Slope device

Abstract

To provide a slope device that can accommodate various steps.SOLUTION: A slope device 500 has a slope section 210 arranged in an inclined orientation and a support section 250 supporting the slope section 210 adjustably in a height direction. The slope section 210 has a gradient of 1 / 6 or less and 1 / 12 or more.SELECTED DRAWING: Figure 12

Description

[Technical field]

[0001] The present invention relates to a temporary slope device and a slope unit. [Background technology]

[0002] Temporary slope devices have been used to easily overcome steps. The portable slope disclosed in Patent Document 1 includes a pair of slope plates, a hinge member that connects the slope plates so that they can be folded, and a plurality of stopper members that are spaced apart from each other and disposed along the side end faces of the sleeve plates on the other side of each slope plate. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2005-342016 A Summary of the Invention [Problem to be solved by the invention]

[0004] When such a temporary slope device is used at a work site, for example, it needs to be adapted to steps of various heights that are installed at the work site. The present invention has been made in consideration of the above-mentioned problems, and has an object to provide a slope device that can accommodate various steps. [Means for solving the problem]

[0005] The present invention is characterized by having a slope portion disposed at an angle, and a support portion that supports the slope portion so as to be adjustable in the height direction. Effect of the Invention

[0006] According to the present invention, a slope device capable of accommodating various steps can be provided. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is an exploded perspective view showing an example of the configuration of a slope device according to a first embodiment. [Diagram 2] 1A and 1B are a plan view and a side view showing an example of a configuration of a slope device. [Diagram 3] FIG. 2 is a side view showing an example of a partial configuration of a slope device. [Figure 4] FIG. 2 is a cross-sectional view showing an example of a partial configuration of a slope device. [Diagram 5] FIG. 2 is a cross-sectional view showing an example of a partial configuration of a slope device. [Figure 6] FIG. 11 is a side view showing an example of a slope device installed on different steps. [Figure 7] FIG. 11 is a side view showing an example of the configuration of a slope device according to a second embodiment. [Figure 8] FIG. 2 is a side view showing an example of a partial configuration of a slope device. [Figure 9] FIG. 2 is a cross-sectional view showing an example of a partial configuration of a slope device. [Figure 10] FIG. 11 is a side view showing an example of a partial configuration of a slope device according to a third embodiment. [Figure 11] FIG. 13 is a perspective view showing an example of the configuration of a slope device according to a fourth embodiment. [Figure 12] FIG. 13 is an exploded perspective view showing an example of the configuration of a slope device according to a fifth embodiment. [Figure 13] FIG. 2 is a plan view showing an example of the configuration of a slope device. [Figure 14] FIG. 2 is a side view showing an example of a configuration of a slope device. [Figure 15] FIG. 2 is a bottom view showing an example of a configuration of a slope device. [Figure 16A] FIG. 2 is a side view showing an example of a partial configuration of a slope device. [Figure 16B] FIG. 2 is a side view showing an example of a partial configuration of a slope device. [Figure 16C] FIG. 2 is a side view showing an example of a partial configuration of a slope device. [Figure 17]FIG. 4 is a perspective view showing an example of a handle portion. [Figure 18] 5A and 5B are diagrams illustrating an example of a configuration of an adjustment member. [Figure 19A] FIG. 11 is a rear view showing an example of a slope device when the height is adjusted. [Figure 19B] FIG. 11 is a rear view showing an example of a slope device when the height is adjusted. [Figure 20A] FIG. 11 is a cross-sectional view showing an example of a slope device when the height is adjusted. [Figure 20B] FIG. 11 is a cross-sectional view showing an example of a slope device when the height is adjusted. [Figure 21] FIG. 2 is a perspective view showing an example of the configuration of a slope unit. [Figure 22] FIG. 4 is a side view showing an example of the configuration of the protrusions. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] Hereinafter, the slope device according to the present embodiment will be described with reference to the drawings. (First embodiment) FIG. 1 is an exploded perspective view showing the configuration of the slope device 100. FIG. 2 is a plan view and a side view showing the configuration of the slope device 100. FIG. 3 is a side view showing a part of the configuration of the slope device 100. In the following, the lower side of the step is referred to as the lower step, and the upper side is referred to as the upper step. In addition, for convenience, in each figure, the front side from the lower step to the upper step in the horizontal direction is illustrated as Fr, the rear side as Rr, the right side as R, and the left side as L. The slope device 100 of this embodiment includes a slope portion 10 and a support portion 50.

[0009] First, the slope portion 10 will be described. The slope section 10 is disposed at an incline and has a function of allowing people and objects to pass over the step at a gentle gradient. The slope section 10 has, for example, a substantially rectangular shape in a plan view with a front-to-back length longer than a left-to-right length. The slope section 10 has a main slope section 11, a first slope section 21, a second slope section 31, and a third slope section 41. In the slope section 10, the first slope section 21, the second slope section 31, the third slope section 41, and the main slope section 11 are arranged in this order from the rear side to the front side.

[0010] The main slope section 11 is located between the third slope section 41 and the upper step of the step. The main slope section 11 has a plurality of (e.g., eight) slope members 12 and a plurality of (e.g., five) beam members 16. The slope member 12 is, for example, substantially flat with a left-right length longer than a front-to-back length. The slope member 12 is, for example, made of an aluminum alloy and formed by extrusion molding. The slope members 12 are arranged in parallel from front to back with no gaps. Furthermore, the slope member 12 has a protrusion formed integrally on the upper surface thereof in the left-right direction (width direction) as an anti-slip protrusion. The anti-slip protrusion is not limited to a protrusion, and may be formed by blasting or fixing a checker plate over the entire upper surface. The anti-slip protrusion is similarly configured in the other slope portions. In addition, the slope member 12 at the front of the main slope section 11 and the slope member 12 at the center of the main slope section 11 each have holes 13 on both the left and right sides for accessing adjustment members 58, 68 described below.

[0011] Furthermore, the rear slope member 12 of the main slope portion 11 has a different shape from the other slope members 12. FIG. 3(a) is an enlarged view of a part of the side view of FIG. 2(b). In FIG. 3(a), angle members 36 and 46, which will be described later, are shown in a see-through state. As shown in FIG. 3(a), the rear slope member 12 has a substantially circular rotating part 14 at the rear end. The rotating part 14 fits into a rotated part 43, which will be described later, of the third slope part 41, and rotates with respect to each other. That is, the third slope part 41 can rotate around an axis along the left-right direction of the rotating part 14 with respect to the main slope part 11. In addition, when the rotating part 14 and the rotated part 43 exceed a certain rotation range, they come into contact with each other and the rotation is restricted. In addition, the rear slope member 12 has a holding portion 15 extending from the rear end toward the front side. There is a gap above the holding portion 15, and the holding portion 15 holds from below the rail member 16 that is inserted into the gap from the front side.

[0012] The beam members 16 are disposed on the underside of the slope members 12 to improve the strength of the main slope section 11. The beam members 16 are hollow members with a generally rectangular cross section along the front-to-rear direction. The beam members 16 are made of, for example, an aluminum alloy, and are formed by extrusion molding. As shown by the two-dot chain line in FIG. 2(a), the multiple beam members 16 are disposed in parallel on the left and right at intervals. The beam members 16 are fixed to the underside of the slope members 12 using bolts or rivets. Thus, each slope member 12 and each beam member 16 are configured to intersect with each other.

[0013] The first slope portion 21 is in contact with the lower part of the step and forms an inclined surface continuing from the lower part. The first slope portion 21 is located behind the second slope portion 31. The first slope portion 21 has a plurality of (e.g., six) slope pieces 22. The slope piece 22 is, for example, a generally flat plate whose front-to-back length is longer than its left-to-right length. The slope piece 22 is, for example, made of an aluminum alloy and formed by extrusion molding. The multiple slope pieces 22 are arranged in parallel on the left and right with almost no gaps. Furthermore, the slope piece 22 has a protruding strip formed integrally on the upper surface thereof in the left-to-right direction as an anti-slip protrusion. The slope piece 22 may be a generally flat plate whose front-to-back length is shorter than its left-to-right length, or may be made of a flexible synthetic resin.

[0014] As shown in FIG. 3(a), the slope piece 22 has a rotatable portion 23 at the front end. The rotatable portion 23 fits into a rotating portion 32 (described later) of the second slope portion 31, and rotates relative to the second slope portion 31. That is, the slope piece 22 can rotate about an axis along the left-right direction of the rotating portion 32 relative to the second slope portion 31. When the rotating portion 32 and the rotated portion 23 exceed a certain rotation range, they come into contact with each other and the rotation is restricted. In this embodiment, the slope pieces 22 are arranged in parallel on the left and right, so that each slope piece 22 can rotate independently relative to the second slope portion 31. The slope piece 22 has seats 24a, 24b at its rear and front ends, which are grounded on the lower step of the step. The seats 24a, 24b are formed across the left and right direction of the slope piece 22. The seat 24b is located below the pivoted part 23. In order to make it easy to recognize the start of the incline, it is preferable that the upper surface of the slope piece 22 is colored in a color, for example, red, different from the upper surfaces of the second slope portion 31, the third slope portion 41, and the main slope portion 11. Coloring includes coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker or the like, coloring by mixing a coloring agent, and the like.

[0015] The second slope portion 31 constitutes an inclined surface continuing from the first slope portion 21. The second slope portion 31 is located in front of the first slope portion 21 and behind the third slope portion 41. The second slope portion 31 is, for example, in a generally flat plate shape whose left-right length is longer than its front-to-rear length, and is constituted by one piece. The second slope portion 31 is made of, for example, an aluminum alloy, and formed by extrusion molding. The second slope portion 31 has a protruding strip formed integrally on its upper surface in the left-right direction as an anti-slip protrusion. The second slope portion 31 has a rotating portion 32 at its rear end and a rotated portion 33 at its front end. The rotated portion 33 fits into a rotating portion 42 (described later) of the third slope portion 41, and rotates relative to the third slope portion 41; that is, the second slope portion 31 is rotatable about an axis along the left-right direction of the rotating portion 42 relative to the third slope portion 41. Note that the rotating portion 42 and the rotated portion 33 come into contact with each other and the rotation is restricted when they exceed a certain rotation range.

[0016] The second slope section 31 has seats 34a, 34b at the center and front end in the front-rear direction, which are grounded on the lower step of the step. A non-slip member 35 made of rubber or the like is attached to the lower end of the seat 34a. The seat 34b is located below the rotatable section 33 and grounds on the lower step in a bifurcated manner. By having the seat 34b grounded at two points, it is possible to prevent the second slope section 31 from swaying like a seesaw with the seat 34b as a fulcrum, even if a person or object passes between the second slope section 31 and the third slope section 41.

[0017] The third slope section 41 constitutes an inclined surface continuing from the second slope section 31. The third slope section 41 is located in front of the second slope section 31 and behind the main slope section 11. The third slope section 41 has a similar configuration to the second slope section 31, and the following description will focus on the differences. The third slope portion 41 has a rotating portion 42 at its rear end and a rotated portion 43 at its front end. As described above, the rotated portion 43 fits with the rotating portion 14 of the main slope portion 11 and rotates relative to the main slope portion 11. That is, the third slope portion 41 is rotatable around an axis along the left-right direction of the rotating portion 14 with respect to the main slope portion 11.

[0018] The third slope section 41 has seats 44a, 44b at the center and front end in the front-rear direction, which contact the lower step of the step. A non-slip member 45 made of rubber or the like is connected to the lower end of the seat 44a. The seat 44b is located below the pivoted section 43, and contacts the lower step in a bifurcated manner, splitting into front and rear portions.

[0019] Since the rotating portion 32 and the rotated portion 23, the rotating portion 42 and the rotated portion 33, and the rotating portion 14 and the rotated portion 43 are fitted together, they do not separate in the front-rear direction, but they slide relative to each other in the left-right direction. Therefore, L-shaped angle members 36 are fixed to both left-right ends of the second slope portion 31 as stopper members. The angle members 36 regulate the first slope portion 21 and the third slope portion 41 so that they do not slide in the left-right direction. In addition, the third slope portion 41 has L-shaped angle members 46 as stopper members at both left-right ends. The angle members 46 regulate the main slope portion 11 so that it does not slide in the left-right direction.

[0020] Next, the support portion 50 will be described. The support portion 50 is disposed below the slope portion 10. The support portion 50 supports the slope portion 10 so as to be adjustable in the height direction. The support portion 50 of this embodiment has a first support portion 50a and a second support portion 50b that are positioned apart in the front-rear direction.

[0021] The first support portion 50a is located on the central side of the slope portion 10 in the front-rear direction. The first support portion 50 a has a common beam member 51 and two support units 52 . The joist member 51 is disposed on the underside of the beam members 16 to improve the strength of the main slope section 11. The joist member 51 has a length from the right end to the left end in the left-right direction of the slope section 10, and is disposed so as to overlap with holes 13 on both sides formed in the slope member 12 at the center of the main slope section 11 in a plan view. The joist member 51 is made of iron, for example, and is a member having a substantially U-shaped cross section. The joist member 51 is fixed to the underside of the beam members 16 using bolts or rivets. Therefore, the joist member 51 and each beam member 16 are configured to intersect with each other.

[0022] The two support units 52 are disposed on both the left and right sides of the joist member 51. Specifically, the two support units 52 are disposed so as to overlap holes 13 on both sides formed in the slope member 12 at the center of the main slope portion 11 in a plan view. The two support units 52 each have the same configuration. FIG. 4 is a cross-sectional view taken along line II in FIG. 2(b) and seen from the direction of the arrow. As shown in FIG. 4, the support unit 52 has a swing support portion 53, a swing portion 54, and an adjustment member 58. The swing support part 53 swingably supports the swing part 54 and supports the adjustment member 58 so that it can be adjusted in the height direction. The swing support part 53 is made of, for example, iron, and is a roughly U-shaped member that opens downward when viewed from the front-to-rear direction. A nut 57 as a female screw part is fixed by welding or the like inside the U-shape of the swing support part 53 with its axis aligned in the height direction.

[0023] The swinging part 54 swings relative to the swinging support part 53. The swinging part 54 is made of iron, for example, and is a roughly U-shaped member that opens downward when viewed from the front-rear direction. The swinging part 54 has an enlarged shape of the swinging support part 53, and overlaps with the swinging support part 53 in a loosely fitted state. The swinging support part 53 and the swinging part 54 are connected by bolts 55 and nuts 56 with a certain amount of play between their hanging side plates. Therefore, the swinging part 54 can swing relative to the swinging support part 53 around the axis (La) of the bolt 55, that is, around the axis along the left-right direction. The upper surface of the swinging part 54 is fixed to the lower surface of the joist member 51 by welding or the like.

[0024] The adjustment member 58 can adjust the amount of protrusion from the underside of the slope portion 10, and supports the slope portion 10 by contacting the lower step of the step. The adjustment member 58 can be a so-called adjuster bolt. The adjustment member 58 has a receiving seat 59 that is in contact with the lower step of the step at its lower end and can rotate around the axis of the adjustment member 58. Meanwhile, the adjustment member 58 has an operation hole at its upper end into which an operator can insert a tool T such as a hexagonal wrench. The male thread of the adjustment member 58 is screwed into the nut 57 of the swing support portion 53, so that the adjustment member 58 is disposed in a state in which its axis is aligned in the height direction. Here, the swing portion 54 and the joist member 51 each have a hole through which the adjustment member 58 is inserted. Therefore, the adjustment member 58 is inserted through the swing portion 54 and the joist member 51, and its upper end is positioned within the hole 13 of the slope portion 10. Here, the operator inserts tool T into the operating hole at the upper end of adjustment member 58 and rotates it in one direction, changing the position where it is screwed into nut 57 and moving the entire member forward toward the lower side. On the other hand, when the operator rotates it in the other direction, the position where it is screwed into nut 57 changes and the entire member moves backward toward the upper side. In this way, the operator can adjust the amount of protrusion of adjustment member 58 that protrudes from the underside of slope section 10 by rotating adjustment member 58.

[0025] The second support portion 50b is located on the front end side of the slope portion 10. In the following, the configuration of the second support portion 50b that differs from the first support portion 50a will be mainly described. The second support portion 50b has a joist member 61, two support units 62, and a ground portion . The joist member 61 has a configuration similar to that of the joist member 51 of the first support portion 50a, and is arranged so as to overlap with holes 13 on both sides formed in the slope member 12 at the front end of the main slope portion 11 in a plan view.

[0026] The two support units 62 are disposed on both the left and right sides of the joist member 61. Specifically, the two support units 62 are disposed so as to overlap holes 13 on both sides formed in the slope member 12 at the front end of the main slope portion 11 in a plan view. The two support units 62 each have the same configuration. FIG. 5 is a cross-sectional view taken along line II-II in FIG. 2(b) and seen from the direction of the arrow. As shown in FIG. 5, the support unit 62 has a swing support portion 63, a swing portion 64, and an adjustment member 68. The swing support part 63 swingably supports the swing part 64 and supports the adjustment member 68 so that it can be adjusted in the height direction. The swing support part 63 is made of, for example, iron, and is a roughly U-shaped member that opens upward when viewed from the front-rear direction. A nut 67 as a female screw part is fixed to the outside of the U-shape of the swing support part 63 by welding or the like with its axis aligned in the height direction.

[0027] The swinging part 64 swings relative to the swinging support part 63. The swinging part 64 has the same configuration as the swinging part 54 of the first support part 50a. The swinging part 64 has a pair of side plates that overlap with a pair of side plates of the swinging support part 63 with some play. The swinging support part 63 and the swinging part 64 are connected to each other with bolts 65 and nuts 66 with some play between the side plates. Therefore, the swinging part 64 can swing relative to the swinging support part 63 around the axis (Lb) of the bolt 65, that is, around the axis along the left-right direction. The swinging part 64 has an upper surface fixed to the lower surface of the joist member 61 by welding or the like.

[0028] The adjustment member 68 can adjust the amount of protrusion from the underside of the slope portion 10, and supports the slope portion 10 by contacting with the lower step of the step. The adjustment member 68 has a similar configuration to the adjustment member 58 of the first support portion 50a, except that the male screw portion is longer than that of the adjustment member 58. The adjustment member 68 has a receiving seat 69 at its lower end that contacts with the lower step of the step and is rotatable around the axis of the adjustment member 68. Therefore, by inserting tool T into the operation hole at the upper end of adjustment member 68 and rotating it in one direction, the position where it is screwed into nut 67 changes and the entire member advances downward. On the other hand, by rotating it in the other direction, the position where it is screwed into nut 67 changes and the entire member retreats upward. In this way, by rotating adjustment member 68, the operator can adjust the amount of protrusion of adjustment member 68 that protrudes from the underside of slope section 10.

[0029] The grounding portion 70 is in contact with the upper step of the step. Fig. 3(b) is an enlarged view of a portion of Fig. 2(b). As shown in Fig. 3(b), the ground contact portion 70 is located in front of the main slope portion 11. The ground contact portion 70 is substantially L-shaped when viewed from the left-right direction, and its length in the left-right direction is substantially the same as that of the slope portion 10. The ground contact portion 70 is made of, for example, iron, and is formed by bending. The grounding portion 70 has a fixing portion 71 and a mounting portion 72 . The fixed portion 71 is a plate-like member extending in the vertical direction. The fixed portion 71 is fixed to the front end of the swing support portion 63 by using a bolt, a rivet, or the like. Therefore, even if the inclination angle of the slope portion 10 is changed, the ground contact portion 70 does not incline in synchronization with the slope portion 10, and can always maintain a constant posture. The mounting portion 72 is a substantially horizontal plate, and by placing it on the upper step of the step, the grounding portion 70 comes into contact with the upper step of the step. The height of the mounting portion 72 is located slightly higher than the front end of the main slope portion 11. In addition, there is a gap between the mounting portion 72 and the main slope portion 11 so that the slope portion 10 does not interfere with the mounting portion 72 when the slope portion 10 swings in synchronization with the swinging portion 64 and the inclination angle is changed (see FIG. 6 described later). In addition, the mounting portion 72 has a plurality of holes 73 for fixing it to the upper step of the step. In order to make it possible to recognize the start of the inclination, it is preferable that the upper surface of the mounting portion 72 is colored in a color different from the upper surfaces of the second slope portion 31, the third slope portion 41, and the main slope portion 11, for example, in red. Coloring includes coloring by surface treatment, coloring by applying paint, coloring by attaching a sticker or the like, and the like.

[0030] Next, a method for installing the slope device 100 configured as described above at a work site having a step will be described. Here, in order to ensure sufficient length in the left-right direction, two slope devices 100 are installed side by side on the left and right. First, a worker brings two pre-assembled slope devices 100 to the work site. At this time, the adjustment members 58 and 68 of the support units 52 and 62 of each slope device 100 are in a state in which the receiving seats 59 and 69 are respectively close to the main slope section 11. In other words, the adjustment members 58 and 68 are in a state in which the amount of protrusion from the underside of the slope section 10 is short.

[0031] Next, the worker places the mounting portion 72 of the ground contact portion 70 on the upper step of the step, and grounds the first slope portion 21, the second slope portion 31, and the third slope portion 41 of the slope portion 10 on the lower step of the step. At this time, the worker arranges the two slope devices 100 side by side with almost no gap between them. Next, the operator inserts tool T into the operation hole of adjustment members 58, 68 through hole 13 of main slope portion 11 and rotates it in one direction to advance adjustment members 58, 68 downward. The operator rotates receiving seat 59 of adjustment member 58 and receiving seat 69 of adjustment member 68 until they contact the lower step of the step. Therefore, slope portion 10 is supported by adjustment members 58, 68 of support portion 50. Next, the worker can install the slope device 100 by fixing the grounding portion 70 to the upper step of the step using bolts or the like through the holes 73 of the mounting portion 72. In this way, the slope device 100 of this embodiment does not require the worker to assemble it, so the slope device 100 can be easily installed. Note that, although the case where two slope devices 100 are installed side by side on the left and right has been described here, only one slope device 100 may be installed, or three or more slope devices 100 may be installed side by side on the left and right.

[0032] When the slope device 100 is installed, the slope section 10 is supported by the adjustment members 58, 68 of the support section 50. Therefore, the load when passing over the slope section 10 is not received only by the first slope section 21 etc. and the ground contact section 70, but is received at the lower stage via the adjustment members 58, 68 of the support section 50, and the strength of the slope device 100 can be improved.

[0033] Fig. 6 is a side view showing a state where the slope device 100 is installed on an upper step that is higher than the upper step shown in Fig. 2(b). In Fig. 6, the protruding amount of the adjustment members 58, 68 protruding from the lower side of the slope section 10 is adjusted to be longer than that in Fig. 2(b), so that the adjustment members 58, 68 are grounded on the lower step of the step. In this way, the support section 50 supports the slope section 10 via the adjustment members 58, 68 so as to be adjustable in the height direction, and therefore can accommodate various steps. In this embodiment, the height from the lower step to the upper step can accommodate, for example, 110 mm to 210 mm.

[0034] Moreover, the slope section 10 swings relative to the swing support section 53, i.e., relative to the adjustment member 58, via the swing section 54. Similarly, the slope section 10 swings relative to the swing support section 63, i.e., relative to the adjustment member 68, via the swing section 64. That is, even if the protrusion amounts of the adjustment members 58, 68 are adjusted in order to install the slope section 10 on different steps, the slope section 10 swings relatively between the swing support section 53 and the swing section 54 and between the swing support section 63 and the swing section 64, so that the inclination angle of the slope section 10 can be changed. Therefore, it is possible to accommodate various steps.

[0035] Furthermore, the support section 50 has a grounding section 70 that is grounded on the upper step of the step. Specifically, the grounding section 70 is not provided on the slope section 10, but is connected to the swinging support section 63 of the support section 50. Therefore, even if the slope section 10 is installed on a different step and the inclination angle of the slope section 10 changes, the grounding section 70 does not incline in synchronization with the inclination angle of the slope section 10, so that it is possible to prevent an unintended gap or step from occurring between the grounding section 70 and the upper step of the step.

[0036] Furthermore, the placement portion 72 of the ground contact portion 70 is located slightly higher than the front end of the main slope portion 11. In other words, the front end of the main slope portion 11 is lower in height than the placement portion 72 of the ground contact portion 70. Therefore, even when a transport cart passes from the ground contact portion 70 toward the slope portion 10, the transport cart can be prevented from hitting the front end of the slope portion 10. Therefore, the external force that the slope portion 10 receives from the front side can be suppressed, and therefore damage to the slope portion 10 and displacement of the slope portion 10 can be prevented. Furthermore, since there is a gap between the ground contact portion 70 and the slope portion 10, the slope portion 10 oscillates in synchronization with the oscillating portion 64, and interference with the slope portion 10 can be prevented when the inclination angle is changed.

[0037] In addition, the first slope section 21 and the second slope section 31, the second slope section 31 and the third slope section 41, and the third slope section 41 and the main slope section 11 can rotate around an axis along the left-right direction. Therefore, when the first slope section 21, the second slope section 31, and the third slope section 41 are placed on the ground on the lower step of the step, even if there is an undulation on the lower step, they rotate between each slope section to follow the undulation. Therefore, even if there is an undulation on the lower step, each slope section can be placed on the ground, so that the lifting of the slope section 10 can be suppressed.

[0038] The first slope section 21 also has slope pieces 22 arranged in parallel on the left and right. The slope pieces 22 can rotate independently of the second slope section 31. Therefore, when the first slope section 21 is placed on the lower step of a step, even if there is a lateral undulation on the lower step, each slope piece 22 rotates to follow the undulation. Therefore, each slope piece 22 can form an inclined surface that continues from the lower step. Note that by making the slope piece 22 out of a material (e.g., synthetic resin) that is more flexible than the second slope section 31, the slope piece 22 itself can bend and further follow the undulation.

[0039] Second embodiment In this embodiment, the support portion 50 of the first embodiment is replaced with a support portion 80, and the ground portion 70 is replaced with a ground portion 95. Note that the same components as those in the first embodiment are given the same reference numerals and the description thereof will be omitted as appropriate. Fig. 7 is a side view showing an example of the configuration of the slope device 200. Fig. 8 is a side view showing an example of the configuration of the periphery of the support part 80 of the slope device 200. Fig. 9 is a cross-sectional view taken along the line III-III shown in Fig. 7 and seen from the direction of the arrow. Note that Figs. 7 and 8 show an angle member 97, which will be described later, in a see-through state. The support portion 80 in this embodiment is formed only at the front end of the slope portion 10. The support portion 80 has a swing portion 81, a swing support portion 84, an adjustment member 88, and a ground portion 95.

[0040] The oscillating portion 81 oscillates relative to the oscillating support portion 84. The oscillating portion 81 is located in front of the main slope portion 11 and behind the ground contact portion 95. The length of the oscillating portion 81 in the left-right direction is approximately the same as that of the slope portion 10. The oscillating portion 81 in this embodiment has an upper surface that is inclined so as to be continuous with the main slope portion 11, and therefore also functions as a part of the slope portion 10. The oscillating portion 81 is made of, for example, an aluminum alloy and is formed by extrusion molding. The oscillating portion 81 has a connecting portion 82 at its rear end. The connecting portion 82 connects the beam members 16 by clamping the front ends of the beam members 16 from above and below and fixing them using bolts or rivets.

[0041] Furthermore, the swinging portion 81 has a guided portion 83 whose swinging is guided by a guide portion 85 of the swing support portion 84. The guided portion 83 is formed in a concave shape with respect to the lower surface of the swinging portion 81. Specifically, the guided portion 83 is formed as part of a circle curved in an arc shape toward the upper surface with a horizontal axis (Lb) along the left-right direction as a center when viewed from the left-right direction. The guided portion 83 is formed from the right end to the left end of the swinging portion 81 in the left-right direction. Further, the swinging portion 81 has holes 13 for accessing the adjustment member 88 on both the left and right sides, similar to the first embodiment.

[0042] The swing support portion 84 swingably supports the swing portion 81, and also supports the adjustment member 88 so that the adjustment member 88 can be adjusted in the height direction. The swing support portion 84 has approximately the same length as the swing portion 81 in the left-right direction. The swing support part 84 is made of, for example, an aluminum alloy, and is formed by extrusion molding. The swing support part 84 also has a guide part 85 at its upper part, which guides the guided part 83 of the swing part 81. The guide part 85 is formed in a convex shape facing upward. Specifically, the guide part 85 is part of a circle centered on the axis line (Lb) when viewed from the left-right direction, and is formed hollow at the center for lightening. Also, a hole is formed at the top of the guide part 85, which communicates with the hole 13 when viewed in a plan view.

[0043] The swing support portion 84 also has a substantially U-shaped base portion 86 at its lower portion, which opens downward when viewed from the left-right direction. The base portion 86 has a hole formed therein, which communicates with the hole 13 when viewed in a plan view. A nut 87, which serves as a female screw portion, is disposed on the base portion 86 via a mounting plate 90. Specifically, the mounting plate 90 is attached in a fitted state to the base portion 86, and the nut 87 is fixed to the lower surface of the mounting plate 90 by welding or the like, with its axis aligned in the height direction. The base 86 is not limited to having an approximately U-shaped opening, but may simply be a substantially horizontal plate. In this case, the mounting plate 90 is fixed to the underside of the base 86 using bolts, rivets, etc.

[0044] The adjustment member 88 can adjust the amount of protrusion from the underside of the swinging part 81, and supports the slope part 10 by contacting the lower part of the step. The support part 80 has two adjustment members 88 on both the left and right sides of the swinging support part 84. The adjustment member 88 has the same configuration as the adjustment member 68 of the first embodiment. The adjustment member 88 has a receiving seat 89 that is in contact with the lower part of the step at its lower end and is rotatable around the axis of the adjustment member 88. The male thread of the adjustment member 88 is screwed into a nut 87 fixed to the swinging support part 84, so that the axis of the adjustment member 88 is arranged along the height direction. The guide part 85 and the base part 86 of the swinging support part 84 have holes that communicate with the hole 13, so that the upper end of the adjustment member 88 is located within the hole 13 of the swinging part 81.

[0045] A retaining member 92 is connected to the receiving seat 89. The retaining member 92 is, for example, a bolt. As shown in FIG. 9, the retaining member 92 is located on the outer side in the left-right direction of the adjustment member 88. The retaining member 92 passes through the mounting plate 90 and the swing support portion 84 with its axis aligned in the height direction, and approaches the top of the swing support portion 84. The retaining member 92 also has a stopper portion 93 at its upper portion. The stopper portion 93 is, for example, the head portion of a bolt, and has a diameter larger than the diameter of the male thread portion of the bolt. Since the retaining member 92 is connected to the receiving seat 89, it moves in synchronization with the movement of the adjustment member 88 in the height direction. If the adjustment member 88 advances excessively downward, the stopper portion 93 of the retaining member 92 abuts against the upper surface of the abutment portion 91 of the mounting plate 90, thereby preventing the adjustment member 88 from coming off the nut 87. The abutment portion 91 is a U-shaped upper surface that protrudes downward from the mounting plate 90, and is located lower than the lower surface of the mounting plate 90. Note that the adjustment member 88 may be prevented from slipping out of the nut 87 by tightening a portion of the male thread portion of the adjustment member 88, and in this case, the retaining member 92 can be omitted.

[0046] The grounding portion 95 is a single, approximately plate-like member. The grounding portion 95 is made of, for example, iron. The grounding portion 95 is rotatably connected to the front end of the swinging portion 81 by a rotating shaft 96. The rotating shaft 96 passes through the front end of the swinging portion 81 and the rear end of the grounding portion 95 with its axis aligned in the left-right direction. Therefore, even if the inclination angle of the slope portion 10 changes, the grounding portion 95 can be grounded flatly on the upper step of the step. In addition, by rotating the front end side of the grounding portion 95 toward the receiving seat 89 of the adjustment member 88, the slope device 200 can be carried compactly.

[0047] The operator inserts the tool T into the operation hole of the adjustment member 88 through the hole 13 of the swinging portion 81 and rotates it in one direction, causing the adjustment member 88 to advance downward. The operator rotates the receiving seat 89 of the adjustment member 88 until it touches the lower step of the step, and the slope portion 10 is supported by the adjustment member 88 of the support portion 80. 8 indicates a state in which the adjustment member 88 is adjusted to its limit. At this time, the stopper portion 93 of the retaining member 92 abuts against the upper surface of the abutment portion 91 of the mounting plate 90. In addition, since the swinging portion 81 and the swinging support portion 84 are fitted together, they do not separate in the height direction, but they slide relatively in the left-right direction. Therefore, L-shaped angle members 97 are fixed to both left-right ends of the swinging portion 81 as stopper members.

[0048] According to this embodiment, for example, an aluminum alloy can be used for the oscillating portion 81 and the oscillating support portion 84, so that the weight of the slope device 200 can be reduced. Also, as in the first embodiment, when the slope device 200 is installed, the adjustment member 88 of the support portion 80 supports the slope portion 10. Therefore, the load when passing over the slope portion 10 is not received only by the first slope portion 21 etc. and the grounding portion 95, but is received at the lower stage via the adjustment member 88 of the support portion 80, so that the strength of the slope device 200 can be improved.

[0049] Furthermore, the support portion 80 supports the slope portion 10 via the adjustment member 88 in such a way that the slope portion 10 can be adjusted in the height direction, and therefore can accommodate various steps. In addition, since the ground contact portion 95 is rotatably connected to the oscillating portion 81 that functions as a part of the slope portion 10, the ground contact portion 95 can be grounded evenly on the upper step of the step even if the inclination angle of the slope portion 10 changes. In addition, it is possible to prevent a gap from occurring between the oscillating portion 81 and the ground contact portion 95.

[0050] (Third embodiment) In this embodiment, the shape of the support portion 80 in the second embodiment is partially changed. Also, the pull-out prevention member 92 in the second embodiment is changed to a pull-out prevention member 98. Note that the same components as those in the first and second embodiments are denoted by the same reference numerals and the description thereof will be omitted as appropriate. 10 is a side view showing an example of the configuration of the vicinity of the support part 80 of the slope device 300. The swinging part 81 of this embodiment has guided parts 83a to 83c. Meanwhile, the swinging support part 84 of this embodiment has guide parts 85a to 85c that guide the guided parts 83a to 83c. The guided parts 83a, 83b and the guide parts 85a, 85b fit together, respectively, to prevent the swinging part 81 and the swinging support part 84 from being separated in the height direction.

[0051] The base 86 of the swing support part 84 is directly fixed by welding or the like with a nut 87 as a female screw part inside, with its axis aligned in the height direction. Furthermore, the fixing part 71 of the grounding part 70 is fixed to the front end of the base 86 by using a bolt, rivet, or the like. In addition, a retaining member 98 is connected between the receiving seat 89 of the adjustment member 88 and the base 86. The retaining member 98 is, for example, a chain. The retaining member 98 is stretched across the adjustment member 88 when the adjustment member 88 advances excessively downward, thereby preventing the adjustment member 88 from coming out of the nut 87.

[0052] (Fourth embodiment) The slope device 400 of this embodiment is configured by adding a connecting portion 110 and a connected portion 112 to the slope device 100 of the first embodiment, and further adding a handle portion 120. Note that the same components as those in the first embodiment are given the same reference numerals, and the description thereof will be omitted as appropriate. FIG. 11 is a perspective view showing the configuration of the slope device 400. As shown in FIG. When a plurality of slope devices 400 are installed side by side on the left and right, the connecting portion 110 and the connected portion 112 connect adjacent slope devices 400 so that they do not separate.

[0053] The connecting part 110 is fixed to the side surface of the rail member 16 located at the right end using bolts, rivets, etc. In this embodiment, two connecting parts 110 are arranged spaced apart from each other in the front and rear. The connecting part 110 is made of iron, for example, and formed by bending. The connecting part 110 also has a connecting hole 111 that penetrates in the height direction. The connected parts 112 are fixed to the underside of the rail member 16 located at the left end using bolts, rivets, etc. In this embodiment, two connected parts 112 are arranged spaced apart in the front and rear. The connected parts 112 are each arranged opposite the connecting part 110 in the left-right direction. The connected parts 112 are made of iron, for example, and are formed by bending. The connected parts 112 extend in the height direction from the bottom.

[0054] Here, assume that the slope devices 400 are installed side by side on the left and right. In this case, the first slope device 400 is installed first, and then the second slope device 400 is installed on the left side of the first slope device 400. At this time, the second slope device 400 is installed from above while aligning its position so that the connected portion 112 of the first slope device 400 is inserted into the connecting hole 111 of the connecting portion 110 of the second slope device 400. The second slope device 400 is connected to the first slope device 400 by inserting the connected portion 112 into the connecting hole 111 of the connecting portion 110. Therefore, the two slope devices 400 can be installed side by side with almost no gaps. Even when installing three or more slope devices 400, they can be installed side by side with almost no gaps by connecting them in the same manner. The shapes of the connecting part 110 and the connected part 112 are not limited to those described above. For example, the connecting part 110 may have a shape in which the above-mentioned L-shaped angle member 97 is further extended toward the rear side. In this case, the second slope device 400 is connected to the first slope device 400 by inserting the connected part 112 between the angle member 97 and the rail member 16.

[0055] The handle 120 is a part that an operator grasps when carrying the slope device 400. The handle 120 is fixed to the underside of the right-end rail member 16 and the left-end rail member 16 using bolts, rivets, or the like. That is, in this embodiment, two handles 120 are arranged on the left and right. The handle 120 is made of, for example, iron or a flexible material (for example, nylon). When the handle 120 is made of iron, it is preferable that the handle 120 can be accommodated on the underside of the slope section 10. The operator grasps one of the handles 120 and carries the slope device 400 in a hanging state, that is, in a state in which the left and right directions of the slope section 10 are hanging. At this time, it is preferable that the handle 120 is arranged at the position of the center of gravity in the front-rear direction so that the slope device 400 does not become slanted. In this way, since the slope device 400 has the handle portion 120, the worker can easily carry the slope device 400.

[0056] Fifth embodiment Fig. 12 is a perspective view showing the configuration of the slope device 500. Fig. 13 is a plan view showing the configuration of the slope device 500. Fig. 14 is a side view showing the configuration of the slope device 500. Fig. 14 shows a see-through state of an angle member, which will be described later. Fig. 15 is a bottom view showing the configuration of the slope device 500. The slope device 500 of this embodiment includes a slope portion 210 and a support portion 250.

[0057] First, the slope portion 210 will be described. The slope section 210 is disposed at an incline, and has a function of allowing people and objects to pass over the step at a gentle gradient. In a plan view, the slope section 10 is, for example, substantially rectangular in shape with a front-to-rear length longer than a left-to-right length. The slope section 210 has a front-to-rear length (La shown in FIG. 14) of approximately 960 mm (for example, in the range of 800 mm to 1200 mm) and a left-to-right length (width direction) of approximately 600 mm (for example, 400 mm to 800 mm). The height (H shown in FIG. 14) of the slope section 210 can be adjusted between approximately 100 mm to approximately 150 mm, and the adjustment range is approximately 50 mm (for example, 40 mm to 80 mm). When the gradient of the slope section 210 of this embodiment is expressed as H / L, the gradient is set to be 1 / 6 or less and 1 / 12 or more. Here, the gradient is set to be 1 / 6 or less in consideration of the Parking Lot Law Enforcement Ordinance. If the gradient is greater than 1 / 6, it will be too steep, so it is preferable to set the gradient to 1 / 6 or less. Also, the gradient is set to 1 / 12 or more in consideration of the Act on Promotion of Smooth Mobility of the Elderly and Disabled. If the gradient is less than 1 / 12, the slope device 500 will become too large, so it is preferable to set the gradient to 1 / 12 or more. The slope portion 210 has a main slope portion 211, a first slope portion 221, and a second slope portion 231. The slope portion 210 is arranged in the order of the first slope portion 221, the second slope portion 231, and the main slope portion 211 from the rear side to the front side. The surfaces (top surfaces) of the main slope portion 211, the first slope portion 221, and the second slope portion 231 are each the same color.

[0058] The main slope portion 211 is located between the second slope portion 231 and the upper part of the step. The main slope portion 211 has a plurality of (e.g., six) slope members 212 and a plurality of (e.g., five) rail members 217. The slope members 212 have a configuration similar to that of the slope member 12 of the first embodiment. The main slope portion 211 has a protruding strip formed integrally on its surface in the left-right direction as an anti-slip protrusion. The front slope member 212b of the main slope portion 211 has a hole 216 for exposing the upper end of the adjustment member 261.

[0059] Furthermore, the rear slope member 212a and the front slope member 212b of the main slope portion 211 have a different shape from the other central slope member 212. 16A and 16B are enlarged views of a part of the side view of FIG. 14. As shown in FIG. 16A, the rear slope member 212a has a substantially circular rotating part 214 at the rear end. The rotating part 214 fits into a rotated part 233 (described later) of the second slope part 231, and rotates with respect to each other. That is, the second slope part 231 can rotate around an axis along the left-right direction of the rotating part 214 with respect to the main slope part 211. Note that the rotating part 214 and the rotated part 233 come into contact with each other and the rotation is restricted when they exceed a certain rotation range. In addition, the rear slope member 212a has a holding part 215 extending from the rear end toward the front side. There is a gap above the holding part 215, and the holding part 215 holds the large rail member 217 inserted into the gap from the front side from the lower side. 16B, the front slope member 212b has a holding portion 213 extending from the front end toward the rear side. There is a gap above the holding portion 213, and the holding portion 213 holds from below the rail member 217 inserted into the gap from the rear side. The beam member 217 has a similar configuration to the beam member 16 of the first embodiment.

[0060] In addition, L-shaped angle members 241R and 241L are fixed to both left and right ends of the main slope portion 211 as connecting members. The angle members 241R and 241L function as protective members that protect the ends of the main slope portion 211. The angle members 241R and 241L have approximately the same length as the length of the main slope portion 211 in the front-rear direction. The angle members 241R and 241L are made of, for example, an aluminum alloy and formed by extrusion molding. The angle member 241R covers the side surface and surface of the right end of the main slope portion 211, and the angle member 241L covers the side surface and surface of the left end of the main slope portion 211. The angle members 241R and 241L are fixed to the surface of the main slope portion 211 using bolts, rivets, etc. Here, the front and side surfaces of the angle members 241R and 241L, i.e., the exposed surfaces, are colored in a color different from the surface of the main slope portion 211, for example, red. The angle members 241R and 241L function as visual recognition parts for recognizing the left and right ends of the slope portion 210. The coloring includes coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker or the like, coloring by mixing a coloring agent, and the like. Note that the angle members 241R and 241L are not limited to being L-shaped, and may simply be plate members covering the side surfaces of the right and left ends of the main slope portion 211, or may simply be plate members covering the surfaces of the right and left ends of the main slope portion 211.

[0061] Moreover, the angle member 241R has a connecting portion 242. On the other hand, the angle member 241L has a connected portion 243. When multiple slope devices 500 are installed side by side on the left and right, the connecting portion 242 and the connected portion 243 connect adjacent slope devices 500 so that they do not separate. A plurality of (e.g., two) connecting portions 242 are arranged at a distance from each other at the front and rear of the angle member 241R. The connecting portions 242 are grooves that open downward in the side plate of the angle member 241R. A plurality of (e.g., two) connected portions 243 are arranged at a distance from each other at the front and rear of the angle member 241L. The connected portions 243 are rivets or the like that are fixed to the side plate of the angle member 241L. The connecting portions 242 and the connected portions 243 are arranged at positions that are approximately symmetrical with respect to the center line C of the slope device 500. The two slope devices 500 are connected by fitting from above into the groove that is the connecting portion 242 of the second slope device 500 into the head of the rivet that is the connected portion 243 of the first slope device 500. The head of the rivet of the connected portion 243 is larger than the groove of the connecting portion 242, and by positioning the head of the rivet between the side plate of the angle member 241R and the main slope portion 211, the connecting portion 242 and the connected portion 243 are connected without being separated to the left and right.

[0062] The main slope portion 211 also has handles 244R, 244L on both the left and right sides. The handles 244R, 244L are portions that an operator grasps when lifting or carrying the slope device 500. Here, the grip portion 244R and the grip portion 244L are configured substantially symmetrically with respect to the center line C, and only the grip portion 244R will be described. FIG. 17 is a perspective view showing an example of the configuration of the handle portion 244R. When not in use, the handle portion 244R is stored below the main slope portion 211 and is pulled up to be used. The handle portion 244R is bar-shaped and bent into a U-shape. Specifically, the handle portion 244R has a handle portion 245, a slide portion 246, and a rotating portion 247. The handle portion 245 is a portion that an operator actually puts his / her hand on and grasps. The slide portion 246 is formed by bending from the end of the handle portion 245. The slide portion 246 is inserted into a slide hole 248 formed close to the right end of the main slope portion 211 and separated in the front and rear directions. The rotating portion 247 is formed by bending from the end of the slide portion 246. The tip of the rotating portion 247 has a retaining portion to prevent it from slipping out of the slide hole 248.

[0063] 17(a) is a diagram showing a state in which the handle portion 244R is housed below the main slope portion 211. In this state, the handle portion 244R hangs down due to its own weight, and the handhold portion 245 is in contact with the surface of the main slope portion 211. 17(b) is a diagram showing a state in which an operator hooks the handgrip 245 and pulls it up. In this state, the rotating portion 247 of the grip portion 244R abuts against the periphery of the slide hole 248. The operator can lift the slope device 500 by pulling it further upward from this state. In particular, the operator can lift the entire slope device 500 by pulling up the grip portions 244R and 244L with both hands. 17(c) is a diagram showing a state in which an operator has rotated the handgrip 245 around the rotating part 247. In this state, the handgrip 245 protrudes outward from the side surface of the angle member 241R. By holding the handle 244R with one hand, an operator can carry the slope device 500 with the surface of the main slope portion 211 oriented vertically.

[0064] The first slope portion 221 is in contact with the lower step of the step and forms an inclined surface continuing from the lower step. The first slope portion 221 is located behind the second slope portion 231. The first slope portion 221 is, for example, in a generally flat plate shape whose left-right length is longer than its front-to-back length, and is formed of one piece. The first slope portion 221 is made of, for example, an aluminum alloy, and formed by extrusion molding. The first slope portion 221 has a protruding stripe formed integrally on its surface in the left-right direction as an anti-slip protrusion.

[0065] The first slope portion 221 has a rotated portion 222 at its front end. The rotated portion 222 fits into a rotating portion 232 (described later) of the second slope portion 231, and rotates relative to the second slope portion 231. That is, the first slope portion 221 is rotatable about an axis along the left-right direction of the rotating portion 232 relative to the second slope portion 231. Note that the rotating portion 232 and the rotated portion 222 come into contact with each other and the rotation is restricted when they exceed a certain rotation range. The first slope portion 221 has a seat portion 223 at its rear end that is in contact with the lower step of the step. The seat portion 223 is formed across the first slope portion 221 in the left-right direction. Further, anti-slip members 224 made of rubber or the like are joined to the lower surface of the first slope portion 221. As shown in Fig. 15, a plurality of (for example, three) anti-slip members 224 are fixed to the lower surface of the first slope portion 221 at intervals in the left-right direction using screws, rivets, or the like. Also, first slope portion 221 has a plurality of holes 228 at positions adjacent to the rear end and adjacent to the left and right ends thereof for fixing to the lower step of a step.

[0066] The second slope portion 231 constitutes an inclined surface continuing from the first slope portion 221. The second slope portion 231 is located in front of the first slope portion 221 and behind the main slope portion 211. The second slope portion 231 is, for example, in a generally flat plate shape whose left-right length is longer than its front-to-rear length, and is constituted by one piece. The second slope portion 231 is made of, for example, an aluminum alloy, and formed by extrusion molding. The second slope portion 231 has a protruding stripe integrally formed on its surface in the left-right direction as an anti-slip protrusion. The second slope portion 231 has a rotating portion 232 at its rear end, and a rotated portion 233 at its front end. The rotated portion 233 fits into the rotating portion 214 of the rear slope member 212a. Further, anti-slip members 234 made of rubber or the like are joined to the lower surface of the second slope portion 231. As shown in Fig. 15, a plurality of (for example, three) anti-slip members 234 are fixed to the lower surface of the second slope portion 231 at intervals in the left-right direction using screws, rivets, or the like.

[0067] Here, anti-slip member 224 and anti-slip member 234 each have a main body portion 225 and a protrusion portion 226. Main body portion 225 is a portion that is fixed to the lower surface of first slope portion 221 and second slope portion 231, respectively. Protrusion portion 226 is a portion that protrudes from the lower surface of main body portion 225 toward the floor surface. A plurality of protrusion portions 226 are formed at intervals in the front-rear direction. Moreover, each protrusion portion 226 has approximately the same shape along the left-right direction. FIG. 16C is an enlarged view of a part of the protrusion 226. In FIG. 16C, the anti-slip member 224 and the anti-slip member 234 are in contact with a horizontal floor surface (two-dot chain line). The protrusion 226 has a front side surface 227a and a rear side surface 227b, and a center line Ce between the front side surface 227a and the rear side surface 227b is inclined toward the front side. In addition, the protrusion 226 is formed so that the front side surface 227a and the rear side surface 227b are not parallel, but approach each other as they go downward. Here, the angle on the front side between the front side surface 227a of the protrusion 226 and the floor surface is angle α1, and the angle on the rear side between the rear side surface 227b of the protrusion 226 and the floor surface is angle α2. In this case, the protrusion 226 is formed so that the angle α1 is smaller than the angle α2. The above-mentioned shape makes it difficult for the anti-slip members 224 and 234 to move rearward. Therefore, the first slope portion 221 and the second slope portion 231 to which the anti-slip members 224 and 234 are fixed, respectively, are difficult to move in a direction away from the upper step of the step, and it is possible to suppress the occurrence of a gap between the slope device 500 and the upper step of the step. On the other hand, even if the first slope portion 221 and the second slope portion 231 move forward, the movement is in a direction approaching the upper step of the step, so that it is possible to reduce the gap between the slope device 500 and the upper step of the step.

[0068] Since the rotating portion 232 and the rotated portion 222, and the rotating portion 214 and the rotated portion 233 are fitted together, they do not separate in the front-rear direction, but they slide relative to each other in the left-right direction. Therefore, L-shaped angle members 236R, 236L are fixed to both left-right ends of the second slope portion 231 as stopper members. The angle members 236R, 236L regulate the first slope portion 221 and the main slope portion 211 so that they do not slide in the left-right direction. Here, the front and side surfaces of the angle members 236R and 236L, i.e., the exposed surfaces, are colored in a color different from the surface of the second slope portion 231, for example, red. The angle members 236R and 236L function as visual recognition parts for recognizing the left and right ends of the slope portion 210. The coloring includes coloring by surface treatment such as anodizing, coloring by applying paint, coloring by attaching a sticker or the like, coloring by mixing a coloring agent, and the like. The angle members 236R and 236L are not limited to being L-shaped, and may simply be plate members covering the side surfaces of the right and left ends of the second slope portion 231, or may simply be plate members covering the surfaces of the right and left ends of the second slope portion 231.

[0069] Next, the support portion 250 will be described. The support portion 250 is located below the slope portion 210, on the front end side in the front-rear direction of the slope portion 210. The support portion 250 supports the slope portion 210 so as to be adjustable in the height direction. The support section 250 of this embodiment has a first support unit 251a and a second support unit 251b. The first support unit 251a and the second support unit 251b are disposed below the front slope member 212b, on both the left and right sides of the front slope member 212b. Specifically, the first support unit 251a and the second support unit 251b are disposed so as to overlap with the holes 216 on both sides formed in the front main slope section 211 in a plan view. The first support unit 251a and the second support unit 251b have the same basic configuration. Therefore, the first support unit 251a will be taken up here to explain the basic configurations of both units, and the different configurations will be described later.

[0070] As shown in FIG. 12, the first support unit 251a has a screw member 252 and an adjustment member 261. The screw member 252 is fixedly attached to the slope portion 210, and is screwed between the screw member 252 and the adjustment member 261. Specifically, the screw member 252 has a main body portion 253, a first attachment portion 255, a second attachment portion 256, and a nut 257 as a female screw portion. Here, the main body portion 253, the first attachment portion 255, and the second attachment portion 256 are an integral member formed by bending through press molding, and are made of, for example, iron.

[0071] The main body 253 is in the form of a plate that is long in the front-rear direction, and has a hole 254 in the approximate center through which the adjustment member 261 is inserted (see FIGS. 20A and 20B described later). The first mounting portion 255 is substantially U-shaped when viewed from the front-rear direction. Specifically, the first mounting portions 255 extend in parallel in a pair upward from the left and right ends at the rear side of the main body portion 253. The first mounting portions 255 sandwich the rail member 217 from the left and right, and are fixed to the rail member 217 using screws, rivets, or the like through multiple mounting holes. The second mounting portion 256 is substantially hat-shaped when viewed from the front-rear direction. Specifically, the second mounting portions 256 extend upward in parallel from the left and right ends at the front side of the main body portion 253, and then bend and extend in directions away from each other to the left and right. The second mounting portions 255 are fixed to the slope member 212b by using screws, rivets, etc. through multiple mounting holes while abutting against the lower surface of the front slope member 212b.

[0072] The nut 257 is fixed to the lower surface of the main body 253 by, for example, welding in a state in which it communicates with the hole 254 at the approximate center of the main body 253. Here, when the first support unit 251a and the second support unit 251b are attached to the slope portion 210, the axis of the nut 257 is not aligned with the vertical direction when viewed from the front-rear direction, but is intentionally tilted at a predetermined angle. That is, the extension direction of the first mounting portion 255 and the second mounting portion 256 of the main body 253 to which the nut 257 is fixed is designed so that it is not intentionally parallel to the horizontal plane when viewed from the front-rear direction.

[0073] The adjustment member 261 is screwed into the screw member 252 and is in contact with the floor surface. Fig. 18(a) is a partial cross-sectional view showing the configuration of adjustment member 261. Fig. 18(b) is a bottom view of adjustment member 261. Adjustment member 261 has bolt 262 as a male thread portion, fixed plate 264, and seat 265. The head side of bolt 262 is located within seat 265, and the tip side is exposed. A hole 263 is formed in the end face on the tip side of bolt 262. Fixed plate 264 is made of iron, for example, and is substantially disc-shaped with a larger diameter than the head of bolt 262. Fixed plate 264 is fixed by welding, screwing, or the like in a state of contact with the head of bolt 262.

[0074] The catch 265 is made of, for example, resin or rubber, and is a generally disk-shaped member larger than the head of the bolt 262 and the fixed plate 264. The catch 265 has a space 266 that opens upward inside. The head of the bolt 262 and the fixed plate 264 are accommodated in the space 266. The catch 265 also has a plurality of operating parts 267 that allow the user to rotate the adjustment member 261 around the axis over the entire circumference of the outer circumferential surface. The operating parts 267 are concave from the outer circumferential surface toward the center of the catch 265, but are not limited to such a shape. The bottom surface of the catch 265 is not flat, but is a curved surface that is convex downward. The part of the bottom surface of the catch 265 that passes through the center line Cr is located at the lowest position. The bottom surface of the catch 265 is also formed with unevenness. Specifically, the receiving seat 265 has annular recesses 268 and annular protrusions 269 alternately formed from the center to the outer periphery around the center line Cr. The bottom surface of the receiving seat 265 has a plurality of (for example, four) countersunk portions 270 so that a fixing member 271 for fixing the receiving seat 265 to the fixing plate 264 does not protrude from the bottom surface of the receiving seat 265.

[0075] Here, in order to assemble and configure the first support unit 251a, the fixing plate 264 is fixed to the bolt 262 in advance, and the head of the bolt 262 is accommodated in the space 266 of the receiving seat 265. Next, the receiving seat 265 and the fixing plate 264 are fixed from the counterbore portion 270 of the receiving seat 265 using a screw, a rivet, or the like, to assemble the adjustment member 261. Next, the bolt 262 of the adjustment member 261 is screwed into the nut 257 of the screwing member 252 from below, and inserted into the hole 254 of the main body portion 253. Finally, the bolt 262 is inserted into the hole 263 at the tip of the bolt 262 using a screw 273 (see FIG. 1, FIG. 20A, FIG. 20B), and a washer 272 is attached to the tip of the adjustment member 261 as a retaining portion, thereby assembling the first support unit 251a. The second support unit 251b has a similar configuration to the first support unit 251a, but the direction in which the axis of the nut 257 inclines when viewed from the front-to-back direction is symmetrical with respect to the center line C of the slope portion 210 in the left-right direction. The slope device 500 can be assembled by attaching the assembled first support unit 251a and second support unit 251b to the main slope portion 211, respectively.

[0076] Next, a method for installing the slope device 500 configured as described above at a work site having a step will be described. The worker brings the slope device 500 to the work site. At this time, the adjustment member 261 of the support part 250 is in a state in which the protrusion amount from the lower side of the slope part is short. Next, the worker grounds adjustment member 261 of support portion 250 on a lower step close to the step, and grounds first slope portion 221 and second slope portion 231 of slope portion 210 on lower steps away from the step. Next, the worker advances the adjustment members 261 of the first support unit 251a and the second support unit 251b downward. For example, the worker can rotate the adjustment member 261 of the first support unit 251a using the operation unit 267 while holding up the slope device 500 with the handle portion 244R, or can rotate the adjustment member 261 of the second support unit 251b using the operation unit 267 while holding up the slope device 500 with the handle portion 244L. The worker advances and adjusts the adjustment member 261 downward so that the height of the front upper end of the front slope member 212b of the main slope portion 211 coincides with the height of the upper step of the step.

[0077] Finally, the worker can install the slope device 500 by fastening it to the lower step of the step using a bolt or the like through the hole 228 of the first slope portion 221. The method of installing the slope device 500 is not limited to the above-mentioned method, and the adjustment member 261 may be advanced downward before the slope device 500 is grounded. Also, the adjustment member 261 of the support part 250 may be left in a state in which it protrudes long from the lower side of the slope part 210, and the adjustment member 261 may be moved upward to adjust the height so that the front upper end of the front slope member 212b and the upper step of the step coincide with each other.

[0078] Next, the state in which the slope device 500 is installed will be described with reference to FIGS. 19A and 19B are rear views showing the configuration of slope device 500. Fig. 19A shows a state in which the amount of protrusion of adjustment member 261 is the shortest, i.e., the main slope portion 211 is at its lowest (lower limit of the adjustment range). On the other hand, Fig. 19B shows a state in which the amount of protrusion of adjustment member 261 is the longest, i.e., the main slope portion 211 is at its highest (upper limit of the adjustment range). In this way, by adjusting the amount of protrusion of adjustment member 261, main slope portion 211 rotates around rotating portion 214, changing the height of main slope portion 211.

[0079] 19A and 19B, the adjustment member 261 of the first support unit 251a and the adjustment member 261 of the second support unit 251b are inclined relative to the floor surface when placed on the ground. That is, the axis S of the bolt 262 of the first support unit 251a and the bolt 262 of the second support unit 251b are inclined relative to the floor surface. Specifically, in rear view, the bolts 262 of the first support unit 251a and the bolts 262 of the second support unit 251b are inclined so that the upper sides are close to each other and the lower sides are far from each other. That is, the bolts 262 of the first support unit 251a and the bolts 262 of the second support unit 251b are substantially V-shaped. Here, since the bottom surfaces of the receiving seats 265 of the first support unit 251a and the receiving seats 265 of the second support unit 251b are curved surfaces, the parts biased toward the center line C side of the slope device 500 from the center line Cr (see FIG. 18(b)) come into contact with the floor surface. When vibrations or the like are applied to the adjustment member 261 by a person or object passing on the slope section 210, the direction of the reaction force that the adjustment member 261 receives from the floor surface becomes substantially parallel to the axis line S.

[0080] Therefore, the adjustment member 261 of the first support unit 251a and the adjustment member 261 of the second support unit 251b mainly move in the tilted direction of the left-right direction. However, the adjustment member 261 of the first support unit 251a and the adjustment member 261 of the second support unit 251b are tilted symmetrically to each other, and the directions in which they move are opposite to each other, so they cannot move, and the left-right misalignment of the entire slope device 500 is suppressed. In either the state of FIG. 19A or FIG. 19B, the inclination angle of the bolts 262 of the first support unit 251a and the bolts 262 of the second support unit 251b is always constant or approximately constant.

[0081] 20A and 20B are cross-sectional views showing a part of the slope device 500. Here, the first support unit 251a will be described, but the second support unit 251b is similar. Fig. 20A shows a state in which the amount of protrusion of adjustment member 261 is the shortest, i.e., a state in which main slope portion 211 is the lowest (lower limit of the adjustment range). In the state shown in Fig. 20A, the upper end of adjustment member 261 is positioned in hole 216 of front slope member 212b. Also, because the lower end of nut 257 and the surface of fixing plate 264 of adjustment member 261 are in contact with each other, the amount of protrusion of adjustment member 261 cannot be made shorter than this state. 20B shows a state in which the amount of protrusion of adjustment member 261 is the longest, i.e., a state in which main slope portion 211 is at the highest position (upper limit of the adjustment range). In the state shown in Fig. 20B, the upper end of adjustment member 261 is positioned in hole 254 of main body portion 253 of screw-on member 252. In addition, because the upper end of nut 257 and washer 272 at the upper end of adjustment member 261 are in contact with each other, the amount of protrusion of adjustment member 261 cannot be made longer than in this state.

[0082] 20A, adjustment member 261 is inclined relative to the floor surface when in contact with the ground. That is, axis S of bolt 262 of adjustment member 261 is inclined relative to the floor surface. Specifically, in side view, bolt 262 of adjustment member 261 is inclined such that the upper side is close to the step and the lower side is away from the step, in other words, the upper side is inclined to the front side and the lower side is inclined to the rear side. From this state, by adjusting the amount of protrusion of adjustment member 261 in the advancing direction, the gradient of slope portion 210 changes, and the angle at which axis S of bolt 262 of adjustment member 261 is inclined also changes. Specifically, the angle at which axis S of bolt 262 is inclined changes so as to approach the vertical direction with respect to the floor surface.

[0083] In this embodiment, even in the state of Fig. 20B, adjustment member 261 is not vertical, but strictly speaking, is inclined slightly with respect to the floor surface when it is in contact with the ground. That is, axis line S of bolt 262 of adjustment member 261 is inclined with respect to the floor surface. Specifically, in a side view, bolt 262 of adjustment member 261 is inclined with the upper side close to the step and the lower side away from the step, in other words, with the upper side facing forward and the lower side facing backward. That is, from the lower limit to the upper limit of the adjustment range of the adjustment member 261, the axis S of the bolt 262 is inclined such that the upper side is closer to the step and the lower side is farther away from the step.

[0084] Here, since the bottom surface of the receiving seat 265 of the adjustment member 261 is a curved surface, a portion biased toward the step from the center line Cr (see FIG. 18(b)), i.e., a portion biased toward the front, comes into contact with the floor. When a person or object passes over the slope section 210 and vibration or the like is applied to the adjustment member 261, the direction of the reaction force that the adjustment member 261 receives from the floor becomes approximately parallel to the axis S. Therefore, when vibrations or the like are applied to the adjustment member 261 due to a person or object passing above, the adjustment member 261 tends to move forward in the front-rear direction, i.e., toward the step. This prevents a gap from being generated between the step and the front slope member 212b. Also, the annular convex portion 269 on the bottom surface of the receiving seat 265 contacts the floor surface in an inclined state. Therefore, the annular convex portion 269 acts in the same manner as the protrusions 226 of the anti-slip members 224 and 234, making it difficult for the annular convex portion 269 to move in a direction away from the upper step of the step, which further prevents a gap from being generated between the slope device 500 and the upper step of the step.

[0085] In this embodiment, when viewed from the side, from the lower limit to the upper limit of the adjustment range of the adjustment member 261, the axis S of the bolt 262 is inclined so that the upper side is close to the step and the lower side is away from the step. However, this is not limited to this case. For example, in a state from the lower limit of the adjustment range of the adjustment member 261 to the middle of the adjustment range, the axis S of the bolt 262 may be inclined such that the upper side is close to the step and the lower side is away from the step. Also, if the adjustment range is R, in a state from the lower limit of the adjustment range to R×3 / 4 (a range that is more than half of the adjustment range and does not include the entire adjustment range), the axis S of the bolt 262 may be inclined such that the upper side is close to the step and the lower side is away from the step. That is, in a state of the upper limit of the adjustment range, the axis S of the bolt 262 may be perpendicular to the floor surface, or may be inclined such that the upper side is away from the step and the lower side is close to the step. In this case, for example, it is possible to deal with the problem by drawing the operator's attention that the range in which the upper side of the axis S of the bolt 262 is inclined such that the lower side is away from the step and the upper side is close to the step is the adjustment range of the adjustment member 261.

[0086] Next, a case will be described in which a slope unit 600 is configured by arranging a plurality of (for example, two) slope devices 500 in parallel on the left and right. FIG. 21 is a perspective view showing the configuration of the slope unit 600. As shown in FIG. First, the worker installs the first slope device 500a, and then installs the second slope device 500b on the left side of the first slope device 500a. At this time, the worker installs the second slope device 500b from above while aligning it so that the connecting portion 242 of the second slope device 500b is connected to the connected portion 243 of the first slope device 500a. Therefore, the two slope devices 500a, 500b can be installed in parallel with almost no gap in the left-right direction, and the slope unit 600 can be configured. Here, in the entire slope unit 600, the angle members 241R, 241L, 236R, 236L are located along the front-rear direction at approximately the center in the left-right direction. Here, the angle members 241R, 241L, 236R, 236L located at approximately the center in the left-right direction correspond to an example of a linear portion. When passing through the slope unit 600, the worker can recognize the approximately center in the width direction by using the angle members 241R, 241L, 236R, 236L located at approximately the center in the width direction as an indicator. Therefore, when the worker runs a cart, for example, to pass through the slope unit 600, the cart can easily run along approximately the center in the width direction of the slope unit 600, and it is possible to prevent the cart from running off the slope unit 600. The indicator for identifying the approximate center in the width direction is not limited to the angle members 241R, 241L, 236R, and 236L, and may be applied by applying paint, attaching a sticker, or mixing a coloring agent. The indicator for identifying the approximate center in the width direction is not limited to being continuous in the front-rear direction, and may be discontinuous in the front-rear direction. Even when only one slope device 500 is installed, a linear portion may be provided along the front-rear direction at the approximate center in the width direction.

[0087] Next, the convex strips serving as anti-slip projections will be described. FIG. 22 is a side view or a cross-sectional view showing an example of a ridge 280. As shown in FIG. The convex rib 280 of this embodiment is substantially triangular. Here, the convex rib 280 is not an isosceles triangle but is a so-called sawtooth shape. Specifically, the convex rib 280 has a lower surface 281a and an upper surface 281b. Here, among the inclination angles between the convex rib 280 and the surface F of the slope portion 210, the inclination angle on the acute angle side between the lower surface 281a and the surface F of the slope portion 210 is β1. Also, the inclination angle on the acute angle side between the upper surface 281b and the surface F of the slope portion 210 is β2. In the convex rib 280 of this embodiment, the inclination angle β2 on the upper side is larger than the inclination angle β1 on the lower side.

[0088] Here, it is assumed that an operator drives a cart, for example, to pass over the upper stage of the slope section 210 of the slope device 500. Since the surface 281a of the convex strip 280 has a gentle inclination angle with respect to the surface F, there is relatively little resistance and the caster of the cart can easily get over the convex strip 280. On the other hand, after getting over the convex strip 280, the surface 281b of the convex strip 280 has a steep inclination angle with respect to the surface F and therefore creates resistance, so that the caster of the cart is restricted from moving from the surface 281b to the surface 281a. Therefore, the worker can easily move toward the upper tier on the slope section 210, while being prevented from unintentionally moving toward the lower tier after passing through. The shape of the convex strip 280 is not limited to a triangle with a corner at the apex, and may be curved. It is preferable that the convex strip 280 is provided on all of the main slope section 211, the first slope section 221, and the second slope section 231, but it may be provided on at least one of them.

[0089] The present invention has been described above in conjunction with the above-mentioned embodiments, but the present invention is not limited to only the above-mentioned embodiments, and modifications and the like are possible within the scope of the present invention, and the above-mentioned embodiments may be combined as appropriate. In the above-mentioned first embodiment, the support portion 50 has the first support portion 50a and the second support portion 50b, but the present invention is not limited to this. For example, the support portion 50 may be configured only with the second support portion 50b without the first support portion 50a. Also, for example, the support portion 50 may have first to nth support portions (n≧3). In the above-mentioned second and third embodiments, the case where the support portion 80 is configured with only one support portion 80 has been described, but the present invention is not limited to this case. For example, similar to the first embodiment, the support portion 80 may have a first support portion 80a and a second support portion 80b. Also, for example, the support portion 80 may have first to nth support portions (n≧3).

[0090] In the above-mentioned fifth embodiment, the case where the support section 250 has two support units 251a and 251b has been described, but the present invention is not limited to this case and may have three or more support units. For example, when the support section 250 has three support units, if the third support unit is the third support unit 251c, the third support unit 251c is disposed between the first support unit 251a and the second support unit 251b. In this case, in the rear view, the bolt 262 of the third support unit 251c is not inclined with respect to the floor surface but is in a state along the vertical direction, unlike the first support unit 251a and the second support unit 251b. On the other hand, in the side view, the bolt 262 of the third support unit 251c is inclined with the upper side close to the step and the lower side away from the step, similar to the first support unit 251a and the second support unit 251b. Furthermore, even when a fourth or subsequent support unit is added, it can be placed between the first support unit 251a and the second support unit 251b, and configured so that it is not inclined when viewed from the rear but is inclined when viewed from the side, similar to the bolt 262 of the third support unit 251c. [Explanation of symbols]

[0091] 10: Slope section 11: Main slope section 12: Slope member 16: Rail member 21: First slope section 22: Slope piece 31: Second slope section 41: Third slope section 50: Support section 50a: First support section 50b: Second support section 53: Swing section 54: Swing support section 58: Adjustment member 63: Swing section 64: Swing support section 68: Adjustment member 80: Support section 81: Swing section 84: Swing support section 88: Adjustment member 100: Slope device 200: Slope device 300: Slope device 400: Slope device 500: Slope device 600: Slope unit 210: Slope section 211: Main slope section 212: Slope member 217: Rail member 221: First slope portion 231: Second slope portion 250: Support portion 252: Screw-fitting member 261: Adjustment member

Claims

1. A slope portion disposed at an angle; A slope device comprising: a support portion that supports the slope portion so as to be adjustable in the height direction.

2. 2. The slope device according to claim 1, wherein the slope portion has a gradient of 1 / 6 or less and 1 / 12 or more.

3. The support portion is An adjustment member that is in contact with a floor surface; 3. The slope device according to claim 1, further comprising a screw member fixed to the slope portion and screwed into the adjustment member.

4. The adjustment member has a male thread portion, 4. The slope device according to claim 3, wherein the axis of the male thread is inclined with respect to a floor surface.

5. 5. The slope device according to claim 4, wherein, in a side view, the axis of the male screw portion is inclined so that the upper side is closer to the step and the lower side is farther away from the step.

6. The slope device according to claim 5, characterized in that, from the lower limit to the upper limit of the adjustment range of the adjustment member, the axis of the male threaded portion is inclined so that the upper side is closer to the step and the lower side is farther away from the step.

7. At least two support units each having the adjustment member and the screw member are disposed at positions spaced apart in a width direction of the slope portion, A slope device as described in any one of claims 3 to 6, characterized in that, when viewed from behind, the axes of the male threaded portions of the adjustment members in the two support units are inclined so that they are closer to each other at the upper sides and farther away from each other at the lower sides.

8. The adjustment member has a seat to be installed on a floor surface, 8. The slope device according to claim 3, wherein the bottom surface of the receiving seat is curved.

9. The slope portion has a surface on which a protrusion is formed along a width direction, 9. The slope device according to claim 1, wherein the protrusion has a sawtooth shape in a side view.

10. The slope portion has a surface on which a protrusion is formed along a width direction, A slope device as described in any one of claims 1 to 9, characterized in that, when viewed from the side, the inclination angle of the convex rib with the surface of the slope portion is larger on the upper step side than on the lower step side.

11. The slope device according to any one of claims 1 to 10, characterized in that the slope portion has a linear portion extending in the front-to-rear direction at approximately the center in the width direction and colored a color different from the color of the surface of the slope portion.

12. A slope unit comprising at least two slope devices according to any one of claims 1 to 11 connected together in a width direction.

13. The slope unit as described in claim 12, characterized in that it has a linear portion extending in the front-to-rear direction and colored a color different from the surface color of the slope portion, approximately at the center in the width direction of the two slope devices combined.

Images