EP1346157B1 - Vorrichtung mit mindestens einem ausleger- oder tragarm für mehrgliedrige kranartige ausleger, betonverteilermaste und dgl. - Google Patents

Vorrichtung mit mindestens einem ausleger- oder tragarm für mehrgliedrige kranartige ausleger, betonverteilermaste und dgl. Download PDF

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Publication number
EP1346157B1
EP1346157B1 EP01995711A EP01995711A EP1346157B1 EP 1346157 B1 EP1346157 B1 EP 1346157B1 EP 01995711 A EP01995711 A EP 01995711A EP 01995711 A EP01995711 A EP 01995711A EP 1346157 B1 EP1346157 B1 EP 1346157B1
Authority
EP
European Patent Office
Prior art keywords
segment
tubular segment
piston rod
end pieces
support arm
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.)
Expired - Lifetime
Application number
EP01995711A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1346157A2 (de
Inventor
Siegfried TRÜMPER
Horst Heckmann
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.)
Friedrich Wilhelm Schwing GmbH
Original Assignee
Friedrich Wilhelm Schwing 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 Friedrich Wilhelm Schwing GmbH filed Critical Friedrich Wilhelm Schwing GmbH
Publication of EP1346157A2 publication Critical patent/EP1346157A2/de
Application granted granted Critical
Publication of EP1346157B1 publication Critical patent/EP1346157B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
    • F15B15/08—Characterised by the construction of the motor unit
    • F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
    • F15B15/1423—Component parts; Constructional details
    • F15B15/1447—Pistons; Piston to piston rod assemblies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49249—Piston making
    • Y10T29/49252—Multi-element piston making

Definitions

  • the present invention relates to a device with at least one boom or support arm for crane-like boom, concrete distribution button, aerial work platforms, manipulators and the like. Multi-unit work units.
  • the invention further relates to a method for producing such a device, in particular a hydraulic differential cylinder used for the device.
  • the invention relates to the formation of a concrete placing boom of a movable or stationarily arranged concrete pump, wherein the mast consists of different mast sections, which are folded and possibly also telescopic, wherein the actuation of the mast arms takes place in particular by hydraulic differential Zylindex.
  • a generic device or a generic method is already off GB-A-2 140 362 known.
  • the object of the invention is to develop a device of the generic type such that by skillful design a weight reduction of the device via the hydraulic differential cylinder is made possible as a drive for the boom or support arms of multi-membered, crane-like arms, Betonverteilermasten and the like . be used and therefore be designed to save weight.
  • the hydraulic differential cylinders are already designed lightweight, characterized in that the piston rod is formed hollow.
  • the hollow piston rod in this case comprises a tubular segment and arranged at the ends of the tubular segment end pieces, in particular a piston-side, preferably frontally closed end piece, and a rod-side end piece.
  • the piston may optionally also be welded.
  • the tubular segment and the end pieces are formed either in one piece or connected to each other by cohesive connection. In the case of a cohesive connection of at least one of the end pieces with the tubular segment, it is expedient that at least on one side an end piece is welded.
  • the opposite end portion of the tube may be suitably formed by either welding or otherwise attaching another end, such as via threads or screws.
  • the opposite end portion may also be formed integrally with the tubular segment.
  • both ends of the piston rod formed as a tubular segment or pipe can be welded to corresponding end pieces.
  • the production of a cast blank with subsequent machining takes place from one end of the piston rod forth to form the piston rod hollow.
  • This is in particular a high-tensile material with a tensile strength of over 700 N / mm 2 used, from which the hollow piston rod can be made, resulting in a very high-duty piston rod.
  • notch stresses namely, due to the design, generally causes the wall thickness of the components of the hydraulic differential cylinders to be dimensioned correspondingly large. This is accompanied by a corresponding weight increase.
  • the wall thicknesses of the components of the hydraulic differential cylinder can be dimensioned correspondingly stronger moderate. This can bring considerable weight advantages, considering that very often long-stroke hydraulic cylinders with stroke lengths of 2.5 m and more must be used.
  • weld seam areas are reworked in particular on the inner tube side of the segment by machining and smoothing.
  • the accessibility of the tool is ensured by the fact that at least one of the end pieces has an opening through which the cutting tool and possibly the smoothing tool can be carried out and the machining can be carried out.
  • the invention is also generally applicable to hydraulic differential cylinders, which are used independently of the applications given above, but the preferred field of application is crane-type booms, concrete distributor booms and comparable manipulators.
  • an opening is provided at least at one end piece of the hollow piston rod a machining tool access to the cavity of the piston rod receives.
  • a machining tool access to the cavity of the piston rod receives.
  • integral hollow piston rods in which the cavity is made in the piston rod by machining a solid blank, it is advantageous to the blank by known shaping methods, such. As forging, casting or rolling or the like, since this allows easy production.
  • Fig. 1 shows a cross-sectional view of an embodiment of a hydraulic differential cylinder 1 according to the invention.
  • the hydraulic cylinder 1 in this case consists of the cylinder tube 3 and the displaceably arranged in the cylinder tube 3 piston rod 2, which is designed as a hollow piston rod 2.
  • the hollow piston rod 2 comprises a tubular segment 4, at the ends of the piston-side end piece 5 and the rod eye-side end piece 6 are provided, wherein the piston-side end piece 5 by screw 10 of the piston 11 is arranged.
  • the rod-side end piece 6 has two laterally projecting pipe sockets 13, 14 for connecting the piston rod to the mast arm or the like. As well as an opening 8, on the outside of the access to the interior of the hollow piston rod 2 is possible.
  • the cross-section of the piston wall 9 is uniformly smooth and even over the entire region of the tubular segment 4, wherein the transition to the end pieces 5, 6 is designed so that no notch effects occur. In particular, it is ensured by the provision of a sufficiently large radius of curvature in the transition of the tubular segment 4 to the piston-side end piece 5, which consists here of solid material, that no impermissible notch effects occur.
  • the hollow piston rod is made of welded joints 7 from the end pieces 5 and 6 and the tubular segment 4.
  • the welds 7, which are executed in the embodiment shown as V-seams, are designed by a mechanically machined post-processing so that there is a flat and smooth and flush transition at the interface between the parts to be joined. This avoids protruding parts of the welded joint, as in Fig. 2 could contribute to a notch effect.
  • A is in Fig. 2 the residual notch factor-free weld remaining after machining is designated after the mechanical processing, so that there the outer surface in the seam area is flush with the adjacent pipe surfaces.
  • Fig. 3 moreover shows a further embodiment of a hydraulic cylinder 1 according to the invention, in which the hollow piston rod 2 has a welded end piece 6, wherein the weld seams are denoted by 7. Moreover, the hollow piston rod 2 made of solid material and thus be made in one piece with the end piece 5, which is compressed in the illustrated embodiment.
  • the compression zone is designated 12. With 13, a thread is shown, which is applied to the outer surface of the end piece 5. A corresponding thread is provided on the piston 11, which can thus be screwed to the end piece 5.
  • the breakthrough for the tool access, which is designated 8 and allows access to the interior of the hollow piston rod 2, is provided here on the piston-side end piece 5.
  • FIGS. 4 and 5 show embodiments of a hydraulic differential cylinder 1, wherein the hollow piston rod is formed integrally.
  • a cast blank is preferably used, which in the embodiment according to FIG. 4 is machined from the upper end of the piston rod to the formation of the cavity.
  • the inner wall 15 of the rod-side end 6 and the tubular segment 4 is smoothed by machining to avoid the occurrence of notch effects.
  • the transition to the front side takes place by notch effects avoiding rounding 17th

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Actuator (AREA)
  • Jib Cranes (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Manipulator (AREA)
  • Shovels (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
EP01995711A 2000-12-22 2001-12-21 Vorrichtung mit mindestens einem ausleger- oder tragarm für mehrgliedrige kranartige ausleger, betonverteilermaste und dgl. Expired - Lifetime EP1346157B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10064365A DE10064365B4 (de) 2000-12-22 2000-12-22 Hydraulik-Zylinder
DE10064365 2000-12-22
PCT/EP2001/015222 WO2002052115A2 (de) 2000-12-22 2001-12-21 Vorrichtung mit mindestens einem ausleger- oder tragarm für mehrgliedrige kranartige ausleger, betonverteilermaste und dgl.

Publications (2)

Publication Number Publication Date
EP1346157A2 EP1346157A2 (de) 2003-09-24
EP1346157B1 true EP1346157B1 (de) 2008-12-10

Family

ID=7668513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01995711A Expired - Lifetime EP1346157B1 (de) 2000-12-22 2001-12-21 Vorrichtung mit mindestens einem ausleger- oder tragarm für mehrgliedrige kranartige ausleger, betonverteilermaste und dgl.

Country Status (12)

Country Link
US (1) US7007590B2 (ko)
EP (1) EP1346157B1 (ko)
JP (1) JP4008815B2 (ko)
KR (1) KR100618139B1 (ko)
CN (1) CN1278051C (ko)
AT (1) ATE417205T1 (ko)
BR (1) BR0116784B1 (ko)
DE (2) DE10064365B4 (ko)
ES (1) ES2204359T3 (ko)
HK (1) HK1056384A1 (ko)
TR (1) TR200301826T3 (ko)
WO (1) WO2002052115A2 (ko)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019108451B3 (de) 2019-04-01 2020-07-02 Schwing Gmbh Kolbenstangen-Einheit, Hydraulikzylinder und Knickmast
WO2021028528A1 (de) 2019-08-14 2021-02-18 Schwing Gmbh Kolbenstangen-einheit, hydraulikzylinder und knickmast

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT502871B1 (de) * 2005-11-17 2008-06-15 Schwing Gmbh F Hydraulikzylinder
DE102011018267A1 (de) * 2011-04-20 2012-10-25 Schwing Gmbh Vorrichtung und Verfahren zur Dickstoff-, insbesondere Betonförderung mit Drehwinkelmessung
US20130305703A1 (en) * 2012-05-17 2013-11-21 Taylor Scott Amarel Integrated Heat and Stirling Engine
GB2535173A (en) * 2015-02-10 2016-08-17 Qtrco Inc Piston rod-piston assembly for use in an actuator
CN105621305B (zh) * 2016-03-03 2018-09-28 郑州四维矿业机械有限责任公司 一种活塞及使用该活塞的千斤顶
CN105570261A (zh) * 2016-03-14 2016-05-11 中船第九设计研究院工程有限公司 一种可拆卸螺杆
DE102016007593A1 (de) * 2016-06-21 2017-12-21 Liebherr-Components Kirchdorf GmbH Verfahren zur Herstellung einer Kolbenstangen-Einheit sowie Kolbenstangen-Einheit
NL2020336B1 (en) * 2018-01-29 2019-08-02 Actuant Corp Piston and piston rod assembly manufacturing method.

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE884880C (de) * 1950-11-14 1953-07-30 Ferguson Ltd Harry Hydraulische Hubvorrichtung, insbesondere fuer an einem Schlepper angeordnete landwirtschaftliche Geraete
US3147671A (en) * 1962-12-04 1964-09-08 Gen Motors Corp Hydraulic actuator
FR2224659A1 (en) 1971-07-06 1974-10-31 Tadano Iron Works Safety mechanism for telescopic boom crane
US4058178A (en) * 1971-09-13 1977-11-15 Tadano Ironworks Co., Ltd. Hydraulic cylinder unit
US4003297A (en) * 1975-03-28 1977-01-18 Du-Al Manufacturing Company Hydraulic cylinder
GB2140362B (en) * 1983-03-17 1986-09-24 Harnischfeger Corp Mobile crane having oscillatory deflection reducing means
DE9307412U1 (de) * 1993-05-15 1993-07-22 Tess, Peter, Dipl.-Ing., 6747 Annweiler am Trifels Kolben-Zylinder-Einheit
DE9406613U1 (de) * 1994-04-20 1994-06-30 Festo Kg, 73734 Esslingen Arbeitszylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019108451B3 (de) 2019-04-01 2020-07-02 Schwing Gmbh Kolbenstangen-Einheit, Hydraulikzylinder und Knickmast
WO2020201289A2 (de) 2019-04-01 2020-10-08 Schwing Gmbh Kolbenstangen-einheit, hydraulikzylinder und knickmast
WO2021028528A1 (de) 2019-08-14 2021-02-18 Schwing Gmbh Kolbenstangen-einheit, hydraulikzylinder und knickmast
DE102019121884A1 (de) * 2019-08-14 2021-02-18 Schwing Gmbh Kolbenstangen-Einheit, Hydraulikzylinder und Knickmast

Also Published As

Publication number Publication date
KR100618139B1 (ko) 2006-08-31
ES2204359T3 (es) 2009-05-05
HK1056384A1 (en) 2004-02-13
CN1488041A (zh) 2004-04-07
TR200301826T3 (tr) 2004-01-21
BR0116784A (pt) 2004-03-09
DE10064365B4 (de) 2010-12-16
EP1346157A2 (de) 2003-09-24
DE50114572D1 (de) 2009-01-22
ES2204359T1 (es) 2004-05-01
US7007590B2 (en) 2006-03-07
US20040151544A1 (en) 2004-08-05
WO2002052115A2 (de) 2002-07-04
JP4008815B2 (ja) 2007-11-14
CN1278051C (zh) 2006-10-04
DE10064365A1 (de) 2002-07-04
WO2002052115A3 (de) 2002-12-12
JP2004524243A (ja) 2004-08-12
BR0116784B1 (pt) 2011-10-18
KR20030072367A (ko) 2003-09-13
ATE417205T1 (de) 2008-12-15

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