JP2008063857A - Anchor pile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anchor pile which is light but retains a sufficient anchoring force as an anchor that is used on a soft ground, such as sand beach, seabed, marshland, etc., and can be used repeatedly. <P>SOLUTION: The anchor pile includes a plate 10 having a pointed front end, ring-attached strings 11 and 12 that are fitted to the vicinity of the center and of the rear end of the plate 10, respectively, and a rod 17 fitted removably to the rear end of the plate 10. The plate 10 is fixed to the front end of the rod 17, and is driven into the ground, and then an object to be anchored is locked to a first ring 13 after pulling out the rod 17. The anchor pile has a point of application of force resulting near the center of the plate 10, thus produces no moment. As a result, the whole surface of the plate 10 receives bearing power of soil to offer a stable, large anchoring force. When the plate 10 is pulled out, a second ring 14 is pulled to cause the plate 10 to change its position along a direction of pulling to be pulled out without resistance. The anchor pile, therefore, can be applied to a soft ground, such as sand beach, and can be used repeatedly. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

      The present invention relates to an anchor pile used on soft ground such as a sandy beach, a seabed or a marsh.

      Conventionally, this type of anchor pile has a screw structure, root protrusion anchor, etc., but the screw structure needs to penetrate into the ground while rotating, and although the anchor force increases by the screw diameter, There is a drawback that a sufficient anchor force cannot be exhibited in soft ground such as marshes (for example, see Patent Document 1). In addition, there is an invention in which the locking piece (blade) that is in close contact with the shaft is locked in the open ground when the screw is rotated in the reverse direction. It has a structure to connect the locking pieces, and there is a question about the interference and strength with the earth and sand when entering the ground (for example, see Patent Document 2). The rooting protrusion anchor also has a plate size that can be accommodated in the steel pipe of the support rod, there is a limit to the anchor force increase, and it is necessary to provide a rooting mechanism in the pipe, which has a disadvantage that the structure becomes complicated (for example, Patent Document 3).

In any case, there is no suitable anchor pile for use in soft ground such as sandy beaches, underwater, and swamps in applications other than structural anchors for large-scale civil engineering buildings, such as fishing nets, dredges, small fishing boats, There are no anchor piles that are lightweight and have sufficient anchor force for buoys. Further, there is a demand for an anchor pile that is lightweight and has a sufficient anchoring force that can be used repeatedly, such as when a tent is stretched on a sandy beach.

In order to solve such problems of the prior art, a plate pile of a prior application (see Japanese Patent Application No. 2005-325625) is slidably fitted into a tubular outer rod for anchor pile and the outer rod. It has a double structure with the inner rod, fixed with a fulcrum shaft near the tip of the outer rod, attached an anchor plate with a plate and a lock arm across the fulcrum shaft, and when the anchor pile is driven into the ground, The anchor plate closes in the opposite direction to the driving, and after the driving, the anchor plate opens until it is locked by the stopper at the tip of the inner rod, and is locked in the ground. By setting the unlock position, the lock arm is disengaged from the stopper and the anchor plate is pulled out. It is obtained as exit without resistance closed pair direction. Although the present invention is effective as an anchor pile used for soft ground, there is a difficulty in applying it to a lightweight and small anchor pile having a complicated structure and excellent portability for use in a leisure tent or the like.
JP-A-2005-105756 JP2000-220141A JP 2004-52383 A

    The first object of the present invention is to provide an anchor pile that is lightweight as an anchor to be used on soft ground such as a sandy beach, the seabed, and swamps in view of the above-described problems of the prior art, and that can secure a sufficient anchor force. The second purpose is to achieve deeper anchoring force in order to achieve the first purpose, and can be driven deep into the ground, and when used on the seabed, pond bottom, etc. To provide anchor piles that can be driven. A third object is to provide an anchor pile having a function of maintaining and correcting a stable posture of the anchor plate in the ground when the anchor force is applied while achieving the first or second object. A fourth object is to provide an anchor pile that has a simple structure and is easy to handle while achieving the first, second, or third object. A fifth object is to provide an anchor pile that can be inserted and removed while achieving the first, second, third, or fourth object, and can be repositioned and reused with one anchor. thing. The sixth purpose is to anchor anchor piles that can ensure sufficient anchoring force even on soft ground such as sandy beaches, while using conventional peg anchors for leisure tents, etc. To provide. The seventh purpose is an anchor that can be used in a state where there is no obstacle such as a pile head on the ground surface while achieving the first, second, third, fifth or sixth purpose. To provide a pile.

    In order to achieve the first object, an anchor pile according to claim 1 includes a plate having a sharpened tip, an anchor string having one end attached near the center of the plate and a ring attached to the other end, A plate pulling string with one end attached to the rear end of the plate and a ring attached to the other end, and a flat surface that can be struck with a hammer at the rear end attached removably by the connecting means provided at the rear end of the plate It is comprised with the plate driving rod which has. The connecting means has a groove for fitting the plate to the tip of the rod and a groove for passing a string attached to the rear end of the plate, and a guide for fixing the rod tip is provided at the rear end of the plate. When connected, the plate and the rod are fixed linearly in the driving direction. As a result, when the plate is driven into the ground, the force applied by hitting the rear end head portion of the driving rod is configured as it is in the plate driving direction. After the plate is driven to an arbitrary position, the rod is pulled out with the plate left in the ground, and the string of the fixed object to be locked is tied to the ring attached to the anchor string while applying tension. wear. At this time, the anchor string fixed near the center of the anchor plate moves away from the plate in the tension direction starting from the fixed point, forms a straight line with a fixed string such as a tent, and the anchor string is connected to the plate via the fixed string. It has a structure that tensions between tents. The driving angle of the plate is not an absolute condition, but in order to obtain the maximum anchor force, the longitudinal direction and the width direction should be approximately 90 degrees with respect to the direction of the fixed string tension of the tent or the like to be locked. It is desirable to set. (Means 1)

      In order to achieve the second object, the anchor pile according to claim 1 is realized by setting the length of the plate driving rod detachably attached to the rear end of the plate to a length suitable for the application. Yes. When the plate is used on a sandy beach or the like, a rod having a length that allows the sand to reach a depth containing moisture and having a relatively strong ground strength is used. In addition, when the anchor plate is driven into the seabed, the pond bottom, etc., a rod having a length corresponding to the water depth is used, so that the anchor can be driven into the seabed or the pond bottom from the top of the ship or the anchor. . (Means 2)

  In order to achieve the third object, an anchor pile according to claim 2 includes a plate having a sharp tip, and both ends of a string fixed at two locations near the front end and the rear end of the plate. An anchoring ring is attached to the apex of an isosceles triangle having two sides of the string, and the extraction ring is attached to an arbitrary position of an intermediate point between the ring and the plate rear end fixing part of the string. It is comprised by. The method of driving the plate into the ground is performed using a driving rod in the same manner as the above method, and a fixing string such as a tent is tied to an anchor fixing ring while tension is applied. A function of correcting the angle until an equal force is applied to the two strings at the center, that is, until the plate and the string form an isosceles triangle is provided. (Means 3)

    In order to achieve the third object, the anchor pile according to claim 3 is arranged in the vicinity of the front and rear ends of the plate and in the vicinity of both ends in the width direction near the center of the plate, instead of the anchor string attached in the vicinity of the center of the plate. Fix the string to the place, tie the other ends of the four strings together, form a square weight with the plate as the bottom, connect the anchor fixing string with a ring from its apex, to the rear end of the plate Has a structure in which a string with a pull-out ring is connected. The method of driving the plate into the ground is performed using a driving rod in the same manner as in the method of the means 1, and the anchor string is locked by fixing the fixed string such as a tent to the anchor fixing ring. The four strings fixed to the anchor plate in the tensioning process move in the ground so as to share the tension equally, and the plate also moves in the direction of a square weight with the plate as the bottom, resulting in a moment on the plate It moves to the state which does not act, and it is set as the structure where tension | tensile_strength is fixed between fixed strings, such as a plate and a tent. That is, the anchor plate has a self-posture correction function so that the anchor plate is perpendicular to the tension direction of the anchor in the ground. (Means 4)

    In order to achieve the third object, the anchor pile according to claim 5 has a triangular shape in contact with one side in the longitudinal direction of the plate instead of the anchor string attached to the plate and perpendicular to the plate plane. The plate is connected, and the anchor plate fixing hole is provided at the apex of the triangular plate. The rear end of the plate has a flat surface that can be struck with a hammer for driving the plate into the ground. The anchor pile with the triangular plate attached is driven into the ground, and the fixed string such as a tent is fastened to the anchor string fixing hole to fix the anchor pile. Even so, since the anchor plate is received by the surface in both the longitudinal direction and the lateral direction, the structure at the time of driving is always maintained and stabilized. (Means 5)

    In order to achieve the fourth object, the anchor pile according to claim 4 has a structure in which the use, i.e., the driving depth, is limited to some extent and the main focus is on ease of handling, and the plate and the driving rod are integrated. The rod has a structure and has a length suitable for the application. When driving the anchor into the ground, hammer the hammering head of the rod fixed to the rear end of the plate, drive it into the ground, fix one end near the center of the plate, and attach the first ring to the other end. The usage method as an anchor for linking a fixed string of an object to be fixed such as a tent to the first ring portion of the attached anchor string is the same as the means 1, 3, and 4. Since the plate and the driving rod form an integral structure, the labor of the connection can be saved, and the number of parts is small and easy to handle. (Means 6)

    In order to achieve the fifth object, the anchor piles according to claims 1, 2, 3, and 6 have an anchor string fixed at the point of action of the force as an anchor, that is, near the center of the plate. Separately, a pulling string having a point of action of force is fixed to the upper end of the plate, and when pulling out the anchor, the string is pulled upward so as to have an angle with respect to the vertical direction in the ground. The driven plate is made to come out without resistance while changing its posture in the pulling direction of the string. Furthermore, a connecting string is provided between the ring attached to the anchor string and the pulling string to improve ease of handling. (Means 7)

    In order to achieve the sixth object, the anchor pile according to claim 6 is a peg anchor generally used in a leisure tent or the like, and is detachable near the center in the longitudinal direction of the peg anchor and at the rear end. A string connected to is provided, and a first ring and a second ring are provided at the other end of the string, respectively. When the peg anchor is used on a normal ground having sufficient ground strength, the string is removed and used as a peg anchor in a conventional manner.When used on a soft ground such as a sandy beach, the peg anchor is attached, After the peg anchor is driven, a fixed object such as a tent is connected to the first ring, and the point of action of the anchor force is changed to the vicinity of the center in the longitudinal direction of the peg anchor so that it can be used as an anchor pile that does not generate a moment. The peg anchor can also be driven deeply into the ground using a detachable driving rod, as in the case of the means 1. (Means 8)

    In order to achieve the seventh object, the anchor pile according to claims 1, 2, 3 and 6 has a structure in which the plate and the driving rod are detachably connected, so that when the plate is driven, Connect the driving rod, and after driving, leave only the plate in the ground, pull out the rod, connect the fixed string of the object to be fixed to the first ring provided on the anchor string on the ground surface, and When the plate is pulled out, the plate is pulled out by pulling up a second ring provided on the pull-out string on the ground surface. (Means 9)

    According to the first means, the string to be fixed is tied to the first ring attached to the other end of the plate driven into the ground and the string fixed near the center of the plate, and tension is applied. By this, the plate can receive the ground strength of the ground almost uniformly without receiving any moment, and the anchor pile used in the past is fixed to the head part that has jumped out into the ground after being driven into the ground. The anchor string of the object is locked, and the anchor pile head receives a moment due to the tension, and is rotationally displaced around the point of zero moment, and the anchor strength is obtained by the ground strength of the ground corresponding to the displacement. As a result, an anchor force several times larger than the above can be obtained. In general, it is considered that the soil strength is proportional to the density of the soil if the soil properties are constant, and it is well known that the soil strength increases as the ground surface becomes zero and deeper in the ground. However, as described above, the normal anchor pile uses the ground surface part with the weakest earth bearing strength to tie the string of the object to be fixed to the head part that jumps out on the ground as described above, According to the first means, since the structure can be driven into a deep position where the earth bearing strength is relatively large, a significantly larger anchor force can be easily obtained as compared with an existing anchor pile. Moreover, when producing as an anchor pile only for soft ground, since there is little resistance at the time of driving, a plate can be enlarged and it is also possible to raise anchor force further.

  The anchor force in the means 1 will be described based on a simple model of the plate driven into the ground. When a tension is applied between the fixed point of the string near the center of the plate driven into the ground and the object to be fixed on the ground with a string, the plate receives a drag (reaction) due to the ground strength of the land, At this time, when there is a force application point at a point where the fixed point near the center of the plate is zero moment, no moment is generated and the following equation (1) is established.

FIG. 1 considers a model in which a plate having a width of 1 cm and a length of Lcm has a moment zero point in the ground as a force application point and is pulled by an anchor force P1 to generate a displacement of Δxcm. Assuming that the earth bearing strength with respect to the displacement Δxcm is Gkg / cm ² , the earth bearing strength applied to the plate is all uniform in the ground, and the earth bearing strength G is proportional to Δxcm, the drag Pm due to the earth bearing force is expressed by equation (2).

したがって、Ｐ₁、Ｐ_２のアンカー力の大きさの比は

即ち、（４）式より端部にアンカー紐をかけるケースに比べ、モーメント０ポイントを力の作用点とした場合、理論的には約2.8倍のアンカー力アップが可能である。しかし現実には、地耐力が地中深さや地質等種々条件により変化するため力の作用点をモーメント0のポイントに設定することは難しく、上記値よりは小さくなるが、従来のアンカー杭が地上に飛び出した杭のフック部にアンカー紐を引っ掛ける構造に対し、プレートと打ち込みロッドを組み合わせた本発明のアンカー杭は、より地耐力の高い深い地中にアンカーを打ち込めること、及び、プレートの面積を従来のペグ構造アンカーに比べ何倍も大きくできること、さらに、砂地は砂の特性上透水性が高く、表層部は乾燥し地耐力が低く、あるレベル以上深くなると逆に地下水分を吸い上げて湿潤状態となっており地耐力が上がる。このため土地の表層部を利用する従来のペグ構造のアンカーは、砂地では全くアンカーとしての機能を果たさなかったが、本発明のアンカーの場合、同砂地で大きなアンカー力を確保することが可能である。 FIG. 2 shows a model of an anchor pile in which an anchoring force is applied to the end b point of the plate, and FIG. 3 shows it as a vector. Assuming anchor force P ₂ to point b to the conditions described above yielded takes displacement Derutaxcm, plate, rotational moment resultant force Pmb around axis points a point of moment 0, Pmc is point c, point d appear. The distance M from the center a of the points c and d is L × √2 / 4 due to the weighted average of the triangles. Therefore, equation (3) is established from the balance of moments.

Therefore, the ratio of the magnitudes of the anchor forces of P ₁ and P ₂ is

That is, the anchor force can be theoretically increased by about 2.8 times when the moment 0 point is used as the force application point, as compared with the case where the anchor string is attached to the end from the equation (4). However, in reality, it is difficult to set the point of action of the force as the zero moment point because the ground strength changes depending on various conditions such as underground depth and geology. The anchor pile of the present invention combining the plate and the driving rod with respect to the structure in which the anchor string is hooked on the hook portion of the pile that protrudes into the pile, the anchor can be driven into the deep ground with higher earth resistance, and the area of the plate is reduced. It can be many times larger than conventional peg structure anchors, and sandy soil is highly permeable due to the characteristics of sand, the surface layer is dry and has low ground strength, and when it gets deeper than a certain level, it absorbs underground moisture and gets wet And the earth resistance is increased. For this reason, the conventional peg structure anchor that uses the surface layer of the land did not function as an anchor at all in the sand, but in the case of the anchor of the present invention, it is possible to secure a large anchor force in the sand. is there.

Table 1 shows the results of a comparative test of the anchor force when the existing peg anchor is used in the past (with a string attached to the hook on the ground) and the point of action of the force is near the center of the anchor.
As a result of the experiment shown in Table 1, the anchor force is increased approximately twice by changing the force application point to the vicinity of the center of the pile, which almost agrees with the formula. Further, it is easily assumed that the anchor force can be further increased by increasing the driving depth and increasing the plate area.

      According to the means 2, by separating the driving rod from the plate, a driving rod having a length suitable for the application can be used. An anchor can be driven from the top of the ship or the anchor, and when a plate is driven deeper into the ground in order to obtain a stronger anchor force, by preparing a driving rod of a length corresponding to the same depth, There is an effect that the optimum selection can be made according to the conditions.

According to the means 3, both ends of the string are connected in the vicinity of the front end and the rear end of the plate, a ring is attached to the middle point, and after the plate is driven into the ground, a fixing rope such as a tent is connected to the ring, By tensioning the plate, the plate moves in the ground until it forms an isosceles triangle with the longitudinal direction of the anchor pile as the base and the ring at the top. There is an effect to show. The ground has sufficient earth bearing capacity, and even if a tensile load is applied to the ring at the apex of the triangle, it is assumed that the plate does not move. The function is fulfilling enough.

    According to the means 4, like the means 3, the plate moves in the ground so that an equal load due to tension is applied not only in the longitudinal direction but also in the width direction, forming a quadrangular pyramid having the plate as a bottom surface. There is an effect that the position is moved to an angle that exhibits the most stable maximum anchor force that does not apply the moment in the longitudinal direction and the width direction.

    According to the means 5, in the anchor pile in which the plate and the driving rod form an integral structure, a triangular plate is attached instead of the anchor string attached to the plate, and the anchor string is attached to the apex of the triangular plate. With the structure having the fixing hole, when the anchor is driven into the ground, it can always be driven so that the position of the string fixing hole is perpendicular to the plate. The anchor pile has the effect of maintaining a stable position.

    According to the means 6, the length of the rod is fixed by integrating the plate and the driving rod in the means 1, 3 and 4 with a single structure. By setting the rod length to have an optimum anchor force, there is an effect of simultaneously obtaining the optimum anchor force and the ease of handling similar to a peg anchor that is generally used conventionally.

According to the means 7, in the anchor pile where the plate and the driving rod in the means 1, 3 and 4 are separated, when the plate left in the ground is pulled out, the anchor string is pulled out. Can not pull out due to the resistance of the plate. By pulling out the plate in the ground, the posture of the plate is raised by pulling up the pull-out cord by pulling out the plate in the ground by providing a pull-out cord with one end fixed to the rear end of the plate and the second ring attached to the other end. It becomes possible to pull out easily with a small resistance corresponding to the cross-sectional area of the rear end of the plate.
Also, by providing a connecting string between the anchor string and the ring attached to the withdrawal string, a single string with both ends fixed to the plate is attached, and there is an effect that the handling becomes easy.

According to the above means 8, when a peg anchor generally used for a leisure tent or the like is detachably attached to the center and the rear end of a peg anchor, the string with a ring is detachably attached, so that it can be used on the ground having sufficient ground strength. As usual, the anchor string can be fixed to the head hook of the anchor pile as before. At the same time, when used on soft ground such as sandy beach, the anchor is attached and the anchor point is changed to change the anchor force. Can be used with increased strength. That is, there is an effect that one anchor pile can be used properly so as to obtain an optimum anchor force according to the ground condition.
Similarly to the means 1, by using a detachable driving rod adapted to the peg anchor, the peg anchor can be driven deeply into the ground, and the effect of easily obtaining the necessary anchor force can be obtained. is there.

    According to the means 9, the plate can be used in a state where it is buried in the ground, and as a result, there is an effect that it can be used in a state where there is no obstacle on the ground surface.

      Embodiments of the invention will be described with reference to the drawings.

FIG. 4 shows a state diagram before driving the anchor pile of the present invention, and FIG. 5 shows that the anchor pile of the present invention is driven into the ground, the driving rod is pulled out, and then the string of the object to be fixed is fixed to the ring and tension is applied. The state diagram when stretched is shown. FIG. 6 shows a state diagram when the anchor pile is pulled out, and FIGS. 7 and 8 show an AA sectional view and a BB sectional view of FIG. 4, respectively. In FIG. 4, a first through hole 15 is provided at the center in the width direction of the plate 10 with a sharpened tip and in the vicinity of the center in the vertical direction, and one end of the anchor string 11 is fixed. A first ring 13 is attached to the other end of the anchor string. A second through hole 16 is provided at the rear end portion of the plate, and an anchor pile drawing string 12 is connected thereto. A plate pulling second ring 14 is attached to the end of the string 12. A driving rod 17 is detachably set on the tail end of the plate 10. A plate fixing groove 20 for fitting the plate 10 and a groove 19 for passing the drawing string 12 are provided at the tip of the driving rod 17, and guides 21 for fixing the rod 17 are provided at two positions on the plate 10. . A striking head 18 is provided at the tail end of the rod 17 so that it can be hit with a hammer. Here, the area of the plate 10 and the length of the driving rod 17 are determined in accordance with the purpose in consideration of the ground strength of the ground using this anchor and the required anchor force.

      In FIG. 5, the broken line indicates the ground boundary line, G indicates the ground, and S indicates the air. After the plate 10 is driven into the ground, when the driving rod is pulled out, the fixed string 25 such as a tent is tied to the first ring 13 of the anchor string 11 that has come out of the plate 10 that has been driven into the ground. In this direction, the string moves linearly, and tension is maintained between the plate 10 and the fixed string 25 such as a tent. When the plate 10 is driven into the ground, the anchor cord 11 and the withdrawal cord 12 have a sufficient length so that the first ring 13 and the second ring 14 attached to the cord 10 remain on the ground surface.

      FIG. 6 shows a state diagram when the plate 10 is pulled out. In FIG. 6, when the second ring 14 of the pullout string 12 attached to the tail end of the plate 10 is pulled up vertically, the posture of the plate 10 that has been driven into the ground at an arbitrary angle is corrected in the pulling direction, The plate 10 can be pulled out with a small force only with the resistance of the soil to the cross section of the plate 10.

      FIG. 7 shows a cross-sectional view taken along the line AA of FIG. An anchor string 11, a play, and a draw string 12 are connected to the vicinity of the center of the plate 10 and the first through hole 15 and the second through hole 16 at the tail end, respectively. Further, an anchor driving rod 17 having a groove 20 that fits into the plate and a groove 19 through which the drawing string 12 passes is provided at the tail end of the plate 10, and a guide 21 that fixes the rod is provided on the plate 10 side. The driving rod 17 is detachably attached to the plate 10 by the fitting groove 20 and the guide 21, and the plate 10 and the driving rod 17 are fixed by the plate fixing groove 20 and the guide 21 so as to be in a straight line in the driving direction. Further, the driving rod 17 is reduced in weight by a pipe structure, and has a striking head 18 at the tail end. FIG. 8 shows a cross-sectional view taken along the line BB in FIG. A guide 21 for fixing the driving rod 17 is fixed to the plate 10, and a drawing string 12 is fixed to the center portion in the width direction by a string fixing terminal 26. Further, the drawing rod 17 is fixedly connected by the guide 21 and the plate fixing groove 20.

      FIG. 9 shows an embodiment in which the anchor string 11 and the first ring 13 and the second ring 14 attached to the anchor pull-out string 12 are fixed with a connecting string 27 in the first embodiment, thereby improving the ease of handling. Show. In FIG. 9, when the fixed string 25 is connected to the first ring 13 and tension is applied, the anchor string 11 is tensioned, but the withdrawal string 12 and the connecting string 27 are loose. Further, the length of the connecting string 27 is determined so that the anchor string 11 and the connecting string 27 are loosened when the second ring 14 is pulled up and pulled out to pull out the plate 10 and tension is applied to the extracting string 12.

FIG. 10 shows that the ends of the anchor piles in the ground when the ends of the plate 10 are connected to the ends of the plate 10 and a rope for fixing a tent or the like is connected to the first ring 13 at the middle point and tension is applied. The embodiment shows an embodiment in which the plate 10 moves in the ground and is in a stable position without receiving a rotational moment until an isosceles triangle having the direction as the base and the first ring 13 as the apex is formed. The connection method of the anchor 10 and the driving rod 17 is the same as that of the first embodiment. At the time of drawing, the second ring 14 attached to the drawing string 11 is pulled out vertically or in a direction opposite to the driving direction of the play 10, and the positions of the string and the ring are determined so as to be pulled out without resistance (the same as in the second embodiment). ).

      FIG. 11 shows an embodiment having a function of correcting the posture of the plate 10 not only in the longitudinal direction but also in the width direction. The plate 10 is provided with four holes 15 for connecting anchor strings at four positions on the top, bottom, left, and right. One end of the string is connected to each of the plates 10, and the other end is collectively connected to the anchor string 11. . When a rope for fixing a tent or the like is connected to the first ring 13 and tension is increased, the four strings fixed to the plate 10 in the process of tensioning move through the ground so as to share the tension equally, The plate moves until it becomes a square weight with the plate 10 as the bottom surface. As a result, tension is applied between the plate 10 and a fixed string such as a tent in a stable state where no moment acts on the plate 10 in the vertical and horizontal directions. The structure is stopped. The method for driving and pulling out the plate is the same as in the third embodiment.

    FIG. 12 shows an embodiment in which the plate 10 and the driving rod 17 are integrated. Although the basic structure is the same as that of the first embodiment, the plate 10 and the fixed rod 28 for driving are fixed, and the driving depth is determined by the length of the rod. It is a condition. For example, on the beach of a beach, since the sand is wet about 10 cm below the ground surface, the length of the rod is set to 10 cm + α. The driving and anchor locking methods are the same as those in the first embodiment. When pulling out, hold the rod end and pull it out.

FIG. 13 shows an embodiment in which a triangular plate is attached instead of the anchor string 11 of the first embodiment. A triangular plate 29 is connected to the plate 10 perpendicularly to the plane of the plate 10. A fixed string locking hole 30 is attached to the triangular plate 29, and a striking head 18 is attached to the tail end of the plate. The plate 10 is driven to a position where the striking head 18 and the fixed string locking hole 30 do not sink into the ground, and the fixed string 25 is locked in the fixed string locking hole 30. At this time, the anchor force is received by the plate 10. The plate 29 has a function of maintaining the posture when driven by receiving a lateral force by the plate 29.

      FIG. 14 shows an embodiment in which a detachable anchor rope is attached to a peg type anchor pile generally used for a tent or the like. Near the center in the longitudinal direction of the L-shaped peg anchor main body 38 and at the tail end, a first through hole 15 for fixing a rope and a second through hole 16 are installed, and a first ring 13 and a second ring 14 are respectively installed at the other ends. An anchor string 11 and a pull-out string 12 provided with detachable are provided. Further, a connecting string 27 is connected between the first ring 13 and the second ring 14, and a peg anchor string locking groove for locking the fixed string 25 of the object to be fixed is provided at the rear end of the peg anchor main body 38. 39 and the same locking hole 40 are provided. When using this anchor in a place with sufficient ground strength, remove the cords 11 and 12, drive the peg anchor body 38 in the same way as before, leave the header on the ground, and lock the header. Tightening a fixed string such as a tent to the groove 39 or the locking hole 40, and when using it on soft ground such as a sandy beach, attach the strings 11 and 12 to increase the anchor force as a momentless anchor pile. To use. Although not shown in the drawing, a drawing string 12 is provided, and by using a driving rod as in the first embodiment, it is possible to drive deeper into the ground and further increase the anchoring force.

    FIG. 15 shows an embodiment in which the fins 41 are detachably attached to the peg anchor 38 of the sixth embodiment. Although details are omitted, the fin 41 is fixed to the peg anchor with a hook or a bolt. Thereby, when using an anchor on soft ground, if the force is insufficient with only the peg anchor, it is possible to increase the anchor force by the area of the fin 41 by attaching and using the fin 41.

    FIG. 16 is a view in which the anchor string 11 is attached to the first through hole 15 in the central portion in the longitudinal direction of a resin-made peg anchor 32 that is generally used, and the usage is the same as in the sixth embodiment. At the tail end of the peg anchor 32, a driving head 35 and a fixing hook 37 are provided.

The present invention has a feature that a large anchoring force can be obtained even on sandy beaches and soft land, and the anchoring force required can be easily obtained by freely selecting the driving depth. Compared to pile anchors, taking advantage of the ability to obtain a large anchor force with a small size, for the construction of tents, parasols, sunshades, etc. on the coast, which were not possible with conventional anchors, for fixing fishnets, for small vessels In addition to being used for stopping, etc., it can be used as a compact anchor that prevents piles from popping out on the ground, such as for fixing a simple house / agricultural house, supporting garden trees, etc.

Momentless anchor principle diagram Peg anchor principle diagram Peg anchor vector illustration State diagram before anchor pile driving Anchor pile in use state diagram Anchor pile drawing state diagram AA sectional view of FIG. BB sectional view of FIG. Anchor string, drawing string coupled anchor pile diagram Anchor pile with anchor plate posture correction function (vertical direction) Anchor pile with anchor plate posture correction function (vertical and horizontal direction) Anchor pile with integrated plate and driven rod Anchor pile with anchor plate posture maintenance function Momentless peg anchor diagram Momentless peg anchor with removable plate Momentless peg anchor diagram

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plate 11 Anchor string 12 Pull-out string 13 1st ring 14 2nd ring 15 1st through-hole 16 2nd through-hole 17 Driving rod 18 Strike head 19 String through groove 20 Plate fixing groove 21 Guide 25 Fixed string 26 String fixing terminal 27 Connecting string 28 Fixed rod 29 Triangular plate 30 Fixed string locking hole 32 Peg anchor 35 Impact head 37 Hook 38 Peg anchor main body 39 Peg anchor string locking groove 40 Peg anchor string locking hole 41 Fin S Aerial G Ground

Claims (6)

    A plate with a sharp tip, one end fixed near the center of the plate, a string with a first ring at the other end, one end fixed at the rear end of the plate, and a second ring at the other end A connecting rod detachably connected by a connecting means provided at the rear end portion of the plate, and a driving rod having a striking head at the rear end portion, and the connecting means attaches the plate to the tip of the driving rod. An anchor pile having a groove to be fitted and a groove for passing a string provided at a rear end portion of the plate, and a guide for fixing the tip of the driving rod at the rear end portion of the plate. The two ends of the string are fixed at two locations near the front end and the rear end of the plate, a first ring is provided at the apex of an isosceles triangle having the plate as the base and the string as two sides, and the ring and the The anchor pile according to claim 1, wherein a second ring is provided at an arbitrary position of an intermediate point between the string and the plate rear end fixing portion.     A square weight with one end of the string fixed at four locations, near the front and rear ends of the plate, and near both ends in the width direction of the center of the plate, and the other ends of the four strings tied together, with the plate as the bottom surface The anchor pile according to claim 1, wherein one end of another string is fixed to the apex thereof, and a first ring is provided at the other end of the string.     4. An anchor pile according to claim 1, wherein said plate and said driving rod form an integral structure.       5. A triangular plate having one side of a triangle connected in the vertical direction in the horizontal center of the plate is provided perpendicular to the plate, and has a through hole at the apex of the triangle. Anchor pile.       In a peg anchor generally used for a leisure tent, etc., one end is detachably connected to the vicinity of the center in the longitudinal direction and the rear end of the peg anchor, and the first ring and the second ring are respectively connected to the other end. The anchor pile according to claim 1, wherein the anchor pile is provided with a string attached thereto.

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