EP1201594B1 - Telekopiersystem eines Kranauslegers - Google Patents

Telekopiersystem eines Kranauslegers Download PDF

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Publication number
EP1201594B1
EP1201594B1 EP00420221A EP00420221A EP1201594B1 EP 1201594 B1 EP1201594 B1 EP 1201594B1 EP 00420221 A EP00420221 A EP 00420221A EP 00420221 A EP00420221 A EP 00420221A EP 1201594 B1 EP1201594 B1 EP 1201594B1
Authority
EP
European Patent Office
Prior art keywords
actuator
block
boom
locking
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
Application number
EP00420221A
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English (en)
French (fr)
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EP1201594A1 (de
Inventor
Robert Baraniak
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.)
PPM SA
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PPM SA
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Filing date
Publication date
Priority to FR9911102A priority Critical patent/FR2797862B1/fr
Application filed by PPM SA filed Critical PPM SA
Priority to EP00420221A priority patent/EP1201594B1/de
Priority to DE60023506T priority patent/DE60023506T2/de
Priority to US09/709,736 priority patent/US6474486B1/en
Publication of EP1201594A1 publication Critical patent/EP1201594A1/de
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Publication of EP1201594B1 publication Critical patent/EP1201594B1/de
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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
    • B66C23/708—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic locking devices for telescopic jibs
    • 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 present invention relates to the technical field of arrows telehandlers of cranes, whether installed in a fixed position or carried by self-propelled mobile structures or not.
  • the telescopic arrows are the most generally mounted on an orientable turret in azimuth with respect to a support structure and on which turret is articulated in site, an arrow constituted by at least three distinct telescopic elements.
  • the first element is called basic and is usually linked to the axis of articulation in site
  • the second element is said intermediate
  • the third is said external and usually carries at least one arrow head pulley.
  • an arrow of the type above provided for the existence of technical means capable of making telescoping possible under load, so as to be able to provide range adjustment capability in line with a certain point in relation to which the load was to be mounted, lowered, posed or removed.
  • Such means are particularly expensive, must be designed so very robust and be very carefully maintained so that the essential function first can be assumed safely.
  • such means represent a large mass that strikes the functional abilities of the arrow.
  • This technique consists of appreciating a priori the scope to be conferred on the arrow so that it can, from its site of implantation, reach the point of support or removal, or even the locus of geometry, for example to circular part, that this point is likely to follow and then to adjust the arrow length.
  • a straight-moving actuator inside a telescopic boom alternative that is, for example, linked to the base element and made relatively mobile by compared to the extreme element.
  • such an actuator is constituted by a hydraulic cylinder of the double-acting type and predetermined single stroke which generally corresponds the longest reentry or exit run that any of the mobile elements, except of course the basic element considered as fixed.
  • the first is to be able to keep locked the elements telescopic between them in the retracted position or in the extended position.
  • the second is the need to be able to selectively support one any telescopic elements to ensure separation from the position he occupies and then the training to the new position sought by which a new lock must occur.
  • this technology involves series of locking and handling devices that overlap and must to be subjected to an energy supply based on pressurized fluid whose distribution must be perfectly synchronized to achieve the desired result that pass, for example, during a telescoping out, necessarily by the respect a sequence of support for the element concerned, then unlocking the this element before engaging its relative sliding to the new position where a lock must be re-established.
  • German application DE 43 44 795 in which between the actuator and each of the telescopic elements, means are provided for support in the same order as the previous request and means of locking which consist of the engagement of pins to be ordered separately in erasure or retraction stroke to release an element with respect to another.
  • Such technology which may appear to be less technically that of the previous application, however, involves always implementing two types of control devices capable of selectively providing the link function between the actuator and any of the elements to be moved and the uncoupling said element to move relative to the next.
  • the object of the invention is to propose a new telescoping technique and new means of implementation, so that it can be carried out in all Safety the above functions from equipment reduced in weight.
  • An object of the invention is to be able to transfer, for the benefit of the realization of the arrow, the gain of weight thus obtained in order to reinforce the effectiveness of the latter without altogether overall mass can be considered changed to the point of reducing the functional.
  • the object of the invention is to propose a new technique and new means of implementation which make it possible to achieve, from the combination of two technical means cooperating with each other, the two functions which, are the support or the temporary coupling between the actuator and the telescopic elements to be moved and, on the other hand, the unlocking of the latter relative to the surrounding element to allow relative movement and, conversely, the opposite functions when it is appropriate to immobilize in the new desired position any of the elements moved in order to then allow his uncoupling from the actuator.
  • the subject of the invention is also an arrow making use of the means precedents.
  • Fig. 1 shows an example of application of the object of the invention to a crane of the mobile and self-propelled type. Such an example is provided for illustrative purposes, because the object of the invention could be implemented just as well on a crane installed at a fixed position, or even on a similar installation.
  • the crane according to fig. 1 comprises a platform or a chassis 1 carried by rolling members 2 constituted, for example in a known manner, by several motor-gear trains.
  • the platform or chassis 1 comprises a driving cabin 3 housing one or more engines and / or thrusters.
  • Side stabilizers 4 are provided on the chassis 1, substantially in front of the front and rear portions, to provide a stable attitude when commissioning the crane.
  • the platform 1 also comprises a turret 5 which is orientable in azimuth on a vertical axis x-x ' .
  • This turret 5 carries, by a horizontal axis of articulation 6, an arrow 7 which is orientable in site by means of a jack 8 .
  • the arrow 7 is constituted by telescopic elements, for example four in number, the first 9, said base, is directly carried by the axis 6.
  • the elements 10 and 11 are called intermediate, while the element 12 is said to be extreme and carries at least one arrow head pulley 13 .
  • the arrow 7 is completed by at least one cable or the like 14 wound and / or unwound from a winch 15 and passing over the pulley 13 beyond which such a cable ensures the suspension of a load 16 .
  • the turret 5 is, moreover, equipped with a cabin 18 called boom which allows the operation of the actuating means of the latter such as the cylinder 8, the winch 15, and a telescoping means 19 included in the arrow 7 and shown in phantom in FIG.
  • a telescoping means such as 19 must be considered in absolute terms as falling within the known art, whereas the means according to the invention are provided to make possible, from such telescoping means 19, the re-entry and the individual output of each of the mobile telescopic elements, namely 10, 11, 12 and the immobilization of each of them in an extended position and in the retracted position.
  • the means according to the invention involve a device which is able to allow the implementation of the telescoping method according to the invention as described below with reference in particular to FIG. 2 .
  • Such a device comprises, first of all, the actuator 19 which is constituted so as to have, on the one hand, a fulcrum 20 in relation to the base element 9 and, on the other hand, a movable member 21 capable of being animated by a movement in rectilinear reciprocating stroke parallel to the axis YY 'of the arrow.
  • the actuator 19 is aligned on such an axis.
  • the actuator 19 is constituted by a hydraulic jack of the double-acting type, single-stage or single-stroke
  • the rod 22 is integral with the fulcrum 20
  • the body 23 is connected to the movable element 21 and is adapted to be worn, with possibility of relative guided displacement, by the end element 12.
  • Such a possibility can, for example, be provided by means of a foot 24 provided rollers or the like 25 capable of cooperating with a guideway not shown.
  • an actuator 19 of the above type can be considered, although its position is reversed, as not posing any hydraulic supply problem for the skilled person and this is the reason for which the pipes supply of the two chambers of such a jack are not illustrated in the drawings.
  • the movable member 21 is constituted by a telescoping head which is advantageously integrated with the bearing of the cylinder body 23 opposite the bottom of the latter.
  • the telescoping device comprises, moreover, a on the other hand, locking elements between the telescopic elements to immobilize them relatively in in and out positions and, on the other hand, means carried by the actuator to control these organs.
  • each locking block 30 carried by the inner end portion of each telescopic member 10, 11 , 12.
  • Each locking block 30 defines, as shown in Figs. 3 and 4, a well 31 opening from the upper face 32 of the block 30 and opening into a cage 33 containing a clamping member 34 with a tight rest position consisting of two jaws 35 which are always biased towards the one of the other by elastic members 36 ( Figure 5).
  • the jaws 35 are arranged vis-a-vis by facing active faces which are situated on either side of a longitudinal median plane PP 'passing through the axis Y-Y'.
  • Each block 30 also comprises a pusher 37 intended to cooperate with the jaws 35.
  • the pusher 37 comprises for this purpose a shank 37 1 guided in the well 31 and whose actuating face 37 2 is oriented towards the face 32.
  • the shank 37 1 is extended by a head 37 3 disposed in the cage 33 to cooperate by inclined faces 38 with ramps 39 that have the jaws 35 facing each other.
  • the pushers 37 provided with a shank 37 1 of length such that the face 37 2 of each is established in the plane or on the line L in the clamping position of the clamp 34 as is apparent from the following.
  • Each locking member further comprises at least one immobilization piece 40 with a fixed position which belongs to the telescopic element externally surrounding the one carrying the locking block 30 with which it must cooperate.
  • Such an immobilizing piece 40 is, for example, advantageously constituted by a profile segment intended to be imprisoned and clamped by the faces facing the jaws 35 .
  • the faces facing the jaws 35 are advantageously shaped in a manner conjugated to the flanks of the part 40 on which the jaws 35 are pressed by the springs 36.
  • the piece 40 is formed in the form of a double rack with asymmetric teeth 41 formed in opposition on the two longitudinal edges of the piece.
  • the asymmetrical teeth each have a face 42 substantially orthogonal to the longitudinal axis of the workpiece 40 and an inclined face 43
  • the workpiece 40 is carried by the telescopic element so that the faces 42 are oriented in the direction of the boom head. Because of this double rack form, the opposite faces of the jaws 35 are provided with complementary conformations 44 conjugated to the teeth 41 (FIG 7).
  • each block 30 has in its lower part a groove 45 ( Figure 4).
  • Each piece 40 is fixed to the corresponding telescopic element to determine, when cooperating with the corresponding block 30 of the telescopic element which is internal to it, a fixed position.
  • each element 9, 10 and 11 internally has two immobilization pieces 40 defining two cooperation positions for the corresponding immobilization block 30 of the immediately internal element, respectively 10 , 11 and 12. These two positions respectively correspond to the retracted position determined by the immobilizing part 40 1 and at an output position determined by the immobilizing part 40 2 .
  • each element 9, 10 or 11 may also comprise other immobilization parts such as 40 3 intended to determine each an intermediate position.
  • the immobilizing piece 40 may, in fact, be constituted by an uninterrupted profile 40 4 running over the entire useful length of each element 9, 10 or 11 or some of them, so as to define, as will be demonstrated later, the extreme positions of re-entry and exit, as well as n intermediate positions.
  • the section 40 4 meets the constructive arrangements described above for the piece 40 .
  • the device according to the invention also comprises means carried by the actuator 19 for controlling the organs described above.
  • Such means generally designated 50 ( Figures 2, 5 and 8), are qualified as mobile and are provided in connection with the telescoping head 21 carried by the cylinder body 23 in the illustrated example.
  • these means 50 comprise a member 51 able to occupy two relative positions under the action of a drive member 52. The first of these positions is the so-called erasure or retraction position and the second is said to support or coupling when the member 51 is able to cooperate with the locking block 30 of one of the mobile telescopic elements 10, 11 or 12.
  • the member 51 is also intended to act on the clamping member 34 of each block 30 so as to neutralize, by positive action, its clamping function to release the locking block 30 with respect to the workpiece immobilization 40 with which it cooperates.
  • the member 51 is designed to perform two functions that take place as described in the following.
  • the member 51 is constituted by a pin formed for example by the piston rod of a jack constituting the motor member 52 .
  • the motor member comprises a cylinder body 53 which is fixed on the telescoping head 21 so that the pin 51 can be engaged in the well 31 of one of the locking blocks 30 in its output position to exert pressure on the pusher 37 corresponding.
  • the device according to the invention can also advantageously involve a reading cell 60 ( FIGS 2 and 8) carried by the telescoping head 21 and able to appreciate the presence of position sensors 61 fitted on the internal walls of the elements. 9, 10 and 11, as illustrated in FIG. 2.
  • the position of the sensors 61 is determined to correspond to the position of the immobilizing parts 40 1 as well as to a position p of maximum retraction and of disablement of the actuator 19.
  • the cell 60 is, moreover, also intended determining the presence of position sensors 62 which are provided to correspond to the immobilizing parts 40 2 . It could obviously be provided intermediate position sensors in relation to the parts 40 3 or with certain positions that can be defined from the part 40 4 .
  • each mobile telescopic element namely 10, 11, 12 cooperates with the corresponding immobilization piece 40 1 carried by the immediately external element, namely 9 for the element 10 respectively. 10 for the element 11 and 11 for the element 12, in a relational situation illustrated in FIG. 5 .
  • the springs 36 of each block 30 press the jaws 35 on either side of the corresponding immobilizing piece 40 which is trapped firmly.
  • each element is immobilized axially with respect to the immediately external element surrounding it and can not be subjected to any sliding backwards, even if the arrow is inclined in elevation, because of the shape of the teeth 41 of the double rack 40 .
  • the telescopic elements are all relatively immobilized in the retracted position and remain immobilized in such a passive safety state since the clamping members 34 are of the tight rest position type.
  • the actuator 19 occupies for example the off position shown in phantom and corresponding to the position sensor p in a state of maximum retraction.
  • the actuator 19 is controlled so as to move the telescoping head 21 to the level of the corresponding locking block 30 which is detected by the reading of the position sensor 61 carried by the telescopic element 12.
  • the jack 52 When the telescoping head 21 places the pin 51 in line with the locking block 30, the jack 52 is energized so as to cause the extension stroke of the pin 51 which is thus caused to penetrate into the well 31. action results in temporarily coupling the head 21 with the block 30 and, consequently, to link the actuator 19 with the extreme telescopic element 12.
  • the supply of the jack 52 is ensured so that the extension of the spindle 51 occurs over a length such that the latter presses on the actuating face 37 2 of the pusher 37 which controls, against the counteracting action of the springs 36, separating the jaws 35 releasing the immobilizing piece 40 .
  • the pin 51 temporarily secures the actuator 19 and the movable member to move, and in a second step, releases the latter relative to the immediately outside element with respect to which it was immobilized.
  • the actuator 19 is then controlled to be moved, for example, in the direction of the arrow f 1 (FIG 2) according to the sequence taken into account, so that its extension causes the displacement in the same direction of the element. mobile 12 which is telescoped in the output position.
  • the supply or control of the actuator 19 occurs until the cell 60 detects the position of the sensor 62 carried by the element 11.
  • the cylinder 52 is energized to cause the retraction of the pin 51 .
  • the actuator 52 may be of the single direction, as illustrated in the drawing or of the double effect. It can of course be implemented any type of engine capable of performing the same function.
  • the retraction of the spindle 51 causes, at first, a shrinkage sufficient to release the stress applied to the pusher 37 which can thus be erased to make predominant the actions of the springs 36 causing the closure and clamping of the jaws 35 on the workpiece 40 2 immobilization presented facing the element 11 in this case ( Figure 10 ).
  • the retraction stroke of the spindle 51 produces, in a second time and after complete retraction, uncoupling relative to the locking block 30, so that the temporary connection between the telescoping head 21 and said block is broken.
  • the telescoped element output in this case the element 12, is again immobilized relative to the element surrounding it, in this case 11, while the actuator 19 is uncoupled and it can be controlled in reverse order to regain the position p.
  • the proposal according to the invention clearly makes it possible to simplify the locking, loading and actuating means by making a dual function assume each of them and in particular to the pin 51, while respecting in all the sequences that to unfold, a positive security automatically intervening
  • the block 30 is mounted floating in or on the telescopic element which carries it.
  • a floating assembly can for example be established as shown in FIGS. 3 and 5 by providing the block with grooves 63 intended to cooperate with a housing 64 formed in the corresponding telescopic element so as to leave a clearance J transverse to the longitudinal axis y-y '.
  • Such a floating assembly has the advantage of allowing a cooperative adaptation between the members 30 and 40 and 30 and 50 despite the possible lateral deflections of the telescopic elements.
  • the head 37 3 include a finger 37 4 or the like which is adapted to cooperate, in the unlocked position of the jaws 38 with a complementary groove 65 hollowed out longitudinally in the upper face. from room 40 ( Fig. 11 ).
  • Figs. 4, 6, 7, 12 and 13 show that according to another advantageous arrangement, it may be provided to provide each block 30 with means immobilizing the jaws against any opening movement other than that controlled by the pushers 37.
  • it is provided to surround the two jaws 35 by two half-rings 66, disposed in the block 30 with the interposition of springs 67 urging them to engage the jaws by shoulders 68 they form vis-à-vis.
  • Each half-band comprises at least one spur 69 having an inclined ramp 70 placed in vertical cooperation relation with at least one complementary projection 71 that has the head 37 3 .
  • the projection 71 acts on the ramp 70 which pushes the half-band to release the subsequent displacement in opening of the jaws 35 under the action of the head 37 3 .
  • Fig. 14 shows an alternative embodiment in which the actuator 19 is constituted by a worm 80 which is connected by means of a geared motor unit 81 to the fixed part 20 which can then advantageously constitute a bearing for the one end of the screw, the other of which is mounted in a housing 82 carried by the foot 24 .
  • the telescoping head 21 then constitutes a threaded body 83 cooperating with the worm 80 and which is immobilized in rotation for example between guides 84 linking the fixed bearing 20 to the housing 82.
  • Fig. 15 shows another variant embodiment in which the actuator 19 is constituted by an endless chain 90 carried by sprockets 91 and 92 , one of which is said to be a reference and the other of which is said to be driven because of its connection with a motor member 93 such as a hydraulic or electric geared motor.
  • a motor member 93 such as a hydraulic or electric geared motor.
  • the pinions 91 and 92 are preferably carried by a beam-frame 94 meeting the above requirements of securing with the fixed point 20 and guiding relative displacement with respect to the element 12 by means of the foot 24, or from the rollers 25.
  • the telescoping head 21 can then be advantageously constituted only by the body 53 of the motor unit actuating the pin 51.
  • each member 51 in the form of a telescopic ram with two rods, one assuming the coupling function and the other the control function of the pushers 37.
  • An example of embodiment is shown in FIG. 16 that the body 53 defines a cylinder 95 containing a piston 96 extended by a rod 97 to enter the well 31 to assume the function of coupling with the block 30.
  • the rod 97 defines a cylinder 98 containing a secondary piston 99 extended by a rod 100 charged to act on the face 37 2 of the pusher 37.
  • FIG. 16 shows in thick dashed lines that the cylinders 95 and 98 can be double-acting cylinders.

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

Claims (21)

  1. Verfahren zum Teleskopieren eines Kranauslegers oder dergleichen, der gebildet ist aus mehreren Teleskopelementen (9 - 12), die in gegenseitiger Halteverbindung durch Zentrierkeile angeordnet sind, darin bestehend, ein Stellglied (19) mit wechselnder geradliniger Bewegung einzusetzen, das in dem Ausleger angeordnet ist, indem es mit dem Basiselement (9) des Auslegers verbunden ist, zwischen den Elementen Organe zur Verriegelung in eingefahrener Position und Verriegelungsmittel in Ausfahrposition der Elemente vorzusehen und Betätigungsorgane der Organe und Mittel zum Verriegeln einzusetzen, um entweder die Verriegelung oder die Entriegelung der Elemente durchzuführen, die in einer Teleskopposition durch das Stellglied gehalten werden, wobei das Verfahren darin besteht:
    auf jedem Element außer dem Grundelement einen Verriegelungsblock (30) einzusetzen, der ein Sperrmittel (34) mit festgesetzter Ruheposition umfaßt,
       das Sperrmittel jedes Blocks mit wenigstens einem Feststellteil (40) in fester Position zusammenwirken zu lassen, das zu dem äußeren Element gehört, das konzentrisch zu jenem ist, das den Block trägt,
    dadurch gekennzeichnet, das es darin besteht:
    auf dem Stellglied ein einziges Organ (51) zum Übernehmen oder zur temporären Ankopplung und zum positiven Entsperren ruhen zu lassen, das imstande ist, selektiv auf jeden der Verriegelungsblöcke einzuwirken,
    durch positive Einwirkung, um einerseits das Stellglied mit dem Block zu verbinden und andererseits die Wirkung des Sperrmittels auf das Feststellteil zu neutralisieren,
    durch Rückstelleinzug, um einerseits den Block relativ zum Einspannstück festzustellen und andererseits das Stellglied im Verhältnis zum Block freizugeben.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß es darin besteht, jedes Element außer dem äußeren Element mit wenigstens zwei Feststellteilen (401) und (402) zu versehen, welche angeordnet werden, um wenigstens zwei Referenzpositionen für das direkt innere Element zu definieren, nämlich die eingefahrene Position und eine Ausfahrposition des inneren Elements.
  3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß es darin besteht, jedes Element außer dem äußeren Element mit einem Feststellteil (404) zu versehen, das sich über die gesamte nutzbare Länge jedes Elements erstreckt, um für das direkt innere Teleskopelement n Zwischenpositionen zwischen den Einfahr- und Ausfahrpositionen zu definieren.
  4. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß man, um ein Auslegerelement zu teleskopieren:
    das Stellglied steuert, um das Organ zum Übernehmen und zum positiven Entsperren in die Flucht des Verriegelungsblocks des Elements zu bringen,
    das Stellglied in der Position in der Flucht feststellt,
    das Organ zum Übernehmen und zum positiven Entsperren steuert, um:
    erstens temporär dieses Organ mit dem Block zu koppeln,
    zweitens das Entsperren des Blockes durchzuführen und das Feststellteil freizugeben, auf dem es gesperrt war,
    das Stellglied bei geradlinigem Lauf derart steuert, daß mit ihm das zu teleskopierende Element relativ zu dem es außen umgebenden Auslegerelement angetrieben wird,
    die neue gewünschte Position zu bestimmt,
    die Steuerung des Stellglieds unterbricht,
    umgekehrt das Organ zum Übernehmen und zum positiven Entsperren steuert, um:
    erstens den Block, der in seine gesperrte Ruheposition zurückgeführt ist, in welcher er das Feststellteil einfängt, entsprechend der neuen Position derart freizugeben, daß das Element relativ zu jenem, das es umgibt, festgestellt wird,
    zweitens das Organ zum Übernehmen und den Block zu entkoppeln, um das Stellglied freizugeben,
    schließlich das Stellglied steuert, um es in eine maximale Rückzugsposition zurückzuführen.
  5. Teleskopausleger umfassend:
    wenigstens drei unterschiedliche teleskopische und konzentrische Elemente, darunter ein Basiselement (9), wenigstens ein Zwischenelement (10) und ein äußeres Element (12),
    ein Stellglied (19) mit wechselnder geradliniger Bewegung in dem Ausleger und verbunden mit dem Basiselement (9),
    Verriegelungsorgane zwischen den Elementen, um diese letzteren relativ in Einfahr- und Ausfahrpositionen festzustellen, und Betätigungsmittel, die durch das Stellglied getragen sind, um die Organe zu steuern, derart, daß:
    die Verriegelungsorgane bestehen aus:
    einem Verriegelungsblock (30), der durch jedes Element außer jenem Grundelement getragen wird und ein Sperrmittel (34) mit festgesetzter Ruheposition einschließt,
    wenigstens einem Feststellteil (40) in fester Position, das zu dem äußeren Element gehört, das konzentrisch zu jenem ist, das den Block trägt, und dazu vorgesehen ist, mit dem Sperrmittel des Blockes zusammenzuwirken,
    dadurch gekennzeichnet, daß
    die Betätigungsmittel des Stellgliedes ein einziges Organ (51) umfassen, ausgelegt, um
    selektiv irgendeinem der Blöcke zu übernehmen, um temporär das Stellglied an das Element anzukoppeln, das den Block trägt,
    durch positive Einwirkung das Sperrmittel des Blockes zu neutralisieren, um es bezüglich des Feststellteiles freizugeben.
  6. Ausleger nach Anspruch 5, dadurch gekennzeichnet, daß die Verriegelungsorgane dem Innenende der Auslegerelemente angepaßt sind und Sperrmittel (34) besitzen, deren Betätigungsmittel (37) gemäß einer Richtung geführt werden, die senkrecht zu jener der Bewegung des Stellglieds ist.
  7. Ausleger nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß jedes Verriegelungsorgan einen Block (30) umfaßt, der fest ist an dem Innenende des Elements, zu dem er gehört und welcher begrenzt:
    ein Bohrloch (31) zum Erfassen des Organs zum Übernehmen (51),
    ein Behältnis (33), das mit dem Bohrloch kommuniziert und zwei Klemmbacken (35) enthält, die mit einem Stößel (37) verbunden sind, welcher den Bohrlöchern begegnet und ein gleichzeitiges Betätigungsmittel der Klemmbacken bildet, die immer auf den elastischen Organen (36) beim Sperren an einem Feststellteil (40) befestigt werden, das sie einfassen und welches durch das Auslegerelement getragen ist, in dem das Element sitzt.
  8. Ausleger nach Anspruch 7, dadurch gekennzeichnet, daß die Klemmbacken Sperrseiten umfassen, die ausgebildet sind, um mit den anliegenden Flanken zusammenzuwirken, die durch jedes Feststellteil präsentiert werden.
  9. Ausleger nach Anspruch 7, dadurch gekennzeichnet, daß der Block gegenüber den Bohrlöchern ein Einschnitt (45) für den Durchgang des Feststellteils umfaßt.
  10. Ausleger nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die Verriegelungsorgane auf jedem Teleskopelement außer dem äußeren Element wenigstens zwei Feststellteile (401) und (402) eingreifen lassen, die parallel zur Teleskopierrichtung ausgerichtet sind und für das unmittelbar innere Element zwei vorbestimmte Einfahr- und Ausfahrpositionen definieren.
  11. Ausleger nach einem der Ansprüche 5 bis 9, dadurch gekennzeichnet, daß die Verriegelungsorgane auf jedem Teleskopelement außer dem äußeren Element ein Feststellteil eingreifen lassen, das aus einem Profil (404) besteht, welches über die gesamte Länge des Elements verläuft, um für das unmittelbar äußere Element außer den beiden Einfahr- und Ausfahrpositionen n Zwischenfeststellpositionen zu definieren.
  12. Ausleger nach Anspruch 5, 7, 8, 10 oder 11, dadurch gekennzeichnet, daß das Feststellteil (40) die Form einer Doppelzahnstange aufweist, von der jeder Zahn (41) durch eine Seite (42) orthogonal zur Längsachse des Teils und zum Kopf des Auslegers hin ausgerichtet, und eine schräge Seite (43) definiert ist.
  13. Ausleger nach Anspruch 5 oder 6, dadurch gekennzeichnet, daß die Stößel (37) der Verriegelungsorgane Endstücke (371) aufweisen, deren Betätigungsseiten (372) auf einer gleichen Ebene L, die parallel zur Längsachse y-y' ist, angeordnet sind.
  14. Ausleger nach Anspruch 5, dadurch gekennzeichnet, daß die Steuermittel des Stellglieds wenigstens einen Stift (51) umfassen, der in wechselnde geradlinige Bewegung durch ein Motororgan (52) gesetzt wird, um eine erste eingesunkene Position im Verhältnis zum Einspannblock zu besetzen und eine zweite Position, in welcher er nach Anhalten in Koinzidenz mit einem der Blöcke hervorspringt, um in das Bohrloch einzugreifen, um temporär das Stellglied mit dem Element zu koppeln und um auf den Stößel (37) einzuwirken und die Öffnung des Sperrmittels (34) des Blocks zu steuern.
  15. Ausleger nach Anspruch 14, dadurch gekennzeichnet, daß der Stift (51) aus einer Kolbenstange eines Zylinders (53) besteht, der ein Motororgan bildet.
  16. Ausleger nach Anspruch 14 oder 15, dadurch gekennzeichnet, daß der Stift oder sein Motororgan auf einem Teleskopkopf (21) getragen sind, der zu dem Stellglied (19) gehört.
  17. Ausleger nach Anspruch 5, dadurch gekennzeichnet, daß das Stellglied aus einem Hydraulikzylinder besteht, dessen Stange (22) fest mit dem Basiselement (9) verbunden ist und dessen Körper (23), versehen mit dem Teleskopkopf (21), mit der Möglichkeit einer Bewegung geführt relativ zum äußeren Element (12) getragen ist.
  18. Ausleger nach Anspruch 5, dadurch gekennzeichnet, daß das Stellglied (19) aus einer Schnecke (80) besteht, die mit einem Motororgan (81) verbunden ist, angepaßt auf dem Grundelement (9) und getragen mit der Möglichkeit einer Bewegung, die geführt ist relativ durch das äußere Element (12), wobei die Schnecke mit einem Gewindekörper (83) zusammenwirkt, der rotationsfixiert ist und den Teleskopkopf (21) bildet.
  19. Ausleger nach Anspruch 5, dadurch gekennzeichnet, daß das Stellglied (19) durch eine Endloskette (90) gebildet wird, die durch ein Vorlegezahnrad (91) und durch ein Antriebszahnrad (92) mitgenommen wird, welche auf einem Trägerblock (94) angebracht sind, der mit dem Basiselement (9) verbunden ist und mit der Möglichkeit einer relativ geführten Bewegung durch das äußere Element gelagert ist, wobei die Endloskette Träger des Kopfes der Teleskopstange (21) ist.
  20. Ausleger nach Anspruch 5 oder 7, dadurch gekennzeichnet, daß der Block (30) quer schwebend angebracht ist und einen Stößel (37) besitzt, der mit einem Kopf (373) versehen ist, der durch einen Arretierstift (374) verlängert ist, welcher geeignet ist, mit einer Auskehlung (65) zusammenzuwirken, die durch die Feststellteile (40) präsentiert wird.
  21. Ausleger nach Anspruch 5, 7 oder 20, dadurch gekennzeichnet, daß der Block (30) innen zwei Halbzwingen (66) umfaßt, die durch Federn (67) in Eingriff um die Sperrklemmbacken geschoben werden und jede wenigstens eine Trennrampe (70) tragen, welche fest mit einem Vorsprung (71) des Kopfs des Stößels verbunden ist.
EP00420221A 1999-09-01 2000-10-26 Telekopiersystem eines Kranauslegers Expired - Lifetime EP1201594B1 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR9911102A FR2797862B1 (fr) 1999-09-01 1999-09-01 Procede de telescopage d'une fleche de grue, dispositif pour sa mise en oeuvre et fleche de grue en faisant application
EP00420221A EP1201594B1 (de) 1999-09-01 2000-10-26 Telekopiersystem eines Kranauslegers
DE60023506T DE60023506T2 (de) 2000-10-26 2000-10-26 Telekopiersystem eines Kranauslegers
US09/709,736 US6474486B1 (en) 1999-09-01 2000-11-13 Method of telescoping a crane jib, apparatus for implementing the method, and a crane jib constituting an application thereof

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9911102A FR2797862B1 (fr) 1999-09-01 1999-09-01 Procede de telescopage d'une fleche de grue, dispositif pour sa mise en oeuvre et fleche de grue en faisant application
EP00420221A EP1201594B1 (de) 1999-09-01 2000-10-26 Telekopiersystem eines Kranauslegers
US09/709,736 US6474486B1 (en) 1999-09-01 2000-11-13 Method of telescoping a crane jib, apparatus for implementing the method, and a crane jib constituting an application thereof

Publications (2)

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EP1201594A1 EP1201594A1 (de) 2002-05-02
EP1201594B1 true EP1201594B1 (de) 2005-10-26

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DE202004008083U1 (de) * 2004-05-19 2005-11-10 Liebherr-Werk Ehingen Gmbh Mobilkran
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US8322687B2 (en) * 2008-04-22 2012-12-04 Lift Systems, Inc. Integrated wedge lock arrangement
DE102009009944B4 (de) * 2009-02-20 2011-02-24 Terex-Demag Gmbh Sicherungs- und Verbolzungseinheit
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CN102153023B (zh) * 2011-04-07 2013-09-25 大连理工大学 起重机用插销互锁装置、单缸插销式伸缩臂及起重机
CN102735172B (zh) * 2012-06-25 2015-04-01 三一重工股份有限公司 臂长测量装置及测量方法、伸缩臂架
WO2014047449A1 (en) 2012-09-21 2014-03-27 Par Systems, Inc. Boat deployment assembly and method
US10494233B2 (en) 2013-02-06 2019-12-03 Par Systems, Llc Relocatable fine motion positioner assembly on an overhead crane
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JP6223071B2 (ja) * 2013-08-30 2017-11-01 株式会社タダノ クレーン装置のブーム伸縮機構
CN104528541B (zh) * 2014-12-15 2017-03-15 徐州重型机械有限公司 一种单缸插销式起重机油缸防过伸装置
CN105417409B (zh) * 2015-12-29 2017-11-14 中联重科股份有限公司 单缸插销式伸缩臂的检测方法、装置、系统及工程机械
JP6668832B2 (ja) * 2016-03-07 2020-03-18 株式会社タダノ ブーム伸縮装置
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JP7034685B2 (ja) * 2017-11-30 2022-03-14 株式会社加藤製作所 クレーンのブーム伸縮装置の制御装置
CN108750976A (zh) * 2018-07-02 2018-11-06 合肥市春华起重机械有限公司 一种新型伸缩式旋臂起重机
CN109879183B (zh) * 2019-03-13 2020-05-15 中联重科股份有限公司 吊臂的节臂尾部滑块的定位方法、定位装置及定位套件
CN113677615B (zh) * 2019-04-04 2024-04-09 株式会社多田野 作业机
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CN111908356B (zh) * 2020-07-30 2022-06-14 杭州瑞林机械有限公司 一种可伸缩式的施工塔吊臂
CN112777498B (zh) * 2021-03-23 2022-07-05 三一汽车起重机械有限公司 一种伸缩臂结构及起重机
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EP1201594A1 (de) 2002-05-02
US6474486B1 (en) 2002-11-05
FR2797862B1 (fr) 2001-11-16

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