JP6993657B1 - Vehicle stack prevention method in parking lot and disc-shaped reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent vehicles from getting stuck in a parking lot, provided that it is easy to restore the land to a state before use when the land has been used as a parking lot. Provide technology to reinforce the ground of parking lots. SOLUTION: This is a method of preventing vehicles from getting stuck in the parking lot by partially and reversibly reinforcing the surface layer portion of the ground of the parking lot, and preparing a plurality of disc-shaped reinforcing tools. It includes a preparatory step and a laying step of laying the prepared disc-shaped reinforcing tools on the surface of the ground of the parking lot so as to satisfy a plurality of laying conditions. The plurality of laying conditions are as follows: (a) The plurality of disc-shaped reinforcing tools are arranged so as to be discretely arranged in a row along the left tire locus and the right tire locus assumed for the vehicle. The condition includes (b) the condition that the plurality of disc-shaped reinforcing tools are arranged so as to be staggered between the left and right tire trajectories. [Selection diagram] Fig. 1

Description

The present invention relates to a technique for preventing vehicles from getting stuck in a parking lot, and more particularly to an improvement in a technique for reinforcing the ground of a parking lot.

When the land owned by the owner is likely or will be sold, the land will be idle or vacant until the sale. Therefore, the owner may temporarily manage the parking lot using the land in order to rent the land as a parking lot to the user and obtain rent income until the sale. In this case, the parking lot management may be carried out by the land owner individually or outsourced to a specialized operator.

Regardless of the type of parking lot management, the land owner wants to use the idle land as a parking lot with vacant land (for example, unpaved land where the ground remains soil), and gravel. It may be reluctant to use it as a parking lot after preparing the land such as pavement, concrete pavement, and asphalt pavement.

In this case, if the original ground of the parking lot is soft or the drainage of the ground is poor, a pool of water will form at least locally on the surface of the ground during or after bad weather such as rainfall or snowfall. The inconvenience of becoming muddy (mud) may occur.

In this way, when the parking lot becomes muddy, the tires of the vehicle lose their grip on the ground surface and the tires slip when the vehicle enters or leaves the parking lot. Eventually, it may slip and, as a result, the vehicle may get stuck in the parking lot (the vehicle cannot move), that is, it may get stuck.

By the way, as a measure to prevent the ground surface of the parking lot from slipping, there is a measure to spray cement-based solidifying material, crushed stone and gravel on the ground surface as a soil improving material (soil reinforcing material, soil strengthening material) of the original ground.

However, land owners may be reluctant to even adopt such measures because they are obsessed with using the parking lot as a complete vacant lot.

On the other hand, as a technique related to a vehicle stack, conventionally, a technique for preventing or preventing a vehicle from getting stuck (see, for example, Patent Documents 1 and 2) and a vehicle from the stack when the vehicle is stacked are used. There is a technique (see, for example, Patent Documents 3 and 4) that assists in escaping.

Specifically, Patent Document 1 describes an iron plate (continuous body) laid on a soft ground all over in order to secure a good ground such as a parking lot space in order to prevent the vehicle from slipping even on a ramp. Discloses the technology for laying.

Patent Document 2 discloses a technique of laying a road mat on soft ground in order to prevent the vehicle from slipping.

Patent Document 3 discloses a technique of inserting a band-shaped derailing escape tool between a tire of a vehicle and a road surface when the vehicle is stuck while traveling on a rough road.

Patent Document 4 provides a band-shaped tire escape tool between a vehicle's tire and the surface of the soft ground when the vehicle is stuck on soft ground such as a gravel road, a muddy road, a muddy road, or a snowy road. The technology to insert is disclosed.

In all of these Patent Documents 1-4, in order to prevent or eliminate the stacking of the vehicle, a continuum is interposed between the tire and the ground contact surface along the traveling locus of the vehicle or the traveling locus of the tire. It discloses a technology to restore the grip force of tires.

Japanese Unexamined Patent Publication No. 2016-14260 Utility Model Registration No. 3166375 Gazette Japanese Unexamined Patent Publication No. 2000-16008 Japanese Patent No. 301608

As described above, when the land owner wishes to use the parking lot as a vacant lot, the present inventor, even if the original ground of the parking lot is soft, causes the parking lot to be in the parking lot. We researched measures that can prevent vehicles from getting stuck.

As a result, the present inventor can easily dismantle and remove the parking lot by laying a simple tool on the ground surface of the parking lot by a simple operation instead of the soil improving agent at the parking lot construction stage. So that the ground of the parking lot can be completely restored to the current state while it is a work (if the tool is removed after the mission, the reinforcing effect of the tool disappears in the ground), that is, the ground of the parking lot is reversible. I realized that it was important to reinforce.

Against the background of the circumstances described above, the present invention is a technique for preventing vehicles from getting stuck in a parking lot, and when a certain land has finished being used as a parking lot, the land is restored to the state before use. The task was to provide a technique for reinforcing the ground of a parking lot on the condition that it is easy to carry out.

In order to solve the problem, according to the first aspect of the present invention, the surface layer portion of the ground of the parking lot is partially and reversibly reinforced to prevent the vehicle from being stuck in the parking lot. It ’s a method,
The preparatory process for preparing multiple disc-shaped reinforcements and
With the laying process of laying the prepared disc-shaped reinforcing tools on the surface of the ground of the parking lot so as to satisfy a plurality of laying conditions.
Including
The plurality of laying conditions are
(A) The condition that the plurality of disc-shaped reinforcing tools are arranged so as to form a discrete line along the left tire locus and the right tire locus assumed for the vehicle, respectively.
(B) The condition that the plurality of disc-shaped reinforcing tools are arranged so as to be staggered between the left and right tire trajectories.
(C) The plurality of disc-shaped reinforcements are lined up without gaps in the front-rear direction along the left tire locus and the right tire locus, respectively, or are equivalent to about 50% of the diameter of the disc-shaped reinforcements. The condition is that the tires are lined up with a gap having a size of about 30% or more and less than about 50% or a size of about 10% or more and less than about 30%.
A method for preventing vehicle stacking in a parking lot including is provided.
Further, according to the second aspect of the present invention, the surface of the ground is to be prevented from being stuck in the parking lot by partially and reversibly reinforcing the surface layer portion of the ground in the parking lot. It is a disc-shaped reinforcement laid in the
A disk portion having an upper surface and a lower surface,
With a mooring tool for mooring the disk portion to the surface layer portion
Including
The mooring tool has a shape that projects axially from the lower surface of the disk portion, but does not project radially outward from the silhouette obtained by projecting the disk portion in the axial direction.
A disk-shaped reinforcing tool configured as a hollow member that bites into the soil of the ground and exerts an anchoring effect is provided at a central portion of the mooring tool extending in the axial direction.
Each of the following aspects is obtained by the present invention. Each aspect shall be divided into sections, each section shall be numbered, and the numbers of other sections shall be quoted as necessary. This is to facilitate understanding of some of the technical features that can be adopted by the present invention and their combinations, and the technical features that can be adopted by the present invention and their combinations are limited to the following aspects. Should not be interpreted as. That is, it should be interpreted that it is not hindered from appropriately extracting and adopting the technical features described in the present specification as the technical features of the present invention, which are not described in the following aspects.

Furthermore, describing each section in the form of quoting the numbers of the other sections does not necessarily prevent the technical features described in each section from being separated and independent from the technical features described in the other sections. It does not mean, and it should be interpreted that the technical features described in each section can be made independent as appropriate according to their properties.

(1) A method of preventing vehicles from getting stuck in the parking lot by partially and reversibly reinforcing the surface layer of the ground of the parking lot.
The preparatory process for preparing multiple disc-shaped reinforcements and
The laying process of laying the prepared disc-shaped reinforcing tools on the surface of the ground of the parking lot so as to satisfy a plurality of laying conditions is included.
The plurality of laying conditions are
(A) The condition that the plurality of disc-shaped reinforcing tools are arranged so as to form a discrete line along the left tire locus and the right tire locus assumed for the vehicle, respectively.
(B) A method for preventing vehicle stacking in a parking lot, which includes a condition that the plurality of disc-shaped reinforcing tools are arranged so as to be staggered between the left and right tire loci.

(2) The plurality of laying conditions are further enhanced.
(C) The condition that each discoid reinforcement is exposed in its generally flat upper part while being moored to the ground in its lower part.
(D) The method for preventing vehicle stacking in a parking lot according to item (1), which includes at least one of the conditions that each disc-shaped reinforcing tool can be separated from the ground when an upward external force acts on it.

(3) In the laying step, when the plurality of disc-shaped reinforcing tools are placed on the surface of the ground of the parking lot and the disc-shaped reinforcing tools are viewed from the side, the disc-shaped reinforcing tools are alternately gapped. The method for preventing vehicle stacking in a parking lot according to item (1) or (2), which comprises a step of arranging the vehicles so that they are lined up without each other or arranged so as to be lined up with a gap.

(4) With a disc-shaped reinforcing tool laid on the surface of the ground to prevent vehicles from getting stuck in the parking lot by partially and reversibly reinforcing the surface layer of the ground in the parking lot. There,
A disk portion having an upper surface and a lower surface,
Includes a mooring tool for mooring the disk portion to the surface layer portion.
The mooring tool is a disk-shaped reinforcing tool having a shape that projects axially from the lower surface of the disk portion but does not project radially outward from the silhouette obtained by projecting the disk portion in the axial direction.

(5) The disk portion has a through hole penetrating in the axial direction.
The mooring tool
A cylindrical portion having an outer diameter equal to or smaller than the inner diameter of the through hole and having a length dimension longer than the thickness dimension of the disk portion.
Includes a flange that overhangs radially outward at one end of the cylinder.
The mooring tool is attached to the disk portion by inserting the cylindrical portion from the upper surface of the disk portion into the through hole until the flange abuts on the upper surface of the disk portion, whereby the cylinder portion is attached. The tip of the portion protrudes from the lower surface of the disk portion,
The disc-shaped reinforcing tool according to item (4), wherein the protruding portion of the cylindrical portion enters the ground, whereby the disc-shaped reinforcing tool is moored to the ground.

(6) The disk portion includes the upper surface and the lower surface, the outer peripheral surface, the upper circular peripheral edge between the upper surface and the outer peripheral surface, and the lower circular peripheral edge between the lower surface and the outer peripheral surface. Including,
The disk-shaped reinforcing tool according to item (4) or (5), wherein both the upper circular peripheral edge and the lower circular peripheral edge are chamfered.

(7) The disk-shaped reinforcing tool according to item (4) or (5), wherein the disk portion has an outer peripheral surface, and the outer peripheral surface has a curved surface that is convex outward in the radial direction. ..

FIG. 1 is a perspective view showing an exemplary parking lot in which a vehicle stack prevention method in a parking lot according to an exemplary embodiment of the present invention is implemented, together with an exemplary disc-shaped reinforcing tool. FIG. 2 is a perspective view representatively showing one of the plurality of disc-shaped reinforcing tools in FIG. 1. FIG. 3A is a cross-sectional view showing the disc-shaped reinforcing tool shown in FIG. 2, and FIG. 3B shows the disc-shaped reinforcing tool shown in FIG. 2 as the original ground of the parking lot shown in FIG. It is a side view which shows the use state partially buried in. FIG. 4A is for explaining how the disc-shaped reinforcing tool does not tilt because the tire of the vehicle is located near the center of the disc-shaped reinforcing tool at a certain moment in the parking lot shown in FIG. It is a side view of the above, and the figure (b) is for explaining how the disk-shaped reinforcing tool is tilted because it is located adjacent to the outline of the disk-shaped reinforcing tool at a certain moment. It is a side view of. FIG. 5A is a plan view for explaining how the plurality of disc-shaped reinforcing tools shown in FIG. 1 are arranged on the ground surface of the parking lot in an exemplary first pattern. (B) is a plan view for demonstrating how they are arranged in the exemplary second pattern. FIG. 6 is a process diagram showing an exemplary construction work and dismantling / removal work of the parking lot shown in FIG.

Hereinafter, a more specific exemplary embodiment of the present invention will be described in detail with reference to the drawings.

<Summary explanation>

In FIG. 1, an exemplary parking lot 10 in which a vehicle stack prevention method in a parking lot (hereinafter, abbreviated as “stack prevention method”) according to the present embodiment is implemented is an exemplary plurality of disc-shaped reinforcing tools. It is shown in a perspective view together with 20. A plurality of boundary ropes 12 are stretched on the ground surface of the parking lot 10, whereby the site on the ground surface of the parking lot 10 is divided into a plurality of vehicle compartments 14.

This stack prevention method is a method of partially and reversibly reinforcing the surface layer portion of the ground of the parking lot 10 (see FIG. 3B) to prevent vehicles from getting stuck in the parking lot 10. Here, the phrase "reversibly" means that if the disc-shaped reinforcing tool 20 is laid on the ground surface before reinforcement, the ground surface is reinforced, and then the disc-shaped reinforcing tool 20 is laid from the ground surface. If it is removed and recovered, it means that the ground surface will be restored to the ground surface before reinforcement.

Generally, this stack prevention method includes a preparatory step of preparing a plurality of disc-shaped reinforcing tools 20 and a laying step of laying the prepared disc-shaped reinforcing tools 20 on the surface of the ground of the parking lot 10. Has.

As shown in FIG. 1, when this stack prevention method is implemented, a plurality of disc-shaped reinforcing tools 20 are placed on the ground surface of the parking lot 10, each of the cabins 14 and the vehicle 40 (see FIG. 4). They are laid so as to be arranged in a discrete row along the assumed left tire locus and right tire locus, respectively.

<Explanation of parking lot 10>

1. 1. Location conditions of parking lot 10

The parking lot 10 is an outdoor parking lot, and when it rains or snows (including when the snow melts), the ground of the parking lot 10 may be affected by rain or snow.

2. 2. Ground (soil quality) conditions of parking lot 10

The parking lot 10 is an unpaved parking lot where the ground remains soil (mixed with pebbles, mixed with sand, etc.). The ground of this parking lot 10 is softer than the ground than the pavement surface, and drainage is poor (low permeability). Therefore, in the parking lot 10, when it rains or snows, the soil may contain water and become mud, or a puddle may occur on the ground surface layer.

3. 3. Operating conditions for parking lot 10

The parking lot 10 is a parking lot that is rented out to the user until the sale of the land owned by the owner when the land is likely to be sold or is planned to be sold. Instead of this, the parking lot 10 may be operated and used permanently as a parking lot.

In FIG. 2, one of the plurality of disc-shaped reinforcing tools 20 is typically shown in a perspective view.

<Explanation of disk-shaped reinforcing tool 20>

1. 1. Parts composition

The disk-shaped reinforcing tool 20 has a disk portion 30 and a mooring tool 32 for mooring the disk portion 30 to the surface layer portion of the ground of the parking lot 10.

2. 2. Characteristics of the material of the disc-shaped reinforcing tool 20

The disk portion 30 is made of wood, for example, and the upper surface 60 thereof is not smooth but has irregularities, so that the tire 42 of the vehicle 40 comes into contact with the upper surface 60 of the disk portion 30 as shown in FIG. Then, it is easier for the tire 42 to secure a grip force on the disk portion 30 than on a smooth surface.

On the other hand, the mooring tool 32 is made of metal or synthetic resin. When the mooring tool 32 is made of metal or synthetic resin, the material of the mooring tool 32 is slightly more complicated as having a plurality of cross sections along the axis as illustrated in FIG. It is easy to simplify the work of processing to a target shape (final shape). However, the mooring tool 32 may be made of wood.

3. 3. Characteristics related to the shape of the disc-shaped reinforcing tool 20

The disk portion 30 has an outer line generally forming a circle, an ellipse, an oval, or the like in a plan view. In any case, the disk portion 30 is defined by one or a plurality of curves so that the outline does not have a sudden change portion (for example, a corner portion) in the plan view thereof. good. That is, the disk portion 30 has an outer curvilinear property.

By the way, when the disc-shaped reinforcing tool 20 is laid and used on the ground surface of the parking lot 10, as shown in FIG. 4A, the disc-shaped reinforcing tool 20 is used at a certain moment. The possibility that the tire 42 is located near the center of the 20 and, as shown in FIG. Of each side surface of the shape reinforcing tool 20, there is a possibility that it is located in an annular region adjacent to the outer line of the disk-shaped reinforcing tool 20).

When the tire 42 is located near the center of the disc-shaped reinforcing tool 20, an eccentric load does not substantially act from the tire 42 on the disc-shaped reinforcing tool 20, and as a result, the disc-shaped reinforcing tool 20 is affected. There is virtually no moment to tilt it. In this case, as shown in FIG. 3A, the disc-shaped reinforcing tool 20 is maintained in a horizontal posture.

On the other hand, when the tire 42 is located adjacent to the outer line of the disk-shaped reinforcing tool 20, an eccentric load acts from the tire 42 on the disk-shaped reinforcing tool 20, and as a result, the disk-shaped reinforcing tool 20 An eccentric load moment is generated in the direction of tilting it. When the eccentric load moment overcomes the counter moment (counter-moment) based on the force moored by the disc-shaped reinforcing tool 20 on the ground, the disc-shaped reinforcing tool 20 is placed on the ground surface as shown in FIG. On the other hand, it shifts to a tilted posture that tilts unexpectedly.

If the unplanned tilt angle of the disc-shaped reinforcement 20 is excessive (greater than the permissible value), the upper end of the disc portion 30 of the tilted disc-shaped reinforcement 20 is the body or chassis of the vehicle 40. There is a possibility of local contact with the lower surface (outer surface, outer plate, etc.). Therefore, if the contact force at that time is excessive (greater than the permissible value), the vehicle 40 may be damaged by the disk portion 30.

In order to avoid such a situation, in the present embodiment, the disk portion 30 has an outer curvilinear property as described above. Thanks to this, even if the edge portion of the disk portion 30 locally contacts the body of the vehicle 40 or the lower surface of the chassis, the edge portion does not have a sharp portion in the face-to-face view of the disk portion 30. The degree of damage to the outer surface of the vehicle 40 is reduced as compared with the case where the portion is present (for example, when the outer line of the disk portion 30 forms a rectangle having four corner portions).

As shown in FIG. 3A , the disk portion 30 has a through hole 50 penetrating in the axial direction. On the other hand, the mooring tool 32 has a cylindrical portion 52 and a flange 54 that projects outward in the radial direction at one end of the cylindrical portion 52. The cylindrical portion 52 has an outer diameter equal to or smaller than the inner diameter of the through hole 50, and has a length dimension longer than the thickness dimension of the disk portion 30.

4. Characteristics related to the size of the disc-shaped reinforcing tool 20

In one example, the diameter of the disc portion 30 is about 300-about 500 mm for the passenger compartment 14 for ordinary passenger cars. The diameter of the disk portion 30 may be set to be different between the passenger compartment 14 for ordinary passenger cars and the passenger compartment 14 for light vehicles.

In another example, the disc portion 30 has a diameter longer than the tread width of the tire assumed for the vehicle 40 in plan view, as shown in FIG. The tread width is, for example, about 145 to about 175 mm for a light vehicle and, for example, about 185 to about 235 mm for an ordinary passenger car.

In another example, the disc portion 30, although not shown, has a diameter shorter than the tread width of the tire assumed for the vehicle 40 in plan view. At this time, the diameter of the disk portion 30 is, for example, a dimension of about 80% or more and less than about 100% of the tread width, a dimension of about 60% or more and less than about 80%, a dimension of about 40% or more and less than about 60%, or It has dimensions of about 50% or more and less than about 100%.

5. Individual (single) installation method of disk-shaped reinforcing tool 20

As shown in the side view in FIG. 3 (b), each disk-shaped reinforcing tool 20 is used alone on the original ground of the parking lot 10 (the original ground, which is the natural ground before the construction starts). It is installed so that it is partially buried and used in that state.

In one example, as shown in FIG. 3B, each disk-shaped reinforcing tool 20 is provided along the ground surface at a depth at which substantially the lower half of the disk portion 30 is embedded in the ground of the parking lot 10. Will be installed.

In another example, although not shown, each disc-shaped reinforcing tool 20 is aligned with the ground surface at a depth at which only the upper surface of the flange 54 exposed from the upper surface 60 of the disk portion 30 is exposed from the ground surface. Will be installed.

In each of these examples, at least a part of the disc portion 30 of each disc-shaped reinforcing tool 20 including the lower surface 62 and the entire mooring portion 32 are buried in the ground, whereby each The disk-shaped reinforcing tool 20 is moored to the ground.

In each of these examples, at least a part (at least the upper surface of the flange 54) of each disc-shaped reinforcing tool 20 is exposed from the ground surface. Since the exposed portion can be visually recognized by the driver of the vehicle 40 as a mark of the tire locus assumed in the passenger compartment 14, the driver can imagine the tire locus assumed in the passenger compartment 14 while driving. It is assisted to steer the vehicle 40 along it.

In one example, as shown in FIG. 3B, the mooring tool 32 of each disc-shaped reinforcing tool 20 is buried in the soil of the surface layer portion of the original ground, or penetrates the surface layer portion. Then, each disc-shaped reinforcing tool 20 is laid on the ground surface so as to enter the harder layer.

6. Characteristics of the mooring force of the disc-shaped reinforcing tool 20

The cylindrical portion 52 may be replaced with a solid member, but as in the present embodiment, if the cylindrical portion 52 is a hollow member, the weight of the cylindrical portion 52 can be reduced and the mooring force of the disk-shaped reinforcing tool 20 can be improved at the same time. Achieved.

To explain the reason why the effect of improving the mooring force can be obtained, when the disc-shaped reinforcing tool 20 is laid on the ground surface, the disc-shaped reinforcing tool 20 is illustrated as shown in FIG. 3 (b). The cylindrical portion 52 of the cylinder portion 52 bites into the soil of the ground and exerts an anchoring effect. This is because the adhesive force between the 20 and the soil increases, and thus the anchoring effect of the disc-shaped reinforcing tool 20 increases.

As shown in FIG. 2, the mooring tool 32 protrudes in the axial direction from the lower surface 62 of the disc portion 30, but does not protrude outward in the radial direction from the silhouette obtained by projecting the disc portion 30 in the axial direction. Has. In one example, the mooring tool 32 has an outer diameter smaller than the outer diameter of the disk portion 30.

As shown in FIG. 3A, the disk portion 30 has an upper surface 60 and a lower surface 62, an outer peripheral surface 70, an upper circular peripheral edge 72 between the upper surface 60 and the outer peripheral surface 70, and a lower surface 62 and an outer peripheral surface 70. It has a lower circumference 74 between and. In the present embodiment, both the upper circular peripheral edge 72 and the lower circular peripheral edge 74 are chamfered (R chamfered or C chamfered).

When the upper circular peripheral edge 72 is not chamfered, when the disk portion 30 is tilted, the upper circular peripheral edge 72 has a sudden change portion (for example, a sharp corner portion, a right angle portion) in a cross-sectional view (side view) thereof. There is a possibility that the outer plate of the vehicle 40 may be locally contacted at the portion that becomes the corner).

On the other hand, as in the present embodiment, when at least the upper circular peripheral edge 72 of the upper circular peripheral edge 72 and the lower circular peripheral edge 74 is chamfered, when the disk portion 30 is inclined, the upper circular peripheral edge 72 is chamfered. Even if the 72 locally contacts the outer surface of the vehicle 40, the degree of damage to the vehicle 40 is reduced.

In one example, in order to further reduce the possibility of damage to the vehicle 40, the cross-sectional shape of the outer peripheral surface 70 is a curved surface that is convex outward in the radial direction.

<Stack prevention method>

The stack prevention method according to the present embodiment is carried out so that the preparation step and the laying step exemplified below are carried out in the order thereof as follows.

1. 1. Preparation process

In this preparatory step, the worker prepares a plurality of disc-shaped reinforcing tools 20. In one example, each disc-shaped reinforcing tool 20 is prepared by being manufactured in the next step.

(1) Step of preparing the disk portion 30

The disk portion 30 is, for example, cut out from a material, purchased a commercially available product having the same shape as the target shape, reused a used member having the same shape as the target shape, or with respect to the obtained material. It is prepared by adding necessary post-processing.

(2) Step of preparing the mooring unit 32

The mooring portion 32 is also prepared in the same manner as the disk portion 30.

(3) Step of assembling the mooring portion 32 to the disk portion 30

The mooring tool 32 is assembled to the disk portion 30 by inserting the cylindrical portion 52 into the through hole 50 from the upper surface 60 of the disk portion 30 until the flange 54 abuts on the upper surface 60 of the disk portion 30. As a result, the tip of the cylindrical portion 52 protrudes from the lower surface 62 of the disk portion 30. The protruding portion of the cylindrical portion 52 enters the ground, whereby the disc-shaped reinforcing tool 20 is moored to the ground.

As shown in FIG. 2, in the disk-shaped reinforcing tool 20, a mounting bracket such as a fastener is not used to connect and fix the disk portion 30 and the mooring tool 32. Specifically, for example, in the process of assembling the mooring portion 32 to the disk portion 30, fasteners such as bolts are not used for bonding and fixing the two, and instead, press-fitting, screwing, bonding, welding, etc. Welding etc. are performed.

When a mounting bracket such as a fastener is used for the disc-shaped reinforcing tool 20, the mounting bracket unexpectedly loosens while the disc-shaped reinforcing tool 20 is being used, and the mounting bracket becomes the disc-shaped reinforcing tool. There is a possibility of protruding or detaching from 20. In that case, the mounting bracket exhibiting such unplanned behavior may come into contact with the outer plate of the vehicle 40 and damage the vehicle 40.

In the present embodiment, since the disc-shaped reinforcing tool 20 does not use the mounting bracket, the vehicle 40 can be prevented from being damaged due to the unplanned behavior of the mounting bracket.

2. 2. Laying process (overall installation process)

In this laying step, the worker or another worker simultaneously satisfies the plurality of laying conditions listed below on the ground surface of the parking lot 10 with the prepared plurality of disc-shaped reinforcing tools 20. To lay in.

(A) First laying condition: A condition that a plurality of disc-shaped reinforcing tools 20 are arranged so as to form a discrete line along the left tire locus and the right tire locus assumed for the vehicle 40, respectively.

(B) Second laying condition: A condition that a plurality of disc-shaped reinforcing tools 20 are arranged alternately (staggered or alternately) between the left and right tire trajectories.

It should be noted that the plurality of laying conditions are optionally further (c) Third laying condition: each disc-shaped reinforcing tool 20 is exposed in a generally flat upper portion thereof, while the lower side thereof. The condition that the part is moored to the ground of the parking lot 10 and (d) the fourth laying condition: each disc-shaped reinforcing tool 20 can be separated from the ground of the parking lot 10 when an upward external force acts on it. It may have at least one of the conditions of being present.

<Pattern for arranging a plurality of disc-shaped reinforcing tools 20>

1. 1. An exemplary first sequence pattern

FIG. 5A shows in a plan view how a plurality of disc-shaped reinforcing tools 20 are arranged on the ground surface of the parking lot 10 in an exemplary first pattern. According to this pattern, when a plurality of disc-shaped reinforcing tools 20 are viewed from the side (left-right direction) of the disc-shaped reinforcing tools 20 on the ground surface of the parking lot 10, the disc-shaped reinforcing tools 20 are viewed. Are laid so that they are lined up without gaps (without lateral overlap).

2. 2. An exemplary second array pattern

FIG. (B) shows in a plan view how a plurality of disc-shaped reinforcing tools 20 are arranged on the ground surface of the parking lot 10 in an exemplary second pattern. According to this pattern, when a plurality of disc-shaped reinforcing tools 20 are viewed from the side (left-right direction) of the disc-shaped reinforcing tools 20 on the ground surface of the parking lot 10, the disc-shaped reinforcing tools 20 are viewed. Are laid so as to be lined up with a gap g.

Here, the gap g is, for example, a dimension equivalent to about 50% of the diameter of the disc-shaped reinforcing tool 20, a dimension equivalent to about 30% or more and less than about 50%, or a dimension equivalent to about 10% or more and less than about 30%. It may have comparable dimensions.

By the way, as shown in FIG. 3B, according to an example in which a plurality of disk-shaped reinforcing tools 20 are arranged so as to be arranged alternately with respect to the left and right tire loci while being arranged with a gap g. Compared to the case where the disk-shaped reinforcing tools 20 are lined up without gaps, the number of disk-shaped reinforcing tools 20 that need to be installed in each vehicle interior 14 is reduced, and moreover, a plurality of disk-shaped reinforcing tools 20 have left and right tire trajectories. The required number of disc-shaped reinforcing tools 20 is reduced as compared with the case where they are arranged so as to be in phase with each other (so as not to be staggered).

Further, in the example shown in FIG. 3B, when the vehicle 40 is stopped in the passenger compartment 14, all four tires 42 of one vehicle 40 are reinforced in the form of any disc. Contact with the tool 20 is not always guaranteed.

However, in the example shown in FIG. 3B, the average value (standard value) (about 2,000-3,000 mm) of the wheelbase of the type of vehicle 40 that can be parked in each cabin 14 is expected to be a circle. The size of the plate-shaped reinforcing tool 20 and the pitch between the disk-shaped reinforcing tools 20 on the same tire trajectory do not allow any of the four tires 42 of the vehicle 40 to come into contact with any of the disk-shaped reinforcing tools 20. Is set so that the event does not occur.

In each vehicle compartment 14, a bollard (not shown) is fixed on the ground surface to uniquely determine the stop position of the vehicle 40. Therefore, the stop position of each tire 42 of the vehicle 40 and the disk-shaped reinforcing tool 20 The relative position with the installation position is also uniquely determined.

Then, if any of the tires 42 of the vehicle 40 comes into contact with any of the disc-shaped reinforcing tools 20, the grip force of at least one tire 42 of the vehicle 40 is secured.

This securing of grip force always occurs when the vehicle 40 is equipped with a limited slip differential (LSD) (for example, viscous LSD, rotation speed sensitive LSD), and the vehicle 40 can be started. Become.

However, even in the case of the vehicle 40 not equipped with such a function, the grip force between the tire 42 and the original ground, which is not in contact with any of the disc-shaped reinforcing tools 20, is small even if it is small. However, if it is secured, the grip force is secured and the vehicle 40 can be started.

As a result, in any case, thanks to the disc-shaped reinforcing tool 20, the vehicle 40 is prevented from being stuck in the parking lot 10.

By adopting the example shown in FIG. 3B, it is easy to minimize the number of disc-shaped reinforcing tools 20 installed in the parking lot 10 while preventing the vehicles 40 from being stuck in the parking lot 10. Will be. On the other hand, the smaller the number of the disk-shaped reinforcing tools 20, the lower the cost of the equipment called the disk-shaped reinforcing tools 20, and the smaller the man-hours and labor costs required to install the disk-shaped reinforcing tools 20. I'm done.

<General construction of parking lot 10>

FIG. 6 shows an exemplary setup work and dismantling / removal work of the parking lot 10 in a process diagram.

First, in the exemplary setup work of the parking lot 10, a process of procuring parts (disk portion 30 and mooring portion 32) of a plurality of disk-shaped reinforcing tools 20 and a plurality of assembled parts procured are plurality. The step of acquiring the disk-shaped reinforcing tool 20 and the step of laying the acquired plurality of disk-shaped reinforcing tools 20 on the ground surface of the parking lot 10 are carried out in this order.

As a result, the ground of the parking lot 10 is partially (that is, only the portion where each disc-shaped reinforcing portion 20 is located) and is reversibly reinforced without spraying the soil conditioner.

Next, in the exemplary dismantling and removal work of the parking lot 10, a removal step of removing a plurality of disc-shaped reinforcing tools 20 from the ground surface of the parking lot 10 and collecting them is carried out.

As described above, each disk-shaped reinforcing tool 20 is laid on the ground surface so that it can be separated from the ground of the parking lot 10 when an upward external force acts on it.

Therefore, the operator can pull up or pull out each disc-shaped reinforcing tool 20 from the ground surface, usually with bare hands, without performing additional work and without requiring the use of tools. Each disk-shaped reinforcing tool 20 can be easily removed from the ground surface.

As a result, the parking lot 10 is easily and completely restored to the vacant lot, and the owner of the land can use the vacant lot for another purpose, for example.

As described above, some of the exemplary embodiments of the present invention have been described in detail with reference to the drawings, but these are examples, and those skilled in the art including the embodiments described in the above [Summary of the invention] column. It is possible to carry out the present invention in other forms with various modifications and improvements based on knowledge.

Claims (7)

It is a method of preventing vehicles from getting stuck in the parking lot by partially and reversibly reinforcing the surface layer of the ground of the parking lot.
The preparatory process for preparing multiple disc-shaped reinforcements and
The laying process of laying the prepared disc-shaped reinforcing tools on the surface of the ground of the parking lot so as to satisfy a plurality of laying conditions is included.
The plurality of laying conditions are
(A) The condition that the plurality of disc-shaped reinforcing tools are arranged so as to form a discrete line along the left tire locus and the right tire locus assumed for the vehicle, respectively.
(B) The condition that the plurality of disc-shaped reinforcing tools are arranged so as to be staggered between the left and right tire trajectories.
(C) The plurality of disc-shaped reinforcements are lined up without gaps in the front-rear direction along the left tire locus and the right tire locus, respectively, or are equivalent to about 50% of the diameter of the disc-shaped reinforcements. The condition is that the tires are lined up with a gap having a size of about 30% or more and less than about 50% or a size of about 10% or more and less than about 30%.
How to prevent vehicle stacking in parking lots, including. The plurality of laying conditions further
(D) The condition that each discoid reinforcement is exposed in its generally flat upper part while being moored to the ground in its lower part.
(E) The method for preventing vehicle stacking in a parking lot according to claim 1, wherein each disc-shaped reinforcing tool includes at least one of the conditions that the disc-shaped reinforcing tool can be separated from the ground when an upward external force acts on it. In the laying step, when the plurality of disc-shaped reinforcing tools are placed on the surface of the ground of the parking lot and the disk-shaped reinforcing tools are viewed from the side, whether the disk-shaped reinforcing tools are arranged alternately and without gaps. Or, the method for preventing vehicle stacking in a parking lot according to claim 1 or 2, which comprises a step of laying the vehicles so as to be lined up with a gap. A disc-shaped reinforcing tool laid on the surface of the ground to prevent vehicles from getting stuck in the parking lot by partially and reversibly reinforcing the surface layer of the ground in the parking lot.
A disk portion having an upper surface and a lower surface,
Includes a mooring tool for mooring the disk portion to the surface layer portion.
The mooring tool has a shape that projects axially from the lower surface of the disk portion, but does not project radially outward from the silhouette obtained by projecting the disk portion in the axial direction .
The central part of the mooring tool extending in the axial direction is a disk-shaped reinforcing tool configured as a hollow member that bites into the soil of the ground and exerts an anchoring effect . The disk portion has a through hole penetrating in the axial direction.
The mooring tool
A cylindrical portion having an outer diameter equal to or smaller than the inner diameter of the through hole and having a length dimension longer than the thickness dimension of the disk portion.
Includes a flange that overhangs radially outward at one end of the cylinder.
The mooring tool is attached to the disk portion by inserting the cylindrical portion from the upper surface of the disk portion into the through hole until the flange abuts on the upper surface of the disk portion, whereby the cylinder portion is attached. The tip of the portion protrudes from the lower surface of the disk portion,
The disc-shaped reinforcing tool according to claim 4, wherein the protruding portion of the cylindrical portion enters the ground, whereby the disc-shaped reinforcing tool is moored to the ground. The disk portion includes an upper surface and a lower surface, an outer peripheral surface, an upper circular peripheral edge between the upper surface and the outer peripheral surface, and a lower circular peripheral edge between the lower surface and the outer peripheral surface.
The disk-shaped reinforcing tool according to claim 4 or 5, wherein both the upper circular peripheral edge and the lower circular peripheral edge are chamfered. The disk-shaped reinforcing tool according to claim 4 or 5, wherein the disk portion has an outer peripheral surface, and the outer peripheral surface has a curved surface that is convex outward in the radial direction.

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