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Drilling tool and method for producing a bore in the ground

A drilling tool and ground technology, applied to drilling equipment and methods, drilling with mechanical conveying devices, drill bits, etc., can solve problems such as looseness and instability

Active Publication Date: 2019-07-19
BAUER MASCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Air flowing upwards may loosen the ground material from the walls of the hole and destabilize it

Method used

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  • Drilling tool and method for producing a bore in the ground
  • Drilling tool and method for producing a bore in the ground
  • Drilling tool and method for producing a bore in the ground

Examples

Experimental program
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Embodiment Construction

[0033] Combine below figure 1 with figure 2 The rotary drilling tool 10 according to the present invention for creating holes in the ground is explained. The rotary drilling tool 10 has a base body 12 with a removal device 20 on the bottom side of the base body 12. The cylindrical base 12 has a tubular design with a central core receiving portion 14. The removal device 20 has an annular design with several disc-shaped hammers 22. The hammer 22 is designed as a so-called pneumatic hammer, which moves axially back and forth by a feed of pressurized air, whereby the impact impulse is applied to the in-situ ground in order to remove hard ground materials.

[0034] On the upper side of the base body 12, the rotary drilling tool 10 has a central drill rod 40 with an upper connecting device 42 designed as a so-called kelly box. This is used to attach additional drill rod elements to transmit torque from a drilling device not shown to the rotary drilling tool 10.

[0035] Via the suppl...

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PUM

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Abstract

The invention relates to a drilling tool and a method for producing a bore in the ground, in which method ground material is carried away by a removal device on the underside of a main body of the drilling tool, flushing air is supplied by a feeding device into the bore, which is filled with drilling fluid, in the area of the removal device and ground material carried away by means of the flushingair is transported away through a discharge line. According to the invention, the ground material is transported to a receiving area in an upper section of the main body. A collecting hood is provided above the receiving area, which closes off the receiving area at the top, forming an air collecting space in which air collects. An outlet valve by means of which air is discharged from the air collecting space is arranged on the collecting hood.

Description

Technical field [0001] The present invention relates to a rotary drilling tool for creating holes in the ground according to the preamble of claim 1, said rotary drilling tool with a base body, arranged on the bottom side of the base body for removing ground material A removal device, a supply device for supplying flushing air to the area of ​​the removal device, and a discharge line for discharging the removed floor material and drilling suspended matter, the removed floor material and the drilling suspension The objects can be transported into the receiving area by means of flushing air. [0002] The invention also relates to a method for producing holes with a rotary drilling tool according to the preamble of claim 11, wherein the ground material is removed by means of a removal device on the bottom side of the base of the rotary drilling tool, by With the supply device, the flushing air being supplied means that the holes filled with the drilling suspension enter the area of ...

Claims

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Application Information

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IPC IPC(8): E21B21/16E21B3/00E21B7/00E21B21/00
CPCE21B21/16E21B7/003E21B21/011E21B6/04E21B10/06E21B10/485E21B21/015
Inventor S.鲍尔
Owner BAUER MASCH GMBH