Parking device for prevention of flood damage

Abstract

To provide a parking device for prevention of flood damage capable of setting an upper surface of a pallet to be flush with the ground surface and returning the pallet floating on the water surface upon the flood damage to an original position after water retreats, with the same space as that of a normal parking lot without damaging a landscape.SOLUTION: A parking device is provided with: a pallet 3 on which a vehicle is loaded; a float 4 provided on a lower surface of the pallet 3; a pit 6 excavated in a ground surface 5 of a parking lot in a concave shape with a depth larger than at least sizes in a vertical direction of the float 4 corresponding to the shape of the pallet 3 in plan view; a water guide port 7 guiding water flowing on the ground to the pit 6; a pallet side guide 8 extending downward from the pallet 3; and pit side guides 9 provided in a vertical direction on the pit 6 so as to engage with the pallet side guide 8. The pallet 3 and the float 4 are received in the pit 6 and the upper surface of the pallet 3 is flush with the ground surface 5 of the parking lot.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a flood prevention parking device that floats automobiles in the event of a flood. [Background technology]

[0002] Conventionally, a known flood-prevention parking device has a pallet on top of which a car is parked that houses a float inside, and the float-equipped pallet is placed on the ground of the parking lot (see Patent Documents 1 and 2). With this flood-prevention parking device, when a large amount of water flows over the ground of the parking lot during a flood such as heavy rain or flooding, the pallet floats up due to the buoyancy of the float housed inside, protecting the car parked on top of the pallet from flood damage. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 5695159 [Patent Document 2] Patent No. 6315370 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional flood prevention parking equipment used pallets with a specified thickness that contained floats placed on the ground, meaning that the top surface of the pallet (vehicle loading surface) was higher than the ground of the parking lot, making it necessary to have a slope connecting the ground and the top surface of the pallet (vehicle loading surface).

[0005] Here, the float needs to have a certain volume because it needs buoyancy to lift the weight of the vehicle so that it does not sink, and considering the planar area of ​​the pallet, the vertical dimension must be somewhat large. If a pallet containing floats of this size is to be placed in a parking lot with limited space, such as a detached house in an urban area, the slope leading to it must be set to a steep incline according to the height of the float in order to fit the pallet and the slope leading to it within the parking lot of the detached house.

[0006] As a result, when moving a car from the road onto the top surface (vehicle loading surface) of a pallet placed in a parking lot of a detached house and parking it, it is necessary to go up a steep slope, which makes driving operations such as switching between the accelerator and brake pedals complicated. This requires a certain level of driving skill, and it is possible that parking will be difficult for beginner drivers, and may lead to them stepping on the wrong pedal.

[0007] Furthermore, in the parking device described in Document 1, the pallet is connected to the ground by a string such as a rope, chain, or wire. Therefore, when the pallet rises due to the buoyancy of the float contained inside it during a flood such as heavy rain or flooding, the raised pallet moves freely within the length of the string, and does not return to its original position when the water subsides.

[0008] On the other hand, in the parking device described in Document 2, the pallet floats up due to internal floats during floods or other water damage, and is raised and lowered along guide posts erected on the ground at the four corners of the pallet. Therefore, the pallet that floats up along the guide posts during floods will descend along the guide posts and return to its original position when the water subsides.

[0009] However, space is required to erect the guide columns on the ground at the four corners of the pallet, and it may be difficult to erect the guide columns in parking lots with limited space, such as those found in detached houses in urban areas. Also, the four erected guide columns spoil the view of the detached house, including the parking lot. These factors lead to users being hesitant to adopt this system.

[0010] The object of the present invention, which was devised in consideration of the above circumstances, is to provide a flood prevention parking device that can set the top surface of the pallet (vehicle loading surface) flush with the ground, making parking easy, that can return pallets that float up during floods such as heavy rain or flooding to their original position after the water has subsided, that requires the same installation space as a normal parking lot, and that does not spoil the scenery. [Means for solving the problem]

[0011] According to the present invention, which was devised to achieve the above-mentioned object, there is provided a parking device for flood prevention that floats automobiles in the event of a flood, comprising a pallet on the upper surface of which the automobile is placed, a float arranged on the underside of the pallet, a pit recessed into the ground of the parking lot that matches the shape of the pallet in a plan view and has a depth at least equal to the vertical dimension of the float, a water inlet that directs water flowing on the ground of the parking lot into the pit, a pallet side guide extending downward from the pallet, and a pit side guide arranged in the vertical direction in the pit so as to engage with the pallet side guide, and under normal circumstances, the pallet and float are stored in the pit with the upper surface of the pallet flush with the ground of the parking lot, and in the event of a flood, as water flows into the pit from the inlet, the buoyancy of the float causes the pallet to be guided by the pit side guide and pallet side guide, and to float above the ground of the parking lot.

[0012] In the flood prevention parking device of the present invention, when the top surface of the pallet is normally in a state where it is in contact with the ground of the parking lot, a spacer may be provided on at least one of the pit, float, and pallet to form a predetermined gap between the float arranged on the underside of the pallet and the bottom of the pit.

[0013] In the parking device for flood prevention of the present invention, a drain outlet for draining water from the pit is provided on the bottom of the pit, and the drainage capacity of the drain outlet may be set so that when water flows into the pit at a flow rate per unit time during normal rainfall, water does not accumulate in the pit, and when a considerable amount of water flows into the pit at a flow rate per unit time during flooding, only a portion of the water that flows in is drained and the rest accumulates in the pit.

[0014] In the parking device for flood prevention according to the present invention, a drain outlet is provided on the bottom of the pit to drain water from the pit, and the drain outlet is connected to a storm water pipe or sewer pipe below the pit, so that when the storm water pipe or sewer pipe becomes full and backflows during a flood such as heavy rain or flood, the backflowing rainwater or sewage flows into the pit through the drain outlet, causing the float to float up. [Effects of the Invention]

[0015] The flood-prevention parking device according to the present invention can achieve the following effects. (1) The pallet and the floats attached to its underside are housed in a pit recessed into the ground of the parking lot, ensuring sufficient buoyancy volume for the floats. This allows the top surface of the pallet (vehicle loading surface) to be flush with the ground, eliminating the need for a slope to connect the top surface of the pallet (vehicle loading surface) to the ground of the parking lot. This makes parking easier. Furthermore, since no ramp installation space is required, this system is suitable for narrow parking lots, such as those for detached houses in urban areas. (2) In the event of flooding, such as heavy rain or flooding, the pallet and float carrying the automobile will rise, guided by the pallet guides on the pallet and the pit guides on the pit, and after the water subsides, will descend, guided by the pallet guides and the pit guides. Therefore, the pallet that rose from the pit during the flood can be returned to the pit properly after the flood. (3) Because the pallet-side guide extends downward from the pallet and the pit-side guide is installed vertically in the pit, there is no need to install guide posts on the ground at the four corners of the pallet to guide the pallet up and down as in the past. This means that the appearance is not marred and the installation space can be reduced because the space required for installing the guide posts is no longer required. (4) The pallet and the pit on its underside that houses the float are formed to match the shape of the pallet in a plan view, so the installation space is equivalent to that of a normal parking lot. (5) In summary, the flood-prevention parking device of the present invention allows the upper surface of the pallet (vehicle loading surface) to be set flush with the ground, making parking easy, and pallets that float up during floods or other water damage can be returned to their original position after the water subsides. The installation space is equivalent to that of a normal parking lot, and does not spoil the scenery. Therefore, it is suitable for narrow parking lots such as those for detached houses in urban areas. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view showing an overview of a flood-prevention parking device according to a first embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view taken along line AA in FIG. 1 (normal state). [Figure 3] This is a cross-sectional view showing the state in which a pallet begins to float up during a flood. [Figure 4] This is a cross-sectional view showing the pallet further floating up during flood damage. [Figure 5] FIG. 5 is a cross-sectional view of a flood-prevention parking device according to a second embodiment of the present invention. [Figure 6] FIG. 10 is a cross-sectional view showing the state in which the pallet begins to float up during flood damage in the second embodiment. [Figure 7] FIG. 10 is a cross-sectional view showing the state in which the pallet has further floated up during flood damage in the second embodiment. [Figure 8] FIG. 10 is a cross-sectional view showing a third embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0017] Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Dimensions, materials, and other specific values ​​shown in the embodiments are merely examples for facilitating understanding of the invention and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are designated by the same reference numerals to avoid redundant explanation, and elements not directly related to the present invention are not shown.

[0018] (First embodiment: Overview of a parking device for flood prevention) As shown in Figures 1 and 2, the flood prevention parking device 1 of the first embodiment of the present invention floats an automobile 2 in the event of a flood, and comprises a pallet 3 on whose upper surface the automobile 2 is placed, a float 4 arranged on the underside of the pallet 3, a pit 6 recessed into the ground 5 of the parking lot so that it matches the shape of the pallet 3 in a plan view and has a depth at least equal to the vertical dimension of the float 4, a water outlet 7 that guides water flowing through the ground 5 of the parking lot into the pit 6, a pallet side guide 8 extending downward from the pallet 3, and a pit side guide 9 arranged in the vertical direction in the pit 6 so as to engage with the pallet side guide 8.

[0019] Furthermore, in the flood prevention parking device 1 according to the first embodiment, as shown in Fig. 2, under normal circumstances, the pallet 3 and float 4 are housed in a pit 6 with the top surface of the pallet 3 flush with the ground 5 of the parking lot, and in the event of a flood, as water flows into the pit 6 from the inlet 7 in Fig. 1, the pallet 3 on which the automobile 2 is placed is guided by the pit-side guide 9 and the pallet-side guide 8 due to the buoyancy of the float 4, and rises above the ground 5 of the parking lot, as shown in Figs. 3 and 4. Each component will be described below.

[0020] (Palette 3) As shown in Figures 1 and 2, the pallet 3 includes a rectangular loading plate 3a (in a plan view) on which the automobile 2 is placed; side plates 3b extending downward from both widthwise ends (left and right ends) of the loading plate 3a; multiple (three in this embodiment) vertical plates 3c spaced apart between the left and right side plates 3b; and a bottom plate 3d connecting the lower ends of the left and right side plates 3b. The loading plate 3a has a trapezoidal convex portion 3e extending upward from the center of the widthwise direction along the vehicle length (front-to-rear direction), enhancing its strength. The upper end of the vertical plate 3c is fixed to the lower surface of the loading plate 3a and its lower end is fixed to the upper surface of the bottom plate 3d, functioning as a load support member to support the weight of the automobile 2 placed on the loading plate 3a. The side plates 3b also function as a load support member and, as shown in Figure 3, as a guide for the side wall 6a of the pit 6 when the pallet 3 rises from the pit 6 during a flood. The bottom plate 3, the side plates 3b and the vertical plates 3c may be omitted, and the float 4 may be fixed to the lower surface of the mounting plate 3a.

[0021] (float 4) As shown in Figures 1 and 2, a float 4 is disposed on the underside of the pallet 3. In this embodiment, the float 4 is composed of a hollow bale 4a with air sealed inside. A plurality of floats 4 are accommodated and fixed in a space defined by the support plate 3a, side plates 3b, vertical plates 3c, and bottom plate 3d of the pallet 3. The volume of the float 4, i.e., the volume of all the hollow bales 4a, is set to a volume that, when a vehicle 2 is placed on the top surface of the support plate 3a of the pallet 3, provides sufficient buoyancy to float the vehicle above the water surface WL in the event of a flood, as shown in Figures 3 and 4. The shape of the float 3 is not limited to the hollow bale 4a, but may be various hollow bodies such as a hollow sphere or a hollow rectangular parallelepiped. The hollow body constituting the float 4 may be made of a material such as resin or metal, and the interior of the hollow body may be filled with air or a material with a specific gravity lower than water, such as expanded polystyrene or urethane. In Figure 1, the front and rear openings of the pallet 3 in the vehicle length direction can be watertightly covered with cover plates (not shown), and the internal space of the pallet 3 partitioned by the loading plate 3a, side plate 3b, bottom plate 3d and cover plate can be made watertight, and this internal space can be made into a float 4.

[0022] (Pit 6) As shown in Figures 1 and 2, a pit 6 is provided in the ground 5 of the parking lot. The pit 6 is recessed to a depth at least equal to the vertical dimension of the float 4 and conforms to the shape of the pallet 3 in a plan view. The pit 6 is a roughly rectangular recess slightly larger than the dimensions of the pallet 4, and is filled with concrete or the like to make it watertight. As shown in Figure 2, the pit 6 normally contains the pallet 3 and float 4, and at this time, the upper surface of the loading plate 3a of the pallet 3 (the vehicle loading surface) is aligned with the ground 5 of the parking lot. Here, "aligned" includes a height difference of several centimeters that does not interfere with driving when the vehicle 2 moves from the ground 5 to the loading plate 3a or from the loading plate 3a to the ground 5, and does not only mean a case where the height difference between the loading plate 3a and the ground 5 is completely zero.

[0023] (Water intake 7) As shown in Figure 1, a water conduit 7 is formed in the ground 5 of the parking lot near the pit 6 to direct water flowing through the ground 5 of the parking lot into the pit 6. Below the water conduit 7, a recess 10 is formed with concrete or the like to be watertight and connected to the pit 6. A water passage cover 11 made of grating, perforated steel plate, expanded metal or the like is detachably attached to the water conduit 7. In this embodiment, the water conduits 7 are arranged on each of the four sides of the pit 6 when viewed from above, but it is sufficient that they are arranged on at least one side of the pit 6.

[0024] (Pallet side guide 8) As shown in Figures 1 and 2, a pallet side guide 8 is provided on the underside of the pallet 3, extending downward. The pallet side guide 8 consists of cylinders 8a extending downward from the underside of the bottom plate 3d of the pallet 3. In this embodiment, a total of four cylinders 8a are arranged on the underside of the bottom plate 3d of the pallet 3 at intervals in the vehicle width direction and vehicle length direction, but any number of cylinders greater than three will do. This is because at least three cylinders allow the pallet 3 to be raised and lowered while ensuring that the pallet 3 is level. The cylinders 8a may be either solid or hollow.

[0025] (Pit side guide 9) As shown in Figures 1 and 2, the pit 6 is provided with a pit-side guide 9 that extends in the vertical direction and engages with the pallet-side guide 8. The pit-side guide 8 consists of a cylinder 9a that extends downward from the bottom surface of the pit 6, and a column 8a that forms the pallet-side guide 8 is inserted into the cylinder 9a from above. The inner diameter of the cylinder 9a is set slightly larger than the outer diameter of the column 8a, so that the column 8a inserted into the cylinder 9a can move up and down smoothly. The pit-side guide 9 may also be provided on the side wall 6a of the pit 6, extending in the vertical direction.

[0026] (Spacer 12) As shown in FIG. 2, when the upper surface of the pallet 3 (the upper surface of the mounting plate 3a) is normally in a state where it is in contact with the ground 5 of the parking lot, a spacer 12 is provided on the bottom surface 6b of the pit 6 to form a predetermined gap G between the float 4 provided on the pallet 3 and the bottom surface 6b of the pit 6, as shown in FIGS. 1 and 2. In this embodiment, the spacer 12 consists of a frame-shaped protrusion 12a formed on the bottom surface 6b of the pit 6. As shown in FIG. 2, when the upper surface of the mounting plate 3a of the pallet 3 is normally in a state where it is in contact with the ground 5 of the parking lot, the lower surface of the bottom plate 3d of the pallet 3 rests on the protrusion 12a, so that a gap G is formed between the lower surface of the bottom plate 3d of the pallet 3 and the bottom surface 6b of the pit 6.

[0027] In FIG. 2, if the bottom plate 3d of the pallet 3 is omitted, the lower end of the float 4 (hollow bale 4a) fixed to the underside of the pallet 3 will rest on the convex portion 12a of the spacer 12, forming a predetermined gap G between the lower end of the float 4 (hollow bale 4a) and the bottom surface 6b of the pit 6. Furthermore, the spacer 12 is not limited to the convex portion 12a formed in a frame shape, but may be a plurality of convex portions that support the underside of the bottom plate 3d of the pallet 3 at intervals in the width direction and the length direction of the vehicle. Furthermore, the installation location of the spacer 12 is not limited to the bottom surface 6b of the pit 6. As long as the predetermined gap G is formed under normal conditions as shown in FIG. 2, the spacer 12 may be provided in at least one of the pit 6, float 4, and pallet 3.

[0028] (Drain port 13) As shown in Figures 1 and 2, a drain outlet 13 for draining water from the pit 6 is provided on the bottom surface 6b of the pit 6, and the bottom surface 6b of the pit 6 is sloped downward toward the drain outlet 13. A drain pipe 14 extending downward is connected to the drain outlet 13, and the lower end of the drain pipe 14 is connected to a storm sewer pipe or sewer pipe (hereinafter also referred to as a storm sewer pipe, etc. 15). The drainage capacity of the drain outlet 13 is set so that when a flow rate of water per unit time during normal rainfall flows into the pit 6, the water does not accumulate in the pit 6, and when a considerable amount of water flows into the pit 6 at a flow rate per unit time (a flow rate that could submerge a car 2 on a pallet 3) during a flood, only a portion of the water that flows in is drained and the rest is accumulated in the pit 6.

[0029] As shown in FIG. 2 , in this embodiment, the drain outlet 13 is provided with a throttle portion 16 that reduces the passage area (drainage area). The passage area (drainage area) of the throttle portion 16 is adjusted so that when a normal amount of water flows into the pit 6 at a flow rate per unit time during normal precipitation, the throttle portion 16 drains the water so as not to accumulate in the pit 6, and when a significant amount of water flows into the pit 6 at a flow rate per unit time during a flood (a flow rate that could submerge the automobiles 2 on the pallets 3), the throttle portion 16 drains only a portion of the water that flows into the pit 6 and accumulates the rest in the pit 6. Here, the flow rate per unit time that could submerge the automobiles 2 on the pallets 3 during the aforementioned flood is considered to vary depending on the geographical conditions (high or low elevation, etc.) of the area where the flood-resistant parking device 1 according to this embodiment is installed and the level of flood prevention measures (presence or absence of an underground water tank, etc.). For this reason, the throttle portion 16 is detachably attached to the drain outlet 13, and a throttle portion 16 with an appropriate passage area can be installed according to the actual conditions of the area.

[0030] (Pallet 3 floating during flooding) During normal rainfall, when water flows into the pit 6 from the water inlet 7 shown in Figure 1 at a flow rate per unit time during normal precipitation, all of the water (rainwater) that flows into the pit 6 is drained through the drainage outlet 13, and water does not accumulate within the pit 6. Therefore, as shown in Figure 2, the pallet 3 and float 4 do not float up due to the water in the pit 6, and the pit can be used as a normal parking lot. On the other hand, during floods, heavy rain, or other water damage, if a considerable amount of water (a flow rate per unit time that would submerge the automobile 2 on the pallet 3) flows into the pit 6 from the water inlet 7 shown in Figure 1, only a portion of the water that flows into the pit 6 is drained through the drainage outlet 13, and the rest accumulates within the pit 6, and water accumulates in the space formed by the gap G between the bottom surface 6b of the pit 6 and the underside of the bottom plate 3d of the pallet 3 shown in Figure 2. As a result, as shown in Figures 3 and 4, the float 4 floats up due to the water in the pit 6, and the automobile 2 placed on the pallet 3 is protected from flooding.

[0031] (Actions and Effects) According to the parking device 1 for flood prevention in this embodiment, the following effects can be achieved.

[0032] As shown in Figures 1 and 2, the pallet 3 and the float 4 attached to its underside are housed in a pit 6 recessed into the ground 5 of the parking lot. This allows the float 4 to have sufficient buoyancy volume, while the top surface of the pallet 3 (the vehicle-carrying surface of the loading plate 3a) can be set flush with the ground 5. This eliminates the need for a slope to connect the top surface of the pallet 3 (the vehicle-carrying surface of the loading plate 3a) to the ground 5 of the parking lot, as in conventional cases. This makes parking easier. Furthermore, because no installation space for a slope is required, the system can be used in narrow parking lots for detached houses in urban areas.

[0033] As shown in Figures 3 and 4, in the event of flooding such as heavy rain or flooding, the pallet 3 and float 4 on which the automobile 2 is placed rises, guided by the pallet side guides 8 provided on the pallet 3 and the pit side guides 9 provided in the pit 6, and after the water subsides, they descend, guided by the pallet side guides 8 and the pit side guides 9. Thus, the pallet 3 that rises from the pit 6 during flooding can be properly returned to the pit 6 after the flooding.

[0034] As shown in Figure 1, the pallet side guide 8 extends downward from the pallet 3, and the pit side guide 9 is installed vertically in the pit 6. This eliminates the need to erect guide posts on the ground 5 at the four corners of the pallet 3 to guide the pallet 3 up and down, as in the conventional example (Reference 2). This does not spoil the scenery, and no space is required for erecting the guide posts. This reduces installation space and makes the system applicable to narrow parking lots for detached houses in urban areas.

[0035] As shown in Figure 1, the pallet 3 and the pit 6 for accommodating the float 4 attached to its underside are formed to match the shape of the pallet 3 in a plan view, so the installation space is equivalent to that of a regular parking lot. Therefore, it is suitable for narrow parking lots such as those for detached houses in urban areas.

[0036] In summary, with the flood-prevention parking device 1 according to this embodiment, the upper surface of the pallet 3 (the vehicle-placing surface of the loading plate 3a) can be set flush with the ground 5 of the parking lot, making parking easy; pallets 3 that float up during floods such as heavy rain or flooding can be returned to their original position properly after the water subsides; the installation space is equivalent to that of a normal parking lot, and the scenery is not marred. These may motivate users to adopt the flood-prevention parking device 1 according to this embodiment.

[0037] (Second embodiment) 5 to 7 show a flood-prevention parking device 1a according to a second embodiment of the present invention. The flood-prevention parking device 1a according to the second embodiment is basically similar in configuration to the first embodiment described above. Therefore, the same components are designated by the same reference numerals, and their explanations are omitted. Only the differences are described. The difference is that the throttle portion 16 provided at the drain outlet 13 in FIG. 2 in the first embodiment is absent (see FIG. 5). Therefore, when water 17 (rainwater or sewage) inside the storm drain pipe 15 (storm drain or sewer pipe) becomes full during a flood such as heavy rain or flooding and backflows (see FIGS. 6 and 7), the backflowing water 17 rises inside the drain pipe 14 and flows into the pit 6 through the drain outlet 13, causing the float 4 to float up. The basic operational effects of the second embodiment are similar to those of the first embodiment, and therefore explanations are omitted.

[0038] (Third embodiment) FIG. 8 shows a flood-preventing parking device 1b according to a third embodiment of the present invention. The flood-preventing parking device 1b according to the third embodiment is configured by adding the throttle portion 16 of the first embodiment to the drain outlet 13 of the second embodiment. According to the third embodiment, as in the second embodiment, the float 4 floats up when water 17 (rainwater or sewage) inside the storm drain pipe or the like 15 (storm drain or sewer pipe) becomes full and backflows (see FIGS. 6 and 7 ) into the pit 6 from the drain outlet 13 during a flood. Even if backflow does not occur, as in the first embodiment, when a significant amount of water flows into the pit 6 from the water conduit 7 at a flow rate per unit time (a flow rate sufficient to submerge the automobiles 2 on the pallet 3) during a flood, the throttle portion 16 drains only a portion of the water that flows in and stores the rest in the pit 6 (see FIGS. 3 and 4 ). This allows the float 4 to float up. That is, according to the third embodiment, the effects of the first embodiment and the second embodiment can be exerted in a combined manner.

[0039] While preferred embodiments of the present invention have been described above with reference to the accompanying drawings, it goes without saying that the present invention is not limited to the above-described embodiments, and various modifications and alterations within the scope of the claims also fall within the technical scope of the present invention. For example, in the normal state shown in Figure 2, the height difference between the loading plate 3a and the ground 5 is not limited to being completely zero, but may include a height difference of several centimeters that does not interfere with driving when the automobile 2 travels from the ground 5 to the loading plate 3a or vice versa. In this case, although a slope is required to connect the ground 5 and the loading plate 3a, a very gentle and short slope is sufficient, and the slope does not significantly increase the installation area. [Industrial Applicability]

[0040] To provide a flood prevention parking device that floats automobiles during floods, in which the top surface of a pallet on which an automobile is placed can be set flush with the ground, facilitating parking, and the pallet that floats during floods such as heavy rain or flooding can be returned to its original position appropriately after the water subsides, and which requires the same installation space as a normal parking lot and does not spoil the scenery. [Explanation of symbols]

[0041] 1. Parking equipment for flood prevention 2. Automobiles 3 palettes 4. Float 5 ground 6 Pit 7 Water Inlet 8 Pallet side guide 9 Pit side guide 12 spacers 13 Drain 15 Storm drains or sewer pipes G interval

Claims

1. A flood prevention parking device that floats cars during floods. The parking lot comprises a pallet on the upper surface of which an automobile is placed, a float disposed on the underside of the pallet, a pit recessed into the ground of the parking lot to match the shape of the pallet in a plan view and to a depth at least equal to the vertical dimension of the float, a water outlet for guiding water flowing on the ground of the parking lot into the pit, a pallet-side guide extending downward from the pallet, and a pit-side guide disposed in the vertical direction in the pit so as to engage with the pallet-side guide, This parking device for flood prevention is characterized in that under normal circumstances, the pallet and the float are stored in the pit and the top surface of the pallet is flush with the ground of the parking lot, and in the event of a flood, as water flows into the pit from the inlet, the buoyancy of the float causes the pallet to be guided by the pit side guide and the pallet side guide, and to float above the ground of the parking lot.

2. A parking device for flood prevention as described in claim 1, characterized in that under normal circumstances, when the top surface of the pallet is in a state where it is in contact with the ground of the parking lot, a spacer is provided on at least one of the pit, the float, and the pallet to form a predetermined gap between the float arranged on the underside of the pallet and the bottom of the pit.

3. A parking device for flood prevention as described in claim 1 or 2, characterized in that a drain outlet for draining water from the pit is provided on the bottom of the pit, and the drainage capacity of the drain outlet is set so that when water flows into the pit at a flow rate per unit time during normal rainfall, water is drained so that water does not accumulate in the pit, and when a considerable amount of water flows into the pit at a flow rate per unit time during flooding, only a portion of the water that flows in is drained and the rest is accumulated in the pit.

4. A parking device for flood prevention as described in claim 1 or 2, characterized in that a drain outlet for draining water from the pit is provided on the bottom surface of the pit, and the drain outlet is connected to a storm water pipe or sewer pipe below the pit, and when the storm water pipe or sewer pipe becomes full and backflows during a flood such as heavy rain or flood, the backflowing rainwater or sewage flows into the pit through the drain outlet and causes the float to float up.

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