KR100371819B1 - Basic pile manufacturing apparatus and method equipped with drilling machine - Google Patents

Abstract

The apparatus of the present invention comprises a drilling auger 1, means for rotating the screw auger, and means 14 for running the screw auger in the longitudinal direction, wherein the screw auger 1 comprises It has two concentric tubes, the outer tube (2) occupies the upper part of the screw awl (1), the inner tube (3) partially protrudes as the extension of the upper part described above and the lower part of the screw awl (1). Occupies, the inner tube 3 has a screw 5, the outer tube 2 has a screw 4 or a plurality of blades 11, the two tubes 2, 3 Are displaceable with respect to each other, and the rotating means and the driving means 14 are independent of each of the tubes 2, 3.

The apparatus of the present invention makes it possible in particular to carry out a multi-acting operation of performing continuous screw drilling, dynamic compacting, emulsions, dynamic compacting and rendering and filling.

Description

Apparatus and method for manufacturing foundation pile with drilling machine

The present invention relates to an apparatus for manufacturing a foundation pile having a drilling machine in the form of a screw auger, means for rotating the screw auger, and means for running the screw auger in the longitudinal direction. will be. The invention also relates to a method for performing foundation piling with a drilling machine using the apparatus of the invention.

In order to make a foundation for a building, it is necessary to manufacture a concrete pile and for this a bore hole must be made in the ground.

To make this pile, the known technique is based on the use of a continuous screw screw awl having means for injecting concrete into the hole. Thus, the drilling operation is combined with filling the hole with concrete to the desired height.

The screw awl may be driven by a drilling crane of the type described in Spanish Patent No. 8701148 of the same applicant.

This type of foundation device is particularly useful for building sites with some degree of compaction. However, the ground is soft, the walls of the holes it forms are not concise, and because of their deeper entry into the ground, they can lead to higher concrete consumption.

The conventional drilling and consolidation devices have the disadvantage that they require high drive power, so that the shaft of the screw awl runs with the same diameter as the pile being produced, resulting in a large and expensive machine. In addition, when the land must be frequently strengthened by spraying the consolidation product mixed with the ground, an apparatus for forming an emulsion-like paste and driving two or more screw awls in opposite directions is used. .

Another technical solution has been proposed to improve the quality of the holes as described in Spanish Patent No. 555119 of the same Applicant as the applicant of the present application, in which a continuous screw screw auger is used to inject the concrete by spraying concrete against the wall. Used to combine manufacturing and drilling operations, thereby providing a coating layer. Thus, a concrete jacket is achieved by having holes that are properly uniformed.

Also in this case, there is a drawback of excessive consumption of concrete, so that for soft land, a restoration is always made at the same time spraying the concrete and at the same time extracting the screw auger at a higher rate, whereby the concrete consumption Decreases. Nevertheless, this operation can be a wall of holes, where the ground has weak points in the less dense land strata.

The ground is drilled and lined using work pipes that are immersed into the drilled bore holes. This lining operation can be carried out simultaneously with the drilling operation, so that the screw awl passes through the inside of the tube. However, this is complicated because of the use of the tube, which is also expensive and also extracts from the tube after the hole is filled with concrete.

As described, there are a number of devices that provide different solutions for manufacturing holes for foundation piles.

It is an object of the present invention to provide a new system (apparatus and method) for performing basic filings, allowing for the combination of multiple actions in a single device by using according to the choices described below.

The device of the present invention for foundation piling has the screw auger comprising two concentric tubes, the outer tube occupying the top of the screw auger, the inner tube partially protruding like the extension of the upper part described above and the screw auger Occupies a lower portion of the inner tube, the inner tube having screws and the outer tube having screws or a plurality of blades, the two tubes being displaceable relative to one another, the rotating means and the driving means being independent of each of the tubes It is characterized by that.

According to a preferred embodiment, the inner tube comprises one or more orifices in an area that is not covered when the tube is displaced with respect to the outer tube.

Due to this feature, the apparatus of the present invention for the manufacture of a foundation pile with a drilling machine can carry out multiple actions by the combined action of the rotation of the concentric tubes and the driving means.

These actions are as follows:

Continuous screw: This piling system is one of the most common used today, although the different strata of the soil are not uniform and have different densities that often present the disadvantages of excessive consumption of concrete.

This action is achieved by locking the outer tube on the inner tube, so that the two tubes are rotated to each other in the same direction, which rotates the screw auger at a desired speed, depending on the characteristics of the building site, and the concrete is sprayed into the screw auger. It is removed and deposited in the bore hole at the same time.

Dynamic compaction: The action is achieved by rotating the inner tube against the outer tube and at different relative speeds of rotation, while the screw awl is advanced vertically into the ground. So the soil becomes dense, significantly increasing the wall strength of the hole and reducing its permeability.

Emulsion: The action is achieved by longitudinal running of the inner tube relative to the outer tube. Thus the area is not covered, where one or more orifices are provided through which the concrete or other feedstock is sprayed. Thus, when the screw awl is drilled into the ground, it creates a wall of the pile. The action also strengthens the soil by allowing the appropriate material to flow through the orifice and mix with the soil.

This action requires an outer tube with a blade.

Dynamic consolidation and wall fabrication of piles; This action is achieved by rotating the inner tube vertically in a direction opposite to the direction of the outer tube and at different speeds. Once the desired pile depth is achieved, while removing the screw awl, the concrete is sprayed through an orifice existing between the inner tube and the outer tube. Thus, a dense wall is achieved.

Preferably, the lower end of the screw awl is provided with a head to enhance penetration and to center the screw auger when a hole is made.

Preferably, the penetrating and centrifugal head is attached to and mounted on the inner tube and can be displaced relative to the inner tube, allowing material to emerge from the interior of the tube towards the soil at the position when the head is separated from the tube. An opening is provided.

Thus, the fifth action is achieved consisting of a production material which is released from the interior of the tube towards the soil, and the through and centering heads are displaced.

The invention also relates to a number of methods.

The first method for foundation piling using the device of the present invention with a drilling machine consists of coupling the lower screw to the blade mechanism, thereby allowing it to rotate simultaneously and to drill holes in the ground.

The second method for foundation piling using the device of the invention with a drilling machine is configured to rotate the inner tube in a direction opposite to the outer tube, while the screw awl is advanced vertically through the ground. Thus dynamic consolidation of the land is achieved.

Preferably, the rotational speeds of the inner and outer tubes are different to improve consolidation.

A third method for foundation piling using the device of the present invention with a drilling machine consists of moving an inner tube to an uncovered area relative to the outer tube, where concrete or other compaction material is There are one or more orifices that are sprayed to create a wall of the pile when the screw awl is drilled into the ground, or that reinforce the ground by allowing a suitable material to flow through the orifice.

A fourth method for foundation piling using the device of the present invention with a drilling machine consists in discharging material through the interior of the tube and towards the soil after displacing the through and centering heads.

The dynamic compaction method can also be combined with the rendering process.

As described, the present invention provides a new system that includes the apparatus and methods having the multiple basis described.

1 is a cross sectional view of the screw auger when the screw auger operates as a continuous screw with an outer tube attached to the inner tube such that the outer tube and the inner tube can rotate simultaneously;

FIG. 2 is a cross-sectional view similar to the screw auger of FIG. 1 but showing a cross section of the screw auger showing the inner tube when the inner tube is displaced with respect to the outer tube to perform an emulsion action. FIG.

3 is a cross-sectional view similar to the screw auger of FIG. 2 but showing a screw auger with a centrifugal head displaced relative to the inner tube.

4 is a front view of a rotary table detailing a screw awl in the form of an inner tube with screws and an upper tube with a plurality of blades;

5 is a cross-sectional view corresponding to the side of FIG. 4.

6 is a front view of a drilling crane showing the two rotary tables.

FIG. 7 is a side view corresponding to FIG. 6 showing a screw awl in which the inner tube has a screw and the outer tube has a plurality of blades. FIG.

8 is a front view of a drilling crane in which the screw awl is provided with screws.

* Description of the symbols for the main parts of the drawings *

1: screw auger 2: outer tube

3: inner tube 4: screw

11: blade 12: through and centering head

14: rotation and driving means 15, 16: rotary table

20: drive means

To describe in detail all of the present application, a non-limiting example showing some preferred embodiments of the apparatus and method for basic filing of the present invention is described with reference to the drawings, which are shown schematically and alone.

1 shows a screw auger 1 comprising two concentric tubes 2, 3, the outer tube 2 occupying the upper part of the screw auger, and the inner tube 3 extending the upper part described above. It is partially protruded as a part and occupies the lower part of the screw awl. The outer tube 2 has a screw 4, the inner tube 3 has a screw 5 (the appearance of the two screws is shown in dashed lines) and the tubes 2, 3 are connected to each other. This allows them to rotate simultaneously and to act as a continuous screw, as described above. The upper part of the screw awl 1 has means 6 for connecting the screw awl to a rotary table. The inner tube 3 has means 7, 8 for running longitudinally relative to the outer tube 2.

As shown in FIG. 2, the inner tube 3 has an orifice 9 in an area 10 that leaves an uncovered portion on the left side when the tube 3 is displaced with respect to the outer tube 2. do. In this position, the device of the present invention performs the emulsion action and creates a wall of the pile as described above. For this purpose, the outer tube 2 has a blade 11 (shown in dashed lines in the figure) and the inner tube 3 has a screw 4 (also shown in dashed lines).

The lower end of the screw awl 1 has a penetrating and centering head 12 which is concentrically coupled at the lower end of the inner tube 3 and displaceable with respect to it.

When the head 12 is driven relative to the inner tube 3, the opening 13 remains uncovered and is fed through the opening from the inside of the inner tube 3 as shown in FIG. 3. The substance is released.

As shown in FIG. 4, the rotating and traveling means 14 have two rotary tables 15, 16 with two reduction gear motors acting independently of each of the tubes 2, 3 of the screw awl 1. ).

As shown in FIG. 5, the rotating and traveling means 14 are suitably attached to the sliding element 17. The sliding element runs along the tower 18 of the drilling crane 19 (FIGS. 6, 7 and 8) and allows vertical movement of the screw awl. The sliding element can be driven by the drilling crane 19 via drive means 20 connected on the respective rotary tables 15, 16.

Using the apparatus of the present invention, the drilling of the ground is carried out by connecting the lower screw 5 to the braid mechanism 11, whereby the two are rotated simultaneously.

Dynamic consolidation of the land is carried out by rotating the inner tube 3 in an opposite direction to the outer tube 2 at different relative speeds, and the screw awl 1 is advanced vertically through the ground. .

The third method for foundation piling with a drilling machine using the apparatus of the invention consists in displacing the inner tube 3 relative to the outer tube 2 so as not to cover the region 10, in which There are one or more orifices 9 in which concrete or other dense material is sprayed to make the wall of the pile when the screw awl is drilled into the ground, or to reinforce the ground by allowing a suitable material to flow through the orifice 9. .

Another method consists in discharging the substance through the orifice 13 and through the interior of the tube 3 towards the soil, the through and centering head 12 being displaced relative to the inner tube 3.

The present invention provides a new system (apparatus and method) for performing basic filings, allowing the combination of multiple actions in a single device by using according to the choices described above.

Claims (10)

In the basic pile manufacturing apparatus having a drilling machine including a screw auger (1), a means for rotating the screw auger, and a means (14) for running the screw auger in the longitudinal direction, The screw auger 1 comprises two concentric tubes, the outer tube 2 occupies the upper part of the screw auger 1, and the inner tube 3 partially protrudes as an extension of the upper part described above and the screw Occupies the lower part of the awl 1, the inner tube 3 has a screw 5, the outer tube 2 has a screw 4 or a plurality of blades 11, the two tubes ( 2,3) are displaceable relative to one another, and said rotating means and said driving means (14) are independent of each of said tubes (2,3). 2. The inner tube (3) according to claim 1, wherein the inner tube (3) comprises at least one orifice (9) in the area (10) which remains uncovered when the tube (3) is displaced with respect to the outer tube (2). Basic pile manufacturing apparatus provided with a drilling machine characterized by the above-mentioned. 2. Apparatus according to claim 1, characterized in that the lower end of the screw awl (1) has a through and centering head (12). 4. The through and centering head (12) according to claim 3, wherein the through and centering head (12) is attached and mounted to the inner tube (3) and displaceable with respect to the inner tube (3), the head being in position when the head is separated from the tube. Apparatus for manufacturing a foundation pile with a drilling machine, characterized in that it has an opening (13) for releasing material from the interior of the material towards the soil. 4. Apparatus according to claim 3, characterized in that the through and centering head (12) is conical in order to facilitate the penetration of the screw awl (1). A method of manufacturing a foundation pile using the apparatus as claimed in any one of claims 1 to 5 comprising a drilling machine, A method of manufacturing a foundation pile, characterized in that the lower screw (5) is connected to the blade mechanism (11) so that the blade mechanism (11) and the lower screw (5) can be rotated simultaneously and drilled into the ground. A method of manufacturing a foundation pile using the apparatus as claimed in any one of claims 1 to 5 comprising a drilling machine, A method of manufacturing a foundation pile, characterized by rotating said inner tube (3) in an opposite direction with respect to said outer tube (2) while said screw auger (1) is advanced vertically through the ground to densify soil. 8. Method according to claim 7, characterized in that the rotational speeds of the inner tube (5) and the outer tube (4) are different in order to improve compaction. A method of manufacturing a foundation pile using the apparatus as claimed in any one of claims 1 to 5 comprising a drilling machine, Displace the inner tube 3 with respect to the outer tube 2 so as not to cover the region 10, in which the wall of the pile 1 is manufactured while the screw awl is drilled into the ground, or the orifice ( 9) A method of manufacturing a foundation pile, characterized in that there is at least one orifice (9) through which concrete or other suitable dense material is sprayed through in order to reinforce the ground by allowing a suitable material to flow through it. A method of manufacturing a foundation pile using the apparatus as claimed in any one of claims 1 to 5 comprising a drilling machine, When the through and centering head (12) is displaced, the foundation pile manufacturing method characterized in that it releases the material toward the soil through the interior of the tube.