EP1293471B1 - Teleskopausleger - Google Patents
Teleskopausleger Download PDFInfo
- Publication number
- EP1293471B1 EP1293471B1 EP02090290A EP02090290A EP1293471B1 EP 1293471 B1 EP1293471 B1 EP 1293471B1 EP 02090290 A EP02090290 A EP 02090290A EP 02090290 A EP02090290 A EP 02090290A EP 1293471 B1 EP1293471 B1 EP 1293471B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- telescopic boom
- piston
- securing
- locking
- 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
Links
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000004323 axial length Effects 0.000 description 6
- 238000012546 transfer Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009964 serging Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
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
- B66C23/64—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
Definitions
- the invention relates to a telescopic boom, in particular a telescopic boom for a mobile crane, referred to in the preamble of claim 1 Features, see e.g. DE 198 24 671 A1.
- Telescopic booms with hydraulic telescoping systems have been around for many years known.
- DE 198 24 672 A1 a crane with a telescopic boom described.
- the telescopic boom has a base box in which several Inner boxes are guided substantially coaxially with each other.
- the inner boxes can successively by a hydraulic cylinder / piston system optionally on and be extended.
- the hydraulic cylinder / piston system is here at one his two axial ends (foot area) fixed in the base box and with his extendable part by means of a coupling device to each to be moved Inner box can be coupled.
- This coupling device is also called backup and Locking unit called.
- the extendable part of the cylinder / piston system can optionally be in the piston rod or in the hydraulic cylinder.
- the Inner boxes can each in their retracted and in their extended position by an operable by the locking and locking unit Verbolzungs experienced opposite the next larger inner box or (in the case of the outermost inner box) with the base box of the telescopic boom be mechanically locked so that there is no relative displacement against each other more is possible.
- the Verbolzungs Immediately before the procedure of an inner box is the Verbolzungs experienced after the coupling of the fuse and Locking unit unlocked by the latter.
- the extension length of the hydraulic Cylinder / piston system corresponds in this known solution of the axial length the longest to be moved inner box. In the extended position is the Length of the hydraulic cylinder / piston system thus almost twice as long.
- the extension of telescopic shots must be partially under load, there is a particular problem with regard to the buckling stiffness of the cylinder / piston system.
- the Austeleskopieren the individual inner boxes takes place in contrast to the telescopic boom according to DE 198 24 672 A1 in this solution not in a single step, but in two Partial steps.
- the second locking and locking unit is like this designed so that it can unlock the Verbolzungs manufactured after they has docked out to be moved inner box. In a second stroke she can do the bring out to be moved inner box in its final position and there again lock.
- the hydraulic cylinder / piston unit then returns to its position Starting position back to with the lower locking and locking unit to grab the next inner box.
- the time required for the extension of a Inner box is almost the same size in this telescopic boom as in the Telescopic boom according to DE 198 24 672 A1.
- the advantage of this solution is however to be seen in that the length of the hydraulic cylinder / piston system is halved and thereby for the entire hydraulic cylinder / piston system also as a result of Gain in buckling stiffness due to the shortened overall length (possibility for Reduction in cross section) a drastic reduction in weight is achieved.
- Object of the present invention is to provide a telescopic boom further develop generic type so that the time for the extension and retraction of the Inner boxes in their or from their maximum extended position is significantly shortened.
- the core of the present invention is that the hydraulic Cylinder / piston system is designed as a two-stage cylinder / piston system, ie has two extendable parts.
- This cylinder / piston system consists of a Outer cylinder, an inner cylinder and a piston rod.
- the piston rod is in Inner cylinder out while the inner cylinder is guided in the outer cylinder and thus forming its piston.
- the inner cylinder and the outer cylinder are hydraulic individually, ie independently controllable.
- the outer cylinder and the Piston rod here form the two extendable parts of the cylinder / piston system and are each with one of the two locking and locking units Mistake.
- the inner cylinder represents the fixed part of the cylinder / piston system is thus fixed in the base box of the telescopic boom.
- each inner box in each case at least one insectsfahr ein between the retraction position and the maximum extension position is and of each of the two Locking and locking units for coupling and uncoupling can be approached to the respective inner box from one locking and locking unit to the other to hand over.
- Each locking and locking unit is thus only for a part the entire travel distance from the retracted position to the maximum extended position responsible.
- the two fuse and Locking units completely independent of each other to proceed. This can be ensured that each one of the two backup and Locking units is coupled to the respective to be moved inner box and this can proceed while at the same time the other backup and Locking unit performs a Leerhub.
- the two fuse and Locking units give the respective inner box when extending and retracting each further to each other, so that depending on the selected embodiment of the invention if necessary for the short period of delivery, in which the inner box in one Intermediate extension position may need to be locked, a stoppage of Extending or retracting movement is recorded.
- the duration of the extension or Retraction movement of a single inner box thus corresponds in practice to the value achievable by a hydraulic cylinder / piston system whose axial Length of the length of the largest inner box corresponds, as with the Telescopic boom according to DE 198 24 672 A1 is the case. Due to the shorter axial length of the extendable parts is in the inventive solution for Ensuring sufficient buckling strength is not so massive and therefore Heavy version of the cylinder / piston system necessary, as in the known system is the case. Thus, the present invention enables a corresponding weight savings while ensuring a virtually unchanged short extension or retraction time.
- the intended extension lengths of the two extendable parts different from the cylinder / piston system. It is recommended, this extendible length to about 40% - 60% of the maximum extension length of that Inner box with the largest extension length set. Particularly preferred is a Extension length of the two extendable parts in the order of about 50% the maximum extension length of an inner box.
- the Cylinder / piston system with its inner cylinder via a pressure frame, so one for transfer in particular of compressive forces suitable holding construction in Foot area of the ground box to fix.
- the piston rod at its free end one of the two locking and locking units, is in this case after down from its retracted position to the foot of the base box extendable.
- the outer cylinder at his for the Inner cylinder open end with the second locking and locking unit is provided, relative to the inner cylinder in the direction of the head of the Telescopic boom, so seen in the working position is extendable upwards. at This solution is for fixing the cylinder / piston system only relative short pressure frame is needed, which is preferably about half the axial length an inner box extends.
- the cylinder / piston system fixed with its inner cylinder directly in the foot area of the basic box is. It therefore requires this no pressure frame construction.
- the outer cylinder is off its retracted position towards the head of the telescopic boom extendable and carries one of the two safety and locking units. These can be arranged on the side facing the head of the telescopic boom.
- the piston rod which is actuated by the cylinder space of the inner cylinder, is at this solution sliding and sealed by both axial ends of the Passed outside cylinder and is towards the head of the Telescopic boom extendable.
- a pull frame arranged, which extends in the direction of the base of the base box and at its free, so lower end with the second backup and Locking unit is provided.
- the length of this Buchrahmens corresponds here about the extension length of the longest inner box.
- the second variant of the invention may also be modified in this way be that a locking and locking unit at the bottom of the Outside cylinder is arranged.
- the length of the draw frame for the second locking and locking unit connected to the piston rod is approximately halved, that is about half the maximum extension length of the inner box with the largest extension length.
- the cylinder / piston system with its inner cylinder via a pressure frame is fixed in the foot area of the basic box.
- the extension direction of the extendable parts the cylinder / piston system are here compared to the arrangement according to the first variant vice versa. Therefore, the printing frame for attaching the Inner cylinder not (based on the working position of the telescopic boom) on attached to the lower end of the inner cylinder, but at its upper end, where itself the end open to the piston rod is located. This extends the required length for the printing frame corresponding to practically the entire Extension length of a basic box.
- the piston rod is in this case upwards in Direction to the head of the telescopic boom extendable.
- the free end of the Piston rod is coupled to a pull frame that extends in the direction of Foot portion of the base box extends and at the lower (free) end of a the two locking and locking units is attached.
- the second Locking and locking unit is located at the bottom (free) end of the down to the foot of the base box extendable outer cylinder.
- the applied forces are in the extension movement of an inner box considerably higher than during a retraction movement. Therefore, in the first variant of the Invention charged the piston rod in the extension movement only by tensile forces, which are irrelevant in terms of buckling resistance. The at the entrance occurring and relevant for the buckling resistance compressive forces fall advantageously significantly lower. In contrast, in the second variant the piston rod in the extension movement by the comparatively higher Pressure forces loaded. Therefore, there must be a correspondingly more massive execution of the Piston rod are provided, which leads to corresponding losses in the aimed at saving weight.
- FIG. 1 shows a cylinder / piston system in three different extended positions 10, a fixedly arranged inner cylinder 12, an outer cylinder 11 and a piston rod 13 has.
- the inner cylinder 12 is above a pressure frame 14th by means of a fastening 17 in the base box of a not shown Telescopic jib fixable.
- the piston rod 13 is out of the inner cylinder 12 after down to the foot of the basic box, so close to the attachment 17 moveable.
- a lower securing and Locking unit 9 is arranged at the free end of the piston rod 13 .
- the inner cylinder 12 provides the piston for the Outer cylinder 11 is the pressure chambers of the inner cylinder 12 and the outer cylinder 11 are individually actuated by Hydraulikzu- and -ableitungen not shown, so that the piston rod 13 and the outer cylinder 11 relative to the inner cylinder 12th can be moved independently of each other.
- Telescopic boom seen is another safety and locking unit on arranged lower end of the outer cylinder 11.
- the middle illustration in FIG. 1 shows the retracted position of the piston rod 13 and the outer cylinder 11. In the upper illustration, only the piston rod is fully extended. In the In the lower illustration, the outer cylinder also has its maximum extension position reached.
- the operation of the piston-cylinder system 10 is best understood from the Illustrations in Fig. 2 explained.
- FIG. 2 shows the cylinder / piston system 10 according to FIG. 1 in a telescopic boom 1 shown installed, the base box 2 and a total of four telescopic Inner boxes 3 - 6, the sliding and substantially coaxial with each other or in Base box 2 are performed.
- the innermost inner box 6 has at its free end a stocked with pulleys head 16.
- the base box 2 is at its bottom provided with a bearing 19 for the articulation of a rocker cylinder, not shown, with the help of the telescopic boom 1 about a horizontal axis of a pivot bearing 20 in the respective angular position for the desired working position can be brought.
- the reference numeral 7 foot portion of the hydraulic cylinder / piston system 10, i.
- the lower end of the inner cylinder 12 is connected to the pressure frame 14th firmly connected, in turn, on the attachment 17 in the foot region 15 of the Base box 2 is attached.
- the upper illustration in Fig. 2 shows the Telescopic boom 1 in the fully retracted position, while the other Representations of different stages of extension of individual inner boxes play.
- the head 16 of the Telescopic boom 1 carries to be able to extend, the lower securing and Locking unit 9 into the region of the lower end of the inner box. 6 be moved.
- the lower securing and locking unit 9 couples from the Inner box 6 from while the upper locking and locking unit 8 at the inner box 6 coupled, the bolt solves and the inner box 6 on extends until the reproduced in the middle representation position is reached.
- the bolt solves and the inner box 6 on extends until the reproduced in the middle representation position is reached.
- the uncoupling of the locking and locking unit 9 only then is possible when the upper locking and locking unit 8 at the respective The inner box is docked and holds it securely.
- Extending the inner box 6 through the outer cylinder 11 drives the piston rod 13 with the lower securing and locking unit 9 in a suitable position for coupling the next larger inner box 5, as also from the Mean representation of Figure 2 shows.
- Fig. 3 is a cylinder / piston system 10 for actuating a telescopic boom reproduced according to the second variant of the invention.
- the inner cylinder 12 immediately above the attachment 17 with the foot of a not closer connected basic box of a telescopic boom connected.
- the Piston rod 13, which is actuated via the inner cylinder 12 is through both axial Ends of the outer cylinder 11 sealed and slidably guided.
- the lower one Locking and locking unit 9 is at the free end of a pull frame 18th arranged to the left, so also towards the head of the Telescopic boom extendable end of the piston rod 13 is coupled and over almost the entire extension length of a telescopic section extends. It is obvious that in this solution, a gripping of the respective inner box by one of two locking and locking units 8, 9, the subsequent procedure over a partial route and the subsequent transfer to the other backup and Locking unit 8, 9 can take place, the second part of the extension or Entry movement accomplished.
- Fig. 4 the different extension positions are one with a Cylinder / piston system 10 according to FIG. 3 equipped telescopic boom. 1 shown as corresponding in Fig. 2 for the Cylinder / piston system 10 of FIG. 1 is the case.
- the procedure of Inner boxes 2 - 6 by means of the two locking and locking units 8, 9 takes place here in the same way, so that the comments on Fig. 2 can be referenced.
- the two Locking and locking units 8, 9 because of in Fig. 3 opposite Fig. 1 changed structure of the cylinder / piston system 10 in another way the moving elements (outer cylinder 11 and piston rod 13) are coupled.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
- Actuator (AREA)
Description
- Fig. 1
- ein Zylinder/Kolben-System in einer ersten Variante der Erfindung in verschiedenen Ausfahrstellungen,
- Fig. 2
- Längsschnitte durch einen Teleskopausleger mit einem Zylinder/Kolben-System gemäß Fig. 1 in verschiedenen Ausfahrstellungen,
- Fig. 3
- ein Zylinder/Kolben-System gemäß einer zweiten Variante der Erfindung und
- Fig. 4
- Längsschnitte durch einen Teleskopausleger mit einem Zylinder/Kolbensystem gemäß Fig. 3 in verschiedenen Ausfahrstellungen.
1 | Teleskopausleger |
2 | Grundkasten |
3 | Innenkasten |
4 | Innenkasten |
5 | Innenkasten |
6 | Innenkasten |
7 | Fußbereich des hydraulischen Zylinder/Kolben-Systems |
8 | obere Sicherungs- und Verriegelungseinheit |
9 | untere Sicherungs- und Verriegelungseinheit |
10 | Hydraulisches Zylinder/Kolben-System |
11 | Außenzylinder |
12 | Innenzylinder |
13 | Kolbenstange |
14 | Druckrahmen |
15 | Fußbereich Grundkasten |
16 | Kopf des Teleskopauslegers |
17 | Befestigung im Grundkasten |
18 | Zugrahmen |
19 | Lager |
20 | Drehlager |
Claims (6)
- Teleskopausleger, insbesondere Teleskopausleger (1) für einen Mobilkran, mit einem Grundkasten (2), in dem ein oder mehrere Innenkästen (3 - 6) im wesentlichen koaxial ineinander geführt sind, die nacheinander durch ein hydraulisches Zylinder/Kolben-System (10) wahlweise ein- und ausfahrbar sind, wobei das hydraulische Zylinder/Kolben-System (10) an einem seiner beiden axialen Enden (Fußbereich 7) im Grundkasten (2) fixiert ist und mit seinem mindestens einen ausfahrbaren Teil mittels einer Sicherungs- und Verriegelungseinheit (8, 9) an den jeweils zu verfahrenden Innenkasten (3 - 6) ankoppelbar ist und der jeweilige Innenkasten (3 - 6) in mindestens einer eingefahrenen und in seiner ausgefahrenen Stellung jeweils durch eine von zwei Sicherungs- und Verriegelungseinheiten (8, 9) betätigbaren Verbolzungseinrichtung gegenüber dem nächstgrößeren Innenkasten oder dem Grundkasten mechanisch verriegelbar und unmittelbar vor dem Verfahren nach Durchführung des Ankoppelns entriegelbar ist,
dadurch gekennzeichnet, dass das hydraulische Zylinder/Kolben-System (10) ein zwei ausfahrbare Teile aufweisendes zweistufiges Zylinder/Kolben-System ist, das einen Außenzylinder (11), einen Innenzylinder (12), der den Kolben des Außenzylinders (11) bildet, und eine Kolbenstange (13), die im Innenzylinder (12) geführt ist, umfasst und dessen Innenzylinder (12) und Außenzylinder (11) einzeln ansteuerbar sind, wobei der Außenzylinder (11) und die Kolbenstange (13) die beiden ausfahrbaren Teile des Zylinder/Kolben-Systems (10) bilden und jeweils mit einer der beiden Sicherungs- und Verriegelungseinheiten (8, 9) versehen sind und wobei für jeden Innenkasten (3 - 6) jeweils mindestens eine Zwischenausfahrstellung besteht, die von jeder der beiden Sicherungs- und Verriegelungseinheiten (8, 9) zum An- und Abkoppeln zwecks Übergabe des Innenkastens (3 - 6) von einer an die andere der beiden Sicherungs- und Verriegelungseinheiten (8, 9) anfahrbar ist. - Teleskopausleger nach Anspruch 1,
dadurch gekennzeichnet, dass die Innenkästen (3 - 6) in der Zwischenausfahrstellung durch die beiden Sicherungs- und Verriegelungseinheiten (8, 9) gegenüber dem jeweiligen nächstgrößeren Innenkasten (4 - 6) oder dem Grundkasten (2) ver- und entriegelbar sind. - Teleskopausleger nach einem der Ansprüche 1 - 2,
dadurch gekennzeichnet, dass die Ausfahriänge der beiden ausfahrbaren Teile (11, 13) des Zylinder/Kolben-Systems (10) jeweils im Bereich von 40% - 60%, insbesondere bei 50% der maximalen Ausfahrlänge desjenigen Innenkastens (3 - 6) mit der größten Ausfahrlänge liegt. - Teleskopausleger nach einem der Ansprüche 1 - 3,
dadurch gekennzeichnet, dass das Zylinder/Kolben-System (10) mit seinem Innenzylinder (12) über einen im Bereich seines für die Kolbenstange (13) offenen Endes befestigten Druckrahmen (14) im Fußbereich (15) des Grundkastens (2) fixiert ist, dass die Kolbenstange (13) an ihrem freien Ende eine (9) der beiden Sicherungs- und Verriegelungseinheiten (8, 9) aufweist und nach unten bis in den Fußbereich (15) des Grundkastens (2) ausfahrbar ist und dass der Außenzylinder (11), der an seinem für den Innenzylinder (12) offenen Ende mit der zweiten Sicherungsund Verriegelungseinheit (8) versehen ist, relativ zum Innenzylinder (12) in Richtung auf den Kopf (16) des Teleskopauslegers (1) ausfahrbar ist. - Teleskopausleger nach einem der Ansprüche 1 - 3,
dadurch gekennzeichnet, dass das Zylinder/Kolben-System (10) mit seinem Innenzylinder (12) unmittelbar im Fußbereich (15) des Grundkastens (2) fixiert ist, dass der Außenzylinder (11), der an seinem dem Kopf (16) des Teleskopauslegers (1) zugewandten Ende mit einer (8) der beiden Sicherungs- und Verriegelungseinheiten (8, 9) versehen ist, aus seiner eingefahrenen Stellung in Richtung auf den Kopf (16) des Teleskopauslegers (1) ausfahrbar ist und dass die Kolbenstange (13), die gleitend und abgedichtet durch beide axialen Enden des Außenzylinders (11) geführt ist, aus dem Innenzylinder (12) in Richtung auf den Kopf (16) des Teleskopauslegers (1) ausfahrbar und an ihrem freien Ende mit einem Zugrahmen (18) versehen ist, der sich in Richtung auf den Fußbereich (15) des Grundkastens (2) erstreckt und an seinem freien Ende mit der zweiten Sicherungs- und Verriegelungseinheit (9) versehen ist. - Teleskopausleger nach einem der Ansprüche 1 - 3,
dadurch gekennzeichnet, dass das Zylinder/Kolben-System (10) mit seinem Innenzylinder (12) unmittelbar im Fußbereich (15) des Grundkastens (2) fixiert ist, dass der Außenzylinder (11), der an seinem dem Fußbereich (15) des Grundkastens (2) zugewandten Ende mit einer (9) der beiden Sicherungs- und Verriegelungseinheiten (8, 9) versehen ist, aus seiner eingefahrenen Stellung in Richtung auf den Kopf (16) des Teleskopauslegers (1) ausfahrbar ist und dass die Kolbenstange (13), die gleitend und abgedichtet durch beide axialen Enden des Außenzylinders (11) geführt ist, aus dem Innenzylinder (12) in Richtung auf den Kopf (16) des Teleskopauslegers (1) ausfahrbar und an ihrem freien Ende mit einem Zugrahmen (18) versehen ist, der sich in Richtung auf den Fußbereich (15) des Grundkastens (2) etwa über die halbe maximale Ausfahrlänge desjenigen Innenkastens (3 - 6) mit der größten Ausfahrlänge erstreckt und an seinem freien Ende mit der zweiten Sicherungs- und Verriegelungseinheit (8) versehen ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10142847A DE10142847C1 (de) | 2001-08-29 | 2001-08-29 | Teleskopausleger |
DE10142847 | 2001-08-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1293471A1 EP1293471A1 (de) | 2003-03-19 |
EP1293471B1 true EP1293471B1 (de) | 2005-05-25 |
Family
ID=7697365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02090290A Expired - Lifetime EP1293471B1 (de) | 2001-08-29 | 2002-08-15 | Teleskopausleger |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1293471B1 (de) |
AT (1) | ATE296257T1 (de) |
DE (2) | DE10142847C1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9085443B2 (en) | 2009-01-27 | 2015-07-21 | Manitowoc Crane Group France Sas | Locking system for telescopic crane jib with movable locking unit |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202008016604U1 (de) | 2008-12-15 | 2009-03-19 | Terex Demag Gmbh | Teleskopausleger |
EP2465809B1 (de) * | 2010-12-17 | 2014-02-12 | Manitowoc Crane Group France SAS | Teleskopiersystem für Kranausleger und Zusatzausleger |
DE102013011173B4 (de) * | 2013-07-04 | 2019-05-23 | Liebherr-Werk Ehingen Gmbh | Verfahren zur Montage eines Krans sowie Anlenkschuss, Teleskopausleger und Kran |
CN109532356B (zh) * | 2018-12-11 | 2024-02-23 | 科星汽车设备(珠海)有限公司 | 具有新型升降结构的拆胎机 |
CN112938790B (zh) * | 2021-01-27 | 2023-06-13 | 江苏正峰液压科技有限公司 | 用于起重机伸缩臂的液压驱动装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE396801C (sv) * | 1976-02-03 | 1986-05-29 | Hiab Foco Ab | Dubbelverkande hydraulcylinder med tva koncentriska mantlar |
DE2647734C2 (de) * | 1976-10-22 | 1978-11-23 | Hermann Schleicher Gmbh & Co Maschinenfabrik, 8520 Erlangen | Vorrichtung zum periodischen Längsbewegen von stangen- oder bandförmigen Werkstücken |
DE19824672A1 (de) * | 1997-05-28 | 1998-12-03 | Mannesmann Ag | Kran mit einem Teleskopausleger |
EP1072554B1 (de) * | 1999-07-30 | 2004-03-17 | Liebherr-Werk Ehingen GmbH | Kran mit einem Teleskopausleger |
-
2001
- 2001-08-29 DE DE10142847A patent/DE10142847C1/de not_active Expired - Fee Related
-
2002
- 2002-08-15 EP EP02090290A patent/EP1293471B1/de not_active Expired - Lifetime
- 2002-08-15 DE DE50203183T patent/DE50203183D1/de not_active Expired - Lifetime
- 2002-08-15 AT AT02090290T patent/ATE296257T1/de not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9085443B2 (en) | 2009-01-27 | 2015-07-21 | Manitowoc Crane Group France Sas | Locking system for telescopic crane jib with movable locking unit |
Also Published As
Publication number | Publication date |
---|---|
EP1293471A1 (de) | 2003-03-19 |
DE50203183D1 (de) | 2005-06-30 |
ATE296257T1 (de) | 2005-06-15 |
DE10142847C1 (de) | 2002-11-21 |
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