Drilling machine with changeable drive unit

Details Drilling machine with changeable drive unit Drilling machine with changeable drive unit

1998-09-01

2001-07-24

Bagnell, David (Department: 3673)

Boring or penetrating the earth

With above-ground means to feed tool

C175S087000, C175S122000, C175S220000, C173S029000

Reexamination Certificate

active

06263985

ABSTRACT:

CROSS-REFERENCES TO RELATED APPLICATIONS
Not applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a drilling machine according to the preamble of claim
1
.
Known drilling machines of this type are designed for working with drills or drill pipes having a given diameter and are used successfully in large numbers in order to produce pile foundations for buildings.
2. Discussion of Relevant Art Including
Information Disclosed under 37 CFR 1.97-1.99.
For new buildings in already built-up areas of a locality, it has already been proposed (DE 195 12 109 A1) to construct the drive carriages on the drill or drill pipe so that they are particularly radially compact in the vicinity of their free end, so that a drill hole can be formed in the immediate vicinity of an existing building wall.
It would also be possible to make do with piles having reduced diameters in the immediate vicinity of already existing buildings for some applications in which it is unnecessary to provide a foundation which can be subjected to high loading. However, corresponding drilling machines have not been available to date. It would also be conceivable to generally design drilling machines for operation with drills and drill pipes having smaller diameters. However, only partial use would be made of drilling machines of this type, since a large proportion of foundation work which is to be carried out requires the piles having the larger diameters as used to date.
SUMMARY OF THE INVENTION
By way of the present invention, a drilling machine according to the preamble of claim
1
is therefore to be further developed in such a manner that it can be used equally with drills and/or drill pipes of different diameters.
This object is attained by way of a drilling machine having the features disclosed in claim
1
.
Advantageous further developments of the invention are to be found in the subclaims.
In a drilling machine according to claim
2
, the adaptation to the respective desired diameter of drill and/or drill pipe is effected in that a drive unit operating on the drill or drill pipe is replaced on the drive carriage. In this manner, it is not only the actual drive element which is changed, but also the drive, which consists of motor and reduction gearing. In this manner, the adjustment of the desired drill or drill pipe diameter is attained with a corresponding adaptation of the drive itself.
The further development of the invention according to claim
3
is advantageous in view of a simple and nevertheless precise fitting of the drive unit on the carriage body.
With the further development of the invention according to claim
4
, it is attained that further auxiliary elements arranged on the drilling machine, such as tackle for moving loads, can be equally used irrespective of the current drill or drill pipe diameter setting of the drilling machine.
In a drilling machine according to claim
5
, there is no need to fit any heavy parts in order to change from operating with a drill or drill pipe having a first diameter to operating with a drill or drill pipe having a second diameter. It is merely necessary to replace the drive element operating on the drill or drill pipe by another drill element.
Claim
6
discloses a particularly simple bearing for replaceable drive elements of this type.
In a drilling machine according to claim
7
, it is automatically ensured that the cylindrical surface of the drill or drill pipe lying furthest from the fault finder remains essentially the same in the case of drill or drill pipes of different diameters. This makes it possible to produce drill holes for rows of piles of different diameters in front of an existing building wall by substantially identical movements of a chassis carrying the drilling machine. If the foundation work is carried out using numerical control of the chassis carrying the drilling machine, then it is unnecessary to fully reprogram the control when the drill or drill pipe diameter is changed; small changes to the program suffice.
In a drilling machine according to claim
8
, a single movement allows for the adaptation of the bearing arrangement to the respective diameter of the drill or drill pipe and the engagement of a pinion of the drive unit with a drive toothed rim of the drive element operating on the drill or drill pipe.
The further development of the invention according to claim
9
is advantageous in view of good load uptake of the bearing arrangement.
In a drilling machine according to claim
10
, a guide element adjacent the soil surface for drills or drill pipes can be easily adapted in its operating diameter.


REFERENCES:
patent: 3730285 (1973-05-01), Anderson et al.
patent: 3944300 (1976-03-01), Learmont et al.
patent: 3977480 (1976-08-01), Hilding
patent: 4096608 (1978-06-01), Lagerstedt
patent: 4190119 (1980-02-01), Loftis et al.
patent: 4309922 (1982-01-01), Beckley et al.
patent: 4570706 (1986-02-01), Pugnet
patent: 5036927 (1991-08-01), Willis
patent: 5058688 (1991-10-01), Scott et al.
patent: 5251709 (1993-10-01), Richardson
patent: 5348430 (1994-09-01), Metz et al.
patent: 5388653 (1995-02-01), England
patent: 5775704 (1998-07-01), Wilson et al.
patent: 19512109-A1 (1996-10-01), None

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