JP3210662U - Drain hole drilling equipment - Google Patents

Abstract

[PROBLEMS] It is possible to construct without vibration, noise and soil, and to excavate reliably even if there is a water-permeable layer of crushed stone and crushed stone. A drilling device for drainage holes that is highly maneuverable and safe even at high altitude work. SOLUTION: A driving device 13 using a handy type electric vibration drill or electric hammer drill, and a drilling shaft body 14 rotated by the driving device 13, the drilling shaft body having a diameter expanded by flattening a circular pipe into an elliptical cross section. The excavation head 18 has a portion 16, the tip of which is crushed into a flat plate and twisted, and the tip is sharpened. [Selection] Figure 1

Description

  The present invention relates to a simple excavator for regenerating or newly constructing a drain hole such as a drain pipe.

  At present, in Japan, there is a tendency for “very heavy rain” that causes precipitation to exceed 50 mm per hour in relation to climate change, and as a result, the number of landslide disasters also tends to increase. Such climate change is also observed in snowfall areas, and landslide disasters tend to increase during the snowmelt season.

  FIG. 5 shows the increase and concentration of surface water due to heavy rain, which leads to an increase in groundwater level and an increase in pore water pressure, which reduces the stability of embankment slopes and slopes.

  For this reason, it is stipulated that the drainage is to be maintained, but the embankment before the legislation may not have the drainage, or even if the drainage is in place, the function may be degraded. These are the causes of disasters.

  In addition, it has been pointed out that the retention of groundwater in the embankment for a long period of time causes deterioration of the embankment material and may promote a decrease in the stability of the embankment during an earthquake or heavy rain.

  In order to quickly discharge rain and snowmelt from the embankment and slope, measures have been taken to insert and place drainage materials and drainage pipes on slopes and slopes.

Patent Document 1 below relates to an apparatus for driving a drain pipe onto a roadbed slope of a railway. A rail is temporarily installed on the roadbed slope so that a carriage equipped with a vibrator can be transferred, and a drainage pipe is connected to the tip of the vibrator. .
Japanese Patent Laid-Open No. 5-17933

Patent Document 2 below shows a boring device 10 in which a main body 12 is movable via a crawler 11 that travels in an infinite band as shown in FIG.
JP 2007-327297 A

  As is also the case with Patent Document 1 and Patent Document 2, the apparatus is large-scale, for example, a rail is temporarily installed on the slope of the roadbed so that the carriage and the driving device can be transferred.

  In addition, when installing a drain pipe with multiple holes in the steel pipe and crushing the tip to make a flat part as a drainage material, the operator swings the hammer greatly and hits the tail or hangs on the temporary frame with a rope Although the method of operating the stick in the shape of a temple bell was taken, it is not easy to work.

  As shown in FIG. 4, the retaining wall 1 or the like may be provided with a permeable layer 2 of chestnut stone / crushed stone 3 on the back side, and when the existing drainage pipe 4 is clogged due to inflow of earth and sand, these chestnut stone / crushed stone 3 There is also a risk of excavation. A PVC pipe is often used for the drain pipe 4.

  The purpose of the present invention is to eliminate the inconvenience of the conventional example, and it can be constructed with no vibration, no noise and no soil, and it can be excavated reliably even with a water-permeable layer of crushed stone and crushed stone. Therefore, it is an object of the present invention to provide a drainage drilling device that is excellent in maneuverability and is safe even when working at a high place, without being oversized.

  In order to achieve the above-mentioned object, the present invention according to claim 1 comprises a driving device using a handy type electric vibration drill or electric hammer drill and a drilling shaft rotated by this driving device, and the drilling shaft comprises a circular pipe. The gist of the present invention is that the excavation head has a diameter-enlarged portion that is flattened into a cross-sectional ellipse, the tip is crushed into a flat plate shape, twisted, and the tip is sharpened.

  According to the first aspect of the present invention, the excavation head at the front end is formed by crushing a circular pipe into a flat plate shape and twisting it, so that a propulsive force can be obtained by the screw action of the screw portion at this portion, and It can be excavated at the pointed point.

  In addition, the drilling shaft has a diameter-enlarged part that is a circular pipe that is flattened into an elliptical cross section, so that this part can be rotated to perform diameter-extended drilling compared to the perfect circle part. Even so, excavation can proceed while pushing the stones away.

  Furthermore, the drive device is of a handy type using an electric vibration drill or an electric hammer drill, does not require an installation base or rails, is easy to operate, and has excellent mobility such as transportation. Charge-type cordless ones can also be used.

  The gist of the present invention described in claim 2 is that the excavation shaft body and the excavation head are formed by processing a single circular pipe and integrating them.

  According to the second aspect of the present invention, one circular pipe can be processed and manufactured. The diameter-expanded portion of the excavation shaft body is flattened into a cross-sectional ellipse, and the twisted portion is crushed into a flat plate shape. In addition, it is twisted, and the pointed tip is crushed into a flat plate shape and sharpened, and these are continuously integrated.

  The gist of the present invention described in claim 3 is that a hard portion formed by welding a metal is provided at a pointed portion.

  According to the third aspect of the present invention, the pointed portion can be formed as a cutting tip by providing a hard portion formed by welding a genus.

  As described above, the drainage drilling device of the present invention can be constructed without vibration, noise and soil, and can be reliably drilled even if there is a permeable layer of crushed stone or crushed stone. Therefore, the apparatus does not become large, has excellent mobility, and is safe even when working at high places.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view showing an embodiment of a drain hole excavation device according to the present invention. The drive device 13 is a handy type electric vibration drill or electric hammer drill, and an excavation shaft body 14 is rotated by the drive device 13. Become.

  The driving device 13 can be a commercially available corded AC power drill or a cordless drill using a rechargeable secondary battery (battery).

  The excavation shaft body 14 has a diameter-enlarged portion 16 obtained by flattening a circular pipe into an elliptical cross section as shown in FIG.

  The tip of the enlarged diameter portion 16 is a screw portion 17 in which a circular pipe is crushed into a flat plate shape and twisted, and the tip of the screw portion 17 is pointed like an arrow to form a triangular excavation head 18.

  The excavation head 18 was provided with a hard portion 19 that was welded and overlaid with metal. In the illustrated example, the hard portion 19 is formed in a cross shape.

  The excavation shaft body 14, the screw portion 17, and the excavation head 18 are manufactured by processing one circular pipe, and are integrated as a whole. The total length is about 1 m.

  In addition, although illustration is abbreviate | omitted, the chuck | zipper part to the drive device 13 is formed in the edge part of the excavation shaft body 14, or the coupling for a connection is fitted.

  Next, the usage method will be described. When the existing drainage pipe 4 shown in FIG. 4 is clogged due to inflow of earth and sand, etc., the device of the present invention can be used to regenerate it.

  The excavation shaft body 14 is attached to the drive device 13, the excavation shaft body 14 is inserted into the drainage pipe 4, and is rotated by the drive device 13.

  The drainage pipe 4 can be pushed forward while excluding earth and sand with the excavation head 18 at the tip, and further, the crushed stone and crushed stone 3 of the permeable layer 2 at the tip of the drainage pipe 4 can be digged up. In the figure, α indicates the excavation line.

  Further, after the excavation is completed, the drive device 13 can be reversed and the excavation shaft body 14 can be reversed for removal.

  If a drainage material is installed in the hole of the drainage pipe 4 excavated in this way, subsequent clogging can be prevented.

  FIG. 3 shows an example of a drainage material. A cylindrical drainage material 6 includes a drain pipe 7 covered with a nonwoven fabric filter 8 and a geotextile net 9, and the filter is covered during construction by a filter protection net by the geotextile net 9. Prevents damage.

  The drain pipe 7 is made of high-density polyethylene and has a net-like opening 7a (opening ratio: 7 to 15%) and a non-opening portion 7b. Is preferred.

  The nonwoven fabric filter 8 is a nonwoven fabric whose thickness is about 1 mm or 2 mm, for example, and is made of a thermoplastic resin (made of polyester, polypropylene, or the like).

  Geotextile Net 9 is a cell force that has a structure in which a strip of polypropylene core coated with ethylene / vinyl acetate copolymer resin is woven in a grid pattern and the intersections are integrated by heat fusion. Asahi Kasei Kogyo Co., Ltd. (registered trademark name) is suitable, and is excellent in tensile strength characteristics, creep characteristics, impact resistance, durability, friction characteristics with soil, and chemical resistance necessary as a reinforcing material.

  SELFORCE can build a highly safe earth structure, especially in impact resistance, even if the embankment material is rocky, even if the embankment material is rocky, the strength decrease due to damage during leveling and rolling is small (strength retention 94% or more). The creep reduction coefficient was large (0.65), and in the present invention, the nonwoven fabric filter 8 was covered and protected from the outside with such a geotextile net 9. The geotextile net 9 is fixed by clip fastening or adhesion.

  Since the drainage pipe made of synthetic resin constituting the drainage material is a perforated pipe material in which a large number of water-permeable holes are formed in the peripheral wall and the inside and outside communicate with each other, water can be taken in from here. And it is possible to block the earth and sand from flowing into the water permeable holes by the nonwoven fabric filter covering the water permeable holes.

  In addition, when the water permeable filter is arranged on the outer peripheral side, the water permeable filter may be in direct contact with soil, sand, etc., but it is protected by pressing it with a geotextile net, and the water permeable filter may be damaged. Can be effectively prevented.

  The cylindrical drainage material 6 is inserted into the existing drainage pipe 4 and installed so that the drainage material 6 comes out from the tip of the existing drainage pipe 4.

  The portion of the drainage material 6 that comes out from the tip of the existing drainage pipe 4 functions as a water collecting portion.

  Although the above embodiment demonstrated the case of the reproduction | regeneration when the existing drain pipe 4 is installed, the excavation apparatus of this invention installs a new drain pipe, for example, when there is no such existing drain pipe 4 It can also be applied to the construction of drainage holes.

It is a side view which shows one Embodiment of the excavation apparatus of the drain hole of this invention. It is explanatory drawing of a drilling shaft. It is explanatory drawing of a drainage material. It is a vertical side view of a retaining wall. It is explanatory drawing of the flow of water. It is a side view which shows a prior art example.

DESCRIPTION OF SYMBOLS 1 ... Retaining wall 2 ... Permeable layer 3 ... Chestnut / crushed stone 4 ... Drain pipe 6 ... Drainage material 7 ... Water distribution pipe 7a ... Reticulated opening 7b ... Non-opening part 8 ... Nonwoven filter 9 ... Geotextile net 10 ... Boring device 11 ... Crawler DESCRIPTION OF SYMBOLS 12 ... Main body 13 ... Drive apparatus 14 ... Excavation shaft 15 ... Circular part 16 ... Diameter expansion part 17 ... Screw part 18 ... Excavation head 19 ... Hard part

Claims (3)

  It consists of a drive device with a handy type electric vibration drill or electric hammer drill and a drill shaft that is rotated by this drive device. A drilling device for drainage holes, characterized in that a circular pipe is crushed into a flat plate shape and twisted, and a drilling head with a pointed tip is formed.   The excavation device for a drain hole according to claim 1, wherein the excavation shaft body and the excavation head are produced by processing one circular pipe and integrated. The drain hole excavation device according to claim 1 or 2, wherein a hard portion formed by welding metal is provided at the pointed portion.