EP0779237B1 - Mobile crane with an overload protection device - Google Patents
Mobile crane with an overload protection device Download PDFInfo
- Publication number
- EP0779237B1 EP0779237B1 EP96118130A EP96118130A EP0779237B1 EP 0779237 B1 EP0779237 B1 EP 0779237B1 EP 96118130 A EP96118130 A EP 96118130A EP 96118130 A EP96118130 A EP 96118130A EP 0779237 B1 EP0779237 B1 EP 0779237B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- jib
- angle
- outriggers
- overload protection
- protection device
- 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
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Classifications
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- 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
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- 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
- B66C23/90—Devices for indicating or limiting lifting moment
Definitions
- the invention relates to a crane vehicle with an overload protection device, with a boom articulated to its superstructure, preferably telescopic boom by one on this and the rocker arm articulated to the superstructure can be rocked with the opposite end regions of the long sides of the Extendable sliding rails arranged under the car their ends are provided with extendable support feet, and with a device measuring the angle of rotation of the boom, the Signals from a processing device of the overload protection device are supplied, in which the overload protection device generates a warning signal and / or stops crane operation, when the crane hits its stability-threatening limits or exceeds.
- 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, 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 sliding pillars and support feet are defined as a square the safety of the crane is greatest when the boom is heading of the most extended sliding beam.
- When retracted Sliding bars with extended support feet ensure stability in Longitudinal direction of the undercarriage is greater than in the direction of its transverse axis.
- the Overload protection must therefore always include the extension status of the sliding struts take into account what is problematic in that the stability is also changes with different extension lengths of the individual sliding beams.
- a crane is known from EP 0 420 625 A2, in which a safety device various parameters of the crane such as boom position, load and position the supports detected, a work area for the crane depending on the detected Presets parameters and stops the crane if it limits the working area reached.
- the boundaries of the work area for everyone certain load determined as a function of the angle of rotation of the boom make the best use of the stability of the crane. This takes into account how strong the crane boom rotates when it reaches the working area limits can be braked without the strength of the boom endangered or the load begins to rock.
- the object of the invention is to a crane vehicle of the type specified create, in which the overload protection device in simple and reliable Way takes into account the different extension lengths of the sliding beams.
- the of the rotation angle measuring device and the monitoring device of the Sliding bars according to the angle of rotation or the extension lengths of the sliding bars generated signals are from the processing device, the one Microcomputer contains, by comparison with the others determining the stability Processed values, the overload protection device a Crane operation stopping signal generated when the crane jeopardizes its stability Approaches or crosses borders.
- the 360 ° rotation angle of the boom in several rotation angle ranges is divided and that for each of these rotation angle ranges in this area located booms which result from the extension lengths of the sliding beams Stability values are stored in a table (bit map) from which the Processing unit according to the measured extension lengths of the sliding beams reads out the current stability values of the stand rectangle.
- each sliding beam only three Support positions in which it is bolted, namely once a retracted Position in which the support leg is in the area of the long side of the undercarriage a middle position and a fully extended position.
- a retracted Position in which the support leg is in the area of the long side of the undercarriage a middle position and a fully extended position.
- the computing work of the processing device can thereby be reduced even further, that the 360 ° angle of rotation of the boom to determine the stability values of the standing square is divided into four quadrants. For each of these four quadrants are the stability values for all possible extension lengths the sliding spars stored in such a way that for the entire quadrant are valid for these applicable smallest values.
- variable angular ranges are defined, in which the boom with the hanging on it Load can be turned safely. It is for each of these Angular ranges from the smallest rocking angle, the is permissible in this angular range. Also by this definition variable angle ranges will simplify the Bill created because not for every angle of the boom the permissible safety values must be taken into account.
- the sliding spars are expedient for each extended state determined four angular ranges, the limits of which are expedient through from the axis of rotation of the boom to the the support feet load-bearing ends of the sliding beams are drawn lines become.
- the reduction in the angular ranges has the advantage that the Crane operators need not fear in larger angular ranges, Approach an angular limit at which the overload safety device responds.
- the choice of larger angular ranges leads to that the higher loads, which are permissible in certain areas, for example by swiveling the boom to smaller ones Rocker angle, can not be used.
- FIG. 1 schematically shows an undercarriage 1 of a crane vehicle can be seen from the sliding spars 2 extended to different extents are at their ends support feet 3, by Hydraulic cylinder at right angles to the sliding bars in a vertical direction Are extendable towards the floor. To extend the Support spindles can also be provided.
- the Sliding beams 2 are located in the end areas of the two Long sides of the undercarriage 1 and are perpendicular to it Extendable median longitudinal plane.
- the sliding beams can be Extend in three stages, each in their Guides must be bolted. These levels correspond to one retracted position in which the support lengths of the sliding beams are smallest, a middle position and an extended position Position in which the support length is greatest.
- the two are Sliding bars 2 of the left side in their middle position, the upper sliding beam on the right in its most extended position Position and the sliding beam at the bottom right in its retracted position Position. From this extension pattern of the sliding struts and the resulting support lengths result in a Stand square that varies over the angle of rotation of the boom is able to absorb large luffing forces.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Description
Die Erfindung betrifft ein Kranfahrzeug mit einer Überlastsicherungseinrichtung, 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 den Drehwinkel des Auslegers messenden Einrichtung, deren Signale einer Verarbeitungseinrichtung der Überlastsicherungseinrichtung zugeführt werden, bei dem die Überlastsicherungseinrichtung ein Warnsignal erzeugt und/oder den Kranbetrieb stoppt, wenn der Kran seine Standsicherheit gefährdenden Grenzen anfährt oder überschreitet.The invention relates to a crane vehicle with an overload protection device, with a boom articulated to its superstructure, preferably telescopic boom by one on this and the rocker arm articulated to the superstructure can be rocked with the opposite end regions of the long sides of the Extendable sliding rails arranged under the car their ends are provided with extendable support feet, and with a device measuring the angle of rotation of the boom, the Signals from a processing device of the overload protection device are supplied, in which the overload protection device generates a warning signal and / or stops crane operation, when the crane hits its stability-threatening limits or exceeds.
Die Standsicherheit eines Kranfahrzeugs mit Teleskopausleger hängt neben der Größe der an dem Teleskopausleger hängenden Last unter anderem von dem Wippwinkel, 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 Sicherheit 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 zu dessen Querachse. Die Überlastsicherung muß daher immer auch den Ausfahrzustand der Schiebeholme berücksichtigen, was insofern problematisch ist, als sich die Standsicherheit auch bei unterschiedlicher Ausfahrlänge der einzelnen Schiebeholme ändert.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, 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 The sliding pillars and support feet are defined as a square the safety of the crane is greatest when the boom is heading of the most extended sliding beam. When retracted Sliding bars with extended support feet ensure stability in Longitudinal direction of the undercarriage is greater than in the direction of its transverse axis. The Overload protection must therefore always include the extension status of the sliding struts take into account what is problematic in that the stability is also changes with different extension lengths of the individual sliding beams.
Aus der EP 0 420 625 A2 ist ein Kran bekannt, bei dem eine Sicherheitseinrichtung verschiedene Parameter des Kranes wie Auslegerstellung, die Last und die Stellung der Stützen erfaßt, einen Arbeitsbereich für den Kran in Abhängigkeit der erfaßten Parameter vorgibt und den Kran stoppt, falls dieser die Grenzen des Arbeitsbereiches erreicht. Hierbei werden die Grenzen des Arbeitsbereiches für jede bestimmte Last als Funktion des Drehwinkels des Auslegers bestimmt, um die Standfestigkeit des Kranes bestmöglich auszunutzen. Hierbei wird berücksichtigt, wie stark der Kranausleger in seiner Drehbewegung bei Erreichen der Arbeitsbereichgrenzen abgebremst werden kann, ohne daß die Festigkeit des Auslegers gefährdet wird oder die Last zu schaukeln anfängt.A crane is known from EP 0 420 625 A2, in which a safety device various parameters of the crane such as boom position, load and position the supports detected, a work area for the crane depending on the detected Presets parameters and stops the crane if it limits the working area reached. Here, the boundaries of the work area for everyone certain load determined as a function of the angle of rotation of the boom Make the best use of the stability of the crane. This takes into account how strong the crane boom rotates when it reaches the working area limits can be braked without the strength of the boom endangered or the load begins to rock.
Aufgabe der Erfindung ist es, ein Kranfahrzeug der eingangs angegebenen Art zu schaffen, bei dem die Überlastsicherungseinrichtung in einfacher und zuverlässiger Weise die unterschiedlichen Ausfahrlängen der Schiebeholme berücksichtigt.The object of the invention is to a crane vehicle of the type specified create, in which the overload protection device in simple and reliable Way takes into account the different extension lengths of the sliding beams.
Erfindungsgemäß wird diese Aufgabe durch ein Kranfahrzeug gemäß dem Patentanspruch 1 gelöst. Bevorzugte Ausgestaltungen der Erfindung sind Gegenstand der weiteren Ansprüche.According to the invention, this object is achieved by a crane vehicle according to the patent claim 1 solved. Preferred embodiments of the invention are the subject of further claims.
Es ist also eine den Ausfahrzustand bzw. die Ausfahrlänge der Schiebeholme erfassende Überwachungseinrichtung vorgesehen, die der jeweiligen Ausfahrlänge der einzelnen Schiebeholme entsprechende Signale der Überlastsicherungseinrichtung zuführt, wobei die Verarbeitungseinrichtung der Überlastsicherungseinrichtung aus den Signalen der Überwachungseinrichtung für die Ausfahrlänge der Schiebeholme und aus den Signalen der den Drehwinkel des Auslegers messenden Einrichtung für jeden Drehwinkel des Auslegers die sich aus dem Ausfahrzustand der Schiebeholme ergebende Standsicherheit des Stand-Vierecks ermittelt. Die von der Drehwinkelmeßeinrichtung und der Überwachungseinrichtung der Schiebeholme entsprechend dem Drehwinkel bzw. den Ausfahrlängen der Schiebeholme erzeugten Signale werden von der Verarbeitungseinrichtung, die einen Mikrocomputer enthält, durch Vergleich mit den weiteren die Standsicherheit bestimmenden Werten verarbeitet, wobei die Überlastsicherungseinrichtung ein den Kranbetrieb stoppendes Signal erzeugt, wenn der Kran seine Standsicherheit gefährdenden Grenzen anfährt oder überschreitet.It is therefore one that detects the extension state or the extension length of the sliding struts Monitoring device provided that the respective extension length signals of the overload protection device corresponding to the individual sliding beams feeds, the processing device of the overload protection device from the signals of the monitoring device for the extension length of the Crossbars and from the signals of the measuring the angle of rotation of the boom Device for every angle of rotation of the boom resulting from the extended state the stability of the stand quadrant resulting in the sliding struts. The of the rotation angle measuring device and the monitoring device of the Sliding bars according to the angle of rotation or the extension lengths of the sliding bars generated signals are from the processing device, the one Microcomputer contains, by comparison with the others determining the stability Processed values, the overload protection device a Crane operation stopping signal generated when the crane jeopardizes its stability Approaches or crosses borders.
Um die Rechenleistung der Verarbeitungseinheit vermindern zu können, ist vorgesehen, daß der 360°-Drehwinkel des Auslegers in mehrere Drehwinkelbereiche aufgeteilt ist und daß für jeden dieser Drehwinkelbereiche bei sich in diesem Bereich befindliche Ausleger die sich aus den Ausfahrlängen der Schiebeholme ergebenden Standsicherheitswerte in einer Tabelle (bit-map) abgelegt sind, aus der die Verarbeitungseinheit entsprechend den gemessenen Ausfahrlängen der Schiebeholme die aktuellen Standsicherheitswerte des Stand-Vierecks ausliest.In order to be able to reduce the computing power of the processing unit, it is provided that that the 360 ° rotation angle of the boom in several rotation angle ranges is divided and that for each of these rotation angle ranges in this area located booms which result from the extension lengths of the sliding beams Stability values are stored in a table (bit map) from which the Processing unit according to the measured extension lengths of the sliding beams reads out the current stability values of the stand rectangle.
Bei dem Kranfahrzeug kann vorgesehen sein, daß jeder Schiebeholm nur drei Stützstellungen, in denen er jeweils verbolzt ist, besitzt, nämlich einmal eine eingefahrene Stellung, in der sich der Stützfuß im Bereich der Längsseite des Unterwagens befindet, eine mittlere Stellung und eine vollausgefahrene Stellung. Werden bei der Berechnung der Standsicherheit für jeden der vier Schiebeholme nur diese drei Stützstellungen berücksichtigt, lassen sich die Sicherheitswerte für jeden der Bereiche in einer übersichtlichen Tabelle ablegen.In the crane vehicle it can be provided that each sliding beam only three Support positions in which it is bolted, namely once a retracted Position in which the support leg is in the area of the long side of the undercarriage a middle position and a fully extended position. Become when calculating the stability for each of the four sliding beams only Taking these three support positions into account, the safety values for everyone the areas in a clear table.
Die Rechenarbeit der Verarbeitungseinrichtung läßt sich dadurch noch weiter verringern, daß der 360°-Drehwinkel des Auslegers zur Bestimmung der Standsicherheitswerte des Stand-Vierecks in vier Quadranten aufgeteilt ist. Für jeden dieser vier Quadranten werden die Standsicherheitswerte für alle möglichen Ausfahrlängen der Schiebeholme in der Weise abgelegt, daß für den gesamten Quadrant die für diesen geltenden kleinsten Werte gültig sind.The computing work of the processing device can thereby be reduced even further, that the 360 ° angle of rotation of the boom to determine the stability values of the standing square is divided into four quadrants. For each of these four quadrants are the stability values for all possible extension lengths the sliding spars stored in such a way that for the entire quadrant are valid for these applicable smallest values.
Nach einer besonders bevorzugten Ausführungsform der Erfindung ist vorgesehen, daß aus den gemessenen Werten des Drehwinkels des Auslegers und der Ausfahrlängen der Schiebeholme die im Sicherheitsbereich liegenden Winkelbereiche ermittelt werden, in denen der Ausleger bei vorgegebener Last bis zu einem vorgegebenen kleinsten Wippwinkel des Auslegers gedreht werden kann. Nach dieser Ausgestaltung werden also variable Winkelbereiche festgelegt, in denen der Ausleger mit der jeweils an diesem hängenden Last gefahrenfrei gedreht werden kann. Dabei wird für jeden dieser Winkelbereiche von dem kleinsten Wippwinkel ausgegangen, der in diesem Winkelbereich zulässig ist. Auch durch diese Festlegung variabler Winkelbereiche wird eine Vereinfachung bei der Rechnung geschaffen, da nicht für jede Winkelstellung des Auslegers die zulässigen Sicherheitswerte berücksichtigt werden müssen.According to a particularly preferred embodiment of the invention, that from the measured values of the angle of rotation of the boom and the extension lengths the sliding struts the angular ranges in the safety range be determined in which the boom with a given load up to a given smallest luffing angle of the boom can be rotated. To In this embodiment, variable angular ranges are defined, in which the boom with the hanging on it Load can be turned safely. It is for each of these Angular ranges from the smallest rocking angle, the is permissible in this angular range. Also by this definition variable angle ranges will simplify the Bill created because not for every angle of the boom the permissible safety values must be taken into account.
Zweckmäßigerweise werden für jeden Ausfahrzustand der Schiebeholme vier Winkelbereiche ermittelt, deren Grenzen zweckmäßigerweise durch die von der Drehachse des Auslegers zu den die Stützfüße tragenden Enden der Schiebeholme gezogenen Linien gebildet werden.The sliding spars are expedient for each extended state determined four angular ranges, the limits of which are expedient through from the axis of rotation of the boom to the the support feet load-bearing ends of the sliding beams are drawn lines become.
Nähert sich der Ausleger bei seinem Drehen der Grenze eines Winkelbereichs an, an den ein Winkelbereich mit einer geringeren zulässigen Last anschließt, wird das Stoppsignal gegeben.When the boom turns, it approaches the limit of an angular range to which an angular range with a smaller one permissible load, the stop signal is given.
Die Verringerung der Winkelbereiche hat den Vorteil, daß der Kranführer in größeren Winkelbereichen nicht befürchten muß, eine Winkelgrenze anzufahren, bei der die Überlastsicherung anspricht. Allerdings führt die Wahl größerer Winkelbereiche dazu, daß in diesen die ansich bereichsweise zulässigen höheren Lasten, beispielsweise durch Verschwenken des Auslegers auf kleinere Wippwinkel, nicht ausgenutzt werden können.The reduction in the angular ranges has the advantage that the Crane operators need not fear in larger angular ranges, Approach an angular limit at which the overload safety device responds. However, the choice of larger angular ranges leads to that the higher loads, which are permissible in certain areas, for example by swiveling the boom to smaller ones Rocker angle, can not be used.
Ein Ausführungsbeispiel der Erfindung wird nachstehend anhand der Zeichnung näher erläutert. In dieser zeigt
- Fig. 1
- eine Draufsicht auf den Unterwagen eines Kranfahrzeugs mit unterschiedlich weit ausgefahrenen Schiebeholmen in schematischer Darstellung,
- Fig. 2
- eine der Fig. 1 entsprechende Draufsicht auf einen Unterwagen mit eingefahrenen Schiebeholmen und
- Fig. 3
- eine der Fig. 1 entsprechende Draufsicht auf einen Unterwagen, bei dem die Schiebeholme der rechten Seite ausgefahren und die Schiebeholme der linken Seite eingefahren sind.
- Fig. 1
- 2 shows a plan view of the undercarriage of a crane vehicle with sliding rails extended to different extents,
- Fig. 2
- 1 corresponding plan view of an undercarriage with retracted sliding beams and
- Fig. 3
- 1 corresponding plan view of an undercarriage, in which the sliding bars on the right side are extended and the sliding bars on the left side are retracted.
Aus Fig. 1 ist schematisch ein Unterwagen 1 eines Kranfahrzeugs ersichtlich, aus dem Schiebeholme 2 unterschiedlich weit ausgefahren sind, die an ihren Enden Stützfüße 3 tragen, die durch Hydraulikzylinder rechtwinkelig zu den Schiebeholmen in vertikaler Richtung gegen den Boden ausfahrbar sind. Zum Ausfahren der Stützfüße können auch Gewindespindeln vorgesehen werden. 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 sliding spars 2 extended to different extents are at their ends support feet 3, by Hydraulic cylinder at right angles to the sliding bars in a vertical direction Are extendable towards the floor. To extend the Support spindles can also be provided. The Sliding beams 2 are located in the end areas of the two Long sides of the undercarriage 1 and are perpendicular to it Extendable median longitudinal plane.
In dem dargestellten Ausführungsbeispiel lassen sich die Schiebeholme in drei Stufen ausfahren, in denen sie jeweils in ihren Führungen verbolzt werden müssen. Diese Stufen entsprechen einer eingefahrenen Stellung, in der die Stützlängen der Schiebeholme am kleinsten sind, einer mittleren Stellung und einer ausgefahrenen Stellung, in der die Stützlänge am größten ist.In the illustrated embodiment, the sliding beams can be Extend in three stages, each in their Guides must be bolted. These levels correspond to one retracted position in which the support lengths of the sliding beams are smallest, a middle position and an extended position Position in which the support length is greatest.
Bei dem Ausführungsbeispiel nach Fig. 1 befinden sich die beiden Schiebeholme 2 der linken Seite in ihrer mittleren Stellung, der obere Schiebeholm der rechten Seite in seiner am weitesten ausgefahrenen Stellung und der Schiebeholm rechts unten in seiner eingefahrenen Stellung. Aus diesem Ausfahrmuster der Schiebeholme und den sich aus diesen ergebenden Stützlängen resultiert ein Stand-Viereck, das über den Drehwinkel des Auslegers unterschiedlich große Wippkräfte aufzunehmen vermag.In the embodiment of FIG. 1, the two are Sliding bars 2 of the left side in their middle position, the upper sliding beam on the right in its most extended position Position and the sliding beam at the bottom right in its retracted position Position. From this extension pattern of the sliding struts and the resulting support lengths result in a Stand square that varies over the angle of rotation of the boom is able to absorb large luffing forces.
In dem Stand-Viereck sind vier Winkelbereiche definiert worden, die sich aus den von der Drehachse 4 des Auslegers zu den Enden der Schiebeholme 2 bzw. durch die Stützlinien der Stützfüße 3 gezogenen Linien ergeben. Für jeden diese Winkelbereiche sind bestimmte zulässige Auslegermomente festgelegt worden, deren unterschiedliche Größe durch den Radius der die Winkelbereiche überspannenden Kreisbogen angedeutet ist. Dabei wird für jeden Winkelbereich der Einfachheit halber ein einheitliches zulässiges Auslegermoment definiert, das dem größten zulässigen Auslegermoment für diesen Winkelbereich entspricht.Four angular ranges have been defined in the standing square, which come from the axis of rotation 4 of the boom to the ends the sliding spars 2 or through the support lines of the support feet 3 drawn lines result. These are angular ranges for everyone certain permissible cantilever moments have been determined, their different Size by the radius of the angular ranges spanning arc is indicated. It is for everyone Angular range for the sake of simplicity a uniform permissible Boom moment defines the largest permitted boom moment for this angular range.
Die durch die unterschiedlichen Ausfahrlängen der Schiebeholme ergebenden unterschiedlichen Vierwinkelbereiche sowie die größten für jeden dieser Winkelbereiche zulässigen Auslegermomente sind in einer Traglasttabelle abgelegt, aus der diese Werte zur Verarbeitung in der Verarbeitungseinheit mit der Überlastsicherungseinrichtung ausgelesen werden können.Due to the different extension lengths of the sliding beams resulting different four-angle ranges as well as the largest allowable cantilever moments for each of these angular ranges are stored in a payload table from which these values are used Processing in the processing unit with the overload protection device can be read out.
Aus Fig. 2 ist der Zustand der Schiebeholme ersichtlich, der sich nach deren Einfahren ergibt. Aus Fig, 2 folgt, daß die Standsicherheit in Querrichtung des Unterwagens sehr viel geringer ist als in dessen Längsrichtung, in der die Standsicherheit genau so groß ist wie bei ausgefahrenen Schiebeholmen, jedoch nur über einen kleineren Winkelbereich.From Fig. 2 the state of the sliding beams can be seen, the arises after entering them. From Fig. 2 it follows that the Stability in the transverse direction of the undercarriage is much less is as in its longitudinal direction in which the stability is exactly the same size as when the sliding spars are extended, however only over a smaller angular range.
Aus Fig. 3 ist der Zustand ersichtlich, bei dem die Schiebeholme der rechten Seite vollständig ausgefahren und die der linken Seite eingefahren sind. Es ergibt sich somit ein relativ großer Winkelbereich, in dem der durch den Pfeil 5 symbolisierte Ausleger behinderungsfrei mit großem zulässigen Kippmoment gedreht werden kann.3 shows the state in which the sliding beams the right side fully extended and the left side are retracted. This results in a relatively large angular range, in which the boom symbolized by arrow 5 can be turned freely with a large permissible tilting moment can.
Claims (4)
- Crane vehicle with an overload protection device, having a jib (5) linked to its revolving superstructure, preferably a telescopic jib, which can be luffed by a luffing cylinder linked to the telescopic jib and the revolving superstructure, having extendable outriggers (2) which are arranged on the opposite end regions of the longitudinal sides of the travel unit (1) and are provided with extendable outrigger bases (3) at their ends, and having a device which measures the rotational angle of the jib and the signals of which are fed to a processing unit of the overload protection device, in which the overload protection device produces a warning signal and/or stops the crane operation if the crane approaches or exceeds limits which put its stability at risk, a monitoring device which detects the extension state or the extension length of the outriggers being provided, this monitoring device feeding signals corresponding to the respective extension length of the individual outriggers to the overload protection device, the processing unit of the overload protection device, from the signals of the monitoring device for the extension length of the outriggers and from the signals of the device which measures the rotational angle of the jib, determining the stability of the parking rectangle for each angle of rotation of the jib, this stability resulting from the extension state of the outriggers, and the 360° rotational angle of the jib being subdivided into a plurality of rotational-angle ranges, characterized in that, for each of these rotational-angle ranges, a uniform admissible jib moment which corresponds to the maximum admissible jib moment for this angle range is filed in a table (bit map), from which these values can be read out for processing in the processing unit.
- Crane vehicle according to Claim 1, characterized in that the 360° rotational angle of the jib (5) is subdivided into four quadrants for determining the stability values of the parking rectangle.
- Crane vehicle according to Claim 1, characterized in that the angle ranges which lie within the safety range and within which the jib (5) can be rotated at a predetermined load up to a predetermined minimum luffing angle of the jib (or at a maximum permissible moment) are determined from the measured values of the rotational angle of the jib (5) and the extension lengths of the outriggers (2).
- Crane vehicle according to Claim 3, characterized in that four angle ranges are formed for each extension state of the outriggers (2), the limits of which angle ranges consist of the lines drawn from the axis of rotation of the jib (5) to those ends of the outriggers (2) which carry the outrigger bases (3).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE29519928U DE29519928U1 (en) | 1995-12-15 | 1995-12-15 | Crane vehicle with an overload protection device |
| DE29519928U | 1995-12-15 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0779237A2 EP0779237A2 (en) | 1997-06-18 |
| EP0779237A3 EP0779237A3 (en) | 1997-07-09 |
| EP0779237B1 true EP0779237B1 (en) | 2001-10-10 |
Family
ID=8016782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP96118130A Expired - Lifetime EP0779237B1 (en) | 1995-12-15 | 1996-11-12 | Mobile crane with an overload protection device |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5887735A (en) |
| EP (1) | EP0779237B1 (en) |
| JP (1) | JPH09175785A (en) |
| KR (1) | KR100427506B1 (en) |
| DE (2) | DE29519928U1 (en) |
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|---|---|---|---|---|
| DE202006017724U1 (en) * | 2006-11-21 | 2008-04-03 | Liebherr-Werk Ehingen Gmbh | mobile crane |
| CN103043581A (en) * | 2012-12-21 | 2013-04-17 | 三一重工股份有限公司 | Turntable limiting device, turntable limiting device and engineering machinery |
| DE102011119654A1 (en) | 2011-11-29 | 2013-05-29 | Liebherr-Werk Ehingen Gmbh | Mobile work machine, in particular vehicle crane |
| CN109592567A (en) * | 2018-12-10 | 2019-04-09 | 中联重科股份有限公司 | Control system and method for engineering machinery and engineering machinery |
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|---|---|---|---|---|
| US6269635B1 (en) | 1999-01-20 | 2001-08-07 | Manitowoc Crane Group, Inc. | Control and hydraulic system for a liftcrane |
| JP3683571B2 (en) * | 2003-04-10 | 2005-08-17 | 古河機械金属株式会社 | Crane overturn prevention device |
| DE202005013310U1 (en) * | 2005-08-23 | 2007-01-04 | Liebherr-Hydraulikbagger Gmbh | Overload warning device for excavators |
| WO2007033273A2 (en) * | 2005-09-13 | 2007-03-22 | Romer Incorporated | Vehicle comprising an articulator of a coordinate measuring machine |
| DE102006031257A1 (en) * | 2006-07-06 | 2008-01-10 | Putzmeister Ag | Truck-mounted concrete pump with articulated mast |
| DE102008055625A1 (en) * | 2008-11-03 | 2010-05-06 | Putzmeister Concrete Pumps Gmbh | Mobile working machine with support arms |
| CN101746675B (en) * | 2009-12-31 | 2012-05-02 | 三一汽车制造有限公司 | Crane super lifting device, control system and control method thereof |
| DE102010056584B4 (en) | 2010-12-30 | 2018-03-29 | Asm Automation Sensorik Messtechnik Gmbh | Mobile work machine |
| AT511234B1 (en) * | 2011-04-08 | 2013-05-15 | Palfinger Ag | STAND SAFETY MONITORING OF A LOADING CRANE MOUNTED ON A VEHICLE |
| DE102012011871B4 (en) * | 2012-06-13 | 2020-09-03 | Liebherr-Werk Ehingen Gmbh | Procedure for monitoring crane safety and crane |
| AT13517U1 (en) * | 2012-10-19 | 2014-02-15 | Palfinger Ag | Safety device for a crane |
| DE102013201860A1 (en) * | 2013-02-05 | 2014-08-07 | Terex Cranes Germany Gmbh | Method for influencing a cable winch force acting on a cable drive and apparatus for carrying out such a method |
| FR3002799B1 (en) * | 2013-03-01 | 2015-07-31 | Haulotte Group | EFFORT MEASUREMENT CELL FOR AN ELEVATOR BOOM AND AN ELEVATOR NACELLE COMPRISING SUCH A CELL |
| DE102014008117A1 (en) * | 2014-06-03 | 2015-12-03 | Liebherr-Werk Ehingen Gmbh | Mobile work machine with support and extension for broadening the support base |
| IT201700037143A1 (en) * | 2017-04-05 | 2018-10-05 | Jacques Tranchero | Crane with sector anti-tipping system |
| US11142438B2 (en) | 2017-08-28 | 2021-10-12 | Manitowoc Crane Companies, Llc | Graphical working range diagrams for displaying allowable and projected loads |
| CN108892038B (en) * | 2018-06-07 | 2021-02-05 | 河南华东工控技术有限公司 | Remote wireless safety monitoring management system for hoisting machinery |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2230840C2 (en) * | 1972-06-23 | 1982-05-06 | Carl Metz Gmbh, 7500 Karlsruhe | Carrier vehicle with a support beam that can be changed in terms of its length and its position in space |
| FR2501390A1 (en) * | 1981-03-05 | 1982-09-10 | Camiva | MICROPROCESSOR CONTROL DEVICE FOR DEPLOYABLE ORIENTABLE SCALE OR SIMILAR ELEVATOR ARM |
| DE3420596C2 (en) * | 1984-06-01 | 1986-10-02 | Dr.-Ing. Ludwig Pietzsch Gmbh & Co, 7505 Ettlingen | Monitoring and control system for jib cranes |
| 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 |
| 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
- 1995-12-15 DE DE29519928U patent/DE29519928U1/en not_active Expired - Lifetime
-
1996
- 1996-11-12 DE DE59607876T patent/DE59607876D1/en not_active Expired - Lifetime
- 1996-11-12 EP EP96118130A patent/EP0779237B1/en not_active Expired - Lifetime
- 1996-12-12 KR KR1019960064722A patent/KR100427506B1/en not_active IP Right Cessation
- 1996-12-16 JP JP8335671A patent/JPH09175785A/en not_active Revoked
-
1997
- 1997-09-29 US US08/939,188 patent/US5887735A/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202006017724U1 (en) * | 2006-11-21 | 2008-04-03 | Liebherr-Werk Ehingen Gmbh | mobile crane |
| EP1925585A1 (en) | 2006-11-21 | 2008-05-28 | Liebherr-Werk Ehingen GmbH | Mobile crane |
| DE102011119654A1 (en) | 2011-11-29 | 2013-05-29 | Liebherr-Werk Ehingen Gmbh | Mobile work machine, in particular vehicle crane |
| DE102011119654B4 (en) * | 2011-11-29 | 2015-11-12 | Liebherr-Werk Ehingen Gmbh | Mobile work machine, in particular vehicle crane |
| CN103043581A (en) * | 2012-12-21 | 2013-04-17 | 三一重工股份有限公司 | Turntable limiting device, turntable limiting device and engineering machinery |
| CN103043581B (en) * | 2012-12-21 | 2016-04-06 | 三一重工股份有限公司 | A kind of turntable inhibiting device, method and construction machinery and equipment |
| CN109592567A (en) * | 2018-12-10 | 2019-04-09 | 中联重科股份有限公司 | Control system and method for engineering machinery and engineering machinery |
Also Published As
| Publication number | Publication date |
|---|---|
| KR100427506B1 (en) | 2004-07-14 |
| DE29519928U1 (en) | 1996-04-04 |
| KR970042227A (en) | 1997-07-24 |
| JPH09175785A (en) | 1997-07-08 |
| EP0779237A2 (en) | 1997-06-18 |
| DE59607876D1 (en) | 2001-11-15 |
| US5887735A (en) | 1999-03-30 |
| EP0779237A3 (en) | 1997-07-09 |
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