DE8400684U1 - DEVICE FOR THE PRODUCTION OF CONCRETE DRILL PILES - Google Patents

Description

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DIPU-ING. OR KRETfcSCHMA'R "* * * _aH AMBUROi

AT THE STROHMAUBE 84 PATENT ADVERTISER RU P 040/34 67 43

TELEX 9 i73 64 «OKPA D

APPROVED REPRESENTATIVE AT THE EUROPEAN PATENT OFFICE

company

Paul Hammers GmbH * _{Λ τ}

11th January

2000 Hamburg 1 K / s / Hi - 6332

Lawyer File: 6332

Device for the production of concrete bored piles

The invention relates to a device for the production of concrete bored piles with a height movable on a steel lattice mast guided leader on which a guide carriage for a manufacturing element of the concrete pile is movable in height is out, and with a table that rotates with öier in it Pipe socket, the cylinder piston arrangements for " Close and open the tube sockets for one in the floors has insertable and extractable drill pipe, is executed and with a height guide on the base unit the device is engaged.

In a known device of this type is on the guide carriage a concrete silo attached to fill the drill pipe. It also serves for the vertical guidance of the Drill pipe, which is at the lower end in the known design is closed with a cast iron drill bit, which remains in the ground after removing the drill pipe. At this The well-known version is the table as a turntable for the

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Drill pipe running. Inside the table are cylinder piston assemblies arranged radially and press inwards to surround the pipe. These cylinder piston assemblies belong to a tube mount that can be rotated on the table. The Tiach has hydraulic motors by which the drill pipe is pressed in only one direction of rotation, to screw it into the ground with its drill bit, on which there is an external thread. Included it is also known to open the table after removing the Bohrrohrfa.3sung to be lifted in a vertical height guide arranged on the basic device and to be fixed again on the drill pipe, so that larger pipe lengths can be drilled into the ground in sections.

The vertical height guide consists of two vertically arranged guide elements, so-called columns with a U-shaped cross-section, at the upper ends of which cylinder arrangements are arranged, the pistons of which are connected to the table via the piston rod. This cylinder assemblies are under a hydraulic control, which involves the opening and closing of the pipe socket, so that the table batchwise with open socket according lifted above is replaced and ^v during the drilling operation with a closed tube presses downward. The table can be moved in the guide elements that are attached to the base unit. Such a height guide is included for the invention. Side rails of the table grip into the U-shaped guide elements.

This known device is advantageous to a certain extent for the production of concrete bond posts. That with a vertical pressure of approx. up to 20 t into the ground

screwed-in closed drill pipe enables the ψ

Positioning of individual concrete bored piles with high load-bearing capacity. An application of this technique is for the production of bored pile walls as well as for the production of Concrete bored piles are not possible in densely packed soils. In addition, the cast iron drill bit is always lost. Finally, due to the dimensions of the drilling table and the earth displacement process during drilling, it cannot worked in the immediate vicinity of neighboring house walls, cellars and other structural facilities will.

According to the known design, a basic device with a crawler track and a steel lattice mast is also included and brokers and hydraulic drive systems with diesel engine, lifting unit, driver's cab and various Winches.

The invention is based on the object of providing a device specified at the outset while eliminating the disadvantages to improve the known design and thereby also to create a device that allows the production of Bored pile walls made possible.

This object is achieved according to the invention in that the guide carriage has a rotary head which engages with a worm with a tubular hollow axis and has an input connection for the hollow axis, that a height-moving device for the rotary head is provided on the leader and the table is designed as a chocolate table which Has drive means for intermittent back and forth rotation of the encased drill pipe. Concreting the concrete drilling

The pile while turning the worm at the same time, concrete is pumped through its hollow axis, and the drill pipe, which is open at the bottom, becomes intermittent when it is driven into the ground moved back and forth. This results in a fundamentally different mode of operation than in the known embodiment in that the auger trailing the drill pipe conveys the soil in the pipe upwards and thus preventing the soil from being displaced to the outside by the pipe. During the concreting process, the screw pulled and the soil transported over a landslide attached above the pipe into the open construction site.

The execution of the pipe moving device as a shock table with intermittent back and forth rotation of the pipe socket represents a solution of the intricate drilling table that is both simplified and smaller in terms of dimensions the known device. In contrast to the radially arranged in the known embodiment The shock table according to the invention advantageously has an openable frame made of collapsible pressure stamps Segments that are movably mounted in the shock table and with at least one cylinder piston device connected for reciprocating movement in the circumferential direction with the other end of the cylinder piston assembly being fixed to the shock table.

Two or more obstinate acts are preferred Cylinder piston means for reciprocating the bezel. Through such a shock table it is possible to get by with a lighter and smaller device for edging the pipe, the introduction of the pile in the immediate vicinity of neighboring parts of the building. When adjusting the folding, inside

concave segments also results in a tolerance for different pipe dimensions, so that concrete bored piles with different Cross-sections can be made.

The border advantageously has at least two segments on, which are connected to one another by a joint and joined together at their free ends by a hydraulic cylinder are, the cylinder piston assemblies on trunnions between the joint and the hydraulic cylinder attack and are pivotably mounted at their other end in the shock table. A greater number than two segment jaws are included. 1 / these must but then again either with lever rods between individual segment jaws or several locking devices be provided for joining.

This secure, reciprocating shock device firmly encompassing the drill pipe is an essential one Feature of the invention, also in connection with the leadership and the drive of the hollow screw, which is coaxial with the Bringing the tube inside must be guided.

It is particularly advantageous for the worm, which is designed with play in relation to the drill pipe, to have at least two threads at its lower engagement end and is diametrically positioned at two points mutually lying cutting edges. This includes the fact that at least two protruding edges on each cutting edge Teeth are arranged. The at least two-flight design of the screw tip adjusts when it is screwed in counter-torque moving around the axis of rotation, which also occurs when greater resistance or denser resistance occurs vertical screwing in the pipe

enables. The game between screw and tube is designed to be particularly small in order to prevent that Clumps of earth or stones are located between the outer circumference of the snail pinch the pipe and cause damage.

For ease of use, it is preferred that the tubular hollow axis of the screw at the upper end one Has polygonal cross-section and by plug connection with a receiving opening of a hollow axle in the power turret can be connected, which receiving opening is connected to the input connection, wherein the receiving opening the hollow axle is connected in a gear part of a gear unit to a hydraulic motor of the power rotary head. Of the The hydraulic motor turns the hollow axle forwards or backwards. The rotation speed is infinitely adjustable.

The power rotary head is by means of a solidly designed guide carriage, which the entire torque of the rotational movement the snail has to catch, guided by the leader. The power rotary head can advantageously be pivoted mounted on the guide carriage, so that the screw can be swung forward, which after completion of a Stake for cleaning and generally discarding a screw used as a lifting shovel is also advantageous. The power rotary head or its guide carriage is expedient movable in the vertical direction by a pulley device guided over the upper end of the leader. This articulation of the pulley device is also expediently attached so as to be pivotable.

The effect of the back and forth rotation of the drill pipe is further enhanced by the fact that it is jagged at the lower end.

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The invention is illustrated below with the aid of exemplary embodiments explained, which are shown in the drawing. In the drawing show:

Fig. 1 is a side view of an inventive

Device for explaining the basic composition}

FIG. 2 shows a partial front view of the device according to FIG. 1 on an enlarged scale, in particular to explain the arrangement of a shock table device and its height adjustment device

Fig. 3 is a section along the line III-III in Fig. 2;

Fig. 4- a basic side view according to Fig. 3 »

5 shows a schematic side view of the power rotary head;

Fig. 6 is a side view of the worm with interruption;

7 is a view of the screw from below;

Fig. 8 is a section through the upper end of the screw along the line VIII-VIII in Fig. 6,

In all figures, the same parts are denoted by the same reference numerals.

According to Fig. 1, the basic device 1 consists of a chassis frame with drive motor, hydraulic unit, hydraulic

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lisch operated caterpillar track 2 and a cab. At the front end of the base unit 1 there is a Steel lattice mast 3 »which is supported on a joint 7 and can be telescoped © !! Support 8 forward and can be tilted backwards. A leader 5 is guided on this steel lattice mast 3 so that it can be raised vertically. He is attached to a double-T-shaped steel girder, which is movable in a rail system of the steel lattice mast. The leader can, in accordance with the double arrow 6 shown, on the steel lattice mast by means of a winch (not shown) 3 can be moved in the vertical direction. This is the case with hydraulic lifting unit vehicles with telescopic masts known.

In this context, the prior art, for example hydraulic Hugaggregat vehicles with Telescopic masts, referenced.

On the leader 5 is a power rotary head in the upper area 9, which will be described in more detail with reference to FIG. He is in a broker 5 track system after pivoted on the outside. The guide can contain 5 T-shaped profiles on the leader, which are of corresponding Guide rails on the power rotary head 9 are gripped from behind. The power rotary head 9 is in the form of a pulley block trained height movement device 10 in connection, which has rollers 11 at the upper end of the leader 5 to a hydraulic winch 4 on the Grundgefat 1 is performed.

In the power head 9 is the upper end of a tube *

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formifien hollow axis 13 of a screw H used in a rotationally fixed manner. This is screwed into the ground within a pipe of the drill pipe 15 »The drill pipe 15 is through a Shock table 16 held at the front end of the base unit 1 is attached. This shock table rotates the drill pipe 15 back and forth and almost transfers the weight of the entire device in the vertical direction on the pipe in which the shock table, which is mounted to move in height, is hydraulically is moved down. Dadureh is pushed the drill pipe into the ground, while the through the power turret driven screw H screws inside the drill pipe 15 in the ground.

The hollow axis 13 of the screw U is with a hollow axis 55 (Fig. 5) of the rotary head 9 connected by a plug connection. Above the rotary head 9 is an input connection 17 attached to the hollow axis 13 of the screw H, to which concrete hoses 18 can be attached. Above a concrete pump can concrete during the work process through the power rotary head 9 and the hollow axis 13 of the screw be brought into the interior of the drill pipe 15.

In the area of the input connection 17 on the power rotary head 9, valve arrangements 19 can be attached, in particular a synchronization between the opening on the one hand and the withdrawal of the screw on the other hand is provided can be.

In Fig. 2, the shock table 16 is shown in its arrangement on the base unit 1 with the crawler chassis 2 ,. It can be seen that the leader 5 is located centrally in front of the steel lattice mast 3. Before the lower end of the

A guide for the shock table 16 is attached to the steel lattice mast. This expediently has double-T-shaped pillars 20, 21, which have special support elements 22, 23 as footrests. These footrests are extendable and form with a bowl-shaped shape an abutment on the respective floor. On the pillars 20, 21 are cylinder assemblies at the top 24, 25 arranged, the piston with the Shock table 16 are connected in order to drive it up after opening a socket for the drill pipe 15, so that a renewed intervention in the drill pipe can occur at a different altitude. By the pressure effect of the shock table, the drill pipe 15 is pressed into the ground, the penetration into the ground through a serrated design of the lower end of the drill pipe is improved.

According to FIG. 3, the shock table 16 has a frame 26. In this frame are two cylinder piston devices 27, 28 each mounted pivotably about the vertical hinge pins 29, 30 attached to the frame 26. The other ends of the cylinder piston devices 27, 28 are with pivot pins 31, 32 mounted on foldable jaw-shaped segments 33, 34, the pivot pins 31, 32 in openings of the cylinder piston devices 27, 28 engage. The segments 33, 34 are at one end by a hinge 35 joined together and guided together or openable at its other end by hydraulic cylinder 36. Another hydraulic cylinder is located under the "At least the joint 35 is in the." Frame 26 supported. These hydraulic cylinders, as shown on hydraulic cylinder 36, are pins 37 for the cylinder assembly and 38 for the piston rod are each articulated on the segments 33, 34. Interior, especially with hinged jaws 39 - 42 with permanently elastic coverings,

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which are arranged on the segments 33, 34 summarize the Drill pipe 15 a. By mutual excitation of the cylinder piston devices 27, 28, the casing of the drill pipe 15 and thus also this itself moved back and forth. According to FIG. 4 there are 16 bearing surfaces on the shock table 43, 44 arranged as parts of double T-beams, between which the segments 33, 34 are movably guided in the circumferential direction are. The bearing surfaces are expediently provided with a layer of plastic that reduces stress.

As can be seen from FIG. 3, the shock table 16 is on opposite sides protruding outwardly beam-shaped brackets 45, 46, which are part of the height movement device form. Associated with this part are U-shaped receptacles 47, 48 (FIG. 2), which form the carrier-shaped brackets 45, 46, which via rod holders 49, 50 with the piston rods of the cylinder assemblies 24, 25 related.

Fig. 5 shows part of the leader 5 and a side view of the power rotary head 9 with dashed lines inner parts. This is guided with a guide carriage 51, which is conventional per se, on the leader 5 and on the Köhen movement device 10 hung. As can be seen from Fig. 1 and 5, are on the schematically illustrated guide carriage 51 pivot bearings 66 are arranged, in which the power rotary head 9 is pivotably guided. For example pins 67 (x) held in the pivot bearings 66 are attached so that the worm 14 or its hollow axis 13, after it has been pulled out of the drill pipe, can be pivoted forward in accordance with the dashed line 68 can «The connecting rod 69 is corresponding to the pulley-like Höhenbewetfungseinrichtung 10 pivotable mounted on the guide carriage 51.

U) of the rotary head ea 9

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A hydraulic motor 52 is arranged on the power rotary head 9, which drives the hollow axle 55 via gear parts 53, 54 * This hollow axis is non-round downwards, in particular in the form of a hexagon, and takes the upper one End of the tubular hollow axis 13 of the screw frictionally. Reference is made to FIGS. 6 and 8 for this purpose.

The hollow axis 13 of the screw 1 * 1, which in its inner area of the thread 56 is made round, has a corresponding non-round, in particular, in the upper area hexagonal cross-section 57 (Fig. 8), so that the frictional engagement in the corresponding non-circular as a support opening provided hollow axis 55 of the power rotary head gear is possible.

The thread 56 of the worm 14 must be at least Extend over the entire length of a concrete bored pile to be produced. He is preferably like that too 3 pipe, two or more meters longer than a manufacturable concrete pile in order to facilitate the manufacture. The hollow axis of the screw expediently has a helical-free section at the top. This can be useful in Compared to the length of the drill pipe, it protrudes by the order of one meter.

According to FIG. 6, the screw 14 in the lower region 58, which extends over a length of about 30 cm, has a double thread through an additional thread 59, so that two aligned cutting edges 60, 6l are present at the lower end. Expediently, two projecting teeth 62, 63 and 6H _t 65 each extend from these (FIG. 7). Several teeth can be arranged. As a result, even engagement when screwing in the worm I ¹ * is achieved.

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The screw is turned in to dig itself into the ground. Also included is a further rotation after reaching the desired depth for conveying out the soil enclosed in the drill pipe with simultaneous backfilling of. Concrete through, the inlet connection 17 and the hollow axis 13. During the filling process, the screw I ¹ I is lifted out of the drill pipe 15 while still rotating, together with the soil on it. After the concreting process has been completed, the auger I ¹ * can be cleaned outside the drill pipe 15. For this purpose, it is possible to tilt the worm forward, since the power rotary head 9 is movably supported on its guide carriage.

In Fiu .. 1, the fastening supports 70 are shown between the base unit 1 and the guide for the shock table 16, in particular the columns 20, 21 in which the shock table can be moved.

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Claims (1)

■ I «· · ft · · · ί ; ,,, t ι j ···· DIPL.-ING. O. R. KRETZSCWMAk AT STtOBKAUlI 3 « PATENT ADVOCATE »UP 0 * 0/3 * 67 * 3 TELEX 3 173 ** β OKPA D APPROVED REPRESENTATIVE AT THE PATENT OFFICE TO RO PAlSCHEN - company
Paul Hammers GmbH K / s - 6332 Hamburg 1 January 11, 1984 Lawyer File: 6332 Protection claims 1. Device for the production of concrete bored piles Movable in height with a steel lattice mast guided leader on which a guide carriage for a manufacturing element of the concrete pile is movable in height is guided, and with a table, the cylinder-piston assemblies with a rotatable tube holder in it for closing and opening the tube sockets for an insertable and extractable one in the ground Has drill pipe, is executed and with a height guide on the basic unit of the device is in engagement, characterized in that the guide carriage has a power rotary head (9), which engages with a screw (H) with a tubular hollow axis (13) and has an input connection (17) for the hollow axle (13) has that on the leader (5) a height movement device (10) for KONfENi DMBSDNtM BANKIBLZ ΛΟΟ βΟΟ ΟΟΊ «ONTO-fat> 9 * 139 37 »· 'pOBTBCHBCK HAMBURO (BLZ 300 100 2ÖI NR. 19S7 66 · 3 © β the power rotary head (9) is provided and the table is designed as a shock table (16), the drive devices (27, 28) for intermittent back and forth Has rotation of the framed drill pipe (15). ; 2. Device according to claim 1, characterized in that ;. that the height movement device (10) as bottles train is running. 3. Device according to claim 1, characterized gekennzeichrst, • that the shock table (16) has an openable frame made of collapsible segments (33, 34), which are movably mounted in the shock table and with at least one cylinder piston device (27, 28) are connected for reciprocating movement in the circumferential direction, with the other end of the cylinder-piston device is set on the shock table (16). 4 ·. Device according to claim 3 »characterized in that that two or more oppositely acting cylinder piston devices (27, 28) for reciprocating movement the enclosure are provided. 5. Apparatus according to claim 3 and 4, characterized in that the enclosure has two segments (33, 34) which are connected to one another by a joint (35) and connected at their free ends by a hydraulic cylinder (36) »wherein the cylinder piston devices (27, 28) engage on bearing journals (31 »32) between the joint (35) and the hydraulic cylinder (36) and their other end is pivotably mounted in the shock table (16). t · · t «· * t i« i • · * · * ·· Itii 11 · ■ • · till I I · It If 1 * 11 « ·· Itlilf 6. Apparatus according to claim 1, characterized in that the execution with play with respect to the drill pipe (15) The screw (14) has at least two threads at its lower engagement end and two diametrically opposed having mutually lying cutting edges (60, 61). 7. Apparatus according to claim 6, characterized in that that at least two projecting teeth (62-65) are arranged on each cutting edge (60, 61). 8. The device according to claim 1, characterized in that the tubular hollow axis (13) of the tendon (14) has a polygonal cross-section (57) at the upper end and by means of a plug connection with a receiving opening a hollow shaft (55) can be connected in the power rotary head (9), which receiving opening is connected to the input connection (17) is connected, the receiving opening of the hollow axle (55) in a gear part (53) of a Gear unit is connected to a hydraulic motor (52) of the power rotary head (9). 9. Device according to claim 1 or 8, characterized in that that the power rotary head (9) is pivotably arranged on the guide carriage. 10. Device according to one of claims 1 and 3, characterized characterized in that the drill pipe (15) is jagged at the bottom. 11. Device according to one of claims 1-10, characterized in that the drill pipe (15) and the screw (14) longer than a concrete bored pile to be produced are executed and the hollow axis (13) of the screw
(14) has a helix-free section at the top that protrudes beyond the drill pipe. 12. Device according to one of the claims. 1-11, characterized by the arrangement on a frame, in particular a hydraulically operated basic device
with a crawler track (2).