Device for the production of earth holes
AssigneesElizabeth Hochstrasser nee Wack, Jurgen Hochstrasser
InventorsHans Mathieu, Jurgen Hochstrasser
Life of this patent
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Abstract
A device which includes a ram and a tube, which device can be used for the production of earth holes and poles which are located in these holes and which poles are made of poured or compressed concrete and a process using this device.
Claims17
A device for the production of earth holes and poles, which are located in these holes, which poles are made of poured or compressed concrete, said device comprising a ram equipped with an axial, cylindrical opening, an earth remover insertable in said opening for the concurrent removal of the earth by means of said earth remover;
- a tube, said ram further comprising a cylindrical extension which is inserted into said tube and serves to guide the ram during its ramming movements, which ram can be lifted and lowered by a crane, and which ram is brought into contact with the frontal plane of the tube characterized by the fact that the tube is connected in a disconnectable fashion with the ram by means of yielding devices, which determine the lifting height of the ram, a ring-shaped shoulder formed on the ram and having a groove for the reception of a noise-muffling buffer and for the reception of the frontal plane of the tube;
- said tube having a groove formed on the inner surface thereof, a snap ring in said groove to define a stop;
- and an axially movable compression-and-impact-piston tightly contained in the tube below the snap ring.
A process for the production of poles made of compressed concrete employing a device having a tube and a ram for ramming said tube into the ground, said process including the application of a force in the direction of the removal of the tube, which tube is rammed-in and filled with the concrete to be compressed, and which process includes the formation of an air pocket above the column of concrete, which is contained in the tube, characterized by the fact, that subsequent to each compression of the air pocket, there is an impact impulse in the direction of the removal of the tube, and characterized by the fact, that for tubes which reach down to ground water, a pocket of compressed air is lowered in the tube, that the ground water, which was replaced by the air pocket is lifted to a position above the air pocket, that after removal of the ground water from the tube concrete is introduced into the tube against the pressure of the air pocket with gradual lifting of the air pocket, and that after introduction of the concrete the air pocket is moved downward intermittently and each time subsequently the tube is subjected to an impact impulse in the direction of removal.
A device for the production of earth holes and poles, which are located in these holes, which poles are made of poured or compressed concrete, said device comprising a ram equipped with an axial, cylindrical opening, an earth remover insertable in said opening for the concurrent removal of the earth by means of said earth remover;
- a tube, said ram further comprising a cylindrical extension which is inserted into said tube and serves to guide the ram during its ramming movements, which ram can be lifted and lowered by a crane, and which ram is brought into contact with the frontal plane of the tube characterized by the fact, that the tube is connected in a disconnectable fashion with the ram by means of yielding devices, which determine the lifting height of the ram, a ring-shaped shoulder formed on the ram and having a groove for the reception of a noise-muffling buffer and for the reception of the frontal plane of the tube, and characterized by the fact, that a compression-and-impact-piston is tightly contained in the tube, which is attached to the hook of a crane by means of pulling ropes and which is equipped with a safety rod, which compression-and-impact-piston is equipped with a closeable drilled hole, which permeates the compression-and-impact-piston and which drilled hole is equipped at the side facing the ground water with a flexible tube, which tube runs beneath the level of ground water and which compression-and-impact-piston is equipped with a closeable tube, which serves for the introduction of concrete and the compression-and-impact-piston is equipped with a closeable air line, which permeates it.
Dependencies are inferred from the claim text.