Abstract:
An auger boring machine includes a common power source for powering a drive motor which rotates an auger and a drive assembly which drives a pilot tube to form a pilot hole in the earth which is followed by the auger. The drive assembly is movable into and out of the operational position of the auger to allow the auger to be mounted on the drive motor. Preferably the drive assembly is removably mounted on the frame of the auger boring machine. An electric generator and hydraulic pump are powered by the common power source for operating various components of the drive assembly.
Abstract:
The invention includes a pair of swivels for use with an auger boring machine. One of the swivels allows for rotation of a first auger of a first auger assembly connected to the trailing end of a pilot tube without rotating the pilot tube. The other swivel allows for rotation of a larger diameter second auger connected to the trailing end of the first auger assembly without rotating the first auger. Each of the swivels includes a thrust bearing.
Abstract:
A pilot tube for an auger boring machine has a lubrication through passage formed therein through which water or another lubricant may be pumped during the driving of the pilot tube to facilitate formation of a pilot hole in the earth which is subsequently followed by an auger in forming a trenchless hole for laying underground pipe. Preferably, the lubrication passage extends to exit openings adjacent or on a steering head. A lubrication feed swivel is connected the trailing end of the pilot tube for feeding the water into the pilot tube while allowing rotation of the pilot tube for the steering thereof during the process of driving the pilot tube.
Abstract:
A brace or gusset is added to the first and last flight blade of an auger length for stability and reinforcement. The braces are generally box shaped with the flight blade as the box bottom. The brace walls are welded together along with a top panel. The brace is adjacent the auger shaft on one end and complementary shaped on one side to conform to the shape of the flight helix. A deflector is added to the last flight blade to distribute dirt and debris away from the first flight blade on the subsequent auger length. The auger length is reinforced against the twisting torque and compressive forces that occur at the first and last flight blade.
Abstract:
The invention includes a pair of swivels for use with an auger boring machine. One of the swivels allows for rotation of a first auger of a first auger assembly connected to the trailing end of a pilot tube without rotating the pilot tube. The other swivel allows for rotation of a larger diameter second auger connected to the trailing end of the first auger assembly without rotating the first auger. Each of the swivels includes a thrust bearing.
Abstract:
An auger drill directional control system includes a positional transmitter mounted on a drillhead at the front of a pipe, the positional transmitter transmitting directional and pitch signals to a positional receiver disposed above the grade at the desired terminal location of the drillhead; the positional receiver transfers the signal information to the positional processor that detects deviations by the drillhead from the desired course of travel and produces a correction signal to compensate for the deviation; the correction signal is transmitted by a control transmitter and is received by a control receiver disposed on the underground boring machine; the control receiver passes the correction signal to the control processor which converts the correction signal into a correction command that is delivered to an adjustment apparatus operatively connected with the drillhead. The control system thus provides a closed loop control system that controls the drillhead in the vertical and horizontal directions with respect to the pipe and that employs a receiver that can be placed on the ground above grade and can be moved from position to position to allow the drillhead to be directed around obstacles.
Abstract:
A ground engaging stake used to anchor and support equipment with respect to the soil includes an I-beam and a spring assembly which engages the I-beam. The I-beam includes a web plate and a pair of end plates which extend perpendicularly to the web plate at opposite edges thereof. A pair of guide plates are spaced from and parallel to a middle portion of the web plate. A pair of cams are mounted on each side of the web plate adjacent a bottom end thereof. The spring assembly includes a pair of spaced parallel springs rigidly attached to one another at a top thereof by a center stop. A pair of side stop blocks are attached to the top outer surface of each spring. Springs 32 extend between a slot formed between the guide plates and web plate of the I-beam. The spring is driven downwardly causing the springs to deflect against an angled top surface of each cam and bend slightly outwardly away from the I-beam. The lateral projection of each spring creates a resistance against the soil to retain the ground stake in a stationary position with respect to the soil.
Abstract:
An auger boring machine provides a continuous stroke drive assembly for driving a pilot tube to form an underground pilot hole used for guiding an auger in boring an underground pipe installation hole. The drive assembly preferably drives the pilot tube a distance at least the length of one of the pilot tube segments making up the pilot tube to substantially expedite the process. One embodiment includes a hydraulic piston-cylinder combination with a cylinder at least the length of the pilot tube segment. Alternately, a rack and a pinion drive mechanism may be used with a rack at least the length of the pilot tube segment or even more than twice that length to allow for a pair of pilot tube segments to be added simultaneously to the pilot tube. A lubricant feed system allows water to be pumped through passages formed in the pilot tube and steering head.
Abstract:
The invention includes a pair of swivels for use with an auger boring machine. One of the swivels allows for rotation of a first auger of a first auger assembly connected to the trailing end of a pilot tube without rotating the pilot tube. The other swivel allows for rotation of a larger diameter second auger connected to the trailing end of the first auger assembly without rotating the first auger. Each of the swivels includes a thrust bearing.
Abstract:
A pilot tube for an auger boring machine has a lubrication through passage formed therein through which water or another lubricant may be pumped during the driving of the pilot tube to facilitate formation of a pilot hole in the earth which is subsequently followed by an auger in forming a trenchless hole for laying underground pipe. Preferably, the lubrication passage extends to exit openings adjacent or on a steering head. A lubrication feed swivel is connected the trailing end of the pilot tube for feeding the water into the pilot tube while allowing rotation of the pilot tube for the steering thereof during the process of driving the pilot tube.