JP3018531U - Single pipe driving metal fitting - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a single pipe driving metal fitting that protects the upper end of a durable single pipe that is not easily deformed or damaged during pile driving. [Structure] A projection 13 to be fitted into a single pipe 22 is vertically projected from one surface of a base plate 11 having a flat circular cross section to form a single pipe driving metal fitting 16. The base 11 and the protrusions 13 are integrally formed by cutting a steel material.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a single pipe driving metal fitting for protecting the upper end of a single pipe driven into the ground.

[0002]

[Prior art]

 At the construction site, a long single pipe was added by a clamp to a short single pipe driven into the ground to create a building, and a cloth single pipe was attached to the building by a clamp, and a corrugated sheet was attached to the cloth single pipe. Is provided.

In this case, the head of the single pipe used as a pile is covered with a cap so as not to be deformed by being hammered, and the single pipe extracted after use is reused.

[0004]

[Problems to be solved by the device]

 As the cap 34 for protecting the upper end of the single pipe used for such pile driving, a steel plate press-molded and processed into a crown shape is commercially available (FIGS. 9 and 10). As described above, since the commercially available cap 34 is press-molded, a relatively thin steel material that can be press-molded is used for the steel material of the cap 34.

However, a commercially available cap 34 made of such a thin steel material is such that when it is driven by covering it on the upper end of the single tube 22, the upper surface of the cap 34 is pushed into the internal cavity 23 of the single tube 22. It is easily deformed, and cracks are easily generated on the peripheral surface 35 of the cap 34. As such, commercially available caps 34 are not durable enough to be used repeatedly and are often disposable.

[0006] Therefore, a single pipe fixing which is made by vertically standing and welding a cylinder 37 on a base 36, and used when vertically inserting the cylinder 37 by inserting it into a single pipe that constitutes a pillar such as a scaffolding at a construction site. It was conceivable to substitute the base 38 for the top protection cap 34 of a single pipe to be piled. When the single pipe fixing base 38 is replaced with a single pipe upper end protection cap 34 for pile driving, the base 36 and the cylinder 37 of the single pipe fixing base 38 are made of thick steel material, and therefore, compared with the cap 34. It is difficult for the base 36 and the cylinder 37 to be deformed when driving a stake.

However, the single pipe fixing base 38 is only for vertically supporting the support pillar such as a scaffold, and is not used by hitting with a hammer, etc., and the end of the cylinder 37 is applied to the base 36 to overlay it. Since it is only welded, it is vulnerable to impact. For this reason, if the cap 34 used by hitting it is used as a substitute, the welded portion 39 is cracked at the time of driving the pile, and the cylinder 37 is easily separated from the base 36, so that it has no durability.

[0008]

[The purpose of the device]

 Therefore, an object of the present invention is to provide a single-tube driving metal fitting that protects the upper end of a single-tube, which is durable and is not easily deformed or damaged when driving a pile.

[0009]

[Means for Solving the Problems]

 That is, in the single pipe driving metal fitting 16 according to the present invention, the projections 13 that fit into the single pipes 22 vertically project from one side of the hammer driving base 11 having a flat circular cross section. The board 11 and the projections 13 are characterized by being integrally formed by cutting a steel material. Here, "integrally formed by cutting steel material" does not mean that it is formed by joining several steel materials by welding or other methods, but the entire single pipe driving metal fitting is one and the same steel material. Means being formed. Hereinafter, the present invention will be described with reference to illustrated embodiments.

[0010]

Embodiment 1 FIGS. 1 and 2 show an embodiment of a single pipe driving metal fitting 16 according to claim 1 of the scope of utility model registration. Reference numeral 11 is a hammering base having a circular cross section, and its bottom surface 12 is a flat plate. A cylindrical projection 13 projects vertically from the flat bottom surface 12, and the center 14 of the circular cross section of the hammer driving base 11 is on the axis 15 of the cylindrical projection 13. The outer diameter D of the hammer driving base 11 is larger than the outer diameter d of the protrusion 13 (D >> d).

The projection 13 is to be inserted into the cavity 23 of the single tube 22, and the outer diameter d thereof is designed according to the standard of the inner diameter a of the single tube 22. The outer diameter D of the hammering base 11 is such that the upper end of the single pipe 22 is covered with the hammering base 11 when the inner diameter a projection 13 of the single pipe 22 is inserted into the cavity 23 of the single pipe 22. It is designed to be larger than the outer diameter A of 22 (D >> A).

[0012]

Embodiment 2 FIGS. 3 and 4 show an embodiment of a single pipe driving metal fitting 16 according to claim 2 of the scope of utility model registration. Reference numeral 11 is a hammering base having a circular cross section, and its bottom surface 12 is a flat plate. A cylindrical projection 13 projects vertically from the flat bottom surface 12, and the center 14 of the circular cross section of the hammer driving base 11 is on the axis 15 of the cylindrical projection 13. The outer diameter D of the hammer driving base 11 is larger than the outer diameter d of the protrusion 13 (D >> d).

The cavity 20 of the protrusion 13 is for inserting the single tube 22 therein, and the inner diameter b thereof is set in accordance with the standard of the outer shape A of the single tube 22.

FIG. 5 shows a single pipe 22 which is prepared to be piled by covering the single pipe driving metal fitting 16. Numeral 24 is a handle for holding the single pipe 22 apart so that a mallet that is accidentally detached from the single pipe 22 when holding the pile will not hit and get injured. At the tip of the handle 24, a cylindrical single tube holding ring 25 into which the single tube 22 is fitted is welded. This handle 24 is pulled out from the single pipe 22 that has been driven into the ground 33 together with the single pipe driving metal fitting 16.

[0015]

[Embodiment 3] FIG. 6 illustrates an embodiment of a single pipe driving metal fitting 16 according to claim 4 of the scope of utility model registration. Reference numeral 11 is a hammering base having a circular cross section, and its bottom surface 12 is a flat plate. As in the case of Embodiment 2 above, a cylindrical protrusion 13 is vertically projected from the flat bottom surface 12 thereof, and the center 14 of the circular cross section of the hammer driving base 11 is a cylindrical protrusion 13. It is on the axis 15 and the outer diameter D of the hammer driving base 11 is larger than the outer diameter d of the protrusion 13 (D >> d).

The cavity 20 of the projection 13 is for inserting and protruding the shaft rod 21 into which the single pipe 22 is inserted, and the inner diameter b thereof is set according to the inner diameter a of the single pipe 22. The outer diameter of the rod 21 is set according to the inner diameter b of the cavity 20 and the inner diameter a of the single tube 22. The shaft core wire of the shaft rod 21 which is inserted into the cavity 20 and protrudes from the projection 13 coincides with the shaft core wire 15 of the projection 13.

The bottom surface 19 of the projection (cylindrical) 13 is attached to the shaft core wire 15 of the projection 13 so that the upper end of the single tube 22 comes into close contact with the bottom surface 19 of the projection 13 when the rod 21 is inserted into the single tube 22. It is perpendicular to it. Therefore, the bottom surface 19 of the protrusion (cylinder) 13 is aligned with the bottom surface 12 of the hammer driving base 11 in parallel. The outer diameter d of the protrusion (cylinder) 13 is larger than the outer diameter A of the single tube 22 (d >> A).

Instead of the handle 24 shown in FIG. 5, a handle 17 that supports the single pipe 22 during pile driving is rotatably attached to the protrusion 13 by a pin 18. A taper 26 may be attached to the tip of the shaft rod 21. A screw thread may be attached to the inner wall surface of the cavity 20 of the protrusion 13 and the peripheral surface of the shaft rod 21 so as to be removably fitted into the cavity 20 of the protrusion 13. The fitted shaft rod 21 can be connected to the protrusion 13 by a pin 18 that joins the handle 17 to the protrusion 13 by a pin.

FIG. 7 illustrates an application example of the single pipe driving metal fitting 16 of the above-described third embodiment. The shaft rod 21 is formed by cutting a steel material together with the hammer driving base 11 and the projection 13. It is formed integrally. FIG. 8 illustrates a temporary enclosure 27 at a construction site formed using a single tube 22. 28 is a building site, 29 and 30 are clamps, 31 is a cloth single pipe, 32 is a corrugated plate, and 33 is a ground.

[0020]

[Effect of device]

 In a single pipe driving metal fitting 16 according to the present invention, a hammer driving base 11 and a protrusion 13 are integrally formed by cutting a steel material. Therefore, there is no welded portion such as the single pipe fixing base 38 between the hammer driving base 11 and the protrusion 13, and the hammer driving base 11 is different from the conventional cap 34 made by press working. Since the thickness can be increased, the single pipe driving metal fitting 16 according to the present invention is less likely to be damaged during hammering.

The outer diameter D of the hammer driving base 11 is sufficiently larger than the outer diameter d of the protrusion 13. Therefore, even if the periphery of the hammer driving base 11 is deformed, the upper end of the single pipe 22 is protected by the single pipe driving tool 16 and is not deformed during pile driving, and can be reused repeatedly.

With the single pipe driving metal fitting 16 with the handle 17 attached, there is no danger of a mallet hitting the hand supporting the single pipe 22 during pile driving, and the pile driving work can be carried out safely.

The items in the section of the scope of claims for utility model registration in this specification are numbered corresponding to the numbers shown in the drawings, but the added numbers are the same as those in this specification. This is for facilitating understanding of the contents, and means that the added number means that the added items in the column of the appended claims for utility model registration are limited to those in the drawing. Not a thing.

[Brief description of drawings]

FIG. 1 is a perspective view of a single pipe driving metal fitting according to the present invention.

FIG. 2 is a cross-sectional view of the single pipe driving metal fitting shown in FIG.

FIG. 3 is a perspective view of a single pipe driving metal fitting according to the present invention.

FIG. 4 is a cross-sectional view of the single pipe driving metal fitting shown in FIG. 3 in a state of being covered with a single pipe.

5 is a perspective view of the single pipe driving metal fitting shown in FIG. 3 in a state in which the single pipe is covered with the single pipe.

FIG. 6 is a perspective view of a single pipe driving metal fitting according to the present invention.

FIG. 7 is a cross-sectional view of a single pipe driving metal fitting according to the present invention in a state of being covered with a single pipe.

FIG. 8 is a perspective view of a temporary enclosure at a construction site formed by using a single pipe as a pile.

FIG. 9 is a perspective view of a conventional single-tube driving metal fitting.

FIG. 10 is a cross-sectional view of a conventional single-tube driving metal fitting.

FIG. 11 is a perspective view of a single-tube fixing base that substitutes for the single-tube driving metal fitting.

FIG. 12 is a cross-sectional view of a single pipe fixing base that is used as a substitute for the single pipe driving metal fitting.

[Explanation of symbols]

 11 Base 12 Bottom 13 Protrusion 14 Center 15 Protrusion Shaft Core Wire 16 Single Pipe Driving Metal Fitting 17 Handle 18 Pin 19 Protrusion Bottom 20 Protrusion Cavity 21 Axle Rod 22 Single Pipe 23 Single Pipe Cavity 24 Handle 25 Single Pipe Retaining Ring 26 Taper 27 Temporary enclosure 28 Building site 29 Clamp 30 Clamp 31 Cloth single pipe 32 Corrugated plate 33 Ground 34 Cap 35 Circumferential surface 36 Base 37 Cylinder 38 Single pipe fixed base 39 Welding point A Single pipe outer diameter a Single pipe inner diameter b Projection Inner diameter of cavity d Outer diameter of protrusion D Outer diameter of substrate

Claims (4)

[Scope of utility model registration request] 1. A cylindrical projection (13) projects vertically from a flat bottom surface (12) of a hammering base (11) having a circular cross section, the center () of a circular cross section of the hammering base (11) ( 14)
Is on the axis (15) of the cylindrical protrusion (13),
The outer diameter D of the hammer driving base (11) is larger than the outer diameter d of the protrusion (13) (D >> d), and the hammer driving base (11) and the protrusion (1)
3) A single pipe driving metal fitting (16), characterized in that it is integrally formed by cutting a steel material. 2. A cylindrical projection (13) vertically projects from a flat bottom surface (12) of a hammering base (11) having a circular cross section, the center () of the circular cross section of the hammering base (11). 14)
Is on the axis (15) of the cylindrical protrusion (13),
The outer diameter D of the hammer driving base (11) is larger than the outer diameter d of the protrusion (13) (D >> d), and the hammer driving base (11) and the protrusion (1)
3) A single pipe driving metal fitting (16), characterized in that it is integrally formed by cutting a steel material. 3. A cylindrical projection (13) projects vertically from a flat bottom surface (12) of a hammering base (11) having a circular cross section, the center () of a circular cross section of the hammering base (11). 14)
Is on the axis (15) of the cylindrical protrusion (13),
The outer diameter D of the hammer driving base (11) is larger than the outer diameter d of the protrusion (13) (D >> d), and the handle (17) is rotatably attached to the protrusion (13) by the pin (18). A single pipe driving metal fitting (16) characterized in that the hammer driving base (11) and the projection (13) are integrally formed by cutting a steel material. 4. A cylindrical projection (13) vertically projects from a flat bottom surface (12) of a hammering base (11) having a circular cross section, and the bottom surface (19) of the projection (13) is hammered. Foundation (1
1) parallel to the bottom surface (12), and the center (14) of the circular cross section of the hammering base (11) has a cylindrical protrusion (1).
It is on the shaft core wire (15) of 3), and is a hammer driving base (11).
Has an outer diameter D larger than the outer diameter d of the protrusion (13) (D >>
d), the hammering base (11) and the protrusions (13) are integrally formed by cutting a steel material, and the cylindrical protrusions (1)
The shaft rod (21) is inserted into the cavity (20) of 3), and the shaft core wire of the shaft rod (21) is the shaft core wire (1) of the protrusion (13).
5) Matching single tube driving metal fittings (1)
6).