WO1999054553A1 - Device and method for inserting an object into the ground - Google Patents

Device and method for inserting an object into the ground Download PDF

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Publication number
WO1999054553A1
WO1999054553A1 PCT/NL1999/000227 NL9900227W WO9954553A1 WO 1999054553 A1 WO1999054553 A1 WO 1999054553A1 NL 9900227 W NL9900227 W NL 9900227W WO 9954553 A1 WO9954553 A1 WO 9954553A1
Authority
WO
WIPO (PCT)
Prior art keywords
recess
ground
clamping means
clamping members
wall
Prior art date
Application number
PCT/NL1999/000227
Other languages
French (fr)
Inventor
Johannes Bernardus Kenkhuis
Original Assignee
International Construction Equipment B.V.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Construction Equipment B.V. filed Critical International Construction Equipment B.V.
Priority to AU34451/99A priority Critical patent/AU3445199A/en
Publication of WO1999054553A1 publication Critical patent/WO1999054553A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D9/00—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof
    • E02D9/02—Removing sheet piles bulkheads, piles, mould-pipes or other moulds or parts thereof by withdrawing
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/28—Placing of hollow pipes or mould pipes by means arranged inside the piles or pipes

Definitions

  • the invention relates to a method for inserting an elongated object which is provided with a recess at one end into the ground, or removing it from the ground, in substantially vertical direction, wherein a driving device is attached to said object by clamping means.
  • Such a driving device may be a vibrating device, in which eccentrically rotating weights generate vibration.
  • An object can be inserted into the ground by attaching such a vibrating device to said object, so that said object is inserted into the ground, either under the influence of its own weight or by exerting an additional downward force thereon, while being vibrated. While the term inserting an object into the ground is used herein, the same technique can be used for removing said object from the ground, and consequently it applies to both operations. When an object is being removed, an upward force rather than a downward force is exerted on the object during said vibration.
  • the object of the invention is to make it possible to use clamping means which can be designed to have limited dimensions, which operate reliably and which are capable of inserting an elongated object entirely into the ground .
  • the object is to that end engaged by clamping means, wherein said clamping means extend into a recess formed in the end of said object and clampingly engage the object on the wall of the recess.
  • an object whose circumferential shape is substantially constant along its length, such as a pipe is inserted into the ground.
  • a number of clamping members are moved outwardly in radial direction with respect to the elongated object, until said clamping members abut against the wall of the recess. Since the clamping members move outwardly relative to each other thereby, said movement can be effected by having the clamping members push off against each another. A conical mandrel can thereby be moved between the clamping members in longitudinal direction with respect to the object, causing the clamping members to move in radial direction.
  • This enables a simple construction of the clamping means of limited dimension, whilst it is nevertheless possible to exert large clamping forces.
  • three or four, or even more clamping members are used.
  • convexly curved engaging surfaces are present on the clamping members, which engaging surfaces clampingly engage the cylindrical inner wall of the recess in circumferentially spaced-apart places.
  • each clamping member comprises two engaging surfaces, so that a total of eight engaging surfaces clampingly engage the inner wall of the recess when four clamping members are provided.
  • the clamping means are also provided with a stop surface, which abuts against a transversely extending surface on the end of the elongated object.
  • the elongated object is a pipe, and said stop surface is annular, so that it is capable of abutment against the circular edge of the pipe.
  • a good clamping action both of the stop surface and of the clamping members can be obtained by moving the clamping members not only radially outwards upon clamping, but also towards the stop surface. As a result of this obliquely upward movement, also the stop surface of the clamping means is pressed firmly against the end of the object.
  • the driving device is a vibrating device, in which eccentrically rotating weights generate vibration.
  • the invention furthermore relates to a driving device for inserting an elongated object into the ground, which device comprises means which are capable of engaging the object in a recess present at the end of said object, wherein the clamping members clampingly engage against the inner wall of said recess.
  • the device comprises a narrow portion, which extends between said clamping members and the part of the device which generates the driving movement, which narrow portion has a transverse 4 dimension which is substantially equal to, or smaller than, the transverse dimension of the object to be inserted into the ground.
  • the narrow portion has a transverse dimension which is smaller than the outside diameter of the pipe, so that the pipe can be inserted entirely into the ground, whilst the driving device will remain above the ground, of course.
  • the length of the narrow portion is larger than the transverse dimension thereof, preferably it is at least twice as large.
  • said narrow portion has a length of more than one metre, so that the object can readily be moved to a position below the ground surface .
  • Figure 1 is a longitudinal sectional view of the clamping means ;
  • Figure 2 is a cross-sectional view along line II-II of Figure 1.
  • FIG. 1 shows a pipe 1 in longitudinal view, which pipe is engaged by clamping means at its end.
  • Said clamping means comprise clamping members 2, which can be moved outwardly into abutment against the inner wall 3 of pipe 1.
  • each clamping member 2 comprises an oblique sliding surface 4, which abuts against a sliding surface 5 formed on an annular pushing member 6.
  • Clamping members 2 are movably provided on disc 7, which can be moved in vertical direction, from the top to the bottom in Figure 1, and vice versa, in order to move the clamping members 2 with their sliding surfaces 6 over the sliding surfaces 5 of annular pushing member 6. It will be apparent that upward movement of disc 7 will cause clamping members 2 to move outwardly.
  • the clamping means are furthermore provided with a radial flange 8, by which the clamping means are supported on the end of pipe 1.
  • Flange 8 is thereby provided with an annular stop surface, which abuts against the circular edge of pipe 1.
  • Disc 7 is connected by means of a piston rod 9 to piston 10, which can move within a cylinder, wherein a cylinder space 11 is present above piston 10 and a cylinder space 12 is present under piston 10, which cylinder space 12 extends round piston rod 9.
  • the supply and discharge of fluid to and from cylinder space 11 takes place via a pipe 13, and the supply and discharge of fluid to and from cylinder space 12 takes place via through- flow opening 14.
  • piston 10, and thus disc 7, can be moved up by supplying fluid to cylinder space 12, and down by supplying fluid to cylinder space 11. This movement causes the clamping members 2 to move obliquely outwards/upwards, until they clampingly engage the inner wall 3 of pipe 1.
  • the clamping means are placed on pipe 1 when piston 10 has been moved downwards to such an extent that the clamping members 2 have moved inwards, that is, towards each other.
  • flange 8 abuts against pipe 1
  • hydraulic fluid is supplied to cylinder space 12 via through-flow 6 opening 14, so that piston 10, and thus disc 7, will move in upward direction. Fluid is thereby discharged from cylinder space 11 via pipe 13.
  • Disc 7 is moved upwards until clamping members 2 clampingly abut against the inner wall 3 of pipe 1.
  • the vibrating device (not shown) , which is positioned above the clamping means in Figure 1, can drive pipe 1 while vibrating said pipe, so that it can be inserted into the ground .
  • Figure 1 is a cross-sectional view along line II-II of Figure 1.
  • Figure 2 shows the piston rod 9 surrounded by an annular cylinder space 12, which is enclosed by cylinder wall 15.
  • Surrounding cylinder wall 15 is annular pushing member 6, which pushing member 6 is provided with four sliding surfaces 5, against which clamping members 2 abut.
  • Each clamping member 2 is provided with two convexly curved engaging surfaces 16, so that the inner wall 3 of pipe 1 is engaged in eight, circumferentially spaced-apart places.
  • Figure 2 furthermore shows disc 7 in elevation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)

Abstract

A method and a device for inserting an elongated object (1) which is provided with a recess at one end into the ground in substantially vertical direction. A driving device is attached to said object (1) by clamping means (2). The clamping means (2) extend into said recess formed in the end of said object (1) and clampingly engage the object (1) on the wall (3) of the recess. The elongated object may be a pipe (1), which is inserted into the ground while being vibrated.

Description

DEVICE AND METHOD FOR INSERTING AN OBJECT INTO THE GROUND
The invention relates to a method for inserting an elongated object which is provided with a recess at one end into the ground, or removing it from the ground, in substantially vertical direction, wherein a driving device is attached to said object by clamping means.
Such a driving device may be a vibrating device, in which eccentrically rotating weights generate vibration. An object can be inserted into the ground by attaching such a vibrating device to said object, so that said object is inserted into the ground, either under the influence of its own weight or by exerting an additional downward force thereon, while being vibrated. While the term inserting an object into the ground is used herein, the same technique can be used for removing said object from the ground, and consequently it applies to both operations. When an object is being removed, an upward force rather than a downward force is exerted on the object during said vibration.
It is known to engage an object clampingly so as to attache a vibrating device to said object, for example by moving two clamping members together, so that part of the object is clampingly engaged therebetween. Since the clamping operation must meet stringent requirements, especially in the case of larger and/or heavier objects, that is, no relative movement must take place, not even in the case of very large, varying forces, such clamping means are voluminous and complicated. When an elongated object is to be inserted into the ground, the available space is not always sufficient to accommodate voluminous clamping means, especially when such an object is to be inserted entirely or nearly entirely into the ground, so that the clamping means must reach below the ground surface .
The object of the invention is to make it possible to use clamping means which can be designed to have limited dimensions, which operate reliably and which are capable of inserting an elongated object entirely into the ground .
In accordance with the method for inserting an elongated objected into the ground, the object is to that end engaged by clamping means, wherein said clamping means extend into a recess formed in the end of said object and clampingly engage the object on the wall of the recess. Preferably, an object whose circumferential shape is substantially constant along its length, such as a pipe, is inserted into the ground.
When the object is engaged, a number of clamping members are moved outwardly in radial direction with respect to the elongated object, until said clamping members abut against the wall of the recess. Since the clamping members move outwardly relative to each other thereby, said movement can be effected by having the clamping members push off against each another. A conical mandrel can thereby be moved between the clamping members in longitudinal direction with respect to the object, causing the clamping members to move in radial direction. This enables a simple construction of the clamping means of limited dimension, whilst it is nevertheless possible to exert large clamping forces. Preferably, three or four, or even more clamping members are used.
In one preferred embodiment, convexly curved engaging surfaces are present on the clamping members, which engaging surfaces clampingly engage the cylindrical inner wall of the recess in circumferentially spaced-apart places. By engaging the inner wall of the recess in several places, preferably six, or more preferably eight or more places, the object is prevented from being subjected to an excessive local force, which force may deform the object. In one preferred embodiment, each clamping member comprises two engaging surfaces, so that a total of eight engaging surfaces clampingly engage the inner wall of the recess when four clamping members are provided.
Preferably, the clamping means are also provided with a stop surface, which abuts against a transversely extending surface on the end of the elongated object. Preferably, the elongated object is a pipe, and said stop surface is annular, so that it is capable of abutment against the circular edge of the pipe.
A good clamping action both of the stop surface and of the clamping members can be obtained by moving the clamping members not only radially outwards upon clamping, but also towards the stop surface. As a result of this obliquely upward movement, also the stop surface of the clamping means is pressed firmly against the end of the object.
Preferably, the driving device is a vibrating device, in which eccentrically rotating weights generate vibration.
The invention furthermore relates to a driving device for inserting an elongated object into the ground, which device comprises means which are capable of engaging the object in a recess present at the end of said object, wherein the clamping members clampingly engage against the inner wall of said recess.
In one preferred embodiment, the device comprises a narrow portion, which extends between said clamping members and the part of the device which generates the driving movement, which narrow portion has a transverse 4 dimension which is substantially equal to, or smaller than, the transverse dimension of the object to be inserted into the ground. When the object to be inserted into the ground is a pipe, and the clamping means are provided with an annular stop surface which abuts against the circular edge of the pipe, the narrow portion has a transverse dimension which is smaller than the outside diameter of the pipe, so that the pipe can be inserted entirely into the ground, whilst the driving device will remain above the ground, of course. Preferably, the length of the narrow portion is larger than the transverse dimension thereof, preferably it is at least twice as large. In one preferred embodiment, said narrow portion has a length of more than one metre, so that the object can readily be moved to a position below the ground surface .
Further aspects of the invention and of the method, which can be used separately as well as in combination with each other, will be described by means of an embodiment and be defined in the claims.
In order to explain the invention more fully, an embodiment of clamping means which are capable of clampingly engaging a pipe will now be described.
Figure 1 is a longitudinal sectional view of the clamping means ; and
Figure 2 is a cross-sectional view along line II-II of Figure 1.
The figures are merely schematic representations of the device, wherein only relevant parts are shown.
Figure 1 shows a pipe 1 in longitudinal view, which pipe is engaged by clamping means at its end. Said clamping means comprise clamping members 2, which can be moved outwardly into abutment against the inner wall 3 of pipe 1. To that end, each clamping member 2 comprises an oblique sliding surface 4, which abuts against a sliding surface 5 formed on an annular pushing member 6.
Clamping members 2 are movably provided on disc 7, which can be moved in vertical direction, from the top to the bottom in Figure 1, and vice versa, in order to move the clamping members 2 with their sliding surfaces 6 over the sliding surfaces 5 of annular pushing member 6. It will be apparent that upward movement of disc 7 will cause clamping members 2 to move outwardly.
The clamping means are furthermore provided with a radial flange 8, by which the clamping means are supported on the end of pipe 1. Flange 8 is thereby provided with an annular stop surface, which abuts against the circular edge of pipe 1.
Disc 7 is connected by means of a piston rod 9 to piston 10, which can move within a cylinder, wherein a cylinder space 11 is present above piston 10 and a cylinder space 12 is present under piston 10, which cylinder space 12 extends round piston rod 9. The supply and discharge of fluid to and from cylinder space 11 takes place via a pipe 13, and the supply and discharge of fluid to and from cylinder space 12 takes place via through- flow opening 14. It will be apparent that piston 10, and thus disc 7, can be moved up by supplying fluid to cylinder space 12, and down by supplying fluid to cylinder space 11. This movement causes the clamping members 2 to move obliquely outwards/upwards, until they clampingly engage the inner wall 3 of pipe 1.
The clamping means are placed on pipe 1 when piston 10 has been moved downwards to such an extent that the clamping members 2 have moved inwards, that is, towards each other. When flange 8 abuts against pipe 1, hydraulic fluid is supplied to cylinder space 12 via through-flow 6 opening 14, so that piston 10, and thus disc 7, will move in upward direction. Fluid is thereby discharged from cylinder space 11 via pipe 13. Disc 7 is moved upwards until clamping members 2 clampingly abut against the inner wall 3 of pipe 1. Following that, the vibrating device (not shown) , which is positioned above the clamping means in Figure 1, can drive pipe 1 while vibrating said pipe, so that it can be inserted into the ground .
Figure 1 is a cross-sectional view along line II-II of Figure 1. Figure 2 shows the piston rod 9 surrounded by an annular cylinder space 12, which is enclosed by cylinder wall 15. Surrounding cylinder wall 15 is annular pushing member 6, which pushing member 6 is provided with four sliding surfaces 5, against which clamping members 2 abut. Each clamping member 2 is provided with two convexly curved engaging surfaces 16, so that the inner wall 3 of pipe 1 is engaged in eight, circumferentially spaced-apart places. Figure 2 furthermore shows disc 7 in elevation.

Claims

1. A method for inserting an elongated object which is provided with a recess at one end into the ground, or removing it from the ground, in substantially vertical direction, wherein a driving device is attached to said object by clamping means, characterized in that said clamping means extend into said recess and clampingly engage the object on the wall of said recess.
2. A method according to claim 1, characterized in that the circumferential shape of said object is substantially constant along its length, seen in cross- sectional view.
3. A method according to any one of the preceding claims, characterized in that said clamping means engage the object with clamping members which are moved outwardly in several directions, transversely to the object, into abutment against the wall of the recess.
4. A method according to claim 3, characterized in that convexly curved engaging surfaces are present on the clamping members, which engaging surfaces clampingly engage the cylindrical inner wall of the recess in circumferentially spaced-apart places.
5. A method according to any one of the preceding claims, characterized in that said clamping means also abut with a stop surface against a transversely extending surface at said end.
6. A method according to claim 5, characterized in that said clamping means comprise clamping members which are moved in the direction of said stop surface during the outward movement.
7. A method according to any one of the preceding claims, characterized in that said object has a cylindrical outer wall. 8
8. A method according to any one of the preceding claims, characterized in that the wall of said recess has a cylindrical inner surface.
9. A method according to any one of the preceding claims, characterized in that said object is a pipe.
10. A method according to any one of the preceding claims, characterized in that said driving device is a vibrating device, in which eccentrically rotating weights generate vibration.
11. A driving device for inserting an elongated object into the ground, or removing it from the ground, in substantially vertical direction, which device comprises means which are capable of engaging the object, characterized in that said clamping means can extend into a recess present at the end of said object, and in that said clamping means comprise clamping members, which are capable of clampingly engaging against the wall of said recess.
12. A device according to claim 11 , characterized in that said clamping means are provided with at least three, preferably at least four clamping members, which are capable of outward movement relative to each other.
13. A device according to claim 12, characterized in that said clamping members are provided with convexly curved engaging surfaces, which are capable of abutment against an inner wall of said recess in circumferentially spaced-apart places.
14. A device according to any one of the claims 11 - 13, characterized by a stop surface, which is capable of abutment against a transversely extending surface on said end of the object. 9
15. A device according to claim 14, characterized in that said clamping members are movable at an angle to the radial direction, and that outwardly, obliquely towards said stop surface.
16. A device according to claim 14 or 15, characterized in that said stop surface is substantially annular.
17. A device according to any one of the claims 11 - 16, characterized in that said device comprises a narrow portion, which extends between said clamping members and the part of the device which generates the driving movement, which narrow portion has a transverse dimension which is substantially equal to, or smaller than, the transverse dimension of the object to be inserted into the ground.
18. A device according to claim 17, characterized in that the length of said narrow portion is larger than the transverse dimension thereof, preferably it is at least twice as large.
19. A device according to any one of the . claims 11 - 18, characterized in that said driving device comprises a vibrating device.
PCT/NL1999/000227 1998-04-21 1999-04-20 Device and method for inserting an object into the ground WO1999054553A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU34451/99A AU3445199A (en) 1998-04-21 1999-04-20 Device and method for inserting an object into the ground

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1008952 1998-04-21
NL1008952A NL1008952C2 (en) 1998-04-21 1998-04-21 Apparatus and method for placing an object in the ground.

Publications (1)

Publication Number Publication Date
WO1999054553A1 true WO1999054553A1 (en) 1999-10-28

Family

ID=19766995

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL1999/000227 WO1999054553A1 (en) 1998-04-21 1999-04-20 Device and method for inserting an object into the ground

Country Status (3)

Country Link
AU (1) AU3445199A (en)
NL (1) NL1008952C2 (en)
WO (1) WO1999054553A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332376A (en) * 2015-11-27 2016-02-17 太原科技大学 Hydraulic manipulator pile-pulling clamping device and pile pulling machine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1111224A (en) * 1954-09-01 1956-02-23 Method and apparatus for removing casing from concrete piles, cast in the ground
DE2706094A1 (en) * 1977-02-12 1978-08-17 Tuenkers Kg Clamp head for withdrawing piles - has spring coupling with spring compression limited by buffers for shock protection (NL 15.8.78)

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1111224A (en) * 1954-09-01 1956-02-23 Method and apparatus for removing casing from concrete piles, cast in the ground
DE2706094A1 (en) * 1977-02-12 1978-08-17 Tuenkers Kg Clamp head for withdrawing piles - has spring coupling with spring compression limited by buffers for shock protection (NL 15.8.78)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
VERSTOV: "Flaschengreifer für das Rüttelziehen von Mantelrohren aus dem Boden", BAUMASCHINE UND BAUTECHNIK, vol. 20, no. 8, August 1973 (1973-08-01), pages 323, XP002087130 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105332376A (en) * 2015-11-27 2016-02-17 太原科技大学 Hydraulic manipulator pile-pulling clamping device and pile pulling machine
CN105332376B (en) * 2015-11-27 2017-06-20 太原科技大学 Hydraulic mechanical hand-lifting stake clamping device and pile-drawing machine

Also Published As

Publication number Publication date
NL1008952C2 (en) 1999-10-22
AU3445199A (en) 1999-11-08

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