JP5759310B2 - Pressure plate - Google Patents

Description

  The present invention relates to a pressure receiving plate, and more particularly, to a pressure receiving plate having high fixability even if the slope is not flat.

  Conventionally, when reinforcing a slope, an anchor bolt is driven deeply into the slope, and a pressure receiving plate is applied to fasten and fix with a nut.

However, the conventional technique has the following problems.
It is preferable to make the slope as flat as possible by pre-construction, but when rocks intervene, or when the slope itself has a curvature with respect to the traveling direction as seen on the left and right slopes of a curved road There is.

  Here, a general pressure receiving plate is a cross shape or a square shape, and since the ground contact surface is on the same plane, there is a portion where floating occurs, and thus it is not necessarily fixed over the entire surface, that is, it is inferior in fixability. There was a problem that there was a case.

  In addition, immediately after the construction, even when the slope is firmly pressed, there is a problem that the fixing becomes weak due to the influence of rain and the growth of vegetation.

JP 2003-313877 A JP 2002-227211 JP 2004-150200 A JP 2004-27600 A JP 2001-329542 A

  This invention is made | formed in view of the above, Comprising: It aims at providing the pressure receiving plate which can follow the undulation and curvature of a construction surface, and can perform stable slope reinforcement over a long period of time.

  The pressure receiving plate according to claim 1 has a hole portion into which an anchor bolt is inserted in the center, a base portion that descends to the ground side by tightening a nut, and a base portion ground side that is a predetermined distance from the hole portion. A plurality of pressing bodies that are arranged at distant positions and apply pressure toward the ground side, and a plurality of arm bodies that extend in the radial direction around the hole, each having a radial proximal end side in the hole drilling direction It is pivotally supported in a vertical direction, and the tip end side of the diameter can be turned up and down, and the lower end of the pressing body abuts or is joined in the middle and attached to the tip end side of each arm body to press the ground. And a plate body.

  In other words, the invention according to claim 1 enables stable slope reinforcement over a long period of time because each independent arm body follows the undulation and curvature of the construction surface.

  The direction perpendicular to the hole drilling direction is a position that is horizontal (horizontal with respect to the ground) because the hole drilling direction is the vertical direction when the pressure receiving plate is installed on the ground without inclination. Meaning relationship. Similarly, being able to rotate up and down means moving up and down (actually up and down drawing an arc) with respect to the ground. Further, the bearing on the base end side of the arm body can be appropriately extended from the base portion or integrated with the base portion.

  Moreover, the aspect provided with two or more in the rotationally symmetrical position centering on a hole part may be sufficient as a press body and an arm body. Thereby, the pressure receiving plate which presses a slope uniformly can be provided. The rotational symmetry can be, for example, 120 ° rotational symmetry (three arm bodies) or 90 ° rotational symmetry (four arm bodies).

  In addition, the plate body is not necessarily a plate as long as it has a predetermined contact area and can hold down the ground surface, and may have a hole such as a mesh shape. In this sense, the plate body can also be expressed as a plate-like body. The plate body may be detachable from the arm body, and the shape and area may be varied depending on the state of the ground plane. As a result, reinforcement with a high degree of freedom in design according to the slope becomes possible.

  The pressure receiving plate according to claim 2 has a hole portion into which an anchor bolt is inserted in the center, a base portion that descends to the ground side by tightening a nut, a base portion on the ground side, and the hole portion and the center. A cylindrical pressing body that applies pressure toward the ground side and a plurality of arm bodies that extend in the radial direction centered on the hole, and each of the radial base ends is perpendicular to the hole drilling direction. The end of the diameter is pivoted up and down, and the lower end of the cylindrical presser is in contact with or joined to the middle, and the plate attached to the end of the end of each end of the arm and pressing the ground And a body.

  In other words, the invention according to claim 2 enables stable slope reinforcement over a long period of time by following the undulations of the construction surface by the independent arm body. The cylindrical pressing body can be, for example, a single large coil spring. In addition, a plurality of coil springs are arranged on the same circumference, and each coil spring is coupled to this with a lower surface as a perforated disk. Thus, the arm body can be pushed down evenly.

  A pressure receiving plate according to claim 3 is characterized in that, in the pressure receiving plate according to claim 1 or 2, a coil spring is used as a pressing body.

  That is, the invention according to claim 3 can press the slope with a simple configuration.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the pressure receiving plate which can follow the undulation and curvature of a construction surface, and can perform stable slope reinforcement over a long period of time. Specifically, each of the independent arm bodies is made to follow the undulation and curvature of the construction surface, and stable slope reinforcement can be achieved over a long period of time (claim 1). In addition, the independent arm body can provide stable slope reinforcement over a long period of time following the undulations of the construction surface (claim 2). Further, the slope can be pressed with a simple configuration (claim 3).

2 is a schematic plan view showing a pressure receiving plate according to Embodiment 1. FIG. It is the schematic cross section which looked at the pressure receiving plate shown in FIG. 1 from the side surface. FIG. 6 is a schematic plan view showing a pressure receiving plate of a second embodiment. It is the schematic cross section which looked at the pressure receiving plate shown in FIG. 3 from the side surface.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
<Embodiment 1>
FIG. 1 is a schematic plan view showing an example of a pressure receiving plate of the present invention. FIG. 2 is a schematic cross-sectional view of the pressure receiving plate shown in FIG. In FIGS. 1 and 2, the pressure receiving plate will be described as being in a vertically downward state, that is, assuming that the ground is a horizontal plane.

  The pressure receiving plate 100 has a basic configuration including a central base 101, four arms 102, four cylinder-shaped springs 103, and four ground plates 104.

  The base portion 101 includes a fixing hole 111 through which the anchor bolt B is inserted, a nut receiver 112 that is a concave portion above the fixing hole 111, and an arm receiver 113 provided on the lower surface. The spring 103 is attached to the lower surface on the peripheral side of the base portion 101 with respect to the arm receiver 113 with its axis oriented substantially vertically.

  The arm receiver 113 pivotally supports the other end of the arm 102 so that the other end can be pivoted up and down, and the pivot shaft 114 is orthogonal to the axis of the fixing hole 111, that is, in the horizontal direction and the fixing hole 111. It is set as the state arranged at right angles with respect to radial direction seeing from the axis of. In addition, after the arm 102 is attached to the base portion 101 (after being inserted into the rotating shaft 114), an attachment 115 for preventing removal is fitted.

  The arm 102 is provided with a hole 121 to be inserted into the rotation shaft 114 on the base end side (fixed hole 111 side), and a joint 122 is formed on the distal end side so that the ground plate 104 can freely swing within a predetermined range. It is detachably coupled while being able to. Thereby, even if the ground plate 104 has an unevenness | corrugation or curvature in the ground, it is crimped | bonded to the ground most firmly. Further, by making it detachable, a desired ground covering is possible.

  Further, the arm 102 is provided with a mounting portion 123 for attaching the lower end of the spring 103 in the middle. Thus, when the base portion 101 is lowered by tightening the nut N, the four arms 102 independently press the ground plate 104 against the ground.

  The spring 103 encloses a coil spring 133 with a hollow cylindrical upper cylinder 131 and a lower cylinder 132, and transmits an elastic force in the axial direction.

  The ground plate 104 is composed of a net-like high-rigidity metal flat plate 142 with an arm joint 141 projecting from the center. By being net-like, the grass grows, and it is possible to prevent sediment runoff due to rain and eventually the tightening force to be attenuated.

  As the pressure receiving plate 100, a material obtained by subjecting stainless steel to hot dip galvanization can be used. Moreover, it can also be made from FRP depending on the mode of use. Although the size is not particularly limited, the distance between the tips of the opposing arms 102 can be about 1000 mm.

  Since the pressure receiving plate 100 is configured as described above, the individual ground plates 104 independently press the ground by elastic force, and the individual ground plates 104 maximize the pressing force to the ground surface by swinging. Hold down the ground. In addition, since floating is not caused by the elastic force, stable slope reinforcement can be performed over a long period of time following the undulation and curvature of the construction surface.

  The configuration of the pressure receiving plate 100 is not limited to the above. The spring 103 may be left uncovered without being covered with a cylinder. In addition, the pressure receiving plate 100 may be changed in shape and size depending on the state of the ground contact surface, or may be in a form in which adjacent pressure receiving plates 100 overlap. Moreover, you may use a punching metal instead of a mesh. Further, although the four-leg pressure receiving plate has been described with reference to FIG. 1, for example, three arms may be 120 degrees rotationally symmetric. In addition, it is good also as 180 degree rotation symmetry so that an arm front-end | tip may be located in a rectangular corner in planar view.

<Embodiment 2>
In the first embodiment, the pressure receiving plate having four springs 103 has been described. In the second embodiment, a pressure receiving plate having one spring is described. In addition, about the same structure, the description is abbreviate | omitted as what attaches | subjects the same code | symbol. FIG. 3 is a schematic plan view of the pressure receiving plate of the second embodiment. 4 is a schematic cross-sectional view of the pressure receiving plate shown in FIG. 3 as viewed from the side. 3 and 4, the pressure receiving plate will be described as being in a vertically downward state, that is, assuming that the ground is a horizontal plane.

  The pressure receiving plate 200 has a basic structure including a central base 101, four arms 102, one large cylinder-shaped spring 203, and four ground plates 204.

  The large spring 203 is formed by enclosing a large coil spring 233 between a cylindrical upper cylinder 231 and a lower cylinder 232. The cylindrical shaft and the fixing hole shaft are the same, and the large spring 203 is formed on the lower surface of the pressure receiving plate 100. It is attached. The lower surface of the large spring 203 is coupled at four locations by the attachment portions 123 of the four arms 102.

  Since the pressure receiving plate 200 has the above-described configuration, each ground plate 104 presses the ground independently by elastic force, and each ground plate 104 maximizes the pressing force to the ground surface by swinging. Hold down the ground. In addition, since floating is not caused by the elastic force, stable slope reinforcement can be performed over a long period of time following the undulation and curvature of the construction surface. Since the pressure receiving plate 200 has a common spring, the fixing force may be weaker than that of the pressure receiving plate 100 when the nut N is set to the same tightening torque, but the configuration is simpler than the pressure receiving plate 100. You may make it use properly according to the design strength of slope reinforcement suitably. Further, the tightening torque may be increased.

  Needless to say, the pressure receiving plate 200 can employ various configurations in the same manner as the pressure receiving plate 100.

  ADVANTAGE OF THE INVENTION According to this invention, it becomes possible to provide the pressure receiving plate which can follow the undulation and curvature of a construction surface, and can perform stable slope reinforcement over a long period of time.

100, 200 Pressure receiving plate 101 Base portion 102 Arm 103, 203 Spring 104, 204 Ground plate 111 Fixing hole 112 Nut receiving 113 Arm receiving 114 Rotating shaft 115 Attachment 121 Hole 122 Joint 123 Mounting portion 131, 231 Upper cylinder 132, 232 Lower cylinder 133, 233 Coil spring 141 Arm joint 142 Metal flat plate 203 Large spring B Anchor bolt N Nut

Claims (3)

A base part having a hole part for inserting an anchor bolt in the center and descending to the ground side by tightening a nut;
A plurality of pressing bodies that are arranged on the ground side of the base part at positions spaced apart from the hole and apply pressure toward the ground side;
A plurality of arm bodies extending in the radial direction centered on the hole, each having a radial proximal end pivotally supported in a direction perpendicular to the hole drilling direction, the radial distal end being rotatable up and down, An arm body in which the lower end of the pressing body abuts or is coupled,
A plate that is attached to the front end of each arm body and presses the ground,
A pressure receiving plate characterized by comprising: A base part having a hole part for inserting an anchor bolt in the center and descending to the ground side by tightening a nut;
A cylindrical pressing body that applies pressure toward the ground side on the ground side of the base unit, the center of which coincides with the hole,
A plurality of arm bodies extending in the radial direction centered on the hole, each having a radial proximal end pivotally supported in a direction perpendicular to the hole drilling direction, the radial distal end being rotatable up and down, An arm body in which the lower end of the cylindrical pressing body abuts or is coupled,
A plate that is attached to the front end of each arm body and presses the ground,
A pressure receiving plate characterized by comprising:   The pressure receiving plate according to claim 1, wherein a coil spring is used as the pressing body.

Images