Drilling tool for producing geotechnical bores

Abstract

A drilling tool, consisting of an hydraulic excavator 2 and a drilling unit 7 , is used for producing geotechnical bore holes. The drilling unit 7 is connected to the boom 5 of the hydraulic excavator 2 by way of a tilt head 15 with three degrees of freedom or three axes of rotation 16, 17, 18 , which allow for it to be easily moved into the most varied working positions, especially in such a way as to permit drilling action that is considerably above the standing surface of the hydraulic excavator 2.

1 . Drilling tool for producing geotechnical bore holes with a drilling mast or a drilling unit ( 7 ), and the latter is allocated to the boom ( 5 ) of an hydraulic excavator ( 2 ), and the hydraulic excavator which is comprised of a revolving superstructure ( 4 ) that is able to rotate in relation to an undercarriage ( 3 ) and whose boom ( 5 ) is connected to the revolving superstructure ( 4 ) with the ability to swivel and to be actuated via boom cylinders ( 6 ) is characterized by the fact that a tilt head ( 15 ), which effects the connection to the boom ( 5 ), is allocated to the drilling unit ( 7 ) and which is realized as a device of the drilling unit ( 7 ) that can specify several axes of rotation ( 16 ,  17 ,  18 ) that are perpendicular in relation to one another vis-a-vis the boom ( 5 ).  
     
     
         2 . Drilling tool as claimed in  claim 1  characterized by the fact that the tilt head ( 15 ) is realized in such a way as to specify three axes of rotation ( 16 ,  17 ,  18 ); and the first axis of rotation ( 16 ) is realized to allow for a swiveling of the drilling unit ( 7 ), the second ( 17 ) for a vertical rotation and the third axis of rotation ( 18 ) is realized to allow for a rotating motion around the transverse axis ( 19 ) of the drilling unit ( 7 ).  
     
     
         3 . Drilling tool as claimed in one of the previous claims characterized by the fact that the drilling tool ( 1 ) with hydraulic excavator is realized in such a way as to exhibit additional degrees of freedom in addition to the three axes of rotation ( 16 ,  17 ,  18 ) or kinematic degrees of freedom (FG 4 , FG 5 , FG 6 ), in particular in the travel direction (FG 1 ), between the undercarriage ( 3 ) and revolving superstructure ( 4 ) through an axis of rotation with the degree of freedom (FG 2 ), through the connection with the degree of freedom (FG 3 ) of the boom ( 5 ) and the boom cylinder ( 6 ), through the boom shifting cylinder ( 23 ) in the longitudinal direction and the drilling drive unit ( 24 ) in the longitudinal direction of the drilling unit ( 7 ) in the form of translatory degrees of freedom (FG 7  and FG 8 ).  
     
     
         4 . Drilling tool as claimed in one of the previous claims characterized by the fact that the tilt head ( 15 ) is realized in two parts, and wherein one head part ( 26 ) is connected to the boom ( 5 ) by way of the first axis of rotation ( 16 ) and with the second head part ( 27 ) by way of the second axis of rotation ( 17 ), while the second head part ( 27 ) serves as axis of rotation ( 18 ) and holds the boom carrier ( 11 ), which is arranged with the ability to swivel around it.  
     
     
         5 . Drilling tool as claimed in one of the previous claims characterized by the fact that the head part ( 26 ) is connected to the boom ( 5 ) with the ability to swivel around the axis of rotation ( 16 ) and connected to a cylinder ( 29 ) by way of a swiveling lever ( 28 ), which protrudes in relation to the axis of rotation ( 16 ).  
     
     
         6 . Drilling tool as claimed in one of the previous claims characterized by the fact that the two head parts ( 26 ,  27 ) are connected to each other by way of the second axis of rotation ( 17 ) and by way of a swiveling cylinder ( 31 ) that makes the swiveling action possible.  
     
     
         7 . Drilling tool as claimed in one of the previous claims characterized by the fact that the swiveling cylinder ( 31 ) is connected to the head part ( 26 ) and to the second head part ( 27 ) via a cylinder suspension ( 32 ) or an adjusting lever ( 33 ).  
     
     
         8 . Drilling tool as claimed in one of the previous claims characterized by the fact that the boom carrier ( 11 ) is arranged orthogonally and with the ability to rotate in relation to the degree of freedom (FG 5 ) around the tilt head or the head part ( 27 ).  
     
     
         9 . Drilling tool as claimed in one of the previous claims characterized by the fact that the boom carrier ( 11 ) has a link mechanism ( 35 ) allocated to it, which generates the rotational motion, consisting of two hydraulic cylinders ( 36 ,  37 ), articulating levers ( 38 ) and coupling links ( 39 ), and wherein the lower hinge points ( 40 ,  41 ) are connected to the head part ( 27 ).  
     
     
         10 . Drilling tool as claimed in one of the previous claims characterized by the fact that the drilling unit ( 7 ) is positioned in the boom carrier ( 11 ) in a longitudinally displaceable manner and that it can be displaced via the boom shifting cylinder ( 23 ).  
     
     
         11 . Drilling tool as claimed in one of the previous claims characterized by the fact that, between the first head part ( 26 ) and the boom ( 5 ), the axis of rotation ( 16 ) is realized in such a way as to permit a pivoting angle ( 44 ) of 52°, respectively, in relation to the vertical zero position.  
     
     
         12 . Drilling tool as claimed in one of the previous claims, characterized by the fact that the axis of rotation ( 17 ) is realized in such a way as to permit a pivoting angle ( 45 ) of 100° between the two head parts ( 26 ,  27 ), and wherein said angle is composed of a sector pivoting angle ( 46 ) of 90° to the one and ( 46 ′) of at least 10° to the opposite side.  
     
     
         13 . Drilling tool as claimed in one of the previous claims characterized by the fact that the axis of rotation ( 18 ), around which the boom carrier ( 11 ) is arranged and realized with the ability to rotate, can achieve a total pivoting angle ( 47 ) of 180° and more.  
     
     
         14 . Drilling tool as claimed in one of the previous claims characterized by the fact that the boom carrier ( 11 ) is realized in such a way that it has the ability swivel by way of the link mechanism ( 35 ), utilizing the total pivoting angle ( 47 ), which is divided into two equal partial pivoting angles.