EP0984895B1 - Crane with telescope jib - Google Patents
Crane with telescope jib Download PDFInfo
- Publication number
- EP0984895B1 EP0984895B1 EP98934847A EP98934847A EP0984895B1 EP 0984895 B1 EP0984895 B1 EP 0984895B1 EP 98934847 A EP98934847 A EP 98934847A EP 98934847 A EP98934847 A EP 98934847A EP 0984895 B1 EP0984895 B1 EP 0984895B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- locking
- piston
- securing
- telescopic
- unit
- 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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/705—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic telescoped by hydraulic jacks
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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
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
- B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
Definitions
- the invention relates to a crane with a telescopic boom according to the preamble of claim 1.
- the driver device consists of a hydraulic block with each other opposite cylinders for the one and formed by their pistons extendable bolt locking the respective shot and one perpendicular to it arranged hydraulic piston-cylinder unit for actuating the respective Locking bolt.
- the hydraulic elements of the driver device are in place so in operative connection that the radial piston-cylinder unit for retracting the respective locking bolt can only be operated if the Driver device with the out or bag-telescopic shot over the locking bolt is coupled.
- a comparable telescopic system is known from EP 0 754 646 A1. It consists of a basic shot and at least two against the basic shot telescopic shots. The shots are in their respective positions to each other releasable socket bolts penetrating through the walls of adjacent shots (Locking bolt) fixed.
- the telescopic system also has one of the Shots limited, preferably single-stage with pressure medium on both sides loadable lifting cylinder. This lifting cylinder is provided with drivers, which can be brought into active engagement with the shot to be relocated in each case.
- the piston rod is the Piston cylinder unit hinged to the inner end of the outer shot.
- DE 31 25 603 A1 discloses a telescopic boom with a basic boom and three telescopic shots, which are directly or indirectly via chain drives by means of a single-stage piston-cylinder unit are retractable and extendable.
- the cylinder housing of the Piston cylinder unit is at its rear end at the inner end of the Articulated boom.
- the piston rod is at the front end via a bolt connected to a cylinder case that includes the extended piston rod, the near its inner end with a bolt to the side walls of the first telescopic shot is connected.
- the disadvantage of this construction is that all three telescopic shots can only be retracted and extended together and one targeted retraction and extension of only one telescopic shot is not possible.
- the object of the invention is to provide a crane with a telescopic boom, the while maintaining the principle of individual telescoping of the shots by means of a piston-cylinder unit is inexpensive to manufacture and compared to known prior art enables a higher telescopic speed and whose usable load is higher.
- each a fuse and Locking unit attached with recesses of the telescopic Shots can be detached.
- the displaceable element of the piston-cylinder unit can optionally be the cylinder housing, in this case the piston rod with your articulated rear end to the inner end of the basic boom - or the Piston rod - in this case the cylinder housing is at its rear end articulated inner end of the basic boom. In both cases it is advantageous that by the arrangement of two securing and locking units the length of the Piston cylinder unit is only about 50% of the length of the main boom.
- a shorter piston-cylinder unit means a shorter kink length, so that the Piston-cylinder unit designed dimensionally cheaper with the same lifting force can be. This in turn has a direct impact on the weight, which despite the Additional weight through the arrangement of the second safety and Locking unit is lower compared to a 100% length.
- the arrangement with an am is preferred Basic boom hinged cylinder housing selected, in which the piston rod with a guiding and pulling device parallel to the piston-cylinder unit is connected, at the inner and outer ends of the two safety and Locking units are attached.
- the guiding and pulling device consists of a cross member attached to the front end of the piston rod, and two each guide elements lying on the right and left of the cylinder housing.
- the front one The end of the guide elements is with the cross bar on the one hand and the front one End area of the guide elements with the second securing and Locking unit on the other hand and the rear ends with the first securing and Locking unit connected.
- the cross member preferably has a Web plate stiffened flat profile and the guide elements consist of Box profiles with internal sheet metal stiffeners.
- the securing and locking unit arranged at the inner end has one on the cylinder housing of the piston-cylinder unit sliding bushing with is connected to the two guide elements.
- This socket is slidable Sliding piece arranged mechanically via guide grooves and guide rings is in operative connection with the two safety bolts and the gripper.
- the Arrangement of guide grooves and guide rings is chosen so that a Pulling the respective locking bolt is only possible if the two Safety bolts in the respective lateral recesses of the telescopic sections are retracted and vice versa the two safety bolts are pulled out the respective recesses is only possible if the respective locking bolt is set.
- the actuating element for the sliding piece is preferably one with the piston-cylinder unit connected to the guide elements.
- This Piston-cylinder unit is parallel to the cylinder housing of the shots moving piston-cylinder unit arranged.
- locking and locking unit can be arranged on the arrangement Socket be dispensed with.
- the other elements are congruent.
- To put the locking bolt have the shots except those on the inside and outside Recesses provided at the end also in the central area. These additional recesses are preferably approximately 50% of the length of the Shots arranged one above the other. This means that for an input or Slide out about 50% of the length of the latch over the one at the inner end arranged locking and locking unit and for further engagement or Slide out between 50-100% the latch over at the outer end arranged locking and locking unit takes place.
- a known piston-cylinder unit has the advantage that it is inexpensive is producible and good guidance in terms of security and Has locking unit.
- the oil supply to the Piston cylinder unit facilitated by the fact that the bottom oil supply directly on End of the basic boom can be realized with the cylinder housing.
- the amount of oil in the cylinder housing with hydraulic connections the have a large nominal diameter, without turbulence, in the shortest possible way into the Hydraulic tank are returned, which increases the speed at Telescopic operation is beneficial.
- the center of gravity of the extended The main boom moves due to the weight of the hydraulic oil Cylinder after the main boom base, which is a reduction in Main boom head weight and thus an increase in payload.
- Advantageous is also the mechanical interlock that is unaffected by electrical or hydraulic disturbances.
- FIGS. 1a, b and 2a, b are in one with an oval cross section equipped basic boom 1 several telescopic sections 2 - 5 inserted into each other axially displaceable.
- a unit is a telescopic boom for stationary or mobile cranes can be used.
- telescopic shots 2 - 5 are carried out by means of a device known single-stage piston-cylinder unit.
- the piston rod 16 (FIG. 2b) is not the embodiment, but the cylinder housing 6 on the extension arm 18 that closes the basic boom 1 by means of a bearing 7 articulated.
- Telescopic shot 2-5 has a recess 2B, 2B '- 5B, 5B' on each side. In this recess is by means of the safety and Locking unit 8.1, a securing bolt 13, 13 'can be inserted.
- a guide element 9, 9 ' is arranged, which on the front End are connected via a cross member 11 stiffened with a web plate 30. to A support roller 12 is attached in the area of the cross member 11.
- Figure 3 shows a perspective view of the details of the interior End arranged locking and locking unit 8.1. It consists of one slidably arranged on the cylinder housing 6 of the piston-cylinder unit Bushing 28, which is connected to the end regions of the guide elements 9, 9 '. The Connection is via bolts 26.1, 26.2 - 26.1 ", 26.2" ( Figure 2a, b).
- a sliding piece 21 is slidably arranged on the jack 28, a sliding piece 21 is slidably arranged. The shift takes place via a piston-cylinder unit 14 lying parallel to the cylinder housing 6, which in turn is firmly connected to the socket 28.
- the sliding piece 21 is on the right and left a web plate 29, 29 'lying in the horizontal plane is arranged, which with a Guide groove 27, 27 'is provided.
- This guide groove 27, 27 ' cooperates with a guide ring 22, 22 'connected to the respective securing bolt 13, 13' ( Figure 4, 5).
- the two opposing securing bolts 13, 13 ' are retractable and extendable into the respective lateral recesses 2B, 2B '- 5B, 5B' ( Figure 4, 5).
- a fork plate 31 with a guide ring 23 Perpendicular to the two web plates 29, 29 'is on Sliding piece 21 a fork plate 31 with a guide ring 23 is provided.
- This Guide ring 23 interacts with a guide groove arranged on the gripper 24 33.
- the gripper 24 is in a socket 32 as shown in FIGS. 4 and 5 guided.
- proximity switches 25, 25.1, 25 ', 25.1', 25.2, 25.3, 25.2 ', 25.3' arranged in pairs. These signal at Displacement of the locking and locking unit 8.1 along the Cylinder housing 6 an approach to one of the side recesses 2B, 2B '- 5B, 5B '.
- the individual steps in telescoping are shown in FIG. 4 in the sequence of steps a - d shown.
- the sequence of steps a) is identical to the illustration in FIG. 1a, b, so that there is no need to repeat the description.
- To extend the innermost Telescopic shot 5 is the fuse and arranged at the inner end Move locking unit 8.1 along the cylinder housing until it moves with the corresponding locking bolt 5A can be coupled.
- the locking bolts 13, 13 'in the provided lateral recesses 5B, 5B 'pushed Before locking of the fourth telescopic section 5 with the third telescopic section 4 can be released according to the representation in Figure 4, the locking bolts 13, 13 'in the provided lateral recesses 5B, 5B 'pushed.
- step sequence b) in FIG. 4 by moving the piston rod 16 to the left the innermost telescopic section 5 partially pushed out.
- the sequence of steps b) shows the final state of this first extension phase.
- Step sequence c) shows the final state of the retraction of the backup and Locking unit 8.1 and gripping the locking bolt 5A of the fourth Telescopic shot 5 by the invention at the outer end of the Piston cylinder unit arranged second locking and locking unit 8.2.
- the locking bolts 13, 13 ' are inserted into the provided lateral recesses 5B, 5B 'pushed. That way the second locking and locking unit 8.2 with the innermost telescopic section 5 bolted.
- Step sequence d) shows the final state of the complete pushing out of the innermost Telescopic shot 5 after activation of the piston-cylinder unit.
- Locking bolt 5A in the corresponding receptacle of the third telescopic shot 4 a.
- Figure 5 shows a section in the direction A-A in Figure 4.
- This representation in connection with Figure 4 shows a situation where the innermost telescopic section 5 with the most End arranged locking and locking unit 8.1 is bolted.
- Through this bolting becomes the innermost Telescopic shot 5 on the locking and locking unit 8.1 with the Piston cylinder unit bolted.
- the locking pin 5A from the upper recess 34.1 pulled so that the innermost telescopic section 5 through Moving the piston rod 16 can be pushed out.
- Figure 6 shows the same section A-A in Figure 4, with the difference that the Locking bolt 5A of the innermost telescopic section 5 in the upper recess 34.1 of the third telescopic section 4 is inserted. Accordingly, by the in Figure 3 described mechanical coupling of the safety bolts 13, 13 'from the lateral recesses 5B, 5B 'moved out.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Actuator (AREA)
Abstract
Description
Die Erfindung betrifft einen Kran mit einem Teleskopausleger gemäß dem Oberbegriff
des Patentanspruches 1.The invention relates to a crane with a telescopic boom according to the preamble
of
Bei einem aus der EP 0 661 234 A1 bekannten Kran mit Teleskopausleger sind dessen einzelne austeleskopierbare Schüsse nach dem Lösen von arretierenden Bolzenverbindungen mit nur einer einstufigen Kolbenzylindereinheit aus- und einfahrbar und in den jeweils aus- oder eingefahrenen Stellungen durch in Richtung auf ihre verriegelten Stellungen federbelastete Verriegelungsbolzen verbolzt. Die Kolbenstange der einstufigen Kolbenzylindereinheit ist an dem das innere Ende des äußeren Schusses abschließenden Auslegeanlenkstück angelenkt. Eine Mitnehmereinrichtung, die mit Aufnahmen der austeleskopierbaren Schüsse kuppelbar ist, ist in dem Bereich des Endes des Zylinders angeordnet, aus dem die Kolbenstange austritt. Die Mitnehmereinrichtung besteht aus einem hydraulischen Block mit einander gegenüberliegenden Zylindern für die durch deren Kolben gebildeten ein- und ausfahrbaren den jeweiligen Schuß arretierenden Bolzen sowie einer senkrecht dazu angeordneten hydraulischen Kolbenzylindereinheit zum Betätigen des jeweiligen Verriegelungsbolzens. Die hydraulischen Elemente der Mitnehmereinrichtung stehen so in Wirkverbindung, daß die radial liegende Kolbenzylindereinheit zum Einziehen des jeweiligen Verriegelungsbolzen nur betätigt werden kann, wenn die Mitnehmereinrichtung mit dem aus- oder einzuteleskopierenden Schuß über die arretierenden Bolzen gekuppelt ist.In a crane with a telescopic boom known from EP 0 661 234 A1 whose individual telescopic shots after releasing locking ones Bolt connections with only one single-stage piston cylinder unit retractable and in the respective extended or retracted positions by in the direction bolted spring-loaded locking bolts to their locked positions. The Piston rod of the single-stage piston-cylinder unit is at the inner end of the outer shot final articulation joint articulated. A Driver device that can be coupled with recordings of the telescopic shots is located in the area of the end of the cylinder from which the piston rod exit. The driver device consists of a hydraulic block with each other opposite cylinders for the one and formed by their pistons extendable bolt locking the respective shot and one perpendicular to it arranged hydraulic piston-cylinder unit for actuating the respective Locking bolt. The hydraulic elements of the driver device are in place so in operative connection that the radial piston-cylinder unit for retracting the respective locking bolt can only be operated if the Driver device with the out or bag-telescopic shot over the locking bolt is coupled.
Ein vergleichbares Teleskopiersystem ist aus der EP 0 754 646 A1 bekannt. Es besteht aus einem Grundschuß und mindestens zwei gegenüber dem Grundschuß teleskopierbaren Schüssen. Die Schüsse werden in ihrer jeweiligen Lage zueinander durch die Wandungen angrenzender Schüsse durchsetzende, lösbare Steckbolzen (Verriegelungsbolzen) fixiert. Das Teleskopiersystem weist weiterhin einen von den Schüssen eingegrenzten, vorzugsweise einstufigen beidseitig mit Druckmittel beaufschlagbaren Hubzylinder auf. Dieser Hubzylinder ist mit Mitnehmern versehen, die in Wirkeingriff mit dem jeweils zu verlagernden Schuß bringbar sind. Wie schon beim zuvor erläuterten Stand der Technik ist die Kolbenstange der Kolbenzylindereinheit am inneren Ende des äußeren Schusses angelenkt. Beide bekannten Vorschläge haben den Nachteil, daß die Ölversorgung der Kolbenzylindereinheit innenseitig erfolgt und für die Rückführung zum Tank lange Wege erforderlich sind mit entsprechender Turbulenzbildung. Dadurch wird die Geschwindigkeit beim Teleskopieren erniedrigt. Außerdem wird durch die in der Kolbenzylindereinheit befindliche Ölmenge das Hauptauslegerkopfgewicht erhöht, was eine Verringerung der ausnutzbaren Traglast bedeutet.A comparable telescopic system is known from EP 0 754 646 A1. It consists of a basic shot and at least two against the basic shot telescopic shots. The shots are in their respective positions to each other releasable socket bolts penetrating through the walls of adjacent shots (Locking bolt) fixed. The telescopic system also has one of the Shots limited, preferably single-stage with pressure medium on both sides loadable lifting cylinder. This lifting cylinder is provided with drivers, which can be brought into active engagement with the shot to be relocated in each case. How nice in the previously described prior art, the piston rod is the Piston cylinder unit hinged to the inner end of the outer shot. Both known proposals have the disadvantage that the oil supply to the Piston cylinder unit inside and long for the return to the tank Paths are required with appropriate turbulence formation. This will make the Reduced speed when telescoping. In addition, the in the Piston cylinder unit located amount of oil increases the main boom head weight, what means a reduction in the usable load.
In der DE 31 25 603 A1 ist ein Teleskopausleger offenbart mit einem Grundausleger und drei Teleskopschüssen, die direkt bzw. indirekt über Kettentriebe mittels einer einstufigen Kolbenzylindereinheit ein- und ausfahrbar sind. Das Zylindergehäuse der Kolbenzylindereinheit ist mit seinem hinteren Ende am inneren Ende des Grundauslegers angelenkt. Die Kolbenstange ist am vorderen Ende über einen Bolzen mit einem die ausgefahrene Kolbenstange umfassenden Zylinderkasten verbunden, der in der Nähe seines inneren Endes mit einem Bolzen mit den Seitenwänden des ersten Teleskopschusses verbunden ist. Nachteilig bei dieser Konstruktion ist, daß alle drei Teleskopschüsse nur gemeinsam ein- und ausgefahren werden können und ein gezieltes Ein- und Ausfahren nur eines Teleskopschusses nicht möglich ist.DE 31 25 603 A1 discloses a telescopic boom with a basic boom and three telescopic shots, which are directly or indirectly via chain drives by means of a single-stage piston-cylinder unit are retractable and extendable. The cylinder housing of the Piston cylinder unit is at its rear end at the inner end of the Articulated boom. The piston rod is at the front end via a bolt connected to a cylinder case that includes the extended piston rod, the near its inner end with a bolt to the side walls of the first telescopic shot is connected. The disadvantage of this construction is that all three telescopic shots can only be retracted and extended together and one targeted retraction and extension of only one telescopic shot is not possible.
Aufgabe der Erfindung ist es, einen Kran mit einem Teleskopausleger anzugeben, der unter Beibehaltung des Prinzips der einzelnen Teleskopierbarkeit der Schüsse mittels einer Kolbenzylindereinheit kostengünstig herstellbar ist und gegenüber dem bekannten Stand der Technik eine höhere Teleskopiergeschwindigkeit ermöglicht und dessen ausnutzbare Traglast höher liegt.The object of the invention is to provide a crane with a telescopic boom, the while maintaining the principle of individual telescoping of the shots by means of a piston-cylinder unit is inexpensive to manufacture and compared to known prior art enables a higher telescopic speed and whose usable load is higher.
Diese Aufgabe wird ausgehend vom Oberbegriff in Verbindung mit den
kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte
Weiterbildungen sind Bestandteil von Unteransprüchen. This task is based on the generic term in conjunction with the
characterizing features of
Im Unterschied zum bekannten Stand der Technik ist am inneren und äußeren Ende des verschiebbaren Elementes der Kolbenzylindereinheit je eine Sicherungs- und Verriegelungseinheit befestigt, die mit Ausnehmungen der austeleskopierbaren Schüsse kuppelbar ist. Das verschiebbare Element der Kolbenzylindereinheit kann wahlweise das Zylindergehäuse sein, in diesem Falle ist die Kolbenstange mit ihrem hinteren Ende am inneren Ende des Grundauslegers angelenkt - oder die Kolbenstange - in diesem Falle ist das Zylindergehäuse mit seinem hinteren Ende am inneren Ende des Grundauslegers angelenkt. In beiden Fällen ist von Vorteil, daß durch die Anordnung von zwei Sicherungs- und Verriegelungseinheiten die Länge der Kolbenzylindereinheit nur noch etwa 50% der Länge des Hauptauslegers beträgt. Eine kürzere Kolbenzylindereinheit bedeutet eine kürzere Knicklänge, so daß die Kolbenzylindereinheit bei gleicher Hubkraft abmessungsmäßig günstiger ausgelegt werden kann. Das wirkt sich wiederum direkt auf das Gewicht aus, das trotz des Zusatzgewichtes durch die Anordnung der zweiten Sicherungs- und Verriegelungseinheit niedriger ist im Vergleich zu einer 100%-Länge. Für das Teleskopieren jedes einzelnen Teleskopschusses sind zwar zwei Hübe erforderlich, da aber der Hub nur noch 50% beträgt, ist der Gesamthub genauso groß wie bei der einer langen Kolbenzylindereinheit. Bevorzugt wird die Anordnung mit einem am Grundausleger angelenkten Zylindergehäuse gewählt, bei der die Kolbenstange mit einer parallel zur Kolbenzylindereinheit liegenden Führungs- und Zugvorrichtung verbunden ist, an deren innerem und äußerem Ende die beiden Sicherungs- und Verriegelungseinheiten befestigt sind. Die Führungs- und Zugvorrichtung besteht aus einem am vorderen Ende der Kolbenstange befestigten Querholm, und zwei jeweils rechts und links des Zylindergehäuses liegenden Führungselementen. Das vordere Ende der Führungselemente ist mit dem Querholm einerseits und der vordere Endbereich der Führungselemente mit der zweiten Sicherungs- und Verriegelungseinheit andererseits und die hinteren Enden mit der ersten Sicherungsund Verriegelungseinheit verbunden. Vorzugsweise weist der Querholm ein mit einem Stegblech versteiftes Flach-Profil auf und die Führungselemente bestehen aus Kastenprofilen mit innenliegenden Blechversteifungen.In contrast to the known prior art is at the inner and outer end of the displaceable element of the piston-cylinder unit each a fuse and Locking unit attached with recesses of the telescopic Shots can be detached. The displaceable element of the piston-cylinder unit can optionally be the cylinder housing, in this case the piston rod with your articulated rear end to the inner end of the basic boom - or the Piston rod - in this case the cylinder housing is at its rear end articulated inner end of the basic boom. In both cases it is advantageous that by the arrangement of two securing and locking units the length of the Piston cylinder unit is only about 50% of the length of the main boom. A shorter piston-cylinder unit means a shorter kink length, so that the Piston-cylinder unit designed dimensionally cheaper with the same lifting force can be. This in turn has a direct impact on the weight, which despite the Additional weight through the arrangement of the second safety and Locking unit is lower compared to a 100% length. For the Telescoping every single telescopic shot requires two strokes because but the stroke is only 50%, the total stroke is as large as that of one long piston cylinder unit. The arrangement with an am is preferred Basic boom hinged cylinder housing selected, in which the piston rod with a guiding and pulling device parallel to the piston-cylinder unit is connected, at the inner and outer ends of the two safety and Locking units are attached. The guiding and pulling device consists of a cross member attached to the front end of the piston rod, and two each guide elements lying on the right and left of the cylinder housing. The front one The end of the guide elements is with the cross bar on the one hand and the front one End area of the guide elements with the second securing and Locking unit on the other hand and the rear ends with the first securing and Locking unit connected. The cross member preferably has a Web plate stiffened flat profile and the guide elements consist of Box profiles with internal sheet metal stiffeners.
Die am inneren Ende angeordnete Sicherungs- und Verriegelungseinheit weist eine auf dem Zylindergehäuse der Kolbenzylindereinheit verschiebbare Buchse auf, die mit den beiden Führungselementen verbunden ist. Auf dieser Buchse ist verschiebbar ein Schiebestück angeordnet, das über Führungsnuten und Führungsringe mechanisch mit den beiden Sicherungsbolzen und dem Greifer in Wirkverbindung steht. Die Anordnung von Führungsnuten und Führungsringen ist dabei so gewählt, daß ein Ziehen des jeweiligen Verriegelungsbolzens nur möglich ist, wenn die beiden Sicherungsbolzen in die jeweiligen seitlichen Ausnehmungen der Teleskopschüsse eingefahren sind und umgekehrt ein Herausfahren der beiden Sicherungsbolzen aus den jeweiligen Ausnehmungen nur möglich ist, wenn der jeweilige Verriegelungsbolzen gesetzt ist. Das Betätigungselement für das Schiebestück ist vorzugsweise eine mit den Führungselementen verbundene Kolbenzylindereinheit. Diese Kolbenzylindereinheit ist parallel liegend zum Zylindergehäuse der die Schüsse bewegenden Kolbenzylindereinheit angeordnet. Bei der am äußeren Ende angeordneten Sicherungs- und Verriegelungseinheit kann auf die Anordnung einer Buchse verzichtet werden. Die übrigen Elemente sind deckungsgleich. Zum Setzen der Verriegelungsbolzen weisen die Schüsse außer den am inneren und äußeren Ende vorgesehenen Ausnehmungen auch im mittleren Bereich Ausnehmungen auf. Vorzugsweise sind diese zusätzlichen Ausnehmungen bei etwa 50% der Länge der Schüsse übereinanderliegend angeordnet. Dies bedeutet, daß für ein Ein- bzw. Ausschieben bis etwa 50% der Länge die Verriegelung über die am inneren Ende angeordnete Sicherungs- und Verriegelungseinheit und für das weitere Ein- bzw. Ausschieben zwischen 50-100 % die Verriegelung über die am äußeren Ende angeordnete Sicherungs- und Verriegelungseinheit erfolgt.The securing and locking unit arranged at the inner end has one on the cylinder housing of the piston-cylinder unit sliding bushing with is connected to the two guide elements. This socket is slidable Sliding piece arranged mechanically via guide grooves and guide rings is in operative connection with the two safety bolts and the gripper. The Arrangement of guide grooves and guide rings is chosen so that a Pulling the respective locking bolt is only possible if the two Safety bolts in the respective lateral recesses of the telescopic sections are retracted and vice versa the two safety bolts are pulled out the respective recesses is only possible if the respective locking bolt is set. The actuating element for the sliding piece is preferably one with the piston-cylinder unit connected to the guide elements. This Piston-cylinder unit is parallel to the cylinder housing of the shots moving piston-cylinder unit arranged. At the end arranged locking and locking unit can be arranged on the arrangement Socket be dispensed with. The other elements are congruent. To put the locking bolt have the shots except those on the inside and outside Recesses provided at the end also in the central area. These additional recesses are preferably approximately 50% of the length of the Shots arranged one above the other. This means that for an input or Slide out about 50% of the length of the latch over the one at the inner end arranged locking and locking unit and for further engagement or Slide out between 50-100% the latch over at the outer end arranged locking and locking unit takes place.
Die bevorzugte Konstruktion für die Teleskopierbarkeit der Schüsse unter Verwendung einer bekannten Kolbenzylindereinheit hat den Vorteil, daß sie kostengünstig herstellbar ist und eine gute Führung hinsichtlich der Sicherungs- und Verriegelungseinheit aufweist. Außerdem wird die Ölversorgung der Kolbenzylindereinheit dadurch erleichtert, daß die bodenseitige Ölzuführung direkt am Ende des Grundauslegers mit dem Zylindergehäuse realisiert werden kann. Dadurch kann die sich im Zylindergehäuse befindliche Ölmenge mit Hydraulikverbindungen, die eine große Nennweite besitzen, turbulenzfrei auf kürzestem Wege in den Hydrauliktank zurückgeführt werden, was einer Geschwindigkeitserhöhung beim Teleskopiervorgang förderlich ist. Die Schwerpunktlage des ausgefahrenen Hauptauslegers verschiebt sich durch das Eigengewicht des Hydrauliköles des Zylinders nach dem Hauptauslegerfußpunkt, was eine Verringerung des Hauptauslegerkopfgewichtes und damit eine Traglasterhöhung bedeutet. Von Vorteil ist auch die mechanische Verriegelung, die unbeeinflußbar ist von elektrischen oder hydraulischen Störungen.The preferred design for using the telescopic shot A known piston-cylinder unit has the advantage that it is inexpensive is producible and good guidance in terms of security and Has locking unit. In addition, the oil supply to the Piston cylinder unit facilitated by the fact that the bottom oil supply directly on End of the basic boom can be realized with the cylinder housing. Thereby can the amount of oil in the cylinder housing with hydraulic connections, the have a large nominal diameter, without turbulence, in the shortest possible way into the Hydraulic tank are returned, which increases the speed at Telescopic operation is beneficial. The center of gravity of the extended The main boom moves due to the weight of the hydraulic oil Cylinder after the main boom base, which is a reduction in Main boom head weight and thus an increase in payload. Advantageous is also the mechanical interlock that is unaffected by electrical or hydraulic disturbances.
In der Zeichnung wird anhand eines Ausführungsbeispieles der erfindungsgemäß ausgebildete Teleskopausleger näher erläutert. Es zeigen:
- Figur 1a,b
- im Längsschnitt einen erfindungsgemäß ausgebildeten eingefahrenen Teleskopausleger
- Figur 2a
- eine Seitenansicht in Richtung X in Fig. 1a
- Figur 2b
- eine Draufsicht in Richtung X in Fig. 1a
Figur 3- eine perspektivische Darstellung eines teilaufgeschnittenen Teleskopauslegers
Figur 4- die einzelnen Stadien des eingefahrenen Teleskopauslegers (a) bis zum Stadium des teilweise ausgefahrenen Teleskopauslegers (d)
Figur 5- einen Schnitt in Richtung A-A in Figur 4 (Verriegelung gezogen)
Figur 6- einen Schnitt in Richtung A-A in Figur 4 (Verriegelung verbolzt)
- Figure 1a, b
- in longitudinal section a retracted telescopic boom designed according to the invention
- Figure 2a
- a side view in the direction X in Fig. 1a
- Figure 2b
- a plan view in the direction X in Fig. 1a
- Figure 3
- a perspective view of a partially cut telescopic boom
- Figure 4
- the individual stages of the retracted telescopic boom (a) to the stage of the partially extended telescopic boom (d)
- Figure 5
- 4 shows a section in the direction AA in FIG. 4 (lock pulled)
- Figure 6
- a section in the direction AA in Figure 4 (locking bolted)
Gemäß den Figuren 1a,b und 2a,b sind in einem mit einem ovaloiden Querschnitt
ausgestatteten Grundausleger 1 mehrere Teleskopschüsse 2 - 5 ineinandergesteckt
axial verschiebbar gelagert. Eine solche Baueinheit ist als Teleskopausleger für
stationäre oder fahrbare Krane einsetzbar. Die Teleskopierbarkeit der einzelnen
Teleskopschüsse 2 - 5 erfolgt in diesem Ausführungsbeispiel mittels einer an sich
bekannten einstufigen Kolbenzylindereinheit. Im Unterschied zu üblichen
Ausführungen ist nicht die Kolbenstange 16 (Figur 2b), sondern das Zylindergehäuse 6
am den Grundausleger 1 abschließenden Auslegeanlenkstück 18 mittels eines Lagers
7 angelenkt. Im ersten bis vierten Teleskopschuß 2 - 5 sind im Bereich der hinteren
Lagerung je ein Verriegelungsbolzen 2A - 5A vorgesehen, über die die
Teleskopschüsse 1 - 4 miteinander verbunden werden. Außerdem weist jeder
Teleskopschuß 2 - 5 auf beiden Seiten je eine Ausnehmung 2B, 2B' - 5B, 5B' auf. In
dieser Ausnehmung ist mittels der in Figur 3 erläuterten Sicherungs- und
Verriegelungseinheit 8.1 ein Sicherungsbolzen 13, 13' einsteckbar. Auf beiden Seiten
des Zylindergehäuses 6 ist je ein Führungselement 9, 9' angeordnet, die am vorderen
Ende über ein mit einem Stegblech 30 versteiften Querholm 11 verbunden sind. Zur
Abstützung ist im Bereich des Querholmes 11 eine Stützrolle 12 angebracht. Für die
nicht näher dargestellte Seilführung sind am Kopfstück 19 des Grundauslegers 1
Kopfrollen 15, 15' vorgesehen. Erfindungsgemäß ist an der hier einstufigen
Kolbenzylindereinheit am äußeren Ende eine zweite Sicherungs- und
Verriegelungseinheit 8.2 angeordnet. Sie ist mit der am inneren Ende angeordneten
Sicherungs- und Verriegelungseinheit 8.1 deckungsgleich, wobei der Antrieb 14 dem
inneren Ende des Teleskopauslegers zugewandt ist. Die hydraulische Versorgung des
jeweiligen Antriebes der beiden Sicherungs- und Verriegelungseinheiten 8.1, 8.2
erfolgt über eine Steuer- und Blasenspeichereinheit 35.1, 35.2. Je nach Länge der die
Schüsse 2-5 bewegenden Kolbenzylindereinheit können die beiden Steuer- und
Blasenspeichereinheiten 35.1, 35.2 zu einem Block zusammengefaßt werden. Für die
Energieversorgung 17 der jeweiligen Sicherungs- und Verriegelungseinheit 8.1, 8.2 ist
an der Unterseite der Kolbenzylindereinheit eine Führungskonstruktion 10
angeordnet.According to FIGS. 1a, b and 2a, b are in one with an oval cross section
equipped
Figur 3 zeigt in einer perspektivischen Darstellung die Einzelheiten der am inneren
Ende angeordneten Sicherungs- und Verriegelungseinheit 8.1. Sie besteht aus einer
auf dem Zylindergehäuse 6 der Kolbenzylindereinheit verschiebbar angeordneten
Buchse 28, die mit den Endbereichen der Führungselemente 9, 9' verbunden ist. Die
Verbindung erfolgt über Bolzen 26.1, 26.2 - 26.1", 26.2" (Figur 2a,b). Auf der Buchse
28 ist verschiebbar ein Schiebestück 21 angeordnet. Die Verschiebung erfolgt über
eine parallel zum Zylindergehäuse 6 liegende Kolbenzylindereinheit 14, die wiederum
fest mit der Buchse 28 verbunden ist. Am Schiebestück 21 ist jeweils rechts und links
ein in der Horizontalebene liegendes Stegblech 29, 29' angeordnet, das mit einer
Führungsnut 27, 27' versehen ist. Diese Führungsnut 27, 27' wirkt zusammen mit
einem mit dem jeweiligen Sicherungsbolzen 13, 13' verbundenen Führungsring 22, 22'
(Figur 4, 5). Die beiden einander gegenüberliegenden Sicherungsbolzen 13,13'
sind in die jeweiligen seitlichen Ausnehmungen 2B, 2B' - 5B, 5B' ein- und ausfahrbar
(Figur 4, 5). Senkrecht zu den beiden Stegblechen 29, 29' liegend ist am
Schiebestück 21 ein Gabelblech 31 mit einem Führungsring 23 vorgesehen. Dieser
Führungsring 23 wirkt zusammen mit einer am Greifer 24 angeordneten Führungsnut
33. Der Greifer 24 ist entsprechend den Darstellungen in Figur 4, 5 in einer Buchse 32
geführt. Im oberen Bereich des Schiebestückes 21 sind Näherungsschalter 25, 25.1,
25', 25.1', 25.2, 25.3, 25.2', 25.3' paarweise angeordnet. Diese signalisieren bei
Verschiebung der Sicherungs- und Verriegelungseinheit 8.1 entlang des
Zylindergehäuses 6 eine Annäherung an eine der seitlichen Ausnehmungen 2B, 2B' -
5B, 5B'.Figure 3 shows a perspective view of the details of the interior
End arranged locking and locking unit 8.1. It consists of one
slidably arranged on the
Die einzelnen Schritte beim Teleskopieren sind in Figur 4 in den Schrittfolgen a - d
dargestellt. Die Schrittfolge a) ist identisch mit der Darstellung in Figur 1a,b, so daß
sich eine Wiederholung der Beschreibung erübrigt. Zum Ausfahren wird die
Kolbenzylindereinheit betätigt und die Kolbenstange 16 mitsamt den
Führungselementen 9, 9' nach links bewegt. Zum Ausfahren des innersten
Teleskopschusses 5 wird die am inneren Ende angeordnete Sicherungs- und
Verriegelungseinheit 8.1 entlang des Zylindergehäuses so weit verfahren, bis diese mit
dem entsprechenden Verriegelungsbolzen 5A koppelbar ist. Bevor die Verriegelung
des vierten Teleskopschusses 5 mit dem dritten Teleskopschuß 4 lösbar ist, werden
entsprechend der Darstellung in Figur 4 die Sicherungsbolzen 13, 13' in die dafür
vorgesehenen seitlichen Ausnehmungen 5B, 5B' geschoben. Auf diese Weise ist die
Sicherungs- und Verriegelungseinheit 8.1 mit dem innersten Teleskopschuß 5 verbolzt.
Gemäß der Schrittfolge b) in Figur 4 wird durch Verschieben der Kolbenstange 16
nach links der innerste Teleskopschuß 5 teilweise ausgeschoben. Die Schrittfolge b)
zeigt den Endzustand dieser ersten Ausfahrphase. Danach wird der
Verriegelungsbolzen 5A des innersten Teleskopschusses 5 in die etwa in der Mitte des
dritten Teleskopschusses 4 sich befindende Ausnehmung 34.1 eingeschoben. Auf
diese Weise ist der teilweise ausgeschobene innerste Teleskopschuß 5 mit dem dritten
Teleskopschuß 4 verriegelt.The individual steps in telescoping are shown in FIG. 4 in the sequence of steps a - d
shown. The sequence of steps a) is identical to the illustration in FIG. 1a, b, so that
there is no need to repeat the description. To extend the
Piston cylinder unit actuated and the
Schrittfolge c) zeigt den Endzustand des Zurückfahrens der Sicherungs- und
Verriegelungseinheit 8.1 und das Ergreifen des Verriegelungsbolzens 5A des vierten
Teleskopschusses 5 durch die erfindungsgemäß am äußeren Ende der
Kolbenzylindereinheit angeordnete zweite Sicherungs- und Verriegelungseinheit 8.2.
Bevor diese Verriegelung aber lösbar ist, werden die Sicherungsbolzen 13,13' in die
dafür vorgesehenen seitlichen Ausnehmungen 5B, 5B' geschoben. Auf diese Weise ist
die zweite Sicherungs- und Verriegelungseinheit 8.2 mit dem innersten Teleskopschuß
5 verbolzt.Step sequence c) shows the final state of the retraction of the backup and
Locking unit 8.1 and gripping the
Schrittfolge d) zeigt den Endzustand des vollständigen Ausschiebens des innersten
Teleskopschusses 5 nach Aktivierung der Kolbenzylindereinheit. Zur Verriegelung des
vierten Teleskopschusses 5 mit dem dritten Teleskopschuß 4 greift der
Verriegelungsbolzen 5A in die entsprechende Aufnahme des dritten Teleskopschusses
4 ein. Gleichzeitig werden dabei die beiden Sicherungsbolzen 13,13' aus den seitlichen
Ausnehmungen 5B, 5B' herausgefahren. Danach fährt der verfahrbare Teil der
Kolbenzylindereinheit wieder in die Ausgangsstellung zurück, vergleichbar der
Schrittfolge a).Step sequence d) shows the final state of the complete pushing out of the innermost
Telescopic shot 5 after activation of the piston-cylinder unit. To lock the
fourth
Aus Platzgründen und wegen der Wiederholung der Verfahrensschritte wurde auf die Darstellung und Beschreibung des Ausschiebens der übrigen Teleskopschüsse 2-4 verzichtet.For reasons of space and because of the repetition of the procedural steps, the Representation and description of the extension of the remaining telescopic sections 2-4 waived.
Figur 5 zeigt einen Schnitt in Richtung A-A in Figur 4. Diese Darstellung in Verbindung
mit Figur 4 zeigt eine Situation, wo der innerste Teleskopschuß 5 mit der am inneren
Ende angeordneten Sicherungs- und Verriegelungseinheit 8.1 verbolzt ist. Dazu sind
die in der Sicherungs- und Verriegelungseinheit 8.1 angeordneten Sicherungsbolzen
13, 13' nach rechts und nach links in die im innersten Teleskopschuß 5 angeordneten
Ausnehmungen 5B, 5B' eingefahren. Durch diese Verbolzung wird der innerste
Teleskopschuß 5 über die Sicherungs- und Verriegelungseinheit 8.1 mit der
Kolbenzylindereinheit verbolzt. Danach wird der Verriegelungsbolzen 5A aus der
oberen Ausnehmung 34.1 gezogen, so daß der innerste Teleskopschuß 5 durch
Bewegen der Kolbenstange 16 ausgeschoben werden kann.Figure 5 shows a section in the direction A-A in Figure 4. This representation in connection
with Figure 4 shows a situation where the innermost
Figur 6 zeigt den gleichen Schnitt A-A in Figur 4, nur mit dem Unterschied, daß der
Verriegelungsbolzen 5A des innersten Teleskopschusses 5 in die obere Ausnehmung
34.1 des dritten Teleskopschusses 4 eingeschoben ist. Demzufolge sind durch die in
Figur 3 beschriebene mechanische Koppelung die Sicherungsbolzen 13, 13' aus den
seitlichen Ausnehmungen 5B, 5B' herausgefahren. Figure 6 shows the same section A-A in Figure 4, with the difference that the
Claims (15)
- Crane having a telescopic jib, whose individually telescopically extendable sections (2-5) arranged in a basic jib (1) are telescopically extendable and retractable by a hydraulic piston/cylinder unit after the release of arresting pin connections (13, 13') and are pinned by locking pins (2A-5A) in the respectively telescopically extended or retracted positions, characterized in that the piston rod of the piston/cylinder unit is linked at its rear end to the inner end of the basic jib (1), and a securing and locking unit is fastened in each case to the inner end and outer end of the displaceable cylinder housing (6), which securing and locking unit can be coupled to recesses (2B, 2B'-5B, 5B'; 34.1-34.4) of the telescopically extendable sections (2-5).
- Crane having a telescopic jib, whose individually telescopically extendable sections (2-5) arranged in a basic jib (1) are telescopically extendable and retractable by a hydraulic piston/cylinder unit after the release of arresting pin connections (13, 13') and are pinned by locking pins (2A-5A) in the respectively telescopically extended or retracted positions, characterized in that the cylinder housing (6) of the piston/cylinder unit is linked at its rear end to the inner end of the basic jib (1), and the piston rod (16) is connected at the front end to a guide and tension device lying parallel to the piston/cylinder unit, and a securing and locking unit (8.1; 8.2) is arranged in each case at the inner end and outer end of the guide and tension device, which securing and locking unit (8.1; 8.2) can be coupled to recesses (2B, 2B'-5B, 5B'; 34.1-34.4) of the telescopically extendable sections (2-5).
- Crane according to Claim 1 or 2, characterized in that, to set the locking pins (2A-5A), the sections (2-5), apart from the recesses (2B, 2B'-5B, 5B') provided at the inner end and outer end, also have recesses (34.1-34.4) in the centre region.
- Crane according to Claim 3, characterized in that the additional recesses (34.1-34.4) are arranged one above the other approximately at 50% of the length of the sections (2-5).
- Crane according to either of Claims 1 and 2, characterized in that the respective securing and locking unit consists of a hydraulic block with cylinders opposite one another for the retractable and extendable pins formed by their pistons and arresting the respective section (2-5), and of a hydraulic piston/cylinder unit, arranged perpendicularly thereto, for actuating the respective locking pin (2A-5A).
- Crane according to one of the preceding Claims 1 to 5, characterized in that the radial piston/cylinder unit for retracting the respective locking pin (2A-5A) can only be actuated when the respective securing and locking element is coupled to the section (2-5) to be telescopically extended or retracted via the arresting pins.
- Crane according to Claims 2 and 4, characterized in that the guide and tension device consists of a transverse spar (11) fastened to the front end of the piston rod (16) and of two guide elements (9, 9') which lie in each case on the right-hand side and left-hand side of the cylinder housing (6) and whose front end is connected to the transverse spar (11), on the one hand, and whose front end region is connected to the second securing and locking unit (8.2), on the other hand, and whose rear ends are connected to the first securing and locking unit (8.1).
- Crane according to Claims 2 to 7, characterized in that the transverse spar (11) consists of a flat profile stiffened with a web plate (30).
- Crane according to one of Claims 2 to 8, characterized in that the guide elements (9, 9') are designed as box profiles.
- Crane according to Claim 9, characterized in that the box profiles are provided on the inside with stiffened plates.
- Crane according to one of Claims 2 to 10, characterized in that the securing and locking unit (8.1) arranged at the inner end has a bush (28) which is displaceable on the cylinder housing (6) and is connected to the two guide elements (9, 9'), and both securing and locking units (8.1, 8.2) have a sliding piece (21) which is connected to an actuating element and is in mechanical operative connection with two securing pins (13, 13') and the gripper (24).
- Crane according to Claim 11, characterized in that a web plate (29, 29') lying in a horizontal plane and provided with a guide groove (27, 27') is in each case arranged on the right-hand side and left-hand side of the sliding piece (21), the guide groove (27, 27') interacting with a guide ring (22, 22') arranged on the respective securing pin (13, 13'), and in that a forked plate (30) provided with a guide ring (23) is arranged perpendicularly to the two web plates (29, 29') on the sliding piece (21), the guide ring (23) interacting with a guide groove (33) arranged on a gripper (24) guided in a bush (32).
- Crane according to Claims 11 and 12, characterized in that each guide groove (27, 27', 33) has a section running at an angle to the direction of movement of the sliding piece (21) and a section running parallel to the direction of movement of the sliding piece (21), the sequence of sections running at an angle and in parallel at the guide grooves (27, 27') of the two web plates (29, 29') being the other way round from the sequence in the guide groove (33) of the gripper (24).
- Crane according to one of Claims 11 to 13, characterized in that the actuating element for the sliding piece (21) is a piston/cylinder unit (14) connected to the respective securing and locking unit (8.1, 8.2).
- Crane according to Claim 14, characterized in that the respective piston/cylinder unit (14) is arranged so as to lie parallel to the cylinder housing (6) of the piston/cylinder unit moving the sections (2-5).
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19722889 | 1997-05-28 | ||
DE19722889 | 1997-05-28 | ||
DE19824671 | 1998-05-26 | ||
DE19824671A DE19824671C2 (en) | 1997-05-28 | 1998-05-26 | Crane with a telescopic boom |
PCT/DE1998/001498 WO1998054081A1 (en) | 1997-05-28 | 1998-05-27 | Crane with telescope jib |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0984895A1 EP0984895A1 (en) | 2000-03-15 |
EP0984895B1 true EP0984895B1 (en) | 2002-04-17 |
Family
ID=26037039
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98934847A Expired - Lifetime EP0984895B1 (en) | 1997-05-28 | 1998-05-27 | Crane with telescope jib |
Country Status (6)
Country | Link |
---|---|
US (1) | US6189712B1 (en) |
EP (1) | EP0984895B1 (en) |
JP (1) | JP4068161B2 (en) |
AT (1) | ATE216350T1 (en) |
DE (1) | DE29824453U1 (en) |
WO (1) | WO1998054081A1 (en) |
Cited By (1)
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WO2009056122A1 (en) * | 2007-10-31 | 2009-05-07 | Terex-Demag Gmbh | Crane having telescoping boom |
Families Citing this family (30)
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EP1072554B1 (en) * | 1999-07-30 | 2004-03-17 | Liebherr-Werk Ehingen GmbH | Crane with telescopic boom |
FR2797862B1 (en) * | 1999-09-01 | 2001-11-16 | Ppm | METHOD OF TELESCOPING A CRANE BOOM, DEVICE FOR ITS IMPLEMENTATION AND CRANE BOOM BY APPLYING |
DE10048224B4 (en) * | 2000-09-21 | 2005-06-02 | Terex-Demag Gmbh & Co. Kg | Locking unit for a telescopic boom of a crane |
GB0122511D0 (en) * | 2000-09-21 | 2001-11-07 | Atecs Mannesmann Ag | Locking unit for a telescopic system |
DE10104310B4 (en) * | 2001-01-22 | 2005-02-03 | Terex-Demag Gmbh & Co. Kg | Mobile crane with telescopic boom |
US6601719B2 (en) * | 2001-09-21 | 2003-08-05 | Link-Belt Construction Equipment Co., L.P., Lllp | Locking and latching system for a telescoping boom |
US20030071004A1 (en) * | 2001-10-12 | 2003-04-17 | Higgins David J. | Extensible column |
WO2007052339A1 (en) * | 2005-11-01 | 2007-05-10 | Kato Works Co., Ltd. | Boom telescoping device for crane |
US7642987B2 (en) * | 2007-01-31 | 2010-01-05 | Jerry Newman | Monopole tower system |
US9312596B2 (en) | 2007-01-31 | 2016-04-12 | Jerry Newman | Mobile tower system |
US8467741B2 (en) * | 2007-01-31 | 2013-06-18 | Jerry Newman | Mobile tower system |
US20110126700A1 (en) * | 2007-07-12 | 2011-06-02 | Johannsen Thorkil J | Undercarriage for a telescopic frame |
CA2697303C (en) * | 2007-09-05 | 2015-02-17 | Palfinger Ag | Profile shape for a crane boom |
DE202008016604U1 (en) * | 2008-12-15 | 2009-03-19 | Terex Demag Gmbh | telescopic boom |
DE102009006292B4 (en) * | 2009-01-27 | 2015-03-26 | Manitowoc Crane Group France Sas | Locking system for telescopic crane jib with sliding locking unit |
DE102009008557B4 (en) * | 2009-02-12 | 2010-10-21 | Montanhydraulik Gmbh | locking head |
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DE102013006259A1 (en) * | 2013-04-11 | 2014-10-16 | Liebherr-Werk Ehingen Gmbh | Telescopic boom and crane |
DE102013011173B4 (en) * | 2013-07-04 | 2019-05-23 | Liebherr-Werk Ehingen Gmbh | Method for assembling a crane as well as articulation, telescopic boom and crane |
RU2646710C2 (en) | 2013-08-27 | 2018-03-06 | Сюйчжоу Хэви Машинери Ко., Лтд. | Single-cylinder plug pin type telescopic arm, telescopic method thereof and crane having telescopic arm |
CN103964323B (en) * | 2014-05-28 | 2015-12-30 | 徐州重型机械有限公司 | A kind of method to set up of telescopic boom, telescopic boom and hoisting crane |
CN104649158B (en) * | 2015-03-03 | 2017-08-08 | 徐州重型机械有限公司 | Cylinder head body, single cylinder bolt system and crane |
US10106378B2 (en) | 2015-11-03 | 2018-10-23 | General Electric Company | System and method for lifting with load moving machine |
CN105565188B (en) * | 2015-12-29 | 2018-04-13 | 中联重科股份有限公司 | Prevent oil cylinder from going out the structures and methods and arm of joint arm |
RU2723523C1 (en) * | 2019-12-23 | 2020-06-11 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Тихоокеанский государственный университет" | Hoisting machine boom |
DE102020129762B3 (en) * | 2020-11-11 | 2022-02-17 | Tadano Demag Gmbh | Telescopic boom of a mobile crane |
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DE1268804B (en) * | 1965-09-17 | 1968-05-22 | Beteiligungs & Patentverw Gmbh | Telescopic boom |
DE1944463A1 (en) * | 1969-09-02 | 1971-03-04 | Krupp Gmbh | Multiple telescopic boom, especially for a truck crane |
GB1390469A (en) * | 1972-09-28 | 1975-04-16 | Gottwald Kg Leo | Telescopic crane jibs |
US4036372A (en) * | 1975-12-15 | 1977-07-19 | Clark Equipment Company | Extension and retraction means for the telescopic boom assembly of a crane |
DE4344795A1 (en) * | 1993-12-28 | 1995-06-29 | Liebherr Werk Ehingen | Mobile crane with a telescopic boom |
DE19631547B4 (en) * | 1996-07-24 | 2004-05-06 | Terex-Demag Gmbh & Co. Kg | Telescopic boom, especially for stationary or mobile cranes |
DE19641193C2 (en) * | 1996-09-24 | 2002-04-25 | Mannesmann Ag | Telescopic boom, especially for stationary or mobile cranes |
DE19641191A1 (en) * | 1996-09-24 | 1998-03-26 | Mannesmann Ag | Telescopic jib for stationary or mobile cranes |
DE19824671C2 (en) * | 1997-05-28 | 2002-09-19 | Mannesmann Ag | Crane with a telescopic boom |
-
1998
- 1998-05-26 DE DE29824453U patent/DE29824453U1/en not_active Expired - Lifetime
- 1998-05-27 EP EP98934847A patent/EP0984895B1/en not_active Expired - Lifetime
- 1998-05-27 WO PCT/DE1998/001498 patent/WO1998054081A1/en active IP Right Grant
- 1998-05-27 JP JP50010799A patent/JP4068161B2/en not_active Expired - Lifetime
- 1998-05-27 US US09/424,604 patent/US6189712B1/en not_active Expired - Lifetime
- 1998-05-27 AT AT98934847T patent/ATE216350T1/en not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009056122A1 (en) * | 2007-10-31 | 2009-05-07 | Terex-Demag Gmbh | Crane having telescoping boom |
DE102007052954B3 (en) * | 2007-10-31 | 2009-07-09 | Terex Demag Gmbh | Crane with telescopic boom |
Also Published As
Publication number | Publication date |
---|---|
JP2001526615A (en) | 2001-12-18 |
JP4068161B2 (en) | 2008-03-26 |
ATE216350T1 (en) | 2002-05-15 |
US6189712B1 (en) | 2001-02-20 |
WO1998054081A1 (en) | 1998-12-03 |
DE29824453U1 (en) | 2001-03-01 |
EP0984895A1 (en) | 2000-03-15 |
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