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 slope unit temporarily installed at a step portion in a building, a passage, particularly at a construction site.

Background Art

[0002] A temporary slope for getting over a step formed in a building or a passage may be provided with a side guard for preventing derailment.

[0003] Patent Document 1 discloses a temporary slope in which a loaded trolley is not slippery, has good handleability, and can easily form a slope of a desired height. The inclined block and the extension block can be arranged adjacent to each other so that the inclined surfaces are continuously formed.

[0004] Patent Document 2 discloses a combined slope configured to be able to cope with various heights of a combined slope member used to enable a wheelchair or the like to get over a step at the entrance of a bathroom or a room. The terminal slope member and one or more intermediate slope members are combined, and various heights are corresponded to by the number of the intermediate slope members.

[0005] Patent Document 3 discloses a portable slope that is provided with selectable reinforcing members and is used by spanning across a stepped location. It is said that a plurality of types of reinforcing channels are manufactured and selectively attached according to the usage environment to improve the strength, impact resistance, etc. of the entire slope. This portable slope is configured to improve the strength of the entire slope by selectively attaching a plurality of types of reinforcing channels formed with recesses corresponding to the left and right side edge shapes of the slope plate serving as the basic member to the side edge portions of the slope plate. The reinforcing channels include, in addition to a normal U-shaped channel, a U-shaped channel with a guide piece formed by extending the end face portion upward to form a guide piece for preventing derailment, or are composed of a plurality of types with different materials, shapes, and / or plate thicknesses of the constituent plate materials of each channel, and the optimal one suitable for the usage environment is selected and attached to the side edge portion of the slope plate to improve the function and / or strength of the entire slope.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Patent Document 3

Summary of the Invention

Problems to be Solved by the Invention

[0007] The provisional slope described in Patent Document 1 can form various heights by combining and arranging inclined blocks and additional blocks adjacent to each other. However, in order to prevent the front-to-back, left-to-right, and up-and-down misalignment between the inclined blocks, the additional blocks, and between the additional blocks themselves, a connecting mechanism is provided to fit the blocks together and restrict the lateral movement. The connecting mechanism is realized by a combination of a hammer-head-shaped convex portion and a concave portion into which it fits (FIGS. 4-5 of the same document). Therefore, when each block is made of metal, a cutting process is required, resulting in high manufacturing costs.

[0008] In the slope described in Patent Document 2, misalignment in the front-to-back direction is prevented by providing connection fixing means to fit and join between members such as terminal slope members and intermediate slope members. By configuring each member including the connection fixing means with only dovetail grooves and convex shapes having the same cross-section in the left-to-right direction, it becomes possible to form each member with the same cross-sectional shape in the left-to-right direction, and even when made of metal, the manufacturing cost is low and it can be manufactured by extrusion molding. On the other hand, when manufactured by extrusion molding, since the cross-sectional shape is the same in the left-to-right direction, it is not possible to prevent misalignment in the left-to-right direction in principle.

[0009] The slope described in Patent Document 3 is not in the form of a block as described above, but is in the form of a plate. By attaching a U-shaped channel with guide pieces, in which the end face portion is extended upward to form guide pieces, to both side faces of the slope plate, reinforcement and derailment prevention are achieved. This technology is premised on a plate-shaped slope and may not assume arranging them in the front-to-back, left-to-right, and up-and-down directions, and thus cannot be diverted to a technology for preventing block misalignment.

[0010] An object of the present invention is to provide a fixing guard having a function of preventing left-to-right misalignment when an inclined block and a rectangular parallelepiped block are arranged and stacked in the front-to-back, left-to-right, and up-and-down directions to form a slope in a slope unit, and when each of the inclined and rectangular parallelepiped blocks is manufactured by extrusion molding so as to have the same cross-section in the left-to-right direction.

[0011] Means for solving such problems will be described below, and other problems and novel features will become apparent from the description of this specification and the attached drawings.

Means for Solving the Problems

[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 block has an engaging portion that engages with each other when arranged adjacent to each other in the front-rear direction, and a locking portion that meshes with each other when stacked in the vertical direction to prevent upward disengagement.

[0014] The inclined block has the same width and length as the rectangular parallelepiped block, an engaging portion that engages with the engaging portion of the rectangular parallelepiped block when arranged adjacent to the front side of the rectangular parallelepiped block, and a locking portion that meshes with the locking portion of the rectangular parallelepiped block when stacked on the rectangular parallelepiped block to prevent upward disengagement.

[0015] The fixed guard is attached to the left side of the left end and the right side of the right end of the uppermost stage when a plurality of rectangular parallelepiped blocks or a plurality of inclined blocks are arranged adjacent to each other left and right and stacked in one or more stages, and suppresses the separation of the plurality of rectangular parallelepiped blocks or the plurality of inclined blocks arranged in the uppermost stage in the left-right direction.

Effects of the Invention

[0016] The effects obtained by the present invention are briefly described as follows. That is, in a slope unit that forms a slope by arranging and stacking inclined blocks and rectangular parallelepiped blocks in the front, rear, left, and right directions, when each of the inclined and rectangular parallelepiped blocks is manufactured by extrusion molding so as to have the same cross section in the left-right direction, a fixed guard having a function of preventing displacement in the left-right direction can be provided.

Brief Description of the Drawings

[0017]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Figure 11

DETAILED DESCRIPTION OF THE INVENTION

[0018] 1. Outline of Embodiment First, an outline of a typical embodiment disclosed in the present application will be described. The reference numerals in the drawings referred to in the outline description of the typical embodiment with parentheses are merely examples of those included in the concept of the components to which they are attached.

[0019] 〔1〕Slope unit having a fixed guard with a function of preventing left - right displacement (FIGS. 1 to 3, FIG. 8) A typical embodiment disclosed in the present 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), which is configured as follows.

[0020] The rectangular parallelepiped block (1) has an engaging portion (11) that prevents disengagement in the front-rear direction when adjacent to each other in the front-rear direction, and a locking portion (12) that prevents disengagement in the upward direction when stacked on top of each other in the vertical direction.

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

[0022] The fixed guard (3) is attached to the left side of the left end and the right side of the right end of the uppermost stage when a plurality of rectangular parallelepiped blocks or a plurality of inclined blocks are arranged adjacent to each other left and right and stacked in one or more stages, and suppresses the separation of the plurality of rectangular parallelepiped blocks or the plurality of inclined blocks arranged in the uppermost stage in the left-right direction.

[0023] Thus, in a slope unit (100) that forms a slope by arranging and stacking inclined blocks (2) and rectangular parallelepiped blocks (1) in the front-back, left-right directions, when the inclined and rectangular parallelepiped blocks are manufactured by extrusion molding so that each has the same cross-section in the left-right direction, a fixing guard (3) having a function of preventing displacement in the left-right direction can be provided. In other words, in order to prevent the above-mentioned displacement in the left-right direction, there is no need for another member to connect all the inclined blocks (2) and rectangular parallelepiped blocks (1) in the left-right direction. In many practical examples, connecting members such as pins are attached to all the inclined blocks (2) and rectangular parallelepiped blocks (1) to prevent displacement in the left-right direction, but there is a problem that the risk of forgetting to attach the pins is not low. Furthermore, forgetting to attach this pin has a problem that it is difficult to confirm from the appearance when the slope unit is assembled and completed. Since the present invention prevents left and right displacements simultaneously by attaching the fixing guard 3, the presence or absence of attachment of the fixing guard 3 can be confirmed at a glance, and the risk of forgetting to attach it can be significantly reduced.

[0024] 〔2〕Connect the left and right fixing guards through the through holes of the blocks (Figs. 2 to 4) In the slope unit (100) of 〔1〕, the slope unit further has a connector (4). Each of the rectangular parallelepiped block and the inclined block is formed by extrusion molding extruded in the left-right direction, and has through holes (13, 23) penetrating in the left-right direction (Fig. 8). The connector connects the fixing guard (3) attached to the left side of the left end and the fixing guard (3) attached to the right side of the right end through the through holes (13, 23) of the plurality of rectangular parallelepiped blocks (1) or inclined blocks (2) arranged in the uppermost stage or other stages.

[0025] Thereby, a fixing guard having a function of preventing displacement in the left-right direction of the rectangular parallelepiped block and the inclined block can be attached by a simple operation.

[0026] 〔3〕A connector for tightening the fixing guard with a wing nut (Figs. 2 to 4) In the slope unit of [2], when connecting the left and right fixed guards, the connector has a left bolt portion (43) that protrudes through the fixed guard attached to the left side of the left end, and a right bolt portion (43) that protrudes through the fixed guard attached to the right side of the right end, and further has a wing nut (44) for tightening the left and right bolt portions respectively.

[0027] Thereby, a connector with simple installation work can be provided. In the connector (4) of the slope unit of [2], when connecting the left and right fixed guards (3), it can be arbitrarily done by tightening with bolts and nuts, tightening with a ratchet belt, etc., but by using bolts and wing nuts (44), it can be easily installed without the need for tools.

[0028] 〔4〕Structure of the fixed guard (Figure 7) In the slope unit of [2] or [3], when the fixed guard is attached to the rectangular parallelepiped block or inclined block arranged in the uppermost stage or other stages, it has a plate-like member (30) in contact with the side wall of the rectangular parallelepiped block or inclined block, a stabilizing portion (32) in contact with the upper surface of the rectangular parallelepiped block or inclined block, and a guard portion (31) protruding upward from the upper surface of the rectangular parallelepiped block or inclined block.

[0029] Thereby, the resistance of the fixed guard (3) to impact can be enhanced.

[0030] 〔5〕Contact the lowermost block to prevent lateral displacement (Figure 5, Figure 6) In the slope unit of [1], each of the rectangular parallelepiped block and the inclined block is formed by extrusion in the left-right direction, and has 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 fixture (5) inserted into the through hole of the rectangular parallelepiped block or the inclined block at the left end to fix the fixed guard. When the fixed guard is fixed, it abuts against the left side of the lowermost stacked rectangular parallelepiped block or inclined block. The fixed guard attached to the right side of the right end has a fixture (5) inserted into the through hole of the rectangular parallelepiped block or the inclined block at the right end to fix the fixed guard. When the fixed guard is fixed, it abuts against the right side of the lowermost stacked rectangular parallelepiped block or inclined block.

[0031] Thereby, the fixed guard (3) is fixed in a state of abutting against both side surfaces of the lowermost rectangular parallelepiped block or inclined block, and the uppermost rectangular parallelepiped block or inclined block can be prevented from shifting left and right. Here, the position where the fixed guard is attached is not limited to both side surfaces of the lowermost rectangular parallelepiped block or inclined block. When a plurality of stages of rectangular parallelepiped blocks and inclined blocks are stacked, the fixed guard may be attached so as to contact the right side of the block at the right end and the left side of the block at the left end in the columns arranged in the left-right direction at each stage from the lowermost stage to the uppermost stage, and the attachment position may be any stage from the lowermost stage to the uppermost stage.

[0032] 〔6〕Configuration example of the fixture (Fig. 6) In the slope unit of [5], the fixture has a bolt (50) inserted through from the outside of the fixed guard, and two blocks (51, 52) whose widths are made variable by contacting each other on the inclined surfaces. The two blocks are widened in width by being tightened with the bolt, and abut against the walls (14, 24) of the through holes of the rectangular parallelepiped block or the inclined block to fix the fixed guard.

[0033] In this way, by simply fixing the left and right fixed guards to at least one rectangular block or inclined block on each of the left and right sides, it is possible to prevent the rectangular blocks or inclined blocks arranged in a row at each stage from shifting in the left-right direction.

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

[0035] 〔Embodiment 1〕 FIG. 1 is a schematic perspective view showing a configuration example of the slope unit 100 of the present invention. FIG. 8 is a side view showing a configuration example of the inclined block 2 and the rectangular block 1. The upper side (a) is the inclined block 2, and the lower side (b) is the rectangular block 1. Here, for convenience, it will be described on the assumption that in FIG. 1, it is viewed from the direction in which the slope rises from the front to the back. In FIG. 1, the left diagonally downward direction is referred to as the front side, the right diagonally upward direction is referred to as the rear side, the left-right direction is from the upper left to the lower right of the paper surface, and the up-down direction of the paper surface is referred to as the up-down direction. Therefore, FIG. 8 is a side view seen from the right side, and the left direction in FIG. 8 will be referred to as the front side and the right direction as the rear side. In addition, the inclined block 2 and the rectangular block 1 illustrated in FIG. 8 are illustrated as being manufactured by extrusion molding so that each has the same cross section in the left-right direction (the front-rear direction of the paper surface).

[0036] The rectangular block 1 has an engaging portion 11 that prevents the blocks from disengaging in the front-rear direction by engaging with each other when arranged adjacent to each other in the front-rear direction (the left-right direction in the figure), and a locking portion 12 that prevents the blocks from disengaging upward by engaging with each other when stacked in the up-down direction. The inclined block 2 has the same width and length as the rectangular block 1. That is, the inclined block 2 fits exactly on top of the rectangular block 1. The inclined block 2 has an engaging portion 21 that prevents the block from disengaging in the front-rear direction by engaging with the engaging portion 11 of the rectangular block 1 when arranged adjacent to the front side of the rectangular block 1, and a locking portion 22 that prevents the block from disengaging upward by engaging with the locking portion 12 of the rectangular block 1 when stacked on the rectangular block 1.

[0037] The engaging portions 11 and 21 will be described. The engaging portion 11 of the rectangular parallelepiped block 1 is formed on the front surface (the left side in FIG. 8(b)) and the rear surface (the right side in FIG. 8(b)). When the rectangular parallelepiped blocks 1 are arranged in the front-rear direction, when the side surfaces are slid against each other and stacked from above to the same height, the engaging portions 11 engage with each other and cannot come off in the front-rear direction. The same applies when the inclined block 2 is arranged on the front side of the rectangular parallelepiped block 1. When the rear surface of the inclined block 2 is slid against the front surface of the rectangular parallelepiped block 1 from above and stacked to the same height, the engaging portion 11 on the front surface of the rectangular parallelepiped block 1 and the engaging portion 21 on the rear surface of the inclined block 2 engage with each other and cannot come off in the front-rear direction.

[0038] The locking portions 12 and 22 will be described. When the rectangular parallelepiped blocks 1 are stacked vertically, the locking portion 12 provided on the upper surface of the lower rectangular parallelepiped block 1 and the locking portion 12 provided on the lower surface of the upper rectangular parallelepiped block 1 engage with each other and cannot come off in the vertical direction. More specifically, by sliding the upper rectangular parallelepiped block 1 slightly forward from the rear, the locking portion 12 protruding forward engages with the portion protruding rearward of the locking portion 12 provided on the upper surface of the lower rectangular parallelepiped block 1, making it difficult to come off in the vertical direction. Here, the expressions "cannot come off" and "difficult to come off" are used interchangeably, but it only means that it is expressed as "difficult to come off" because it cannot come off in the direction opposite to the sliding direction when fitting, and there is no substantial difference. The same applies when the inclined block 2 is stacked on the rectangular parallelepiped block 1. The locking portion 12 provided on the upper surface of the lower rectangular parallelepiped block 1 and the locking portion 22 provided on the lower surface of the upper inclined block 2 engage with each other and cannot come off in the vertical direction.

[0039] The fixed guard 3 is attached to the left side of the left end and the right side of the right end of the uppermost stage where a plurality of rectangular parallelepiped blocks 1 or a plurality of inclined blocks 2 are arranged adjacent to each other on the left and right and stacked in one or more stages, suppressing the separation of the plurality of rectangular parallelepiped blocks 1 or a plurality of inclined blocks 2 arranged in the uppermost stage in the left-right direction.

[0040] Thus, in the slope unit 100 that forms a slope by arranging and stacking the inclined block 2 and the rectangular parallelepiped block 1 in the front-back, left-right directions, when the inclined block 2 and the rectangular parallelepiped block 1 are manufactured by extrusion molding so that each has the same cross-section in the left-right direction, a fixed guard 3 can be provided that also has a function of preventing displacement in the left-right direction. The inclined block 2 and the rectangular parallelepiped block 1 can suppress displacement in the front-back direction with the locking portions 11, 21 and displacement in the up-down direction with the engaging portions 12, 22. However, if extrusion molding is adopted for cost reduction, since each has the same cross-sectional shape in the left-right direction, displacement in the left-right direction, which is the extrusion direction, cannot be suppressed in principle. By attaching the fixed guard 3 of the present invention to the left and right, not only can the risk of a vehicle (for example, a transport cart, a forklift, a hand lift, a unicycle, etc.) passing through the slope unit 100 from derailing be suppressed, but it can also have a function of preventing the inclined block 2 and the rectangular parallelepiped block 1 constituting the slope unit 100 from shifting in the left-right direction.

[0041] Note that it is more preferable that the fixed guard 3 is colored in a conspicuous color. The visibility of the end of the slope unit 100 can be improved, and the safety of passage can be improved. Also, if a fluorescent paint or a luminous paint is applied, the visibility in a dark place can be improved, and the safety of passage can be improved.

[0042] 〔Embodiment 2〕 FIG. 2 is a schematic perspective view showing an embodiment of the slope unit of the present invention. The slope unit 100 of this embodiment has a coupler 4. Each of the rectangular parallelepiped block 1 and the inclined block 2 is formed by extrusion molding extruded in the left-right direction, and has 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 the side walls 14, 24, and the lower surface may be closed or open as illustrated. The through holes 13, 23 are formed by extrusion molding for weight reduction while maintaining the strength of the rectangular parallelepiped block 1 and the inclined block 2.

[0043] The connector 4 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 23 of the plurality of inclined blocks 2 arranged in the uppermost stage. When a plurality of rectangular parallelepiped blocks 1 are arranged in the uppermost stage, 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 are connected through the through holes 13 thereof. Thereby, a fixed guard having a function of preventing the left - right displacement of the rectangular parallelepiped block 1 and the inclined block 2 can be attached by a simple operation.

[0044] It is not necessarily required to connect through the through holes 23, 13 of the inclined block 2 or the rectangular parallelepiped block 1 in the uppermost stage. If the connection is made through the through holes 13 of the rectangular parallelepiped blocks 1 in the second and third stages and the fixed guard 3 is extended to the uppermost stage, the same operational effects can be achieved.

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

[0046] This makes it possible to provide a simple coupler 4 for the installation work. Specifically, after arranging the inclined block 2 and the rectangular parallelepiped block 1 to form a slope, the coupler 4 is passed through the through holes 23 and 13, and the bolt portion 43 is protruded from the holes provided in the left and right fixed guards 3 and tightened with a wing nut 44. As a result, even one person can work without tools. As a specific configuration for connecting the left and right fixed guards 3, various configurations such as tightening with bolts and nuts, and tightening with a ratchet belt can be adopted in addition to the wing nut 44 introduced here.

[0047] The coupler 4 can have various configurations. FIG. 4 is an explanatory diagram schematically showing another configuration example of the coupler 4 from above. It is provided with shafts 41 having bolt portions 43 formed at both ends on the left and right, and for example, the intermediate portion is connected by a wire 42 (FIG. 4a). The length of the shaft 41 is set to be approximately the same as the width of the inclined block 2. When the shaft 41 is inserted into the through hole 23 from one end by grasping the bolt portion 43, the shaft 41 is pushed out from the other end of the first inclined block 2, and the other parts of the coupler 4 should be configured to be easily pulled out. The intermediate portion may be adjusted to the required length by connecting one or more relay shafts 45 with high nuts 46 (FIG. 4b). Alternatively, the intermediate portion may be composed of a flexible member such as a wire 42, or other belts that can be easily rolled up or folded and bundled (FIG. 4c). Even when the width of the slope unit 100 is wide and multi-stage inclined blocks 2 or rectangular parallelepiped blocks 1 are arranged in a row in the left-right direction, the coupler 4 does not take up much space and can facilitate carrying and storage.

[0048] A more detailed configuration example of the fixed guard 3 will be described. FIG. 7 is a schematic diagram showing a configuration example of the fixed guard 3 in perspective. 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 at the uppermost stage, it preferably has a plate-like member 30 in contact with the side wall of the rectangular parallelepiped block 1, a stabilizing portion 32 in contact with the upper surface of the rectangular parallelepiped block 1, and a guard portion 31 protruding upward from the upper surface of the rectangular parallelepiped block 1. The same applies when the uppermost stage is the inclined block 2. This fixed guard 3 is also attached using the bolt portion 43 and the wing nut 44 of the coupler 4 in the same manner as described above. Thereby, the resistance of the fixed guard 3 to impact can be enhanced. When the wheel of a vehicle passing over the upper surface of the rectangular parallelepiped block 1 collides with the guard portion 31, the force attempting to knock the guard portion 31 outward is dispersed to the upper surface of the rectangular parallelepiped block 1 by the stabilizing portion 32. If the plate-like member 30 is directly extended to form the guard portion 31, the force attempting to knock the guard portion 31 outward due to the collision of the wheel will be absorbed only by the fixed guard 3, and there is a risk of stress concentration on the bolt portion 43 of the coupler 4. Thus, by providing the stabilizing portion 32, the impact resistance can be enhanced. Also, the example shown in FIG. 7 has the advantage that it can be manufactured at low cost in that 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, a member shaped to fit into the through holes 23, 13 of the inclined block 2 or the rectangular parallelepiped block 1 can be attached to the plate-like member 30 for stabilization. Also, for example, the guard portion 31 and the stabilizing portion 32 can be formed in a box shape. By these means, it is also possible to further enhance the impact resistance.

[0049] Regarding the fixed guard 3, various modifications can be adopted. FIGS. 9 to 11 are schematic diagrams showing various modifications of the fixed guard 3 perspective. In order from the front direction, only the inclined block 2, the inclined block 2 on the rectangular parallelepiped block 1, the inclined block 2 on the two-stage rectangular parallelepiped block 1, the three-stage rectangular parallelepiped block 1, and the three-stage rectangular parallelepiped block 1 are arranged in several columns in the left direction. The rightmost three stacks (the inclined block 2 on the two-stage rectangular parallelepiped block 1, the three-stage rectangular parallelepiped block 1, and the three-stage rectangular parallelepiped block 1) are drawn.

[0050] FIG. 9 is an example in which the fixed guard 3 is attached only to the uppermost inclined block 2 or rectangular parallelepiped block 1. The fixed guard 3 itself can be miniaturized. The inclined block 2 or rectangular parallelepiped block 1 arranged in the left-right direction at the uppermost stage is tightened from both ends by the coupler 4 to suppress the displacement in the left-right direction. On the other hand, in relation to the rectangular parallelepiped block 1 below it, there is no mechanism to directly suppress the displacement in the left-right direction. However, since the uppermost stage is tightened and integrated from both ends by the coupler 4, the friction between the uppermost stage and the lower stage is large, and the left-right displacement does not easily occur.

[0051] FIG. 10 is an example in which the plate-like member 31 of the fixed guard 3 is extended from the flat part of the uppermost stage to both ends of the lowermost stage with three-stage rectangular parallelepiped blocks 1 stacked, and the lowermost stage is also tightened and fixed from the left and right by the coupler 4. Thereby, the impact resistance of the fixed guard 3 can be significantly improved. Simply extending the plate-like member 31 of the fixed guard 3 may be sufficient, or in addition to the uppermost stage, the stages other than the lowermost stage may be fixed with the coupler 4, or all the stages may be fixed with the coupler 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-rear direction, and two rectangular parallelepiped blocks 2 arranged in the front-rear direction are connected. By connecting them in the front-rear direction, the impact resistance can also be improved. Furthermore, the risk of the rectangular parallelepiped block 1 arranged at the uppermost stage shifting in the vertical direction can be suppressed. The rectangular parallelepiped blocks 1 arranged in the front-rear direction have their engaging portions 11 meshed with each other to suppress the displacement in the front-rear direction. However, when a heavy object passes through the slope unit 100 at high speed, there is a possibility that the rectangular parallelepiped block 1 (or the inclined block 2) at the uppermost stage may be bounced up by the impact and the engaging portion 11 may become disengaged. By connecting them in the front-rear direction, such a risk can be suppressed.

[0053] For the various modified examples as described above, in addition to adopting each of them, they can be combined with each other or combined with other modified examples. Also, FIGS. 9 to 11 have been described mainly with an example in which the uppermost stage is the rectangular parallelepiped block 1, but it can also be applied to the inclined block 2. Furthermore, it can also be applied to Embodiment 3 described later.

[0054] 〔Embodiment 3〕 The slope unit 100 of the present invention can prevent the upper inclined block 2 and the rectangular parallelepiped block 1 from shifting in the left-right direction by utilizing the feature that the lowermost inclined block 2 and the rectangular parallelepiped block 1 are difficult to shift with respect to the floor surface.

[0055] FIG. 5 is a schematic perspective view showing the slope unit 100 of the present embodiment. The slope unit 100 is configured by arranging two rectangular parallelepiped blocks 1 and two inclined blocks 2 in the left - right direction and three in the front - rear direction, and in the rearmost row, the inclined block 2 and two rectangular parallelepiped blocks 1 are stacked from the top. The inclined block 2 and the rectangular parallelepiped block 1 are formed by extrusion molding extruded in the left - right direction, and each has through - holes 23 and 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 respectively. The fixture 5 is inserted into the through - holes 23 and 13 of the inclined block 2 or the rectangular parallelepiped block 1 to which it is attached to fix the fixed guard 3. When the left fixed guard 3 is fixed, it is in contact with the left side of the lowermost rectangular parallelepiped block 1 (or inclined block) in the stacked state, and when the right fixed guard 3 is fixed, it is configured to be in contact with the right side of the lowermost rectangular parallelepiped block 1 (or inclined block) in the stacked state.

[0056] Thereby, the fixed guard 3 is fixed in a state of abutting against both side surfaces of the lowermost rectangular parallelepiped block 1 or the inclined block 2, and it is possible to prevent the uppermost rectangular parallelepiped block or the inclined block from shifting left and right. Here, the position where the fixed guard is attached is not limited to both side surfaces of the lowermost rectangular parallelepiped block 1 or the inclined block 2. When a plurality of stages of rectangular parallelepiped blocks 1 and inclined blocks 2 are stacked, the fixed guard 3 may be attached so as to be in contact with the right side of the block at the right end and the left side of the block at the left end of the columns arranged in the left - right direction in each stage from the lowermost stage to the uppermost stage, and the attachment position may be any stage from the lowermost stage to the uppermost stage. In this embodiment, it is assumed that the lowermost rectangular parallelepiped block or the inclined block has a large friction due to contact with the ground or the floor surface and is difficult to move in the front - rear, left - right directions.

[0057] A specific configuration example of the fixture 5 will be described. FIG. 6 is an explanatory view showing the mounting portion of the fixture 5 in a perspective view from above. The fixture 5 has a bolt 50 that penetrates and is inserted from the outside of the fixed guard 3, and two blocks 51 and 52 whose widths are variable by contacting each other on inclined surfaces. These two blocks 51 and 52 are tightened by the bolt 50 to widen the width, and contact the walls 14 and 24 of the through holes of the rectangular parallelepiped block 1 or the inclined block 2 to fix the fixed guard 3. Thereby, by fixing the left and right fixed guards to one rectangular parallelepiped block or inclined block on each side respectively, it is possible to prevent the rectangular parallelepiped blocks or inclined blocks arranged in a row at each stage from shifting in the left - right direction.

[0058] FIG. 6(a) shows a state where it is tightened and fixed by the bolt 50 and the nut 55, and (b) shows a state where the bolt 50 and the nut 55 are loosened and released. The blocks 51 and 52 each have through holes 53 and 54 through which the bolt 50 passes. The block 51 on the fixed guard 3 side is arranged such that its flat surface contacts the fixed guard 3, and the block 52 on the nut 55 side is arranged such that its flat surface contacts the nut 55, with their inclined surfaces contacting each other. The through holes 53 and 54 are opened larger than the thickness of the thread of the bolt 50. When tightened with the bolt 50 and the nut 55, the blocks 51 and 52 move in a direction away from each other in the vertical direction in FIG. 6(a) due to the inclined surfaces, and are fixed by pressing the end faces against the side wall 14 of the through hole 13 of the rectangular parallelepiped block 1 to be attached. Tightening of the bolt 50 acts in a direction of pressing the fixed guard 30 against the side surface of the rectangular parallelepiped block 1, and the fixed guard 30 is fixed to this rectangular parallelepiped block 1. Even if the object to be attached is the inclined block 2 instead of the rectangular parallelepiped block 1, the fixed guard 30 can be fixed in the same way.

[0059] Although the nut 55 is illustrated in FIG. 6, in the inner block 52, a tapped hole into which the bolt 50 can be screwed instead of the through hole 54 may be provided.

[0060] Although the invention made by the present inventor has been specifically described based on the embodiments, it goes without saying that the present invention is not limited thereto and can be variously modified without departing from the gist thereof.

Explanation of Signs

[0061] 1 Cuboid block 2 Inclined block 3 Fixed guard 4 Connector 5 Fixture 11, 21 Engaging portion 12, 22 Locking portion 13, 23 Through hole 14, 24 Side wall of through hole 30 Plate-like member 31 Guard portion 32 Stabilizing portion 40 Connecting portion 41 Shaft 42 Wire 43 Bolt portion 44 Wing nut 45 Relay shaft 46 High nut 50 Bolt 51 Outer inclined block 52 Inner inclined 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, wherein the rectangular parallelepiped blocks have engaging portions that engage with each other when arranged adjacent to each other in the front-rear direction, and locking portions that engage with each other when stacked in the vertical direction to prevent upward disengagement, the inclined blocks have the same width and length as the rectangular parallelepiped blocks, engaging portions that engage with the engaging portions of the rectangular parallelepiped blocks when arranged adjacent to the front side of the rectangular parallelepiped blocks, and locking portions that engage with the locking portions of the rectangular parallelepiped blocks when stacked on the rectangular parallelepiped blocks to prevent upward disengagement, the fixed guard is attached to the left end and the right end of the uppermost stage when 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 stages, the slope unit further has a coupler, each of the rectangular parallelepiped blocks and the inclined blocks is formed by extrusion molding extruded in the left-right direction and has a through hole penetrating in the left-right direction, the coupler connects the fixed guard attached to the left end and the fixed guard attached to the right end through the through holes of the plurality of rectangular parallelepiped blocks or inclined blocks arranged in the uppermost stage or other stages, Slope unit.

2. In Claim 1, when the coupler connects the left and right fixed guards, it has a left bolt portion protruding through the fixed guard attached to the left end and a right bolt portion protruding through the fixed guard attached to the right end, and further has a wing nut for tightening the left and right bolt portions respectively, Slope unit.

3. In Claim 1 or Claim 2, when the fixed guard is attached to the rectangular parallelepiped blocks or inclined blocks arranged in the uppermost stage or other stages, it has a plate-like member in contact with the side wall of the rectangular parallelepiped block or inclined block, a stabilizing portion in contact with the upper surface of the rectangular parallelepiped block or inclined block, and a guard portion protruding upward from the upper surface of the rectangular parallelepiped block or inclined block, Slope unit.

4. In Claim 1, The fixed guard attached to the left end has a fixture that is inserted into the through hole of the rectangular parallelepiped block or inclined block at the left end to fix the fixed guard. When the fixed guard is fixed, it abuts against the left side of the lowermost rectangular parallelepiped block or inclined block stacked up. The fixed guard attached to the right end has a fixture that is inserted into the through hole of the rectangular parallelepiped block or inclined block at the right end to fix the fixed guard. When the fixed guard is fixed, it abuts against the right side of the lowermost rectangular parallelepiped block or inclined block stacked up. Slope unit.

5. In claim 4, The fixture has a bolt that is inserted through from the outside of the fixed guard and two blocks whose widths are made variable by contacting each other on the inclined surfaces. The two blocks are widened in width by being tightened with the bolt, and abut against the side wall of the through hole of the rectangular parallelepiped block or inclined block to fix the fixed guard. Slope unit.

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