US20110272171A1 - Linear guide for the falling weight of a pile hammer - Google Patents

Linear guide for the falling weight of a pile hammer Download PDF

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Publication number
US20110272171A1
US20110272171A1 US13/125,349 US200913125349A US2011272171A1 US 20110272171 A1 US20110272171 A1 US 20110272171A1 US 200913125349 A US200913125349 A US 200913125349A US 2011272171 A1 US2011272171 A1 US 2011272171A1
Authority
US
United States
Prior art keywords
sliding
elements
linear guide
guide according
bearing housing
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
US13/125,349
Other languages
English (en)
Inventor
Dieter Kempass
George Fedosejeves
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Menck GmbH
Original Assignee
Menck GmbH
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 Menck GmbH filed Critical Menck GmbH
Assigned to MENCK GMBH INDUSTRIEGEBIET MOORKATEN reassignment MENCK GMBH INDUSTRIEGEBIET MOORKATEN ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FEDOSEJEVS, GEORGE, KEMPASS, DIETER
Publication of US20110272171A1 publication Critical patent/US20110272171A1/en
Abandoned legal-status Critical Current

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Classifications

    • 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
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/14—Components for drivers inasmuch as not specially for a specific driver construction
    • 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
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • 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
    • E02D7/02—Placing by driving
    • E02D7/06—Power-driven drivers
    • E02D7/08—Drop drivers with free-falling hammer

Definitions

  • the invention relates to a linear guide for the falling weight of a pile hammer, having at least one bearing housing at least partially enclosing the falling weight.
  • pile hammers are used in foundation works for driving piles into the ground, in particular into the bed of a body of water.
  • a falling weight is periodically lifted and dropped in order to generate ram strokes which drive the pile into the subsoil.
  • the falling weight as such is guided in a linear guide in which it can perform linear up and down movements in the axial direction.
  • the known pile hammers have linear guides made of metal and require lubricants so that the falling weight can be guided in its vertical movement with as little friction and wear as possible. During pile-driving under water, the lubricants can get into the water and contaminate it.
  • the object of the invention is to specify a linear guide of the type mentioned above for the falling weight of a pile hammer which operates without a lubricant.
  • At least one bearing housing is provided with sliding elements contacting the falling weight in order to guide the weight, and the sliding elements can be installed and removed while the falling weight is installed.
  • a linear guide with sliding elements can be operated without a lubricant, but has to take account of the fact that the sliding elements wear out during long periods of operation, in particular when the sliding elements consist of plastic. If the plastic sliding elements are simply arranged between the falling weight and a bearing housing, the replacement of worn sliding elements by new sliding elements would only be possible with great effort.
  • the falling guide would, in particular, have to be removed from the bearing housing. This is considerably time-consuming and represents an economic disadvantage because the pile hammer is not available for pile-driving while the sliding elements are being replaced.
  • the invention therefore, provides that the sliding elements can be installed and removed with the falling weight installed. This results in a significant economic advantage because the sliding elements can be replaced much more quickly without removing and installing the falling weight than according to the prior art.
  • a first embodiment of the invention provides that the bearing housing has several installation openings respectively going from the outer side to the inner side facing the falling weight, the openings being distributed over the circumference thereof, and in each of which a sliding element is arranged, and which can each be closed from the outer side with a supporting element.
  • the sliding elements are slid through the installation opening until they contact the falling weight.
  • the installation opening is then closed by the supporting element which supports the sliding element from the outer side and presses it onto the falling weight.
  • the lateral forces required for guiding the falling weight are transferred to the supporting elements via the sliding elements and thus to the bearing housing.
  • the circumferential surfaces of the sliding elements and of the installation openings at least have a cylindrical shape in sections, the front of the sliding elements being adjusted to the shape of the circumferential surface of the sliding element.
  • the falling weight usually has a cylindrical shape, i.e. it has a cylindrical circumferential surface.
  • the front of the sliding element then has a complementary shaped sliding surface which contacts the cylindrical circumferential surface of the falling weight in the installed state of the sliding element. The falling weight can thus move unhindered in the vertical direction, constantly being guided by the entire sliding surface of the sliding element.
  • the invention can, however, also be used if the falling weight has different shapes, for example an oval or square cross-section.
  • the sliding surfaces of the sliding elements are given a different curvature which is adapted to the falling weight.
  • the sliding surfaces of the sliding elements can be arranged as flat surfaces.
  • the arrangement of the circumferential surfaces of the sliding elements is advantageously determined by those of the installation openings.
  • the installation openings can easily be designed as bores, this results in a special advantage for the cylindrical shape of the installation openings and of the circumferential surfaces of the sliding elements.
  • the invention is further improved in that the supporting elements have a central projection and the sliding elements are provided with a central perforation so that they can be attached to the projection of the supporting elements. In this way, the position of the sliding elements relative to the supporting elements can be fixed such that mounting the sliding elements in a tilted or incorrect position is avoided.
  • An embodiment of the invention is proposed such that the sliding elements or the supporting elements are provided with an elastic compensation element configured transversely to the direction of movement of the falling weight. Small differences in length can be compensated with the compensation element, in particular those occurring due to wear of the sliding elements during operation.
  • the installation is, on the one hand, facilitated because an attached sliding element cannot inadvertently drop, and, on the other hand, the position of the sliding elements relative to the supporting elements is fixed, in particular with respect to the rotation about an axis arranged transversely to the direction of movement of the falling weight.
  • the sliding elements are provided with screw threads on their side facing the supporting elements and/or the supporting elements have bores for the passage of attachment screws, at least one sealing element to prevent water from penetrating being preferably provided between at least one sliding element and the associated supporting element.
  • the sealing element which can, for example, be configured as an O-ring, prevents water from penetrating into the linear guide according to the present invention. Leakage of, for example, lubricant from inside the linear guide into the body of water, is also prevented.
  • the feature that the supporting elements have bores arranged radially outside the sliding elements for the passage of attachment screws, which can be screwed into associated threads on the bearing housing, serves the fixation of the supporting elements with respect to the bearing housing, in particular also for the fixation in the rotational direction according to both last mentioned versions of the embodiment, and thus, finally, for the fixation of the correct installation position of the sliding elements with respect to the bearing housing and to the falling weight.
  • a second exemplary embodiment of the invention provides that the bearing housing has at least one installation opening that is accessible from its outer side and that can preferably be closed, through which a ribbon-shaped sliding element can be inserted tangentially to the falling weight, the bearing housing being preferably provided on its inner side with a groove following the circumference of the falling weight for accommodating the ribbon-shaped sliding element.
  • the ribbon-shaped sliding element is guided through the groove such that a worn sliding element can, for example, be pulled out through the installation opening, and a new sliding element can be inserted tangentially to the guiding element.
  • the groove prevents the displacement of the ribbon-shaped sliding element in the direction of movement of the falling weight.
  • An arrangement of this second exemplary embodiment of the invention provides that the ribbon-shaped sliding element consists of interconnected sliding elements.
  • the sliding elements as such are sufficiently rigid to resist the large forces required for guiding the falling weight, whereas the mobility required for inserting the ribbon-shaped sliding element through the installation opening is ensured by the interconnection of the sliding elements.
  • the sliding elements have protruding moldings on one side and indentations on the opposite side which are intended for accommodating the protruding moldings of an adjacent sliding element such that an interlocking connection is possible.
  • the sliding elements preferably consist of a polymer material and are produced by means of injection molding. If necessary, two or more types of sliding elements consisting of two or more different materials can, however, be combined in order to improve the function of the sliding element.
  • the sliding element then consists of sections periodically arranged one behind the other, which are formed by two or more different types of sliding elements.
  • the bearing housing has two opposite installation openings through with a ribbon-shaped sliding element can be inserted.
  • Each ribbon-shaped sliding element thus just encloses half of the circumference of the falling weight.
  • the cost of two ribbon-shaped sliding elements is relatively low. The cost would only be smaller if a single ribbon-shaped sliding element were arranged. It would then, however, have to enclose the falling weight over a circumferential area of more than 280° in order to achieve similar good results in guiding the falling weight. Such a sliding element would, therefore, be very long and the insertion particularly difficult during installation.
  • the installation openings can each be closed by means of a cover, which can preferably be attached to the bearing housing by means of screws, the ribbon-shaped sliding element is prevented from sliding out and in addition, dirt is prevented from penetrating into the inner space.
  • FIG. 1 shows a guide tube with two bearing housings of the linear guide according to the present invention a) in a top view and b) in a cut view;
  • FIG. 2 shows a perspective view of the bearing housing in a first embodiment with removed sliding elements
  • FIG. 3 shows the same bearing housing as in FIG. 2 , but in a top view
  • FIG. 4 shows a perspective view of the same bearing housing with installed sliding elements
  • FIG. 5 shows a top view of a falling weight with contacting sliding elements without bearing housing
  • FIG. 6 shows a bearing housing in a second embodiment of the invention a) in a perspective view and b) in a cut view;
  • FIG. 7 shows a perspective view of a sliding element of a ribbon-shaped sliding element
  • FIG. 8 shows a perspective view of the ribbon-shaped sliding element according to the second embodiment of the invention.
  • a falling weight 1 is apparent from FIG. 1 , which is guided movably in the vertical direction 2 inside a guide tube 3 .
  • the guide tube 3 is provided with two bearing housings 4 , each enclosing the guide tube 3 , and whose sections 3 a, 3 b, 3 c jointly connect to the guide tube 3 .
  • the connection of sections 3 a, 3 b, 3 c to one another is carried out via flanges at the bearing housings 4 which are, in particular, apparent from FIG. 2 .
  • the bearing housing 4 is provided with sliding elements 5 made of plastic which, in the installed state, are arranged on the inner side of four installation openings 6 .
  • the four installation openings 6 are arranged distributed in opposite pairs and spaced apart by 90° each over the circumference of the bearing housing 4 .
  • the four sliding elements 5 are fixed in the four installation openings 6 by means of four supporting elements 7 .
  • the sliding elements 5 have a cylindrical circumferential surface 8 which is accommodated and supported in a cylindrical inner surface 9 of the installation openings 6 arranged in a complementary manner.
  • the front of the sliding elements 5 is arranged as a sliding surface 10 and adjusted for contacting a circumferential surface 11 of the falling weight 1 .
  • the circumferential surface 11 of the falling weight 1 is a cylindrical surface and the sliding surface 10 of the sliding elements 5 is shaped in a complementary manner such that the sliding elements 5 substantially contact the circumferential surface 11 of the falling weight 1 with all its sliding surface 10 and securely guide the falling weight 1 in its movement in the vertical direction 2 .
  • each of the supporting elements 7 has a central projection 12 .
  • each of the sliding elements 5 has a central perforation 13 by means of which they can be attached to the projection 12 of the supporting elements 7 .
  • each of the sliding elements 5 has four cylindrical projections 14 on their side facing the supporting element 7 which are used for attaching the sliding elements 5 to the supporting element 7 .
  • the supporting elements 7 are provided with four bores 15 which are used for accommodating the cylindrical projections 14 of the sliding elements 5 .
  • the cylindrical projections 14 have threads for respectively screwing in four attachment screws 16 from the outer side of the supporting elements 7 .
  • the system can be provided with a seal, by means of an O-ring, for example.
  • the supporting elements 7 as such have a circumferential flange 17 protruding outward which is provided with eight bores 18 for the passage of eight screws 19 .
  • the screws 19 can respectively be screwed into eight tapped holes 20 on the bearing housing 4 , the supporting elements 7 being attached to the bearing housing 4 .
  • FIGS. 6 to 8 A second exemplary embodiment of the invention is shown in FIGS. 6 to 8 .
  • the bearing housing 24 has two installation openings 26 that are accessible from its outer side 21 , through which a ribbon-shaped sliding element 25 , as it is shown in FIG. 6 , can be inserted tangentially to the falling weight 1 .
  • the falling weight 1 has not been drawn in FIG. 6 for the sake of clarity.
  • the bearing housing 24 On its inner side 22 the bearing housing 24 has a groove 23 that follows the circumference of the falling guide 1 , which is not shown, that receives the ribbon-shaped sliding element 25 .
  • FIG. 6 shows one of the installation openings without the cover 27 and an installation opening 26 closed by means of the cover 27 .
  • a second sliding element 25 can obviously be inserted into the second installation opening 26 such that the falling weight 1 , which is not shown, is enclosed over the major part of its circumference by both sliding elements.
  • Both covers 27 are attached with screws 37 to the bearing housing 24 .
  • the bearing housing is provided with eight tapped holes 33 for screwing in the screws 32 .
  • FIG. 8 shows the design of the ribbon-shaped sliding element 25 with a plurality of sliding links 28 . All the sliding links 28 together form a sliding surface 13 on the side facing the falling weight 1 for guiding the falling weight 1 .
  • each of the individual sliding links 28 has two protruding moldings 29 which each engage in an interlocking manner with two indentations 31 of each of the adjacent sliding elements, as a result of which the interconnection of the sliding links 28 is ensured.
  • the sliding links 28 can, for example, be made of plastic by means of injection molding. A variety of polymer materials is suitable for this purpose.
  • the ribbon-shaped sliding elements 25 will then consist of sections periodically arranged one behind the other, each section consisting of two or more different types of sliding links 28 .

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)
  • Bearings For Parts Moving Linearly (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
US13/125,349 2008-10-22 2009-09-17 Linear guide for the falling weight of a pile hammer Abandoned US20110272171A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008052724.6 2008-10-22
DE102008052724A DE102008052724A1 (de) 2008-10-22 2008-10-22 Linearführung für den Fallkörper eines Rammhammers
PCT/EP2009/006712 WO2010046006A1 (fr) 2008-10-22 2009-09-17 Guidage linéaire pour la masse tombante d'un marteau batteur

Publications (1)

Publication Number Publication Date
US20110272171A1 true US20110272171A1 (en) 2011-11-10

Family

ID=41343287

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/125,349 Abandoned US20110272171A1 (en) 2008-10-22 2009-09-17 Linear guide for the falling weight of a pile hammer

Country Status (8)

Country Link
US (1) US20110272171A1 (fr)
EP (1) EP2342383B1 (fr)
JP (1) JP5393799B2 (fr)
CN (1) CN102203348B (fr)
AU (1) AU2009306788A1 (fr)
DE (1) DE102008052724A1 (fr)
DK (1) DK2342383T3 (fr)
WO (1) WO2010046006A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104389312B (zh) * 2014-11-26 2017-04-12 中国海洋石油总公司 一种替打短接装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620133A (en) * 1970-01-09 1971-11-16 Westinghouse Air Brake Co Heat dissipating bearing with wear compensating means
US4076081A (en) * 1974-12-10 1978-02-28 Van Kooten B.V. Pile driving device
US4109475A (en) * 1974-12-10 1978-08-29 Van Kooten B.V. Pile-driving ram and method of controlling the same
US5117924A (en) * 1991-01-15 1992-06-02 Berminghammer Corporation Limited Energy transfer unit for a pile driver

Family Cites Families (18)

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Publication number Priority date Publication date Assignee Title
US1183422A (en) * 1915-08-27 1916-05-16 R And G Company Cuff-button.
US1496536A (en) * 1922-10-05 1924-06-03 Oscar G Heyen Piston packing
DE1149306B (de) * 1958-10-25 1963-05-22 Demag Ag An einem Rammhammer zu befestigendes Fuehrungsgestell
DE1708528A1 (de) * 1968-01-12 1971-05-13 Conmaco Inc Pfahlramme
JPS4811604U (fr) * 1971-06-21 1973-02-09
NL164348C (nl) * 1974-12-10 1980-12-15 Kooten Bv V Heiblok.
NL160191C (nl) * 1975-12-09 1979-10-15 Hollandsche Betongroep Nv Inrichting voor het diep onder water in de bodem heien van een paal.
DE2627423A1 (de) * 1976-06-18 1977-12-29 Leonard Long Frederick Rammhammer und vorrichtung und verfahren zum betreiben eines rammhammers
DE2716701C3 (de) * 1977-04-15 1983-01-05 Koehring Gmbh, 2086 Ellerau Rammgerät
JPS5646653U (fr) * 1979-09-18 1981-04-25
WO1989008747A1 (fr) * 1988-03-16 1989-09-21 Menck Gmbh Dispositif de battage de pieux a entrainement excentrique
DE4028617C2 (de) * 1990-09-08 1994-07-14 Delmag Maschinenfabrik Hydraulikbär
DE69324695T2 (de) * 1993-12-20 2000-05-04 Beheermaatschappij Verstraeten In einem Rohr anwendbare Pfahlrammvorrichtung
JPH11117299A (ja) * 1997-10-08 1999-04-27 Nakatomi Kurimoto 基礎工事用機械におけるケーシングの振れ止め装置
JPH11303076A (ja) * 1998-04-27 1999-11-02 Nippon Sharyo Seizo Kaisha Ltd 油圧ドロップハンマ
GB9921755D0 (en) * 1999-09-16 1999-11-17 Roxbury Ltd Piling hammer
CN2510543Y (zh) * 2001-11-11 2002-09-11 田宗民 电动打桩机
DE10210979A1 (de) * 2002-03-13 2003-09-25 Delmag Gmbh & Co Kg Dieselbär, Hydraulikbär oder dgl.

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3620133A (en) * 1970-01-09 1971-11-16 Westinghouse Air Brake Co Heat dissipating bearing with wear compensating means
US4076081A (en) * 1974-12-10 1978-02-28 Van Kooten B.V. Pile driving device
US4109475A (en) * 1974-12-10 1978-08-29 Van Kooten B.V. Pile-driving ram and method of controlling the same
US5117924A (en) * 1991-01-15 1992-06-02 Berminghammer Corporation Limited Energy transfer unit for a pile driver

Also Published As

Publication number Publication date
JP2012506506A (ja) 2012-03-15
CN102203348B (zh) 2014-01-29
EP2342383B1 (fr) 2012-09-05
EP2342383A1 (fr) 2011-07-13
DE102008052724A1 (de) 2010-04-29
CN102203348A (zh) 2011-09-28
WO2010046006A8 (fr) 2011-05-26
JP5393799B2 (ja) 2014-01-22
DK2342383T3 (da) 2012-10-22
WO2010046006A1 (fr) 2010-04-29
AU2009306788A1 (en) 2010-04-29

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Legal Events

Date Code Title Description
AS Assignment

Owner name: MENCK GMBH INDUSTRIEGEBIET MOORKATEN, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KEMPASS, DIETER;FEDOSEJEVS, GEORGE;SIGNING DATES FROM 20110718 TO 20110722;REEL/FRAME:026633/0247

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION