A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a technique performing of simultaneously excavating an excavation surface in an excavation direction and a hole wall direction, in the excavation direction and a pile core direction, or in all the directions. The invention is a multidirectional auger bit 1 mounted on an auger head, and includes a base portion 2 having a distal end that protrudes in an axial direction of the auger head, and leg portions 3 and 4 that is continuous with the base portion. The base portion includes a flat portion 2a that is continuous with the leg portion, first inclined portions 2b to 2d that are inclined from the flat portion toward a distal end side in the axial direction of the auger head, left and right side surface portions 2e and 2f that are continuous from the first inclined portion, and a second inclined portion 2g that is inclined from the first inclined portion toward a leg portion side in the axial direction of the auger head. A first cemented carbide tip is disposed at the first inclined portion, the side surface portions, and the second inclined portion. A second cemented carbide tip is disposed to protrude in a direction perpendicular to the left and right side surface portions from one of the left and right side surface portions to the first inclined portion.
The invention provides a technique performing of simultaneously excavating an excavation surface in an excavation direction and a hole wall direction, in the excavation direction and a pile core direction, or in all the directions. The invention is a multidirectional auger bit 1 mounted on an auger head, and includes a base portion 2 having a distal end that protrudes in an axial direction of the auger head, and leg portions 3 and 4 that is continuous with the base portion. The base portion includes a flat portion 2a that is continuous with the leg portion, first inclined portions 2b to 2d that are inclined from the flat portion toward a distal end side in the axial direction of the auger head, left and right side surface portions 2e and 2f that are continuous from the first inclined portion, and a second inclined portion 2g that is inclined from the first inclined portion toward a leg portion side in the axial direction of the auger head. A first cemented carbide tip is disposed at the first inclined portion, the side surface portions, and the second inclined portion. A second cemented carbide tip is disposed to protrude in a direction perpendicular to the left and right side surface portions from one of the left and right side surface portions to the first inclined portion.
MULTIDIRECTIONAL AUGER BIT
MULTIDIREKTIONALER SCHNECKENBOHRER
MÈCHE DE TARIÈRE MULTIDIRECTIONNELLE
ISHIZUKA TAKEMI (author)
2024-11-20
Patent
Electronic Resource
English