Abstract:
In a method of operating a ram boring machine having a rotatory-thrust drill rod an impact force is applied to the rear end of the drill rod. The boring machine includes a thrust unit and a striking tool that are combined to form a thrust/percussion aggregate.
Abstract:
A ram-boring machine with forward and reverse motion control which comprises a percussion piston that can be axially displaced in a tubular housing, a control tube that is arranged in the housing and controls the forward and reverse motion of the percussion piston by passing over radial control openings in the percussion piston, control edges on the control tube which are guided in the percussion piston in sealed fashion, a compressed air bore that runs into the front end of the control tube, a compressed air bore or compressed air line that runs into an annular chamber between a first control edge and a second control edge, an outlet bore or outlet line that originates in the region between the second control edge and a third control edge and leads to the rear end of the control tube, and control means for selectively charging the compressed air bore or compressed air line or ventilating the outlet bore or outlet line.
Abstract:
In a method for directional drilling with the aid of a drilling device having a drill pipe and a mining tool which moves on an orbit, the tool moves at an essentially constant angular velocity during straight drilling and the angular velocity is periodically changed during curved drilling, in order to thus create a smooth transition from straight drilling to curved drilling and to achieve more precise curve control.
Abstract:
The invention relates to a device for locating percussion boring machines using a transmitter and a receiver which allows the radio transmitter to be connected to the percussion boring machine in a simple manner and preferably without breaking the connection between the compressed air line and the percussion boring machine; which does not hinder the manoeuvrability of the hammer drill; which is less susceptible to mechanical influences during the boring; and which can easily be disassembled. This is achieved by fastening a housing with a receptacle for the transmitter or the receiver on a fluid line.
Abstract:
The invention pertains to a machine for producing or widening ground bores and/or for shattering old pipelines and laying new pipelines, consisting of a push-pull unit and a rod assembly that is connected to and driven by the push-pull unit and extends through the ground bore or the pipeline, with projections and/or recesses being arranged on the rod assembly, and with positive coupling means that engage on the projections or in the recesses arranged on the push-pull unit.
Abstract:
A boring-rod magazine which can be moved into the drilling axis of a boring machine. The boring-rod magazine may contain a plurality of boring rods, and holds a boring rod to position it in the drilling axis, and then releases the boring rod when boring-rod magazine is removed. The boring-rod magazine may include a carousel closed by a cover with a transfer opening for the boring rods. The magazine may include compartments for the boring rods, and spring mechanisms for holding and releasing the rods. The magazine may be rotated by a drive and kept in position by a rotary stop.
Abstract:
A device for connecting a pipeline conduit to a ground-boring machine or for replacing old pipes and inserting the end of an individual pipe into a sleeve joint of the preceding pipeline conduit, comprising a tensioning frame that can be attached to the end of the pipeline conduit or the individual pipe to be connected thereto, a tensioning drive on the tensioning frame, and a cable or chain that is coupled to the machine as well as the tensioning drive.
Abstract:
The invention relates to a mixing system for the preparation of a drilling fluid for horizontal drilling methods, having a high-pressure pump and a feed line for the additive medium arranged upstream of the high-pressure pump in the direction of flow.
Abstract:
The invention relates to an automatically driven pile-driver drilling device for drilling into the earth with a percussion piston moving axially inside a casing, driven by a pressure medium and changeable from a forward stroke to a backstroke, with a working space having radial control openings, a guide pipe with radial control openings extending into the working space and forming a rigid part of the housing, and a control box guided into an annular chamber of the guide tube and axially adjustable in a spring-pneumatic manner.
Abstract:
Ramming drill for destructive replacement of buried pipelines with a conical tip, a crushing head set onto the conical tip with radial cutters and a traction cable acting on the equipment tip.