JP6446515B1 - Underground anchor - Google Patents

Abstract

Provided is an underground anchor having high wing strength, low driving resistance into the ground, and hardly damaged or deformed at its tip.
An underground anchor (1) is made of metal and includes a central tube portion (2), a pair of wing portions (3), a bearing portion (4), and a vertical wing portion (5). The central tube portion 2 opens to the proximal end side, and the connecting tube portion 2c that receives the driving rod is opened, and gradually contracts and extends toward the distal end that is sharply closed. The wing part 3 includes a horizontal plane part 3c, a bent plane part 3d, and a flap part 3e. The bearing portion 4 rises upward from the upper side surface of the central tube portion 2. The vertical wing portion 5 has a substantially triangular plate shape having an inclined surface 5a. The center tube portion 2 has, on the base end side, an inclined end surface 2e that descends downward toward the rear, and a connecting tube portion 2c having a bottom portion 2d that receives a driving rod for driving into the ground.
[Selection] Figure 1

Description

  The present invention is driven into the ground such as the bottom of a lake in a vertically long shape, and when it reaches an appropriate depth, it is pulled by a pulling member such as a chain and rotated to a horizontal lateral position to escape into the ground. The present invention relates to an anchor that anchors a facility or the like installed on a water surface via a traction member, with respect to a flat plate or wing type underground anchor to be stopped.

  Conventionally, a flat plate type or an airfoil type has been known as an underground anchor, for example, described in Patent Document 1. This underground anchor has a receiving pipe into which a driving rod is fitted, a wing extending radially from this bearing pipe, a sharp leading end for underground propulsion protruding forward from this wing, and a bulge extending in the longitudinal direction, Ribs or ridges to which shackles can be connected for rotation in the ground, sharp pointed ends at the rear of the wing and lip-shaped bent extensions at the rear end of the bearing tube to facilitate anchor rotation And have.

Japanese Patent Publication No. 7-57949

The above-mentioned conventional underground anchor has a flat wing, is easily deformed by a load due to rotational resistance in the ground, has a sharp tip, has a large resistance when driven into the ground, and is damaged by use. There is a problem that it is easily deformed.
Accordingly, an object of the present invention is to provide an underground anchor having high wing strength, low driving resistance into the ground, and a tip portion that is difficult to be damaged or deformed.

Hereinafter, the present invention will be described with reference to the accompanying drawings, but the present invention is not limited thereto.
An underground anchor 1 according to the present invention for solving the above-described problems is composed entirely of metal, and includes a central tube portion 2, a pair of wing portions 3, a bearing portion 4, and a vertical wing portion 5. . The center tube portion 2 is open at the rear base end, extends straight so that the diameter gradually contracts toward the front tip, and is closed with a sharp tip. The pair of wing parts 3 extend radially from both lateral side surfaces of the central cylinder part 2 facing each other in the radial direction. The bearing portion 4 rises radially upward from the upper side surface of the central cylindrical portion 2 that is 90 ° away from the wing portion 3. The vertical wing portion 5 has a substantially triangular plate shape having a slope 5 a that is continuous with the upper end of the bearing portion 4 and slopes downward toward the top surface of the front end portion of the central tube portion 2. The center tube portion 2 has, on the base end side, an inclined end surface 2e that descends downward toward the rear, and a connecting tube portion 2c having a bottom portion 2d that receives a driving rod for driving into the ground. The outer edge of the wing part 3 has a parallel side edge part 3a extending parallel to the axis of the central cylinder part 2, and a slope extending linearly so as to converge toward the front continuously from the front end of the parallel side edge 3a. Side edge 3b. The bearing portion 4 is configured to be able to support a retaining pin 13 in the direction orthogonal to the axis of the central cylindrical portion 2 for connecting one end of the traction member 12 in a freely rotatable manner. The wing part 3 includes a horizontal plane part 3c extending in the radial direction of the central cylinder part 2, a bent plane part 3d, and a flap part 3e. The bending plane part 3d is bent upward and extends along a crease 3f along the axis of the central cylinder part 2 at a predetermined distance from the central cylinder part 2 in the horizontal plane part 3c. The flap portion 3e is continuous with the rear end of the horizontal plane portion 3c, and bends and extends in parallel with the inclined end surface 2e of the center tube portion 2 along the fold 3g in the direction perpendicular to the axis of the center tube portion 2.

  The underground anchor 1 according to the present invention has a shape in which the wing portion 3 is refracted at the fold 3f, so that the wing portion is not easily deformed by a load caused by a rotational resistance in the ground, and the proximal end side is opened. Since it has the central cylindrical portion 2 that extends straight so that the diameter contracts toward the tip, and the tip is pointed and closed, the resistance at the time of driving into the ground is small, and the tip is not easily damaged or deformed. It has the effect.

It is a perspective view of the underground anchor which concerns on this invention. It is a front view of the underground anchor of FIG. It is a top view of the underground anchor of FIG. It is IV-IV sectional drawing in FIG. It is VV sectional drawing in FIG. It is use explanatory drawing of the underground anchor of FIG.

Embodiments of the present invention will be described with reference to the drawings.
The underground anchor 1 is entirely made of a metal such as stainless steel, and includes a center tube portion 2, a pair of wing portions 3, a bearing portion 4, and a vertical wing portion 5.

  The center tube portion 2 is open at the rear base end, extends straight so that the diameter gradually contracts toward the front tip, and is closed with a sharp tip. The center tube portion 2 is formed by welding an arrow tip member 2b to a tip portion of a main body 2a formed by drawing a stainless steel pipe material. The base end side of the main body 2a is a connecting pipe portion 2c that receives a driving rod 11 for driving the anchor 1 into the ground. A pin 2d penetrating horizontally is welded to an intermediate portion of the main body 2a, and this forms the bottom of the connecting pipe portion 2c. The base end side of the main body 2a is an inclined end surface 2e that descends downward toward the rear.

  The pair of wing parts 3 extend radially from both lateral side surfaces of the central cylinder part 2 facing each other in the radial direction. The outer edge of the wing part 3 has a parallel side edge 3a extending parallel to the axis of the central tube part 2, and an inclined side extending linearly so as to converge toward the front continuously from the front end of the parallel side edge 3a. And an edge 3b. The wing part 3 includes a horizontal plane part 3c extending in the radial direction of the central cylinder part 2, a bent plane part 3d, and a flap part 3e. The bending plane part 3d is bent upward and extends along a crease 3f along the axis of the central cylinder part 2 at a predetermined distance from the central cylinder part 2 in the horizontal plane part 3c. The flap portion 3e continues to the rear end of the horizontal plane portion 3c, bends in parallel with the inclined end surface 2e of the central cylinder portion along the fold line 3g in the direction perpendicular to the axis of the central cylinder portion, and extends rearward.

  The bearing portion 4 is composed of a pair of parallel bracket pieces 4a that stand upward in a lateral direction from an upper side surface of the central cylindrical portion 2 that is approximately 90 ° away from the wing portion. The bracket piece 4 a has a bearing hole 4 b at a laterally opposed position, refracts so that the front approaches each other, and continues to the vertical wing part 5. A retaining pin 13 for rotatably connecting one end of the pulling member 12 formed of a chain or the like is inserted into and fixed to the bearing hole 4b.

  The vertical wing portion 5 has a substantially right triangular plate shape, is continuous with the front end of the bearing portion 4 on the opposite side on the rear end side, extends on the upper surface of the central tube portion 2 in the axial direction thereof, and descends in an inclined manner. It has a slope 5a.

  As shown in FIGS. 6A to 6E, the underground anchor 1 is installed and used in the bottom of the water. As shown in FIG. 6A, the pulling member 12 is connected to the bearing portion 4 via the pin 13, and the tip of the driving rod 11 is inserted into the connecting pipe portion 2c so as to stand vertically to the anchor 1, and a rock drill (not shown) An impact is applied to the driving rod 11 by a machine or the like, and the anchor 1 is driven into the ground of the bottom G as shown in FIG. 6B. The tip of the conical cylinder of the central tube 2 is robust and does not deform while traveling in the ground, and the anchor 1 is driven smoothly into the ground while removing the earth and sand from the outer periphery of the tip. . When the anchor 1 reaches a predetermined depth, the driving rod 11 is removed as shown in FIG. 6C, and the pulling member 12 is pulled up as shown in FIG. 6D. When the anchor 1 receives a pulling force by the pulling member 12, the tip 1 is rotated around the pin 13 while moving upward and rearward by the leading end of the inclined end surface 2e of the central cylindrical portion 2 and the flap portion 3e. As shown in FIG. 6E, a substantially horizontal state is reached. When the anchor 1 becomes almost horizontal in the ground, the resistance to the pulling force by the pulling member 12 increases rapidly and is fixed in the ground. Thereafter, the traction member 12 is connected to the structure to be moored. The wing part 3 refracted at the fold 35 is high in strength and is not easily deformed by a load when the anchor 1 is pulled up or an upward pulling force during fixing.

DESCRIPTION OF SYMBOLS 1 Anchor 2 Center cylinder part 2a Main body 2b Arrow tip member 2c Connection pipe part 2d Pin (bottom part)
2e Inclined end face 3 Wing 3a Parallel side edge 3b Inclined side edge 3c Horizontal plane part 3d Folded curved surface part 3e Flap part 3f Fold 3g Fold 4 Bearing part 4a Bracket piece 4b Bearing hole 5 Vertical wing part 5a Slope 11 Driving rod 12 Towing Member 13 pin

Claims (1)

An anchor that is driven into the ground from the tip side by a driving rod and is moored substantially horizontally in the ground by a traction member and moored in the ground,
The center tube portion, which is entirely made of metal, closes from the open proximal end side and extends straight so that the diameter gradually contracts toward the pointed front tip, and the center tube portion faces each other. A pair of wings extending radially from both lateral side surfaces, a bearing portion standing upward from an upper side surface of the central cylindrical portion that is approximately 90 ° away from the pair of wing portions, and a top end of the bearing portion. A generally triangular plate-shaped vertical wing having an inclined surface that is inclined downward toward the top surface of the front end of the central tube portion toward the front,
The central cylindrical portion includes, on the base end side, an inclined end surface that is lowered downward toward the rear, and a connecting pipe portion having a bottom portion that receives the driving rod for driving into the ground,
Outer edge of the wings, parallel side edges extending parallel to the axis of the central tubular portion, the axis of the pointed tip of the central tubular portion has unsuitable forward continuously the forward end of the parallel side edges comprising an inclined side edge portion extending linearly to focus I suited to the side of spaced locations in the direction,
The bearing portion is configured to be capable of supporting a retaining pin in a direction orthogonal to the axis of the central cylinder portion for rotatably connecting one end of the traction member,
The wing portion is bent upward along a fold along the axis of the central cylinder portion at a position a predetermined distance away from the central cylinder portion of the horizontal plane portion and a horizontal plane portion extending in the radial direction of the central cylinder portion. A bent flat surface portion that extends and continues to the rear end of the horizontal surface portion, and is parallel to the inclined end surface of the central tube portion along the fold line in the direction perpendicular to the axis of the central tube portion while being coupled to the side surface of the central tube portion. An underground anchor comprising a flap portion that bends and extends.

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