JP3195339U - Pile driver adapter - Google Patents

Abstract

Provided is a pile driving adapter capable of easily and reliably driving a single pipe pile into the ground using a construction machine. A pile driving adapter 1 which can be attached to the upper end of a single pipe pile driven into the ground, is formed in a cylindrical shape, and a pipe insertion portion 2 into which the upper end of the single pipe pile can be inserted, and this pipe A wall portion 3 that closes the upper end of the insertion portion 2 and a rod difference that is formed in a cylindrical shape substantially coaxial with the tube insertion portion 2 at the upper portion of the wall portion 3 and into which a rod of a breaker for a construction machine can be inserted. And an inset portion 4. It is good to incline so that the lower part of the inner wall surface of the rod insertion part 4 may reduce in diameter. The length of the rod insertion portion 4 in the vertical direction is preferably 80 mm or more. The minimum vertical thickness of the wall 3 is preferably 15 mm or more. A heat dissipation groove may be formed on the outer peripheral surface of the rod insertion portion 4. [Selection] Figure 1

Description

  The present invention relates to a pile driving adapter.

  In construction sites, for example, when laying temporary fences, pipe scaffolds, retaining walls, etc., a single pipe pile driven into the ground is often fixed as a foundation. Moreover, when installing the stand for solar power generation panels etc., the fixation by a single pipe pile is performed.

  Single pipe piles are generally driven into the ground by striking the top with a hammer weighing, for example, 3 kg to 5 kg. If the upper end of the single pipe pile is crushed by this driving work, it becomes difficult to reuse the single pipe pile. Has been proposed (for example, JP 2007-126916 A).

  The use of such a metal fitting considerably reduces the requirement for hammering accuracy, but in the first place, driving a single-pipe pile using a hammer is a heavy labor. Such a pile driving operation with a hammer is limited to about 30 per person per day. In particular, when the ground is hard, it is very difficult to drive a single pipe pile with a hammer, and workability is further reduced.

  Pile driving is also performed by attaching a fitting fitting to the upper end of a single pipe pile to a rod (chisel) of a hand breaker (hole drilling machine). However, hand breakers usually use compressed air as a drive source and can be used only within the reach of the hose from the air compressor, and it is necessary to move the air compressor using a crane or the like each time a pile is driven. In addition, such a hand breaker metal fitting is not versatile, and it is required to create a different shape for each breaker rod.

  It has also been proposed that a plate is attached to a breaker rod for a construction machine (hydraulic excavator) to be used as a simple pile driver (see, for example, JP-A-2002-129560). However, in the simple pile driving machine described in the above publication, the single pipe pile cannot be held vertically, and there is a risk that the single pipe pile falls down.

JP 2007-126916 A JP 2002-129560 A

  In view of the above disadvantages, an object of the present invention is to provide a pile driving adapter that can easily and reliably drive a single pipe pile into the ground using a construction machine.

  The idea made in order to solve the above problems is a pile driving adapter that can be attached to the upper end of a single pipe pile that is driven into the ground, and is formed into a cylindrical shape, and a pipe difference that allows the upper end of the single pipe pile to be inserted inside. An insertion part, a wall part that closes the upper end of the pipe insertion part, and a cylindrical part that is substantially coaxial with the pipe insertion part at the top of the wall part, and a rod for a breaker for construction machinery can be inserted inside It is a pile driving adapter characterized by including a rod insertion part.

  Since the pile driving adapter has a cylindrical rod insertion portion into which the rod of the breaker for a construction machine can be inserted, the single pipe pile and the rod of the breaker can be engaged with each other. For this reason, by using the said pile driving adapter, even if it does not make the rod of the breaker for construction machines exactly vertical, it is possible to prevent the impact force from escaping to the side and the single pipe pile from falling down. Therefore, a single pipe pile can be driven into the ground easily and reliably by using the pile driving adapter.

  It is good to incline so that the lower part of the inner wall surface of the said rod insertion part may reduce in diameter. As described above, since the lower portion of the inner wall surface of the tube insertion portion is inclined, a rod having an arbitrary shape can be positioned on the axis of the rod insertion portion by its striking force. Thereby, a single pipe pile can be driven stably in the ground.

  The vertical length of the rod insertion part is preferably 80 mm or more. Thus, when the rod insertion part has the length in the vertical direction, it is possible to prevent the breaker rod from being unintentionally detached from the pile driving adapter.

  The minimum thickness in the vertical direction of the wall is preferably 15 mm or more. Thus, when the wall portion has the above thickness, the wall portion is prevented from being damaged by the strong striking force of the construction machine breaker, and the single pipe pile can be reliably driven into the ground.

  A heat dissipation groove may be formed on the outer peripheral surface of the rod insertion portion. Thus, by having the heat radiating groove, heat generated by the strong striking force of the breaker for construction machinery can be dissipated.

  As described above, by using the pile driving adapter of the present invention, a single pipe pile can be driven into the ground easily and reliably using a construction machine.

It is a typical sectional view showing the pile driving adapter of one embodiment of the present invention. It is a typical side view which shows the pile driving adapter of FIG. It is a schematic diagram which shows the use condition of the pile driving adapter of FIG. It is typical sectional drawing which shows the detail of the use condition of the pile driving adapter of FIG. FIG. 5 is a schematic cross-sectional view showing details of a usage state of a pile driving adapter when a rod different from that in FIG. 4 is used.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as appropriate.

[Pile driver adapter]
1 and 2 show a pile driving adapter 1 according to an embodiment of the present invention. FIG. 1 shows a cross-sectional shape of the pile driving adapter 1, and FIG. 2 shows an appearance of the pile driving adapter 1.

  As shown in FIG. 3, the pile driving adapter 1 is attached to the upper end of the single pipe pile P driven into the ground, and enables the single pipe pile P to be piled by the construction machine (hydraulic excavator) S. More specifically, the pile driving adapter 1 is attached to the tip of the arm A of the construction machine S, and mainly uses the striking force of the rod (chisel) R of the breaker B used for crushing concrete. The single pipe pile P can be driven into the ground.

  The single-pipe pile P driven into the ground by the pile-driving adapter 1 is not particularly limited, but is a single-pipe pipe generally used for a pipe scaffold or the like at a construction site or the like, and has an outer diameter of 48.75 according to JIS-G3444. Those having a diameter of 6 mm are preferably used. A conical cap may be attached to the tip of the single pipe pile P that is driven into the ground.

  The construction machine S used for driving the single pipe pile P into the ground using the pile driving adapter 1 is not particularly limited, but a small backhoe of about 2 to 3 tons is assumed. The breaker B may be anything that can be attached to the construction machine S. As the rod R to be mounted on the breaker B, for example, a moire point rod having a quadrangular pyramid tip, a flat rod having a cylindrical tip, a ball point rod press-fitted with a hard member at the center of the tip, etc. Everything is usable.

  Although the dimension of the said pile driving adapter 1 can be changed according to the magnitude | size of the single pipe pile P, hereinafter, as the single pipe pile P, the most general single pipe pipe based on said JIS-G3444 or this is used. It demonstrates as what uses the pipe which has a near diameter.

  The pile driving adapter 1 is formed in a cylindrical shape, and a tube insertion portion 2 that defines a single tube insertion hole into which the upper end of the single tube pile P can be inserted, and the upper end of the tube insertion portion 2 are closed. A wall portion 3 to be formed, and an upper portion of the wall portion 3 which is formed in a cylindrical shape substantially coaxial with the pipe insertion portion 2 and defines a rod insertion hole into which the rod R of the breaker B for construction machinery can be inserted. And a rod insertion part 4 to be provided. In the pile adapter 1, a plurality of heat radiation grooves 5 are formed on substantially the entire outer peripheral surface of the rod insertion portion 4 and on the upper portion of the outer peripheral surface of the wall portion 3.

  The pile driving adapter 1 is formed of a material such as a metal having a high strength. As the metal forming the pile driving adapter 1, molybdenum steel having toughness is particularly preferably used. Examples of the molybdenum steel used for the pile adapter 1 include SCM435 and SCM440 defined in JIS-G4105 (2003).

  As the manufacturing method of the said pile driving adapter 1, it can be set out by machining from a metal lump using, for example, a lathe. By manufacturing in this way, it is possible to make the pile driving adapter 1 with few defects inside and difficult to break. In addition, for example, it can be manufactured by casting, welding a plurality of parts, or the like, and these processes may be combined.

<Pipe insertion part>
The tube insertion part 2 is preferably formed in an annular cylindrical shape in cross section. The inner wall surface of the tube insertion portion 2 is preferably substantially parallel to the central axis in the vertical direction of the tube insertion portion 2 and may be slightly inclined so as to increase in diameter downward. Further, the outer wall surface of the tube insertion portion 2 may be slightly inclined so as to reduce the diameter in parallel or downward with respect to the central axis of the tube insertion portion 2. The “center axis” of the tube insertion portion 2 means a vertical axis that passes through the center of gravity of the tube insertion portion 2.

  As a minimum of the average inside diameter of tube insertion part 2, 50 mm is preferred, 55 mm is more preferred, and 58 mm is still more preferred. On the other hand, as an upper limit of the average internal diameter of the tube insertion part 2, 70 mm is preferable, 65 mm is more preferable, and 62 mm is further more preferable. When the average internal diameter of the pipe insertion part 2 is less than the said minimum, there exists a possibility that attachment to the upper end of the single pipe pile P of the said pile driving adapter 1 may become easy. On the contrary, when the average inner diameter of the pipe insertion part 2 exceeds the upper limit, the pile driving adapter 1 may be unnecessarily large and heavy, and may be difficult to handle, or may be inclined with respect to the single pipe pile P. This may cause the single pipe pile P to fall down or deform the upper end of the single pipe pile P during pile driving. An example of such an average inner diameter of the tube insertion portion 2 can be 60 mm. The “average inner diameter” means the diameter of a perfect circle having the same cross-sectional area, that is, the equivalent circle diameter.

  As a minimum of the average length of the up-and-down direction of pipe insertion part 2, 30 mm is preferred, 40 mm is more preferred, and 50 mm is still more preferred. On the other hand, as an upper limit of the average length of the tube insertion part 2, 100 mm is preferable, 80 mm is more preferable, and 60 mm is further more preferable. When the average length of the pipe insertion part 2 is less than the said lower limit, the said pile driving adapter 1 becomes easy to drop | omit from the single pipe pile P at the time of a pile driving operation, and there exists a possibility that operation of the construction machine S may become difficult. On the contrary, when the average length of the pipe insertion part 2 exceeds the said upper limit, the said pile driving adapter 1 will unnecessarily enlarge and weight, and there exists a possibility that handling may become easy. As an example of the average length of such a tube insertion part 2, it can be set to 55 mm.

  As a minimum of average thickness in the lower end of pipe insertion part 2, 3 mm is preferred, 5 mm is more preferred, and 6 mm is still more preferred. On the other hand, the upper limit of the average thickness at the lower end of the tube insertion portion 2 is preferably 15 mm, more preferably 12 mm, and even more preferably 10 mm. When the average thickness in the lower end of the pipe insertion part 2 is less than the said minimum, the intensity | strength of the opening part of the pipe insertion part 2 becomes inadequate, and there exists a possibility that the said pile driving adapter 1 may fracture | rupture or deform | transform at the time of pile driving. On the other hand, when the average thickness at the lower end of the pipe insertion part 2 exceeds the upper limit, the pile driving adapter 1 may be unnecessarily enlarged and weighted, and handling may not be easy. As an example of the average thickness at the lower end of such a tube insertion part 2, it can be 7 mm.

  The average thickness at the upper end of the tube insertion portion 2 is preferably equal to or greater than the average thickness at the lower end. Moreover, it is preferable to set the outer diameter of the upper end of the tube insertion part 2 to the same outer diameter as the wall part 3 so that the integrity of the outer shape with the wall part 3 and the rod insertion part 4 described later can be obtained. . For this reason, you may form the outer wall surface of the pipe insertion part 2 so that it may expand in diameter toward the upper side.

<Wall>
The wall portion 3 is integrated with the tube insertion portion 2 so as to seal the upper end of the tube insertion portion 2. The ceiling surface 6 exposed in the internal space of the tube insertion portion 2 is recessed in a conical shape or a truncated cone shape substantially coaxial with the tube insertion portion 2.

  The lower limit of the inclination angle of the ceiling surface 6 with respect to the virtual horizontal plane perpendicular to the central axis of the tube insertion portion 2 is preferably 3 °, more preferably 5 °, and even more preferably 7 °. On the other hand, the upper limit of the inclination angle of the ceiling surface 6 is preferably 20 °, more preferably 15 °, and even more preferably 12 °. When the inclination angle of the ceiling surface 6 is less than the lower limit, there is a possibility that the upper end of the single pipe pile P is easily deformed so as to spread outside during pile driving. Conversely, when the inclination angle of the ceiling surface 6 exceeds the upper limit, the upper end of the single-pipe pile P may be easily crushed inward during pile driving. An example of such an inclination angle of the ceiling surface 6 can be 9.5 °.

  The minimum thickness in the vertical direction of the wall 3, that is, the lower limit of the distance in the vertical direction from the top of the ceiling surface 6 to the internal space of the rod insertion portion 4 is preferably 15 mm, more preferably 20 mm, and even more preferably 25 mm. On the other hand, the upper limit of the minimum thickness of the wall 3 is preferably 80 mm, more preferably 60 mm, and even more preferably 50 mm. When the minimum thickness of the wall part 3 is less than the said minimum, there exists a possibility that the wall part 3 may fracture | rupture by the hit | damage of the rod R of the breaker B. FIG. On the contrary, when the minimum thickness of the wall part 3 exceeds the said upper limit, the said pile driving adapter 1 will unnecessarily enlarge and weight, and there exists a possibility that handling may become easy. As an example of the minimum thickness of such a wall part 3, it can be set to 35 mm.

<Rod insertion part>
The rod insertion part 4 is integrally formed on the upper side of the wall part 3. The rod insertion portion 4 has an inner wall surface substantially coaxial with the tube insertion portion 2 and an inclined surface portion 7 that is inclined so as to be reduced in diameter toward the lower side, and an inner wall surface substantially coaxial with the tube insertion portion 2. And the straight extension surface portion 8 having a substantially constant inner diameter.

  The outer diameter shape of the rod insertion portion 4 is preferably a columnar shape, but may be a prismatic shape. Moreover, arbitrary accessories, such as a handle | steering-wheel and an eyebolt, may be attached to the outer periphery. Such an appendage is understood not to be included in the various dimensions of the pile adapter 1 described herein.

  As a minimum of the average outside diameter of rod insertion part 4, 70 mm is preferred, 80 mm is more preferred, and 90 mm is still more preferred. On the other hand, the upper limit of the average outer diameter of the rod insertion part 4 is preferably 150 mm, more preferably 130 mm, and even more preferably 120 mm. When the average outer diameter of the rod insertion part 4 is less than the said minimum, the thickness of the straight extension surface part 8 becomes inadequate, and there exists a possibility that it may be damaged by the hit | damage of the breaker B. FIG. On the contrary, when the average outer diameter of the rod insertion part 4 exceeds the upper limit, the pile driving adapter 1 may be unnecessarily large and heavy, and handling may not be easy. As an example of the average outer diameter of such a rod insertion part 4, it can be set to 92 mm. “Average outer diameter” means the diameter of a perfect circle having the same cross-sectional area, that is, the equivalent circle diameter.

  The lower limit of the vertical length of the rod insertion portion 4 (maximum depth of the rod insertion hole) is preferably 80 mm, more preferably 100 mm, and even more preferably 120 mm. As an upper limit of the length of the rod insertion part 4, 200 mm is preferable, 180 mm is more preferable, and 160 mm is further more preferable. When the length of the rod insertion part 4 is less than the above lower limit, the rod R is easily pulled out, so that the operation of the arm A and the breaker B of the construction machine S may not be easy. On the contrary, when the length of the rod insertion part 4 exceeds the said upper limit, the said pile driving adapter 1 will unnecessarily enlarge and weight, and there exists a possibility that handling may become easy. As an example of the length of such a rod insertion part 4, it can be set to 130 mm.

(Inclined surface)
The inner wall surface of the inclined surface portion 7 may be a conical surface or a pyramid surface composed of a plurality of planes, and is continuous from a curved surface whose inclination angle with respect to the central axis gradually increases, for example, the straight extension surface portion 8. It may be a hemispherical surface. Among these, the shape of the inner wall surface of the inclined surface portion 7 is preferably a conical surface that is easy to process and is isotropic in aligning the rod R of the breaker B.

  The lower limit of the average inclination angle with respect to the central axis of the inclined surface portion 7 is preferably 20 °, more preferably 25 °, and further preferably 30 °. The upper limit of the average inclination angle with respect to the central axis of the inclined surface portion 7 is preferably 60 °, more preferably 50 °, and further preferably 40 °. When the average inclination angle with respect to the central axis of the inclined surface portion 7 is less than the lower limit, the inclined surface portion 7 becomes unnecessarily long, so that the pile driving adapter 1 is unnecessarily enlarged and weighted, and is easy to handle. There is a possibility that the tip of the rod R may be lost, or the tip of the rod R may bite into the inclined surface portion 7. On the contrary, when the average inclination angle with respect to the central axis of the inclined surface portion 7 exceeds the above upper limit, the alignment effect of the rod R may be insufficient. An example of the average inclination angle with respect to the central axis of the inclined surface portion 7 can be 38 °. The “average inclination angle” with respect to the central axis of the inclined surface portion 7 is obtained by measuring and averaging the average value of the angle between the inner surface of the inclined surface portion and the central axis in a cross section passing through the central axis in a plurality of different cross sections. Means the value obtained.

  The lower limit of the average inner diameter of the lower end of the inclined surface portion 7 may be 0 mm (that is, it does not have a horizontal plane as the upper surface of the wall portion 3), preferably 5 mm, and more preferably 8 mm. On the other hand, the upper limit of the average inner diameter at the lower end of the inclined surface portion 7 is preferably 25 mm, more preferably 20 mm, and even more preferably 15 mm. When the average inner diameter of the lower end of the inclined surface portion 7 is less than the above lower limit, when the rod R having a pyramidal tip is used, the tip of the rod R is caught between the inner walls of the inclined surface portion 7 (rod insertion hole). There is a fear. On the other hand, when the average inner diameter of the lower end of the inclined surface portion 7 exceeds the above upper limit, when the rod R having a pyramidal tip is used, the alignment of the rod R becomes insufficient, and the striking force of the breaker B becomes a single pipe pile P There is a risk of not being transmitted vertically. An example of the average inner diameter at the lower end of the inclined surface portion 7 can be 10 mm.

(Directly stretched surface)
The straight extension surface portion 8 is preferably formed in a cylindrical shape with an annular cross section, but may be formed in a rectangular tube shape.

  The lower limit of the average inner diameter of the straight extension surface portion 8, that is, the average opening diameter of the rod insertion hole, is preferably 50 mm, more preferably 60 mm, and even more preferably 65 mm. On the other hand, the upper limit of the average inner diameter of the straight extension surface portion 8 is preferably 100 mm, more preferably 90 mm, and further preferably 80 mm. When the average inner diameter of the straight extension surface portion 8 is less than the lower limit, there is a possibility that the large-diameter rod R cannot be inserted or the operation of the arm A of the construction machine S may not be easy. On the other hand, when the average inner diameter of the straight extension surface portion 8 exceeds the upper limit, the pile driving adapter 1 may move with respect to the rod R due to vibration when the breaker B is struck, and the single-pipe pile P may easily fall down. As an example of such an average inner diameter of the straight extension surface portion 8, it can be set to 72 mm.

  As a minimum of the average length of the up-and-down direction of straight extension surface part 8, 50 mm is preferred, 70 mm is more preferred, and 80 mm is still more preferred. As an upper limit of the average length in the vertical direction of the straight stretched surface portion 8, 150 mm is preferable, 120 mm is more preferable, and 100 mm is more preferable. When the average length in the vertical direction of the straight extension surface portion 8 is less than the lower limit, the rod R is easily pulled out, and the operation of the arm A and the breaker B of the construction machine S may not be easy. On the contrary, when the average length in the vertical direction of the straight extension surface portion 8 exceeds the above upper limit, the pile driving adapter 1 may be unnecessarily enlarged and weighted, and handling may not be easy. As an example of the average length in the vertical direction of such a straight stretched surface portion 8, it can be set to 90 mm.

<Heat dissipation groove>
The heat radiating grooves 5 are formed at substantially equal intervals on the entire outer peripheral surface of the rod insertion portion 4 and on the upper portion of the outer peripheral surface of the wall portion 3. The heat radiating groove 5 is formed to increase the surface area of the outer peripheral surface of the pile adapter 1 and dissipate heat generated by striking with the rod R of the breaker B to the atmosphere.

  The cross-sectional shape of the heat dissipation groove 5 may be any shape and can be a square shape that can be easily formed. The extending direction of the heat radiating groove 5 may be any direction, but is preferably a circumferential groove that is easy to form and also functions as a slip stopper.

  Although it does not specifically limit as a minimum of the average width of the groove | channel 5 for heat radiation, 0.5 mm is preferable, 1 mm is more preferable, and 2 mm is more preferable. On the other hand, the upper limit of the average width of the heat dissipation groove 5 is preferably 8 mm, more preferably 5 mm, and even more preferably 3 mm. When the average width of the heat radiating groove 5 is less than the lower limit, the flow of air inside the groove is deteriorated, and the heat radiating effect may be lowered. On the contrary, when the average width of the heat radiating groove 5 exceeds the above upper limit, the increase rate of the surface area is small, and there is a possibility that the heat radiating property of the pile driving adapter 1 cannot be sufficiently improved. An example of such an average width of the heat radiating grooves 5 may be 2 mm.

  Although it does not specifically limit as a minimum of the average space | interval of the groove | channel 5 for heat radiation, 1 mm is preferable, 1.5 mm is more preferable, and 2 mm is more preferable. On the other hand, the upper limit of the average interval of the heat dissipation grooves 5 is preferably 8 mm, more preferably 5 mm, and even more preferably 3 mm. If the average interval of the heat dissipation grooves 5 is less than the above lower limit, the protrusions left between the heat dissipation grooves 5 may become sharp and may easily hurt the hand. Conversely, the average interval of the heat dissipation grooves 5 When the above upper limit is exceeded, the increase rate of the surface area is small, and the heat dissipation of the pile adapter 1 may not be sufficiently improved. An example of the average interval between the heat radiating grooves 5 can be 3 mm.

  Although it does not specifically limit as a minimum of the average depth of the groove | channel 5 for heat radiation, 0.1 mm is preferable, 0.2 mm is more preferable, 0.3 mm is further more preferable. On the other hand, the upper limit of the average depth of the heat dissipation groove 5 is preferably 3 mm, more preferably 2 mm, and even more preferably 1 mm. When the average depth of the heat radiating groove 5 is less than the above lower limit, the increase rate of the surface area is small, and the heat radiating property of the pile driving adapter 1 may not be sufficiently improved. On the contrary, when the average depth of the heat radiating groove 5 exceeds the above upper limit, the effective thickness of the rod insertion portion 4 becomes small, and the pile driving adapter 1 may be easily damaged. As an example of such an average depth of the heat radiating groove 5, it can be set to 0.5 mm, for example.

<Pile driving>
FIG. 4 shows a case where a moire point rod is used as the rod R using the pile driving adapter 1. In this case, the rod R is guided by the inclined surface portion 7 and is aligned so that the tip abuts against the upper surface of the wall portion 3 as shown in the figure.

  As shown in FIG. 4, the pile driving adapter 1 may be attached to the single pipe pile P so as to be inclined, and the rod R may be inserted obliquely with respect to the pile driving adapter 1. Even if the striking force of the breaker B is applied in such an engaged state, the ceiling surface 6 of the pile driving adapter 1 causes the striking force to act downward on the single pipe pile P.

  Moreover, the case where a flat rod is used as the rod R using the pile driving adapter 1 is shown in FIG. In this case, the rod R is aligned by the inclined surface portion 7, but as shown in the drawing, the striking force of the breaker B is applied to the inner wall surface of the inclined surface portion 7 with the tip in contact with the inclined surface portion 7. Tell. Even in this case, the pile driving adapter 1 can drive the single pipe pile P downward.

<Advantages>
Since the pile driving adapter 1 has the cylindrical rod insertion portion 4 into which the rod R of the breaker B for the construction machine S can be inserted, the single pipe pile P and the rod R can be engaged. For this reason, by using the pile driving adapter 1, it is possible to prevent the striking force of the breaker B from escaping to the side and causing the single pipe pile P to fall without the rod R being strictly vertical. Therefore, if the pile driving adapter 1 is used, the single pipe pile P can be driven into the ground easily and reliably.

  Further, since the pile driving adapter 1 can be used by engaging the rod R of the breaker B loosely as described above, the diameter and the tip shape of the rod R can be selected.

  In addition, by using the pile driving adapter 1, the single pipe pile P can be driven using the breaker B for the construction machine S, so that it can be applied to an asphalt road surface or a bedrock such as a granite or a gravel layer. The single pipe pile P can be driven without opening a pilot hole.

  Further, unlike the conventional hammering, the single pipe pile P can be finely adjusted easily and accurately by operating the arm A of the construction machine S.

  Moreover, since the said rod insertion adapter 1 has the inclined surface part 7 which the rod insertion part 4 inclined so that the lower part of an inner wall surface may reduce in diameter, the rod R of arbitrary shapes is used for the rod insertion part 4 with the striking force. It can be positioned on the axis. Thereby, the single pipe pile P can be driven stably into the ground.

  Moreover, since the lower surface of the wall part 3, ie, the ceiling surface 6 of the insertion hole for single pipes, is concaved in the shape of an umbrella, the hitting force by the breaker B slightly applies the pile driving adapter 1 to the upper end part of the single pipe pile P. Acts to push inward. For this reason, even if it does not attach the cap for protection to the upper end of the single pipe pile P, the upper end of the single pipe pile P does not spread and it cannot be reused.

[Other Embodiments]
The said embodiment does not limit the structure of this invention. Therefore, in the above-described embodiment, components of each part of the above-described embodiment can be omitted, replaced, or added based on the description and common general knowledge of the present specification, and they are all interpreted as belonging to the scope of the present invention. Should.

  The pile driving adapter may not have a heat dissipation groove.

  Moreover, in the pile driving adapter, the rod insertion portion does not have a straight extension surface portion, and the inner wall surface may have a reduced diameter as a whole. In this case, it is preferable that the inclination angle of the upper portion with respect to the axis is small.

  Further, in the pile driving adapter, the rod insertion portion may not be provided with the inclined surface portion in which the inner wall surface is inclined, but may be composed only of the straight extension surface portion.

  The pile driving adapter of the present invention is not limited to the size of the above embodiment, and when used to drive a single pipe pile having a larger diameter, the pile driving adapter may be enlarged according to the diameter of the single pipe pile. In this case, an eyebolt or the like may be provided on the outer peripheral surface of the pile driving adapter so that the pile driving adapter can be arranged on the upper end of the single pipe pile by a construction machine or the like.

  The pile driving adapter according to the present invention can be widely used for driving a single pipe pile into the ground at a construction site or the like.

DESCRIPTION OF SYMBOLS 1 Piling adapter 2 Pipe insertion part 3 Wall part 4 Rod insertion part 5 Radiation groove 6 Ceiling surface 7 Inclined surface part 8 Direct extension surface part A Arm B Breaker P Single pipe pile R Rod S Construction machine

Claims (5)

A pile driving adapter that can be attached to the upper end of a single pipe pile driven into the ground,
A tube insertion part that is formed in a cylindrical shape and into which the upper end of a single pipe pile can be inserted,
A wall portion that closes the upper end of the tube insertion portion;
A pile driving adapter comprising: a rod insertion part formed on the upper part of the wall part in a cylindrical shape substantially coaxial with the pipe insertion part and capable of inserting a rod of a breaker for a construction machine inside.   The pile driving adapter according to claim 1, wherein a lower portion of the inner wall surface of the rod insertion portion is inclined so as to be reduced in diameter.   The pile driving adapter according to claim 1 or 2, wherein a length in the vertical direction of the rod insertion portion is 80 mm or more.   The pile driving adapter according to claim 1, wherein the vertical thickness of the wall portion is 15 mm or more.   The pile driving adapter according to any one of claims 1 to 4, wherein a heat dissipation groove is formed on an outer peripheral surface of the rod insertion portion.

Images