EP1153875B1 - Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latérale d'une flèche - Google Patents

Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latérale d'une flèche Download PDF

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Publication number
EP1153875B1
EP1153875B1 EP01110133A EP01110133A EP1153875B1 EP 1153875 B1 EP1153875 B1 EP 1153875B1 EP 01110133 A EP01110133 A EP 01110133A EP 01110133 A EP01110133 A EP 01110133A EP 1153875 B1 EP1153875 B1 EP 1153875B1
Authority
EP
European Patent Office
Prior art keywords
locking bolt
locking
cam
axis
rotary actuator
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
EP01110133A
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German (de)
English (en)
Other versions
EP1153875A1 (fr
Inventor
Frank Richter
Dieter Stührwoldt
Jens Ennen
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.)
Grove US LLC
Original Assignee
Grove US LLC
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
Application filed by Grove US LLC filed Critical Grove US LLC
Priority to EP04019505A priority Critical patent/EP1484275B8/fr
Publication of EP1153875A1 publication Critical patent/EP1153875A1/fr
Application granted granted Critical
Publication of EP1153875B1 publication Critical patent/EP1153875B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/64—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
    • 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 lock for telescopic shots according to the preamble of patent claim 1.
  • Telescopic shots of crane jibs can be locked in the extended state, among other things, to relieve the telescoping system. This is especially true when driver devices, such as piston / cylinder units are used to extend the telescopic shots, which extend and retract one telescopic shot after the other. In order to lock telescopic shots, usually locking bolts are used, which engage from a telescopic shot in a recording of an adjacent telescopic section.
  • a lock is known in which two locking bolts of a locking unit are arranged on the inner telescopic section so that they can be brought into engagement with two mutually opposite receptacles in the vertical side bars of the adjacent outer telescopic section.
  • the lock has a hydraulic cylinder which is arranged parallel to the longitudinal axis of the telescopic sections and a lever which converts the direction of movement of the actuating cylinder in the movement of the locking bolt.
  • the engagement end of the lever engages, when the device is controlled by position monitoring respectively moved to the appropriate location, in the inner Umgriff of the locking cylinder, so that by pressing the hydraulic cylinder, the locked position can be solved.
  • a lock for telescopic shots comprises a linearly displaceable locking bolt for connecting and disconnecting an inner telescopic section and an outer telescopic section, wherein the locking bolt is moved by means of a rotary actuator from its extended position to its retracted position and is kept biased in its extended position.
  • the advantage of the arrangement according to the invention is in particular that it can be built with very small overall dimensions.
  • the locking system can be applied to much smaller telescopic shots of crane jibs than before. Both the height and the width of the required space are significantly reduced by the use of a rotary actuator.
  • the locking bolt is preferably mounted in the inner telescopic section and protrudes in its extended position in the adjacent thereto outer telescopic section, so that the telescopic sections relative to each other in the axial direction can not be moved. In its retracted position, the locking bolt is disengaged from the outer telescoping section, allowing displacement of the telescoping sections relative to each other. It can be used in comparison to a hydraulic cylinder, a small rotary drive. This rotary drive can optionally hydraulic, electric or pneumatically operated. Such a rotary drive has a smaller footprint than a hydraulic cylinder, which acts by means of a lever system on the locking bolt.
  • Two locking bolts are particularly preferably arranged on the inner telescopic section so that they can be brought into engagement with two opposing receptacles in the vertical side webs of the outer telescopic section, preferably in the middle region of the side webs.
  • a temporary connection between the locking bolt and rotary drive is provided when the inner telescopic section is to be moved.
  • the rotary actuator can act directly on the locking bolt.
  • the locking bolt is connected via a connecting element with the rotary actuator connected or at least temporarily connectable.
  • the connecting element has a cam guide, in particular a cam claw, or is formed by a cam guide, in particular a cam claw. This is particularly advantageous if the connecting element is not to be permanently connected to the locking bolt.
  • Cam guide is driven by the rotary actuator and acts on the locking pin, which is linearly displaced according to the guide curve of the cam guide.
  • a cam claw is provided which includes a guide surface and can be easily brought out of engagement with the lock pin. Particularly preferred as curve guide a cam is used.
  • the locking bolt an engaging member, for. B. in the form of a pen or a roll provided.
  • a surface is formed, which approaches an axis of the rotary actuator.
  • This guide curve or guide surface can be a flat or round surface, particularly preferably the guide surface runs helically toward the axis.
  • the axis of the rotary actuator is substantially perpendicular to the axis of displacement of the locking bolt.
  • the cam guide can preferably be brought out of engagement with the locking bolt. This is particularly advantageous if the same rotary actuator and cam guide to be used for different locking bolts of different telescopic shots. Particularly preferably, the cam guide can only be disengaged from the locking bolt when the locking bolt is in its extended position. This increases the reliability of a lock, since the inner telescopic section is never in a "free" state in which the inner telescopic section is connected neither to the outer telescopic section nor to the curve guide. Preferably, the cam guide may then be engaged with the lock pin when the lock pin is in its "safe" extended position.
  • the cam guide can be brought into a passive position in which the cam guide is out of engagement with the locking pin and can be moved relative to the locking pin, without coming into engagement with the locking pin.
  • the cam guide is secured in its passive position against rotation in order to increase safety. It thus does not come to an unwanted operation of a locking bolt.
  • a piston / cylinder unit is preferably used, wherein the head of the cylinder is connectable to the inner telescopic section and displaces this relative to the outer telescopic section upon actuation of the cylinder.
  • the locking of the two telescopic sections is previously released by the locking bolt is moved to its retracted position.
  • a release device is provided, which with the piston / cylinder unit preferably at the piston outlet side head of the cylinder, is connected and can be moved along the axis of the telescopic shots.
  • the release device comprises the rotary actuator and the connecting element and is engageable with the inner end of the locking bolt to move the locking bolt against its bias from its extended position to its retracted position.
  • the engaging member of the locking bolt can be securely brought into engagement with the guide surface
  • the locking bolt is preferably mounted rotationally displaceable linearly.
  • An angular or oval locking bolt can be used.
  • a cylindrical locking bolt is prevented from twisting by a groove or pin.
  • the cam guide is preferably held in its passive position by an elastic force, in particular by a spring force.
  • the cam guide can be fixed in the passive position by a securing element, in particular a securing pin.
  • the fuse element can be used in addition to the spring action.
  • the locking pin is received or stored in a receptacle, particularly preferably in a socket, in which an emergency operation for a displacement of the locking bolt from its extended position to its retracted position is provided.
  • An emergency operation for releasing the locking bolt without the release device is thus integrated into the receptacle of the locking bolt, whereby a large space savings is achieved.
  • the emergency operation comprises an actuating element, in particular a pin, which can be held in the sleeve in the axial direction of the sleeve in different axial positions and entrains the locking bolt in a change in the axial position.
  • the actuator can be clamped in different axial positions.
  • the actuating element is connected via a thread to the sleeve and can thus be positioned at a rotation relative to the bushing in different axial positions.
  • the actuating element is connected to the cam guide side facing the sleeve via a thread. If the actuator is fixed to the locking bolt and rotated about its longitudinal axis, a relative movement between the locking pin and socket is generated.
  • the emergency operation is carried out so that it can also be used as so-called anti-rotation against rotation of the locking bolt.
  • the actuator can be used as an emergency, as anti-rotation or both.
  • the proximity sensors which detect the relative position of the telescopic shots, integrated directly into the cylinder head.
  • the cylinder head is designed so that the proximity sensors are housed in cavities or holes in the cylinder head and electrical connections via cable guides, which are mounted on the front side of the cylinder head, can be led to the outside. There is a small footprint for the proximity sensors, which are housed protected at the same time.
  • FIG. 1 shows a three-dimensional section of an inner telescopic section 18. It is mounted on the inside in an outer telescopic section (not shown).
  • locking bolt 14 are provided, which protrude through both the inner and by the outer telescopic section.
  • the locking bolt 14 is mounted on a guide bush 13 in the inner telescopic section 18.
  • the guide bush 13 is connected to the inner telescopic section 18, preferably via a press fit.
  • the locking pin 14 can be moved in the guide bush 13 linearly between an extended and a retracted position transversely to the direction of displacement of the telescopic sections.
  • a second unillustrated locking bolt is disposed opposite the locking bolt 14.
  • the outer telescopic section recordings are preferably provided in the vertical side bars, in which the locking pins are respectively engageable and thus connect the inner with the outer telescopic section when the locking pins 14 are in their extended position. The two telescopic shots are thus locked against each other.
  • only one locking bolt is considered by way of example.
  • the locking pin 14 is held by means of a compression spring 28 in its extended position.
  • the compression spring 28 is shown in FIG.
  • the locking bolt 14 can be moved against the spring force in its retracted position. In this position, the locking pin 14 is no longer in engagement with the outer telescopic section, so that the locking of the telescopic sections is released.
  • the release device is provided on a head 2 of a piston / cylinder unit 1, 3.
  • a piston rod 1 can be pushed into a cylinder tube 3.
  • the release device comprises a rotary actuator 7 and a cam 10.
  • the locking bolt 14 is pulled by means of the cam, which is rotated by the rotary actuator 7 in rotation, in the interior of the telescopic shots.
  • the locking pin 14 gets out of engagement with the outer telescopic section.
  • the lock for telescopic shots according to Figure 1 is shown in a three-dimensional view without the telescopic shots in Figure 2.
  • Integrated, or attached to the head 2 of the cylinder 3 is the rotary actuator 7, an interlock unit 12, a cylinder lock 5 and proximity sensors 6.
  • the proximity sensors 6 detect the relative position of the head 2 to the telescopic shots.
  • the cylinder lock 5 By means of the cylinder lock 5, the head 2 can be firmly connected to a telescopic weft.
  • the cylinder lock 5 can be moved transversely to the axis of the cylinder 1, 3 into a corresponding receptacle of the respective telescopic section. In this way, a telescopic section can be moved by means of the piston / cylinder unit 1, 3 relative to the other telescopic shots.
  • the cylinder head 2 slides in guide rails. 4
  • the cylinder head 2 protrudes transversely to the longitudinal axis of the piston / cylinder unit 1, 3 from the rotary actuator 7.
  • it is a rotary drive with an axis 9.
  • the cam 10 can be rotated.
  • the cam 10 can be fixed in a position by a locking pin 8.
  • the locking pin 8 is moved parallel to the axis of rotation 9 of the rotary actuator 7 of the rotary actuator 7 in a corresponding receptacle in the cam 10 ( Figure 3).
  • the locking pin 8 is retracted into the rotary actuator 7 and releases the cam 10 for rotation.
  • the interlock unit 12 controls and / or actuates the sliding movements of the locking pin 8 and the cylinder lock 5.
  • the cam 10 can be brought into engagement with the locking pin 14.
  • the cylinder head 2 is correspondingly positioned relative to the locking bolt with the aid of the proximity sensors 6.
  • the locking pin 14 is forked at its end, which points into the interior of the telescopic sections, wherein the two forked ends are penetrated by an engaging member 15 transversely to the direction of displacement of the locking bolt 14.
  • the engagement member 15 is connected as a driving pin 15 fixed to the locking bolt 14.
  • the cam 10 engages with a rotation about the axis 9 in the space between the driving pin 15 and the locking pin 14 and pulls the locking pin 14 on the axis 9 of the rotary actuator 7 to.
  • a rotation lock 16 is connected to the bush 13 and the locking bolt 14 and ensures that the engaging member 15 is always in a suitable radial position for engagement of the cam 10.
  • the rotation lock 16 is designed as a rod 16 which is connected via a thread 29 with the guide bush 13 on the cam plate 10 facing the end face of the guide bushing 13.
  • a screw 16 is used which passes through an axial through hole 30 of the locking bolt 14.
  • the screw 14 is pushed through the through hole 30 of the locking bolt and then screwed into the thread 29 of the guide bushing 13.
  • the compression spring 28 presses the locking bolt 14 toward a screw head 31.
  • the threaded rod or screw 16 is set in rotation, so that it moves towards the axis 9, the threaded rod 16 takes the locking bolt 14 with it. It is implemented an emergency operation, which is integrated into the sleeve 13 and allows actuation of the locking bolt 14 without the rotary actuator 7 and the cam 10.
  • the locking pin 14 is mounted in a bore 32 of the sleeve 13 and on the rod 16 via the through hole 30. A rotation about the longitudinal axis of the locking bolt 14 is thus not possible.
  • Particularly preferred two anti-rotation locks 16 are provided to prevent tilting of the locking bolt 14 at an axial displacement.
  • the rotary actuator 7 has a preferably quadrilateral axis 9, on which the cam 10 is placed with a corresponding recess 25 (see Figure 4) for the axis 9.
  • the locking pin 8 can fix the cam 10 in a certain position by an axial displacement in a corresponding recess 26 (see FIG.
  • cable guides 17 can be seen, which are designed as holes. It is provided for a compact design of the cylinder head 2, so that they are used in telescopic shots with a small inner diameter of the telescopic shots can. This also ensures better protection against mechanical damage.
  • FIG 4 shows the cam 10 in its passive position (see Figure 1 and Figure 2).
  • the cam 10 includes 2 curve jaws 24 to simultaneously actuate both locking pin 14. In all figures, only one locking pin 14 is shown in each case.
  • a cam claw 24 comprises a radially outer surface 27 and a radially inner surface 21.
  • the radially inner surface 21 is formed in the embodiment as a spiral surface 21, wherein the center of the spiral surface 21 is located in the axis of rotation 9 of the cam 10. If the cam 10 is in its passive position, it can be displaced along the axis of the telescopic shots without engaging the locking pin 14.
  • the cam 10 is in a 0 degree position in which it is made longer in the direction of the longitudinal axis of the telescopic shots than wide.
  • the cylinder head 2 In the passive position of the cam 10, the cylinder head 2, together with the release device, can be moved into the telescopic section to be moved. In this passive position, the cam is secured by the locking pin 8.
  • the release device has reached a suitable position for releasing the locking bolt 14 when the axes of the longitudinal displacement of the locking bolt 14 and the axis of rotation 9 of the rotary actuator 7 intersect.
  • the cam 10 is rotated 45 degrees clockwise and reaches an active position at the start of engagement of the engaging member 15 in the cam 10 and the cam claw 24 in the driving pin 15 of FIG 5.
  • the locking pin 14 is located in his extended position. If the cam, preferably further rotated by another 90 degrees, an end position of the cam 10 is achieved according to Figure 6. During the transition of the driving pin 15 slides on the spiral surface 21, so that the driving pin 15 is pulled together with the locking pin 14 against the biasing force of the locking bolt 14 on the axis of rotation 9 of the cam 10 out.
  • the locking pin 14 is located in Figure 6 in its retracted position. Against a further rotation of the cam 10, the driving pin 15, preferably in a 135 degree position of the cam 10 abuts against an end stop 22 of the cam claw 24th
  • the reverse process takes place, wherein the locking pin 14 is pushed back into its extended position due to the spring force. If the locking bolt is not in direct overlap with the receptacle in the outer telescopic section, the locking bolt 14 at least does not move completely into its extended position. A lock between the inner and the outer telescopic shot does not materialize. In this case, it makes sense that the cam 10 does not reach its passive position, thus the locking pin 8 can not be pushed out and the cylinder lock 5 is not disengaged from the inner telescopic section 18. The inner telescopic section 18 is thus not completely free.
  • the cam 10 is moved back into the passive position.
  • the raceway of the cam 10, or cam claw 10 in conjunction with the passive stop 23 it is ensured that the passive position can be achieved only when the locking pin 14 has reached its extended position and thus in engagement with the outer Telescopic shot was brought. Only when the passive position of the cam 10 has been reached, the locking pin 8 can be brought back into engagement with the cam 10 and unintentional rotation of the cam 10 can be prevented. Subsequently, the interlock unit 12, the cylinder lock released and thus solve the connection between the piston / cylinder unit and the inner telescopic section 18. All movements are preferably monitored by sensors and controlled by an external controller.

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

Claims (5)

  1. Dispositif de verrouillage pour éléments télescopiques, en particulier pour la flèche d'une grue mobile, comportant un boulon de verrouillage (14) coulissant linéairement pour relier et libérer un élément télescopique intérieur (18) et un élément télescopique extérieur, le boulon de verrouillage (14) étant maintenu précontraint dans sa position sortie et le boulon de verrouillage (14) étant déplacé, au moyen d'un actionnement tournant (7), de sa position sortie dans sa position rentrée, le boulon de verrouillage (14) étant relié ou pouvant être relié par un élément de liaison (10) à l'actionnement tournant (7), caractérisé en ce que l'élément de liaison (10) comporte un guide à cames (10), en particulier une griffe à cames, ou est formé par un guide à cames (10), en particulier une griffe à cames.
  2. Dispositif de verrouillage selon la revendication précédente, caractérisé en ce qu'un organe d'attaque (15) du boulon de verrouillage (14) se déplace, en particulier glisse, sur une surface (21) du guide à cames (10), qui s'approche d'un axe (9) de l'actionnement tournant (7), en particulier parvient sur l'axe (9) en spirale, lorsque la surface (21) est tournée autour de l'axe (9), le boulon de verrouillage (14) s'approchant de l'axe (9).
  3. Dispositif de verrouillage selon l'une des deux revendications précédentes, caractérisé en ce que le guide à cames (10) peut être désengagé du boulon de verrouillage (14), lorsque le boulon de verrouillage (14) se trouve dans sa position sortie.
  4. Dispositif de verrouillage selon l'une des revendications 1 à 3, caractérisé en ce que le guide à cames (10) peut être bloqué contre une rotation dans une position passive dans laquelle le guide à cames (10) est désengagé du boulon de verrouillage (14).
  5. Dispositif de verrouillage selon l'une des revendications 1 à 4, caractérisé en ce qu'il est prévu un dispositif de libération qui
    a) est relié à une unité à cylindre et piston (1, 3), en particulier sur la tête (2) du cylindre (3) côté sortie du piston, et peut être déplacé le long de l'axe des éléments télescopiques (19, 20),
    b) peut être amené en prise avec l'extrémité intérieure du boulon de verrouillage (14), afin de déplacer le boulon de verrouillage (14) à l'encontre de la précontrainte, depuis sa position sortie dans sa position rentrée, et qui
    c) comprend l'actionnement tournant (7) et l'élément de liaison (10).
EP01110133A 2000-05-08 2001-05-04 Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latérale d'une flèche Expired - Lifetime EP1153875B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP04019505A EP1484275B8 (fr) 2000-05-08 2001-05-04 Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latéral d'une flèche

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10022373 2000-05-08
DE10022373A DE10022373B4 (de) 2000-05-08 2000-05-08 Verriegelungs- und Betätigungseinheit für seitliche Auslegerverriegelung

Related Child Applications (1)

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EP04019505A Division EP1484275B8 (fr) 2000-05-08 2001-05-04 Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latéral d'une flèche

Publications (2)

Publication Number Publication Date
EP1153875A1 EP1153875A1 (fr) 2001-11-14
EP1153875B1 true EP1153875B1 (fr) 2006-06-07

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EP01110133A Expired - Lifetime EP1153875B1 (fr) 2000-05-08 2001-05-04 Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latérale d'une flèche
EP04019505A Expired - Lifetime EP1484275B8 (fr) 2000-05-08 2001-05-04 Unité de verrouillage et d'actionnement pour un dispositif de verrouillage latéral d'une flèche

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Country Status (6)

Country Link
US (1) US6520359B2 (fr)
EP (2) EP1153875B1 (fr)
JP (1) JP3869679B2 (fr)
CA (1) CA2346484C (fr)
DE (3) DE10022373B4 (fr)
ES (2) ES2263529T3 (fr)

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EP2835336A1 (fr) 2013-08-09 2015-02-11 Manitowoc Crane Group France SAS Tête de verrouillage mécanique

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WO2015176218A1 (fr) * 2014-05-20 2015-11-26 徐州重型机械有限公司 Dispositif d'allongement de boulon monocylindrique et grue
US10647552B1 (en) * 2015-09-25 2020-05-12 Link-Belt Cranes, L.P., Lllp Fly connection system for a crane boom
EP3448795B1 (fr) * 2016-04-25 2023-07-26 Manitowoc Crane Companies, LLC Grue dotée d'un mécanisme de verrouillage rotatif
JP6665874B2 (ja) * 2018-02-16 2020-03-13 株式会社タダノ クレーン
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2835336A1 (fr) 2013-08-09 2015-02-11 Manitowoc Crane Group France SAS Tête de verrouillage mécanique

Also Published As

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EP1484275B1 (fr) 2005-10-12
JP2002003174A (ja) 2002-01-09
ES2263529T3 (es) 2006-12-16
DE10022373B4 (de) 2005-11-24
EP1153875A1 (fr) 2001-11-14
DE50110000D1 (de) 2006-07-20
ES2250947T3 (es) 2006-04-16
CA2346484A1 (fr) 2001-11-08
EP1484275B8 (fr) 2006-01-18
US6520359B2 (en) 2003-02-18
CA2346484C (fr) 2006-10-24
DE10022373A1 (de) 2001-11-29
EP1484275A2 (fr) 2004-12-08
US20010052506A1 (en) 2001-12-20
EP1484275A3 (fr) 2004-12-15
JP3869679B2 (ja) 2007-01-17
DE50107717D1 (de) 2005-11-17

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