EP1055635B1 - Grue avec une flèche télescopique - Google Patents

Grue avec une flèche télescopique Download PDF

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Publication number
EP1055635B1
EP1055635B1 EP00250048A EP00250048A EP1055635B1 EP 1055635 B1 EP1055635 B1 EP 1055635B1 EP 00250048 A EP00250048 A EP 00250048A EP 00250048 A EP00250048 A EP 00250048A EP 1055635 B1 EP1055635 B1 EP 1055635B1
Authority
EP
European Patent Office
Prior art keywords
coupling
locking
crane according
displacement device
locking bolt
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
Application number
EP00250048A
Other languages
German (de)
English (en)
Other versions
EP1055635A2 (fr
EP1055635A3 (fr
Inventor
Frank Conrad
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Terex Demag GmbH and Co KG
Original Assignee
Terex Demag GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE10007773A external-priority patent/DE10007773B4/de
Application filed by Terex Demag GmbH and Co KG filed Critical Terex Demag GmbH and Co KG
Publication of EP1055635A2 publication Critical patent/EP1055635A2/fr
Publication of EP1055635A3 publication Critical patent/EP1055635A3/fr
Application granted granted Critical
Publication of EP1055635B1 publication Critical patent/EP1055635B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00Cranes 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
    • B66C23/62Constructional features or details
    • B66C23/64Jibs
    • B66C23/70Jibs constructed of sections adapted to be assembled to form jibs or various lengths
    • B66C23/701Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
    • B66C23/708Jibs 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.
  • a crane with a telescopic boom is known from DE 198 24 672 A1.
  • This consists of a basic box and arranged therein, individual telescopic shots, which after loosening of arresting Bolt connections by coupling with only one single-stage hydraulic piston-cylinder unit retractable and retractable and in the extended or retracted position are lockable, wherein the cylinder housing of the piston-cylinder unit with his rear end is attached to the inner end of the basic boom and the Piston rod at the front end with a parallel to the piston-cylinder unit lying guiding and pulling device is connected, at the inner end of a Coupling and locking unit is attached, which with recordings of telescopic shots can be coupled and locked.
  • the coupling and Locking unit has two mechanically via a grooves exhibiting Slider actuatable coupling pins on which in a horizontal plane lying right and left in arranged at the inner end of each shot Recordings can be moved in and out.
  • the actuation of the sliding piece takes place via an axially connected to the coupling and locking unit Piston-cylinder unit, wherein the means for retracting the spring-loaded Locking bolt can only be operated when the clutch and Locking unit with the recordings of the out-of-pocket or telescoping Schusses is coupled and releasing the coupling pin with the respective shot can only take place when the respective spring-loaded locking bolt is set.
  • A1 crane with telescopic boom are the single telescopic shots after releasing arresting Bolt connections with only one single-stage piston-cylinder unit off and retractable and in each off or retracted positions by in the direction of her locked positions bolted spring-loaded locking bolts.
  • the Piston rod of the single-stage piston-cylinder unit is at the inner end of the articulated outer shot complete boom linkage.
  • a Carrier device which can be coupled with recordings of austeleskopierbaren shots is located in the region of the end of the cylinder from which the piston rod exit.
  • the entrainment device consists of a hydraulic block with each other opposite cylinders for the one and the piston formed by the piston extendable the respective shot arresting bolt and a perpendicular thereto arranged hydraulic piston-cylinder unit for actuating the respective Locking bolt.
  • the hydraulic elements of the driver stand so operatively connected that the radially located piston-cylinder unit for retraction of the respective locking bolt can only be operated when the Carrier device with the off or detailedteleskopierenden shot over the locking pin is coupled.
  • a telescopic boom known from DE 196 41 191 A1
  • the shots to be telescoped by means of two Endless ropes, each with one extension and retraction side in conjunction with a cable drive and pulleys extendable and retractable.
  • the Shots In the extended and retracted position are the Shots by means of a locking device associated with each shot against Relative axial movement detected.
  • the rope drive and two pulleys are on Base of the base box and a third pulley is on the rope drive opposite end of a cantilevered within the shots and am Base box rigidly mounted guide tube arranged.
  • the benchmarks of Rope ends are located on a holding device with a gripping device provided slidably mounted on the guide tube.
  • the object of the invention is to provide a crane with a telescopic boom so to further develop that by simplifying the coupling and Locking unit space and weight can be saved.
  • the coupling part with a coaxial movable locking bolt of a locking element form-fitting is detachable.
  • the special feature of this arrangement is that in unlocked position the locking bolt in combination with the coupling part between the coupling Displacement device and the respective in and out bagschuß shot represents. In the transition phase between unlocking and locking comes each a projecting portion of the coupling part and the locking bolt form fit to the plant and thus forms the safeguard against falling in of the Telescopic.
  • the advantage of the proposed arrangement is the fact that fewer parts needed so that weight is saved without the required Safety concept to affect the secure bolting of the shots. Also at the new arrangement ensures that the respective shot either locks or coupled. Another advantage is the space savings, as in the usual Separately arranged elements more space was needed, resulting in the smallest Telescoping shot can cause problems.
  • the displacement device for moving the shots can be a rope drive, a one or Multi-stage piston-cylinder unit or several piston-cylinder units to be operated in parallel be.
  • the positive connection of the coupling part takes place with the Locking bolt on a mushroom-shaped at the inner end of the locking bolt arranged coupling piece, which is arranged in a coupling part in the recess intervenes.
  • the Locking bolt On a mushroom-shaped at the inner end of the locking bolt arranged coupling piece, which is arranged in a coupling part in the recess intervenes.
  • only one Provide locking element which in each prosecutteleskopierenden shot is arranged centrally above or below the center.
  • the accompanying recording of the to telescoping shot comprehensive shot is located in the top wall or in the lower wall.
  • the axis of these two Locking elements or their cooperating coupling elements cut the Center axis of the displacement device at right angles.
  • the two locking elements in the two opposite Sidewall areas arranged. But it is also conceivable an arrangement in which the two locking elements are arranged in the top and bottom wall.
  • Figure 1 shows in cross section and Figure 2 in a view the right half of a part Telescopic boom in the area of the rear storage. Shown here are only two Telescope shots 1, 2 to illustrate the principle. Applicable is the novel Coupling and locking system also for telescopic boom with more than two telescopic telescopic shots.
  • sliding elements 3, 4 preferably made of polyamide attached.
  • In one Frame 5 is in a side wall 5.1 and in the associated telescopic section. 2 a locking element 6 is arranged.
  • a locking pin 24 of the Locking element 6 is displaceable with an axially Coupling part 15 of a coupling element 7 can be coupled. The details are explained in the following figures.
  • the coupling element 7 is at a displaceable element 8 of a displacement device, not shown attached.
  • the Longitudinal movement of the displaceable element 8 of the displacement device is in Figure 2 identified by a double arrow 10. This means the top going arrow the direction for the telescope and the down arrow the direction for the telescoping.
  • the mechanical connection of the hydraulic Piston-cylinder unit 9 with the coupling part 15 takes place via a lever 11, which with its upper end to the hydraulic piston-cylinder unit 9 and with his lower end is hinged to a fixed rod 12 and a bolt 13 with the coupling part 15 is connected.
  • the state shown in Figures 1 and 2 shows the Locking position between the telescopic section 2 with him comprehensive Telescopic shot 1 and the possibility by means of the displaceable element 8 of Displacement device the associated coupling element 7 according to the Double Arrow 10 to position.
  • Figures 3 - 6 show views of both the coupling element 7 and the Locking element 6.
  • the coupling element 7 has a sleeve 14, which is firmly connected to the displaceable element 8 of the displacement device.
  • a coupling part 15 is arranged, which by means of the bolt 13 and the Lever 11 is axially movable.
  • the lever 11 For the movement of the lever 11 are in the sleeve 14th axially extending recesses 16, 17 milled (see Fig. 1).
  • the coupling part 15 has a crescent-shaped recess 18. Furthermore, the coupling part 15 has a transverse recess 19, which makes it possible to connect the coupling part 15 with the locking pin 24 in a form-fitting manner. The manner in which this is done is explained in more detail in FIGS. 7-9.
  • the locking element 6 is corresponding to the illustrations in Figure 2 and Figure 5 and 6 composed of the following elements.
  • a sleeve 20 is attached, which is the has the same outer and inner diameter as the sleeve 14 for the Coupling element 7.
  • a sliding bush 21 for Facilitation of the axial sliding of the locking bolt 24.
  • a transverse web 29 is arranged, for example, via welding in the sleeve 20 is attached.
  • This crosspiece 29 forms with the sleeve 20 two each other opposite crescent-shaped openings, through which the also sickle-shaped formed webs 22, 23 of the locking bolt 24 are movable ( Figure 5).
  • a central recess 30 of the locking bolt 24 is a spring 25th arranged on the one hand on the front side of the recess of the Locking bolt 24 and on the other hand supported on the transverse web 29.
  • a screw 26 By the Locking pin 24 and through the transverse web 29 extends in the axial center position a screw 26, on the end of the thread a mushroom-shaped Coupling piece 27 is screwed.
  • the sliding bush is secured axially by a Ring with several circumferentially arranged fastening screws 28 (Fig.2).
  • FIGS 7a, b to 9a - c are the essential phases for unlocking with the proposed device shown.
  • FIGs 7a, 8a and 9a another unspecified Telescopic shot shown. This includes the two marked 1 and 2 Telescoping sections.
  • FIG. 7b shows the longitudinal section of FIG. 7a. Comparable as in Figures 1 and 2, Figures 7a, 7b show a state in which the Telescopic section 2 is locked with the telescopic section 1 comprising it.
  • FIGS. 8a-8c show a further phase of the unlocking process.
  • the coupling element 7.1 has been moved so far until the coupling part 15.1 by means of the piston-cylinder unit 9 and the lever 11.1 can be moved to the left. This shift is required for the transverse recess 19.1 in the coupling part 15.1 in height of the coupling piece 27.1 of the locking element 6.1 is located.
  • By moving the coupling element 7.1 towards Austeleskopieren comes the coupling piece 27.1 in a form-fitting manner Engagement with the recess 19.1 (part 8c).
  • Austeleskopieren comes from the lying end face of the recess 19.1 supporting portion of the coupling part 15.1 on the inside of the web 23.1 of Locking bolt 24.1 to the plant.
  • displaceable element 8 of the displacement device forth force on the Locking element 6.1 are exercised. This allows the head area of the Locking bolt 24.1 from the edge region of the ring-like insert 32.1 move away, as part 8c shows. Only in this position can the Locking bolt 24.1 are pulled.
  • FIGS. 9a-9c show the last phase of the unlocking process.
  • the hydraulic piston-cylinder unit 9 activated and against the force of the spring 25.1 the coupling part 15.1 moved by the lever 11.1 to the right. Due to the positive connection simultaneously moves the locking pin 24.1 from the recess 31.1 of bordering telescopic shot 1 out and thus are the two telescopic shots 1, 2 unlocked, wherein in the right half of the part, not shown here Locking bolt 24 in the same manner by means of the coupling part 15th has been drawn.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jib Cranes (AREA)

Claims (17)

  1. Grue avec une flèche télescopique, dont les tronçons télescopiques peuvent être sortis et rentrés par l'accouplement à un dispositif de déplacement après le détachement de boulonnages d'arrêt et peuvent être verrouillés dans la position sortie ou rentrée, une unité d'accouplement et de verrouillage, laquelle peut être accouplée aux tronçons télescopiques par l'intermédiaire d'un élément d'accouplement, étant prévue sur l'élément mobile du dispositif de déplacement et au moins un élément de verrouillage étant agencé sur chaque tronçon télescopique à son extrémité arrière sur la face intérieure, lequel peut être relié à l'unité d'accouplement et de verrouillage et peut être poussé dans et hors d'un logement du tronçon enveloppant le tronçon télescopique,
    caractérisée en ce qu'il est prévu, sur l'élément mobile (8) du dispositif de déplacement sortant et rentrant les tronçons télescopiques (1, 2), au moins un élément d'accouplement (7, 7.1) perpendiculaire à l'axe du dispositif de déplacement avec une partie d'accouplement (15, 15.1) mobile dans le sens radial, laquelle peut être accouplée par correspondance de forme à un boulon de verrouillage (24, 24.1) mobile dans le même axe d'un élément de verrouillage (6, 6.1), le boulon de verrouillage (24, 24.1) combiné à la partie d'accouplement (15, 15.1) représentant en position de déverrouillage l'accouplement entre le dispositif de déplacement (8) et le tronçon télescopique (2) à sortir et rentrer, une zone en saillie de la partie d'accouplement (15, 15.1) et du boulon de verrouillage (24, 24.1) venant en appui par correspondance de forme dans la phase de transition entre déverrouillage et verrouillage.
  2. Grue selon la revendication 1,
    caractérisée en ce que le dispositif de déplacement est un mouflage.
  3. Grue selon la revendication 1,
    caractérisée en ce que le dispositif de déplacement est une unité hydraulique à piston et cylindre.
  4. Grue selon les revendications 1 et 3,
    caractérisée en ce que la tige de piston est l'élément fixe de l'unité à piston et cylindre et l'élément d'accouplement (7, 7.1) est agencé dans la zone d'extrémité du cylindre, d'où sort la tige de piston.
  5. Grue selon les revendications 1 et 3,
    caractérisée en ce que le cylindre est l'élément fixe de l'unité à piston et cylindre et un longeron transversal est fixé à l'extrémité avant de la tige de piston, sur lequel est agencé au moins un élément de guidage situé parallèlement à distance de l'enveloppe de cylindre, dont la zone d'extrémité arrière est reliée à l'élément d'accouplement (7, 7.1).
  6. Grue selon les revendications 1 à 5,
    caractérisée en ce que le boulon de verrouillage (24, 24.1) est commandé par ressort (25, 25.1) et présente une pièce d'accouplement (27, 27.1) à son extrémité intérieure.
  7. Grue selon l'une des revendications 1 à 6,
    caractérisée en ce que l'élément d'accouplement (7, 7.1) présente un manchon (14, 14.1) qui est fixé à l'élément mobile (8) du dispositif de déplacement et dans lequel est agencée de façon mobile une partie d'accouplement (15, 15.1), laquelle est reliée d'un côté à un élément d'actionnement agencé sur le dispositif de déplacement et présente, dans la zone orientée vers l'élément de verrouillage (6, 6.1), un évidement (19, 19.1) pour recevoir la pièce d'accouplement (27, 27.1) et un autre évidement (18, 18.1) pour recevoir une zone partielle (23, 23.1) du boulon de verrouillage (24, 24.1).
  8. Grue selon l'une des revendications 1 à 7,
    caractérisée en ce que l'élément de verrouillage (6, 6.1) présente, dans un évidement des tronçons télescopiques (2) à télescoper, un manchon (20, 20.1) ajusté, dans lequel le boulon de verrouillage (24, 24.1) est agencé de façon mobile, lequel est muni de la pièce d'accouplement (27, 27.1) sur le côté orienté vers l'élément d'accouplement (7, 7.1).
  9. Grue selon les revendications 6 à 8,
    caractérisée en ce que la pièce d'accouplement (27, 27.1) présente un axe et un élément d'extrémité en forme de champignon fixé sur celui-ci, lequel peut être poussé dans et hors d'un évidement en forme de T (19, 19.1) de la partie d'accouplement (15, 15.1).
  10. Grue selon les revendications 8 et 9,
    caractérisée en ce que, dans le manchon (20, 20.1), une douille de glissement (21, 21.1) est ajustée et, dans la zone de fond de la douille de glissement (21, 21.1), est agencée une traverse (29, 29.1) reliée au manchon (20, 20.1), laquelle forme avec le manchon (20, 20.1 ) des ouvertures en forme de croissant par lesquelles des prolongements en forme de traverses (22, 22.1, 23, 23.1) du boulon de verrouillage (24, 24.1) peuvent traverser, un prolongement en forme de traverse (23, 23.1) pouvant être poussé dans et hors de l'évidement correspondant (18, 18.1) de la partie d'accouplement (15, 15.1).
  11. Grue selon la revendication 10,
    caractérisée en ce que le boulon de verrouillage (24, 24.1) présente un évidement central (30, 30.1) dans lequel il est possible d'agencer un ressort (25, 25.1) qui repose avec l'autre extrémité sur la traverse (29, 29.1).
  12. Grue selon la revendication 11,
    caractérisée en ce que, dans l'axe médian du boulon de verrouillage (24, 24.1), une vis (26, 26.1) traversant le boulon de verrouillage (24, 24.1) et la traverse (29, 29.1) est agencée, sur l'extrémité filetée de laquelle la pièce d'accouplement (27, 27.1) peut être vissée.
  13. Grue selon l'une des revendications 1 à 12,
    caractérisée en ce que la partie d'accouplement (15, 15.1) peut être actionnée par un moyen agencé dans la zone d'extrémité de l'élément mobile (8) du dispositif de déplacement.
  14. Grue selon la revendication 13,
    caractérisée en ce que le moyen est une unité hydraulique à piston et cylindre (9) qui est agencée transversalement à l'axe longitudinal du dispositif de déplacement.
  15. Grue selon l'une des revendications 1 à 14,
    caractérisée en ce qu'un seul élément de verrouillage (6) est agencé en haut de manière centrale ou en bas de manière centrale dans chaque tronçon télescopique (1, 2) à sortir et le logement correspondant (31) du tronçon télescopique enveloppant se trouve dans la paroi supérieure ou dans la paroi inférieure.
  16. Grue selon l'une des revendications 1 à 14,
    caractérisée en ce que deux éléments d'accouplement (7, 7.1) situés l'un en face de l'autre sont fixés dans la zone d'extrémité de l'élément mobile (8) du dispositif de déplacement, dont les axes coupent l'axe médian du dispositif de déplacement à angle droit, et les deux éléments de verrouillage (6, 6.1) également situés l'un en face de l'autre peuvent être accouplés au moyen de la partie d'accouplement (15, 15.1) et du boulon de verrouillage (24, 24.1).
  17. Grue selon la revendication 16,
    caractérisée en ce que les deux éléments de verrouillage (6, 6.1) sont agencés dans les deux zones de paroi latérale situées l'une en face de l'autre du tronçon télescopique (2) à sortir et le logement correspondant (31, 31') du tronçon télescopique (1) enveloppant se trouve également dans la zone de paroi latérale.
EP00250048A 1999-04-29 2000-02-16 Grue avec une flèche télescopique Expired - Lifetime EP1055635B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19920634 1999-04-29
DE19920634 1999-04-29
DE10007773A DE10007773B4 (de) 1999-04-29 2000-02-14 Kran mit einem Teleskopausleger
DE10007773 2000-02-14

Publications (3)

Publication Number Publication Date
EP1055635A2 EP1055635A2 (fr) 2000-11-29
EP1055635A3 EP1055635A3 (fr) 2003-09-17
EP1055635B1 true EP1055635B1 (fr) 2005-01-12

Family

ID=26004434

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00250048A Expired - Lifetime EP1055635B1 (fr) 1999-04-29 2000-02-16 Grue avec une flèche télescopique

Country Status (2)

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EP (1) EP1055635B1 (fr)
AT (1) ATE286849T1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202006019308U1 (de) * 2006-12-21 2008-04-30 Liebherr-Werk Ehingen Gmbh Teleskopschuß
DE202007002203U1 (de) 2007-02-14 2008-06-26 Liebherr-Werk Ehingen Gmbh Teleskopschuß
CN105712219B (zh) * 2016-05-06 2017-12-08 北汽福田汽车股份有限公司 一种起重机及其伸缩臂架
WO2019178067A1 (fr) * 2018-03-12 2019-09-19 Manitowoc Crane Companies, Llc Flèche de grue télescopique à broches
CN113415742B (zh) * 2021-08-02 2023-06-23 王凯 起重机伸缩臂滑块组件

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3510710A1 (de) * 1985-03-23 1986-10-02 Fried. Krupp Gmbh, 4300 Essen Teleskopkran
DE3908571A1 (de) * 1989-03-16 1990-09-20 Century Ii Gmbh Mobilkrane Vorrichtung zum wenigstens zeitweisen koppeln der beiden letzten ineinander gefuehrten teleskopischen auslegerschuesse eines kranauslegers
DE4344795A1 (de) * 1993-12-28 1995-06-29 Liebherr Werk Ehingen Fahrbarer Kran mit einem Teleskopausleger
DE19641191A1 (de) * 1996-09-24 1998-03-26 Mannesmann Ag Teleskopausleger, insbesondere für stationäre und fahrbare Krane
DE19824672A1 (de) * 1997-05-28 1998-12-03 Mannesmann Ag Kran mit einem Teleskopausleger

Also Published As

Publication number Publication date
ATE286849T1 (de) 2005-01-15
EP1055635A2 (fr) 2000-11-29
EP1055635A3 (fr) 2003-09-17

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