EP0779238B1 - Crane truck - Google Patents
Crane truck Download PDFInfo
- Publication number
- EP0779238B1 EP0779238B1 EP96118131A EP96118131A EP0779238B1 EP 0779238 B1 EP0779238 B1 EP 0779238B1 EP 96118131 A EP96118131 A EP 96118131A EP 96118131 A EP96118131 A EP 96118131A EP 0779238 B1 EP0779238 B1 EP 0779238B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sliding
- sliding beams
- stability
- beams
- crane
- 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.)
- Revoked
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/88—Safety gear
Definitions
- the invention relates to a method for a crane vehicle with one on its superstructure articulated boom, preferably telescopic boom, the by means of a luffing cylinder articulated on this and the superstructure is rockable, with at the opposite end regions the extendable sliding rails arranged on the long sides of the undercarriage, which have extendable support feet at their ends are, and with an overload protection device, the one Signal generated and / or crane operation stops when the crane approaches or exceeds its stability-threatening limits.
- the stability of a crane vehicle with a telescopic boom depends on the size of the load hanging on the telescopic boom among other things from the luffing angle and the extension length of the telescopic boom, from the deflection of the telescopic boom and in particular also from the angle of rotation of the superstructure with telescopic boom to the undercarriage and that through the support feet of the sliding spars defined stand square.
- the stability of the crane is greatest when the jib towards the most extended sliding beam points.
- With retractable struts with extended support feet is the stability in the longitudinal direction of the undercarriage larger than in the direction of its transverse axis.
- the overload protection must therefore always be in the extended state of the sliding beams take into account what can be problematic in that the stability even with different extension lengths of individual Sliding beam changes (see e.g. document EP 0 539 207 A1).
- the object of the invention is therefore to provide a method for a crane vehicle at the outset to create specified type in which the overload protection device the different in a simple and reliable manner Extension lengths of the sliding rails are taken into account.
- this task is performed on a crane vehicle solved type in that the overload protection device during the determination the limits to everyone's stability Crossbars with the shortest extension length of one of the crossbars going out.
- the invention is based on the finding that in the detection the boundaries that endanger the stability of the crane always and will remain reliably on the safe side if regardless of the different extension lengths of the sliding rails always from the smallest extension length of a sliding beam is assumed, which is then independent of the larger extension lengths the other sliding spars are also used, so that only a smaller standing square is taken into account than it may be due to larger extension lengths of individual Sliding beams are present.
- the safety against tipping only the smallest extension length of one of the sliding bars taken into account so that the required stability also is guaranteed if the boom in the direction of the sliding beam has the shortest extension length, the larger Stability in the direction of the sliding beams with larger ones Extend lengths are disregarded.
- one can monitor the bolting of the sliding beams Means can be provided which send a signal to a central Monitoring unit emits when a sliding beam is not bolted is.
- FIG. 1 schematically shows an undercarriage 1 of a crane vehicle can be seen from the sliding spars 2 which are extendable their ends support legs 3, which are supported by hydraulic cylinders perpendicular to the sliding beams in the vertical direction the floor can be extended.
- the sliding beams 2 are in the end regions of the two long sides of the undercarriage 1 and are extendable at right angles to its longitudinal median plane.
- the sliding beams can be Extend in three stages, each in their Guides must be bolted.
- the sliding beams are located 2 in its middle extended state.
- Fig. 1c are the sliding spars with their shortest extension length or in their retracted state, in which the support feet also rest on the floor to support them.
- the sliding spars are extended to different extents, one sliding beam each two in its shortest Extend position, or its retracted position.
- the stand quadrilateral is therefore how it is from the right 2 can be seen, starting from only one state, in which all sliding beams are in their retracted Position.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Vehicle Body Suspensions (AREA)
Description
Die Erfindung betrifft ein Verfahren für ein Kranfahrzeug mit einem an dessen Oberwagen angelenkten Ausleger, vorzugsweise Teleskopausleger, der durch einen an diesem und dem Oberwagen angelenkten Wippzylinder wippbar ist, mit an den einander gegenüberliegenden Endbereichen der Längsseiten des Unterwagens angeordneten, ausfahrbaren Schiebeholmen, die an ihren Enden mit ausfahrbaren Stützfüßen versehen sind, und mit einer Überlastsicherungseinrichtung, die ein Signal erzeugt und/oder den Kranbetrieb stoppt, wenn der Kran seine Standsicherheit gefährdenden Grenzen anfährt oder überschreitet.The invention relates to a method for a crane vehicle with one on its superstructure articulated boom, preferably telescopic boom, the by means of a luffing cylinder articulated on this and the superstructure is rockable, with at the opposite end regions the extendable sliding rails arranged on the long sides of the undercarriage, which have extendable support feet at their ends are, and with an overload protection device, the one Signal generated and / or crane operation stops when the crane approaches or exceeds its stability-threatening limits.
Die Standsicherheit eines Kranfahrzeugs mit Teleskopausleger hängt neben der Größe der an dem Teleskopausleger hängenden Last unter anderem von dem Wippwinkel und der Ausfahrlänge des Teleskopauslegers, von der Durchbiegung des Teleskopauslegers und insbesondere auch von dem Drehwinkel des Oberwagens mit Teleskopausleger zu dem Unterwagen und dem durch die Stützfüße der Schiebeholme definierten Stand-Viereck ab. Bezogen auf das durch die ausgefahrenen Schiebeholme und Stützfüße definierte Stand-Viereck ist die Standsicherheit des Krans am größten, wenn der Ausleger in Richtung des am weitesten ausgefahrenen Schiebeholms weist. Bei eingefahrenen Schiebeholmen mit ausgefahrenen Stützfüßen ist die Standsicherheit in Längsrichtung des Unterwagens größer als in Richtung von dessen Querachse. Die Überlastsicherung muß daher immer auch den Ausfahrzustand der Schiebeholme berücksichtigen, was insofern problematisch sein kann, als sich die Standsicherheit auch bei unterschiedlicher Ausfahrlänge einzelner Schiebeholme ändert (siehe z.B. Schrift EP 0 539 207 A1).The stability of a crane vehicle with a telescopic boom depends on the size of the load hanging on the telescopic boom among other things from the luffing angle and the extension length of the telescopic boom, from the deflection of the telescopic boom and in particular also from the angle of rotation of the superstructure with telescopic boom to the undercarriage and that through the support feet of the sliding spars defined stand square. Related to that by the extended sliding pillars and support feet defined stand square the stability of the crane is greatest when the jib towards the most extended sliding beam points. With retractable struts with extended support feet is the stability in the longitudinal direction of the undercarriage larger than in the direction of its transverse axis. The overload protection must therefore always be in the extended state of the sliding beams take into account what can be problematic in that the stability even with different extension lengths of individual Sliding beam changes (see e.g. document EP 0 539 207 A1).
Aufgabe der Erfindung ist es daher, ein Verfahren für ein Kranfahrzeug der eingangs angegebenen Art zu schaffen, bei der die Überlastsicherungseinrichtung in einfacher und zuverlässiger Weise die unterschiedlichen Ausfahrlängen der Schiebeholme berücksichtigt.The object of the invention is therefore to provide a method for a crane vehicle at the outset to create specified type in which the overload protection device the different in a simple and reliable manner Extension lengths of the sliding rails are taken into account.
Erfindungsgemäß wird diese Aufgabe bei einem Kranfahrzeug der eingangs angegebenen Art dadurch gelöst, daß die Überlastsicherungseinrichtung bei der Ermittlung der die Standsicherheit gefährdenden Grenzen für sämtliche Schiebeholme von der geringsten Ausfahrlänge eines der Schiebeholme ausgeht.According to the invention, this task is performed on a crane vehicle solved type in that the overload protection device during the determination the limits to everyone's stability Crossbars with the shortest extension length of one of the crossbars going out.
Die Erfindung geht von der Erkenntnis aus, daß bei der Erfassung der die Standsicherheit des Krans gefährdenden Grenzen immer und zuverlässig dann auf der sicheren Seite verblieben wird, wenn unabhängig von den unterschiedlichen Ausfahrlängen der Schiebeholme immer nur von der geringsten Ausfahrlänge eines Schiebeholms ausgegangen wird, die dann unabhängig von den größeren Ausfahrlängen auch den anderen Schiebeholmen zugrundegelegt wird, so daß nur ein kleineres Stand-Viereck berücksichtigt wird, als es möglicherweise aufgrund größerer Ausfahrlängen einzelner Schiebeholme vorliegt. Bei der Ermittlung der Kippsicherheit wird also nur die geringste Ausfahrlänge eines der Schiebeholme berücksichtigt, so daß die erforderliche Standsicherheit auch dann gewährleistet ist, wenn der Ausleger in Richtung des Schiebeholms mit der geringsten Ausfahrlänge weist, wobei die größeren Standsicherheiten in Richtung der Schiebeholme mit größeren Ausfahrlängen unberücksichtigt bleiben.The invention is based on the finding that in the detection the boundaries that endanger the stability of the crane always and will remain reliably on the safe side if regardless of the different extension lengths of the sliding rails always from the smallest extension length of a sliding beam is assumed, which is then independent of the larger extension lengths the other sliding spars are also used, so that only a smaller standing square is taken into account than it may be due to larger extension lengths of individual Sliding beams are present. When determining the safety against tipping only the smallest extension length of one of the sliding bars taken into account, so that the required stability also is guaranteed if the boom in the direction of the sliding beam has the shortest extension length, the larger Stability in the direction of the sliding beams with larger ones Extend lengths are disregarded.
Zusätzlich kann eine die Verbolzung der Schiebeholme überwachende Einrichtung vorgesehen sein, die ein Signal an eine zentrale Überwachungseinheit abgibt, wenn ein Schiebeholm nicht verbolzt ist.In addition, one can monitor the bolting of the sliding beams Means can be provided which send a signal to a central Monitoring unit emits when a sliding beam is not bolted is.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigen
- Fig. 1a bis 1c
- eine Draufsicht auf den Unterwagen eines Kranfahrzeugs mit unterschiedlich weit ausgefahrenen Schiebeholmen in schematischer Darstellung und
- Fig. 2a bis 2c
- die Erfassung von unterschiedlich weit ausgefahrenen Schiebeholmen für die Ermittlung der Standsicherheit in schematischer Darstellung.
- 1a to 1c
- a plan view of the undercarriage of a crane vehicle with differently extended sliding beams in a schematic representation and
- 2a to 2c
- the detection of differently extended sliding beams for the determination of stability in a schematic representation.
Aus Fig. 1 ist schematisch ein Unterwagen 1 eines Kranfahrzeugs
ersichtlich, aus dem Schiebeholme 2 ausfahrbar sind, die an
ihren Enden Stützfüße 3 tragen, die durch Hydraulikzylinder
rechtwinkelig zu den Schiebeholmen in vertikaler Richtung gegen
den Boden ausfahrbar sind. Die Schiebeholme 2 befinden sich in
den Endbereichen der beiden Längsseiten des Unterwagens 1 und
sind rechtwinkelig zu dessen Längsmittelebene ausfahrbar.1 schematically shows an undercarriage 1 of a crane vehicle
can be seen from the
In dem dargestellten Ausführungsbeispiel lassen sich die Schiebeholme in drei Stufen ausfahren, in denen sie jeweils in ihren Führungen verbolzt werden müssen. In the illustrated embodiment, the sliding beams can be Extend in three stages, each in their Guides must be bolted.
Aus Fig. 1a sind sämtliche Schiebeholme mit ihrer größsten Ausfahrlänge ersichtlich.From Fig. 1a are all sliding beams with their greatest extension length evident.
Bei dem Ausfahrzustand nach Fig. 1b befinden sich die Schiebeholme 2 in ihrem mittleren Ausfahrzustand.In the extended state according to FIG. 1b, the sliding beams are located 2 in its middle extended state.
Aus Fig. 1c sind die Schiebeholme mit ihrer geringsten Ausfahrlänge bzw. in ihrem eingefahrenen Zustand ersichtlich, in dem die Stützfüße ebenfalls zu ihrer Abstützung auf dem Boden aufruhen.From Fig. 1c are the sliding spars with their shortest extension length or in their retracted state, in which the support feet also rest on the floor to support them.
Aufgrund vorgegebener örtlicher Bedingungen kann es sich ergeben, daß einzelne Schiebeholme nicht bis auf ihre volle Länge ausgefahren werden können. Dies kann beispielsweise dadurch bedingt sein, daß Hindernisse, wie Bauwerke, im Wege sind oder kürzere Ausfahrlängen gewählt werden müssen, um einen genügend festen Boden zu erreichen.Due to the given local conditions, that individual sliding spars are not to their full length can be extended. This can be caused, for example, by this be that obstacles, such as structures, are in the way or shorter Extension lengths must be chosen to be sufficiently firm To reach the ground.
Aus der linken Spalte der Fig. 2 sind drei Zustände dargestellt, in denen die einzelnen Schiebeholme des Kranfahrzeugs unterschiedlich weit ausgefahren sind.Three states are shown from the left column of FIG. 2, in which the individual sliding beams of the crane vehicle differ are far out.
Bei dem Ausführungsbeispiel nach Fig. 2a sind die auf der linken Fahrzeugseite befindlichen Schiebeholme bis in ihre mittlere Stellung ausgefahren, während die auf der rechten Seite befindlichen Schiebeholme vollständig ausgefahren sind. Für die Ermittlung der Standfestigkeit wird daher nur von einem Zustand ausgegangen, bei dem sämtliche Schiebeholme nur auf ihre mittlere Stellung ausgefahren sind, wie es aus der rechten Skizze der Fig. 2a ersichtlich ist. In the exemplary embodiment according to FIG. 2a, these are on the left Pushing spars located on the vehicle side up to their middle Position extended while those on the right The sliding bars are fully extended. For the investigation the stability is therefore only assumed to be one condition in which all sliding beams only on their middle Are extended, as shown in the sketch on the right Fig. 2a can be seen.
Bei den beiden unteren Ausführungsbeispielen der Fig. 2 sind der linken Spalte wiederum die Schiebeholme unterschiedlich weit ausgefahren, wobei sich jeweils ein Schiebeholm zwei in seiner kürzesten Ausfahrstellung, bzw. seiner eingefahrenen Stellung befindet. Für die Ermittlung des bei der Sicherheitsbetrachtung zu berücksichtigenden Stand-Viereck wird daher, wie es aus der rechten Seite der Fig. 2 ersichtlich ist, nur von einem Zustand ausgegangen, bei dem sich sämtliche Schiebeholme in ihrer eingefahrenen Stellung befinden.In the two lower embodiments of FIG. 2 are the left column, the sliding spars are extended to different extents, one sliding beam each two in its shortest Extend position, or its retracted position. For the determination of the security assessment too Taking into account the stand quadrilateral is therefore how it is from the right 2 can be seen, starting from only one state, in which all sliding beams are in their retracted Position.
Claims (2)
- Method for a crane vehicle, having a jib, preferably a telescopic jib, which is linked to its revolving superstructure and can be luffed by a luffing cylinder linked to the jib and the revolving superstructure, having extendable sliding beams, which are arranged on the opposite end regions of the longitudinal sides of the travel unit and are provided with extendable outrigger bases at their ends, and having an overload safety device, which produces a signal and/or stops the crane operation if the crane approaches or exceeds its limits which put its stability at risk, and having a monitoring device, which detects the extended state of the sliding beams and supplies signals corresponding to the respective extended state of the individual sliding beams to the overload safety device, characterized in that the overload safety device, when the limits which put the stability at risk are being determined for all the sliding beams, takes the smallest extension length of one of the sliding beams as a basis.
- Method according to Claim 1, characterized in that a device monitoring the pinned fastening of the sliding beams is provided, and this device delivers a signal to a central monitoring unit if a sliding beam is not pinned.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29519871U DE29519871U1 (en) | 1995-12-14 | 1995-12-14 | Crane vehicle |
| DE29519871U | 1995-12-14 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0779238A1 EP0779238A1 (en) | 1997-06-18 |
| EP0779238B1 true EP0779238B1 (en) | 1999-09-15 |
Family
ID=8016742
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96118131A Revoked EP0779238B1 (en) | 1995-12-14 | 1996-11-12 | Crane truck |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US5813551A (en) |
| EP (1) | EP0779238B1 (en) |
| JP (1) | JPH09175786A (en) |
| DE (2) | DE29519871U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2674384A1 (en) | 2012-06-13 | 2013-12-18 | Liebherr-Werk Ehingen GmbH | Method for monitoring crane safety and crane |
| DE102012011871A1 (en) | 2012-06-13 | 2013-12-19 | Liebherr-Werk Ehingen Gmbh | Method for monitoring safety of crane, involves monitoring multiple safety criteria during crane operation, and computing and monitoring permissible specific threshold value for each criterion during crane operation based on parameter |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19857298C2 (en) * | 1998-12-14 | 2001-03-08 | Klaas Theodor Gmbh & Co | Roofing crane with tilt sensor |
| JP4199719B2 (en) * | 2004-10-18 | 2008-12-17 | 株式会社興研 | Automatic lifting control method and automatic lifting control system for mobile power generator |
| WO2007033273A2 (en) * | 2005-09-13 | 2007-03-22 | Romer Incorporated | Vehicle comprising an articulator of a coordinate measuring machine |
| DE102008036994A1 (en) | 2008-08-08 | 2010-02-11 | Ifm Electronic Gmbh | Sliding cross-beam for use in machine, for e.g. vehicle crane or excavator, has sliding box spar and extended sliding cross-beam, where optical distance measuring system is provided |
| US20130079974A1 (en) * | 2011-09-23 | 2013-03-28 | Manitowoc Crane Companies, Llc | Outrigger monitoring system and methods |
| DE102011119654B4 (en) * | 2011-11-29 | 2015-11-12 | Liebherr-Werk Ehingen Gmbh | Mobile work machine, in particular vehicle crane |
| DE202013003376U1 (en) | 2013-04-11 | 2013-05-22 | Hermann Paus Maschinenfabrik Gmbh | Mobile trailer crane |
| DE202013003375U1 (en) | 2013-04-11 | 2013-05-22 | Hermann Paus Maschinenfabrik Gmbh | Mobile trailer crane |
| IT202000006757A1 (en) * | 2020-03-31 | 2021-10-01 | Manitou Italia Srl | Telehandler simulator. |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3824578A (en) * | 1972-05-22 | 1974-07-16 | H Harders | Attitude indicator for load lifting apparatus and method |
| FR2501390A1 (en) * | 1981-03-05 | 1982-09-10 | Camiva | MICROPROCESSOR CONTROL DEVICE FOR DEPLOYABLE ORIENTABLE SCALE OR SIMILAR ELEVATOR ARM |
| JPS58212585A (en) | 1982-06-02 | 1983-12-10 | 日立建機株式会社 | Crane |
| FR2534643B1 (en) * | 1982-10-15 | 1986-12-26 | Bennes Marrel | LOAD STATE CONTROLLER WITH TORQUE CAPACITY LIMITER FOR A HYDRAULIC CIRCUIT, ESPECIALLY ON A CRANE |
| DE3605462A1 (en) * | 1986-02-24 | 1987-08-27 | Mo N Proizv Ob Str Dorozh Mash | METHOD FOR SECURING SAFE OPERATION OF SELF-DRIVING Jib Cranes, AND SYSTEM FOR CARRYING OUT THE SAME |
| US4833615A (en) * | 1986-10-15 | 1989-05-23 | A.G.A. Credit | System for the protection of an aerial device having a pivotable boom |
| JPH07115838B2 (en) * | 1989-02-13 | 1995-12-13 | 株式会社彦間製作所 | Crane turning control mechanism |
| JPH085623B2 (en) * | 1989-09-27 | 1996-01-24 | 株式会社神戸製鋼所 | Crane safety equipment |
| JP2564060B2 (en) * | 1991-10-24 | 1996-12-18 | 株式会社神戸製鋼所 | Safety equipment for construction machinery |
-
1995
- 1995-12-14 DE DE29519871U patent/DE29519871U1/en not_active Ceased
-
1996
- 1996-11-12 EP EP96118131A patent/EP0779238B1/en not_active Revoked
- 1996-11-12 DE DE59603061T patent/DE59603061D1/en not_active Revoked
- 1996-12-12 US US08/764,251 patent/US5813551A/en not_active Expired - Lifetime
- 1996-12-16 JP JP8335670A patent/JPH09175786A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2674384A1 (en) | 2012-06-13 | 2013-12-18 | Liebherr-Werk Ehingen GmbH | Method for monitoring crane safety and crane |
| DE102012011871A1 (en) | 2012-06-13 | 2013-12-19 | Liebherr-Werk Ehingen Gmbh | Method for monitoring safety of crane, involves monitoring multiple safety criteria during crane operation, and computing and monitoring permissible specific threshold value for each criterion during crane operation based on parameter |
| DE102012011871B4 (en) * | 2012-06-13 | 2020-09-03 | Liebherr-Werk Ehingen Gmbh | Procedure for monitoring crane safety and crane |
Also Published As
| Publication number | Publication date |
|---|---|
| US5813551A (en) | 1998-09-29 |
| DE59603061D1 (en) | 1999-10-21 |
| EP0779238A1 (en) | 1997-06-18 |
| JPH09175786A (en) | 1997-07-08 |
| DE29519871U1 (en) | 1996-03-21 |
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