and 54 through which the bolt 50 passes, respectively. The block 51 on the fixed guard 3 side has a flat surface on the side that contacts the fixed guard 3, and the block 52 on the nut 55 side has a flat surface on the side that contacts the nut 55, and they are arranged so that their inclined surfaces contact each other. The through holes 53 and 54 are opened larger than the thickness of the thread of the bolt 50. When the bolt 50 and nut 55 are fastened, the blocks 51 and 52 move in a direction away from each other in the vertical direction of FIG. 6(a) due to the inclined surfaces, and are fixed by pressing their end faces against the side walls 14 of the through holes 13 of the rectangular parallelepiped block 1 to which they are attached. The fastening of the bolt 50 acts in a direction that presses the fixed guard 30 against the side surface of the rectangular parallelepiped block 1, and the fixed guard 30 is fixed to the rectangular parallelepiped block 1. Even if the object to be attached 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 a nut 55 is illustrated in FIG. 6, the inner block 52 may be provided with a tapped thread hole, instead of the through hole 54, into which the bolt 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. Cuboid block 2 Tilt Block 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 Wire 43 Bolt section 44 Wing Nut 45 Intermediate shaft 46 High Nut 50 Volts 51 Outer tilt block 52 Inner Slope Block 53,54 Through holes 55 Nut

Claims

1. A slope unit having a plurality of rectangular parallelepiped blocks, a plurality of inclined blocks, and a fixed guard, The rectangular parallelepiped blocks each have an engagement portion that engages with the other when the blocks are arranged adjacent to each other in the front-rear direction, and a locking portion that engages with the other when the blocks are stacked in the vertical direction to prevent the blocks from coming off in the upward direction, 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 the inclined block is disposed 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 the inclined block is stacked on top of the rectangular parallelepiped block to prevent the inclined block from coming off in the upward direction, The fixed guards are attached to the left side of the left end and the right side of the right end of the topmost tier in which a plurality of rectangular parallelepiped blocks or a plurality of inclined blocks are arranged adjacent to each other on the left and right and stacked in one or more tiers, and prevent the plurality of rectangular parallelepiped blocks or the plurality of inclined blocks arranged in the topmost tier from separating in the left and right directions. Slope unit.

2. In claim 1, The slope unit further includes a connector, Each of the rectangular parallelepiped block and the inclined block is formed by extrusion molding in a left-right direction and has a through hole penetrating in the left-right direction, The connector connects the fixed guard attached to the left side of the left end and the fixed guard attached to the right side of the right end through the through holes of the rectangular parallelepiped blocks or inclined blocks arranged in the top row or other rows. Slope unit.

3. In claim 2, The connector has a left bolt portion that penetrates and 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 bolt portion that penetrates and protrudes through the fixed guard attached to the right side of the right end, and further has wing nuts that tighten the left and right bolt portions, respectively. Slope unit.

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

5. In claim 1, Each of the rectangular parallelepiped block and the inclined block is formed by extrusion molding in a left-right direction and has a through hole penetrating in the left-right direction, the fixed guard attached to the left side of the left end has a fastener that is inserted into the through hole of the left-end rectangular parallelepiped block or inclined block to fix the fixed guard, and when the fixed guard is 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 that is inserted into the through hole of 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 bottommost rectangular parallelepiped block or inclined block. Slope unit.

6. In claim 5, The fixing device has a bolt that is 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 expanded 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 to fix the fixed guard. Slope unit.

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