WO2018070512A1

WO2018070512A1 - Land-lock gate

Info

Publication number: WO2018070512A1
Application number: PCT/JP2017/037155
Authority: WO
Inventors: 俊明森井; 幸治白山; 大塚　真之; 和也関本
Original assignee: 日立造船株式会社
Priority date: 2016-10-14
Filing date: 2017-10-13
Publication date: 2018-04-19
Also published as: JPWO2018070512A1; JP6899396B2

Abstract

This land-lock gate is provided with: a door body (2) that is hoisted by being rotated about a hoisting axial center (20); and a floor plate (38) that is arranged adjacently to the hoisting axial center (20) side of the door body (2) in an un-hoisted state. A groove (7) is formed between the end surface (72) of the door body (2) and the end surface (73) of the floor plate (38). The land-lock gate is further provided with a filling material (8) filling the groove (7). The filling material (8) is fixed to the end surface (72) of the door body (2) and the end surface (73) of the floor plate (38) between which the groove (7) is formed. The filling material (8) has elasticity, and is raised higher than the lower one of the upper ends of the end surfaces (72, 73) when the groove 7 becomes narrower due to raising of the door body (2).

Description

Landlock gate

The present invention relates to a undulating land gate in which the door body falls down to form a road surface during normal times, and the door body stands up and blocks water in an emergency where the water surface is higher than the road surface.

The undulating land gate has the advantage of a relatively simple structure that undulates with the base end side of the door body as the turning center. In particular, in the type in which the door body stands by buoyancy from water, the door body automatically stands up in an emergency, so that the operator's operation becomes unnecessary. For this reason, such undulating landlock gates are attracting attention in countries with a high awareness of disaster prevention.

Japanese Unexamined Patent Publication No. 2013-238091

Generally, in a undulating land gate, a configuration is adopted in which the groove formed on the base end side of the door body becomes narrower by the standing of the door body when the door body stands up. And since the door body is exposed to the field because of the characteristic of the land gate that the door body constitutes the road surface in normal times, foreign matter such as gravel may enter the groove.

∙ Even when a foreign matter of a level normally assumed enters the groove, the door body is strong enough to stand up due to buoyancy, and it has not been confirmed that the standing is prevented by biting of the foreign matter into the groove. However, the land gate is required to operate reliably (the door body is erected) in an emergency without being operated on a daily basis. For this reason, measures for more reliable operation are always required.

Therefore, an object of the present invention is to provide a land gate that can make a door body stand more securely by making it difficult for foreign matter to be caught in the groove.

In order to solve the above-mentioned problem, the land gate according to the first invention comprises a door body that undulates by rotating around a undulation axis,
A floorboard arranged adjacent to the undulation axis side of the fallen door body;
A groove formed between an end surface of the door body and an end surface of the floor board,
Filled in the groove portion, and provided with a padding material fixed to the end surface of the door body and the end surface of the floor plate forming the groove portion,
The padding material has elasticity, and when the groove portion becomes narrow as the door body stands up, it rises higher than the lower one of the upper end of the end surface of the door body and the upper end of the end surface of the floor board. .

In addition, the land gate according to the second invention has fluidity when the filling material in the land gate according to the first invention is filled in the groove, and the end face and the floor board are changed over time. The exposed surface solidifies as it sticks to the end face.

Furthermore, a land anchor gate according to a third aspect of the present invention is the land anchor gate according to the first or second aspect of the present invention, in a state where the door body is lying down, The proportion is 65% or more and 85% or less,
In the state where the door body is lying down, the filling material does not come into contact with the tire passing over the groove.

In addition, the land gate according to the fourth aspect of the invention is the land gate according to the first or second aspect of the invention, wherein the groove is wider toward the top in a state where the door body is lying down.

Further, the land gate according to the fifth invention is the land gate according to the fourth invention, in the state where the door body is lying down, the angle between the end surface of the door body and the horizontal plane, and the end surface of the floor board. And the horizontal plane are both 40 ° or more and 60 ° or less,
With the door body lying down, the relationship between the distance δ between the end face of the door body and the end face of the floor plate at the bottom of the groove and the depth D of the groove is D × 0.1 ≦ δ ≦ D. X0.5.

According to the land gate, since the filling material filled in the groove rises from the lower end of the upper end of the end surface of the door body and the upper end of the end surface of the floor plate when the door body stands, foreign matter is not easily caught in the groove portion. As a result, the door body can be erected more reliably.

It is sectional drawing which looked at the right direction from the span center in the normal time of the land gate concerning the embodiment of the present invention. It is sectional drawing which looked at the right direction from the span center at the time of emergency of the same land anchor gate. FIG. 2 is a cross-sectional view taken along the line AA in FIG. It is a perspective view which shows the connection part of the fallen door body and floor board structure of the same land anchor gate in FIG. It is a perspective view which shows the connection part of the door body and floor board structure which stood up the same land anchor gate in FIG. It is an expanded sectional view which shows the padding material at the time of the fall of the door body, and its periphery. It is an expanded sectional view which shows the padding material at the time of standing up of the door body, and its periphery. It is an expanded sectional view showing the state where the tire has passed over the groove part when the door body is lying down. It is an expanded sectional view for demonstrating the function of the same filling material, and shows the time of the fall of a door body. It is an expanded sectional view for demonstrating the function of the same filling material, and shows the time of the door body standing. It is an expanded sectional view for demonstrating the function of the same filling material, and shows the time of the door body standing upright. It is an expanded sectional view which shows the groove part at the time of making the standing angle of the door body into 90 degrees, and its periphery. It is an expanded sectional view which shows the groove part and its periphery when the standing angle of the door body is 80 degrees, and the inclination angles of the door body side end face and the floor board side end face are both 55 degrees. It is an expanded sectional view which shows a groove part and its periphery when the standing angle of the door body is 80 °, and the inclination angles of the door body side end surface and the floor plate side end surface are 40 ° and 60 °, respectively. It is an expanded sectional view in case the door body side pressing board of the same land anchor gate is thicker than the floor board side pressing board, and shows the time when the door body is lying down. It is an expanded sectional view in case the door body side pressing board of the same land anchor gate is thicker than a floor board side pressing board, and shows the time of standing up of the door body. It is an expanded sectional view in case the door body side pressing plate of the same land anchor gate is thinner than the floor board side pressing plate, and shows when the door body is lying down. It is an expanded sectional view in case the door body side pressing board of the same land anchor gate is thinner than the floor board side pressing board, and shows the time when the door body stands.

Hereinafter, the land gate according to the embodiment of the present invention will be described with reference to the drawings.

This land anchor gate is installed on the road surface and blocks the water that is about to flow into the road surface due to storm surge or flood. As shown in FIG. 1, when the water surface S does not exceed the road surface R during normal times, the door body 2 included in the land gate 1 constitutes the road surface R while lying down. On the other hand, as shown in FIG. 2, in an emergency, that is, when the water surface S rises above the road surface R, the door body 2 provided in the land gate 1 is kept at the water level until its upper end is higher than the water surface S. The water is dammed by standing up following it. Although the road surface R from the land gate 1 to the water side (left side in FIG. 2) is submerged by this damming, the road surface R from the land gate 1 to the land side (right side in FIG. 2) is not submerged. FIGS. 1 and 2 are cross-sectional views of the land gate 1 as viewed from the center of the span. For this reason, the land gate 1 naturally has a left-side configuration not shown in FIGS. 1 and 2, and this left-side configuration is the same as the right-side configuration.

In general, the land gate where the door body rises and falls (rises and falls), there are open / close device types that use hydraulic, pneumatic or hoisting power to stand up, and the floating body type that uses the buoyancy of the door body itself There is also. Floating land-type gates have the advantage that when the water flows into them, that is, in an emergency, the door body is erected basically without power by buoyancy. The land gate 1 according to the present embodiment is not limited to a floating type, but will be described below as a floating type in order to simplify the description.

1 to 3, the land gate 1 is installed on a base B. The base B is arranged so that the upper surface (receiving surface) thereof is horizontal, and the lower side of the upper surface (receiving surface) is embedded in the foundation concrete C. In addition, the land gate 1 includes a door body 2, a floor board structure 3, and a side door contact 4 installed on the base B. In addition, as shown in FIG. 1, the facility for the water introduction including the grating G is provided in the foundation concrete C at the water side of the fallen door body 2. As shown in FIG.

The door body 2 is supported by a rotation support (not shown) so that the base end side becomes a center of rotation for raising and lowering (hereinafter referred to as a raising and lowering axis). The door body 2 includes a skin plate 21 that directly receives pressure (water pressure) from the damming water, a girder structure 25 that reinforces the skin plate 21, a cover plate 22 that becomes the road surface R in normal times, and the skin A buoyancy body 23 filled between the plate 21 and the cover plate 22 and a watertight structure 26 for preventing water leakage in an emergency.

The girder structure 25 has an upper horizontal girder 51 and a lower horizontal girder 52 shown in FIGS. 1 and 2, a left and right side vertical girder 54 shown in FIG. 3, and an intermediate vertical girder 53 as required. As shown in FIGS. 1 and 2, the upper horizontal girder 51 is configured to generate a buoyancy to the extent that the door body 2 is erected basically without power when submerged. The lower horizontal girder 52 has an end portion on the land side of the cover plate 22 and a part of the watertight structure 26 (specifically, a portion 62 that ensures watertightness between the door body 2 and the floorboard structure 3). Is fixed. As shown in FIG. 3, the left and right side stringers 54 have another part of the watertight structure 26 (specifically, a part 64 that ensures watertightness between the door body 2 and the side door contact 4). Is fixed. Further, a pin 29 protruding toward the side door stop 4 is fixed to the left and right side stringers 54.

The watertight structure 26 is a three-way watertight structure having a lower watertight rubber 62 shown in FIGS. 1 and 2 and a side watertight rubber 64 shown in FIG. As the watertight structure 26, the lower watertight rubber 62 shown in FIGS. 1 and 2 is fixed to the lower horizontal girder 52 and the floorboard structure 3 by the door body side pressing plate 28 and the floorboard side pressing plate 38, respectively. The side watertight rubber 64 is fixed to the side stringer 54 by the side pressing plate 24.

The side door contact 4 is arranged on the left and right sides of the door body 2 and continues to the waterproof wall W as shown in FIG. In the side door stoppers 4, the surface on the door body 2 side is a side door contact surface 41, and the inside is a space. The side door contact surface 41 ensures water tightness between the door body 2 and the side door contact 4 by pressing the side watertight rubber 64. Further, as shown in FIGS. 1 and 2, an arc groove 49 through which the pin 29 is passed is formed in the side door contact surface 41. These circular arc grooves 49 allow the pins 29 to pass through when the door body 2 is raised and lowered. As shown in FIG. 2, when the pin 29 is passed through the circular arc grooves 49 and the door body 2 is completely erected (hereinafter, referred to as the erection of the door body 2), the door body 2 and the horizontal plane Is an upright angle α of the door body 2.

Here, the connecting portion between the door body 2 and the floor board structure 3 will be described in detail with reference to FIGS.

As shown in FIG. 4, the lower horizontal girder 52 has a web 56 welded to the skin plate 21 and a flange 57 to which the cover plate 22 and the lower watertight rubber 62 are fixed. The flange 57 is fixed by a bolt 2B with the lower watertight rubber 62 sandwiched between the door body side pressing plates 28. In addition, since the door body side pressing plate 28 is a constituent member of the door body 2, the end surface of the door body side pressing plate 28 is also the end surface of the door body 2.

The floor plate structure 3 includes a lower plate 35 fixed to the base B, an upper plate 37 to which the lower watertight rubber 62 is fixed, and a rising plate 36 that connects the lower plate 35 and the upper plate 37. . In the space formed by the upper plate 37, the lower plate 35, and the rising plate 36, foundation concrete C is placed. The upper plate 37 is fixed with bolts 3B by sandwiching the lower watertight rubber 62 with the floor plate side pressing plate 38. The foundation concrete C is also placed on the land side of the upper plate 37, the lower watertight rubber 62 and the floor plate side pressing plate 38. In addition, since the said floor board side pressing board 38 comprises the road surface R irrespective of the raising / lowering of the door body 2, it can be said that it is a floor board. For this reason, the end surface of the said floor board side pressing board 38 is also an end surface of a floor board.

Between the land-side end surface 72 of the door-body-side presser plate 28 and the water-side end surface 73 of the floor-plate-side presser plate 38, a groove portion 7 is formed across the span direction (left-right direction) of the door body 2. The groove portion 7 includes a land-side end surface 72 (hereinafter referred to as a door-body side end surface 72) of the door-body-side pressing plate 28 and a water-side end surface 73 (hereinafter referred to as a floor-plate-side end surface 73) of the floor-plate-side pressing plate 38. The fixed intercalating material 8 having elasticity is filled. As shown in FIG. 5, the groove portion 7 becomes narrow as the door body 2 stands. Here, since the padding material 8 has elasticity, it rises upward, which is a space to escape, by the amount of the narrowed groove portion 7. The amount and position of filling the groove portion 7 are determined so that the gap 8 is higher than the lower one of the upper end of the door-body-side end surface 72 and the upper end of the floor-plate-side end surface 73.

Hereinafter, the above-described filling material 8 and its surroundings, which are the gist of the present invention, will be described in detail with reference to FIGS.

As shown in FIG. 6, when the door body 2 is lying down, for example, the door body side pressing plate 28 and the floor board side pressing plate 38 have substantially the same position on the upper surface and the lower surface. That is, the door body side pressing plate 28 and the floor plate side pressing plate 38 have substantially the same thickness T1, T2 and height. For this reason, the depth D of the groove part 7 corresponds to the thicknesses T1 and T2 of the door body side pressing plate 28 and the floor plate side pressing plate 38. When the door body 2 is lying down, the door body side end face 72 is inclined so as to approach the water side as it goes upward, and the floor board side end face 73 is inclined so as to approach the land side as it goes upward. That is, when the door body 2 is lying down, the door body side end surface 72 and the floor board side end surface 73 are inclined so as to be separated from each other upward, in other words, the groove portion 7 is wider toward the upper side. For this reason, when the door body 2 is lying down, the door body side end surface 72 and the floor board side end surface 73 have a minimum interval δ at their lower ends and a maximum interval W at their upper ends. The inclination angles θ1 and θ2 of the door body side end surface 72 and the floor plate side end surface 73 are such that the door body side end surface 72 and the floor plate side end surface 73 which are close to each other do not interfere with each other when the door body 2 stands (see FIG. 7). It is designed so that the tire T of the vehicle passing over the groove portion 7 does not come into contact with the filling material 8 when the door body 2 is lying down (see FIG. 8) without damaging the material 8. The groove portion 7 is narrowed as the door body 2 stands up. As an example, the groove portion 7 is disposed above the undulation axis 20 as shown in FIGS. In addition, it is preferable that the undulation axis 20 is located inside the lower watertight rubber 62 because the lower watertight rubber 62 is not excessively expanded or contracted even when the door body 2 is undulated. The height h (see FIG. 6) of the padding material 8 when the door body 2 is lying down is such that the upper end a of the padding material 8 when the door body 2 stands is the upper end of the door body side end surface 72 and the floor plate side end surface 73. It is designed to be higher than the lower one b of the upper ends (see FIG. 7). Further, as shown in FIGS. 6 to 8, the padding material 8 contacts the lower watertight rubber 62 at the bottom of the groove portion 7 in order to secure water stoppage with the assistance of the lower watertight rubber 62. Or it is preferable that it adheres.

The filling material 8 has fluidity when it is filled in the groove portion 7, and adheres to the door body side end surface 72 and the floor plate side end surface 73 as time passes, and the exposed surface solidifies. Here, having fluidity means being liquid or gelled. The filling material 8 has fluidity when being filled in the groove portion 7, thereby facilitating the filling operation. Moreover, the said filling material 8 adheres to the door body side end surface 72 and the floor-plate side end surface 73 with a time-dependent change, The shape of the filling material 8 is made with a iron etc. after the said filling and before the said fixation. As a result, the filling operation is facilitated. Furthermore, since the exposed surface of the filling material 8 is solidified by aging, even if heavy foreign matter enters the groove portion 7, the foreign matter does not sink into the surface.

For example, a material specified in JIS (Japanese Industrial Standards) A5758 is used for the interlining material 8. In particular, the filling material 8 includes “silicone sealant 8060 pro (trade name)” manufactured by Cemedine Co., Ltd., and “silicone” manufactured by Sekisui Fuller Co., Ltd., which are silicone sealants generally used as a sealing material for buildings. "JX (trade name)" and "Sealant 45 (trade name)" manufactured by Shin-Etsu Chemical Co., Ltd. are most suitable. The filling material 8 may be a polyisobutylene-based material in addition to a silicone-based material such as a silicone sealant. Modified silicone-based, polysulfide-based, acrylic urethane-based, polyurethane-based, or acrylic-based may be used, and the filling material 8 can easily follow the shape change of the groove portion 7 due to the undulation of the door body 2 (high elastic limit is low). Those having excellent properties such as elastic modulus), fixing properties and water-stopping properties, and durability and weather resistance are preferred.

Hereinafter, the function of the filling material 8 accompanying the standing of the door body 2 will be described with reference to FIGS.

As shown in FIG. 9, it is assumed that the foreign object X enters the groove portion 7 when the door body 2 is lying down. The foreign matter X is stationary on the filling material 8 filled in the groove portion 7. Next, as shown in FIG. 10, when the door body 2 is erected, the padding material 8 is fixed to the door body side end surface 72 and the floor plate side end surface 73 and has elasticity, so that the groove portion 7 becomes narrow. Therefore, the interstitial material 8 rises above the groove 7. At this time, since the surface of the filling material 8 is already solidified, it does not sink into the surface of the filling material 8 even if the foreign matter X is heavy. As shown in FIG. 11, when the door body 2 stands up, the upper end a of the padding material 8 rises from the lower end b of the upper end of the door body side end surface 72 and the upper end of the floor plate side end surface 73. Foreign matter X is not bitten. Depending on the size of the foreign material X, the foreign material X is discharged from the groove portion 7 to the upper surface of the floor plate-side pressing plate 38 by the raised filling material 8. In addition, since the padding material 8 is fixed to the door body side end surface 72 and the floor plate side end surface 73, it is not peeled off from the groove portion 7 by the standing of the door body 2.

In this way, according to the land gate 1, the filling material 8 filled in the groove portion 7 rises from the lower end b of the upper end of the door body side end surface 72 and the upper end of the floor board side end surface 73 when the door body 2 stands up. As a result, the door body 2 can be raised more reliably.

Further, the filling material 8 has fluidity when being filled in the groove portion 7 and adheres to the door body side end surface 72 and the floor plate side end surface 73 due to changes over time, so that the filling operation is facilitated. As a result, the manufacturing period of the land gate 1 can be shortened. Furthermore, since the exposed surface of the filling material 8 is solidified due to a change with time, the foreign matter X does not sink into the surface, so that the foreign matter X is less likely to be caught in the groove portion 7, and as a result, more reliably. The door body 2 can be erected.

In addition, in the state where the door body 2 is lying down, the groove portion 7 is wider toward the top, so that the door body side end surface 72 and the floor plate side end surface 73 can be designed to be close to each other. For this reason, the foreign matter X is less likely to be caught in the groove portion 7, and as a result, the door body 2 can be erected more reliably.

Hereinafter, since Experiments (1) to (4) were performed on Examples 1 to 3 which are more specific than the above-described embodiment, these will be described in detail below. Note that the configurations of Examples 1 to 3 that are not described below are the same as those in the above embodiment. Here, in the first to third embodiments, as a common point, the filling material 8 is made of a silicone sealant, the inclination angles θ1 and θ2 of the door body side end surface 72 and the floor plate side end surface 73 are both 45 °, and the door body side The thicknesses T1 and T2 (hereinafter abbreviated as plate thicknesses T1 and T2) of the presser plate 28 and the floor plate side presser plate 38 are both 8 mm, the minimum distance δ between the door body side end surface 72 and the floor plate side end surface 73 is 6 mm, The standing angle α of the door body 2 was set to 70 °. Further, in Examples 1 to 3, the height h of the filling material 8 is different as a difference. Specifically, the height h of the filling material 8 is 4 mm in Example 1 (50% with respect to the depth D of the groove portion 7), and 6 mm in Example 2 (75 with respect to the depth D of the groove portion 7). %) And 8 mm in Example 3 (100% with respect to the depth D of the groove portion 7). The specific contents of the experiments (1) to (4) are as follows.
Experiment (1): Whether or not the bicycle T is passed over the groove 7 and the tire T of the bicycle comes into contact with the padding material 8.
Experiment (2): Whether the padding material 8 is peeled off from the door body side end face 72 or the floor board side end face 73 due to the undulation of the door body 2.
Experiment (3): Whether or not water leaks from the filling material 8 by applying three times of water pressure to the door body 2 when the door body 2 stands.
Experiment (4): Is the foreign matter X arranged on the padding material 8 when the door body 2 is lying down bitten into the groove portion 7 when the door body 2 stands up? The foreign matter X was gravel with an outer diameter of 2 mm, gravel with an outer diameter of 4 mm, and metal round bars (four each of φ3 × 100 mm and φ6 × 100 mm).

As a result of the experiment (1), the bicycle tire T sinked into the groove portion 7 from the upper surfaces of the door body side pressing plate 28 and the floor plate side pressing plate 38 by about 1.5 mm, but did not come into contact with the padding material 8. As a result of the experiment (2), the padding material 8 was not peeled off from the door body side end face 72 and the floor board side end face 73 in about 10 undulations. As a result of the experiment (3), there was no leakage of water from the filling material 8, and the water stop state was good. As a result of the experiment (4), the metal rod of φ3 × 100 mm and φ6 × 100 mm was bitten into the groove portion 7 by the standing of the door body 2, but gravel with an outer diameter of 2 mm and 4 mm was not bitten. In addition, the standing of the door body 2 was not prevented by the biting of the metal round bar into the groove portion 7. Therefore, the door body 2 can be raised more reliably.

As a result of the experiment (1), the bicycle tire T sinked into the groove portion 7 from the upper surfaces of the door body side pressing plate 28 and the floor plate side pressing plate 38 by about 1.5 mm, but did not come into contact with the padding material 8. As a result of the experiment (2), the padding material 8 was not peeled off from the door body side end face 72 and the floor board side end face 73 in about 10 undulations. As a result of the experiment (3), there was no leakage of water from the filling material 8, and the water stop state was good. As a result of the experiment (4), no foreign matter X was caught in the groove portion 7 by the standing of the door body 2. Therefore, the door body 2 can be raised more reliably.

As a result of the experiment (1), the bicycle tire T came into contact with the padding material 8 trying to sink into the groove portion 7 from the upper surfaces of the door body side pressing plate 28 and the floor plate side pressing plate 38. As a result of the experiment (2), the padding material 8 was not peeled off from the door body side end face 72 and the floor board side end face 73 in about 10 undulations. As a result of the experiment (3), there was no leakage of water from the filling material 8, and the water stop state was good. As a result of the experiment (4), no foreign matter X was caught in the groove portion 7 by the standing of the door body 2. Therefore, the door body 2 can be raised more reliably.

The table summarizing the results of the experiments (1) to (4) for Examples 1 to 3 is as follows.

As described above, in each of the first to third embodiments, with respect to the filling material 8, it is possible to ensure durability in undulations of about 10 times and water stoppage with the assistance of the lower watertight rubber 62. It has been shown. Moreover, in the said Example 1, the door body 2 was stood up more reliably, and in Examples 2 and 3, it was shown that the door body 2 is stood still more reliably. Furthermore, in Examples 1 and 2, it was shown that non-contactability with the tire T was ensured.

Moreover, in the said Example 2, although the case where the ratio of the height h of the padding material 8 with respect to the depth D of the groove part 7 was 75% was shown, even if the said ratio is 65% or more and 85% or less The same effects as those of the second embodiment are obtained.

Next, the ratio of the height h of the filling material 8 to the depth D of the groove portion 7 is not changed from the first embodiment in which the metal rods of φ3 and φ6 are bitten into the groove portion 7, and other than that The above experiments (1) to (4) were performed on Example 4 and Example 5 in which the parameters were changed, and these will be described in detail below. Note that the configurations not described below in the fourth and fifth embodiments are the same as those in the above-described embodiment. Here, in the first embodiment, the fourth embodiment, and the fifth embodiment, as a common point, the filling material 8 is a silicone sealant, and the inclination angles θ1 and θ2 of the door body side end surface 72 and the floor plate side end surface 73 are both 45 °. The standing angle α of the door body 2 was set to 70 °, and the height h of the filling material 8 with respect to the depth D of the groove portion 7 was set to 50%. Moreover, in the said Example 1, Example 4, and Example 5, board thickness T1, T2 and the minimum space | interval (delta) differed as a difference point. Specifically, in the first embodiment, the plate thicknesses T1 and T2 are 8 mm and the minimum interval δ is 6 mm, whereas in the fourth embodiment, the plate thicknesses T1 and T2 are 8 mm and the minimum interval δ is 2 mm. In Example 5, the plate thicknesses T1 and T2 were 4 mm, and the minimum interval δ was 2 mm.

As a result of the experiment (1), the bicycle tire T was sunk into the groove portion 7 by about 1.0 mm from the upper surfaces of the door body side pressing plate 28 and the floor plate side pressing plate 38, but did not contact the padding material 8. As a result of the experiment (2), the padding material 8 was not peeled off from the door body side end face 72 and the floor board side end face 73 in about 10 undulations. As a result of the experiment (3), there was no leakage of water from the filling material 8, and the water stop state was good. As a result of the experiment (4), no foreign matter X was caught in the groove portion 7 by the standing of the door body 2. Therefore, the door body 2 can be raised more reliably.

The table summarizing the results of the experiments (1) to (4) for Example 1, Example 4 and Example 5 is as follows.

Thus, in Example 1, Example 4 and Example 5, all of the interlining material 8 are non-contact with the tire T, durability in undulations about 10 times, and the lower watertight rubber 62. It was shown that the water-stopping property was secured with the assistance. Further, from the comparison of Example 1, Example 4 and Example 5, even if the ratio of the height h of the filling material 8 to the depth D of the groove 7 is the same, if the minimum interval δ is small (that is, the groove 7 It was shown that the foreign material X can be effectively prevented from biting into the groove portion 7 if it is narrow).

In the first to fifth embodiments, the inclination angles θ1 and θ2 are 45 °, the minimum interval δ is 2 mm or 6 mm, and the depth D of the groove 7 is 4 mm or 8 mm. Even if θ1 and θ2 are not less than 40 ° and not more than 60 °, and the depth D × 0.1 ≦ minimum interval δ ≦ depth D × 0.5 of the groove portion 7 is 1 to The same effects as those of the fifth embodiment are obtained.

In the embodiment and Examples 1 to 5, the inclination angles θ1 and θ2 are both 45 ° and the rising angle α of the door body 2 is 70 °. However, the present invention is not limited thereto. There is no. The inclination angles θ1 and θ2 and the rising angle α of the door body 2 are such that the door body side end face 72 and the floor board side end face 73 which are close to each other do not interfere with each other and the padding material 8 is not damaged when the door body 2 stands. I just need it. As examples of such inclination angles θ1, θ2 and standing angle α, as shown in FIG. 12, the inclination angles θ1, θ2 of the door body side end surface 72 and the floor plate side end surface 73 are both 45 °, The standing angle α may be 90 °, and as shown in FIG. 13, the inclination angles θ1 and θ2 of the door body side end surface 72 and the floor board side end surface 73 may both be 55 °, and the standing angle α of the door body 2 may be 80 °. As shown in FIG. 14, the inclination angle θ1 of the door body side end surface 72 may be 40 °, the inclination angle θ2 of the floor plate side end surface 73 may be 60 °, and the standing angle α of the door body 2 may be 80 °. In FIGS. 12 to 14 (illustration of the filling material 8 is omitted), the groove 7 does not become wide when the door body 2 shown by the phantom line is raised, but it is close to each other by providing a minimum interval δ. The door body side end surface 72 and the floor board side end surface 73 do not interfere with each other, and the padding material 8 is not damaged.

Moreover, if the groove part 7 becomes narrow when the door body 2 stands, the positional relationship with the undulation axis 20 is not limited. For example, as shown in FIG. 12, there may be a undulation axis 20 at the bottom of the groove 7, and there may be a undulation axis 20 at the bottom of the groove 7 as shown in FIGS. 13 and 14.

Further, in the embodiment and Examples 1 to 5, the door body side pressing plate 28 and the floor plate side pressing plate 38 have been described as having substantially the same thickness T1, T2 and height. It is not limited to this. For example, FIGS. 15 to 18 show cases where the thicknesses T1 and T2 of the door body side pressing plate 28 and the floor plate side pressing plate 38 are different. FIGS. 15 and 16 show the door body side pressing plate 28 and the floor plate side pressing plate 38. 17 and 18 show the case where the door body side pressing plate 28 is thinner than the floor plate side pressing plate 38 (T1 <T2). In any case, as shown in FIGS. 16 and 18, the upper end a of the padding material 8 is lower than the lower end b of the upper end of the door body side end surface 72 and the upper end of the floor plate side end surface 73 when the door body 2 stands. If the height rises, the foreign object X is not easily caught in the groove portion 7, and as a result, the door body 2 can be erected more reliably. Of course, if the upper end a of the padding material 8 rises higher than the upper end of the door body side end surface 72 and the upper end of the floor plate side end surface 73 when the door body 2 stands up, the foreign matter X is less likely to be caught in the groove portion 7. As a result, the door body 2 can be raised more reliably.

The above embodiment and Examples 1 to 5 are illustrative in all points and are not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims. Of the configurations described in the above embodiment and Examples 1 to 5, the configurations other than the configuration described as the first invention in “Means for Solving the Problems” are arbitrary configurations, and are appropriately It can be deleted and changed.

Claims

A door body that undulates by rotating around the undulation axis,
A floorboard arranged adjacent to the undulation axis side of the fallen door body;
A groove formed between an end surface of the door body and an end surface of the floor board,
Filled in the groove portion, and provided with a padding material fixed to the end surface of the door body and the end surface of the floor plate forming the groove portion,
The padding material has elasticity, and when the groove portion becomes narrow as the door body stands up, it rises higher than the lower one of the upper end of the end surface of the door body and the upper end of the end surface of the floor board. A land gate characterized by that.
The interstitial material has fluidity when being filled in the groove, and is fixed to the end face and the end face of the floor board as time passes, and the exposed surface is solidified. The land gate according to 1.
With the door body lying down, the ratio of the height of the filling material to the depth of the groove is 65% or more and 85% or less,
3. The land gate according to claim 1, wherein the padding material does not contact a tire passing over the groove when the door body is lying down.
The land gate according to claim 1 or 2, wherein the groove portion is wider toward the upper side in a state where the door body is lying down.
With the door body lying down, the angle between the end face of the door body and the horizontal plane, and the angle between the end face of the floor plate and the horizontal plane are both 40 ° or more and 60 ° or less,
With the door body lying down, the relationship between the distance δ between the end face of the door body and the end face of the floor plate at the bottom of the groove and the depth D of the groove is D × 0.1 ≦ δ ≦ D. The land gate according to claim 4, which is × 0.5.