EP1749790B1 - System to adjust a derricking jib crane - Google Patents
System to adjust a derricking jib crane Download PDFInfo
- Publication number
- EP1749790B1 EP1749790B1 EP06013345A EP06013345A EP1749790B1 EP 1749790 B1 EP1749790 B1 EP 1749790B1 EP 06013345 A EP06013345 A EP 06013345A EP 06013345 A EP06013345 A EP 06013345A EP 1749790 B1 EP1749790 B1 EP 1749790B1
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- EP
- European Patent Office
- Prior art keywords
- connection means
- crane
- boom
- piston
- adjustment
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- 230000000717 retained effect Effects 0.000 abstract 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
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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
- B66C23/82—Luffing gear
-
- 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
- B66C23/18—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 specially adapted for use in particular purposes
- B66C23/26—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 specially adapted for use in particular purposes for use on building sites; constructed, e.g. with separable parts, to facilitate rapid assembly or dismantling, for operation at successively higher levels, for transport by road or rail
- B66C23/34—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes
- B66C23/348—Self-erecting cranes, i.e. with hoisting gear adapted for crane erection purposes the erection being operated by jacks
Definitions
- the present invention relates to a crane with a boom adjustment system.
- Cranes are known in many different embodiments. Especially with fast-erecting cranes, it is known not only to use the boom in the horizontal position, but also to adjust the hook height in a steep position to improve. Serves a unit of adjusting and adjusting piston, wherein the adjusting piston is guided longitudinally displaceable in the adjusting cylinder.
- the adjusting cylinder is articulated to a support of the crane.
- the adjusting piston communicates with the guy rod, which in turn is articulated on the boom.
- a disadvantage of such cranes is that the operational adjustment of the boom is possible only in the region which is predetermined by the adjustment of the adjusting.
- the EP 0 733 584 A1 relates to a crane with a collapsible boom.
- the collapsible boom construction has guy rods and adjusting piston.
- the guy rods could have a plurality of spaced apart holes in an end region for length adjustment.
- the present invention has for its object to increase the adjustment of the boom and thus to allow a more flexible Kransch.
- the guy rod is attached in its first end portion to the boom and its second end portion is in communication with the adjusting piston, wherein the tie rod in its second end portion has a first and one of which spaced in the longitudinal direction of the guy rod second connecting means and / or wherein the adjusting piston has a first and a second connecting means spaced therefrom in the direction of movement of the adjusting piston, wherein the connecting means are designed such that the anchoring rod can be connected to the adjusting piston by means of the connecting means.
- the guy rod has two connecting means spaced apart in the longitudinal direction of the tie rod in its end region directed towards the adjusting piston and / or that the adjusting piston has two connecting means spaced apart in its direction of movement, so that different mounting positions can be realized and different angular ranges depending on the mounting position are adjustable, in which the boom is movable depending on the position of the adjusting piston.
- the connecting means are largely arbitrary.
- the connecting means are designed as holes or elongated holes or as bores and the like, in which a bolt is received for the purpose of connection. In this way, the adjusting piston and the tie rod can be easily connected.
- the connecting means are arranged such that the distance of the connecting means of the guy rod or the distance of the connecting means of the adjusting or the sum of both distances the maximum displacement, ie the stroke of the adjusting correspond. If this is the case, there is the advantage that the adjustment ranges of the arm adjoin one another in the case of different mounting positions, so that a comparatively large angular range can be fully utilized.
- both the boom and the adjusting piston on first and second connecting means results in this embodiment of the invention, the same boom position when the first connecting means of the guy rod is connected to the first connecting means of the adjusting piston and the adjusting piston is in an extended position, as if the second connecting means of the guy rod is connected to the second connecting means of the adjusting piston and the adjusting piston is in a retracted position.
- the second connection means are closer to the end region of the guy rod and the adjusting piston than the respective first connection means.
- the guy rod has in its second end region two spaced apart tabs, which have the first and second connecting means of the guy rod, wherein the distance of the tabs is selected so that the adjusting cylinder and / or the adjusting between the Latches can be received and pivoted.
- the connecting means are arranged such that the boom is in a first up position when the second connecting means communicate with each other and the adjusting piston is in the retracted position.
- the connecting means are arranged such that the boom is in a horizontal or substantially horizontal position, when the second connecting means communicate with each other and the adjusting piston is in the extended position.
- the connecting means are arranged such that the boom is in a horizontal or substantially horizontal position, when the second connecting means communicate with each other and the adjusting piston is in the extended position.
- the second connecting means communicate with each other and the adjusting piston is in the extended position.
- another position is conceivable instead of the horizontal position.
- the boom is in a second up position when the first connecting means are in communication and the adjusting piston is in the retracted position.
- the connecting means arranged such are that the boom is in a first up position when the first connecting means communicate with each other and the adjusting piston is in the extended position.
- the same or substantially the same position of the boom namely reach the first steep position when the second connecting means communicate with each other and the adjusting piston is retracted, as when the first connecting means communicate with each other and the adjusting piston is extended. If the adjustment ranges are adjacent to one another, a comparatively large adjustment range can be covered, the individual adjustment ranges depending on the mounting position of the tie rod.
- the first steep position has an inclination angle of approximately 20 ° and the second steep position has an inclination angle of approximately 40 °.
- the adjusting cylinder may be pivotally mounted on a support of the crane.
- Fig. 1 shows a section of a crane with boom 40, wherein the support 30 extends in the region of the boom foot. It is a fast-erecting crane whose boom 40 consists of at least two parts that are folded together in the transport state and are aligned with each other in the operating state.
- the guy rod 10 is secured with its first end portion.
- the guy rod 10 is pivotally connected to the adjusting piston of a piston-cylinder unit 20 in connection.
- the adjusting piston is received longitudinally displaceably movable in the adjusting cylinder between a retracted and an extended position.
- the adjusting cylinder is hinged to the end portion of the support 30.
- the guy rod 10 consists in its directed to the piston-cylinder unit 20 end portion of two parallel tabs 50, whose distance from one another is indicated by A.
- the distance A is selected so that the adjusting cylinder of the piston-cylinder unit 20 between the flaps 50 is pivotable.
- the tabs 50 both have a second slot 70 and a first slot 60.
- the elongated holes are spaced from each other in the longitudinal direction of the guy rod 10, wherein the slots 70 are facing the end portion of the guy rod 10 and the slots 60 in contrast have a greater distance from the end portion of the tie rod 10.
- the adjusting piston of the piston-cylinder unit 20 also has two holes 90 and 100 spaced apart in the longitudinal direction of the adjusting piston, wherein the holes 100 are spaced further from the end region of the piston than the holes 90, as shown Fig. 1 evident.
- An inventive crane with a system for boom adjustment can be operated in several different mounting positions.
- a first assembly position results when the tie rod 10 are fixed to the piston-cylinder unit 20 by means of a bolt 80 relative to each other, which are guided by the second holes 70, 90.
- This mounting position is in Fig. 2 left column shown.
- Steps 1) and 2) show the crane with pivoted second boom part with completely retracted adjusting piston (step 1)), wherein the first boom part is at an inclination angle of about 20 °. If the adjusting piston is fully extended, the angle of inclination is approx. 0 ° (step 2)).
- Steps 3) and 4) according to Fig. 2 left column show the crane in the ready state with the second boom part unfolded. As can be seen from step d), in this first mounting position, an operating range of the boom results in between 0 ° and 20 °. Step 3) shows the boom in the 0 ° position.
- Step 1 shows the crane with swung-in second boom part with fully extended adjusting piston (step 1)), wherein the first boom part is at an inclination angle of about 20 °.
- step 2 shows the crane with swung-in second boom part with fully extended adjusting piston (step 1)), wherein the first boom part is at an inclination angle of about 20 °.
- step 2 shows the crane with swung-in second boom part with fully extended adjusting piston (step 1)), wherein the first boom part is at an inclination angle of about 20 °.
- the angle of inclination is approx. 40 ° (step 2)).
- Steps 3) and 4) according to Fig. 2 right-hand column show the crane ready for operation with the second boom section folded out. As can be seen from step d) results in this second mounting position, an operating range of the boom in between 20 ° and 40 °. Step 3) shows the boom in the 40 ° position.
- Fig. 7 again shows a piston-cylinder unit 20 with about 90 mm outside diameter in the assembled state and as a single part.
- the piston has the spaced in the adjustment direction of the piston holes 90, 100, which are respectively arranged on two mutually parallel tabs of the piston.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Transportation (AREA)
- Jib Cranes (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft einen Kran mit einem System zur Auslegerverstellung.The present invention relates to a crane with a boom adjustment system.
Krane sind in zahlreichen unterschiedlichen Ausführungsformen bekannt. Insbesondere bei Schnelleinsatzkranen ist es bekannt, den Ausleger nicht nur in der waagrechten Position zu nutzen, sondern zur Verbesserung der Hakenhöhe auch in eine Steilstellung zu verstellen. Dazu dient eine Einheit aus Verstellzylinder und Verstellkolben, wobei der Verstellkolben in dem Verstellzylinder längsverschieblich geführt ist. Der Verstellzylinder ist an einer Stütze des Krans angelenkt. Der Verstellkolben steht mit der Abspannstange in Verbindung, die ihrerseits am Ausleger angelenkt ist. Bei einem vollständig ausgefahrenen Verstellkolben befindet sich der Ausleger in seiner waagrechten Stellung und bei vollständig eingefahrenem Verstellkolben befindet sich der Ausleger in seiner Steilstellung. Ein Nachteil derartiger Krane besteht darin, dass die betriebsmäßige Verstellung des Auslegers nur in dem Bereich möglich ist, der durch den Verstellweg des Verstellkolbens vorgegeben ist.Cranes are known in many different embodiments. Especially with fast-erecting cranes, it is known not only to use the boom in the horizontal position, but also to adjust the hook height in a steep position to improve. Serves a unit of adjusting and adjusting piston, wherein the adjusting piston is guided longitudinally displaceable in the adjusting cylinder. The adjusting cylinder is articulated to a support of the crane. The adjusting piston communicates with the guy rod, which in turn is articulated on the boom. In a fully extended adjusting the boom is in its horizontal position and with fully retracted adjusting the boom is in its up position. A disadvantage of such cranes is that the operational adjustment of the boom is possible only in the region which is predetermined by the adjustment of the adjusting.
Die
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, den Verstellbereich des Auslegers zu vergrößern und damit eine flexiblere Krannutzung zu ermöglichen.The present invention has for its object to increase the adjustment of the boom and thus to allow a more flexible Krannutzung.
Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Danach ist vorgesehen, dass die Abspannstange in ihrem ersten Endbereich an dem Ausleger befestigt ist und ihrem zweiten Endbereich mit dem Verstellkolben in Verbindung steht, wobei die Abspannstange in ihrem zweiten Endbereich ein erstes und ein davon in Längsrichtung der Abspannstange beabstandetes zweites Verbindungsmittel aufweist und/oder wobei der Verstellkolben ein erstes und ein davon in Bewegungsrichtung des Verstellkolbens beabstandetes zweites Verbindungsmittel aufweist, wobei die Verbindungsmittel derart ausgeführt sind, dass die Abspannstange mit dem Verstellkolben mittels der Verbindungsmittel verbindbar ist. Erfindungsgemäß ist somit vorgesehen, dass die Abspannstange in ihrem zu dem Verstellkolben gerichteten Endbereich zwei in Längsrichtung der Abspannstange beabstandete Verbindungsmittel aufweist und/oder dass der Verstellkolben zwei in dessen Bewegungsrichtung beabstandete Verbindungsmittel aufweist, so dass unterschiedliche Montagestellungen realisierbar sind und je nach Montagestellung auch unterschiedliche Winkelbereiche einstellbar sind, in die der Ausleger je nach Position des Verstellkolbens bewegbar ist.This object is solved by the features of claim 1. Thereafter, it is provided that the guy rod is attached in its first end portion to the boom and its second end portion is in communication with the adjusting piston, wherein the tie rod in its second end portion has a first and one of which spaced in the longitudinal direction of the guy rod second connecting means and / or wherein the adjusting piston has a first and a second connecting means spaced therefrom in the direction of movement of the adjusting piston, wherein the connecting means are designed such that the anchoring rod can be connected to the adjusting piston by means of the connecting means. According to the invention, it is thus provided that the guy rod has two connecting means spaced apart in the longitudinal direction of the tie rod in its end region directed towards the adjusting piston and / or that the adjusting piston has two connecting means spaced apart in its direction of movement, so that different mounting positions can be realized and different angular ranges depending on the mounting position are adjustable, in which the boom is movable depending on the position of the adjusting piston.
Die Ausführung der Verbindungsmittel ist weitgehend beliebig. Vorzugsweise sind die Verbindungsmittel als Löcher oder Langlöcher oder als Bohrungen und dergleichen ausgeführt, in denen zum Zwecke der Verbindung ein Bolzen aufgenommen ist. Auf diese Weise lassen sich der Verstellkolben und die Abspannstange einfach miteinander verbinden.The execution of the connecting means is largely arbitrary. Preferably, the connecting means are designed as holes or elongated holes or as bores and the like, in which a bolt is received for the purpose of connection. In this way, the adjusting piston and the tie rod can be easily connected.
Besonders vorteilhaft ist es, wenn die Verbindungsmittel derart angeordnet sind, dass der Abstand der Verbindungsmittel der Abspannstange oder der Abstand der Verbindungsmittel des Verstellkolbens oder die Summe beider Abstände dem maximalen Verstellweg, d.h. dem Hub des Verstellkolbens entsprechen. Ist dies der Fall, ergibt sich der Vorteil, dass die Verstellbereiche des Auslegers bei unterschiedlichen Montagestellungen aneinander grenzen, so dass ein vergleichsweise großer Winkelbereich vollständig nutzbar ist.It when the connecting means are arranged such that the distance of the connecting means of the guy rod or the distance of the connecting means of the adjusting or the sum of both distances the maximum displacement, ie the stroke of the adjusting correspond. If this is the case, there is the advantage that the adjustment ranges of the arm adjoin one another in the case of different mounting positions, so that a comparatively large angular range can be fully utilized.
Weisen sowohl der Ausleger als auch der Verstellkolben erste und zweite Verbindungsmittel auf, ergibt sich in dieser Ausführungsform der Erfindung dieselbe Auslegerstellung, wenn das erste Verbindungsmittel der Abspannstange mit dem ersten Verbindungsmittel des Verstellkolbens verbunden ist und der Verstellkolben sich in einer ausgefahrenen Stellung befindet, wie wenn das zweite Verbindungsmittel der Abspannstange mit dem zweiten Verbindungsmittel des Verstellkolbens verbunden ist und der Verstellkolben sich in einer eingefahrenen Stellung befindet. Dabei befinden sich die zweiten Verbindungsmittel näher am Endbereich der Abspannstange und des Verstellkolbens als die jeweiligen ersten Verbindungsmittel.If both the boom and the adjusting piston on first and second connecting means, results in this embodiment of the invention, the same boom position when the first connecting means of the guy rod is connected to the first connecting means of the adjusting piston and the adjusting piston is in an extended position, as if the second connecting means of the guy rod is connected to the second connecting means of the adjusting piston and the adjusting piston is in a retracted position. In this case, the second connection means are closer to the end region of the guy rod and the adjusting piston than the respective first connection means.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass die Abspannstange in ihrem zweiten Endbereich zwei voneinander beabstandete Laschen aufweist, die die ersten und zweiten Verbindungsmittel der Abspannstange aufweisen, wobei der Abstand der Laschen so gewählt ist, dass der Verstellzylinder und/oder der Verstellkolben zwischen den Laschen aufnehmbar und verschwenkbar ist.In a further embodiment of the invention it is provided that the guy rod has in its second end region two spaced apart tabs, which have the first and second connecting means of the guy rod, wherein the distance of the tabs is selected so that the adjusting cylinder and / or the adjusting between the Latches can be received and pivoted.
In bevorzugter Ausgestaltung der Erfindung sind die Verbindungsmittel derart angeordnet sind, dass sich der Ausleger in einer ersten Steilstellung befindet, wenn die zweiten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben sich in der eingefahrenen Stellung befindet.In a preferred embodiment of the invention, the connecting means are arranged such that the boom is in a first up position when the second connecting means communicate with each other and the adjusting piston is in the retracted position.
Weiterhin kann vorgesehen sein, dass die Verbindungsmittel derart angeordnet sind, dass sich der Ausleger in einer waagrechten oder im wesentlichen waagrechten Stellung befindet, wenn die zweiten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben sich in der ausgefahrenen Stellung befindet. Selbstverständlich ist anstatt der waagrechten Position auch eine andere Stellung denkbar.Furthermore, it can be provided that the connecting means are arranged such that the boom is in a horizontal or substantially horizontal position, when the second connecting means communicate with each other and the adjusting piston is in the extended position. Of course, another position is conceivable instead of the horizontal position.
In weiterer Ausgestaltung der Erfindung ist vorgesehen, dass sich der Ausleger in einer zweiten Steilstellung befindet, wenn die ersten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben sich in der eingefahrenen Stellung befindet. Ferner kann vorgesehen sein, dass die Verbindungsmittel derart angeordnet sind, dass sich der Ausleger in einer ersten Steilstellung befindet, wenn die ersten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben sich in der ausgefahrenen Stellung befindet.In a further embodiment of the invention it is provided that the boom is in a second up position when the first connecting means are in communication and the adjusting piston is in the retracted position. Furthermore, it can be provided that the connecting means arranged such are that the boom is in a first up position when the first connecting means communicate with each other and the adjusting piston is in the extended position.
Somit läßt sich dieselbe oder im wesentlichen dieselbe Stellung des Auslegers, nämlich die erste Steilstellung erreichen, wenn die zweiten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben eingefahren ist, wie wenn die ersten Verbindungsmittel miteinander in Verbindung stehen und der Verstellkolben ausgefahren ist. Grenzen die Verstellbereiche aneinander an, läßt sich ein vergleichsweise großer Verstellbereich abdecken, wobei die einzelnen Verstellbereiche von der Montagestellung der Abspannstange abhängen.Thus, the same or substantially the same position of the boom, namely reach the first steep position when the second connecting means communicate with each other and the adjusting piston is retracted, as when the first connecting means communicate with each other and the adjusting piston is extended. If the adjustment ranges are adjacent to one another, a comparatively large adjustment range can be covered, the individual adjustment ranges depending on the mounting position of the tie rod.
Denkbar ist beispielsweise, dass die erste Steilstellung einen Neigungswinkel von ca. 20° und die zweite Steilstellung einen Neigungswinkel von ca. 40° aufweist. Hierbei handelt es sich um exemplarische Werte, auch andere Werte sind denkbar.It is conceivable, for example, that the first steep position has an inclination angle of approximately 20 ° and the second steep position has an inclination angle of approximately 40 °. These are exemplary values, other values are conceivable.
Der Verstellzylinder kann schwenkbar an einer Stütze des Krans angeordnet sein.The adjusting cylinder may be pivotally mounted on a support of the crane.
Weitere Einzelheiten und Vorteile der Erfindung ergeben sich aus einem in der Zeichnung dargestellten Ausführungsbeispiel.Further details and advantages of the invention will become apparent from an embodiment shown in the drawing.
Es zeigen:
- Fig. 1:
- perspektivische Ansichten des Systems zur Auslegerverstellung eines Krans;
- Fig. 2:
- Positionen des Auslegers bei unterschiedlichen Montagestellungen;
- Fig. 3:
- Ansicht des Auslegers in der 20°-Stellung in einem ersten Montagezustand;
- Fig. 4:
- Ansicht des Auslegers in der waagrechten Stellung in einem ersten Montagezustand;
- Fig. 5:
- Ansicht des Auslegers in der 20°-Stellung in einem zweiten Montagezustand;
- Fig. 6:
- Ansicht des Auslegers in der 40°-Stellung in einem zweiten Montagezustand und
- Fig. 7:
- perspektivische Detailansichten des Auslegers sowie der Einheit aus Verstellzylinder und Verstellkolben.
- Fig. 1:
- perspective views of the system for boom adjustment of a crane;
- Fig. 2:
- Positions of the boom at different mounting positions;
- 3:
- View of the boom in the 20 ° position in a first mounting condition;
- 4:
- View of the boom in the horizontal position in a first mounting state;
- Fig. 5:
- View of the boom in the 20 ° position in a second mounting state;
- Fig. 6:
- View of the boom in the 40 ° position in a second mounting state and
- Fig. 7:
- perspective detail views of the boom and the unit of adjusting cylinder and adjusting piston.
Wie dies weiter aus
Die Laschen 50 weisen beide ein zweites Langloch 70 und ein erstes Langloch 60 auf. Die Langlöcher sind voneinander in Längsrichtung der Abspannstange 10 beabstandet, wobei die Langlöcher 70 dem Endbereich der Abspannstange 10 zugewandt sind und die Langlöcher 60 demgegenüber einen größeren Abstand zu dem Endbereich der Abspannstange 10 aufweisen.The
Der Verstellkolben der Kolben-Zylindereinheit 20 weist ebenfalls zwei in Längsrichtung des Verstellkolbens beabstandete Löcher 90 und 100 auf, wobei die Löcher 100 von dem Endbereich des Kolbens weiter beabstandet sind als die Löcher 90, wie dies aus
Die Verbindung der Löcher 60, 70, 90, 100 erfolgt mittels eines Bolzens 80, der durch die Löcher gesteckt und dort gesichert wird, so dass Abspannstange 10 und Kolben-Zylindereinheit 20 miteinander verbunden sind.The connection of the
Ein erfindungsgemäßer Kran mit einem System zur Auslegerverstellung läßt sich in mehreren unterschiedlichen Montagestellungen betreiben.An inventive crane with a system for boom adjustment can be operated in several different mounting positions.
Eine erste Montagestellung ergibt sich dann, wenn die Abspannstange 10 mit der Kolben-Zylindereinheit 20 mittels eines Bolzens 80 relativ zueinander fixiert sind, der durch die zweiten Löcher 70, 90 geführt sind. Diese Montagestellung ist in
Die Positionen gemäß der Schritte 1) und 2) in
Die Schritte 3) und 4) gemäß
Soll der Ausleger in einer zweiten Montagestellung betrieben werden, ist die Abspannstange 10 mit der Kolben-Zylindereinheit 20 mittels des Bolzens 80 relativ zueinander fixiert, der durch die ersten Löcher 60, 100 geführt ist. Diese Montagestellung ist in
Die Positionen gemäß der Schritte 1) und 2) gemäß
Die Schritte 3) und 4) gemäß
Claims (10)
- A crane comprising a system for boom adjustment having a stay rod (10) as well as having an adjustment piston received longitudinally displaceably in an adjustment cylinder, wherein the stay rod (10) is fastened in its first end region to the boom (40),
characterised in that
the stay rod (10) is connected in its second end region to the adjustment piston,
with the stay rod (10) having in its second end region a first connection means and a second connection means spaced apart therefrom in the longitudinal direction of the stay rod (10) and/or with the adjustment piston having a first connection means and a second connection means [spaced apart] therefrom in the movement direction of the adjustment piston,
with the connection means being made such that the stay rod (10) can be connected to the adjustment piston by the connection means. - A crane in accordance with claim 1, characterised in that the connection means are holes or bores (60, 70, 90, 100) which can be connected by means of a bolt (80).
- A crane in accordance with either of claims 1 or 2, characterised in that the connection means are arranged such that the spacing of the connection means of the stay rod (10) or the spacing of the connection means of the adjustment piston or the sum of both spacing distances correspond to the adjustment path of the adjustment piston.
- A crane in accordance with one of the preceding claims, characterised in that the stay rod (10) has in its second end region two mutually spaced apart lugs (50) having the first and second connection means of the stay rod (10), with the spacing of the lugs (50) being selected such that the adjustment cylinder and/or the adjustment piston can be received and pivoted between the lugs (50).
- A crane in accordance with one of the preceding claims, characterised in that the connection means are arranged such that the boom (40) is located in a first steep position when the second communication means are connected to one another and the adjustment piston is located in the retracted position.
- A crane in accordance with one of the preceding claims, characterised in that the connection means are arranged such that the boom (40) is located in a horizontal or substantially horizontal position when the second communication means are connected to one another and the adjustment piston is located in the extended position.
- A crane in accordance with one of the preceding claims, characterised in that the connection means are arranged such that the boom (40) is located in a second steep position when the first connection means are connected to one another and the adjustment piston is located in the retracted position.
- A crane in accordance with one of the preceding claims, characterised in that the connection means are arranged such that the boom is located in a first steep position when the first communication means are connected to one another and the adjustment piston is located in the extended position.
- A crane in accordance with one of the claims 5 to 8, characterised in that the first steep position has an inclination angle of approximately 20° and the second steep position has an inclination angle of approximately 40°.
- A crane in accordance with one of the preceding claims, characterised in that the adjustment cylinder is arranged pivotably at a support (30) of the crane.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202005012050U DE202005012050U1 (en) | 2005-08-01 | 2005-08-01 | System for adjusting a jib of a crane |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1749790A2 EP1749790A2 (en) | 2007-02-07 |
EP1749790A3 EP1749790A3 (en) | 2008-01-23 |
EP1749790B1 true EP1749790B1 (en) | 2009-09-16 |
Family
ID=37056488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP06013345A Active EP1749790B1 (en) | 2005-08-01 | 2006-06-28 | System to adjust a derricking jib crane |
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---|---|
EP (1) | EP1749790B1 (en) |
AT (1) | ATE443025T1 (en) |
DE (2) | DE202005012050U1 (en) |
ES (1) | ES2330773T3 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101979308B (en) * | 2010-10-14 | 2012-02-01 | 长沙中联重工科技发展股份有限公司 | Tower crane, pull rod structure for balance arm thereof and mounting method for structure |
CN104192738A (en) * | 2014-08-19 | 2014-12-10 | 徐工集团工程机械股份有限公司 | Crane and arm frame and auxiliary arm supporting device of crane |
CN105060143B (en) * | 2015-07-14 | 2017-03-29 | 三一汽车起重机械有限公司 | A kind of gib arm of crane frame mechanism and crane |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD136492A1 (en) * | 1978-05-25 | 1979-07-11 | Flecks Hans Helmut | APPARATUS FOR DISAPPOINTING A TOP OFFICER TO THE CRANE TRACKER |
DE9013488U1 (en) * | 1990-09-25 | 1990-12-06 | Liebherr-Werk Ehingen Gmbh, 7930 Ehingen | Mobile crane with a telescopic boom |
DE9218870U1 (en) * | 1991-10-02 | 1996-02-15 | Potain, Ecully, Rhône | Automatically collapsible tower crane |
FR2732000B1 (en) | 1995-03-22 | 1997-05-30 | Potain Sa | AUTOMATED MOUNT CRANE WITH FOLDABLE BOOM ON ITSELF |
DE19908485A1 (en) * | 1999-02-26 | 2000-08-31 | Man Wolffkran | Luffing crane |
FR2839962B1 (en) * | 2002-05-21 | 2004-10-29 | Potain Sa | TOWER CRANE WITH FOLDING COUNTER |
-
2005
- 2005-08-01 DE DE202005012050U patent/DE202005012050U1/en not_active Expired - Lifetime
-
2006
- 2006-06-28 ES ES06013345T patent/ES2330773T3/en active Active
- 2006-06-28 DE DE502006004841T patent/DE502006004841D1/en active Active
- 2006-06-28 EP EP06013345A patent/EP1749790B1/en active Active
- 2006-06-28 AT AT06013345T patent/ATE443025T1/en active
Also Published As
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ES2330773T3 (en) | 2009-12-15 |
DE502006004841D1 (en) | 2009-10-29 |
DE202005012050U1 (en) | 2006-12-14 |
ATE443025T1 (en) | 2009-10-15 |
EP1749790A3 (en) | 2008-01-23 |
EP1749790A2 (en) | 2007-02-07 |
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